JP4853627B2 - Automobile shroud support structure - Google Patents

Description

  The present invention relates to a shroud support structure that supports a shroud at the front of a vehicle body.

  Generally, in a car, a shroud for attaching a radiator and a condenser is provided, and this shroud is formed in a round shape (rectangular frame shape) having an upper portion, a lower portion, and left and right side portions, and is disposed near the rear side of the front bumper. It is supported and attached to the front of the vehicle body. Left and right front side frames are provided at the front of the vehicle body. Recently, bumper reinforcements extending in the vehicle width direction are connected to the front end portions of these front side frames via left and right crash cans that can absorb collision energy. The structure is mainstream.

  As a structure for supporting the shroud on the front portion of the vehicle body, Patent Document 1 includes a pair of left and right vehicle body fastening portions, and these vehicle body fastening portions are integrated with the left and right side portions of the shroud. In particular, in the second embodiment, the vehicle body fastening portion is configured by a portion obtained by extending the rear end flange portion of the crash can connected to the front end portion of the front side frame. The extended portion of the rear end flange portion and the side portion of the shroud are arranged in the front-rear direction and fastened with bolts from the front-rear direction.

  Patent Document 2 discloses a technique in which a pair of left and right stays are provided on bumper reinforcements connected to front end portions of left and right front side frames, and left and right side portions of a shroud are fastened to these stays with screws from the front and rear directions. It is disclosed. By the way, as mentioned above, a radiator and a condenser are attached to the shroud, and their total weight becomes very large. Therefore, it is necessary to securely support and attach the shroud to the front part of the vehicle body. Support members such as a plurality of brackets for connecting and supporting the vehicle to the front portion of the vehicle body are separately required.

JP 2002-240744 A JP-A-7-172345

  As in Patent Document 1, when the shroud is at a certain rear position, the flange at the rear end of the crush can is extended inward, and the extension supports the front surface of the side portion of the shroud. A side stay that extends outward and rearward is provided at the upper part of the side surface of the side part, and the side stay is supported by a vehicle body side member such as an apron panel, thereby supporting each side part of the shroud at different places. Is possible.

  On the other hand, when the shroud is arranged in front of the bumper reinforcement as in Patent Document 2, the front surface of the side portion of the shroud can be supported by the bumper reinforcement, but the side of the shroud Since the distance from the part to the vehicle body side member such as the apron panel becomes longer, the side stay as described in Patent Document 1 is provided on the side surface of the side part of the shroud to secure the support rigidity and then the vehicle side member. It will be difficult to support. In particular, in a vehicle in which the headlamps are elongated in the front-rear direction, the front end of the apron panel is at a considerably rear position, so that the above problem becomes more prominent.

  An object of the present invention is to support a front surface portion of a side portion of a shroud by a bumper reinforcement in a vehicle in which a shroud is arranged near a rear side of a bumper reinforcement, and left and right crash cans on left and right front side frames. By effectively using the left and right flange members provided for connection, and by supporting a predetermined portion other than the front portion of the side portion of the shroud on the extended portion of the flange member, the support rigidity of the shroud is reliably increased. An automobile shroud support structure that can securely attach the shroud to the front part of the vehicle body, suppress an increase in the number of parts due to the installation of the shroud, and improve the assembly of the shroud to the front part of the vehicle body. Is to provide.

  The shroud support structure for an automobile according to claim 1 includes left and right front side frames, left and right crash cans connected to the front side frames via left and right flange members and extending forward from the front side frames, and the crash cans. In a vehicle shroud support structure for supporting a rod-shaped shroud having an upper portion, a lower portion, and left and right side portions on a vehicle body front portion having a bumper reinforcement connected to the front end portion of the vehicle body and extending in the vehicle width direction. The left and right flange members are each provided with an extension portion, and the bumper reinforcement includes a first support portion for supporting a front portion of a side portion corresponding to the shroud, and an extension portion of the flange member, and the shroud A second support part for supporting a predetermined part other than the front part of the corresponding side part; Characterized by comprising.

  In the front part of the vehicle body, left and right front side frames, left and right crash cans and bumper reinforcement are provided, and left and right crash cans are connected to the left and right front side frames via left and right flange members, extending forward, A bumper reinforcement is connected to the front end of these crash cans and extends in the vehicle width direction. The shroud is configured in a round shape with an upper part, a lower part, and left and right side parts, and a radiator and a condenser can be attached.In particular, this shroud is arranged near the rear side of the bumper reinforcement and the front part of the vehicle body The shroud support structure of the present invention is effective when it is attached to the support.

  In this shroud support structure, the left and right flange members are provided with extending portions, and the front surface portions of the corresponding side portions of the shroud are supported by the first support portions of the bumper reinforcement, and from the extending portions of the flange members. A predetermined portion other than the front portion of the corresponding side portion of the shroud is supported by the second support portion, and the shroud is attached to the front portion of the vehicle body. The crash can is securely joined to the front end of the front side frame via a flange member, and this flange member is advantageously used to ensure that two different locations on each side of the shroud are connected to the bumper reinforcement and the flange member. The support strength of the shroud is increased and the shroud is securely attached to the front portion of the vehicle body.

