JP2008190644A - Clip mounting structure of molding assembly, molding, and molding production method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a mounting clip from being attached to a side molding in an erroneous mounting direction and to make it possible to always attach the mounting clip in a correct mounting direction. <P>SOLUTION: The clip mounting structure includes an engagement prevention portion 26 formed in such a manner that it does not block off an engagement hole 19 of a projection 14 provided on a rear side of the side molding 11. The engagement prevention portion 26 prevents an engagement protrusion 24 of the mounting clip 15 from fitting in and engaging with an upper opening portion of the engagement hole 19 and enables the engagement protrusion 24 of the mounting clip 15 to fit in and engage with a lower opening portion of the engagement hole 19. It is thus possible to prevent the mounting clip 15 from being attached to the side molding 11 in the erroneous mounting direction (in the mounting direction where the engagement protrusion 24 is positioned on the side of the upper opening portion of the engagement hole 19). Therefore, it is possible to always attach the mounting clip 15 to the side molding 11 only in the correct mounting direction (in the mounting direction where the engagement protrusion 24 is positioned on the side of the lower opening portion of the engagement hole 19). <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a clip mounting structure of a molded product assembly that can be attached to an attached body via a clip, a molded product used in the mounting structure, and a method of manufacturing the molded product.

A resin molded product such as a side protector molding of an automobile is attached to a vehicle body panel by a clip attached to the back side of the resin molded product as described in, for example, Japanese Patent Application Laid-Open No. 2005-98437. There is something that was made. In Patent Document 1, an engagement hole that penetrates the protrusion is formed in the protrusion provided on the back surface side of the resin molded product, and is engaged with one inner surface of a pair of holding portions provided in the clip. Resin molding by forming a convex part, covering the projecting part of the resin molded product with the clip clamping part, pressing the clip, and engaging the engaging convex part of the clip with the engaging hole of the projecting part A clip is attached to the back side of the product.
Japanese Patent Laying-Open No. 2005-98437 (pages 4 to 5, FIG. 1 etc.)

  By the way, depending on the shape of the body panel of the automobile, the shape of the resin molded product and the shape of the clip may be given directionality (for example, the resin molded product and the clip may be asymmetric in the vertical direction). However, the clip mounting structure disclosed in Patent Document 1 has a structure in which the engaging convex portion of the clip can be fitted into either of the upper and lower two openings of the engaging hole that penetrates the protruding portion of the resin molded product. The clip can be mounted in the mounting direction in which the engaging convex portion is fitted and engaged with the opening on the upper side of the engaging hole. On the contrary, the clip is engaged with the opening on the lower side of the engaging hole. It is also possible to mount the clip in the mounting direction in which the mating convex portion is fitted and engaged. For this reason, when the resin molded product and the clip each have a direction in the vertical direction (for example, when the resin molded product and the clip are asymmetric in the vertical direction, respectively), If the clip is mounted in the wrong mounting direction in the vertical direction, the resin molded product may not be attached to the vehicle body panel in the correct direction.

  The present invention has been made in consideration of such circumstances. Accordingly, the object of the present invention is to prevent the clip from being mounted in the wrong mounting direction on the molded product, and always to the molded product. The purpose is to enable the clip to be mounted in the correct mounting direction.

  In order to achieve the above object, according to the first and seventh aspects of the present invention, the molded product includes a projecting portion projecting from the back surface of the molded product toward the mounting hole, and a projecting direction of the projecting portion. An engagement hole penetrating the protruding portion in the direction, and the clip includes a pair of holding portions that hold the protruding portion of the molded product from both sides, and an inner surface of one of the pair of holding portions. And an engagement convex portion that engages and engages with one opening portion of the engagement hole of the molded product, and an elastically deformable elastic engagement leg that engages with the mounting hole of the mounted body. An engagement preventing portion that prevents the engagement convex portion of the clip from fitting into the other opening portion or the vicinity thereof is provided at the other opening portion of the engagement hole of the molded product. And a space for allowing the engagement convex portion of the clip to fit into one opening side is provided, and the engagement hole of the molded product is provided. Crowded clip engaging Mari projections fit of the opening of the square by engagement, in which the clip in the molded article is to be mounted.

  In this configuration, even if the clip is pushed in and the engagement protrusion is engaged with the other opening of the engagement hole, the engagement protrusion is engaged when the position of the other opening of the engagement hole is reached. Since the fitting prevention portion prevents the fitting, the engagement convex portion is not erroneously engaged with the other opening portion of the engagement hole if the clip mounting direction is mistaken. On the contrary, only when the insertion is performed in the correct mounting direction, the engagement protrusion can be fitted into one of the openings of the engagement hole to be engaged. As a result, it is possible to prevent the clip from being attached to the molded product in the wrong mounting direction (the mounting direction in which the engaging convex portion is located on the other opening side of the engaging hole). On the other hand, the clip can be mounted only in the correct mounting direction (the mounting direction in which the engaging convex portion is located on one opening side of the engaging hole).

