Suspension support structure

Abstract

To smoothly move a suspension with an inexpensive configuration.SOLUTION: Support structure of a suspension (41) absorbs an impact on rear wheels from a road surface. The support structure of the suspension is provided with a pair of side frames (11) extending upward from the front side of the rear wheels to the rear side and a suspension bracket (61) disposed below one of the side frames. In a lower side view, an upper end portion (42) of the suspension is supported by the suspension bracket at a location in which the suspension bracket overlaps with one of the side frames.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a support structure for a suspension. [Background technology]

[0002] In a scooter-type saddle-ride vehicle, a seat frame rises from the rear side of a low floorboard, and a swing arm is swingably connected to the rising part of the seat frame. The upper part of the seat frame and the swing arm are connected via a rear suspension, and the rear suspension expands and contracts as the swing arm swings, thereby suppressing vibrations transmitted to the vehicle body and improving the contact between the rear wheel and the road surface. Conventionally, as a saddle-ride vehicle of this type, one in which the upper end of the rear suspension is supported by a boss bracket is known (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 63-192680 Summary of the Invention [Problem to be solved by the invention]

[0004] In the saddle-type vehicle described in Patent Document 1, the boss bracket is supported by a cantilever on the seat frame. This causes a strong bending moment to act on the base end of the boss bracket, which may cause deformation of the boss bracket and interfere with suspension operation. In addition, because the boss bracket is formed by cutting, there is a problem in that the processing costs for the boss bracket are high.

[0005] The present invention has been made in view of the above points, and an object of the present invention is to provide a suspension support structure that is inexpensive and allows the suspension to operate smoothly. [Means for solving the problem]

[0006] One aspect of the suspension support structure of the present invention is a suspension support structure that absorbs the impact that the rear wheel receives from the road surface, and comprises a pair of side frames extending upward and rearward from in front of the rear wheel, and a suspension bracket installed on the underside of one of the side frames, and solves the above-mentioned problem by supporting the upper end of the suspension on the suspension bracket at the point where the suspension bracket overlaps with the one of the side frames when viewed from below. [Effects of the Invention]

[0007] According to one aspect of the suspension support structure of the present invention, the suspension is supported by the suspension bracket directly below one of the side frames. Therefore, the upward thrust load from the suspension is absorbed by the highly rigid side frame, and the suspension is stably supported by the suspension bracket, allowing the suspension to operate smoothly. Furthermore, cutting of the suspension bracket is no longer necessary, reducing the processing costs for the suspension bracket. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a left side view of a saddle-ride type vehicle according to an embodiment of the present invention; [Figure 2] FIG. 2 is a left side view of the rear part of the vehicle body of the present embodiment. [Figure 3] 3 is a cross-sectional view of the rear part of the vehicle body in FIG. 2 taken along line AA. [Figure 4] 3 is a cross-sectional view of the rear part of the vehicle body of FIG. 2 taken along line BB. [Figure 5] 3 is a cross-sectional view of the rear part of the vehicle body of FIG. 2 taken along line CC. [Figure 6] FIG. 6 is a cross-sectional view of the rear part of the vehicle body in FIG. 5 taken along the center line of the rear suspension. [Figure 7] FIG. 10 is a schematic diagram showing a support structure of a suspension according to a first modified example. [Figure 8]FIG. 10 is a bottom view showing the support structure of the suspension of the second modified example. DETAILED DESCRIPTION OF THE INVENTION

[0009] A suspension support structure according to one aspect of the present invention reduces the impact that the rear wheels receive from the road surface. A pair of side frames extend rearward from in front of the rear wheels, upward, with a suspension bracket installed on the underside of one of the side frames. When viewed from below, the upper end of the suspension is supported by the suspension bracket where the suspension bracket overlaps with the one side frame. In other words, the suspension is supported by the suspension bracket directly below the one side frame. Therefore, the upward thrust load from the suspension is absorbed by the one side frame, which has high rigidity, and the suspension is stably supported by the suspension bracket, allowing the suspension to operate smoothly. Furthermore, machining of the suspension bracket is no longer necessary, reducing the cost of manufacturing the suspension bracket. [Example]

[0010] The saddle-riding type vehicle of this embodiment will be described below with reference to the accompanying drawings. Fig. 1 is a left side view of the saddle-riding type vehicle of this embodiment. In the following drawings, arrow Fr indicates the front of the vehicle, arrow Re indicates the rear of the vehicle, arrow L indicates the left side of the vehicle, and arrow R indicates the right side of the vehicle.

