JP2015140090A - Vehicle body front structure of automobile and its assembling method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the generation of rust on front end faces of both front side members and an assembling face of a reinforcement member by making electrodeposition films adhere to the front end faces of the front side members and to the assembling face of the reinforcing member.SOLUTION: When fastening a bumper reinforcement member 3 between front ends of both front side members 1 for electrodeposition with bolts in a state that a radiator support 2 is not interposed by forming two pieces of protrusions 5 at an assembling face of the bumper reinforcement member 3, a clearance is formed between the front end faces of both the front side members 1 and the assembling face of the bumper reinforcement member 3 to both the front side members 1, and electrodeposition films are formed on both the front end faces of both the front side members 1 and the assembling face of the bumper reinforcement member 3.

Description

  The present invention includes a pair of left and right front side members that extend in the front-rear direction of the vehicle body, a resin radiator support that is supported by the front end portions of the front side members and that holds the radiator, and the front side members of the two front side members via the radiator support. The present invention relates to a vehicle body front part structure including a reinforcing member that is bridged between front ends and assembled and a method for assembling the same.

  Conventionally, a vehicle body skeleton member and a plurality of outer plate parts constituting a vehicle body are separated from the vehicle body skeleton member and each outer plate component, and each of the vehicle body skeleton member and each outer plate component is separately electrodeposited. It has been proposed to assemble the vehicle body frame member and each outer plate part (see, for example, Patent Document 1).

Japanese Examined Patent Publication No. 7-469 ("Example" on page 2 and Fig. 1)

  However, in the method described in Patent Document 1 described above, as a vehicle body skeleton member, for example, a pair of left and right front side members extending in the front-rear direction of the vehicle body, and a radiator supported by the front end portions of both front side members are held. If you have a resin radiator support and a bumper reinforcement member that is installed across the front end of both front side members via the radiator support, the radiator support is made of resin and made of metal. Since the material is different from the bumper reinforcement member, both the metal front side member and bumper reinforcement are removed with the radiator support removed and the bumper reinforcement member attached directly to the front end surfaces of both front side members with bolts, etc. Me Perform electrodeposition coating of Tomenba, then of removing the bumper reinforcement member, it is performed to assemble again by bolts or the like bumper reinforcement member to the front end surfaces of both the front side member via a radiator support.

  However, when the radiator support is removed and the bumper reinforcement members are directly attached to the front end surfaces of both front side members with bolts or the like, both front side members and bumper reinforcement members are electrodeposited. As a result, the front end surfaces of both front side members and the assembly surfaces of the bumper reinforcement members to both front side members are brought into close contact with each other. Electrodeposition is applied to the front end surfaces of both front side members and the assembly surfaces of the bumper reinforcement members. After the bumper reinforcement member is removed and the radiator support is installed between both front side members and the bumper reinforcement member, the electrodeposition coating film does not adhere. Front side The front end surface and / or assembling surface of the bumper reinforcement member of Nba, there is a risk that rust by water entering from the outside may occur.

  The present invention attaches an electrodeposition coating film to the front end surfaces of the left and right front side members and the mounting surfaces of the reinforcing members, so that rust is not generated on the front end surfaces of both front side members and the mounting surfaces of the reinforcing members. It aims to be able to prevent.

In order to achieve the above object, a vehicle body front structure of the present invention holds a radiator by being supported by a pair of left and right front side members extending in the front-rear direction of the vehicle body and the front end portions of both front side members. In a vehicle body front structure including a resin radiator support and a reinforcing member that is assembled between the front ends of the front side members via the radiator support, a front end surface of each of the front side members. Or the protrusion formed in the assembly surface to each of the both front side members of the reinforcing member,
A recess formed in abutment position of each of the two protrusions of the radiator support and into which the two protrusions are fitted, and in a state where the reinforcing members are directly assembled to the front end surfaces of the two front side members, Both front side members and the reinforcing member are electrodeposited (Claim 1).

The method of assembling the vehicle body front structure of the present invention includes a pair of left and right front side members extending in the front-rear direction of the vehicle body, and a resin radiator that is supported by the front end portions of both front side members and holds the radiator. In the assembling method of the vehicle body front structure of an automobile, comprising: a support; and a reinforcing member that is assembled between the front ends of the two front side members via the radiator support. Forming a protrusion on the surface or the assembly surface of the reinforcing member to each of the front side members,
In the state where the recesses into which the two protrusions are fitted are formed at the contact positions of the two protrusions of the radiator support, and the reinforcing members are directly assembled to the front end surfaces of the two front side members, A side member and the reinforcing member are electrodeposited, the electrodeposited reinforcing member is temporarily removed, and the reinforcing member is assembled to the front end surfaces of the front side members via the radiator support. Claim 2).

