Vehicle suspension structure

Abstract

To reduce stress concentration caused by loads in a vertical direction inputted to a hub carrier and by reaction force from a trailing arm, so that the loads can be dispersed over surrounding members.SOLUTION: An axle suspension-type vehicular suspension structure comprises hub carriers 30 and a connection member 20 connecting the hub carriers 30 to each other. A connection part 21 that is connected to the hub carriers 30 is provided at an outside part of the connection member 20, and an intermediate part of the connection member 20 extends in a width direction while being offset from a drive shaft to a rear side of a vehicle. A bent part 23 bent forward and led to the connection part 21 is provided at an outside portion of the intermediate part 22. The hub carrier 30 has a cylindrical part 30a, where a first penetration-hole through which the drive shaft penetrates is formed at an outside end of the cylindrical portion 30a and a spring installation portion 31a is provided at an upper portion of the cylindrical portion 30a.SELECTED DRAWING: Figure 5

Description

[Technical Field]

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

[0002] A De Dion rear suspension, which is an example of an axle-mounted suspension, is located at the rear of a vehicle. As disclosed in Patent Document 1, for example, this type of rear suspension has an axle beam and carriers attached to both ends of the axle beam, with hubs attached. The hubs are rotatably supported via hub bearings attached to the carrier.

[0003] The hub carrier also has a spring mounting portion to which the suspension spring of the rear suspension is attached. Therefore, the hub carrier needs to have a certain strength to withstand loads in the vertical direction of the vehicle. In this example, an attachment / detachment opening is formed on the inner surface of the hub carrier to allow the hub bearing to be attached and detached. The hub carrier also has an upper protrusion and a lower protrusion located above and below the attachment / detachment opening, and the upper protrusion and the lower protrusion are connected by a connecting portion extending in the vertical direction between the protrusions on both sides.

[0004] This configuration aims to prevent a decrease in the vertical strength of the hub carrier due to the large mounting opening, and also to prevent damage to the hub carrier in the rear suspension even when a load acts on the hub carrier in the vertical direction due to the vehicle bumping, etc. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-071496 Summary of the Invention [Problem to be solved by the invention]

[0006] The hub carrier in the above example maintains a certain strength against loads acting in the vertical direction of the vehicle. As described above, the hub carrier has not only an outer peripheral member, but also an upper protrusion and a lower protrusion, which are connected to form a reinforcement structure. Therefore, the structure in the above example increases the weight of the hub carrier.

[0007] Furthermore, an increase in the weight of the hub carrier means an increase in the weight below the suspension spring, which may affect the vehicle's dynamic performance. Furthermore, because additional components are added to the hub carrier, the layout of the hub carrier is limited, potentially reducing design freedom. Therefore, the structure of the above example leaves room for improvement in terms of reducing stress concentration and effectively distributing the load in the vertical direction of the vehicle input from the suspension spring to the hub carrier to the surrounding components.

[0008] The present invention has been made to solve the above-mentioned problems, and its purpose is to provide a vehicle suspension structure that can reduce stress concentration and effectively distribute it to surrounding components in response to the load in the vertical direction of the vehicle input from the suspension spring to the hub carrier and the reaction force from the trailing arm. [Means for solving the problem]

[0009] In order to achieve the above object, the vehicle suspension structure of the present invention has an axle-suspended vehicle suspension structure having a hub carrier through which a drive shaft extending in the vehicle width direction is disposed and to which a wheel hub is attached, and a connecting member connecting the hub carriers on both sides in the vehicle width direction, wherein the connecting member has a connection portion on the outer side in the vehicle width direction that is connected to the hub carrier, and a middle portion in the vehicle width direction of the connecting member extends in the vehicle width direction offset from the drive shaft towards the rear of the vehicle, and the outer side of the middle portion in the vehicle width direction has a bent portion that bends towards the front of the vehicle and is connected to the connection portion, the hub carrier has a cylindrical portion that extends in the vehicle width direction, and the outer end of the cylindrical portion has a through hole through which the drive shaft passes, and a spring installation portion on which a suspension spring is installed is provided at an upper portion of the cylindrical portion, The cylindrical portion is provided with an arm attachment portion to which a trailing arm extending in the front-to-rear direction of the vehicle is attached, and the arm attachment portion is configured to surround a part of the cylindrical portion from the underside of the vehicle, and two front vertical walls protruding from the front portion of the cylindrical portion toward the front of the vehicle and extending in the vertical direction of the vehicle are provided at the front portion of the arm attachment portion so as to face each other at a distance in the vehicle width direction, and two rear vertical walls protruding from the rear portion of the cylindrical portion toward the rear of the vehicle and extending in the vertical direction of the vehicle are provided so as to face each other at a distance in the vehicle width direction. There are. [Effects of the Invention]

