Anti-winding universal caster structure

Abstract

The utility model relates to the technical field of trundle, and disclose a kind of anti-winding universal trundle structure, and bearing frame is used as wheel body including integrally formed barrel cover and L-shaped cover;L-shaped cover inside channel is less than the inside channel of barrel cover;Trundle includes by PP plus PU material composite and through bearing A rotation sleeve in the outer wheel of middle pipe outer side and the two wheel edge covers of buckling in the outside of bearing A and covering in the both sides of outer wheel;Two wheel edge covers are boss shape structure;Upper mounting frame is installed on barrel cover and is rotated with barrel cover by bearing B. Through barrel cover and L-shaped cover and boss shape wheel edge cover multiple structure design effectively prevent winding, improve brake reliability, and overall structure is stable, assembly maintenance is convenient, and comprehensive performance is more optimal;Adopt composite material and reasonable bearing setting, enhance the wear resistance, cushioning and rotating flexibility of trundle.

Description

Technical Field

[0001] This utility model belongs to the field of caster technology, specifically relating to an anti-tangle universal caster structure. Background Technology

[0002] In numerous fields such as industrial production, home life, medical equipment, and logistics transportation, swivel casters are widely used as an important moving component on various equipment and appliances, providing convenience for flexible movement. Their performance directly affects the efficiency, safety, and lifespan of the equipment.

[0003] However, existing swivel casters commonly suffer from entanglement issues during use. When the caster rotates, debris such as ropes, hair, and fibers from the surrounding environment can easily get caught in the core rotating parts of the caster, such as bearings and axles. As the caster continues to rotate, these debris become increasingly entangled on the rotating components, increasing the resistance to rotation and making equipment movement difficult. Excessive entanglement can also cause wear and tear on the rotating components, shortening the caster's lifespan. In severe cases, it can even cause the caster to jam, affecting the normal use of the equipment and creating safety hazards.

[0004] In view of this, we propose an anti-tangle swivel caster structure to solve the above problems. Utility Model Content

[0005] The present invention aims to solve the technical problems of poor anti-winding effect or complex structure in the above-mentioned prior art, which are prone to malfunctions caused by the entanglement of debris.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An anti-tangle swivel caster structure includes:

[0008] The support frame, which is used as a wheel body, includes an integrally formed cylindrical cover and an L-shaped cover; the inner channel of the L-shaped cover is smaller than the inner channel of the cylindrical cover;

[0009] The caster includes an outer wheel made of PP and PU composite material and rotated on the outer side of the central tube via bearing A, and two wheel side covers fastened to the outside of bearing A and covering both sides of the outer wheel; the two wheel side covers have a boss-shaped structure.

[0010] The upper mounting bracket is mounted on the cylindrical cover and rotates with the cylindrical cover through bearing B.

[0011] Preferably, an externally threaded rod passes through the internal thread of the center tube. The externally threaded rod passes through the L-shaped cover, the center tube, and the two wheel rim covers. A nut sleeve, threaded to the externally threaded rod, then secures the center tube, the two wheel rim covers, and the L-shaped cover together. This ensures a firm connection of the components and guarantees the overall stability of the caster structure.

[0012] Preferably, there are two bearings A, each fixedly sleeved on the central tube, and the outer wheel rotates by fitting onto the outer surface of the two bearings A. This reduces friction when the outer wheel rotates, allowing the caster to rotate more smoothly and flexibly, thus improving ease of use.

[0013] Preferably, the outer sides of the two bearing A fixing parts are provided with ring-shaped, equally spaced locking positions, and the wheel rim cover is engaged with the locking positions by a locking member on its inner side. This enhances the stability of the connection between the wheel rim cover and the bearing A, while also facilitating the installation and removal of the wheel rim cover.

