JP6914778B2 - Shock absorber and shock absorber - Google Patents

Description

The present invention relates to a vehicle shock absorbing member and a shock absorbing device.

Conventionally, as described in Patent Document 1 below, a vehicle provided with a shock absorbing device that deforms and absorbs a shock at the time of a collision of the vehicle is known. This shock absorber includes a pair of left and right side members, a bumper reinforcement, and a pair of left and right shock absorbers. The side members are extended in the front-rear direction of the vehicle. The bumper reinforcement extends in the vehicle width direction in front of the pair of left and right side members. The bumper reinforcement is attached to the side member via a pair of left and right shock absorbing members. The side members and the shock absorbing member are formed in a square cylinder shape extending in the front-rear direction of the vehicle. That is, the side member and the shock absorbing member have an upper wall portion, a lower wall portion, a left wall portion, and a right wall portion extending in the front-rear direction of the vehicle, respectively. The front end of the side member is open. The rear end of the shock absorbing member is inserted into the front end of the side member. Through holes are provided in the wall portions (left wall portion and right wall portion) forming the front end portion of the side member and the wall portion (left wall portion and right wall portion) forming the rear end portion of the shock absorbing member, respectively. ing. With the rear end of the shock absorbing member inserted into the front end of the side member, the through hole of the side member and the through hole of the shock absorbing member overlap. A bolt is inserted into both through holes, and a nut is fastened to the tip of the bolt. In this way, the side member and the shock absorbing member are connected. When an object collides with the front end of a vehicle equipped with the conventional shock absorbing device, the portion of the shock absorbing member located between the side member and the bumper reinforcement is compressed in the axial direction (front and rear direction of the vehicle). By deforming so as to be, the impact due to the collision is absorbed.

Japanese Patent No. 5544284

As described above, in the shock absorbing device of Patent Document 1, a bolt is inserted into a through hole provided in a portion where the shock absorbing member and the side member overlap, and a nut is fastened to the tip of the bolt. , The shock absorbing member and the side member are connected. In this configuration, when a collision load is applied to the shock absorbing member and the shock absorbing member is pressed backward, the bolt abuts on the inner peripheral surface of the through hole of the shock absorbing member, and the collision load is received at the abutting portion. Be done. Therefore, there is a risk that the peripheral edge of the through hole will be destroyed before the shock absorbing member is compressively deformed. For example, the through hole may have an enlarged diameter. In this case, the shock absorbing member is tilted with respect to the side member, the shock absorbing member is hardly compressed and deformed, and the shock due to the collision is not absorbed. That is, the shock absorbing performance of the shock absorbing member is hardly exhibited.

The present invention has been made to address the above problems, and an object of the present invention is to provide a shock absorbing member and a shock absorbing device capable of sufficiently exhibiting shock absorbing performance. In the following description of each component of the present invention, in order to facilitate understanding of the present invention, the reference numerals of the corresponding parts of the embodiments are described in parentheses, but each component of the present invention is described. It should not be construed as limited to the configuration of the corresponding parts indicated by the reference numerals of the embodiments.

To achieve the above object, the present invention, the side members having a cylindrical body portion extending in the vehicle longitudinal direction _{(MB) (10 L, 10} R, 10B L, 10B R) and, in the longitudinal direction of the vehicle _{A shock absorbing member (20 L} , 20 _R , 20 A _L , 20 A _R , 20 B _L , 20 B _R , 20 C _L , 20 C _R ) having an extending tubular main body (21, 21 A, 21 B, 21 C) is provided. In the shock absorbing device (1, 1A, 1B, 1C), the rear end portion of the main body portion of the shock absorbing member is inserted into the main body portion of the side member from the front end of the main body portion of the side member, and the side portion is inserted. A set of through holes (HU) located on the same straight line in one side surface portion of the portion where the main body portion of the member and the main body portion of the shock absorbing member overlap and the other side surface portion facing the one side surface portion. _{12, HU 213, H 41U,} HU 214, HU 111; HL 12, HL 213, H 41L, HL 214, HL 111; HU 12, HU 213A, HU 214A, HU 111; HL 12, HL 213A, HL 214A, _{HL 111; HU 12, HU 213B} , HU 214B, HU 111; HL 12, HL 213B, HL 214B, HL 111; HU 12, HU 213C, HU 214C, HU 111; HL 12, HL 213C, HL 214C, HL 111 ) Is provided, and by inserting a rod-shaped fastening member (BT1) into the set of through holes from the one side surface side, the shock absorbing member moves in the vehicle front-rear direction with respect to the side member. Is regulated, and plate-shaped ribs (215U, 215L) extending in the front-rear direction of the vehicle are provided inside the main body of the shock absorbing member, and when a collision load is applied to the shock absorbing member, the collision load is applied. receiving by the said supporting portion to alleviate the collision load applied to the inner peripheral surface of the through-hole of the shock absorbing member _{(40, BU 213A, BL 213A} , BU 214A, BL 214A, STP, 40C) as said impact absorbing It is arranged in the main body of the member, and when the fastening member is inserted and a collision load is applied to the shock absorbing member, it comes into contact with the rear end of the rib and constitutes the outer shell of the main body of the shock absorbing member. The movement of the shock absorbing member is restricted by contacting the inner surface of the wall portion. It is a shock absorbing device provided with a tubular portion (41U, 41L).
In this case, a plurality of sets of the through holes are provided in a portion where the main body of the side member and the main body of the shock absorbing member overlap, and the plurality of fastening members are inserted into the plurality of sets of through holes. A plurality of ribs (215U, 215L) extending in the front-rear direction of the vehicle and formed in a plate shape parallel to each other are provided inside the main body of the shock absorbing member, and the supporting portion is formed of the shock absorbing member. A plurality of tubular portions (41U, 41L) arranged in the main body and into which the plurality of fastening members are inserted, respectively, and when a collision load is applied to the shock absorbing member, the rear ends of the plurality of ribs. The shock absorbing device may include a plurality of tubular portions that abut each of the portions and a connecting portion (42) that connects the plurality of tubular portions.

Further, a feature of the present invention is a tubular main body extending in the front-rear direction of the vehicle, which connects a side member having a tubular main body extending in the front-rear direction of the vehicle and a tubular bumper reinforcement extending in the vehicle width direction. The shock absorbing member having the rear end portion of the main body portion of the shock absorbing member is inserted into the main body portion of the side member from the front end of the main body portion of the side member, and the main body portion of the side member and the shock absorbing member. A plurality of sets of through holes located on a plurality of straight lines are provided on one side surface portion of a portion where the main body portion of the member overlaps and the other side surface portion facing the one side surface portion. By inserting a rod-shaped fastening member into the set of through holes from the side surface portion side of the vehicle, the movement of the shock absorbing member in the vehicle front-rear direction with respect to the side member is restricted, and the main body portion of the shock absorbing member is restricted. A plurality of ribs extending in the front-rear direction of the vehicle and formed in a plate shape parallel to each other are provided inside, and when a collision load is applied to the impact absorbing member, the impact load is received and the impact absorption is received. A support portion for alleviating a collision load applied to the inner peripheral surface of the through hole of the member, which is arranged in the main body portion of the shock absorbing member, and the plurality of fastening members are inserted into the shock absorbing member. A support portion is provided having a plurality of tubular portions that come into contact with the rear end portions of the plurality of ribs when a collision load is applied, and a connecting portion (42) that connects the plurality of tubular portions. It is because it is a shock absorbing member.

When an object collides with the front end of the vehicle to which the shock absorbing device or the shock absorbing member according to the present invention is applied, the collision load acts on the front end of the shock absorbing member. As a result, when the shock absorbing member is pressed backward, the outer peripheral surface of the fastening member comes into contact with the front side portion of the inner peripheral surface of the through hole of the shock absorbing member, and the contact portion causes a part of the collision load. Is received, and a part of the collision load is received by the support part. That is, the collision load is dispersed on the inner peripheral surface of the through hole and the inner peripheral surface of the support portion. Therefore, it is possible to avoid a situation in which the collision load is concentrated on the peripheral portion of the through hole immediately after the collision and the portion is destroyed, so that the shock absorption performance is not sufficiently exhibited. That is, the front end portion and the intermediate portion of the main body portion are compressed and deformed in the front-rear direction of the vehicle while the rear end portion of the main body portion of the shock absorbing member is supported by the side members without being significantly destroyed. As described above, according to the present invention, the shock absorbing performance of the shock absorbing member can be sufficiently exhibited.

