Trundle convenient to unlock and brake

Abstract

The utility model relates to the technical field of trundles, and particularly discloses a trundle convenient to unlock and brake, which comprises a bracket, a trundle body rotationally connected with the bracket, a brake pedal, a brake release pedal and a brake assembly, the brake assembly comprises a middle plate, a brake plate and an elastic piece which are integrally formed, the middle plate is rotationally connected with the support, the brake plate is located at one end of the middle plate, and the elastic piece abuts against the support; the middle plate can rotate to a brake state that the brake plate abuts against the wheel body and a brake release state that the brake plate is separated from the wheel body; the brake release pedal is rotationally connected with the support and the brake pedal, and a locking structure is arranged on the brake release pedal. The brake pedal is rotationally connected with the end, provided with the brake plate, of the middle plate, and the brake pedal comprises an adapter matched with the locking structure. The structure can be simplified, and assembling is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to a trundle technical field, especially a trundle of brake convenient to unlock. BACKGROUND

[0002] Trundle is one of the core components of mobile carrier, and is widely used in industry. In order to prevent the carrier from moving by mistake, part of the trundle is provided with a brake assembly, which can limit the rotation of the wheel body of the trundle and play the role of brake.

[0003] For example, the Chinese invention patent with the publication number CN117644743A discloses a trundle with brake function, which can brake by stepping on the brake pedal and can also release the brake state by stepping on the brake release pedal. However, the components required to achieve the above functions are too many, the structure is complex, and the assembly is very cumbersome. UTILITY MODEL CONTENT

[0004] The utility model provides a trundle of brake convenient to unlock can simplify the structure, make things convenient for assembly.

[0005] To solve the above problems, the utility model adopts the following technical scheme:

[0006] The embodiment of the utility model provides a trundle of brake convenient to unlock, which comprises a support, a wheel body rotatably connected with the support, a brake pedal, a brake release pedal and a brake assembly. The brake assembly comprises an integrally formed intermediate plate, a brake plate and an elastic member. The intermediate plate is rotatably connected with the support. The brake plate is located at one end of the intermediate plate. The elastic member abuts against the support. The intermediate plate can be rotated to a brake state in which the brake plate abuts against the wheel body and a brake release state in which the brake plate is separated from the wheel body. The brake release pedal is rotatably connected with the support and the brake pedal. A locking structure is arranged on the brake release pedal. The brake pedal is rotatably connected with one end of the intermediate plate provided with the brake plate. The brake pedal comprises an adapter matched with the locking structure. When the brake pedal is stepped on, the brake pedal can drive the intermediate plate to rotate from the brake release state to the brake state. When the intermediate plate is in the brake state, the adapter and the locking structure are locked and matched to keep the intermediate plate in the brake state. When the adapter is separated from the locking structure, the elastic member applies a restoring force to the intermediate plate to push the intermediate plate and the brake pedal to reset.

[0007] In some embodiments, the locking structure is a locking groove. When the adapter is inserted into the locking groove, the adapter and the locking structure are locked and matched. When the adapter is separated from the locking groove, the adapter and the locking structure are separated.

[0008] In some embodiments, the adapter is provided with a first plane, the release brake pedal is provided with a second plane and an arc-shaped guide surface, the rotation axis of the release brake pedal and the brake pedal is coaxial with the center of the arc-shaped guide surface, one side of the arc-shaped guide surface is connected to the second plane, and the other side is connected to the locking groove; when the intermediate plate is in the release brake state, the first plane is in close contact with the second plane, and during the process of the intermediate plate switching from the release brake state to the brake state, the first plane slides along the arc-shaped guide surface.

[0009] In some embodiments, the release brake pedal includes a locking baffle, and a third plane is also provided on the release brake pedal. The side of the arc-shaped guide surface away from the second plane is connected to the third plane, and the locking groove is formed between the locking baffle and the third plane.

[0010] In some embodiments, the release pedal further includes a connecting block located on one side of the locking baffle, wherein the second plane, the third plane, and the arc-shaped guide surface are all disposed on the connecting block; the connecting block is rotatably connected to the brake pedal.

