JP2010234888A - Vehicle body structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle body structure inexpensively variable. <P>SOLUTION: This vehicle body structure has an interface bracket 5 interposing between a cabin part 2 of a vehicle body 1 and skeleton members 7 and 8 for constituting a part of the vehicle body by being joined to the cabin part. The interface bracket 5 is provided with: a first joining part 51 joined to the cabin part; and second joining parts 52 and 53 positioned in the vehicle width direction and detachably joined to the skeleton members. The skeleton members 7 and 8 can be replaced while constituting a part of the skeleton members 7 and 8, by fastening and joining the skeleton members 7 and 8 and the second joining parts 52 and 53 by welding the cabin part and the first joining part 51. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a vehicle body structure having a cabin portion of a vehicle body and a skeleton member that forms a front portion of the vehicle body by being coupled to the cabin portion.

  2. Description of the Related Art There is known a vehicle body structure that constitutes a vehicle body by configuring a front structure and a rear structure of a vehicle, and directly connecting these structures before and after a cabin. Since the vehicle design is changed according to the vehicle type, the vehicle body structure is set to a dedicated setting according to the vehicle type, and is often assembled on a dedicated production line for each vehicle type. An example of a vehicle body structure having such a configuration is Patent Document 1.

JP-T-2006-513082

In the vehicle body structure described above, the joints between the cabin and the front and rear structures are designed exclusively for each vehicle type, so in the same vehicle type, the vehicle variation can be changed by changing the vehicle body rigidity and design according to the vehicle grade. Even if it tries to increase, the structure of the joint becomes a bottleneck and it is manufactured on a dedicated line, so it is not possible to easily increase the number of vehicle variations at low cost. Even if variations are increased, rigidity to the vehicle body is required from the viewpoint of handling stability, and therefore it is not easy to increase vehicle variations while ensuring vehicle body rigidity.
An object of the present invention is to provide a vehicle body structure capable of increasing variations of a vehicle at a low cost.
An object of the present invention is to provide a vehicle body structure that can increase vehicle variations at low cost while ensuring vehicle body rigidity.

In order to solve the above-described problem, an invention according to claim 1 is a vehicle body structure including a cabin portion of a vehicle body and a skeleton member that forms a part of the vehicle body by being coupled to the cabin portion. A first joint portion interposed between the skeleton members and joined to the cabin portion, and a second joint portion detachably joined to the skeleton member, the first joint to the cabin portion and the skeleton member. It has the interface bracket which comprises a part of frame | skeleton member by couple | bonding a part and a 2nd junction part, respectively.
In the invention according to claim 2, the interface bracket is characterized in that the first joint is welded to the cabin, and the second joint is fastened to the skeleton member.
In the invention according to claim 3, the skeleton member constitutes the front portion of the vehicle body, has a suspension support member that supports at least the suspension, and a side member that is positioned in the vehicle width direction, and the second joint portion is the suspension support member. And an attachment part for fastening each side member.
In the invention according to claim 4, the second joint portion and the skeleton member have joint surfaces facing each other, and the shape of each joint surface extends in a direction intersecting the external force input direction; The first and third surfaces are respectively formed on the both end sides of the first surface and extending in the external force input direction, and the first to third surfaces are joined to each other and joined by a fastening member. It is a feature.

  According to the present invention, the cabin part includes the first joint part interposed between the cabin part and the skeleton member and joined to the cabin part, and the second joint part detachably joined to the skeleton member. Since the interface bracket that constitutes a part of the skeleton member is formed by connecting the first joint and the second joint to the skeleton member, the shape of the first joint portion of the interface bracket is maintained. By changing the second joint portion in correspondence with the skeleton member, the skeleton member having a different design can be coupled to the cabin portion via the interface bracket. For this reason, while being able to share a cabin part, since manufacture of a different vehicle type can be performed without changing a manufacturing line significantly, the variation of a vehicle can be increased at low cost.

  According to the present invention, the first side of the interface bracket is welded to the cabin, and the second side of the interface bracket is fastened to the skeleton member. The skeleton member can be easily exchanged for the part, and the number of vehicle variations can be increased at low cost.

  According to the present invention, the skeletal member includes at least a suspension support member that supports the suspension, and a side member that is positioned in the vehicle width direction to form the front portion of the vehicle body, and the second joint portion includes the suspension support member and each of the suspension support members. Since it has the attachment part which fastens a side member, a suspension support member and each side member can be replaced | exchanged easily, and workability | operativity improves.

  According to the present invention, the second joint portion and the skeleton member have joint surfaces facing each other, and the shape of each joint surface extends in a direction intersecting the external force input direction, Since the first and third surfaces are joined to each other by a fastening member, the first and third surfaces are respectively formed on the both ends of the first surface and extending in the external force input direction. By receiving the input load on the first surface, the input load on the fastening member that fastens the second and third surfaces is reduced. For this reason, the fastening location in the junction part of a 2nd junction part and a skeleton member can reduce, shortening of working time, reduction of a number of parts, and weight reduction can be achieved, and the variation of a vehicle can be increased at lower cost.