At the time of a collision of a vehicle to which the shock absorbing device according to the present invention is applied, the rear end portion of the rib comes into contact with the tubular portion. At that time, the tubular portion abuts on the inner surface of the main body portion, and the movement (or rotation) of the tubular portion is restricted. Further, when a plurality of ribs are provided, the plurality of tubular portions are connected to support the plurality of ribs, so that the plurality of tubular portions regulate each other's movement. Therefore, a part of the collision load is transmitted from the rib to the tubular part, and a part of the collision load is received by the tubular part. According to this, the collision load is dispersed on the inner peripheral surface of the through hole and the tubular portion. Therefore, the shock absorbing performance of the shock absorbing member can be fully exhibited.

_{Another feature of the present invention is that the support portion is a curved portion (BU 213A} , BL _213A , BU _214A ) in which the peripheral edge portion of the through hole of the shock absorbing member is curved inward of the main body portion (21A). , BL _214A ), which is a shock absorber.

At the time of a collision of a vehicle to which the shock absorbing device according to the present invention is applied, the outer peripheral surface of the fastening member comes into contact with the inner peripheral surface of the curved portion in addition to the front side portion of the inner peripheral surface of the through hole of the shock absorbing member. Therefore, the collision load is received by the contact portion. Therefore, it is possible to prevent the collision load from being concentrated on the inner peripheral surface of the through hole of the shock absorbing member. That is, the collision load is dispersed on the inner peripheral surface of the through hole and the inner peripheral surface of the curved portion. Therefore, the shock absorbing performance of the shock absorbing member can be fully exhibited.

Another feature of the present invention is that the main body portion (21B) of the shock absorbing member has a plurality of wall portions extending in the front-rear direction of the vehicle, and the support portion (STP) is inside the side member. It is arranged behind the intersection of two adjacent wall portions of the shock absorbing member, and when a collision load is applied to the shock absorbing member, it supports the rear end surface of the shock absorbing member. It is a device.

At the time of a collision of a vehicle to which the shock absorbing device according to the present invention is applied, the outer peripheral surface of the fastening member comes into contact with the front side portion of the inner peripheral surface of the through hole of the shock absorbing member, and the contact portion causes a collision load. A part of the collision load is received, and the rear end surface of the shock absorbing member abuts on the support portion, and the abutting portion receives a part of the collision load. Therefore, it is possible to prevent the collision load from being concentrated on the inner peripheral surface of the through hole of the shock absorbing member. That is, the collision load is dispersed on the inner peripheral surface of the through hole and the curved portion. Therefore, the shock absorbing performance of the shock absorbing member can be fully exhibited.

Further, another feature of the present invention is that the support portion (40C) is a tubular portion arranged in the main body portion of the shock absorbing member and into which the fastening member is inserted, and is in the longitudinal direction of the tubular portion. The end face and the inner peripheral surface of the main body of the shock absorbing member are in contact with each other, and the surface roughness of the contact surface between the end of the tubular portion and the shock absorbing member is the inner circumference of the shock absorbing member. It is a shock absorber that is set larger than the other parts of the surface.

Since the surface roughness of the contact portion between the shock absorbing member and the tubular portion is set to be relatively large, the friction between the two is relatively large. Therefore, it can be considered that the shock absorbing member and the tubular portion are formed substantially integrally. At the time of a collision of a vehicle to which the shock absorbing device configured in this way is applied, in addition to the inner peripheral surface of the through hole of the shock absorbing member, the outer peripheral surface of the fastening member comes into contact with the inner peripheral surface of the tubular portion. A collision load is received by the contact portion. Therefore, it is possible to prevent the collision load from being concentrated on the inner peripheral surface of the through hole of the shock absorbing member. That is, the collision load is dispersed on the inner peripheral surface of the through hole and the inner peripheral surface of the tubular portion. Therefore, the shock absorbing performance of the shock absorbing member can be fully exhibited.

It is a top view of the vehicle to which the shock absorbing device which concerns on this invention is applied. It is an exploded perspective view of a shock absorber. It is an exploded perspective view of a side member. It is an exploded perspective view which looked at the shock absorbing member from the diagonally left front. It is an exploded perspective view which looked at the shock absorbing member from the diagonally left rear view. It is sectional drawing which is perpendicular to the vehicle front-rear direction of the main body part of a shock absorbing member. It is a top view of the shock absorbing member. It is sectional drawing which is perpendicular to the longitudinal direction of a bumper reinforcement. It is a perspective view which looked at the collar from the diagonally left front. It is a perspective view which shows the process of inserting a collar into a shock absorbing member. It is sectional drawing which is perpendicular to the vehicle width direction of a shock absorbing member and a collar. It is a perspective view which shows the process of inserting and fastening a shock absorbing member into a side member. It is sectional drawing which is perpendicular to the vehicle height direction of a shock absorbing member, a collar and a side member, and shows the sectional view which includes the central axis of each through hole arranged coaxially. It is sectional drawing which is perpendicular to the vehicle width direction of a shock absorbing member, a collar and a side member. It is a perspective view which shows the process of fastening a bumper reinforcement to a shock absorbing member. It is sectional drawing which is perpendicular to the vehicle width direction of the shock absorbing member, the collar and the side member in the shock absorbing device to which the collar which concerns on the modification of 1st Embodiment of this invention is applied. It is an exploded perspective view of the shock absorbing device which concerns on 2nd Embodiment of this invention. It is a perspective view which saw the shock absorbing member from the diagonally left front. It is a perspective view which looked at the shock absorbing member from the diagonally left rear view. It is sectional drawing which is perpendicular to the vehicle front-rear direction of the main body part of a shock absorbing member. It is a cross-sectional view perpendicular to the vehicle width direction of the shock absorbing member, and is an enlarged cross-sectional view of the peripheral portion of the through hole. It is sectional drawing which is perpendicular to the vehicle height direction of a shock absorbing member, a collar and a side member, and shows the sectional view which includes the central axis of each through hole arranged coaxially. It is a perspective view which shows the process of fastening a shock absorbing member to a side member, and the step of fastening a bumper reinforcement to a shock absorbing member. It is an exploded perspective view of the shock absorbing device which concerns on 3rd Embodiment of this invention. It is a perspective view which looked at the side member diagonally from the front left. It is a perspective view which saw the shock absorbing member from the diagonally left front. It is a perspective view which looked at the shock absorbing member from the diagonally left rear view. It is sectional drawing which is perpendicular to the vehicle front-rear direction of the main body part of a shock absorbing member. It is sectional drawing which is perpendicular to the vehicle width direction of a shock absorbing member, a collar and a side member. It is a perspective view which shows the process of fastening a shock absorbing member to a side member, and the step of fastening a bumper reinforcement to a shock absorbing member. It is an exploded perspective view of the shock absorbing device which concerns on 4th Embodiment of this invention. It is a perspective view which saw the shock absorbing member from the diagonally left front. It is a perspective view which looked at the shock absorbing member from the diagonally left rear view. It is sectional drawing which is perpendicular to the vehicle front-rear direction of the main body part of a shock absorbing member. It is sectional drawing which is perpendicular to the vehicle width direction of a shock absorbing member, a collar and a side member. It is a perspective view which shows the process of fastening a shock absorbing member to a side member, and the step of fastening a bumper reinforcement to a shock absorbing member.

