Universal wheel braking structure

Abstract

The utility model discloses a universal wheel brake structure which comprises a sleeve cap, a rotating wheel, a rolling wheel, a shifting assembly and a brake block. The sleeve cap is provided with a cavity, the bottom end of the cavity is open so that the rotating wheel can be installed in the cavity, the rotating wheel extends out of a connecting lug, and the connecting lug of the rotating wheel installed in the cavity extends out of the cavity. A shaft core penetrates through the roller, the shaft core is connected to the connecting lug so as to assemble the roller on the rotating wheel, and the roller freely rotates relative to the shaft core; clamping teeth are arranged at the ends of the rolling wheels, clamping openings are formed in the brake blocks, and the brake blocks are rotationally connected to the rotating wheels; the shifting assembly comprises a pressing rod and a pushing block, the top end of the pressing rod is connected with the pushing block so as to drive the pressing rod to move through the pushing block, and the bottom end of the pressing rod abuts against the tail end of the brake block; the moving pressing rod is connected with the brake block in a pressing mode, so that the brake block rotates to control the bayonet to be movably connected with the clamping teeth, and the rotating state of the rolling wheel is adjusted. The device has the advantages of simple structure, compact matching, reasonable design and the like; the utility model is a product with excellent technical and economical performance.

Description

TECHNICAL FIELD

[0001] The utility model mainly relates to a kind of universal wheel brake structure. BACKGROUND

[0002] Now many furniture such as bed head, chair, file cabinet etc., usually have universal wheel at bottom, to reduce the time-consuming and laborious of manual handling;Universal wheel is so-called movable caster, its structure allows 360 degree rotation horizontally. The brake mode of the universal wheel commonly used at present is through contact friction, uses friction to suppress wheel body rotation to realize brake, but this friction brake mode increases with time and is prone to wear, reduces the service life of product. In view of this, we propose a new scheme for the brake mode of universal wheel. UTILITY MODEL CONTENTS

[0003] To solve at least one of the above problems, the utility model provides a new structural scheme, and the universal wheel brake structure adopts the following technical scheme:

[0004] A kind of universal wheel brake structure, it includes sleeve cap, rotating wheel, roller, push component and brake block;

[0005] Sleeve cap has cavity, the bottom end of cavity is open to install rotating wheel into cavity, rotating wheel extends lug, and lug of rotating wheel installed in cavity extends outside cavity;

[0006] Roller is connected with shaft core, and shaft core is connected to lug to assemble roller on rotating wheel, and roller rotates freely relative to shaft core;The end of roller is provided with click, and brake block is provided with socket, and brake block is rotatably connected to rotating wheel;

[0007] Push component includes pressing rod and push block, the top end of pressing rod is connected with push block, to drive pressing rod to move by push block, and the bottom end of pressing rod is abutted with the end of brake block;The moving pressing rod is pressed brake block, so that brake block rotates, to control the movable connection of socket and click, and adjust the rotating state of roller.

[0008] Preferably, the push component further includes limiting fastener, limiting fastener extends out from buckle, sleeve cap is provided with interface, and buckle is connected with interface to fix limiting fastener on sleeve cap.

[0009] Preferably, push block extends out from convex part, limiting fastener is provided with opening, push block is placed in limiting fastener, and convex part extends out from limiting fastener outside opening.

[0010] Preferably, limiting part is arranged in limiting fastener, and limiting part is arranged on both sides of opening, and push block is arranged between the limiting parts on both sides.

[0011] Preferably, the front end of the brake block is provided with a spring, the spring is arranged in the cavity, and the two ends of the spring abut against the brake block and the cap respectively, so as to reset the brake block by the spring.

[0012] Preferably, the end of the brake block is provided with a long groove, and the bottom end of the pressing rod abuts against the long groove.

[0013] Preferably, the pressing rod is provided with a bending position, so that the overall pressing rod is in a bending shape.

[0014] Preferably, the pushing block is provided with a stepped position for the movable connection of the pressing rod.

