Automobile universal joint rubber dustproof device

Abstract

The utility model relates to a kind of automobile universal joint rubber dustproof devices, belong to automobile universal joint rubber dustproof technical field.The automobile universal joint rubber dustproof device, including: rubber sleeve;Encryption mechanism, the encryption mechanism includes the sealing sleeve slidingly connected in the inside of rubber sleeve, the inner wall of the sealing sleeve is fixedly connected with bolt, the surface lower end of the bolt is threadedly connected with nut, the end of the bolt is equipped with antiskid pad, the inner wall of the nut is slidingly connected with clamping block;By clamping block sliding into nut and bolt, realized that nut is initially locked on bolt, by injecting appropriate gas into one-way air pipe, and then make appropriate gas surge into gas groove and push rubber block to move up, so that clamping block is locked in nut and bolt, realized that nut is stably locked on bolt, and then ensure that rubber sleeve is tightly installed on automobile universal joint, so as to ensure the dustproof effect to automobile universal joint.

Description

Technical Field

[0001] This utility model relates to the field of automotive universal joint rubber dustproof technology, and in particular to an automotive universal joint rubber dustproof device. Background Technology

[0002] Automotive universal joints, also known as universal couplings, are key components of automotive transmission systems. They enable reliable power transmission even when the angle and position of the two shafts are constantly changing. To prevent impurities such as dust, mud, and moisture from entering the universal joint, a corrugated rubber sleeve is usually installed on the surface of the universal joint, thereby reducing the risk of damage caused by increased friction.

[0003] A search revealed that the Chinese patent "A Constant Velocity Universal Joint Drive Shaft Assembly" (authorization announcement number CN219452813U) utilizes a combination of a slot, pull ring, push handle, push block, locking block, telescopic spring, fixing plate, limit groove, limit ring, limit block, return spring, and rubber block to facilitate the removal and installation of dust covers on universal joints. This effectively improves the efficiency of dust cover replacement for workers, achieving time-saving, labor-saving, and convenient results.

[0004] In the aforementioned application, the vibration force generated by the automotive universal joint during operation is easily transmitted to the dust cover, telescopic spring, and return spring, which in turn can easily cause the telescopic spring and return spring to elastically expand and contract, thereby affecting the sealing performance of the dust cover installed on the automotive universal joint and affecting the dustproof effect of the automotive universal joint. Utility Model Content

[0005] Therefore, it is necessary to provide a rubber dustproof device for automotive universal joints to address the problem of poor sealing when dust covers are installed on automotive universal joints.

[0006] Includes: a rubber sleeve; an encryption mechanism, the encryption mechanism including a sealing sleeve slidably connected inside the rubber sleeve, a bolt fixedly connected to the inner wall of the sealing sleeve, a nut threadedly connected to the lower end of the bolt, an anti-slip pad provided at the end of the bolt, a locking block slidably connected to the inner wall of the nut, an air groove formed in the inner wall of the locking block, a rubber block slidably connected to the inner wall of the air groove, and a one-way air tube fixedly connected to the inner wall of the locking block, the top end of the one-way air tube penetrating and extending to the inner wall of the air groove.

[0007] In one embodiment, a limiting block is slidably connected to the inner wall of the card block, and the surface of the limiting block is slidably connected to the lower end of the inner wall of the rubber block.

[0008] In one embodiment, a spring is fixedly connected to the inner bottom wall of the air groove, and the top end of the spring is fixedly connected to the bottom of the rubber block.

[0009] In one embodiment, the surface of the one-way air tube is threaded with two rubber caps.

[0010] In one embodiment, two elastic pads are fixedly connected to the surface of the one-way air tube, with the ends of the elastic pads contacting one end of the rubber cap. The elastic pads increase the resistance to the rubber cap detaching from the one-way air tube, ensuring that the rubber cap is tightly installed on the one-way air tube, thereby preventing gas in the air groove from leaking out through the one-way air tube and ensuring that one side of the rubber block stably abuts against the surface of the nut.

[0011] In one embodiment, the surface of the locking block is slidably connected to the lower end of the inner wall of the bolt, and the bottom end of the anti-slip pad contacts the surface of the rubber sleeve.

[0012] In one embodiment, a driven block is fixedly connected to one side of the rubber block, and the surface of the driven block is slidably connected to the inner wall of the card block.

[0013] In one embodiment, sliders are fixedly connected to both sides of the limiting block, and the surfaces of the sliders are slidably connected to the inner walls of the card block and the rubber block in sequence.