Here, the following configuration can be adopted in the invention of claim 1.
The predetermined portion has a protrusion provided to protrude sideways on the side portion of the shroud, and the second support portion has a horizontal support surface extending forward or rearward with respect to the flange member ( Claim 2). The front portion is fastened to the first support portion from the front-rear direction, and the predetermined portion is fastened to the second support portion from the up-down direction. The second support part is located above the first support part (Claim 4). The extending portion of the flange member is provided at the upper end portion of the flange member.

  The predetermined portion is configured to be released from the second support portion when a rearward load greater than or equal to a predetermined value acts on the shroud. The bumper reinforcement is provided with a reinforcing member that reinforces a portion of the bumper reinforcement to which the crash can is connected, and the reinforcing member is a pair of vertical extending portions that are vertically separated by a predetermined distance, A pair of vertically extending portions constituting the first support portion is provided (claim 7). The reinforcing member is joined to an upper wall and a lower wall of a bumper reinforcement.

  A front end portion of the crash can is directly coupled to the bumper reinforcement, and a bracket is provided so as to be adjacent to the crash can. A pair of vertically extending portions constituting the first support portion is provided (claim 9). A projecting piece projecting forward is formed at one end portion in the vehicle width direction of the bracket, and a restricting portion is provided on a side portion of the shroud to engage the projecting piece and restrict movement of the shroud in the vehicle width direction. 10). A locked portion that protrudes forward is formed in the upper portion of the first portion of the shroud, and the locked portion is configured to be lockable by the upper end portion of the upper vertical extending portion (claim 11). A positioning hole is formed in the second support portion in the vertical direction, and a downward projecting positioning pin that engages with the positioning hole is provided at the predetermined portion.

  According to the shroud support structure for an automobile of claim 1, the left and right crash cans are securely connected to the left and right front side frames via the left and right flange members, and the shroud corresponds to the first support portion of the bumper reinforcement. The flange member is effectively used to support the front portion of the side portion to be provided, and an extension portion is provided on the flange member, and the front surface of the side portion corresponding to the shroud is provided on the second support portion including the extension portion. A predetermined part other than the part can be supported. In other words, when the shroud is placed near the rear side of the bumper reinforcement, two different locations on each side of the shroud are securely supported by the bumper reinforcement and the flange member without increasing the number of parts. The support rigidity of the shroud is increased, and the shroud can be securely attached to the front portion of the vehicle body.

  According to the shroud support structure for an automobile of claim 2, the predetermined portion has a protruding portion provided so as to protrude sideways on the side portion of the shroud, and the second support portion is connected to the flange member. Since it has a horizontal support surface that extends forward or rearward, when the shroud is assembled to the front part of the vehicle body, the projecting part can be temporarily placed on the horizontal support surface, so that the assembly of the shroud to the front part of the vehicle body can be improved. The predetermined portion can be securely attached to the second support portion without interfering with the flange member, and can be supported in a state where the predetermined portion is placed on the second support portion, so that the radiator and the condenser including the shroud The reliability of supporting a large weight is increased, and the support rigidity of the shroud is reliably increased.

  According to the shroud support structure for an automobile of claim 3, the front portion is fastened to the first support portion from the front-rear direction, and the predetermined portion is fastened to the second support portion from the vertical direction. The support rigidity of the shroud can be increased with respect to the force from the direction.

  According to the automobile shroud support structure of the fourth aspect, since the second support portion is located above the first support portion, the shroud can be prevented from falling in the front-rear direction in the event of a vehicle collision. By appropriately increasing the vertical distance between the parts, the above-described fall-preventing effect can be enhanced without providing support for mounting the shroud to the front part of the vehicle body.

  According to the automobile shroud support structure of the fifth aspect, since the extension portion of the flange member is provided at the upper end portion of the flange member, the extension length of the extension portion can be suppressed, and the weight of the flange member is increased. It is possible to keep the first and second support portions up and down apart.

  According to the vehicle shroud support structure of the sixth aspect, the predetermined portion is configured to be released from the second support portion when a predetermined backward load is applied to the shroud. The crash can deforms when the bumper reinforcement moves backward, but by releasing the predetermined part from the second support part, the bumper reinforcement is allowed to move backward to prevent damage to the shroud as much as possible. In addition, the energy absorbing function due to the deformation of the crash can can be surely exhibited.

  According to the automobile shroud support structure of claim 7, the bumper reinforcement is provided with a reinforcing member that reinforces a portion of the bumper reinforcement to which the crash can is connected, and the reinforcing member is vertically separated by a predetermined distance. Since the pair of vertical extending portions that constitute the first support portion are provided, the support rigidity for supporting the front portion of the shroud on the first support portion of the bumper reinforcement is provided. The rigidity of the bumper reinforcement and the bonding strength between the bumper reinforcement and the crash can can be increased.

