WO2017190386A1

WO2017190386A1 - Caster having manual friction brake device

Info

Publication number: WO2017190386A1
Application number: PCT/CN2016/083128
Authority: WO
Inventors: 何塞安东尼奥
Original assignee: 中山市诺贝五金制品有限公司
Priority date: 2016-05-03
Filing date: 2016-05-24
Publication date: 2017-11-09
Also published as: CN205800653U

Abstract

A caster having a manual friction brake device comprises a wheel carrier (1), a left wheel body (21), a right wheel body (22), and an axle body (3). The wheel carrier (1) is provided with an axle hole (4), a connecting base (5), and arc-shaped friction plates (9) placed on two sides of the wheel carrier (1); the left and the right wheel bodies (21, 22) comprise a bearing (23) and a rim (24); the axle hole (4) in the wheel carrier (1) comprises an upper arced part (41), a middle squared part (42) and a lower arced part (43); an accommodating cavity (411) having a downward-facing opening is provided at the top of the upper arced part (41), where the diameter line is perpendicular to the horizontal plane; a guide limiting groove (6) is formed at the bottom of the lower arced part (43). The caster having a manual friction brake device further comprises a pressure spring (7) and a sliding positioning block (8). The lower end of the pressure spring (7) is embedded in a counter bore (311) and the upper end is positioned in the accommodating cavity (411); the sliding positioning block (8) has a sliding fit with the guide limiting groove (6) and is matched with a lower arced axle-body part (33) of the axle body (3); and the rim (24) is matched with the arced-shaped friction plates (9). With use of such a structure, switching between a braking function and a non-braking function can be realized simply by operating the sliding positioning block, and the caster is simple in structure and convenient to operate.

Description

Caster for setting manual friction brake device

Technical field

The utility model relates to a caster, in particular to a caster with a rotating seat or a trolley.

Background technique

At present, a caster includes a wheel frame, a left wheel body, a right wheel body and a shaft body. The wheel frame has a shaft hole and a connecting seat, the shaft body and the shaft hole are fixed, and the left and right wheel bodies and the shaft body are respectively The end is pivotally connected. The problem is that it does not have a shock absorbing function, the wheel body is easily damaged, and the service life is short.

Utility model content

The purpose of the utility model is to provide a caster with a manual friction braking device, which has the function of braking brake without load bearing, and is convenient to operate.

The utility model is realized as follows: a caster provided with a manual friction braking device, comprising a wheel frame, a left wheel body, a right wheel body and a shaft body, the wheel frame has a shaft hole, a connecting seat and a circle on both sides of the wheel frame The curved friction plate, the left and right wheel bodies comprise a bearing and a rim, wherein: the shaft hole on the wheel frame comprises an upper circular arc portion, a middle square portion and a lower circular arc portion; The diameter line is perpendicular to the top of the horizontal plane and has a lower opening receiving cavity; the bottom of the lower circular arc portion has a guiding stop groove; the fixed portion of the shaft body and the wheel frame includes an upper circular shaft body portion and a middle square shaft a body portion and a lower arc shaft body portion, the diameter line of the upper arc shaft body portion has a counterbore perpendicular to the top of the horizontal plane;

Also includes a pressure spring and a sliding positioning block.

The lower end of the pressure spring is embedded in the counterbore, the upper end is located in the accommodating cavity, the sliding positioning block is slidably engaged with the guiding stop groove, and cooperates with the lower arc shaft body of the shaft body; the rim cooperates with the circular arc friction plate.

The caster provided with the manual friction brake device is special in that: the bottom of the guide stop groove has a guide stop hole passing through the wheel frame;

The sliding positioning block includes a support portion, a seat plate portion and a manual guide stop plate.

The support portion is engaged with the lower arc shaft body portion of the shaft body, the seat plate portion is slidably engaged with the guide stop groove, and the manual guide stop plate is slidably engaged with the guide stop hole and stopped.

The caster provided with the manual friction brake device is special in that the support portion has a guide surface at an end opposite to the shaft body.

The utility model relates to a caster provided with a manual friction braking device. Since such a structure is adopted, only the sliding positioning block can be operated, and the braking function and the non-functional function can be converted, and the structure is simple and the operation is convenient.

DRAWINGS

Figure 1 is one of the cross-sectional views of the present invention.

Figure 2 is a second cross-sectional view of the present invention.

Figure 3 is an exploded perspective view of the present invention.

Figure 4 is a perspective cross-sectional view of the present invention.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings.

As shown in FIG. 1, a caster provided with a manual friction brake device includes a wheel frame 1, a left wheel body 21, a right wheel body 22 and a shaft body 3. The wheel frame 1 has a shaft hole 4, a connecting seat 5 and a wheel. An arc-shaped friction plate 9 on both sides of the frame, the left and

right wheel bodies

21, 22 include a bearing 23 and a rim 24, the shaft body 3 is hollow, and the two ends of the shaft body 3 and the bearings 23 of the left and

right wheel bodies

21, 22, respectively Cooperate and rotate with the rim;

The shaft body 3 has guide groove grooves at both ends thereof, and the center hole of the rim 24 has a guide rail 241, and the guide rail 241 and the guide card are fitted.

