CN212737617U

CN212737617U - Side brake type caster

Info

Publication number: CN212737617U
Application number: CN202021409639.2U
Authority: CN
Inventors: 利伟坚
Original assignee: Guangzhou Conghua Xinxing Metal Caster Products Co ltd
Current assignee: Guangzhou Xinxing Metal Co.,Ltd.
Priority date: 2020-07-16
Filing date: 2020-07-16
Publication date: 2021-03-19
Anticipated expiration: 2030-07-16

Abstract

The utility model relates to the technical field of trundle, in particular to an edge brake type trundle, which comprises a trundle bracket and a wheel arranged at the lower part of the trundle bracket, wherein the wheel is rotatably connected with a wheel shaft of the trundle bracket through a bearing; brake pedal and brake frame drive the brake frame through cam drive's mode and reciprocate, and easy and simple to handle is laborsaving, and drive disk assembly is few, simple structure, and brake frame leads through guide block and vertical guide hole cooperation with the truckle support moreover, and stability is good.

Description

Side brake type caster

Technical Field

The utility model relates to a truckle technical field specifically is limit type truckle of stopping.

Background

A caster is a common mechanical hardware fitting, which is widely applied to the bottom of a carrying device (such as furniture, a cart, a machining device, and a medical apparatus) for facilitating the movement of the carrying device. In order to facilitate timely braking, casters are generally required to have a dead-locked roll; at present, the locking of wheel is realized to current truckle often adopt pedal or press brake pedal, but current brake structure is complicated, and transmission part is many, the weak user's operation of the weak of not being convenient for health.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model aims to provide a simple structure transmission part is few and convenient to use person operates's limit type truckle of stopping.

The utility model discloses the task is realized through following technical scheme:

the side-braking type caster comprises a caster bracket and wheels arranged at the lower part of the caster bracket, wherein the wheels are rotatably connected with a wheel shaft of the caster bracket through bearings, one side of the caster bracket is provided with a brake mechanism, the brake mechanism comprises a brake pedal and a brake frame, the brake frame is sleeved on the wheel shaft through a guide hole vertically arranged on the brake frame, the upper end of the brake frame is vertically connected with a brake pad, and the brake pad is positioned above the wheels; the brake frame is provided with a guide block, and the caster wheel bracket is provided with a vertical guide hole matched with the guide block; the brake device comprises a brake frame, a side plate, a lower stop block, an upper cam, a lower cam, a guide hole, a guide block and a brake block, wherein the side plate of the brake frame is provided with the upper stop block and the lower stop block which are arranged up and down; when the brake pedal rotates anticlockwise, the upper cam curved surface of the brake pedal rotates and abuts against the upper stop block to drive the brake frame to move upwards under the guiding of the guide hole until the lower surface of the brake pad is separated from the outer side of the wheel, and the braking of the caster wheel is relieved.

Preferably, both ends of the brake pedal are respectively bent outwards to form an unlocking pedal and a brake pedal.

Preferably, the lower surface of brake block is equipped with a plurality of concave-convex structures that are used for with the outside butt of wheel circumference.

Preferably, the top plate of the caster bracket is movably provided with a turntable assembly capable of horizontally rotating, the turntable assembly comprises an upper waveplate, a lower waveplate, a plurality of first balls, a plurality of second balls and fasteners, the top plate is provided with an annular connecting part, the connecting part is positioned between the upper wave plate and the lower wave plate, the lower surface of the upper wave plate and the upper surface of the connecting part are respectively and oppositely provided with a first annular groove and a second annular groove, the lower surface of the connecting part and the upper surface of the lower wave plate are respectively and oppositely provided with a third annular groove and a fourth annular groove, the sections of the first annular groove, the second annular groove, the third annular groove and the fourth annular groove are all in concave arc structures, the first ball is arranged between the first ring groove and the second ring groove, the second ball is arranged between the third ring groove and the fourth ring groove, the caster wheel bracket is rotationally connected with the turntable assembly through a first ball and a second ball, and the fastening piece sequentially and vertically penetrates through the through holes in the centers of the upper wave plate and the lower wave plate and fastens the upper wave plate and the lower wave plate together.

