JP2021146754A

JP2021146754A - Vehicular bumper cover connection structure

Info

Publication number: JP2021146754A
Application number: JP2020045188A
Authority: JP
Inventors: 明俊金; Meishun Kin; 道夫嘉数; Michio Yoshikazu; 昌浩久原; Masahiro Kuhara; 知哉竹島; Tomoya Takeshima
Original assignee: Toyota Auto Body Co Ltd; Toyota Motor Corp
Current assignee: Toyota Auto Body Co Ltd; Toyota Motor Corp
Priority date: 2020-03-16
Filing date: 2020-03-16
Publication date: 2021-09-27
Anticipated expiration: 2040-03-16
Also published as: JP7363616B2

Abstract

To prevent a bumper cover connection structure from affecting load absorption performance of a front bumper.SOLUTION: A bumper cover connection structure connects a bumper cover 21 of a front bumper 20, including the bumper cover 21 and a cushioning material 30, to a vehicle body. The bumper cover connection structure has: a connection member 250 provided at the back side of the bumper cover 21; and a receiving member 43 which is provided at the vehicle body and to which the connection member 250 is connected. The connection member 250 of the bumper cover 21 and the receiving member 43 of the vehicle body are connected in a state that these components may move relative to each other in a vehicle fore and aft direction.SELECTED DRAWING: Figure 2

Description

本発明は、バンパカバーと緩衝材とを備えるバンパーの前記バンパカバーを車両ボディに連結する車両のバンパカバー連結構造に関する。 The present invention relates to a vehicle bumper cover connecting structure for connecting the bumper cover of a bumper provided with a bumper cover and a cushioning material to a vehicle body.

これに関連する車両のバンパカバー連結構造が特許文献１に記載されている。特許文献１の技術は、図９に示すように、フロントバンパー（図番省略）のバンパカバー１００における上端中央部を車両ボディ１０５のセンターブレース１０６に連結する構造である。バンパカバー１００の上端中央部には、図１０に示すように、後方に突出するように係合板部１０２が設けられており、その係合板部１０２の中央部に角形の係合穴１０２ｋが形成されている。また、車両ボディ１０５のセンターブレース１０６には、棚状のセンターステー１０８が設けられており、そのセンターステー１０８にバンパカバー１００の係合板部１０２が前方から挿入される受け穴１０８ｈが形成されている。 A bumper cover connecting structure of a vehicle related to this is described in Patent Document 1. As shown in FIG. 9, the technique of Patent Document 1 has a structure in which the central portion of the upper end of the bumper cover 100 of the front bumper (not shown) is connected to the center brace 106 of the vehicle body 105. As shown in FIG. 10, an engaging plate portion 102 is provided at the center of the upper end of the bumper cover 100 so as to project rearward, and a square engaging hole 102k is formed at the center of the engaging plate portion 102. Has been done. Further, the center brace 106 of the vehicle body 105 is provided with a shelf-shaped center stay 108, and a receiving hole 108h into which the engaging plate portion 102 of the bumper cover 100 is inserted from the front is formed in the center stay 108. There is.

センターステー１０８の受け穴１０８ｈを形成する天井板部には、その受け穴１０８ｈに挿入されたバンパカバー１００の係合板部１０２の係合穴１０２ｋと弾性的に係合する爪部１０９が下方に突出成形されている。このため、バンパカバー１００の係合板部１０２を車両ボディ１０５のセンターステー１０８の受け穴１０８ｈに挿入すると、挿入過程でセンターステー１０８の爪部１０９が係合板部１０２の係合穴１０２ｋと弾性的に係合するようになる。そして、センターステー１０８の爪部１０９と係合板部１０２の係合穴１０２ｋとが係合すると、センターステー１０８と係合板部１０２とが前後方向に相対移動不能に保持されて、バンパカバー１００が車両ボディ１０５に連結される。なお、フロントバンパーは、バンパカバー１００の内側に緩衝材（図示省略）を備えている。 In the ceiling plate portion forming the receiving hole 108h of the center stay 108, the claw portion 109 that elastically engages with the engaging hole 102k of the engaging plate portion 102 of the bumper cover 100 inserted into the receiving hole 108h is downward. It is overhanging. Therefore, when the engaging plate portion 102 of the bumper cover 100 is inserted into the receiving hole 108h of the center stay 108 of the vehicle body 105, the claw portion 109 of the center stay 108 is elastic with the engaging hole 102k of the engaging plate portion 102 during the insertion process. Will engage with. Then, when the claw portion 109 of the center stay 108 and the engaging hole 102k of the engaging plate portion 102 are engaged, the center stay 108 and the engaging plate portion 102 are held so as not to be relatively movable in the front-rear direction, and the bumper cover 100 is moved. It is connected to the vehicle body 105. The front bumper is provided with a cushioning material (not shown) inside the bumper cover 100.

特開平１１−３４７６８号公報Japanese Unexamined Patent Publication No. 11-34768

上記したバンパカバー連結構造では、センターステー１０８の爪部１０９と係合板部１０２の係合穴１０２ｋとが前後方向に相対移動不能な状態で係合する。このため、例えば、車両の前方衝突時にフロントバンパーに対して衝突荷重が加わると、バンパカバー１００、及び緩衝材が潰れる際に、センターステー１０８の爪部１０９と係合板部１０２の係合穴１０２ｋとの係合部分が破断する。 In the bumper cover connecting structure described above, the claw portion 109 of the center stay 108 and the engaging hole 102k of the engaging plate portion 102 are engaged in a state in which they cannot move relative to each other in the front-rear direction. Therefore, for example, when a collision load is applied to the front bumper at the time of a frontal collision of the vehicle, when the bumper cover 100 and the cushioning material are crushed, the claw portion 109 of the center stay 108 and the engagement hole 102k of the engagement plate portion 102 The engaging part of is broken.

