Rear suspension lower spring cushion, rear suspension swing arm assembly and automobile

Abstract

The rear suspension lower spring cushion comprises a cushion body, a boss is arranged in the middle of the cushion body, an anti-disengagement flange extending outwards in the radial direction is arranged on part of the outer circumferential face of the top of the boss, and the anti-disengagement flange is arranged on the outer circumferential face of the top of the boss. A circumferential clamping groove for a rear suspension spring to be clamped around the boss is formed between the anti-disengaging flange and the cushion body, and a radial limiting block is arranged on the radial outer side of the circumferential clamping groove and connected between the anti-disengaging flange and the cushion body. According to the technical scheme, the anti-disengagement flange extending outwards in the radial direction is arranged on the partial peripheral face of the top of the boss of the rear suspension lower spring cushion, when a rear suspension spring is installed, the lower end of the rear suspension lower spring cushion is installed on the boss of the cushion body in a sleeved mode and then clamped into the circumferential clamping groove around the boss, and the spring body is restrained and limited through the anti-disengagement flange and the radial limiting block. And the rear suspension spring is effectively prevented from falling off from the rear suspension lower spring cushion.

Description

Technical Field

[0001] This utility model is applicable to the automotive field, and in particular relates to a rear suspension lower spring pad, a rear suspension control arm assembly, and an automobile. Background Technology

[0002] In recent years, with the widespread adoption of electric vehicles, consumers have increasingly higher demands for overall vehicle driving experience and safety performance. The rear suspension control arm is a key component of the suspension system, connected to the steering knuckle and subframe via the suspension bushing. The rear suspension control arm provides mounting support for various suspension components while transmitting vertical, longitudinal, and lateral forces from the road surface.

[0003] In existing technologies, multi-link swing arms are usually based on simple two-force members to achieve simple force transmission.

[0004] The rear suspension springs are mounted on the rear suspension control arms via lower spring pads. These lower spring pads are usually installed on the rear suspension control arms by the supplier (or torsion beam for non-independent suspensions) before being delivered to the OEM. Existing lower spring pads have poor stability during transportation and often fall off.

[0005] In summary, the problems existing in the relevant technologies urgently need to be solved. Utility Model Content

[0006] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a rear suspension lower spring pad, a rear suspension control arm assembly, and an automobile.

[0007] The technical solution adopted by this utility model to solve its technical problem is:

[0008] In a first aspect, a rear suspension lower spring pad includes a pad body, a boss is provided in the middle of the pad body, and a radially outwardly extending anti-slip flange is provided on the outer peripheral surface of a portion of the top of the boss. A circumferential groove is formed between the anti-slip flange and the pad body for the rear suspension spring to engage around the boss. A radial limiting block is provided on the radially outer side of the circumferential groove, and the radial limiting block is connected between the anti-slip flange and the pad body.

[0009] In conjunction with the first aspect, in some implementations of the first aspect, along the direction in which the suspension spring engages around the boss, a circumferential limiting block is provided at the end of the circumferential groove, and the circumferential limiting block is connected between the anti-detachment flange and the pad body.

[0010] In combination with the first aspect and the above-described implementations, in some implementations of the first aspect, the outer wall surface of the boss is an inclined conical surface.

[0011] In combination with the first aspect and the above-described implementation methods, in some implementation methods of the first aspect, the boss has a through hole in the middle.

[0012] In combination with the first aspect and the above-mentioned implementation methods, in some implementation methods of the first aspect, the bottom of the rear suspension lower spring pad is provided with a plurality of protruding positioning pins, the root of the positioning pin is provided with a limiting groove, and the end of the positioning pin is provided with a guide cone surface.

[0013] In combination with the first aspect and the above-described implementations, in some implementations of the first aspect, the positioning pin includes a first positioning pin and a second positioning pin, wherein the first positioning pin and the second positioning pin are respectively located on different circumferences with the center of the through hole as the center.

