Shock absorber with an upper mount assembly having an exhaust port

Abstract

The utility model relates to automobile shock absorbing parts technical field especially, more particularly to a shock absorber of upper support assembly with exhaust hole, including shock absorber body and piston rod, the shock absorber body includes framework assembly and cover plate subassembly, and in the clearance air chamber that is formed with the framework assembly and cover plate subassembly, the piston rod top end is linked with cover plate subassembly, to drive cover plate subassembly to do vertical reciprocating motion, the shock absorber body both sides symmetry has opened the exhaust hole with clearance air chamber intercommunication. The utility model discloses the arc exhaust hole of symmetry is opened in the shock absorber body both sides, when piston rod is stretched upwards and drives cover plate subassembly to extrude clearance air chamber, the high pressure air in the chamber is directly released outward via the exhaust hole, eliminates the airflow shear effect that high pressure airflow is forced from the tiny gap of rubber part extrusion in traditional structure, suppresses the generation of exhaust howling abnormal sound from sound source, improves the comfort of driving and riding.

Description

Technical Field

[0001] This utility model relates to the field of automotive shock absorber components, and in particular to a shock absorber with an upper support assembly having an exhaust port. Background Technology

[0002] The upper support assembly of a car shock absorber is a key load-bearing component connecting the shock absorber piston rod to the vehicle body. It is mainly composed of a metal frame, elastic rubber parts, and a riveted cover plate assembly. After assembly, the frame assembly and cover plate assembly form a sealed air chamber. When the vehicle travels over bumpy roads, the piston rod reciprocates, causing the cover plate assembly to rise and fall synchronously, resulting in the periodic increase and decrease of the air chamber volume.

[0003] However, in the actual operation of the existing upper support assembly, when the vehicle travels on bumpy roads causing the shock absorber to extend its stroke, the piston rod moves axially upwards, causing the connected cover plate assembly to move upwards simultaneously, resulting in a sharp reduction in the volume of the air chamber. At this time, the air inside the chamber is rapidly compressed, and the air pressure rises rapidly. Because the existing structure does not have a dedicated exhaust channel, the high-pressure air can only be forced out through the tiny gaps between the rubber elastomer and the frame or cover plate. When the high-speed airflow flows through the narrow gap, it generates a strong airflow shearing effect, causing a high-frequency hissing or whistling noise. This noise is amplified by the body sheet metal and transmitted into the vehicle interior, seriously affecting ride comfort and the overall NVH quality of the vehicle. Utility Model Content

[0004] The purpose of this invention is to provide a shock absorber with an upper support assembly having an exhaust port, so as to solve the above-mentioned shortcomings in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a shock absorber with an upper support assembly having an exhaust port, comprising a shock absorber body and a piston rod. The shock absorber body includes a frame assembly and a cover plate assembly, and a gap air chamber is formed by the frame assembly and the cover plate assembly. The top of the piston rod is connected to the cover plate assembly to drive the cover plate assembly to perform vertical reciprocating motion. The shock absorber body has symmetrical exhaust ports on both sides that communicate with the gap air chamber.

[0006] The exhaust port has an exhaust posture and a dustproof posture. In response to the exhaust posture, the piston rod drives the cover plate assembly to move upward. The exhaust port connects the gap air chamber with the outside world so that the pressurized air in the gap air chamber can be discharged outward.

[0007] In response to the dustproof posture, the piston rod is in a static state or moves downward, and the end face of the cover plate assembly blocks the exhaust hole to isolate the gap air chamber from the outside.

[0008] As a further description of the above technical solution: the exhaust port is configured as an arc-shaped through-hole structure, with one end of the exhaust port connected to the gap air cavity and the other end connected to the outside atmosphere.

[0009] As a further description of the above technical solution: the cover plate assembly includes a lower cover plate and an upper cover plate, the upper end face of the lower cover plate and the lower end face of the upper cover plate are riveted and fixed, and the piston rod is assembled between the lower cover plate and the upper cover plate to drive the lower cover plate and the upper cover plate to move up and down, thereby causing the volume change of the gap air chamber.

[0010] As a further description of the above technical solution: the skeleton assembly includes an inner skeleton, an outer skeleton, and a rubber component. The inner skeleton is arranged on the lower side inside the shock absorber body, the outer skeleton is arranged on the upper side inside the shock absorber body, and the rubber component is filled between the inner skeleton and the outer skeleton.