[0015] The beneficial effects of the utility model compared with the prior art are as follows:

[0016] The utility model provides a universal wheel brake structure, drives the pressing rod through the pushing block, and the stepped position of the pressing rod and the pushing block is movably connected, so that the pressing rod realizes up-down movement, thereby controlling the rotation of the two ends of the brake block abutting against the pressing rod, and the pressing rod is movably connected with the clamping teeth through the bayonet, so as to realize the control of the rolling of the roller. Compared with the traditional friction brake, the clamping brake can avoid wearing parts, and can quickly respond to braking, and has the advantages of simple structure, compact cooperation, reasonable design and the like. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 The utility model provides the universal wheel brake structure schematic drawing in preferable embodiment for the utility model;

[0018] Fig. 2 The utility model provides the universal wheel brake structure exploded view in preferable embodiment for the utility model;

[0019] Fig. 3 The utility model provides the limiting buckle schematic drawing in preferable embodiment for the utility model;

[0020] Fig. 4 The utility model provides the pushing block schematic drawing in preferable embodiment for the utility model.

DETAILED DESCRIPTION

[0021] The embodiments of the utility model are described in detail below, and the embodiment examples are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout.

[0022] In the utility model, except another explicit stipulation and limitation, if there are terms "assemble", "connect" and "link", the terms should be understood in broad sense, for example, it can be fixed connection, can be detachable connection, or integrally connected, can be mechanical connection, can be directly connected, can be connected through intermediate medium, and can be connected inside two elements. For ordinary skilled person in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0023] The technical scheme and beneficial effects of the utility model will be clearer and more explicit by further describing the specific embodiments of the utility model in combination with the drawings of the specification. The embodiments described below with reference to the drawings are exemplary, and are intended to explain the utility model, and cannot be understood as the limitation of the utility model.

[0024] The preferred embodiment provided by the utility model shows a kind of universal wheel brake structure, it includes sleeve cap 1, rotating wheel 2, roller 3, dialing assembly 4 and brake block 5. Figs. 1-4 As shown in the drawing, a kind of universal wheel brake structure, it includes sleeve cap 1, rotating wheel 2, roller 3, dialing assembly 4 and brake block 5.

[0025] Sleeve cap 1 has cavity, the bottom end of cavity is open to be installed rotating wheel 2 into cavity, rotating wheel 2 extends ear 21, and ear 21 of rotating wheel 2 in cavity is installed and extends outside cavity.

[0026] Roller 3 has through hole 31, roller 3 is connected with shaft core 32, shaft core 32 passes through through hole 31, both ends of shaft core 32 are extended through through hole 31, and shaft core 32 is connected to ear 21 to assemble roller 3 on rotating wheel 2, and roller 3 is freely rotated relative to shaft core 32;End of roller 3 is equipped with detent 33, detent 33 is located at both ends of roller 3, brake block 5 is equipped with bayonet 51, bayonet 51 is located at both ends of brake block 5, and the position of bayonet 51 corresponds to the position of detent 33, and brake block 5 is rotationally connected to rotating wheel 2.

[0027] Dialing assembly 4 includes limiting buckle 6, press bar 7 and push block 8, the top end of press bar 7 is connected with push block 8, to drive press bar 7 to move by push block 8, and the bottom end of press bar 7 is abutted with the end of brake block 5;Press bar 7 is pressed brake block 5 by moving, so that brake block 5 rotates, to control the movable connection of bayonet 51 and detent 33, and adjust the rotating state of roller 3. Press bar 7 is equipped with bending position 71 to make press bar 7 as a whole bending, to cooperate with the rotation of roller 3.

[0028] The limiting buckle 6 extends a buckle leg 61, the sleeve cap 1 is provided with an interface 11, the buckle leg 61 is connected with the interface 11 to fix the limiting buckle 6 on the sleeve cap 1, the limiting buckle 6 protrudes from the upper end surface of the sleeve cap 1, and is used for assisting assembly of the push block 8. The push block 8 is arranged on the upper end surface of the sleeve cap 1 and located in the limiting buckle 6. The sleeve cap 1 is correspondingly provided with a through hole 31 for the top end of the pressure rod 7 to pass through the sleeve cap 1 and be connected with the push block 8. The diameter of the through hole 31 is consistent with the diameter of the pressure rod 7, so that the pressure rod 7 is limited from moving horizontally and can only move up and down relative to the through hole 31. The push block 8 vertically extends a convex part 81, and the limiting buckle 6 is provided with an opening 62. The push block 8 is arranged in the limiting buckle 6, and the convex part 81 extends out of the limiting buckle 6 from the opening 62. The inner space of the limiting buckle 6 is larger than the size of the push block 8, and the push block 8 can be moved in the limiting buckle 6 by the convex part 81. The limiting buckle 6 is provided with limiting parts 83 arranged on both sides of the opening 62, and the push block 8 is arranged between the limiting parts 83 on both sides. Further, the push block 8 is provided with a baffle 82 on both sides, and the movement direction of the push block 8 is limited by cooperation of the limiting parts 83 and the baffle 82. The push block 8 is provided with a stepped part 84, and the end of the stepped part 84 is provided with a circular recess for facilitating the end of the pressure rod to be connected.

