Universal wheel brake assembly

Abstract

The utility model discloses a universal wheel brake assembly which comprises a universal wheel body, a side frame is connected to one side of the bottom of the universal wheel body in a welded mode, wheel bodies are distributed on one side of the side frame, anti-skid lines are arranged on the outer surfaces of the wheel bodies, a rotating shaft penetrates through the center points of the wheel bodies, and the rotating shaft is connected with the side frame in a welded mode. A key groove is formed in the outer surface of one end of the rotating shaft; by combining the lower pressing plate, the movable rod and the limiting convex block, the wheel body can be effectively limited conveniently in the subsequent use process of the whole structure, compared with an existing friction brake mode, higher efficiency and a better effect are achieved, the situation that abrasion is generated along with increase of the use frequency, and consequently the subsequent brake effect is affected is avoided, and the service life of the wheel body is prolonged. When the lower pressing plate moves longitudinally, the movable rod fixedly connected with the bottom of the lower pressing plate can be pushed, then longitudinal movement of the movable rod is achieved, the limiting protruding block can be pushed when the movable rod moves longitudinally, the limiting protruding block is clamped to the inner side of the key groove, the limiting purpose is achieved, and the braking effect is achieved.

Description

Technical Field

[0001] The utility model relates to the field of universal wheel brake assemblies, and particularly to a universal wheel brake assembly. Background Art

[0002] A universal wheel is a so-called swivel caster, and its structure allows 360-degree horizontal rotation. Casters are a general term that includes swivel casters and fixed casters. Fixed casters do not have a rotating structure and cannot rotate horizontally but can only rotate vertically. These two types of casters are generally used in combination. For example, the structure of a handcart is two fixed wheels at the front and two swivel universal wheels near the pushing armrest at the back;

[0003] As disclosed in the utility model with the authorization announcement number CN203937437U, the brake part of the universal wheel with brakes includes an end at a fixed position, which makes it difficult for the user's foot to slip off the brake part and has a good foot feeling. At the same time, it has a friction part with adjustable position, which is convenient for the user to adjust the brake sensitivity. However, currently, most universal wheels use friction to achieve the braking effect when braking. After long-term use, the friction effect will decrease, resulting in the universal wheel not being able to be braked in time, thus causing unnecessary trouble. Content of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a universal wheel brake assembly, which can solve the technical problems that the brake part of the existing universal wheel includes an end at a fixed position, making it difficult for the user's foot to slip off the brake part and having a good foot feeling. At the same time, it has a friction part with adjustable position, which is convenient for the user to adjust the brake sensitivity. However, currently, most universal wheels use friction to achieve the braking effect when braking. After long-term use, the friction effect will decrease, resulting in the universal wheel not being able to be braked in time, thus causing unnecessary trouble.

[0005] To solve the above technical problems, the utility model provides the following technical solution: A universal wheel brake assembly includes a universal wheel main body. One side of the bottom of the universal wheel main body is welded and connected with a side frame, and a wheel body is distributed on one side of the side frame. The outer surface of the wheel body is provided with anti-slip patterns. A rotating shaft penetrates through the center point of the wheel body, and a key groove is opened on the outer surface of one end of the rotating shaft. A connecting shaft is arranged in the middle of the top end of the universal wheel main body, and a lower pressing plate is sleeved on the outer side of the connecting shaft. A pushing plate is welded and connected to the side wall of the lower pressing plate. One side of the bottom of the lower pressing plate is fixedly installed with a movable rod, and the other end of the movable rod is fixedly connected with a limiting convex block. A return spring is sleeved on the outer surface of the movable rod, a positioning hole is opened on the surface of the movable rod, and a clamping structure is opened on the side wall of the universal wheel main body.

[0006] As a preferred technical solution of the present utility model, the engaging structure includes a through hole and a groove. The through hole is opened on the side wall of the universal wheel body, and a groove is distributed on one side of the through hole.

[0007] As a preferred technical solution of the present utility model, a pull plate is distributed on one side of the universal wheel body, and a positioning rod is fixedly installed on the side wall of the pull plate. Convex plates are symmetrically distributed on both sides of the positioning rod.

[0008] As a preferred technical solution of the present utility model, the key grooves are equidistantly distributed along the center point of the rotating shaft, and the key grooves and the rotating shaft form an integrated structure.

[0009] As a preferred technical solution of the present utility model, the lower pressing plate is slidably connected to the universal wheel body through the movable rod, and the movable rod and the lower pressing plate are vertically distributed.

[0010] As a preferred technical solution of the present utility model, the positioning hole penetrates through the movable rod, and the positioning hole and the movable rod form an integrated structure.

