JP2016159465A - Superposition composite component - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a superposition composite component which gives a cushioning property by superposing a first member and a second member, and by elastically deforming a large number of projections formed on the second member, and which while realizing a uniform touch feeling to the superposition composite component at the time of pressing a skin, can suppress occurrence of noise.SOLUTION: An armrest component 1 is configured to have a substrate 10 superposed with a skin material 20, and when a plate-shaped part 21 is pressed, the armrest component 1 is given a cushioning property by elastically deforming a large number of micro projections 30. Each micro projection 30 includes a first leg part 31, a second leg part 32, and a node part 35. The second leg part 32 is connected to a tip of the first leg part 31 extending to form a vertical angle θ to a plate-shaped part 21, via the node part 35. The second leg part 32 forms a first vertical angle α to the first leg part 31 regarding a Z direction, and extends in a direction of forming a first horizontal angle A to the first leg part 31 regarding an X direction and a Y direction horizontal to a facing surface 22.SELECTED DRAWING: Figure 6

Description

  The present invention relates to an overlapped composite component in which a second member made of an elastically deformable resin material is superimposed on a first member, and cushioning is imparted by elastic deformation of a number of protrusions formed on the second member. .

  Conventionally, superposed composite parts are used as interior parts for vehicles such as automobile door trims and rear corner trims, and are configured by superposing a second member made of an elastically deformable resin material on the first member. Has been. The superimposed composite component imparts cushioning properties by elastically deforming a number of protrusions formed on the second member when the second member is pressed against the first member.

  As inventions related to such superposed composite parts, the inventions described in Patent Document 1 and Patent Document 2 are known. More specifically, the armrest for a vehicle described in Patent Document 1 is configured by overlapping an armrest core (corresponding to a first member) and an armrest skin (corresponding to a second member) including a plurality of spacer ribs. When the armrest skin is pressed against the armrest core, the plurality of spacer ribs are elastically deformed to give cushioning properties.

  On the other hand, the vehicle interior part described in Patent Document 2 is fixed to a door trim and used as an armrest as an interior panel, and includes a base part (corresponding to a first member) and a skin part (second part) provided with a plurality of protrusions. Is equivalent to the member). The vehicular content component imparts cushioning properties by elastically deforming a plurality of protrusions when the skin portion is pressed against the base material portion.

JP 2000-085434 A JP 2010-253967 A

  However, in the vehicle armrest described in Patent Document 1, since the fitting recess is formed on the surface of the armrest core and the tip portions of the plurality of spacer ribs are held, the armrest skin is pressed against the armrest core. In this case, the linearly extending spacer rib is elastically deformed so as to be bent at the intermediate position.

  As in the invention described in Patent Document 1, when a linearly extending protrusion is elastically deformed so as to be bent at an intermediate position thereof, it is assumed that both side portions overlap with the bent portion. In this case, among the plurality of protrusions, there may be a portion where the protrusions overlap and a portion where the overlap does not occur, and therefore, a uniform tactile sensation with respect to the armrest skin cannot be realized due to unevenness due to the presence or absence of overlap. There was a case.

  Moreover, in the vehicle interior part described in Patent Document 2, the plurality of protrusions formed on the skin portion are constituted by the first skin rib and the second skin rib. The 1st skin rib in patent documents 2 is inclined and projected toward the base material from the skin, and the 2nd skin rib is inclined in the direction which crosses the 1st skin rib from the skin toward the base material. And it is protruding. In the vehicle interior part described in Patent Document 2, when the skin is pressed against the base material, the first skin rib and the second skin rib are deformed so as to approach each other and come into contact with each other.

  Therefore, when comprised like patent document 2, when a skin is pressed with respect to a base material, there exists a possibility that a 1st skin rib and a 2nd skin rib may overlap. In this case, since there may be a portion where the first skin rib and the second skin rib overlap and a portion where the overlap does not occur, a uniform tactile sensation with respect to the skin cannot be realized due to the unevenness caused by the presence or absence of the overlap. There was a case.

  Further, in Patent Document 2, in the process in which the skin is pressed against the base material and elastic deformation of the first skin rib and the second skin rib occurs, the tips of the first skin rib and the second skin rib are the base material. There is a case of moving so as to rub against the surface. At this time, abnormal noise may be generated due to rubbing between the first and second skin ribs and the substrate surface, which may impair the quality of the product.

  The present invention relates to an overlapped composite part in which a second member is overlapped with a first member, and cushioning is imparted by elastic deformation of a large number of protrusions formed on the second member. An overlapping composite component capable of suppressing the generation of abnormal noise while realizing the above is provided.

  An overlapped composite part according to one aspect of the present invention is formed by projecting a first member having a predetermined mating surface, a plate-like portion extending along the mating surface, and projecting from the plate-like portion toward the mating surface. A plurality of protrusions that form a space between the plate-like portion and the mating surface, and the elastic members are arranged so as to be superimposed on the first member in a state where the protrusions are in contact with the mating surface A second composite member made of a deformable resin material, wherein the protrusion is pressed against the mating surface and elastically deformed to provide cushioning properties, and each of the second members The protrusion has a first leg extending so as to form a predetermined vertical angle with respect to the plate-like part with respect to a direction perpendicular to the surface of the plate-like part, and a predetermined with respect to the first leg with respect to the vertical direction. Make the first vertical angle and front A node that connects the first leg and the second leg with a second leg extending in a direction that forms a predetermined first horizontal angle with respect to the first leg with respect to a direction horizontal to the plate-like part. And a portion.

  The superimposed composite component includes a first member having a predetermined mating surface and a second member made of an elastically deformable resin material, and the protrusion of the second member is in contact with the mating surface. The first member and the second member are overlapped. When the plate-like portion of the second member is pressed toward the first member, the superposed composite member imparts cushioning properties as a superposed composite component by elastically deforming a number of protrusions formed on the second member. To do. Here, in the superimposed composite component, each protrusion of the second member has a first leg, a second leg, and a node, and the second leg is in relation to the plate-like part. Thus, the first leg extending to form a predetermined vertical angle forms a first vertical angle in the vertical direction and extends to form a first horizontal angle in the horizontal direction. By arranging the first leg portion and the second leg portion in each projection in this manner, when the plate-like portion of the second member is pressed against the first member, the elastic deformation of each projection is the first leg. It becomes the aspect which suppressed the overlap of a part and a 2nd leg part to the minimum. Thereby, according to the said superposition | stacking composite member, when pressing the plate-shaped part of a 2nd member, generation | occurrence | production of the unevenness | corrugation resulting from the overlap of each protrusion can be suppressed, and it implement | achieves a uniform tactile sense. Can do.

