Trunk trundle easy to disassemble
By using a separate design for the wheel base and caster, along with a U-shaped buckle, the problem of difficult disassembly of suitcase casters is solved, achieving the effects of quick replacement and resource conservation.
Patent Information
- Application Number
- CN202520668687.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-04-10
AI Technical Summary
Existing suitcase casters are difficult to remove when damaged, leading to wasted resources and difficulties in after-sales maintenance.
It adopts a separate design for the wheel seat and casters, and uses the cooperation of U-shaped buckles and rotating shafts to achieve quick disassembly and assembly through quick release buttons and return springs, combined with pin locking to prevent accidental fall-off.
It enables quick replacement of casters, reduces resource waste, simplifies the maintenance process, and lowers the difficulty of maintenance.
Smart Images
Figure CN223934467U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of luggage caster technology, and in particular to a technology for an easily detachable luggage caster. Background Technology
[0002] In daily use, the casters are the most easily worn parts of a suitcase. Existing suitcase casters typically consist of a caster, a wheel housing, and a swivel axle. The swivel axle is fixedly connected to the caster, and the wheel housing is rotatably connected to it. The wheel housing is fixed to the bottom of the suitcase with screws. This design usually hides the fixing screws inside the wheel housing housing. When the caster ages or becomes damaged, the housing needs to be pried open for disassembly, making caster replacement difficult for users who heavily rely on after-sales service. Furthermore, after disassembly, the wheel housing and caster must be replaced as a whole, while the wheel housing is usually not prone to aging or damage, resulting in wasted resources. Utility Model Content
[0003] In view of the defects existing in the prior art, the technical problem to be solved by this utility model is to provide an easy-to-disassemble luggage caster that is easy to replace and can reduce resource waste.
[0004] To solve the above-mentioned technical problems, this utility model provides an easily detachable suitcase caster, including a wheel seat, a rotating shaft, and a wheel bracket. The upper end of the rotating shaft is rotatably connected to the wheel seat, and the lower part of the wheel bracket is provided with a caster for driving the suitcase to slide. Its features are as follows:
[0005] The wheel bracket is provided with a U-shaped buckle that can slide left and right. The two inner sides of the U-shaped buckle are respectively provided with outwardly recessed arc-shaped grooves. The outer wall of the wheel bracket is provided with a quick release button for pushing the U-shaped buckle to the left. The quick release button is directly opposite the bottom edge of the U-shaped buckle.
[0006] The lower end of the rotating shaft is located inside the wheel bracket. An annular groove for the U-shaped buckle to clamp is provided at the lower end of the rotating shaft. The two sides of the U-shaped buckle are engaged in the annular groove of the rotating shaft, which interferes with the vertical movement of the rotating shaft. The two arc-shaped grooves of the U-shaped buckle are located on the right side of the rotating shaft. The rotating shaft is in clearance fit with the inner cavity of the wheel bracket. A return spring is provided inside the wheel bracket. The right end of the return spring is fixed on the bottom edge of the U-shaped buckle, and the left end of the return spring is fixed on the inner cavity wall between the U-shaped buckle and the rotating shaft.
[0007] The outer diameter of the rotating shaft is smaller than the diameter of the arc-shaped groove of the U-shaped buckle.
[0008] Furthermore, a pin is detachably mounted on the wheel bracket, and the inner end of the pin abuts against the left end of the U-shaped buckle, interfering with the leftward movement of the U-shaped buckle.
[0009] The easily detachable suitcase caster provided by this utility model adopts a modular structure with separate wheel seat and caster. Through the cooperation of U-shaped buckle and rotating shaft, the rotating shaft can be quickly separated from the wheel bracket, making replacement easy, preserving the undamaged wheel seat, and avoiding resource waste. The locking buckle with pin can prevent the caster from accidentally falling off. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the structure of the detachable suitcase casters according to an embodiment of the present utility model;
[0011] Figure 2 This is an exploded view of the detachable suitcase casters according to an embodiment of this utility model;
[0012] Figure 3 This is a schematic diagram of the structure of the U-shaped buckle according to an embodiment of the present invention. Detailed Implementation
[0013] The embodiments of this utility model are described in further detail below with reference to the accompanying drawings. However, these embodiments are not intended to limit this utility model. Any similar structures or variations thereof that adopt this utility model should be included in the protection scope of this utility model. The commas in this utility model all indicate the relationship between and.
[0014] like Figures 1-3 As shown in the figure, the detachable suitcase caster provided in this embodiment of the utility model includes a wheel seat 1, a rotating shaft 2 and a wheel bracket 3. The upper end of the rotating shaft 2 is rotatably connected to the wheel seat 1, and the lower part of the wheel bracket 3 is provided with a caster 4 for driving the suitcase to slide.
