Orthogonal universal mute caster with double precision bearings
The design of dual precision bearing orthogonal omnidirectional silent casters solves the problems of high noise and insufficient limit of traditional casters, achieving 360-degree movement and noise reduction, and improving the stability and ease of use of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-26
- Publication Date
- 2026-03-31
AI Technical Summary
Traditional casters on water dispenser trays are noisy, lack limit function, and cannot move precisely.
It adopts dual precision bearing orthogonal omnidirectional silent casters, which are fixed by a combination of plastic-coated bearing wheels, brackets, axle pins, axle clips and flat washers. Combined with limit switches and the orthogonal arrangement of precision bearings, it can achieve 360-degree omnidirectional movement and reduce noise, and has a limit function.
It enables 360-degree directional movement of the casters, improving smoothness of sliding and reducing noise. It also has a limit function, which enhances the practicality of the drinking water equipment.
Smart Images
Figure CN224060775U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of caster device technology, and in particular to a double precision bearing orthogonal universal silent caster. Background Technology
[0002] Casters are mostly used on equipment with mobility functions. Different types of casters are usually used for different equipment. In our company's traditional spectrum water drinking equipment, the placement tray for placing water buckets needs to be equipped with casters to facilitate the movement and placement of water buckets.
[0003] Traditional casters are mostly single-bearing or sliding structures, which have problems such as loud noise when under load and no movement limit, making it easy for the bucket to move in any direction. On the other hand, silent casters mostly use a single soft wheel (such as a rubber wheel) to reduce noise, but they have problems such as a large wheel diameter, which cannot be well adapted to the bucket tray, and a large omnidirectional turning radius. The mechanical clearance between the bearing and the steering structure leads to vibration transmission, which aggravates noise and affects the stability of the equipment. Utility Model Content
[0004] This invention provides a dual-precision bearing orthogonal universal silent caster to solve the problems of low precision, high noise, and lack of limit function of existing casters on water dispenser water supply trays.
[0005] To address the aforementioned problems, this utility model provides a dual-precision bearing orthogonal universal silent caster, comprising: a plastic-coated bearing wheel, a bracket, a pin, a clamp, and a flat washer. The bracket has two support plates at its bottom, which are positioned opposite each other, forming a mounting groove between them. The plastic-coated bearing wheel is fixed within the mounting groove by the flat washer, the pin, and the clamp. A limit switch is provided on one of the support plates on the side away from the plastic-coated bearing wheel, and the limit switch is used to limit the movement of the plastic-coated bearing wheel.
[0006] In a preferred embodiment, the limit switch includes an elastic fixing plate and a limit pin. One end of the elastic fixing plate is fixed to the support plate, and the other end of the elastic fixing plate is connected to the limit pin. A limit pin hole adapted to the limit pin is provided on the support plate. The limit pin can pass through the limit pin hole and contact the plastic-coated bearing wheel to limit the plastic-coated bearing wheel.
[0007] In a preferred embodiment, specifically, at least one positioning hole is provided on the plastic-coated bearing wheel, the positioning hole corresponding to the limiting pin hole, and the limiting pin can be inserted into the positioning hole when it passes through the limiting pin hole.
[0008] In a preferred embodiment, specifically, the side of the flat pad facing the plastic-coated bearing wheel is provided with a nylon layer, and the support plate is provided with injection holes, which are provided corresponding to the flat pad.
[0009] In a preferred embodiment, the caster further includes a precision bearing, which is mounted vertically on the top of the bracket to form an orthogonally arranged bearing assembly. The precision bearing is used to fix the caster to the bucket tray.
[0010] In a preferred embodiment, the bracket includes a fixed base and a fixed shaft. The lower end of the fixed base is provided with the support plate, and the upper end of the fixed base is provided with a fixing hole. The fixed shaft is fixed in the fixing hole by a detachable structure, and the fixed shaft is used to install a precision bearing.
[0011] In a preferred embodiment, a fixing groove is provided on the periphery of the fixing hole, and an embedding protrusion adapted to the fixing groove is provided on the periphery of one end of the fixing shaft facing the fixing hole.
[0012] In a preferred embodiment, specifically, a bolt structure is provided at one end of the fixed shaft facing the fixed hole, and a through hole is provided at the bottom of the fixed hole.
[0013] The beneficial effects of this utility model are as follows: This utility model proposes a double precision bearing orthogonal universal silent caster, which realizes the 360-degree directional movement function of the caster by using high precision bearings, while improving the smoothness of the caster's sliding and reducing noise, and also has a limit function. When applied to our company's spectrum water drinking equipment, it greatly improves the practical effect of the drinking equipment. Attached Figure Description
[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 A schematic diagram of the overall structure of the dual-precision bearing orthogonal universal silent caster is shown.