  In addition, since the engagement preventing portion is provided so as not to block the entire engagement hole of the molded product, when the surface of the molded product is subjected to surface treatment such as painting or plating, the molded product is placed in the treatment liquid. Even if it is immersed, the processing liquid that has entered the engaging hole can be easily drained, and the processing liquid can be prevented from accumulating in the engaging hole.

  In this case, as in claims 2 and 8, the engagement preventing portion may be formed in the other opening of the engagement hole so as to partially block the opening.

  Further, as in claims 3 and 9, the engagement preventing portion is preferably formed such that the cross-sectional area of the other opening of the engagement hole is smaller than the cross-sectional area of the engagement convex portion. If it does in this way, it can prevent reliably that an engagement convex part fits in the other opening part of an engagement hole.

  Moreover, you may make it form an engagement prevention part in a column shape along the protrusion direction of a protrusion part. Alternatively, as in claims 5 and 11, the engagement preventing portion may be formed in a columnar shape along a direction intersecting with the protruding direction of the protruding portion. In any case, a columnar engagement blocking portion can be provided so as to partially block the other opening of the engagement hole and not block the engagement hole.

  Further, according to the sixth and twelfth aspects, the engagement preventing portion is provided outside the other opening portion of the engagement hole and formed in a column shape along the protruding direction of the protruding portion. You may make it form the fitting ditch | groove of the shape which can fit an engagement prevention part in the clamping part of which the engagement convex part is not provided. In this way, in addition to making it easier to notice the correct / incorrect direction by visual inspection, the clip is correctly attached to the molded product (attachment direction in which the engagement convex portion is located on one opening side of the engagement hole). Since the engagement preventing portion is fitted into the fitting concave groove of the holding portion when the mounting portion is mounted, the protruding portion can be smoothly covered with the holding portion. On the other hand, if the clip is attached to the molded product in the wrong mounting direction (the mounting direction in which the engaging convex portion is located on the other opening side of the engaging hole), the fitting groove is not formed. Since the front end of the engagement preventing portion abuts on the front end of the sandwiching portion, it is possible to prevent the projecting portion from being covered with the sandwiching portion. Moreover, even if the clamping portion is forcibly covered with the protruding portion, the engagement preventing portion can prevent the engagement convex portion from engaging with the other opening portion of the engagement hole.

  When the molded product of the present invention is manufactured, as in claim 13, a pair of open / close molds formed with body cavities for forming an outer shape including a projecting portion of the molded product when openable and closed. A slide mold for forming an engagement hole that is slidable in a direction crossing the opening / closing direction of the open / close mold, and an engagement prevention for forming an engagement prevention portion at a tip of the slide mold A part forming cavity is formed, and when the opening and closing mold is closed and the slide mold is advanced, an injection mold in which the main body cavity and the engagement blocking part forming cavity are connected is used, and the pair of opening and closing molds are closed and slid A mold closing step in which the slide mold is moved forward until the tip of the mold hits the wall surface of the portion of the opening / closing mold main body cavity where the protruding portion of the molded product is formed, and the body cavity in the pair of opening / closing molds is melted Thermoplastic An injection molding process for forming a molded product in which an engagement hole and an engagement prevention portion are formed in the projecting portion by injecting a resin material and filling both cavities, and a pair of opening and closing dies while moving the slide die backward It is good to perform the extraction process which opens and takes out a molded article. If it does in this way, when shape | molding a molded product, an engagement hole and an engagement prevention part can be simultaneously shape | molded in the protrusion part of a molded product, and the molded product of this invention can be manufactured easily.

  In this case, as in the fourteenth aspect, the engagement preventing portion forming cavity at the tip end portion of the slide mold may be formed in a shape that forms the engagement preventing portion into a columnar shape along the protruding direction of the protruding portion. good. Alternatively, the cavity for molding the engagement preventing portion at the tip end portion of the slide mold is formed in a shape that forms the engagement preventing portion into a columnar shape along the direction intersecting the projecting direction of the projecting portion. You may do it. In either case, the columnar engagement blocking portion can be formed so as to partially block the other opening of the engagement hole and not block the engagement hole.

  Moreover, you may make it perform the surface treatment process which performs a predetermined | prescribed surface treatment to the surface of a molded article after the taking-out process like Claim 16. Since the engagement preventing part is provided so as not to block the engagement hole of the molded product, even if the molded product is immersed in the processing liquid when the surface of the molded product is subjected to surface treatment such as painting or plating, The treatment liquid that has entered the engagement hole can be easily drained, and the treatment liquid can be prevented from accumulating in the engagement hole.

  Hereinafter, several embodiments in which the present invention is applied to a side molding for side decoration of a car or a side protector molding for side decoration and protection (hereinafter these malls are collectively referred to as “side molding”). explain.