[0010] According to the present invention, it is possible to reduce stress concentration and effectively distribute it to surrounding components against the load in the vertical direction of the vehicle input from the suspension spring to the hub carrier and the reaction force from the trailing arm. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a perspective view showing an embodiment of a vehicle suspension structure according to the present invention; [Figure 2] FIG. 2 is a plan view of the rear suspension of FIG. 1 as seen from above the vehicle. [Figure 3] FIG. 2 is a front view of FIG. [Figure 4] FIG. 2 is an enlarged perspective view showing the hub carrier and other components on the right side of FIG. 1. [Figure 5] 5 is a perspective view of the hub carrier of FIG. 4 as viewed from the inside in the vehicle width direction. [Figure 6] FIG. 4 is an enlarged front view showing the hub carrier on the right side of FIG. 3. [Figure 7] FIG. 7 is a rear view of the hub carrier and the like in FIG. 6 as seen from the rear of the vehicle. [Figure 8] FIG. 7 is a side view of the hub carrier of FIG. 6 as seen from the inside in the vehicle width direction. [Figure 9] 2 is an enlarged perspective view of the hub carrier and connecting member of FIG. 1 to which a drive shaft, a suspension spring, and a lateral rod are attached, as viewed from inside the vehicle. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, an embodiment of a vehicle suspension structure for a vehicle according to the present invention will be described with reference to the drawings (FIGS. 1 to 9). In the drawings, the direction of the arrow Fr indicates the front in the longitudinal direction of the vehicle. In the description of the embodiment, the "front portion (front end) and the rear portion (rear end)" correspond to the front and rear in the longitudinal direction of the vehicle. In addition, the arrows R and L indicate the right and left sides when an occupant looks ahead of the vehicle.

[0013] The vehicle suspension structure of this embodiment will be described using as an example the structure of an axle-suspended rear suspension 10 to which a rear wheel (wheel) 11 is attached. As shown in Figures 1 to 9, the rear suspension 10 of this embodiment has a hub carrier 30 through which a drive shaft 12 extending in the vehicle width direction is disposed and which is provided with a hub (not shown) to which the rear wheel 11 is fixed, and a connecting member 20 which connects the hub carriers 30 on both sides in the vehicle width direction. The hub is rotatably attached to the hub carrier 30 via a hub bearing (not shown).

[0014] First, the connecting member 20 will be described. As shown in Figures 1 to 3, the connecting member 20 is a member that extends in the vehicle width direction as a whole, and a connecting portion 21 that connects to a hub carrier 30 is provided on the outer side of the connecting member 20 in the vehicle width direction. Furthermore, a middle portion 22 in the vehicle width direction of the connecting member 20 extends in the vehicle width direction, offset toward the rear of the vehicle from the drive shaft 12 that transmits driving force to the rear wheels 11. A rod mounting bracket 15 to which a lateral rod 17 (Figure 9) is attached is joined to the middle portion 22. Furthermore, a bent portion 23 that bends toward the rear of the vehicle and connects to the connecting portion 21 is provided on the outer side of the middle portion 22 in the vehicle width direction.

[0015] The bent portion 23 bends outward in the vehicle width direction as it moves toward the rear of the vehicle. Furthermore, the bent portion 23 extends at an inclination outward in the vehicle width direction as it moves toward the rear of the vehicle, and is connected to the inner end in the vehicle width direction of the connecting portion 21. The connecting portion 21 extends in the vehicle width direction, and the outer end in the vehicle width direction of the connecting portion 21 is inserted into and fixed to a second through-hole 35b (described later) of the hub carrier 30.

[0016] Next, the hub carrier 30 will be described. As shown in Figures 4 to 8, the hub carrier 30 of this embodiment has an upper member 31, a lower member 33, an outer member 35, an absorber receiving member 49, a front bracket 41, and a rear bracket 45. The upper member 31, the lower member 33, and the outer member 35 form the main body of the hub carrier 30, and the upper member 31 and the lower member 33 form a cylindrical portion 30a extending in the vehicle width direction. Each member will be described below.