The shaft hole 4 on the wheel carrier 1 includes an upper circular arc portion 41, a middle square portion 42 and a lower circular arc portion 43; the diameter line of the upper circular arc portion is perpendicular to the top of the horizontal plane and has a lower opening receiving cavity 411; the bottom of the lower arc portion 43 has a guide stop groove 6;

The fixing portion of the shaft body 3 and the wheel carrier 1 includes an upper circular shaft body portion 31, a middle square shaft portion 32 and a lower circular shaft portion 33, and the diameter line of the upper circular shaft portion 31 is perpendicular to the horizontal plane. a counterbore 311 at the top;

The upper circular arc shaft portion 31 and the lower circular arc shaft portion 33 are respectively engaged with the upper circular arc portion 41 and the lower circular arc portion 43, and the middle square shaft portion 32 and the middle square portion 42 are slidably fitted to prevent the shaft from rotating.

A pressure spring 7 and a sliding positioning block 8 are also included.

The lower end of the pressure spring 7 is embedded in the counterbore 311, and the upper end is located in the accommodating cavity 411. The sliding positioning block 8 is slidably engaged with the guide stop groove 6 and cooperates with the lower arc shaft body portion 33 of the shaft body 3. The rim 24 is engaged with the circular arc-shaped friction plate 9.

The bottom of the guide stop groove 6 has a guide stop hole 61 passing through the wheel carrier 1;

The sliding positioning block 8 includes a supporting portion 81, a seat plate portion 82 and a manual guiding stop plate 83.

The support portion 81 is engaged with the lower arc shaft portion 33 of the shaft body 3, the seat plate portion 82 is slidably engaged with the guide stop groove 6, and the manual guide stop plate 83 is slidably engaged with the guide stop hole 61 and stopped. .

As shown in FIG. 1, the support portion 81 of the slide positioning block 8 supports the lower circular arc shaft portion 33 of the shaft body 3. At this time, the upper circular arc shaft body portion 31 is fitted to the upper circular arc portion 41 of the shaft hole 4, The central square shaft portion 32 is engaged with the central square portion 42 of the shaft hole, and the compression spring 7 is in a compressed state; the circular arc-shaped friction plate 9 is separated from the rim 24.

In the state of FIG. 1, the slide positioning block 8 is moved to the left, the seat plate portion 82 and the guide stop groove 6 are slid and matched with the stop position, and the middle square shaft portion 32 is moved downward relative to the middle square portion 42, the support portion 81 Separated from the shaft body 3; the pressure spring 7 The middle square shaft portion 32 is vertically slidably engaged with the middle square portion 42 of the shaft hole; the caster of the present technical solution has a braking function when not in use, that is, the circular arc friction plate 9 Fits with the rim 24.

One end of the support portion 81 opposite to the shaft body 3 has a guide surface 811.

What has been described above is only a preferred embodiment of the present invention. It should be noted that a number of modifications and variations can be made by those skilled in the art without departing from the principles of the invention.

Claims

A caster for setting a manual friction braking device, comprising a wheel frame, a left wheel body, a right wheel body and a shaft body; the wheel frame has a shaft hole, a connecting seat and an arc-shaped friction plate on both sides of the wheel frame, left and right The wheel body comprises a bearing and a rim, wherein the shaft hole on the wheel frame comprises an upper circular arc portion, a middle square portion and a lower circular arc portion; the diameter line of the upper circular arc portion is perpendicular to the top of the horizontal plane. a receiving cavity of the lower opening; a guiding stop groove at the bottom of the lower circular arc portion;

The fixing portion of the shaft body and the wheel frame comprises an upper circular shaft body portion, a middle square shaft body portion and a lower circular shaft body portion, and the diameter line of the upper circular shaft body portion has a counterbore perpendicular to the top of the horizontal plane;

Also includes a pressure spring and a sliding positioning block.

The lower end of the pressure spring is embedded in the counterbore, the upper end is located in the accommodating cavity, the sliding positioning block is slidably engaged with the guiding stop groove, and cooperates with the lower arc shaft body of the shaft body; the rim cooperates with the circular arc friction plate.
A caster provided with a manual friction brake device according to claim 1, wherein a bottom of the guide stop groove has a guide stop hole passing through the wheel carrier;

The sliding positioning block includes a support portion, a seat plate portion and a manual guide stop plate.

The support portion is engaged with the lower arc shaft body portion of the shaft body, the seat plate portion is slidably engaged with the guide stop groove, and the manual guide stop plate is slidably engaged with the guide stop hole and stopped.
A caster provided with a manual friction brake device according to claim 1, wherein a side of the support portion opposite to the shaft body has a guide surface.