A universal wheel structure

Abstract

The utility model discloses a universal wheel structure relates to universal wheel production technical field, including base still includes: set up the connecting rod on the base, the wheel body is connected to the both ends of connecting rod, and the outer wall on wheel body one side is provided with the clamping groove, set up the clamping mechanism in the base, and the clamping mechanism includes the clamping joint, elastic unit and the knob, and the clamping joint slidingly connects in the base, and the clamping joint is provided with the clamping block symmetry, and the elastic unit sets up between the base and the clamping joint, and the knob rotation is connected in the base, drives the clamping joint and the knob abuts through the elastic unit. The utility model provides a universal wheel structure, and the clamping joint and the knob abut through the elastic unit, and when rotating the knob, can drive the clamping joint of clamping mechanism and keep sliding in the base, and then make the clamping block symmetry of clamping joint and the clamping groove on the wheel body on two sides clamping, and then can realize the wheel body of two sides and lock, improve the stability of wheel body lock.

Description

Technical Field

[0001] This utility model relates to the field of universal wheel manufacturing technology, and more specifically to a universal wheel structure. Background Technology

[0002] Casters, also known as swivel casters, are designed to rotate 360 ​​degrees horizontally. Current technology already utilizes casters with integrated brakes.

[0003] According to invention patent application CN107116969B, published on May 25, 2021, a universal wheel is disclosed, installed at the bottom of a machine. It includes an elastic bracket, a roller, and a connecting shaft. The elastic bracket comprises a semi-ring frame, an elastic arm, a collar, and a vertical shaft. The semi-ring frame is a semi-ring structure symmetrically arranged along a vertically set centerline. The collar is located below the semi-ring frame with its center on the centerline. One end of the elastic arm connects to the semi-ring frame, and the other end connects to the collar. The vertical shaft is located at the top of the semi-ring frame to connect to the machine. A locking structure is provided between the roller and the elastic bracket. The connecting shaft passes through the inner hole of the collar and connects to the roller. When the machine is not under force, the locking structure locks the roller and the elastic bracket together. When the machine is subjected to downward pressure or upward pull, the locking structure releases the lock between the roller and the elastic bracket through the deformation of the elastic arm. Its main technical effect is that it is locked in normal use, and when moving the machine, it is necessary to simultaneously press down or pull up the machine to release the lock, thus preventing young children from moving the machine.

[0004] In existing technologies, omnidirectional wheels are locked only from one side, resulting in an unstable lock. To address this issue, a new omnidirectional wheel structure is proposed to solve the problem of unstable locking caused by omnidirectional wheels being locked only from one side. Utility Model Content

[0005] The purpose of this invention is to provide a universal wheel structure that solves the problem that existing universal wheels are not securely locked because they are locked only from one side.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A swivel wheel structure includes a base and further includes: The connecting shaft is set on the base; A wheel body connected to both ends of the connecting shaft, wherein a snap-fit ​​groove is provided on the outer wall of one side of the wheel body; A snap-fit ​​mechanism is provided inside the base. The snap-fit ​​mechanism includes a snap-fit ​​connector, an elastic unit, and a toggle block. The snap-fit ​​connector is slidably connected to the base. Snap-fit ​​blocks are symmetrically arranged on the snap-fit ​​connector. The elastic unit is disposed between the base and the snap-fit ​​connector. The toggle block is rotatably connected to the base. The elastic unit drives the card connector to abut against the toggle block.

[0007] Preferably, the snap-fit ​​mechanism further includes an abutment block, the base has a sliding groove, the abutment block snaps into the end of the snap-fit ​​connector, the snap-fit ​​connector is slidably connected to the sliding groove, and the elastic unit is disposed between the snap-fit ​​connector and the sliding groove.