これにより、フロントバンパーが潰れる際の初期荷重は、バンパカバー１００と緩衝材とが潰れる際の荷重と、センターステー１０８の爪部１０９と係合板部１０２の係合穴１０２ｋとの係合部分の破断に必要な荷重との和で表される。即ち、フロントバンパーが潰れる際の初期荷重は、センターステー１０８の爪部１０９と係合板部１０２の係合穴１０２ｋとの係合部分の破断に必要な荷重分だけ大きくなる。さらに、爪部１０９と係合穴１０２ｋとの係合部分の破断状況によっては、フロントバンパーが潰れる際の初期荷重が変化する。したがって、バンパカバー１００、及び緩衝材の衝撃吸収性能を向上させたとしても、センターステー１０８の爪部１０９と係合板部１０２の係合穴１０２ｋとの係合部分がフロントバンパーの衝撃吸収性能に悪影響を与えることになる。 As a result, the initial load when the front bumper is crushed is the load when the bumper cover 100 and the cushioning material are crushed, and the engagement portion between the claw portion 109 of the center stay 108 and the engagement hole 102k of the engagement plate portion 102 is broken. It is expressed as the sum of the load required for. That is, the initial load when the front bumper is crushed is increased by the load required for breaking the engaging portion between the claw portion 109 of the center stay 108 and the engaging hole 102k of the engaging plate portion 102. Further, the initial load when the front bumper is crushed changes depending on the breaking condition of the engaging portion between the claw portion 109 and the engaging hole 102k. Therefore, even if the impact absorption performance of the bumper cover 100 and the cushioning material is improved, the engagement portion between the claw portion 109 of the center stay 108 and the engagement hole 102k of the engagement plate portion 102 adversely affects the impact absorption performance of the front bumper. Will be given.

本発明は、上記問題点を解決するためになされたものであり、本発明が解決しようとする課題は、バンパカバー連結構造がバンパーの荷重吸収性能に悪影響を与えないようにすることである。 The present invention has been made to solve the above problems, and the problem to be solved by the present invention is to prevent the bumper cover connecting structure from adversely affecting the load absorption performance of the bumper.

上記した課題は、各発明によって解決される。第１の発明は、バンパカバーと緩衝材とを備えるバンパーの前記バンパカバーを車両ボディに連結する車両のバンパカバー連結構造であって、前記バンパカバーの裏側に設けられた連結部材と、前記車両ボディに設けられており、前記連結部材が連結される受け部材とを有しており、前記バンパカバーの連結部材と前記車両ボディの受け部材とは、車両前後方向に相対移動が可能な状態で互いに連結されている。 The above-mentioned problems are solved by each invention. The first invention is a vehicle bumper cover connecting structure for connecting the bumper cover of a bumper provided with a bumper cover and a cushioning material to a vehicle body, the connecting member provided on the back side of the bumper cover, and the vehicle. It is provided on the body and has a receiving member to which the connecting member is connected, and the connecting member of the bumper cover and the receiving member of the vehicle body can move relative to each other in the vehicle front-rear direction. They are connected to each other.

本発明によると、バンパカバーの連結部材と車両ボディの受け部材とは、車両前後方向に相対移動が可能な状態で互いに連結されている。このため、バンパーに対して衝突荷重が加わり、バンパカバーが車両ボディの方向に移動する際、前記連結部材と受け部材との連結部分がバンパカバーの移動に対してほとんど抵抗にならない。即ち、バンパーが潰れる際の初期荷重は、バンパカバーと緩衝材とが潰れる際の荷重にほぼ等しくなり、前記連結部材と受け部材との連結部分はバンパーが潰れる際の初期荷重にほとんど影響を与えない。したがって、前記連結部材と受け部材との連結部分がバンパーの荷重吸収性能に悪影響を与えない。 According to the present invention, the connecting member of the bumper cover and the receiving member of the vehicle body are connected to each other in a state where they can move relative to each other in the front-rear direction of the vehicle. Therefore, when a collision load is applied to the bumper and the bumper cover moves in the direction of the vehicle body, the connecting portion between the connecting member and the receiving member hardly resists the movement of the bumper cover. That is, the initial load when the bumper is crushed is almost equal to the load when the bumper cover and the cushioning material are crushed, and the connecting portion between the connecting member and the receiving member has almost an influence on the initial load when the bumper is crushed. No. Therefore, the connecting portion between the connecting member and the receiving member does not adversely affect the load absorption performance of the bumper.

第２の発明によると、連結部材は、バンパカバーの裏面から後方に突出する突起状に形成されており、車両ボディに設けられた受け部材は、前記連結部材が挿通される筒状に形成されて、前記連結部材を上下左右から拘束している。このように、車両ボディの受け部材は筒状に形成されてバンパカバーの連結部材を上下方向から拘束しているため、連結部材と受け部材との連結部分でバンパカバーの重量を受けることができる。 According to the second invention, the connecting member is formed in a protruding shape protruding rearward from the back surface of the bumper cover, and the receiving member provided on the vehicle body is formed in a cylindrical shape through which the connecting member is inserted. Therefore, the connecting member is restrained from the top, bottom, left and right. In this way, since the receiving member of the vehicle body is formed in a cylindrical shape and restrains the connecting member of the bumper cover from the vertical direction, the weight of the bumper cover can be received at the connecting portion between the connecting member and the receiving member. ..

第３の発明によると、連結部材の先端には、筒状に形成された受け部材からの抜け止めを図る爪部が形成されている。 According to the third invention, a claw portion is formed at the tip of the connecting member to prevent it from coming off from the receiving member formed in a cylindrical shape.

第４の発明によると、連結部材と受け部材とは、車幅方向に等間隔で複数組設けられている。 According to the fourth invention, a plurality of sets of connecting members and receiving members are provided at equal intervals in the vehicle width direction.

第５の発明によると、連結部材と受け部材とは、緩衝材よりも高い位置に設けられている。このため、緩衝材に対してバンパカバーの重量が加わり難くなり、緩衝材が上下方向に変形し難くなる。 According to the fifth invention, the connecting member and the receiving member are provided at a position higher than the cushioning material. Therefore, the weight of the bumper cover is less likely to be applied to the cushioning material, and the cushioning material is less likely to be deformed in the vertical direction.

本発明によると、バンパカバー連結構造がバンパーの荷重吸収性能に悪影響を与えることがない。 According to the present invention, the bumper cover connecting structure does not adversely affect the load absorption performance of the bumper.

