A detachable dustproof sealing structure for automobile transmission shaft

Abstract

The utility model discloses a detachable automobile transmission axle dustproof sealing structure belongs to the technical field of automobile parts, a detachable automobile transmission axle dustproof sealing structure, including the seal cover main part, the outside of seal cover main part is provided with the integrated mounting hole, the inside of mounting hole is provided with bolt stem, the surface fixed connection of first sealing layer has the thread sleeve, the utility model solves the problem that the existing transmission axle dustproof sealing structure needs to dismantle transmission axle connecting part to replace seal cover, influences maintenance efficiency, is unfavorable to installation work, the utility model adopts the design mode to the transmission axle clamping, and two symmetrical seal cover main parts can be installed in two parts, and the bolt stem drives the thread sleeve and first sealing layer to move, extrudes second sealing layer, makes two seal cover main part support connection stable, and the compact structure is convenient for fixed and dismantled, need not to dismantle and replace automobile transmission axle, is favorable to installation and maintenance overhaul work.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically to a detachable dustproof sealing structure for automotive drive shafts. Background Technology

[0002] The automotive drive shaft consists of a connected drive shaft and a constant velocity joint. A sealing cover acts as a seal between them. The sealing cover has only one layer of seal at the connection between it and the drive shaft, as well as at the connection between it and the constant velocity joint housing. It is secured by a retaining ring. After long-term use, the sealing cover is damaged due to repeated deformation.

[0003] Chinese patent CN204186830U discloses a sealing cover for an automotive driveshaft, comprising a pleated cover body with a smaller left end and a larger right end, and a circular cross-section. The beneficial effects of this patent are: the annular step can fit against the constant velocity joint housing, and the first sealing lip plays a sealing role, which can improve the sealing effect; the arc-shaped concave ring is designed to avoid direct collision with the edge of the constant velocity joint housing during the movement of the cover body, which can prevent the cover body from being damaged by the edge of the constant velocity joint housing, thereby ensuring its service life.

[0004] In actual use, the dustproof sealing structure of the aforementioned patented drive shaft requires disassembling the drive shaft connection to replace the sealing cover, which affects maintenance efficiency and is not conducive to installation work; therefore, it does not meet the existing needs. In response, we have proposed a detachable dustproof sealing structure for automotive drive shafts. Utility Model Content

[0005] The purpose of this utility model is to provide a detachable dustproof sealing structure for automotive drive shafts, which solves the problem in the background art that in actual use, replacing the sealing cover requires disassembling the drive shaft connection part, which affects maintenance efficiency and is not conducive to installation work.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a detachable dustproof sealing structure for automotive drive shafts, comprising a sealing cover body, wherein two sealing cover bodies are provided, a second sealing layer and a first sealing layer are provided between the two sealing cover bodies, an integrally formed mounting hole is provided on the outside of the sealing cover body, a bolt rod is provided inside the mounting hole, and a threaded sleeve is fixedly connected to the surface of the first sealing layer.

[0007] Preferably, the front end of the bolt rod is provided with an integrally formed positioning hole, a bearing sleeve is installed in the second sealing layer, and the bolt rod passes through the bearing sleeve and is rotatably connected to the second sealing layer.

[0008] Preferably, a clamping tube is installed at the upper end of the sealing cover body, the clamping tube is sealed to the sealing cover body by sealant, and a clamping plate is provided at the upper end of the clamping tube.

[0009] Preferably, the first sealing layer and the second sealing layer are respectively embedded inside the two sealing cover bodies and sealed to the sealing cover bodies by sealant, and the first sealing layer and the second sealing layer are sealed together by pressure.

[0010] Preferably, the lower ends of both the first sealing layer and the second sealing layer are provided with limit strips, and the limit strips are sealed to the two sealing cover bodies.

[0011] Preferably, two fixing pipes are provided below the main body of the sealing cover, a locking plate is installed between the two fixing pipes, and a flange half-plate is provided below each of the two fixing pipes. The two flange half-plates and the two fixing pipes are fixedly connected to the vehicle drive shaft through the locking plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] The sealing cover body of this utility model adopts a design that clamps the drive shaft. The two symmetrical sealing cover bodies can be installed separately. The connection and sealing work is achieved by installing a first sealing layer and a second sealing layer between the two sealing cover bodies. During operation, the bolt rod is rotated by operating a wrench. The bolt rod rotates inside the threaded sleeve and is limited by the bearing sleeve. The bolt rod drives the threaded sleeve and the first sealing layer to move, compressing the second sealing layer. This makes the connection between the two sealing cover body supports stable, convenient for fixing and disassembly, and has a compact structure. It does not require the disassembly and replacement of the car drive shaft, which is beneficial for installation, maintenance and repair work. Attached Figure Description

[0014] Figure 1 This is an axonometric view of the front view of this utility model;

[0015] Figure 2 This is an axonometric view of the side of this utility model;

[0016] Figure 3 This utility model Figure 2 Enlarged view of a portion of area A in the middle;

[0017] Figure 4 This is an axonometric view of the present invention viewed from below;

[0018] Figure 5 This is an isometric view of the first and second sealing layers of this utility model from the front.