Preferably, the through hole edges of the upper wave plate and the lower wave plate are tightly attached together under the action of the fastening piece, the inner side wall of the through hole is tightly attached to the outer side wall of the fastening piece, the upper end head circumferential side wall of the fastening piece is abutted to the upper wave plate, and the lower end head circumferential side wall of the fastening piece is abutted to the lower wave plate.

Preferably, a plurality of waist-shaped grooves are formed in the periphery of the top plate, and the waist-shaped grooves are distributed along the circumferential direction.

Preferably, the outer side of the bearing is coated with a polyurethane mute ring.

Compared with the prior art, the utility model discloses limit type truckle of stopping has following advantage:

1. the brake pedal and the brake frame drive the brake frame to move up and down in a cam transmission mode, the operation is simple and labor-saving, the transmission parts are few, the structure is simple, and the brake frame and the caster bracket are guided by matching the guide blocks and the vertical guide holes, so that the stability is good; 2. set up concave-convex structure at the brake block lower surface, can increase the frictional force of brake block and wheel, improve braking effect.

The conception, the specific structure and the effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.

Drawings

Fig. 1 is a schematic view of an angle structure of the edge brake type caster of the present invention;

fig. 2 is a schematic view of another angle of the edge brake type caster of the present invention;

FIG. 3 is an exploded view of the side brake caster of the present invention;

fig. 4 is a sectional view of the edge brake type caster of the present invention.

Wherein: the brake device comprises a caster bracket 1, a top plate 11, an annular connecting part 111, a wheel shaft 12, a waist-shaped groove 13, a polyurethane mute ring 14, a vertical guide hole 15, a wheel 2, a turntable assembly 3, an upper wave plate 31, a lower wave plate 32, a fastener 35, a brake mechanism 4, a brake pedal 41, an unlocking pedal 411, a brake pedal 412, a brake frame 42, a guide hole 43, a brake pad 44, a concave-convex structure 441, an upper stop block 45, a lower stop block 46, an upper cam curved surface 47, a lower cam curved surface 48 and a guide block 49.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the description of the specific embodiments is intended to be illustrative only and is not intended to be limiting.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be indirectly connected to the other element through intervening elements. Also, the terms "upper", "lower", "left", "right", "upper", "lower", "lateral", "vertical", and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

As shown in fig. 1-4, the limit brake type caster comprises a caster bracket 1 and a wheel 2 installed at the lower part of the caster bracket 1, wherein the wheel 2 is rotatably connected with a wheel shaft 12 of the caster bracket 1 through a bearing, a brake mechanism 4 is arranged at one side of the caster bracket 1, the brake mechanism 4 comprises a brake pedal 41 and a brake frame 42, a guide hole 43 vertically arranged is formed in the brake frame 42, namely, the brake frame 42 has a space moving up and down, the guide hole 43 is sleeved on the wheel shaft 12, and when the brake frame 42 moves up and down, the guide hole 43 is driven to move up and down relative to the wheel shaft 12. The upper end of the brake frame 42 is vertically connected with a brake pad 44, and the brake pad 44 is positioned above the wheel 2; the side plate of the brake frame 42 is provided with an upper stop block 45 and a lower stop block 46 which are arranged up and down, the brake pedal 41 is installed on the outer side of the brake frame 42, the brake pedal 41 is hinged to the wheel shaft 12, an eccentric cam is arranged on the brake pedal 41, an upper cam curved surface 47 of the eccentric cam is matched with the upper stop block 45, and a lower cam curved surface 48 of the eccentric cam is matched with the lower stop block 46. Brake frame 42 is equipped with guide block 49, be equipped with the cooperation on the truckle support 1 the vertical guide hole 15 of guide block 49, guide block 49 insert vertical guide hole 15 in and guide brake frame 42 reciprocate, prevent that brake frame 42 from rocking about, vertical guide hole 15 and guide block 49 cooperation play the effect that guide brake frame 42 removed. When the brake pedal 41 is rotated clockwise, the lower cam curved surface 48 of the brake pedal 41 rotates and abuts against the lower stop block 46 to drive the brake frame 42 to move downwards under the guidance of the guide hole 43 until the lower surface of the brake pad 44 abuts against the outer side of the wheel 2 and brakes the caster; when the brake pedal 41 is rotated counterclockwise, the upper cam curved surface 47 of the brake pedal 41 rotates and abuts against the upper stopper 45 to drive the brake frame 42 to move upward under the guidance of the guide hole 43 until the lower surface of the brake pad 44 is separated from the outer side of the wheel 2, and the brake on the caster is released. In this embodiment, with brake mechanism 4 setting in one side of truckle support 1, the operating personnel of being convenient for operates, and truckle braking is convenient. The guide block 49 is inserted into the vertical guide hole 15, and when the brake frame 42 moves up and down, the guide block 49 moves up and down in the vertical guide hole 15, guiding the brake frame 42 to move up and down. The brake pedal 41 and the brake frame 42 drive the brake frame 42 to move up and down in a cam transmission mode, the operation is simple and labor-saving, the number of transmission parts is small, and the structure is simple.