[0014] In combination with the first aspect and the above-described implementation, in some implementations of the first aspect, the bottom of the rear suspension lower spring pad is provided with a positioning groove extending into the boss at the position corresponding to the boss.

[0015] In a second aspect, a rear suspension control arm assembly includes a rear suspension lower control arm, a rear suspension spring, and a rear suspension lower spring pad as described in any implementation of the first aspect, wherein the pad is mounted on the rear suspension lower control arm, and the end of the rear suspension spring is engaged in the circumferential groove around the boss.

[0016] In conjunction with the second aspect, in some implementations of the second aspect, including the rear suspension lower spring pad described in some implementations of the first aspect, the rear suspension lower control arm includes a lower control arm body and a spring mounting plate. The lower control arm body is formed by stamping sheet metal and has a U-shaped groove extending along its length. The top edge of the U-shaped groove is provided with an outwardly folded edge. The spring mounting plate is mounted and welded to the folded edge. The spring mounting plate is provided with a positioning pin hole and an upwardly extending convex ring. The positioning pin is mounted in the positioning pin hole, and the convex ring is embedded in the positioning slot.

[0017] In a second aspect, an automobile includes a rear suspension control arm assembly as described in any implementation of the second aspect.

[0018] One of the above technical solutions has at least one of the following advantages or beneficial effects: In the technical solution of this utility model, the outer peripheral surface of the rear suspension lower spring pad at the top of the boss is provided with an anti-slip flange extending radially outward. When the rear suspension spring is installed, the lower end is fitted onto the boss of the pad body, and then it is inserted into the circumferential groove around the boss. The spring body is constrained and limited by the anti-slip flange and the radial limiting block, effectively preventing the rear suspension spring from falling off the rear suspension lower spring pad.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0021] Figure 1 This is a schematic diagram of the top structure of one embodiment of the rear suspension lower spring pad of this utility model;

[0022] Figure 2 This is a schematic diagram of the bottom structure of an embodiment of the rear suspension lower spring pad of this utility model;

[0023] Figure 3 This is a top view of an embodiment of the rear suspension lower spring pad of this utility model;

[0024] Figure 4 This is a top view of an embodiment of the rear suspension lower spring pad of this utility model, installed on the spring mounting plate;

[0025] Figure 5 yes Figure 4 Cross-sectional view at point AA;

[0026] Figure 6 This is a schematic diagram of an embodiment of the present invention, including the rear suspension lower spring pad, spring mounting plate, and the structure after the rear suspension spring is installed;

[0027] Figure 7 This is a top structural schematic diagram of an embodiment of the rear suspension swing arm assembly of this utility model. Detailed Implementation

[0028] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0029] In this utility model, when directions (up, down, left, right, front, and back) are described, it is only for the convenience of describing the technical solution of this utility model, and does not indicate or imply that the technical features referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0030] In this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," "exceeding," etc. are understood to exclude the stated number; "above," "below," "within," etc. are understood to include the stated number. In the description of this utility model, if "first" or "second" is used, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0031] In this utility model, unless otherwise explicitly defined, terms such as "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; a fixed connection, a detachable connection, or an integrally formed connection; a mechanical connection, an electrical connection, or a connection capable of mutual communication; or the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model based on the specific content of the technical solution.

[0032] in, Figure 1 and Figure 6 The reference direction coordinate system of this utility model embodiment is given below, in conjunction with Figure 1 and Figure 6 The embodiments of this utility model will be described in the directions shown.

[0033] See Figure 1 , Figure 2 This utility model provides a rear suspension lower spring pad 100, which can be made of materials such as rubber. The rear suspension lower spring pad 100 includes a pad body 101, which is sheet-shaped and has a certain thickness. The pad body 101 is used to pad between the rear suspension spring 200 and the rear suspension lower control arm 300. A boss 102 is provided in the middle of the pad body 101. A portion of the outer peripheral surface of the top of the boss 102 is provided with an anti-slip flange 103 extending radially outward. A circumferential groove 104 is formed between the anti-slip flange 103 and the pad body 101 for the rear suspension spring to be inserted around the boss 102. A radial limiting block 105 is provided on the radial outer side of the circumferential groove 104. The radial limiting block 105 is connected between the anti-slip flange 103 and the pad body 101.

