JP6638643B2 - Vehicle front structure - Google Patents

Description

  The present invention relates to a vehicle front structure.

  In the vehicle front structure described in Patent Document 1, a body-side bracket is provided on the inner surface of each of the left and right front pillars. A rod-shaped instrument panel reinforcement extending in the vehicle width direction is attached to the body-side bracket. The instrument panel reinforcement includes instrument panel-side brackets at both ends thereof, and the instrument panel-side brackets are fastened and fixed to each body-side bracket by bolts or the like.

  In the vehicle front structure described in Patent Document 1, when attaching the instrument panel-side bracket of the instrument panel reinforcement to the body-side bracket, the instrument panel-side extension of the instrument panel-side bracket of the instrument panel reinforcement is attached to the body-side bracket. Place it on the extension on the body side of the bracket. As a result, the instrument panel reinforcement is supported by the body-side extension of the body-side bracket. By moving the instrument panel bracket forward of the vehicle while maintaining such a support state, the instrument panel bracket is guided to a fastening position with the body bracket. Then, the instrument panel-side bracket is moved until the instrument panel-side bracket and the body-side bracket come into contact with each other, and then the instrument panel-side fastening hole and the body-side fastening hole are fastened and fixed by bolts or the like.

JP-A-2006-150638

  By the way, in order to suppress the traveling noise of the vehicle from being transmitted to the cabin, it is conceivable to provide a silencer having a sound insulation effect so as to cover the inner portion of the body-side bracket in the vehicle width direction. However, if a silencer is provided in the vehicle front structure described in Patent Document 1, when the instrument panel side bracket is moved forward of the vehicle in order to fasten and fix to the body side bracket, the vehicle rear end of the silencer is extended on the instrument panel side. There is a possibility that the silencer may be turned up from the body side bracket by interfering with the tip of the installation portion.

  The vehicle front structure for solving the above-mentioned problems includes a pair of body-side brackets fixed to the left and right inner side surfaces of the vehicle, an instrument panel side provided at both ends of an instrument panel reinforcement extending in the vehicle width direction. A vehicle front structure in which a bracket is attached, and the inside of the body-side bracket in the vehicle width direction is covered with a silencer, and the body-side bracket faces the instrument panel-side bracket in the vehicle front-rear direction. A body-side bracket body having a body-side facing portion; a body-side fastening hole provided in the body-side facing portion; and a body-side extending portion extending inward in the vehicle width direction from the body-side bracket body. The instrument panel side bracket faces the body side facing portion in the vehicle front-rear direction. An instrument panel-side bracket body having an instrument panel-side facing portion, an instrument panel-side fastening hole provided at a position facing the body-side fastening hole in the instrument panel-side facing portion, and a vehicle front side from the instrument panel-side bracket body. An instrument panel-side extension that extends and is in contact with an upper edge of the body-side extension. The silencer is provided between the body-side bracket body and the instrument panel-side extension in the vehicle width direction. And a silencer body that covers a portion of the body-side bracket body inside the vehicle width direction other than a position where the body-side extension is formed, and the same as the instrument panel-side extension in the vehicle up-down direction. A projecting portion provided at a height position and projecting rearward from the vehicle rear end of the silencer body; The body-side facing portion of the body-side bracket body is provided with a concave portion that is provided at the same height position as the instrument panel-side extending portion in the vehicle vertical direction and that is depressed toward the vehicle front side, The distal end portion of the instrument panel-side extending portion is curved inward in the vehicle width direction, and the protruding portion is curved outward in the vehicle width direction, and the distal end portion is formed in the concave portion and the instrument panel side. The gist is that it is located between the facing part.

