Brake structure and caster

Abstract

The utility model provides a kind of brake structure and caster, including driving mechanism, brake mechanism and mainboard, the output end of driving mechanism is connected with brake mechanism, and brake mechanism is slidably connected with mainboard;Brake mechanism includes fixed shaft and two elastic brake parts, two elastic brake parts are rotatably connected on the both sides of fixed shaft respectively, and each elastic brake part is used to brake control on the one side rotating wheel of caster.The utility model can avoid the problems such as skidding and slipping on slope when brake is not in position, and excessive gear step brake, and improve the reliability of independent brake performance.

Description

Technical Field

[0001] This utility model relates to the field of mobile caster technology, and in particular to a brake structure and a caster. Background Technology

[0002] To achieve stable caster movement, existing casters utilize a central control structure and two rotating mechanisms on either side. During movement, a braking mechanism on the control structure can brake the casters on either side, enabling various movement modes. However, casters with this structure sometimes experience slippage and excessive braking force when shifting gears. Therefore, the market urgently needs an improved braking structure to address these issues. Utility Model Content

[0003] In order to solve the above-mentioned problems in the prior art, the present invention provides a brake structure and caster that can avoid slippage when the brake is not engaged and excessive pressure when pressing the brake pedal, thereby improving the reliability of braking performance.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] In a first aspect, the present invention provides a brake structure, including a drive mechanism, a braking mechanism and a main board, wherein the output end of the drive mechanism is connected to the braking mechanism, and the braking mechanism is slidably connected to the main board;

[0006] The braking mechanism includes a fixed shaft and an elastic braking element. The elastic braking element is rotatably connected to the fixed shaft and is used to brake the rotating wheel on the caster.

[0007] The beneficial effects of this utility model are as follows: the rotation of the elastic brake component is driven by the fixed shaft in the middle, so that when the brake is not engaged, the elastic brake component can smoothly transition into the mating part of the rotating wheel, thereby realizing the brake engagement. This can avoid problems such as slippage and excessive pressure on the brake pedal when the brake is not engaged, and improve the reliability of the braking performance.

[0008] Optionally, two elastic brakes are provided, each rotatably connected to both sides of the fixed shaft, and each elastic brake is used to brake one side of the rotating wheel on the caster.

[0009] As described above, the independent braking of the two elastic braking components is achieved through the fixed shaft in the middle, so that the two elastic braking components on the left and right sides and the two rotating wheels on the caster can be independently positioned without affecting each other, thereby improving the reliability of the independent braking performance.

[0010] Optionally, the elastic braking element is provided with arc-shaped distributed brake teeth.

[0011] Optionally, the elastic braking element includes a braking arm, an elastic element, and a limiting element;

[0012] The brake arm has a U-shaped structure, with its left and right sides rotatably connected to the fixed shaft. One side of its upper and lower sides is provided with brake teeth, and the other side is provided with the elastic element. The limiting element is fixed to the fixed shaft and abuts against the side of the elastic element away from the brake arm.

[0013] As described above, when the brake is not engaged, the elastic element allows the brake teeth to smoothly transition into the rotating teeth of the rotating wheel, thus enabling the brake to engage.

[0014] Optionally, the brake tooth is located at one end of the brake arm away from the fixed shaft.

[0015] Optionally, the elastic element is a spring.

[0016] Optionally, the braking mechanism further includes a brake bracket and a sliding pin. The brake bracket is provided with a sliding groove, the sliding pin is fixedly connected to the main board, and the sliding pin is slidably connected to the sliding groove.

[0017] Optionally, the brake bracket is clamped on both sides of the motherboard, and the sliding grooves are respectively provided on both sides of the motherboard, with a sliding pin slidably connected to each sliding groove.

[0018] As described above, the stable operation of the braking mechanism is achieved through the sliding cooperation of multiple sets of sliding pins and sliding grooves.

[0019] Secondly, this utility model provides a caster, including a swivel structure and a braking structure according to the first aspect. The swivel structure includes a rotating wheel, and the inner edge of the rotating wheel is surrounded by rotating teeth corresponding to the elastic braking member. The elastic braking member is movably connected to the rotating teeth during the up-and-down movement to brake the swivel structure.

[0020] The technical effect of the caster provided in the second aspect is described in the relevant description of the brake structure provided in the first aspect. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a brake structure according to an embodiment of the present utility model;

[0022] Figure 2 This is a cross-sectional schematic diagram of a brake structure after removing the mainboard according to an embodiment of the present utility model;

[0023] Figure 3This is a schematic diagram of the braking mechanism involved in an embodiment of the present utility model;

[0024] Figure 4 This is a partial schematic diagram of the braking mechanism involved in an embodiment of the present utility model;

[0025] Figure 5 This is a schematic diagram of the installation of the fixed shaft and the elastic braking component involved in the embodiment of this utility model;

[0026] Figure 6 This is a schematic diagram of the structure of a caster according to an embodiment of the present utility model;

[0027] Figure 7 This is a partial schematic diagram of a caster according to an embodiment of the present utility model.

