JP2015193282A - Reinforcement member of bumper device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reinforcement member of a bumper device for a vehicle, for preventing one end of a bumper reinforcement from bending when an object collides with a narrow area on one end side in a vehicle width direction, at the front end or the rear end of the vehicle.SOLUTION: A reinforcement member 10 includes: a reinforcement part 20 extended along an extending direction of an end part in a vehicle width direction of a bumper reinforcement BR, to be inserted into one end part in the vehicle width direction of the bumper reinforcement BR from one end in the vehicle width direction of the bumper reinforcement BR, for reinforcing one end part in the vehicle width direction of the bumper reinforcement BR; and an attachment part 30 extended in a longitudinal direction of a vehicle from an end part outside in the vehicle width direction of the reinforcement part 20, to be attached to each of side members SL, SR or each of support members SPL, SPR provided outside in the vehicle width direction when viewed from the side members SL, SR. The reinforcement part 20 is extended so as to reach at least a position in front of or behind each of the side members SL, SR, when inserted into one end part in the vehicle width direction of the bumper reinforcement BR.

Description

  The present invention relates to a reinforcing member for a vehicle bumper device. In particular, it is related with the reinforcement member which reinforces bumper reinforcement.

  2. Description of the Related Art Conventionally, as described in Patent Document 1 below, a vehicle including a bumper device that absorbs an impact when an object collides with the front end (or rear end) of the vehicle while the vehicle is running is known. . The bumper device described in Patent Document 1 includes a pair of left and right side members that extend in the vehicle front-rear direction and a bumper reinforcement that extends in the vehicle width direction in front of (or behind) the side members. Yes. The bumper reinforcement extends to the outer side in the vehicle width direction when viewed from the side member. An impact absorbing member is disposed between the bumper reinforcement and the side member.

JP 2013-189124 A

  In the conventional vehicle described above, an object collides with a narrow region (for example, a portion extending from the front (or the rear) of the side member) to one end in the vehicle width direction on one end side in the vehicle width direction (hereinafter, a slight overlap collision) The end of the bumper reinforcement may be compressed in the vehicle front-rear direction and deformed into a plate shape. In this case, the end portion of the bumper reinforcement is easily bent. When the end of the bumper reinforcement is bent, a load acts in a direction inclined with respect to the axial direction of the shock absorbing member. That is, the shock absorbing member is difficult to be compressed in the axial direction. As a result, the shock is not absorbed much. Therefore, the bumper reinforcement needs to be strong enough to prevent the end portion from being bent during a minute overlap collision. For example, the thickness of the bumper reinforcement needs to be sufficiently large. However, if the thickness of the entire bumper reinforcement including the intermediate portion in the vehicle width direction, which is irrelevant to the slight overlap collision, increases, the weight of the bumper reinforcement increases.

  The present invention has been made to cope with the above problem, and its purpose is that one end of a bumper reinforcement bends when an object collides with a narrow region at one end in the vehicle width direction at the front end or rear end of the vehicle. It is providing the reinforcement member of the bumper apparatus for vehicles for suppressing this. In addition, in the description of each constituent element of the present invention below, in order to facilitate understanding of the present invention, reference numerals of corresponding portions of the embodiment are described in parentheses, but each constituent element of the present invention is The present invention should not be construed as being limited to the configurations of the corresponding portions indicated by the reference numerals of the embodiments.

  In order to achieve the above object, the present invention is characterized by a hollow bumper reinforcement (BR) extending in the vehicle width direction in front of or behind a side member (SL, SR) extending in the vehicle longitudinal direction. ) Is a reinforcing member (10) of a vehicle bumper device that extends along the extending direction of the end portion in the vehicle width direction of the bumper reinforcement, and extends from one end in the vehicle width direction of the bumper reinforcement. A reinforcing portion (20) that is inserted into one end portion in the direction of the vehicle to reinforce one end portion in the vehicle width direction of the bumper reinforcement, and extends in the vehicle front-rear direction from the end portion on the outer side in the vehicle width direction of the reinforcing portion. Or a mounting portion (30) attached to the side member via a support member (SPL, SPR) provided on the outer side in the vehicle width direction when viewed from the side member, and a reinforcing portion , It lies in the least side members of being extended so as to reach forward or backward, and the reinforcing member for a vehicle bumper system in a state of being inserted in the vehicle width direction end portion of the bumper reinforcement.

