Buckle type transmission chain bearing fixing structure

Abstract

The utility model discloses a buckle type transmission chain bearing fixing structure which comprises a chain shaft and a bearing, a locking structure is installed at one end of the outer surface of the upper end of the chain shaft, a key block is fixedly installed at one end of the outer surface of the lower end of the chain shaft, and the locking structure comprises an installation hole, a guide rod, a second compression spring, a clamping column, a guide hole and an upper slope wedge block. A key groove is formed in one side of the bearing middle inner ring, an insertion hole is formed in the other side of the bearing middle inner ring, and a disassembly structure is arranged on one side of the insertion hole. According to the buckle type conveying chain bearing fixing structure, the chain shaft and the bearing can be conveniently connected in a clamping mode through the locking structure, the stability of connection between the chain shaft and the bearing is improved, the chain shaft and the bearing can be conveniently detached through the detaching structure, and the bearing fixing structure is convenient to use. And through arrangement of a key block and a key groove, the stability of connection between the chain shaft and the bearing can be further improved.

Description

Technical Field

[0001] This utility model relates to the field of chain shaft and bearing connection technology, specifically a snap-fit ​​transmission chain bearing fixing structure. Background Technology

[0002] In a transmission chain system, the stability of the connection between the chain shaft and the bearing directly affects the reliability and service life of the entire transmission system. Traditional methods for fixing the chain shaft and bearing often involve threaded fastening, interference fit, or welding.

[0003] However, these methods have the following drawbacks:

[0004] 1. Threaded fasteners: Although easy to disassemble, they are prone to loosening under high-speed operation or vibration, leading to connection failure and requiring frequent maintenance;

[0005] 2. Interference fit: Although the connection is stable, the installation and disassembly process is complicated and requires special tools or heating / cooling processes, which increases maintenance costs and time;

[0006] 3. Welding fixation: The connection strength is high, but disassembly is difficult, and welding may cause material deformation or performance degradation, making it unsuitable for occasions that require frequent replacement or maintenance.

[0007] Therefore, we propose a snap-fit ​​transmission chain bearing fixing structure. Utility Model Content

[0008] (a) Technical problems to be solved

[0009] To address the shortcomings of existing technologies, this utility model provides a snap-fit ​​transmission chain bearing fixing structure. The connection between the chain shaft and the bearing is achieved through a snap-fit ​​method, which provides advantages such as stable connection and easy disassembly, effectively solving the problems in the background technology.

[0010] (II) Technical Solution

[0011] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a snap-fit ​​transmission chain bearing fixing structure, including a chain shaft and a bearing, a locking structure is installed at one end of the upper outer surface of the chain shaft, and a key block is fixedly installed at one end of the lower outer surface of the chain shaft. The locking structure includes a mounting hole, a guide rod, a second compression spring, a snap-fit ​​post, a guide hole, and an upper inclined wedge block. A keyway is provided on one side of the inner ring of the bearing, and an insertion hole is provided on the other side of the inner ring of the bearing. A disassembly structure is provided on one side of the insertion hole. The disassembly structure includes a through hole, a limiting cavity, a lower inclined wedge block, a limiting block, a first compression spring, and a movable shaft. The through hole is opened on the outer surface of one end of the bearing near the insertion hole, and one end of the through hole communicates with the insertion hole.

[0012] Preferably, the limiting cavity is located on one side of the middle of the through hole, the limiting block and the first compression spring are both located in the limiting cavity, the movable shaft slides through the through hole, the lower inclined wedge is fixedly installed on the outer surface of one end of the movable shaft, and the lower inclined wedge is located on the upper part of the insertion hole near the through hole.

[0013] Preferably, the limiting block is fixedly installed on one side of the upper outer surface of the movable shaft, the first compression spring is fixedly installed between one side of the outer surface of the limiting block and one end of the limiting cavity, the outer wall of the limiting block and the limiting cavity are slidably connected, and one side of the outer surface of the limiting block is elastically connected to one end of the limiting cavity through the first compression spring.

