Height-adjustable caster wheel
Patent Information
- Application Number
- CN202522285278.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-29
- Publication Date
- 2026-09-08
- Estimated Expiration
- 2035-10-29
AI Technical Summary
[0002]调节高度脚轮的诞生，源于工业生产、医疗护理、办公家居等多场景中对设备“移动性”与“稳定性”“高度适配性”的双重需求升级：传统设备往往依赖普通脚轮实现移动，再通过单独的支撑结构（如螺杆、垫块）找平或固定，不仅操作繁琐、协同性差，还可能因地面不平整导致设备晃动、精度下降甚至安全隐患，而随着精密制造技术（如丝杆加工、微型驱动装置）的成熟，集成了“移动滚轮”与“高度调节+稳定支撑”功能的脚轮应运而生，既简化了设备底部结构，又能高效解决移动后快速找平、灵活适配不同高度需求的痛点，成为衔接设备动态移动与静态稳定的关键部件
通过螺纹旋转高度调节及限位缓冲机构的设置，由图可知，本实用新型通过在脚轮支撑固定支架的中部设置有螺纹旋转高度调节组件，且在顶部调节支撑平台调节高度的过程中，其下端通过两侧的限位伸缩支杆与脚轮支撑固定支架顶部固定连接，在高度调节时，两端的限位伸缩支杆会辅助顶部的平台进行高度调节，从而对中部的实心固定支架进行重力的分摊，且在实心固定支架与顶部调节支撑平台之间设置有顶部套接轴承，在下端的实心固定支架旋转调节过程中，顶部套接轴承会跟随实心固定支架进行旋转从而对顶部调节支撑平台进行缓慢高度调节作业，增加了整体调节的稳定性。
Smart Images
Figure CN224726690U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of caster adjustment technology, and in particular to a height-adjustable caster. Background Technology
[0002] The emergence of height-adjustable casters stems from the upgraded demands for both "mobility," "stability," and "height adaptability" of equipment in various scenarios such as industrial production, medical care, and office / home environments. Traditional equipment often relies on ordinary casters for movement, followed by leveling or fixing using separate support structures (such as screws or pads). This is not only cumbersome and lacks coordination, but can also lead to equipment shaking, decreased precision, or even safety hazards due to uneven ground. However, with the maturity of precision manufacturing technologies (such as lead screw processing and micro-drive devices), casters integrating "moving rollers" and "height adjustment + stable support" functions have emerged. They simplify the bottom structure of equipment and efficiently solve the pain points of quick leveling after movement and flexible adaptation to different height requirements, becoming a key component connecting the dynamic movement and static stability of equipment.
[0003] However, as the caster supports the load at the top, the higher it is adjusted, the longer the height adjustment rod extends. Since the weight of the load at the top remains constant, the pressure on the height adjustment rod will continue to increase. Over time, the height adjustment rod will deform, and in severe cases, it may even break, affecting the subsequent use of the caster.
[0004] Therefore, we provide an adjustable height caster to solve the above problems. Utility Model Content
[0005] The purpose of this invention is to provide an adjustable height caster to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, the present invention provides the following technical solution: an adjustable height caster, comprising a caster support fixing bracket and a threaded rotation height adjustment and limiting buffer mechanism, wherein the upper and lower sides of the caster support fixing bracket are provided with the threaded rotation height adjustment and limiting buffer mechanism; The threaded rotation height adjustment and limiting buffer mechanism includes an internal thread auxiliary adjustment component, a threaded rotation height adjustment component, a limiting top movable component, and a bottom buffer caster component. The internal thread auxiliary adjustment component is provided in the middle of the caster support fixing bracket, and the threaded rotation height adjustment component is provided inside the internal thread auxiliary adjustment component. The limiting top movable component is provided at both ends of the upper side of the caster support fixing bracket, and the bottom buffer caster component is provided on both sides of the lower end of the caster support fixing bracket.
[0007] Preferably, the internal thread auxiliary adjustment component includes a semi-enclosed fixing frame and a preset internal thread. The semi-enclosed fixing frame is fixedly sleeved in the middle of the caster support fixing bracket, and the preset internal thread is fixedly connected to the inner side of the semi-enclosed fixing frame.
[0008] Preferably, the threaded rotation height adjustment assembly includes a solid fixed bracket, a fully enclosed external thread, and a top sleeve bearing. The solid fixed bracket is sleeved on the inner side of the semi-enclosed fixed frame, and the fully enclosed external thread is sleeved on the outer side of the solid fixed bracket. The solid fixed bracket is threadedly connected to the semi-enclosed fixed frame through the outer fully enclosed external thread, and the top of the solid fixed bracket is fixedly sleeved with a top sleeve bearing.
