CN113183683A - Pressure wheel - Google Patents

Abstract

The invention discloses a pressure wheel, which comprises a foot fork, wherein the foot fork is provided with two foot fork pieces which are arranged in a bilateral symmetry manner, a brake block is arranged on the foot fork, a guide hole which extends upwards and back to the direction of the brake block is formed in each foot fork piece, a wheel shaft is connected in each guide hole in a sliding manner, a wheel arranged between the two foot fork pieces is rotatably connected to each wheel shaft, and an elastic piece which supports against the wheel shaft and naturally keeps the wheel shaft at the lower end of each guide hole is arranged on each foot fork piece; when the wheel shaft is positioned at the lower end of the guide hole, the wheel surface of the wheel is tightly attached to the brake block; the elastic piece is a torsion spring; the elastic piece comprises a spring main body, one end of the spring main body extends to form a first torsion arm, the other end of the spring main body extends to form a second torsion arm, the second torsion arm is fixed on the foot fork piece, and the first torsion arm supports against the wheel shaft and naturally keeps the wheel shaft at the lower end of the guide hole. The pressure wheel has the characteristics of strong bearing capacity and good braking effect, and is perfect in overall function and strong in practicability.

Description

Pressure wheel

Technical Field

The present invention relates to a caster, and more particularly, it relates to a pressure wheel.

Background

When the conventional caster needs to brake, a brake pad or a brake block needs to be manually controlled to be tightly attached to a wheel surface so as to limit the rotation of the wheel; when the brake needs to be released, the brake pad or the brake block needs to be reset, and the process is complicated and easy to forget. And when external thrust is great, brake block or brake block are very easily struggled to be taken off, have the potential safety hazard, and whole effect is not good. Accordingly, the invention provides a pressure wheel.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a pressure wheel which has the characteristics of strong bearing capacity and good braking effect.

In order to solve the technical problem, the invention aims to realize that: the invention relates to a pressure wheel, which comprises a foot fork, wherein the foot fork is provided with two foot fork pieces which are arranged in a bilateral symmetry manner, a brake block is arranged on the foot fork, a guide hole which extends upwards and back to the direction of the brake block is formed in each foot fork piece, a wheel shaft is connected in each guide hole in a sliding manner, a wheel arranged between the two foot fork pieces is rotatably connected to each wheel shaft, and an elastic piece which supports against the wheel shaft and naturally keeps the wheel shaft at the lower end of each guide hole is arranged on each foot fork piece; when the wheel shaft is positioned at the lower end of the guide hole, the wheel surface of the wheel is tightly attached to the brake block.

The invention is further configured to: the elastic piece is a torsion spring; the elastic piece comprises a spring main body, one end of the spring main body extends to form a first torsion arm, the other end of the spring main body extends to form a second torsion arm, the second torsion arm is fixed on the foot fork piece, and the first torsion arm supports against the wheel shaft and naturally keeps the wheel shaft at the lower end of the guide hole.

The invention is further configured to: the foot fork piece is provided with a positioning column, and the spring main body is sleeved on the positioning column.

The invention is further configured to: the foot fork piece is provided with a jack, and the second torque arm is fixed in the jack.

In conclusion, the invention has the following beneficial effects: the pressure wheel can keep self-locking in an uncompressed natural state, so that the wheel cannot rotate, and a good braking effect is achieved; and this pressure wheel bearing capacity is strong, can match the single round and use, and the braking effect is good, and overall function is perfect, and the practicality is strong.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic diagram of a portion of the structure of the present invention;

FIG. 3 is a schematic view of a partial structure of the present invention;

FIG. 4 is a schematic view of a positioning post according to the present invention;

FIG. 5 is a schematic view of a wheel embodying the present invention;

fig. 6 is a schematic structural view of the elastic member embodying the present invention.

Detailed Description

For a better understanding of the technical solutions of the present invention, the following preferred embodiments of the present invention are described in conjunction with the specific examples, but it should be understood that the descriptions are only for the purpose of further illustrating the features and advantages of the present invention, and are not intended to limit the patent claims of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention will be further described with reference to the accompanying drawings and preferred embodiments.

Example 1

Referring to fig. 1 to 6, the pressure wheel according to the embodiment includes a foot fork 1, the foot fork 1 has two foot fork pieces 2 arranged in bilateral symmetry, a brake block 3 is arranged on the foot fork 1, a guide hole 4 extending upward and away from the brake block 3 is formed in each foot fork piece 2, a wheel shaft 5 is connected in the guide hole 4 in a sliding manner, a wheel 6 arranged between the two foot fork pieces 2 is connected to the wheel shaft 5 in a rotating manner, and an elastic member 7 which supports the wheel shaft 5 and naturally keeps the wheel shaft at the lower end of the guide hole 4 is arranged on each foot fork piece 2; when the wheel shaft 5 is positioned at the lower end of the guide hole 4, the wheel surface of the wheel 6 is tightly attached to the brake block 3.

