JPH1148705A - Caster lock device in cabinet or the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make operation possible locking/unlocking a lock device of a caster by only stepping in of a foot, by tilting a rotary bar successively provided in line with a foot pedal, interposition stopping from both sides the caster width- contracted against a spring in a stopper able to slide, maintaining a condition interposition stopped by this stepping in operation, and providing an association equipment which can release the maintained condition when the foot pedal is stepped in. SOLUTION: In a caster lock device providing a foot pedal 2 in a front side lower part of a main unit of cabinet or the like, able to stop/release rotation of a caster by operation stepping in the foot pedal 2, the caster 4 is stopped by interposition from both sides against a spring 21 in a stopper able to slide to be width contracted by tilting a rotary bar 9 successively provided in line with the foot pedal 2 and an interposition stopped condition by this stepping in operation is maintained. An association equipment 14 is provided, which can release the maintained condition when the foot pedal 2 is further stepped in. In this way the caster can be stopped and released, operability is extremely improved with single operation by stepping in the foot pedal in the front side lower part of the cabinet main unit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention has a very simple structure. The outer surfaces of both sides of a fixed caster are sandwiched by pressing pieces made of rubber or the like to stop the caster, and the stopper member is operated only by depressing a foot pedal. The present invention relates to a caster lock device for a wagon, a side table, a cabinet, and the like to be operated.

[0002]

2. Description of the Related Art Conventionally, as a caster lock device in such a cabinet or the like, there is a caster lock device which can be locked by directly pressing down a foot-operated pedal attached to two casters themselves via a cover or the like. .

[0003] Further, a stop mechanism connected to the caster from the upper part of the wagon body, for example, "a recess is provided at one end of a top plate attached to the upper part of the table body, and the table body is inserted through a gripping rod sliding opening of the recess. In a side table in which a gripping rod for braking this wheel is inserted vertically movably toward wheels disposed on both sides of the lower end of the other end, on the upper side of a position where the gripping rod reaches when pressed down, A wheel stopper for braking the wheel is arranged so as to be able to swing up and down,
On the lower side of the same reaching position, a lock release plate for lifting the convex piece for locking the drawer is arranged so that one end can be lowered by its own weight, and a lock with the convex piece attached to the lower end. At the upper end of the plate, there is provided a side table braking device (see Japanese Utility Model Application Laid-Open No. 62-183728) in which the other end of a locking rod having a lock attached to one end communicating with the outside is pivotally connected to the other end.

[0004] Further, a stopper mechanism comprising a rotary caster provided on one of the front and rear portions of the lower surface and a fixed roller provided on the other, and a stopper portion for regulating the rotation of the fixed roller and an operation portion for operating the stopper portion is provided. A movable storage provided, wherein a stopper portion and an operation portion are wire-linked,
The fixed roller is arranged at the rear of the front and rear parts of the lower surface, the operation part is arranged at the front upper part of the storage, and the stopper part is the rotation axis of the fixed roller on the engaged part provided inside the fixed roller. And an engaging portion capable of engaging and disengaging by moving in the direction, and the engaging portion is disposed on the inner peripheral side with respect to the outer peripheral end surface of the fixed roller when viewed in the rotational axis direction of the fixed roller. There is a "movable storage" (see Japanese Patent Application Laid-Open No. 8-294418).

[0005] Further, an operation section is provided at the lower portion of the main body to stop the casters. "A wheel and a stopper mechanism are provided at the bottom of the wagon, and the wheel forms a locking portion and is attached to the bottom. The stopper mechanism is provided on an end of the bottom portion, and is provided at one end of the bottom portion so as to be swingable about a pin. A transmission part movable in the longitudinal direction by operation, and a regulating part connected to the other end of the transmission part via a pin and having a stopper at the end, the stopper being a locking part There is a wagon that can be engaged (see Japanese Utility Model Laid-Open No. 4-101632).

[0006]

However, in the prior art, since the lock device is attached to each of the two casters, when stopping the rotation of the casters, the casters can be operated by stepping on the feet. In order to release the rotation, the user cannot easily release the rotation with his / her feet, so the user must squat down and operate with his / her hand, which is very inconvenient.

Further, a wagon or the like that operates a stop mechanism to a caster by operating a handle from the upper part of the main body has a problem that the structure is complicated and the assembling work is difficult. In addition, in the configuration disclosed in Japanese Utility Model Laid-Open No. 4-101632, in which an operation section is provided at the lower portion of the main body to stop the casters, operation with feet (toes) is difficult due to the configuration, and operation with hands is required. There was a problem that the caster could not be stopped.

SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide a caster lock device in a cabinet or the like in which the lock device of a caster can be disengaged and operated by a simple operation with only a simple step. It is assumed that.