(First Embodiment)
The shock absorbing device 1 according to the first embodiment of the present invention will be described. As shown in FIG. 1, the shock absorbing device 1 is applied to the vehicle V, and when an object collides with the front end portion of the vehicle V, the shock absorbing device 1 absorbs the impact caused by the collision. As shown in FIG. 2, the shock absorbing device 1 includes a pair of left and right side members 10 _L and 10 _R , a pair of left and right shock absorbing members 20 _L and 20 _R , a bumper reinforcement 30 and collars 40 and 40.

Next, the configurations of the side members 10 _L and 10 _R will be described. The side members 10 _L and 10 _R are arranged at intervals in the vehicle width direction. That is, the side member 10 _L is arranged on the left side of the vehicle V, and the side member 10 _R is arranged on the right side of the vehicle V (see FIG. 1). The side member 10 _L and the side member 10 _R are symmetrical. Therefore, the configuration of the side member 10 _L will be described below, and the description of the side member 10 _R will be omitted.

The side member 10 _L is formed in a square tubular shape extending in the front-rear direction of the vehicle. The front end of the side member 10 _{L is open.} As shown in FIG. 3, the side member 10 _L is composed of a groove-shaped portion 11 and a groove lid portion 12 extending in the front-rear direction of the vehicle, respectively. The groove-shaped portion 11 is open to the left (outside in the vehicle width direction). That is, the groove width direction coincides with the vehicle height direction, and the groove depth direction coincides with the vehicle width direction. The groove-shaped portion 11 has a bottom wall portion 111 and a pair of upper and lower side wall portions 112 and 113. The plate thickness direction of the bottom wall portion 111 coincides with the vehicle width direction. The side wall portion 112 and the side wall portion 113 extend to the left from the upper end and the lower end of the bottom wall portion 111, respectively. The plate thickness directions of the side wall portion 112 and the side wall portion 113 coincide with the vehicle height direction. _{A flange portion F 112} and a flange portion F ₁₁₃ are formed at the right end portions of the side wall portion 112 and the side wall portion 113, respectively. The flange portion F ₁₁₂ extends upward from the left end of the side wall portion 112. Further, the flange portion F ₁₁₃ extends downward from the left end of the side wall portion 113.

The groove lid portion 12 is a plate-shaped portion perpendicular to the vehicle width direction. The upper end portion and the lower end portion on the right surface of the groove lid portion 12 are welded to _{the flange portion F 112} and the flange portion F _{113 of the groove shape portion 11.}

_{A through hole HU 111} and a through hole HL ₁₁₁ are formed at the front end of the bottom wall portion 111. The through hole HL ₁₁₁ is located below the through hole HU _{111. Further, a through hole HU 12} and a through hole HL ₁₂ are formed at the front end portion of the groove lid portion 12. The through hole HL ₁₂ is located below the through hole HU _12. The inner diameters of the through holes HU ₁₁₁ , HL ₁₁₁ , HU ₁₂ , and HL _{12 are the same.} The through hole HU ₁₁₁ and the through hole HU ₁₂ are coaxially arranged. That is, the central axes of the through hole HU ₁₁₁ and the through hole HU _{12 overlap.} Further, the through hole HL ₁₁₁ and the through hole HL ₁₂ are coaxially arranged.

Next, the configurations of the shock absorbing members 20 _L and 20 _R will be described. The shock absorbing member 20 _L and the shock absorbing member 20 _R are symmetrical. Therefore, the configuration of the shock absorbing member 20 _L will be described below, and the description of the shock absorbing member 20 _R will be omitted.

The shock absorbing member 20 _L has a main body portion 21 and a bracket portion 22 as shown in FIGS. 4A and 4B. The main body 21 is formed in a square cylinder shape extending in the front-rear direction of the vehicle. That is, as shown in FIG. 5, the outer shape of the cross section of the main body 21 perpendicular to the vehicle front-rear direction is rectangular. The front end and the rear end of the main body 21 are open. The rear end surface of the main body 21 is perpendicular to the vehicle front-rear direction. On the other hand, the front end surface of the main body 21 is inclined with respect to the front-rear direction of the vehicle. That is, the outer portion (left end portion) of the front end surface is located behind the inner portion (right end portion) in the vehicle width direction (see FIG. 6).

Specifically, as shown in FIG. 5, the main body portion 21 has an upper wall portion 211, a lower wall portion 212, a left wall portion 213, and a right wall portion 214. The upper wall portion 211 and the lower wall portion 212 are formed in a plate shape perpendicular to the vehicle height direction. The lower wall portion 212 is arranged below the upper wall portion 211. In the plan view of the main body 21, the upper wall 211 and the lower wall 212 have a substantially trapezoidal shape (see FIG. 6). That is, the rear end surfaces of the upper wall portion 211 and the lower wall portion 212 are perpendicular to the vehicle front-rear direction. On the other hand, the front end faces of the upper wall portion 211 and the lower wall portion 212 are inclined with respect to the front-rear direction of the vehicle. That is, the left end portion of the front end surface of the upper wall portion 211 and the lower wall portion 212 is located behind the right end portion. The inclination angles of the front end faces of the upper wall portion 211 and the lower wall portion 212 are determined based on the shape of the bumper reinforcement 30 described later.

The left wall portion 213 and the right wall portion 214 are formed in a plate shape perpendicular to the vehicle width direction. The left wall portion 213 is extended along the left ends of the upper wall portion 211 and the lower wall portion 212. The upper end of the left wall 213 is connected to the left end of the upper wall 211, and the lower end of the left wall 213 is connected to the left end of the lower wall 212. Further, the right wall portion 214 is extended along the right ends of the upper wall portion 211 and the lower wall portion 212. The upper end of the right wall 214 is connected to the right end of the upper wall 211, and the lower end of the right wall 214 is connected to the right end of the lower wall 212.

_{A through hole HU 213} and a through hole HL ₂₁₃ are formed at the rear end of the left wall portion 213 (see FIGS. 4A and 4B). The through hole HL ₂₁₃ is located below the through hole HU _{213. Further, a through hole HU 214} and a through hole HL ₂₁₄ are formed at the rear end of the right wall portion 214. The through hole HL ₂₁₄ is located below the through hole HU _214. The inner diameters of the through holes HU ₂₁₃ , HL ₂₁₃ , HU ₂₁₄ , and HL ₂₁₄ are the same as the inner diameters of the through holes HU ₁₁₁ , HL ₁₁₁ , HU ₁₂ , and HL ₁₂ . The through hole HU ₂₁₃ and the through hole HU ₂₁₄ are coaxially arranged. Further, the through hole HL ₂₁₃ and the through hole HL ₂₁₄ are coaxially arranged. The through holes HU ₂₁₃ , HL ₂₁₃ , HU ₂₁₄ , and HL ₂₁₄ correspond to the through holes HU ₁₂ , HL ₁₂ , HU ₁₁₁ , and HL ₁₁₁ , respectively.

Further, ribs 215U and 215L are formed inside the main body 21 (see FIG. 5). The ribs 215U and 215L are formed in a plate shape perpendicular to the vehicle height direction. The rib 215L is located below the rib 215U. The left ends of the ribs 215U and 215L are connected to the left wall portion 213, and the right ends of the ribs 215U and 215L are connected to the right wall portion 214. The distance between the upper wall portion 211 and the rib 215U in the vehicle height direction is equal to the distance between the lower wall portion 212 and the rib 215L in the vehicle height direction. _{The position of the rib 215U in the vehicle height direction is set slightly below the center of the through holes HU 213} and HU ₂₁₄ , and the position of the rib 215L in the vehicle height direction is set below the center of the through holes HL ₂₁₃ and HL _214. It is set slightly upward (see FIG. 9B). The front end faces of the ribs 215U and 215L are located in the same plane as the front end faces of the upper wall portion 211 and the lower wall portion 212. The rear end faces of the ribs 215U and 215L are perpendicular to the vehicle front-rear direction. The positions of the rear end surfaces of the ribs 215U and 215L in the vehicle front-rear direction are set slightly forward of the front _{ends of the through holes HU 213} , HL ₂₁₃ , HU ₂₁₄ , and HL _214.

