JP5578529B2 - Wheel structure with braking mechanism - Google Patents

Description

  The present invention relates to a wheel structure with a braking mechanism, and more particularly to a wheel structure with a braking mechanism that can be coupled to the bottom of medical equipment such as a baby chaer, a hospital bed, a wheelchair, a rack or a cabinet. It is.

  Most conventional wheel structures, particularly casters, have a structure in which each wheel structure needs to be stepped on and controlled when used. Therefore, when four wheels are provided in the pusher wheel, it is necessary to fix each wheel and position the pusher wheel, which takes a lot of time and is inefficient.

  Under such circumstances, there have been many proposals and implementations for casters having a control mechanism. For example, Japanese Patent Laid-Open No. 2011-6045 (hereinafter referred to as “Patent Document 1”) discloses a wheel mounting in which a wheel is mounted as a caster having a brake mechanism that can obtain a control force according to a pulling force of a brake lever. For pressing the outer peripheral portion of the wheel and the pin supported by the wheel mounting member, the inner peripheral surface rear end portion and the inner peripheral surface rear end portion that are pressed by the outer peripheral portion of the wheel and brake the wheel. A structure including a wire fixing portion to which a force is applied, and a braking member in which the rear end portion of the inner peripheral surface, the pin, and the wire fixing portion are arranged in this order along the rotation direction of the wheel, is described. The long hole that supports the pin is structured such that when the rear end of the inner peripheral surface comes into contact with the outer peripheral part of the wheel, the pin is formed to be movable in the direction away from the wheel axle inside the long hole. ing. However, since this configuration is still complicated, there is room for improvement in order to stop the wheel quickly and reliably, and a configuration capable of simultaneously braking a plurality of wheel structures is not disclosed.

  Japanese Patent Application Laid-Open No. 9-272302 (hereinafter referred to as “Patent Document 2”) describes a control mechanism that simultaneously locks the turning and rotation of a two-wheel caster having a pair of wheels.

  However, the structure described in Patent Document 2 is as complex as described above, and a pair of wheels are supported on the caster body via an axle, and a plurality of wheel structures are controlled by a single braking operation. There is no disclosure about the structure.

  In such a twin-wheel caster braking device, when the operation communication pin is lowered by the operation of the operation lever, the lock member fixed to the operation communication pin is integrally lowered to stop the turning of the caster body, and It is configured to stop the rotation.

Therefore, it is based on a simple configuration for braking the wheels attached to the bottom surface of the transporting mobile body, and braking that can reliably stop the wheels with a simple operation by a single braking operation on a plurality of wheel structures. Development of a wheel structure with a mechanism has been desired.
JP 2011-6045 A JP-A-9-272302

  The subject of this invention is providing the wheel structure with a practical brake mechanism which can control a several wheel at once while controlling and positioning a brake with the brake device attached externally.

  Therefore, as a result of intensive studies to solve the above-described problems of the present invention, the present inventors combined a specific control means and a brake means and used an externally added braking device as will be described later. Thus, the inventors have focused on the fact that the wheel can be stopped quickly and reliably with a simple structure, and have come to the present invention based on such knowledge.

Thus, in order to solve the above problems, according to the present invention, there is provided a wheel structure with a braking mechanism including a control means, a brake means, and a wheel,
The control means includes a fixed block, a control space, a control block, a pivot end, a slide guide surface, a channel, a slide block, and a convex portion, and the control space is recessed in the fixed block, and the control space The control block is accommodated, and the pivot end is provided on a side portion of the control block, the control block is driven by a braking device, and the slide guide surface and the channel are placed on the control block. The slide guide surface is a surface formed on the control block by inclining at a predetermined angle, has the slide block, and the bottom surface of the slide block corresponds to the slide guide surface. A convex portion is provided, and the slide block is moved on the control block, and the slide block is pivoted on the slide block. There is pierced, the pivot is inserted in said channel,
The brake means includes a housing, a top cover, a shaft sleeve, a pivot shaft, a brake block, and a stopper. The top cover is provided on the housing, and the shaft sleeve is provided through the top cover. The pivot shaft penetrates the shaft sleeve, the pivot shaft penetrates the slide block, the channel and the fixed block of the control means, and the shaft sleeve penetrates the fixed block, The brake block is screwed at the end of the pivot, the brake block is provided with the stopper at one end, and the stopper is engaged in the brake groove of the wheel,
The wheel has a wheel body and the brake groove, and the wheel body has a plurality of recessed brake grooves that are formed inwardly along the periphery of the wheel, and the pivot end of the control means. The brake device pivotally attached to the brake mechanism is provided with a wheel structure with a brake mechanism, wherein the stopper is fitted into the brake groove to fix the wheel and to control the wheel.