[0009]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and employs the following technical means. According to the first aspect of the present invention, in a caster lock device for a cabinet or the like, a foot pedal is provided at a lower portion on the front side of a main body 1 such as a cabinet or the like, and rotation of the caster can be stopped and released by an operation of stepping on the foot pedal. In the caster lock device, the tilting of the rotary rod connected to the foot pedal reduces the width of the caster against the spring in the slidable stopper, and stops the caster from both sides. In addition, a technical means is adopted in which an interlocking device capable of releasing the maintenance state when the foot pedal is depressed is provided.

[0010] In the second aspect of the present invention, the first aspect is provided.
In addition to the above-described invention, an interlocking device operated by a stepping operation of a foot pedal has a cam groove and a locking recess, a shaft fixed to the foot pedal is engaged with the cam groove, and the locking recess is a foot recess. When the foot is depressed by rotating the cam groove as a guide so that it can be locked with the locking projection formed on the receiving plate of the pedal, the locking projection formed on the receiving plate of the foot pedal by the spring force. The technical means of engaging with the locking concave portion of the interlocking device was adopted.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention employs the above-mentioned technical means, has a simple structure, and operates a foot lever by depressing a toe of a foot to expand and contract two lock operating pieces. The casters can be disengaged by pinching the outer surfaces on both sides so that they can be locked during contraction and released during expansion.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a schematic perspective view of a horizontally long cabinet according to one embodiment.
Is a foot pedal, 3 is a drawer container, 4 is a fixed caster,
5 is a free caster.

Next, a specific embodiment of the mounting portion of the caster lock device of the present invention will be described with reference to FIG. 2, and the example of the horizontally long cabinet shown in FIG. 1 will be described. First, when the drawer drawer side is viewed from the front side, the left and front casters are fixed casters 4 and the right and front casters are free casters 5 as an example showing the view from the bottom side. The foot pedal 2 is provided on the front side to lock the fixed caster 4.

FIG. 3 shows a prior art cabinet. It is a free caster 5 as viewed from the bottom side, and a stopper is provided on one of the left and right casters.

Next, a specific embodiment of the caster lock device will be described with reference to FIG. As corresponding to the embodiment shown in FIG. 2, FIGS. 4 to 9 show a state in which the caster lock device is not operated and the casters are unlocked and can be moved. FIG.
FIG. 11 is a diagram showing a state where the casters are locked. FIG. 12 is an exploded perspective view of the foot pedal 2, and FIG. 13 shows a lock mechanism of the caster.

First, the foot pedal 2 will be described with reference to FIG. Needless to say, the lever plate 6 and the lever 7 may be integrated. An engaging hole 8 is formed in the lever plate 6 so that an integral or separate engaging portion 10 formed on a part of the rotating rod 9 is engaged with the engaging hole 8. Can be assembled.
Further, a receiving plate 11 to be engaged with the lever plate 6 is provided, and an interlocking device 14 is provided via a first spring 13 so as to be able to be engaged with and disengaged from the projection 12 of the receiving plate 11.

Next, the caster lock device will be described with reference to FIG. A substantially L-shaped stopper A15,
Elongated holes 18 each having a substantially U-shaped stopper B16
Is moved in the sliding direction by the stepped screw 17 through the shaft, but is not moved in the other direction. Between the stopper A15 and the stopper B16, the end 2 of the rotary rod 9 is provided.
When the lever 7 of the foot pedal 2 is depressed, the rotating rod 9 is inserted through the engaging portion 10 of the rotating rod 9 engaged with the engaging hole 8 formed in the lever plate 6. The end portion 20 is rotated by this rotation, and the spring 21 is compressed between the stopper A15 and the stopper B16 as shown in FIG. Press both sides. Since the stopper rubber 19 is attached to the portion where the pressure is applied, as can be understood from FIGS. 11 and 13, the locking is more secure.

Next, a state in which the caster moves, that is, a state in which the lock is released will be described with reference to FIGS. As can be understood from the description of FIG.
When two fixed casters 4 are connected to the bottom surface of the caster by a shaft 23 via a bearing 22 and one fixed caster 4 is locked, the other fixed casters 4 can also be locked.

The specific caster lock device in the embodiment shown in FIG. 2 will be described. The stopper A1 is formed by reversing the L-shaped stopper A15 and the U-shaped stopper B16.
5 is overlapped so as to be covered with a stopper B16, and is fixed to the bottom surface of the cabinet main body 1 with a stepped screw 17 at two places at a long hole 18 portion.

The vertical piece 24 of the stopper A15
When the stopper A15 of the stopper B16 is superposed,
The stopper rubber 19 is fixed to the vertical piece 25 of the stopper B16 opposite to the vertical piece 24 of the L-shaped stopper A15 so that the end 20 of the rotating rod 9 is always in a vertical state. The width between the stopper A15 and the stopper B16 is widened by a spring 21. This state is the state shown in FIGS.