[0028] Explanation of reference numerals in the attached figures:

[0029] 100. Casters;

[0030] 1. Drive mechanism; 11. Output end;

[0031] 2. Braking mechanism; 21. Fixed shaft; 22. Elastic brake element; 221. Brake arm; 222. Elastic element; 223. Limiting element; 224. Brake tooth; 23. Brake bracket; 231. Sliding groove; 24. Sliding pin;

[0032] 3. Motherboard;

[0033] 4. Rotating wheel structure; 41. Rotating wheel; 411. Rotating tooth; 42. Rotating rod. Detailed Implementation

[0034] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0035] Example 1

[0036] Please refer to Figures 1 to 4 This utility model provides a braking structure, including a drive mechanism 1, a braking mechanism 2 and a main board 3.

[0037] The output end 11 of the drive mechanism 1 is connected to the braking mechanism 2, and the braking mechanism 2 is slidably connected to the main board 3. (Refer to...) Figure 2As can be seen, the output end 11 of the drive mechanism 1 abuts against the braking mechanism 2. At this time, the up and down movement of the output end 11 in the drive mechanism 1 drives the up and down movement of the braking mechanism 2. That is, as long as the drive mechanism 1 can drive the braking mechanism 2 to move up and down, the specific implementation method is not the content of the utility model of this application, so it will not be described in detail.

[0038] Combination Figures 3 to 5 As can be seen, the braking mechanism 2 includes a fixed shaft 21, two elastic brake elements 22, a brake bracket 23, and a sliding pin 24. The two elastic brake elements 22 are rotatably connected to both sides of the fixed shaft 21, and each elastic brake element 22 is used to brake one side of the rotating wheel 41 on the caster 100. That is, the two elastic brake elements 22 rotate independently around the fixed shaft 21, and they do not affect each other. Therefore, when each elastic brake element 22 engages with its corresponding rotating wheel 41, they do not affect each other. That is, if one elastic brake element 22 is not in braking position, it does not affect the braking position of the other elastic brake element 22. Therefore, this embodiment achieves independent braking control by having the left and right elastic brake elements 22 independently engage with the two rotating wheels 41 on the caster 100. Figure 3 It can be seen that the elastic braking element 22 includes a braking arm 221, an elastic element 222, and a limiting element 223. (Refer to...) Figure 5 As can be seen, the brake arm 221 has a U-shaped structure, with its left and right sides rotatably connected to the fixed shaft 21. One side of its upper and lower sides is provided with brake teeth 224, and the other side has an elastic element 222. A limiting element 223 is fixed to the fixed shaft 21 and abuts against the side of the elastic element 222 away from the brake arm 221. In this embodiment, the lower side of the brake arm 221 is provided with arc-shaped brake teeth 224 to cooperate with the rotating teeth 411 of the rotating wheel 41. The upper side of the brake arm 221 has an elastic element 222 that abuts against the limiting element 223, which is also located on the upper side of the brake arm 221. This allows the brake teeth 224 to smoothly transition into the rotating teeth 411 of the rotating wheel 41 when the brake is not engaged, thus achieving brake engagement.

[0039] Combination Figure 5 It can be seen that the left and right sides of the brake arm 221 of one of the elastic brake components 22 are set at both ends of the fixed shaft 21, and the left and right sides of the brake arm 221 of the other elastic brake component 22 are located on the fixed shaft 21 near both ends. The limiting component 223 and the corresponding elastic component 222 of the two elastic brake components 22 are located on the center line of the fixed shaft 21, and also on the center line of the two elastic brake components 22. This makes the buffering of the brake arm 221 by the elastic component 222 more stable, and makes the braking control of the rotating wheel 41 by the elastic brake component 22 more stable.

[0040] In this embodiment, the brake tooth 224 is located on the brake arm 221 at the end away from the fixed shaft 21, so as to better cooperate with the rotating tooth 411 on the rotating wheel 41.

[0041] In this embodiment, the elastic element 222 is a spring. At this time, the limiting element 223 has a cylindrical protrusion on the side facing the spring to extend into the spring, and the upper side of the brake arm 221 has a groove to hold the spring, thereby ensuring that the spring will not deviate during the extension and contraction process.

[0042] Reference Figure 4 It is known that the brake bracket 23 is provided with a sliding groove 231, and the sliding pin 24 is fixedly connected to the main board 3, while the sliding pin 24 is slidably connected to the sliding groove 231. In this embodiment, the brake bracket 23 is clamped on both sides of the main board 3, and it is clamped by two symmetrically designed housings and fixed by screws. At this time, the brake bracket 23 is provided with two sliding grooves 231 on each side of the main board 3, and a sliding pin 24 is slidably connected to each sliding groove 231, so that the stable operation of the braking mechanism 2 is achieved by the sliding cooperation of four sliding pins 24 and four sliding grooves 231. In other embodiments, the sliding grooves 231 are completely symmetrical on the two housings, for example, one or three or more are provided on each of the two housings, and the number of sliding pins 24 corresponds to the number of sliding grooves 231.