  The wheel structure with a braking mechanism is preferably a single-wheel type or a two-wheel type.

  In the case of a two-wheel type, a long hole is provided on the brake block of the brake means, and the long hole has an axial center from the both sides of the housing to the long hole when the brake block is mounted in the housing. Inserting and pivoting the wheel bodies of the two wheels, the brake grooves are respectively provided on two opposite surfaces of the two wheel bodies. It is preferable that the stopper is fitted into the brake groove provided on the front side.

  Fixed ears are respectively extended on at least two sides of the fixed block of the control means, and a plurality of members used for screwing the fixed block to the bottom of the transporting moving body are provided on the fixed ears. It is preferable that a hole is provided.

  It is preferable that the convex portion of the control means has an arc shape.

  The brake means has a top cover and a brake block, the bottom surface of the top cover is provided with a plurality of positioning holes arranged uniformly, the brake block is provided with a contact end at one end, A positioning shaft is in contact with the contact end, and an elastic body is disposed at each of an upper end portion and a lower end portion of the positioning shaft. When the positioning shaft is pressed against the contact end, the elastic body is compressed. It is preferable that the positioning shaft is inserted into the positioning hole in the top cover for positioning.

  It is preferable that an inclined guide side portion for fitting the stopper of the brake means is provided at each edge of the brake groove of the wheel.

  The present invention is configured as described above, has a simple structure, can stop a wheel quickly and reliably by a simple operation, and can stop a plurality of wheels by a single braking operation. Can do.

1 is an exploded perspective view showing a wheel structure with a braking mechanism of a single wheel type according to an embodiment of the present invention. 1 is a perspective view showing a wheel structure with a single-wheel brake mechanism according to an embodiment of the present invention. It is sectional drawing which shows the wheel structure with a braking mechanism before the operation | movement of the single-wheel format by one Embodiment of this invention. It is sectional drawing which shows the wheel structure with a braking mechanism after the operation | movement of the single-wheel type | mold by one Embodiment of this invention. 1 is an exploded perspective view showing a wheel structure with a two-wheel braking mechanism according to an embodiment of the present invention. It is sectional drawing which shows the wheel structure with a brake mechanism before the operation | movement of the two-wheel format by one Embodiment of this invention. It is sectional drawing which shows the wheel structure with a braking mechanism after the operation | movement of the two-wheel format by one Embodiment of this invention. It is a perspective view which shows the state which act | operates the several wheel structure by one Embodiment of this invention at once.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited thereby.

   Please refer to FIG. As shown in FIG. 1, a wheel structure with a braking mechanism according to an embodiment of the present invention includes at least a control unit 1, a brake unit 2, and a wheel 3.

  The control means 1 is a device that brakes a wheel by an external braking device, and includes a fixed block 11, a fixed ear 12, a control space 13, a control block 14, a pivot end 15, a slide guide surface 16, a channel 17, and a slide. The block 18 and the convex part 19 are included. Fixed ears 12 extend from at least two sides of the fixed block 11. The fixed ear 12 is provided with a plurality of engagement holes 121 used for screwing the fixed block 11 to the bottom of the article. A control space 13 is recessed in the fixed block 11. A control block 14 is accommodated in the control space 13. A pivot end 15 is provided on the side of the control block 14. The control block 14 is driven by the braking device, and the slide guide surface 16 and the channel 17 are provided on the control block 14. The slide guide surface 16 is a surface formed by inclining at a predetermined angle on the control block 14. The thickness of one end of the control block 14 is smaller than the thickness of the other end, and the slide block 18 is formed. An arc-shaped convex portion 19 is provided on the bottom surface of the slide block 18. The convex portion 19 corresponds to the slide guide surface 16 and moves the slide block 18 on the control block 14. The slide block 18 is provided with a pivot 24 of the brake means 2, and the pivot 24 is inserted into the channel 17.