[0016] Figure 2 A front view of a dual-precision-bearing orthogonal universal silent caster is shown.
[0017] Figure 3 An exploded view of the structure of a dual-precision-bearing orthogonal universal silent caster is shown.
[0018] Figure 4 A left view of a dual precision bearing orthogonal omnidirectional silent caster is shown;
[0019] Figure 5 The right view of the dual precision bearing orthogonal omnidirectional silent caster is shown;
[0020] Figure 6 This shows a view of the support structure from a top-down perspective;
[0021] Figure 7 It shows Figure 2 A magnified view of part A in the diagram.
[0022] Explanation of key component symbols:
[0023] 100-Plastic coated bearing wheel; 200-Bracket; 210-Support plate; 220-Limit switch; 221-Elastic fixing piece; 222-Limit pin; 230-Limit pin hole; 240-Injection hole; 250-Fixing seat; 251-Fixing hole; 252-Fixing groove; 253-Through hole; 260-Fixing shaft; 300-Shaft pin; 400-Shaft clip; 500-Flat washer; 510-Nylon layer; 600-Precision bearing. Detailed Implementation
[0024] The embodiments of this utility model are described in detail below. Examples of these 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. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between 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.
[0028] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0029] Please see Figures 1-7 This utility model provides a double precision bearing orthogonal universal silent caster (hereinafter referred to as caster). The caster includes a plastic-coated bearing wheel 100, a bracket 200, a shaft pin 300, a shaft clip 400, and a flat washer 500. Two support plates 210 are provided at the bottom of the bracket 200. The two support plates 210 are arranged opposite to each other, and an installation groove is formed between the two support plates 210.
[0030] Specifically, the bracket 200 is the main load-bearing and force-transmitting structural component, and the plastic-coated bearing wheel 100 is fixed between the support plates 210 by a combination of axle pins 300, flat washers 500, and axle clips 400. The plastic-coated bearing wheel 100 adopts a steel-rubber combined structure, and the bearing wheel surface is further coated with rubber (polyurethane) to reduce friction noise with the ground during operation and achieve a low-noise effect.
[0031] This structure achieves 360° omnidirectional flexible steering through a dual precision bearing orthogonal layout, while reducing friction noise through the precise fit between the bracket 200 and the axle pin 300. This caster combines high load-bearing capacity, low wear characteristics, and shock-absorbing and quiet operation, making it suitable for our company's precision instruments such as spectrum water drinking equipment.
[0032] Please continue reading. Figures 1-4 Based on the above scheme, a limit switch 220 is provided on one of the support plates 210 on the side away from the plastic-coated bearing wheel 100. The limit switch 220 is used to limit the movement of the plastic-coated bearing wheel 100.
[0033] Specifically, the limit switch 220 includes an elastic fixing piece 221 and a limit pin 222. One end of the elastic fixing piece 221 is fixed to the support plate 210, and the other end of the elastic fixing piece 221 is connected to the limit pin 222. A limit pin hole 230 adapted to the limit pin 222 is provided on the support plate 210. When in use, the limit pin 222 can be inserted into the limit pin hole 230. Furthermore, the limit pin 222 can pass through the limit pin hole 230 and contact the plastic-coated bearing wheel 100 to limit the plastic-coated bearing wheel 100.
[0034] Preferably, at least one positioning hole (not shown in the attached figure) is provided on the plastic-coated bearing wheel 100. The positioning hole corresponds to the limiting pin hole 230. When the limiting pin 222 passes through the limiting pin hole 230, it can be inserted into the positioning hole, thereby locking the plastic-coated bearing wheel 100. At the same time, pulling out the limiting pin 222 can restore the rotation of the plastic-coated bearing wheel 100, which greatly improves the limiting ability of the caster. At the same time, the structure is simple, low in cost, and has excellent effect.
[0035] Please see Figure 2 and Figure 7 A nylon layer 510 is provided on the side of the flat pad 500 facing the plastic-coated bearing wheel 100. An injection hole 240 is provided on the support plate 210, and multiple lubrication holes are provided on the flat pad 500. The multiple lubrication holes are all connected to the nylon layer. The nylon layer 510 can be provided with lubricating cloth or lubricating foam. During production, lubricating grease can be injected into the flat pad 500 through the injection hole 240. The lubricating grease is further stored in the nylon layer 510 to further lubricate the balls of the plastic-coated bearing wheel 100. This not only improves the sliding ability of the plastic-coated bearing wheel 100, but also greatly reduces the noise generated during sliding.
