CN114987115A

CN114987115A - Caster wheel

Info

Publication number: CN114987115A
Application number: CN202210580402.8A
Authority: CN
Inventors: 周君涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-05-26
Filing date: 2022-05-26
Publication date: 2022-09-02

Abstract

The invention relates to a caster which comprises a shell, a brake piece and a first pedal. The casing is provided with a wheel body which rotates around an axial direction. The brake piece comprises a pin joint part, a connecting part and a brake part, wherein the connecting part is positioned between the pin joint part and the brake part, and two brake pads are arranged at two opposite ends of the connecting part along the axial direction. The first pedal is arranged on the shell and can swing to a first position and a second position. The invention can avoid wearing the tyre crown of the wheel body to reduce the service life of the wheel body, thereby improving the durability of the wheel body and ensuring higher braking force.

Description

Caster wheel

Technical Field

The invention relates to a caster.

Background

Generally, a caster with braking function is basically composed of a casing and a wheel body pivoted to the casing, a braking unit is arranged between the casing and the wheel body, the braking unit is a braking plate which can be pushed to press the wheel body, a pedal is additionally arranged on the casing, when the pedal swings downwards, the pedal can push the braking plate to abut against the wheel body to brake, when the pedal swings upwards, the braking plate does not abut against the wheel body, and the wheel body can rotate.

However, the brake plate of the conventional caster abuts against the tire crown of the wheel body (i.e. the arc top of the tire), which causes the tire crown and the brake plate to wear, thereby greatly reducing the service life of the wheel body, and when the tire crown is worn too much, the braking effect will be greatly reduced, which causes a safety concern, and there is a drawback to be improved.

Therefore, there is a need for a new and improved caster that solves the above problems.

Disclosure of Invention

The present invention is directed to a caster that can prevent wear of a crown of a wheel body to reduce a life of the wheel body, thereby improving durability of the wheel body and ensuring high braking force.

To achieve the above objective, the present invention provides a caster, which comprises a housing, a braking member and a first pedal. The casing is provided with a wheel body which rotates around an axial direction. The brake piece comprises a pivot part, a connecting part and a braking part, wherein the connecting part is positioned between the pivot part and the braking part, two brake pads are arranged at two opposite ends of the connecting part along the axial direction, the two brake pads incline towards the direction of the wheel body relative to the connecting part, and the pivot part is pivoted on the shell. The first pedal is arranged on the shell and can swing to a first position and a second position, when the first pedal is positioned at the first position, the two brake pads are not contacted with the wheel body, and when the first pedal swings to the second position, the first pedal props against the braking part to enable the brake piece to swing, and the two brake pads prop against the wheel body.

Preferably, the pivot portion is pivotally disposed on the housing through a first pivot, and an extending direction of the first pivot is parallel to the axial direction.

Preferably, the housing includes two side walls and a top wall, the top wall is connected between the two side walls, the wheel body is pivoted between the two side walls, the braking member is located between the wheel body and the top wall, and a resilient piece is convexly disposed at a connection portion between the pivoting portion and the connecting portion and resiliently abuts against the top wall.

Preferably, the two brake pads of the wheel body extend outward relative to the connecting portion, the wheel body includes a crown and two shoulders, and the two brake pads respectively abut against the two shoulders when the first pedal swings to the second position.

Preferably, the axial width of the connecting portion is smaller than the axial width of the pivoting portion and the width of the braking portion, and two grooves are formed, and the two brake pads integrally extend into the two grooves.

Preferably, a groove is concavely disposed above the braking portion, a protrusion is convexly disposed on a side of the first pedal facing the wheel body, and the protrusion abuts against the groove when the first pedal swings to the second position.

Preferably, the first pedal is pivotally connected to the housing by a second pivot, the first pedal includes a first pedaling end, the first pedaling end is away from the wheel body when the first pedal is located at the first position, and the first pedaling end swings towards the wheel body when the first pedal swings towards the second position.

Preferably, the first pedal further includes a top end, the second pivot is located between the first treading end and the top end, the caster further includes a second pedal, the second pedal includes a second treading end and a sliding end, the sliding end slidably abuts against a limit stop portion of the housing, the top end is pivotally connected to a portion of the second pedal located between the second treading end and the sliding end through a third pivot, the first treading end and the second treading end are overlapped when the first pedal is located at the first position, and when the first pedal swings towards the second position, the top end drives the second pedal to swing so that the first treading end and the second treading end are far away from swinging.