  According to the first and second aspects of the present invention, when both the front side members and the reinforcing members are electrodeposited in a state in which the radiator support is removed and the reinforcing members are directly assembled to the front end surfaces of the two front side members, respectively. Since the protrusions cause a gap between the front end surfaces of the front side members and the mounting surfaces of the reinforcing members to the front side members, the front end surfaces of the front side members and the mounting surfaces of the reinforcing members are the same as in the prior art. It is possible to form an electrodeposition coating on the front end surfaces of both front side members and the assembly surface of the bumper reinforcement member, and then remove the reinforcing member once to attach both radiator supports. Even when the front side member and the reinforcing member are installed, both front side members are The assembling surface of the front end surface and / or reinforcing member can be prevented that the rust is generated, it is possible to improve the anti-corrosion performance.

  In addition, when the radiator support is assembled between the front side members and the reinforcing member by forming a recess in which each of the protrusions is fitted and inserted at the contact position of each of the protrusions of the radiator support. In addition, the adhesion between the radiator support, both the front side members and the reinforcing member can be improved, and high assembling strength can be ensured.

1A and 1B show a front body structure of an automobile according to an embodiment of the present invention, in which FIG. 1A is a perspective view of a part in an assembled state, and FIG. It is sectional drawing in the state in the middle of the assembly | attachment of FIG. It is sectional drawing in a different state in the middle of the assembly | attachment of FIG.

  An embodiment of a vehicle body front structure according to the present invention will be described in detail with reference to FIGS. 1 to 3. Here, FR and UP in FIG. 1 indicate the front and the upper side in a state of getting on the automobile, the left and right indicate the vehicle width direction, and FIG. 1 shows only the right front side member.

  As shown in FIG. 1, the vehicle body front portion structure in the present embodiment is a resin having a pair of left and right front side members 1 having a rectangular shape in the longitudinal section extending in the front-rear direction of the vehicle body, and a U-shaped cross section for holding a radiator. A radiator support 2 made of metal, a flat base portion 3a, and a metal bumper reinforcement member 3 that is a reinforcing member of a bumper that includes a flange portion 3b with a peripheral edge thereof slightly bent rearward.

  The front end portions of both front side members 1 are inserted inside the radiator support 2 having a U-shaped cross section, and the left and right end portions of the bumper reinforcement member 3 are in contact with each other from the front thereof. A bolt 4 is screwed into a pre-formed bolt hole formed in the front end surface of 1, the radiator support 2 and the bumper reinforcement member 3, and the bumper reinforcement is interposed between the front ends of both front side members 1 via the radiator support 2. Member 3 is assembled.

  Here, as shown in FIG. 2, two projections 5 are formed on the assembly surface of the bumper reinforcement member 3 facing the front end surfaces of both front side members 1, and are shown in FIG. Thus, two recesses 6 into which the projections 5 are fitted are formed at the contact positions of the projections 5 of the radiator support 2. In forming the two protrusions 5 on the assembly surface of the bumper reinforcement member 3, a position that does not interfere with the bolt hole 4a for the bolt 4 used for assembling the bumper reinforcement member 3 is selected. It is desirable to do.

  Then, in a state where the bumper reinforcement member 3 is directly assembled to the front end surfaces of both front side members 1, both the front side member 1 and the bumper reinforcement member 3 are electrodeposited together and electrodeposited. The bumper reinforcement member 3 is once removed, and then the bumper reinforcement member 3 is assembled with bolts to the front end surfaces of the front side members 1 via the radiator support 2 and the radiator support 2 is interposed. The assembly of the bumper reinforcement member 3 to both the front side members 1 that have been applied is completed.

  By forming the protrusions 5 in this way, when the bumper reinforcement member 3 is fastened with bolts between the front ends of the front side members 1 for electrodeposition coating without the radiator support 2 interposed, A gap is formed between the front end surface of the front side member 1 and the mounting surface of the bumper reinforcement member 3 to both front side members 1, and the front end surface of both front side members 1 and the bumper reinforcement member 3 are mounted. The surfaces are not in close contact as in the prior art, and an electrodeposition coating film is formed on both the front end surfaces of both front side members 1 and the assembly surfaces of the bumper reinforcement members 3.