[0008] Preferably, the connecting shaft includes a first connecting rod, a second connecting rod, and a fastening spring. The first connecting rod is provided with a limiting head, and the inner wall of the second connecting rod is provided with a limiting groove. The fastening spring is disposed between the first connecting rod and the second connecting rod, and the limiting head abuts against the limiting groove by the fastening spring abutting against the first connecting rod.

[0009] Preferably, the connecting shaft further includes a first end cap and a second end cap, the first end cap being connected to the first connecting rod and the second end cap being connected to the second connecting rod.

[0010] Preferably, the actuating block is provided with a first abutting part and a second abutting part, the first abutting part and the second abutting part are arranged perpendicularly, and an arc-shaped surface is provided between the first abutting part and the second abutting part.

[0011] In the above technical solution, the universal wheel structure provided by this utility model has the following beneficial effects: This utility model uses an elastic unit to drive the locking connector to abut against the actuating block. When the actuating block is rotated, the locking connector of the locking mechanism can be driven to slide within the base, thereby enabling the symmetrically arranged locking blocks on the locking connector to engage with the locking grooves on both sides of the wheel body, thus locking both sides of the wheel body and improving the stability of the wheel body locking. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0013] Figure 1 A three-dimensional structural schematic diagram provided for an embodiment of this utility model; Figure 2 This is a schematic diagram of the wheel assembly provided for an embodiment of the present utility model; Figure 3 This is a schematic diagram of the internal structure of the base provided in an embodiment of the present utility model; Figure 4 This is a schematic diagram of the base assembly structure provided in an embodiment of the present utility model; Figure 5This is a schematic diagram of the connecting shaft portion provided in an embodiment of the present utility model; Figure 6 This is a schematic diagram of the assembly structure of the connecting shaft portion provided in an embodiment of the present utility model; Figure 7 This is a cross-sectional structural diagram provided for an embodiment of the present utility model.

[0014] Explanation of reference numerals in the attached figures: 1. Base; 11. Slide groove; 2. Connecting shaft; 21. First connecting rod; 22. Second connecting rod; 23. Fastening spring; 24. Limiting head; 25. First end cap; 251. First snap-fit ​​part; 26. Second end cap; 27. Limiting groove; 28. Arc snap-fit ​​part; 3. Wheel body; 31. Snap-fit ​​groove; 4. Snap-fit ​​mechanism; 41. Snap-fit ​​joint; 42. Elastic unit; 43. Actuating block; 431. First abutment part; 432. Second abutment part; 44. Snap-fit ​​block; 45. Abutment block. Detailed Implementation

[0015] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0016] Please see Figure 1 — Figure 7 A universal wheel structure includes a base 1, and further includes: The connecting shaft 2 is mounted on the base 1; The wheel body 3 is connected to both ends of the connecting shaft 2, and a snap-fit ​​groove 31 is provided on the outer wall of one side of the wheel body 3; The locking mechanism 4 is disposed inside the base 1. The locking mechanism 4 includes a locking head 41, an elastic unit 42 and a toggle block 43. The locking head 41 is slidably connected to the base 1. The locking head 41 is symmetrically provided with locking blocks 44. The elastic unit 42 is disposed between the base 1 and the locking head 41. The toggle block 43 is rotatably connected to the base 1. The elastic unit 42 drives the card connector 41 to abut against the toggle block 43.

[0017] As an embodiment provided by this utility model, such as Figure 3 As shown, a through hole is provided on the outer wall of the base 1 for the connecting shaft 2 to pass through. The connecting shaft 2 is rotatably connected to the base 1 through the through hole. Wheels 3 are connected to both ends of the connecting shaft 2. The two ends of the connecting shaft 2 are respectively connected to the two wheels 3 for transmission, so that the two wheels 3 can rotate synchronously.

[0018] Inside the base 1, there is also a snap-fit ​​mechanism 4. Specifically, the snap-fit ​​mechanism 4 includes a snap-fit ​​connector 41, an elastic unit 42, and a toggle block 43. The toggle block 43 is rotatably connected to the base 1, the snap-fit ​​connector 41 is slidably connected to the base 1, and the elastic unit 42 is disposed between the snap-fit ​​connector 41 and the base 1. The snap-fit ​​connector 41 is driven to abut against the toggle block 43 by the elastic unit 42.