本発明の実施形態１に係るバンパカバー連結構造を備える車両の前部の模式縦断面図である。It is a schematic vertical sectional view of the front part of the vehicle provided with the bumper cover connection structure which concerns on Embodiment 1 of this invention. 前記バンパカバー連結構造を表す縦断面図である。It is a vertical cross-sectional view which shows the bumper cover connection structure. 前記バンパカバー連結構造を左前上方から見た全体斜視図である。It is the whole perspective view which looked at the bumper cover connection structure from the upper left front. 前記バンパカバー連結構造を左後上方から見た斜視図である。It is a perspective view which looked at the bumper cover connection structure from the left rear upper side. 前記バンパカバー連結構造を構成する受け部材を左前上方から見た斜視図である。It is a perspective view which looked at the receiving member which constitutes the bumper cover connection structure from the upper left front. 前記バンパカバー連結構造の動作を表す模式縦断面図である。It is a schematic vertical sectional view which shows the operation of the bumper cover connection structure. 前記バンパカバー連結構造の動作を表す模式縦断面図である。It is a schematic vertical sectional view which shows the operation of the bumper cover connection structure. 前記バンパーに加わる荷重と潰れストロークとの関係を模式的に表すグラフである。It is a graph which shows typically the relationship between the load applied to the bumper, and a crushing stroke. 従来のバンパカバー連結構造を備える車両の前部を表す模式斜視図である。It is a schematic perspective view which shows the front part of the vehicle which has the conventional bumper cover connection structure. 従来のバンパカバー連結構造を表す斜視図である。It is a perspective view which shows the conventional bumper cover connection structure.

〔実施形態１〕
以下、図１〜図８に基づいて本発明の実施形態１に係るバンパカバー連結構造について説明する。本実施形態に係るバンパカバー連結構造は、フロントバンパー２０のバンパカバー２１を車両１０のボディに連結するための構造である。ここで、図中に示す前後左右、及び上下は、本実施形態に係るバンパカバー連結構造を備える車両１０の前後左右、及び上下に対応している。 [Embodiment 1]
Hereinafter, the bumper cover connection structure according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 8. The bumper cover connecting structure according to the present embodiment is a structure for connecting the bumper cover 21 of the front bumper 20 to the body of the vehicle 10. Here, the front-rear, left-right, and top and bottom shown in the figure correspond to the front-back, left-right, and top and bottom of the vehicle 10 having the bumper cover connecting structure according to the present embodiment.

＜車両の前部構造の概要について＞
車両１０（車両ボディ）の前部には、図１に示すように、エンジンルームＥの前端位置にラジエータ（図示省略）を支持する枠状のラジエータサポート１５が縦向きの状態で設けられている。また、車両ボディの前部には、エンジンルームＥの左右両側位置に左右一対のフロントサイドメンバ１４がラジエータサポート１５の下側で車両前後方向に延びるように設けられている。左右一対のフロントサイドメンバ１４の先端（前端）には、左右のクラッシュボックス１６を介してフロントバンパー２０のバンパリインフォース３６が連結されている。 <Overview of the front structure of the vehicle>
As shown in FIG. 1, a frame-shaped radiator support 15 for supporting a radiator (not shown) is provided at the front end position of the engine room E in a vertically oriented state on the front portion of the vehicle 10 (vehicle body). .. Further, a pair of left and right front side members 14 are provided on the front portion of the vehicle body at positions on both the left and right sides of the engine room E so as to extend in the front-rear direction of the vehicle under the radiator support 15. The bumper infos 36 of the front bumper 20 are connected to the tips (front ends) of the pair of left and right front side members 14 via the left and right crash boxes 16.

＜フロントバンパー２０の構成概要について＞
フロントバンパー２０は、図１に示すように、バンパカバー２１を備えている。バンパカバー２１は、フロントバンパー２０の外形意匠を構成する部材であり、そのバンパカバー２１の車幅方向における中央位置には、空気取入れ口として働くとともに、装飾部材であるバンパグリル２３が取付けられている。また、フロントバンパー２０は、バンパカバー２１の内側に衝突荷重を吸収する上部緩衝材３０と下部緩衝材３５とを備えている。さらに、フロントバンパー２０は、上部緩衝材３０の上側でバンパカバー２１をラジエータサポート１５の下辺部に連結するバンパカバー連結機構４０と、下部緩衝材３５の位置でバンパカバー２１の下端部が連結される上記したバンパリインフォース３６とを備えている。バンパリインフォース３６は、車幅方向に延びる梁状部材であり、例えば、アルミ合金等により角筒状に形成されている。 <Overview of the configuration of the front bumper 20>
As shown in FIG. 1, the front bumper 20 includes a bumper cover 21. The bumper cover 21 is a member that constitutes the outer design of the front bumper 20, and a bumper grill 23 that serves as an air intake port and is a decorative member is attached to the center position of the bumper cover 21 in the vehicle width direction. Further, the front bumper 20 includes an upper cushioning material 30 and a lower cushioning material 35 that absorb the collision load inside the bumper cover 21. Further, in the front bumper 20, the bumper cover connecting mechanism 40 that connects the bumper cover 21 to the lower side portion of the radiator support 15 on the upper side of the upper cushioning material 30 and the lower end portion of the bumper cover 21 are connected at the position of the lower cushioning material 35. It is equipped with the bumper info loose 36 described above. The bumper infoce 36 is a beam-shaped member extending in the vehicle width direction, and is formed in a square cylinder shape by, for example, an aluminum alloy or the like.