[0029] The brake block is located above the roller, and the brake block is located between the roller and the pushing assembly. The front end of the brake block 5 is provided with a spring 52 arranged in a cavity, and the two ends of the spring 52 abut against the brake block 5 and the sleeve cap 1 respectively, so as to reset the brake block 5 by the spring 52. The front end of the brake block 5 is correspondingly provided with a recess hole 53 for the spring 52 to be connected. The end of the brake block 5 is provided with a long groove 54, and the bottom end of the pressure rod 7 abuts against the long groove 54, and the long groove 54 limits the movement range of the pressure rod 7. The two sides of the brake block 5 respectively extend convex columns 55, and the lug 21 is correspondingly provided with a hole position for the convex columns 55 to be connected, so that the brake block is rotatably connected to the rotating wheel 2, and the two ends of the brake block 5 are conveniently rocked. The push block 8 is pushed to move, the top end of the pressure rod 7 is connected with the stepped part 84 of the push block 8, different positions of the stepped part 84 are contacted, the pressure rod 7 is lowered to push the brake block 5, the pressure of the pressure rod 7 is greater than the spring 52, so that the front end of the brake block 5 is rocked upward, the connection between the clamping hole 51 and the tooth 33 is released, and the roller 3 can rotate at this time. When the universal wheel is locked, the push block 8 is moved, the pressure rod 7 is moved upward, the elastic force of the spring 52 is greater than the pressure of the pressure rod 7, the front end of the brake block 5 is rocked downward, the clamping hole 51 is reconnected with the tooth 33, and the roller 3 is limited to rotate at this time.

[0030] In the description of the specification, the description of the terms "one embodiment", "preferably", "example", "specific example" or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model, and the illustrative description of the above terms in the specification does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0031] Through the description of the structure and principle described above, those skilled in the art should understand that the utility model is not limited to the specific embodiments described above, and improvements and replacements of the technology known in the art based on the utility model all fall within the protection scope of the utility model, which should be limited by the claims.

Claims

1. A castor brake structure characterized by: It includes a cover, a rotating wheel, a roller, a pushing assembly and a brake block. The cover has a cavity, the bottom end of the cavity is open for the rotating wheel to be installed in the cavity, the rotating wheel extends an ear, the ear of the rotating wheel installed in the cavity extends out of the cavity; The roller is provided with a shaft core, and the shaft core is connected to the ear to assemble the roller on the rotating wheel, the roller rotates freely relative to the shaft core; the end of the roller is provided with a tooth, the brake block is provided with a notch, and the brake block is rotationally connected to the rotating wheel; The pushing assembly includes a pressing rod and a push block, the top end of the pressing rod is connected to the push block to drive the pressing rod to move through the push block, and the bottom end of the pressing rod abuts against the end of the brake block; the moving pressing rod presses the brake block to rotate, so that the notch and the tooth are movably connected to adjust the rotating state of the roller.

2. The gimbal wheel brake structure according to claim 1, characterized by: The pushing assembly further includes a limiting buckle, the limiting buckle extends a buckle leg, the cover is provided with a joint, and the buckle leg is connected to the joint to fix the limiting buckle to the cover.

3. The gimbal wheel brake structure according to claim 1, characterized by: The push block vertically extends a convex part, the limiting buckle is provided with an opening, the push block is arranged in the limiting buckle, and the convex part extends out of the limiting buckle from the opening.

4. The in-wheel brake structure according to claim 2, characterized by: The limiting buckle is provided with a limiting part, the limiting part is arranged on both sides of the opening, and the push block is arranged between the limiting parts on both sides.

5. The gimbal wheel brake structure according to claim 1, characterized by: The front end of the brake block is provided with a spring, the spring is arranged in the cavity, and both ends of the spring abut against the brake block and the cover respectively to reset the brake block through the spring.

6. The in-wheel brake structure according to claim 1, characterized by: The end of the brake block is provided with a long groove, and the bottom end of the pressing rod abuts against the long groove.

7. The in-wheel brake structure according to claim 1, characterized by: The pressing rod is provided with a bending position to make the pressing rod as a whole in a bent shape.

8. The in-wheel brake structure according to claim 1, characterized by: The push block is provided with a stepped position for the pressing rod to movably connect.

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