[0019] Figure 6 This is an isometric view of the first and second sealing layers of this utility model from the rear.

[0020] In the diagram: 1. Sealing cover body; 101. Mounting hole; 102. Bolt rod; 103. Positioning hole; 2. Clamping tube; 201. Clamping plate; 3. First sealing layer; 301. Threaded sleeve; 4. Second sealing layer; 401. Bearing sleeve; 402. Limiting strip; 5. Fixing tube; 501. Flange half disc; 502. Locking plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0022] To address the issue that existing dust seal structures for drive shafts require disassembly of the drive shaft connection points for seal replacement during practical use, thus impacting maintenance efficiency and hindering installation, please refer to... Figure 1 - Figure 6 This embodiment provides the following technical solution:

[0023] A detachable dustproof sealing structure for automotive drive shaft includes a sealing cover body 1, of which two sealing cover bodies 1 are provided. A second sealing layer 4 and a first sealing layer 3 are provided between the two sealing cover bodies 1. An integrally formed mounting hole 101 is provided on the outside of the sealing cover body 1. A bolt rod 102 is provided inside the mounting hole 101. A threaded sleeve 301 is fixedly connected to the surface of the first sealing layer 3. The sealing cover body 1 adopts a design for clamping the drive shaft. The two symmetrical sealing cover bodies 1 can be installed separately.

[0024] The bolt rod 102 has an integrally formed positioning hole 103 at its front end. A bearing sleeve 401 is installed in the second sealing layer 4. The bolt rod 102 passes through the bearing sleeve 401 and is rotatably connected to the second sealing layer 4. During operation, the bolt rod 102 is rotated by operating a wrench. The bolt rod 102 rotates inside the threaded sleeve 301 and is limited by the bearing sleeve 401. The bolt rod 102 drives the threaded sleeve 301 and the first sealing layer 3 to move, compressing the second sealing layer 4. This makes the two sealing cover main bodies 1 brackets stably connected, which is convenient for fixing and disassembly. The structure is compact and does not require the disassembly and replacement of the car drive shaft, which is beneficial for installation and maintenance.

[0025] The first sealing layer 3 and the second sealing layer 4 are respectively embedded inside the two sealing cover bodies 1 and are sealed to the sealing cover bodies 1 by sealant. The first sealing layer 3 and the second sealing layer 4 are connected by pressure sealing. The connection and sealing work is carried out by installing the first sealing layer 3 and the second sealing layer 4 between the two sealing cover bodies 1.

[0026] Limiting strips 402 are provided at the lower ends of the first sealing layer 3 and the second sealing layer 4. The limiting strips 402 are sealed to the two sealing cover bodies 1. The limiting strips 402 keep the overall position of the sealing cover body 1 stable and adapt to the working position for long-term operation.

[0027] Specifically, the sealing cover body 1 adopts a design that clamps the drive shaft. The two symmetrical sealing cover bodies 1 can be installed separately. The connection and sealing work is achieved by installing the first sealing layer 3 and the second sealing layer 4 between the two sealing cover bodies 1. During operation, the bolt rod 102 is rotated by operating the wrench. The bolt rod 102 rotates inside the threaded sleeve 301 and is limited by the bearing sleeve 401. The bolt rod 102 drives the threaded sleeve 301 and the first sealing layer 3 to move, compressing the second sealing layer 4. This makes the connection between the two sealing cover bodies 1 brackets stable, convenient for fixing and disassembly, and has a compact structure. It does not require the disassembly and replacement of the car drive shaft, which is beneficial for installation, maintenance and repair work.

[0028] To address the issue of poor installation stability in existing drive shaft dust seal structures during practical use, which affects long-term operation, please refer to... Figure 1 - Figure 4 This embodiment provides the following technical solution:

[0029] A clamping tube 2 is installed at the upper end of the sealing cover body 1. The clamping tube 2 is sealed to the sealing cover body 1 by sealant. A clamping plate 201 is provided at the upper end of the clamping tube 2. After the clamping tube 2 is inserted into the sealing cover body 1 and fixed, the clamping plate 201 is fastened to the outside of the drive shaft to perform the connection work.

