Suspension device

Abstract

A suspension device includes: a bracket connected to a wheel; the spring is arranged between the bracket and the vehicle body; a torsion beam shaft spaced apart from the bracket and connected to the vehicle body; a first support member extending from the bracket; a second support member extending from the torsion beam shaft and disposed to face the first support member; and a connecting member disposed between the first support member and the second support member and connecting the first support member and the second support member to each other. According to an embodiment of the present disclosure, a rotational force transmitted from a bracket to a pipe when a wheel bumps may be offset by elastic deformation of a first bush and a second bush spaced apart from each other based on a center of the pipe, and rotation of the bracket may be substantially prevented.

Description

TECHNICAL FIELD

[0001] Exemplary embodiments of the present disclosure relate to a suspension device, and more particularly, to a rear wheel suspension device of an electric vehicle. BACKGROUND

[0002] Generally, a suspension of a vehicle is a device that connects an axle and a vehicle body to substantially prevent vibrations or shocks applied from a road surface during travel from being directly transmitted to the vehicle body, thereby substantially preventing damage to the vehicle body or cargo and improving ride comfort.

[0003] Recently, eco-friendly vehicles such as electric vehicles have been increasingly developed, and in the electric vehicles, a suspension device capable of securing a space for placing a large-capacity battery to increase an all-electric range (AER) has been actively developed.

[0004] Background art of the suspension device is disclosed in Korean Patent Application Publication No. 10-2022-0162460 (published on December 8, 2022, entitled "Torsion beam axle device for vehicle"). SUMMARY

[0005] An object of the present disclosure is to provide a suspension device capable of reducing a load input to a component and improving space utilization.

[0006] An object of the present disclosure is to provide a suspension device capable of securing a battery placement space.

[0007] An object of the present disclosure is to provide a suspension device capable of reducing weight and cost.

[0008] An object of the present disclosure is to provide a suspension device having improved formability.

[0009] To solve the above problems, a suspension device according to an aspect of the present disclosure includes a carrier connected to a wheel, a spring disposed between the carrier and a vehicle body, a torsion beam axle spaced apart from the carrier and connected to the vehicle body, a first support member extending from the carrier, a second support member extending from the torsion beam axle and disposed to face the first support member, and a connection member disposed between the first support member and the second support member and connecting the first support member and the second support member to each other.

[0010] The carrier can include a first carrier body disposed to face the wheel and rotatably support the wheel, and a second carrier body extending from the first carrier body in a first direction and support the spring.

[0011] The torsion beam axle can include a torsion bar disposed in parallel with a width direction of the vehicle body, and a rear control arm connected to the torsion bar and supporting the torsion bar with respect to the vehicle body.

[0012] The torsion bar can be disposed behind a center axis of the wheel.

[0013] The connecting member can include a first bushing connected to the first support member, a second bushing connected to the second support member and disposed to face the first bushing, and a pipe disposed between the first and second bushings and including both ends connected to the first and second bushings, respectively.

[0014] The first and second bushings can be elastically deformable.

[0015] The pipe can be disposed in parallel with the first direction.

[0016] The pipe can include a first pipe extending from the first bushing, and a second pipe extending from the second bushing and connected to the first pipe to be reciprocally movable in a direction parallel with the first direction.

[0017] The second pipe can be rotatably connected to the first pipe with the first direction as a center and reciprocally movable in the direction parallel with the first direction according to a rotation direction.

[0018] The connecting member can further include a fastening bar configured to pass through the first bushing, the pipe, and the second bushing, a first pressing member connected to one end of the fastening bar and pressing the first bushing toward the second bushing, and a second pressing member connected to the other end of the fastening bar and pressing the second bushing toward the first bushing.

[0019] A suspension device according to an aspect of the disclosure includes a carrier connected to a wheel, a spring disposed between the carrier and a vehicle body, a torsion beam axle spaced apart from the carrier and connected to the vehicle body, a carrier support member extending from the torsion beam axle and including first and second carrier support members spaced apart from each other, and a connecting member configured to connect the carrier, the first carrier support member, and the second carrier support member to each other.

[0020] The carrier can include a first carrier body connected to the wheel, and a second carrier body extending from the first carrier body and supporting the spring.

[0021] The torsion beam axle can include a torsion bar disposed in parallel with a width direction of the vehicle body, and a rear control arm connected to the torsion bar and supporting the torsion bar with respect to the vehicle body.

[0022] The torsion bar can be disposed behind a center axis of the vehicle wheel.

[0023] The bracket support member can include a first bracket hole configured to pass through the first bracket support member, a first bracket bushing disposed in the first bracket hole, a second bracket hole configured to pass through the second bracket support member, and a second bracket bushing disposed in the second bracket hole.

[0024] The first bracket body can be disposed between the first bracket bushing and the second bracket bushing.

[0025] The connecting member can include a connector configured to connect the first bracket bushing, the second bracket bushing, and the first bracket body to each other, and a pressing member fastened to the connector and configured to press the first bracket bushing and the second bracket bushing toward the first bracket body.

[0026] The first bracket bushing and the second bracket bushing can be elastically deformable.

[0027] The bracket can include a bracket shock absorber connection member disposed on the second bracket body, and the suspension device can further include a shock absorber connected to the bracket shock absorber connection member and the vehicle body to attenuate an impact transmitted from the vehicle wheel.

[0028] The bracket can include a bracket link arm connection member disposed on the second bracket body, and the suspension device can further include a link arm connected to the bracket link arm connection member and the vehicle body to limit a movement path of the bracket.

[0029] The first bracket body can be disposed to face the vehicle wheel and rotatably support the vehicle wheel.

[0030] The bracket can include a seat groove disposed in the second bracket body to support the spring, and a spring fixing member disposed in the seat groove to prevent the spring from coming off.

[0031] The torsion beam axle can include a rear control arm hole passing through the rear control arm, and a rear control arm bushing disposed in the rear control arm hole and connectable to the vehicle body.

[0032] The bracket can include a first bracket body hole passing through the first bracket body.

[0033] The bracket may include a first bracket body bushing disposed in a first bracket body hole, and the connector may pass through the first bracket body bushing.

[0034] According to one embodiment of this disclosure, when the wheel bumps, the rotational force transmitted from the bracket to the pipe can be offset by the elastic deformation of a first bushing and a second bushing spaced apart from each other based on the center of the pipe, and the rotation of the bracket can be substantially prevented.

[0035] According to one embodiment of this disclosure, since the first bushing and the second bushing are interconnected via conduits separate from the first support member and the second support member, the magnitude of the load applied to the bracket and the torsion beam axle when the wheel is bumpy can be reduced, and the durability of the assembly can be improved.

[0036] According to one embodiment of this disclosure, since the first support member and the second support member are not directly connected to each other, the thickness of the first support member and the second support member parallel to the first direction can be reduced, thereby reducing the overall weight of the product and improving space utilization.

[0037] According to one embodiment of this disclosure, compared with the case where the first support member and the second support member are directly connected to each other, the gap between the first bushing and the second bushing can be increased, thereby reducing the load applied to the first bushing and the second bushing.

[0038] According to one embodiment of this disclosure, when there is concern that the first support member and the second support member may interfere with adjacent components, the distance between the first bushing and the second bushing can be reduced by adjusting the length of the pipe, thereby ensuring the encapsulation space.

[0039] According to one embodiment of this disclosure, when the load applied from the road surface is expected to increase based on the vehicle's driving conditions, the distance between the first bushing and the second bushing can be increased by adjusting the length of the pipe, thereby increasing the magnitude of the reaction torque generated by the first bushing and the second bushing, and thus reducing the magnitude of the load applied to the first bushing and the second bushing.

