JP2006232114A - Bumper cover for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bumper cover 10 of structure improved in rigidity in the periphery of roots of a fitting part 14 after installing in a vehicle 1. <P>SOLUTION: The bumper cover 10 has a cover main body 12 structuring one part of exterior of the vehicle 1 and the fitting part 14 projecting from the cover main body 12 and folded to be engaged with the predetermined part 26 of a car body 5 by positioning to fit the bumper cover 10 to the car body 5. Furthermore, the bumper cover 10 has a rib 20 projecting from the cover main body 12 and extended toward a base part 16 of the fitting part 14 so that the fitting part 14 abuts on the rib 20 when the fitting part 14 is positioned to the determined part 26 of the car body 5. With this structure, when the fitting part 14 is positioned to the predetermined part 56 of the car body 5, the fitting part 14 abuts on the rib 20. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a bumper cover to be mounted on a vehicle body such as an automobile, and more particularly to a structure of a part where the bumper cover is attached to the vehicle body.

  A bumper cover 10 as shown in FIG. 1 is provided in front of and behind a vehicle such as an automobile in order to reduce the impact when the vehicle collides with an obstacle. The bumper cover 10 is formed of a flexible material, generally a synthetic resin, and is deformed to achieve the above-described impact mitigation. The mounting of the bumper cover 10 on the vehicle body 5 is performed using a mounting portion 14 that is formed integrally with the cover main body portion 12 that is a part of the exterior of the vehicle 1 and extends from the cover main body portion 12. The attachment portion 14 and the cover main body portion 12 are usually formed so that they are as flat as possible in order to facilitate resin molding. Therefore, the bumper cover 10 is attached to the vehicle body 5 by bending the attachment portion 14 with respect to the cover body portion 12 and fixing the tip portion of the attachment portion 14 to a predetermined portion of the vehicle body 5. At this time, the attachment portion 14 supports the bumper cover 10 as a stay.

  However, such a bumper cover has a problem that the root 15 of the mounting portion 14 is easily broken. Since the shape of the mounting portion 14 is abruptly changed with respect to the main body portion 12 of the bumper cover, for example, if the bumper cover 10 is inadvertently collided with an obstacle such as a curb stone, the base portion 15 of the mounting portion 14 There was a problem that stress was concentrated and it broke from here. Further, in order to make it easier to bend the mounting portion 14 during the bumper cover mounting operation, the cover main body portion, the mounting portion, and the boundary portion (hereinafter referred to as a hinge portion) are often formed thinner than the surroundings. There is also a problem that the thinned hinge part is easily broken.

  Therefore, in Patent Document 1 below, as shown in FIG. 5, a rib 102 protruding from the bumper cover 100 toward the vehicle body is provided. Since the rib 102 is provided, when the obstacle 104 collides, the rib 102 comes into contact with the bread palace force 106 on the vehicle body side. Thereby, deformation of the bumper cover 100 is suppressed, and stress concentration on the root of the mounting portion 108 and the hinge portion 110 is avoided as much as possible.

JP 2000-326806 A

  However, even in the bumper cover of the conventional example, when it collides with an obstacle, the root of the mounting portion or the hinge portion may break. About the base periphery of the attachment part of such a resin bumper cover, it is desired to further improve the rigidity.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a bumper cover having a structure in which the rigidity around the base of the mounting portion is further improved while being mounted on a vehicle body.

  A bumper cover according to the present invention protrudes from a cover main body part that constitutes a part of the exterior of the vehicle, and is bent and aligned with a predetermined part of the vehicle body, thereby engaging the vehicle body. An attachment portion to which the bumper cover is attached; a rib protruding from the cover main body portion and extending toward the base portion of the attachment portion; and the attachment portion abuts when the attachment portion is aligned with a predetermined part of the vehicle body It is characterized by having. When the attachment portion is aligned with a predetermined part of the vehicle body, the attachment portion comes into contact with a rib protruding from the cover main body portion.

  Here, the rib can be formed with a rib protruding portion that protrudes toward the mounting portion, and at the same time, the mounting portion can be inserted into the mounting portion corresponding to the rib protruding portion. Is preferably formed. As a result, when the attachment portion is aligned with a predetermined part of the vehicle body, the rib protrusion is inserted into the insertion hole, and the rib and the base portion of the attachment portion are engaged.

  According to the bumper cover of the present invention, the rigidity around the root of the mounting portion can be further improved.

  Embodiments according to the present invention will be described below in detail with reference to the drawings.