[0014] Beneficial effects 1. By sliding the locking block into the nut and bolt, the nut is initially locked onto the bolt. By injecting an appropriate amount of gas into the one-way air pipe, an appropriate amount of gas flows into the air groove and pushes the rubber block upward, thereby locking the locking block into the nut and bolt. This ensures that the nut is stably locked onto the bolt, thus ensuring that the rubber sleeve is tightly installed on the automotive universal joint, thereby ensuring the dustproof effect of the automotive universal joint. 2. The elastic force of the spring pushes the rubber block to move automatically upward in the air groove, so that one side of the rubber block abuts against the surface of the nut. The limit block slides into the rubber block and the locking block to lock the rubber block, ensuring that the nut is stably locked on the bolt. This ensures that the rubber sleeve is tightly installed on the automotive universal joint, thus ensuring the dustproof effect of the automotive universal joint. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the rubber sleeve of this utility model; Figure 3 This utility model Figure 2 Enlarged view of point A in the middle; Figure 4 This utility model Figure 2 Enlarged view of point B in the middle; Figure 5 This utility model Figure 2 Enlarged view of point C in the middle.

[0017] Figure label: 100. Rubber sleeve; 200. Encryption mechanism; 201. Bolt; 202. Sealing sleeve; 203. Nut; 204. Anti-slip pad; 205. Locking block; 206. Rubber block; 207. One-way air tube; 208. Air groove; 209. Limiting block; 210. Rubber cap; 211. Elastic pad; 212. Slider; 213. Driven block; 214. Spring. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0019] The following is combined with Figures 1-5 This invention describes a rubber dustproof device for automotive universal joints.

[0020] In one embodiment, an automotive universal joint rubber dustproof device includes: a rubber sleeve 100; and an encryption mechanism 200. The encryption mechanism 200 includes a sealing sleeve 202 slidably connected inside the rubber sleeve 100. A bolt 201 is fixedly connected to the inner wall of the sealing sleeve 202. A nut 203 is threadedly connected to the lower end of the surface of the bolt 201. An anti-slip pad 204 is provided at the end of the bolt 201. A locking block 205 is slidably connected to the inner wall of the nut 203. An air groove 208 is opened on the inner wall of the locking block 205. A rubber block 206 is slidably connected to the inner wall of the air groove 208. A one-way air pipe 207 is fixedly connected to the inner wall of the locking block 205. The top end of the one-way air pipe 207 penetrates and extends to the inner wall of the air groove 208.

[0021] It should be noted that: the rubber sleeve 100 is fitted on the surface of the automotive universal joint, and the surface of the sealing sleeve 202 is slidably connected to the inner wall of the automotive universal joint. The automotive universal joint model can be Chery J00-2203010, which is a relatively mature device in the current technology. The specific model can be selected according to actual needs.

[0022] The one-way air tube 207 includes an air tube, an exhaust tube, and a one-way valve. The surface of the air tube is fixedly connected to the inner wall of the clamp 205, and the bottom end of the exhaust tube is fixedly connected to the inner wall of the air tube. The surface of the one-way valve is embedded in the surface of the air tube. The one-way valve is used to prevent the gas inside the air tank 208 from being discharged through the air tube.

[0023] In this embodiment, when dust prevention is required for the automotive universal joint, a rubber sleeve 100 adapted to the automotive universal joint model is fitted onto the surface of the automotive universal joint. An anti-slip pad 204 is placed against a suitable position on the rubber sleeve 100. A sealing sleeve 202 is then slid into the anti-slip pad 204, the rubber sleeve 100, and the inner wall of the automotive universal joint in sequence. An electric wrench is used to thread the nut 203 onto the surface of the bolt 201, so that the top of the nut 203 abuts against the surface of the rubber sleeve 100, thus installing the rubber sleeve 100. On the automotive universal joint, the locking block 205 is slid into the nuts 203 one after another. The air supply end of the micro air pump is fitted into the one-way air tube 207 and gas is injected into the one-way air tube 207. After a certain amount of gas is injected into the air groove 208, it will push the rubber block 206 to move upward in the air groove 208, so that one side of the rubber block 206 abuts against the surface of the nut 203, locking the nut 203 onto the bolt 201, thereby making the rubber sleeve 100 tightly installed on the automotive universal joint.

[0024] like Figure 4 As shown, a limiting block 209 is slidably connected to the inner wall of the locking block 205. The surface of the limiting block 209 is slidably connected to the lower end of the inner wall of the rubber block 206. A spring 214 is fixedly connected to the inner bottom wall of the air groove 208. The top end of the spring 214 is fixedly connected to the bottom of the rubber block 206. The surface of the locking block 205 is slidably connected to the lower end of the inner wall of the bolt 201. The bottom end of the anti-slip pad 204 contacts the surface of the rubber sleeve 100. A driven block 213 is fixedly connected to one side of the rubber block 206. The surface of the driven block 213 is slidably connected to the inner wall of the locking block 205. Slider 212 is fixedly connected to both sides of the limiting block 209. The surface of the slider 212 is slidably connected to the inner walls of the locking block 205 and the rubber block 206 in sequence.

[0025] In this embodiment, after the locking block 205 slides into the nut 203 and the bolt 201 in sequence, the elastic force of the spring 214 pushes the rubber block 206 to move automatically upward in the air groove 208, pushing the limiting block 209, so that the limiting block 209 and the slider 212 slide into the rubber block 206, thereby locking the rubber block 206.