  According to another aspect of the present invention, there is provided an overlaid composite part according to claim 1, wherein each of the protrusions has the first leg portion and the second leg portion with respect to the vertical direction. The first vertical angle constituted by is formed larger than the vertical angle constituted by the plate-like portion and the first leg portion.

  In the superposed composite part, each projection has the first vertical angle formed by the first leg and the second leg in the vertical direction, and the vertical formed by the plate-like part and the first leg. It is formed larger than the angle. With this configuration, when the plate-like portion of the second member is pressed, the position of the node portion is moved without moving the contact point between each protrusion and the mating surface when elastically deforming each protrusion. be able to. That is, according to the superimposed composite component, uniform tactile sensation can be realized by suppressing the overlapping of the protrusions, and at the same time, the generation of noise due to the movement of the protrusions accompanying the elastic deformation can be suppressed.

  An overlap composite part according to another aspect of the present invention is the overlap composite part according to claim 1 or claim 2, wherein each of the protrusions is relative to the second leg portion with respect to the vertical direction. Forming a predetermined second vertical angle, and with respect to the horizontal direction, a third leg extending in a direction forming a predetermined second horizontal angle with respect to the second leg, the second leg, and the third It has a node part which connects a leg part, It is characterized by the above-mentioned.

  According to the superimposed composite part, each protrusion further includes a third leg portion and a node portion, so that a cushion feeling when pressing the plate-like portion of the second member is desired. It can adjust to the aspect of. Further, the third leg portion of the protrusion is connected to the second leg portion via the node portion, and forms a predetermined second vertical angle with respect to the second leg portion with respect to the vertical direction. At the same time, with respect to the horizontal direction, the second leg portion extends in a direction that forms a predetermined second horizontal angle. Therefore, according to the superimposed composite component, even if each protrusion is constituted by the first leg, the second leg, the third leg, and the two nodes, the second member When the plate-like portion is pressed against the first member, the elastic deformation of each protrusion can be made an aspect in which the overlapping of the leg portions is minimized. Thereby, according to the said superposition | stacking composite member, when pressing the plate-shaped part of a 2nd member, generation | occurrence | production of the unevenness | corrugation resulting from the overlap of each protrusion can be suppressed, and it implement | achieves a uniform tactile sense. Can do.

  An overlapping composite part according to another aspect of the present invention is the overlapping composite part according to any one of claims 1 to 3, wherein a tip of each projection is aligned with the first member. It is characterized by surface contact with the surface.

  According to the overlapped composite part, the tip of each projection is in surface contact with the mating surface of the first member. Therefore, when the plate-like portion is pressed against the first member, the tip of each projection is Thus, the frictional force acting on the mating surfaces can be increased, and slippage (stick slip) of each protrusion on the mating surface can be suppressed. Thereby, the said composite composite component can suppress suitably generation | occurrence | production of the noise accompanying the slip of each protrusion in the mating surface of a 1st member.

  An overlap composite component according to another aspect of the present invention is the overlap composite component according to any one of claims 1 to 4, wherein the first leg portion of each protrusion has an arrangement pattern. The horizontal angles of two first leg portions adjacent to each other are determined so as to be separated from each other.

  According to the superposed composite part, the horizontal angle of the two first leg portions adjacent in the arrangement pattern is determined so as to be separated from each other. When pressed, the overlap of the legs constituting the two adjacent protrusions in the arrangement pattern can be minimized. Thereby, according to the said superimposition composite member, generation | occurrence | production of the unevenness | corrugation resulting from the overlap of two adjacent protrusions in an arrangement pattern can be suppressed, and, thereby, a uniform tactile sensation is realized as the entire superposition composite component. be able to.

  When the first member having a predetermined mating surface and the second member made of an elastically deformable resin material are overlapped and the plate-like portion of the second member is pressed against the mating surface, A cushion feeling is imparted by elastically deforming each protrusion formed on the two members. Each projection has a first leg portion, a second leg portion, and a node portion, and the second leg portion extends in a predetermined vertical angle with respect to the plate-like portion. The one leg portion extends so as to form a first vertical angle in the vertical direction and a first horizontal angle in the horizontal direction. When the plate-like portion is pressed against the first member, the elastic deformation of each protrusion is a mode in which the overlap between the first leg portion and the second leg portion is minimized. Suppresses the occurrence of unevenness and achieves a uniform tactile sensation.

It is explanatory drawing which shows an example of the vehicle door trim to which this invention is applied. It is sectional drawing of the armrest component arrange | positioned at the door trim for vehicles. It is an expanded sectional view of the armrest part in the door trim for vehicles. It is side surface sectional drawing which shows the structure of the microprotrusion which concerns on 1st Embodiment. It is a top view which shows the structure of the microprotrusion which concerns on 1st Embodiment. It is explanatory drawing which shows the deformation | transformation aspect of the microprotrusion which concerns on 1st Embodiment. It is side surface sectional drawing which shows the structure of the microprotrusion which concerns on 2nd Embodiment. It is a top view which shows the structure of the microprotrusion which concerns on 2nd Embodiment. It is explanatory drawing which shows the deformation | transformation aspect of the microprotrusion which concerns on 2nd Embodiment.

(First embodiment)
Hereinafter, an embodiment (first embodiment) in which a composite composite component according to the present invention is applied to an armrest component 1 constituting a vehicle door trim D will be described in detail with reference to the drawings.

(Schematic configuration of armrest parts arranged in a vehicle door trim)
First, a schematic configuration of the vehicle door trim D according to the first embodiment will be described in detail with reference to FIGS. FIG. 1 is a front view showing a schematic configuration of a vehicle door trim D, and FIG. 2 is a cross-sectional view showing a configuration of an armrest component 1 and showing a cross section taken along line ii in FIG. FIG. 3 is an enlarged cross-sectional view of the armrest component 1 and shows an enlarged view of a portion ii in FIG.

  As shown in FIG. 1, the vehicle door trim D according to the first embodiment is a vehicle interior part in a vehicle door, and the armrest part 1 corresponding to the overlapping composite part according to the present invention is used as the door trim body T. It is configured by fitting into the formed mounting opening I.

