Quickly detachable trundle

Abstract

The utility model relates to the technical field of casters, and discloses a quickly detachable caster which comprises a caster frame, a sliding mechanism is arranged in the caster frame, a movable mechanism is arranged in the caster frame, the sliding mechanism comprises a pulley assembly and a brake assembly, the pulley assembly is arranged in the caster frame, and the brake assembly is arranged in the movable mechanism. The brake assembly is arranged in the wheel carrier, the pulley assembly comprises a threaded fixing shaft, and the threaded fixing shaft is movably connected into the wheel carrier. According to the trundle capable of being rapidly detached, in the using process, the arranged threaded fixing shafts are matched with the threaded fixing shafts, so that the idler wheels rotate on the threaded fixing shafts, then the idler wheels are limited through the threaded fixing shafts, and when the idler wheels are damaged after long-term use in daily life, the idler wheels can be conveniently detached. And during disassembly, the threaded fixed shafts can be separated by twisting the threaded fixed shafts, and the rollers can be separated and then replaced with new rollers for use, so that convenience is provided for transportation of people, and articles are protected from being damaged in the transportation process.

Description

Technical Field

[0001] The utility model relates to the technical field of casters, in particular to a caster which can be quickly disassembled. Background Art

[0002] Casters include movable casters and fixed casters. Movable casters are also called universal wheels, and their structure allows 360-degree rotation; fixed casters are also called fixed casters, which have no rotating structure and cannot rotate. Usually, the two types of casters are used in combination. For example, the structure of a trolley is two fixed wheels in the front and two universal wheels in the back near the push handle. In order to facilitate the use of casters in real life, we began to use the disassembly of casters.

[0003] According to the description of a detachable universal caster disclosed on the patent website (authorization announcement number: CN 209920943U), "The utility model discloses a detachable universal caster, including a wheel seat, a wheel frame and a roller arranged on the wheel frame, the wheel seat is provided with a vertical shaft, the wheel frame is rotatably sleeved on the vertical shaft, and the lower part of the vertical shaft is provided with a limiting component for axially limiting the wheel frame. The detachable universal caster of the utility model belongs to the technical field of rollers, and the roller is easy to replace. The wheel frame is axially limited by arranging a limiting component at the lower part of the vertical shaft, which is convenient for disassembly and assembly; the wheel frame is connected to the vertical shaft by a limiting gasket and a bayonet, which is convenient for disassembly and assembly, saving time and effort; the wheel frame and the wheel seat are accurately positioned, and the center lines are kept coincident, so that the wheel frame rotates smoothly."

[0004] In view of the above description, the applicant believes that there are the following problems:

[0005] During the use of the utility model, since the device operates the caster through the cooperation of the roller and the wheel frame, when we transport items in our daily life, we will use the caster to transport the items for convenience. The device may cause the friction of the caster to increase when used for a long time, or the caster may be damaged due to bumps, resulting in inconvenience in transportation and damage to the transported items during transportation. Therefore, it is necessary to improve a caster that can be quickly disassembled to solve the above problems. Utility Model Content

[0006] The utility model aims to provide a caster that can be quickly disassembled to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a quickly detachable caster, comprising a wheel frame, a sliding mechanism is arranged inside the wheel frame, and a movable mechanism is arranged inside the wheel frame.

[0008] The sliding mechanism comprises a pulley assembly and a brake assembly. The pulley assembly is arranged inside the wheel frame, and the brake assembly is arranged inside the wheel frame.

[0009] Preferably, the pulley assembly includes a threaded fixed shaft, the threaded fixed shaft is movably connected to the inside of the wheel frame, the external thread of the threaded fixed shaft is connected to a threaded cap, the external movability of the threaded fixed shaft is connected to a limiting ring, the external movability of the threaded fixed shaft is connected to a roller, and the roller can rotate on the outside of the threaded fixed shaft through the cooperation between the threaded fixed shaft and the threaded cap, which has linkage.