  First, an outline of a vehicle to which the bumper cover according to the present embodiment is applied will be described. FIG. 1 shows a state in which the bumper cover 10 according to the first embodiment or the bumper cover 10a according to the second embodiment is mounted on the vehicle 1. As shown in FIG. 1, bumper covers 10 and 10 a are attached to the vehicle 1 in front and rear (in the direction indicated by arrow Y in FIG. 1). These bumper covers 10, 10 a constitute a part of the exterior of the vehicle 1 by being attached to the vehicle body 5. Therefore, when the vehicle 1 collides with an obstacle ahead or behind, the bumper covers 10 and 10a first come into contact with the obstacle. Since these bumper covers 10 and 10a are made of a synthetic resin and have a plate-like cross section, when the obstacle collides with the bumper covers 10 and 10a, the bumper covers 10 and 10a themselves are bent and deformed. The impact input to the vehicle body 5 can be mitigated. Here, the vehicle body 5 may be any member as long as it is a member constituting the vehicle 1, and generally indicates a radiator support, a bumper reinforcement, or the like. The difference between the bumper covers 10 and 10a is the structure of the mounting portion, and details thereof will be described later.

[First Embodiment]
Each part of the bumper cover 10 according to the first embodiment will be described with reference to FIGS. 2 and 3. 2 is a bottom perspective view of the bumper cover 10 according to the first embodiment viewed from the direction indicated by the arrow A in FIG. 1, and FIG. 3 is a cross-sectional view of the portion indicated by the arrow B in FIG. . Here, as an example, the bumper cover 10 mounted on the front side of the vehicle will be described, and the shape and direction of each part of the cover will be described assuming that the cover is mounted on the vehicle body 5.

  As shown in FIG. 2, the bumper cover 10 has a cover main body 12 that constitutes a part of the exterior of the vehicle 1. The cover main body 12 is formed of a synthetic resin according to the exterior shape of the vehicle 1 and is formed of a thin plate member. Therefore, when an obstacle comes into contact with the cover body 12, it can be bent and deformed.

  A mounting portion 14 for mounting the bumper cover 10 to the vehicle body 5 protrudes from the outer edge 22 of the cover main body portion 12. The attachment portion 14 protrudes from the cover main body portion 12 via the hinge portion 24 and extends from the cover main body portion 12 toward the outside thereof.

  On the other hand, ribs 20 protrude from the surface on the back side of the cover body 12 in a direction perpendicular to the surface. The rib 20 extends toward the attachment portion 14 so as to be perpendicular to the hinge portion 24. The mounting portion 14, the rib 20, and the hinge portion 24 are formed integrally with the cover main body portion 12. Details of each of these parts will be described below with reference to FIG.

  The attachment portion 14 protrudes from the outer edge 22 of the cover main body portion 12 via a hinge portion 24 and extends outward from the cover main body portion 12, in this embodiment, toward the rear of the vehicle (direction indicated by arrow Y). Yes. The attachment portion 14 includes a base portion 16 extending from the hinge portion 24 and a tip portion 28 extending further outward from the base portion 16 and aligned with a predetermined portion 26 of the vehicle body 5. A circular through hole 32 is formed in the front end portion 28 of the mounting portion 14 at substantially the center thereof, and a mounting bolt 34 for fixing the mounting portion 14 to the vehicle body 5 can be passed therethrough. When the mounting portion 14 is fixed to the vehicle body 5, the tip portion 28 is aligned with a predetermined portion 26 of the vehicle body 5, the mounting bolt 34 is inserted into the through hole 32, and rotated to fasten the bolt 34 and the vehicle body 5. To do. At this time, the tip portion 28 of the attachment portion 14 functions as a seating surface of the attachment bolt 34.

  The hinge portion 24 is a boundary portion between the cover main body portion 12 and the attachment portion 14, and a groove 36 is formed on the back surface 13 side of the bumper cover 10. That is, the hinge portion 24 is thinner than the surrounding cover body portion 12 and the attachment portion 14. By bending and deforming the thinned and formed hinge portion 24, the attachment portion 14 can be easily placed on the back surface 13 side of the bumper cover 10 with respect to the cover body portion 12 (in the direction indicated by arrow D in FIG. 3). Can be folded.

