JP6593679B2 - Vehicle strut support structure - Google Patents

Description

  The present invention relates to a strut support structure for a vehicle.

  Patent Document 1 describes a structure in which an end of a cross member is coupled to a side member, and a bracket on which a strut is mounted is supported on both the side member and the cross member via gussets. One of the gussets is integrally welded to the bracket and the side member, and the other of the gussets is fixed to the cross member with bolts.

Japanese Utility Model Publication No. 60-54607

  In the structure of Patent Document 1, the gusset is integrally welded to the bracket and the side member, and the gusset is fastened and fixed to the cross member. That is, brackets and cross members must be sequentially assembled to the side members, which are body frames, and it is difficult to improve work efficiency. Further, since the bracket on which the strut is mounted is welded to the side member, there is a possibility that the region of the side member where the bracket is welded must be reinforced to increase the rigidity.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a strut support structure for a vehicle that can improve the efficiency of assembly work and can suppress the demand for the rigidity of a side member.

To achieve the above object, the strut support structure of the present onset Ming vehicle includes left and right pair side members and a suspension cross member between the pair of left and right strut bracket left and right pair of side rails and a pair of left and right gusset Prepare. The left and right side members extend in the front-rear direction on both sides in the vehicle width direction . The suspension cross member extends in the vehicle width direction below the left and right side members . Left Right strut bracket supports a strut extending to bending from both ends in the vehicle width direction of the suspension cross member upwards. The left and right side rails are fixed to the lower ends of the left and right strut brackets and extend in the front-rear direction above the suspension cross member. The left and right gussets are provided at locations where each of the left and right side rails intersects with the suspension cross member, and are fixed to the side rail and the suspension cross member to form a closed cross section.

The suspension cross member, left and right strut brackets, left and right side rails, and left and right gussets are integrated into one module. The left and right strut brackets are fastened and fixed to the outer surfaces of the left and right side members, respectively. The integrated modules are fixed to the side members by fastening the left and right side rails to the lower surfaces of the left and right side members respectively at the front and rear of the strut bracket .

  In the above configuration, the suspension cross member and the left and right strut brackets are integrated as one module, and the integrated module is fixed to the side member that is the vehicle body frame. Assembling becomes possible, and the efficiency of the assembling work can be improved.

  Moreover, a common module can be used for vehicle types having different body frames, and productivity can be improved.

  Furthermore, since the strut bracket that supports the strut is integrated with the suspension cross member to form a single module having high rigidity, the demand for the rigidity of the side member can be suppressed.

Further, the gusset can further increase the rigidity of the module.

  The strut support structure for a vehicle according to the present invention can improve the efficiency of the assembling work and can suppress the demand for the rigidity of the side member.

1 is a perspective view of a strut support structure for a vehicle according to an embodiment of the present invention. It is a top view of the strut support structure of the vehicle of FIG. It is a rear view of the strut support structure of the vehicle of FIG. It is a side view of the strut support structure of the vehicle of FIG. It is a perspective view of a suspension assembly. It is a perspective view of a cross member assembly. It is a top view of a cross member assembly. It is a front view of a cross member assembly. It is a side view of a cross member assembly.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. An arrow FR in the figure indicates the front of the vehicle. In the following description, the front-rear direction means the front-rear direction of the vehicle, and the left-right direction means the left-right direction in a state where it faces the front of the vehicle.

  As shown in FIGS. 1 to 4, the vehicle 1 of the present embodiment includes a strut support structure 2. The strut support structure 2 supports a pair of struts provided symmetrically on the left and right of the vehicle 1. The strut support structure 2 includes a pair of left and right side members 3, a cross member assembly 4, a suspension assembly 5, and the like.

  The left and right side members 3 extend in the front-rear direction on both sides in the vehicle width direction. Each side member 3 has a U-shaped cross section that opens to the inner side in the vehicle width direction. Each side member 3 stands from a side member side plate 6 that extends substantially vertically and extends in the front-rear direction, and an upper edge and a lower edge of the side member side plate 6. The side member upper plate portion 7 and the side member lower plate portion 8 that are bent inward in the width direction and face each other are integrally provided.

  The cross member assembly 4 is an integrated module, and the integrated module is fixed to the left and right side members 3.

  6 to 9, the cross member assembly 4 includes a suspension cross member 9, a pair of left and right strut brackets 10, a pair of left and right side rails 11, a pair of left and right gussets 12, and a left and right 1 A pair of engine mount brackets 13, a pair of left and right leaf brackets 14, a pair of left and right front link brackets 15, a pair of left and right rear link brackets 16, a steering bracket 17, and a pair of left and right rod mount brackets 18. Etc.