[0017] The upper member 31 is made of a metal material, has a predetermined length in the vehicle width direction, is curved so as to convex upward toward the vehicle, and forms a roughly semicircular shape convex upward toward the vehicle when viewed in the vehicle width direction. A spring mounting portion 31a on which the suspension spring 19 is mounted is provided at the top of the upper member 31. The spring mounting portion 31a protrudes upward from the top of the upper member 31 and has a roughly circular, flat surface facing upward toward the vehicle. The suspension spring 19 is mounted on this surface (FIG. 9).

[0018] The lower end portion at the front side of the upper member 31 extends in the vehicle width direction, and the lower member 33 is joined to this portion by, for example, welding, etc. As shown in Fig. 5, the outer end portion of the upper member 31 in the vehicle width direction is formed in a substantially semicircular shape as described above, and the outer member 35 is joined to this portion by welding, etc.

[0019] 2, 5, and 6, the rear portion of the upper member 31 is provided with an extension 31b that protrudes inward in the vehicle width direction. The extension 31b will be described later. The lower end of the rear portion of the upper member 31 and the lower end of the rear portion of the extension 31b extend continuously in the vehicle width direction, and these portions are joined to the upper surface of the connection portion 21 of the connecting member 20 by welding or the like.

[0020] The lower member 33 is a member disposed below the upper member 31 and is made of a metal material. Like the upper member 31, the lower member 33 has a predetermined length in the vehicle width direction. Furthermore, the lower member 33 forms a substantially semicircular shape that opens toward the top of the vehicle when viewed in the vehicle width direction. The upper end portion of the front portion of the lower member 33 extends in the vehicle width direction, and as described above, the lower end portion of the front portion of the upper member 31 is joined to this portion. Furthermore, the outer end portion of the lower member 33 in the vehicle width direction is formed in a substantially semicircular shape as described above, and, like the upper member 31, the outer member 35 is joined to this portion by welding or the like. Furthermore, the upper end portion of the rear portion of the lower member 33 extends in the vehicle width direction, and the lower surface of the connection portion 21 of the connecting member 20 is joined to this portion by welding or the like.

[0021] As shown in Figures 5 and 8, an upper member 31 and a lower member 33 are joined together to form a hollow main body with a so-called "monaka" structure. A cylindrical portion 30a extending in the vehicle width direction is formed in the main body. The cylindrical portion 30a and the connection portion 21 of the connecting member 20 extend in the vehicle width direction and are parallel to each other. A width direction opening 30b extending in the vehicle width direction is provided at the rear of the cylindrical portion 30a. In this example, when viewed from the inside in the vehicle width direction with the upper member 31 and the lower member 33 joined together, a so-called C-shape opening toward the rear of the vehicle is formed, as shown in Figure 5.

[0022] In this embodiment, the lower end of the rear portion of the upper member 31 and the upper end of the rear portion of the lower member 33 are spaced apart in the vehicle vertical direction, and this space forms the widthwise opening 30b. The connecting portion 21 of the connecting member 20 is fixed to the rear of the cylindrical portion 30a while being disposed within the widthwise opening 30b. In this example, the upper and lower surfaces of the connecting portion 21 of the connecting member 20 are joined to the edges of the widthwise opening 30b.

[0023] The outer member 35 is made of a metal material and is attached to the outer sides of the upper member 31 and the lower member 33 in the vehicle width direction, and is a plate-shaped member that closes the vehicle width direction end of the cylindrical portion 30a and extends in the front-to-rear direction of the vehicle. The outer member 35 has a first through-hole (through-hole) 35a through which the drive shaft 12 is disposed, and a second through-hole 35b to which the connecting member 20 is attached.

[0024] Four bolt holes 35d for fixing fixing members 37 (described later) are formed around first through hole 35a (FIG. 8). The four bolt holes 35d are arranged at equal intervals in the circumferential direction around first through hole 35a. More specifically, two bolt holes 35d are arranged above first through hole 35a with an interval between them in the vehicle fore-and-aft direction, and two bolt holes 35d are arranged below first through hole 35a with an interval between them in the vehicle fore-and-aft direction (FIG. 8).

