Suspension assembly

Abstract

The utility model provides a suspension assembly. The suspension assembly comprises a framework and a lining assembly. A reserved hole is formed in the framework, and the lining assembly is inserted into the reserved hole. The bushing assembly comprises an inner core and an elastic body; the inner core is inserted into the preformed hole, the two ends of the inner core extend to the two sides of the framework from the two ends of the preformed hole respectively, and the extending parts of the inner core are provided with protruding parts; the elastic piece is arranged on the periphery of the inner core in a sleeving mode, and the inner wall of the elastic piece is connected with the inner core and located between the two protruding parts. After the lining assembly is combined, the two ends of the elastic body are connected with the two protruding parts respectively so as to limit movement of the elastic body relative to the inner core, and therefore axial limiting of the inner core is achieved. According to the suspension assembly provided by the invention, the rigidity of the bushing type suspension in the axial direction of the bushing can be improved, so that the bushing type suspension can effectively absorb large impact and load, the use effect of the engine suspension is ensured, and interference between the suspension and peripheral parts is avoided.

Description

Technical Field

[0001] The present application belongs to the technical field of automobile parts, and specifically relates to a suspension assembly. Background Art

[0002] The engine suspension is the bridge connecting the engine and the vehicle body, and has supporting, vibration isolating and limiting functions; the common suspension structure includes a frame with reserved holes, and a bushing inserted into the reserved holes; the bushing includes an inner core, and an elastomer (usually a rubber product) sleeved on the outer periphery of the inner core.

[0003] With the development of the automobile industry, people's requirements for vehicle dynamic performance are constantly increasing, and high-torque powertrains are also being used more and more. When a drive motor with a large peak torque is used, the suspension needs to withstand large and rapidly changing impacts and loads.

[0004] The inventors have discovered that existing suspension parts cannot meet the current high-load conditions. The specific reasons include that the existing bushing-type suspension can only limit the inner core along the radial direction, but cannot limit the inner core along the axial direction. Therefore, relative movement along the axial direction is likely to occur between the inner core and the elastomer, thereby causing deformation of the suspension structure, affecting the use effect of the engine suspension, and even causing relative interference between the suspension and surrounding components, causing damage to the engine suspension or other components. Utility Model Content

[0005] The embodiment of the present application provides a suspension assembly that can improve the stiffness of a bushing-type suspension along the axial direction of the bushing, thereby enabling it to effectively absorb large impacts and loads, ensure the use effect of the engine suspension, and avoid interference between the suspension and surrounding components.

[0006] To achieve the above purpose, the technical solution adopted in this application is:

[0007] A suspension assembly is provided, comprising a frame and a bushing assembly; wherein a reserved hole is provided on the frame, and the bushing assembly is inserted into the reserved hole; the bushing assembly comprises:

[0008] An inner core is inserted into the reserved hole; two ends of the inner core extend from two ends of the reserved hole to two sides of the frame, and the extended parts of the inner core have protrusions extending radially outward; and

[0009] An elastic body, which is sleeved on the outer periphery of the inner core, has an inner wall connected to the inner core, and is located between the two protrusions;

[0010] Wherein, two ends of the elastic body are respectively connected to the two protrusions to limit the movement of the elastic body relative to the inner core.

[0011] In a possible implementation, the elastic body includes:

[0012] A cylinder body is disposed around the inner core; and

[0013] A plurality of connecting parts are distributed in the cylinder at intervals along the circumference of the cylinder, and are all connected to the inner wall of the cylinder;

[0014] Wherein, each of the connecting parts extends toward the central axis of the cylinder; when the inner core is inserted into the cylinder, the extending end of each of the connecting parts abuts against the outer peripheral wall of the inner core.

[0015] In a possible implementation, the extending ends of two adjacent connecting portions along the circumference of the cylinder are connected via an arc-shaped plate;

[0016] Wherein, when the extending end of each of the connecting parts abuts against the outer peripheral wall of the inner core, each of the arc-shaped plates abuts against the outer peripheral wall of the inner core.

[0017] In a possible implementation, the inner wall of the cylinder has a plurality of reinforcement portions spaced apart along the circumference thereof, and each of the reinforcement portions is located between two adjacent connection portions along the circumference of the cylinder.

[0018] In a possible implementation, one end of the cylinder has an abutment portion extending radially inwardly;

[0019] When the inner core is inserted into the cylinder, the protrusion can abut against the abutment portion.

[0020] In a possible implementation, one end of the elastic body is provided with a first flange portion extending radially outward;

[0021] When the bushing assembly is inserted into the reserved hole, the first flange portion abuts against the outer wall of the frame.

[0022] In a possible implementation, there are multiple protrusions on the same side, and the multiple protrusions are arranged around the inner core.