  The suspension cross member 9 extends in the vehicle width direction below the left and right side members 3. The suspension cross member 9 has a U-shaped cross section that opens downward, and extends horizontally from a cross member horizontal plate portion 19 that extends substantially horizontally in the vehicle width direction, and a front end edge and a rear end edge of the cross member horizontal plate portion 19. Cross member front plate part 20 and cross member rear plate part 21 which are bent and face each other, and front and rear from the respective lower end edges of the cross member front plate part 20 and cross member rear plate part 21 in the vehicle width direction. A pair of left and right cross member front flange portions 22 and a pair of left and right cross member rear flange portions 23 are integrally formed.

  The left and right strut brackets 10 extend so as to bend upward from both ends of the suspension cross member 9 in the vehicle width direction. Each strut bracket 10 has a U-shaped cross section that opens outward in the vehicle width direction. The strut bracket side plate portion 24 stands substantially vertically, and the upper end edge of the strut bracket side plate portion 24 bends outward in the vehicle width direction and obliquely upwards. A strut bracket inclined plate portion 25 extending inward, a strut mounting plate portion 26 further bent outward from the upper end edge of the strut bracket inclined plate portion 25 in the vehicle width direction, and extended outward in the vehicle width direction, the strut bracket side plate portion 24 and the strut bracket A strut bracket front plate portion 27 and a strut bracket rear plate portion 28 which are bent from the front end edge and the rear end edge of the inclined plate portion 25 outward in the vehicle width direction and face each other are integrally provided. Each strut bracket 10 is fastened and fixed to the outer side in the vehicle width direction of the side member side plate 6 by a plurality of bolts 29 and nuts (not shown) that are screwed to the bolts 29 from the outer side in the vehicle width direction. Is done. The plurality of bolts 29 are arranged at the four corners of the strut bracket side plate portion 24.

  The left and right side rails 11 extend in the front-rear direction at the inner sides in the vehicle width direction at the lower end edges of the left and right strut brackets 10. Each of the side rails 11 has a U-shaped cross section that opens downward, and extends from the side rail horizontal plate portion 30 that extends substantially horizontally in the front-rear direction, from the vehicle width direction inner edge and the vehicle width direction outer edge of the side rail horizontal plate portion 30. A side rail inner plate portion 31 and a side rail outer plate portion 32 which are bent downward and face each other are integrally provided. Each side rail 11 is welded and fixed to the lower edge of the strut bracket 10 in the vicinity of the center in the front-rear direction of the side rail horizontal plate portion 30 and the side rail outer plate portion 32, and a plurality of bolts 33 and these bolts 33 from below. The side rail horizontal plate portion 30 is fastened and fixed to the lower surface of the side member lower plate portion 8 by a nut (not shown) to be screwed. The plurality of bolts 33 are linearly arranged at four locations in the front-rear direction.

  The left and right gussets 12 are provided at locations where each of the left and right side rails 11 and the suspension cross member 9 intersect. Each gusset 12 has a U-shaped cross section that opens obliquely downward. A gusset inclined plate portion 34 that extends obliquely downward from above the side rail inner plate portion 31 toward the cross member horizontal plate portion 19, and a gusset inclined plate portion 34. A triangular gusset front plate portion 35 and a gusset rear plate portion (not shown) which are bent obliquely downward from the front end edge and the rear end edge of the front end edge and the rear end portion (not shown) are integrally provided. Each gusset 12 is welded and fixed to the side rail inner plate portion 31 and the cross member horizontal plate portion 19 at the end edges of the gusset front plate portion 35 and the gusset rear plate portion (not shown). Since the side rail 11 is coupled to the strut bracket 10, the gusset is coupled to the strut bracket 10 via the side rail 11. That is, each gusset 12 is coupled to the suspension cross member 9 and the strut bracket 10 (side rail 11) to form a closed cross section between the suspension cross member 9 and the side rail 11.

  The left and right engine mount brackets 13 are provided behind the left and right gussets 12. Each engine mount bracket 13 integrally includes an engine mount inclined plate portion 36 arranged in parallel with the gusset inclined plate portion 34 and an engine mount side plate portion 37 bent downward from the lower end edge of the engine mount inclined plate portion 36. Have. Each engine mount bracket 13 has a front end edge and an upper end edge of the engine mount inclined plate portion 36 welded and fixed to a rear end edge of the gusset inclined plate portion 34 and an upper end edge of the side rail inner plate portion 31, and an engine mount side plate portion. A part of the lower edge of 37 is fixed to the rear link bracket 17 by welding.