Further, the elastic member 7 is a torsion spring; the elastic member 7 comprises a spring body 71, one end of the spring body 71 extends to form a first torsion arm 72, the other end extends to form a second torsion arm 73, the second torsion arm 73 is fixed on the pedal blade 2, and the first torsion arm 72 is abutted against the wheel axle 5 and naturally held at the lower end of the guide hole 4.

Furthermore, a positioning column 8 is arranged on the foot fork piece 2, and the spring main body 71 is sleeved on the positioning column 8.

Furthermore, the prong 2 is provided with an insertion hole 9, and the second torsion arm 73 is fixed in the insertion hole 9.

In this embodiment, when the load above the foot fork 1 is within the set range, the first torque arm 72 abuts against the wheel shaft 5, and still keeps the wheel shaft 5 at the lower end of the guide hole 4, so that the wheel surface of the wheel 6 is tightly attached to the brake block 3, and the wheel 6 is limited to rotate relative to the foot fork 1, thereby realizing the braking function;

when the load above the foot fork 1 is larger than the set range, the first torsion arm 72 still continuously supports against the wheel shaft 5, but due to the large downward force, the spring main body 71 is twisted through the force transmission on the first torsion arm 72, the wheel shaft 5 slides upwards along the guide hole 4 to slide to the upper end of the guide hole 4, so that the wheel surface of the wheel 6 is separated from the brake block 3, the brake is released, and at the moment, if the forward and backward thrust is applied, the wheel 6 can rotate relative to the foot fork 1.

In above-mentioned scheme, set up guiding hole 4 to upwards and do the extension structure to the 3 directions of brake block dorsad for when lateral thrust is great, first torsion arm 72 also can't struggle easily to shaft 5, when avoiding the loading power of fork 1 top not enough, wheel 6 takes place to roll, further promotes safety in utilization.

The addition of the positioning post 8 is used for positioning and mounting the spring main body 71 on the elastic member 7 (i.e., the torsion spring).

Wherein, the addition of the insertion hole 9 is used for positioning and installing the second torsion arm 73 on the elastic member 7 (i.e. the torsion spring).

The pressure wheel can keep self-locking in an uncompressed natural state, so that the wheel cannot rotate, and a good braking effect is achieved; and this pressure wheel bearing capacity is strong, can match the single round and use, and the braking effect is good, and overall function is perfect, and the practicality is strong.

Unless otherwise specified, in the present invention, if there is an orientation or positional relationship indicated by terms of "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., based on the orientation or positional relationship actually shown, it is only for convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are for illustrative purposes only, and should not be construed as limiting the present patent, it is possible for those skilled in the art to combine the embodiments and understand the specific meanings of the above terms according to specific situations.

Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass, for example, being fixedly connected, detachably connected, or integrally connected; the connection may be direct or indirect via an intermediate medium, and may be a communication between the two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims (4)

1. The utility model provides a pressure wheel, includes the foot fork, and the foot fork has two and is the foot fork piece that bilateral symmetry set up, its characterized in that: the foot fork is provided with a brake block, the foot fork piece is provided with a guide hole which extends upwards and back to the direction of the brake block, a wheel shaft is connected in the guide hole in a sliding manner, the wheel shaft is rotatably connected with a wheel arranged between the two foot fork pieces, and the foot fork piece is provided with an elastic piece which is used for supporting the wheel shaft and naturally keeping the wheel shaft at the lower end of the guide hole; when the wheel shaft is positioned at the lower end of the guide hole, the wheel surface of the wheel is tightly attached to the brake block.

2. The pressure wheel of claim 1, wherein: the elastic piece is a torsion spring; the elastic piece comprises a spring main body, one end of the spring main body extends to form a first torsion arm, the other end of the spring main body extends to form a second torsion arm, the second torsion arm is fixed on the foot fork piece, and the first torsion arm supports against the wheel shaft and naturally keeps the wheel shaft at the lower end of the guide hole.

3. The pressure wheel of claim 2, wherein: the foot fork piece is provided with a positioning column, and the spring main body is sleeved on the positioning column.

4. A pressure wheel according to claim 2 or 3, wherein: the foot fork piece is provided with a jack, and the second torque arm is fixed in the jack.

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