  The armrest component 1 is fitted into the mounting opening I from the back side (right side in FIG. 2) of the door trim main body T, and is integrated with the door trim main body T by a plurality of mounting portions 12 formed in the armrest component 1. Assembled.

  As shown in FIG. 2, the armrest component 1 is disposed so as to overlap with a base material 10 formed in a curved plate shape so that an occupant in the vehicle can place an elbow. The skin material 20 is constituted.

  The base material 10 is integrally formed of a hard synthetic resin material such as polypropylene, and includes a mating surface 11, a mounting portion 12, and an insertion hole 13. The said base material 10 is corresponded to the 1st member in this invention.

  The mating surface 11 is formed in a curved plate shape on the base material 10 so that an occupant in the vehicle can place an elbow, and corresponds to the mating surface of the first member in the present invention. And the attaching part 12 is integrally formed with respect to the base material 10 in the outer periphery of the mating surface 11, and is used when assembling the armrest component 1 to the door trim body T integrally. As shown in FIG. 3, the insertion hole 13 is formed in the mating surface 11, and holds the relative position of the skin material 20 with respect to the base material 10 by cooperating with an engagement protrusion 23 of the skin material 20 described later. To do.

  The skin material 20 is integrally formed with a relatively soft synthetic resin material such as soft polyvinyl chloride so as to be elastically deformable, and has a plate-like portion 21, engagement protrusions 23, and a large number of minute protrusions 30. ing. The skin material 20 corresponds to the second member in the present invention.

  The plate-like portion 21 is formed in a plate shape from a soft synthetic resin material, and is disposed so as to overlap the base material 10 so as to extend along the mating surface 11 as shown in FIGS. . It is desirable that the plate-like portion 21 has a thickness of 1 mm or more and 2 mm or less, and the plate-like portion 21 in the first embodiment has a plate thickness of about 1.5 mm. In the first embodiment, one surface of the plate-like portion 21 that faces the mating surface 11 of the base material 10 when the skin material 20 is placed on the base material 10 is referred to as a “facing surface 22”. .

  Then, one surface of the plate-like portion 21 located on the back side of the facing surface 22 constitutes a design surface in the armrest component 1. A pattern or the like may be formed on the design surface, and a woven fabric or a non-woven fabric may be laminated on the design surface.

  As shown in FIG. 2, the outer peripheral edge of the plate-like portion 21 is formed by the outer edge of the base material 10 when the armrest component 1 is fitted in the mounting opening I of the door trim main body T. The mounting opening I is pressed. That is, the outer peripheral edge of the plate-like portion 21 is sandwiched between the opening edge of the attachment opening I and the outer edge of the substrate 10, and the positional relationship of the plate-like portion 21 of the skin material 20 with respect to the mating surface 11 of the substrate 10 is determined. Can be held.

  In addition, when maintaining the positional relationship of the plate-like portion 21 of the skin material 20 with respect to the mating surface 11 of the base material 10, an outer peripheral edge portion of the plate-like portion 21 is used by using a fixing means such as an adhesive as necessary. Can be configured to be fixed to the outer edge of the substrate 10.

  As shown in FIG. 3, an engagement protrusion 23 and a large number of minute protrusions 30 are integrally formed on the plate-like portion 21 of the skin material 20. Projecting toward the mating surface 11.

  As described above, the mating surface 11 of the base material 10 is curved so that an occupant of the vehicle can place an elbow, so the mating surface 11 of the base material 10 and the plate-like portion 21 of the skin material 20 The size of the gap between them may change, and the skin material 20 may be loosened or wrinkled, or the skin material 20 may be lifted.

  Here, the engagement protrusion 23 is inserted into the insertion hole 13 formed in the mating surface 11 of the base material 10 when the skin material 20 is superimposed on the base material 10, and engages with the insertion hole 13. To do. Since the engagement protrusion 23 is formed integrally with the plate-like portion 21, the engagement protrusion 23 holds the relative position of the mating surface 11 in which the insertion hole 13 is formed and the plate-like portion 21 of the skin material 20. That is, the engagement protrusion 23 can prevent the skin material 20 from being loosened or lifted by cooperating with the insertion hole 13 of the mating surface 11.

  A large number of microprotrusions 30 are formed so as to project toward the mating surface 11 of the base material 10 on the facing surface 22 of the plate-like portion 21 in the skin material 20 (that is, the surface on the base material 10 side). Each microprotrusion 30 has a substantially elliptical cross section, and has a gently tapered shape in which the cross-sectional area decreases toward the tip side. Each microprotrusion 30 is formed integrally with the plate-like portion 21, and is scattered over the opposing surface 22. Each minute protrusion 30 corresponds to a protrusion in the present invention, and details thereof will be described later with reference to the drawings.

  Here, as shown in FIG. 2, the outer peripheral edge of the plate-like portion 21 is sandwiched between the opening edge of the mounting opening I in the door trim body T and the outer edge of the base material 10, and the skin material 20 with respect to the base material 10. When the position of is fixed, each microprotrusion 30 is in a state where the tip thereof is in close contact with the mating surface 11 of the substrate 10. Thereby, a space S is formed between the surface of the mating surface 11 of the base material 10 and the facing surface 22 of the plate-like portion 21 of the skin material 20.

  In the armrest component 1, when the design surface of the plate-like portion 21 in the skin material 20 is pressed with a finger or a hand, the microprojections 30 are formed on the opposing surface 22 of the plate-like portion 21 and the mating surface 11 of the base material 10. It is elastically deformed in the space S. The armrest component 1 can provide cushioning properties by the elastic deformation of the minute protrusions 30 and can provide a predetermined tactile sensation.

  In the first embodiment, it is desirable that the shape and arrangement of each microprojection 30 satisfy the following conditions. The bitch of each microprojection 30 (that is, the center distance between the two microprojections 30) is preferably in the range of 4 mm or more and 7 mm or less, and the pitch of each microprojection 30 in the first embodiment is about 5 mm. It is arranged to be. The height dimension of each microprotrusion 30 (that is, the dimension of the microprotrusion 30 in the direction perpendicular to the facing surface 22) is preferably in the range of 2 mm or more and 3.5 mm or less. The height dimension of the minute protrusion 30 in the form is formed to be 2.5 mm.