  According to the shroud support structure for an automobile of claim 8, since the reinforcing member is joined to the upper wall and the lower wall of the bumper reinforcement, the reinforcing member is securely attached to the bumper reinforcement and the strength of the bumper reinforcement is increased.・ Rigidity can be reliably increased.

  According to the shroud support structure for an automobile of claim 9, the front end portion of the crash can is directly coupled to the bumper reinforcement, and the bracket is provided adjacent to the crash can, and the bracket is vertically separated by a predetermined distance. Since the pair of vertical extending portions that constitute the first support portion is provided, the connection structure between the crash can and the bumper reinforcement can be simplified, and the bumper reinforcement The rigidity of the ment can be increased, and the crash can can be easily crushed at the time of a vehicle collision so that the intended energy absorption function can be exhibited.

  According to the shroud support structure for an automobile of claim 10, a projecting piece projecting forward is formed at one end of the bracket in the vehicle width direction, and the projecting piece is engaged with the projecting piece on the side portion of the shroud. Since a restricting part that restricts movement is provided, when the shroud moves in the vehicle width direction at the time of a vehicle collision, the protruding piece engages with the restricting part to restrict the movement of the shroud in the vehicle width direction, and no shroud is required It can be expected to prevent the crash can from colliding with the crash can and preventing the energy absorption function of the crash can from being lowered.

  According to the shroud support structure for an automobile of claim 11, a locked portion protruding forward is formed on the upper portion of the first portion of the shroud, and the locked portion is formed at the upper end portion of the upper vertical extension portion. Since it is configured to be locked, when the predetermined portion is temporarily placed on the second support portion when the shroud is assembled to the front portion of the vehicle body, the locked portion is held at the upper end portion of the upper vertical extension portion. Since it can be locked and the shroud can be prevented from falling forward, the assembling property of the shroud to the front portion of the vehicle body can be improved.

  According to the automobile shroud support structure of claim 12, since the positioning hole is formed in the vertical direction in the second support portion and the downward projecting positioning pin that engages with the positioning hole is provided in the predetermined portion, the shroud When the shroud is attached to the front portion of the vehicle body, the positioning pin can be engaged with the positioning hole and the shroud can be positioned with the predetermined portion temporarily placed on the second support portion. Assembling can be improved.

  The shroud support structure for an automobile of the present invention includes left and right front side frames, left and right crash cans connected to the front side frames via left and right flange members and extending forward from the front side frames, and It is a structure that supports a lower shroud having an upper portion, a lower portion, and left and right side portions on a vehicle body front portion having a bumper reinforcement extending in the vehicle width direction connected to a front end portion, The flange member is provided with an extension portion, and the bumper reinforcement supports the front portion of the side portion corresponding to the shroud, and the flange member extension portion includes the side portion corresponding to the shroud. And a second support part for supporting a predetermined part other than the front part.

  As shown in FIGS. 1 and 2, a front body frame 1 of an automobile has a pair of left and right front side frames 2 and 2 extending in the front-rear direction, and a pair of left and right front ends of the front side frames 2 and 2. A pair of left and right crash cans 4, 4 connected to each other through the flange members 3, 3 and extending forward from the front side frames 2, 2, and a vehicle width direction connected to the front ends of these crash cans 4, 4 A bumper reinforcement 5 extending in a straight line is provided, and a shroud 6 made of a synthetic resin having a round shape (rectangular frame shape) is supported and attached to the front portion 1 of the vehicle body.

  The pair of front side frames 2, 2 extend in the front-rear direction and are disposed at a predetermined interval in the vehicle width direction. A flange 2 a is joined (welded) to the front end of the front side frame 2, and the rear end of the crash can 4 The flange member 3 is joined (welded) to the portion, the flange 2a and the flange member 3 are joined by a bolt / nut 3a (see FIGS. 1 and 3), and the bumper reinforcement 5 is a reinforcing member at the front end of the crash can 4 12 are connected to each other. The shroud 6 is a vertical posture having a round shape when viewed from the front, and is disposed near the rear side of the bumper reinforcement 5 (a front end portion of the engine room) between the pair of crash cans 4 and 4.

  As shown in FIGS. 1 to 7, the flange member 3 is formed in a vertical plate shape projecting up and down and left and right with respect to the rear end portion of the crash can 4, and each flange member 3 is provided with a second support portion 45 described later. It has been. The crash can 4 is formed in a rectangular tube shape, and at the time of a vehicle collision, it absorbs the collision energy by compressing and deforming by a collision load applied from the front via the bumper reinforcement 5 to achieve the intended energy absorption function. It is configured to obtain the size and shape.

  The bumper reinforcement 5 has a longer left and right length than the distance between the pair of front side frames 2 and 2, and its left and right ends project slightly to the left and right sides of the pair of front side frames 2 and 2. It is provided in the state. The bumper reinforcement 5 has a base plate 10 and a closing plate 11 that are long in the vehicle width direction. The base plate 10 and the closing plate 11 are joined to form a closed cross section, and the base plate 10 is connected to the front end of the crash can 4. It is connected and supported by the part. Although not shown, an impact absorber made of foamed resin or the like may be provided on the front side of the closing plate 11.