[0040] According to one embodiment of this disclosure, space for battery placement can be ensured, and durability under high loads can be improved.

[0041] According to one embodiment of this disclosure, weight and cost can be reduced, and formability can be improved. Attached Figure Description

[0042] Figure 1 This is a diagram schematically illustrating the installation state of a suspension device according to an embodiment of the present disclosure.

[0043] Figure 2 This is a perspective view schematically illustrating the construction of a suspension device according to an embodiment of the present disclosure.

[0044] Figure 3 is an exploded perspective view schematically illustrating a configuration of a suspension device according to an embodiment of the present disclosure.

[0045] Figure 4 is an enlarged view schematically illustrating a configuration of a connecting member according to an embodiment of the present disclosure.

[0046] Figure 5 is a cross-sectional view schematically illustrating a configuration of a connecting member according to an embodiment of the present disclosure.

[0047] Figure 6 is an exploded perspective view schematically illustrating a configuration of a connecting member according to an embodiment of the present disclosure.

[0048] Figure 7 and Figure 8 is a view schematically illustrating an operation process of a suspension device according to an embodiment of the present disclosure.

[0049] Figure 9 is a cross-sectional view schematically illustrating a configuration of a pipe according to another embodiment of the present disclosure.

[0050] Figure 10 and Figure 11 is a view schematically illustrating an operation process of a pipe according to another embodiment of the present disclosure.

[0051] Figure 12 is a view schematically illustrating a mounted state of a suspension device according to still another embodiment of the present disclosure.

[0052] Figure 13 is a perspective view of a suspension device according to still another embodiment of the present disclosure, as viewed from a first perspective.

[0053] Figure 14 is a perspective view of a suspension device according to still another embodiment of the present disclosure, as viewed from a second perspective.

[0054] Figure 15 is an exploded perspective view of a suspension device according to still another embodiment of the present disclosure, as viewed from a second perspective.

[0055] Figure 16 is a view schematically illustrating an operation process of a suspension device according to still another embodiment of the present disclosure.

[0056] Figure 17 is a front view of a first bracket body and a bracket support member of a suspension device according to still another embodiment of the present disclosure.

[0057] Figure 18 is an exploded front view of a first bracket body and a bracket support member of a suspension device according to still another embodiment of the present disclosure.

[0058] Figure 19 and Figure 20 FIG. 10 is a diagram schematically illustrating an operation process of a first bracket body and a bracket support member of a suspension device according to still another embodiment of the disclosure. DETAILED DESCRIPTION

[0059] Hereinafter, embodiments of the disclosure will be described with reference to the accompanying drawings.

[0060] In this process, the thickness of lines or the size of elements shown in the drawings can be exaggerated for the purpose of clarity and convenience in explanation. Furthermore, the terms to be described below are defined in consideration of their functions in the disclosure, and can be changed according to the intention of a user or an operator or practice. Therefore, the terms should be defined on the basis of the disclosure of the specification.

[0061] Furthermore, in the specification, when a certain part is referred to as being "connected (or coupled) to" another part, it can mean that the former is directly connected (or coupled) to the latter, or indirectly connected (or coupled) to the latter with another part interposed therebetween. In the specification, when a certain part "includes (or comprises)" a certain component, it means that the part does not exclude another component, but can further "include (or comprise)" the other component, unless otherwise specified.

[0062] Furthermore, throughout the specification, the same reference numerals can refer to the same components. Even if the same reference numerals or similar reference numerals are not mentioned or described in a specific drawing, they can be described on the basis of other drawings. Furthermore, even if there is a part that is not indicated with a reference numeral in a specific drawing, it can be described on the basis of other drawings. Furthermore, the number, shape, and size of detailed components included in the drawings of the present application, and the relative difference in size are set for the purpose of understanding, and do not limit the embodiments, and can be implemented in various forms.

[0063] Figure 1 FIG. 1 is a diagram schematically illustrating a mounted state of a suspension device according to an embodiment of the disclosure. Figure 2 FIG. 2 is a perspective view schematically illustrating a configuration of a suspension device according to an embodiment of the disclosure. Figure 3 FIG. 3 is an exploded perspective view schematically illustrating a configuration of a suspension device according to an embodiment of the disclosure.

[0064] Referring to Figure 1 and Figure 2 A suspension device according to an embodiment of the disclosure includes a bracket 100, a spring 200, a torsion beam shaft 300, a first support member 400, a second support member 500, and a connection member 600.

[0065] The vehicle body V to be described below can refer to various structures forming the structural backbone of the vehicle, such as a frame main body, a sub-frame, and a vehicle body shell. One example is described below, in which the longitudinal direction of the vehicle body V refers to the direction parallel to the X-axis based on Figure 1 , and the width direction of the vehicle body V refers to the direction parallel to the Y-axis based on Figure 2 .

[0066] The wheel W to be described below can refer to the rear wheel of the vehicle. The center axis of the wheel W can be disposed parallel to the width direction of the vehicle body V.

[0067] The bracket 100 can be connected to the wheel W rotatably mounted on the lower side of the vehicle body V. The bracket 100 can serve as a configuration providing mechanical connection of various suspension components (such as the spring 200 and the torsion beam axle 300 to be described below) between the vehicle body V and the wheel W.

[0068] The bracket 100 can be provided in pairs. One pair of brackets 100 can each be connected to one pair of wheels W disposed opposite each other in the width direction of the vehicle body V.

[0069] The bracket 100 according to the present embodiment can include a first bracket main body 110 and a second bracket main body 120.

[0070] The first bracket main body 110 can form the appearance of one side of the bracket 100, and can rotatably support the wheel W.

[0071] The first bracket main body 110 according to the present embodiment can be disposed to face the wheel W in the width direction of the vehicle body V. The first bracket main body 110 can be spaced apart from the inner surface of the wheel W by a predetermined distance in the width direction of the vehicle body V. The inner surface of the wheel W can refer to the surfaces of the pair of wheels W spaced apart in the width direction of the vehicle body V and facing each other. The first bracket main body 110 can be connected to the wheel W through a wheel bearing B. The first bracket main body 110 can rotatably support the wheel W about the center axis C of the wheel W. The specific shape of the first bracket main body 110 is not limited to the shape shown in Figure 2 and Figure 3 , and the first bracket main body 110 can be designed to have various shapes.

[0072] The second bracket main body 120 forms the appearance of the other side of the bracket 100, and can support the spring 200 to be described below.

[0073] The second bracket main body 120 according to the present embodiment can extend from the first bracket main body 110 in a first direction. One example is described below, in which the first direction is a direction parallel to the width direction of the vehicle body V, i.e., a direction from the first bracket main body 110 toward the center line A of the vehicle body V. However, the first direction is not limited thereto, and can also be a direction inclined at a predetermined angle with respect to the width direction of the vehicle body V. The specific shape of the second bracket main body 120 is not limited toFigure 2 and Figure 3 The second bracket body 120 can be designed to have various shapes as shown in FIGS. 1 to 3.

[0074] The second bracket body 120 can include a seating groove 121 in which a spring 200 to be described below is seated.

[0075] The seating groove 121 according to the present embodiment can be formed in a shape of a groove recessed downward from an upper surface of the second bracket body 120. The seating groove 121 can be provided at an end portion of the second bracket body 120. The seating groove 121 can have a cross section of a substantially circular shape.