  The width dimension of each microprotrusion 30 (for example, the short diameter dimension at the root portion of the microprotrusion 30) is preferably in the range of 1 mm or more and 2 mm or less, and the width dimension of the microprotrusion 30 in the first embodiment is It is formed to be about 1.2 mm. The length dimension of each microprotrusion 30 (for example, the long dimension at the base of the microprotrusion 30) is desirably in the range of 1.5 mm or more and 2.5 mm or less, and the microprotrusion according to the first embodiment. The length of 30 is formed to be about 1.8 mm. In addition, each dimension and pitch in these microprotrusion 30 are an example to the last, and it considers the material of the skin material 20 etc., and is suitably set to the value which can implement | achieve the target tactile sense and cushioning property.

(Specific Configuration of Micro Projection According to First Embodiment)
Next, a specific configuration of each minute protrusion 30 formed on the armrest component 1 according to the first embodiment will be described in detail with reference to FIGS. 4 and 5.

  In the following description, an X direction and a Y direction that are horizontal to the facing surface 22 of the skin material 20 and are orthogonal to each other are defined, and a direction perpendicular to the facing surface 22 (that is, the X direction and The direction perpendicular to the Y direction) is defined as the Z direction. FIG. 4 is a cross-sectional view of a certain minute protrusion 30 constituting the armrest component 1 according to the first embodiment when viewed from the Y direction. FIG. 5 is a plan view of the microprojections 30 in the first embodiment when viewed from the Z direction, and the plate-like portion 21 of the skin material 20 is omitted.

  As described above, each microprojection 30 is a space between the facing surface 22 of the plate-like portion 21 and the mating surface 11 of the base material 10 when the plate-like portion 21 in the skin material 20 is pressed with a finger or hand. By elastically deforming within S, cushioning is imparted to the armrest component 1 and a predetermined tactile sensation is provided.

  The microprotrusions 30 according to the first embodiment are integrally formed so as to protrude from the plate-like portion 21 of the skin material 20 toward the mating surface 11 of the base material 10, and the first leg portion 31 and the second leg portion 2 are formed. It has the leg part 32 and the node part 35 (refer FIG. 4, FIG. 5).

  And each microprotrusion 30 is formed in accordance with the predetermined arrangement pattern U over substantially the whole facing surface 22 of the skin material 20, for example, a large number of polygons are ruled over almost the whole facing surface 22. When arranged regularly, one or a plurality of minute protrusions 30 are formed on each side of each polygon. As shown in FIG. 5, each microprotrusion 30 according to the first embodiment is arranged at the center of each side in the equilateral triangular arrangement pattern U corresponding to the polygon described above. Is formed so as to extend radially from the center of the arrangement pattern U to the outside.

  As shown in FIGS. 4 and 5, the first leg portion 31 constitutes the base end portion of each microprojection 30 that is formed to project from the facing surface 22 of the plate-like portion 21 toward the mating surface 11. Each first leg 31 protrudes from the opposing surface 22 of the plate-like portion 21 in an inclined manner, and forms a predetermined vertical angle θ with respect to the Z direction perpendicular to the opposing surface 22 of the plate-like portion 21. As shown in FIG. 4, the vertical angle θ of the first leg 31 is the plate-like part 21 (opposing surface 22) and the central axis of the first leg 31 (in FIGS. 4 and 5, An angle formed by a dashed line).

  As shown in FIG. 5, with respect to the X direction and the Y direction horizontal to the facing surface 22 of the plate-like portion 21, each first leg portion 31 is directed outward from the center of the arrangement pattern U having an equilateral triangle shape. It is formed in a direction extending radially. That is, in the first embodiment, the horizontal angle ω configured by the first leg portions 31 of the two minute protrusions 30 adjacent in the arrangement pattern U is determined to be separated from each other. The horizontal angle ω is also configured by the central axis (indicated by a one-dot chain line in FIG. 5) of the first leg portion 31 of each minute protrusion 30 adjacent in the arrangement pattern U in the X direction and the Y direction. An angle.

  And the node part 35 is a part which connects the front-end | tip of the 1st leg part 31, and the edge part of the 2nd leg part 32, and as shown to FIG. 4, FIG. The apex portion of the corner constituted by the leg portion 32 is configured. In the first embodiment, each node 35 is approximately half of the dimension between the facing surface 22 and the mating surface 11 in the Z direction when the pressing load F is not applied to the plate-like portion 21. It is formed to be a position.

  The second leg portion 32 is connected to the distal end portion of the first leg portion 31 via the node portion 35, and has a predetermined angle (a first vertical angle α, which will be described later, a first horizontal direction) with respect to the first leg portion 31. It extends from the node 35 toward the mating surface 11 so as to make an angle A). And the 2nd leg part 32 which concerns on 1st Embodiment comprises the front-end | tip part of each microprotrusion 30, and when the skin material 20 is attached with respect to the base material 10, it is surface contact with the mating surface 11 Is configured to do.

  As shown in FIG. 4, the second leg portion 32 makes a predetermined first vertical angle α with respect to the first leg portion 31 with respect to the Z direction perpendicular to the facing surface 22 of the plate-like portion 21. Are connected via a node 35. The first vertical angle α refers to an angle formed by the central axis of the first leg 31 and the central axis of the second leg 32 (indicated by a two-dot chain line in FIGS. 4 and 5) with respect to the Z direction. The angle is larger than the vertical angle θ described above.

  As shown in FIG. 5, the second leg portion 32 has a predetermined first horizontal angle with respect to the first leg portion 31 with respect to the X and Y directions that are horizontal with respect to the facing surface 22 of the plate-like portion 21. It is connected via the node 35 so as to make A. The first horizontal angle A is an angle formed by the central axis of the first leg portion 31 and the central axis of the second leg portion 32 with respect to the X direction and the Y direction.

  That is, each microprotrusion 30 according to the first embodiment draws a spiral from the facing surface 22 of the skin material 20 toward the mating surface 11 of the base material 10 as shown in FIGS. Protrusively formed.

(Elastic deformation of microprotrusions according to the first embodiment)
In the armrest component 1 according to the first embodiment, when the plate-like portion 21 of the skin material 20 is pressed by a finger or a hand and a pressing load F acts, a large number of microprojections 30 configured as described above are spaces. Elastic deformation is caused in S, and cushioning is imparted to the armrest part 1. Here, the operation at the time of elastic deformation of the minute protrusion 30 having the above-described configuration will be described in detail with reference to FIG.

  As shown in FIG. 6, when the plate-like portion 21 of the skin material 20 is pressed with a hand or a finger, a pressing load F acts on the plate-like portion 21. Since the plate-like portion 21 is displaced toward the mating surface 11 side of the base material 10 by the pressing load F, the space S is reduced in the Z direction. Thereby, the microprotrusions 30 are compressed and deformed in the space S by the action of the pressing load F.

