JP5236416B2 - Caster with brake - Google Patents

Description

  The present invention belongs to the technical field of casters with brakes used in handcarts and the like, and more specifically, with brakes configured to obtain a braking force by pressing the lower ends of brake pieces against the rim inner peripheral surfaces on both sides of a wheel. Regarding casters.

The casters with brakes according to Patent Documents 1 to 3 commonly have a configuration in which a braking force is obtained by pressing a brake member against a tire surface of a wheel.
The caster with a brake according to Patent Document 4 is configured to obtain a braking force by pressing a brake member against a rim of a wheel.

Japanese Patent No. 2759599 Japanese Patent Laid-Open No. 11-59113 Japanese Patent Laid-Open No. 11-91305 JP-T-2004-508236

Since the casters with brakes disclosed in Patent Documents 1 to 3 are configured to obtain a braking force by friction between the tire surface of the wheel and the brake member, the wear degree of the tire of the wheel is based only on the running of the normal caster. There is a problem that the brake performance rapidly decreases as the tire wear level is much higher than the tire wear, and as the tire thickness decreases, the brake shoe presses against the tire surface quickly. Along with this, there is a problem that the frequency of replacement of worn tires (or wheels) increases, which is uneconomical.
Also, if the road surface is wet or dirt or sand adheres to the tire surface and the tire surface is slippery, the brake shoe will be slippery and the brake performance will be reduced, so it is susceptible to road surface conditions and stable. There was a problem that it was difficult to obtain the braking force.

On the other hand, since the caster with a brake disclosed in Patent Document 4 is configured to obtain a braking force by pressing the brake member against the rims on both sides of the wheel, the brake member is not involved in the wear of the wheel tire. Therefore, the above problem does not occur.
However, as shown in FIGS. 1 to 4, the caster with a brake has an elongate ultrathin spring (30) curved in a convex shape provided between the left and right brake levers (241, 24r). Therefore, the spring (30) is likely to be distorted or fatigued over time, and the both sides of the wheel (18) are pressed against each other by the brake levers (21l, 24r) with equal force from both the left and right sides for braking. It is very difficult to maintain the performance. There is also a problem that the mechanism is complicated and the cost is increased.

An object of the present invention is to provide a braking force by pressing a brake piece of a brake member against the inner peripheral surfaces of rims on both sides of a wheel so that the braking operation is not involved in the wheel tire wear at all. It is an object of the present invention to provide a caster with a brake that can reduce the degree of wear as much as possible and that is not adversely affected by road surface conditions.
In addition, the brake piece presses the rim inner peripheral surfaces on both sides with equal force from both sides and brakes with a simple structure that can be reliably and permanently maintained, making it economical and durable. Provide casters with brakes.

As a means for solving the above-described problems of the prior art, a caster with a brake according to the invention described in claim 1 is:
In a caster in which a wheel 4 is rotatably supported at a lower portion of a substantially downward U-shaped wheel support leg 1,
The wheel support leg 1 has an upper portion in the downward U-shape and is arranged so as to sandwich the wheel 4 and is substantially downwardly provided with a pair of brake pieces 30, 30 that press against the rim inner peripheral surfaces 42, 42 of the wheel 4. A U-shaped brake member 3 is rotatably supported on the wheel support leg 1 by a horizontal shaft 32;
The brake member 3 and the wheel support leg 1 are connected by an elastic body 5, and the elastic body 5 causes the lower ends of the brake pieces 30 and 30 to rotate away from the rims 42 and 42 of the wheel 4. Have received
One end of the string-like body 7 is fixed to the brake member 3, and when the string-like body 7 is pulled, the lower ends of the brake pieces 30, 30 are pressed against the rims 42, 42 on both sides of the wheel 4 to act as a brake. It is characterized by being configured.