A first embodiment of the present invention will be described with reference to FIGS.
First, a schematic configuration of the side molding 11 (molded product) will be described based on FIGS. 1 to 3. The long side molding 11 is a hollow resin molded product molded by gas-assisted injection molding of a thermoplastic resin such as PP (polypropylene) or ABS (acrylonitrile butadiene styrene) resin. The side molding 11 may be used without being subjected to surface treatment. However, for the purpose of improving decorativeness, weather resistance, etc., the surface of the side molding 11 is subjected to surface treatment such as painting or plating. Also good. Alternatively, a colored film may be laminated and integrated on the surface of the side molding 11.

  A protrusion 12 extending in the longitudinal direction is integrally formed on the back side of the side molding 11, and a hollow portion 13 extending in the longitudinal direction is formed inside the protrusion 12. A plurality of protrusions 14 are integrally formed on the back surface of the hollow protrusion 12 at a predetermined interval along the longitudinal direction. As shown in FIG. 1, the mounting clips 15 mounted on the protrusions 14 are respectively inserted into mounting holes 17 (see FIG. 10) of an oval shape or a rectangular shape provided on the vehicle body panel 16 (attachment body). The side molding 11 is attached to the vehicle body panel 16 via the mounting clip 15 by being inserted and locked. Since the upper part of the vehicle body panel 16 above the attachment portion of the side molding 11 is curved outwardly with a predetermined radius of curvature R, the side molding 11 and the mounting clip 15 are respectively connected to the upper and lower sides of the vehicle. It is formed in an asymmetric shape in the direction (the width direction of the side molding 11 and the mounting clip 15).

  As shown in FIGS. 4 and 5, each protruding portion 14 of the side molding 11 is formed so as to protrude from the back surface of the protrusion 12 toward the vehicle body panel 16 side (mounting hole 17 side). The width dimension T1 in the width direction and the dimension L1 in the longitudinal direction (see FIG. 4) are smaller than the dimension D1 in the width direction and the dimension D2 in the longitudinal direction of the mounting hole 17 of the vehicle body panel 16, respectively (see FIG. 10). It is formed as follows. Thereby, when the side molding 11 is attached to the vehicle body panel 16, the protruding portion 14 is inserted through the mounting hole 17 and protrudes to the back side of the vehicle body panel 16.

  A portion of the projecting portion 14 projecting to the rear surface side of the vehicle body panel 16 has a direction in which the engagement hole 19 for mounting the mounting clip 15 intersects the projecting direction of the projecting portion 14, that is, the vehicle vertical direction ( An engaging convex portion 24 (see FIG. 1) of the mounting clip 15 described later is formed in the opening 25L below the engaging hole 19 so as to penetrate the protruding portion 14 in the width direction of the side molding 11). It fits and engages.

  On the other hand, in the upper opening portion 25U of the engagement hole 19, an engagement blocking portion 26 that prevents the engagement convex portion 24 of the mounting clip 15 from fitting into the upper opening portion 25U is provided. . The engagement preventing portion 26 partially blocks the central portion of the upper opening 25U (partially leaves the upper opening 25U) and engages the mounting clip 15 on the lower opening 25L side. It is provided so as to leave a space that allows the convex portion 24 to be fitted. The engagement preventing portion 26 is formed in a semi-cylindrical shape along the protruding direction of the protruding portion 14, and is provided in the upper opening 25U so as not to protrude outside the engaging hole 19 (side surface of the protruding portion 14). It has been. Further, the engagement preventing portion 26 is formed such that the cross-sectional area of the upper opening 25U of the engagement hole 19 is smaller than the cross-sectional area of the engagement convex portion 24, and the upper opening 25U of the engagement hole 19 is formed. Thus, it is possible to reliably prevent the engagement convex portion 24 from being fitted into the engagement.

  In addition, ribs 14 a that serve as both positioning of the mounting clip 15 and reinforcement of the protruding portion 14 are integrally formed at the four corners of the base portion of the protruding portion 14. These ribs 14a have an inner dimension L2 between the two ribs 14a in the longitudinal direction larger than an outer dimension L3 (see FIG. 8) of the sandwiching portion 21 of the mounting clip 15 described later, and an outer dimension L1 of the two ribs 14a (see FIG. 8). A dimension L1) of the projecting portion 14 in the longitudinal direction of the side molding 11 is formed to be smaller than an inner dimension L4 (see FIG. 8) between two elastic locking legs 23 of the mounting clip 15 described later. Furthermore, the dimension T2 (see FIG. 4) in the thickness direction of the portion of the protrusion 14 where the rib 14a is formed is larger than the dimension D1 in the width direction of the mounting hole 17 of the vehicle body panel 16 (see FIG. 10). When the side molding 11 is attached to the vehicle body panel 16, the rib 14 a of the protruding portion 14 can be inserted into the mounting hole 17.

  On the other hand, as shown in FIGS. 6 to 10, the mounting clip 15 is formed by injection molding of an elastic resin such as POM (polyacetal), PA (polyamide), PBT (polybutylene terephthalate) or the like. The mounting clip 15 has a bottom portion 20 and a pair of elastically deformable holding portions which are provided on both sides of the bottom portion 20 so as to have a substantially U-shaped cross section and hold the protruding portion 14 of the side molding 11 from both sides. 21 and two elastically deformable pairs (a total of four) of elastic locking legs 23 each having a locking claw portion 22 locked to the edge of the mounting hole 17 of the vehicle body panel 16 are integrally formed.