[0034] Combination Figure 1 , Figure 2 , Figure 6In the technical solution of this utility model, the rear suspension lower spring pad 100 has a radially outwardly extending anti-detachment flange 103 on the outer peripheral surface of the top part of the boss 102. When the rear suspension spring is installed, the lower end is fitted onto the boss 102 of the pad body 101, and then it is inserted into the circumferential groove 104 around the boss 102. The spring body is constrained and limited by the anti-detachment flange 103 and the radial limiting block 105, which effectively prevents the rear suspension spring from falling off the rear suspension lower spring pad 100.

[0035] In some embodiments, see Figure 1 Along the direction in which the suspension spring engages with the boss 102, a circumferential limiting block 106 is provided at the end of the circumferential groove 104. The circumferential limiting block 106 is connected between the anti-slip flange 103 and the pad 101. When the rear suspension spring 200 is installed, its lower end is fitted onto the boss 102 of the pad 101, and then engages with the circumferential groove 104 around the boss 102 until the end abuts against the circumferential limiting block 106. The spring body is constrained and limited by the anti-slip flange 103, the radial limiting block 105, and the circumferential limiting block 106, effectively preventing the rear suspension spring 200 from falling off the lower spring pad 100 of the rear suspension.

[0036] In some embodiments, see Figure 1 The outer wall surface of the boss 102 is an inclined conical surface to facilitate the assembly of the rear suspension spring 200 onto the outer side of the boss 102.

[0037] In some embodiments, see Figure 1 , Figure 2 The boss 102 is the thickest area of ​​the entire rear suspension lower spring pad 100. The boss 102 has a through hole 107 in the middle, which can effectively reduce the weight and material usage of the entire rear suspension lower spring pad 100.

[0038] The lower spring pad 100 of the rear suspension can be installed on the lower control arm 300 of the rear suspension using fasteners such as bolts.

[0039] In some embodiments, see Figure 1 , Figure 2 , Figure 4 and Figure 5 The bottom of the rear suspension lower spring pad 100 is provided with multiple protruding positioning pins, the root of the positioning pin is provided with a limiting groove 108, and the end of the positioning pin is provided with a guide cone surface. The rear suspension lower spring pad 100 is pressed into the positioning pin hole of the rear suspension lower control arm 300 by the positioning pins, which can prevent it from coming out.

[0040] Further, see Figure 2The positioning pins include a first positioning pin 109 and a second positioning pin 110. The first positioning pin 109 and the second positioning pin 110 are located on different circumferences with the center of the through hole 107 as the center. In other words, the first positioning pin 109 and the second positioning pin 110 are at different distances from the center of the through hole 107, which can play a role in preventing incorrect installation.

[0041] Understandably, the number of locating pins at the bottom of the rear suspension lower spring pad 100 can be increased or decreased. When the number of locating pins is greater than 3, the locating pins can be set on the same distribution circumference.

[0042] In some embodiments, see Figure 5 The bottom of the lower rear suspension spring pad 100 has a positioning groove 111 extending into the boss 102 at the position corresponding to the boss 102. The positioning groove 111 can be assembled and connected with the corresponding convex ring 301 of the lower rear suspension control arm 300, wherein the two can be interference fit. For example, the size A of the positioning groove 111 is 1mm smaller than the thickness B of the convex ring 301, thereby ensuring a tight fit and further preventing detachment.

[0043] See Figure 7 The present invention also provides a rear suspension control arm assembly, including a rear suspension lower control arm 300, a rear suspension spring 200 and a rear suspension lower spring pad 100 in any of the above embodiments. The pad body 101 is installed on the rear suspension lower control arm 300, and the end of the rear suspension spring 200 is engaged in the circumferential groove 104 around the boss 102.