[0011] As shown in Fig. 1, a saddle-type vehicle 1 is configured by attaching various covers to an underbone-type body frame 10 (see Fig. 2) as the exterior body of the vehicle. A front cover 21 is provided at the front of the vehicle, and a front leg shield 22 that protects the rider's legs is provided behind the front cover 21. A floor board 23 extends rearward from the lower end of the front leg shield 22, and a body cover 24 and a pair of side covers 25 are provided behind the floor board 23. A seat 31 with a series of seating surfaces for the driver and passenger is installed above the side cover 25.

[0012] Handlebars 32 are provided above front cover 21, and a front wheel 34 is rotatably supported below front cover 21 via front forks 33. A motorized swing arm 35 is provided below side cover 25. Swing arm 35 is swingably connected to body frame 10, and a rear wheel 37 is rotatably supported at the rear of swing arm 35. A rear suspension (suspension) 41 is connected to swing arm 35, and the extension and contraction of rear suspension 41 suppresses vibrations and improves contact between the road surface and rear wheel 37.

[0013] In typical scooter-type saddle-ride vehicles, the rear suspension is supported on the side frame by a cylindrical boss bracket or a square U-shaped sheet metal bracket. The boss bracket is inserted into the side frame or the like and welded, and the upper end of the rear suspension is supported by this boss bracket. Because the side frame and the upper end of the rear suspension are aligned side by side, a strong bending moment acts on the base end of the boss bracket due to the upward thrust from the rear suspension, which can destabilize the support provided by the boss bracket and cause the rear suspension to function poorly.

[0014] One edge of the U-shaped metal sheet bracket is welded to the side frame or the like, and the upper end of the rear suspension is clamped between the opposing plate of the metal sheet bracket. In order to tighten the opposing plate of the metal sheet bracket, the length of the metal sheet bracket from the weld point must be increased to reduce its rigidity. This makes it difficult to secure sufficient storage space for the rear suspension below the side frame or the like. Therefore, in this embodiment, the rear suspension 41 is supported by the suspension bracket 61 directly below the side frame 11, and a suspension bracket 61 shaped to reduce bending rigidity is used (see Figure 4).

[0015] The rear structure of a saddle-ride type vehicle and the support structure of the rear suspension will be described with reference to Figures 2 to 4. Figure 2 is a left side view of the rear body of the vehicle of this embodiment. Figure 3 is a cross-sectional view of the rear body of Figure 2 taken along line AA. Figure 4 is a cross-sectional view of the rear body of Figure 2 taken along line BB. For ease of explanation, Figure 3 shows a state in which the rear suspension is omitted.

[0016] As shown in Fig. 2, at the rear of the body of the saddle-ride type vehicle 1, a pair of side frames 11 with a circular cross section extend obliquely rearward and upward from in front of a rear wheel 37. A pivot bracket 12 projects downward from near the rising edge of the pair of side frames 11, and a swing arm 35 is swingably supported by the pivot bracket 12 via a pivot shaft 13. A base end of the swing arm 35 forms a motor case 36, and a motor (not shown) is installed inside the motor case 36. The rear wheel 37 is rotatably supported at the rear end of the swing arm 35, and a lower end 43 of a rear suspension 41 is also supported thereon.

