JP2008247141A - Vehicle front part structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a frame structure of a front part of a vehicle with improved repairability. <P>SOLUTION: A mounting face 15 is formed at a front end of a front side member upper 10, whose front end is connected to a front side member lower 20 beyond a top of a front wheel W. A front member is directed forward of a vehicle and mounted to the mounting face 15, and the front member is removable from the mounting face 15 and is mounted movably upward and downward, so as to constitute a vehicle front structure. Thereby, when damage is light, a front member is removed from the mounting face 15 at the front end of the front side member upper 10, so as to easily exchange and repair the member, and improve compatibility. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vehicle front structure that can change the vertical position of a front side member front, a crash can, and a front bumper beam.

  2. Description of the Related Art As a frame structure of a front part of a vehicle body, a structure in which left and right front side members extending in the longitudinal direction of a vehicle body are arranged in addition to left and right upper frames and left and right chassis members is known (see, for example, Patent Document 1). The engine and the transmission are arranged inside the left and right front side members in the vehicle width direction.

  In such a frame structure, the front wheels may interfere with the front side members during maximum steering, so the front wheels are regulated by the front side member front part in order to improve collision energy absorption performance and the steering angle. There is provided a technique for forming a space that can be entered inward in the vehicle width direction so that the front member portion does not pass between the center region and the engine and transmission (see, for example, Patent Document 2).

  The vehicle body frame structure is located above the center axis of the front wheels, extends from the front pillar lower to the front of the vehicle, and is positioned below the center axis of the front wheels to extend from the front end of the floor to the front of the vehicle. A front side lower member portion; a coupling portion that couples the front upper member portion and the front side lower member portion in front of the front wheel; and a front member portion that extends forward of the vehicle from the coupling portion. In such a vehicle body frame structure, the force input from the front of the vehicle body in the event of a collision or the like is distributed from the left and right front member portions to the front upper member portion and the front side lower member portion.

In the frame structure configured in this manner, a crash can is fixed to the front side of the front side upper member portion via the front member, and front bumpers are attached to the crash can. Therefore, the mounting position to attach the front side member front to the front side upper member part determines the height position of the front bumper, which is an important factor in determining the appearance of the vehicle, and also when the vehicle collides The position where the force is received, in other words, the impact force is applied to the other side of the collision is specified.
Japanese Patent No. 2890938 JP 2006-143178 A

  Conventionally, since the front member is integrally attached to the upper member portion, if they are damaged, even if the damage is light, replacement and repair have been made in a wide range. Moreover, since the mounting position for attaching the front member to the upper member portion cannot be changed, there is a limit to the degree of freedom in design. Also, when the vehicle height was changed, the position of the front bumper also changed accordingly, and the position of the front bumper could not be set appropriately, resulting in a vehicle type with a different vehicle height and poor compatibility.

  An object of the present invention is to solve the above-mentioned problems, and to provide a vehicle front structure that facilitates replacement and repair of parts when damaged, and has improved compatibility.

  In order to solve the above-described problems, the present invention has a front frame structure of a vehicle configured as follows.

  1. An attachment surface is formed on the front end portion of the front side member upper, which is connected to the front side member lower, beyond the upper part of the front wheel, and the front member is attached to the attachment surface facing the front of the vehicle. The vehicle front part structure is configured such that the front member can be removed from the mounting surface. For example, it can be removed by bolting.

  2 and 1, in the vehicle front structure, the mounting surface is flat and mounting surfaces provided on the left and right front side member uppers are formed in the same plane, and the mounting position of the front member is It can be changed along the mounting surface.

  3. In the vehicle front structure according to 3, 2, by providing a flange on the front member, forming a plurality of bolt holes in at least one of the flange and the mounting surface, and selecting the bolt holes and assembling the bolts. The mounting position of the front member can be changed.

  4. The vehicle front structure according to claim 4, wherein a flange is provided on the front member, a slit-like long hole is formed in the flange, and a bolt assembled in the long hole is fastened to fasten the mounting position of the front member. Can be changed.

  5. In the vehicle front structure according to any one of 5, 1-4, a crash can is attached to the front member on the front side of the vehicle, and a front bumper is provided via the crash can.

The vehicle front structure according to the present invention has the following effects.
Since the front member is attached to the mounting surface of the front side member upper with a bolt or the like, the front part from the front member is removed from the front side member upper, and replacement and repair are facilitated.

  Since the mounting position of the front member can be changed vertically with respect to the front side member upper, compatibility is improved by changing the height of the front bumper beam, that is, the front bumper for the same chassis. It is done.

  An embodiment of a vehicle front structure according to the present invention will be described with reference to the drawings. FIG. 1 shows an almost entire frame structure of an automobile (vehicle). Hereinafter, the forward direction of the car is defined as the front (front side), and the rear (rear side) and left and right width directions are defined based on this direction. A direction extending in the width direction is defined as an outward direction (outside). Also, the direction in which gravity acts is the downward direction (lower side), and the direction against gravity is the upward direction (upper side). In the figure, arrows X, Y, and Z indicate three orthogonal directions, arrow X indicates the front of the vehicle, arrow Y indicates the vehicle width direction left side, and arrow Z indicates the vehicle upward direction. Note that description of the same configuration on the left and right may be omitted as appropriate.

  The vehicle frame structure includes a front side member upper 10 and a front side member front 11 at the front, a front pillar 12 in front of the passenger compartment 13, and a front pillar upper 14 (on the side roof rail) at the top of the front pillar 12. Are connected), and a side sill 16 is connected to the lower portion of the front pillar 12. Further, as shown in FIG. 4, a front side member lower 20 is connected to the lower portion of the front pillar 12 toward the front. The front side member lower 20 is a substantially H-shaped member in plan view, is below the front side member upper 10, is connected to the front ends of the left and right side sills 16, and has a front wheel W having substantially the same height as the side sills 16. It passes through the lower part of the axle and extends forward.