  Further, by forming two protrusions 5 side by side on the assembly surface of the bumper reinforcement member 3 facing the front end surfaces of the front side members 1, the front end surfaces of the front side members 1 are arranged between the front ends. When the bumper reinforcement member 3 is fastened by the bolt, the bumper reinforcement member 3 can be held in contact with the front end surfaces of the front side members 1 without causing the bumper reinforcement member 3 to rattle.

  Therefore, according to the above-described embodiment, a gap is formed between the front end surfaces of both front side members 1 and the mounting surfaces of the bumper reinforcement members 3 on both front side members by the projections 5 during electrodeposition coating. Therefore, it is possible to prevent the front end surfaces of both front side members 1 and the assembly surfaces of the bumper reinforcement members 3 from coming into close contact with each other, and the front end surfaces of both front side members 1 and the bumper reinforcement members 3 can be prevented. An electrodeposition coating film can be formed on the assembly surface. As a result, even if the bumper reinforcement member 3 is once removed after that and the radiator support 2 is interposed between the front side members 1 and the bumper reinforcement member 3, both front sides are affected by water entering from the outside. It is possible to prevent rust from occurring on the front end surface of the member 1 and / or the assembly surface of the bumper reinforcement member 3, thereby improving rust prevention performance.

  Further, since the recesses 6 into which the projections 5 are fitted are formed at the contact positions of the projections 5 of the radiator support 2, the radiator support 2 is interposed between the front side members 1 and the bumper reinforcement member 3. When assembled in this manner, the radiator support 2, the front side members 1 and the bumper reinforcement member 3 can be brought into close contact with each other, and high assembling strength can be ensured.

  Further, since the two protrusions 5 are formed side by side vertically on the front end surfaces of the front side members 1 of the bumper reinforcement members 3, bumpers are provided between the front ends of the front side members 1 with bolts. When the reinforcement member 3 is fastened, the bumper reinforcement member 3 can be held in contact with the front end surfaces of both front side members 1 without the bumper reinforcement member 3 rattling, and the bolts can be easily aligned. Thus, the fastening work of the bumper reinforcement member 3 can be easily performed.

  The present invention is not limited to the above-described embodiment, and various modifications other than those described above can be made without departing from the spirit of the present invention.

  For example, in the above-described embodiment, a case has been described in which two protrusions 5 are formed side by side on the assembly surface of the bumper reinforcement member 3 that faces the front end surfaces of both front side members 1. Two protrusions 5 may be formed on each front end surface of the front side member 1.

  Further, the protrusions 5 may be formed one by one or three or more instead of two.

  Further, the reinforcing member is not limited to the bumper reinforcement member 3 described above, and may be any member that is electrodeposited together with the Freon and the side member 1.

1 ... front side member 2 ... radiator support 3 ... bumper reinforcement member (reinforcing member)
5 ... Protrusion 6 ... Recess

Claims (2)

A pair of left and right front side members extending in the front-rear direction of the vehicle body, a resin radiator support supported by the front end portions of the front side members and holding the radiator, and between the front ends of the front side members via the radiator support In the front body structure of an automobile provided with a reinforcing member that is spanned and assembled,
A protrusion formed on a front end surface of each of the front side members or an assembly surface of the reinforcing member to each of the front side members;
A recess formed in each of the projections of the radiator support and fitted in each of the projections;
A front body structure for an automobile, wherein both the front side members and the reinforcing members are electrodeposited in a state where the reinforcing members are directly assembled to the front end surfaces of the front side members. A pair of left and right front side members extending in the front-rear direction of the vehicle body, a resin radiator support supported by the front end portions of the front side members and holding the radiator, and between the front ends of the front side members via the radiator support In the method of assembling the vehicle body front part structure of the automobile comprising a reinforcing member that is spanned and assembled,
Protrusions are formed on the front end surfaces of each of the front side members or the mounting surfaces of the reinforcing members to the front side members,
Forming a recess into which each of the two protrusions is fitted and inserted into a contact position of each of the two protrusions of the radiator support;
In a state where the reinforcing members are directly assembled to the front end surfaces of the front side members, the front side members and the reinforcing members are electrodeposited.
Once the electrodeposited reinforcing member is removed,
A method of assembling a vehicle body front structure for an automobile, wherein the reinforcing member is assembled to the front end surfaces of the two front side members via the radiator support.

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