[0076] The spring 200 can be provided between the bracket 100 and a vehicle body V. The spring 200 can be elastically deformed. The spring 200 can function as a configuration that generates a load in a direction opposite to a motion of a wheel W by elastic deformation when the wheel W jounces, thereby maintaining a landing state of the wheel W and absorbing an impact input from a road surface. The spring 200 according to the present embodiment can be formed in a shape of a coil spring that is extendable and retractable in a longitudinal direction. A lower portion of the spring 200 can be inserted into the seating groove 121 and fixed to a bottom surface of the seating groove 121. An upper portion of the spring 200 can be fixed to the vehicle body V. The longitudinal direction of the spring 200 can be vertical with respect to the ground. However, the spring 200 is not limited thereto, and can be inclined at a predetermined angle with respect to the ground within a range in which a downward elastic restoring force can be generated when the wheel W jounces.

[0077] A torsion beam axle 300 can be spaced apart from the bracket 100 and can be connected to the vehicle body V. The torsion beam axle 300 can be connected to the bracket 100 by a first support member 400, a second support member 500, and a connection member 600 to be described below.

[0078] The torsion beam axle 300 according to the present embodiment can include a torsion bar 310 and a rear control arm 320.

[0079] The torsion bar 310 can form an outer appearance of a central portion of the torsion beam axle 300 and can be provided spaced apart from the bracket 100. The torsion bar 310 can function as a configuration that absorbs pitching of the vehicle body V that occurs during driving of the vehicle by torsional deformation of itself and improves roll stiffness when the vehicle turns, thereby securing turning stability.

[0080] The torsion bar 310 according to the present embodiment can be formed in a shape of a bar provided in parallel to a width direction of the vehicle body V. A length of the torsion bar 310 can be smaller than a gap between a pair of wheels W.

[0081] The torsion bar 310 can be disposed behind the center axis C of the wheel W. That is, the torsion bar 310 can be disposed at a position spaced apart from the center axis C of the wheel W by a predetermined distance in the longitudinal direction of the vehicle body V. Accordingly, the torsion bar 310 can further improve the packaging efficiency of the battery (not shown) by expanding the space for installing the battery under the vehicle body V. The detailed shape of the torsion bar 310 is not limited to the shape shown in Figure 2 and Figure 3 The torsion bar 310 can be designed to have various shapes.

[0082] The rear control arm 320 can be connected to the torsion bar 310 and can support the torsion bar 310 with respect to the vehicle body V.

[0083] The rear control arm 320 according to the present embodiment can be connected to the end of the torsion bar 310. The rear control arm 320 can be fixed to the end of the torsion bar 310 by various types of coupling methods such as welding and bolting. The end of the rear control arm 320 can extend rearward from the torsion bar 310 and be connected to the vehicle body V. The end of the rear control arm 320 can be rotatably connected to the vehicle body V to absorb displacement that occurs when the wheel W jounces or rebounds. For example, the end of the rear control arm 320 can be rotatably connected to the vehicle body V through a bushing, a bearing, a ball joint, or the like.

[0084] The rear control arm 320 can be provided in pairs. The pair of rear control arms 320 can be spaced apart from each other in the width direction of the vehicle body V. The pair of rear control arms 320 can be connected to both ends of the torsion bar 310, respectively.

[0085] The first support member 400 can extend from the bracket 100. The first support member 400 can serve as a configuration that provides a connection structure between the connection member 600 to be described below and the bracket 100.

[0086] The first support member 400 according to the present embodiment can be formed in a shape having a cantilever extending upward from the first bracket body 110. The first support member 400 can be disposed between the wheel W and the spring 200.

[0087] The second support member 500 can extend from the torsion beam axle 300 and can be disposed to face the first support member 400. The second support member 500 can serve as a configuration that provides a connection structure between the connection member 600 to be described below and the torsion beam axle 300.

[0088] The second support member 500 according to the present embodiment can be formed in a shape having a cantilever extending from the rear control arm 320. The second support member 500 can be disposed to face the first support member 400 in the first direction. The first support member 400 and the second support member 500 can be spaced apart from each other by a predetermined distance in the first direction. Accordingly, the first support member 400 and the second support member 500 can align a longitudinal direction of the connection member 600 to be described below in a direction parallel to the first direction. The second support member 500 can be disposed between the wheel W and the spring 200, and more particularly, between the first support member 400 and the spring 200.

[0089] The connection member 600 can be disposed between the first support member 400 and the second support member 500. The connection member 600 can function as a configuration that connects the first support member 400 and the second support member 500 to each other and cancels a moment that is generated between the first support member 400 and the second support member 500 when the wheel W jounces.

[0090] Figure 4 FIG. 6 is an enlarged view schematically illustrating a configuration of a connection member according to an embodiment of the disclosure. Figure 5 FIG. 7 is a cross-sectional view schematically illustrating a configuration of a connection member according to an embodiment of the disclosure. Figure 6 FIG. 8 is an exploded perspective view schematically illustrating a configuration of a connection member according to an embodiment of the disclosure.

[0091] Referring to Figures 1 to 6 The connection member 600 according to the present embodiment can include a first bushing 610, a second bushing 620, and a pipe 630.

[0092] The first bushing 610 can be connected to the first support member 400. The first bushing 610 can be elastically deformed. The first bushing 610 can be elastically deformed when the wheel W jounces, and can generate a reaction force that cancels a load applied from the wheel W to the bracket 100.

[0093] The first bushing 610 according to the present embodiment can be formed in a shape having various types of bushings including an inner body and an outer body disposed to form concentric circles and an elastic body disposed between the inner body and the outer body.

[0094] The first support member 400 can include a first insertion hole 410 into which the first bushing 610 is inserted. The first insertion hole 410 according to the present embodiment can be formed in a shape having a hole that penetrates both sides of the first support member 400 in the first direction. The first insertion hole 410 can be disposed at an upper end of the first support member 400.

[0095] The first bushing 610 can be inserted into the first insertion hole 410, and an outer circumferential surface of the first bushing 610 can be fixed to an inner circumferential surface of the first insertion hole 410. A central axis of the first bushing 610 can be disposed to be parallel to the first direction.

[0096] The second bushing 620 can be connected to the second support member 500, and can be disposed to face the first bushing 610. The second bushing 620 can be elastically deformed. The second bushing 620 can be elastically deformed when the wheel W jolts, and can generate a reaction force that offsets a load applied to the bracket 100 from the spring 200.

[0097] The second bushing 620 according to the present embodiment can be formed to have various types of bushing shapes, including an inner body and an outer body disposed to form concentric circles, and an elastic body disposed between the inner body and the outer body.

[0098] The second support member 500 can include a second insertion hole 510 into which the second bushing 620 is inserted. The second insertion hole 510 according to the present embodiment can be formed to have a shape of a hole that penetrates both sides of the second support member 500 in the first direction. The second insertion hole 510 can be disposed at an upper end of the second support member 500. A central axis of the second insertion hole 510 can be disposed to be coaxial with the central axis of the first insertion hole 410.

[0099] The second bushing 620 can be inserted into the second insertion hole 510, and an outer circumferential surface of the second bushing 620 can be pressed and fixed to an inner circumferential surface of the second insertion hole 510. A central axis of the second bushing 620 can be disposed to be parallel to the first direction, and can be disposed to be coaxial with the central axis of the first bushing 610.

[0100] A pipe 630 can be disposed between the first bushing 610 and the second bushing 620.