1 is a perspective view showing a schematic configuration of a vehicle body structure that is an embodiment of the present invention. It is a disassembled perspective view which shows the outline of the vehicle body front part structure provided with the interface bracket used as the characteristic structure of this invention. It is an enlarged view of the coupling | bond part of an interface bracket and a skeleton member. It is an enlarged view which shows the structural example of the coupling | bond part of an interface bracket and a skeleton member.

  Hereinafter, embodiments of the vehicle body structure of the present invention will be described with reference to the drawings. In FIG. 1, a vehicle body 1 is interposed between a cabin part 2, a front structure 3 coupled to a front part 2 </ b> A of the cabin part 2, and a front part 2 </ b> A and a front structure 3 of the cabin part 2. Interface bracket 5.

  The reason why the interface bracket 5 is interposed between the front part 2A of the cabin part 2 and the front part structure 3 is to change the design and structure around the front of the vehicle without changing the cabin part 2. The impression of the vehicle looks different by changing the design around the front, so even when developing the same variation, the cabin 2 can be shared and manufactured without significant changes to the production line. it can. For this reason, it is not necessary to provide a new production line for developing variations, leading to a reduction in production cost. From another perspective, it leads to efficient use of the current production line. In addition, the fact that the cabin 2 can be shared allows new vehicle variations to be developed while ensuring the comfort and strength against the load at the time of collision, so that the design time of the production line and the design time of the vehicle body 1 can be shortened. Development cost can be reduced, and ultimately the cost of the vehicle can be reduced.

  In this embodiment, the interface bracket 5 is interposed between the front part 2A and the front structure 3, but the vehicle body structure includes the interface bracket 5 between the rear part of the cabin part 2 and a rear structure (not shown). The front part 2A, the front part structure 3, and the rear part and the rear part structure of the cabin part 2 may be interposed between the cabin part 2 and the front / rear structure, respectively. 1 may be configured.

  The front structure 3 is located in the vehicle width direction W, and serves as a suspension support member for supporting left and right funro suspensions (not shown), and side members located below the spring house panels 30 and 31. 32, 33. Upper portions of the spring house panels 30 and 31 are coupled to both ends of the front upper member 34. The side members 32 and 33 are connected by a front lower member 35. Among these front structures 3, the spring house panel 30 and the side member 32, and the spring house panel 31 and the side member 33 are integrally formed to constitute the skeleton members 7 and 8.

  The sling house panel 30 and the side member 32, and the spring house panel 31 and the side member 33 may be individually formed. In this case, the spring house panels 30 and 31 and the side members 32 and 33 are respectively A skeleton member will be formed.

  As shown in FIG. 2, the interface bracket 5 extends in the vehicle width direction W and is positioned in the vehicle width direction W, and forms a front structure 3. The joint portions 37 and 38 of the skeleton members 7 and 8 and the second joint portions 52 and 53 that are detachably coupled are provided.

  The first joint portion 51 has a U-shaped cross section, and is continuous with the base portion 51A joined to the front portion of the dash panel 2C constituting the front portion 2A of the cabin portion 2, and the base portion 51A. Side portions 51B and 51C are formed to bend toward both side surfaces 2C1 and 2C2 and are joined to both side surfaces 2C1 and 2C2 positioned below the front pillars 11A and 11B (see FIG. 2). In this embodiment, the interface bracket 5 is joined by welding the base portion 51A and the side portions 51B and 51C to the dash panel 2C and the side surfaces 2C1 and 2C2, respectively, so that the material is the same as that of the dash panel 2C. Has been. In this embodiment, the cabin part 2 and the interface bracket 5 are made of steel.

  The second joint portions 52 and 53 extend downward from the base portion 51A and are fastened to the joint portions 37 and 38 of the left and right skeleton members 7 and 8, respectively, as shown in FIG. For this reason, the second joint portions 52 and 53 and the joint portions 37 and 38 are formed with joint surfaces 52A and 53A and joint surfaces 37A and 38A, respectively, so as to face each other. Attachment holes 54 and 55 and attachment holes 56 and 57 serving as attachment parts are formed at the edges of the joint surfaces 52A and 53A and the joint surfaces 37A and 38A, respectively. Bolts 59 serving as fastening members are inserted into the mounting holes from the joint surfaces 37A and 38A, respectively, and are fastened to nuts 60 arranged on the joint surfaces 52A and 53A, thereby joining the joint surfaces 52A and 53A. The surfaces 37A and 38A are fastened. That is, the interface bracket 5 is connected to the dash panel 2C constituting the front part 2A of the cabin part 2 by welding the first joint part 51 and the second joint parts 52 and 53 to the skeleton members 7 and 8. By fastening, a part of the skeleton members 7 and 8 is formed.