  In this case, you may provide the bumper extension part (40) extended in the vehicle width direction outer side from the edge part of the vehicle width direction outer side of an attaching part.

  Further, in this case, the attachment portion may be configured to absorb an impact applied to the bumper reinforcement by being compressed in the vehicle front-rear direction when a load on the front or rear of the vehicle is applied to the bumper reinforcement. Good.

  In this case, the metal material may be formed by extrusion so that the extrusion direction coincides with the vehicle height direction.

  By inserting the reinforcing portion of the reinforcing member according to the present invention into the end portion of the bumper reinforcement, the end portion of the bumper reinforcement is reinforced. Therefore, it is suppressed that the end portion in the vehicle width direction of the bumper reinforcement is compressed in the vehicle front-rear direction and deformed into a plate shape at the time of a slight overlap collision. Therefore, bending of the end portion in the vehicle width direction of the bumper reinforcement is suppressed. Therefore, a load acts on the shock absorbing member disposed between the bumper reinforcement and the side member in the axial direction (vehicle longitudinal direction). Thereby, the impact absorbing member is compressed in the axial direction (vehicle longitudinal direction). Therefore, the impact due to the minute overlap collision is efficiently absorbed.

  Further, since it is not necessary to increase the thickness of the bumper reinforcement in order to increase the strength of the bumper reinforcement, the bumper reinforcement can be reduced in weight. Further, the reinforcing member according to the present invention is assembled to the bumper reinforcement so that the reinforcing portion is inserted into the bumper reinforcement from one end in the vehicle width direction of the bumper reinforcement. The object that collided with the end of the vehicle is the end in the vehicle width direction of the bumper reinforcement, and the front end of the mounting portion (and the bumper extension) located on the outer side in the vehicle width direction of the bumper reinforcement among the reinforcing members (Or rear end). That is, the attachment portion (and the bumper extension portion) functions as a portion obtained by extending the bumper reinforcement in the vehicle width direction. Therefore, the vehicle width direction end part of bumper reinforcement should just be located in front (or back) of a side member. In other words, the bumper reinforcement does not need to be extended so as to protrude outward in the vehicle width direction when viewed from the side member. Even if the shape of the end of the bumper cover in the vehicle width direction varies depending on the type of vehicle, simply changing the shape of the mounting part (and the bumper extension) to match the shape of the bumper cover, A device can be configured. That is, bumper reinforcement can be commonly applied to a plurality of vehicle types. The attachment portion may be directly assembled to the side member, or may be assembled to the side member via a support member.

  Another feature of the present invention is that the reinforcing portion is fastened to the bumper reinforcement by a common fastening member together with an impact absorbing member provided between the side member and the bumper reinforcement. According to this, a fastening member can be reduced compared with the case where the fastening member which fastens a reinforcement member and bumper reinforcement and the fastening member which fastens an impact-absorbing member and bumper reinforcement are required individually.

It is the schematic which shows the outline | summary of a micro overlap collision test. It is a top view which shows the structure of the right end part in the front part of the vehicle to which the reinforcement member which concerns on one Embodiment of this invention was applied. It is a perspective view of the reinforcement member concerning one embodiment of the present invention. It is a top view of the reinforcement member of FIG. It is a top view of the reinforcing member which concerns on the modification of this invention. It is sectional drawing which shows the cross section perpendicular | vertical to the vehicle width direction of the bumper reinforcement with which the reinforcement member which concerns on FIG. 5 was assembled | attached, and an impact-absorbing member.

  A reinforcing member 10 according to an embodiment of the present invention will be described. First, the configuration of the front portion of the vehicle 1 to which the reinforcing member 10 is assembled will be briefly described. As shown in FIG. 1, the vehicle 1 is disposed in the vehicle width direction at intervals and in front of a pair of left and right side members SL, SR extending in the vehicle front-rear direction and the side members SL, SR. A bumper reinforcement BR extending in the vehicle width direction. Furthermore, the vehicle 1 includes support members SPL and SPR that are arranged so as to be adjacent to the outer sides in the vehicle width direction when viewed from the side members SL and SR.