[0101] The pipe 630 according to the present embodiment can be formed to have a shape of a pipe that is hollow inside and open at both ends. Both ends of the pipe 630 can be connected to the first bushing 610 and the second bushing 620, respectively. Accordingly, the pipe 630 can function as a torque arm that causes elastic deformation of the first bushing 610 and the second bushing 620 by transmitting a rotational force generated in the bracket 100 when the wheel W jolts to the first bushing 610 and the second bushing 620, and transmits a reaction torque generated from the first bushing 610 and the second bushing 620 to the bracket 100.

[0102] The pipe 630 can be disposed such that a longitudinal direction thereof is parallel to the first direction. Accordingly, when the wheel W jolts, the pipe 630 can cause a reaction torque generated by elastic deformation of the first bushing 610 and the second bushing 620 to act in a direction in which a torque generated by the wheel W and the spring 200 in the bracket 100 is offset.

[0103] Since the first bushing 610 and the second bushing 620 are connected to each other through the pipe 630 that is separated from the first support member 400 and the second support member 500, the magnitude of load applied to the bracket 100 and the torsion beam axle 300 when the wheel W jolts can be reduced, and the durability of the assembly can be improved. Also, since the first bushing 610 and the second bushing 620 are connected to each other through the pipe 630 that is separated from the first support member 400 and the second support member 500, the thickness of the first support member 400 and the second support member 500 in parallel with the first direction can be reduced, and the overall weight of the product can be reduced and the space utilization can be improved. Also, compared to when the first support member 400 and the second support member 500 are directly connected to each other, the gap between the first bushing 610 and the second bushing 620 can be increased, and thus the magnitude of load applied to the first bushing 610 and the second bushing 620 can be reduced.

[0104] Both ends of the pipe 630 can communicate with the hollows of the first bushing 610 and the second bushing 620.

[0105] The connecting member 600 according to the present embodiment can further include a fastening rod 640, a first pressing member 650, and a second pressing member 660.

[0106] The fastening rod 640 can pass through the first bushing 610, the pipe 630, and the second bushing 620.

[0107] The fastening rod 640 according to the present embodiment can be formed in the shape of a bolt screw having a thread formed on an outer peripheral surface thereof. The fastening rod 640 can be disposed such that the longitudinal direction thereof is parallel to the first direction. The fastening rod 640 can be inserted to sequentially pass through the first bushing 610, the pipe 630 (through the hollow of the first bushing 610 or the second bushing 620), and the second bushing 620. In this case, both ends of the fastening rod 640 can respectively protrude outward from the first bushing 610 and the second bushing 620.

[0108] The first pressing member 650 can be connected to one end of the fastening rod 640, and can press the first bushing 610 toward the second bushing 620.

[0109] The first pressing member 650 according to the present embodiment can be connected to one end of the fastening rod 640 that protrudes outward from the first bushing 610. For example, the first pressing member 650 is formed in the shape of a hollow nut screw having a thread formed on an inner circumferential surface thereof, and can be screw-coupled with an outer circumferential surface of one end of the fastening rod 640. The first pressing member 650 can reciprocate in a longitudinal direction of the fastening rod 640 according to a rotation direction, and can adjust a gap with the first bushing 610. When the first pressing member 650 moves a set distance or more toward the first bushing 610, an inner surface of the first pressing member 650 can come into contact with an outer surface of the first bushing 610, so that the first pressing member 650 can press the first bushing 610 toward the second bushing 620.

[0110] The second pressing member 660 can be connected to the other end of the fastening rod 640, and can press the second bushing 620 toward the first bushing 610.

[0111] The second pressing member 660 according to the present embodiment can be connected to the other end of the fastening rod 640 that protrudes outward from the second bushing 620. For example, the second pressing member 660 can be formed in the shape of a bolt head integrally connected with the other end of the fastening rod 640. When the fastening rod 640 is completely inserted into the first bushing 610, the pipe 630, and the second bushing 620, an inner surface of the second pressing member 660 can come into contact with an outer surface of the second bushing 620, so that the second pressing member 660 can press the second bushing 620 toward the first bushing 610. Accordingly, the first pressing member 650 can always maintain a gap with the first support member 400 and the second pressing member 660 can always maintain a gap with the second support member 500, thereby substantially preventing the first bushing 610 and the second bushing 620 from being detached from the first support member 400 and the second support member 500, respectively.

[0112] Hereinabove, an example in which the first pressing member 650 has the form of a nut screw and the second pressing member 660 has the form of a bolt head has been described. However, the first pressing member 650 and the second pressing member 660 are not limited thereto, and the first pressing member 650 can also have the form of a bolt head and the second pressing member 660 can also have the form of a nut screw.

[0113] The suspension device according to the present embodiment can further include a shock absorber 700 and a link arm 800.

[0114] The damper 700 can be connected to the bracket 100 to attenuate the magnitude of the vibration or impact transmitted from the road surface to the wheel W. The damper 700 according to the present embodiment can be various types of dampers 700 filled with gas, oil, etc. and capable of generating a damping force through expansion movement, as an example. The lower portion of the damper 700 can be connected to the first bracket body 110 or the second bracket body 120 through a ball joint, a bushing, etc. The upper portion of the damper 700 can be connected to the vehicle body V through a ball joint, a bushing, etc.

[0115] The link arm 800 can be connected to the bracket 100 and can support the bracket 100 with respect to the vehicle body V. The link arm 800 can serve as a configuration to provide an additional support force to the bracket 100 independently of the rear control arm 320.

[0116] The link arm 800 according to the present embodiment can be formed in a shape having various types of suspension links. The lower portion of the link arm 800 can be connected to the first bracket body 110 or the second bracket body 120 through a ball joint, a bushing, etc. The upper portion of the link arm 800 can be connected to the vehicle body V through a ball joint, a bushing, etc. The upper portion of the link arm 800 can be located in front of the central axis of the wheel W. That is, the rear control arm 320 and the link arm 800 can be spaced apart in the front and rear in the longitudinal direction of the vehicle body V based on the central axis of the wheel W.

[0117] An operation process of the suspension device according to the present embodiment will be described below.

[0118] Figure 7 and Figure 8 is a diagram schematically illustrating an operation process of the suspension device according to an embodiment of the present disclosure.

[0119] Referring to Figure 7 , during the travel of the vehicle, a load from the road surface can be applied to the wheel W and the first bracket body 110 due to unevenness of the road surface, etc.

[0120] Due to such a load, the spring 200 can be compressed in the longitudinal direction and can apply an elastic force to the second bracket body 120 in a direction toward the road surface.

[0121] When the load applied to the first bracket body 110 through the wheel W and the load applied to the second bracket body 120 through the spring 200 act in opposite directions, a rotational force is generated in the bracket 100, which is centered in a direction intersecting the first direction.

[0122] Since such a rotational force is transmitted to the connection member 600 through the first support member 400 and the first support member 400 and the second support member 500 are integrally connected to the connection member 600, a moment is generated in the center of the duct 630, which is centered in a direction intersecting the first direction.

[0123] Referring toFigure 8 The first bushing 610 and the second bushing 620 are elastically deformed by a moment acting on the center of the pipe 630. More specifically, the first bushing 610 applies a load downward toward the road surface to the first support member 400, and the second bushing 620 applies a load upward from the road surface to the second support member 500.

[0124] Due to the elastic load of the first bushing 610 and the second bushing 620, a counter moment is generated at the center of the pipe 630 to cancel the moment generated by the wheel W and the spring 200, and rotation of the bracket 100 can be substantially prevented.