[0014] Preferably, the cylindrical cover has a beveled opening on the front side, and the L-shaped cover has a brake block on the rear side that engages with the brake spring on the outside of the caster to brake the caster. The brake spring is fixed to the support frame with screws, and the brake block is rotatably connected to the support frame via a shaft. The beveled opening reduces the entry of debris, and the braking structure allows for flexible caster braking, while also providing anti-entanglement and reliable braking functions.

[0015] Preferably, the upper mounting bracket includes a mounting plate and a mounting rod fixed to the top of the mounting plate. Bearing B is fixedly sleeved on the outer side of the mounting plate and is rotatably connected to the support frame. A positioning plate is provided at the bottom of the mounting plate and bearing B. The positioning plate, support frame, and mounting plate are fixed together by screws passing through them. This ensures the stability of the connection between the upper mounting bracket and the support frame, while also ensuring the upper mounting bracket rotates freely, achieving the omnidirectional function of the casters.

[0016] Preferably, the outer surface of the mounting rod is threaded, and a locking nut is provided on the outer side of the mounting rod to secure it to the mounting part. This ensures the casters are firmly fixed to the equipment, preventing loosening during use and improving the safety of equipment operation.

[0017] Compared with the prior art, the technical effects and advantages of this utility model are:

[0018] In terms of anti-winding performance, this invention features a stepped spatial transition formed by the integral molding of the cylindrical cover and L-shaped cover of the support frame. Combined with the oblique cut on the front side of the cylindrical cover and the boss-shaped wheel rim cover, a multi-layered blocking and guiding mechanism is constructed. Compared to the complex or ineffective anti-winding structures in existing technologies, this design more effectively prevents debris such as ropes and hair from approaching the core rotating part of the caster, significantly reducing the probability of entanglement, minimizing equipment failures caused by entanglement, and extending the service life of the caster.

[0019] The practicality and reliability of the braking function have been significantly improved. The brake block is rotatably connected to the support frame via a shaft, allowing for flexible operation that engages the brake spring against the outer side of the caster wheel, thus solving the problems of cumbersome operation, jamming, or unstable braking in existing technologies. Its simple structure and convenient operation enable quick caster braking, ensuring stable stopping of the equipment when needed, and significantly improving the safety and reliability of the equipment.

[0020] The overall structural stability and ease of assembly and maintenance are more competitive. The integrated molding of the cylindrical and L-shaped covers enhances the structural strength of the load-bearing frame. The wheel rim covers are secured to bearing A via clips, and the combination of the threaded rod and nut sleeve ensures a firm and stable connection between all components, avoiding the loosening defects of existing caster structures. Furthermore, this structural design simplifies the assembly process and makes disassembly and replacement of parts easier during later maintenance, reducing maintenance costs.

[0021] The outer wheels are made of a composite material of PP and PU, which combines good wear resistance and cushioning performance, adapting to different ground environments and reducing vibration during movement. The two bearings A reduce the rotational resistance of the outer wheels, making them rotate more flexibly and effortlessly. The upper mounting bracket, through the rotational engagement of bearing B with the cylindrical cover, ensures smooth omnidirectional rotation. Compared to the shortcomings of some existing casters in terms of material performance and rotational flexibility, the casters of this utility model have significantly improved in terms of user experience and durability. Attached Figure Description

[0022] Figure 1 This is a first-view diagram of the present invention;

[0023] Figure 2 This is a second-view diagram of the present invention;

[0024] Figure 3 This is the first exploded view of the present invention;

[0025] Figure 4 This is a second exploded view of the present invention;

[0026] Figure 5 This is an exploded view of the caster of this utility model;

[0027] Figure 6 This is a first-view view of the wheel rim cover of this utility model;

[0028] Figure 7 This is a second-view view of the wheel rim cover of this utility model;

[0029] Figure 8 This is a schematic diagram of the structure of bearing A of this utility model.