  The side members SL and SR are respectively disposed at positions such that the distance from the left end and the right end in the vehicle width direction of the vehicle 1 is about 1/4 of the vehicle width. The side members SL and SR each have a cylindrical main body portion extending in the vehicle front-rear direction, and flange-shaped bracket portions formed on the front end surface and the rear end surface of the main body portion. The bumper reinforcement BR is formed in a cylindrical shape (hollow) extending in the vehicle width direction. A cross section perpendicular to the extending direction of the bumper reinforcement BR has a substantially rectangular shape. Further, as shown in FIG. 2, the intermediate portion including the vehicle width direction center portion of the bumper reinforcement BR is curved so that the vehicle width direction outer side is located slightly rearward than the vehicle width direction inner side in plan view. doing. Both ends of the bumper reinforcement BR in the vehicle width direction are formed so as to extend in a straight line obliquely rearward. Both ends in the vehicle width direction of the bumper reinforcement BR are positioned in front of the side members SL and SR. The support members SPL and SPR are assembled to members (for example, side members SL and SR) constituting the vehicle skeleton. The support members SPL and SPR have a cylindrical main body portion extending in the vehicle front-rear direction, and a flange-shaped bracket portion formed on the front end surface and the rear end surface of the main body portion. The bumper reinforcement BR is connected to the side members SL and SR and the support members SPL and SPR via the shock absorbing members SA and SA. That is, the front end portions of the shock absorbing members SA and SA are assembled to the left and right end portions of the bumper reinforcement BR, and the rear end portions of the shock absorbing members SA and SA are assembled to the flange portions of the side members SL and SR. The bumper reinforcement BR is connected to the support members SPL and SPR via the reinforcing members 10 and 10 according to the present invention. That is, the front ends of the reinforcing members 10 and 10 are assembled to the left and right ends of the bumper reinforcement BR, respectively, and the rear ends of the reinforcing members 10 and 10 are assembled to the flanges of the support members SPL and SPR. In the present embodiment, the bumper reinforcement BR, the shock absorbing members SA and SA, and the reinforcing members 10 and 10 are described as members provided at the front end portion of the vehicle. However, in the present invention, these are the rear end portions of the vehicle. The present invention can also be applied to the case where it is provided. In FIG. 2, only the right end portion in the vehicle width direction at the front portion of the vehicle 1 is shown. Further, the left end portion in the vehicle width direction at the front portion of the vehicle 1 is symmetric with the right end portion in the vehicle width direction, and thus the description thereof is omitted as appropriate.

  Next, the reinforcing member 10 will be described. As shown in FIGS. 3 and 4, the reinforcing member 10 includes a reinforcing portion 20, an impact absorbing portion 30, and a bumper extension portion 40. The reinforcement part 20, the impact absorption part 30, and the bumper extension part 40 are integrally formed by extrusion. The extrusion direction in the extrusion process corresponds to the vehicle height direction when the reinforcing member 10 is assembled to the vehicle. Therefore, the shape of the cross section of the reinforcing member 10 perpendicular to the vehicle height direction is the same regardless of the cutting position.

  The reinforcement part 20 is extended so that the extension direction of the edge part of bumper reinforcement BR may be followed. The reinforcing part 20 has a front wall part 21 and a rear wall part 22. The front wall portion 21 and the rear wall portion 22 are formed in parallel to the front wall and the rear wall at the end portion of the bumper reinforcement BR. The front wall portion 21 and the rear wall portion 22 are separated from each other in the vehicle front-rear direction. The reinforcing portion 20 has a left wall portion 23 that extends from the left end portion of the front wall portion 21 and is connected to the left end portion of the rear wall portion 22. The reinforcing portion 20 has a right wall portion 24 that extends from the right end portion of the front wall portion 21 and is connected to the right end portion of the rear wall portion 22. The external dimensions of each part of the reinforcing part 20 are set so that the reinforcing part 20 can be inserted into the bumper reinforcement BR. The reinforcing portion 20 is extended so as to reach at least the front of the side member SR in a state of being inserted into the right end portion of the bumper reinforcement BR.