[0017] 2 and 3, the rear ends of the pair of side frames 11 are located above the rear wheels 37 and are connected by a plate-shaped bridge bracket 14 and a bridge frame 15 having a circular cross section. Both ends of the bridge bracket 14 are joined to the upper surfaces of the pair of side frames 11, and both ends of the bridge frame 15 are joined to the opposing surfaces (inner surfaces) of the pair of side frames 11. A reinforcing member 51 is installed so as to cover the joint 16 between one (left) side frame 11 and the bridge frame 15 from below, and the joint 16 between one side frame 11 and the bridge frame 15 is reinforced by the reinforcing member 51.

[0018] The reinforcing member 51 is formed in a T-shape by a vertical plate 52 that extends along one of the side frames 11 and a horizontal plate 53 that extends along the bridge frame 15. The vertical plate 52 is joined to the underside of one of the side frames 11, and the horizontal plate 53 is joined to the underside of the bridge frame 15. A straight side wall 54a is formed along one edge (left edge) of the vertical plate 52, a curved side wall 54b is formed that connects the front side of the other edge (right edge) of the vertical plate 52 with the front edge of the horizontal plate 53, and a curved side wall 54c is formed that connects the rear side of the other edge of the vertical plate 52 with the rear edge of the horizontal plate 53. The side walls 54a-54c rising from the vertical plate 52 and the horizontal plate 53 increase the rigidity of the reinforcing member 51.

[0019] As shown in Figure 4, a suspension bracket 61 is installed on the underside of the reinforcing member 51. The suspension bracket 61 is formed in an inverted U shape by an upper plate 62 joined to the reinforcing member 51 and a pair of side plates 63 facing each other in the vehicle width direction. The upper end portion 42 of the rear suspension 41 is sandwiched between the pair of side plates 63. Bolts (fastening members) 64 are inserted into mounting holes (not shown) in the pair of side plates 63 and the rear suspension 41, and nuts (fastening members) 65 are attached to the tips of the bolts 64. The pair of side plates 63 are tightened by the bolts 64 and nuts 65, and the upper end portion 42 of the rear suspension 41 is supported by the suspension bracket 61.

[0020] The pair of side plates 63 rise down from both side edges of the upper plate 62 in the vehicle width direction, and each side plate 63 is connected only to the upper plate 62, so the rigidity of the pair of side plates 63 against bending deformation in the vehicle width direction is low. By fastening the pair of side plates 63 with bolts 64 and nuts 65, the pair of side plates 63 can be easily bent starting from the upper plate 62. Therefore, even if the pair of side plates 63 are formed with a short height, they can be fastened with the bolts 64 and nuts 65, and the upper end 42 of the rear suspension 41 can be brought closer to one of the side frames 11. It is possible to ensure sufficient storage space for the rear suspension 41 below one of the side frames 11, which is an issue with scooter-type saddle-riding vehicles 1.

[0021] 3 and 4, in bottom view, the upper end 42 of the rear suspension 41 is supported by the suspension bracket 61 at a location where the suspension bracket 61 overlaps with the joint 16 between one side frame 11 and the bridge frame 15. In other words, the upper end 42 of the rear suspension 41 is supported by the suspension bracket 61 directly below the joint 16 between one side frame 11 and the bridge frame 15. The joint 16 between one side frame 11 and the bridge frame 15 is reinforced with a reinforcing member 51, and the one side frame 11 and the bridge frame 15, which have high rigidity, receive the upward thrust load from the rear suspension 41.

[0022] At this time, a slight torsional load acts on one side frame 11 in the rolling direction due to the upward thrust load from the rear suspension 41. As described above, the reinforcing member 51 is formed in a T-shape when viewed from below, and is joined not only to one side frame 11 but also to the bridge frame 15, so that the torsional load acting on the one side frame 11 is received by the reinforcing member 51 and the bridge frame 15. In this way, the load from the rear suspension 41 is received, and the rear suspension 41 is stably supported by the suspension bracket 61, allowing the rear suspension 41 to operate smoothly.