[0011] Compared with the prior art, the beneficial effects that the present utility model can achieve are:

[0012] 1. By combining the provided lower pressing plate, movable rod and limiting convex block, it is convenient to effectively limit the wheel body during the subsequent use of the entire structure. Compared with the existing friction braking method, it has higher efficiency and better effect, and will not be worn with the increase of the number of uses, thus affecting the subsequent braking effect. When the lower pressing plate moves longitudinally, it will push the movable rod fixedly connected to its bottom, thereby realizing the longitudinal movement of the movable rod. Then, when the movable rod moves longitudinally, it will push the limiting convex block so that it is engaged inside the key groove, thereby achieving the purpose of limiting and playing the braking effect;

[0013] 2. By combining the provided pull plate, positioning rod and convex block, the movable rod can be limited, so as to realize the locking of the wheel body, thereby realizing the positioning of the universal wheel. When the pull plate drives the positioning rod and the convex block to be engaged inside the side wall of the universal wheel body, the positioning rod will pass through the inside of the through hole and extend into the positioning hole, and then the limiting of the movable rod can be realized, so as to prevent the movable rod from rebounding under the action of the return spring, thereby realizing the locking of the wheel body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of the universal wheel braking assembly of the present utility model;

[0015] Figure 2 It is a schematic side view structural diagram of the lower pressing plate of the universal wheel braking assembly of the present utility model;

[0016] Figure 3 This is a schematic side view structure diagram of the wheel body of the universal wheel brake assembly of the present utility model;

[0017] Figure 4 This is a schematic top view structure diagram of the universal wheel main body of the universal wheel brake assembly of the present utility model;

[0018] Among them: 1. Universal wheel main body; 2. Side frame; 3. Wheel body; 4. Anti-slip pattern; 5. Rotating shaft; 6. Keyway; 7. Connecting shaft; 8. Lower pressing plate; 9. Push plate; 10. Movable rod; 11. Limit convex block; 12. Return spring; 13. Positioning hole; 14. Through hole; 15. Groove; 16. Pulling plate; 17. Positioning rod; 18. Convex plate. Specific implementation manner

[0019] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments. However, the following embodiments are only the preferred embodiments of the present utility model and not all of them. Based on the embodiments in the implementation manner, other embodiments obtained by those skilled in the art without creative labor all belong to the protection scope of the present utility model.

[0020] Embodiment

[0021] Please refer to Figure 1 As shown, the present utility model provides a universal wheel brake assembly, including a universal wheel main body 1. One side of the bottom of the universal wheel main body 1 is welded and connected with a side frame 2, and a wheel body 3 is distributed on one side of the side frame 2. An anti-slip pattern 4 is arranged on the outer surface of the wheel body 3. A rotating shaft 5 penetrates through the center point of the wheel body 3, and a keyway 6 is opened on the outer surface of one end of the rotating shaft 5. A connecting shaft 7 is arranged in the middle of the top end of the universal wheel main body 1, and a lower pressing plate 8 is sleeved on the outer side of the connecting shaft 7. A push plate 9 is welded and connected to the side wall of the lower pressing plate 8. One side of the bottom of the lower pressing plate 8 is fixedly installed with a movable rod 10, and the other end of the movable rod 10 is fixedly connected with a limit convex block 11. A return spring 12 is sleeved on the outer surface of the movable rod 10, and a positioning hole 13 is opened on the surface of the movable rod 10. A clamping structure is opened on the side wall of the universal wheel main body 1;

[0022] During use, the entire universal wheel structure is connected to the bottom of the instrument through the arranged connecting shaft 7. Since the connecting shaft 7 and the universal wheel main body 1 form a rotational connection, it is convenient to adjust in different directions during subsequent use. When braking is required, only the lower pressing plate 8 needs to be longitudinally squeezed;

[0023] As a further implementation manner of this embodiment, as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown in the figure, one side of the bottom of the caster body 1 is welded and connected with a side frame 2, and a wheel body 3 is distributed on one side of the side frame 2. An anti-slip pattern 4 is arranged on the outer surface of the wheel body 3. A rotating shaft 5 penetrates through the center point of the wheel body 3, and a key groove 6 is formed on the outer surface of one end of the rotating shaft 5. The key grooves 6 are equidistantly distributed along the center point of the rotating shaft 5, and the key grooves 6 and the rotating shaft 5 form an integrated structure. A connecting shaft 7 is arranged in the middle of the top end of the caster body 1, and a lower pressing plate 8 is sleeved on the outer side of the connecting shaft 7. The lower pressing plate 8 is slidably connected with the caster body 1 through a movable rod 10, and the movable rod 10 and the lower pressing plate 8 are vertically distributed. A push plate 9 is welded and connected to the side wall of the lower pressing plate 8. One side of the bottom of the lower pressing plate 8 is fixedly installed with a movable rod 10, and the other end of the movable rod 10 is fixedly connected with a limiting convex block 11. A return spring 12 is sleeved on the outer surface of the movable rod 10. A positioning hole 13 is formed on the surface of the movable rod 10. The positioning hole 13 penetrates through the movable rod 10, and the positioning hole 13 and the movable rod 10 form an integrated structure. A clamping structure is arranged on the side wall of the caster body 1. The clamping structure includes a through hole 14 and a groove 15. The through hole 14 is formed on the side wall of the caster body 1, and a groove 15 is distributed on one side of the through hole 14. A pull plate 16 is distributed on one side of the caster body 1, and a positioning rod 17 is fixedly installed on the side wall of the pull plate 16. Convex plates 18 are symmetrically distributed on both sides of the positioning rod 17;