  In the above configuration, when the instrument panel-side bracket is moved forward of the vehicle so as to be fastened and fixed to the body-side bracket, the projecting portion of the silencer and the instrument panel-side extending portion are adjacent to each other in the vehicle width direction. The projection is curved outward from the rear end of the silencer body in the vehicle width direction. The distal end of the instrument panel-side extending portion is curved inward in the vehicle width direction. That is, the bending direction of the projecting portion of the silencer and the bending direction of the distal end portion of the instrument panel-side extending portion are opposite to each other in the vehicle width direction. Therefore, when the instrument panel-side bracket is moved forward of the vehicle to be fastened to the body-side bracket, the distal end of the instrument panel-side extension does not easily interfere with the distal end of the projection of the silencer. Even if the distal end of the instrument panel-side extension interferes with the silencer projection, the instrument panel-side extension is guided inward in the vehicle width direction because it interferes outside both curved portions, and the silencer is attached to the body-side bracket. It can be prevented from being turned up from the main body.

  Further, in the above configuration, the distal end of the protruding portion is located between the concave portion of the body-side bracket and the instrument panel-side facing portion. For this reason, it is possible to suppress the silencer from being sandwiched between the body-side bracket and the instrument panel-side bracket. Since the body-side bracket and the instrument-panel-side bracket are separated from each other by the thickness of the silencer sandwiched therebetween, it is possible to prevent the body-side bracket and the instrument-panel-side bracket from being properly fastened and fixed.

FIG. 1 is a perspective view showing a body-side bracket and an instrument panel-side bracket to which an embodiment of a vehicle front structure is applied. FIG. 3 is an exploded perspective view of a body side bracket and an instrument panel side bracket. FIG. 3 is a sectional view taken along line 3-3 in FIG. 1. FIG. 4 is a sectional view taken along line 4-4 in FIG. 2.

  Hereinafter, an embodiment of a vehicle front structure will be described with reference to FIGS. 1 to 4, the arrow Fr indicates the front of the vehicle, and the arrow Rr indicates the rear of the vehicle. 1 to 4, an arrow In indicates an inside in the vehicle width direction, and an arrow Out indicates an outside in the vehicle width direction. 1 and 2, the arrow Up indicates the upper part of the vehicle, and the arrow Dw indicates the lower part of the vehicle. In the following description, the right side structure of the left and right structures of the vehicle will be described as an example.

As shown in FIG. 1, a body-side bracket 10 is fixed to the inner side surface of the right front pillar FP of the vehicle.
As shown in FIG. 2, the body-side bracket body 11 of the body-side bracket 10 includes a body-side facing wall portion 13 as a body-side facing portion that is a wall portion that is orthogonal to the vehicle front-rear direction. The body-side facing wall portion 13 has a rectangular plate shape that is long in the vehicle up-down direction. An upper wall 14 extends from an upper edge of the body-side facing wall 13 toward the front of the vehicle. A side wall portion 17 extends from the inner side edge of the body-side facing wall portion 13 in the vehicle width direction toward the vehicle front side. The side wall portion 17 has a shape in which the L-shape is rotated by 180 ° when viewed from above from the inside in the vehicle width direction. More specifically, the length of the upper portion of the side wall portion 17 extending to the vehicle front side is the same as the length of the upper wall portion 14 extending to the vehicle front side, and the lower portion of the side wall portion 17 extends to the vehicle front side. The length is shorter than the upper part. The upper edge of the side wall portion 17 and the side edge of the upper wall portion 14 on the inner side in the vehicle width direction are connected. The body-side bracket body 11 is fixed to the front pillar FP by welding at an outer edge in the vehicle width direction of the body-side facing wall portion 13 and an outer edge of the upper wall portion 14 in the vehicle width direction.

  The body-side facing wall 13 has a body-side fastening hole 15 that penetrates the body-side facing wall 13 in the thickness direction. In the present embodiment, two body-side fastening holes 15 are formed in the body-side facing wall portion 13 so as to be vertically separated from each other.

  A plate-shaped body-side extending portion 18 extends from the front edge of the lower portion of the side wall portion 17 in the body-side bracket body 11. The body-side extending portion 18 has a substantially L-shape as a whole, and the base portion 18f extends toward the front of the vehicle, and the tip portion 18n extends inward in the vehicle width direction from the front end of the base portion 18f. ing.