Preferably, the pedal device further includes a shaft rod rotatably inserted into the housing, a fluted disc is disposed at an end of the shaft rod extending into the housing, a locking portion is disposed at an end of the braking member away from the braking portion, the locking portion does not interfere with the fluted disc when the first pedal is at the first position, and the locking portion interferes with the fluted disc when the first pedal swings to the second position.

Preferably, the two brake pads of the wheel body extend outwards relative to the connecting portion, the wheel body includes a crown and two tire shoulders, and the two brake pads respectively abut against the two tire shoulders when the first pedal swings to the second position; the axial width of the connecting part is smaller than the axial width of the pivoting part and the width of the braking part, two grooves are formed, and the two brake pads integrally extend into the two grooves; a clamping groove is concavely arranged above the braking part, a clamping protrusion is convexly arranged on one side of the first pedal facing the wheel body, and when the first pedal swings to the second position, the clamping protrusion is clamped against the clamping groove; the first pedal is pivoted to the shell through a second pivot, the first pedal comprises a first stepping end, the first stepping end is far away from the wheel body when the first pedal is located at the first position, and the first stepping end swings towards the wheel body when the first pedal swings towards the second position; the first pedal also comprises a resisting end, the second pivot is positioned between the first treading end and the resisting end, the caster also comprises a second pedal, the second pedal comprises a second treading end and a sliding end, the sliding end can be glidingly propped against a limit stop part of the shell, the resisting end is pivoted with the part of the second pedal positioned between the second treading end and the sliding end through a third pivot, when the first pedal is positioned at the first position, the first treading end is superposed with the second treading end, and when the first pedal swings towards the second position, the resisting end drives the second pedal to swing so that the first treading end and the second treading end are far away from swinging; the brake piece is provided with a braking part, when the first pedal is positioned at the first position, the braking part does not interfere with the fluted disc, and when the first pedal swings to the second position, the braking part interferes with the fluted disc; the sides of the two side walls far away from each other are respectively provided with a sunken part, and each sunken part is detachably covered with a cover part; the two side walls are respectively provided with a lug piece in a protruding way, and the second pivot is pivoted with the two lug pieces.

The invention has the advantages that:

the caster wheel provided by the invention can avoid abrasion to the crown of the wheel body to reduce the service life of the wheel body, so that the durability of the wheel body can be improved, and higher braking force can be ensured.

Drawings

Fig. 1 is a perspective view of a preferred embodiment of the present invention.

Fig. 2 is an exploded view of a preferred embodiment of the present invention.

Fig. 3 is a partially enlarged view of fig. 2.

Fig. 4 to 5 are partial operation sectional views of a preferred embodiment of the present invention.

Fig. 6 to 7 are partially operational perspective views of a preferred embodiment of the present invention.

FIG. 8 is a top cross-sectional view of a preferred embodiment of the invention.

Detailed Description

The following description is given by way of example only, and is not intended to limit the scope of the invention.

Referring to fig. 1 to 5, which show a preferred embodiment of the caster of the present invention, the caster of the present invention comprises a housing 1, a braking member 2 and a first pedal 3.

The housing 1 is provided with a wheel 11, and the wheel 11 rotates around an axial direction 12.

The braking member 2 includes a pivoting portion 21, a connecting portion 22 and a braking portion 23, the connecting portion 22 is located between the pivoting portion 21 and the braking portion 23, two braking pads 24 are disposed at two opposite ends of the connecting portion 22 along the axial direction 12, the two braking pads 24 are inclined toward the wheel body 11 relative to the connecting portion 22, and the pivoting portion 21 is pivoted to the housing 1.

The first pedal 3 is disposed on the housing 1 and can swing between a first position and a second position, when the first pedal 3 is located at the first position (as shown in fig. 4 and 6), the two brake pads 24 are not in contact with the wheel body 11, and when the first pedal 3 swings to the second position (as shown in fig. 5 and 7), the first pedal 3 abuts against the braking portion 23 to swing the brake member 2, and the two brake pads 24 abut against the wheel body 11, so that the wheel body 11 cannot rotate arbitrarily (i.e., a braking state).

Therefore, since the connecting portion 22 is located between the pivot portion 21 and the braking portion 23, when the first pedal 3 abuts against the braking portion 23, the connecting portion 22 is pressed by the actuating portion and the pivot portion 21 to abut against the wheel body 11, so that the connecting portion 22 has a strong pressing force, and since the two brake pads 24 extend outward relative to the connecting portion 22, the wheel body 11 includes a tread 111 and two shoulders 112, when the first pedal 3 swings to the second position, the two brake pads 24 respectively abut against the two shoulders 112, so as to have a large contact area to improve the braking force, and avoid wearing the tread 111 of the wheel body 11 to reduce the service life of the wheel body 11, so as to improve the durability of the wheel body 11.