  In the elastic deformation of the microprotrusions 30 in the first embodiment, the nodes 35 in the microprotrusions 30 move in a direction horizontal to the mating surface 11 and the facing surface 22 (for example, the first leg portion) in accordance with the action of the pressing load F. 31 and the second leg portion 32 toward the top of the corner). At this time, the tip end of the second leg portion 32 is in surface contact with the mating surface 11, and a friction force of a predetermined level or more is applied to the tip end of the second leg portion 32 (that is, the tip end of the minute protrusion 30). It can suppress that the front-end | tip of the microprotrusion 30 moves on the mating surface 11 in the process of elastic deformation.

  As shown in FIG. 5, the first leg 31 and the second leg 32 in each microprojection 30 are connected via the node 35 so as to form the first horizontal angle A. The portion where the second leg portion 32 overlaps the first leg portion 31 can be minimized. Therefore, according to the armrest component 1, when the plate-like portion 21 is pressed with a hand or a finger, the unevenness due to the overlap of the first leg portion 31 and the second leg portion 32 can be suppressed to the minimum. The armrest component 1 can contribute to a uniform tactile sensation.

  Further, in the armrest component 1, each microprotrusion 30 is arranged at the center of each side of the equilateral triangle, and is formed to extend radially from the center of the equilateral triangle to the outside. The second leg portion 32 is formed to make a first horizontal angle A with respect to the first leg portion 31 (see FIG. 5). Therefore, as a result of elastic deformation of each microprotrusion 30 with the action of the pressing load F, a certain microprotrusion 30 does not overlap with other microprotrusions 30. That is, according to the armrest component 1, when the plate-like portion 21 is pressed with a hand or a finger, unevenness due to the overlap of the plurality of minute protrusions 30 can be suppressed to the minimum, and thus the armrest component 1 Can contribute to a uniform tactile sensation.

  As described above, the armrest component 1 according to the first embodiment includes the base material 10 having the mating surface 11 and the skin material 20 made of an elastically deformable resin material, and is formed on the skin material 20. The base material 10 and the skin material 20 are overlapped with each other with the fine protrusions 30 in contact with the mating surface 11. When the armrest component 1 presses the plate-like portion 21 of the skin material 20 against the mating surface 11 side of the hard base material 10 with a finger or hand, the armrest component 1 has a large number of minute protrusions 30 formed on the skin material 20. By elastically deforming, the cushioning property as the armrest component 1 can be imparted and an excellent tactile sensation can be provided.

  Here, each microprotrusion 30 according to the first embodiment has a first leg portion 31, a second leg portion 32, and a node portion 35, and the second leg portion 32 is formed on the plate-like portion 21. On the other hand, it connects with the front-end | tip of the 1st leg part 31 extended so that perpendicular | vertical angle (theta) may be made via the node part 35 (refer FIG. 4, FIG. 5). The second leg portion 32 makes a first vertical angle α with respect to the first leg portion 31 with respect to the Z direction perpendicular to the facing surface 22 (see FIG. 5), and with respect to the facing surface 22. The horizontal X direction and the Y direction extend in a direction that forms a first horizontal angle A with respect to the first leg portion 31 (see FIG. 4).

  By configuring each microprojection 30 in this way, when the plate-like portion 21 of the skin material 20 is pressed against the mating surface 11 of the base material 10 by the pressing load F, the elastic deformation of each microprojection 30 is Further, the first leg portion 31 and the second leg portion 32 can be minimized (see FIGS. 4 to 6). Thereby, according to the said armrest component 1, when the plate-shaped part 21 of the skin material 20 is pressed, generation | occurrence | production of the unevenness | corrugation resulting from the overlap of each microprotrusion 30 can be suppressed, and, thereby, the armrest component 1 is uniform. A tactile feel can be realized.

  As shown in FIGS. 4 and 6, each microprojection 30 has a first vertical angle α composed of a first leg portion 31 and a second leg portion 32 with respect to the Z direction perpendicular to the facing surface 22. Is formed larger than the vertical angle θ constituted by the plate-like portion 21 and the first leg portion 31. Therefore, when the plate-like portion 21 of the skin material 20 is pressed against the mating surface 11 of the base material 10 and each microprotrusion 30 is elastically deformed, it is aligned with the tip of the microprotrusion 30 (the tip of the second leg portion 32). The node portion 35 can be moved without moving the contact point with the surface 11. That is, according to the armrest component 1, uniform tactile sensation can be realized by suppressing the overlapping of the minute protrusions 30, and at the same time, the generation of noise due to the movement of the minute protrusions 30 with respect to the mating surface 11 can be suppressed.

  Furthermore, in the armrest component 1, the skin material 20 is in contact with the base material 10 in a state in which the tips of the microprojections 30 (tip portions of the second leg portions 32) are in surface contact with the surface of the mating surface 11. It is attached by overlapping. Thereby, in the said armrest component 1, when pressing the plate-shaped part 21 with respect to the mating surface 11, the frictional force which acts on each microprotrusion 30 can be enlarged, and the microprotrusion on the surface of the mating surface 11 is carried out. 30 slips (stick slip) can be suppressed. As a result, the armrest component 1 can suitably suppress the generation of abnormal noise accompanying the sliding of the microprojections 30 on the surface of the mating surface 11 of the base material 10.

  As shown in FIG. 5, according to the armrest component 1 according to the first embodiment, the horizontal angle ω configured by the first leg portions 31 in the two adjacent minute protrusions 30 in the arrangement pattern U is mutually different. Since they are determined so as to be separated from each other, when the plate-like portion 21 of the skin material 20 is pressed against the mating surface 11 of the base material 10, each of the two minute protrusions 30 that are adjacent in the arrangement pattern U is configured. It can be set as the aspect which suppressed the overlap of a leg part (the 1st leg part 31, the 2nd leg part 32) to the minimum. Thereby, according to the said armrest component 1, the generation | occurrence | production of the unevenness | corrugation resulting from the overlap of the two adjacent microprotrusions 30 within the arrangement pattern U can be suppressed, and, as a result, the armrest component 1 as a whole realizes a uniform tactile sensation. can do.