[0023] Furthermore, the lower surfaces of the vertical plates 52 and horizontal plates 53 of the reinforcing member 51 are formed flat, and the upper surface of the upper plate 62 of the suspension bracket 61 is formed flat, and the upper surface of the upper plate 62 is joined by welding to the lower surfaces of the vertical plates 52 and horizontal plates 53. Because the joint surfaces between the reinforcing member 51 and the suspension bracket 61 are formed flat, even if the position of the suspension bracket 61 is moved back and forth or left and right relative to the reinforcing member 51, the positional relationship between the parts is not restricted by the joint surfaces. The position of the suspension bracket 61 can be adjusted back and forth or left and right relative to the reinforcing member 51, and the suspension bracket 61 can be installed in an appropriate position relative to one of the side frames 11.

[0024] The support state of the rear suspension will be described with reference to Figures 5 and 6. Figure 5 is a cross-sectional view of the rear body of Figure 2 taken along line CC. Figure 6 is a cross-sectional view of the rear body of Figure 5 taken along the center line of the rear suspension.

[0025] 5 and 6, a reinforcing member 51 is joined to the lower surfaces of one side frame 11 and the bridge frame 15, and the upper surface of a suspension bracket 61 is joined to the lower surface of the reinforcing member 51. As described above, the suspension bracket 61 is located directly below the joint 16 between the one side frame 11 and the bridge frame 15. The upper end portion 42 of the rear suspension 41 fits between a pair of side plates 63 of the suspension bracket 61. By tightening bolts 64 and nuts 65, the pair of side plates 63 of the suspension bracket 61 are bent inward to sandwich the upper end portion 42 of the rear suspension 41.

[0026] In this case, the joint 16 between one side frame 11 and the bridge frame 15 is contained within the left-right width D1 of the suspension bracket 61 in a cross-sectional view. In addition, the joint 16 between one side frame 11 and the bridge frame 15 is contained within the front-rear width D2 of the suspension bracket 61 in a vertical cross-sectional view. In a cross-sectional view, the joint 16 between one side frame 11 and the bridge frame 15 is brought close to the center line L1 of the rear suspension 41, and in a vertical cross-sectional view, the joint 16 between one side frame 11 and the bridge frame 15 is brought close to the center line L1 of the rear suspension 41.

[0027] The rear suspension 41 expands and contracts in response to unevenness in the road surface while the vehicle is traveling, thereby absorbing impacts that the rear wheels 37 (see Figure 2) receive from the road surface. At this time, an upward load F1 is input from the rear suspension 41 to the reinforcing member 51 via the suspension bracket 61. The reinforcing member 51 distributes the upward load F1 from the rear suspension 41 and inputs it to one of the side frames 11 and the bridge frame 15. The upward load F1 is received by one of the side frames 11 and the bridge frame 15, which have high rigidity, so that the rear suspension 41 is stably supported by the suspension bracket 61.

[0028] Furthermore, a center line L2 that is parallel to the center line L1 of the rear suspension 41 and passes through the center of one of the side frames 11 is spaced apart in the vehicle width direction from the center line L1 of the rear suspension 41. For this reason, a slight torsional load F2 is generated in one of the side frames 11 due to a thrust load F1 from the rear suspension 41. The bridge frame 15 is directly joined to one of the side frames 11, and is also indirectly joined to one of the side frames 11 via a reinforcing member 51. The bridge frame 15 and the reinforcing member 51 effectively absorb the torsional load F2 generated in the one of the side frames 11.

[0029] As described above, according to the support structure for the rear suspension 41 of this embodiment, the rear suspension 41 is supported by the suspension bracket 61 directly below the joint 16 between one side frame 11 and the bridge frame 15. Therefore, the upward thrust load from the rear suspension 41 is received by the one side frame 11 and the bridge frame 15, which have high rigidity, and the rear suspension 41 is stably supported by the suspension bracket 61, allowing the rear suspension 41 to operate smoothly. Furthermore, cutting of the suspension bracket 61 is not required, which reduces the processing costs for the suspension bracket 61.

