Universal wheel reversing structure

Abstract

The utility model discloses a reversing structure of a universal wheel. The reversing structure comprises a sleeve cap, a reversing wheel, a roller and a brake block, the sleeve cap is provided with a cavity, the bottom end of the cavity is open so that the reversing wheel can be installed in the cavity, the reversing wheel extends out of a connecting lug, and the connecting lug of the reversing wheel installed in the cavity extends out of the cavity. The roller is connected with a shaft core in a penetrating manner, and the shaft core is connected to the connecting lug to assemble the roller on the reversing wheel, so that the roller and the reversing wheel rotate together, and the roller freely rolls relative to the shaft core; clamping teeth are arranged at the ends of the idler wheels, the brake blocks are provided with clamping openings, the brake blocks are rotationally connected to the reversing wheels, and the brake blocks are movably connected with the clamping teeth through the clamping openings to limit rotation of the idler wheels. The device has the advantages of simple structure, compact matching, reasonable design and the like; therefore, the device is a product with excellent technical and economical performance.

Description

[Technical Field]

[0001] This utility model mainly relates to a universal wheel reversing structure. [Background Technology]

[0002] Many pieces of furniture, such as bedside tables, chairs, and filing cabinets, are typically equipped with casters at the bottom to reduce the time and effort required for manual handling. In spaces with limited space, casters allow for flexible movement of tables and chairs, enabling them to be pushed into corners or placed against walls when not in use, saving space and facilitating other activities. However, current caster technology often results in complex structures with exposed rotating parts, affecting aesthetics and making them prone to damage. Therefore, we have improved the reversing structure of the casters, making them more aesthetically pleasing and durable. [Utility Model Content]

[0003] To solve at least one of the above problems, this utility model proposes a new structural solution. The universal wheel reversing structure adopts the following technical solution:

[0004] A universal wheel reversing structure includes a cap, a reversing wheel, a roller, and a brake block;

[0005] The cap has a cavity, the bottom of which is open to allow the reversing wheel to be installed inside the cavity. The reversing wheel extends out of the lug, and the lug of the reversing wheel installed in the cavity extends out of the cavity.

[0006] The roller has a shaft core that passes through it, and the shaft core is connected to a lug to assemble the roller onto the reversing wheel, so that the roller and the reversing wheel rotate together and the roller rolls freely relative to the shaft core; the end of the roller is provided with a locking tooth, and the brake block is provided with a locking slot. The brake block is rotatably connected to the reversing wheel, and the brake block is movably connected to the locking tooth through its locking slot to restrict the rotation of the roller.

[0007] Preferably, the reversing wheel has a connecting hole, and a retaining pin is provided inside the cap. The retaining pin is connected to the connecting hole to engage the reversing wheel in the cavity, and the reversing wheel rotates around the retaining pin as the rotation axis to adjust the rolling direction of the roller.

[0008] Preferably, the lug is provided with a first insertion hole and a second insertion hole, and protrusions extend from both sides of the brake block respectively. The protrusions are connected to the first insertion hole so that the brake block is rotatably connected to the reversing wheel; the shaft is connected to the second insertion hole.

[0009] Preferably, the top of the reversing wheel is provided with an annular groove, and the annular groove is provided with balls, which are connected to the reversing wheel and the cap respectively.

[0010] Preferably, the locking post is composed of several locking blocks arranged in a circular pattern, with the locking blocks spaced apart. The locking blocks are L-shaped to support and engage the reversing wheel, preventing the reversing wheel from disengaging from the locking post.

[0011] Preferably, a spring is built into the cavity, the first end of the brake block is connected to the spring, and the end of the brake block is connected to a pressure rod.