[0044] Further, see Figure 5 , Figure 7 The rear suspension lower control arm 300 includes a lower control arm body 302 and a spring mounting plate 303. The lower control arm body 302 is formed by stamping sheet metal and has a U-shaped groove 304 extending along its length. The top edge of the U-shaped groove 304 has an outwardly folded edge 305. The cross-section of the lower control arm body 302 is U-shaped, which improves space utilization and enhances rigidity and durability. The spring mounting plate 303 is mounted and welded to the folded edge 305. The spring mounting plate 303 and the lower control arm body 302 are attached and welded together. Under stress, it can provide lateral and transverse support, improving strength, rigidity, and durability. The spring mounting plate 303 has a locating pin hole and an upwardly extending protruding ring 301. The locating pin is installed in the locating pin hole, and the protruding ring 301 is embedded in the locating slot 111. In this embodiment, the spring mounting plate 303 and the lower control arm body 302 are welded together on the back side to prevent the weld seam and weld slag from damaging the mounting surface of the rear suspension lower spring pad 100 and to protect the rubber rear suspension lower spring pad 100. The rear suspension lower control arm 300 in this embodiment, through structural optimization, can improve durability while achieving a simple structure, light weight, and optimal cost.

[0045] An embodiment of this utility model also provides an automobile, including the rear suspension control arm assembly of any of the above embodiments.

[0046] In the description of this specification, references to terms such as "example," "embodiment," or "some embodiments" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0047] Of course, the present invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A rear suspension lower spring pad, characterized in that, The device includes a pad body, a boss in the middle of the pad body, and an anti-slip flange extending radially outward on the outer peripheral surface of the top part of the boss body. A circumferential groove is formed between the anti-slip flange and the pad body for the rear suspension spring to engage around the boss body. A radial limiting block is provided on the radial outer side of the circumferential groove, and the radial limiting block is connected between the anti-slip flange and the pad body.

2. The rear suspension lower spring pad according to claim 1, characterized in that, Along the direction in which the suspension spring engages around the boss, a circumferential limiting block is provided at the end of the circumferential groove, and the circumferential limiting block is connected between the anti-detachment flange and the pad body.

3. The rear suspension lower spring pad according to claim 1, characterized in that, The outer wall of the boss is an inclined conical surface.

4. The rear suspension lower spring pad according to claim 1, characterized in that, The boss has a through hole in the middle.

5. The rear suspension lower spring pad according to claim 4, characterized in that, The bottom of the lower spring pad of the rear suspension is provided with multiple protruding positioning pins, the root of the positioning pin is provided with a limiting groove, and the end of the positioning pin is provided with a guide cone surface.

6. The rear suspension lower spring pad according to claim 5, characterized in that, The locating pin includes a first locating pin and a second locating pin, which are respectively located on different circumferences centered on the center of the through hole.

7. The rear suspension lower spring pad according to claim 5, characterized in that, The bottom of the lower spring pad of the rear suspension is provided with a positioning groove extending into the boss at the position corresponding to the boss.

8. A rear suspension control arm assembly, characterized in that, The device includes a rear suspension lower control arm, a rear suspension spring, and a rear suspension lower spring pad according to any one of claims 1 to 7, wherein the pad is mounted on the rear suspension lower control arm, and the end of the rear suspension spring is engaged in the circumferential groove around the boss.

9. The rear suspension control arm assembly according to claim 8, characterized in that, The rear suspension lower spring pad as described in claim 7 is included. The rear suspension lower control arm includes a lower control arm body and a spring mounting plate. The lower control arm body is formed by stamping sheet metal. The lower control arm body has a U-shaped groove extending along the length direction. The top edge of the U-shaped groove is provided with an outwardly folded edge. The spring mounting plate is installed and welded to the folded edge. The spring mounting plate is provided with a positioning pin hole and an upwardly extending convex ring. The positioning pin is installed in the positioning pin hole, and the convex ring is embedded in the positioning slot.

10. A car, characterized in that, Includes the rear suspension control arm assembly as described in claim 8 or 9.

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