[0030] In this embodiment, the suspension bracket is installed on one of the side frames via a reinforcing member, but the suspension bracket 72 may also be installed directly on one of the side frames 71, as shown in variant example 1 in Figure 7.

[0031] In this case, a suspension bracket 72 with a generally M-shaped cross section is joined to the underside of one side frame 71, which has a circular cross section. The upper surface of an upper plate 73 of the suspension bracket 72 is formed into an arc-shaped cross section along the underside of one side frame 71, and the upper surface of the suspension bracket 72 is joined over a wide area to the underside of one side frame 71. The highly rigid one side frame 71 withstands the upward thrust load from the rear suspension (not shown), and the rear suspension is stably supported by the suspension bracket 72, allowing the rear suspension to operate smoothly.

[0032] The upper plate 73 of the suspension bracket 72 is curved in a cross section that is convex downward, and base end positions P2 of the pair of side plates 74 are positioned higher than the lowest position P1 of the upper plate 73 of the suspension bracket 72. The pair of side plates 74 have a height dimension that reduces rigidity against bending deformation, but the increased height of the base ends of the pair of side plates 74 reduces the distance D3 from the underside of one side frame 71 to the center position of the mounting hole 75 of the suspension bracket 72. The upper end of the rear suspension is brought closer to one side frame 71, ensuring sufficient storage space for the rear suspension below the side frame 71.

[0033] Furthermore, in this embodiment, the upper end of the rear suspension is supported by the suspension bracket directly below the joint between one side frame and the bridge frame, but for example, as shown in variant example 2 in Figure 8, the upper end of the rear suspension (not shown) may be supported by the suspension bracket 82 directly below one side frame 81.

[0034] In this case, a suspension bracket 82 is installed on the underside of one side frame 81 via a reinforcing member 83. In a bottom view, the upper end of the rear suspension is supported by the suspension bracket 82 at a location where the suspension bracket 82 overlaps with the center line L3 of the one side frame 81. The upward thrust load from the rear suspension is absorbed by the center of the one side frame 81, which has high rigidity, and the rear suspension is stably supported by the suspension bracket 82, allowing the rear suspension to operate smoothly.

[0035] Furthermore, the reinforcing member 83 extends along one of the side frames 81, and side walls 84a, 84b rising from both side edges of the reinforcing member 83 are joined to the side frame 81, increasing the rigidity of the reinforcing member 83. The lower surface of the reinforcing member 83 and the upper surface of the suspension bracket 82 are each formed flat, and the upper surface of the suspension bracket 82 is joined to the lower surface of the reinforcing member 83. When joining the reinforcing member 83 and the suspension bracket 82, their positions can be easily adjusted in the front-to-back and left-to-right directions, and the suspension bracket 82 can be installed in an appropriate position relative to one of the side frames 81.

[0036] In addition, in this embodiment, the suspension bracket supports the rear suspension directly below the joint between one side frame and the bridge frame, but it is sufficient that the suspension bracket supports the rear suspension directly below at least one side frame. In other words, it is sufficient that the suspension bracket supports the upper end of the suspension at the location where the suspension bracket overlaps one side frame when viewed from below.

[0037] Furthermore, in this embodiment, the suspension bracket is formed in an inverted U shape, but the suspension bracket may be formed in any manner that allows it to support the rear suspension.

[0038] Furthermore, the suspension support structure of this embodiment is not limited to the saddle-ride type vehicle described above, and may be employed in other types of saddle-ride type vehicles. Note that a saddle-ride type vehicle is not limited to all vehicles in which the rider sits astride on a seat, but also includes scooter-type vehicles in which the rider does not sit astride on a seat.