[0011] As a further description of the above technical solution: the shock absorber body has a threaded hole in the circumferential direction, and a screw is threaded into the threaded hole. The shock absorber body is locked and fixed to the vehicle body by the screw.

[0012] This utility model provides a shock absorber with an upper support assembly featuring an exhaust port. It offers the following advantages:

[0013] 1. This utility model, by symmetrically opening arc-shaped exhaust holes on both sides of the shock absorber body, allows the high-pressure air in the cavity to be directly released outward through the exhaust holes when the piston rod is stretched upward and drives the cover plate assembly to squeeze the gap air chamber. This eliminates the airflow shearing effect caused by the high-pressure airflow being forced out of the tiny gaps in the rubber parts in the traditional structure, and suppresses the generation of exhaust whistling noise from the source.

[0014] 2. This utility model designs the exhaust port as a dual-position structure of "exhaust-dustproof" that automatically switches with the piston rod stroke. When the piston rod moves upward, the exhaust port is open to achieve noise reduction and exhaust. When the piston rod is stationary or moves downward, the end face of the upper cover plate automatically seals the end of the exhaust port. Without adding any additional valves or electronic control components, this invention achieves both active exhaust and noise reduction and passive dustproof and waterproof functions. The structure is simple and reliable and requires no maintenance.

[0015] 3. This utility model uses a symmetrical layout design of exhaust holes to allow airflow from both sides to be discharged synchronously during the pressure relief process of the gap air chamber, so that the internal pressure of the air chamber is released evenly, avoiding the problem of uneven force on the cover plate assembly and local stress concentration caused by pressure relief on one side.

[0016] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this disclosure.

[0017] This application provides an overview of various implementations or examples of the technology described in this disclosure, and is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a front view structural diagram of the present invention;

[0020] Figure 3 This is a front view cross-sectional structural diagram of the shock absorber of this utility model;

[0021] Figure 4 This is a top-view structural diagram of the present invention.

[0022] Legend:

[0023] 1. Shock absorber body;

[0024] 2. Skeleton assembly; 21. Inner skeleton; 22. Outer skeleton; 23. Rubber parts;

[0025] 3. Cover plate assembly; 31. Lower cover plate; 32. Upper cover plate;

[0026] 4. Gap chamber; 5. Piston rod; 6. Exhaust port. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Example 1

[0029] Reference Figures 1-4 A shock absorber with an upper support assembly and an exhaust port includes a shock absorber body 1 and a piston rod 5. The shock absorber body 1 includes a frame assembly 2 and a cover plate assembly 3, and the frame assembly 2 and the cover plate assembly 3 together form a gap air chamber 4. The top end of the piston rod 5 is connected to the cover plate assembly 3 to drive the cover plate assembly 3 to perform vertical reciprocating motion. The cover plate assembly 3 includes a lower cover plate 31 and an upper cover plate 32. The upper end face of the lower cover plate 31 and the lower end face of the upper cover plate 32 are riveted and fixed. The piston rod 5 is assembled between the lower cover plate 31 and the upper cover plate 32. When the piston rod 5 reciprocates, it synchronously drives the lower cover plate 31 and the upper cover plate 32 to rise and fall together, thereby realizing the increase and decrease of the volume of the gap air chamber 4.

[0030] The shock absorber body 1 has symmetrical exhaust holes 6 on both sides that communicate with the gap air chamber 4. The exhaust holes 6 are set as arc-shaped through holes, with one end of the exhaust hole 6 connected to the gap air chamber 4 and the other end connected to the outside atmosphere.

[0031] The exhaust port 6 has an exhaust posture and a dustproof posture. In response to the exhaust posture, the piston rod 5 drives the cover plate assembly 3 to move upward, and the exhaust port 6 connects the gap air chamber 4 with the outside world so that the pressurized air in the gap air chamber 4 can be discharged outward. In response to the dustproof posture, the piston rod 5 is in a stationary state or moves downward, and the end face of the cover plate assembly 3 blocks the exhaust port 6 to isolate the gap air chamber 4 from the outside world.

[0032] When the piston rod 5 moves upward along the Z-axis, the piston rod 5 drives the cover plate assembly 3 to rise as a whole, and the upper cover plate 32 moves upward accordingly. The end of the exhaust port 6 is released and exposed, and is no longer blocked by the upper cover plate 32. At the same time, the lower cover plate 31, which moves upward synchronously, compresses the gap air chamber 4. The internal volume of the gap air chamber 4 decreases, the air pressure inside the chamber increases, and the compressed air is directly released to the outside through the exhaust port 6.