＜上部緩衝材３０について＞
上部緩衝材３０は、下部緩衝材３５と共に車両１０の前方衝突時の衝撃を吸収する部材である。上部緩衝材３０は、図３、図４に示すように、複数組のセル集合体３０ｗから構成されている。複数組のセル集合体３０ｗは、車幅方向（左右方向）に一定の間隙を開けた状態でバンパカバー２１とラジエータサポート１５間に設けられている。セル集合体３０ｗは、図２、及び図４に示すように、衝突荷重Ｆが加わる方向（前後方向）に重ねられた四個の衝撃吸収用セル３１から構成されている。衝撃吸収用セル３１は、図３、図４に示すように、軸心が上下方向を向くよう立てられた六角筒体３１０と、図２に示すように、その六角筒体３１０の下部開口側に形成された山形の蓋状板部３１８とを備えている。 <About upper cushioning material 30>
The upper cushioning material 30 is a member that absorbs the impact of the vehicle 10 at the time of a frontal collision together with the lower cushioning material 35. As shown in FIGS. 3 and 4, the upper cushioning material 30 is composed of a plurality of sets of cell aggregates 30w. The plurality of sets of cell aggregates 30w are provided between the bumper cover 21 and the radiator support 15 with a certain gap in the vehicle width direction (left-right direction). As shown in FIGS. 2 and 4, the cell assembly 30w is composed of four impact absorbing cells 31 stacked in the direction in which the collision load F is applied (front-rear direction). As shown in FIGS. 3 and 4, the shock absorbing cell 31 has a hexagonal cylinder 310 whose axis is oriented in the vertical direction and a lower opening side of the hexagonal cylinder 310 as shown in FIG. It is provided with a chevron-shaped lid-shaped plate portion 318 formed in the above.

＜バンパカバー連結機構４０の概要について＞
バンパカバー連結機構４０は、図１に示すように、バンパカバー２１の重量を支えた状態で、そのバンパカバー２１をラジエータサポート１５の下辺部に連結する機構である。バンパカバー連結機構４０は、図２、図３に示すように、バンパカバー２１の裏側に突出する棚状突出部２５と、その棚状突出部２５の位置で後方に突出する複数の連結部材２５０とを備えている。また、バンパカバー連結機構４０は、ラジエータサポート１５に固定されて、連結部材２５０と連結可能に構成された受け部材４３を備えている。バンパカバー連結機構４０の棚状突出部２５は、バンパカバー２１の所定高さ位置で、ほぼ一定寸法だけ後方に突出しており、車幅方向に延びるように形成されている。 <Overview of the bumper cover connecting mechanism 40>
As shown in FIG. 1, the bumper cover connecting mechanism 40 is a mechanism for connecting the bumper cover 21 to the lower side portion of the radiator support 15 while supporting the weight of the bumper cover 21. As shown in FIGS. 2 and 3, the bumper cover connecting mechanism 40 includes a shelf-shaped projecting portion 25 projecting to the back side of the bumper cover 21, and a plurality of connecting members 250 projecting rearward at the position of the shelf-shaped projecting portion 25. And have. Further, the bumper cover connecting mechanism 40 includes a receiving member 43 that is fixed to the radiator support 15 and is configured to be connectable to the connecting member 250. The shelf-shaped projecting portion 25 of the bumper cover connecting mechanism 40 projects rearward by a substantially constant dimension at a predetermined height position of the bumper cover 21, and is formed so as to extend in the vehicle width direction.

＜バンパカバー連結機構４０の連結部材２５０について＞
バンパカバー連結機構４０の連結部材２５０は、図３、図４に示すように、棚状突出部２５の後端位置から後方に突出する断面角形をした帯板状の突起であり、車幅方向に等間隔で複数本（図３、図４では四本）設けられている。連結部材２５０は、図２に示すように、先端側（後端側）で幅寸法と厚み寸法とが徐々に小さくなるように形成されている。また、連結部材２５０の先端部の下面には、図２に示すように、受け部材４３の筒状部４４０（後記する）に挿通された状態で、筒状部４４０からの抜け止めを図る爪部２５３が形成されている。連結部材２５０と棚状突出部２５とは共に樹脂製であり、バンパカバー２１と共に一体成形されている。 <About the connecting member 250 of the bumper cover connecting mechanism 40>
As shown in FIGS. 3 and 4, the connecting member 250 of the bumper cover connecting mechanism 40 is a strip-shaped protrusion having a square cross section that protrudes rearward from the rear end position of the shelf-shaped protruding portion 25, and is in the vehicle width direction. A plurality of lines (four lines in FIGS. 3 and 4) are provided at equal intervals. As shown in FIG. 2, the connecting member 250 is formed so that the width dimension and the thickness dimension gradually become smaller on the front end side (rear end side). Further, as shown in FIG. 2, on the lower surface of the tip portion of the connecting member 250, a claw for preventing the connecting member 250 from coming off from the tubular portion 440 while being inserted into the tubular portion 440 (described later) of the receiving member 43. Part 253 is formed. Both the connecting member 250 and the shelf-shaped protrusion 25 are made of resin, and are integrally molded together with the bumper cover 21.

＜バンパカバー連結機構４０の受け部材４３について＞
バンパカバー連結機構４０の受け部材４３は、上記したように、ラジエータサポート１５の下辺部に固定され部材であり、図２、図３に示すように、バンパカバー２１の連結部材２５０が連結できるように構成されている。また、受け部材４３は、上部緩衝材３０を支持できるように構成されている。受け部材４３は、図５に示すように、ラジエータサポート１５の下辺部の前面１５ｚに固定される受け部材本体部４３０と、受け部材本体部４３０の上面に設けられた筒状部４４０とから構成されている。 <About the receiving member 43 of the bumper cover connecting mechanism 40>
As described above, the receiving member 43 of the bumper cover connecting mechanism 40 is a member fixed to the lower side portion of the radiator support 15, and as shown in FIGS. 2 and 3, the connecting member 250 of the bumper cover 21 can be connected. It is configured in. Further, the receiving member 43 is configured to support the upper cushioning material 30. As shown in FIG. 5, the receiving member 43 includes a receiving member main body 430 fixed to the front surface 15z of the lower side of the radiator support 15 and a cylindrical portion 440 provided on the upper surface of the receiving member main body 430. Has been done.

受け部材本体部４３０は、図４、図５に示すように、左右に長い角形の箱状に形成されており、その受け部材本体部４３０の後端縦壁部４３２（図４参照）がラジエータサポート１５の下辺部の前面１５ｚにボルト止めされている（図５参照）。また、受け部材本体部４３０の上面の右側中央部と左側中央部とには、図４、図５に示すように、左右一対の支持形状部４３３が後方に突出するように形成されている。そして、左右一対の支持形状部４３３の後壁部がラジエータサポート１５の下辺部の上部フランジ１５ｆにボルト止めされている。 As shown in FIGS. 4 and 5, the receiving member main body 430 is formed in the shape of a long square box on the left and right, and the rear end vertical wall portion 432 (see FIG. 4) of the receiving member main body 430 is a radiator. It is bolted to the front surface 15z of the lower side of the support 15 (see FIG. 5). Further, as shown in FIGS. 4 and 5, a pair of left and right support shape portions 433 are formed so as to project rearward from the right central portion and the left central portion of the upper surface of the receiving member main body portion 430. The rear wall portions of the pair of left and right support shape portions 433 are bolted to the upper flange 15f of the lower side portion of the radiator support 15.