[0036] Please continue reading. Figures 1-4 The caster also includes a precision bearing 600, which is vertically mounted on the top of the bracket 200, forming an orthogonally arranged bearing assembly with the plastic-coated bearing wheel 100. The two are fixed by the bracket 200, and the radial and axial linkage enables 360-degree omnidirectional rotation and movement, forming a compact load-bearing structure. The precision bearing 600 is used to fix the caster to the bucket tray. This structure achieves 360° omnidirectional flexible steering through the orthogonal layout of the two precision bearings, while the precision fit between the bracket 200 and the axle pin 300 greatly reduces friction noise.
[0037] Please continue reading. Figures 3-6Based on the above scheme, the bracket 200 includes a fixed base 250 and a fixed shaft 260. The lower end of the fixed base 250 is provided with a support plate 210, and the upper end of the fixed base 250 is provided with a fixing hole 251. The fixed shaft 260 is fixed in the fixing hole 251 by a detachable structure. The fixed shaft 260 is used to install the precision bearing 600.
[0038] Specifically, during assembly, the fixed shaft 260 is assembled with the precision bearing 600, and the fixed shaft 260 is further fixed in the fixing hole 251. Assembly is carried out by means of bolts or other detachable methods, which greatly improves the ease of assembly.
[0039] Preferably, a fixing groove 252 is provided on the periphery of the fixing hole 251, and an embedding protrusion adapted to the fixing groove 252 is provided on the periphery of the fixing shaft 260 facing the fixing hole 251 (not shown in the figure). At the same time, a bolt structure is provided on the end of the fixing shaft 260 facing the fixing hole 251, and a through hole 253 is provided at the bottom of the fixing hole 251. During installation, the embedding protrusion is engaged into the fixing groove 252, and the fixing shaft 260 is further fixed in the fixing hole 251 by passing the bolt through the through hole 253, which greatly improves the stability of the caster.
[0040] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0041] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A dual precision bearing orthogonal cross-king silent caster comprising: The utility model provides a plastic coated bearing wheel, support, axle pin, axle clamp and flat pad, the bottom of support is provided with two support plates, two support plates are opposite, installation slot is formed between two support plates, plastic coated bearing wheel is fixed in installation slot through flat pad, axle pin and axle clamp, characterized by, one of support plates is provided with limit switch on the side away from plastic coated bearing wheel, limit switch is used for limiting the movement of plastic coated bearing wheel.
2. The dual precision bearing orthogonal cross card silent caster of claim 1, wherein, The limit switch comprises an elastic fixing piece and a limit pin, one end of the elastic fixing piece is fixed on the support plate, the other end of the elastic fixing piece is connected with the limit pin, a limit pin hole adapted to the limit pin is formed on the support plate, the limit pin can pass through the limit pin hole and contact the plastic coated bearing wheel to limit the plastic coated bearing wheel.
3. The dual precision bearing orthogonal cross card silent caster of claim 2, wherein, At least one positioning hole is arranged on the plastic coated bearing wheel, the positioning hole corresponds to the limit pin hole, and the limit pin can be inserted into the positioning hole when passing through the limit pin hole.
4. The dual precision bearing orthogonal cross card silent caster of claim 1, wherein, One side of the flat pad facing the plastic coated bearing wheel is provided with a nylon layer, an injection hole is formed on the support plate, and the injection hole corresponds to the flat pad.
5. The dual precision bearing orthogonal cross card silent caster of claim 1, wherein, The caster further comprises a precision bearing, the precision bearing is installed on the top of the support in the vertical direction, and a bearing group in orthogonal arrangement is formed, and the precision bearing is used for fixing the caster on the bucket disc.
6. The dual precision bearing orthogonal cross card silent caster of claim 1, wherein, The support comprises a fixed seat and a fixed shaft, the lower end of the fixed seat is provided with the support plate, the upper end of the fixed seat is provided with a fixed hole, the fixed shaft is fixed in the fixed hole through a detachable structure, and the fixed shaft is used for installing the precision bearing.
7. The dual precision bearing orthogonal cross-card silent caster of claim 6, wherein, A fixed groove is formed around the fixed hole, and an embedded protrusion matched with the fixed groove is arranged around the end of the fixed shaft facing the fixed hole.
8. The dual precision bearing orthogonal cross card silent caster of claim 6, wherein, A bolt structure is formed on the end of the fixed shaft facing the fixed hole, and a through hole is formed in the bottom of the fixed hole.