CN207106049U - It is a kind of from hard braking revolving chair leg wheel - Google Patents

Abstract

The utility model discloses a self-weight braking swivel chair caster, which comprises a wheel frame, a roller, and a wheel shaft; a wheel shaft mounting seat is arranged in the center of the inner side of the roller wheel, and an annular tooth pattern is arranged on the outer wall of the wheel shaft mounting seat; Seat, the hollow base is provided with springs and movable blocks in turn; brake blocks are provided on both sides of the hollow base, and the brake blocks are provided with protruding teeth that match the ring tooth pattern, and the brake blocks are located on the wheel shaft. The upper part of the hole, under the action of gravity, moves the wheel frame down during use, so that the annular tooth pattern and the convex teeth engage with each other, so that the roller cannot roll and acts as a brake; when the gravity is withdrawn, the wheel frame Resetting under the action of the inner spring of the hollow base, the engagement between the annular tooth pattern and the convex teeth is released, so that the roller can rotate; this caster uses its own structure to produce a braking effect, canceling the brake structural parts, making the caster compact and simple in structure, It can be miniaturized and can be used on furniture such as swivel chairs.

Description

A self-weight brake swivel chair caster

technical field

The utility model relates to a caster, in particular to a self-weight braking swivel chair caster.

Background technique

The traditional caster brake structure is usually used as an independent structure, which can be divided into single brake (only brake the wheel surface) and full brake (brake the wheel surface and the turntable at the same time). Both of these two brake structures need to be installed with a specific brake bracket, which requires multiple parts to be assembled. At the same time, the installation of the brake is complicated, which makes the traditional caster structure more complicated, and the production and assembly costs are higher. At the same time, the traditional caster The volume is relatively large, so it is not suitable for use on furniture.

Utility model content

In order to overcome the deficiencies of the prior art, the utility model provides a caster wheel with simple structure, convenient assembly, small volume and brake function.

The technical scheme that the utility model solves its technical problem adopts is:

A self-weight brake swivel chair caster, including a wheel frame, a roller, and a wheel shaft; the center of the inner side of the roller is provided with a shaft mounting seat, the wheel shaft mounting seat is provided with a wheel shaft mounting hole, and the outer wall of the wheel shaft mounting seat is provided with annular tooth patterns; The wheel frame is provided with a bottom plate mounting seat, and the bottom plate mounting seat is opened at the top of the wheel frame; a hollow base is provided next to the bottom plate mounting seat, and a spring and a movable block are arranged in the hollow base in turn. There are through holes on the movable block; axle holes matching the through holes are arranged on both sides of the hollow base, and the axle holes are oval; brake blocks are arranged on both sides of the hollow base, and the brake blocks Convex teeth cooperating with the annular tooth pattern are arranged on the top, and the brake block is located on the upper part of the axle hole.

As a preferred option, two sections of grooves are respectively provided on both sides of the axle.

As a preferred item, the groove cooperates with the annular protruding ring in the mounting hole of the wheel axle.

As a preferred item, the protruding teeth include high teeth arranged at both ends of the brake block, and low teeth located between the high teeth; a slot is provided between the low teeth.

The beneficial effect of the utility model is: during the use of the caster, under the action of gravity, the wheel frame moves downward, so that the annular tooth lines and the convex teeth are interlocked with each other, so that the roller cannot roll and plays the role of a brake; When the gravity is withdrawn, the wheel frame is reset under the action of the inner spring of the hollow base, and the engagement between the annular tooth pattern and the convex tooth is released, so that the roller can rotate; this caster uses its own structure to produce the effect of braking resistance, and the braking structural parts are cancelled. , so that the structure of the casters is compact and simple, and can be miniaturized, and can be used on furniture such as swivel chairs.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is the three-dimensional schematic view of the utility model;

Fig. 2 is the enlarged schematic view of the brake shoe of the present utility model;

Fig. 3 is a schematic view of the roller of the present invention.