受け部材本体部４３０の前面４３５は、図２、及び図５に示すように、平坦に形成されており、上部緩衝材３０を構成するセル集合体３０ｗの後端壁３１ｂが面接触可能なように構成されている。そして、セル集合体３０ｗの後端壁３１ｂが受け部材本体部４３０の前面４３５にボルト止めされている。また、セル集合体３０ｗの後端壁３１ｂには、図３、図４に示すように、逆Ｌ字形に成形されたブラケット部３１ｓが設けられており、そのブラケット部３１ｓの後方に突出する平板３１ｅが受け部材本体部４３０の上面にボルト止めされている。 As shown in FIGS. 2 and 5, the front surface 435 of the receiving member main body 430 is formed flat so that the rear end wall 31b of the cell assembly 30w constituting the upper cushioning material 30 can be surface-contacted. It is configured in. Then, the rear end wall 31b of the cell assembly 30w is bolted to the front surface 435 of the receiving member main body 430. Further, as shown in FIGS. 3 and 4, the rear end wall 31b of the cell assembly 30w is provided with a bracket portion 31s formed in an inverted L shape, and a flat plate protruding rearward from the bracket portion 31s. 31e is bolted to the upper surface of the receiving member main body 430.

＜受け部材４３の筒状部４４０について＞
受け部材本体部４３０の上面には、バンパカバー２１の各々の連結部材２５０に対応する位置に、それらの連結部材２５０が連結される筒状部４４０が形成されている。筒状部４４０は、図２、及び図４、図５に示すように、バンパカバー２１の連結部材２５０が挿通される断面角形の筒状に形成されている。筒状部４４０は、連結部材２５０を幅方向（左右方向）両側から拘束する前側筒部４４２と、その前側筒部４４２の後側で開口高さ寸法を徐々に減少させる絞り部４４４と、その絞り部４４４の後側で連結部材２５０を上下左右から拘束するガイド部４４６とから構成されている。 <About the cylindrical part 440 of the receiving member 43>
On the upper surface of the receiving member main body 430, a cylindrical portion 440 to which the connecting members 250 are connected is formed at a position corresponding to each connecting member 250 of the bumper cover 21. As shown in FIGS. 2, 4, and 5, the tubular portion 440 is formed in a cylindrical shape having a square cross section through which the connecting member 250 of the bumper cover 21 is inserted. The tubular portion 440 includes a front tubular portion 442 that restrains the connecting member 250 from both sides in the width direction (horizontal direction), a throttle portion 444 that gradually reduces the opening height dimension on the rear side of the front cylindrical portion 442, and a throttle portion 444 thereof. It is composed of a guide portion 446 that restrains the connecting member 250 from the top, bottom, left, and right on the rear side of the throttle portion 444.

筒状部４４０の前側筒部４４２は、図２、図３に示すように、角筒体であり、開口幅寸法が連結部材２５０の最大幅寸法とほぼ等しい値に設定されている。また、前側筒部４４２の開口高さ寸法が連結部材２５０の厚み寸法（高さ寸法）よりも十分大きな値に設定されている。筒状部４４０の絞り部４４４は、前側筒部４４２に挿入された連結部材２５０の先端部をガイド部４４６に導く部分である。絞り部４４４は、前側筒部４４２と等しい開口幅寸法に設定されており、図２に示すように、天板部を後側で低くなるように傾斜させることで開口高さ寸法を徐々に減少させられるように構成されている。ここで、絞り部４４４の後端位置における開口高さ寸法は、連結部材２５０の厚み寸法（高さ寸法）よりも若干大きな値に設定されている。 As shown in FIGS. 2 and 3, the front cylindrical portion 442 of the tubular portion 440 is a square cylinder, and the opening width dimension is set to a value substantially equal to the maximum width dimension of the connecting member 250. Further, the opening height dimension of the front cylinder portion 442 is set to a value sufficiently larger than the thickness dimension (height dimension) of the connecting member 250. The throttle portion 444 of the tubular portion 440 is a portion that guides the tip end portion of the connecting member 250 inserted into the front side tubular portion 442 to the guide portion 446. The throttle portion 444 is set to have an opening width dimension equal to that of the front cylinder portion 442, and as shown in FIG. 2, the opening height dimension is gradually reduced by inclining the top plate portion so as to be lower on the rear side. It is configured to be forced. Here, the opening height dimension at the rear end position of the throttle portion 444 is set to a value slightly larger than the thickness dimension (height dimension) of the connecting member 250.

筒状部４４０のガイド部４４６は、図５、図６に示すように、車両の前方衝突時にバンパカバー２１、及び連結部材２５０が衝突荷重Ｆを受けて後方に移動する際、その連結部材２５０をガイドする部分である。筒状部４４０のガイド部４４６における開口幅寸法と開口高さ寸法とは、絞り部４４４の後端位置における開口幅寸法と開口高さ寸法とに等しい値に設定されている。また、ガイド部４４６の天板部には、図２等に示すように、切欠が形成されており、その切欠の前端位置にエッジ部４４６ｅが形成されている。 As shown in FIGS. 5 and 6, the guide portion 446 of the tubular portion 440 has a connecting member 250 when the bumper cover 21 and the connecting member 250 receive a collision load F and move rearward during a frontal collision of the vehicle. It is a part that guides. The opening width dimension and the opening height dimension of the guide portion 446 of the tubular portion 440 are set to values equal to the opening width dimension and the opening height dimension at the rear end position of the throttle portion 444. Further, as shown in FIG. 2 and the like, a notch is formed in the top plate portion of the guide portion 446, and an edge portion 446e is formed at the front end position of the notch.