The caster with a brake according to the invention described in claim 2 is:
In a caster in which a wheel 4 is rotatably supported at a lower portion of a substantially downward U-shaped wheel support leg 1,
The wheel support leg 1 has an upper portion in the downward U-shape and is arranged so as to sandwich the wheel 4 and is substantially downwardly provided with a pair of brake pieces 30, 30 that press against the rim inner peripheral surfaces 42, 42 of the wheel 4. A U-shaped brake member 3 is rotatably supported on the wheel support leg 1 by a horizontal shaft 32;
The brake member 3 and the wheel support leg 1 are connected by an elastic body 5, and the elastic body 5 rotates the lower end portions of the brake pieces 30, 30 in a direction in which they press against the rims 42, 42 of the wheel 4. Have received power,
One end of the string-like body 7 is fixed to the brake member 3, and the brake is applied by pulling the string-like body 7 to separate the lower ends of the brake pieces 30, 30 pressed against the rims 42, 42 on both sides of the wheel 4. It is the structure which cancels | releases, It is characterized by the above-mentioned.

A caster with a brake according to the invention described in claim 3 is:
In a caster in which a wheel 4 is rotatably supported at a lower portion of a substantially downward U-shaped wheel support leg 1,
A pair of support portions 11, 11 projecting vertically downward are provided on the lower surface of the ceiling wall of the wheel support leg 1,
It is arranged to sandwich the wheel 4 between the support parts 11 on both sides, and has a substantially U-shape downwardly provided with a pair of brake pieces 30, 30 that press against the rim inner peripheral surfaces 42, 42 of the wheel 4. The brake member 3 is rotatably supported by the support portions 11 and 11 on both sides by the horizontal shaft 32,
The brake member 3 and the wheel support leg 1 are connected by an elastic body 5, and the elastic body 5 causes the lower ends of the brake pieces 30 and 30 to rotate away from the rims 42 and 42 of the wheel 4. Have received
One end of the string-like body 7 is fixed to the brake member 3, and when the string-like body 7 is pulled, the lower ends of the brake pieces 30, 30 are brought into pressure contact with the rims 42, 42 on both sides of the wheel 4 to operate the brake. It is characterized by being configured.

The caster with a brake according to the invention described in claim 4 is:
In a caster in which a wheel 4 is rotatably supported at a lower portion of a substantially downward U-shaped wheel support leg 1,
A pair of support portions 11, 11 projecting vertically downward are provided on the lower surface of the ceiling wall of the wheel support leg 1,
It is arranged to sandwich the wheel 4 between the support parts 11 on both sides, and has a substantially U-shape downwardly provided with a pair of brake pieces 30, 30 that press against the rim inner peripheral surfaces 42, 42 of the wheel 4. The brake member 3 is rotatably supported by the support portions 11 and 11 on both sides by the horizontal shaft 32,
The brake member 3 and the wheel support leg 1 are connected by an elastic body 5, and the elastic body 5 rotates the lower end portions of the brake pieces 30, 30 in a direction in which they press against the rims 42, 42 of the wheel 4. Have received power,
One end of the string-like body 7 is fixed to the brake member 3, and the brake is applied by pulling the string-like body 7 to separate the lower ends of the brake pieces 30, 30 pressed against the rims 42, 42 on both sides of the wheel 4. It is the structure which cancels | releases, It is characterized by the above-mentioned.

The invention according to claim 5 is the caster with a brake according to claim 1 or 3,
The pedal 9 is attached to the pedal attachment portion 8 provided on the wheel support leg 1, and the other end of the string-like body 7 whose one end is fixed to the brake member 3 is fixed to the pedal 9.
When the pedal 9 is depressed, the string-like body 7 is pulled to tilt the lower ends of the brake pieces 30, 30 toward the rims 42, 42, and the lower ends of the brake pieces 30, 30 are moved to the rims 42 on both sides of the wheel 4. 42, the brake works by being brought into pressure contact with the inner peripheral surface.