[0030] In the picture:

[0031] 1. Support frame; 101. Cylindrical cover; 102. L-shaped cover; 103. Beveled cut; 104. Brake spring; 105. Brake block; 106. Screw; 107. Shaft;

[0032] 2. Casters; 201. Bearing A; 202. Middle tube; 203. Outer wheel; 204. Wheel rim cover; 205. External threaded rod; 206. Nut sleeve; 207. Locking position; 208. Clamping device;

[0033] 3. Upper mounting bracket; 301. Bearing B; 302. Mounting rod; 303. Positioning plate; 304. Locking nut; 305. Mounting plate. Detailed Implementation

[0034] 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.

[0035] The following combination Figures 1 to 8 This application will be described in further detail.

[0036] This application discloses an anti-tangle universal caster structure, including a support frame 1, a caster 2, and an upper mounting frame 3;

[0037] The support frame 1, used as a wheel body, includes an integrally formed cylindrical cover 101 and an L-shaped cover 102; the inner hole of the L-shaped cover 102 is smaller than the inner hole of the cylindrical cover 101; the cylindrical cover 101 has a beveled cut 103 on the front side, and the L-shaped cover 102 has a brake block 105 on the rear side that cooperates with the brake spring 104 on the outside of the caster 2 to brake the caster 2. The brake spring 104 is fixed to the support frame 1 by screws 106, and the brake block 105 is rotatably connected to the support frame 1 through a shaft 107.

[0038] The cylindrical cover 101 and the L-shaped cover 102 are integrally formed. The inner channel of the L-shaped cover 102 is smaller than that of the cylindrical cover 101, creating a stepped spatial transition. When the caster 2 moves and nearby easily entangled objects such as ropes or hair approach, the larger space of the cylindrical cover 101 can initially block and guide these objects, while the smaller inner channel of the L-shaped cover 102 further reduces the passage for objects to enter the core rotating part of the caster 2. At the same time, the oblique cut 103 on the front of the cylindrical cover 101 makes it difficult for objects to enter the internal space formed by the two covers, thereby reducing the possibility of objects getting tangled on the rotating parts of the caster 2 and achieving an anti-tangling effect.

[0039] The brake spring 104 is fixed to the support frame 1 by screws 106. When braking is required, the brake block 105 is operated, causing it to actuate the brake spring 104. The brake block 105 is rotatably connected to the support frame 1 via a shaft 107. Under the action of the brake block 105, the brake spring 104 can contact the outer side of the caster 2, using friction to brake the caster 2 and prevent it from rotating. This braking structure is simple, practical, and easy to operate, enabling quick braking of the caster 2 and ensuring stable stopping of the equipment when needed, thus improving the safety and reliability of the equipment. Simultaneously, the rotatable connection of the brake block 105 to the support frame 1 via the shaft 107 makes the braking action more flexible and reduces jamming during braking.

[0040] Caster 2 includes an outer wheel 203 made of PP and PU composite material, which is rotatably sleeved on the outer side of the central tube 202 via bearing A201, and two wheel rim covers 204 fastened to the outside of bearing A201 and covering both sides of the outer wheel 203; the two wheel rim covers 204 have a boss-shaped structure; an external threaded rod 205 passes through the internal thread of the central tube 202, and the external threaded rod 205 passes through the L-shaped cover 102, the central tube 202, and the two wheel rim covers 204, and is fixed together by a nut sleeve 206 threaded to the external threaded rod 205. There are two bearings A201, which are fixedly sleeved on the central tube 202, and the outer wheel 203 is rotatably sleeved on the outer side of the two bearings A201. The outer side of the fixed part of the two bearings A201 is provided with a ring of equally spaced locking positions 207, and the wheel rim covers 204 are engaged with the locking positions 207 by locking parts 208 on their inner sides. The design of the slot 207 on bearing A201 does not affect the performance of bearing A201 itself, and the wheel cover 204 does not affect the normal rotation of outer wheel 203 after it is installed.