The two ends of the brake pedal 41 are respectively provided with an unlocking pedal 411 and a brake pedal 412 in an outward bending mode, the upper cam curved surface 47 is located between the unlocking pedal 411 and the brake pedal 412, and when the caster needs to be braked, the brake pedal 412 is pressed to rotate clockwise, so that the caster can be braked. When the caster needs to be unlocked, the unlocking pedal 411 is pressed to enable the unlocking pedal 411 to rotate towards the counterclockwise direction, and then braking of the caster can be unlocked.

The lower surface of brake block 44 is equipped with a plurality of concave-convex structures 441 that are used for with the outside butt of 2 circumference of wheel, adopts concave-convex structure 441, further increases the contact between brake block 44 and the 2 outsides of wheel for frictional force increases when the truckle is braked, and operating personnel only need lightly press brake pedal 412 can make brake block 44 and the braking of wheel 2, makes the braking of truckle more swift, and it is few to relate to the structure, and transmission part is few, convenient operation.

The top plate of the caster bracket 1 is movably provided with a rotary table component 3 capable of horizontally rotating, the rotary table component 3 comprises an upper wave plate 31, a lower wave plate 32, a plurality of first balls, a plurality of second balls and a fastener 35, the top plate 11 of the caster bracket 1 is provided with an annular connecting part 111, the connecting part 111 is arranged between the upper wave plate 31 and the lower wave plate 32, the lower surface of the upper wave plate 31 and the upper surface of the connecting part 111 are respectively and oppositely provided with a first annular groove and a second annular groove, the lower surface of the connecting part 111 and the upper surface of the lower wave plate 32 are respectively and oppositely provided with a third annular groove and a fourth annular groove, the cross sections of the first annular groove, the second annular groove, the third annular groove and the fourth annular groove are both of concave arc structures, the connecting part 111 is provided with an oil injection joint used for lubricating the first balls 33 and used for injecting lubricating oil, the oil joint and the first balls 33 are both arranged between the first annular groove and the second annular groove, the caster bracket 1 is rotatably connected with the turntable assembly 3 through a first ball and a second ball, and a fastener 35 vertically penetrates through the through holes in the centers of the upper wave plate 31 and the lower wave plate 32 in sequence and fastens the upper wave plate 31 and the lower wave plate 32 together.

The perforated edges of the upper wave plate 31 and the lower wave plate 32 are tightly attached together under the action of the fastener 35, the perforated inner side wall is tightly attached to the outer side wall of the fastener 35, the upper end head circumferential side wall of the fastener 35 is abutted against the upper wave plate 31, and the lower end head circumferential side wall of the fastener 35 is abutted against the lower wave plate 32. This design makes wave disc 31 and wave disc 32 under and support each other in circumference, and the both ends of fastener 35 respectively with wave disc 31, wave disc 32 under and radially support each other, and the lateral wall of fastener 35 respectively with wave disc 31, wave disc 32 under and radially support each other for the carousel subassembly 3 of truckle support 1 has excellent overall structure intensity, stability and bearing capacity.