[0030] Two fixing pipes 5 are provided at the bottom of the sealing cover body 1. A locking plate 502 is installed between the two fixing pipes 5, and a flange half-plate 501 is provided at the bottom of each of the two fixing pipes 5. The two flange half-plates 501 and the two fixing pipes 5 are fixedly connected to the automobile drive shaft by the locking plate 502. By covering the lower end of the sealing cover body 1 with the fixing pipes 5, and fastening the bolts with the flange half-plates 501 and the locking plate 502, the structure is stable and fixed to the outside of the drive shaft for installation work, which is convenient for disassembly and assembly.

[0031] Specifically, in use, after the clamping tube 2 is inserted into the inside of the sealing cover body 1 and fixed, the clamping plate 201 is fastened to the outside of the drive shaft to perform the connection work. The fixing tube 5 is covered on the outside of the lower end of the sealing cover body 1, and the bolts are fastened by the flange half plate 501 and the locking plate 502. The structure is stable and fixed to the outside of the drive shaft for installation work, which is convenient for disassembly and assembly.

[0032] Working principle: During use, the connection and sealing work is achieved by installing the first sealing layer 3 and the second sealing layer 4 between the two sealing cover bodies 1. During operation, the bolt rod 102 is rotated by operating the wrench. The bolt rod 102 rotates inside the threaded sleeve 301 and is limited by the bearing sleeve 401. The bolt rod 102 drives the threaded sleeve 301 and the first sealing layer 3 to move, compressing the second sealing layer 4, so that the two sealing cover bodies 1 are stably connected and easy to fix and disassemble. The structure is compact and does not require the disassembly and replacement of the car drive shaft, which is conducive to installation and maintenance. After the clamping tube 2 is inserted into the sealing cover body 1 and fixed, the clamping plate 201 is tightened on the outside of the drive shaft to perform the connection work. The fixing tube 5 is covered on the outside of the lower end of the sealing cover body 1, and the bolts are tightened by the flange half plate 501 and the locking plate 502. The structure is stable and fixed on the outside of the drive shaft for installation work, which is convenient for disassembly and assembly.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A detachable dustproof sealing structure for automotive drive shafts, comprising a sealing cover body (1), characterized in that, The sealing cover body (1) is provided in two parts, and a second sealing layer (4) and a first sealing layer (3) are provided between the two sealing cover bodies (1). An integrally formed mounting hole (101) is provided on the outside of the sealing cover body (1), and a bolt rod (102) is provided inside the mounting hole (101). A threaded sleeve (301) is fixedly connected to the surface of the first sealing layer (3).

2. The detachable dustproof sealing structure for automotive drive shaft according to claim 1, characterized in that, The bolt rod (102) has an integrally formed positioning hole (103) at its front end. A bearing sleeve (401) is installed in the second sealing layer (4). The bolt rod (102) passes through the bearing sleeve (401) and is rotatably connected to the second sealing layer (4).

3. The detachable dustproof sealing structure for automotive drive shafts according to claim 1, characterized in that, The upper end of the sealing cover body (1) is equipped with a clamping tube (2), and the clamping tube (2) is sealed to the sealing cover body (1) by sealant. The upper end of the clamping tube (2) is provided with a clamping plate (201).

4. The detachable dustproof sealing structure for automotive drive shafts according to claim 1, characterized in that, The first sealing layer (3) and the second sealing layer (4) are respectively embedded inside the two sealing cover bodies (1) and are sealed to the sealing cover bodies (1) by sealant. The first sealing layer (3) and the second sealing layer (4) are sealed to each other by pressure.

5. The detachable dustproof sealing structure for automotive drive shafts according to claim 1, characterized in that, The lower ends of the first sealing layer (3) and the second sealing layer (4) are provided with limit strips (402), and the limit strips (402) are sealed to the two sealing cover bodies (1).

6. The detachable dustproof sealing structure for automotive drive shafts according to claim 1, characterized in that, Two fixed pipes (5) are provided below the main body (1) of the sealing cover. A locking plate (502) is installed between the two fixed pipes (5), and a flange half plate (501) is provided below each of the two fixed pipes (5). The two flange half plates (501) and the two fixed pipes (5) are fixedly connected to the automobile drive shaft through the locking plate (502).

Images