Next, as can be understood from the description of FIG. 12, the foot pedal 2 in a state in which the caster can be rotated and moved is in a state shown in FIG. It has become. The first spring 1 as a tension spring is associated with the lever 7, the lever plate 6, and the receiving plate 11 of the foot pedal 2.
3, the cam hole 28 in which the interlocking tool 14 is engaged with the shaft 27.
As a result, it is maintained in a vertical state as shown in FIG. Further, as can be understood from FIGS. 8 and 9, the engaging portion 10 of the rotating rod 9 is combined so as to engage with the engaging hole 8 formed in the lever plate 6.

Next, a description will be given of a state where the casters are locked from FIG. 10 and FIG. When the lever 7 of the foot pedal 2 is stepped on by a foot (as indicated by an arrow in FIG. 10), the engaging portion 10 of the rotating rod 9 is centered on the rotating center position 29 of the rotating rod 9 by the engaging hole 8 of the lever plate 6. To rotate,
In conjunction with the first spring 13, the interlocking tool 14 is
Is guided by the shaft 27 fixed to the lever plate 6 to move upward while being engaged with the lower portion of the cam hole 28 of the interlocking tool 14 at the same time as the engagement provided at the lower part of the interlocking tool 14. The portion 30 is maintained in engagement with the protrusion 12 provided on a part of the receiving plate 11. Then, as shown in FIG. 11, the end portion 20 of the rotating rod 9 rotates about the rotation center position 29, and presses the stopper A15 against the spring 21 so that both sides of the caster are in contact with the stopper A15. The caster is locked by pinching with B16.

Further, when the lever 7 of the foot pedal 2 is depressed, the left side is slightly tilted upward from the state shown in FIG. The engagement portion 30 of the interlocking tool 14 is disengaged from the projection 12 of the receiving plate 11 due to the relationship with the shaft 27 of the lever plate 6, and when the depression of the lever 7 is released at the same time, the state returns to the state of FIG. is there.

[0024]

According to the present invention, the following effects can be obtained based on the above configuration. (1) The caster can be stopped and released by a one-touch operation of depressing a foot pedal at the lower front side of the cabinet body. (2) Can be performed with feet (toes) without operating by hand,
It is not necessary to squat. (3) Two fixed casters can be locked with one lever.

[Brief description of the drawings]

FIG. 1 is a schematic overall perspective view showing a horizontally long cabinet main body according to an embodiment of the present invention.

FIG. 2 is a bottom view for explaining the arrangement of casters as viewed from the bottom of the horizontally long cabinet shown in FIG. 2 of the present invention.

FIG. 3 is a bottom view illustrating the arrangement of casters in a conventional cabinet.

FIG. 4 is a front view of one embodiment showing an unlocked state of the caster lock device of the present invention.

FIG. 5 is a bottom view of the caster lock device in the embodiment shown in FIG.

FIG. 6 is a side view of the caster lock device in the embodiment shown in FIG.

FIG. 7 is a side view showing the foot pedal in a movable state where the caster is unlocked.

FIG. 8 is a bottom view of the foot pedal in the embodiment.

FIG. 9 is a front view of the foot pedal in the embodiment.

FIG. 10 is a side view showing the foot pedal in a locked state in which the caster is locked and cannot be moved.

FIG. 11 is a front view showing a locked state of the caster lock device of the embodiment shown in FIG.

FIG. 12 is an exploded perspective view of the foot pedal of the present invention.

FIG. 13 is an exploded perspective view of the caster lock device of the present invention.

[Explanation of symbols]

1 cabinet body 2 foot pedal 3 drawer container 4 fixed caster 5 free caster 6 lever plate 7 lever 8 engagement hole 9 rotation bar 10 engagement Part 11 receiving plate 12 projection 13 first spring 14 interlocking device 15 stopper A 16 stopper B 17 stepped screw 18 slotted hole 19 stopper rubber 20 ‥ End 21 ‥‥ Spring 22 ‥‥ Bearing 23 ‥‥ Shaft 24 ‥‥ Stopper A
Vertical piece of the stopper 25 vertical piece of the stopper B 26 second spring 27 shaft 28 cam hole 29 rotation center position 30 engagement part

Claims (2)

[Claims] 1. A caster lock device in which a foot pedal is provided at a lower portion on the front side of a main body such as a cabinet, and rotation of the caster can be stopped and released by depressing the foot pedal. By the tilting, the width is reduced against the spring in the slidable stopper, and the casters are pinched and stopped from both sides.
A caster lock device for a cabinet or the like, characterized in that an interlocking device is provided which maintains a state in which the holding operation is stopped by the stepping operation and which can release the state of maintenance when the foot pedal is depressed. 2. An interlocking device operated by depressing operation of a foot pedal has a cam groove and a locking recess, a shaft fixed to the foot pedal is engaged with the cam groove, and the locking recess of the foot pedal is When the foot is depressed by rotating the cam groove as a guide so that it can be locked with the locking projection formed on the receiving plate, the locking projection formed on the receiving plate of the foot pedal by the spring force is used as an interlocking member. 2. The caster lock device for a cabinet or the like according to claim 1, wherein said caster lock device is adapted to engage with said locking recess.