  According to such a vehicle body structure, the first joint 51 that is joined to the cabin 2 between the cabin 2 and the skeleton members 7 and 8 and the skeleton members that are positioned in the vehicle width direction are detachable. The interface bracket 5 having the second joint portions 52 and 53 to be joined is interposed, the first joint portion 51 of the interface bracket 5 and the cabin portion 2 are welded and fastened, and the second of the interface bracket 5 is fastened. The front portions of the vehicle body 1 are configured by fastening and joining the joint portions 52 and 53 and the skeleton members 7 and 8 with the bottle 59 and the nut 60, respectively. The shape of the first joint portion 51 of the interface bracket 5 is changed by changing the second joint portions 52 and 53 in correspondence with the skeleton members 7 and 8 while maintaining the conventional shape. , 8 can be coupled to the cabin part 2 via the interface bracket 5. For this reason, it is possible to share the cabin portion 2 by connecting the front structure having a skeleton member with a different design to the cabin portion 2 via the interface bracket 5, so that the manufacturing line is not changed significantly. Vehicles can be manufactured and vehicle variations can be increased at low cost. In the interface bracket 5, the first joint 51 is welded to the cabin 2 and the second joints 52 and 53 are fastened to the skeleton members 7 and 8, respectively. However, it becomes easy to replace the skeleton members 7 and 8 with respect to the cabin portion 2, and the number of vehicle variations can be increased at low cost. In addition, since the second joint portions 52 and 53 and the skeleton members 7 and 8 are fastened by the bolts 59 and the nuts 60, the skeleton members 7 and 8 can be easily replaced even during repair, and workability is improved. .

  In the said form, the frame members 7 and 8 and the 2nd junction parts 52 and 53 are fastened by fastening both with the volt | bolt 59 and the nut 60, as shown in FIG. For this reason, in particular, the joint surface 52A, 53A and the joint surfaces 37A, 38A extending in the vehicle up-down direction Z, which is the external input direction with the suspension attached, are tightened with the joint surface for input in the bolt shear direction. Since it is borne by the fastening force, that is, the frictional force of the coupling surface 61 where the two joining surfaces are combined, the number of fastening points tends to increase.

  However, as shown in FIG. 4, the shape of the joint surfaces 52A and 53A of the interface bracket 5 and the joint surfaces 37A and 38A of the skeleton members 7 and 8 that face each other intersects with the vehicle vertical direction Y. First surfaces 52A1 and 53A1 and first surfaces 37A1 and 38A1, and second surfaces 52A2 and 53A2 that extend in the vehicle up-down direction Z and are located at both ends of the first surface, that is, in the vehicle longitudinal direction, respectively. Crank shapes having second surfaces 37A2 and 38A2 and third surfaces 52A3 and 53A3 and third surfaces 37A3 and 38A3 are formed, and the surfaces are joined to each other so that the first surface to the third surface are formed. The bolts 59 and the nuts 60 may be fastened and combined.

  With such a configuration, since the input load is received by the first surfaces 52A1 and 53A1 and the first surfaces 37A1 and 38A1, the input load to the bolt 59 and the nut 60 that fasten the second and third surfaces. Is reduced. For this reason, the number of fastening points at the joints between the second joints 52 and 53 and the skeleton members 7 and 8 is reduced, the work time on the production line and the work time during repair are reduced, the number of parts is reduced, and the weight is reduced. The number of vehicle variations can be increased at a lower cost.

DESCRIPTION OF SYMBOLS 1 Car body 2 Cabin part 3 Front structure 5 Interface bracket 7, 8 Frame member 30, 31 Suspension support member 32, 33 Side member 37A, 38A Frame member joint surface 37A1, 38A1 First surface 37A2, 38A2 Second Surface 37A3, 38A3 Third surface 51 First joint 52, 53 Second joint 52A, 53A Second joint 52A1, 53A1 First surface 52A2, 53A2 Second surface 52A3, 53A3 Third surface 54, 55 Mounting portion 59 Fastening member Z External force input direction

Claims (4)

A vehicle body structure having a cabin part of a vehicle body and a skeleton member that forms a part of the vehicle body by being coupled to the cabin part,
A first joint part interposed between the cabin part and the skeleton member and joined to the cabin part; and a second joint part detachably joined to the skeleton member; A vehicle body structure comprising an interface bracket that constitutes a part of the skeleton member by coupling a first joint portion and a second joint portion to the skeleton member.   2. The vehicle body structure according to claim 1, wherein the interface bracket has a first joint portion welded to the cabin portion and a second joint portion fastened to the skeleton member. The skeleton member constitutes a front portion of the vehicle body, and includes a suspension support member that supports at least a suspension, and a side member that is positioned in the vehicle width direction,
3. The vehicle body structure according to claim 1, wherein the second joint portion includes an attachment portion that fastens the suspension support member and each side member. The second joint portion and the skeleton member are
There are joint surfaces facing each other, and each joint surface has a first surface extending in a direction intersecting the external force input direction and both ends of the first surface in the external force input direction. Formed with extending second and third surfaces, respectively,
4. The vehicle body structure according to claim 1, wherein the first to third surfaces are joined to each other and joined by a fastening member.

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