  The shock absorber 30 extends in the vehicle front-rear direction. The shock absorbing part 30 is connected to the right end of the reinforcing part 20. This shock absorbing portion 30 corresponds to the mounting portion of the present invention. The shock absorber 30 includes an inner wall portion 31 and an outer wall portion 32 that extend in the vehicle front-rear direction. The front end of the inner wall portion 31 coincides with the rear end of the right wall portion 24 of the reinforcing portion 20. The outer wall portion 32 is disposed outward in the vehicle width direction (rightward in FIG. 2) when viewed from the inner wall portion 31. The front end of the outer wall portion 32 is located slightly behind the front end of the right wall portion 24. The front end of the inner wall portion 31 and the front end of the outer wall portion 32 are connected by a front wall portion 33 similar to the front wall portion 21 of the reinforcing portion 20. The rear end position of the inner wall portion 31 in the vehicle front-rear direction and the rear end position of the outer wall portion 32 in the vehicle front-rear direction are the same. The rear end of the inner wall portion 31 and the rear end of the outer wall portion 32 are connected by a rear wall portion 34 extending in the vehicle width direction.

  Ribs R1 to R6 are formed in the space SP surrounded by the right wall portion 24, the inner wall portion 31, the outer wall portion 32, the front wall portion 33, and the rear wall portion 34. The rib R <b> 1 extends outward from the connecting portion between the rear wall portion 22 and the right wall portion 24 in the vehicle width direction and is connected to the outer wall portion 32. The rib R <b> 1 is formed in parallel with the rear wall portion 22. The rib R <b> 2 extends outward in the vehicle width direction from the intermediate portion in the front-rear direction of the inner wall portion 31 and is connected to the outer wall portion 32. The rib R3 extends from the connecting portion between the inner wall portion 31 and the rear wall portion 22 of the reinforcing portion 20 outward and rearward in the vehicle width direction, and is connected to the connecting portion between the outer wall portion 32 and the rib R2. The rib R4 is an intermediate portion in the vehicle width direction on the rear side surface of the rib R1, and extends inward and rearward in the vehicle width direction from a portion located on the left side when viewed from the connection portion between the rib R1 and the outer wall portion 32. The inner wall 31 and the rib R2 are connected to the connecting portion.

  The rib R5 and the rib R6 are respectively formed so as to connect diagonals of a space that is surrounded by the inner wall portion 31, the outer wall portion 32, the rear wall portion 34, and the rib R2 and has a substantially rectangular shape in plan view. That is, the rib R5 extends from the connection portion between the inner wall portion 31 and the rib R2 outward and rearward in the vehicle width direction, and is connected to the connection portion between the outer wall portion 32 and the rear wall portion. The rib R6 extends from the connecting portion between the outer wall portion 32 and the rib R2 inward in the vehicle width direction and rearward, and is connected to the connecting portion between the inner wall portion 31 and the rear wall portion 34.

  A flange-like flange portion 35 is formed at the rear end of the impact absorbing portion 30 and extends inward in the vehicle width direction and outward in the vehicle width direction. The flange portion 35 is formed with a through hole penetrating from the front surface to the rear surface.

  The bumper extension portion 40 is formed so as to protrude outward in the vehicle width direction from the surface on the outer side in the vehicle width direction at the front end portion of the outer wall portion 32 of the impact absorbing portion 30. The bumper extension portion 40 has a front wall portion 41 that extends from the connecting portion between the outer wall portion 32 and the front wall portion 33 outward in the vehicle width direction and rearward. Further, the bumper extension portion 40 has a rear wall portion 42 that extends outward and forward in the vehicle width direction from the connection portion between the outer wall portion 32 and the rib R <b> 2 and is connected to the front wall portion 41. The shapes of the front end portion of the impact absorbing portion 30 and the bumper extension portion 40 are set according to the shape of the bumper cover of the vehicle to which the reinforcing member 10 is applied.