  As shown in FIG. 2, an instrument panel-side bracket 20 is attached to an end of the rod-shaped instrument panel reinforcement 19 extending in the vehicle width direction in the vehicle width direction. The instrument panel-side bracket body 21 of the instrument panel-side bracket 20 is formed by bending a flat plate material into a substantially U-shaped cross section.

  The pair of side portions 22 of the instrument panel-side bracket body 21 have a flat plate shape, and are orthogonal to the axial direction of the instrument panel reinforcement 19. The pair of side portions 22 are arranged side by side in the vehicle width direction so as to be separated from each other. An instrument panel reinforcement 19 is attached to each side portion 22 so as to penetrate a central portion of the side portion 22. Further, in the vehicle front-rear direction, front ends 21 f of the pair of side portions 22 are connected by an instrument panel-side facing wall portion 23 as an instrument panel-side facing portion facing the body-side facing wall portion 13. The instrument panel-side facing wall portion 23 has a rectangular plate shape that is long in the vehicle up-down direction.

  Two instrument panel-side fastening holes 25 (one of which is shown in FIG. 2) penetrating the instrument panel-side opposing wall portion 23 in the thickness direction are formed in the instrument panel-side opposing wall portion 23. The two instrument panel side fastening holes 25 are vertically separated from each other. The distance between the two instrument panel-side fastening holes 25 is equal to the distance between the body-side fastening holes 15 in the body-side facing wall 13, and each instrument panel-side fastening hole 25 faces each body-side fastening hole 15.

  The instrument panel-side extending portion 28 extends toward the front of the vehicle from a vehicle width direction inner surface 22n of the side portion 22 of the instrument panel-side bracket body 21 that is located inside the vehicle width direction. The instrument panel-side extending portion 28 is located above the position where the body-side extending portion 18 is formed in the body-side bracket 10. The instrument panel side extension portion 28 has a plate shape and extends in the vehicle up-down direction. The distal end portion 28f of the instrument panel-side extending portion 28 is curved inward in the vehicle width direction. A step portion 28s is provided at a lower edge 28d, which is an edge of the instrument panel-side extension portion 28 on the lower side of the vehicle, in the middle in the vehicle front-rear direction. The lower edge 28d of the instrument panel-side extending portion 28 is displaced in the vertical direction of the vehicle at the step 28s. In the lower edge 28d of the instrument panel side extension portion 28, a portion on the vehicle rear side with respect to the step portion 28s is located on the vehicle upper side than a portion on the vehicle front side with respect to the step portion 28s. As shown in FIG. 1, the lower edge 28d of the instrument panel-side extending portion 28 is in contact with the upper edge 18u of the body-side extending portion 18 of the body-side bracket 10 at the step portion 28s.

  The inner portion of the body-side bracket body 11 in the vehicle width direction is covered with a silencer 30 having a sound insulation effect. In this embodiment, the silencer 30 covers substantially the entire inside of the body-side bracket body 11 in the vehicle width direction, and an upper part and a lower part of the silencer 30 reach the front pillar FP. The silencer 30 is formed in a flexible plate shape using glass wool, felt, or the like. The silencer body 31 of the silencer 30 is located between the body-side bracket body 11 and the instrument panel-side extension 28 in the vehicle width direction. A hole 32 is formed in the silencer body 31 at a position facing the position where the body-side extension 18 is formed. In a state where the body-side bracket body 11 is covered by the silencer 30 from the inside in the vehicle width direction, the distal end portion 18n of the body-side extension portion 18 is inserted into the hole 32, and the body-side extension portion extends from the inner surface of the silencer 30 in the vehicle width direction. The distal end portion 18n of the setting portion 18 is in a protruding state. As a result, of the inner portion of the body-side bracket body 11 in the vehicle width direction, the portion other than the formation position of the body-side extending portion 18 is covered by the silencer body 31. A protruding portion 33 protrudes rearward from the vehicle rear end 31r of the silencer main body 31. The projecting portion 33 is provided at the same height position as the instrument panel-side extending portion 28 of the instrument panel-side bracket 20 in the vehicle vertical direction.