  The base plate 10 is formed in a U-shaped longitudinal section having a rear wall 10a, an upper wall 10b, and a lower wall 10c so that the front side is open, and the closing plate 11 is formed at the front ends of the upper wall 10b and the lower wall 10c. The upper and lower edges are joined. The bumper reinforcement 5 is provided with a pair of reinforcing members 12 and 12 that reinforce a portion of the base plate 10 to which the pair of crash cans 4 and 4 are connected. One support portion 35 is provided.

  The reinforcing member 12 includes a reinforcing main portion 13 having a U-shaped longitudinal section with an open front, which includes a rear plate portion 13a, an upper plate portion 13b, and a lower plate portion 13c. The portion 13b and the lower plate portion 13c are joined (welded) to the upper wall 10b and the lower wall 10c of the base plate 10, and the rear plate portion 13a of the reinforcing main portion 13 is joined (welded) to the rear wall 10a of the base plate 10. Has been. The front end portion of the crash can 4 is joined to the reinforcing main portion 13.

  As shown in FIGS. 1 and 8, the shroud 6 has an upper portion 20, a lower portion 21, and a pair of left and right side portions 22, 22, and a radiator and a condenser (not shown) are attached to the shroud 6. The first portions 30 supported by the first support portions 35 of the corresponding reinforcing members 12 of the bumper reinforcement 5 and the second support portions 45 of the corresponding flange members 3 are supported by the respective side portions 22 of the bumper reinforcement 5. Two sites 40 are provided.

A shroud support structure for supporting the shroud 6 on the vehicle body front portion 1 will be described in detail.
As shown in FIGS. 1 to 8, in this shroud support structure, extending portions 46, 46 are respectively provided in the pair of left and right flange members 3, 3, and each first support portion 35 of the bumper reinforcement 5 is provided on each of the first support portions 35. The first portion 30 consisting of the front surface portion of the side portion 22 corresponding to the shroud 6 is supported, and the second support portion 45 consisting of the extending portion 46 of each flange member 3 is supported by the second portion 45 of the side portion 22 corresponding to the shroud 6. A second portion 40 corresponding to a predetermined portion other than the one portion 30 is supported.

  The first portion 30 is provided at the center in the vertical direction of the side portion 22 of the shroud 6, has a vertical length that is approximately twice the vertical length of the bumper reinforcement 5, and the shroud 6 is attached to the vehicle body front portion 1. In this state, the bumper reinforcement 5 projects to both the upper and lower sides, and a vertical support surface 31 that is vertically long and forward is formed in the first portion 30, and a pair of upper and lower bolts connected to the vertical support surface 31. A hole 32 is formed. A horizontal hook-like locked portion 30 a that protrudes forward is formed on the upper portion of the first portion 30 of the side portion 22 of the shroud 6.

  On the other hand, the first support portion 35 is composed of a pair of upper and lower vertical extending portions 36, 36 provided on the reinforcing member 12 and spaced apart from each other by a predetermined distance, and a bolt hole 37 is formed in each vertical extending portion 36. ing. The reinforcing member 12 is integrally formed with a protruding portion 38 that extends from the reinforcing main portion 13 toward the center of the vehicle body, and upper and lower side portions of the protruding portion 38 are formed as a pair of vertically extending portions 36 and 36. The upper portion of the upper vertical extension 36 is configured so that the locked portion 30a of the shroud 6 can be locked from the lower side. The overhang portion 38 is reinforced by bending the vehicle body center side end portion forward.

  The vertical support surface 31 of the first portion 30 is in surface contact with the rear surfaces of a pair of upper and lower vertical extension portions 36, 36 of the first support portion 35, and these bolt holes 32, 32, 37, 37 are aligned. Thus, a pair of upper and lower bolts 39 are screwed into the bolt holes 32, 32, 37, 37 from the front side, and the first portion 30 is fastened to the first support portion 35 from the front-rear direction.

  The second portion 40 has a protruding portion 41 that is provided at the upper end portion of the side portion 22 of the shroud 6 and is located above the first portion 30 and protrudes to the side opposite to the vehicle body center side. The lower surface of the protruding portion 41 is formed in a horizontal plane, and the protruding portion 41 is formed with a hook portion 42 that forms a notched slit 42a from the front side. A reinforcing wall portion 41a having a triangular shape in front view connected to the rear end portion of the protruding portion 41 and the side portion 22 of the portion extending upward from the inner end of the rear end portion is provided, and the protruding portion 41 is formed by the reinforcing wall portion 41a. It is reinforced.

  On the other hand, the 2nd support part 45 (extension part 46) is provided in the upper end part of the flange member 3, is located above the 1st support part 35, and has the protrusion support part 47 which protrudes ahead. A horizontal support surface 48 extending forward with respect to the main body of the flange member 3 is formed on the upper surface of the projecting support portion 47, and a bolt hole 49 connected to the horizontal support surface 48 is formed.