The bracket portion 22 has a lid portion 221 and a flange portion 222U and a flange portion 222L (see FIGS. 4A and 4B). The lid portion 221 is a rectangular flat plate portion, which is welded to the front end surface of the main body portion 21 to close the front end of the main body portion 21. The outer peripheral edge portion of the lid portion 221 projects slightly outward from the outer peripheral surface of the main body portion 21. The flange portion 222U is a flat plate portion extending forward from the upper end portion of the lid portion 221. Further, the flange portion 222L is a flat plate portion extending forward from the lower end portion of the lid portion 221. The flange portion 222U and the flange portion 222L are perpendicular to the vehicle height direction. _{Through holes H 22} are formed at the right end and the left end of the flange portion 222U, respectively. _{Through holes H 22} are formed at the right end and the left end of the flange portion 222L, respectively. The bumper reinforcement 30 described below is inserted between the flange portion 222U and the flange portion 222L.

Next, the configuration of the bumper reinforcement 30 will be described. The bumper reinforcement 30 is formed in a square tubular shape extending in the vehicle width direction. As shown in FIG. 7, the outer shape of the cross section perpendicular to the longitudinal direction of the bumper reinforcement 30 exhibits a rectangle extending in the vehicle height direction. The shape and size of the cross section of the bumper reinforcement 30 are constant from one end to the other end in the longitudinal direction. The bumper reinforcement 30 is curved in a bow shape in a plan view (see FIG. 1). However, the intermediate portion of the bumper reinforcement 30 in the vehicle width direction is curved, and the left end and the right end of the bumper reinforcement 30 are formed on the front end surfaces _{of the shock absorbing member 20 L} and the shock absorbing member 20 _R. It is formed in a straight line along the front surface of the lid portion 221). The curvature of the intermediate portion of the bumper reinforcement 30 is determined according to the design (shape of the bumper cover) of the front end portion of the vehicle.

Next, the configuration of the color 40 will be described. _{The collars 40 and 40 are inserted into the shock absorbing members 20 L} and 20 _R , respectively, as will be described in detail later, and the main body when the shock absorbing members 20 _L and 20 _R and the side members 10 _L and 10 _{R are fastened, respectively.} The bending of the rear end portion of the portion 21 is regulated. As shown in FIG. 8, the collar 40 has tubular portions 41U and 41L and a connecting portion 42. The tubular portions 41U and 41L are extended in the vehicle width direction.

The tubular portion 41U is formed in a substantially rectangular parallelepiped shape extending in the vehicle width direction. _{The tubular portion 41U has a through hole H 41U} penetrating between both end faces in the extending direction thereof. The inner diameter of the through hole H _{41U is the same as} the inner diameter of the through holes HU ₂₁₃ and HU ₂₁₄ . The upper surface ST _41U and the lower surface SB _41U of the tubular portion 41U are perpendicular to the vehicle height direction, and the front SF _41U and the rear surface SR _41U of the tubular portion 41U are perpendicular to the vehicle front-rear direction. _{A convex portion P 41U} extending in the vehicle width direction is formed at the rear portion of the upper surface ST _41U. A pair of upper and lower recesses RU _41U and RL _41U extending in the vehicle width direction are formed on the front SF _41U and the rear SR _{41U, respectively.}

The tubular portion 41L is arranged below the tubular portion 41U. The tubular portion 41U and the tubular portion 41L are vertically symmetrical. That is, the tubular portion 41L is formed in a substantially rectangular parallelepiped shape extending in the vehicle width direction. _{The tubular portion 41L has a through hole H 41L} penetrating between both end faces in the extending direction thereof. The inner diameter of the through hole H _{41L is the same as} the inner diameter of the through holes HL ₂₁₃ and HL ₂₁₄ . The upper surface ST _41L and the lower surface SB _41L of the tubular portion 41L are perpendicular to the vehicle height direction, and the front SF _41L and the rear surface SR _41L of the tubular portion 41L are perpendicular to the vehicle front-rear direction. _{A convex portion P 41L} extending in the vehicle width direction is formed at the rear portion of the lower surface SB _41L. A pair of upper and lower recesses RU _41L and RL _41L extending in the vehicle width direction are formed on the front SF _41L and the rear SR _{41L, respectively.}

The connecting portion 42 is provided between the tubular portion 41U and the tubular portion 41L, and connects the tubular portion 41U and the tubular portion 41L. The connecting portion 42 is composed of a pair of front and rear plate-shaped portions 421 and 422. The plate-shaped portions 421 and 422 are perpendicular to the vehicle front-rear direction. The plate-shaped portion 422 is arranged behind the plate-shaped portion 421. A space is provided between the plate-shaped portion 421 and the plate-shaped portion 422. The upper end of the plate-shaped portion 421 is connected to the front end portion of _{the lower surface SB 41U of the tubular portion 41U.} The lower end of the plate-shaped portion 421 is connected to the front end portion of _{the upper surface ST 41L of the tubular portion 41L.} Further, the upper end of the plate-shaped portion 422 is connected to the rear end portion of _{the lower surface SB 41U of the tubular portion 41U.} The lower end of the plate-shaped portion 422 is connected to the rear end portion of _{the upper surface ST 41L of the tubular portion 41L.}

The dimension of the collar 40 in the vehicle height direction ( _{distance between the upper end of the convex portion P 41U} and the lower end of the convex portion P _41L ) is the dimension in the vehicle height direction of the internal space of the shock absorbing members 20 _L and 20 _{R (upper wall).} The distance between the lower surface of the portion 211 and the upper surface of the lower wall portion 212) is set to be slightly smaller. Further, the dimension of the collar 40 in the vehicle width direction _{is slightly smaller than the dimension of the internal space of the shock absorbing members 20 L} and 20 _R in the vehicle width direction (distance between the left surface of the right wall portion 214 and the right surface of the left wall portion 213). It is set small. The collar 40 corresponds to the support portion of the present invention.

Next, the procedure for assembling the shock absorbing device 1 will be described. First, as shown in FIG. 9A, the collar 40 is inserted from the rear end of the shock absorbing member ₂₀ L _{(20 R)} in the shock absorbing member ₂₀ L _{(20 R)} within. In this state, as shown in FIG. 9B, the through holes HU ₂₁₃ , H _41U , and HU ₂₁₄ are coaxially arranged, and the through holes HL ₂₁₃ , H _41L , and HL ₂₁₄ are coaxially arranged. Further, in this state, the rear end portion of the rib 215U _{has entered the recess RL 41U} , and the rear end portion of the rib 215L has entered the recess RU _41U .

Next, as shown in FIG. 10A, the rear end portion of the shock absorbing member 20 _L (20 _{R ) is inserted into the side member 10 L} (10 _R ) from the front end of the side member 10 _L (10 _R). .. In this state, as shown in FIGS. 10B and 10C, the through holes HU ₁₁₁ , HU ₂₁₄ , H _41U , HU ₂₁₃ , and HU ₁₂ are coaxially arranged. Further, through holes HL ₁₁₁ , HL ₂₁₄ , H _41L , HL ₂₁₃ , and HL ₁₂ are coaxially arranged. _{Next, the bolt BT1 is inserted into the through holes HU 12} , HU ₂₁₃ , H _41U , HU _214U , and HU ₁₁₁ from the left side (or right side) of the side member 10 _L (10 _R ) (see FIG. 10A). The tip of the bolt BT1 projects to the right (or left) _{side of the side member 10 L} (10 _R). Then, the nut NT1 is fastened to the tip of the bolt BT1. _Further , the bolt BT1 is inserted into _{the through holes HL 12} , HL ₂₁₃ , H _41L , HL 214U, and HL ₁₁₁ from the left side (or right side) of the side member 10 _L (10 _R). The tip of the bolt BT1 projects to the right (or left) _{side of the side member 10 L} (10 _R). Then, the nut NT1 is fastened to the tip of the bolt BT1. As a result, the shock absorbing member 20 _L (20 _R ) is fixed to _{the side member 10 L} (10 _R). That is, the movement of the shock absorbing member 20 _L (20 _R ) in the vehicle front-rear direction with respect to the _{side member 10 L} (10 _{R) is restricted.} When the nut NT1 is fastened to the tip of the bolt BT1, the collar 40 inserted inside the _{shock absorbing member 20 L} (20 _{R ) causes the front end of the side member 10 L} (10 _R ) and the shock absorbing member. The deflection of the wall at the rear end of 20 _L (20 _{R) is regulated.}

Next, as shown in FIG. 11, the left end portion of the bumper reinforcement 30 is inserted between the flange portion 222U and the flange portion 222L of the bracket portion 22 of _{the shock absorbing member 20 L , and the shock absorbing member 20 R} is inserted. The right end portion of the bumper reinforcement 30 is inserted between the flange portion 222U and the flange portion 222L of the bracket portion 22. Finally, a bolt BT2 is inserted into each through hole H ₂₂ and its tip is fastened to nuts (not shown) provided at the left and right ends of the bumper reinforcement 30.