[0010] Preferably, two limiting rings are provided, and the two limiting rings are symmetrically and movably connected to the outside of the threaded fixed shaft. The limiting rings are in contact with the roller. The roller is limited by the provided limiting rings so that the roller will not slip when rotating, thereby ensuring stability.

[0011] Preferably, the brake assembly includes a fixed shaft, the fixed shaft is fixedly connected to the inside of the wheel frame, the outside of the fixed shaft is rotatably connected to a brake housing, the outside of the fixed shaft is fixedly connected to a return spring, the return spring is fixedly connected to the inside of the brake housing, the inside of the wheel frame is fixedly connected to a fixed baffle, the bottom of the fixed baffle is fixedly connected to a brake pad, and the brake housing can be rotated through the cooperation of the brake housing, the return spring and the fixed shaft, and is adjustable.

[0012] Preferably, the brake housing is in contact with the brake pad, and the brake pad is in contact with the brake housing, and the action of the brake housing on the brake pad causes the fixed shaft to contact the roller, thereby restricting the roller, which has a restrictive and controllable effect.

[0013] Preferably, the movable mechanism includes a vertical shaft, the vertical shaft is movably connected to the inside of the wheel frame, the vertical shaft is movably connected to the wheel seat outside, the top of the vertical shaft is fixedly connected to a retaining ring, the internal rotation of the retaining ring is connected to a spring damper, the spring damper is fixedly connected to the inside of the wheel seat, the external sliding connection of the vertical shaft is connected to a sliding plate, a shock-absorbing spring is fixedly connected between the sliding plate and the wheel seat, the external movably connected to a rubber ring of the vertical shaft, the internal thread of the wheel frame is connected to a bayonet pin, the wheel seat can be rotated by cooperating with the vertical shaft inside the wheel seat, and the wheel seat has variability and adjustability.

[0014] Preferably, the wheel seat is provided with a sliding groove on the outside corresponding to the retaining ring, the retaining ring moves inside the sliding groove, the sliding sheet is in contact with the rubber ring, and the vertical shaft is provided with a through hole at the corresponding position of the retaining pin, the retaining pin moves inside the through hole, and the retaining pin fixes the wheel frame and the spring damping through the opened through hole to limit it, which has limitation.

[0015] Compared with the prior art, the utility model provides a caster that can be quickly disassembled, which has the following features:

[0016] Beneficial effects:

[0017] 1. During use, the quickly detachable caster is equipped with a threaded fixed shaft to cooperate with the threaded fixed shaft, so that the roller rotates on the threaded fixed shaft, and then the threaded fixed shaft is used to limit the roller. When the roller is damaged after long-term daily use, when disassembling, we only need to twist the threaded fixed shaft to disengage the threaded fixed shaft, and the roller will be disengaged and then replaced with a new roller, which provides convenience for our transportation and protects the items from damage during transportation.

[0018] 2. During use, the quickly detachable caster can rotate the clamping ring and the vertical shaft, so that the clamping pin can rotate in cooperation with the wheel frame and the vertical shaft, so that the caster can turn flexibly with the rotation when transporting objects, and the shock-absorbing spring and the sliding plate can play a shock-absorbing role when transporting heavy objects and steep slopes. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative labor:

[0020] Figure 1 This is a schematic diagram of the appearance structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the hierarchical structure of the pulley assembly of the utility model;

[0022] Figure 3 This is a schematic diagram of the brake assembly structure of the utility model;

[0023] Figure 4 It is a schematic diagram of the decomposition structure of the activity mechanism of the utility model;

[0024] Figure 5 It is a schematic diagram of the structure of the activity mechanism of the utility model.