[0024] During use, the wheel body 3 is rotationally connected to the side frame 2 through the rotating shaft 5 to facilitate the subsequent movement of the instrument. Since the surface of the wheel body 3 is provided with anti-slip patterns 4, the combined anti-slip patterns 4 can achieve the purpose of anti-slip. When braking is required, the push plate 9 is pushed. Then, the push plate 9 longitudinally presses the lower pressing plate 8 fixedly connected to one end thereof. Immediately, the lower pressing plate 8 moves longitudinally to push the movable rod 10 fixedly connected to its bottom. The longitudinal movement of the movable rod 10 is used to achieve the longitudinal movement of the limiting convex block 11, so as to input the limiting convex block 11 into the inner side of the keyway 6, thereby limiting the rotating shaft 5 and achieving the braking effect. While the movable rod 10 drives the limiting convex block 11 to move longitudinally, the limiting convex block 11 will pull the return spring 12, thereby realizing the deformation of the return spring 12. Combining the reverse force generated by its deformation can realize the longitudinal reset of the movable rod 10 when the force applied to the push plate 9 disappears, so that the limiting convex block 11 disengages from the inner side of the keyway 6. When the position of the movable rod 10 needs to be positioned, the movable rod 10 is driven to make the limiting convex block 11 completely engaged with the inner side of the keyway 6. Then, the positioning rod 17 is driven into the inner side of the through hole 14 by the pull plate 16. Subsequently, the positioning rod 17 passes through the inner side of the through hole 14 and extends into the positioning hole 13, and then the positioning of the movable rod 10 can be realized, so as to realize the locking of the rotating shaft 5. At the same time, when the positioning rod 17 is driven into the inner side of the through hole 14, the convex plate 18 will be engaged with the inner side of the groove 15 to realize the positioning of the pull plate 16. The whole structure is convenient and fast, and has higher practicability. Compared with the existing friction braking method, it is more convenient.

[0025] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A universal wheel brake assembly, comprising a universal wheel body (1), characterized in that: One side of the bottom of the universal wheel body (1) is welded and connected with a side frame (2), and a wheel body (3) is distributed on one side of the side frame (2). An anti-slip pattern (4) is arranged on the outer surface of the wheel body (3). A rotating shaft (5) penetrates through the center point of the wheel body (3), and a keyway (6) is arranged on the outer surface of one end of the rotating shaft (5). A connecting shaft (7) is arranged in the middle of the top end of the universal wheel body (1), and a lower pressing plate (8) is sleeved on the outer side of the connecting shaft (7). A pushing plate (9) is welded and connected to the side wall of the lower pressing plate (8). One side of the bottom of the lower pressing plate (8) is fixedly installed with a movable rod (10), and the other end of the movable rod (10) is fixedly connected with a limiting convex block (11). A return spring (12) is sleeved on the outer surface of the movable rod (10). A positioning hole (13) is arranged on the surface of the movable rod (10). A clamping structure is arranged on the side wall of the universal wheel body (1).

2. The universal wheel brake assembly according to claim 1, characterized in that: The clamping structure includes a through hole (14) and a groove (15). The through hole (14) is arranged on the side wall of the universal wheel body (1), and a groove (15) is distributed on one side of the through hole (14).

3. The universal wheel brake assembly according to claim 1, wherein: A pulling plate (16) is distributed on one side of the universal wheel body (1), and a positioning rod (17) is fixedly installed on the side wall of the pulling plate (16). Convex plates (18) are symmetrically distributed on both sides of the positioning rod (17).

4. A universal wheel brake assembly according to claim 1, characterized in that: The keyways (6) are equidistantly distributed along the center point of the rotating shaft (5), and the keyways (6) and the rotating shaft (5) form an integrated structure.

5. The universal wheel brake assembly according to claim 1, wherein: The lower pressing plate (8) is slidably connected with the universal wheel body (1) through the movable rod (10), and the movable rod (10) and the lower pressing plate (8) are vertically distributed.

6. The universal wheel brake assembly according to claim 1, wherein: The positioning hole (13) penetrates through the movable rod (10), and the positioning hole (13) and the movable rod (10) form an integrated structure.

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