  Hereinafter, for convenience of explanation, when the side molding 11 is correctly attached to the vehicle body panel 16 via the mounting clip 15, the upper clamping portion 21, the locking claw portion 22, and the elastic locking leg 23 are respectively clamped on the upper side. 21U, upper locking claw portion 22U, upper elastic locking leg 23U, and the lower clamping portion 21, locking claw portion 22 and elastic locking leg 23 are respectively connected to the lower clamping portion 21L and the lower side. In some cases, the claw portion 22L and the lower elastic locking leg 23L are written.

  As described above, the mounting clip 15 is formed in an asymmetric shape in the vertical direction of the vehicle (the width direction of the side molding 11 and the mounting clip 15) according to the shape of the vehicle body panel 16, as shown in FIG. When attached to the vehicle body panel 16, the length dimension H1 of the upper elastic locking leg 23U (the length dimension from the tip of the mounting clip 15 to the upper locking claw portion 22U) is the length of the lower elastic locking leg 23L. It is larger than the dimension H2 (the length dimension from the tip of the mounting clip 15 to the lower locking claw portion 22L), and the width dimension W1 from the center in the width direction of the mounting clip 15 to the upper locking claw portion 22U is the lower locking. It is formed to be larger than the width dimension W2 up to the claw portion 22L.

  As shown in FIGS. 6 to 10, the engagement clip 15 is engaged with and engaged with the inner wall surface of the lower holding portion 21 </ b> L of the mounting clip 15 by fitting into the lower opening portion 25 </ b> L of the engagement hole 19 of the protrusion 14. The joint convex portion 24 is formed at a position that is closer to the base side of the protruding portion 14 than the bottom portion 20 (the tip side of the lower holding portion 21L). Further, at the four corners of the bottom portion 20 of the mounting clip 15, two elastic locking legs 23 extending toward the root side of the protruding portion 14 are formed from positions that are separated from the clamping portion 21 in the longitudinal direction and independent from each other. A pair (four in total) of elastic locking legs 23 are formed so as to be located on both sides in the width direction and the longitudinal direction of the projecting portion 14, and the locking claws 22 are respectively provided at the tips of the elastic locking legs 23. Is formed. Each locking claw portion 22 is formed in a substantially concave shape so as to be fitted and locked to the edge of the mounting hole 17 of the vehicle body panel 16. By positioning the base of each elastic locking leg 23 on the bottom part 20 and the position of the locking claw part 22 closer to the base side of the protruding part 14 than the engaging hole 19 of the protruding part 14, each elastic locking leg 23 The length of 23 is sufficiently secured so that each elastic locking leg 23 is not excessively elastically deformed when attached to the vehicle body panel 16 to be described later.

  In addition, each pair of the two elastic locking legs 23 (the upper elastic locking leg 23U and the lower elastic locking leg 23L) facing each other in the width direction of the mounting clip 15 expands in a substantially V shape in a free state. (See FIGS. 6 and 9). Thus, when the elastic locking leg 23 of the mounting clip 15 is inserted into the mounting hole 17 of the vehicle body panel 16 and engaged, the elastic locking leg 23 of the mounting clip 15 is smoothly guided and inserted into the mounting hole 17. In addition, as the elastic locking legs 23 of the mounting clip 15 are inserted into the mounting holes 17, the elastic locking legs 23 are finally deformed inward in the direction of approaching each other, and finally the elastic locking legs 23 of each pair. The locking claw portion 22 can be elastically engaged with the edge of the mounting hole 17 by the elastic restoring force.

  Further, when the mounting clip 15 is inserted into the mounting hole 17, a thin ridge guide 27 that first enters the mounting hole 17 is formed at the distal end portion of the mounting clip 15. In addition, an inclined guide 28 for facilitating insertion of the mounting clip 15 into the mounting hole 17 is formed.

Next, the manufacturing method of the side molding 11 is demonstrated using FIG.11 and FIG.12.
First, the injection mold 29 of the side molding 11 will be described. As shown in FIG. 11, the injection mold 29 has a pair of opening and closing formed with side molding molding cavities 30 (main body cavities) for molding the outer shape including the protrusions 14 of the side molding 11 when the mold is closed. A cavity mold 31 and a core mold 32 which are molds are provided so as to be opened and closed in the vertical direction, and a slide mold 33 for forming the engagement hole 19 is provided so as to be slidable in the horizontal direction. The slide mold 33 is connected to the cylinder rod 35 of the air cylinder 34, and the slide mold 33 is a portion where the slide mold 33 molds the protrusion 14 of the side molding mold cavity 30 by the air cylinder 34. Within 30a, it moves forward in a direction intersecting the protruding direction of the projecting portion forming cavity 30a, or retreats in a direction retracting from the projecting portion forming cavity 30a.