[0011] In some embodiments, the release pedal further includes a release seat, which is rotatably connected to the bracket, and the connecting block and the locking baffle are both connected to the bottom of the release seat.

[0012] In some embodiments, when the intermediate plate is in a braking state, the release pedal is located above the brake pedal, and the brake pedal is provided with a clearance groove through which the release pedal can pass.

[0013] In some embodiments, the brake pedal further includes two connecting arms, the upper ends of which are rotatably connected to the release brake pedal and the lower ends of which are rotatably connected to the intermediate plate, and the adapter is located between the two connecting arms.

[0014] In some embodiments, the elastic element is an elastically deformable plate, one end of which is connected to the intermediate plate and the other end abuts against the bracket.

[0015] In some embodiments, the brake pedal is located above the intermediate plate, and the intermediate plate has an upwardly extending lug at one end where the brake plate is provided, the lug being rotatably connected to the brake pedal.

[0016] This utility model has at least the following beneficial effects: This utility model mainly relies on a brake pedal, a release pedal and a braking assembly to realize the braking and release functions. The braking assembly includes an integrally formed intermediate plate, a brake plate and an elastic element. As a result, the number of components of the entire caster is greatly reduced, which can simplify the structure and facilitate assembly. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the caster wheel without brakes according to one embodiment of the present invention;

[0018] Figure 2 for Figure 1 A cross-sectional view of the caster shown;

[0019] Figure 3 This is a schematic diagram of the caster brake in one embodiment of the present invention;

[0020] Figure 4 for Figure 3 A cross-sectional view of the caster shown;

[0021] Figure 5 This is a schematic diagram of the brake pedal, release pedal, and braking assembly according to an embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of the structure of the brake release pedal according to an embodiment of the present invention;

[0023] Figure 7 This is a schematic diagram of the structure of a brake pedal according to an embodiment of the present invention;

[0024] Figure 8 This is a schematic diagram of the structure of a braking assembly according to an embodiment of the present invention.

[0025] The attached figures are labeled as follows:

[0026] Wheel body 100, bracket 200;

[0027] Brake pedal 310, adapter 311, first plane 312, connecting arm 313, clearance groove 314;

[0028] Release brake pedal 320, locking structure 321, second plane 322, arc-shaped guide surface 323, locking baffle 324, connecting block 325, release brake seat 326, third plane 327;

[0029] Braking assembly 330, intermediate plate 331, brake plate 332, elastic element 333, lug 334. Detailed Implementation

[0030] This invention provides the following description with reference to the accompanying drawings to aid in a comprehensive understanding of the various embodiments of the invention as defined by the claims and their equivalents. The description includes various specific details to aid understanding, but these details should be considered exemplary only. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of the invention.

[0031] In the description of this utility model, the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] It should be understood that when one element (e.g., the first element) is “connected” to another element (e.g., the second element), the element may be directly connected to the other element, or there may be an intervening element (e.g., the third element) between the element and the other element.

[0033] An embodiment of this utility model provides a caster with a convenient brake unlocking mechanism, such as... Figures 1-7 As shown, the system includes a bracket 200, a wheel 100 rotatably connected to the bracket 200, a brake pedal 310, a release pedal 320, and a braking assembly 330. The brake pedal 310, release pedal 320, and braking assembly 330 are all mounted on the bracket 200, and both the brake pedal 310 and release pedal 320 can be pressed by the user. The braking assembly 330 includes an integrally formed intermediate plate 331, a brake plate 332, and an elastic element 333. By making the intermediate plate 331, brake plate 332, and elastic element 333 into a single component, the number of components is reduced. The intermediate plate 331 is rotatably connected to the bracket 200, the brake plate 332 is located at one end of the intermediate plate 331, and the elastic element 333 abuts against the bracket 200, providing an elastic restoring force to the intermediate plate 331.