[0019] As an embodiment provided by this utility model, the elastic unit 42 is a compression spring.

[0020] This utility model uses an elastic unit 42 to drive the locking connector 41 to abut against the actuating block 43. When the actuating block 43 is rotated, the locking connector 41 of the locking mechanism 4 can be driven to slide within the base 1, thereby causing the locking blocks 44 symmetrically arranged on the locking connector 41 to engage with the locking grooves 31 on the wheel bodies 3 on both sides, thereby locking the wheel bodies 3 on both sides and improving the stability of the locking of the wheel bodies 3.

[0021] As an embodiment provided by this utility model, such as Figure 4 As shown, the snap-fit ​​mechanism 4 also includes an abutment block 45. Specifically, a sliding groove 11 is provided on the base 1. The sliding groove 11 has a through structure on both sides of the base 1. A snap-fit ​​structure is provided at one end of the snap-fit ​​block 44, and a "U"-shaped structure is provided at the other end. The abutment block 45 snaps into the end of the snap-fit ​​block 44 where the snap-fit ​​structure is provided.

[0022] One end of the abutment block 45 is movably disposed within the slide groove 11, while the other end engages with the engaging structure on the locking block 44. When the locking block 44 slides on the base 1, the abutment block 45 connected by the engaging structure moves synchronously. Furthermore, the "U"-shaped structure at one end of the locking block 44 allows one end of the "U"-shaped structure to be located outside the slide groove 11, thereby enabling the locking block 44 to engage and lock with the two wheels 3 respectively.

[0023] As an embodiment provided by this utility model, such as Figure 4 As shown, the toggle block 43 is provided with a first abutting part 431 and a second abutting part 432. In the unlocked state, the first abutting part 431 abuts against the abutting block 45, and the elasticity of the elastic unit 42 drives the abutting block 45 to abut against the first abutting part 431, so as to ensure that the toggle block 43 will not rotate freely in the unlocked state.

[0024] When locking is required, the first abutment 431 is rotated by rotating the toggle block 43. The abutment block 45 abuts against the second abutment 432 through the arc-shaped surface between the first abutment 431 and the second abutment 432, thus completing the locking.

[0025] To unlock, simply rotate the toggle block 43 in the opposite direction.

[0026] Furthermore, such as Figure 5 , Figure 6 and Figure 7 As shown, the connecting shaft 2 includes a first connecting rod 21, a second connecting rod 22, and a fastening spring 23. A limiting head 24 is fixedly installed at the end of the first connecting rod 21, and a limiting groove 27 is formed on the inner wall of the second connecting rod 22. Specifically, the limiting groove 27 is generally L-shaped. The first connecting rod 21 can be slidably connected in the limiting groove 27 through the limiting head 24 at its end. The fastening spring 23 is disposed between the first connecting rod 21 and the second connecting rod 22, in the limiting groove 27. An arc-shaped locking part 28 is provided at one end of the "L"-shaped structure. The end of the arc-shaped locking part 28 is an arc-shaped structure, and the rest is a linear structure. One end of the limiting head 24 is an arc-shaped structure. Under the action of the fastening spring 23, the limiting head 24 can be driven to move toward the arc-shaped locking part 28, so that one end of the arc-shaped structure of the limiting head 24 is locked into the arc-shaped locking part 28, so that the first connecting rod 21 and the second connecting rod 22 can be connected to the base 1. The fastening spring 23 is a compression spring.

[0027] Furthermore, key blocks for connecting to wheel bodies 3 are provided at the ends of the first connecting rod 21 and the second connecting rod 22, so that the two wheel bodies 3 can be connected to the first connecting rod 21 and the second connecting rod 22 respectively, and the two wheel bodies 3 located on both sides of the base 1 can rotate synchronously.