また、筒状部４４０の床面を構成する受け部材本体部４３０の上面には、図２等に示すように、連結部材２５０の爪部２５３が後側から掛けられる突条４４８が前後方向に延びるように形成されている。突条４４８の後端は連結部材２５０の爪部２５３が掛けられるエッジ状に形成されており、突条４４８の前部には筒状部４４０に対する連結部材２５０の挿入を妨げないように緩やかな傾斜が設けられている。受け部材４３は、樹脂製であり、受け部材本体部４３０と筒状部４４０とは一体成形されている。 Further, as shown in FIG. 2 and the like, a ridge 448 on which the claw portion 253 of the connecting member 250 is hung from the rear side is provided on the upper surface of the receiving member main body portion 430 forming the floor surface of the tubular portion 440 in the front-rear direction. It is formed to extend. The rear end of the ridge 448 is formed in an edge shape on which the claw portion 253 of the connecting member 250 is hung, and the front portion of the ridge 448 is gentle so as not to interfere with the insertion of the connecting member 250 into the tubular portion 440. There is a slope. The receiving member 43 is made of resin, and the receiving member main body portion 430 and the tubular portion 440 are integrally molded.

＜バンパカバー連結機構４０等の組付けについて＞
バンパカバー２１を車両ボディ（ラジエータサポート１５の下辺部）に連結する際には、図５に示すように、受け部材４３の受け部材本体部４３０は、ラジエータサポート１５の下辺部の前面１５ｚにボルト止めされている。また、受け部材本体部４３０の左右の支持形状部４３３の後壁部がラジエータサポート１５の下辺部の上部フランジ１５ｆにボルト止めされている。さらに、受け部材４３の受け部材本体部４３０の前面４３５には、図３、図４に示すように、上部緩衝材３０の各々のセル集合体３０ｗの後端壁３１ｂがボルト止めされている。また、セル集合体３０ｗの後端壁３１ｂに設けられたブラケット部３１ｓの平板３１ｅが受け部材本体部４３０の上面にボルト止めされている。 <Assembly of bumper cover connecting mechanism 40, etc.>
When connecting the bumper cover 21 to the vehicle body (lower side portion of the radiator support 15), as shown in FIG. 5, the receiving member main body portion 430 of the receiving member 43 is bolted to the front surface 15z of the lower side portion of the radiator support 15. It has been stopped. Further, the rear wall portions of the left and right support shape portions 433 of the receiving member main body portion 430 are bolted to the upper flange 15f of the lower side portion of the radiator support 15. Further, as shown in FIGS. 3 and 4, the rear end wall 31b of each cell assembly 30w of the upper cushioning material 30 is bolted to the front surface 435 of the receiving member main body 430 of the receiving member 43. Further, a flat plate 31e of the bracket portion 31s provided on the rear end wall 31b of the cell assembly 30w is bolted to the upper surface of the receiving member main body portion 430.

この状態で、図２から図４に示すように、バンパカバー２１の棚状突出部２５に設けられた各々の連結部材２５０の先端部（後端部）が受け部材４３の各々の筒状部４４０に挿入される。このとき、筒状部４４０の前側筒部４４２の開口は上下方向に広く形成されているため、連結部材２５０の先端部を筒状部４４０に挿入し易くなる。また、筒状部４４０の絞り部４４４の働きにより、連結部材２５０の先端部をガイド部４４６までスムーズに導けるようになる。 In this state, as shown in FIGS. 2 to 4, the tip end (rear end portion) of each connecting member 250 provided on the shelf-shaped projecting portion 25 of the bumper cover 21 is each tubular portion of the receiving member 43. It is inserted in 440. At this time, since the opening of the front cylindrical portion 442 of the tubular portion 440 is widely formed in the vertical direction, the tip end portion of the connecting member 250 can be easily inserted into the tubular portion 440. Further, by the action of the drawing portion 444 of the cylindrical portion 440, the tip portion of the connecting member 250 can be smoothly guided to the guide portion 446.

そして、各々の連結部材２５０の先端部が各々の筒状部４４０のガイド部４４６まで導かれ、図２に示すように、連結部材２５０の爪部２５３がガイド部４４６の突条４４８の後端（エッジ）に対して樹脂の弾性力を利用して後方から掛けられる。これにより、各々の筒状部４４０に対する各々の連結部材２５０の抜け止めが図られ、バンパカバー２１がラジエータサポート１５の下辺部に連結される。この状態で、上部緩衝材３０のセル集合体３０ｗは、連結部材２５０の下側でバンパカバー２１の棚状突出部２５と受け部材４３の前面４３５とにより前後方向から挟まれた状態に保持される。そして、バンパカバー２１の重量がバンパカバー連結機構４０（連結部材２５０、受け部材４３）の働きにより、ラジエータサポート１５によって受けられるようになる。 Then, the tip end portion of each connecting member 250 is guided to the guide portion 446 of each tubular portion 440, and as shown in FIG. 2, the claw portion 253 of the connecting member 250 is the rear end of the ridge 448 of the guide portion 446. It is hung from the rear using the elastic force of the resin with respect to the (edge). As a result, each connecting member 250 is prevented from coming off with respect to each cylindrical portion 440, and the bumper cover 21 is connected to the lower side portion of the radiator support 15. In this state, the cell assembly 30w of the upper cushioning material 30 is held in a state of being sandwiched from the front-rear direction by the shelf-shaped protrusion 25 of the bumper cover 21 and the front surface 435 of the receiving member 43 under the connecting member 250. NS. Then, the weight of the bumper cover 21 can be received by the radiator support 15 by the action of the bumper cover connecting mechanism 40 (connecting member 250, receiving member 43).