(Second Embodiment)
Next, an embodiment (second embodiment) different from the above-described first embodiment will be described in detail with reference to the drawings. Similar to the first embodiment, the armrest component 1 according to the second embodiment is disposed on the vehicle door trim D, and is configured by superimposing the base material 10 and the skin material 20 (FIGS. 1 to 1). 3). The armrest component 1 according to the second embodiment has the same basic configuration as the armrest component 1 according to the first embodiment described above, except for the configuration of a large number of microprojections 30 formed on the skin material 20. ing. Therefore, in the following description, the description of the same configuration as that of the first embodiment is omitted, and a different configuration will be described in detail.

(Specific Configuration of Micro Projection According to Second Embodiment)
Similar to the first embodiment, the microprojections 30 according to the second embodiment have the opposite surface 22 of the plate-like portion 21 and the base material 10 when the plate-like portion 21 in the skin material 20 is pressed with a finger or hand. By elastically deforming in the space S between the mating surfaces 11, cushioning is imparted to the armrest component 1 and a predetermined tactile sensation is provided.

  The microprotrusions 30 according to the second embodiment are integrally formed of an elastically deformable resin material so as to protrude from the plate-like portion 21 of the skin material 20 toward the mating surface 11 of the base material 10. The first leg portion 31, the second leg portion 32, the third leg portion 33, and the two node portions 35 (see FIGS. 7 and 8).

  Each microprotrusion 30 according to the second embodiment is formed in accordance with a predetermined arrangement pattern U over substantially the entire facing surface 22 of the skin material 20, and as shown in FIG. Are formed so as to extend radially outward from the center of the arrangement pattern U having the regular triangular shape.

  The 1st leg part 31 concerning 2nd Embodiment comprises the base end part of each microprotrusion 30 projected and formed toward the mating surface 11 from the opposing surface 22 of the plate-shaped part 21 similarly to 1st Embodiment. doing. The first leg 31 protrudes in an inclined manner from the facing surface 22 of the plate-like portion 21, and is perpendicular to the plate-like portion 21 with respect to the Z direction perpendicular to the facing surface 22 of the plate-like portion 21. An angle θ is formed (see FIGS. 7 and 8).

  Although the vertical angle θ in the second embodiment shows a numerical value different from the vertical angle θ in the first embodiment, the vertical angle θ may be configured to show the same value.

  And about the X direction and Y direction horizontal to the opposing surface 22 of the plate-shaped part 21, each 1st leg part 31 is formed in the direction extended radially toward the outer side from the center in the arrangement pattern U of equilateral triangle shape. (See FIG. 8). That is, also in the second embodiment, the horizontal angle ω configured by the first leg portions 31 of the two minute protrusions 30 adjacent in the arrangement pattern U is determined to be separated from each other. The horizontal angle ω is also an angle formed by the central axis of the first leg portion 31 of each minute protrusion 30 adjacent in the arrangement pattern U in the X direction and the Y direction.

  As in the first embodiment, a node 35 is formed between the tip of the first leg 31 and the end of the second leg 32, and the first leg 31 and the second leg 31 are connected to each other. The apex portion of the corner constituted by the leg portion 32 is configured (see FIGS. 7 and 8).

  The second leg portion 32 according to the second embodiment is connected to the tip end portion of the first leg portion 31 via the node portion 35, and is at a predetermined angle (a first vertical to be described later) with respect to the first leg portion 31. It extends from the joint 35 toward the mating surface 11 so as to make an angle α, a first horizontal angle A).

  The second leg portion 32 is interposed via the node portion 35 so as to form a predetermined first vertical angle α with respect to the first leg portion 31 with respect to the Z direction perpendicular to the facing surface 22 of the plate-like portion 21. Are connected (see FIG. 7). Further, with respect to the X direction and the Y direction that are horizontal with respect to the facing surface 22 of the plate-like portion 21, the second leg portion 32 according to the second embodiment has a predetermined first horizontal direction with respect to the first leg portion 31. They are connected via a node 35 so as to make an angle A (see FIG. 8).

  Note that the first vertical angle α and the first horizontal angle A according to the second embodiment are configured to show different numerical values from the first vertical angle α and the first horizontal angle A in the first embodiment. It is also possible to configure to show the same value.

  As shown in FIGS. 7 and 8, in the minute protrusion 30 according to the second embodiment, the third leg portion 33 is connected to the second leg portion 32 via the node portion 35. The third leg portion 33 according to the second embodiment constitutes the tip portion of the microprojection 30 according to the second embodiment, and when the skin material 20 is attached to the base material 10, with respect to the mating surface 11. Are configured to be in surface contact with each other.

  The third leg portion 33 is connected to the second leg portion 32 via the node portion 35 so as to form a predetermined second vertical angle β with respect to the Z direction perpendicular to the facing surface 22 of the plate-like portion 21. Are connected (see FIG. 7). The second vertical angle β is an angle formed by the central axis of the second leg portion 32 and the central axis of the third leg portion 33 with respect to the Z direction.

  As shown in FIG. 8, the third leg 33 has a predetermined second horizontal angle with respect to the second leg 32 with respect to the X direction and the Y direction horizontal to the facing surface 22 of the plate-like part 21. It is connected through the node 35 so as to make B. The second horizontal angle B is an angle formed by the central axis of the second leg portion 32 and the central axis of the third leg portion 33 with respect to the X direction and the Y direction.

  The second vertical angle β is different from the vertical angle θ and the first vertical angle α in the second embodiment, but is determined to be the same value as either the vertical angle θ or the first vertical angle α. Is also possible. The second horizontal angle B is different from the first horizontal angle A according to the second embodiment, but can be determined to be the same value as the first horizontal angle A.

  And each microprotrusion 30 according to the second embodiment draws a spiral from the facing surface 22 of the skin material 20 toward the mating surface 11 of the base material 10 as shown in FIGS. Protrusively formed.

(Elastic deformation of microprotrusions according to the second embodiment)
In the armrest component 1 according to the second embodiment, when the plate-like portion 21 of the skin material 20 is pressed with a finger or hand and a pressing load F acts, a large number of microprojections 30 are formed as in the first embodiment. Elastic deformation is caused in the space S, and cushioning is imparted to the armrest component 1. Here, the operation | movement at the time of the elastic deformation of the microprotrusion 30 of the structure mentioned above is demonstrated in detail, referring FIGS.

  As shown in FIG. 9, when the plate-like portion 21 of the skin material 20 is pressed with a hand or a finger, a pressing load F acts on the plate-like portion 21 and is displaced toward the mating surface 11 side of the base material 10. Therefore, the space S is reduced in the Z direction. Thereby, the microprotrusions 30 are compressed and deformed in the space S by the action of the pressing load F.

