A dust cover for car shock absorbers

Abstract

This utility model relates to the field of automotive parts technology and discloses a dust cover for an automotive shock absorber, including a first outer cover and a second outer cover. The second outer cover is disposed at the lower end of the first outer cover. A ventilator is fixedly connected to the lower end of the first outer cover, and the upper end of the second outer cover is fixedly connected to the lower end of the ventilator. A ventilation mechanism is provided inside the ventilator. This utility model allows air to enter the device after being filtered through a first filter group and a second filter group when the device is compressed or stretched, effectively preventing dust from being sucked in and contaminating the lubricating oil exposed on the shock absorber surface.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to a dust cover for automotive shock absorbers. Background Technology

[0002] The dust cover for a car shock absorber is an important component of the car shock absorber assembly. It is used to fit on the piston rod of the car shock absorber and has the effect of dust protection. It is usually made of elastic bellows. The two ends of the dust cover are constrained, and the middle part can extend and retract with the shock absorber and spring.

[0003] A search revealed that Chinese Patent Publication No. CN221811008U discloses a dust cover for an automotive shock absorber, comprising an outer cover body. An inner folded tube is disposed inside the outer cover body, and an annular connector is fixedly connected to the outer side of the inner folded tube. The side of the annular connector away from the inner folded tube is fixedly connected to the inner wall of the outer cover body. Four mounting slots are provided inside the top and bottom of the outer cover body. This device, by incorporating an inner folded tube inside the outer cover body and fixing it to the outer cover body via an annular connector, makes the entire dust cover structure more stable and better able to withstand external impacts and vibrations. Simultaneously, two sponge balls (one and two) on the annular connector body further absorb external impacts and vibrations, reducing the vibration transmitted to the shock absorber and thus improving ride comfort. The dust cover is quickly installed and removed by using built-in threaded sleeves within the mounting slots and in conjunction with mounting bolts.

[0004] However, in the existing technology, the inside of the dust cover is connected to the outside atmosphere. When the wheels are running, the dust raised by the dust cover will be sucked in when the dust cover is extended, contaminating the lubricating oil exposed on the surface of the shock absorber. Although the dust cover can block most of the dust, a small amount of dust that is sucked in and accumulates over time will also significantly affect the working stability and service life of the shock absorber. A solution is proposed to solve the problems mentioned in the background technology. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a dust cover for automobile shock absorbers, which aims to improve the communication between the inside of the dust cover and the outside atmosphere. Dust raised when the wheels are running will be sucked in when the dust cover is extended, contaminating the lubricating oil exposed on the surface of the shock absorber. Although the dust cover can block most of the dust, a small amount of dust that is sucked in and accumulates over time will also significantly affect the working stability and service life of the shock absorber.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: it includes a first outer cover and a second outer cover, the second outer cover is disposed at the lower end of the first outer cover, a ventilator is fixedly connected to the lower end of the first outer cover, the upper end of the second outer cover is fixedly connected to the lower end of the ventilator, and a ventilating mechanism is provided inside the ventilator.

[0007] As a further description of the above technical solution: When the No. 1 outer cover and the No. 2 outer cover deform, as the No. 1 outer cover and the No. 2 outer cover are stretched due to compression, the air will enter the ventilator through the No. 1 filter screen group. The air entering the ventilator can be filtered by the No. 1 filter screen group so that the dust can be blocked outside the ventilator. The air will then enter the interior of the inner cover through the No. 2 filter screen group set on the side of the ventilator. When the No. 1 outer cover and the No. 2 outer cover are compressed and deformed again, the gas in the gap between the No. 1 outer cover, the No. 2 outer cover and the inner cover will enter the ventilator through the vent holes and be output through the No. 1 filter screen group.

[0008] Preferably, the air-permeable mechanism includes a first filter screen group, the outer surface of which is snapped into the periphery of the air-permeable cylinder.

[0009] As a further description of the above technical solution: the No. 1 filter screen can filter the air entering the air vent to prevent dust from entering.

[0010] Preferably, a second filter screen is snapped into the inside of the ventilator, and ventilator holes are provided on both the upper and lower sides of the ventilator.

[0011] As a further description of the above technical solution: the second filter group can filter the air entering the inner cover again, further improving the filtration effect of the device.

[0012] Preferably, both the first outer cover and the second outer cover are provided with inner covers, and one end of each inner cover is fixedly connected to both sides of the ventilator.