  On the other hand, a rib 20 is provided on the back surface 13 side of the cover body 12. The rib 20 protrudes in a direction perpendicular to the back surface 13 of the cover main body 12, in this embodiment, upward of the vehicle (the direction indicated by the arrow Z). Further, the rib 20 extends to the hinge portion 24 with the back surface 13 of the cover main body portion 12 facing the base portion 16 of the mounting portion 14 and, in this embodiment, toward the rear of the vehicle (the direction indicated by the arrow Y). . The rib 20 has a plate shape parallel to the vehicle side surface (a plane constituted by the arrows Z and Y), and is integrally formed with the cover main body 12. In addition, the rib 20 has a triangular shape when viewed from the side of the vehicle 1 (the direction indicated by the arrow X), and has a flat contact surface 38 at the end on the hinge portion 24 side. The abutment surface 38 is set so that the base portion 16 of the attachment portion 14 abuts vertically when the distal end portion 28 of the attachment portion 14 is aligned with the predetermined portion 26 of the vehicle body 5.

  Next, attachment of the bumper cover 10 according to the present embodiment to the vehicle body 5 will be described with reference to FIG. First, in a state before the bumper cover 10 is attached to the vehicle body 5, as shown by a solid line in FIG. 3, the attachment portion 14 is not bent but is formed in this state. The periphery of the hinge portion 24 of the cover main body portion 12 and the base portion 16 of the attachment portion 14 are formed to be as flat as possible.

  Then, the attachment portion 14 is bent with respect to the cover main body portion 12, and the tip end portion 28 of the attachment portion 14 is aligned with the predetermined portion 26 of the vehicle body 5. The attachment portion 14 is bent toward the back surface 13 side of the cover main body portion 12 as indicated by the arrow D in the attachment portion 14. The thinned hinge portion 24 is bent and deformed, and the attachment portion 14 rotates about the hinge portion 24 as an axis.

  Then, the base portion 16 of the attachment portion 14 comes into contact with the contact surface 38 of the rib 20. The position of the attachment portion 14 at this time is shown by a two-dot chain line in FIG. The front end portion 28 of the attachment portion 14 is aligned with a predetermined portion of the vehicle body 5.

  As described above, when the attachment portion 14 is bent and the tip end portion 28 is aligned with the predetermined portion 26 of the vehicle body 5, the base portion 16 of the attachment portion 14 comes into contact with the contact surface 38 of the rib 20.

  Further, a bolt 34 is inserted from the through hole 32 in the distal end portion 28 of the mounting portion 14 and screwed into a nut 44 on the vehicle body 5 side. As a result, the vehicle body 5, for example, the radiator support / lower, and the mounting portion 14 of the bumper cover 10 are fastened.

  As described above, in the bumper cover 10 of the first embodiment, the rib 20 formed integrally with the cover main body portion 12 is in contact with the base portion 16 of the attachment portion 14 after being mounted on the vehicle 1. For this reason, the force input to the cover main body 12 due to a collision with an obstacle or the like is transmitted to the base 16 of the mounting portion 14 not only through the hinge portion 24 but also through the rib 20.

  Therefore, stress concentration on the hinge portion 24 can be reduced as compared with the case where the rib 20 that contacts the attachment portion 14 is not provided. Thereby, the rigidity of the base periphery of the bumper cover 10 attachment part 14, especially the rigidity of the vehicle 1 front-back direction (for example, the direction shown by arrow Y) can be improved more. Note that the rigidity can be further increased by bonding the contact surface 38 of the rib 20 and the base 16 of the mounting portion 14.

[Second Embodiment]
A bumper cover 10a according to the second embodiment will be described with reference to FIG. FIG. 4 is a bottom perspective view of the bumper cover 10a of the second embodiment, viewed from the direction indicated by the arrow A in FIG. In addition, about the structure which is common with the bumper cover 10 of 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  In the bumper cover 10a of the second embodiment, the rib 20a is formed with a rib protrusion 40 that protrudes toward the mounting portion on the abutment surface 38, and in accordance with this, the mounting portion 14a has a base portion thereof. It differs from the bumper cover 10a of 1st Embodiment by the point by which the penetration hole 30 corresponding to the rib protrusion part 40 is formed in 16a.

  In the bumper cover 10a of the second embodiment, the base portion 16a of the mounting portion 14a is formed with an insertion hole 30 at the substantially center thereof, having a rectangular slot shape through which a plate piece can be inserted. On the other hand, the rib contact portion 38 of the rib 20a is provided with a rib protrusion 40 that protrudes toward the base portion 16a of the attachment portion 14a. The rib protruding portion 40 is a rectangular plate piece integrally formed with the rib 20a, and corresponds to the insertion hole 30 in the base portion 16a of the mounting portion 14a. That is, the shape of the rib protrusion 40 is formed to engage with the insertion hole 30 in the base portion 16a of the attachment portion 14a.