  As shown in FIG. 12, an engagement preventing portion forming cavity 36 for forming the engagement preventing portion 26 is formed at the distal end portion of the slide mold 33. The engagement preventing portion forming cavity 36 is formed in a concave groove shape so as to shape the engagement preventing portion 26 into a semi-cylindrical shape along the protruding direction of the protruding portion 14. When the cavity mold 31 and the core mold 32 are closed and the slide mold 33 is moved forward, the side molding cavity 30 and the engagement preventing part molding cavity 36 are connected.

  When manufacturing the side molding 11, first, a mold closing process is executed. In this mold closing process, after the cavity mold 31 and the core mold 32 are closed, the slide mold 33 is moved until the tip 33a of the slide mold 33 comes into pressure contact with the wall surface of the protruding molding cavity 30a of the side molding mold 30. Move forward.

  Thereafter, an injection molding process is performed. In this injection molding process, the molten thermoplastic resin material is injected into the side molding mold cavity 30 to fill the side molding molding cavity 30 and the engagement blocking portion molding cavity 36, and the thermoplastic resin material A hollow portion 13 extending in the longitudinal direction is formed inside the protrusion 12 of the side molding 11 by gas-assisted injection molding in which high-pressure gas is injected into the side molding molding cavity 30 during or immediately after injection. Thereafter, the side molding 11 in which the engagement hole 19 and the engagement prevention portion 26 are formed in the protruding portion 14 is molded by cooling and solidifying the thermoplastic resin material injected and filled in the side molding molding cavity 30.

  Thereafter, an extraction process is performed. In this extraction step, the slide mold 33 is moved backward until the slide mold 33 is retracted from the protruding molding cavity 30a of the side molding mold cavity 30, and then the cavity mold 31 and the core mold 32 are opened, and the side from the cavity mold or the core mold is opened. The molding 11 is removed and the side molding 11 is taken out from the injection mold 29.

  Thereafter, when a surface treatment such as metal plating or electrodeposition coating is performed on the surface of the side molding 11, a surface treatment process is executed. In this surface treatment process, the side molding 11 is immersed in a treatment solution, and the surface of the side molding 11 is subjected to a surface treatment such as metal plating or electrodeposition coating. After these steps, necessary finishing or the like is appropriately performed to complete the manufacture of the side molding 11.

  When the side molding 11 manufactured in this way is attached to the vehicle body panel 16 using the mounting clip 15, the mounting clip 15 is attached to the back side of the side molding 11 in advance at the manufacturing factory of the side molding 11. Install it like this. First, the clamping part 21 of the mounting clip 15 is put on each projecting part 14 on the back surface of the side molding 11 in the mounting direction in which the engaging convex part 24 is positioned on the lower opening 25L side of the engaging hole 19, and the mounting clip 15 is pushed in and the engaging convex part 24 of the mounting clip 15 is fitted into the opening 25L on the lower side of the engaging hole 19 of the protruding part 14 to be engaged. In this way, the mounting clips 15 are held on the respective protrusions 14 of the side molding 11.

  After that, when the side molding 11 is pressed toward the vehicle body panel 16 at an automobile assembly factory or the like, the mounting clips 15 mounted on the back surface of the side molding 11 are respectively attached to the mounting holes 17 of the vehicle body panel 16 from the front side of the vehicle body panel 16. The locking claw portions 22 of the elastic locking legs 23 of the mounting clip 15 are elastically engaged with the edge of the mounting hole 17. Thus, the side molding 11 can be attached to the vehicle body panel 16 via the mounting clip 15.

  In the first embodiment described above, the engaging protrusion 24 of the mounting clip 15 is fitted into the upper opening 25U in the upper opening 25U of the engagement hole 19 of the protrusion 14 of the side molding 11. Since the engagement preventing portion 26 for preventing engagement is provided, the mounting clip 15 is pushed in the wrong direction to try to engage the engagement convex portion 24 with the opening 25U on the upper side of the engagement hole 19. In addition, the engagement preventing portion 26 can prevent the engagement convex portion 24 from being fitted into the opening 25U on the upper side of the engagement hole 19 and engaged therewith. For this reason, even if the mounting clip 15 is inserted in the wrong direction, the engaging protrusion 24 does not engage with the opening 25U on the upper side of the engaging hole 19, and conversely, the mounting clip 15 is Only when inserted in the correct direction, the engaging convex portion 24 can be engaged with and engaged with the opening 25L on the lower side of the engaging hole 19. Accordingly, it is possible to prevent the mounting clip 15 from being mounted on the side molding 11 in the wrong mounting direction (the mounting direction in which the engaging convex portion 24 is positioned on the opening 25U side above the engaging hole 19). The mounting clip 15 can always be mounted on the side molding 11 only in the correct mounting direction (the mounting direction in which the engaging convex portion 24 is positioned on the opening 25L on the lower side of the engaging hole 19).