According to the caster with a brake according to the present invention, since the lower end portions of the brake pieces 30 and 30 are pressed against the rim inner peripheral surfaces 42 and 42 on both sides of the wheel 4 to obtain a braking force, the braking action is applied to the tire of the wheel 4. 40 is not involved at all, and the degree of wear of the tire 40 of the wheel 4 can be reduced as much as possible, and is not affected by the road surface condition.
In addition, the braking operation of the brake pieces 30 and 30 with a simple structure, reliably and permanently is performed by pressing the rim inner peripheral surfaces 42 and 42 on both sides of the wheel 4 from the left and right sides with equal force. Since it is a structure that can be maintained, it is easy to use and is economical and durable.
Since the caster with a brake according to claims 1 and 3 is configured to obtain a braking force and stop when the brake operation mechanism 6 (brake lever) is operated in a non-braking state in a normal state, for example, transport work on a flat road surface The present invention can be suitably applied to a hand cart used for the vehicle.
On the other hand, since the caster with a brake according to claims 2 and 4 is in a braking state in a normal state, when the brake operation mechanism 6 (brake lever) is operated, the brake is released, and the carriage and the like can run. The present invention can be suitably applied to a hand cart used for carrying work on an inclined road surface that needs to be braked.

  The wheel support leg 1 is arranged in a downward U-shape with the wheel 4 sandwiched therebetween, and is provided with a pair of brake pieces 30, 30 that press against the rim inner peripheral surfaces 42, 42 of the wheel 4. A brake member 3 having a shape is rotatably supported on the wheel support leg 1 by a horizontal shaft 32. The brake member 3 and the wheel support leg 1 are connected by the elastic body 5, and the elastic body 5 receives an acting force that rotates the lower ends of the brake pieces 30, 30 in a direction away from the rims 42, 42 of the wheel 4. . One end of the string-like body 7 is fixed to the brake member 3, and when the string-like body 7 is pulled, the lower ends of the brake pieces 30, 30 are pressed against the rims 42, 42 on both sides of the wheel 4 to act as a brake.

  Alternatively, the wheel support leg 1 is arranged so that the wheel 4 is sandwiched in the upper part of the downward U-shape of the wheel support leg 1, and the pair of brake pieces 30, 30 that press against the rim inner peripheral surfaces 42, 42 of the wheel 4 are provided substantially downward. A U-shaped brake member 3 is rotatably supported on the wheel support leg 1 by a horizontal shaft 32. The brake member 3 and the wheel support leg 1 are connected by an elastic body 5, and the elastic body 5 exerts an acting force that rotates the lower end portions of the brake pieces 30, 30 in a direction in pressure contact with the rims 42, 42 of the wheel 4. is recieving. One end of the string-like body 7 is fixed to the brake member 3, and the brake is released by pulling the string-like body 7 to separate the lower ends of the brake pieces 30, 30 pressed against the rims 42, 42 on both sides of the wheel 4. To do.

The present invention will be described below based on the illustrated embodiments.
1 and 2 show Embodiment 1 of a caster with a brake according to the first aspect of the present invention. The caster with a brake is configured such that a wheel 4 is rotatably supported by an axle 41 at a lower portion of a substantially U-shaped wheel support leg 1 (see FIG. 2). In addition, if the brake mechanism of this invention is a structure provided with the U-shaped wheel support leg 1 in the downward direction, a fixed caster (FIG. 1, FIG. 3, FIG. 5, FIG. 6 and FIG. 8) or a free caster (FIG. 4). ) And can be implemented in common.