  The left and right leaf brackets 14 extend in the front-rear direction on both sides in the vehicle width direction below the suspension cross member 9. Each leaf bracket 14 is fastened and fixed to the lower surfaces of the cross member front flange portion 22 and the cross member rear flange portion 23 by a plurality of bolts 38 and nuts 39 screwed into the bolts 38 from above. The plurality of bolts 38 are arranged at six locations, two at each of the left and right cross member front flange portions 22 and one at each of the left and right cross member rear flange portions 23.

  The left and right front link brackets 15 are provided at the front upper ends of the left and right leaf brackets 14 via fixing pieces 40, respectively. Each of the front link brackets 15 is fastened and fixed to the upper surface of the leaf bracket 14 by a bolt 41 and a nut 42 that is screwed onto the bolt 41 from above.

  The left and right rear link brackets 16 are respectively provided at the rear upper ends of the left and right leaf brackets 14.

  The steering bracket 17 extends in the vehicle width direction in front of the suspension cross member 9. The steering bracket 17 is fastened and fixed to the upper surfaces of the left and right leaf brackets 14 by a plurality of bolts 43 and nuts 44 screwed into the bolts 43 from above. The plurality of bolts 43 are arranged at four locations, two at the front and rear at both ends of the steering bracket 17.

  The left and right rod mount brackets 18 extend inward in the vehicle width direction from the front ends of the left and right side rails 11. Each rod mount bracket 18 has a U-shaped cross section that opens downward, and is bent downward from the rod mount horizontal plate portion 45 provided substantially horizontally and the front and rear edges of the rod mount horizontal plate portion 45. The rod mount front plate portion 46 and the rod mount rear plate portion 47 that are opposed to each other are integrally provided. Each rod mount bracket 18 is fixed by welding to the side rail inner plate portion 31 at the outer edge in the vehicle width direction.

  As shown in FIGS. 1 to 5, the suspension assembly 5 is an integrated module, and the integrated module is fixed to the cross member assembly 4.

  The suspension assembly 5 includes a pair of left and right links 48, a horizontally placed leaf 49, a pair of left and right leaf mounts 50, a pair of left and right knuckles 51, a pair of left and right rotors 52, and a pair of left and right calipers 53. A pair of left and right hinges 54, a pair of left and right struts 55, a steering unit 56, a steering reversing gear 57, and the like.

  The left and right links 48 are provided below the left and right strut brackets 10 so as to be swingable around a front-rear direction axis. Each link 48 has a V-shape opening inward in the vehicle width direction, the branch front end portion 58 is in front of the vehicle width direction inner side, the branch rear end portion 59 is in the rear of the vehicle width direction inner side, and the meeting end portion. 60 are respectively arranged outside in the vehicle width direction. Each link 48 is attached by a plurality of adjustment cams 61 so that the branch front end 58 is swingably attached to the front link bracket 15 and the branch rear end 59 is swingably attached to the rear link bracket 16. The plurality of adjustment cams 61 are arranged at two locations, one location of the front link bracket 15 and one location of the rear link bracket 16.

  The horizontally placed leaf 49 extends in the vehicle width direction so as to be covered by the suspension cross member 9 below the suspension cross member 9 having a U-shaped cross section. Both ends of the transverse leaf 49 in the vehicle width direction are fixed to the meeting end portions 60 of the left and right links 48.

  The left and right leaf mounts 50 are spaced from each other in the vehicle width direction and fixed to the upper surface of the horizontally placed leaf 49, and are interposed between the lower surface of the cross member horizontal plate portion 19.

  The left and right knuckles 51 are respectively provided integrally with the left and right links 48 so as to stand up from the outer edge in the vehicle width direction of the meeting end 60 of the left and right links 48.

  The left and right rotors 52 are rotatably attached to the outer sides in the vehicle width direction of the left and right knuckles 51 by hubs (not shown).

  The left and right calipers 53 are fixed to the outer sides in the vehicle width direction of the left and right knuckles 51, respectively, and sandwich the rear of the left and right rotors 52, respectively. Each caliper 53 has a J-shaped cross section that opens to the front, a disk-shaped caliper fixing plate portion 62 that stands substantially vertically, and a caliper rear end that is bent outward from the rear end edge of the caliper fixing plate portion 62 in the vehicle width direction. The plate portion 63 and a caliper side plate portion 64 that bend forward from the outer edge in the vehicle width direction of the caliper rear end plate portion 63 and face the caliper fixing plate portion 62 are integrally provided.