[0013] As a further description of the above technical solution: by setting an inner cover inside the No. 1 outer cover and the No. 2 outer cover, the structural strength of the No. 1 outer cover and the No. 2 outer cover can be effectively improved, and their service life can be increased.

[0014] Preferably, reinforcing rods are uniformly fixedly connected to the outer surfaces of the two inner covers, and the other ends of the two reinforcing rods are fixedly connected to the inner surfaces of the first outer cover and the second outer cover, respectively.

[0015] As a further description of the above technical solution: the reinforcing rod assembly can be used to enhance the connection between the No. 1 outer cover, the No. 2 outer cover, and the inner cover.

[0016] Preferably, the upper end of the first outer cover is fixedly connected to a first connecting end, and the lower end of the second outer cover is fixedly connected to a second connecting end.

[0017] As a further description of the above technical solution: Connection No. 1 and Connection No. 2 are used to be installed on both sides of the shock absorber device.

[0018] Preferably, elastic strips are fixedly connected to the outer surfaces of both the first outer cover and the second outer cover.

[0019] As a further description of the above technical solution: its elastic strip can assist the expansion of the No. 1 outer cover and the No. 2 outer cover when compressed, and enhance the external structural strength when the No. 1 outer cover and the No. 2 outer cover are expanded, so as to avoid them from breaking due to excessive expansion.

[0020] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0021] In this invention, when the device is compressed or stretched, the air can be filtered through the first and second filter groups before entering the device, which can effectively prevent dust from being sucked in and contaminating the lubricating oil exposed on the surface of the shock absorber. Attached Figure Description

[0022] Figure 1 This is a perspective view of a dust cover for an automotive shock absorber proposed in this utility model;

[0023] Figure 2 This is a three-dimensional structural cross-sectional view of the outer and inner covers of a dust cover for an automobile shock absorber proposed in this utility model.

[0024] Figure 3 This is a three-dimensional cross-sectional view of the first outer cover of a dust cover for an automobile shock absorber proposed in this utility model.

[0025] Figure 4 This is a three-dimensional structural diagram of the vent cylinder part in the dust cover of an automobile shock absorber proposed in this utility model;

[0026] Figure 5 This is a three-dimensional cross-sectional view of the ventilated section in a dust cover for an automotive shock absorber, as proposed in this utility model.

[0027] Legend:

[0028] 1. Outer cover No. 1; 2. Elastic strip; 3. Connecting end No. 1; 4. Ventilation tube; 5. Filter screen group No. 1; 6. Outer cover No. 2; 7. Connecting end No. 2; 8. Inner cover; 9. Reinforcing rod; 10. Filter screen group No. 2; 11. Ventilation hole. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Reference Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, one embodiment of this utility model includes a first outer cover 1 and a second outer cover 6. The second outer cover 6 is disposed at the lower end of the first outer cover 1. A ventilator 4 is fixedly connected to the lower end of the first outer cover 1. The upper end of the second outer cover 6 is fixedly connected to the lower end of the ventilator 4. A ventilator mechanism is provided inside the ventilator 4. The ventilator mechanism includes a first filter screen group 5. The outer surface of the first filter screen group 5 is snapped onto the periphery of the ventilator 4. A second filter screen group 10 is snapped onto the inside of the ventilator 4. Ventilation hole groups 11 are provided on both the upper and lower sides of the ventilator 4.

[0031] In this embodiment, when the first outer cover 1 and the second outer cover 6 deform, as they stretch under pressure, air passes through the first filter group 5 and enters the ventilator 4. The air is filtered by the first filter group 5, preventing dust from entering the ventilator 4. The air then enters the inner cover 8 through the second filter group 10 located on the side of the ventilator 4. When the first outer cover 1 and the second outer cover 6 are compressed and deformed again, the gas in the gap between the first outer cover 1, the second outer cover 6 and the inner cover 8 enters the ventilator 4 through the vent hole 11 and exits through the first filter group 5. This method allows the air to enter the device after being filtered by the first filter group 5 and the second filter group 10 when the device is compressed or stretched, effectively preventing dust from being sucked in and contaminating the lubricating oil exposed on the surface of the shock absorber.