As shown in FIG. 2, the caster with a brake according to the first embodiment includes a pair of brake pieces 30 and 30 arranged to sandwich both sides of the tire portion 40 of the wheel 4, and the rim inner peripheral surfaces on both sides of the wheel 4. A fixed dimension (about 2 to 3 cm) such that the downward substantially U-shaped brake member 3 that press-contacts 42, 42 does not interfere with the ceiling wall 10 in the downward U-shaped frame of the wheel support leg 1. ) Installed in a lowered position. The brake member 3 is a horizontal shaft that horizontally penetrates the brake pieces 30 and 30 on both sides of the brake member 3 and is fixed at both ends to the wheel support leg 1 at a position above the tire upper end of the wheel 4. 32 is supported inside the wheel support leg 1 so as to be pivotable in a pendulum manner. As shown in FIG. 1, by providing the center of the horizontal shaft 32 on the center of the axle 41, the brake member 3 located at the top of the wheel 4 is rotated in either direction (left and right in the illustrated example). However, the brake shoes 31 and 31 are configured to be easily pressed against the rims 42 and 42.
The brake pieces 30, 30 are provided with brake shoes 31, 31 at both lower ends that are pressed against rims 42, 42 on both sides of the wheel 4 to be described later and act as a brake. The brake shoes 31 and 31 are made of an elastomer having rubber elasticity in order to increase the frictional force with the rim 42 of the wheel 4 and to ensure the braking force.
The horizontal shaft 32 is provided with sleeves 33 for positioning the brake member 3 at the central portion between both outer surfaces of the brake member 3 and the inner surface of the wheel support leg 1. Hereinafter, Examples 2 to 4 have the same technical idea.

A rear portion of one brake piece 30 and an elastic body mounting plate 2 protruding vertically downward from the lower surface of the ceiling wall 10 of the wheel support leg 1 are connected by an elastic body 5 (a tension spring in the illustrated example), and the elastic body 5, the brake shoes 31, 31 receive an acting force that rotates in a direction away from the rims 42, 42 of the wheel 4.
In addition, you may implement by the structure which connected the brake pieces 30 and 30 and the elastic body attaching plate 2 of both sides with the two elastic bodies 5, respectively. The portion where the elastic body 5 is provided is not limited to the illustrated example. In short, each brake shoe 31, 31 gives an acting force to rotate away from the rims 42, 42 of the wheel 4. Any configuration can be used.

One end of a brake wire as a string-like body 7 is firmly fixed to the ceiling wall of the brake member 3 by, for example, screwing. For example, as shown in FIG. 9, the other end of the string-like body 7 is connected to a brake lever 6 provided on the handle of the hand cart.
The position at which one end of the string-like body 7 is fixed to the brake member 3 is not limited to the position of the illustrated embodiment. For example, the string member 7 is fixed to the rear side surface of the brake member 3 or the brake piece 30. You may implement by a structure.

With the above configuration, when the operator pulls the brake wire 7 (string-like body) by gripping the brake lever 6, the brake pieces 30, 30 tilt toward the rims 42, 42 of the wheel 4. Each brake shoe 31 is pressed against the rim inner peripheral surface 42 on both sides of the wheel 4 to act as a brake.
On the other hand, when the gripping brake lever 6 is released, the brake shoes 31, 31 that are in pressure contact with the rim inner peripheral surfaces 42, 42 on both sides of the wheel 4 are moved by the pulling action of the elastic body 5. The brake is released away from 42.

That is, the caster with a brake according to the first embodiment has a configuration in which the brake shoes 31 and 31 of the brake pieces 30 and 30 are pressed against the rim inner peripheral surfaces 42 and 42 on both sides of the wheel 4 to obtain a braking force. 4 is not involved at all in the wear of the tire 40, the wear degree of the tire 40 of the wheel 4 can be reduced as much as possible, and is not affected by the road surface condition.
In addition, since the brake shoes 31, 31 are pressed against the rim inner peripheral surfaces 42, 42 on both sides of the wheel 4 with equal force from the left and right sides, the braking performance is reliable with a simple structure, and It can be maintained permanently, is easy to use, and is economical and durable.