[0012] The beneficial effects of this utility model compared with the prior art are:

[0013] To prevent the reversing mechanism of the caster wheels from being exposed, this design assembles the reversing wheels and rollers together and installs them within a cavity. This allows the reversing structure to be concealed within a cap, preventing damage caused by exposed reversing wheels and rollers, improving durability, and enhancing overall aesthetics. It boasts advantages such as simple structure, compact fit, and rational design; therefore, it is a product with superior technical and economic performance. [Attached Image Description]

[0014] Figure 1 A schematic diagram of the universal wheel reversing structure in a preferred embodiment of this utility model;

[0015] Figure 2 An exploded view of the universal wheel reversing structure in a preferred embodiment of this utility model;

[0016] Figure 3 A schematic diagram of the reversing wheel in a preferred embodiment of this utility model;

[0017] Figure 4 A schematic diagram of the cap in a preferred embodiment of this utility model;

[0018] Figure 5 This is a schematic diagram of the cap in a preferred embodiment of the present invention.

Detailed Implementation Methods

[0019] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0020] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection; they can refer to a direct connection or a connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] The following description, in conjunction with the accompanying drawings, further illustrates specific embodiments of the present invention, making the technical solution and beneficial effects of the present invention clearer and more explicit. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0022] The preferred embodiment provided by this utility model is as follows: Figures 1-5 As shown, a universal wheel reversing structure includes a cap 1, a reversing wheel 2, a roller 3, and a brake block 4; the cap 1 has a cavity 11, the bottom end of the cavity 11 is open to allow the reversing wheel 2 to be installed in the cavity 11, the reversing wheel 2 extends out of the lug 21, and the lug 21 of the reversing wheel 2 installed in the cavity 11 extends out of the cavity 11;

[0023] The roller 3 has a through hole 31, through which a shaft core 32 passes. The shaft core 32 passes through the through hole 31, and both ends of the shaft core 32 extend out of the through hole 31. The shaft core 32 is connected to the lug 21 to assemble the roller 3 onto the reversing wheel 2, so that the roller and the reversing wheel rotate together. The roller 3 rolls freely relative to the shaft core 32. The end of the roller 3 is provided with a retaining tooth 33, which is located at both ends of the roller 3. The brake block 4 is provided with a retaining slot 41, which is located at both ends of the brake block 4. The position of the retaining slot 41 corresponds to the position of the retaining tooth 33. The brake block 4 is rotatably connected to the reversing wheel 2. The brake block 4 is movably connected to the retaining tooth 33 through its retaining slot 41 to restrict the rotation of the roller 3.

[0024] The reversing wheel 2 has a receiving hole 22, and a retaining post 5 is provided inside the cap 1. The retaining post 5 is connected to the receiving hole 22 to engage the reversing wheel 2 in the cavity 11, and the reversing wheel 2 rotates around the retaining post 5 as the rotation axis 32 to adjust the rolling direction of the roller 3. The retaining post 5 is composed of several retaining blocks 51 arranged in a circular pattern, with the retaining blocks 51 spaced apart. The retaining blocks 51 are generally L-shaped to support and engage the reversing wheel 2, preventing the reversing wheel 2 from disengaging from the retaining post 5. The top of the reversing wheel 2 is provided with an annular groove 23, and the annular groove 23 is provided with a ball bearing 24. The ball bearing 24 is placed in the cavity 11 and is located between the reversing wheel 2 and the cap 1. The ball bearing 24 is connected to both the reversing wheel 2 and the cap 1.

[0025] The lug 21 has a first insertion hole 25 and a second insertion hole 26. Protrusions 43 extend from both sides of the brake block 4, and the protrusions 43 are connected to the first insertion hole 25 to allow the brake block 4 to be rotatably connected to the reversing wheel 2. The shaft core 32 is connected to the second insertion hole 26. A spring 42 is housed inside the cavity 11. The head end of the brake block 4 is connected to the spring 42, and the end of the brake block 4 is connected to a pressure rod 7. A corresponding recess 45 is provided at the head end of the brake block 4 for the spring 42 to enter.