[0034] The intermediate plate 331 can be rotated to a braking state and a de-braking state; when the intermediate plate 331 is in the braking state, such as Figure 3 and Figure 4 As shown, the brake plate 332 abuts against the wheel 100 to increase the resistance to the rotation of the wheel 100, thereby limiting the rotation of the wheel 100 and acting as a brake; when the intermediate plate 331 is in the released state, as... Figure 1 and Figure 2 As shown, the brake plate 332 is separated from the wheel body 100, and it no longer restricts the rotation of the wheel body 100, thereby releasing the brake and allowing the caster to move normally.

[0035] The release brake pedal 320 is rotatably connected to the bracket 200 and the brake pedal 310. When the brake pedal 310 rotates, it can drive the release brake pedal 320 to rotate. The release brake pedal 320 is provided with a locking structure 321. The brake pedal 310 is rotatably connected to one end of the intermediate plate 331 where the brake plate 332 is provided. When the brake pedal 310 rotates, it can drive the intermediate plate 331 to rotate. The brake pedal 310 includes an adapter 311 that is compatible with the locking structure 321.

[0036] When the brake pedal 310 is pressed by the user, it forms a shape like Figure 3 and Figure 4 As shown, the brake pedal 310 can drive the intermediate plate 331 from the released state to the brake state to brake, thereby braking the wheel 100. When the intermediate plate 331 is in the brake state, the adapter 311 and the locking structure 321 lock together to restrict the rotation of the intermediate plate 331, so that the intermediate plate 331 remains in the brake state, and the entire caster is in the brake state and will not be released arbitrarily.

[0037] When the release pedal 320 is stepped on by the user, the adapter 311 is forcibly separated from the locking structure 321 under the action of external force. The adapter 311 and the locking structure 321 are no longer locked together, and the rotation of the intermediate plate 331 is no longer restricted. The restoring force applied by the elastic element 333 to the intermediate plate 331 pushes the intermediate plate 331 back to the release state, and correspondingly also drives the brake pedal 310 back to the initial state that can be stepped on by the user.

[0038] Therefore, this embodiment can achieve braking by stepping on the brake pedal 310 and release the braking state by stepping on the release pedal 320. This embodiment mainly relies on the brake pedal 310, the release pedal 320 and the braking assembly 330 to achieve the braking and releasing functions. The braking assembly 330 includes an integrally formed intermediate plate 331, a brake plate 332 and an elastic element 333. As a result, the number of components of the entire caster is greatly reduced, which simplifies the structure and facilitates assembly.

[0039] In some embodiments, such as Figures 3-7 As shown, the locking structure 321 is a locking groove. When the adapter 311 is inserted into the locking groove, the adapter 311 and the locking structure 321 lock together. When the adapter 311 is disengaged from the locking groove, the adapter 311 and the locking structure 321 separate.

[0040] The locking groove has the advantage of being easy to process and manufacture, and the adapter 311 can be easily inserted into or removed from the locking groove, ensuring that the adapter 311 and the locking structure 321 can be smoothly locked together.

[0041] Furthermore, the adapter 311 is provided with a first plane 312, and the release brake pedal 320 is provided with a second plane 322 and an arc-shaped guide surface 323. The rotation axis of the release brake pedal 320 and the brake pedal 310 is coaxially arranged with the center of the arc-shaped guide surface 323. One side of the arc-shaped guide surface 323 is connected to the second plane 322, and the other side of the arc-shaped guide surface 323 is connected to the locking groove.

[0042] When the intermediate plate 331 is in the released state, the first plane 312 is in close contact with the second plane 322. This state allows the first plane 312 and the second plane 322 to remain in close contact. Without the action of external force, the brake pedal 310 is difficult to rotate relative to the release pedal 320 on its own, so the intermediate plate 331 will not switch to the brake state at will, ensuring the normal operation of the caster.

[0043] During the process of the intermediate plate 331 switching from the de-brake state to the brake state, the first plane 312 slides along the arc-shaped guide surface 323. Guided by the arc-shaped guide surface 323, the adapter 311 can move more easily into the locking groove, thus being able to be inserted into the locking groove more smoothly.