[0014] Preferably, the outer wall of the key block and the keyway are interlocked, and the outer wall of one end of the chain shaft and the inner ring of the bearing are interlocked.

[0015] Preferably, the mounting hole is opened at one end of the upper outer surface of the chain shaft, the guide rod is fixedly installed in the middle of the mounting hole, the second compression spring is movably sleeved on the outer wall of the guide rod, and the second compression spring is fixedly installed between the bottom of the mounting hole and the lower outer surface of the snap-fit ​​post, the upper inclined wedge is fixedly installed on the upper outer surface of the snap-fit ​​post, the guide hole is opened in the middle of the lower outer surface of the snap-fit ​​post, and the upper end of the guide rod extends into the lower end of the guide hole.

[0016] Preferably, the outer wall of the snap-fit ​​post and the upper inclined wedge block is slidably connected to the mounting hole, the lower outer surface of the snap-fit ​​post is elastically connected to the bottom of the mounting hole through a second compression spring, the snap-fit ​​post is slidably connected to the outer wall of the guide rod through the guide hole, the upper outer wall of the snap-fit ​​post is snapped to the lower end of the insertion hole, and the upper inclined wedge block is inserted into the insertion hole.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, this utility model provides a snap-fit ​​transmission chain bearing fixing structure, which has the following advantages:

[0019] 1. This snap-fit ​​transmission chain bearing fixing structure, through the snap-fit ​​design of the locking structure, forms a firm mechanical connection between the chain shaft and the bearing, avoiding the problem of loosening easily in the vibration environment of the traditional threaded fastening method. The addition of key block and keyway insertion fit further restricts the relative movement of the chain shaft and the bearing, ensuring the stability during the transmission process, and is especially suitable for high-speed or heavy-load conditions.

[0020] 2. This snap-fit ​​transmission chain bearing fixing structure uses a wedge block and spring for locking. During installation, only pressing the snap-fit ​​post is required to fix it, without complicated tools or additional operations, which significantly improves assembly efficiency. During disassembly, pressing the movable shaft triggers the wedge block to separate, achieving one-click unlocking. This solves the problem of difficult disassembly by interference fit or welding methods, and facilitates maintenance and replacement.

[0021] 3. This snap-fit ​​transmission chain bearing fixing structure adopts a modular design. The locking structure and disassembly structure are both integrated inside the chain shaft and bearing, eliminating the need for external parts, reducing failure points and extending service life. The cooperation between the spring and the guide hole ensures accurate movement trajectory of the snap-fit ​​column, avoiding uneven wear or jamming, and adapting to frequent disassembly and assembly needs. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a snap-fit ​​transmission chain bearing fixing structure according to the present invention.

[0023] Figure 2 This is a schematic diagram of the bearing structure in a snap-fit ​​transmission chain bearing fixing structure of this utility model.

[0024] Figure 3 This is a side cross-sectional view of the bearing in a snap-fit ​​transmission chain bearing fixing structure according to this utility model.

[0025] Figure 4 This is a side cross-sectional view of one end of the chain shaft in a snap-fit ​​transmission chain bearing fixing structure of this utility model.

[0026] In the diagram: 1. Chain shaft; 2. Bearing; 3. Keyway; 4. Insertion hole; 5. Disassembly structure; 6. Through hole; 7. Limiting cavity; 8. Lower inclined wedge block; 9. Limiting block; 10. First compression spring; 11. Locking structure; 12. Key block; 13. Mounting hole; 14. Guide rod; 15. Second compression spring; 16. Snap-fit ​​post; 17. Guide hole; 18. Upper inclined wedge block; 19. Movable shaft. Detailed Implementation

[0027] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0028] This embodiment is a snap-fit ​​transmission chain bearing fixing structure.