  The lower surface of the projecting portion 41 of the second part 40 is in surface contact with the horizontal support surface 48 of the second support portion 45, and the projecting portion 41 is placed and supported on the projecting support portion 47, and the slits 42 a of these hook portions 42 and With the bolt holes 49 aligned with each other, the bolts 50 are inserted into the slits 42a and the bolt holes 49 from the upper side, and are screwed into the nuts 51 welded in advance to the lower surface of the protruding support part 47 of the second support part 45. The second portion 40 is fastened to the second support portion 45 from the vertical direction.

  The slit 42 a of the hook portion 42 is formed in a notch shape from the front side, and the hook portion 42 is sandwiched by the nut 51 via the head of the bolt 50 and the protruding support portion 47, so that the shroud 6 When a rearward load of a predetermined level or more is applied via the bumper reinforcement 5, the hook portion 42 is detached rearward from the bolt 50 so that the second portion 40 is released from the second support portion 45. It is configured.

  Here, when the shroud 6 is assembled to the vehicle body front portion 1, the shroud 6 is lowered into the engine room from the upper side of the engine room with a radiator or a condenser attached to the shroud 6 or before attaching the radiator or the condenser. The protrusions 41 of the pair of left and right second portions 40 of the shroud 6 are placed on the horizontal support surface 48 of the protrusion support 47 of the second support 45 of the pair of left and right flange members 3 and temporarily placed. .

  At this time, the pair of left and right locked portions 30a of the shroud 6 are locked by the upper ends of the vertical extending portions 36 above the pair of left and right first support portions 35, and the shroud 6 is held in a horizontal posture. In this state, the shroud 6 is moved back and forth and left and right as necessary to accurately position the shroud 6 with respect to the vehicle body front portion 1, and the first portion 30 is fastened to the first support portion 35 as described above. The second part 40 is fastened to and supported by the second support part 45 and, if necessary, the other parts are appropriately fixed to the vehicle body front part 1 and the shroud 6 is attached to the vehicle body front part 1.

The shroud support structure described above has the following effects.
The left and right crash cans 4 are securely connected to the left and right front side frames 2 via the left and right flange members 3, and the first support portions 35 of the bumper reinforcement 5 are connected to the first side portions 22 of the shroud 6. The flange member 3 is effectively used by supporting the portion 30 and the flange member 3 is provided with an extension portion 46, and the side portion corresponding to the shroud 6 is formed on the second support portion 45 including the extension portion 46. The second portions 40 other than the 22 first portions 30 can be supported.

  That is, when the shroud 6 is disposed near the rear side of the bumper reinforcement 5, the bumper reinforcement 5 and the flange member 3 are arranged at two different locations on each side portion 22 of the shroud 6 without increasing the number of parts. Thus, the support rigidity of the shroud 6 is increased by reliably supporting the shroud 6 so that the shroud 6 can be securely attached to the vehicle body front portion 1.

  The second portion 40 has a protruding portion 41 provided so as to protrude sideways on the side portion 22 of the shroud 6, and the second support portion 45 has a horizontal support surface 38 extending forward with respect to the flange member 3. In addition, a locked portion 30 a that protrudes forward is formed on the upper portion of the first portion 30 of the shroud 6, and the locked portion 30 a is an upper end portion of the vertically extending portion 36 on the upper side of the reinforcing member 12. Therefore, when the shroud 6 is assembled to the vehicle body front portion 1, the projecting portion 41 can be temporarily placed on the horizontal support surface 48. At that time, the upper end portion of the vertical extension portion 36 is locked. Since the portion 30a is locked and the shroud 6 can be prevented from falling forward, the assembling property of the shroud 6 to the vehicle body front portion 1 can be improved, and the second portion 40 can be supported without interfering with the flange member 3. It is securely attached to the part 45, and the second part is attached to the second support part 45. Because it can support the 0 state of mounting, reliability to support the large weight of the radiator and condenser including a shroud 6 is high, the support rigidity of the shroud 6 is reliably increased.

  Since the first part 30 is fastened to the first support part 35 from the front-rear direction and the second part 40 is fastened to the second support part 45 from the vertical direction, the force from various directions acting on the shroud 6 is The support rigidity of the shroud 6 can be increased. Since the 2nd support part 45 is located above the 1st support part 35, it can prevent that the shroud 6 falls down in the front-back direction at the time of a vehicle collision, and the vertical space | interval between the 1st, 2nd support parts 35 and 45 is moderate. By enlarging it, the above-mentioned fall prevention effect can be enhanced without providing support for mounting the shroud 6 to the vehicle body front portion 1.

  Since the extending portion 46 of the flange member 3 is provided at the upper end of the flange member 3, the extending length of the extending portion 46 can be suppressed, and an increase in the weight of the flange member 3 can be suppressed. 2 Support parts 35 and 45 can be separated in the up-and-down direction. Since the second portion 40 is configured so as to be released from the second support portion 45 when a predetermined backward load is applied to the shroud 6, the bumper reinforcement 5 is moved backward when the vehicle collides. Although the crash can 4 is deformed, by releasing the second portion 40 from the second support portion 45, the bumper reinforcement 5 is allowed to retreat, and damage to the shroud 6 and the like is prevented as much as possible. The energy absorption function due to the deformation of can be reliably exhibited.

