Dustproof sealing structure of universal joint

Abstract

The utility model relates to the technical field of universal joints and discloses a universal joint which comprises a first corrugated pipe, one end of the first corrugated pipe is fixedly connected with a first fixing ring, a second corrugated pipe is installed on the side, away from the first corrugated pipe, of the first fixing ring, and the end, close to the first corrugated pipe, of the second corrugated pipe is fixedly connected with a second fixing ring. One universal joint body is horizontally installed in the first fixing ring, the other universal joint body is horizontally installed in the second fixing ring, and a rotating rod is fixedly connected between the two universal joint bodies. According to the universal joint, dustproof treatment on the universal joint body can be completed, dust and silt can be prevented from entering the surface of the universal joint, the service life of the universal joint can be prolonged, the connecting length of the first connecting ring and the second connecting ring can be adjusted according to the length of the first corrugated pipe and the length of the second corrugated pipe, and the universal joint can be well matched with corrugated pipes with different lengths; and the practicability of the universal joint dustproof mechanism is improved.

Description

Technical Field

[0001] This utility model relates to the field of universal joints, and in particular to a dustproof and sealing structure for universal joints. Background Technology

[0002] Universal joints are mechanical components that enable variable-angle power transmission. They are used in locations where the direction of the drive shaft needs to be changed. They are joint components of the universal transmission device in the automotive drive system. With the development of society and economy, automobiles have become an important part of transportation. Automobile drives cannot function without universal joints, and the role of universal joints in automobile drives is crucial. Universal joints are also frequently used in construction machinery.

[0003] Existing universal joints often use sealing rings to prevent dust and dirt from entering the universal joint. However, after long-term vibration and high-load operation, the sealing rings may wear down, allowing dust and dirt to enter the universal joint, thus reducing the lifespan of the universal joint. Therefore, we propose a dustproof sealing structure for universal joints to solve the above problems. Utility Model Content

[0004] This utility model provides a dustproof and sealing structure for a universal joint.

[0005] To solve the above problems, this utility model provides the following technical solution:

[0006] In this technical solution, a first bellows is included, a first fixing ring is fixedly connected to one end of the first bellows, a second bellows is installed on the side of the first fixing ring away from the first bellows, a second fixing ring is fixedly connected to the end of the second bellows close to the first bellows, a universal joint body is horizontally installed inside the first fixing ring, another universal joint body is horizontally installed inside the second fixing ring, and a rotating rod is fixedly connected between the two universal joint bodies.

[0007] In this technical solution, four screws are installed on the outer circular wall of the first fixing ring. The four screws are distributed in a circle. One end of each of the four screws is fixedly connected to one end of the rotating rod. A first nut is fixedly connected to the top of each of the four screws. A second nut is threaded onto each of the four screws. All four second nuts are in contact with the first fixing ring.

[0008] In this technical solution, four additional screws are installed on the outer circular wall of the second fixing ring. The four screws are circumferentially distributed. One end of each of the four screws is fixedly connected to one end of the rotating rod. A first nut is fixedly connected to the top of each of the four screws. A second nut is threaded onto each of the four screws. All four second nuts are in contact with the second fixing ring.

[0009] In this technical solution, a collar is installed between the first corrugated pipe and the second corrugated pipe. Sliding grooves are provided at the top and bottom of both ends of the collar, and the four sliding grooves are symmetrically distributed. Annular grooves are provided at both ends of the collar.

[0010] In this technical solution, the first fixing ring has another annular groove at one end near the collar, and the collar has first sliding strips on both the upper and lower sides at the end near the first corrugated pipe. The two first sliding strips slide on two sliding grooves located at the same end of the collar, and the two first sliding strips are fixedly connected by the same first connecting ring.

[0011] In this technical solution, the second fixing ring has another annular groove at one end near the collar, and the collar has two second slide bars sliding on both the upper and lower sides near the second corrugated pipe. The two second slide bars slide on two slide grooves located at the same end of the collar, and the same second connecting ring is fixedly connected between the two second slide bars.

[0012] In this technical solution, the two ends of the first connecting ring are respectively adapted to two of the annular grooves, one end of the first connecting ring slides inside the collar, and the other end of the first connecting ring slides to one end of the first fixing ring. The two ends of the second connecting ring are respectively adapted to the other two annular grooves, one end of the second connecting ring slides inside the collar, and the other end of the second connecting ring slides to one end of the second fixing ring.

