Damping top rubber

Abstract

The utility model provides damping top rubber, and belongs to the technical field of automobile accessories. The problem that an existing damping top rubber is short in service life is solved. The damping top rubber comprises an inner framework, a rubber layer and an outer framework, the inner framework is cylindrical, the top of the inner framework is provided with a protruding part extending in the axial direction, a first connecting hole and a second connecting hole axially penetrate through the inner framework, the first connecting hole axially penetrates through the protruding part, and the inner diameter of the first connecting hole is smaller than that of the second connecting hole; the top of the rubber layer is provided with a first turnup folded inwards and fixedly connected to the top of the inner framework, the first turnup is provided with a plurality of sets of first grooves evenly distributed in the circumferential direction, a gap is formed between the first grooves and the inner edge of the first turnup, the first grooves are communicated to the outer edge of the first turnup in the radial direction, and the bottom of the rubber layer is provided with a second turnup folded inwards and fixedly connected to the bottom of the inner framework. The second flanging is provided with a plurality of second grooves evenly distributed in the circumferential direction, a gap is formed between the second grooves and the outer edge of the second flanging, and the second grooves are communicated to the inner edge of the second flanging in the radial direction. The utility model has the advantages of compact structure, long service life and the like.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts technology, and relates to a shock absorber, particularly a shock absorber top mount. Background Technology

[0002] The shock absorber top mount is used to dampen the intense impact pressure transmitted from the wheels and to reduce some of the vibration, transferring the remaining impact force to the vehicle body.

[0003] For example, Chinese patent literature discloses a sealing structure for vehicle air springs [Application No.: 202411529119.8; Publication No.: CN119122986A], which includes a fastening assembly, an upper mounting base assembly, a piston rod, and a nut. The fastening assembly is located on the top of the upper mounting base. The top side wall of the piston rod is provided with an external thread that mates with the nut. A sealing washer and a top adhesive are provided in the seat hole of the upper mounting base assembly. The top adhesive abuts against the top surface of the sealing washer, and the bottom surface of the sealing washer abuts against the inner bottom surface of the seat hole of the upper mounting base assembly. The inner diameter of the sealing washer is smaller than the outer diameter of the piston rod.

[0004] The sealing structure used for vehicle air springs described above increases sealing performance by setting a sealing gasket at the bottom of the top rubber. However, the top rubber and the sealing gasket are separate structures, which are not compact enough and are not easy to assemble. Moreover, the inner skeleton of the top rubber is circular, which does not provide good support for the rubber middle layer. The connection area is small, and during use, the inner skeleton and the rubber layer are easily torn by impact forces, resulting in a short service life. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a shock-absorbing top adhesive with a compact structure and long service life.

[0006] The objective of this utility model can be achieved through the following technical solution: A shock-absorbing top adhesive includes an inner skeleton, a rubber layer, and an outer skeleton. The rubber layer is vulcanized and fixed to the outer wall of the inner skeleton. The outer skeleton is annular and fixed to the outer wall of the rubber layer. The inner skeleton is cylindrical and has an axially extending protrusion at its top. The inner skeleton has a first connecting hole and a second connecting hole axially penetrating it. The first connecting hole axially penetrates the protrusion, and its inner diameter is smaller than that of the second connecting hole. The top of the rubber layer has an inwardly folded flange fixed to the top of the inner skeleton. The flange has several circumferentially distributed grooves. There is a gap between the grooves and the inner edge of the flange, and the grooves radially connect to the outer edge of the flange. The bottom of the rubber layer has an inwardly folded flange fixed to the bottom of the inner skeleton. The flange has several circumferentially distributed grooves. There is a gap between the grooves and the outer edge of the flange, and the grooves radially connect to the inner edge of the flange.

[0007] In the shock-absorbing top rubber as claimed in any one of the preceding claims, the outer edge of the second flange has a radially outwardly protruding sealing lip.

[0008] In the shock-absorbing top rubber as claimed in any one of the preceding claims, the top outer wall of the inner frame has a radially outwardly protruding protruding ring.

[0009] In the shock-absorbing top rubber as claimed in any one of the preceding claims, the rubber layer is wrapped around a spring, and the spring is sleeved on the inner frame.

[0010] In the shock-absorbing top rubber as claimed in any one of the preceding claims, the inner wall of the first connecting hole is embedded with a first sealing ring.

[0011] In the shock-absorbing top rubber as claimed in any one of the preceding claims, the top wall of the second connecting hole is embedded with a second sealing ring, and the intersection of the first connecting hole and the second connecting hole is surrounded by the second sealing ring.

