A shock absorber noise reduction structure

Abstract

The utility model relates to a shock absorber noise reduction structure belongs to shock absorber technical field, including shock absorber main part, upper support, lower support, no. The utility model discloses a shock absorber noise reduction structure can carry out effective noise reduction processing to high frequency and low frequency mixed noise to further improve the noise reduction effect, and the overall noise reduction shell is convenient to dismount and handle, thereby being convenient for maintenance, and the telescopic protective shell is provided, can prevent the shock absorber from being exposed in the part of ageing abrasion, thereby can effectively improve the service life and prevent ageing and produce additional noise.

Description

Technical Field

[0001] This utility model relates to the field of shock absorber technology, and in particular to a shock absorber noise reduction structure. Background Technology

[0002] The main reason for noise reduction treatment of shock absorbers is to improve the overall performance, comfort and safety of vehicles or mechanical equipment. When shock absorbers absorb road impacts, the internal oil flow, valve action or mechanical friction may generate noise such as "gurgling" or "clicking", which directly affects the driving experience.

[0003] A search revealed that Chinese patent application number CN202322431699.4 discloses a noise reduction structure for a shock absorber. The design of the support plate and support slot allows for a limiting connection between the first and second housings, preventing positional displacement during installation that could lead to poor sound insulation. The design of the telescopic spring and movable plate secures the connection between the first and second housings and protects the shock absorber components, thus solving the problems of the shock absorber's lifespan being affected and its noise reduction effect gradually weakening due to exposure to the outside environment.

[0004] The above-mentioned technical solution has the following drawbacks: although such a shock absorber noise reduction structure can isolate noise through a soundproof shell, in actual use, using only a single soundproof noise reduction structure cannot effectively absorb mixed high-frequency and low-frequency noise. Moreover, the exposed part of the shock absorber is prone to wear, and the worn parts are also prone to noise over a long period of time. In order to effectively absorb mixed high-frequency and low-frequency noise, improve the noise reduction effect, and protect the shock absorber from wear, a shock absorber noise reduction structure is proposed. This structure has multiple sound-absorbing layers to effectively reduce mixed high-frequency and low-frequency noise. The noise reduction shell is composed of two semi-circular shells and is easy to disassemble and assemble, thus facilitating maintenance. A retractable protective shell is provided to prevent the exposed part of the shock absorber from aging and wear, thereby effectively improving its service life and preventing additional noise caused by aging.

[0005] In view of this, this work improves and solves the above problems. Through dedicated research and application of theoretical principles, a technical solution with a reasonable design that can effectively improve the above defects has finally been proposed.

[0006] The information disclosed in this background section is intended only to enhance the understanding of the general background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0007] This utility model provides a noise reduction structure for a shock absorber, which solves the problems mentioned in the background. It can effectively reduce mixed high-frequency and low-frequency noise, thereby further improving the noise reduction effect. The overall noise reduction housing is easy to disassemble and assemble, thus facilitating maintenance. It is equipped with a retractable protective shell to prevent the exposed parts of the shock absorber from aging and wearing, thereby effectively improving the service life and preventing aging from generating additional noise.

[0008] The present invention provides the following solution to the above-mentioned technical problems: a shock absorber noise reduction structure, comprising a shock absorber body, an upper support, a lower support, a first noise reduction shell, a second noise reduction shell, a connecting slot, a dustproof telescopic sleeve, and multiple sound-absorbing layers. The shock absorber body is provided with a piston rod and a shock-absorbing spring. The piston rod is fixedly connected to the upper support, and the shock absorber body is fixedly connected to the lower support. The first noise reduction shell and the second noise reduction shell can be connected by connecting slots and screws. The first noise reduction shell and the second noise reduction shell can be combined into a cylindrical structure, which encloses the piston rod and the shock-absorbing spring. The upper support, the first noise reduction shell, and the second noise reduction shell are all provided with multiple sound-absorbing layers.

[0009] The multi-layer sound-absorbing layer includes a sound-insulating cotton layer, a polyurethane foam layer, and a glass fiber layer. The sound-insulating cotton layer is the inner layer, the polyurethane foam layer is the middle layer, and the glass fiber layer is the outer layer placed on the outer wall of the upper support, the first noise-reducing shell, and the second noise-reducing shell.

[0010] Based on the above technical solution, the present invention can be further improved as follows.

[0011] Furthermore, the shock absorber body is fixedly installed with a bottom connecting plate. The dustproof telescopic sleeve can be connected to the bottom connecting plate, the first noise reduction shell, and the second noise reduction shell via screws. The dustproof telescopic sleeve can be fitted onto the outer wall of the shock absorber body cylinder. The dustproof telescopic sleeve wraps around the gap of the two side limiting discs, so that the sliding grooves of the first and second noise reduction shells can be protected, thereby preventing aging and wear and causing additional noise during sliding.