[0013] Compared with the prior art, the present invention has at least the following beneficial effects:

[0014] 1. By using the first and second bellows, multiple screws on the outer circular walls of the first and second fixed rings can be brought into contact with the four sides of the rotating rod. Then, multiple second nuts are tightened until they come into contact with the first and second fixed rings. This completes the dustproof treatment of the universal joint body, prevents dust and mud from entering the surface of the universal joint, and extends the life of the universal joint.

[0015] 2. The set collar allows the first and second connecting rings to slide, ensuring that the first and second corrugated pipes are connected together. The connection length of the first and second connecting rings can be adjusted according to the length of the first and second corrugated pipes, which can well adapt to corrugated pipes of different lengths and improve the practicality of the universal joint dustproof mechanism. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of 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 only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the first slider structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the annular groove structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the slide groove structure of this utility model.

[0022] In the diagram: 1. First bellows; 2. First fixing ring; 3. Second bellows; 4. First nut; 5. Screw; 6. Second nut; 7. Second fixing ring; 8. Collar; 9. First connecting ring; 10. Second connecting ring; 11. Universal joint body; 12. Rotating rod; 13. First slide bar; 14. Second slide bar; 15. Annular groove; 16. Slide groove. Detailed Implementation

[0023] 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 a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model. It is understood that the accompanying drawings are provided for reference and illustration only and are not intended to limit the present utility model. The connection relationships shown in the drawings are only for clear description and do not limit the connection method.

[0024] This utility model provides the following technical solution:

[0025] Example 1:

[0026] Please see Figures 1-5 As shown, this embodiment provides a dustproof sealing structure for a universal joint.

[0027] In this embodiment, a first bellows 1 is included. A first fixing ring 2 is fixedly connected to one end of the first bellows 1. A second bellows 3 is installed on the side of the first fixing ring 2 away from the first bellows 1. A second fixing ring 7 is fixedly connected to the end of the second bellows 3 close to the first bellows 1. A universal joint body 11 is horizontally installed inside the first fixing ring 2. Another universal joint body 11 is horizontally installed inside the second fixing ring 7. A rotating rod 12 is fixedly connected between the two universal joint bodies 11.

[0028] In this embodiment, four screws 5 are installed on the outer circular wall of the first fixing ring 2. The four screws 5 are distributed in a circle. One end of each of the four screws 5 is fixedly connected to one end of the outside of the rotating rod 12. A first nut 4 is fixedly connected to the top of each of the four screws 5. A second nut 6 is threaded onto each of the four screws 5. All four second nuts 6 are in contact with the first fixing ring 2.

[0029] In this embodiment, four additional screws 5 are installed on the outer circular wall of the second fixing ring 7. The four screws 5 are distributed in a circle. One end of each of the four screws 5 is fixedly connected to one end of the outside of the rotating rod 12. A first nut 4 is fixedly connected to the top of each of the four screws 5. A second nut 6 is threaded onto each of the four screws 5. All four second nuts 6 are in contact with the second fixing ring 7.

[0030] In this embodiment, a collar 8 is installed between the first corrugated pipe 1 and the second corrugated pipe 3. Sliding grooves 16 are provided at the top and bottom of both ends of the collar 8. The four sliding grooves 16 are symmetrically distributed. Annular grooves 15 are provided at both ends of the collar 8.

[0031] In this embodiment, the first fixing ring 2 has another annular groove 15 near the end of the collar 8. The collar 8 has first slide bars 13 sliding on both the upper and lower sides near the end of the first corrugated pipe 1. The two first slide bars 13 slide on two slide grooves 16 located at the same end of the collar 8. The two first slide bars 13 are fixedly connected by the same first connecting ring 9.

[0032] In this embodiment, the second fixing ring 7 has another annular groove 15 near the end of the collar 8. The collar 8 has two second slide bars 14 sliding on both the upper and lower sides near the end of the second corrugated pipe 3. The two second slide bars 14 slide on two slide grooves 16 located at the same end of the collar 8. The same second connecting ring 10 is fixedly connected between the two second slide bars 14.

[0033] In this embodiment, the two ends of the first connecting ring 9 are respectively adapted to two of the annular grooves 15. One end of the first connecting ring 9 slides inside the collar 8, and the other end of the first connecting ring 9 slides to one end of the first fixing ring 2. The two ends of the second connecting ring 10 are respectively adapted to the other two annular grooves 15. One end of the second connecting ring 10 slides inside the collar 8, and the other end of the second connecting ring 10 slides to one end of the second fixing ring 7.