When an object collides with the front end portion of the vehicle V to which the shock absorbing device 1 configured as described above is applied, the collision load acts on the front end portion of the _{shock absorbing member 20 L} (20 _R). As a result, when the shock absorbing member 20 _L (20 _R ) is pressed backward, the outer peripheral surface of the bolt BT1 is formed on the front side portion of the inner peripheral surfaces of _{the through holes HU 213} , HL ₂₁₃ , HU ₂₁₄ , and HL _214. It abuts and receives a part of the collision load on the part.

Further, the rear end surfaces of the ribs 215U and 215L come _{into contact with the bottom surfaces (frontward facing surfaces) of the recess RL 41U} and the recess RU _41L , respectively, and a part of the collision load is received by the portions. Here, as described above, the rib 215U is located slightly below the center of the _{through hole H 41U} , and the rib 215L is located slightly above the center of the _{through hole H 41L.} Therefore, a rotational moment acts counterclockwise on the tubular portion 41U in FIG. 10C, and a rotational moment acts clockwise on the tubular portion 41L in FIG. 10C. However, since the tubular portion 41U and the tubular portion 41L are connected by the connecting portion 42, even if the above-mentioned rotational moment acts, the tubular portion 41U and the tubular portion 41L still have their central axes. Does not rotate around. Even if the connecting portion 42 breaks (or buckles), the convex portion P _41U and the convex portion P _41L hit the inner side surface of the main body portion 21 (the lower surface of the upper wall portion 211 and the upper surface of the lower wall portion 212), respectively. In contact with each other, the rotation of the tubular portion 41U and the tubular portion 41L around the central axis (bolt BT1) is restricted.

Further, for example, even if a bending moment that bends the intermediate portion of the collar 40 and the bolt BT1 in the longitudinal direction acts, the left end surface and the right end surface of the collar 40 are the inner side surfaces of the main body portion 21 (the left surface of the right wall portion 214). And the right side of the left wall portion 213), respectively, and the above-mentioned bending is regulated. Therefore, the collision load is distributed and received in the front side portion of the inner peripheral surfaces of _{the through holes HU 213} , HL ₂₁₃ , HU ₂₁₄ , and HL _{214 , as well as the recess RL 41U} and the recess RU _41L. That is, it is possible to prevent the collision load from being _{concentrated on the through holes HU 213} , HL ₂₁₃ , HU ₂₁₄ , and HL _{214. Therefore, it is possible to avoid a situation in which the collision load is concentrated on the peripheral portions of the through holes HU 213} , HL ₂₁₃ , HU ₂₁₄ , and HL ₂₁₄ immediately after the collision and the relevant portions are destroyed, so that the shock absorption performance is not sufficiently exhibited. That is, the front end portion and the intermediate portion of the main body portion 21 are the vehicle while being supported by the _{side members 10 L} and 10 _R without the rear end portion of the main body portion 21 of the shock absorbing members 20 _L and 20 _{R being significantly destroyed.} Compresses and deforms in the front-back direction. As described above, according to the present embodiment, the shock absorbing performance of _{the shock absorbing members 20 L} and 20 _{R can be sufficiently exhibited.}

In the shock absorbing device 1, the tubular portion 41U and the tubular portion 41L are connected by the connecting portion 42, but as shown in FIG. 12, the connecting portion 42 may be omitted. In this case, similarly to the shock absorbing device 1, a rotational moment acts on the tubular portion 41U counterclockwise in FIG. 12, and a rotational moment acts on the tubular portion 41L clockwise in FIG. .. Then, the convex portion P _41U and the convex portion P _41L abut on the inner side surface of the main body portion 21 (the lower surface of the upper wall portion 211 and the upper surface of the lower wall portion 212), respectively, and the center of the tubular portion 41U and the tubular portion 41L. Rotation around the shaft (bolt BT1) is regulated. Therefore, the same effect as that of the shock absorbing device 1 can be obtained.

(Second Embodiment)
Next, the shock absorbing device 1A according to the second embodiment of the present invention will be described. In the shock absorbing device 1A, as shown in FIG. 13, the shock absorbing member ₂₀ L of the first embodiment, 20 different shock absorption and _R member _20A L, is 20A _R used. Further, in the shock absorbing device 1A, a color 40A different from the color 40 of the first embodiment is used. Other configurations of the shock absorber 1A (side members 10 _L , 10 _R and bumper reinforcement 30) are the same as in the first embodiment.

Then, the shock-absorbing member _20A L, the configuration of 20A _R will be described. The shock absorbing member 20A _L and shock-absorbing member 20A _R, is symmetrical. Therefore, the following describes the structure of the shock absorbing member 20A _L, it will not be described shock absorbing member 20A _R.

Shock absorbing member 20A _L, as shown in FIGS. 14A and 14B, a body portion 21A and the bracket 22. Since the configuration of the bracket portion 22 is the same as that of the first embodiment, the configuration of the main body portion 21A will be described below, and the description of the bracket portion 22 will be omitted.

The outer shape of the main body 21A is the same as that of the main body 21 of the first embodiment. That is, as shown in FIG. 15, the main body portion 21A has an upper wall portion 211A, a lower wall portion 212A, a left wall portion 213A, and a right wall portion 214A. However, unlike the first embodiment, the rib is not formed in the main body portion 21A.

Further, similarly to the main body portion 21 of the first embodiment, a through hole HU _213A and a through hole HL _213A are formed at the rear end portion of the left wall portion 213A (see FIGS. 14A and 14B). _{Further, a through hole HU 214A} and a through hole HL _214A are formed at the rear end of the right wall portion 214A. Through holes HU _213A , HL _213A , HU _214A , and HL _214A correspond to through holes HU ₁₂ , HL ₁₂ , HU ₁₁₁ , and HL ₁₁₁ , respectively.

Further, as shown in FIGS. 15 and 16, the peripheral edges _{of the through holes HU 213A} , HL _213A , HU _214A , and HL _{214A are burred.} Hereinafter, the portions that have entered the main body portion 21A will be referred to as peripheral portions BU _213A , BL _213A , BU _214A , and BL _214A . The peripheral portions BU _213A , BL _213A , BU _214A , and BL _214A correspond to the support portions of the present invention.

Next, the configuration of the color 40A will be described. The collar 40A is a cylindrical member extending in the vehicle width direction. The inner diameter of the collar 40A is slightly larger than the outer diameter of the tips of the _{peripheral portions BU 213A} , BL _213A , BU _214A , and BL _214A. Vehicle widthwise dimension of the collar 40A is, the shock absorbing member _20A L, is set slightly smaller than the vehicle width dimension of the inner space of 20A _R (distance between the left surface and the right surface of the left wall 213A of the right wall 214A) ing. Both ends of the upper collar 40A in the longitudinal direction _{are fitted into the peripheral edges BU 213A} and BU _214A , respectively, and both ends of the lower collar 40A in the longitudinal direction _{are fitted into the peripheral edges BL 213A} and BL _214A , respectively (see FIG. 17). ).