[0025] 4, 6, and 7, the fixing member 37 is a plate-shaped member with a through hole formed in the center, which is in communication with the first through hole 35a. The fixing member 37 has four through holes formed in positions corresponding to the four bolt holes 35d of the outer member 35, and with the through holes in communication with the bolt holes 35d, bolts 39 are inserted into the through holes and screwed into the bolt holes 35d, thereby fastening the fixing member 37 to the outer member 35.

[0026] 1 and 4, the fixing member 37 is formed with four hub mounting bolt holes 37a for fixing the hub. The hub mounting bolt holes 37a are arranged radially inward of the first through hole 35a with respect to the four through holes of the fixing member 37. The hub is fastened to the outer surface of the fixing member 37 in the vehicle width direction with bolts (not shown).

[0027] In this embodiment, the spring mounting portion 31a is provided on the upper part of the cylindrical portion 30a formed by the upper member 31 and the lower member 33. Also, as described above, the upper end portion of the rear side of the upper member 31 is joined to the connection portion 21 of the connecting member 20. That is, in this embodiment, the spring mounting portion 31a is connected to the connecting member 20 via the cylindrical rear wall portion of the upper member 31. By forming the hub carrier 30 into a cylindrical shape, it is possible to reduce stress concentration with respect to the load input from the suspension spring 19 and to distribute the stress due to the load to the trailing arm 14 and the connecting member 20, and as a result, it is possible to improve the rigidity and strength of the hub carrier 30.

[0028] Furthermore, as described above, the widthwise opening 30b is joined to the connection portion 21 of the connecting member 20, so that the load can be efficiently transmitted to the connecting member 20, stress concentration in the hub carrier 30 can be suppressed, and the amount of deformation of the hub carrier 30 can be reduced.

[0029] In this embodiment, the cylindrical portion 30a is provided with an arm mounting portion 30d to which the trailing arm 14 extending in the fore-and-aft direction of the vehicle is attached (FIG. 9). The arm mounting portion 30d has a front bracket 41 and a rear bracket 45, and these brackets are configured to surround a portion of the cylindrical portion 30a from below the vehicle.

[0030] The front bracket 41 has a top surface portion 42 and two front vertical walls 43. The front vertical walls 43 protrude forward from the front portion of the cylindrical portion 30a and extend in the vehicle up-down direction. As shown in FIGS. 4, 5, and 8, the upper end of the front vertical wall 43 is located higher than the spring mounting portion 31a. The lower end of the front vertical wall 43 is located at the lower end of the cylindrical portion 30a. The rear end of the front vertical wall 43 has an arc shape along the outer peripheral surface of the cylindrical portion 30a. The lower portion of the front end of the front vertical wall 43 extends at an incline toward the front of the vehicle as it extends upward toward the vehicle. The length of the front wall portions in the vehicle fore-and-aft direction increases as it extends upward toward the vehicle. An attachment hole 43a to which the trailing arm 14 is rotatably attached is provided in the upper portion of the front vertical wall 43. The two front vertical walls 43 are arranged opposite each other with a gap between them in the vehicle width direction. The top surface portion 42 extends in the vehicle width direction so as to connect the upper ends of the two front vertical walls 43 together.

[0031] The rear bracket 45 has a rear surface portion 46 and two rear vertical walls 47. The rear vertical walls 47 protrude rearward from the rear of the cylindrical portion 30a and extend in the vehicle vertical direction. As shown in FIG. 8 , the upper end of the rear vertical wall 47 is located slightly above the vehicle relative to the lower end of the rear portion of the upper member 31. The lower end of the rear vertical wall 47 is located to correspond to the lower end of the front bracket 41. The front end of the rear vertical wall 47 has an arc shape along the outer peripheral surface of the cylindrical portion 30a. The rear end of the rear vertical wall 47 extends in the vehicle vertical direction. The length of the rear vertical wall 47 in the vehicle longitudinal direction increases toward the bottom of the vehicle. An attachment hole for attaching the trailing arm 14 is provided in the lower part of the rear vertical wall 47. The two rear vertical walls 47 are arranged opposite each other with a gap between them in the vehicle width direction. The rear surface portion 46 faces the rear of the vehicle and extends in the vehicle width direction so as to connect the upper ends of the two rear vertical walls 47. An absorber receiving member 49, on which the shock absorber 18 (FIG. 9) is installed, is joined to the rear surface portion 46. The absorber receiving member 49 is also joined to the rear surface of the bent portion 23 of the connecting member 20.