Detailed ways

Referring to Figures 1 to 3, a self-weight braking swivel chair caster includes a wheel frame 1, a roller 2, and a wheel shaft 3; the center of the inner side of the roller 2 is provided with a wheel shaft mounting seat 21, and the wheel shaft mounting seat 21 is provided with a wheel shaft mounting hole 22. Install the wheel shaft 3 through the wheel shaft mounting hole 22, and connect the rollers 2 to each other. The outer wall of the wheel shaft mounting seat 21 is provided with annular tooth patterns 23; the wheel frame 1 is provided with a bottom plate mounting seat 11, and the bottom plate mounting seat 11 A hole is opened at the top of the wheel frame 1, and the bottom plate is installed through the bottom plate mounting seat 11; a hollow base 12 is provided beside the bottom plate mounting seat 11, and a spring 121, a movable block 122, and a movable block 122 are arranged in the hollow base 12 in turn. Under the action of the spring 121, the displacement can be done up and down in the hollow base 12. The movable block 122 is provided with a through hole A12; the two sides of the hollow base 12 are provided with axle holes 123 that match the through hole A12. The axle hole 123 is oval, and the axle 3 passes through the axle mounting hole 22 and the through hole A12, so that the roller 2 is mounted on the wheel frame 1. In order to make the axle 3 move up and down, the axle mounting hole 22 is designed as oval; the two sides of the hollow base 12 are provided with brake blocks 124, and the brake blocks 124 are provided with protruding teeth B12 that cooperate with the annular tooth pattern 23. The brake blocks 124 are located on the upper part of the axle hole 123. Under the action of objects, the roller 2 moves up relative to the wheel frame 1, so that the annular tooth pattern 23 and the convex tooth B12 contact and engage with each other, so that the roller 2 cannot rotate, and a braking effect is produced.

Because the roller 2 is an important part in producing the brake resistance effect, it must be closely connected with the wheel shaft 3, so two sections of grooves 31 are respectively provided on both sides of the wheel shaft 3, and the wheel shaft mounting hole 22 is provided with a The groove 31 fits with the annular bead 221 .

In order to further improve the engagement between the convex tooth B12 and the annular tooth pattern 23, the convex tooth B12 includes high teeth 201 arranged at both ends of the brake block 124, and short teeth 202 located between the high teeth 201; the short teeth 202 are provided with card slots 203, the high teeth 201 block the rotation of the annular tooth pattern 23 through the engagement of the slot 203 and the annular tooth pattern 23, and the product that the roller 2 does not rotate when there is a heavy object applied, and the roller 2 rotates when there is no heavy object.

According to the above principles, the utility model can also make appropriate changes and modifications to the above embodiments. Therefore, the utility model is not limited to the specific implementation manners disclosed and described above, and some modifications and changes to the utility model should also fall within the scope of protection of the claims of the utility model.

Claims (4)

1. It is 1. a kind of from hard braking revolving chair leg wheel, including wheel carrier (1), roller (2), wheel shaft (3)；Characterized in that, the roller (2) Inner central is provided with wheel shaft mounting seat (21), and the wheel shaft mounting seat (21) is provided with wheel shaft mounting hole (22), the wheel shaft peace Dress seat (21) outer wall is provided with annular groove (23)；The wheel carrier (1) is provided with bottom plate mounting seat (11), the bottom plate mounting seat (11) in wheel carrier (1) top perforate；Hollow base (12) is provided with by the bottom plate mounting seat (11), the hollow base (12) is interior Spring (121), movable block (122) are sequentially provided with, through hole (A12) is provided with the movable block (122)；The hollow base (12) Both sides are provided with the axle hole (123) coordinated with through hole (A12), and the axle hole (123) is oval；The hollow base (12) Both sides are provided with brake shoes (124), and the brake shoes (124) is provided with the double wedge (B12) coordinated with annular groove (23), the brake Car block (124) is located at axle hole (123) top.
2. It is 2. according to claim 1 a kind of from hard braking revolving chair leg wheel, it is characterised in that wheel shaft (3) the both sides difference Provided with two sections of grooves (31).
3. It is 3. according to claim 2 a kind of from hard braking revolving chair leg wheel, it is characterised in that the groove (31) is pacified with wheel shaft The annular bead (221) filled in hole (22) coordinates.
4. It is 4. according to claim 1 a kind of from hard braking revolving chair leg wheel, it is characterised in that the double wedge (B12) includes setting High tooth (201) in brake shoes (124) both ends, the short tooth (202) between high tooth (201)；Card is provided between the short tooth (202) Groove (203).