A caster with a double brake structure

Abstract

This utility model discloses a caster with a double-brake structure, comprising: a caster body including a roller, a bracket, and an upper sprocket; the roller is rotatably mounted on the bracket, and a bearing is provided between the bracket and the upper sprocket; and a brake module including a mounting bracket, a first pedal, a second pedal, and a limiting plate. The mounting bracket is fixedly mounted on the upper sprocket, the first pedal is rotatably mounted on the mounting bracket, and a limiting protrusion is provided at the end of the first pedal. The second pedal is rotatably mounted on the first pedal, and the limiting plate is rotatably mounted on the mounting bracket. The second pedal is connected to the limiting plate via a torsion spring, and a limiting element is provided on the lower surface of the limiting plate. The bracket has a locking hole corresponding to the limiting element. Compared with the prior art, this utility model solves the problems of inconvenient installation, disassembly, locking, and unlocking operations of existing brake structures for omnidirectional casters.

Description

Technical Field

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

[0002] Casters are a common type of mechanical hardware accessory, widely used on the bottom of load-bearing equipment (such as furniture, trolleys, machining equipment, and medical devices) to facilitate the movement of the load-bearing equipment. Swivel casters can not only move forward and backward, but also rotate freely in the horizontal direction.

[0003] After the load-bearing equipment is moved into position, the swivel casters need to be restricted from rotating horizontally by a braking structure to prevent changes in the position of the load-bearing equipment. The existing braking structure of swivel casters is complex, inconvenient to install and disassemble, and inconvenient to lock and unlock. Utility Model Content

[0004] The purpose of this utility model is to provide a caster with a double brake structure to solve the problems of inconvenient installation, disassembly, locking and unlocking of the existing brake structure of swivel casters.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a caster with a double-brake structure, comprising: The caster body includes a roller, a bracket, and an upper chuck. The roller is rotatably mounted on the bracket, and a bearing is provided between the bracket and the upper chuck. The brake module includes a mounting bracket, a first pedal pad, a second pedal pad, and a limiting plate. The mounting bracket is fixedly mounted on the upper gear plate. The first pedal pad is rotatably mounted on the mounting bracket and has a limiting protrusion at its end. The second pedal pad is rotatably mounted on the first pedal pad. The limiting plate is rotatably mounted on the mounting bracket. The second pedal pad is connected to the limiting plate via a torsion spring. A limiting element is provided on the lower surface of the limiting plate. The bracket has a locking hole corresponding to the position of the limiting element. When the brake module is unlocked, the limiting protrusion contacts the upper gear plate, the top of the second pedal contacts the lower surface of the first pedal, and the limiting component disengages from the lock hole.

[0006] As a further description of the above technical solution: The first pedal extends outward from the caster body to form a first pedal portion, and the second pedal extends outward from the caster body to form a second pedal portion. The first pedal portion and the second pedal portion are arranged symmetrically in opposite directions.

[0007] As a further description of the above technical solution: The limiting piece has symmetrically arranged upper folded edges on both sides.

[0008] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: 1. In this utility model, the first and second foot pads in the brake module constitute a caster with a double brake plate design. The caster is locked by stepping on the first foot pad and unlocked by stepping on the second foot pad, which improves the convenience of locking and unlocking operations and effectively avoids accidental operation.

[0009] 2. In this utility model, the brake module adopts a modular design, which can be connected to the upper gear plate by bolts through the mounting bracket, so as to realize the overall disassembly and installation, and make the brake module maintainable and replaceable. Attached Figure Description

[0010] 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.

[0011] Figure 1 This is a schematic diagram of a caster design with a double brake structure.

[0012] Figure 2 This is a structural breakdown diagram of a caster design with a double brake structure.

[0013] Figure 3 This is a schematic diagram of the brake module in a caster design with a dual-brake structure. Figure 1 .

[0014] Figure 4 This is a schematic diagram of the brake module in a caster design with a dual-brake structure. Figure 2 .

[0015] Figure 5 This is a schematic diagram of the unlocked state of a caster design with a double brake structure.

[0016] Figure 6 This is a schematic diagram of the locked state of a caster design with a double brake structure. Figure 1 .

[0017] Figure 7 This is a schematic diagram of the locked state of a caster design with a double brake structure. Figure 2 .

[0018] Figure 8 This is a schematic diagram of the brake module in a second design for a caster with a dual-brake structure. Figure 1 .

[0019] Figure 9 This is a schematic diagram of the brake module in a second design for a caster with a dual-brake structure. Figure 2 .