[0012] Furthermore, the bottom connecting plate is evenly provided with heat dissipation holes, and a dust filter is installed in the heat dissipation holes. The heat dissipation holes at the bottom of the bottom connecting plate, together with the dust filter, prevent dust from entering, while allowing heat to be discharged naturally.

[0013] Furthermore, both the first and second noise-reducing housings are equipped with connecting strips corresponding to the connecting slots. The connecting slots have through holes, and the connecting strips have screw slots corresponding to the through holes. The connecting slots are fitted onto the connecting strips and then connected by screws for positioning, so that the first and second noise-reducing housings can be stably connected and positioned with just four screws, making disassembly and assembly more convenient.

[0014] Furthermore, both the first and second noise-reducing housings are equipped with arc-shaped retaining plates, and the upper supports are provided with positioning slots corresponding to the arc-shaped retaining plates. The arc-shaped retaining plates can be inserted into the positioning slots for positioning.

[0015] Furthermore, the shock absorber body is fixedly installed with a limiting disc, and there are two limiting discs. The arc-shaped clamping plate is fixedly installed with a rubber pad. The arc-shaped clamping plate with the rubber pad can slide in the gap between the two limiting discs, so that the first noise reduction shell and the second noise reduction shell can slide on the outer wall of the shock absorber body as the shock absorber body extends and retracts.

[0016] Furthermore, heat dissipation fins are uniformly and fixedly installed on the first and second noise reduction housings, thereby improving the heat dissipation effect.

[0017] Furthermore, a sealing gasket is provided at the gap between the first noise reduction housing and the second noise reduction housing, which can effectively improve the sealing effect.

[0018] This utility model provides a shock absorber noise reduction structure, which has the following advantages:

[0019] The arc-shaped locking plates on the upper sides of the No. 1 and No. 2 noise reduction housings can be inserted into the positioning slots of the upper support, and the lower arc-shaped locking plates can be placed on the outer wall of the shock absorber body. The limiting discs on both sides can limit the lower arc-shaped locking plates. The connecting slots are fitted onto the outer walls of the No. 1 and No. 2 noise reduction housings, and the screws can be used for positioning after corresponding to the screw slots. This allows the No. 1 and No. 2 noise reduction housings to be combined into a cylindrical structure and fitted onto the shock absorber body. This connection structure is easy to disassemble and replace, and it can be positioned with four screws, making disassembly and assembly more convenient.

[0020] The upper support, No. 1 noise reduction shell, and No. 2 noise reduction shell are all equipped with multiple sound-absorbing layers. The sound insulation cotton layer is closest to the shock absorber and absorbs high-frequency noise. The polyurethane foam layer has a sandwich structure and is used for mid-frequency noise attenuation. The glass fiber layer is the outer covering and absorbs low-frequency noise, thus achieving multi-frequency noise absorption and further improving the noise reduction effect.

[0021] The dustproof telescopic sleeve can wrap around the outer wall of the shock absorber body, thereby protecting the sliding section of the noise reduction housing and preventing the sliding section from aging and generating additional noise.

[0022] This type of shock absorber noise reduction structure can effectively reduce mixed high-frequency and low-frequency noise, thereby further improving the noise reduction effect. The overall noise reduction housing is easy to disassemble and assemble, thus facilitating maintenance. It is equipped with a retractable protective shell to prevent the exposed parts of the shock absorber from aging and wearing, thereby effectively improving service life and preventing aging from generating additional noise.

[0023] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it according to the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. The specific implementation methods of this utility model are given in detail in the following embodiments and their accompanying drawings. Attached Figure Description

[0024] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0025] Figure 1 This is a schematic diagram of a shock absorber noise reduction structure provided in an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the disassembled state of a first noise reduction shell and a second noise reduction shell in a shock absorber noise reduction structure according to an embodiment of the present invention.

[0027] Figure 3 A front view of a shock absorber noise reduction structure provided in an embodiment of this utility model;

[0028] Figure 4 A top-view diagram showing the splitting of a noise reduction shell No. 1 and a noise reduction shell No. 2 in a shock absorber noise reduction structure according to an embodiment of the present utility model;

[0029] Figure 5 This is a top view schematic diagram of the noise reduction shell No. 1 and noise reduction shell No. 2 in a shock absorber noise reduction structure provided in an embodiment of the present utility model.

