Double fastening type shock absorber top rubber

Abstract

The utility model discloses a double-fastening type shock absorber top rubber which comprises a connecting cylinder (with a mounting ring and an air inlet nozzle), a base (comprising a V-shaped inserting ring and an L-shaped connecting ring) and a rubber block (wrapping the connecting ring, and a buffering gap is reserved between the rubber block and the inserting ring). During installation, the base is fixed to a vehicle body through fastening bolts, the damper cylinder barrel is in threaded connection with the connecting barrel installation ring and is sleeved with the buffer gap in the outer wall of the insertion ring, and the outer wall of the damper and the inner wall of the connecting barrel form an air cavity. According to the structure, the connecting mode of the top rubber and the shock absorber is optimized, the occupied stroke of the shock absorber is reduced, meanwhile, the rubber block is used for buffering vibration, stability and buffering performance are both considered, and the structure is matched with an automobile shock absorption system with a chassis lifting function.

Description

Technical Field

[0001] This utility model relates to the field of automotive shock absorption system technology, specifically to a double-fastening shock absorber top rubber. Background Technology

[0002] The shock absorber top mount is a crucial component of an automotive damping system, installed between the vehicle body and the shock absorber. It primarily absorbs irregular vibrations transmitted to the vehicle body through the elastic deformation of the rubber component. Traditionally, the top mount and shock absorber are separate structures, with vibrations directly damped by the rubber. However, with the application of chassis lifting technologies (such as those using supercharged pneumatic drive systems to raise and lower the chassis), the structural complexity of existing top mounts has increased. Furthermore, their installation significantly reduces the shock absorber's travel, compressing the effective damping space and impacting damping performance. Utility Model Content

[0003] To address the aforementioned issues, this invention aims to resolve the problem of the top adhesive occupying the shock absorber's stroke and affecting its cushioning performance in the prior art. It provides a double-fastening shock absorber top adhesive, which reduces the occupation of the shock absorber's stroke through optimized structural design, while simultaneously improving cushioning stability.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a double-fastening shock absorber top adhesive, comprising:

[0005] Connecting cylinder: The lower end face is an annular end face, and the upper end is provided with a mounting ring (the outer diameter is smaller than the outer diameter of the connecting ring, and the outer peripheral wall has fastening threads).

[0006] Base: Ring structure, including a central insert ring (V-shaped cross-section, with the upper part passing through the connecting ring and hollow inside the connecting cylinder) and a bottom connecting ring (L-shaped cross-section, with fastening bolts evenly distributed around the outer circumference).

[0007] Rubber block: The annular end face connecting the connecting ring and the connecting cylinder, wrapping the outer peripheral wall of the connecting ring, and leaving a buffer gap between it and the outer wall of the insert ring;

[0008] Additional structure: An air inlet is installed on the outer peripheral wall of the connecting cylinder (connected to an air pump, used to drive the extension and retraction of the shock absorber piston rod and the lifting and lowering of the chassis).

[0009] During installation, the base's fastening bolts connect to the vehicle body, and the mounting sleeve on the outer circumference of the shock absorber cylinder is threadedly connected to the mounting ring at the upper end of the connecting cylinder. After the inner opening of the shock absorber cylinder is sealed, it is fitted onto the outer wall of the insert ring and inserted into the buffer gap between the rubber block and the insert ring. The outer wall of the shock absorber cylinder and the inner wall of the connecting cylinder form an air chamber, and the air intake nozzle controls the chassis lifting by supplying air through an air pump. The impact borne by the shock absorber is transmitted to the rubber block for cushioning and shock absorption through the connecting cylinder.

[0010] The beneficial effects of this utility model are:

[0011] 1. Through the design of "V" shape insertion ring and buffer gap, the occupation of top rubber to shock absorber stroke is reduced, and the effective buffer space of shock absorber is ensured;

[0012] 2. The composite connection structure (fastening bolt + rubber elastic buffer) of rubber block, connecting cylinder and base realizes double fastening, and improves installation stability and buffer reliability;

[0013] 3. The cooperation of air inlet and air cavity is compatible with chassis lifting function, and meets the demand of modern complex damping system.

[0014] The utility model will be further described below in combination with the drawings and specific embodiments. DRAWINGS

[0015] Figure 1 It is a perspective view of the specific embodiment of the utility model;

[0016] Figure 2 It is a sectional view of the specific embodiment of the utility model;

[0017] Figure 3 It is Figure 2 the enlarged view of A;

[0018] The reference signs are explained as follows: 1-connecting cylinder; 11-mounting ring; 12-air inlet; 2-rubber block; 3-base; 31-connection ring; 32-insertion ring; 33-fastening bolt; 4-buffer gap. SPECIFIC EMBODIMENT

[0019] The utility model will be further described below in combination with the drawings and specific embodiments.

[0020] As shown in the drawings, Figure 1 — Figure 3 The embodiment discloses a double-fastening type shock absorber top rubber, which comprises:

[0021] Connecting cylinder 1: the overall height is 50mm, and the outer diameter is 80mm; the outer diameter of mounting ring 11 is 60mm (less than the outer diameter 70mm of connection ring), the thickness is 8mm, the fastening thread is M12x1.25 (adapted to common passenger car shock absorber mounting sleeve); the diameter of air inlet 12 is 8mm, and the air inlet is arranged on the outer peripheral wall of connecting cylinder and is 10mm away from the upper end surface of mounting ring (close to mounting ring to facilitate air path connection).