[0125] A suspension device according to another embodiment of the present disclosure will be described below.

[0126] The suspension device according to the present embodiment can be configured to be identical to the suspension device based on the Figures 1 to 8 suspension device according to an embodiment of the present disclosure, except for the detailed configuration of the pipe 630.

[0127] Therefore, in describing the suspension device according to the present embodiment, only the detailed configuration of the pipe 630 that is different from the suspension device according to an embodiment of the present disclosure will be described.

[0128] The description of the suspension device according to an embodiment of the present disclosure can be applied as is to the remaining configuration of the suspension device according to the present embodiment.

[0129] Figure 9 is a cross-sectional view schematically illustrating the configuration of a pipe according to another embodiment of the present disclosure. Figure 10 and Figure 11 is a view schematically illustrating the operation process of a pipe according to another embodiment of the present disclosure.

[0130] Referring to Figures 9 to 11 The pipe 630 according to the present embodiment can include a first pipe 631 and a second pipe 632.

[0131] The first pipe 631 can form the appearance of one side of the pipe 630 and extend from the first bushing 610 toward the second bushing 620.

[0132] The first pipe 631 according to the present embodiment can have the shape of a pipe that is hollow inside and open on both sides. The first pipe 631 can be disposed such that its longitudinal direction is parallel to the first direction. One end of the first pipe 631 can be fixed to the inner surface of the first bushing 610. The other end of the first pipe 631 can be spaced apart from the inner surface of the second bushing 620 by a predetermined distance.

[0133] The second pipe 632 can form the appearance of the other side of the pipe 630 and extend from the second bushing 620 toward the first bushing 610.

[0134] According to this embodiment, the second conduit 632 may have the shape of a hollow tube with openings on both sides. The second conduit 632 may be configured such that its longitudinal direction is parallel to the first direction. One end of the second conduit 632 may be fixed to the inner surface of the second bushing 620. The other end of the second conduit 632 may be spaced at a predetermined distance from the inner surface of the first bushing 610.

[0135] The second pipe 632 can be connected to the first pipe 631 to reciprocate in a direction parallel to the first direction. Therefore, by the relative movement of the first pipe 631 and the second pipe 632, the distance between the first bushing 610 and the second bushing 620 can be changed.

[0136] For example, a first conduit 631 can be inserted into a second conduit 632. Threads can be formed on the outer peripheral surface of the first conduit 631 and the inner peripheral surface of the second conduit 632, and the inner peripheral surface of the second conduit 632 can be threadedly coupled to the outer peripheral surface of the first conduit 631. However, the first conduit 631 and the second conduit 632 are not limited to this, and the inner peripheral surface of the first conduit 631 can be threadedly coupled to the outer peripheral surface of the second conduit 632.

[0137] With the second pipe 632 threadedly coupled to the first pipe 631, the second pipe 632 can rotate clockwise or counterclockwise about a first direction. In this case, the second pipe 632 can be directly and rotatably connected to the second bushing 620. However, when the second pipe 632 is integrally connected to the second bushing 620 and rotates with the second bushing 620 not inserted into the second insertion hole 510, the second pipe 632 can also rotate together with the second bushing 620 about the first direction.

[0138] Depending on the direction of rotation, the second pipe 632 can reciprocate along the first pipe 631 in a direction parallel to the first direction, and change the distance between the first bushing 610 and the second bushing 620.

[0139] More specifically, such as Figure 11 As shown, when the second pipe 632 rotates around the first direction in either a clockwise or counterclockwise direction, the second pipe 632 moves toward the first bushing 610 in a direction opposite to the first direction, so that the distance between the first bushing 610 and the second bushing 620 can be reduced.

[0140] Therefore, when concerned that the first support member 400 and the second support member 500 may interfere with adjacent components, the user can ensure packaging space by reducing the distance between the first bushing 610 and the second bushing 620.

[0141] like Figure 10As shown, when the second pipe 632 rotates in the other one of the clockwise direction and the counterclockwise direction about the first direction, the second pipe 632 moves in the first direction, so that the distance between the first bush 610 and the second bush 620 can increase.

[0142] Therefore, when it is expected that the load applied from the road surface will increase according to the running condition of the vehicle, the user can increase the distance between the first bush 610 and the second bush 620, thereby increasing the magnitude of the reaction torque generated by the first bush 610 and the second bush 620 and reducing the magnitude of the load applied to the first bush 610 and the second bush 620.

[0143] The above has described an example in which the second pipe 632 is rotatably connected to the first pipe 631. However, the present disclosure is not limited thereto, and the first pipe 631 can also be rotatably connected to the second pipe 632.

[0144] A suspension device according to still another embodiment of the present disclosure is described below.

[0145] Figure 12 is a diagram schematically illustrating a mounted state of a suspension device according to still another embodiment of the present disclosure. Figure 13 is a perspective view of a suspension device according to still another embodiment of the present disclosure, as viewed from a first perspective. Figure 14 is a perspective view of a suspension device according to still another embodiment of the present disclosure, as viewed from a second perspective. Figure 15 is an exploded perspective view of a suspension device according to still another embodiment of the present disclosure, as viewed from a second perspective.

[0146] With reference to Figures 12 to 15 , the suspension device can include a bracket 100, a spring 200, a torsion beam shaft 300, a bracket support member 140, and a connection member 150. The suspension device can also include a shock absorber 700 and a link arm 800.

[0147] The vehicle body V to be described below can refer to various structures forming a structural frame of a vehicle, such as a frame body, a sub frame, and a vehicle body shell. One example is described below, in which a longitudinal direction of the vehicle body V refers to a direction based on Figure 12 parallel to a running direction of the wheel W, and a width direction of the vehicle body V refers to a direction based on Figure 12 parallel to a center axis of the two wheels W.

[0148] The wheel W to be described below can refer to a rear wheel of a vehicle. The center axis of the wheel W can be disposed parallel to the width direction of the vehicle body V.

[0149] The bracket 100 can be connected to a wheel W rotatably mounted at a lower side of a vehicle body V. The bracket 100 can serve as a configuration to provide mechanical connection of various suspension components (e.g., a spring 200 and a torsion beam axle 300 to be described below) between the vehicle body V and the wheel W.

[0150] The bracket 100 can be provided in pairs. A pair of brackets 100 can be connected to a pair of wheels W disposed opposite each other in a width direction of the vehicle body V.

[0151] The bracket 100 can include a first bracket body 110 and a second bracket body 120.

[0152] The first bracket body 110 can form an outer appearance of one side of the bracket 100, and can rotatably support the wheel W. The first bracket body 110 can be disposed to face the wheel W in the width direction of the vehicle body V. The first bracket body 110 can be spaced apart from an inner surface of the wheel W by a predetermined distance in the width direction of the vehicle body V. The inner surface of the wheel W can refer to surfaces of a pair of wheels W spaced apart in the width direction of the vehicle body V and facing each other.

[0153] The first bracket body 110 can be connected to the wheel W through a wheel bearing. The first bracket body 110 can rotatably support the wheel W about a center axis C of the wheel W. The specific shape of the first bracket body 110 is not limited to the shape shown in Figures 12 to 15

[0154] The bracket 100 can include a first bracket body hole 111, which is a hole provided to penetrate the first bracket body 110. A connection member 150 to be described below can be disposed in the first bracket body hole 111, and the bracket 100 and a bracket support member 140 can be connected through the connection member 150. A bushing can be disposed inside the first bracket body hole 111.