  In addition, since the engagement blocking portion 26 is provided so as not to block (partially block) the entire engagement hole 19 of the protruding portion 14 of the side molding 11, surface treatment such as painting or plating is performed on the surface of the side molding 11. Even if the side molding 11 is immersed in the processing liquid when performing the treatment, the processing liquid that has entered the engagement hole 19 can be easily drained, and the processing liquid is accumulated in the engagement hole 19. There is also an advantage that it can be prevented. Further, even when the side molding 11 is immersed in several types of processing liquids, it is possible to prevent the processing liquid from being immersed in other processing liquids while the processing liquid is accumulated in the engagement holes 19, and different types of processing liquids Mixing can be prevented.

  Further, in the first embodiment, an injection mold 29 in which an engagement blocking portion forming cavity 36 is formed at the tip of a slide mold 33 for forming the engagement hole 19 in the protruding portion 14 of the side molding 11 is used. Since the side molding 11 is injection-molded, when the side molding 11 is molded, the engagement hole 19 and the engagement blocking portion 26 can be simultaneously molded in the protruding portion 14 of the side molding 11, and the side molding 11 Can be easily manufactured.

  Furthermore, in the first embodiment, the side molding 11 is formed by integrally forming the protruding portion 14 on the back surface of the protrusion 12 having the hollow portion 13 formed therein by the gas assist injection molding method. The difference in shrinkage characteristics (particularly the amount of shrinkage) between the portion forming the protruding portion 14 and the peripheral portion of the protruding portion 14 is unlikely to occur, and even if sink marks occur, the sink marks are hollow inside the protrusion 12 that cannot be seen from the outside. It only occurs on the inner wall, and no sink marks occur on the surface of the side molding 11. For this reason, it is possible to freely set the height dimension and the thickness dimension of the protruding portion 14 without causing sink marks on the surface of the side molding 11, and to set the mounting clip 15 stably. Can be held.

  In the first embodiment, the engagement preventing portion 26 is formed in a semi-cylindrical shape along the protruding direction of the protruding portion 14. However, the engagement blocking portion 26 intersects the protruding direction of the protruding portion 14 at a right angle. You may make it form in a semi-cylindrical shape along the direction which crosses or the direction which cross | intersects diagonally. Furthermore, the shape of the engagement prevention part 26 is not limited to a semi-cylindrical shape, For example, you may change suitably, such as a triangular prism shape and a quadrangular prism shape.

  Next, a second embodiment of the present invention will be described with reference to FIGS. However, substantially the same parts as those in the first embodiment are denoted by the same reference numerals, and the description will be simplified. The parts different from the first embodiment will be mainly described.

  In the second embodiment, as shown in FIG. 13, the engagement preventing portion 37 is provided on the outer side (side surface of the protruding portion 14) of the upper side of the engaging hole 19 of the side molding 11 (on the side surface of the protruding portion 14). The central part of the engagement hole 19 is partially left behind so as to partially remain. The engagement preventing portion 37 is formed in a triangular prism shape along the protruding direction of the protruding portion 14, and is provided from the distal end portion to the root portion of the protruding portion 14.

  Further, as shown in FIGS. 14 to 17, an engagement preventing portion 37 is fitted to the inner wall surface of the upper holding portion 21U of the mounting clip 15 (the holding portion where the engagement convex portion 24 is not provided). Possible triangular fitting grooves 38 are formed along the protruding direction of the protruding portion 14 (the mounting direction of the mounting clip 15).

  In the second embodiment described above, the engagement blocking portion 37 is provided outside the opening 25U above the engagement hole 19 of the side molding 11 (side surface of the protruding portion 14), and the upper clamping portion 21U of the mounting clip 15 is provided. Since the fitting concave groove 38 is provided on the inner wall surface of the housing, it is easy to notice the correct / incorrect direction when the mounting clip 15 is mounted by visual inspection, and the mounting clip 15 is incorrectly mounted on the side molding 11. When mounting in the direction (mounting direction in which the engaging convex portion 24 is positioned on the opening 25U side above the engaging hole 19), the lower holding portion 21L (the holding portion in which the fitting groove 38 is not formed) Since the tip of the engagement preventing portion 37 abuts on the tip of the portion), the holding portion 21 is prevented from being put on the protruding portion 14, and an error in the mounting direction can be immediately noticed. Moreover, even if the mounting clip 15 is pushed in and the protrusion 14 is forcibly covered with the clamping part 21, the engagement preventing part 37 prevents the engagement convex part 24 from engaging with the opening 25U on the upper side of the engagement hole 19. Can be prevented.

  As a result, it is possible to more reliably prevent the mounting clip 15 from being attached to the side molding 11 in the wrong mounting direction, and to always attach the mounting clip 5 to the side molding 11 in the correct mounting direction. it can.

  When the mounting clip 15 is mounted on the side molding 11 in the correct mounting direction (the mounting direction in which the engaging convex portion 24 is positioned on the lower opening 25L side of the engaging hole 19), the upper clamping portion Since the engagement preventing portion 37 is fitted in the fitting concave groove 38 of 21U, the clamping portion 21 can be smoothly covered and pushed into the protruding portion 14.