As shown in FIG. 3, the rear portion (left side of the drawing) of the wheel support leg 1, and the protrusion 12 provided so as to protrude vertically downward from the lower surface of the ceiling wall 10 of the wheel support leg 1, Alternatively, the pedal mounting portion 8 may be mounted so as to protrude in the direction, and the pedal mounting portion 8 may be mounted with a pedal 9 that is rotatably supported at one end. In this case, the other end of the string-like body 7 whose one end is fixed to the brake member 3 is connected to the folding pedal 9 via the rotary shaft 80 provided in the pedal mounting portion 8, for example, the brake wire 7 (string-like body). The tip is ball-fastened, and the brake wire 7 (string-like body) is fastened to the through hole having a smaller diameter than the ball of the pedal 9.
Thus, when an operator steps on the pedal 9 with his / her foot, the operator pulls the string-like body 7 and tilts the brake shoes 31, 31 of the brake pieces 30, 30 toward the rims 42, 42, 31 can be brought into pressure contact with the rim inner peripheral surfaces 42, 42 on both sides of the wheel 4 to operate the brake and stop the rotation of the caster.

  However, as shown in FIG. 4, the elastic body mounting plate 2 may be provided at the rear portion (left side of the drawing) of the wheel support leg 1 and the pedal mounting portion 8 may be attached to the elastic body mounting plate 2. .

FIG. 5 shows Example 2 of a caster with a brake according to the second aspect of the present invention.
The caster with a brake according to the second embodiment is configured in a braking state in a normal state, and has a configuration in which a brake action works when the brake operation mechanism 6 (brake lever) is operated. Compared with the caster with a brake according to the first embodiment described above. The purpose of operating the brake operation mechanism 6 to make it the non-braking state is different. Since most of the casters with brakes are the same as the casters with brakes of the first embodiment, the description is cited and the detailed description is omitted.

The difference from the caster with brake of the first embodiment is that one brake piece 30 and the elastic body mounting plate 2 provided on the wheel support leg 1 are connected by an elastic body 5 (compression spring in the illustrated example). That is, the elastic shoe 5 receives the acting force that the brake shoes 31, 31 are rotated in the direction in which they are pressed against the rim inner peripheral surfaces 42, 42 of the wheel 4.
Therefore, when an operator performs an operation of grasping the brake lever 6 and pulls the brake wire 7 (string-like body), the brake pieces 30 and 30 are inclined inward, and the brake shoes 31 are moved to the rims on both sides of the wheel 4. The brake is released by pulling away from the inner peripheral surfaces 42, 42.
On the other hand, when the gripping brake lever 6 is released, the brake shoes 31, 31 separated from the rim inner peripheral surfaces 42, 42 on both sides of the wheel 4 are moved to the rim inner peripheral surfaces 42, 42 by the compression action of the elastic body 5. The brake action works by being pressed.

6 and 7 show a third embodiment of the caster with brake according to the third aspect of the present invention.
The caster with brake according to the third embodiment is configured to be able to travel by operating the brake operation mechanism 6 (brake lever) in a non-braking state at normal times. The caster with brake and the brake operation mechanism 6 according to the first embodiment described above. The purpose of operating is to bring it into a braking state. In addition, the content which is common with the caster with a brake of the said Example 1 uses the description, and abbreviate | omits detailed description.

In the caster with a brake, a pair of support portions 11 and 11 projecting vertically downward from the lower surface of the ceiling wall 10 of the wheel support leg 1 are in front of the wheel support leg 1 (right side in the drawing), and a pair of brake pieces. 30 and 30 are provided at positions where the wheels 4 are sandwiched. However, the said support parts 11 and 11 can also be implemented by the structure provided in the back (left side of drawing) of the wheel support leg 1, as shown in FIG.
A pair of brake pieces 30, 30 that are arranged to sandwich both sides of the side surface of the wheel 4 and press against the rim inner peripheral surfaces 42, 42 of the wheel 4, and the substantially U-shaped brake member 3 downwards, Between the support parts 11 and 11 on both sides, it is installed at a position lowered so as not to cause interference with the ceiling wall 10. The brake member 3 has an arrangement in which the upper position of the tire 40 of the wheel 4 is horizontally deviated. The brake member 3 horizontally penetrates the brake pieces 30 and 30 on both sides of the brake member 3 and extends to the support portions 11 and 11. A horizontal shaft 32 fixed at both ends is supported between the support portions 11 and 11 so as to be rotatable in a pendulum manner.