[0155] The second bracket body 120 forms an outer appearance of the other side of the bracket 100, and can support the spring 200 to be described below. The second bracket body 120 can extend from the first bracket body 110. According to another embodiment, the second bracket body 120 can extend to protrude from the first bracket body 110. One example is described below in which the direction in which the second bracket body 120 protrudes from the first bracket body 110 is a direction parallel to the width direction of the vehicle body V, i.e., a direction from the first bracket body 110 toward the center of the vehicle body V. However, the protruding direction of the second bracket body 120 is not limited thereto, and can also be a direction inclined at a predetermined angle with respect to the width direction of the vehicle body V. The specific shape of the second bracket body 120 is not limited to the shape shown in Figures 13 to 15

[0156] ​​The second bracket body 120 can include a seat groove 121 in which a spring 200 to be described below is seated. An elastic force generated in the spring 200 supporting the vehicle body V can be transmitted to the ground through the second bracket body 120, the first bracket body 110, and the wheel W.

[0157] The seat groove 121 can be formed in a shape of a groove recessed downward from an upper surface of the second bracket body 120. The seat groove 121 can be provided at an end of the second bracket body 120. The seat groove 121 can have a cross section in a shape of a circle.

[0158] A spring fixing member 1211 can be provided in the seat groove 121. The spring fixing member 1211 can be fixed to the seat groove 121. A portion of the spring fixing member 1211 can be inserted into the spring 200 to substantially prevent the spring 200 from being detached from the bracket 100.

[0159] A bracket link arm connecting member 122 can be provided in the second bracket body 120. The bracket 100 and the link arm 800 can be connected through the bracket link arm connecting member 122. The bracket 100 and the link arm 800 can be screwed together. According to still another embodiment, a bolt passing through the bracket link arm connecting member 122 and the link arm 800 can be provided to connect the bracket 100 and the link arm 800.

[0160] A bracket damper connecting member 123 can be provided on the second bracket body 120. The bracket 100 and the damper 700 can be connected through the bracket damper connecting member 123. The bracket 100 and the damper 700 can be screwed together. According to still another embodiment, a bolt passing through the bracket damper connecting member 123 and the damper 700 can be provided to connect the bracket 100 and the damper 700.

[0161] The spring 200 can be provided between the bracket 100 and the vehicle body V. The spring 200 can be elastically deformed. The spring 200 can function as a configuration that generates a load in a direction opposite to a movement of the wheel W by elastic deformation when the wheel W jounces, thereby maintaining a landing state of the wheel W and absorbing an impact input from a road surface.

[0162] The spring 200 can be formed in a shape of a helical spring that is extendable and retractable in a longitudinal direction. A lower portion of the spring 200 can be inserted into the seat groove 121 and fixed to a bottom surface of the seat groove 121.

[0163] An upper portion of the spring 200 can be fixed to the vehicle body V. The longitudinal direction of the spring 200 can be perpendicular to the ground. However, the spring 200 is not limited thereto, but can also be inclined at a predetermined angle with respect to the ground within a range in which a downward elastic restoring force can be generated when the wheel W jounces.

[0164] The spring 200 can be substantially prevented from being detached from the bracket 100 by the spring fixing member 1211 inserted inside the spring 200.

[0165] The torsion beam axle 300 can be spaced apart from the bracket 100 and can be connected to the vehicle body V. The torsion beam axle 300 can be connected to the bracket 100 through the first bracket body 110, the bracket support member 140, and the connection member 150 to be described below.

[0166] The torsion beam axle 300 can include a torsion bar 310 and a rear control arm 320.

[0167] The torsion bar 310 forms the outer appearance of the central portion of the torsion beam axle 300 and can be disposed spaced apart from the bracket 100. The torsion bar 310 can serve as a configuration that absorbs deformation of the vehicle body V occurring during driving of the vehicle by its own torsional deformation and increases roll stiffness when the vehicle turns, thereby securing turning stability.

[0168] The torsion bar 310 can be formed in a shape having a bar disposed in parallel with the width direction of the vehicle body V. The length of the torsion bar 310 can be smaller than the gap between the pair of wheels W.

[0169] The torsion bar 310 can be disposed behind the center axis C of the wheel W. That is, the torsion bar 310 can be disposed at a position spaced apart by a predetermined distance from the center axis C of the wheel W in the longitudinal direction of the vehicle body V. Accordingly, the torsion bar 310 can further improve the packaging efficiency of the battery (not shown) by expanding the space for installing the battery under the vehicle body V. The specific shape of the torsion bar 310 is not limited to the shape shown in Figures 12 to 15 FIG. 3, and the torsion bar 310 can be designed to have various shapes.

[0170] The rear control arm 320 can be connected to the torsion bar 310 and can support the torsion bar 310 with respect to the vehicle body V. The rear control arm 320 can be connected to the end of the torsion bar 310. The rear control arm 320 can be fixed to the end of the torsion bar 310 by various types of coupling methods such as welding and screwing. The end of the rear control arm 320 can extend rearward from the torsion bar 310 and be connected to the vehicle body V.

[0171] The end of the rear control arm 320 can be rotatably connected to the vehicle body V to absorb displacement occurring when the wheel W jounces or rebounds. For example, the end of the rear control arm 320 can be rotatably connected to the vehicle body V through a bushing, a bearing, a ball joint, or the like.

[0172] The rear control arm hole 321 can be provided as a hole passing through the end of the rear control arm 320. The rear control arm bushing 322 can be disposed within the rear control arm hole 321. When a bolt is inserted into the rear control arm bushing 322 and connected to the vehicle body V, the end of the rear control arm 320 can be fixed to the vehicle body V.

[0173] The rear control arm 320 can be provided in pairs. The pair of rear control arms 320 can be spaced apart from each other in the width direction of the vehicle body V. The pair of rear control arms 320 can be connected to both ends of the torsion bar 310, respectively.

[0174] The first bracket body 110 can extend from the bracket 100. The first bracket body 110 can serve as a configuration that provides a connection structure between the connection member 150 to be described below and the bracket 100.

[0175] The first bracket body 110 can be formed in a shape of a cantilever extending upward from the bracket 100. The first bracket body 110 can be disposed between the wheel W and the spring 200.

[0176] The bracket support member 140 can extend from the torsion beam shaft 300 and can be disposed to face the first bracket body 110. The bracket support member 140 can serve as a configuration that provides a connection structure between the connection member 150 to be described below and the torsion beam shaft 300.

[0177] The bracket support member 140 can include a first bracket support member 1410 and a second bracket support member 1420 extending from the rear control arm 320.

[0178] Each of the first bracket support member 1410 and the second bracket support member 1420 can be formed in a shape of a cantilever extending from the rear control arm 320. Accordingly, the first bracket support member 1410 and the second bracket support member 1420 can be spaced apart from each other. The first bracket body 110 can be disposed between the first bracket support member 1410 and the second bracket support member 1420. The first bracket support member 1410, the second bracket support member 1420, and the first bracket body 110 can be connected to each other by the connection member 150.

[0179] The first bracket body 110 and the bracket support member 140 can be spaced apart from each other by a predetermined distance in a direction. The bracket support member 140 can be disposed between the wheel W and the spring 200, and more particularly, between the first bracket body 110 and the spring 200.

[0180] The connection member 150 can be disposed between the first bracket body 110 and the bracket support member 140. The connection member 150 can serve as a configuration that connects the first bracket body 110 and the bracket support member 140 to each other and cancels a moment that is generated between the first bracket body 110 and the bracket support member 140 when the wheel W jounces.