  In the body-side facing wall portion 13 of the body-side bracket body 11, a recess 16 that is recessed toward the vehicle front side is provided between the two body-side fastening holes 15 in the vehicle vertical direction. The recess 16 is provided above the vehicle in the vehicle vertical direction from the height of the body-side extending portion 18 and at the same height as the instrument panel-side extending portion 28. The projection 33 of the silencer 30 is located in the recess 16 of the body-side bracket body 11. That is, the protruding portion 33 of the silencer 30 is curved outward in the vehicle width direction, and the tip 33t side thereof is located inside the recess 16.

  As shown in FIGS. 1 and 3, a bolt (not shown) is inserted into the body-side fastening hole 15 and the instrument-panel-side fastening hole 25 in a state where the body-side facing wall portion 13 and the instrument panel-side facing wall portion 23 are in contact with each other. It has been inserted. Thus, the instrument panel reinforcement 19 is attached to the body side bracket 10 using the instrument panel side bracket 20.

Next, the operation of the present embodiment will be described together with the method of attaching the instrument panel-side bracket 20 to the body-side bracket 10.
As shown in FIGS. 2 and 4, first, the projecting portion 33 of the silencer 30 is bent outward in the vehicle width direction, so that the silencer 30 is inserted into the recess 16 of the body-side bracket body 11 of the body-side bracket 10. The protrusion 33 is arranged. Then, the body-side bracket 10 and the instrument panel-side bracket 20 are arranged so that the body-side opposed wall 13 of the body-side bracket body 11 and the instrument panel-side opposed wall 23 of the instrument panel-side bracket body 21 face each other.

  Then, the instrument panel-side bracket 20 is moved to the front of the vehicle to bring the instrument panel-side bracket 20 closer to the body-side bracket 10. At this time, the distal end portion 28f of the instrument panel-side extending portion 28 passes through a position adjacent to the projecting portion 33 of the silencer 30 in the vehicle width direction. Then, the instrument panel-side extending portion 28 is placed on the vehicle upper side of the body-side extending portion 18 of the body-side bracket 10, and the lower edge 28 d of the instrument panel-side extending portion 28 abuts on the upper edge 18 u of the body-side extending portion 18. As a result, the instrument panel reinforcement 19 is supported by the body-side extension 18. By moving the instrument panel-side bracket 20 forward of the vehicle while maintaining such a support state, the instrument panel-side bracket 20 is guided to a fastening position with the body-side bracket 10.

  As shown in FIGS. 1 and 3, when the instrument panel-side bracket 20 is moved until the body-side bracket 10 and the instrument-panel-side bracket 20 come into contact with each other, a step at the lower edge 28 d of the instrument panel-side extending portion 28 is formed. The portion 28s reaches the upper edge 18u of the body-side extending portion 18. Then, of the lower edge 28d of the instrument panel-side extending portion 28, a portion on the vehicle rear side with respect to the step portion 28s comes into contact with the upper edge 18u of the body-side extending portion 18. At this time, in the instrument panel-side extending portion 28, the step portion 28s is shaped to be hooked on the body-side extending portion 18, and the movement of the instrument panel-side extending portion 28 to the rear of the vehicle is restricted. Thereby, the instrument panel-side bracket 20 can be attached to the body-side bracket 10 with the body-side bracket 10 and the instrument panel-side bracket 20 in contact with each other. In FIGS. 3 and 4, a step portion 28 s of the lower edge 28 d of the instrument panel-side extension portion 28 is virtually illustrated by a broken line.

  In a state where the body-side bracket 10 and the instrument panel-side bracket 20 are in contact with each other, the distal end portion 33t of the protruding portion 33 of the silencer 30 is positioned between the concave portion 16 of the body-side opposed wall portion 13 and the instrument panel-side opposed wall portion 23. are doing. Then, the instrument side bracket 20 is attached to the body side bracket 10 by fastening and fixing the body side fastening hole 15 and the instrument panel side fastening hole 25 with bolts.