[0023] In a possible implementation, there are four protrusions on the same side, and the four protrusions are arranged at equal distances around the inner core.

[0024] In a possible implementation, a sleeve is sleeved on the elastic body, and the sleeve is used to fill the gap between the elastic body and the inner wall of the reserved hole.

[0025] In a possible implementation, one end of the sleeve is provided with a second flange portion extending radially outward;

[0026] When the bushing assembly is inserted into the reserved hole, the second flange portion abuts against the outer wall of the frame.

[0027] In the embodiment of the present application, the elastomer is limited by the raised portions on both sides of the inner core to prevent the elastomer from moving along the axial direction of the inner core, thereby preventing relative movement between the inner core and the elastomer along the axial direction.

[0028] Compared with the prior art, the suspension assembly provided in this embodiment can improve the stiffness of the bushing-type suspension along the axial direction of the bushing, so that it can effectively absorb large impacts and loads, ensure the use effect of the engine suspension, and avoid interference between the suspension and surrounding components. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 One of the three-dimensional structural schematic diagrams of the suspension assembly provided in the embodiment of the present application;

[0030] Figure 2 The second schematic diagram of the three-dimensional structure of the suspension assembly provided in the embodiment of the present application;

[0031] Figure 3 A schematic diagram of the exploded structure of the suspension assembly provided in an embodiment of the present application;

[0032] Figure 4 A three-dimensional structure diagram of the elastic body used in the embodiment of the present application;

[0033] Figure 5 A side view of the elastic body used in the embodiment of the present application;

[0034] Figure 6 A schematic cross-sectional view of the elastic body used in the embodiment of the present application;

[0035] Explanation of the accompanying drawings: 1. Skeleton; 11. Reserved hole; 2. Bushing assembly; 21. Inner core; 211. Protrusion; 22. Elastomer; 221. Cylinder; 2211. Abutment portion; 2212. First flange portion; 222. Connecting portion; 223. Arc plate; 224. Reinforcement portion; 3. Sleeve; 31. Second flange portion. DETAILED DESCRIPTION

[0036] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0037] Please also read Figures 1 to 6 The suspension assembly provided in the present application is now described. The suspension assembly provided in the present application includes a frame 1 and a bushing assembly 2.

[0038] The skeleton 1 is cast with aluminum alloy material, or injection molded with engineering plastic material (injection molding is a processing method used in mass production of certain complex-shaped parts, specifically refers to the high-pressure injection of heated and molten plastic into a mold cavity by an injection molding machine, and after cooling and solidification, a molded product is obtained), and a reserved hole 11 is opened thereon and passes through in the width direction, and the aforementioned bushing assembly 2 is inserted into the reserved hole 11, and the specific insertion method usually adopts interference fit assembly.

[0039] In this embodiment, the bushing assembly 2 includes an inner core 21 and an elastomer 22; wherein the inner core 21 is cast by aluminum alloy material (casting is a process of melting metal, injecting it into a pre-made mold, and obtaining the desired workpiece or blank through condensation and cleaning) to ensure its structural strength; the elastomer 22 is made of elastic material, and is usually made of rubber.

[0040] The inner core 21 is inserted into the reserved hole 11; in the present embodiment, the inner core 21 is coaxially inserted into the reserved hole 11, and its two ends extend from the two ends of the reserved hole 11 to the two sides of the skeleton 1, and the extended parts of the inner core 21 (located on both sides) have protrusions 211 extending radially outward.

[0041] The elastomer 22 is sleeved on the outer periphery of the inner core 21, and its inner wall is connected to the inner core 21, and it is located between the two protrusions 211; in this embodiment, the elastomer 22 is sleeved on the inner core 21 by vulcanization to improve the connection strength between the elastomer 22 and the inner core 21 (the vulcanization mentioned here refers to the process of forming a network polymer through cross-linking of linear polymers).

[0042] In actual use, the two ends of the elastomer 22 are respectively connected to the two protrusions 211 to limit the movement of the elastomer 22 relative to the inner core 21; that is, in the embodiment of the present application, the elastomer 22 is limited by the protrusions 211 on both sides of the inner core 21 to prevent the elastomer 22 from moving along the axial direction of the inner core 21, thereby preventing the inner core 21 and the elastomer 22 from relative movement along the axial direction.

[0043] Compared with the prior art, the suspension assembly provided in this embodiment can improve the stiffness of the bushing-type suspension along the axial direction of the bushing, so that it can effectively absorb large impacts and loads, ensure the use effect of the engine suspension, and avoid interference between the suspension and surrounding components.

[0044] In some embodiments, Figures 3 to 6 As shown, the elastic body 22 includes a cylinder 221 and a plurality of connecting parts 222 .