＜バンパカバー連結機構４０の働きについて＞
車両前方衝突時にフロントバンパー２０に対して衝突荷重Ｆが加わると、図６、図７に示すように、バンパカバー２１は変形して後方向に移動する。これにより、上部緩衝材３０の各々のセル集合体３０ｗがバンパカバー２１と受け部材４３（ラジエータサポート１５）間で潰れ、衝突荷重Ｆが吸収される。また、図７に示すように、バンパカバー２１に設けられた各々の連結部材２５０が受け部材４３の各々の筒状部４４０に押し込まれる。このとき、筒状部４４０のガイド部４４６は、連結部材２５０が衝突荷重Ｆを受けて後方に移動するのをガイドするため、連結部材２５０の後方移動を妨げることがない。また、連結部材２５０の爪部２５３がその連結部材２５０の後方移動を妨げることがない。即ち、バンパカバー２１の連結部材２５０と受け部材４３の筒状部４４０とがフロントバンパー２０のバンパカバー２１、及び上部緩衝材３０（セル集合体３０ｗ）が潰れる際の抵抗にならない。 <About the function of the bumper cover connecting mechanism 40>
When a collision load F is applied to the front bumper 20 at the time of a vehicle front collision, the bumper cover 21 is deformed and moves in the rear direction as shown in FIGS. 6 and 7. As a result, each cell assembly 30w of the upper cushioning material 30 is crushed between the bumper cover 21 and the receiving member 43 (radiator support 15), and the collision load F is absorbed. Further, as shown in FIG. 7, each connecting member 250 provided on the bumper cover 21 is pushed into each cylindrical portion 440 of the receiving member 43. At this time, since the guide portion 446 of the tubular portion 440 guides the connecting member 250 to move backward by receiving the collision load F, the guide portion 446 does not hinder the backward movement of the connecting member 250. Further, the claw portion 253 of the connecting member 250 does not hinder the backward movement of the connecting member 250. That is, the connecting member 250 of the bumper cover 21 and the tubular portion 440 of the receiving member 43 do not serve as resistance when the bumper cover 21 of the front bumper 20 and the upper cushioning material 30 (cell assembly 30w) are crushed.

ここで、仮に、バンパカバー２１の連結部材２５０と受け部材４３の筒状部４４０とが前後方向に相対移動不能な状態で係合している場合（従来技術参照）、フロントバンパー２０に対して衝突荷重Ｆが加わると、連結部材２５０と筒状部４４０との係合部分が破断してバンパカバー２１、及び上部緩衝材３０（セル集合体３０ｗ）が潰れるようになる。この場合、フロントバンパー２０が潰れる際の初期荷重は、バンパカバー２１、及び上部緩衝材３０が潰れる際の荷重と、連結部材２５０と筒状部４４０との係合部分が破断するために必要な荷重との和で表される（図８の点線参照）。なお、連結部材２５０と筒状部４４０との係合部分の破断状況によってフロントバンパー２０が潰れる際の初期荷重は変化する。 Here, if the connecting member 250 of the bumper cover 21 and the tubular portion 440 of the receiving member 43 are engaged in a state where they cannot move relative to each other in the front-rear direction (see the prior art), they collide with the front bumper 20. When the load F is applied, the engaging portion between the connecting member 250 and the tubular portion 440 is broken, and the bumper cover 21 and the upper cushioning material 30 (cell assembly 30w) are crushed. In this case, the initial load when the front bumper 20 is crushed is the load when the bumper cover 21 and the upper cushioning material 30 are crushed and the load required for the engaging portion between the connecting member 250 and the tubular portion 440 to break. It is represented by the sum of and (see the dotted line in FIG. 8). The initial load when the front bumper 20 is crushed changes depending on the breaking condition of the engaging portion between the connecting member 250 and the tubular portion 440.

これに対し、本実施形態では、上記したように、バンパカバー２１の連結部材２５０と受け部材４３の筒状部４４０とがフロントバンパー２０のバンパカバー２１、及び上部緩衝材３０（セル集合体３０ｗ）が潰れる際の抵抗にならない。このため、図８の実線に示すように、フロントバンパー２０が潰れる際の初期荷重をバンパカバー２１、及び上部緩衝材３０（セル集合体３０ｗ）が潰れる際の荷重とほぼ等しくでき、前記初期荷重のピークを抑えることができる。即ち、バンパカバー２１の連結部材２５０と受け部材４３の筒状部４４０との連結部分がフロントバンパー２０の荷重吸収性能に悪影響を与えない。 On the other hand, in the present embodiment, as described above, the connecting member 250 of the bumper cover 21 and the tubular portion 440 of the receiving member 43 are the bumper cover 21 of the front bumper 20 and the upper cushioning material 30 (cell assembly 30w). Does not become a resistance when crushed. Therefore, as shown by the solid line in FIG. 8, the initial load when the front bumper 20 is crushed can be made substantially equal to the load when the bumper cover 21 and the upper cushioning material 30 (cell assembly 30w) are crushed. The peak can be suppressed. That is, the connecting portion between the connecting member 250 of the bumper cover 21 and the tubular portion 440 of the receiving member 43 does not adversely affect the load absorbing performance of the front bumper 20.

また、受け部材４３の筒状部４４０におけるガイド部４４６の働きでバンパカバー２１の連結部材２５０は後方向にガイドされるため、衝突荷重Ｆが斜め方向から加わった場合でもバンパカバー２１は後方向に移動する。このため、上部緩衝材３０の潰れ方がほぼ一定になる。 Further, since the connecting member 250 of the bumper cover 21 is guided in the rear direction by the action of the guide portion 446 in the cylindrical portion 440 of the receiving member 43, the bumper cover 21 is in the rear direction even when the collision load F is applied from an oblique direction. Move to. Therefore, the way the upper cushioning material 30 is crushed becomes almost constant.

＜本実施形態で使用した用語と本発明における用語との対応＞
前記上部緩衝材３０が本発明の緩衝材に相当し、ラジエータサポート１５が本発明の車両ボディに相当する。また、棚状突出部２５が本発明のバンパカバーの裏面、及び裏側に相当する。さらに、受け部材４３の筒状部４４０が本発明の受け部材に相当する。また、フロントバンパー２０が本発明のバンパーに相当する。 <Correspondence between the terms used in the present embodiment and the terms in the present invention>
The upper cushioning material 30 corresponds to the cushioning material of the present invention, and the radiator support 15 corresponds to the vehicle body of the present invention. Further, the shelf-shaped protrusion 25 corresponds to the back surface and the back surface of the bumper cover of the present invention. Further, the tubular portion 440 of the receiving member 43 corresponds to the receiving member of the present invention. Further, the front bumper 20 corresponds to the bumper of the present invention.