  The reinforcing member 10 configured as described above is assembled to the bumper reinforcement BR as follows. First, the reinforcement part 20 is inserted into the inside from the right end of the bumper reinforcement BR. And the reinforcement part 20 is fastened by the right end part of bumper reinforcement BR with the volt | bolt and nut which are not shown in figure. Further, the shock absorbing member SA is fastened to the right end portion of the bumper reinforcement BR by bolts and nuts (not shown). The reinforcing member 10 and the impact absorbing member SA are fastened to the left end portion of the bumper reinforcement BR in the same manner as the right end portion.

  The flange portions 35 of the reinforcing members 10 and 10 assembled to the left and right ends of the bumper reinforcement BR as described above are fastened to the support members SPL and SPR by bolts and nuts (not shown). Further, the shock absorbing members SA and SA are fastened to the side members SL and SR by bolts and nuts (not shown).

  As described above, the end portion of the bumper reinforcement BR is reinforced by inserting the reinforcing portion 20 of the reinforcing member 10 into the end portion of the bumper reinforcement BR. Therefore, the end of the bumper reinforcement BR in the vehicle width direction is suppressed from being compressed in the vehicle front-rear direction during a slight overlap collision. That is, it is suppressed that the vehicle width direction edge part of bumper reinforcement BR deform | transforms into plate shape. Therefore, bending of the end portion in the vehicle width direction of the bumper reinforcement BR is suppressed. Therefore, a load acts on the shock absorbing portion 30 and the shock absorbing member SA in the axial direction (vehicle longitudinal direction). Thereby, the shock absorbing part 30 and the shock absorbing member SA are compressed in the axial direction thereof. Therefore, the impact due to the minute overlap collision is efficiently absorbed.

  Moreover, since it is not necessary to increase the thickness of the bumper reinforcement in order to increase the strength of the bumper reinforcement BR, the bumper reinforcement BR can be reduced in weight. Further, the reinforcing members 10 are assembled to the bumper reinforcement BR so as to protrude outward in the vehicle width direction from the left end and the right end of the bumper reinforcement BR. An object that has collided with the end portion of the vehicle is received by the end portion in the vehicle width direction of the bumper reinforcement BR, the attachment portion 30, and the bumper extension portion 40. That is, the front end part of the shock absorbing part 30 and the bumper extension part 40 function as a part obtained by extending the bumper reinforcement BR in the vehicle width direction. Therefore, the vehicle width direction both ends of bumper reinforcement BR should just be located ahead of side member SL, SR. In other words, the bumper reinforcement BR does not need to be extended so as to protrude outward in the vehicle width direction when viewed from the side members SL and SR. Even if the shape of the end of the bumper cover in the vehicle width direction differs depending on the vehicle type, the shape of the shock absorbing portion 30 and the bumper extension portion 40 is changed so as to match the shape of the bumper cover. A bumper device can be constructed. That is, the bumper reinforcement BR can be commonly applied to a plurality of vehicle types. Further, in this case, there is a low possibility that other members such as the bumper reinforcement BR and the bumper cover interfere with each other. Therefore, the process of processing the bumper reinforcement BR in order to avoid the interference between the bumper reinforcement BR and other members (for example, the process of trimming the end in the vehicle width direction so as not to interfere with the bumper cover) can be reduced.

  Furthermore, in carrying out the present invention, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the object of the present invention.

  The number and arrangement of the ribs in the shock absorber 30 are not limited to the above embodiment. The number and arrangement of the ribs may be determined in consideration of the balance between the strength of the shock absorbing member SA and the strength of the shock absorbing portion 30. Further, for example, the impact absorbing portion 30 may be extended rearward from the above embodiment, and the side portion of the rear end portion may be fixed to the side surface of the side member.