  The rear part of the brake piece 30 and the elastic body mounting plate 2 protruding vertically downward from the lower surface of the ceiling wall 10 of the wheel support leg 1 are connected by an elastic body 5 (a tension spring in the illustrated example). The brake shoes 31, 31 of the brake piece 30 receive an acting force that rotates in a direction away from the rims 42, 42 of the wheel 4.

  One end of a brake wire (string-like body) 7 is firmly fixed to the lower surface of the ceiling wall of the brake member 3 by, for example, screwing. For example, as shown in FIG. 9, the other end of the brake wire 7 is connected to a brake lever 6 provided on a handle of the handcart.

  As shown in FIGS. 3 and 4, the caster with brake according to the third embodiment also has a pedal 9 attached to a pedal attachment portion 8 provided so as to protrude outward from the rear portion of the wheel support leg 1, and one end of a brake member. By fixing the other end of the string-like body 7 fixed to 3 to the pedal 9, the operator can brake with his / her foot to stop the caster.

FIG. 8 shows a fourth embodiment of the caster with brake according to the fourth aspect of the present invention.
The caster with brake according to the fourth embodiment is configured to be able to travel when the brake operation mechanism 6 (brake lever) is operated in a braking state in a normal state. The caster with brake and the brake operation mechanism 6 according to the second embodiment described above. A common purpose is to operate in a non-braking state. In addition, the content which is common with the caster with a brake of the said Examples 1-3 uses the description, and abbreviate | omits detailed description.

In the caster with brake, a pair of support portions 11 and 11 projecting vertically downward from the lower surface of the ceiling wall 10 of the wheel support leg 1 are behind the wheel support leg 1, and the pair of brake pieces 30 and 30 are wheels. 4 is provided at a position where 4 is sandwiched. However, the said support parts 11 and 11 can also be implemented by the structure provided in the front (right side of drawing) of the wheel support leg 1, as shown in FIG.
A substantially downward U-shaped brake member 3 having a pair of brake pieces 30, 30 arranged to sandwich both sides of the side surface of the wheel 4 interferes with the ceiling wall 10 between the support portions 11, 11 on both sides. It is installed in a position that is lowered so as not to wake up. The brake member 3 has an arrangement in which the upper position of the tire 40 of the wheel 4 is horizontally biased, horizontally penetrates the brake pieces 30 and 30 on both sides of the brake member 3, and both ends of the support portions 11 and 11 are connected to both ends. Is supported in a pendulum-like manner between the support portions 11 and 11 by a horizontal shaft 32 fixed thereto.

The brake piece 30 and the elastic body mounting plate 2 provided on the wheel support leg 1 are connected by the elastic body 5, and the brake shoes 31, 31 are pressed against the rim inner peripheral surfaces 42, 42 of the wheel 4 by the elastic body 5. It receives an acting force that rotates in the direction of
One end of a brake wire (string-like body) 7 is firmly fixed to the lower surface of the ceiling wall of the brake member 3 by, for example, screwing. For example, as shown in FIG. 9, the other end of the brake wire 7 is connected to a brake lever 6 provided on a handle of the handcart.

  Although the present invention has been described above with the illustrated embodiment, the present invention is not limited to the embodiment. It should be noted that the present invention includes design changes and application modifications made by those skilled in the art as needed without departing from the scope and spirit of the present invention.