[0032] The rigidity of the hub carrier 30 can be further improved by the front vertical wall 43 and rear vertical wall 47 that are provided circumferentially surrounding the outer periphery of the cylinder. In this embodiment, the two rear vertical walls 47 are joined by welding or the like to the rear surface of the connection portion 21 of the connecting member 20. This allows the contact points of the hub carrier 30, trailing arm 14, and connecting member 20 to be close to each other, and also makes it possible to distribute the load acting on the hub carrier 30 to the trailing arm 14 and connecting member 20.

[0033] In this embodiment, as described above, the upper member 31 is provided with the extension portion 31b. The extension portion 31b protrudes inward in the vehicle width direction at the rear of the cylindrical portion 30a, and the inner end of the extension portion 31b in the vehicle width direction extends along the longitudinal direction of the bent portion 23. In other words, the inner end of the extension portion 31b in the vehicle width direction is inclined inward in the vehicle width direction toward the rear of the vehicle. The inner end of the extension portion 31b in the vehicle width direction and the connecting portion 21 are formed to be continuous with each other in the inclined direction. As described above, the lower portion of the extension portion 31b is joined to the connecting member 20. Furthermore, in this example, a portion of the spring installation portion 31a is arranged in the extension portion 31b.

[0034] By providing the extension portion 31b, the input from the suspension spring 19 can be effectively distributed not only to the hub carrier 30 but also to the connecting member 20, thereby reducing the load concentration on the hub carrier 30 and enabling a lighter structure.

[0035] In this embodiment, a hub fixing portion 38 is provided on the outer portion of the cylindrical portion 30a in the vehicle width direction. In this example, the hub fixing portion 38 is provided on the fixing member 37 that is fixed to the outer member 35 as described above. In addition, the hub fixing portion 38 has a hub fixed to an inner region of the cylindrical portion 30a on the outer side in the vehicle width direction. In this way, by surrounding and fixing the opening (first through hole 35a) on the outer side in the vehicle width direction of the cylindrical portion 30a with an integrally formed member that has high rigidity, it is possible to further improve the rigidity of the cylindrical portion 30a and suppress deformation due to load input.

[0036] The description of the present embodiment is merely an example for explaining the present invention, and does not limit the invention described in the claims. Furthermore, the configuration of each part of the present invention is not limited to the above embodiment, and various modifications are possible within the technical scope described in the claims.

[0037] In this embodiment, the hub carrier 30 is configured with the cylindrical portion 30a, the upper member 31 and the lower member 33 arranged vertically, but is not limited to this. The cylindrical portion 30a may be configured with a single member. [Explanation of symbols]

[0038] 10. Rear suspension 11 Rear wheel 12 Drive shaft 14 Trailing arm 15 Rod mounting bracket 17 Lateral Rod 18 Shock absorber 19 Suspension spring 20 Connecting parts 21 Connection 22 Middle section 23 Bend 30 Hub Carrier 30a Cylindrical part 30b Width opening 30d Arm mounting part 31 Upper member 31a Spring installation part 31b Extension 33 Lower part 35 Outer member 35a First through hole (through hole) 35b Second through hole 35d bolt hole 37 Fixing member 37a Hub mounting bolt holes 38 Hub fixing part 41 Front bracket 42 Top section 43 Front vertical wall 43a Mounting hole 45 Rear bracket 46 Rear part 47 Rear vertical wall 49 Absorber receiving member

Claims

1. A suspension structure for an axle-suspended vehicle includes a hub carrier through which a drive shaft extending in the vehicle width direction is disposed and to which a wheel hub is attached, and a connecting member connecting the hub carriers on both sides in the vehicle width direction, a connecting portion connected to the hub carrier is provided on an outer portion of the connecting member in the vehicle width direction, a middle portion of the connecting member in the vehicle width direction is offset from the drive shaft toward the rear of the vehicle and extends in the vehicle width direction, and a bent portion is provided on the outer portion of the middle portion in the vehicle width direction, which bends toward the front of the vehicle and is connected to the connecting portion, The hub carrier has a cylindrical portion extending in a vehicle width direction, and a through hole through which the drive shaft passes is provided at an outer end of the cylindrical portion in the vehicle width direction, a spring mounting portion on which a suspension spring is mounted is provided on an upper portion of the cylindrical portion; The cylindrical portion is provided with an arm mounting portion to which a trailing arm extending in the vehicle front-rear direction is attached, the arm attachment portion is configured to surround a portion of the cylindrical portion from a lower side of the vehicle, two front vertical walls are provided at a front portion of the arm attachment portion, protruding from a front portion of the cylindrical portion toward the front of the vehicle and extending in a vehicle up-down direction, so as to face each other with a gap therebetween in the vehicle width direction; A vehicle suspension structure, characterized in that two rear vertical walls are provided at the rear of the arm mounting portion, protruding from the rear of the cylindrical portion toward the rear of the vehicle and extending in the vertical direction of the vehicle, facing each other with a gap in the vehicle width direction.