The top plate is provided with a plurality of waist-shaped grooves 13 all around, and is a plurality of the waist-shaped grooves 13 are distributed along the circumferential direction, and the structure can effectively ensure the flexible installation and adjustment of the top plate and the structure placed on the top plate, so that the quick installation is realized, and the installation and maintenance time is reduced.

The outer side and the front side of the bearing are both coated with the polyurethane mute ring 14, so that the noise generated by the caster wheel in use can be obviously reduced, the environment is improved, and the service life of the bearing can be prolonged.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be understood by those skilled in the art that the scope of the present invention is not limited to the specific combination of the above-mentioned features, but also covers other embodiments formed by any combination of the above-mentioned features or their equivalents without departing from the spirit of the present invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. The side-braking type caster is characterized by comprising a caster bracket and wheels arranged at the lower part of the caster bracket, wherein the wheels are rotatably connected with a wheel shaft of the caster bracket through bearings; the brake frame is provided with a guide block, and the caster wheel bracket is provided with a vertical guide hole matched with the guide block; the brake device comprises a brake frame, a side plate, a lower stop block, an upper cam, a lower cam, a guide hole, a guide block and a brake block, wherein the side plate of the brake frame is provided with the upper stop block and the lower stop block which are arranged up and down; when the brake pedal rotates anticlockwise, the upper cam curved surface of the brake pedal rotates and abuts against the upper stop block to drive the brake frame to move upwards under the guiding of the guide hole until the lower surface of the brake pad is separated from the outer side of the wheel, and the braking of the caster wheel is relieved.

2. The edge-brake type caster wheel according to claim 1, wherein both ends of said brake pedal are respectively bent outward with an unlocking pedal and a brake pedal.

3. The edge-brake type caster wheel according to claim 1, wherein the lower surface of said brake pad is provided with a plurality of concave-convex structures for abutting against the outer side of the circumference of the wheel.

4. The edge-brake type caster wheel as claimed in claim 1, wherein the top plate of the caster wheel bracket is movably mounted with a rotating plate assembly capable of horizontally rotating, the rotating plate assembly comprises an upper wave plate, a lower wave plate, a plurality of first balls, a plurality of second balls and fasteners, the top plate is provided with an annular connecting portion, the connecting portion is located between the upper wave plate and the lower wave plate, the lower surface of the upper wave plate and the upper surface of the connecting portion are respectively and oppositely provided with a first annular groove and a second annular groove, the lower surface of the connecting portion and the upper surface of the lower wave plate are respectively and oppositely provided with a third annular groove and a fourth annular groove, the cross sections of the first annular groove, the second annular groove, the third annular groove and the fourth annular groove are all concave arc structures, the first balls are arranged between the first annular groove and the second annular groove, the second balls are arranged between the third annular groove and the fourth annular groove, the caster wheel bracket and the rotating plate assembly are rotatably connected through the, the fasteners vertically penetrate through the through holes in the centers of the upper wave plate and the lower wave plate in sequence and fasten the upper wave plate and the lower wave plate together.

5. The edge brake type caster wheel of claim 4, wherein the perforated edges of the upper wave plate and the lower wave plate are tightly attached to each other by the fastener, the inner side wall of the perforated edge is tightly attached to the outer side wall of the fastener, the upper end circumferential side wall of the fastener abuts against the upper wave plate, and the lower end circumferential side wall of the fastener abuts against the lower wave plate.

6. The edge-brake type caster wheel as claimed in claim 4, wherein a plurality of waist-shaped grooves are arranged around the top plate, and a plurality of the waist-shaped grooves are distributed along the circumferential direction.

7. The edge-brake type caster wheel according to any one of claims 1 to 6, wherein the bearing is externally coated with a polyurethane silent ring.