Rear end of the of the thus constructed shock absorbing member _20A L _{(20A R)} is inserted into the side members ₁₀ L in the front end of (10 _R). In this state, as shown in FIG. 17, the through holes HU ₁₁₁ , HU _214A , HU _213A , HU ₁₂ and the upper collar 40A are coaxially arranged. Further, the through holes HL ₁₁₁ , HL _214A , HL _213A , HL ₁₂ and the lower collar 40A are coaxially arranged. Next, as shown in FIG. 18, similarly to the first embodiment, with bolts BT1 and nuts NT1, side members ₁₀ L _{(10 R)} and is fastened to the shock-absorbing member _20A L _{(20A R)} .. Note that when the nut NT1 is fastened to the distal end of the bolt BT1, by an impact absorbing member _20A L _{(20A R)} color 40A which is inserted into the front end and the shock absorption of the side members ₁₀ L _{(10 R)} deflection of the wall of the rear end portion of the member _20A L _{(20A R)} is regulated. Similarly to the first embodiment, with bolts BT2, bumper reinforcement 30 is assembled to the front end of the shock absorbing member _20A L _{(20A R).}

When the object to the front end of the vehicle V constructed shock absorbing device 1A is applied as described above collides, the collision load acts on the front end of the shock absorbing member _20A L (20A _R). Thus, when the shock absorbing member _20A L _{(20A R)} is pressed to the rear, through hole _{HU 213A, HL 213A, HU 214A} , in addition to the front portion of the inner peripheral surface of the _{HL 214A,} the peripheral edge _{BU 213A,} The outer peripheral surface of the bolt BT1 abuts on the front side portion of the inner peripheral surfaces of the BL _213A , BU _214A , and BL _{214A, and a part of the collision load is received on the portion.} Therefore, the area where the collision load can be received is larger than that when all the collision loads are received on the inner peripheral surfaces of the through holes HU _213A , HL _213A , HU _214A , and HL _214A. That is, the collision load is distributed to the inner peripheral surfaces of the peripheral portions BU _213A , BL _213A , BU _214A , and BL _{214A in addition to the inner peripheral surfaces of the through holes HU 213A} , HL _213A , HU _214A , and HL _{214A. Therefore, it is possible to avoid a situation in which the collision load is concentrated on the peripheral portions of the through holes HU 213A} , HL _213A , HU _214A , and HL _214A immediately after the collision and the relevant portions are destroyed, so that the shock absorption performance is not sufficiently exhibited. That is, the shock absorbing member _20A L, while being supported by the no side members ₁₀ L, 10 _R to the rear end portion of the main body portion 21A of 20A _R is destroyed large, front and middle portion of the main body portion 21A in the vehicle Compresses and deforms in the front-back direction. Thus, according to this embodiment, the shock-absorbing member 20A _L, shock absorbing capacity of 20A _R can be sufficiently exhibited.

(Third Embodiment)
Next, the shock absorbing device 1B according to the third embodiment of the present invention will be described. In the shock absorbing device 1B, as shown in FIG. 19, the side members ₁₀ L of the first embodiment, 10 different from the _R side member _10B L, 10B _R is used. Further, the shock absorbing device 1B, the shock absorbing member ₂₀ L of the first embodiment, 20 different shock absorption and _R member _20B L, is 20B _R used. Further, in the shock absorbing device 1B, the same collar 40A as in the second embodiment is used. The other configuration (bumper reinforcement 30) of the shock absorber 1B is the same as that of the first embodiment.

Then, the side members _10B L, the configuration of 10B _R will be described. The side members 10B _L and the side members 10B _R, is symmetrical. Therefore, the description below, the configuration of the side members 10B _L, omitted side members 10B _R.

Side member 10B _L, as shown in FIG. 20, having a rectangular tube-shaped body portion MB consisting of interposition portion 11 and the Mizofuta portion 12 of the first embodiment. Side members 10B _L, unlike the side members 10 _L, further comprising a stopper STP. The stopper STP is a block-shaped member (or a square bar-shaped member), and is joined to a corner portion of the inner wall surface of the main body portion MB. The stopper STP is arranged slightly behind _{the through holes HU 111} , HL ₁₁₁ , HU ₁₂ , and HL ₁₂ of the main body MB. The stopper STP corresponds to the support portion of the present invention.

Then, the shock-absorbing member _20B L, the configuration of 20B _R will be described. The impact-absorbing member 20B _L and shock-absorbing member 20B _R, is symmetrical. Therefore, the following describes the structure of the shock absorbing member 20B _L, it will not be described shock absorbing member 20B _R.

Shock absorbing member 20B _L, as shown in FIGS. 21A and 21B, it has a body portion 21B and the bracket unit 22. Since the configuration of the bracket portion 22 is the same as that of the first embodiment, the configuration of the main body portion 21B will be described below, and the description of the bracket portion 22 will be omitted.

The outer shape of the main body 21B is the same as that of the main body 21 of the first embodiment. That is, as shown in FIG. 22, the main body portion 21B has an upper wall portion 211B, a lower wall portion 212B, a left wall portion 213B, and a right wall portion 214B. However, unlike the first embodiment, the rib is not formed in the main body portion 21B.

Further, similarly to the main body portion 21 of the first embodiment, a through hole HU _213B and a through hole HL _213B are formed at the rear end portion of the left wall portion 213B (see FIGS. 21A and 21B). _{Further, a through hole HU 214B} and a through hole HL _214B are formed at the rear end of the right wall portion 214B. The through holes HU _213B , HL _213B , HU _214B , and HL _214B correspond to the through holes HU ₁₂ , HL ₁₂ , HU ₁₁₁ , and HL ₁₁₁ , respectively. Unlike the second embodiment, the _{peripheral portions of the through holes HU 213B} , HL _213B , HU _214B , and HL _214B are not processed. That is, the right surface of the left wall portion 213B (inner surface of the main body portion 21B) and the left surface of the right wall portion 214B (inner surface of the main body portion 21B) are flat.

The rear end of the of the thus constructed shock absorbing member _20B L _{(20B R)} color 40A, 40A are inserted. In this state, the through hole HU _213B , the upper collar 40A, and the through hole HU _214B are coaxially arranged, and the through hole HL _213B , the lower collar 40A, and the through hole HL _214B are coaxially arranged. Then, the rear end portion of the impact-absorbing member _20B L _{(20B R)} is inserted into the front end of the side member _10B L _{(10B R).} In this state, as shown in FIG. 23, the through holes HU ₁₂ , HU _213B , HU _214B , HU ₁₁₁ and the upper collar 40A are coaxially arranged. Further, the through holes HL ₁₂ , HL _213B , HL _214B , HL ₁₁₁ and the lower collar 40A are coaxially arranged. The rear end surface of the body portion 21 of the shock-absorbing member _20B L _{(20B R)} is in contact with the front end surface of the stopper STP.

Next, as shown in FIG. 24, similarly to the first embodiment, with bolts BT1 and nuts NT1, side member _10B L and (10B _R) is fastened to the shock-absorbing member _20B L _{(20B R)} .. Similarly to the first embodiment, with bolts BT2, bumper reinforcement 30 is assembled to the front end of the shock-absorbing member _20B L _{(20B R).} Note that when the nut NT1 is fastened to the distal end of the bolt BT1, by a collar 40A which are inserted into the shock-absorbing member _20B L _{(20B R),} front and shock absorbing side members _10B L _{(10B R)} deflection of the wall of the rear end portion of the member _20B L _{(20B R)} is regulated.