[0041] The two wheel rim covers 204 have a boss-shaped structure, which can change the movement trajectory of debris around the caster 2. When debris such as ropes or hair approaches the caster 2, the boss-shaped wheel rim covers 204 will block and guide the debris, making it difficult for the debris to enter the core rotating parts of the caster 2 (such as bearings, center tube 202, etc.). The sides of the boss-shaped structure are inclined surfaces. When debris comes into contact with the wheel rim covers 204, it will be guided along the inclined surfaces away from the rotation center of the caster 2, thereby reducing the possibility of debris getting tangled on the caster 2.

[0042] The outer wheel 203 of caster 2 is made of a composite material of PP and PU. It is rotatably mounted on the outer side of the central tube 202 via two bearings A201, allowing the outer wheel 203 to rotate freely around the central tube 202. The threaded rod 205 passes through the L-shaped cover 102, the central tube 202, and the two wheel rim covers 204, and is then fixed together by a nut sleeve 206, ensuring the overall stability of the caster 2 structure. The two bearings A201 reduce friction during the rotation of the outer wheel 203, making the caster 2 rotate more smoothly. The wheel rim cover 204 engages with the retaining part 207 on the outer side of the bearing A201 via a retaining piece 208 on its inner side, further enhancing the stability of the caster 2 structure.

[0043] The outer wheel 203, made of a PP and PU composite material, has good wear resistance and cushioning performance, adapting to different ground environments and reducing vibration during caster 2 movement. The use of two bearings A201 reduces the resistance when the outer wheel 203 rotates, making caster 2 rotate more flexibly and effortlessly, and extending its service life. The snap-fit ​​connection between the wheel cover 204 and bearing A201 is simple and reliable, facilitating the assembly and maintenance of caster 2.

[0044] The upper mounting bracket 3 is mounted on the cylindrical cover 101 and rotatably engages with the cylindrical cover 101 via bearing B301. The upper mounting bracket 3 includes a mounting plate 305 and a mounting rod 302 fixed to the top of the mounting plate 305. The bearing B301 is fixedly sleeved on the outer side of the mounting plate 305 and rotatably connected to the support frame 1. A positioning plate 303 is provided at the bottom of the mounting plate 305 and the bearing B301. The positioning plate 303, the support frame 1, and the mounting plate 305 are fixed together by screws that pass through the positioning plate 303, the support frame 1, and the mounting plate 305. The outer surface of the mounting rod 302 is an externally threaded part, and a locking nut 304 is provided on the outer side of the mounting rod 302 to lock it in place on the mounting part.

[0045] The upper mounting bracket 3 is rotatably engaged with the cylindrical cover 101 via bearing B301, allowing the upper mounting bracket 3 to rotate flexibly relative to the support frame 1, thus realizing the omnidirectional function of the caster 2. The mounting plate 305 of the upper mounting bracket 3 is connected to the cylindrical cover 101 via bearing B301. The positioning plate 303, the support frame 1, and the mounting plate 305 are fixed together by screws, ensuring the stability of the connection between the upper mounting bracket 3 and the support frame 1. The outer surface of the mounting rod 302 is externally threaded, and the mounting rod 302 can be locked and fixed to the mounting part by locking nut 304, ensuring a firm connection between the caster 2 and the equipment.

[0046] The use of bearing B301 reduces the rotational friction between the upper mounting bracket 3 and the cylindrical cover 101, making the omnidirectional rotation of caster 2 more flexible and smooth, facilitating the turning and movement of the equipment. The structural design of the upper mounting bracket 3 makes its installation and disassembly convenient and quick, which is beneficial for the replacement and maintenance of caster 2. The engagement of the external thread of the mounting rod 302 and the locking nut 304 can firmly fix caster 2 to the equipment, preventing the caster 2 from loosening during use and improving the safety and stability of the equipment operation.