Next, the effect of the vehicle front structure will be described.
In the vehicle front structure as in the above embodiment, the mounting position of the instrument panel reinforcement 19 in the vehicle width direction, the thickness of the silencer 30, and the disposition position of the silencer 30 on the body-side bracket body 11 in the vehicle width direction include: Variations may occur. Such variations affect the positional relationship between the instrument panel-side extending portion 28 of the instrument panel-side bracket 20 and the silencer 30 in the vehicle width direction. If the instrument panel-side extending portion 28 and the silencer 30 have a positional relationship of being close to each other in the vehicle width direction, when the instrument panel-side bracket 20 is moved forward of the vehicle so as to be fastened and fixed to the body-side bracket 10, The rear end may interfere with the front end 28f of the instrument panel-side extension 28. Then, the silencer 30 may be turned up from the body-side bracket 10 due to such interference.

  In the above-described embodiment, when the instrument panel-side bracket 20 is moved forward of the vehicle so as to be fastened and fixed to the body-side bracket 10, the projection 33 of the silencer 30 and the instrument panel-side extension 28 of the silencer 30 in the vehicle width direction are formed. Adjacent. The protruding portion 33 of the silencer 30 is curved outward from the rear end 31r of the silencer main body 31 in the vehicle width direction. In addition, the distal end portion 28f of the instrument panel side extension portion 28 is curved inward in the vehicle width direction. That is, the bending direction of the projecting portion 33 of the silencer 30 and the bending direction of the distal end portion 28f of the instrument panel-side extending portion 28 are opposite to each other in the vehicle width direction. Therefore, when the instrument panel-side bracket 20 is moved forward of the vehicle so as to be fastened to the body-side bracket 10, the distal end portion 28 f of the instrument panel-side extending portion 28 does not easily interfere with the distal end portion 33 t of the protrusion 33 of the silencer 30. Even if the distal end portion 28f of the instrument panel-side extending portion 28 interferes with the protrusion 33 of the silencer 30, the instrument panel-side extending portion 28 is guided inward in the vehicle width direction because it interferes outside of both curved portions. It is possible to prevent the silencer 30 from being turned up from the body-side bracket main body 11.

  In the above-described embodiment, the distal end 33t of the protrusion 33 of the silencer 30 is located between the recess 16 of the body-side bracket body 11 of the body-side bracket 10 and the instrument panel-side facing wall 23. For this reason, it is possible to suppress the silencer 30 from being sandwiched between the body-side bracket 10 and the instrument panel-side bracket 20. Then, since the body-side bracket 10 and the instrument panel-side bracket 20 are separated from each other by the thickness of the silencer 30 sandwiched therebetween, the fastening and fixing between the body-side bracket 10 and the instrument panel-side bracket 20 cannot be properly performed. Can be suppressed.

The above embodiment may be changed to another embodiment as described below.
The formation of the step portion 28s at the lower edge 28d of the instrument panel-side extension portion 28 may be omitted. In such a mode, the instrument panel-side bracket 20 is moved to the front of the vehicle with the instrument panel-side extending portion 28 placed on the body-side extending portion 18, thereby fastening the instrument panel-side bracket 20 to the body-side bracket 10. You can be guided to the position.

  The number and formation positions of the body-side fastening holes 15 in the body-side facing wall portion 13 can be freely changed within a range where the fastening between the body-side bracket 10 and the instrument panel-side bracket 20 can be appropriately performed. In this embodiment, the number and the position of the instrument panel side fastening holes 25 facing the body side fastening holes 15 are changed in accordance with the change of the body side fastening holes 15.

  The protrusion 16 of the silencer 30 is located between the recess 16 and the instrument panel-facing wall 23 in the recess 16 of the body-facing wall 13, and is located above the vehicle than the position where the body-side extension 18 is formed. If the concave portion 16 is located and the concave portion 16 and the protruding portion 33 and the instrument panel-side extending portion 28 are located adjacent to each other in the vehicle width direction, the formation position can be changed. For example, the concave portion 16 may be located on the vehicle lower side than all the body side fastening holes 15 formed in the body side facing wall portion 13, or all the body portions formed in the body side facing wall portion 13 may be provided. It may be located on the vehicle upper side than the side fastening hole 15.