[0181] The first bracket support member 1410 can include a first bracket hole 1411 in which a first bracket bushing 1412 is disposed. The second bracket support member 1420 can include a second bracket hole 1421 in which a second bracket bushing 1422 is disposed. A central axis of the first bracket hole 1411 can be disposed coaxially with a central axis of the second bracket hole 1421.

[0182] The suspension apparatus can further include a shock absorber 700 and a link arm 800.

[0183] The damper 700 can be connected to the bracket 100 to attenuate the magnitude of the vibration or impact transmitted from the road surface to the wheel W. The damper 700 according to the present embodiment can be various types of dampers 700 filled with gas, oil, etc. and capable of generating a damping force through expansion motion, as an example. The lower portion of the damper 700 can be connected to the first bracket body 110 or the second bracket body 120 through a ball joint, a bushing, etc. According to still another embodiment, the lower portion of the damper 700 can be connected to the second bracket body 120. The upper portion of the damper 700 can be connected to the vehicle body V through a ball joint, a bushing, etc.

[0184] The link arm 800 can be connected to the bracket 100 and can support the bracket 100 with respect to the vehicle body V. The link arm 800 can serve as a configuration to provide an additional support force to the bracket 100 independently of the rear control arm 320.

[0185] The link arm 800 can be formed in a shape having various types of suspension links. The lower portion of the link arm 800 can be connected to the first bracket body 110 or the second bracket body 120 through a ball joint, a bushing, etc. The upper portion of the link arm 800 can be connected to the vehicle body V through a ball joint, a bushing, etc. The upper portion of the link arm 800 can be located in front of the central axis of the wheel W. That is, the rear control arm 320 and the link arm 800 can be spaced apart forward and backward along the longitudinal direction of the vehicle body V based on the central axis of the wheel W.

[0186] The link arm 800 can limit the path of movement of the bracket 100. Also, the torsion beam axle 300 can limit the path of movement of the bracket 100. In this way, the path of movement of the bracket 100 can be limited by the torsion beam axle 300 and the link arm 800, and the bracket 100 can be supported by the vehicle body V via the torsion beam axle 300 and / or the link arm 800.

[0187] The shock transmitted to the bracket 100 can be reduced by the damper 700.

[0188] Figure 16 FIG. 7 is a diagram schematically illustrating an operation process of a suspension device according to still another embodiment of the present disclosure. Figure 17 FIG. 8 is a front view of a first bracket body and a bracket support member of a suspension device according to still another embodiment of the present disclosure. Figure 18 FIG. 9 is an exploded front view of a first bracket body and a bracket support member of a suspension device according to still another embodiment of the present disclosure. Figure 19 and Figure 20 FIG. 10 is a diagram schematically illustrating an operation process of a first bracket body and a bracket support member of a suspension device according to still another embodiment of the present disclosure.

[0189] Referring to Figures 16 to 20When the vehicle is running, a load from the road surface can be applied to the wheel W and the first bracket body 110 due to unevenness of the road surface, etc.

[0190] Due to such a load, the spring 200 can be compressed in the longitudinal direction, and can apply an elastic force to the second bracket body 120 in a direction toward the road surface.

[0191] When the load applied to the first bracket body 110 through the wheel W and the load applied to the second bracket body 120 through the spring 200 act in opposite directions, a rotational force is generated in the bracket 100, which is centered in a direction intersecting the first direction.

[0192] When such a rotational force is transmitted to the connector 1510 through the first bracket support member 1410 and the second bracket support member 1420, and when the first bracket support member 1410, the second bracket support member 1420, and the first bracket body 110 are integrally connected to the connector 1510, a moment of force that rotates with respect to the first bracket support member 1410 and the second bracket support member 1420 is generated in the first bracket body 110.

[0193] Referring to Figure 19 , the first bracket bushing 1412 and the second bracket bushing 1422 are elastically deformed by the moment of force applied by the connector 1510. More specifically, the first bracket bushing 1412 applies a load downward toward the road surface to the first bracket support member 1410, and the second bracket bushing 1422 applies a load upward from the road surface to the second bracket support member 1420.

[0194] Referring to Figure 20 , the first bracket bushing 1412 and the second bracket bushing 1422 are elastically deformed by the moment of force applied by the connector 1510. More specifically, the first bracket bushing 1412 applies a load upward from the road surface to the first bracket support member 1410, and the second bracket bushing 1422 applies a load downward toward the road surface to the second bracket support member 1420.

[0195] Due to the elastic loads of the first bracket bushing 1412 and the second bracket bushing 1422, a counteracting moment of force for canceling the moment of force generated by the wheel W and the spring 200 is generated in the first bracket body 110, and rotation of the bracket 100 can be substantially prevented.

[0196] The connection member 150 can include the connector 1510 and a presser 1520.

[0197] The connector 1510 can pass through the first bracket body 110. According to still another embodiment, the connector 1510 can pass through the first bracket body hole 111 provided in the first bracket body 110. According to still another embodiment, the connector 1510 can pass through a bushing provided inside the first bracket body hole 111.

[0198] The connector 1510 can pass through the first bracket support member 1410 and the second bracket support member 1420. According to still another embodiment, the connector 1510 can pass through the first bracket support member 1410, the first bracket body 110, and the second bracket support member 1420. The connector 1510 can pass through a first bracket bushing 1412 provided in a first bracket hole 1411 of the first bracket support member 1410, a second bracket bushing 1422 provided in a second bracket hole 1421 of the second bracket support member 1420, and a bushing provided in the first bracket body hole 111 of the first bracket body 110.

[0199] An end of the connector 1510 can be coupled to a compression member 1520. The compression member 1520 can be coupled to one end of the connector 1510 and moved toward the other end of the connector 1510. According to still another embodiment, the connector 1510 and the compression member 1520 can be provided with a bolt and a nut.

[0200] When the connector 1510 passes through the first bracket support member 1410, the first bracket body 110, and the second bracket support member 1420 and is fastened to the compression member 1520, the first bracket body 110 compresses the first bracket support member 1410 and the second bracket support member 1420 can be compressed toward the first bracket body 110 by the connector 150.

[0201] The first bracket bushing 1412, the second bracket bushing 1422, and the bushing inside the first bracket body hole 111 can be elastically deformed. The first bracket bushing 1412, the second bracket bushing 1422, and the bushing inside the first bracket body hole 111 can be elastically deformed when the wheel W jolts and can generate a reaction force that offsets a load applied to the bracket 100 from the wheel W.

[0202] The connector 1510 can function as a torque arm that induces elastic deformation of the first bracket bushing 1412 and the second bracket bushing 1422 by transmitting a rotational force generated in the bracket 100 when the wheel W jolts to the first bracket bushing 1412 and the second bracket bushing 1422 and transmitting a reaction torque generated from the first bracket bushing 1412 and the second bracket bushing 1422 to the bracket 100.

[0203] A longitudinal direction of the connector 1510 can be set to be parallel to a direction in which the second bracket 120 protrudes. Accordingly, when the wheel W jolts, the connector 1510 can induce a reaction moment generated by elastic deformation of the first bracket bushing 1412 and the second bracket bushing 1422 to act in a direction in which the reaction moment cancels a moment generated by the wheel W and the spring 200 in the bracket 100.

[0204] Since the first bracket body 110 is disposed between the first bracket bushing 1412 and the second bracket bushing 1422, a magnitude of a load applied to the first bracket bushing 1412 and the second bracket bushing 1422 when the wheel W jolts can be reduced, and durability of the assembly can be improved.