  Further, the reinforcing portion 20 and the shock absorbing member SA may be simultaneously fastened to the bumper reinforcement BR using common bolts and nuts. For example, as shown in FIG. 5, a plurality of ribs R <b> 7 are formed in the reinforcing portion 20, and a plurality of (for example, two) cylindrical portions 201 extending in the vehicle height direction are formed. Also, as shown in FIG. 6, the upper wall portion SA1 and the lower wall portion SA2 are formed such that the front end portions of the upper wall portion SA1 and the lower wall portion SA2 of the shock absorbing member SA protrude forward from the side wall portion. The bumper reinforcement BR is sandwiched between the two. And the through-hole H1 penetrated to an up-down direction is each formed in the front-end part of upper wall part SA1 and lower wall part SA2. Further, a through hole H2 penetrating in the vertical direction is also formed in the upper wall portion SA1 and the lower wall portion SA2 of the bumper reinforcement BR. The reinforcing portion 20 is inserted into the bumper reinforcement BR, and the through hole H1, the through hole H2, and the cylindrical portion 201 are inserted in a state where the bumper reinforcement BR is inserted between the upper wall portion SA1 and the lower wall portion SA2. The positions of the through hole H1, the through hole H2, and the cylindrical portion 201 are set so that the positions match. Bolts are inserted into the through holes H1, the through holes H2, and the cylindrical portion 201, and the tip ends of the bolts are fastened to the nuts. According to this, compared with the case where the fastening member which fastens the reinforcing member 10 and the bumper reinforcement BR and the fastening member that fastens the shock absorbing member SA and the bumper reinforcement BR are individually required, the number of fastening members is reduced. it can.

  Moreover, in the said embodiment, the impact absorption part 30 absorbs the impact which acted on bumper reinforcement BR by being compressed in the vehicle front-back direction, when the load to back is applied to bumper reinforcement. However, the shock absorbing part 30 may not have a function of absorbing the shock, but may simply function as a support part for supporting the reinforcing part 20.

  Further, when the distance between the side members SL, SR and the end of the bumper cover in the vehicle width direction is short, the bumper extension 40 may be deleted.

DESCRIPTION OF SYMBOLS 10 ... Reinforcement member, 20 ... Reinforcement part, 30 ... Shock absorption part, 40 ... Bumper extension part, BR ... Bumper reinforcement, R1-R7 ... Rib, SA ... Shock absorbing member, SL, SR ... side member, SP ... space, SPL, SPR ... support member

Claims (5)

A reinforcing member for a vehicle bumper device that reinforces a hollow bumper reinforcement that extends in the vehicle width direction in front of or behind a side member that extends in the vehicle longitudinal direction,
A vehicle width of the bumper reinforcement that extends along the extending direction of the end portion in the vehicle width direction of the bumper reinforcement and is inserted into one end portion in the vehicle width direction from one end in the vehicle width direction of the bumper reinforcement. A reinforcing portion that reinforces one end in the direction;
The side member extends from the end of the reinforcing portion on the outer side in the vehicle width direction in the vehicle front-rear direction and via the side member or a support member provided on the outer side in the vehicle width direction when viewed from the side member. And a mounting portion attached to the
The said reinforcement part is a reinforcement member of the bumper apparatus for vehicles currently extended so that it may reach at least the front or back of the said side member in the state inserted in the vehicle width direction one end part of the said bumper reinforcement. In the reinforcing member of the bumper device for vehicles according to claim 1,
A reinforcing member for a vehicular bumper device, comprising: a bumper extension portion extending outwardly in the vehicle width direction from an end portion of the attachment portion on the outer side in the vehicle width direction. In the reinforcing member of the bumper device for vehicles according to claim 1 or 2,
The mounting portion absorbs an impact applied to the bumper reinforcement by being compressed in the vehicle front-rear direction when a vehicle front or rear load is applied to the bumper reinforcement, and a reinforcing member for a vehicle bumper device . In the reinforcement member of the bumper device for vehicles according to any one of claims 1 to 3,
The said reinforcement part is a reinforcement member of the bumper apparatus for vehicles with which the said bumper reinforcement is fastened by the common fastening member with the impact-absorbing member provided between the said side member and the said bumper reinforcement. In the reinforcement member of the bumper device for vehicles according to any one of claims 1 to 4,
A reinforcing member for a bumper device for a vehicle, which is formed by extruding a metal material so that an extrusion direction coincides with a vehicle height direction.

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