  The brake means 2 is a device for braking the wheel by the control means 1, and includes a housing 21, a top cover 22, a shaft sleeve 23, a pivot shaft 24, a brake block 25, a stopper 26, a contact end 27, a positioning shaft 28, and an elastic body. 29. A top cover 22 is covered on the housing 21. The above-described top cover 22 is formed in a disk shape, and a plurality of positioning holes 221 arranged uniformly are provided on the bottom surface thereof. A shaft sleeve 23 is provided in the top cover 22, and a pivot 24 is provided in the shaft sleeve 23. The pivot 24 is penetrated from the shaft sleeve 23 to the inside of the fixed block 11 by the slide block 18, the channel 17, and the fixed block 11 of the control means 1, and a brake block 25 is screwed to the end of the pivot 24. The brake block 25 is provided at one end with a stopper 26 that is engaged in the brake groove 32 of the wheel 3 to obtain a brake function, and at the other end is provided with a contact end 27. The contact end 27 is in contact with the positioning shaft 28. The positioning shaft 28 is located in the housing 21. Elastic bodies 29 are respectively disposed on the upper end portion and the lower end portion of the positioning shaft 28. When the positioning shaft 28 is pressed against the contact end 27, the elastic body 29 is compressed, and the positioning shaft 28 is inserted into the positioning hole 221 in the top cover 22 and positioned.

  The wheel 3 is coupled to the housing 21 of the brake means 2 and includes a wheel body 31 and a brake groove 32. The wheel body 31 is provided with a brake groove 32 that is provided on the inner side along the periphery of the wheel. An inclined guide side portion 321 is provided at the edge of each brake groove 32. With this configuration, the stopper 26 of the brake means 2 is fitted into the brake groove 32, the stopper 26 is fitted into the inclined guide side part 321 to fix the wheel, and the wheel is braked.

  Please refer to FIG. As shown in FIG. 2, the wheel structure with a braking mechanism of the present embodiment includes at least a control means 1, a brake means 2, and a wheel 3.

  Please refer to FIG. 3 and FIG. As shown in FIGS. 3 and 4, a braking device 4 is pivotally attached to a wheel structure with a braking mechanism according to an embodiment of the present invention via a pivoting end 15 of the control means 1. In this embodiment, when actually used, the brake device 4 pulls the control block 14 of the control means 1 in a predetermined direction, and the pivot 24 of the brake means 2 moves in the channel 17 and penetrates the pivot 24. The slide block 18 and the convex portion 19 provided at the lower end thereof move along the slide guide surface 16 to a place where the thickness of the control block 14 is large, and the pivot 24 is displaced upward along with the slide block 18. Therefore, the stopper 26 is displaced upward by the brake block 25 screwed to the lower end of the pivot 24, and the stopper 26 is inserted into the brake groove 32 to apply the brake. When the pivot 24 is displaced upward along with the slide block 18, the brake block 25 screwed to the lower end of the pivot 24 drives the contact end 27 to displace upward, and the contact end 27 causes the elastic body 29 to move upward. , And the positioning shaft 28 is inserted into the positioning hole 221 in the top cover 22 and moved to the brake groove 32 for positioning.

  The wheel 3 of the wheel structure with a braking mechanism according to an embodiment of the present invention may be a single wheel type (see FIG. 1) or a two wheel type (see FIG. 5). As shown in FIG. 5, a long hole 251 is provided in the brake block 25 of the brake means 2 of the present embodiment. When the brake block 25 is mounted in the housing 21, the long hole 251 is inserted into the long hole 251 with the wheel bodies 31 of the two wheels 3 from both sides of the housing 21, and the two wheel bodies 31 are pivotally attached. Let On the surfaces of the two wheel bodies 31 facing each other, inclined guide side portions 321 are respectively provided, and when the brake is applied by the stoppers 26, the stoppers 26 are fitted into the inclined guide side portions 321 on both sides.

  Please refer to FIG. 6 and FIG. As shown in FIGS. 6 and 7, the wheel structure with a braking mechanism of the present embodiment is a two-wheel type, and is used when the pivoting end 15 of the control means 1 is pivotally attached to the braking device 4. When the control block 14 of the control means 1 is pulled in a predetermined direction by the braking device 4, the pivot 24 of the brake means 2 moves in the channel 17, the slide block 18 through which the pivot 24 penetrates, and the lower end of the slide block 18. The convex portion 19 provided on the upper surface of the control block 14 moves along the slide guide surface 16 to a place where the thickness of the control block 14 is large. As a result, the pivot 24 is displaced upward according to the slide block 18. Therefore, the brake block 25 screwed to the lower end of the pivot shaft 24 is displaced upward, and the shaft center pivotally attached to the wheel body 31 is driven from the top to the bottom in the long hole 251 to move the stopper 26 upward. When the pivot shaft 24 is displaced upward along with the slide block 18, the brake block 25 screwed to the lower end of the pivot shaft 24 is engaged. Displaces the contact end 27 upward, compresses the elastic body 29 by the contact end 27, inserts the positioning shaft 28 into the positioning hole 221 in the top cover 22, and moves it into the brake groove 32 to perform positioning. .