When the object to the front end of the vehicle V constructed shock absorbing device 1B is applied as described above collides, the collision load acts on the front end portion of the impact-absorbing member _20B L (20B _R). Thus, when the shock absorbing member _20B L _{(20B R)} is pressed rearward, contact holes _{HU 213B, HL 213B, HU 214B} , bolts outer peripheral surface of the front portion of the inner peripheral surface of the _{HL 214B} are those , A part of the collision load is received in the relevant part. Further, a corner portion of the rear end surface of the main body portion 21B (the rear end portion of the ridgeline of the main body portion 21B (the portion where adjacent wall portions intersect with each other)) abuts on the stopper STP, and a part of the partial collision load is applied. Can be received. Therefore, the area where the collision load can be received is larger than that when all the collision loads are received on the inner peripheral surfaces of the through holes HU _213B , HL _213B , HU _214b , and HL _214B. That is, the collision load is distributed to the front end surface of the stopper STP in addition to the inner peripheral surfaces of _{the through holes HU 213B} , HL _213B , HU _214B , and HL _{214B. Therefore, it is possible to avoid a situation in which the collision load is concentrated on the peripheral portions of the through holes HU 213B} , HL _213B , HU _214B , and HL _214B immediately after the collision and the relevant portions are destroyed, so that the shock absorption performance is not sufficiently exhibited. That is, the shock-absorbing member _20B L, 20B _R of the main body portion 21B rear end portion is larger destroyed is that no side member _10B L of, in the state of being supported by the 10B _R, the front end portion and the intermediate portion of the main body portion 21B is a vehicle Compresses and deforms in the front-back direction. Thus, according to this embodiment, the shock-absorbing member 20B _L, shock absorbing capacity of 20B _R can be sufficiently exhibited.

(Fourth Embodiment)
Next, the shock absorbing device 1C according to the fourth embodiment of the present invention will be described. In the shock absorbing device 1C, as shown in FIG. 25, the shock absorbing member ₂₀ L of the first embodiment, 20 different shock absorption and _R member _20C L, is 20C _R used. Further, in the shock absorbing device 1C, a color 40C different from that of the first embodiment is used. Other configurations of the shock absorber 1C (side members 10 _L , 10 _R and bumper reinforcement 30) are the same as those in the first embodiment.

Then, the shock-absorbing member _20C L, the configuration of 20C _R will be described. The shock absorbing member 20C _L and the shock absorbing member 20C _R are symmetrical. Therefore, the configuration of the shock absorbing member 20C _L will be described below, and the description of the shock absorbing member 20C _R will be omitted.

Shock absorbing member 20C _L, as shown in FIGS. 26A and 26B, a body portion 21C and the bracket unit 22. Since the configuration of the bracket portion 22 is the same as that of the first embodiment, the configuration of the main body portion 21C will be described below, and the description of the bracket portion 22 will be omitted.

The outer shape of the main body 21C is the same as that of the main body 21 of the first embodiment. That is, as shown in FIG. 27, the main body portion 21C has an upper wall portion 211C, a lower wall portion 212C, a left wall portion 213C, and a right wall portion 214C. However, unlike the first embodiment, no rib is formed in the main body 21C.

Further, similarly to the main body portion 21 of the first embodiment, a through hole HU _213C and a through hole HL _213C are formed at the rear end portion of the left wall portion 213C (see FIGS. 26A and 26B). _{Further, a through hole HU 214C} and a through hole HL _214C are formed at the rear end of the right wall portion 214C. _Through holes HU 213C, HL _213C , HU _214C , and HL _214C correspond to through holes HU ₁₂ , HL ₁₂ , HU ₁₁₁ , and HL ₁₁₁ , respectively. Holes _HU 213C on the right side and the left side of the right wall 214C of the left wall portion 213C (the inner surface of the main body portion _{21C), HL 213C, HU 214C} , HL 214C of the periphery _{BU 213C, BL 213C, BU 214C} , the _{BL 214C} It is knurled (or blasted) (see FIG. 27). That is, the surface roughness of the peripheral portions BU _213C , BL _213C , BU _214C , and BL _214C is set to be larger than that of the other portions.

Next, the configuration of the color 40C will be described. The collar 40C is a cylindrical member similar to the collar 40A. The end faces 40C1 and 40C1 in the longitudinal direction of the collar 40C are knurled (or blasted). That is, the surface roughness of the end faces 40C1 and 40C1 of the collar 40C is set to be larger than that of the other portions. The collar 40C corresponds to the support portion of the present invention.

The rear end of the of the thus constructed shock absorbing member _20C L _{(20C R)} color 40C, 40C are inserted. In this state, the through hole HU _213C , the upper collar 40C, and the through hole HU _214C are coaxially arranged, and the through hole HL _213C , the lower collar 40C, and the through hole HL _214C are coaxially arranged. Then, the rear end portion of the shock absorbing member _20C L _{(20C R)} is inserted into the front end of the side member ₁₀ L _{(10 R).} In this state, as shown in FIG. 28, the through holes HU ₁₂ , HU _213C , HU _214C , HU ₁₁₁ and the upper collar 40C are coaxially arranged. Further, the through holes HL ₁₂ , HL _213C , HL _214C , HL ₁₁₁ and the lower collar 40C are coaxially arranged.

Next, as shown in FIG. 29, similarly to the first embodiment, with bolts BT1 and nuts NT1, side members ₁₀ L _{(10 R)} and is fastened to the shock-absorbing member _20C L _{(20C R)} .. Similarly to the first embodiment, with bolts BT2, bumper reinforcement 30 is assembled to the front end of the shock-absorbing member _20C L _{(20C R).} Note that when the nut NT1 is fastened to the distal end of the bolt BT1, by an impact absorbing member _20C L _{(20C R)} color 40C that are inserted into the front end and the shock absorption of the side members ₁₀ L _{(10 R)} deflection of the wall of the rear end portion of the member _20C L _{(20C R)} is regulated. That is, in a state where the shock absorbing member _20C L _{(20C R)} is fixed to the side member ₁₀ L _{(10 R),} the end face 40C1,40C1 of the upper collar 40C is in contact with the periphery _{BU 213C,} the _{BU 214C.} Also, in contact with the end face 40C1,40C1 of the lower collar 40C is periphery _{BL 213C,} the _{BL 214C.} As described above, the peripheral portion _{BU 213C, BU 214C, BL 213C} , the surface roughness of the end face 40C1,40C1 of _{BL 214C} and collar 40C is relatively large, a relatively large friction between them. Therefore, it can be assumed that the shock-absorbing member _20C L _{(20C R)} color 40C, and the 40C are substantially integrally formed.

When the object to the front end of the vehicle V constructed shock absorbing device 1C is applied as described above collides, the collision load acts on the front end of the shock-absorbing member _20C L (20C _R). Thus, when the shock absorbing member _20C L _{(20C R)} is pressed to the rear, through hole _{HU 213C, HL 213C, HU 214C} , in addition to the front portion of the inner peripheral surface of the _{HL 214C,} the shock absorbing member 20C _L (20C _R) color 40C can be regarded as those that are integrally formed, contact the outer peripheral surface of the bolt BT1 a front portion of the inner peripheral surface of the 40C is brought, in the portion a part of the collision load is received. Therefore, the area where the collision load can be received is larger than that when all the collision loads are received on the inner peripheral surfaces of the through holes HU _213C , HL _213C , HU _214C , and HL _214C. That is, the collision load is distributed to the inner peripheral surfaces of the collars 40C and 40C in addition to the inner peripheral surfaces of _{the through holes HU 213C} , HL _213C , HU _214C and HL _{214C. Therefore, it is possible to avoid a situation in which the collision load is concentrated on the peripheral portions of the through holes HU 213C} , HL _213C , HU _214C , and HL _214C immediately after the collision and the relevant portions are destroyed, so that the shock absorption performance is not sufficiently exhibited. That is, the shock-absorbing member _20C L, while being supported by the no side members ₁₀ L, 10 _R to the rear end portion of the main body portion 21C of 20C _R is destroyed large, front and middle portion of the main body portion 21C is car Compresses and deforms in the front-back direction. Thus, according to this embodiment, the shock-absorbing member 20C _L, shock absorbing capacity of 20C _R can be sufficiently exhibited.