  The front side member upper 10 is attached mainly to the upper part of the front pillar 12, and as it extends forward from the upper part of the front pillar 12, it enters the vehicle body over the front wheel W and curves downward, Is connected to the front end of the front side member lower 20.

  FIG. 2 shows the structure of the front end of the front side member upper 10 according to the first embodiment. FIG. 2 is a cross-sectional view of the front side member upper 10 taken along the front-rear direction of the vehicle. The left side of the figure corresponds to the front side of the vehicle. A mounting surface 15 is formed at the front end of the front side member upper 10 as shown in the drawing. The mounting surface 15 is flat and is provided with bolt holes 17 from the front.

  The front side member front 11 has a flange 19 on the end surface at the rear end, and is fastened integrally and detachably to the mounting surface 15 by fastening a bolt 18 to the bolt hole 17. As shown in FIG. 1, a crash can 22 is fixed to the front side member front 11 and a front bumper beam 24 is attached via the crash can 22. A front bumper 28 indicated by a two-dot chain line in FIG. 4 is attached to the front bumper beam 24.

  Since it is configured in this manner, if the impact is received from the front of the vehicle and, for example, the crash can 22 and the front side member front 11 are damaged, the bolt 18 is removed from the mounting surface 15 to remove the front side. The front part from the member front 11 can be removed integrally from the mounting surface 15 of the front side member upper 10, and the replacement or repair of such a part can be facilitated.

  FIG. 3 shows the structure of the front end portion of the front side member upper 10 according to the second embodiment.

  An attachment surface 15 facing the front of the vehicle is formed at the front end of the front side member upper 10 as in the first embodiment. The mounting surface 15 is flat and perpendicular to the vertical direction, and the mounting surfaces 15 of the left and right front side member uppers 10 are parallel to each other and formed in the same plane. As shown in FIG. 3, a plurality of mounting holes 25 are formed in the mounting surface 15 at a predetermined interval. Each mounting hole 25 has a diameter through which the bolt 18 passes, and a nut (not shown) on the back surface. The bolt 18 can be screwed together.

  On the other hand, a plurality of mounting holes 26 are formed in the flange 19 of the front side member front 11 corresponding to the mounting intervals of the mounting holes 25. The mounting hole 25 and the mounting hole 26 are formed so as to coincide with each other appropriately at each position even when the flange 19 is moved in the vertical direction with respect to the mounting surface 15.

  Therefore, in such a structure, the front side member front 11 can be easily replaced, and the mounting position of the front side member front 11 can be appropriately changed in the vertical direction by selecting the mounting holes 25 and 26. As a result, the height of the front bumper beam 24 is adjusted with respect to the front side member upper 10 so that the position of the front bumper 28 is the same even in a vehicle type having a different vehicle height, or the front bumper 28 The design can be changed by changing the position 28.

  FIG. 5 shows a third embodiment. In this example, slit-like long holes 27 are formed in the flange 19, and the number of mounting holes 25 formed in the mounting surface 15 of the front side member upper 10 is reduced. Even if comprised in this way, the front side member front 11 can be easily removed with respect to the front side member upper 10, Furthermore, the position of the front side member front 11 can be changed suitably to an up-down direction, and the above-mentioned The same effect can be obtained. In such a case, the attachment hole 25 may be formed as a slit-like long hole.

  In the second and third embodiments, the attachment surface 15 is perpendicular to the ground. However, the attachment surface 15 may be inclined at an angle with respect to the ground. Further, a step may be provided on the attachment surface 15, and the front side member front 11 may be attached to each step. Furthermore, the configuration in front of the front side member front 11 is not limited to the above-described example.

The perspective view which shows the flame | frame of the vehicle provided with one Embodiment of the vehicle front part structure concerning this invention. Sectional drawing which shows the attachment surface of a front side member upper. The disassembled perspective view which shows the attachment surface of a front side member upper. The side view which shows the flame | frame of a vehicle. The disassembled perspective view which shows the attachment surface of a front side member upper.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Front side member upper 11 ... Front side member front 12 ... Front pillar lower 15 ... Mounting surface 22 ... Crash can 24 ... Front bumper beam 25, 26 ... Mounting hole 27 ... Long hole

Claims (5)

A mounting surface is formed on the front end portion of the front side member upper which is connected to the front side member lower through the front end of the front wheel,
A vehicle front structure characterized in that a front side member front is attached to the attachment surface with the front facing the front of the vehicle, and the front side member front is removable from the attachment surface.   The mounting surface is flat, and the mounting surfaces provided on the left and right front side member uppers are formed parallel to each other in the same plane, so that the mounting position of the front member can be changed along the mounting surface. The vehicle front part structure according to claim 1.   A flange is provided on the front side member front, a plurality of bolt holes are formed in at least one of the flange and the mounting surface, and the mounting position of the front member can be changed by selecting the bolt holes and assembling the bolts. The vehicle front part structure according to claim 2, wherein   A flange is provided at the front of the front side member, a slit-like long hole is formed in the flange, and the mounting position of the front member can be changed by fastening a bolt assembled to the long hole. The vehicle front structure according to claim 2.   The vehicle front structure according to any one of claims 1 to 4, wherein a crash bump is attached to a front side of the vehicle on the front side member front, and a front bumper beam is provided via the crash can. .

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