[0009] Preferably, the limiting top movable component includes a fixed base, a limiting telescopic support rod, and a top adjustable support platform. The top two ends of the caster support fixed bracket are fixedly connected to the fixed base, the upper side of the fixed base is movably connected to the limiting telescopic support rod, and the top of the limiting telescopic support rod is fixedly connected to the top adjustable support platform.
[0010] Preferably, the bottom buffer caster assembly includes an elastic telescopic buffer module, a sleeved damping spring, a caster fixing bracket, a sleeved rotating bracket, and a rotating caster. The elastic telescopic buffer module is fixedly connected to both ends of the lower side of the caster support fixing bracket. The sleeved damping spring is sleeved on the surface of the elastic telescopic buffer module. The caster fixing bracket is fixedly connected to the lower end of the elastic telescopic buffer module. The caster fixing bracket is movably sleeved with the caster support fixing bracket through a sleeved rotating bracket on one side. A rotating caster is threadedly connected to one side of the caster fixing bracket.
[0011] Compared with the prior art, the beneficial effects of this utility model are: As shown in the figure, this utility model features a threaded rotation height adjustment component in the middle of the caster support bracket. During the height adjustment of the top adjustment support platform, its lower end is fixedly connected to the top of the caster support bracket via limit telescopic support rods on both sides. During height adjustment, the limit telescopic support rods at both ends assist the top platform in height adjustment, thereby distributing the weight of the solid support bracket in the middle. Furthermore, a top sleeve bearing is installed between the solid support bracket and the top adjustment support platform. During the rotation adjustment of the lower solid support bracket, the top sleeve bearing rotates with the solid support bracket, thus slowly adjusting the height of the top adjustment support platform, increasing the overall stability of the adjustment. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall appearance structure of this utility model; Figure 2This is a schematic diagram of the bottom structure of the overall appearance of this utility model; Figure 3 This is a schematic diagram of the internal structure of the top of the overall appearance of this utility model; Figure 4 This is a schematic diagram of the overall internal structure of this utility model; The diagram shows the following components: 1. Caster support bracket; 2. Threaded rotation height adjustment and limit buffer mechanism; 21. Internal thread auxiliary adjustment component; 211. Semi-enclosed fixed frame; 212. Preset internal thread; 22. Threaded rotation height adjustment component; 221. Solid fixed bracket; 222. Fully enclosed external thread; 223. Top sleeve bearing; 23. Limiting top movable component; 231. Fixed base; 232. Limiting telescopic support rod; 233. Top adjusting support platform; 24. Bottom buffer caster assembly; 241. Elastic telescopic buffer module; 242. Sleeve damping spring; 243. Caster fixed bracket; 244. Sleeve rotating bracket; 245. Rotating caster. Detailed Implementation
[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0014] Please see Figure 1-4 As shown, this utility model provides a technical solution: an adjustable height caster, including a caster support and fixing bracket 1 and a threaded rotation height adjustment and limiting buffer mechanism 2, wherein the upper and lower sides of the caster support and fixing bracket 1 are provided with the threaded rotation height adjustment and limiting buffer mechanism 2; The threaded rotation height adjustment and limit buffer mechanism 2 includes an internal thread auxiliary adjustment component 21, a threaded rotation height adjustment component 22, a limit-type top movable component 23, and a bottom buffer caster component 24. The internal thread auxiliary adjustment component 21 is provided in the middle of the caster support fixing bracket 1, the threaded rotation height adjustment component 22 is provided inside the internal thread auxiliary adjustment component 21, the limit-type top movable component 23 is provided at both ends of the upper side of the caster support fixing bracket 1, and the bottom buffer caster component 24 is provided on both sides of the lower end of the caster support fixing bracket 1.
[0015] Furthermore, the internal thread auxiliary adjustment component 21 includes a semi-enclosed fixing frame 211 and a preset internal thread 212. The semi-enclosed fixing frame 211 is fixedly sleeved in the middle of the caster support fixing bracket 1, and the preset internal thread 212 is fixedly connected to the inner side of the semi-enclosed fixing frame 211.
[0016] Furthermore, the threaded rotation height adjustment assembly 22 includes a solid fixed bracket 221, a fully enclosed external thread 222, and a top sleeve bearing 223. The solid fixed bracket 221 is sleeved on the inner side of the semi-enclosed fixed frame 211, and the fully enclosed external thread 222 is sleeved on the outer side of the solid fixed bracket 221. The solid fixed bracket 221 is threadedly connected to the semi-enclosed fixed frame 211 through the outer fully enclosed external thread 222. The top sleeve bearing 223 is fixedly sleeved on the top of the solid fixed bracket 221, and a top sleeve bearing 223 is provided between the solid fixed bracket 221 and the top adjustment support platform 233. During the rotation adjustment of the lower solid fixed bracket 221, the top sleeve bearing 223 will rotate with the solid fixed bracket 221 to slowly adjust the height of the top adjustment support platform 233, thereby increasing the overall adjustment stability.