  The bumper reinforcement 5 is provided with a reinforcing member 12 that reinforces a portion of the bumper reinforcement 5 to which the crash can 4 is connected, and a pair of vertical extending portions spaced apart from each other by a predetermined distance on the reinforcing member 12. Since the pair of vertical extending portions 36 and 36 constituting the first support portion 35 are provided, the first portion 30 of the shroud 6 is supported by the first support portion 35 of the bumper reinforcement 5. Thus, the rigidity of the supporting bumper reinforcement 5 and the bonding strength between the bumper reinforcement 5 and the crash can 4 can be increased. Since the reinforcing member 12 is joined to the upper wall 10b and the lower wall 10c of the base plate 10 of the bumper reinforcement 5, the reinforcing member 12 is securely attached to the bumper reinforcement 5, so that the strength and rigidity of the bumper reinforcement 5 are increased. Can be reliably increased.

  The shroud support structure of the second embodiment is obtained by partially changing the vehicle body front portion 1 including the shroud support structure of the first embodiment. Therefore, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  As shown in FIGS. 9 to 14, in the vehicle body front portion 1A of the second embodiment, a flange member 3A is joined (welded) to the rear end portion of the crash can 4A, and the flange 2a and the flange member 3A are bolts and nuts 3Aa. Are combined. The front end portion of the crash can 4A is directly joined to the bumper reinforcement 5, so that an extension portion 4Aa extending forward is formed at the front end portions of the upper and lower walls of the crash can 4A, and the upper and lower extension portions 4Aa are formed as bumpers. It is welded to the upper wall 10b and the lower wall 10c of the base plate 10 of the reinforcement 5.

  The bumper reinforcement 5 is provided with a pair of brackets 12A and 12A so as to be adjacent to the pair of crash cans 4A and 4A from the center side in the vehicle width direction, and a first support portion 35A described later is provided on each bracket 12A. Is provided. This bracket 12A has a mounting portion 13A having a U-shaped longitudinal section with an open front, which includes a rear plate portion 13Aa, an upper plate portion 13Ab, and a lower plate portion 13Ac, and an upper plate portion 13Ab of the mounting portion 13A. The lower plate portion 13Ac is joined (welded) to the upper wall 10b and the lower wall 10c of the base plate 10, and the rear plate portion 13Aa of the mounting portion 13A is joined (welded) to the rear wall 10a of the base plate 10. .

  The flange member 3A is formed in a vertical plate shape that protrudes vertically and horizontally with respect to the rear end portion of the crash can 4A, and each flange member 3A is provided with a second support portion 45A described later. The shroud 6 </ b> A has a structure having an upper portion 20, a lower portion 21, and a pair of side portions 22, 22 that are substantially the same as the shroud 6 of the first embodiment, and the bumper reinforcement 5 corresponds to each side portion 22. A first part 30A supported by the first support part 35A of the bracket 12A and a second part 40A supported by the second support part 45A of the corresponding flange member 3A are provided.

  In the shroud support structure that supports the shroud 6A on the vehicle body front portion 1A, the pair of left and right flange members 3A, 3A are provided with extending portions 46A, 46A, respectively, and the first support portions 35A of the bumper reinforcement 5 are provided on the first support portions 35A. The first portion 30A consisting of the front surface portion of the corresponding side portion 22 of the shroud 6A is supported, and the second support portion 45A consisting of the extending portion 46A of each flange member 3A is supported by the second portion of the side portion 22 corresponding to the shroud 6A. A second part 40A corresponding to a predetermined part other than one part 30A is supported.

  The first part 30A is formed with a vertical support surface 31 and a bolt hole 32 similar to the first part 30 of the first embodiment, and protrudes forward in the upper part of the first part 30A of the side portion 22 of the shroud 6A. A horizontal hook-shaped locked portion 30Aa is formed, and a regulating portion 30Ab protruding forward is formed at the center side end portion of the first portion 30A in the vehicle width direction.

  On the other hand, the first support portion 35A is composed of a pair of upper and lower vertical extension portions 36A and 36A provided on the bracket 12A and spaced apart from each other by a predetermined distance, and a bolt hole 37 is formed in each vertical extension portion 36A. Yes. The bracket 12A is integrally formed with a projecting portion 38A that projects from the mounting portion 13A to the vehicle body center side, and upper and lower side portions of the projecting portion 38A are formed as a pair of vertical extending portions 36A and 36A. At the upper end of the vertical extending portion 36A, the locked portion 30Aa of the shroud 6A can be locked from below.