Specifically, the pivot portion 21 is pivoted to the housing 1 by a first pivot 16, and the extending direction of the first pivot 16 is parallel to the axial direction 12. The casing 1 includes two side walls 13 and a top wall 14, the top wall 14 is connected between the two side walls 13, the wheel 11 is pivoted between the two side walls 13, the braking member 2 is located between the wheel 11 and the top wall 14, a resilient sheet 25 is convexly disposed at a connection portion between the pivoting portion 21 and the connecting portion 22, the resilient sheet 25 is resiliently abutted to the top wall 14, so that the connecting portion 22 can normally swing away from the wheel 11.

The width 12 of the connecting portion 22 in the axial direction is smaller than the width 12 of the pivot portion 21 in the axial direction and the width of the braking portion 23, and two grooves 26 are formed, and the two brake pads 24 integrally extend into the two grooves 26, so that the two brake pads 24 are less prone to elastic fatigue.

Preferably, a concave slot 231 is disposed above the braking portion 23, a protruding portion 32 is disposed on a side of the first pedal 3 facing the wheel body 11, when the first pedal 3 swings to the second position, the protruding portion 32 is abutted against the slot 231, so that the first pedal 3 can be limited to the second position and will not be randomly reset to the first position.

Further, the first pedal 3 is pivotally connected to the housing 1 by a second pivot shaft 33, the first pedal 3 includes a first stepping end 34, the first stepping end 34 is far away from the wheel 11 when the first pedal 3 is located at the first position, and the first stepping end 34 swings towards the wheel 11 when the first pedal 3 swings towards the second position.

In this embodiment, the first pedal 3 further includes a top end 35, the second pivot 33 is located between the first stepping end 34 and the top end 35, the caster further includes a second pedal 4, the second pedal 4 includes a second stepping end 41 and a sliding end 42, the sliding end 42 slidably abuts against a limit stop portion 15 of the housing 1, the top end 35 is pivotally connected to a portion of the second pedal 4 located between the second stepping end 41 and the sliding end 42 by a third pivot 43, the first stepping end 34 and the second stepping end 41 are overlapped when the first pedal 3 is located at the first position, and when the first pedal 3 swings towards the second position, the top end 35 drives the second pedal 4 to swing so that the first stepping end 34 and the second stepping end 41 swing away from each other.

Therefore, when the first pedal 3 is to be returned from the second position to the first position (i.e. the braking state is released), the second stepping end 41 is only needed to be stepped towards the first stepping end 34, the second pedal 4 is pressed against the abutting end 35, and the first pedal 3 is returned to the first position, so that the operation is convenient and simple, the pedal is stepped from top to bottom when braking or releasing the braking, and the problem of scratching the shoe upper or the skin can be avoided. In addition, since the sliding end 42 is slidably disposed against the housing 1, the second pedal 4 can slide and swing relative to the housing 1, and thus the first stepping end 34 and the second stepping end 41 are far away from each other and swing to a larger extent, and the second pedal 4 can push and return the first pedal 3 to the first position with less effort.

It should be noted that, a concave portion 141 is respectively disposed on a side of the two side walls 13 away from each other, a cover member 142 is detachably disposed on each concave portion 141, and the cover member 142 may be provided with a marking portion to display a trademark or a number, thereby achieving an advertising effect or performing quantity control of the casters.

Preferably, the two side walls 13 are respectively protruded with a tab 143, and the second pivot 33 is pivotally connected to the two tabs 143, so that the first pedal 3 is protruded for stepping on conveniently.

The above description is of the preferred embodiment of the present invention and the technical principles applied thereto, and it will be apparent to those skilled in the art that any changes and modifications based on the equivalent changes and simple substitutions of the technical solution of the present invention are within the protection scope of the present invention without departing from the spirit and scope of the present invention.

Claims

1. A caster, comprising:

a housing provided with a wheel body which rotates around an axial direction;

the brake piece comprises a pivoting part, a connecting part and a braking part, wherein the connecting part is positioned between the pivoting part and the braking part, two brake pads are arranged at two opposite ends of the connecting part along the axial direction, the two brake pads incline towards the direction of the wheel body relative to the connecting part, and the pivoting part is pivoted on the shell;

the first pedal is arranged on the shell and can swing to a first position and a second position, when the first pedal is positioned at the first position, the two brake pads are not contacted with the wheel body, and when the first pedal swings to the second position, the first pedal props against the braking part to enable the brake piece to swing, and the two brake pads prop against the wheel body.