  The overall shape of the body-side bracket body 11 may be changed. For example, the body-side bracket body 11 further extends from the lower edge of the body-side opposing wall portion 13 toward the vehicle front side, or from the side edge of the body-side opposing wall portion 13 outside the vehicle width direction toward the vehicle front side. And a side wall that extends.

  A flange may be formed on the body-side bracket body 11, and the body-side bracket body 11 may be fixed to the front pillar FP by welding the flange to the front pillar FP.

The body-side bracket 10 may be fixed to a portion other than the front pillar FP on the left and right inner surfaces of the vehicle.
The shape of the instrument panel reinforcement 19 can be changed within a range extending in the vehicle width direction.

  -The shape of the instrument panel side bracket main body 21 is not limited to a substantially U-shaped cross section. For example, a wall that connects the rear ends of the side portions 22 of the instrument panel-side bracket body 21 may be further provided, and the shape of the instrument panel-side bracket body 21 may be changed to a rectangular cross section.

  In the above-described embodiment, the mounting mode of the body-side bracket 10 and the instrument panel-side bracket 20 has been described in the right side structure of the left and right structures of the vehicle. The same manner of attaching the body-side bracket 10 and the instrument panel-side bracket 20 as in the above embodiment may be adopted for the left-side structure of the left and right structures of the vehicle. Further, the same mounting mode of the body-side bracket 10 and the instrument panel-side bracket 20 as in the above embodiment may be adopted for both the left and right structures of the vehicle.

  DESCRIPTION OF SYMBOLS 10 ... Bracket on body side, 11 ... Bracket body on body side, 13 ... Opposite wall part on body side, 15 ... Fastening hole on body side, 16 ... Concave part, 18 ... Extension part on body side, 18u ... Upper edge, 19 ... Instrument panel Reinforcement, 20 ... Instrument panel side bracket, 21 ... Instrument panel side bracket body, 23 ... Instrument panel side opposing wall part, 25 ... Instrument panel side fastening hole, 28 ... Instrument panel side extension part, 28f ... Tip part, 30 ... Silencer, 31 ... Silencer body, 31r ... end, 33 ... projection, 33t ... tip.

Claims (1)

Instrument panel-side brackets provided at both ends of an instrument panel reinforcement extending in the vehicle width direction are attached to a pair of body-side brackets fixed to left and right inner surfaces of the vehicle. A vehicle front structure in which the inside in the width direction is covered with a silencer,
The body-side bracket has a body-side bracket body having a body-side facing portion facing the instrument panel-side bracket in the vehicle front-rear direction, a body-side fastening hole provided in the body-side facing portion, A body-side extending portion extending from the bracket body toward the inside in the vehicle width direction,
The instrument panel-side bracket is provided at an instrument panel-side bracket body having an instrument panel-side opposing portion opposing the body-side opposing portion in a vehicle front-rear direction, and at a position opposing the body-side fastening hole at the instrument panel-side opposing portion. An instrument panel-side fastening hole and an instrument panel-side extending portion extending from the instrument panel-side bracket body toward the vehicle front side and in contact with an upper edge of the body-side extending portion,
The silencer is located between the body-side bracket main body and the instrument panel-side extension in the vehicle width direction, and the body-side extension of the body width-direction inner part of the body-side bracket main body. A silencer body that covers a portion excluding a formation position, and a protrusion that is provided at the same height position as the instrument panel-side extending portion in the vehicle vertical direction and that protrudes rearward from the vehicle rear end of the silencer body. Department and
The body-side facing portion of the body-side bracket body is provided with a concave portion that is provided at the same height position as the instrument panel-side extending portion in the vehicle vertical direction and that is depressed toward the vehicle front side,
The distal end of the instrument panel-side extending portion is curved inward in the vehicle width direction,
The vehicle front structure, wherein the projecting portion is curved outward in the vehicle width direction, and a tip portion is located between the concave portion and the instrument panel-side facing portion.

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