  The overhanging portion 38A is reinforced by bending the vehicle body center side end portion forward, and the restricting portion 30Ab of the side portion 22 of the shroud 6A is engaged with the protruding piece 38Aa formed by the bent portion. In combination, the movement of the shroud 6A in the vehicle width direction is restricted. The vertical support surface 31 of the first part 30A is in surface contact with the rear surfaces of a pair of upper and lower vertical extension portions 36A, 36A of the first support portion 35A, and these bolt holes 32, 32, 37, 37 are aligned. Thus, a pair of upper and lower bolts 39 are screwed into the bolt holes 32, 32, 37, 37 from the front side, and the first portion 30A is fastened to the first support portion 35A from the front-rear direction.

  The second portion 40A has a protruding portion 41, a reinforcing wall portion 41a, a hook 42, and a slit 42a similar to the second portion 40 of the first embodiment, and further in the vehicle width direction of the protruding portion 41 than the slit 42a. It has a downwardly projecting positioning pin 60 provided on the outer portion. Here, the positioning pin 60 of the right second portion 40A is formed to have a larger diameter than the positioning pin 60 of the left second portion 40A.

  On the other hand, the second support portion 45A (extending portion 46A) is provided at the upper end portion of the flange member 3A and is located above the first support portion 35A, and forwards from a substantially full width portion of the upper end portion of the flange member 3A. It has a protruding support portion 47A that protrudes. The projecting support portion 47A has a horizontal support surface 48A formed on the upper surface thereof, a bolt hole 49 connected to the horizontal support surface 48A, and a positioning hole 61 through which the positioning pin 60 of the second portion 40A engages vertically. It is formed in a shape.

  The lower surface of the protrusion 41 of the second part 40A is in surface contact with the horizontal support surface 48A of the second support 45A, the protrusion 41 is placed and supported on the protrusion support 47A, and these positioning pins 60 are positioned in the positioning holes 61. In the state where the slit 42a of the hook portion 42 and the bolt hole 49 are aligned with each other, the bolt 50 is inserted into the slit 42a and the bolt hole 49 from above, and the protrusion support portion 47A of the second support portion 45A is inserted. The second portion 40A is fastened to the second support portion 45A from above and below by being screwed into a nut 51 previously welded to the lower surface.

  Here, when assembling the shroud 6A to the vehicle body front portion 1A, the shroud 6A is lowered from the upper side of the engine room into the engine room with a radiator or a condenser attached to the shroud 6A or before attaching the radiator or the condenser. The protrusions 41 of the pair of left and right second portions 40A of the shroud 6A are placed and temporarily placed on the horizontal support surface 48A of the protrusion support 47A of the second support 45A of the pair of left and right flange members 3A. .

  At this time, the positioning pins 60 of the pair of left and right second portions 40A engage with the positioning holes 61 of the pair of left and right second support portions 45A, and the shroud 6 is positioned. Here, since the right-side large-diameter positioning pin 60 is closely engaged with the right-side positioning hole 61 and the left-side small-diameter positioning pin 60 is loosely engaged with the left-side positioning hole 61, a manufacturing error occurs. The assembly error can be absorbed and the shroud 6A can be positioned.

  Further, the pair of left and right locked portions 30Aa of the shroud 6A are locked by the upper end portions of the upper vertical extending portions 36A of the pair of left and right first support portions 35A, and the shroud 6A is held in a horizontal posture. In this state, as described above, the first part 30A is fastened and supported by the first support part 35A, and the second part 40A is fastened and supported by the second support part 45A. The part is appropriately fixed to the vehicle body front portion 1A, and the shroud 6A is attached to the vehicle body front portion 1A.

  According to the above-described shroud support structure, the front end portion of the crash can 4A is directly coupled to the bumper reinforcement 5, and the bracket 12A is provided adjacent to the crash can 4A. Since the pair of vertical extending portions 36A that constitute the first support portion 35A is provided with a pair of vertical extending portions 36A that are separated by a distance, the connection structure between the crash can 4A and the bumper reinforcement 5 is simplified. Therefore, the rigidity of the bumper reinforcement 5 can be increased, and the crash can 4A can be easily crushed at the time of a vehicle collision, so that an intended energy absorption function can be exhibited.

  A projecting piece 38Aa projecting forward is formed at one end in the vehicle width direction of the bracket 12A, and a restricting portion 30Ab that engages the projecting piece 38Aa on the side portion 22 of the shroud 6A to restrict movement of the shroud 6A in the vehicle width direction. Therefore, when the shroud 6A moves in the vehicle width direction at the time of a vehicle collision, the protruding piece 38Aa engages the restricting portion 30Ab to restrict the movement of the shroud 6A in the vehicle width direction, and the shroud 6A crashes unnecessarily. It is possible to prevent the crash can 4A from colliding with the can 4A and preventing the energy absorption function of the crash can 4A from being lowered.

  Since the positioning hole 61 is formed in the second support portion 45A in the vertical direction and the downward projecting positioning pin 60 that engages with the positioning hole 61 is provided in the second portion 40A, the shroud 6A is assembled to the vehicle body front portion 1A. When the second portion 40A is temporarily placed on the second support 45A, the positioning pin 60 can be engaged with the positioning hole 61 to position the shroud 6A. Improves attachment. The other operations and effects are basically the same as those of the first embodiment.