  In the second embodiment, the engagement preventing portion 37 is formed in a triangular prism shape. However, the shape of the engagement preventing portion 37 is not limited to the triangular prism shape, and may be a suitable shape such as a semi-cylindrical shape or a quadrangular prism shape. The shape of the fitting groove 38 may be changed according to the shape of the engagement preventing portion 37.

  Further, in each of the first and second embodiments, the engaging protrusion 24 is provided on the lower holding portion 21L of the mounting clip 15 and the engagement preventing portion is provided on the opening 25U side above the engaging hole 19 of the side molding 11. 26 and 37 are provided, and the mounting direction in which the engagement convex portion 24 is engaged with the lower opening 25L of the engagement hole 19 is set as the correct mounting direction. The upper projecting portion 24U is provided with an engaging convex portion 24, and the engagement preventing portions 26, 37 are provided on the lower opening 25L side of the engaging hole 19 of the side molding 11, so A configuration in which the mounting direction in which the engagement convex portion 24 is engaged with the opening 25U may be the correct mounting direction may be employed.

  In each of the first and second embodiments, the mounting clip 15 is formed of an elastic resin. However, the mounting clip 15 is formed by press molding of an elastic metal plate (for example, a spring steel plate). You may do it. Moreover, the number of the elastic latching legs 23 is not limited, and it is sufficient that two are formed in pairs in at least the width direction.

  In the first and second embodiments, the example in which the side molding 11 is attached to the vehicle body panel 16 using the mounting clip 15 has been described. However, in addition to the mounting clip 15, the side molding 11 is attached to the vehicle body using a double-sided adhesive tape. It may be attached to the panel 16. In this case, it is good to provide a double-sided adhesive tape along the longitudinal direction on the back surface of the edge in the width direction of the side molding 11 in FIG.

  In addition, the present invention is not limited to a side molding of an automobile, and a molded product is obtained by mounting a clip on the back side of a molded product such as a resin, and inserting the clip into a mounting hole of an attached body to be engaged. Needless to say, the present invention can be implemented with various modifications, such as being widely applied to those attached to the attached body via clips.

  In addition, there are expressions “up” and “down” in the description of the above embodiment, etc., but the above embodiment is described by using the upper and lower sides of the side molding attached to the side of an actual automobile for convenience. In addition, it goes without saying that the vertical direction of a molded product, a clip or the like changes depending on the mounting direction, position, location, shape, etc. of the molded product.

It is sectional drawing which shows the attachment structure of the side molding in Example 1 of this invention. It is a front view of the side molding of Example 1. It is AA sectional drawing of FIG. It is an enlarged plan view of the protrusion part of Example 1, and its peripheral part. It is an expansion side view of the protrusion part of Example 1, and its peripheral part. It is an external appearance perspective view of the mounting clip of Example 1. FIG. It is a top view of the mounting clip of Example 1. It is a front view of the mounting clip of Example 1. It is a side view of the mounting clip of Example 1. It is the figure which looked at the state which made the mounting clip engaged with the mounting hole of the vehicle body panel from the back side of the vehicle body panel. It is sectional drawing of the injection molding die of a side molding. It is an external appearance perspective view of the front-end | tip part of a slide type. It is an external appearance perspective view of the side molding of Example 2. It is an external appearance perspective view of the mounting clip of Example 2. It is a top view of the mounting clip of Example 2. It is a front view of the mounting clip of Example 2. It is a side view of the mounting clip of Example 2.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Side molding (molded article), 13 ... Hollow part, 14 ... Projection part, 15 ... Mounting clip, 16 ... Body panel (attachment body), 17 ... Mounting hole, 19 ... Engagement hole, 20 ... Bottom part, 21 DESCRIPTION OF SYMBOLS ... Clamping part, 22 ... Locking claw part, 23 ... Elastic locking leg, 24 ... Engagement convex part, 26 ... Engagement prevention part, 29 ... Injection mold, 30 ... Side molding molding cavity (main body cavity), 31 ... Cavity mold, 32 ... Core mold, 33 ... Slide mold, 36 ... Cavity for forming engagement preventing portion, 37 ... Engagement preventing portion, 38 ... Fitting groove

Claims (16)