[0026] like Figure 4 As shown, two rubber caps 210 are threadedly connected to the surface of the one-way trachea 207, and two elastic pads 211 are fixedly connected to the surface of the one-way trachea 207. The end of the elastic pad 211 contacts one end of the rubber cap 210.

[0027] In this embodiment, when the rubber sleeve 100 on the automotive universal joint needs to be replaced, pull one of the elastic pads 211 away from the corresponding rubber cap 210, rotate the corresponding rubber cap 210 away from the one-way air pipe 207, so that the top of the one-way air pipe 207 is unobstructed, and the gas in the air groove 208 is discharged through the one-way air pipe 207. Pull the limiting block 209 to move laterally away from the rubber block 206, push the driven block 213 down, so that the rubber block 206 is completely retracted into the air groove 208. Pull the locking block 205 away from the nut 203 and bolt 201. Use an electric wrench to move the nut 203 away from the bolt 201. Pull the bolt 201 up, so that the sealing sleeve 202 is away from the rubber sleeve 100 and the automotive universal joint. Pull the rubber sleeve 100 on the automotive universal joint to separate it, so that the rubber sleeve 100 on the automotive universal joint can be replaced.

[0028] Working principle: A rubber sleeve 100, compatible with the automotive universal joint model, is fitted onto the surface of the universal joint. An anti-slip pad 204 is placed against the rubber sleeve 100 at a suitable position. A sealing sleeve 202 is slid into the anti-slip pad 204, the rubber sleeve 100, and the inner wall of the universal joint. An electric wrench is used to thread the nut 203 onto the bolt 201, so that the top of the nut 203 abuts against the surface of the rubber sleeve 100, thus installing the rubber sleeve 100 onto the universal joint. At this point, a retaining block 205 is slid into the nut 203, and the elastic force of the spring 214 pushes the rubber block 206 into the air groove. The inner part of 208 moves upward automatically, pushing the limit block 209, so that the limit block 209 and the slider 212 slide into the rubber block 206, thereby locking the rubber block 206. The air delivery end of the micro air pump is sleeved in the one-way air pipe 207 and gas is injected into the one-way air pipe 207, so that a certain amount of gas is injected into the air groove 208, thereby locking the rubber block 206. The corresponding rubber cap 210 is threaded on the one-way air pipe 207, so that one side of the rubber block 206 abuts against the surface of the nut 203, so that the nut 203 is locked on the bolt 201, thereby making the rubber sleeve 100 tightly on the automobile universal joint.

[0029] It should be noted that the rubber sleeve 100, bolt 201, sealing sleeve 202, nut 203, anti-slip pad 204, one-way air tube 207 and spring 214 mentioned above are all components with relatively mature existing technology. The specific models can be selected according to actual needs, and will not be elaborated here.

[0030] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A rubber dustproof device for automotive universal joints, characterized in that, include: Rubber sleeve (100); The encryption mechanism (200) includes a sealing sleeve (202) slidably connected to the inside of a rubber sleeve (100). A bolt (201) is fixedly connected to the inner wall of the sealing sleeve (202). A nut (203) is threadedly connected to the lower end of the surface of the bolt (201). An anti-slip pad (204) is provided at the end of the bolt (201). A locking block (205) is slidably connected to the inner wall of the nut (203). An air groove (208) is provided on the inner wall of the locking block (205). A rubber block (206) is slidably connected to the inner wall of the air groove (208). A one-way air tube (207) is fixedly connected to the inner wall of the locking block (205). The top end of the one-way air tube (207) penetrates and extends to the inner wall of the air groove (208).

2. The automotive universal joint rubber dustproof device according to claim 1, characterized in that, The inner wall of the card block (205) is slidably connected to a limiting block (209), and the surface of the limiting block (209) is slidably connected to the lower end of the inner wall of the rubber block (206).

3. The automotive universal joint rubber dustproof device according to claim 1, characterized in that, A spring (214) is fixedly connected to the inner bottom wall of the air groove (208), and the top end of the spring (214) is fixedly connected to the bottom of the rubber block (206).

4. The automotive universal joint rubber dustproof device according to claim 1, characterized in that, The surface of the one-way air tube (207) is threaded with two rubber caps (210).

5. The automotive universal joint rubber dustproof device according to claim 1, characterized in that, Two elastic pads (211) are fixedly connected to the surface of the one-way air tube (207), and the end of the elastic pad (211) contacts one end of the rubber cap (210).

6. The automotive universal joint rubber dustproof device according to claim 1, characterized in that, The surface of the card block (205) is slidably connected to the lower end of the inner wall of the bolt (201), and the bottom end of the anti-slip pad (204) contacts the surface of the rubber sleeve (100).

7. The automotive universal joint rubber dustproof device according to claim 1, characterized in that, A driven block (213) is fixedly connected to one side of the rubber block (206), and the surface of the driven block (213) is slidably connected to the inner wall of the locking block (205).

8. The automotive universal joint rubber dustproof device according to claim 2, characterized in that, Both sides of the limiting block (209) are fixedly connected to sliders (212), and the surface of the sliders (212) is slidably connected to the inner wall of the card block (205) and the rubber block (206) in sequence.

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