[0012] In the shock-absorbing top rubber as claimed in any one of the preceding claims, the outer wall of the rubber layer has a plurality of circumferentially distributed and axially extended first reinforcing ribs extending to the first flange, and has a plurality of circumferentially distributed and axially extended second reinforcing ribs extending to the second flange.

[0013] Compared with the prior art, the shock-absorbing top rubber has compact structure, high structural strength, good load impact resistance, good sealing performance and long service life. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a structural front view of the shock-absorbing top rubber.

[0015] Figure 2 is a structural sectional view of the shock-absorbing top rubber.

[0016] Figure 3 is a structural bottom view of the shock-absorbing top rubber.

[0017] Figure 4 is a structural top view of the shock-absorbing top rubber.

[0018] In the drawings, 1 is an inner frame; 11 is a protruding portion; 12 is a first connecting hole; 13 is a second connecting hole; 14 is a protruding ring; 2 is a rubber layer; 21 is a first flange; 211 is a first groove; 22 is a second flange; 221 is a second groove; 222 is a sealing lip; 23 is a first reinforcing rib; 24 is a second reinforcing rib; 3 is an outer frame; 4 is a spring; 5 is a first sealing ring; and 6 is a second sealing ring. DETAILED DESCRIPTION

[0019] The following is a specific embodiment of the present application and further describes the technical solution of the present application in combination with the drawings, but the present application is not limited to these embodiments.

[0020] For example, Figure 1 ,Figure 2 , Figure 3 and Figure 4 As shown, this shock-absorbing top adhesive includes an inner skeleton 1, a rubber layer 2, and an outer skeleton 3. The rubber layer 2 is vulcanized and fixed to the outer wall of the inner skeleton 1. The outer skeleton 3 is annular and fixed to the outer wall of the rubber layer 2. The inner skeleton 1 is cylindrical and has an axially extending protrusion 11 at its top. The inner skeleton 1 has a first connecting hole 12 and a second connecting hole 13 axially penetrating through it. The first connecting hole 12 axially penetrates the protrusion 11, and the inner diameter of the first connecting hole 12 is smaller than the inner diameter of the second connecting hole 13. The top of the rubber layer 2 is folded inward and fixed to the top of the inner skeleton 1. Flanged edge 21 has four sets of circumferentially distributed grooves 211, each set having two grooves 211. There is a gap between the grooves 211 and the inner edge of the flange 21, and the grooves 211 are radially connected to the outer edge of the flange 21. The bottom of the rubber layer 2 has a flange 22 that is folded inward and fixed to the bottom of the inner frame 1. The flange 22 has eight circumferentially distributed grooves 221. There is a gap between the grooves 221 and the outer edge of the flange 22, and the grooves 221 are radially connected to the inner edge of the flange 22.

[0021] This shock-absorbing top cover has an integrated, compact structure. The inner skeleton 1 is cylindrical, providing a large contact area with the rubber layer 2 and offering good support. This prevents the rubber layer 2 from tearing due to impact. The outer skeleton 3 enhances structural strength, preventing the rubber layer 2 from expanding outward under load and extending its service life. Flanged edges 1 21 and 22 further increase the connection area between the rubber layer 2 and the inner skeleton 1, increasing the connection's firmness. Flanged edge 1 21 is used to abut against the top cover, and the groove 1 211 causes it to be compressed and deformed, resulting in a good seal between flanged edge 1 21 and the top cover. Flanged edge 22 is used to abut against the mounting base, and the groove 221 causes it to be compressed and deformed, resulting in a good seal between flanged edge 22 and the mounting base. This eliminates the need for a sealing gasket, simplifying the structure and reducing manufacturing costs.

[0022] To elaborate further, the outer edge of flange 22 has a radially convex sealing lip 222. This eliminates the need for assembling a sealing ring, and the one-piece molded sealing lip 222 makes the structure compact. The sealing lip 222 is used to seal the inner wall of the mounting base, further improving the sealing performance at flange 22, preventing water and dust from entering, and extending service life.

[0023] The top outer wall of the inner skeleton 1 has a radially convex ring 14. The convex ring 14 increases the contact area between the inner skeleton 1 and the rubber layer 2, making the connection between the two more secure. Moreover, the convex ring 14 provides good support for the rubber layer 2, effectively bearing axial impact loads and preventing the rubber layer 2 from tearing.