[0045] The cylinder 221 is disposed around the inner core 21 , and two ends of the inner core 21 extend to two sides of the cylinder 221 respectively; in actual preparation, the cylinder 221 can be made of a hard material.

[0046] The multiple connection parts 222 are all made of elastic material, are distributed in the cylinder 221 at intervals along the circumference of the cylinder 221, and are all connected to the inner wall of the cylinder 221.

[0047] Each connecting portion 222 extends toward the central axis of the cylinder 221 . The purpose of such design is that when the inner core 21 is inserted into the cylinder 221 , the extending end of each connecting portion 222 abuts against the outer peripheral wall of the inner core 21 .

[0048] In some embodiments, Figures 4 to 6 As shown, the extended ends of two connecting portions 222 adjacent to each other along the circumferential direction of the cylinder 221 are connected via an arc-shaped plate 223 .

[0049] In actual use, when the extended end of each connecting portion 222 abuts against the outer peripheral wall of the inner core 21 , each arc-shaped plate 223 abuts against the outer peripheral wall of the inner core 21 .

[0050] It should be supplemented that the inner side surface of the arc plate 223 and the extended end surface of the connecting portion 222 form an annular surface structure that matches the outer peripheral wall of the inner core 21 to ensure radial limitation of the inner core 21 .

[0051] In some embodiments, Figures 4 to 6 As shown, the inner wall of the cylinder 221 has a plurality of reinforcing portions 224 spaced apart along its circumference, and each reinforcing portion 224 is located between two adjacent connecting portions 222 along the circumference of the cylinder 221 to strengthen the structural strength of the cavity between the two adjacent connecting portions 222 .

[0052] In some embodiments, Figure 2 and Figure 4 As shown, one end of the cylinder 221 has an abutment portion 2211 extending radially inward; the purpose of this design is that when the inner core 21 is inserted into the cylinder 221, the protrusion 211 can abut against the abutment portion 2211 to extend the contact area between the inner core 21 and the elastomer 22, thereby improving the structural stability of the bushing assembly 2.

[0053] It should be noted that the abutment portion 2211 is selected because it can effectively reduce the production and assembly processes, reduce the types, quantity and weight of components, thereby reducing R&D investment costs and increasing output benefits.

[0054] In some embodiments, Figure 1 and Figure 3As shown, one end of the elastomer 22 is provided with a first flange portion 2212 extending radially outward; when the bushing assembly 2 is inserted into the reserved hole 11, the first flange portion 2212 abuts against the outer wall of the skeleton 1, thereby increasing the contact area between the elastomer 22 and the skeleton 1, and improving the structural stability between the skeleton 1 and the bushing assembly 2.

[0055] In some embodiments, Figures 1 to 3 As shown, there are multiple protrusions 211 on the same side, and the multiple protrusions 211 are arranged around the inner core 21; that is, in this embodiment, there are two groups of protrusions 211, and the two groups of protrusions 211 are respectively arranged on both sides of the inner core 21; each group of protrusions 211 includes multiple protrusions 211 distributed at intervals along the circumference of the inner core 21.

[0056] By adopting the above technical scheme, the contact area between the inner core 21 and the elastomer 22 is increased, and the stability of the limiting effect between the inner core 21 and the elastomer 22 is enhanced. Specifically: the structure formed by the multiple protrusions 211 has the advantages of diversified matching characteristics, which is convenient for the integrated hard limiting structure design of the inner core 21 to meet the requirements of common, platform and serialized construction, reduce the cost investment in the product development of the bushing assembly 2, further increase the production ratio of the components, and enhance the market benefits of the vehicle model.

[0057] In some embodiments, Figures 1 to 3 As shown, there are four protrusions 211 on the same side, and the four protrusions 211 are arranged around the inner core 21 at equal intervals to form a cross-shaped rigid limiting structure.

[0058] It should be noted that the aforementioned raised portion 211 can also be designed into different structures such as a straight line, a circle, an I-shape, etc., so that the present structure has the characteristics and advantages of diversified coordination, so that the present design can meet the requirements of common, platform-based, and serialized construction and construction, reduce the cost investment in the product development of the bushing assembly 2, further increase the production ratio of the outer tube and the rubber body, and improve the vehicle model efficiency.

[0059] In some embodiments, Figures 1 to 3 As shown, a sleeve 3 is sleeved on the elastic body 22 , and the sleeve 3 is used to fill the gap between the elastic body 22 and the inner wall of the reserved hole 11 .

[0060] It should be noted that the sleeve 3 is made of aluminum alloy by extrusion molding (extrusion molding refers to a processing method in which the material passes through the action between the extruder barrel and the screw, is heated and plasticized, and is pushed forward by the screw, and continuously passes through the head to form various cross-section products or semi-finished products) or engineering plastic injection molding.