[0039] As described above, the first aspect is a support structure for a suspension (rear suspension 41) that absorbs impacts that a rear wheel (37) receives from the road surface. The support structure includes a pair of side frames (11, 71, 81) extending upward and rearward from in front of the rear wheel, and a suspension bracket (61, 72, 82) installed on the underside of one of the side frames. The upper end portion (42) of the suspension is supported by the suspension bracket at a location where the suspension bracket overlaps with the one of the side frames in a bottom view. According to this configuration, the suspension is supported by the suspension bracket directly below the one of the side frames. Therefore, the upward thrust load from the suspension is absorbed by the one of the side frames, which has high rigidity, and the suspension is stably supported by the suspension bracket, allowing the suspension to operate smoothly. Furthermore, machining of the suspension bracket is not required, thereby reducing the cost of manufacturing the suspension bracket.

[0040] In the second aspect, the suspension bracket of the first aspect has a pair of side plates (63, 74) that sandwich the upper end of the suspension bracket, and the pair of side plates are fastened together with fastening members (bolts 64, nuts 65) to support the upper end of the suspension on the suspension bracket. With this configuration, the pair of side plates have low rigidity against bending deformation, and can be easily bent by fastening them with the fastening members. Even if the pair of side plates are formed short, they can be fastened together with the fastening members, and the upper end of the suspension can be brought closer to one of the side frames, ensuring sufficient storage space for the suspension below the side frame.

[0041] The third aspect of the present invention is the same as the first or second aspect, except that it includes a bridge frame (15) connecting a pair of side frames (11) above the rear wheels and a reinforcing member (51) reinforcing the joint (16) between one of the side frames and the bridge frame. A suspension bracket (61) is installed on the underside of one of the side frames via the reinforcing member, and the upper end of the suspension is supported by the suspension bracket at a location where the suspension bracket overlaps the joint between the one of the side frames and the bridge frame in a bottom view. With this configuration, the suspension is supported by the suspension bracket directly below the joint between the one of the side frames and the bridge frame. Therefore, the one of the side frames and the bridge frame can withstand the upward thrust load from the suspension, and the suspension is stably supported by the suspension bracket, allowing the suspension to operate smoothly. Furthermore, the suspension bracket can reinforce the joint between the one of the side frames and the bridge frame.

[0042] In the fourth aspect, in the third aspect, the reinforcing member is formed in a T-shape by a vertical plate (52) that runs along one of the side frames and a horizontal plate (53) that runs along the bridge frame. With this configuration, the torsional load acting on one of the side frames is borne by the reinforcing member, and the suspension is stably supported by the suspension bracket, allowing the suspension to operate smoothly.

[0043] In a fifth aspect, in the third or fourth aspect, the lower surface of the reinforcing member and the upper surface of the suspension bracket are formed flat, and the upper surface of the suspension bracket is joined to the lower surface of the reinforcing member. With this configuration, the positional relationship between the parts is not restricted by the joining surfaces. The position of the suspension bracket relative to the reinforcing member can be adjusted forward / backward and left / right, and the suspension bracket can be installed in an appropriate position relative to one of the side frames.

[0044] In the sixth aspect, in the first or second aspect, the upper surface of the suspension bracket (72) is formed along the lower surface of one of the side frames (71), and the upper surface of the suspension bracket is joined to the lower surface of the one of the side frames. With this configuration, the suspension bracket can be joined to one of the side frames over a wide area. The one of the side frames, which has high rigidity, can withstand the upward thrust load from the suspension, and the suspension is stably supported by the suspension bracket, allowing the suspension to operate smoothly.

[0045] In the seventh aspect, in the sixth aspect, the base end position (P2) of the pair of side plates (74) is positioned higher than the lowest position (P1) of the upper surface of the suspension bracket. With this configuration, the upper end of the suspension can be brought closer to one of the side frames, making it possible to ensure sufficient storage space for the suspension below the side frame.

[0046] In the eighth aspect, in the first or second aspect, a reinforcing member (83) that reinforces one of the side frames (81) is provided, a suspension bracket (82) is installed on the underside of the one of the side frames via the reinforcing member, and the upper end of the suspension is supported by the suspension bracket at a location where the suspension bracket overlaps the center line (L3) of the one of the side frames in a bottom view. With this configuration, the upward thrust load from the suspension is received by the center of the one of the side frames, which has high rigidity, and the suspension is stably supported by the suspension bracket, allowing the suspension to operate smoothly.