＜本実施形態に係るバンパカバー連結構造の長所について＞
本実施形態に係るバンパカバー連結機構４０（バンパカバー連結構造）によると、バンパカバー２１の連結部材２５０とラジエータサポート１５（車両ボディ）の受け部材４３の筒状部４４０（受け部材）とは、車両前後方向に相対移動が可能な状態で互いに連結されている。このため、フロントバンパー２０（バンパー）に対して衝突荷重Ｆが加わり、バンパカバー２１がラジエータサポート１５の方向（後方向）に移動する際、連結部材２５０と受け部材４３との連結部分がバンパカバー２１の移動に対してほとんど抵抗にならない。即ち、フロントバンパー２０が潰れる際の初期荷重は、バンパカバー２１と上部緩衝材３０とが潰れる際の荷重にほぼ等しくなり、連結部材２５０と受け部材４３（筒状部４４０）との連結部分はフロントバンパー２０が潰れる際の初期荷重にほとんど影響を与えない。したがって、連結部材２５０と受け部材４３（筒状部４４０）との連結部分がフロントバンパー２０の荷重吸収性能に悪影響を与えない。さらに、バンパカバー連結機構４０の働きにより、バンパカバー２１の重量をラジエータサポート１５で受けられるようになる。 <Advantages of the bumper cover connection structure according to this embodiment>
According to the bumper cover connecting mechanism 40 (bumper cover connecting structure) according to the present embodiment, the connecting member 250 of the bumper cover 21 and the tubular portion 440 (receiving member) of the receiving member 43 of the radiator support 15 (vehicle body) are They are connected to each other so that they can move relative to each other in the front-rear direction of the vehicle. Therefore, when a collision load F is applied to the front bumper 20 (bumper) and the bumper cover 21 moves in the direction (rear direction) of the radiator support 15, the connecting portion between the connecting member 250 and the receiving member 43 is the bumper cover 21. There is almost no resistance to the movement of. That is, the initial load when the front bumper 20 is crushed is substantially equal to the load when the bumper cover 21 and the upper cushioning material 30 are crushed, and the connecting portion between the connecting member 250 and the receiving member 43 (cylindrical portion 440) is the front bumper. It has almost no effect on the initial load when 20 is crushed. Therefore, the connecting portion between the connecting member 250 and the receiving member 43 (cylindrical portion 440) does not adversely affect the load absorbing performance of the front bumper 20. Further, by the action of the bumper cover connecting mechanism 40, the weight of the bumper cover 21 can be received by the radiator support 15.

＜変更例＞
ここで、本発明は上記実施形態に限定されるものではなく、本発明の要旨を逸脱しない範囲における変更が可能である。例えば、本実施形態では、受け部材４３の筒状部４４０を前側筒部４４２と絞り部４４４とガイド部４４６とから構成する例を示した。しかし、受け部材４３の筒状部４４０をガイド部４４６のみから構成することも可能である。また、本実施形態では、上部緩衝材３０を複数の衝撃吸収用セル３１を備えるセル集合体３０ｗから構成する例を示した。しかし、上部緩衝材３０を、例えば、弾性発泡体のブロック等から構成することも可能である。また、本実施形態では、フロントバンパー２０を例示したが、リヤバンパーに本発明を適用することも可能である。 <Change example>
Here, the present invention is not limited to the above-described embodiment, and changes can be made without departing from the gist of the present invention. For example, in the present embodiment, an example is shown in which the cylindrical portion 440 of the receiving member 43 is composed of a front cylindrical portion 442, a throttle portion 444, and a guide portion 446. However, it is also possible that the cylindrical portion 440 of the receiving member 43 is composed of only the guide portion 446. Further, in the present embodiment, an example is shown in which the upper cushioning material 30 is composed of a cell assembly 30w including a plurality of shock absorbing cells 31. However, the upper cushioning material 30 can also be made of, for example, a block of elastic foam. Further, in the present embodiment, the front bumper 20 is illustrated, but the present invention can also be applied to the rear bumper.

１５・・・・ラジエータサポート（車両ボディ）
２０・・・・フロントバンパー（バンパー）
２１・・・・バンパカバー
２３・・・・バンパグリル（バンパカバー）
２５・・・・棚状突出部（バンパカバーの裏側）
３０・・・・上部緩衝材（緩衝材）
４０・・・・バンパカバー連結機構
４３・・・・受け部材
４４０・・・筒状部（受け部材）
２５０・・・連結部材
２５３・・・爪部
15 ... Radiator support (vehicle body)
20 ... Front bumper (bumper)
21 ... Bumper cover 23 ... Bumper grill (Bumper cover)
25 ... Shelf-shaped protrusion (behind the bumper cover)
30 ... Upper cushioning material (cushioning material)
40 ... Bumper cover connecting mechanism 43 ... Receiving member 440 ... Cylindrical part (receiving member)
250 ... Connecting member 253 ... Claw

Claims

A vehicle bumper cover connecting structure for connecting the bumper cover of a bumper provided with a bumper cover and a cushioning material to the vehicle body.
A connecting member provided on the back side of the bumper cover and
A receiving member provided on the vehicle body and to which the connecting member is connected,
Have and
The bumper cover connecting member of the vehicle and the receiving member of the vehicle body are connected to each other in a state where they can move relative to each other in the front-rear direction of the vehicle.

The vehicle bumper cover connection structure according to claim 1.
The connecting member is formed in a protruding shape protruding rearward from the back surface of the bumper cover.
The receiving member provided on the vehicle body is formed in a cylindrical shape through which the connecting member is inserted, and has a vehicle bumper cover connecting structure that restrains the connecting member from above, below, left and right.

The vehicle bumper cover connection structure according to claim 2.
A vehicle bumper cover connecting structure in which a claw portion is formed at the tip of the connecting member to prevent it from coming off from a cylindrical receiving member.

The vehicle bumper cover connection structure according to any one of claims 1 to 3.
A vehicle bumper cover connecting structure in which a plurality of sets of the connecting member and the receiving member are provided at equal intervals in the vehicle width direction.

The vehicle bumper cover connection structure according to any one of claims 1 to 4.
The connecting member and the receiving member are vehicle bumper cover connecting structures provided at positions higher than the cushioning material.