[0022] Base 3: the outer diameter of connection ring 31 is 70mm, the inner diameter is 45mm, and the thickness is 10mm; the outer diameter of insertion ring 32 is 35mm, the opening angle of "V" shape cross section is 150°, the opening direction faces the inner wall of connecting cylinder, and the height is 25mm, wherein 17mm is inserted into the buffer gap 4 between rubber block and insertion ring.

[0023] The connecting ring 31 is "L" shaped, and the outer peripheral wall is circumferentially provided with four M10x1.0 fastening bolts 33, which are uniformly distributed at an interval of 90°.

[0024] The rubber block 2 has a thickness of 15 mm (the thickness of the part wrapped around the outer peripheral wall of the connecting ring is uniform), and a Shore hardness of 60HA (considering elasticity and durability), and is fixedly connected to the outer peripheral wall of the connecting ring and the annular end face of the connecting cylinder through a vulcanization process (the thickness of the vulcanized layer is 2 mm).

[0025] The installation process is as follows: 1. Fix the base: align the four fastening bolts 33 of the base 3 with the pre-installed holes (hole diameter M10) on the vehicle body floor, and fix them by tightening the nuts (pre-tightening torque is 30 N·m), to ensure that the base is rigidly connected to the vehicle body.

[0026] 2. Connect the shock absorber: screw the mounting sleeve (adapted to M12 threads) on the outer periphery of the shock absorber cylinder into the mounting ring 11 (screwed in to a depth of complete thread engagement) on the upper end of the connecting cylinder 1, to ensure that the mounting ring is coaxial with the shock absorber mounting sleeve (deviation ≤0.5 mm).

[0027] 3. Sleeve the shock absorber cylinder: seal the inner opening end of the shock absorber cylinder (the original flat end in contact with the top rubber) with a metal sealing plate (sealing plate thickness 3 mm, welded and fixed), then sleeve the outer wall of the cylinder from above the connecting cylinder, so that the inner wall of the cylinder cooperates with the outer wall of the plug-in ring 32 (the plug-in ring is inserted into the inner opening of the cylinder about 10 mm below), until the lower end face of the cylinder is in contact with the upper surface of the rubber block 2 (at this time, an annular air cavity is formed between the outer wall of the cylinder and the inner wall of the connecting cylinder, and the height of the air cavity is 30 mm).

[0028] 4. Connect the air path: connect the air inlet nozzle 12 to the vehicle-mounted air pump (air pump working pressure range 0.5~1.5 MPa) through a high-pressure air pipe, and the air pump can adjust the air pressure in the air cavity according to the demand for lifting the chassis (e.g. inflate when lifting the chassis, and deflate when lowering it).

[0029] Working state: when the vehicle is driving on uneven road surfaces, the shock absorber piston rod is impacted and vibrates up and down, the vibration energy is transmitted to the connecting cylinder 1 through the shock absorber cylinder, then buffered by the elastic deformation of the rubber block 2 (the rubber block compresses / returns to absorb impact energy), and finally transmitted to the base 3 and the vehicle body. Due to the "V" shaped section of the plug-in ring 32 and the existence of the buffer gap 4, the shock absorber cylinder will not rigidly interfere with the rubber block or the plug-in ring during the lifting process (such as when the air pump inflates to lift the chassis), avoiding the travel compression problem caused by structural interference of the traditional top rubber (this embodiment can increase the effective travel of the shock absorber by 10%~15%). At the same time, the cooperation of the air inlet nozzle 12 and the air cavity realizes the function of lifting the chassis, which meets the demand of the air suspension system of high-end passenger cars.

[0030] After adopting the above technical scheme, the following technical effects can be achieved:

[0031] 1. Through the design of "V" shape ring and buffer gap, reduce the occupation of top glue to shock absorber travel, guarantee the effective buffer space of shock absorber;

[0032] 2. The composite connection structure (fastening bolt + rubber elastic buffer) of rubber block and connecting cylinder, base realizes double fastening, improves the installation stability and buffer reliability;

[0033] 3. The cooperation of air inlet and air cavity is compatible with chassis lifting function, which meets the needs of modern complex damping system.

Claims

1. A dual fastening type bumper grommet, characterized by, The utility model relates to a kind of air filter, including: Connecting cylinder (1), the lower end surface is annular end surface, the upper end is equipped with the installation ring (11) of the outer diameter less than the outer diameter of connecting ring (31) and the outer peripheral wall with fastening thread;Base (3), annular, including the insertion ring (32) of middle part and the connecting ring (31) of bottom, the section of the insertion ring (32) is "V” and upper portion is placed in the inner chamber of connecting cylinder (1) by passing through the hollow of connecting ring (31), the section of the connecting ring (31) is "L” and the fastening bolt (33) is uniformly distributed on the outer peripheral wall circumference;Rubber block (2), connect between the annular end surface of connecting ring (31) and connecting cylinder (1), wrap the outer peripheral wall of connecting ring (31), and there is buffer gap (4) between rubber block (2) and the outer wall of insertion ring (32);The outer peripheral wall of the connecting cylinder (1) is installed with the air inlet nozzle (12) connected with air pump.

2. The dual fastening shock absorber tip grommet of claim 1, wherein: The "V” section of the insertion ring (32) opening direction is towards the inner wall of connecting cylinder (1).

3. The dual fastening shock absorber tip grommet of claim 1, wherein: Fixed connection by vulcanization process and the annular end surface of connecting ring (31) and connecting cylinder (1).

4. The dual fastening shock absorber tip grommet of claim 1, wherein: The air inlet nozzle (12) is set on the outer peripheral wall of connecting cylinder (1) close to the position of installation ring (11).

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