[0044] Furthermore, the release brake pedal 320 includes a locking baffle 324, and a third plane 327 is also provided on the release brake pedal 320. The side of the arc-shaped guide surface 323 away from the second plane 322 is connected to the third plane 327, and a locking groove is formed between the locking baffle 324 and the third plane 327.

[0045] During the transition from the de-brake state to the brake state of the intermediate plate 331, the first plane 312 slides along the arc-shaped guide surface 323 first, and then along the third plane 327. The adapter 311 is then smoothly inserted into the locking groove, resulting in better guidance. Simultaneously, since the third plane 327 is flat, the first plane 312 can be in close contact with it. Without external force, the adapter 311 is unlikely to detach from the locking groove on its own, and the intermediate plate 331 will not arbitrarily switch to the de-brake state, but will remain in the brake state.

[0046] In this embodiment, both the second plane 322 and the third plane 327 can be tangent to the arc-shaped guide surface 323, making the sliding of the adapter 311 smoother.

[0047] In some embodiments, the release pedal 320 further includes a connecting block 325, which is located on one side of the locking baffle 324. The second plane 322, the third plane 327, and the arc-shaped guide surface 323 are all disposed on the connecting block 325. The connecting block 325 is rotatably connected to the brake pedal 310.

[0048] The second plane 322, the third plane 327 and the arc-shaped guide surface 323 are formed by the connecting block 325. The brake pedal 310 can be rotatably connected to both sides of the connecting block 325 to prevent the connecting block 325 from moving along the rotation axis, and the overall structure is more compact.

[0049] In some embodiments, the release pedal 320 further includes a release seat 326, which is rotatably connected to the bracket 200. The connecting block 325 and the locking baffle 324 are both connected to the bottom of the release seat 326. Thus, when the user presses the brake pedal 310, the release pedal 320 can be rotated.

[0050] In some embodiments, the locking groove may be an arc-shaped groove, the adapter 311 may be wedge-shaped, and the head of the adapter 311 may be arc-shaped to fit the locking groove so that the head of the adapter 311 can be inserted into the locking groove.

[0051] In some embodiments, such as Figure 3 , Figure 4 and Figure 7 As shown, when the intermediate plate 331 is in the braking state, the release pedal 320 is located above the brake pedal 310. In this state, it is easier for the user to step on the release pedal 320, making it more convenient to use. At the same time, the brake pedal 310 is provided with a clearance groove 314 through which the release pedal 320 can pass, so as to avoid interference during the relative rotation of the two.

[0052] like Figure 1 and Figure 2 As shown, when the intermediate plate 331 is in the released state, the brake pedal 310 is located above the release pedal 320. In this state, it is easier for the user to step on the brake pedal 310, making it more convenient to use.

[0053] In some embodiments, such as Figure 3 , Figure 4 and Figure 7 As shown, the brake pedal 310 also includes two connecting arms 313. The upper ends of the two connecting arms 313 are rotatably connected to the release brake pedal 320, and the lower ends are rotatably connected to the intermediate plate 331. The adapter 311 is located between the two connecting arms 313 to protect the adapter 311.

[0054] Specifically, the upper ends of the two connecting arms 313 can be rotatably connected to the two sides of the connecting block 325 respectively.

[0055] In some embodiments, such as Figure 3 , Figure 4 and Figure 8 As shown, the elastic element 333 is an elastic plate that can be elastically deformed. One end of the elastic plate is connected to the intermediate plate 331, and the other end abuts against the bracket 200. The elastic restoring force is generated by the deformation of the elastic plate.

[0056] In some embodiments, such as Figure 3 , Figure 4 and Figure 8 As shown, the brake pedal 310 is located above the intermediate plate 331. The intermediate plate 331 has an upwardly extending lug 334 at one end where the brake plate 332 is provided. The lug 334 is rotatably connected to the brake pedal 310, specifically to the connecting arm 313 in the above embodiment. Thus, when the brake pedal 310 is stepped on by the user, the brake pedal 310 can drive the intermediate plate 331 to rotate.