[0025] In the figure: 1. wheel frame; 2. sliding mechanism; 21. pulley assembly; 211. threaded fixed shaft; 212. threaded cap; 213. limiting ring; 214. roller; 22. brake assembly; 221. fixed shaft; 222. return spring; 223. brake card shell; 224. fixed baffle; 225. brake pad; 3. movable mechanism; 31. wheel seat; 32. vertical shaft; 33. sliding plate; 34. shock-absorbing spring; 35. rubber ring; 36. bayonet pin; 37. retaining ring; 38. spring damping. DETAILED DESCRIPTION

[0026] See also Figure 1-5 The utility model provides a technical solution: a quickly detachable caster, comprising a wheel frame 1, a sliding mechanism 2 is arranged inside the wheel frame 1, and a movable mechanism 3 is arranged inside the wheel frame 1.

[0027] In this embodiment, the sliding mechanism 2 includes a pulley assembly 21 and a brake assembly 22. The pulley assembly 21 is arranged inside the wheel frame 1, and the brake assembly 22 is arranged inside the wheel frame 1. The pulley assembly 21 includes a threaded fixed shaft 211, and the threaded fixed shaft 211 is movably connected to the inside of the wheel frame 1. The external thread of the threaded fixed shaft 211 is connected with a threaded cap 212, and the external movably connected with a limiting ring 213, the threaded fixed shaft 211 is externally movably connected with a roller 214, and the threaded fixed shaft 211 cooperates with the threaded fixed shaft 211 and the threaded cap 212 so that the roller 214 can rotate outside the threaded fixed shaft 211, and has linkage. Two limiting rings 213 are provided, and the two limiting rings 213 are symmetrically and movably connected to the outside of the threaded fixed shaft 211, and the limiting ring 213 contacts the roller 214, and the roller 214 is limited by the limiting ring 213 so that the roller 214 rotates The wheel frame 1 will not slip and has stability. The brake assembly 22 includes a fixed shaft 221, which is fixedly connected to the inside of the wheel frame 1. The outside of the fixed shaft 221 is rotatably connected to a brake housing 223. The outside of the fixed shaft 221 is fixedly connected to a return spring 222, which is fixedly connected to the inside of the brake housing 223. The inside of the wheel frame 1 is fixedly connected to a fixed baffle 224, and the bottom of the fixed baffle 224 is fixedly connected to a brake pad 225. The brake housing 223 is rotatable through the cooperation of the return spring 222 and the fixed shaft 221, and has adjustability. The brake housing 223 is in contact with the brake pad 225, and the brake pad 225 is in contact with the brake housing 223. Through the action of the brake housing 223 on the brake pad 225, the fixed shaft 221 is in contact with the roller 214, so that the roller 214 is restricted, which has restrictive and controllable effects.

[0028] In this embodiment, the movable mechanism 3 includes a vertical shaft 32, the vertical shaft 32 is movably connected to the inside of the wheel frame 1, the vertical shaft 32 is movably connected to the wheel seat 31 outside, the top of the vertical shaft 32 is fixedly connected to a snap ring 37, the inside of the snap ring 37 is rotatably connected to a spring damper 38, the spring damper 38 is fixedly connected to the inside of the wheel seat 31, the outside of the vertical shaft 32 is slidably connected to a slide plate 33, a shock-absorbing spring 34 is fixedly connected between the slide plate 33 and the wheel seat 31, the outside of the vertical shaft 32 is movably connected to a rubber ring 35, the The internal thread of the wheel frame 1 is connected with a bayonet 36, and the spring damper 38 is arranged to cooperate with the vertical shaft 32 inside the wheel seat 31 so that the wheel seat 31 can rotate, and has variability and adjustability. The wheel seat 31 is provided with a slide groove corresponding to the external position of the snap ring 37, and the snap ring 37 moves inside the slide groove. The slide plate 33 is in contact with the rubber ring 35. The vertical shaft 32 is provided with a through hole at the corresponding position of the bayonet 36, and the bayonet 36 moves inside the through hole. The bayonet 36 fixes the wheel frame 1 and the spring damper 38 through the opened through hole to limit it, which has limitation.