[0043] In other embodiments, if there is only one rotating wheel 41, or if two rotating wheels 41 are braked by the same component, then the elastic brake 22 can be one. The elastic brake 22 is rotatably connected to the fixed shaft 21 to brake the rotating wheel 41 on the caster 100.

[0044] Example 2

[0045] Please refer to Figures 1 to 6 This utility model provides a caster 100, including a swivel structure 4 and a braking structure as described in Embodiment 1. The swivel structure 4 includes a rotating rod 42 and two rotating wheels 41, which are respectively fixed to both ends of the rotating rod 42. The center of the rotating rod 42 is mounted on a main plate 3. Each rotating wheel 41 has rotating teeth 411 corresponding to an elastic braking element 22 arranged around its inner edge. Each elastic braking element 22 is movably connected to its corresponding rotating teeth 411 during vertical movement to brake the swivel structure 4.

[0046] In this embodiment, the main board 3 is a metal component. Therefore, the rotating rod 42 and the metal component support the main frame bearing surface, ensuring that the entire caster 100 has higher load-bearing capacity.

[0047] In summary, the working process of this embodiment is as follows:

[0048] When the output end 11 of the drive mechanism 1 applies downward pressure to the braking mechanism 2, the elastic brake element 22 on the braking mechanism 2 moves downward as a whole so that the brake tooth 224 meshes with the rotating tooth 411 on the rotating wheel 41. At this time, if the brake tooth 224 does not mesh with the rotating tooth 411, but instead abuts against the surface of the rotating tooth 411, the brake arm 221 compresses the elastic element 222 upward to reduce the force between the brake tooth 224 and the rotating tooth 411, so that the brake tooth 224 can smoothly mesh with the rotating tooth 411 to achieve rotation control of the rotating wheel 41.

[0049] On the other hand, since the rotating wheels 41 on both sides are respectively engaged with the corresponding elastic brake members 22, when the brake tooth 224 on one side is not braked into position, it does not affect the brake tooth 224 on the other side to achieve brake control, thereby realizing independent braking.

[0050] Therefore, this invention can avoid problems such as slippage when the brake is not engaged and excessive braking force when in gear, thus improving the reliability of independent braking performance.

[0051] In the description of this utility model, it should be understood that 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 indicated technical features. Therefore, 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.

[0052] 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. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0053] 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 indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0054] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are 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.

[0055] 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 modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A braking structure, characterized in that, It includes a drive mechanism, a braking mechanism, and a main board. The output end of the drive mechanism is connected to the braking mechanism, and the braking mechanism is slidably connected to the main board. The braking mechanism includes a fixed shaft and an elastic braking element. The elastic braking element is rotatably connected to the fixed shaft and is used to brake the rotating wheel on the caster.

2. The brake structure according to claim 1, characterized in that, Two elastic brake components are provided, and the two elastic brake components are rotatably connected to both sides of the fixed shaft. Each elastic brake component is used to brake one side of the rotating wheel on the caster.

3. A braking structure according to claim 2, characterized in that, The elastic braking element is provided with arc-shaped distributed brake teeth.

4. A brake structure according to claim 3, characterized in that, The elastic braking component includes a braking arm, an elastic element, and a limiting element; The brake arm has a U-shaped structure, with its left and right sides rotatably connected to the fixed shaft. One side of its upper and lower sides is provided with brake teeth, and the other side is provided with the elastic element. The limiting element is fixed to the fixed shaft and abuts against the side of the elastic element away from the brake arm.

5. A braking structure according to claim 4, characterized in that, The brake tooth is located on the brake arm at one end away from the fixed shaft.

6. A braking structure according to claim 4, characterized in that, The elastic element is a spring.

7. A braking structure according to any one of claims 1 to 6, characterized in that, The braking mechanism further includes a brake bracket and a sliding pin. The brake bracket is provided with a sliding groove, the sliding pin is fixedly connected to the main board, and the sliding pin is slidably connected to the sliding groove.

8. A braking structure according to claim 7, characterized in that, The brake bracket is clamped on both sides of the motherboard, and the sliding grooves are respectively provided on both sides of the motherboard, with a sliding pin slidably connected to each sliding groove.

9. A caster, characterized in that, The invention includes a rotating wheel structure and a braking structure as described in any one of claims 1 to 8. The rotating wheel structure includes a rotating wheel, and the inner edge of the rotating wheel is surrounded by rotating teeth corresponding to the elastic braking member. The elastic braking member is movably connected to the rotating teeth during the up-and-down movement to brake the rotating wheel structure.

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