[0030] The attached diagram lists the components represented by each number as follows:

[0031] 1. Shock absorber body; 2. Piston rod; 3. Shock absorber spring; 4. Upper support; 5. Lower support; 6. No. 1 noise reduction housing; 7. No. 2 noise reduction housing; 8. Connecting slot; 9. Arc-shaped retaining plate; 10. Positioning slot; 11. Limiting disc; 12. Rubber pad; 13. Sound insulation cotton layer; 14. Polyurethane foam layer; 15. Fiberglass layer; 16. Heat dissipation fins; 17. Dust filter; 18. Bottom connecting plate; 19. Dustproof telescopic sleeve; 20. Connecting strip; 21. Sealing gasket. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-5The principles and features of this utility model are described below. The examples given are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description and claims. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0033] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0035] like Figure 1-5 As shown, a noise reduction structure for a shock absorber includes a shock absorber body 1, an upper support 4, a lower support 5, a first noise reduction shell 6, a second noise reduction shell 7, a connecting slot 8, a dustproof telescopic sleeve 19, and multiple sound-absorbing layers. The shock absorber body 1 is provided with a piston rod 2 and a shock-absorbing spring 3. The piston rod 2 is fixedly connected to the upper support 4, and the shock absorber body 1 is fixedly connected to the lower support 5. The first noise reduction shell 6 and the second noise reduction shell 7 can be connected by connecting slot 8 and screws. The first noise reduction shell 6 and the second noise reduction shell 7 can be combined into a cylindrical structure. The cylindrical structure encloses the piston rod 2 and the shock-absorbing spring 3. The upper support 4, the first noise reduction shell 6, and the second noise reduction shell 7 are all provided with multiple sound-absorbing layers.

[0036] The multi-layer sound-absorbing layer includes a sound-insulating cotton layer 13, a polyurethane foam layer 14, and a glass fiber layer 15. The sound-insulating cotton layer 13 is the inner layer, the polyurethane foam layer 14 is the middle layer, and the glass fiber layer 15 is the outer layer, which is placed on the outer wall of the upper support 4, the first noise-reducing shell 6, and the second noise-reducing shell 7.

[0037] Preferably, the shock absorber body 1 is fixedly installed with a bottom connecting plate 18. The dustproof telescopic sleeve 19 can be connected to the bottom connecting plate 18, the first noise reduction housing 6, and the second noise reduction housing 7 by screws. The dustproof telescopic sleeve 19 can be fitted onto the outer wall of the cylinder of the shock absorber body 1. The dustproof telescopic sleeve 19 wraps around the gap of the two side limiting discs 11, so that the sliding grooves of the first noise reduction housing 6 and the second noise reduction housing 7 can be protected, thereby preventing aging and wear and causing additional noise during sliding.

[0038] Preferably, the bottom connecting plate 18 has evenly spaced heat dissipation holes, and a dust filter 17 is installed inside the heat dissipation holes. The heat dissipation holes at the bottom of the bottom connecting plate 18, together with the dust filter 17, prevent dust from entering while allowing heat to dissipate naturally.

[0039] Preferably, both the first noise-reducing housing 6 and the second noise-reducing housing 7 are fitted with connecting strips 20 corresponding to the connecting slots 8. The connecting slots 8 have through holes, and the connecting strips 20 have screw slots corresponding to the through holes. The connecting slots 8 are fitted onto the connecting strips 20 and then connected by screws for positioning. This allows the first noise-reducing housing 6 and the second noise-reducing housing 7 to be stably connected, and the positioning is achieved with just four screws, making disassembly and assembly more convenient.

[0040] Preferably, both the first noise reduction housing 6 and the second noise reduction housing 7 are provided with arc-shaped retaining plates 9, and the upper support 4 is provided with positioning slots 10 corresponding to the arc-shaped retaining plates 9. The arc-shaped retaining plates 9 can be positioned by being inserted into the positioning slots 10.

[0041] Preferably, the shock absorber body 1 is fixedly installed with a limiting disc 11. There are two limiting discs 11. An arc-shaped clamping plate 9 is fixedly installed with a rubber pad 12. The arc-shaped clamping plate 9 with the rubber pad 12 can slide at the gap between the two limiting discs 11, so that the first noise reduction housing 6 and the second noise reduction housing 7 can slide on the outer wall of the shock absorber body 1 as the shock absorber body 1 extends and retracts.

[0042] Preferably, heat dissipation fins 16 are evenly fixedly installed on the first noise reduction housing 6 and the second noise reduction housing 7, thereby improving the heat dissipation effect.

[0043] Preferably, a sealing gasket 21 is provided at the gap between the first noise reduction housing 6 and the second noise reduction housing 7, which can effectively improve the sealing effect.