  The extending portions 46 and 46A of the flange members 3 and 3A may be provided in a portion (for example, the flange 2b) other than the upper end portion of the flange members 3 and 3A, and the horizontal support surfaces 48 and 48A are the flange members 3. , 3A may be configured to extend rearward. In addition, various modifications can be added without departing from the spirit of the present invention, and the present invention can be applied to a structure in which a shroud is supported on the front part of various automobile bodies.

1 is a perspective view of a vehicle body front portion and a shroud according to a first embodiment. It is the II-II sectional view taken on the line of FIG. It is an enlarged view of the principal part of FIG. It is a perspective view from the vehicle body front part and the front side of the principal part of a shroud support structure. It is a perspective view from the rear side of the principal part of a vehicle body front part and a shroud support structure. It is the VI-VI sectional view taken on the line of FIG. It is the VII-VII sectional view taken on the line of FIG. It is a perspective view of a shroud. It is a cross-sectional view of the vehicle body front part of Example 2 and the principal part of a shroud support structure. It is a perspective view from the rear side of the principal part of a vehicle body front part and a shroud support structure. It is a perspective view from the back of the upper left half part of a shroud. It is a perspective view from the back of the upper right half part of a shroud. It is a longitudinal cross-sectional view of the left main part of a shroud support structure. It is a longitudinal cross-sectional view of the right main part of a shroud support structure.

Explanation of symbols

1, 1A Car body front part 2 Front side frame 3, 3A Flange member 4, 4A Crash can 5 Bumper reinforcement 6, 6A Shroud 10b Upper wall 10c Lower wall 12 Reinforcing member 12A Bracket 20 Upper part 21 Lower part 22 Side part 30 , 30A First part 30Ab Restriction part 35, 35A First support part 36, 36A Vertical extension part 38Aa Projection piece 40, 40A Second part 41 Projection part 45, 45A Second support part 46, 46A Extension part 48, 48A Horizontal support surface 60 Positioning pin 61 Positioning hole

Claims (12)

Left and right front side frames, left and right crash cans connected to the front side frames via left and right flange members and extending forward from the front side frames, and connected to the front end of the crash cans in the vehicle width direction In a vehicle shroud support structure that supports a lower shroud having an upper portion, a lower portion, and left and right side portions on a vehicle body front portion having an extended bumper reinforcement,
Each of the left and right flange members is provided with an extending portion,
A first support portion for supporting a front portion of a side portion of the shroud corresponding to the bumper reinforcement;
A second support portion that includes an extending portion of the flange member and supports a predetermined portion other than the front portion of the side portion corresponding to the shroud;
An automobile shroud support structure characterized by comprising:   The predetermined portion has a protrusion provided so as to protrude laterally on the side portion of the shroud, and the second support portion has a horizontal support surface extending forward or backward with respect to the flange member. The shroud support structure for an automobile according to claim 1.   The shroud support structure for an automobile according to claim 2, wherein the front portion is fastened to the first support portion from the front-rear direction, and the predetermined portion is fastened to the second support portion from the up-down direction.   The shroud support structure for an automobile according to any one of claims 1 to 3, wherein the second support part is located above the first support part.   5. The automobile shroud support structure according to claim 4, wherein the extending portion of the flange member is provided at an upper end portion of the flange member.   2. The shroud support structure for an automobile according to claim 1, wherein the predetermined portion is configured to be released from the second support portion when a rearward load greater than a predetermined value acts on the shroud.   The bumper reinforcement is provided with a reinforcing member that reinforces a portion of the bumper reinforcement to which the crash can is connected, and the reinforcing member is a pair of vertical extending portions that are vertically separated by a predetermined distance, The shroud support structure for an automobile according to claim 1, wherein a pair of vertically extending portions constituting the first support portion are provided.   8. The automobile shroud support structure according to claim 7, wherein the reinforcing member is joined to an upper wall and a lower wall of a bumper reinforcement.   A front end portion of the crash can is directly coupled to the bumper reinforcement, and a bracket is provided so as to be adjacent to the crash can. The shroud support structure for an automobile according to claim 1, wherein a pair of vertically extending portions constituting the first support portion are provided.   A projecting piece that protrudes forward is formed at one end of the bracket in the vehicle width direction, and a restricting portion that engages with the projecting piece and restricts movement of the shroud in the vehicle width direction is provided on a side portion of the shroud. The shroud support structure for an automobile according to claim 9.   A locked portion protruding forward is formed on an upper portion of the first portion of the shroud, and the locked portion is configured to be locked at an upper end portion of an upper vertical extending portion. Item 11. A shroud support structure for an automobile according to any one of Items 7 to 10. 2. The automobile shroud according to claim 1, wherein a positioning hole is formed in the second support portion in a vertical direction, and a downward projecting positioning pin that engages with the positioning hole is provided at the predetermined portion. Support structure.