[0032] Example 2, as Figures 1 to 3 As shown, both the inner cover 1 and the inner cover 6 are provided with inner covers 8. One end of each inner cover 8 is fixedly connected to both sides of the ventilation cylinder 4. Reinforcing rod groups 9 are evenly fixedly connected to the outer surfaces of the two inner covers 8. The other ends of the two reinforcing rod groups 9 are fixedly connected to the inner surfaces of the inner cover 1 and the inner cover 6, respectively. The upper end of the inner cover 1 is fixedly connected to the first connecting end 3, and the lower end of the inner cover 6 is fixedly connected to the second connecting end 7. Elastic strips 2 are fixedly connected to the outer surfaces of both the inner cover 1 and the outer surfaces of the inner cover 6.

[0033] In this embodiment, a reinforcing rod 9 is provided between the first outer cover 1, the second outer cover 6, and the inner cover 8. The reinforcing rod 9 can be used to connect the first outer cover 1, the second outer cover 6, and the inner cover 8, making the connection between the various components more stable and improving the durability of the device. At the same time, an elastic strip 2 is provided on the outside of the first outer cover 1 and the second outer cover 6. The elastic strip 2 can assist the first outer cover 1 and the second outer cover 6 in stretching when compressed, and enhance the external structural strength when the first outer cover 1 and the second outer cover 6 stretch, so as to avoid excessive stretching and breakage.

[0034] Working principle: When outer covers 1 and 6 deform, as they extend due to compression, air passes through filter group 5 into the ventilator 4. The air is filtered by filter group 5, preventing dust from entering the ventilator 4, and then enters the inner cover 8 through filter group 10 located on the side of the ventilator 4. When outer covers 1 and 6 are compressed and deformed again, gas in the gap between them and the inner cover 8 enters the ventilator 4 through vent hole 11 and exits through filter group 5. This method allows the device to function properly when compressed or stretched. The air can be filtered through the No. 1 filter group 5 and the No. 2 filter group 10 before entering the device, which can effectively prevent dust from being sucked in and contaminating the lubricating oil exposed on the surface of the shock absorber. By setting a reinforcing rod 9 between the No. 1 outer cover 1, the No. 2 outer cover 6 and the inner cover 8, the connection between the various components is more stable and the durability of the device is improved. At the same time, an elastic strip 2 is set on the outside of the No. 1 outer cover 1 and the No. 2 outer cover 6. The elastic strip 2 can assist the No. 1 outer cover 1 and the No. 2 outer cover 6 in stretching when compressed, and enhance the external structural strength when the No. 1 outer cover 1 and the No. 2 outer cover 6 stretch, thus preventing them from breaking due to excessive stretching.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dust cover for an automotive shock absorber, comprising a first outer cover (1) and a second outer cover (6), characterized in that: The second outer cover (6) is located at the lower end of the first outer cover (1). The lower end of the first outer cover (1) is fixedly connected to a ventilator (4). The upper end of the second outer cover (6) is fixedly connected to the lower end of the ventilator (4). The ventilator (4) is equipped with a ventilation mechanism inside.

2. The dust cover for an automotive shock absorber according to claim 1, characterized in that: The ventilation mechanism includes a first filter group (5), the outer surface of which is snapped into the periphery of the ventilation cylinder (4).

3. A dust cover for an automotive shock absorber according to claim 2, characterized in that: The air vent (4) has a second filter screen group (10) inside, and air vent groups (11) are opened on both the upper and lower sides of the air vent (4).

4. The dust cover for an automotive shock absorber according to claim 1, characterized in that: Both the inner cover (8) and the inner cover (6) are provided with inner covers (8), and one end of each inner cover (8) is fixedly connected to the two sides of the ventilator (4).

5. A dust cover for an automotive shock absorber according to claim 4, characterized in that: The outer surfaces of the two inner covers (8) are uniformly fixedly connected with reinforcing rod groups (9), and the other ends of the two reinforcing rod groups (9) are fixedly connected to the inner surfaces of the first outer cover (1) and the second outer cover (6), respectively.

6. A dust cover for an automotive shock absorber according to claim 5, characterized in that: The upper end of the first outer cover (1) is fixedly connected to the first connecting end (3), and the lower end of the second outer cover (6) is fixedly connected to the second connecting end (7).

7. A dust cover for an automotive shock absorber according to claim 6, characterized in that: Both the outer surface of the first outer cover (1) and the outer surface of the second outer cover (6) are fixedly connected with elastic strips (2).

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