[0044] The specific working principle and usage method of this utility model are as follows: The arc-shaped clamping plate 9 on the upper side of the first noise-reducing housing 6 and the second noise-reducing housing 7 can be inserted into the positioning groove 10 of the upper support 4, and the lower arc-shaped clamping plate 9 can be placed on the outer wall of the shock absorber body 1. The limiting discs 11 on both sides can limit the lower arc-shaped clamping plate 9. A sealing gasket 21 is provided at the gap of the connecting strip 20 of the first noise-reducing housing 6 and the second noise-reducing housing 7. After the first noise-reducing housing 6 and the second noise-reducing housing 7 are combined, the connecting groove 8 is fitted onto the outer wall, and the screw can be used for positioning after corresponding to the screw groove, so that the first noise-reducing housing 6 and the second noise-reducing housing 7 can be combined into a cylindrical structure sleeve. Installed on the main body 1 of the shock absorber, the upper support 4, the first noise reduction shell 6, and the second noise reduction shell 7 are all equipped with multiple sound-absorbing layers. The sound insulation cotton layer 13 (thickness 3-5mm) is closest to the shock absorber and absorbs high-frequency noise. The polyurethane foam layer 14 (density 30kg / m³) is a sandwich structure used for mid-frequency noise attenuation. The glass fiber layer 15 (thickness 2mm) is the outer covering and absorbs low-frequency noise, thus achieving multi-frequency noise absorption and further improving the noise reduction effect. The dustproof telescopic sleeve 19 can wrap the outer wall of the main body 1 of the shock absorber, thereby protecting the sliding section of the noise reduction shell and preventing the aging of the sliding section from generating additional noise.

[0045] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A shock absorber noise reduction structure, comprising a shock absorber body (1), an upper support (4), a lower support (5), a first noise reduction shell (6), a second noise reduction shell (7), a connecting slot (8), a dustproof telescopic sleeve (19), and multiple sound-absorbing layers, characterized in that: The shock absorber body (1) is provided with a piston rod (2) and a shock absorber spring (3). The piston rod (2) is fixedly connected to the upper support (4). The shock absorber body (1) is fixedly connected to the lower support (5). The first noise reduction shell (6) and the second noise reduction shell (7) can be connected by connecting slot (8) and screws. The first noise reduction shell (6) and the second noise reduction shell (7) can be combined into a cylindrical structure. The cylindrical structure encloses the piston rod (2) and the shock absorber spring (3). The upper support (4), the first noise reduction shell (6), and the second noise reduction shell (7) are all provided with multiple layers of sound absorption. The multi-layer sound-absorbing layer includes a sound-insulating cotton layer (13), a polyurethane foam layer (14), and a glass fiber layer (15). The sound-insulating cotton layer (13) is the inner layer, the polyurethane foam layer (14) is the middle layer, and the glass fiber layer (15) is the outer layer placed on the outer wall of the upper support (4), the first noise-reducing shell (6), and the second noise-reducing shell (7).

2. The shock absorber noise reduction structure according to claim 1, characterized in that, The shock absorber body (1) is fixedly installed with a bottom connecting plate (18), and the dustproof telescopic sleeve (19) can be connected to the bottom connecting plate (18), the first noise reduction shell (6), and the second noise reduction shell (7) by screws.

3. The shock absorber noise reduction structure according to claim 2, characterized in that, The bottom connecting plate (18) is evenly provided with heat dissipation holes, and a dust filter (17) is installed in the heat dissipation holes.

4. The shock absorber noise reduction structure according to claim 1, characterized in that, Both the first noise reduction housing (6) and the second noise reduction housing (7) are equipped with connecting strips (20) corresponding to the connecting slots (8). The connecting slots (8) have through holes, and the connecting strips (20) have screw slots corresponding to the through holes.

5. The shock absorber noise reduction structure according to claim 1, characterized in that, Both the first noise reduction housing (6) and the second noise reduction housing (7) are provided with arc-shaped card plates (9), and the upper support (4) is provided with positioning slots (10) corresponding to the arc-shaped card plates (9). The arc-shaped card plates (9) are fixedly installed with rubber pads (12).

6. The shock absorber noise reduction structure according to claim 1, characterized in that, The shock absorber body (1) is fixedly installed with a limiting disc (11), and there are two limiting discs (11).

7. The shock absorber noise reduction structure according to claim 1, characterized in that, The first noise reduction housing (6) and the second noise reduction housing (7) are uniformly fixed with heat dissipation fins (16).

8. The vibration damper noise reduction structure according to claim 1, characterized in that, A sealing gasket (21) is provided at the gap between the first noise reduction housing (6) and the second noise reduction housing (7).

Images