2. The caster as claimed in claim 1, wherein the pivot portion is pivotally connected to the housing through a first pivot, and the first pivot extends in a direction parallel to the axial direction.

3. The caster as claimed in claim 2, wherein the housing comprises two sidewalls and a top wall, the top wall is connected between the two sidewalls, the wheel body is pivotally connected between the two sidewalls, the braking member is disposed between the wheel body and the top wall, a resilient piece is disposed at a connection portion between the pivotally connecting portion and the connecting portion, and the resilient piece resiliently abuts against the top wall.

4. The caster of claim 1, wherein the two brake pads of the wheel body extend outwardly relative to the connecting portion, the wheel body including a crown and two shoulders, the two brake pads respectively abutting against the two shoulders when the first pedal is swung to the second position.

5. The caster of claim 1, wherein the connecting portion has an axial width less than the axial width of the pivot portion and the width of the braking portion and defines two grooves, the two brake pads integrally extending in the two grooves.

6. The caster as claimed in claim 1, wherein a notch is formed above the stopper, and a protrusion is formed on a side of the first pedal facing the caster body, the protrusion engaging the notch when the first pedal swings to the second position.

7. The caster of claim 1, wherein the first pedal is pivotally connected to the housing at a second pivot axis, the first pedal including a first treading end, the first treading end being spaced apart from the wheel body when the first pedal is in the first position, the first treading end being pivotable toward the wheel body when the first pedal is pivoted toward the second position.

8. The caster as claimed in claim 7, wherein the first pedal further comprises a top end, the second pivot is located between the first treading end and the top end, the caster further comprises a second pedal, the second pedal comprises a second treading end and a sliding end, the sliding end slidably abuts against a limit stop portion of the housing, the top end is pivotally connected to a portion of the second pedal located between the second treading end and the sliding end by a third pivot, the first treading end overlaps with the second treading end when the first pedal is located at the first position, and the top end drives the second pedal to swing so that the first treading end and the second treading end swing away from each other when the first pedal swings towards the second position.

9. The caster as claimed in claim 1, further comprising a shaft rotatably inserted into the housing, wherein an end of the shaft extending into the housing is provided with a toothed disc for rotation therewith, and an end of the brake member away from the brake portion is provided with a locking portion, wherein the locking portion does not interfere with the toothed disc when the first pedal is in the first position, and the locking portion interferes with the toothed disc when the first pedal swings to the second position.

10. The caster of claim 3, wherein the two brake pads of the wheel body extend outward relative to the connecting portion, the wheel body comprises a crown and two shoulders, and the two brake pads respectively abut against the two shoulders when the first pedal swings to the second position; the axial width of the connecting part is smaller than the axial width of the pivoting part and the width of the braking part, two grooves are formed, and the two brake pads integrally extend into the two grooves; a concave clamping groove is arranged above the braking part, a clamping protrusion is convexly arranged on one side of the first pedal facing the wheel body, and when the first pedal swings to the second position, the clamping protrusion is clamped against the clamping groove; the first pedal is pivoted to the shell through a second pivot, the first pedal comprises a first stepping end, the first stepping end is far away from the wheel body when the first pedal is located at the first position, and the first stepping end swings towards the wheel body when the first pedal swings towards the second position; the first pedal further comprises a resisting end, the second pivot is positioned between the first treading end and the resisting end, the caster further comprises a second pedal, the second pedal comprises a second treading end and a sliding end, the sliding end can be slidably propped against a limiting blocking part of the shell, the resisting end is pivoted to a part of the second pedal, which is positioned between the second treading end and the sliding end, by a third pivot, the first treading end and the second treading end are overlapped when the first pedal is positioned at the first position, and when the first pedal swings towards the second position, the resisting end drives the second pedal to swing so that the first treading end and the second treading end are far away from swinging; the brake piece is provided with a braking part, when the first pedal is positioned at the first position, the braking part does not interfere with the fluted disc, and when the first pedal swings to the second position, the braking part interferes with the fluted disc; the sides of the two side walls far away from each other are respectively provided with a sunken part, and each sunken part is detachably covered with a cover part; the two side walls are respectively provided with a lug piece in a protruding way, and the second pivot is pivoted with the two lug pieces.