  Please refer to FIG. As shown in FIG. 8, the wheel structure with a braking mechanism of the present embodiment can be controlled by operating the control means 1 and the brake means 2 by an externally attached braking device 4, and a plurality of wheel structures. Since the body can be controlled and operated at the same time, the use efficiency is high and practical.

  Although the preferred embodiments of the present invention have been disclosed as described above, these do not limit the present invention in any way. Various changes and modifications can be made without departing from the spirit and scope of the present invention. Accordingly, the scope of the claims of the present invention should be construed broadly including such changes and modifications.

DESCRIPTION OF SYMBOLS 1 Control means 2 Brake means 3 Wheel 4 Braking device 11 Fixed block 12 Fixed ear 13 Control space 14 Control block 15 Pivoting end 16 Slide guide surface 17 Channel 18 Slide block 19 Convex part 21 Housing 22 Top cover 23 Shaft sleeve 24 Pivot 25 Brake block 26 Stopper 27 Contact end 28 Positioning shaft 29 Elastic body 31 Wheel body 32 Brake groove 121 Engagement hole 221 Positioning hole 251 Long hole 321 Inclination guide side part

Claims (6)

A wheel structure with a braking mechanism comprising a control means, a brake means and a wheel,
The control means includes a fixed block, a control space, a control block, a pivot end, a slide guide surface, a channel, a slide block, and a convex portion, and the control space is recessed in the fixed block, and the control space The control block is accommodated, and the pivot end is provided on a side portion of the control block, the control block is driven by a braking device, and the slide guide surface and the channel are placed on the control block. The slide guide surface is a surface formed on the control block by inclining at a predetermined angle, has the slide block, and the bottom surface of the slide block corresponds to the slide guide surface. A convex portion is provided, and the slide block is moved on the control block, and the slide block is pivoted on the slide block. There is pierced, the pivot is inserted in said channel,
The brake means includes a housing, a top cover, a shaft sleeve, a pivot shaft, a brake block, and a stopper. The top cover is provided on the housing, and the shaft sleeve is provided through the top cover. The pivot shaft penetrates the shaft sleeve, the pivot shaft penetrates the slide block, the channel and the fixed block of the control means, and the shaft sleeve penetrates the fixed block, The brake block is screwed at the end of the pivot, the brake block is provided with the stopper at one end, and the stopper is engaged in the brake groove of the wheel,
The wheel has a wheel body and the brake groove, and the wheel body is provided with a plurality of recessed recesses provided around the wheel.
The braking device pivotally attached to the pivot end of the control means is a wheel structure with a braking mechanism capable of fixing the wheel by fitting the stopper into the brake groove and braking the wheel. ,
The brake means has a top cover and a brake block, and a plurality of positioning holes arranged uniformly are provided on the bottom surface of the top cover,
The brake block is provided with a contact end at one end, a positioning shaft is contacted with the contact end, and an elastic body is disposed at each of an upper end portion and a lower end portion of the positioning shaft, and the positioning shaft Is pressed against the abutting end, the elastic body is compressed, and the positioning shaft is inserted into the positioning hole in the top cover for positioning .   The wheel structure with a braking mechanism according to claim 1, wherein the wheel structure is a single-wheel type or a two-wheel type. In the case of a two-wheel type, a long hole is provided on the brake block of the brake means,
When the brake block is mounted in the housing, the elongated hole is inserted into the elongated hole from both sides of the housing, and the wheel bodies of the two wheels are pivotally attached. The brake grooves are respectively provided on the two surfaces facing each other, and when the brake is applied by the stoppers, the stoppers are fitted into the brake grooves provided on both sides. The wheel structure with a braking mechanism as described. At least two sides of the fixed block of the control means are extended with fixed ears, respectively.
The wheel structure with a braking mechanism according to claim 1, wherein the fixed ear is provided with a plurality of engagement holes used for screwing the fixed block at the bottom of the article.   The wheel structure with a braking mechanism according to claim 1, wherein the convex portion of the control means has an arc shape.   The wheel structure with a braking mechanism according to claim 1, wherein an inclination guide side portion into which the stopper of the brake means is fitted is provided at each edge of the brake groove of the wheel.