2. An axle-suspended vehicle suspension structure having a hub carrier through which a drive shaft extending in the vehicle width direction is disposed and to which a wheel hub is attached, and a connecting member connecting the hub carriers on both sides in the vehicle width direction, a connecting portion connected to the hub carrier is provided on an outer portion of the connecting member in the vehicle width direction, a middle portion of the connecting member in the vehicle width direction is offset from the drive shaft toward the rear of the vehicle and extends in the vehicle width direction, and a bent portion is provided on the outer portion of the middle portion in the vehicle width direction, which bends toward the front of the vehicle and is connected to the connecting portion, The hub carrier has a cylindrical portion extending in a vehicle width direction, and a through hole through which the drive shaft passes is provided at an outer end of the cylindrical portion in the vehicle width direction, a spring mounting portion on which a suspension spring is mounted is provided on an upper portion of the cylindrical portion; the cylindrical portion and the connection portion of the connecting member are arranged parallel to each other, A vehicle suspension structure, characterized in that a rear portion of the cylindrical portion is provided with a widthwise opening extending in the vehicle width direction, and the connection portion is fixed to the rear portion of the cylindrical portion while being positioned within the widthwise opening.

3. The cylindrical portion is provided with an arm mounting portion to which a trailing arm extending in the vehicle front-rear direction is attached, the arm attachment portion is configured to surround a portion of the cylindrical portion from a lower side of the vehicle, two front vertical walls are provided at a front portion of the arm attachment portion, protruding from a front portion of the cylindrical portion toward the front of the vehicle and extending in a vehicle up-down direction, so as to face each other with a gap therebetween in the vehicle width direction; 3. The vehicle suspension structure according to claim 2, wherein two rear vertical walls are provided at the rear of the arm mounting portion, protruding from the rear of the cylindrical portion toward the rear of the vehicle and extending in the vertical direction of the vehicle so as to face each other with a gap in the vehicle width direction.

4. 4. The vehicle suspension structure according to claim 1, wherein the two rear vertical walls are joined to the connecting portion of the connecting member.

5. an extension portion protruding inward in the vehicle width direction is provided at a rear portion of the cylindrical portion, an inner end of the extension portion in the vehicle width direction extends along the longitudinal direction of the bent portion, and a lower portion of the extension portion is joined to the connecting member; 5. The vehicle suspension structure according to claim 1, wherein a part of the spring mounting portion is disposed in the extension portion.

6. 6. A vehicle suspension structure according to claim 1, wherein a hub fixing portion to which the hub is fixed is provided on the vehicle width direction outer portion of the cylindrical portion, and the hub is fixed within the vehicle width direction outer surface of the cylindrical portion.

7. An axle-suspended vehicle suspension structure having a hub carrier through which a drive shaft extending in the vehicle width direction is disposed and to which a wheel hub is attached, and a connecting member connecting the hub carriers on both sides in the vehicle width direction, a connecting portion connected to the hub carrier is provided on an outer portion of the connecting member in the vehicle width direction, a middle portion of the connecting member in the vehicle width direction is offset from the drive shaft toward the rear of the vehicle and extends in the vehicle width direction, and a bent portion is provided on the outer portion of the middle portion in the vehicle width direction, which bends toward the front of the vehicle and is connected to the connecting portion, The hub carrier has a cylindrical portion extending in a vehicle width direction, and a through hole through which the drive shaft passes is provided at an outer end of the cylindrical portion in the vehicle width direction, a spring mounting portion on which a suspension spring is mounted is provided on an upper portion of the cylindrical portion; an extension portion protruding inward in the vehicle width direction is provided at a rear portion of the cylindrical portion, an inner end of the extension portion in the vehicle width direction extends along the longitudinal direction of the bent portion, and a lower portion of the extension portion is joined to the connecting member; A suspension structure for a vehicle, characterized in that a part of the spring mounting portion is disposed in the extension portion.

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