[0026] The roller 3 is a one-piece structure. Clamping teeth 33 are located at both ends of the roller 3. The shaft core 32 passes through the through hole 31 and connects to the second insertion hole 26, allowing the roller 3 to rotate freely around the reversing wheel 2. The reversing wheel 2 is horizontally positioned, and the roller 3 is vertically positioned relative to it. The cap 1 secures the reversing wheel 2 with clamping posts 5. The diameter of the clamping posts 5, formed by several clamping blocks 51, is smaller than the diameter of the connecting hole 22 of the reversing wheel 2, allowing the reversing wheel 2 to rotate freely around the clamping posts 5. The L-shaped clamping blocks 51 support the reversing wheel 2, preventing it from detaching from the cap 1. The spaced clamping blocks 51 make the clamping posts 5 elastic, facilitating the connection of the reversing wheel 2 to the clamping posts 5. Rotating the reversing wheel 2 adjusts the direction of the roller 3.

[0027] The first insertion hole 25 is rotatably connected to a brake block 4. The protrusion 43 is located in the middle of the brake block 4, so the first and second ends of the brake block 4 can tilt up relative to each other. The first end of the brake block 4 is connected to a spring 42. The two ends of the spring 42 abut against the brake block 4 and the cap 1 respectively. The spring 42 can keep the latch 41 of the brake block 4 connected to the tooth 33 to limit the rotation of the roller 3. The second end of the brake block 4 is connected to a pressure rod 7. The cap is provided with a through hole 12 for the top end of the pressure rod to extend and connect with the push block. The pressure rod 7 is bent in shape. The cap 1 is provided with a push block 6. The top end of the pressure rod 7 is connected to the push block 6, and the bottom end of the pressure rod 7 is connected to the brake block 4. The brake block 4 is provided with a stepped position 44. When the push block moves horizontally, it makes the pressure rod contact different positions of the stepped position, thereby making the pressure rod move up and down. Therefore, the push block 6 drives the pressure rod 7 to move horizontally. The pressure rod 7 presses down the tilted end of the brake block 4, so that the latch 41 separates from the tooth 33, and the roller 3 can rotate.

[0028] In the description of this specification, references to terms such as "an embodiment," "preferred," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. Illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0029] Based on the above description of the structure and principle, those skilled in the art should understand that this utility model is not limited to the specific embodiments described above. Improvements and substitutions based on this utility model using techniques known in the art all fall within the protection scope of this utility model and should be defined by the claims.

Claims

1. A universal reversing structure, characterized in that: It includes a cap, reversing wheel, roller, and brake block; The cap has a cavity, the bottom of which is open to allow the reversing wheel to be installed inside the cavity. The reversing wheel extends out of the lug, and the lug of the reversing wheel installed in the cavity extends out of the cavity. The roller has a shaft core that passes through it, and the shaft core is connected to a lug to assemble the roller onto the reversing wheel, so that the roller and the reversing wheel rotate together and the roller rolls freely relative to the shaft core; the end of the roller is provided with a locking tooth, and the brake block is provided with a locking slot. The brake block is rotatably connected to the reversing wheel, and the brake block is movably connected to the locking tooth through its locking slot to restrict the rotation of the roller.

2. The universal wheel reversing structure according to claim 1, characterized in that: The reversing wheel has a connecting hole, and a retaining pin is provided inside the cap. The retaining pin is connected to the connecting hole to engage the reversing wheel in the cavity, and the reversing wheel rotates around the retaining pin as the rotation axis to adjust the rolling direction of the roller.

3. The universal wheel reversing structure according to claim 1, characterized in that: The lug has a first socket and a second socket. Protrusions extend from both sides of the brake block, and the protrusions are connected to the first socket to allow the brake block to be rotatably connected to the reversing wheel. The shaft is connected to the second socket.

4. The universal wheel reversing structure according to claim 1, characterized in that: The top of the reversing wheel is provided with an annular groove, and the annular groove is provided with balls, which are connected to the reversing wheel and the cap respectively.

5. The universal wheel reversing structure according to claim 1, characterized in that: The locking post is composed of several locking blocks arranged in a circular pattern, with the blocks spaced apart. The blocks are L-shaped to support and engage the reversing wheel, preventing the reversing wheel from disengaging from the locking post.

6. The universal wheel reversing structure according to claim 1, characterized in that: A spring is installed inside the cavity. The first end of the brake block is connected to the spring, and the second end of the brake block is connected to a pressure rod.

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