A molded product having a predetermined shape and a clip mounted on the back side of the molded product, and the clip mounted on the back side of the molded product is engaged with the mounting hole of the attached body via the clip. A clip mounting structure of a molded product assembly that can be attached to the attached body,
The molded product is provided with a projecting portion projecting from the back surface of the molded product toward the mounting hole side, and an engagement hole penetrating the projecting portion in a direction intersecting the projecting direction of the projecting portion,
The clip includes a pair of clamping portions that clamp the protruding portion of the molded product from both sides, and one of the engagement holes of the molded product that is formed on the inner surface of one of the pair of clamping portions. Engagement protrusions that fit into and engage with the opening of the first member, and elastically deformable elastic locking legs that lock into the mounting holes of the mounted body,
An engagement preventing portion for preventing the engagement convex portion of the clip from fitting into the other opening portion or in the vicinity thereof is provided at the other opening portion of the engagement hole of the molded product. Part of the clip is provided, and a space allowing the engagement protrusion of the clip to be fitted is provided on one opening side, and the opening is provided at one opening of the engagement hole of the molded product. A clip mounting structure for a molded product assembly, wherein the clip is mounted on the molded product by engaging and engaging the engaging projections of the clip.   2. The molded article assembly according to claim 1, wherein the engagement preventing portion is provided in the other opening of the engagement hole so as to partially block the opening. 3. Clip mounting structure.   The molding according to claim 2, wherein the engagement preventing portion is formed so that a cross-sectional area of the other opening of the engagement hole is smaller than a cross-sectional area of the engagement convex portion. Product assembly clip mounting structure.   The clip mounting structure for a molded product assembly according to claim 2 or 3, wherein the engagement preventing portion is formed in a columnar shape along a protruding direction of the protruding portion.   The clip mounting structure for a molded product assembly according to claim 2 or 3, wherein the engagement preventing portion is formed in a column shape along a direction intersecting a protruding direction of the protruding portion. The engagement blocking portion is provided outside the other opening of the engagement hole and is formed in a column shape along the protruding direction of the protruding portion,
Of the pair of holding portions of the clip, the holding groove where the engagement convex portion is not provided is formed with a fitting groove having a shape that allows the engagement preventing portion to be fitted. 2. A clip mounting structure for a molded product assembly according to claim 1, wherein the clip mounting structure is a molded product assembly. A clip provided with a pair of sandwiching portions and an engaging convex portion formed on the inner surface of one of the pair of sandwiching portions and an elastically deformable elastic locking leg can be mounted on the back side. A molded product that can be attached to the attached body via the clip by locking the clip in the mounting hole of the attached body,
The molded product is provided with a projecting portion projecting from the back surface of the molded product toward the mounting hole side, and an engagement hole penetrating the projecting portion in a direction intersecting the projecting direction of the projecting portion,
An engagement preventing portion for preventing the engagement convex portion of the clip from fitting into the other opening portion or in the vicinity thereof is provided at the other opening portion of the engagement hole of the molded product. Part of the clip is provided, and a space allowing the engagement protrusion of the clip to be fitted is provided on one opening side, and the opening is provided at one opening of the engagement hole of the molded product. A molded product characterized in that the clip is attached to the molded product by engaging and engaging the engaging projections of the clip.   The molded article according to claim 7, wherein the engagement preventing portion is provided in the other opening portion of the engagement hole so as to partially block the opening portion.   The molding according to claim 8, wherein the engagement preventing portion is formed so that a cross-sectional area of the other opening of the engagement hole is smaller than a cross-sectional area of the engagement convex portion. Goods.   The molded article according to claim 8 or 9, wherein the engagement preventing portion is formed in a column shape along a protruding direction of the protruding portion.   The molded article according to claim 8 or 9, wherein the engagement preventing portion is formed in a column shape along a direction intersecting a protruding direction of the protruding portion.   The engagement preventing portion is provided outside the other opening of the engagement hole, is formed in a column shape along the protruding direction of the protruding portion, and the engagement portion of the pair of holding portions of the clip. The molded product according to claim 7, wherein the molded product is formed in a shape that can be fitted into a fitting groove formed in the holding portion on which the mating convex portion is not provided. A method for producing the molded article according to claim 7, comprising:
A pair of open / close molds formed with a body cavity for forming an outer shape including a projecting portion of the molded product when openable and closed, and slidably movable in a direction crossing the open / close direction of the open / close mold. A slide mold for forming a joint hole, and an engagement blocking portion forming cavity for forming the engagement blocking portion is formed at a tip portion of the slide mold, and the open / close die is closed to slide the slide Using an injection mold in which the main body cavity and the engagement blocking portion molding cavity are connected when the mold is advanced,
A mold closing step of closing the pair of open / close molds and moving the slide mold forward until a tip of the slide mold hits a wall surface of a portion of the open / close mold main body cavity where the projection of the molded product is formed;
The molten thermoplastic resin material is injected into the main body cavities in the pair of open / close molds and filled into both cavities, thereby forming a molded product in which the engagement holes and the engagement prevention portions are formed in the protrusions. Injection molding process,
A method of manufacturing a molded article, comprising: moving the slide mold backward and opening the pair of open / close molds to take out the molded article.   The engagement preventing portion forming cavity at the tip end portion of the slide mold is formed in a shape for forming the engagement preventing portion into a columnar shape along the protruding direction of the protruding portion. The manufacturing method of the molded article of description.   The engagement blocking portion forming cavity at the tip of the slide mold is formed in a shape that forms the engagement blocking portion into a columnar shape along a direction intersecting the protruding direction of the protruding portion. The manufacturing method of the molded article of Claim 13.   The method for manufacturing a molded product according to any one of claims 13 to 15, wherein a surface treatment step of performing a predetermined surface treatment on the surface of the molded product is performed after the extraction step.

Images