[0020] Legend: 1. Caster body; 11. Roller; 12. Bracket; 121. Locking hole; 13. Upper pulsator; 2. Brake module; 21. Mounting bracket; 22. First pedal; 29. ​​Second pedal; 23. Limiting plate; 231. Limiting component; 232. Upper folded edge; 24. Torsion spring. Detailed Implementation

[0021] 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 skilled in the art without creative effort are within the protection scope of the present utility model. Example

[0022] Please see Figure 1-7 This utility model provides a technical solution: a caster with a double brake structure, comprising: The caster body 1 includes a roller 11, a bracket 12 and an upper sprocket 13. The roller 11 is rotatably mounted on the bracket 12. A bearing is provided between the bracket 12 and the upper sprocket 13. The upper sprocket 13 is used to fix the load-bearing equipment. Brake module 2 includes mounting bracket 21, first pedal pad 22, second pedal pad 29, and limiting plate 23. Mounting bracket 21 is fixedly mounted on upper gear plate 13. First pedal pad 22 is rotatably mounted on mounting bracket 21. Limiting protrusion 221 is provided at the end of first pedal pad 22. Second pedal pad 29 is rotatably mounted on first pedal pad 22. Limiting plate 23 is rotatably mounted on mounting bracket 21. First pedal pad 22 and limiting plate 23 rotate coaxially. Second pedal pad 29 is connected to limiting plate 23 through torsion spring 24. Limiting element 231 is provided on the lower surface of limiting plate 23. Brake bracket 12 is provided with locking hole 121 corresponding to the position of limiting element 231. When the brake module 2 is unlocked, the limiting protrusion 221 contacts the upper gear plate 13, the top of the second pedal 29 contacts the lower surface of the first pedal 22, and the limiting member 231 disengages from the lock hole 121.

[0023] The brake module 2 adopts a modular design and can be connected to the upper gear plate 13 by bolts through the mounting bracket 21, so as to achieve overall disassembly and installation, making the brake module 2 easy to maintain and replace.

[0024] The first pedal piece 22 extends outward from the caster body 1 to form a first pedal portion, and the second pedal piece 29 extends outward from the caster body 1 to form a second pedal portion. The first pedal portion and the second pedal portion are arranged symmetrically back to back. This facilitates stepping on the first pedal piece 22 and the second pedal piece 29, thereby facilitating the unlocking and locking of the caster.

[0025] The limiting plate 23 has symmetrically arranged upper folded edges 232 on both sides. The upper folded edges 232 can effectively control the upward rotation angle of the limiting plate 23 when the brake module 2 is unlocked, thus protecting the limiting plate 23.

[0026] The limiting member 231 is a circular convex bulge. Correspondingly, the locking hole 121 is an oblong hole, which facilitates the locking member 231 to engage with the locking hole 121 on the bracket 12.

[0027] Working principle: The first footplate 22 and the second footplate 29 in brake module 2 constitute a caster with a double brake design. When the caster needs to be locked, after pressing down the first footplate 22, the first footplate 22 no longer presses against the top of the second footplate 29. The second footplate 29 rotates upward and drives the limiting plate 23 to rotate downward through the torsion spring 24. The limiting member 231 of the limiting plate 23 engages with the locking hole 121, restricting the horizontal rotation of the roller 11 and the bracket 12. Conversely, when unlocking the caster, pressing down on the second footplate 29 causes the first footplate 22 to rotate upward and reset. The first footplate 22 contacts the upper surface of the mounting bracket 21 through the limiting protrusion 221, thereby limiting the rotation angle. At the same time, the torsion spring 24 drives the limiting plate 23 to rotate upward, unlocking the bracket 12, which can then rotate horizontally through the bearing. The caster is locked by pressing down on the first footplate 22 and unlocked by pressing down on the second footplate 29, improving the convenience of locking and unlocking operations and effectively preventing accidental operation. Example

[0028] See appendix Figure 8-9 This embodiment further improves upon the above embodiment by making the following technical solution: the limiting member 231 has an arc-shaped bent edge. Correspondingly, the shape of the locking hole 121 on the bracket 12 is adjusted to accommodate the arc-shaped bent edge. (See attached image) Figure 8-9 The caster body 1 is omitted.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A caster with a double-brake structure, characterized in that, include: The caster body includes a roller, a bracket, and an upper sprocket. The roller is rotatably mounted on the bracket, and a bearing is provided between the bracket and the upper sprocket. A brake module includes a mounting bracket, a first pedal pad, a second pedal pad, and a limiting plate. The mounting bracket is fixedly mounted on the upper gear plate. The first pedal pad is rotatably mounted on the mounting bracket, and a limiting protrusion is provided at the end of the first pedal pad. The second pedal pad is rotatably mounted on the first pedal pad. The limiting plate is rotatably mounted on the mounting bracket. The second pedal pad is connected to the limiting plate via a torsion spring. A limiting element is provided on the lower surface of the limiting plate. The bracket is provided with a locking hole corresponding to the position of the limiting element. In the unlocked state of the brake module, the limiting protrusion contacts the upper caliper, the top of the second pedal contacts the lower surface of the first pedal, and the limiting member disengages from the locking hole.

2. A caster with a double brake structure according to claim 1, characterized in that, The first pedal end extends outward to the outside of the caster body to form a first pedal portion, and the second pedal end extends outward to the outside of the caster body to form a second pedal portion. The first pedal portion and the second pedal portion are arranged symmetrically in opposite directions.

3. A caster with a double-brake structure according to claim 1, characterized in that, The limiting piece has symmetrically arranged upper folded edges on both sides.

4. A caster with a double brake structure according to claim 1, characterized in that, The limiting component is a circular convex bulge.

5. A caster with a double-brake structure according to claim 4, characterized in that, The keyhole is a waist-shaped hole.

6. A caster with a double-brake structure according to claim 1, characterized in that, The limiting component is an arc-shaped bent edge.

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