1 ... Shock absorber, 10 _L , 10 _R ... Side member, 11 ... Groove-shaped part, 12 ... Groove lid part, 20 _L , 20 _R ... Shock absorbing member, 21 ...・ Main body part, 22 ・ ・ ・ bracket part, 30 ・ ・ ・ bumper reinforcement, 40 ・ ・ ・ collar, 41U, 41L ・ ・ ・ tubular part, 42 ・ ・ ・ connection part, 111 ・ ・ ・ bottom wall part, 112, 113 ... Side wall, 211 ... Upper wall, 212 ... Lower wall, 213 ... Left wall, 214 ... Right wall, 215U, 215L ... Ribs, 221 ... lid part, 222L ... flange part, 222U ... flange part, BT1 ... bolt, BU _213A , BL _213A , BU _214A , BL _214A ... peripheral part, BU _213C , BL _213C , BU _214C , BL _214C ... Peripheral part, H _41L , HL ₂₁₃ , HL ₂₁₄ , HL ₁₁₁ , HL _{12 ... Through} hole, H 41U, HU ₂₁₃ , HU ₂₁₄ , HU ₁₁₁ , HU ₁₂ ... Through hole, MB ・ ・ ・ Main body, STP ・ ・ ・ Stopper, V ・ ・ ・ Vehicle

Claims (6)

A side member with a tubular body that extends in the front-rear direction of the vehicle,
A shock absorbing device including a shock absorbing member having a tubular main body extending in the front-rear direction of the vehicle.
The rear end of the main body of the shock absorbing member was inserted into the main body of the side member from the front end of the main body of the side member, and the main body of the side member and the main body of the shock absorbing member overlapped. A set of through holes located on the same straight line is provided on one side surface portion of the portion and the other side surface portion facing the one side surface portion, and the set of through holes is provided from the one side surface portion side. By inserting the rod-shaped fastening member into the hole, the movement of the shock absorbing member with respect to the side member in the vehicle front-rear direction is restricted.
Inside the main body of the shock absorbing member, plate-shaped ribs extending in the front-rear direction of the vehicle are provided.
When a collision load is applied to the shock absorbing member, the shock absorbing member is provided as a support portion that receives the collision load and relaxes the collision load applied to the inner peripheral surface of the through hole of the shock absorbing member. When the fastening member is inserted into the main body and a collision load is applied to the shock absorbing member, the wall abuts on the rear end of the rib and constitutes the outer shell of the main body of the shock absorbing member. A shock absorbing device provided with a tubular portion that comes into contact with the inner surface of the portion and is restricted from moving with respect to the shock absorbing member. A side member with a tubular body that extends in the front-rear direction of the vehicle,
A shock absorbing device including a shock absorbing member having a tubular main body extending in the front-rear direction of the vehicle.
The rear end of the main body of the shock absorbing member was inserted into the main body of the side member from the front end of the main body of the side member, and the main body of the side member and the main body of the shock absorbing member overlapped. the other side portion opposite to the first side surface and said one side surface portion of the part, have a plurality of sets of through holes are provided respectively located in a plurality of straight lines, the plurality of sets from the first side surface side of the By inserting the rod-shaped fastening member into the through hole, the movement of the shock absorbing member with respect to the side member in the vehicle front-rear direction is restricted.
Inside the main body of the shock absorbing member, a plurality of ribs extending in the front-rear direction of the vehicle and formed in a plate shape parallel to each other are provided.
A support portion that receives the collision load when a collision load is applied to the shock absorbing member and relaxes the collision load applied to the inner peripheral surface of the through hole of the shock absorbing member .
A plurality of tubular shapes arranged in the main body of the shock absorbing member, each of the plurality of fastening members being inserted, and when a collision load is applied to the shock absorbing member, each of the plurality of ribs abuts on the rear end portion. Department and
A connecting part that connects the plurality of tubular parts,
A shock absorber provided with a support having a support. A side member with a tubular body that extends in the front-rear direction of the vehicle,
A shock absorbing device including a shock absorbing member having a tubular main body extending in the front-rear direction of the vehicle.
The rear end of the main body of the shock absorbing member was inserted into the main body of the side member from the front end of the main body of the side member, and the main body of the side member and the main body of the shock absorbing member overlapped. A set of through holes located on the same straight line is provided on one side surface portion of the portion and the other side surface portion facing the one side surface portion, and the set of through holes is provided from the one side surface portion side. By inserting the rod-shaped fastening member into the hole, the movement of the shock absorbing member with respect to the side member in the vehicle front-rear direction is restricted.
When a collision load is applied to the shock absorbing member, the shock absorbing member is provided as a support portion that receives the collision load and relaxes the collision load applied to the inner peripheral surface of the through hole of the shock absorbing member. A shock absorbing device provided with a curved portion in which the peripheral edge portion of the through hole is curved inward of the main body portion. A side member with a tubular body that extends in the front-rear direction of the vehicle,
A shock absorbing device including a shock absorbing member having a tubular main body extending in the front-rear direction of the vehicle.
The rear end of the main body of the shock absorbing member was inserted into the main body of the side member from the front end of the main body of the side member, and the main body of the side member and the main body of the shock absorbing member overlapped. A set of through holes located on the same straight line is provided on one side surface portion of the portion and the other side surface portion facing the one side surface portion, and the set of through holes is provided from the one side surface portion side. By inserting the rod-shaped fastening member into the hole, the movement of the shock absorbing member with respect to the side member in the vehicle front-rear direction is restricted.
The main body of the shock absorbing member has a plurality of wall portions extending in the front-rear direction of the vehicle.
A support portion that receives the collision load when a collision load is applied to the shock absorbing member and relaxes the collision load applied to the inner peripheral surface of the through hole of the shock absorbing member, and is a side member. A support portion that is arranged behind the intersection of two adjacent wall portions of the shock absorbing member and supports the rear end surface of the shock absorbing member when a collision load is applied to the shock absorbing member. Is provided with a shock absorber. A side member with a tubular body that extends in the front-rear direction of the vehicle,
A shock absorbing device including a shock absorbing member having a tubular main body extending in the front-rear direction of the vehicle.
The rear end of the main body of the shock absorbing member was inserted into the main body of the side member from the front end of the main body of the side member, and the main body of the side member and the main body of the shock absorbing member overlapped. A set of through holes located on the same straight line is provided on one side surface portion of the portion and the other side surface portion facing the one side surface portion, and the set of through holes is provided from the one side surface portion side. By inserting the rod-shaped fastening member into the hole, the movement of the shock absorbing member with respect to the side member in the vehicle front-rear direction is restricted.
When a collision load is applied to the shock absorbing member, the shock absorbing member is provided as a support portion that receives the collision load and relaxes the collision load applied to the inner peripheral surface of the through hole of the shock absorbing member. A tubular portion is provided which is arranged in the main body portion and into which the fastening member is inserted.
The end face of the tubular portion in the longitudinal direction and the inner peripheral surface of the main body of the shock absorbing member are in contact with each other, and the surface roughness of the contact surface between the end of the tubular portion and the shock absorbing member is , A shock absorbing device set larger than other parts of the inner peripheral surface of the shock absorbing member. A shock absorbing member having a tubular body extending in the vehicle front-rear direction that connects a side member having a tubular body extending in the vehicle front-rear direction and a tubular bumper reinforcement extending in the vehicle width direction.
The rear end of the main body of the shock absorbing member was inserted into the main body of the side member from the front end of the main body of the side member, and the main body of the side member and the main body of the shock absorbing member overlapped. A plurality of sets of through holes located on a plurality of straight lines are provided on one side surface portion of the portion and the other side surface portion facing the one side surface portion, and the one set is provided from the one side surface portion side. By inserting the rod-shaped fastening member into the through hole, the movement of the shock absorbing member with respect to the side member in the vehicle front-rear direction is restricted.
Inside the main body of the shock absorbing member, a plurality of ribs extending in the front-rear direction of the vehicle and formed in a plate shape parallel to each other are provided.
A support portion that receives the collision load when a collision load is applied to the shock absorbing member and relaxes the collision load applied to the inner peripheral surface of the through hole of the shock absorbing member .
A plurality of tubular shapes arranged in the main body of the shock absorbing member, each of the plurality of fastening members being inserted, and when a collision load is applied to the shock absorbing member, each of the plurality of ribs abuts on the rear end portion. Department and
A connecting part that connects the plurality of tubular parts,
A shock absorbing member provided with a support portion having the above.

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