[0029] like Figure 1-4As shown, the assembly includes a chain shaft 1 and a bearing 2. A locking structure 11 is installed on one end of the upper outer surface of the chain shaft 1, and a key block 12 is fixedly installed on one end of the lower outer surface of the chain shaft 1. The locking structure 11 includes a mounting hole 13, a guide rod 14, a second compression spring 15, a snap-fit ​​post 16, a guide hole 17, and an upper inclined wedge block 18. A keyway 3 is provided on one side of the inner ring of the bearing 2, and an insertion hole 4 is provided on the other side of the inner ring of the bearing 2. A disassembly structure 5 is provided on one side of the insertion hole 4. The disassembly structure 5 includes a through hole 6, a limiting cavity 7, a lower inclined wedge block 8, a limiting block 9, a first compression spring 10, and a movable shaft 19. The through hole 6 is located on one side of the outer surface of the bearing 2 near the insertion hole 4, and one end of the through hole 6 is connected to the insertion hole 4.

[0030] The limiting cavity 7 is located on one side of the middle of the through hole 6. The limiting block 9 and the first compression spring 10 are both located in the limiting cavity 7. The movable shaft 19 slides through the through hole 6. The lower inclined wedge 8 is fixedly installed on the outer surface of one end of the movable shaft 19, and the lower inclined wedge 8 is located on the side of the upper part of the insertion hole 4 near the through hole 6. The limiting block 9 is fixedly installed on one side of the upper outer surface of the movable shaft 19. The first compression spring 10 is fixedly installed between one side of the outer surface of the limiting block 9 and one end of the limiting cavity 7. The outer wall of the limiting block 9 and the limiting cavity 7 are slidably connected. One side of the outer surface of the limiting block 9 is elastically connected to one end of the limiting cavity 7 through the first compression spring 10. The outer wall of the key block 12 is inserted into the keyway 3. The outer wall of one end of the chain shaft 1 is inserted into the inner ring of the bearing 2. The mounting hole 13 is opened at one end of the upper outer surface of the chain shaft 1. The guide rod 1 4 is fixedly installed in the middle of the mounting hole 13. The second compression spring 15 is movably sleeved on the outer wall of the guide rod 14, and the second compression spring 15 is fixedly installed between the bottom of the mounting hole 13 and the lower outer surface of the snap-fit ​​post 16. The upper inclined wedge block 18 is fixedly installed on the upper outer surface of the snap-fit ​​post 16. The guide hole 17 is opened in the middle of the lower outer surface of the snap-fit ​​post 16. The upper end of the guide rod 14 extends into the lower end of the guide hole 17. The outer walls of the snap-fit ​​post 16 and the upper inclined wedge block 18 are slidably connected to the mounting hole 13. The lower outer surface of the snap-fit ​​post 16 is elastically connected to the bottom of the mounting hole 13 through the second compression spring 15. The snap-fit ​​post 16 is slidably connected to the outer wall of the guide rod 14 through the guide hole 17. The upper outer wall of the snap-fit ​​post 16 is snapped with the lower end of the insertion hole 4. The upper inclined wedge block 18 is inserted with the insertion hole 4.

[0031] It should be noted that this utility model is a snap-fit ​​transmission chain bearing fixing structure. When connecting the chain shaft 1 and the bearing 2, the locking structure 11 is provided, which presses the upper inclined wedge 18 in the locking structure 11. The upper inclined wedge 18 drives the snap-fit ​​post 16 to slide along the mounting hole 13, so that the upper inclined wedge 18 enters the mounting hole 13. The snap-fit ​​post 16 presses the second compression spring 15 in the mounting hole 13. The snap-fit ​​post 16 slides along the guide rod 14 through the guide hole 17, and then one end of the chain shaft 1 is inserted into the interior of the bearing 2, so that the key block 12 is inserted into the keyway 3. When the snap-fit ​​post 16 reaches one end of the insertion hole 4, due to The reaction force of the second compression spring 15 drives the upper end of the locking post 16 to insert into the lower part of the insertion hole 4, and the upper inclined wedge block 18 extends into the upper part of the insertion hole 4, completing the assembly of the chain shaft 1 and the bearing 2. During disassembly, the disassembly structure 5 is set to press the movable shaft 19, and the movable shaft 19 slides along the through hole 6. The movable shaft 19 drives the lower inclined wedge block 8 to press the upper inclined wedge block 18. The movable shaft 19 drives the limiting block 9 to press the first compression spring 10 in the limiting cavity 7. After the lower inclined wedge block 8 presses the upper inclined wedge block 18, the upper end of the locking post 16 separates from the insertion hole 4. At this time, one end of the chain shaft 1 can be pulled out from the bearing 2, completing the disassembly.