[0029] In actual operation, when the device is used, the threaded cap 212 is twisted to disengage the threaded fixed shaft 211 from the threaded cap 212 and removed. After the threaded fixed shaft 211 is disengaged, the roller 214 and the limiting ring 213 are also disengaged. In this way, we have completed its disassembly. By toggling the brake card shell 223, the return spring 222 shrinks the brake card shell 223 and contacts the brake pad 225, so that the brake pad 225 contacts the roller 214 to play a braking role. Then we loosen the brake card shell 223 and the return spring 222 returns. The spring 222 is in contact with the fixed baffle 224, which limits the brake casing 223. The roller 214 is driven to move by dragging the required object. The roller 214 is connected to the wheel frame 1, and the wheel frame 1 is connected to the vertical shaft 32 through the bayonet 36. The vertical shaft 32 moves inside the wheel seat 31, so that the wheel frame 1 can rotate with the rotation of the snap ring 37. The cooperation of the shock-absorbing spring 34, the wheel seat 31 and the rubber ring 35 can relieve the overweight objects, thereby making the entire caster operate.

Claims

1. A quickly detachable caster, comprising a wheel frame (1), characterized in that: A sliding mechanism (2) is provided inside the wheel frame (1), and a movable mechanism (3) is provided inside the wheel frame (1); The sliding mechanism (2) comprises a pulley assembly (21) and a brake assembly (22); the pulley assembly (21) is arranged inside the wheel frame (1); and the brake assembly (22) is arranged inside the wheel frame (1).

2. The quickly detachable caster according to claim 1, characterized in that: The pulley assembly (21) comprises a threaded fixed shaft (211), the threaded fixed shaft (211) is movably connected to the inside of the wheel frame (1), the external thread of the threaded fixed shaft (211) is connected to a threaded cap (212), the external movably connected to the threaded fixed shaft (211) is connected to a limiting ring (213), and the external movably connected to the threaded fixed shaft (211) is connected to a roller (214).

3. The quickly detachable caster according to claim 2, characterized in that: Two limiting rings (213) are provided, and the two limiting rings (213) are symmetrically and movably connected to the outside of the threaded fixed shaft (211), and the limiting rings (213) are in contact with the roller (214).

4. The quickly detachable caster according to claim 2, characterized in that: The brake assembly (22) comprises a fixed shaft (221), the fixed shaft (221) is fixedly connected to the inside of the wheel frame (1), the outside of the fixed shaft (221) is rotatably connected to a brake housing (223), the outside of the fixed shaft (221) is fixedly connected to a return spring (222), the return spring (222) is fixedly connected to the inside of the brake housing (223), the inside of the wheel frame (1) is fixedly connected to a fixed baffle (224), and the bottom of the fixed baffle (224) is fixedly connected to a brake pad (225).

5. The quickly detachable caster according to claim 4, characterized in that: The brake housing (223) is in contact with the brake pad (225), and the brake pad (225) is in contact with the brake housing (223).

6. The quickly detachable caster according to claim 1, characterized in that: The movable mechanism (3) comprises a vertical shaft (32), the vertical shaft (32) is movably connected to the inside of the wheel frame (1), the vertical shaft (32) is movably connected to the wheel seat (31) outside, the top of the vertical shaft (32) is fixedly connected to a snap ring (37), the inside of the snap ring (37) is rotatably connected to a spring damper (38), the spring damper (38) is fixedly connected to the inside of the wheel seat (31), the outside of the vertical shaft (32) is slidably connected to a slide plate (33), a shock-absorbing spring (34) is fixedly connected between the slide plate (33) and the wheel seat (31), the outside of the vertical shaft (32) is movably connected to a rubber ring (35), and the inside of the wheel frame (1) is threadedly connected to a bayonet (36).

7. The quickly detachable caster according to claim 6, characterized in that: The wheel seat (31) is provided with a sliding groove at the outside corresponding to the clamping ring (37), the clamping ring (37) moves inside the sliding groove, the sliding sheet (33) is in contact with the rubber ring (35), and the vertical shaft (32) is provided with a through hole at a position corresponding to the bayonet (36), and the bayonet (36) moves inside the through hole.

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