[0205] Since the first bracket bushing 1412 and the second bracket bushing 1422 are connected to each other by the connector 1510 that is separate from the first bracket body 110, thicknesses of the first bracket body 110, the first bracket support member 1410, and the second bracket support member 1420 can be reduced, and thus a total weight of a product can be reduced, and space utilization can be improved.

[0206] A gap between the first bracket bushing 1412 and the second bracket bushing 1422 can be increased compared to when the first bracket body 110 is connected to a bracket. According to still another embodiment, since the first bracket body 110 is disposed between the first bracket bushing 1412 and the second bracket bushing 1422, a moment length L between the first action point P1 of the first bracket bushing 1412 and the second action point P2 of the second bracket bushing 1422 can be increased. As the moment length L increases, a magnitude of a reaction force generated at the first action point P1 and the second action point P2 can be reduced.

[0207] As the moment length L between the first action point P1 of the first bracket bushing 1412 and the second action point P2 of the second bracket bushing 1422 increases and the magnitude of the reaction force generated at the first action point P1 and the second action point P2 is reduced, durability of the first bracket bushing 1412 and the second bracket bushing 1422 can be improved.

[0208] In addition, since the first bracket bushing 1412 and the second bracket bushing 1422 are disposed on the first bracket support member 1410 and the second bracket support member 1420, rather than on the first bracket body 110, a volume of the first bracket body 110 can be reduced.

[0209] Further, since the first bracket bush 1412 and the second bracket bush 1422 are provided on the first bracket support member 1410 and the second bracket support member 1420, a bushing pipe for accommodating the first bracket bush 1412 and the second bracket bush 1422 can be welded to the first bracket support member 1410 and the second bracket support member 1420, thereby improving formability of the first bracket support member 1410 and the second bracket support member 1420.

[0210] Further, since the first bracket support member 1410 and the second bracket support member 1420 are reduced in volume, weight of the bracket 100 can be reduced and costs can be lowered.

[0211] Referring to Figure 19 When the bracket 100 rotates clockwise, the connector 1510 connected to the first bracket body 110 of the bracket 100 also rotates clockwise, and reaction forces can be generated on the first bracket bush 1412 and the second bracket bush 1422 connected to the connector 1510.

[0212] The first bracket bush 1412 generates a reaction force in a direction toward the ground, and the second bracket bush 1422 generates a reaction force in a direction away from the ground. Accordingly, a moment acting on the connector 1510 can be canceled.

[0213] Referring to Figure 20 When the bracket 100 rotates counterclockwise, the connector 1510 connected to the first bracket body 110 of the bracket 100 also rotates counterclockwise, and reaction forces can be generated on the first bracket bush 1412 and the second bracket bush 1422 connected to the connector 1510.

[0214] The first bracket bush 1412 generates a reaction force in a direction away from the ground, and the second bracket bush 1422 generates a reaction force in a direction toward the ground. Accordingly, a moment acting on the connector 1510 can be canceled.

[0215] Although exemplary embodiments of the present disclosure have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the present disclosure defined in the technical scheme.

Claims

1. A suspension device, characterized in that, include: Bracket, which is connected to the wheel; A spring is disposed between the bracket and the vehicle body; A torsion beam shaft, which is spaced apart from the bracket and connected to the vehicle body; A first support member extends from the bracket; A second support member extends from the axis of the torsion beam and is configured to face the first support member; as well as A connecting member is disposed between the first support member and the second support member and connects the first support member and the second support member to each other.

2. The suspension device according to claim 1, characterized in that, The bracket includes: A first bracket body, configured to face the wheel and rotatably support the wheel; and The second bracket body extends from the first bracket body along a first direction and supports the spring.

3. The suspension device according to claim 2, characterized in that, The torsion beam shaft includes: A torsion bar, configured to be parallel to the width direction of the vehicle body; and A rear control arm, which is connected to the torsion bar and supports the torsion bar relative to the vehicle body.

4. The suspension device according to claim 3, characterized in that, The torsion bar is located behind the central axis of the wheel.

5. The suspension device according to claim 2, characterized in that, The connecting component includes: A first bushing is connected to the first support member; A second bushing, connected to the second support member and configured to face the first bushing; and A pipe is disposed between the first bushing and the second bushing and includes two ends respectively connected to the first bushing and the second bushing.

6. The suspension device according to claim 5, characterized in that, The first bushing and the second bushing are capable of elastic deformation.

7. The suspension device according to claim 6, characterized in that, The pipe is configured to be parallel to the first direction.

8. The suspension device according to claim 7, characterized in that, The pipeline includes: A first conduit extending from the first bushing; and A second conduit extends from the second bushing and connects to the first conduit so as to be reciprocating in a direction parallel to the first direction.

9. The suspension device according to claim 8, characterized in that, The second pipe is rotatably connected to the first pipe about the first direction, and reciprocates along a direction parallel to the first direction according to the direction of rotation.

10. The suspension device according to claim 5, characterized in that, The connecting member further includes: A fastening rod configured to pass through the first bushing, the pipe, and the second bushing; A first clamping element, connected to one end of the fastening rod, presses the first bushing against the second bushing; and A second clamping element is connected to the other end of the fastening rod and presses the second bushing against the first bushing.

11. A suspension device, characterized in that, include: Bracket, which is connected to the wheel; A spring is disposed between the bracket and the vehicle body; A torsion beam shaft, which is spaced apart from the bracket and connected to the vehicle body; A bracket support member extends from the torsion beam axis and includes a first bracket support member and a second bracket support member spaced apart from the first bracket support member; as well as A connecting component configured to connect the bracket, the first bracket support member, and the second bracket support member to each other.

12. The suspension device according to claim 11, characterized in that, The bracket includes: The first bracket body is connected to the wheel; and The second bracket body extends from the first bracket body and supports the spring.

13. The suspension device according to claim 12, characterized in that, The torsion beam shaft includes: A torsion bar, configured to be parallel to the width direction of the vehicle body; and A rear control arm, which is connected to the torsion bar and supports the torsion bar relative to the vehicle body.

14. The suspension device according to claim 13, characterized in that, The torsion bar is located behind the central axis of the wheel.

15. The suspension device according to claim 12, characterized in that, The bracket support component includes: A first bracket hole is configured to pass through the first bracket support member; The first bracket bushing is disposed in the first bracket hole; A second bracket hole is configured to pass through the second bracket support member; and The second bracket bushing is disposed in the second bracket hole.

16. The suspension device according to claim 15, characterized in that, The first bracket body is disposed between the first bracket bushing and the second bracket bushing.

17. The suspension device according to claim 16, characterized in that, The connecting component includes: A connector configured to interconnect the first bracket bushing, the second bracket bushing, and the first bracket body; and A clamping element, which is fastened to the connector and configured to press the first bracket bushing and the second bracket bushing against the first bracket body.

18. The suspension device according to claim 15, characterized in that, The first bracket bushing and the second bracket bushing are capable of elastic deformation.

19. The suspension device according to claim 12, characterized in that, The bracket includes: A bracket shock absorber connecting component, which is disposed on the second bracket body; and The suspension device also includes: A shock absorber, which is connected to the bracket shock absorber connecting member and the vehicle body, to attenuate the impact transmitted from the wheels.

20. The suspension device according to claim 12, characterized in that, The bracket includes: A bracket linkage arm connecting member, which is disposed on the second bracket body; and The suspension device also includes: A linkage arm, which is connected to the bracket linkage arm connecting member and the vehicle body, to limit the movement path of the bracket.

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