  In the elastic deformation of the microprotrusions 30 in the second embodiment, each node 35 in the microprotrusions 30 moves in a direction horizontal to the mating surface 11 and the opposing surface 22 (for example, the first leg) in accordance with the action of the pressing load F. It moves toward the corner by the part 31 and the second leg part 32 and the apex side of the corner by the second leg part 32 and the third leg part 33). At this time, the tip of the third leg 33 is in surface contact with the mating surface 11, and a friction force of a predetermined level or more acts on the tip of the third leg 33 (that is, the tip of the microprojection 30). It can suppress that the front-end | tip of the microprotrusion 30 moves on the mating surface 11 in the process of elastic deformation.

  As shown in FIG. 8, the first leg portion 31 and the second leg portion 32 of each microprojection 30 are connected via a node portion 35 so as to form a first horizontal angle A, and further, the second leg portion. 32 and the third leg 33 are connected via the node 35 so as to form the second horizontal angle B, and therefore the first leg 31, the second leg 32, the third leg in the Z direction. The part where the part 33 overlaps can be minimized. Therefore, according to the armrest component 1, when the plate-like portion 21 is pressed with a hand or a finger, unevenness due to the overlap of the first leg portion 31, the second leg portion 32, and the third leg portion 33 is minimized. Therefore, it can contribute to a uniform tactile sensation as the armrest component 1.

  Further, in the armrest component 1, each microprojection 30 is disposed at the center of each side of the equilateral triangle, and is formed to extend radially from the center of the equilateral triangle so as to draw a spiral. The second leg 32 makes a first horizontal angle A with respect to the first leg 31, and the third leg 33 makes a second horizontal angle B with respect to the second leg 32, respectively. (See FIG. 8). Therefore, as a result of elastic deformation of each microprotrusion 30 with the action of the pressing load F, a certain microprotrusion 30 does not overlap with other microprotrusions 30. That is, according to the armrest component 1, when the plate-like portion 21 is pressed with a hand or a finger, unevenness due to the overlap of the plurality of minute protrusions 30 can be suppressed to the minimum, and thus the armrest component 1 Can contribute to a uniform tactile sensation.

  In the armrest component 1 according to the second embodiment, the shape and number of the leg portions (the first leg portion 31, the second leg portion 32, and the third leg portion 33) and the node portions 35 that constitute each microprojection 30 are provided. Can be suitably adjusted (tuned), and the cushioning properties and tactile sensation of the armrest component 1 can be adjusted to a desired state.

  As described above, the armrest component 1 according to the second embodiment includes the base material 10 having the mating surface 11 and the skin material 20 made of an elastically deformable resin material, as in the first embodiment. The base material 10 and the skin material 20 are overlapped with each other in a state in which the minute protrusions 30 formed on the skin material 20 are in contact with the mating surface 11. And when the said armrest component 1 presses the plate-shaped part 21 of the skin material 20 to the mating surface 11 side in the hard base material 10 with a finger | toe or a hand, many microprotrusions 30 formed in the skin material 20 By elastically deforming, the cushioning property as the armrest component 1 can be imparted and an excellent tactile sensation can be provided.

  Here, each microprotrusion 30 according to the second embodiment includes a first leg portion 31, a second leg portion 32, a third leg portion 33, and two node portions 35, and the skin material 20 Is formed so as to project from the facing surface 22 toward the mating surface 11 of the substrate 10 in a spiral manner. In the second embodiment, the second leg portion 32 is connected to the tip end of the first leg portion 31 extending so as to make a vertical angle θ with respect to the plate-like portion 21 via the node portion 35. The third leg portion 33 is connected to the second leg portion 32 via a node portion 35 (see FIGS. 7 and 8).

  Then, with respect to the Z direction perpendicular to the facing surface 22, the second leg portion 32 extends in a direction that forms a first vertical angle α with respect to the first leg portion 31, and the third leg portion 33 is The second leg 32 extends in a direction that forms a second vertical angle β with respect to the second leg 32 (see FIG. 7). The first leg 31 extends in a direction making a first horizontal angle A, and the third leg 33 extends in a direction making a second horizontal angle B with respect to the second leg 32 ( (See FIG. 8).

  According to the armrest component 1 according to the second embodiment, the plate-like portion 21 of the skin material 20 is moved against the mating surface 11 of the base material 10 by the pressing load F by configuring each microprojection 30 in this way. When pressed, the elastic deformation of each microprotrusion 30 can be in a mode in which the overlap of the first leg portion 31, the second leg portion 32, and the third leg portion 33 is minimized (FIGS. 7 to 7). 9). Thereby, according to the said armrest component 1, when the plate-shaped part 21 of the skin material 20 is pressed, generation | occurrence | production of the unevenness | corrugation resulting from the overlap of each microprotrusion 30 can be suppressed, and, thereby, the armrest component 1 is uniform. A tactile feel can be realized.

  According to the armrest component 1 according to the second embodiment, each minute protrusion 30 has the first leg 31, the second leg 32, the third leg 33, and the like as described above. When the plate-like portion 21 of the skin material 20 is pressed against the mating surface 11 of the base material 10 and each microprojection 30 is elastically deformed, the tip of the microprojection 30 (the tip portion of the third leg portion 33) and the mating surface 11 are used. The node portion 35 can be moved without moving the contact point with (see FIG. 9). That is, according to the armrest component 1, uniform tactile sensation can be realized by suppressing the overlapping of the minute protrusions 30, and at the same time, the generation of noise due to the movement of the minute protrusions 30 with respect to the mating surface 11 can be suppressed.

  Furthermore, in the armrest component 1, the skin material 20 is in contact with the base material 10 in a state in which the tips of the microprojections 30 (tip portions of the third leg portions 33) are in surface contact with the surface of the mating surface 11. It is attached by overlapping. Thereby, in the said armrest component 1, when pressing the plate-shaped part 21 with respect to the mating surface 11, the frictional force which acts on each microprotrusion 30 can be enlarged, and the microprotrusion on the surface of the mating surface 11 is carried out. 30 slips (stick slip) can be suppressed. As a result, the armrest component 1 can suitably suppress the generation of abnormal noise accompanying the sliding of the microprojections 30 on the surface of the mating surface 11 of the base material 10.