  Next, attachment of the bumper cover 10a according to the present embodiment to the vehicle body 5 will be described with reference to FIG. First, the attachment portion 14 a is bent with respect to the cover body portion 12. The hinge portion 24 is bent and deformed, and the attachment portion 14a rotates about the hinge portion 24 as an axis. At the same time, the rib protrusion 40 protruding from the contact surface 38 of the rib 20a is inserted into the insertion hole 30 in the base portion 16a of the attachment portion 14a. As shown by a two-dot chain line in FIG. 4, the base portion 16a of the mounting portion 14a contacts the contact surface 38 of the rib 20a, and the distal end portion 28 of the mounting portion 14a is aligned with a predetermined portion of the vehicle body 5. The At this time, the rib protrusion 40 protruding from the contact surface 38 of the rib 20a is engaged with the insertion hole 30 in the base portion 16a of the attachment portion 14a.

  As described above, when the attachment portion 14a is bent and the distal end portion 28 is aligned with a predetermined portion of the vehicle body 5, the base portion 16a of the attachment portion 14a comes into contact with the contact surface 38 of the rib 20a and the rib 20a and the attachment portion. The base 16a of 14a is engaged.

  Further, the mounting portion 14 a of the bumper cover 10 a and the vehicle body 5 are fastened by mounting bolts 34 and nuts 44. In addition to this, the front edge 46 of the rib protrusion 40 that penetrates the insertion hole 30 of the mounting portion 14a is caulked, that is, bent and crushed, so that the rib 20a of the cover main body 12 and the mounting portion 14a The base portion 16a is coupled. In place of this “caulking”, other bonding methods such as vibration welding and bonding with an adhesive may be used.

  As described above, in the bumper cover 10a of the second embodiment, the rib protruding portion 40 provided on the rib 20a of the cover main body 12 is inserted into the insertion hole 30 in the base portion 16a of the mounting portion 14a. , The rib 20a and the base portion 16a of the mounting portion 14a are engaged. Thereby, the relative rocking | fluctuation between the cover main-body part 12a and the attaching part 14a can be suppressed, and the intensity | strength of the vehicle 1 right-and-left direction (for example, direction shown by arrow X) of the base periphery of the attaching part 14a is made. Can be improved. Furthermore, the rigidity around the base of the mounting portion 14a can be further improved by connecting the tip edge 46 of the rib protruding portion 40 penetrating the insertion hole 30 of the mounting portion 14a with the base portion 16a of the mounting portion 14a. it can.

  By applying the bumper cover of the first and second embodiments to a vehicle, it is possible to suppress vibration of the entire bumper cover due to vibration input from the road surface or wind pressure from the front of the vehicle when the vehicle is traveling. . In addition, when the bumper cover is pushed by hand while the vehicle is stationary, such as during a car wash, the entire bumper cover can be prevented from moving easily, and the quality of the vehicle can be improved.

It is a perspective view of a vehicle in the state where a bumper cover was installed. It is a perspective view of a bumper cover, and is the figure seen from the direction shown by arrow A in FIG. It is a figure which shows the periphery structure of the attaching part of the bumper cover of 1st Embodiment, and is sectional drawing of the site | part shown with the code | symbol B in FIG. It is a figure which shows the periphery structure of the attaching part of the bumper cover of 2nd Embodiment, and is sectional drawing of the site | part shown with the code | symbol B in FIG. It is a figure which shows the surrounding structure of the attaching part of the conventional bumper cover, and is sectional drawing of a vehicle front-back direction.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Vehicle, 5 Car body, 10, 10a Bumper cover, 12, 12a Cover main-body part, 14, 14a Mounting part, 16, 16a Base part, 20, 20a Rib, 24 Hinge part, 26 Predetermined part, 30 Insertion hole, 32 Through-hole , 34 bolt, 38 abutting surface, 40 rib protrusion, 44 nut, 100 bumper cover, 102 rib, 104 obstacle, 108 mounting portion, 110 hinge portion.

Claims (2)

A bumper cover to be mounted on the vehicle body,
A cover main body constituting a part of the exterior of the vehicle;
A mounting portion that protrudes from the cover body, is bent and aligned with a predetermined part of the vehicle body, and thereby the bumper cover is attached to the vehicle body;
A rib that protrudes from the cover main body and extends toward the base of the mounting portion, and the mounting portion abuts when the mounting portion is aligned with a predetermined part of the vehicle body;
Having a bumper cover. The bumper cover according to claim 1,
The rib is formed with a rib protrusion that protrudes toward the mounting portion.
The mounting part is formed with an insertion hole that can be inserted into the rib protrusion,
A bumper cover, wherein a rib protrusion is inserted into an insertion hole and a rib and a base of the mounting portion are engaged when the mounting portion is aligned with a predetermined part of the vehicle body.

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