[0061] In some embodiments, Figure 1 and Figure 3As shown, one end of the sleeve 3 is provided with a second flange portion 31 extending radially outward; in the present embodiment, the second flange portion 31 is on the same side as the aforementioned first flange portion 2212, and the first flange portion 2212 abuts against the outer wall of the skeleton 1 through the second flange portion 31; specifically, when the bushing assembly 2 is inserted into the reserved hole 11, the second flange portion 31 abuts against the outer wall of the skeleton 1.

[0062] By adopting the above technical solution, under the working condition where the peak torque output of the driving motor is very large, the second flange portion 31 can avoid the torsion of the elastic body 22, thereby avoiding the swing of the skeleton 1; at the same time, the second flange portion 31 can also take into account the adjustment of the proportion of all-directional stiffness, effectively absorb large impacts and loads, reasonably control the displacement, and prevent interference between the suspension and surrounding matching components.

[0063] It should be pointed out that both the first flange portion 2212 and the second flange portion 31 may be provided with wavy protrusions or pockmarked structures to prevent the bushing assembly 2 from generating friction noise between the inner core 21 and the flange when it is subjected to greater impact and load forces.

[0064] Based on the same inventive concept, an embodiment of the present application also provides a car, comprising a suspension assembly as proposed in any of the aforementioned items.

[0065] The beneficial effects of the automobile provided by this embodiment are the same as the beneficial effects of the aforementioned suspension assembly, and will not be repeated here.

[0066] The above content is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A suspension assembly, comprising a frame (1) and a bushing assembly (2); wherein: The frame (1) is provided with a reserved hole (11), and the bushing assembly (2) is inserted into the reserved hole (11); the bushing assembly (2) is characterized in that it comprises: An inner core (21) is inserted into the reserved hole (11); two ends of the inner core (21) extend from two ends of the reserved hole (11) to two sides of the frame (1), and the extended parts of the inner core (21) have protrusions (211) extending radially outward; and An elastic body (22) is sleeved on the outer periphery of the inner core (21), an inner wall of which is connected to the inner core (21), and is located between the two protruding portions (211); Wherein, the two ends of the elastic body (22) are respectively connected to the two protruding portions (211) to limit the movement of the elastic body (22) relative to the inner core (21).

2. The suspension assembly according to claim 1, characterized in that: The elastic body (22) comprises: A cylinder (221) is disposed around the inner core (21); and A plurality of connecting parts (222) are distributed in the cylinder (221) at intervals along the circumference of the cylinder (221), and are all connected to the inner wall of the cylinder (221); Each of the connecting portions (222) extends toward the central axis of the barrel (221); when the inner core (21) is inserted into the barrel (221), the extending end of each of the connecting portions (222) abuts against the outer peripheral wall of the inner core (21).

3. The suspension assembly according to claim 2, characterized in that: The extended ends of two adjacent connecting portions (222) along the circumferential direction of the cylinder (221) are connected via an arc-shaped plate (223); When the extended end of each connecting portion (222) abuts against the outer peripheral wall of the inner core (21), each arc-shaped plate (223) abuts against the outer peripheral wall of the inner core (21).

4. The suspension assembly according to claim 2, characterized in that: The inner wall of the cylinder (221) is provided with a plurality of reinforcement portions (224) distributed at intervals along its circumference, and each reinforcement portion (224) is located between two adjacent connecting portions (222) along the circumference of the cylinder (221).

5. The suspension assembly according to claim 2, characterized in that: One end of the cylinder (221) has an abutment portion (2211) extending radially inwardly. When the inner core (21) is inserted into the barrel (221), the protruding portion (211) can abut against the abutting portion (2211).

6. The suspension assembly according to claim 1, characterized in that: One end of the elastic body (22) is provided with a first flange portion (2212) extending radially outward; When the bushing assembly (2) is inserted into the reserved hole (11), the first flange portion (2212) abuts against the outer wall of the frame (1).

7. The suspension assembly according to claim 1, characterized in that: There are a plurality of protrusions (211) on the same side, and the plurality of protrusions (211) are arranged around the inner core (21).

8. The suspension assembly according to claim 7, characterized in that: There are four protrusions (211) on the same side, and the four protrusions (211) are arranged around the inner core (21) at equal intervals.

9. The suspension assembly according to any one of claims 1 to 8, characterized in that: A sleeve (3) is sleeved on the elastic body (22), and the sleeve (3) is used to fill the gap between the elastic body (22) and the inner wall of the reserved hole (11).

10. The suspension assembly according to claim 9, characterized in that: One end of the sleeve (3) is provided with a second flange portion (31) extending radially outward; When the bushing assembly (2) is inserted into the reserved hole (11), the second flange portion (31) abuts against the outer wall of the frame (1).

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