[0033] Compared to traditional shock absorber upper support assemblies without exhaust ports 6, where the piston rod 5 drives the lower cover plate 31 and upper cover plate 32 to complete stretching and compression reciprocating movements under Z-axis force, in the traditional structure, when the lower cover plate moves upward to compress the cavity, the high-pressure gas inside the gap chamber is forced to be squeezed out through the tiny gaps in the rubber component 23. The high-speed airflow passing through the narrow gap will cause airflow shearing effect, thus producing exhaust whistling noise. In contrast, in this solution, during the air chamber pressure exhaust stage, the high-pressure gas is directly discharged outward through the preset exhaust port 6, eliminating the phenomenon of high-pressure airflow leaking out through the gaps in the rubber component, and suppressing the generation of airflow whistling at the source.

[0034] When the piston rod 5 is at rest or when the piston rod 5 moves downward along the Z-axis, the upper cover plate 32 moves downward along with it. The end face of the upper cover plate 32 presses against and fits against the end opening of the exhaust port 6, sealing the exhaust port 6. This can prevent dust, mud, water vapor and other pollutants from entering the gap air chamber 4 through the exhaust port 6, avoid water vapor causing corrosion of the metal cover plate, and prevent impurities from entering the cavity and wearing down the rubber parts, thus extending the overall service life of the upper support assembly.

[0035] Specifically, the frame assembly 2 includes an inner frame 21, an outer frame 22, and a rubber component 23. The inner frame 21 is arranged inside the lower side of the shock absorber body 1, the outer frame 22 is arranged inside the upper side of the shock absorber body 1, and the rubber component 23 is filled between the inner frame 21 and the outer frame 22.

[0036] Specifically, the shock absorber body 1 has several threaded mounting holes circumferentially, and locking screws are installed in the threaded mounting holes. The shock absorber body 1 is locked and fixed to the vehicle body bracket by means of the locking screws, thereby completing the assembly and docking of the shock absorber body and the vehicle body.

[0037] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., 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, the 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.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A shock absorber with an upper support assembly having an exhaust port, characterized in that: The shock absorber includes a shock absorber body (1) and a piston rod (5). The shock absorber body (1) includes a frame assembly (2) and a cover plate assembly (3). The frame assembly (2) and the cover plate assembly (3) together form a gap air chamber (4). The top of the piston rod (5) is connected to the cover plate assembly (3) to drive the cover plate assembly (3) to perform vertical reciprocating motion. The shock absorber body (1) has symmetrical exhaust holes (6) on both sides that communicate with the gap air chamber (4). The exhaust port (6) has an exhaust posture and a dustproof posture. In response to the exhaust posture, the piston rod (5) drives the cover plate assembly (3) to move upward. The exhaust port (6) connects the gap air chamber (4) with the outside world so that the compressed air in the gap air chamber (4) can be discharged outward. In response to the dustproof posture, the piston rod (5) is in a static state or moves downward, and the end face of the cover plate assembly (3) blocks the exhaust hole (6) to isolate the gap air chamber (4) from the outside world.

2. The shock absorber of the upper support assembly with vent holes according to claim 1, characterized in that: The exhaust port (6) is configured as an arc-shaped through hole structure, with one end of the exhaust port (6) connected to the gap air chamber (4) and the other end connected to the outside atmosphere.

3. The shock absorber of the upper support assembly with vent holes according to claim 1, characterized in that: The cover plate assembly (3) includes a lower cover plate (31) and an upper cover plate (32). The upper end face of the lower cover plate (31) and the lower end face of the upper cover plate (32) are riveted and fixed. The piston rod (5) is assembled between the lower cover plate (31) and the upper cover plate (32) to drive the lower cover plate (31) and the upper cover plate (32) to move up and down, thereby causing the volume change of the gap air chamber (4).

4. The shock absorber of the upper support assembly with vent holes according to claim 1, characterized in that: The skeleton assembly (2) includes an inner skeleton (21), an outer skeleton (22) and a rubber component (23). The inner skeleton (21) is arranged on the lower side inside the shock absorber body (1), the outer skeleton (22) is arranged on the upper side inside the shock absorber body (1), and the rubber component (23) is filled between the inner skeleton (21) and the outer skeleton (22).

5. The shock absorber of the upper support assembly with vent holes according to claim 1, characterized in that: The shock absorber body (1) has a threaded hole in the circumferential direction, and a screw is connected to the threaded hole. The shock absorber body (1) is locked and fixed to the vehicle body by the screw.

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