[0015] The wheel bracket 3 is provided with a U-shaped buckle 31 that can slide left and right. The two inner sides of the U-shaped buckle 31 are respectively provided with outwardly recessed arc-shaped grooves 311. The outer wall of the wheel bracket 3 is provided with a quick release button 32 for pushing the U-shaped buckle 31 to the left. The quick release button 32 is directly opposite to the bottom edge of the U-shaped buckle 31.
[0016] The lower end of the rotating shaft 2 is set inside the wheel bracket 3. The lower end of the rotating shaft 2 has an annular groove 21 for the U-shaped buckle 31 to clamp. The two sides of the U-shaped buckle 31 are inserted into the annular groove 21 of the rotating shaft 2, which interferes with the vertical movement of the rotating shaft 2. The two arc-shaped grooves 311 of the U-shaped buckle 31 are located on the right side of the rotating shaft 2. The rotating shaft 2 is in clearance fit with the inner cavity of the wheel bracket 3. A return spring 33 is set inside the wheel bracket 3. The right end of the return spring 33 is fixed on the U-shaped bottom edge of the U-shaped buckle 31, and the left end of the return spring 33 is fixed on the inner cavity wall between the U-shaped buckle 31 and the rotating shaft 2.
[0017] The outer diameter of the rotating shaft 2 is smaller than the diameter of the arc groove 311 of the U-shaped buckle.
[0018] In this embodiment of the present invention, a safety screw 34 is installed on the wheel bracket 3 by means of thread engagement. The inner end of the safety screw 34 abuts against the left end of the U-shaped buckle 31, interfering with the leftward movement of the U-shaped buckle 31. In other embodiments of the present invention, other detachable pin structures can also be used on the wheel bracket 3 to abut against the U-shaped buckle 31.
[0019] This embodiment of the utility model enables quick assembly and disassembly of the caster from the wheel seat. The specific usage method is as follows:
[0020] To disassemble the caster, first remove the safety screw 34, then press the quick release button 32 to push the U-shaped buckle 31 inward. When the U-shaped buckle 31 moves to the point where the rotating shaft 2 and the arc-shaped groove 311 are vertically aligned, the U-shaped buckle 31 no longer blocks the rotating shaft 2. Pull down the wheel bracket 3 to separate the wheel bracket 3 from the wheel seat 1.
[0021] To install the caster, press the quick-release button 32 to push the U-shaped buckle 31 inward. When the U-shaped buckle 31 moves to the point where the rotating shaft 2 and the arc-shaped groove 311 are vertically aligned, the wheel bracket 3 and the wheel seat 1 are brought together. At this time, release the quick-release button 32. The U-shaped buckle 31 rebounds due to the elasticity of the return spring 33, and the non-grooved part of the U-shaped buckle 31 engages with the annular groove 21 to fix the wheel bracket on the rotating shaft 2, thus completing the caster installation. Reinstall the safety screw 34 to hold the U-shaped buckle in place, preventing the quick-release button 32 from being pressed down, thereby preventing the wheel bracket 3 from accidentally falling off.
Claims
1. A detachable suitcase caster, comprising a wheel seat, a rotating shaft, and a wheel bracket, wherein the upper end of the rotating shaft is rotatably connected to the wheel seat, and the lower part of the wheel bracket is provided with a caster for driving the suitcase to slide, characterized in that: The wheel bracket is provided with a U-shaped buckle that can slide left and right. The two inner sides of the U-shaped buckle are respectively provided with outwardly recessed arc-shaped grooves. The outer wall of the wheel bracket is provided with a quick release button for pushing the U-shaped buckle to the left. The quick release button is directly opposite the bottom edge of the U-shaped buckle. The lower end of the rotating shaft is located inside the wheel bracket. An annular groove for the U-shaped buckle to clamp is provided at the lower end of the rotating shaft. The two sides of the U-shaped buckle are engaged in the annular groove of the rotating shaft, which interferes with the vertical movement of the rotating shaft. The two arc-shaped grooves of the U-shaped buckle are located on the right side of the rotating shaft. The rotating shaft is in clearance fit with the inner cavity of the wheel bracket. A return spring is provided inside the wheel bracket. The right end of the return spring is fixed on the bottom edge of the U-shaped buckle, and the left end of the return spring is fixed on the inner cavity wall between the U-shaped buckle and the rotating shaft. The outer diameter of the rotating shaft is smaller than the diameter of the arc-shaped groove of the U-shaped buckle.
2. The easily detachable suitcase caster according to claim 1, characterized in that: A pin is detachably mounted on the wheel bracket. The inner end of the pin abuts against the left end of the U-shaped buckle, interfering with the leftward movement of the U-shaped buckle.