[0017] Furthermore, the limiting top movable component 23 includes a fixed base 231, a limiting telescopic support rod 232, and a top adjustable support platform 233. The fixed base 231 is fixedly connected to both ends of the top of the caster support fixed bracket 1. The limiting telescopic support rod 232 is movably connected to the upper side of the fixed base 231. The top adjustable support platform 233 is fixedly connected to the top of the limiting telescopic support rod 232. As shown in the figure, the top adjustable support platform 233 performs auxiliary height adjustment through the lower limiting telescopic support rod 232. During the height increase, the limiting telescopic support rods 232 at both ends can provide auxiliary support for the upper top adjustable support platform 233, and can distribute the weight of the solid fixed bracket 221 in the middle, preventing the solid fixed bracket 221 from breaking due to the height increase.
[0018] Furthermore, the bottom buffer caster assembly 24 includes an elastic telescopic buffer module 241, a sleeved damping spring 242, a caster fixing bracket 243, a sleeved rotating bracket 244, and a rotating caster 245. The elastic telescopic buffer module 241 is fixedly connected to both ends of the lower side of the caster support fixing bracket 1. The sleeved damping spring 242 is sleeved on the surface of the elastic telescopic buffer module 241. The caster fixing bracket 243 is fixedly connected to the lower end of the elastic telescopic buffer module 241. The caster fixing bracket 243 is movably sleeved with the caster support fixing bracket 1 through the sleeved rotating bracket 244 on one side. The rotating caster 245 is threadedly connected to one side of the caster fixing bracket 243.
[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A height-adjustable caster, comprising a caster support and fixing bracket (1) and a threaded rotation height adjustment and limiting buffer mechanism (2), characterized in that: The upper and lower sides of the caster support fixing bracket (1) are provided with threaded rotation height adjustment and limit buffer mechanism (2). The threaded rotation height adjustment and limiting buffer mechanism (2) includes an internal thread auxiliary adjustment component (21), a threaded rotation height adjustment component (22), a limiting top movable component (23), and a bottom buffer caster component (24). The internal thread auxiliary adjustment component (21) is provided in the middle of the caster support fixing bracket (1), and the threaded rotation height adjustment component (22) is provided on the inner side of the internal thread auxiliary adjustment component (21). The limiting top movable component (23) is provided at both ends of the upper side of the caster support fixing bracket (1), and the bottom buffer caster component (24) is provided on both sides of the lower end of the caster support fixing bracket (1).
2. The height-adjustable caster according to claim 1, characterized in that, The internal thread auxiliary adjustment component (21) includes a semi-enclosed fixing frame (211) and a preset internal thread (212). The caster support fixing bracket (1) is fixedly sleeved with the semi-enclosed fixing frame (211), and the inner side of the semi-enclosed fixing frame (211) is fixedly connected with the preset internal thread (212).
3. The height-adjustable caster according to claim 2, characterized in that, The threaded rotation height adjustment assembly (22) includes a solid fixed bracket (221), a fully enclosed external thread (222), and a top sleeve bearing (223). The solid fixed bracket (221) is sleeved on the inner side of the semi-enclosed fixed frame (211), and the fully enclosed external thread (222) is sleeved on the outer side of the solid fixed bracket (221). The solid fixed bracket (221) is threadedly connected to the semi-enclosed fixed frame (211) through the outer fully enclosed external thread (222). The top of the solid fixed bracket (221) is fixedly sleeved with a top sleeve bearing (223).
4. The height-adjustable caster according to claim 1, characterized in that, The limiting top movable component (23) includes a fixed base (231), a limiting telescopic support rod (232), and a top adjustable support platform (233). The fixed base (231) is fixedly connected to both ends of the top of the caster support fixed bracket (1). The limiting telescopic support rod (232) is movably connected to the upper side of the fixed base (231). The top adjustable support platform (233) is fixedly connected to the top of the limiting telescopic support rod (232).
5. The height-adjustable caster according to claim 1, characterized in that, The bottom buffer caster assembly (24) includes an elastic telescopic buffer module (241), a sleeved damping spring (242), a caster fixing bracket (243), a sleeved rotating bracket (244), and a rotating caster (245). The elastic telescopic buffer module (241) is fixedly connected to both ends of the lower side of the caster support fixing bracket (1). The sleeved damping spring (242) is sleeved on the surface of the elastic telescopic buffer module (241). The caster fixing bracket (243) is fixedly connected to the lower end of the elastic telescopic buffer module (241). The caster fixing bracket (243) is movably sleeved with the caster support fixing bracket (1) through a sleeved rotating bracket (244) on one side. A rotating caster (245) is threadedly connected to one side of the caster fixing bracket (243).