  As shown in FIG. 8, according to the armrest component 1 according to the second embodiment, the horizontal angle ω configured by the first leg portions 31 in the two adjacent minute projections 30 in the arrangement pattern U is mutually different. Since they are determined so as to be separated from each other, when the plate-like portion 21 of the skin material 20 is pressed against the mating surface 11 of the base material 10, each of the two minute protrusions 30 that are adjacent in the arrangement pattern U is configured. It can be set as the aspect which suppressed the overlap of a leg part (the 1st leg part 31, the 2nd leg part 32, the 3rd leg part 33) to the minimum. Thereby, also in the said armrest component 1, generation | occurrence | production of the unevenness | corrugation resulting from the overlap of the two adjacent microprotrusions 30 within the arrangement | positioning pattern U can be suppressed, Therefore A uniform tactile sensation is realizable as the armrest component 1 whole. .

  Although the present invention has been described based on the embodiments, the present invention is not limited to the above-described embodiments, and various improvements and modifications can be made without departing from the spirit of the present invention. For example, in the above-described embodiment, the present invention is applied to the armrest component 1 in the vehicle door trim D, but is not limited to this aspect. The present invention can be applied to, for example, interior parts for vehicles such as luggage side trims, instrument panels, and console parts, ornaments attached to the interior parts, etc. It is also possible to apply.

  Moreover, as a constituent material of the base material 10 corresponding to the first member in the present invention, a relatively hard synthetic resin material such as hard polyvinyl chloride, polypropylene, polyethylene, ABS or the like can be suitably used. As long as it is relatively hard, various modes can be used, and other materials such as metals can also be used.

  And as a constituent material of the skin material 20 equivalent to the 2nd member in this invention, various thermoplastic resins, such as soft polyvinyl chloride, a styrene type, an olefin type, and a polyester type, can be used suitably.

  In the above-described embodiment, the microprojection 30 includes the first leg portion 31, the second leg portion 32, the node portion 35, the first leg portion 31, the second leg portion 32, and the third leg portion. Although the structure which has the leg part 33 and the node part 35 was demonstrated, it is not limited to this aspect. It is also possible to further increase the number of leg portions and node portions constituting the microprojections 30. Thereby, the deformation load of each microprotrusion 30 can be adjusted (tuned) suitably, and the cushioning property and tactile sensation in the armrest component 1 can be adjusted to a desired state.

  Moreover, it is also possible to affix a surface layer member on the design surface of the plate-like portion 21 in the skin material 20, and examples of the surface layer member include soft polyvinyl chloride, styrene-based, olefin-based, and polyester-based materials. Various thermoplastic resins can be used, and woven fabrics, non-woven fabrics, knitted fabrics, vinyl chloride, soft films, and the like can be employed.

  In the embodiment described above, each microprojection 30 is formed so as to draw a predetermined arrangement pattern U over substantially the entire facing surface 22 of the skin material 20, for example, over almost the entire facing surface 22. When a large number of polygons are regularly arranged, one minute protrusion 30 is formed on each side of the arrangement pattern U of each polygon. However, the present invention is limited to this mode. is not. For example, a plurality of minute protrusions 30 can be arranged and formed on each side of the polygonal arrangement pattern U.

  As the arrangement pattern U in each microprotrusion 30, a regular triangle, a square, a regular hexagon, a rectangle, a rhombus, a parallelogram, an unequal triangle, an unequal hexagon, or the like may be used continuously as a polygon. Is possible. The polygon used for the arrangement pattern U is not limited to a single type of polygon, and the arrangement pattern U is configured using a plurality of types of polygons (for example, regular triangles and regular hexagons). It is also possible.

  Further, in the above-described embodiment, with respect to the X direction and the Y direction, each first leg 31 is formed in a direction extending radially from the center of the arrangement pattern U having an equilateral triangle shape toward the outside. (See FIG. 5 and FIG. 8), this aspect is applicable if the horizontal angle ω formed by the first leg portions 31 of the two adjacent microprotrusions 30 in the arrangement pattern U is determined to be separated from each other. It is not limited to. For example, in two adjacent minute protrusions 30 in the arrangement pattern U, the first leg 31 of one of the minute protrusions 30 extends toward the inner side of the arrangement pattern U, and the first leg 31 of the other minute protrusion 30. It is also possible to adopt a configuration that extends toward the outer side of the arrangement pattern U.

DESCRIPTION OF SYMBOLS 1 Armrest part 10 Base material 11 Matching surface 20 Skin material 21 Plate-shaped part 22 Opposite surface 30 Microprotrusion 31 1st leg part 32 2nd leg part 33 3rd leg part 35 Node part D Vehicle door trim U Arrangement pattern (theta) Vertical angle α First vertical angle β Second vertical angle ω Horizontal angle A First horizontal angle B Second horizontal angle

Claims (5)

A first member having a predetermined mating surface;
A plate-like portion extending along the mating surface; and a plurality of protrusions formed to project from the plate-like portion toward the mating surface and forming a space between the plate-like portion and the mating surface, A second member made of an elastically deformable resin material disposed so as to be superimposed on the first member in a state where the projection is in contact with the mating surface, and the projection presses the mating surface It is a superposed composite part that gives cushioning properties by being elastically deformed,
Each protrusion of the second member is
A first leg extending to form a predetermined vertical angle with respect to the plate-like portion with respect to a direction perpendicular to the surface of the plate-like portion;
A direction that makes a predetermined first vertical angle with respect to the first leg with respect to the vertical direction, and a direction with a predetermined first horizontal angle with respect to the first leg with respect to a direction horizontal to the plate-like part. A second leg extending to
An overlapping composite part comprising: a node part connecting the first leg part and the second leg part. Each of the protrusions is
With respect to the vertical direction, the first vertical angle formed by the first leg portion and the second leg portion is formed larger than the vertical angle formed by the plate-like portion and the first leg portion. The superimposed composite part according to claim 1, wherein: Each of the protrusions is
A third leg extending at a predetermined second vertical angle with respect to the second leg with respect to the vertical direction and extending in a direction with a predetermined second horizontal angle with respect to the second leg with respect to the horizontal direction. And
The overlapping composite part according to claim 1, further comprising a node portion that connects the second leg portion and the third leg portion. The tip of each projection is
The superposed composite part according to claim 1, wherein the superposed composite part is in surface contact with the mating surface of the first member. The first leg of each projection is
The overlapping composite component according to any one of claims 1 to 4, wherein the horizontal angles of two first leg portions adjacent in the arrangement pattern are determined so as to be separated from each other.

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