[0034] Working principle: Multiple screws 5 on the outer circular wall of the first fixed ring 2 and the second fixed ring 7 can be brought into contact with the four sides of the rotating rod 12. Then, multiple second nuts 6 are tightened until they contact the first fixed ring 2 and the second fixed ring 7. This completes the dustproof treatment of the universal joint body 11, preventing dust and mud from entering the surface of the universal joint body 11 and extending the life of the universal joint. When the universal joint is installed on another mechanical device, the first bellows 1 and the second bellows 3 are simply sealed and fixed to the mechanical device to achieve complete closure of the first bellows 1 and the second bellows 3. The first connecting ring 9 and the second connecting ring 10 can slide to ensure that the first bellows 1 and the second bellows 3 are connected together. The connection length of the first connecting ring 9 and the second connecting ring 10 can be adjusted according to the length of the first bellows 1 and the second bellows 3, which can well adapt to bellows of different lengths and improve the practicality of the universal joint dustproof mechanism.

[0035] In the specification and claims of this application, the terms "comprising / including" and "having / including" and variations thereof are used to specify the presence of the stated features, values, steps or components, but do not exclude the presence or addition of one or more other features, values, steps, components or combinations thereof.

[0036] Some features of this invention are described in different embodiments for clarity; however, these features may also be described in combination in a single embodiment. Conversely, some features of this invention are described only in a single embodiment for brevity; however, these features may also be described individually or in any suitable combination in different embodiments.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements 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 universal joint dustproof sealing structure, comprising a first bellows (1), characterized in that: A first fixing ring (2) is fixedly connected to one end of the first bellows (1). A second bellows (3) is installed on the side of the first fixing ring (2) away from the first bellows (1). A second fixing ring (7) is fixedly connected to the end of the second bellows (3) close to the first bellows (1). A universal joint body (11) is horizontally installed inside the first fixing ring (2). Another universal joint body (11) is horizontally installed inside the second fixing ring (7). A rotating rod (12) is fixedly connected between the two universal joint bodies (11).

2. The universal joint dustproof sealing structure according to claim 1, characterized in that: Four screws (5) are installed on the outer circular wall of the first fixing ring (2). The four screws (5) are distributed in a circle. One end of each of the four screws (5) is fixedly connected to one end of the rotating rod (12). A first nut (4) is fixedly connected to the top of each of the four screws (5). A second nut (6) is threaded onto each of the four screws (5). The four second nuts (6) are in contact with the first fixing ring (2).

3. The universal joint dustproof sealing structure according to claim 1, characterized in that: The outer circular wall of the second fixing ring (7) is equipped with four other screws (5). The four screws (5) are distributed in a circle. One end of each of the four screws (5) is fixedly connected to one end of the rotating rod (12). The top of each of the four screws (5) is fixedly connected with a first nut (4). Each of the four screws (5) is threaded with a second nut (6). The four second nuts (6) are in contact with the second fixing ring (7).

4. The universal joint dustproof sealing structure according to claim 1, characterized in that: A collar (8) is installed between the first corrugated pipe (1) and the second corrugated pipe (3). The top and bottom of both ends of the collar (8) are provided with sliding grooves (16), and the four sliding grooves (16) are symmetrically distributed. Both ends of the collar (8) are provided with annular grooves (15).

5. The universal joint dustproof sealing structure according to claim 1, characterized in that: The first fixing ring (2) has another annular groove (15) at one end near the collar (8). The collar (8) has first slide bars (13) sliding on both the upper and lower sides at the end near the first corrugated pipe (1). The two first slide bars (13) slide on two slide grooves (16) located at the same end of the collar (8). The two first slide bars (13) are fixedly connected by the same first connecting ring (9).

6. The universal joint dustproof sealing structure according to claim 5, characterized in that: The second fixing ring (7) has another annular groove (15) at one end near the collar (8). The collar (8) has two second slide bars (14) sliding on both the upper and lower sides near the second corrugated pipe (3). The two second slide bars (14) slide on two slide grooves (16) located at the same end of the collar (8). The two second slide bars (14) are fixedly connected by the same second connecting ring (10).

7. The universal joint dustproof sealing structure according to claim 6, characterized in that: The first connecting ring (9) is adapted to two of the annular grooves (15) at both ends. One end of the first connecting ring (9) slides inside the collar (8), and the other end of the first connecting ring (9) slides to one end of the first fixing ring (2). The second connecting ring (10) is adapted to two other annular grooves (15) at both ends. One end of the second connecting ring (10) slides inside the collar (8), and the other end of the second connecting ring (10) slides to one end of the second fixing ring (7).

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