[0028] Furthermore, as an embodiment provided by this utility model, it also includes a first end cap 25 and a second end cap 26. A mounting groove is provided at the end of the wheel body 3, specifically a circular structure. The connecting shaft 2 also includes a first end cap 25 and a second end cap 26. The first end cap 25 is snapped onto one end of the first connecting rod 21, and the second end cap 26 is snapped onto one end of the second connecting rod 22. Specifically, a first snap-fit ​​member 251 is provided at the end of the first end cap 25, and the first end cap 25 is snapped onto the end of the first connecting rod 21 through the first snap-fit ​​member 251. Specifically, as shown... Figure 7 As shown, the first snap-fit ​​member 251 is snapped between the first connecting rod 21 and the base 1 to prevent the first connecting rod 21 from being accidentally pressed down. When disassembly is required, the first end cap 25 needs to be pried open. For this reason, the edge of the first end cap 25 is designed with a wedge-shaped structure to facilitate subsequent disassembly. The second end cap 26 is directly snapped to the end of the second connecting rod 26 through a conventional snap-fit ​​structure at its end.

[0029] The design of the connecting shaft 2 allows for quick connection of the two wheel bodies 3 to the base 1. In addition, if one wheel body 3 is damaged, the single wheel body 3 can be quickly replaced.

[0030] The compression spring mentioned in this article has an elastic coefficient that meets the technical requirements of this utility model.

[0031] Those skilled in the art will understand that other similar connection methods can also achieve this utility model. For example, welding, bonding, or screwing.

[0032] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A universal wheel structure, comprising a base (1), characterized in that, Also includes: The connecting shaft (2) is set on the base (1); The wheel body (3) is connected to both ends of the connecting shaft (2), and a snap-fit ​​groove (31) is provided on the outer wall of one side of the wheel body (3); The snap-fit ​​mechanism (4) is provided inside the base (1). The snap-fit ​​mechanism (4) includes a snap-fit ​​connector (41), an elastic unit (42), and a toggle block (43). The snap-fit ​​connector (41) is slidably connected to the base (1). Snap-fit ​​blocks (44) are symmetrically arranged on the snap-fit ​​connector (41). The elastic unit (42) is located between the base (1) and the snap-fit ​​connector (41). The toggle block (43) is rotatably connected to the base (1). The elastic unit (42) drives the card connector (41) to abut against the toggle block (43).

2. The universal wheel structure according to claim 1, characterized in that, The snap-fit ​​mechanism (4) further includes an abutment block (45), a groove (11) is provided on the base (1), the abutment block (45) is snapped into the end of the snap-fit ​​connector (41), the snap-fit ​​connector (41) is slidably connected to the groove (11), and the elastic unit (42) is disposed between the snap-fit ​​connector (41) and the groove (11).

3. The universal wheel structure according to claim 1, characterized in that, The connecting shaft (2) includes a first connecting rod (21), a second connecting rod (22) and a fastening spring (23). The first connecting rod (21) is provided with a limiting head (24), and the inner wall of the second connecting rod (22) is provided with a limiting groove (27). The fastening spring (23) is disposed between the first connecting rod (21) and the second connecting rod (22). The fastening spring (23) abuts against the first connecting rod (21), so that the limiting head (24) abuts against the limiting groove (27).

4. The universal wheel structure according to claim 3, characterized in that, The connecting shaft (2) also includes a first end cap (25) and a second end cap (26), the first end cap (25) being connected to the first connecting rod (21) and the second end cap (26) being connected to the second connecting rod (22).

5. The universal wheel structure according to claim 2, characterized in that, The actuating block (43) is provided with a first abutting part (431) and a second abutting part (432). The first abutting part (431) and the second abutting part (432) are arranged perpendicularly, and an arc-shaped surface is provided between the first abutting part (431) and the second abutting part (432).

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