[0047] This anti-tangling swivel caster structure achieves its anti-tangling function through a unique structural design. The cylindrical cover 101 and the L-shaped cover of the support frame 1 are integrally formed to create a stepped spatial transition. The cylindrical cover 101 initially blocks and guides debris, while the L-shaped cover narrows the passage. Combined with the oblique cut 103 on the front side of the cylindrical cover 101, it reduces the possibility of debris entering the core rotating part of the caster 2. The boss-shaped wheel side cover 204 changes the trajectory of debris, further blocking and guiding debris away from the core rotating part.

[0048] Its braking structure is flexible and practical. The brake block 105 is rotatably connected to the support frame 1 via the shaft 107. Operating the brake block 105 can drive the brake spring 104 to contact the outer side of the caster 2, using friction to brake. The flexible action reduces jamming and can quickly achieve braking, ensuring stable parking of the equipment. The anti-entanglement design effectively reduces debris entanglement through multiple structures, extending service life; the brake structure is simple and easy to operate, and the reliable braking improves safety; the components in the overall structure are firmly connected, making assembly and maintenance convenient, and the caster 2 rotates flexibly, adapting to different ground environments, resulting in superior overall performance.

[0049] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tangle-resistant universal caster structure, characterized in that, include: The support frame (1), which is used as a wheel body, includes an integrally formed cylindrical cover (101) and an L-shaped cover (102); the inner hole of the L-shaped cover (102) is smaller than the inner hole of the cylindrical cover (101); The caster (2) includes an outer wheel (203) made of PP and PU composite material and rotatably sleeved on the outer side of the middle tube (202) via bearing A (201), and two wheel cover (204) fastened to the outside of bearing A (201) and covering both sides of the outer wheel (203); the two wheel cover (204) are boss-shaped structures; The upper mounting bracket (3) is mounted on the cylindrical cover (101) and rotates with the cylindrical cover (101) through the bearing B (301).

2. The anti-tangle swivel caster structure according to claim 1, characterized in that: The inner thread of the middle tube (202) is through which the external thread rod (205) passes. After the external thread rod (205) passes through the L-shaped cover (102), the middle tube (202), and the two wheel rim covers (204), the middle tube (202), the two wheel rim covers (204) and the L-shaped cover (102) are fixed together by the nut sleeve (206) which is threaded to the external thread rod (205).

3. The anti-tangle swivel caster structure according to claim 2, characterized in that: There are two bearings A (201) and they are fixedly sleeved on the middle tube (202) respectively. The outer wheel (203) is rotatably sleeved on the outer side of the two bearings A (201).

4. The anti-tangle swivel caster structure according to claim 3, characterized in that: The outer sides of the fixing parts of the two bearings A (201) are respectively provided with ring-shaped and equally spaced locking positions (207), and the wheel cover (204) is engaged with the locking positions (207) through the locking piece (208) on its inner side.

5. The anti-tangle swivel caster structure according to claim 1, characterized in that: The cylindrical cover (101) has a slanted cut (103) on the front side, and the L-shaped cover (102) has a brake block (105) on the rear side that works with the brake spring (104) on the outside of the caster (2) to brake the caster (2). The brake spring (104) is fixed to the support frame (1) by screws (106), and the brake block (105) is rotatably connected to the support frame (1) by a shaft (107).

6. The anti-tangle swivel caster structure according to claim 1, characterized in that: The upper mounting bracket (3) includes a mounting plate (305) and a mounting rod (302) fixed on the top of the mounting plate (305). The bearing B (301) is fixedly sleeved on the outer side of the mounting plate (305) and the bearing B (301) is rotatably connected to the support frame (1). The bottom of the mounting plate (305) and the bearing B (301) is provided with a positioning plate (303). The positioning plate (303), the support frame (1) and the mounting plate (305) are fixed together by screws that pass through the positioning plate (303), the support frame (1) and the mounting plate (305).

7. The anti-tangle swivel caster structure according to claim 6, characterized in that: The outer surface of the mounting rod (302) is an external threaded part, and the outer side of the mounting rod (302) is provided with a locking nut (304) to lock and fix it on the mounting part.

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