[0024] The rubber layer 2 is covered with springs 4, and the springs 4 are sleeved on the inner framework 1. The springs 4 increase the axial impact load resistance of the rubber layer 2 and strengthen the buffering effect.

[0025] The inner wall of the connecting hole one 12 is embedded with a sealing ring one 5, which guarantees the sealing between the connecting hole one 12 and the piston rod, avoids water and dust from entering, and prolongs the service life. The top wall of the connecting hole two 13 is embedded with a sealing ring two 6, and the junction between the connecting hole one 12 and the connecting hole two 13 is surrounded by the sealing ring two 6, which further improves the sealing, avoids water and dust from entering, and prolongs the service life.

[0026] The outer wall of the rubber layer 2 has eight reinforcing ribs one 23 which are evenly distributed in the circumferential direction and axially extended to the flange one 21, and the outer wall of the rubber layer 2 also has eight reinforcing ribs two 24 which are evenly distributed in the circumferential direction and axially extended to the flange two 22. In this way, the structural strength of the rubber layer 2 is high, the load impact resistance is good, and the service life is long.

[0027] The contents not described in detail in the specification belong to the prior art known to those skilled in the art. The specific embodiments described herein are only illustrative of the spirit of the utility model. Those skilled in the art to which the utility model belongs can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the utility model or exceed the scope defined by the appended claims.

Claims

1. A shock absorbing top rubber comprising an inner skeleton (1), a rubber layer (2) and an outer skeleton (3), said rubber layer (2) being vulcanized and fixed to the outer wall of the inner skeleton (1), said outer skeleton (3) being annular and fixed to the outer wall of the rubber layer (2), characterized in that, The inner framework (1) is cylindrical and has an axially extending protrusion (11) at the top of the inner framework (1), the inner framework (1) is axially penetrated by a connecting hole one (12) and a connecting hole two (13), the connecting hole one (12) is axially penetrated by the protrusion (11) and the inner diameter of the connecting hole one (12) is smaller than that of the connecting hole two (13), the top of the rubber layer (2) has a flange one (21) which is inwardly folded and fixed at the top of the inner framework (1), the flange one (21) has a plurality of groups of circumferentially distributed grooves one (211), the grooves one (211) have a spacing with the inner edge of the flange one (21) and are radially communicated to the outer edge of the flange one (21), the bottom of the rubber layer (2) has a flange two (22) which is inwardly folded and fixed at the bottom of the inner framework (1), the flange two (22) has a plurality of circumferentially distributed grooves two (221), the grooves two (221) have a spacing with the outer edge of the flange two (22) and are radially communicated to the inner edge of the flange two (22).

2. The shock absorbing roof glazing according to claim 1, wherein The outer edge of the flange two (22) has a radially outward convex sealing lip (222).

3. A shock absorbing roof glazing according to claim 2, characterised in that, The outer wall of the top of the inner framework (1) has a radially outward convex flange (14).

4. The shock absorbing roof glazing according to claim 3, wherein, The rubber layer (2) is covered with a spring (4), the spring (4) is sleeved on the inner framework (1).

5. A shock absorbing roof glazing according to claim 4, wherein, The inner wall of the connecting hole one (12) is embedded with a sealing ring one (5).

6. A shock absorbing roof glazing according to claim 5, wherein, The top wall of the connecting hole two (13) is embedded with a sealing ring two (6), and the junction of the connecting hole one (12) and the connecting hole two (13) is surrounded by the sealing ring two (6).

7. A shock absorbing roof glazing according to claim 6, characterised in that, The outer wall of the rubber layer (2) has a plurality of circumferentially distributed and axially extending reinforcing ribs one (23) extending to the flange one (21), and the outer wall of the rubber layer (2) also has a plurality of circumferentially distributed and axially extending reinforcing ribs two (24) extending to the flange two (22). The outer edge of the flange two (22) has a radially outward convex sealing lip (222). The outer wall of the top of the inner framework (1) has a radially outward convex flange (14). The rubber layer (2) is covered with a spring (4), the spring (4) is sleeved on the inner framework (1). The inner wall of the connecting hole one (12) is embedded with a sealing ring one (5). The top wall of the connecting hole two (13) is embedded with a sealing ring two (6), and the junction of the connecting hole one (12) and the connecting hole two (13) is surrounded by the sealing ring two (6). The outer wall of the rubber layer (2) has a plurality of circumferentially distributed and axially extending reinforcing ribs one (23) extending to the flange one (21), and the outer wall of the rubber layer (2) also has a plurality of circumferentially distributed and axially extending reinforcing ribs two (24) extending to the flange two (22).

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