[0057] The terms and words used in the foregoing description and claims are not limited to their literal meaning, but are merely used by the applicant to enable a clear and consistent understanding of the present invention. Therefore, those skilled in the art should understand that the foregoing description of various embodiments of the present invention is for illustrative purposes only, and not intended to limit the present invention as defined by the appended claims and their equivalents.

Claims

1. A caster with a convenient brake release mechanism, characterized in that: The system includes a bracket, a wheel rotatably connected to the bracket, a brake pedal, a release pedal, and a braking assembly. The braking assembly includes an integrally formed intermediate plate, a brake plate, and an elastic element. The intermediate plate is rotatably connected to the bracket, the brake plate is located at one end of the intermediate plate, and the elastic element abuts against the bracket. The intermediate plate can rotate to a braking state where the brake plate abuts against the wheel and to a release state where the brake plate is separated from the wheel. The release pedal is rotatably connected to both the bracket and the brake pedal, and a locking structure is provided on the release pedal. The brake pedal is rotatably connected to the end of the intermediate plate where the brake plate is located, and the brake pedal includes an adapter that matches the locking structure. When the brake pedal is pressed, the brake pedal can drive the intermediate plate to rotate from the release state to the braking state. When the intermediate plate is in the braking state, the adapter locks with the locking structure to keep the intermediate plate in the braking state. When the adapter separates from the locking structure, the restoring force applied by the elastic element to the intermediate plate pushes both the intermediate plate and the brake pedal back to their original positions.

2. The caster wheel with convenient brake unlocking according to claim 1, characterized in that: The locking structure is a locking groove. When the adapter is inserted into the locking groove, the adapter and the locking structure lock together. When the adapter is disengaged from the locking groove, the adapter and the locking structure separate.

3. The caster wheel with convenient brake unlocking according to claim 2, characterized in that: The adapter is provided with a first plane, and the release brake pedal is provided with a second plane and an arc-shaped guide surface. The rotation axis of the release brake pedal and the brake pedal is coaxial with the center of the arc-shaped guide surface. One side of the arc-shaped guide surface is connected to the second plane, and the other side is connected to the locking groove. When the intermediate plate is in the release brake state, the first plane is in close contact with the second plane. During the process of the intermediate plate switching from the release brake state to the brake state, the first plane slides along the arc-shaped guide surface.

4. The caster with convenient brake unlocking according to claim 3, characterized in that: The release brake pedal includes a locking baffle, and a third plane is also provided on the release brake pedal. The side of the arc-shaped guide surface away from the second plane is connected to the third plane, and the locking groove is formed between the locking baffle and the third plane.

5. The caster wheel with convenient brake unlocking according to claim 4, characterized in that: The release pedal also includes a connecting block, which is located on one side of the locking baffle. The second plane, the third plane, and the arc-shaped guide surface are all disposed on the connecting block. The connecting block is rotatably connected to the brake pedal.

6. The caster wheel with convenient brake unlocking according to claim 5, characterized in that: The brake release pedal also includes a brake release seat, which is rotatably connected to the bracket. The connecting block and the locking baffle are both connected to the bottom of the brake release seat.

7. The caster with convenient unlocking brake according to any one of claims 1-6, characterized in that: When the intermediate plate is in the braking state, the release pedal is located above the brake pedal, and the brake pedal is provided with a clearance groove through which the release pedal can pass.

8. The caster with convenient unlocking brake according to any one of claims 1-6, characterized in that: The brake pedal also includes two connecting arms. The upper ends of the two connecting arms are rotatably connected to the release brake pedal, and the lower ends are rotatably connected to the intermediate plate. The adapter is located between the two connecting arms.

9. The caster with convenient unlocking brake according to any one of claims 1-6, characterized in that: The elastic element is an elastic plate that can deform elastically. One end of the elastic plate is connected to the intermediate plate, and the other end abuts against the bracket.

10. The caster with convenient unlocking brake according to any one of claims 1-6, characterized in that: The brake pedal is located above the middle plate, and the middle plate has an upwardly extending lug at one end where the brake plate is located. The lug is rotatably connected to the brake pedal.

Images