  The left and right hinges 54 are respectively provided so as to be swingable around the vertical axis on the inner side in the vehicle width direction of the left and right knuckles 51. Each hinge 54 is pivotally attached to the inner surface in the vehicle width direction of the left and right knuckles 51 by pins 65.

  The left and right struts 55 are respectively provided so as to extend in the vertical direction inside the left and right hinges 54 in the vehicle width direction. Each strut 55 is fixed to the inside of the knuckle 51 in the vehicle width direction by left and right strut fixing members 66. The upper end of each strut 55 is fitted from below into an attachment hole 73 formed in the strut bracket attachment plate portion 26 of the left and right strut brackets 10.

  The left and right strut fixing members 66 have a cylindrical shape having a C-shaped cross section that opens to the outer side in the vehicle width direction, from a cylindrical portion 67 into which the left and right struts 55 are inserted, and from both ends of the cylindrical portion 67 on the outer side in the vehicle width direction. A pair of fixed pieces 68 that are bent outward in the vehicle width direction are integrally provided. Each strut fixing member 66 includes a plurality of bolts 69 and nuts (not shown) that are screwed into the bolts 69 from the rear after the struts 55 are inserted into the cylindrical portion 67. Fastened and fixed inside in the width direction. The plurality of bolts 69 are arranged at two locations on the upper and lower sides of the fixed piece 68.

  The steering unit 56 extends in the vehicle width direction above the steering bracket 17. The steering unit 56 includes a steering tube 70 and a pair of left and right tie rods 71. The steering tube 70 is fixed to the steering bracket 17 by being inserted into a fixing ring 72 provided on the upper surface of the steering bracket 17. The left and right tie rods 71 extend from both ends of the steering tube 70.

  The steering reversing gear 57 is provided from the front of the strut bracket 10 on the right side in the vehicle width direction to the right side in the vehicle width direction of the steering tube 70. The steering reversing gear 57 is fixed to the side member 3 on the right side in the vehicle width direction by a fixing plate 74 and is connected to the steering tube 70. The fixing plate 74 is fastened and fixed to the side member side plate portion 6 in the side member 3 on the right side in the vehicle width direction by a plurality of bolts 75 and nuts (not shown) screwed to the bolts 75 from the inside in the vehicle width direction.

  As described above, in this embodiment, the suspension cross member 9 and the left and right strut brackets 10 are integrated as one module, and the integrated module is fixed to the side member 3 that is the vehicle body frame. After being manufactured in a separate process, it can be assembled to the body frame, and the efficiency of the assembling work can be improved. Moreover, a common module can be used for vehicle types having different body frames, and productivity can be improved. In addition, since the strut bracket 10 that supports the strut 55 is integrated with the suspension cross member 9 to form a single module having high rigidity, the demand for the rigidity of the side member 3 can be suppressed.

  Further, since the module includes the gusset 12 which is coupled to the suspension cross member 9 and the strut bracket 10 to form a closed cross section, the rigidity of the module can be further increased.

  In the above embodiment, the left and right links 48 do not need to form the suspension assembly 5, and may form the cross member assembly 4.

  As mentioned above, although the embodiment to which the invention made by the present inventor is applied has been described, the present invention is not limited by the discussion and the drawings that form part of the disclosure of the present invention according to this embodiment. That is, it should be added that other embodiments, examples, operation techniques, and the like made by those skilled in the art based on this embodiment are all included in the scope of the present invention.

  The strut support structure for a vehicle according to the present invention can be used for trucks and other vehicles.

1 Vehicle 2 Strut Support Structure 3 Side Member 4 Cross Member Assembly (Module)
9 Suspension cross member 10 Strut bracket 12 Gusset 55 Strut

Claims (1)

A pair of left and right side members extending in the front-rear direction on both sides in the vehicle width direction ;
A suspension cross member extending in the vehicle width direction below the left and right side members ;
A pair of left and right strut brackets extending so as to bend upward from both ends in the vehicle width direction of the suspension cross member and supporting struts;
A pair of left and right side rails fixed to the lower ends of the left and right strut brackets and extending in the front-rear direction above the suspension cross member;
A pair of left and right gussets provided at locations where each of the left and right side rails and the suspension cross member intersect, and fixed to the side rail and the suspension cross member to form a closed cross section ;
The suspension cross member, the left and right strut brackets, the left and right side rails, and the left and right gussets are integrated modules,
The left and right strut brackets are fastened and fixed to the outer surfaces of the left and right side members, respectively, and the left and right side rails are fastened and fixed to the lower surfaces of the left and right side members, respectively, at the front and rear of the left and right strut brackets. The integrated module is fixed to the left and right side members. A strut support structure for a vehicle.

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