[0047] In the ninth aspect, in the eighth aspect, the lower surface of the reinforcing member and the upper surface of the suspension bracket are formed flat, and the upper surface of the suspension bracket is joined to the lower surface of the reinforcing member. With this configuration, it is easy to adjust the positions of the reinforcing member and the suspension bracket in the front-to-rear and left-to-right directions when joining them, and the suspension bracket can be installed in an appropriate position relative to one of the side frames.

[0048] Although the present embodiment has been described, other embodiments may be made by combining the above-described embodiments and modifications in whole or in part.

[0049] Furthermore, the technology of the present invention is not limited to the above-described embodiments, and various changes, substitutions, and modifications may be made without departing from the spirit of the technical idea. Furthermore, if the technical idea can be realized in a different way due to technological advances or other derived technologies, it may be implemented using that method. Therefore, the claims cover all embodiments that may fall within the scope of the technical idea. [Explanation of symbols]

[0050] 11, 71, 81: Side frame 15: Bridge frame 16: Joint 37: Rear wheel 41: Rear suspension (suspension) 42: Upper end 51, 83: Reinforcement members 52: Vertical board 53:Horizontal board 61, 72, 82: Suspension bracket 63, 74: Side panels 64: Bolt (fastening member) 65: Nut (fastening member) L3: Center line of side frame P1: The lowest point on the top of the suspension bracket P2: Base end position of side plate

Claims

1. A suspension support structure that absorbs shocks that rear wheels receive from the road surface, a pair of side frames extending upward and rearward from in front of the rear wheels; a suspension bracket installed on the lower side of one of the side frames, A suspension support structure characterized in that, when viewed from below, the upper end of the suspension is supported by the suspension bracket at a location where the suspension bracket overlaps with the one side frame.

2. the suspension bracket has a pair of side plates that sandwich an upper end portion of the suspension bracket, 2. The suspension support structure according to claim 1, wherein the pair of side plates are fastened together with fastening members, and an upper end of the suspension is supported by the suspension bracket.

3. a bridge frame connecting the pair of side frames above the rear wheels; a reinforcing member that reinforces a joint between the one side frame and the bridge frame, the suspension bracket is installed on the underside of the one side frame via the reinforcing member, 3. The suspension support structure according to claim 1, wherein, when viewed from below, the upper end of the suspension is supported by the suspension bracket at a point where the suspension bracket overlaps the joint between the one side frame and the bridge frame.

4. 4. The suspension support structure according to claim 3, wherein the reinforcing member is formed in a T-shape by a vertical plate along the one side frame and a horizontal plate along the bridge frame.

5. 4. The suspension support structure according to claim 3, wherein the lower surface of the reinforcing member and the upper surface of the suspension bracket are formed flat, and the upper surface of the suspension bracket is joined to the lower surface of the reinforcing member.

6. 3. The suspension support structure according to claim 1, wherein the upper surface of the suspension bracket is formed along the lower surface of the one of the side frames, and the upper surface of the suspension bracket is joined to the lower surface of the one of the side frames.

7. 7. The suspension support structure according to claim 6, wherein base ends of the pair of side plates are positioned higher than a lowest point on the upper surface of the suspension bracket.

8. a reinforcing member for reinforcing the one side frame; the suspension bracket is installed on the underside of the one side frame via the reinforcing member, 3. The suspension support structure according to claim 1, wherein the upper end of the suspension is supported by the suspension bracket at a point where the suspension bracket overlaps the center line of the one side frame when viewed from below.

9. 9. The suspension support structure according to claim 8, wherein the lower surface of the reinforcing member and the upper surface of the suspension bracket are formed flat, and the upper surface of the suspension bracket is joined to the lower surface of the reinforcing member.

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