[0032] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., 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. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A snap-fit ​​transmission chain bearing fixing structure, comprising a chain shaft (1) and a bearing (2), characterized in that: A locking structure (11) is installed on one end of the upper outer surface of the chain shaft (1), and a key block (12) is fixedly installed on one end of the lower outer surface of the chain shaft (1). The locking structure (11) includes a mounting hole (13), a guide rod (14), a second compression spring (15), a snap-fit ​​post (16), a guide hole (17), and an upper inclined wedge block (18). A keyway (3) is provided on one side of the inner ring of the bearing (2), and a plug-in hole (4) is provided on the other side of the inner ring of the bearing (2). A disassembly structure (5) is provided on one side of the plug-in hole (4). The disassembly structure (5) includes a through hole (6), a limiting cavity (7), a lower inclined wedge block (8), a limiting block (9), a first compression spring (10), and a movable shaft (19). The through hole (6) is opened on one side of the outer surface of the bearing (2) near the plug-in hole (4), and one end of the through hole (6) is connected to the plug-in hole (4).

2. The snap-fit ​​transmission chain bearing fixing structure according to claim 1, characterized in that: The limiting cavity (7) is opened on one side of the middle part of the through hole (6). The limiting block (9) and the first compression spring (10) are both located in the limiting cavity (7). The movable shaft (19) slides through the through hole (6). The lower inclined wedge (8) is fixedly installed on the outer surface of one end of the movable shaft (19), and the lower inclined wedge (8) is located on the upper part of the insertion hole (4) near the through hole (6).

3. The snap-fit ​​transmission chain bearing fixing structure according to claim 2, characterized in that: The limiting block (9) is fixedly installed on one side of the upper outer surface of the movable shaft (19). The first compression spring (10) is fixedly installed between one side of the outer surface of the limiting block (9) and one end of the limiting cavity (7). The outer wall of the limiting block (9) and the limiting cavity (7) are slidably connected. The outer surface of one side of the limiting block (9) is elastically connected to one end of the limiting cavity (7) through the first compression spring (10).

4. The snap-fit ​​transmission chain bearing fixing structure according to claim 3, characterized in that: The outer wall of the key block (12) is inserted into the keyway (3), and the outer wall of one end of the chain shaft (1) is inserted into the inner ring of the bearing (2).

5. The snap-fit ​​transmission chain bearing fixing structure according to claim 4, characterized in that: The mounting hole (13) is opened at one end of the upper outer surface of the chain shaft (1). The guide rod (14) is fixedly installed in the middle of the mounting hole (13). The second compression spring (15) is movably sleeved on the outer wall of the guide rod (14). The second compression spring (15) is fixedly installed between the bottom of the mounting hole (13) and the lower outer surface of the snap-fit ​​post (16). The upper inclined wedge (18) is fixedly installed on the upper outer surface of the snap-fit ​​post (16). The guide hole (17) is opened in the middle of the lower outer surface of the snap-fit ​​post (16). The upper end of the guide rod (14) extends into the lower end of the guide hole (17).

6. The snap-fit ​​transmission chain bearing fixing structure according to claim 5, characterized in that: The outer walls of the snap-fit ​​post (16) and the upper inclined wedge block (18) are slidably connected to the mounting hole (13). The lower outer surface of the snap-fit ​​post (16) is elastically connected to the bottom of the mounting hole (13) through the second compression spring (15). The snap-fit ​​post (16) is slidably connected to the outer wall of the guide rod (14) through the guide hole (17). The upper outer wall of the snap-fit ​​post (16) is snapped to the lower end of the insertion hole (4). The upper inclined wedge block (18) is inserted into the insertion hole (4).

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