It is a front view which shows the caster concerning Example 1 partially broken. It is A arrow directional view of FIG. It is a front view which shows the caster which has a pedal partly broken. It is a front view which partially fractures and shows the different structure of the caster which has a pedal. It is a front view which shows the caster concerning Example 2 partially broken. It is a front view which shows the caster concerning Example 3 partially broken. It is a B arrow view of FIG. It is a front view which shows the caster concerning Example 4 partly broken. It is the perspective view which showed roughly the whole structure of the caster concerning this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wheel support leg 3 Brake member 30 Brake piece 32 Horizontal axis 4 Wheel 42 Rim 5 Elastic body 7 String-like body 8 Pedal attachment part 9 Pedal 11 Support part

Claims (5)

In the caster in which the wheel is rotatably supported at the lower part of the substantially U-shaped wheel support leg,
A downwardly substantially U-shaped brake member having a pair of brake pieces pressed against the inner peripheral surface of the rim of the wheel is horizontally disposed at an upper portion in the downward U-shaped shape of the wheel support leg. It is pivotally supported on the wheel support leg by the shaft,
The brake member and the wheel support leg are connected by an elastic body, and the elastic body receives an acting force to rotate the lower end portion of the brake piece away from the rim of the wheel,
One end of a string-like body is fixed to the brake member, and when the string-like body is pulled, the lower end portion of the brake piece is pressed against the rims on both sides of the wheel to act as a brake. , Casters with brakes. In the caster in which the wheel is rotatably supported at the lower part of the substantially U-shaped wheel support leg,
A downwardly substantially U-shaped brake member having a pair of brake pieces pressed against the inner peripheral surface of the rim of the wheel is horizontally disposed at an upper portion in the downward U-shaped shape of the wheel support leg. It is pivotally supported on the wheel support leg by the shaft,
The brake member and the wheel support leg are connected by an elastic body, and the elastic body receives an acting force that rotates the lower end portion of the brake piece in a direction in pressure contact with the rim of the wheel,
One end of the string-like body is fixed to the brake member, and the brake is released by pulling the string-like body and pulling off the lower ends of the brake pieces pressed against the rims on both sides of the wheel. A caster with a brake. In the caster in which the wheel is rotatably supported at the lower part of the substantially U-shaped wheel support leg,
A pair of support portions protruding vertically downward are provided on the lower surface of the ceiling wall of the wheel support leg,
A downwardly substantially U-shaped brake member having a pair of brake pieces pressed against the inner peripheral surface of the rim of the wheel is disposed between the support parts on both sides, and the support parts on both sides of the horizontal axis. Is supported rotatably,
The brake member and the wheel support leg are connected by an elastic body, and the elastic body receives an acting force to rotate the lower end portion of the brake piece away from the rim of the wheel,
One end of a string-like body is fixed to the brake member, and when the string-like body is pulled, the lower end portion of the brake piece is pressed against the rims on both sides of the wheel to act as a brake. , Casters with brakes. In the caster in which the wheel is rotatably supported at the lower part of the substantially U-shaped wheel support leg,
A pair of support portions protruding vertically downward are provided on the lower surface of the ceiling wall of the wheel support leg,
A downwardly substantially U-shaped brake member having a pair of brake pieces pressed against the inner peripheral surface of the rim of the wheel is disposed between the support parts on both sides, and the support parts on both sides of the horizontal axis. Is supported rotatably,
The brake member and the wheel support leg are connected by an elastic body, and the elastic body receives an acting force that rotates the lower end portion of the brake piece in a direction in pressure contact with the rim of the wheel,
One end of the string-like body is fixed to the brake member, and the brake is released by pulling the string-like body and pulling off the lower ends of the brake pieces pressed against the rims on both sides of the wheel. A caster with a brake. The pedal is attached to the pedal mounting portion provided on the wheel support leg, and the other end of the string-like body whose one end is fixed to the brake member is fixed to the pedal,
When the pedal is depressed, the brake is operated by pulling the string-like body to incline the brake piece toward the rim and press the lower end of the brake piece against the inner peripheral surface of the rim on both sides of the wheel. The caster with a brake according to claim 1 or 3, wherein the caster has a brake.

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