JP2001130203A - Pedestal fixing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pedestal fixing device capable of surely operating to a locked state and an unlocked state. SOLUTION: This pedestal fixing device is disposed on a pedestal 8 having casters 5 so as to prevent the movement of the casters. The device comprises a housing 10, an adjuster 12 inserted liftably to the underside of the housing while being energized upward by an elastic member 115, and an operating pedal 2 having a pressing piece 21 pressing the adjuster downward. The operating pedal 2 comprises a lock pin 3 moving vertically according to the vertical movement of the adjuster 12, the housing 10 comprises a guide groove 4 for guiding the vertical movement of the lock pin 3, and a lock recessed part 42 locking the lock pin 3 so as to prevent the pin from rising is provided in the guide groove.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a footrest fixing device for preventing movement of casters provided on a table or the like.

[0002]

2. Description of the Related Art As shown in FIG. 9, a rolling type caster 88 is provided on a table 9 to facilitate its moving operation.
Some are provided. The casters 88 are rotatably provided on the leg base 8 of the table 9. The footrest 8 is provided with a top plate 91 via a pillar 92. In addition, the footrest 8
Is provided with a footrest fixing device 96 having an adjuster 961 movable up and down adjacent to the caster 88.

In moving the table 9, the casters 88 are rolled to place the table 9 at a desired position. Then, in order to fix the table 9 at that position, the adjuster 961 of the footrest fixing device 96 is lowered, and the tip thereof is brought into contact with the floor surface. At this time, the lower end of the caster 88 is usually launched about 1 mm above the floor. As a result, the table 9 is fixedly arranged at a predetermined position. Reference numeral 95 denotes a non-fixed type caster. As such a footrest fixing device, there is one using, for example, an operation pedal, a lever and an elevating rod (adjuster) (Japanese Utility Model Laid-Open No. 2-133905). In addition, there is a type using an operating pedal, a cam and a fixed body (adjuster) (actually open flat 7-1).
5403).

[0004]

However, in any of the above-mentioned conventional footrest fixing devices, the lever or the cam is locked between the operating pedal and the adjuster. Therefore, when a large vibration impact is applied to the footrest while using the table, the locked state of the lever or the cam may be released, and the table may move.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has as its object to provide a footrest fixing device capable of reliably operating a locked state and an unlocked state.

[0006]

According to a first aspect of the present invention, there is provided a footrest fixing device disposed on a footrest having a caster to prevent the movement of the caster, wherein the footrest fixing device includes a housing, A cylindrical portion provided at a lower portion of the housing; an adjuster inserted in the cylindrical portion so as to be able to move up and down while being urged upward by an elastic member; An operating pedal having a pressing piece for pushing down the adjuster, and the operating pedal has a lock pin that moves up and down in response to the elevation of the adjuster, and the housing moves the lock pin up and down. It has a guide portion provided with a guide groove for guiding, and the guide groove is provided with a lock concave portion which locks the lock pin and prevents the lock pin from rising, and presses the operation pedal. When the adjuster is lowered against the urging force of the elastic member via the pressing piece, the lock pin moves down in the guide groove in conjunction with the lowering and is locked in the lock recess. When the adjuster is held at the lowered position to form a locked state, and when the operating pedal is further pressed, the lock pin disengages from the lock recess and the lock pin moves along the guide groove by the urging force of the elastic member. And the adjuster is also raised to form an unlocked state.

The most notable points in the present invention are that an operating pedal having a pressing piece for pressing down an adjuster is provided on the housing, a lock pin is provided on the operating pedal, and the lock pin is raised and lowered on the housing. A guide portion having a guide groove for guiding the movement is provided, and the lock groove for holding the adjuster at the lowered position is provided in the guide groove.

Next, the function and effect of the present invention will be described.
When a conference table or the like is moved to a predetermined position, the table is moved by rolling a caster provided on the footrest. Then, when the footrest comes to a predetermined position, the adjuster is lowered by pressing the operating pedal and resisting the urging force of the elastic member via the pressing piece. At this time, in conjunction with this, the lock pin descends in the guide groove and is hooked on the lock recess to hold the adjuster at the lowered position to form a locked state.

Next, when moving, the operation pedal is pressed. As a result, the lock pin disengages from the lock recess, and the lock pin rises along the guide groove by the urging force of the elastic member, and the adjuster also rises to form the unlocked state.

As described above, in the footrest fixing device of the present invention, in the locked state, the lock pin is engaged with the lock recess of the guide groove. In this hooked state, the lock pin is strongly pressed in the direction of the lock recess by the urging force of the elastic member attached to the adjuster. Then, the adjuster comes into contact with the floor surface and raises the caster by, for example, about 1 mm to prevent the caster from moving. Therefore, even when a large impact is applied to the footrest, the lock pin and the lock recess are not disengaged from each other, and the lock is not released.

In order to release the lock, the operating pedal is pressed against the urging force of the elastic member attached to the adjuster to disengage the lock pin from the lock recess, and the lock pin is released from the elastic pin. It is raised along the guide groove by the urging force of the member, and the adjuster is also raised accordingly. As a result, the lock is released, the adjuster rises, and the caster comes into contact with the floor surface and becomes movable. Thus, according to the present invention, the locked state and the unlocked state are reliable.

Next, as in the second aspect of the present invention, it is preferable that the guide groove is formed in a substantially vertically elliptical shape, and that the lock groove is provided above the lowermost groove. Thereby, the lock pin smoothly moves in the longitudinal direction along the guide groove, and the operation of the operating pedal and the adjuster, the locked state, and the unlocked state can be smoothly performed.

Next, the lock recess in the guide groove is deeper than the descent groove in which the lock pin descends, so that the lock pin is unlocked and the lock pin rises. It is preferable to have a pin insertion groove shallower than the ascending groove. Thus, when the lock pin is lowered, it can be smoothly moved in the order of the locked state and the unlocked state, and the operation of the operating pedal and the adjuster, the locked state and the unlocked state can be smoothly performed.

Next, a rotatable operating piece is provided between the pressing piece of the operating pedal and the head of the adjuster. Preferably, the adjuster is configured to be pressed down. Thus, the operating piece reduces the frictional force between the pressing piece and the adjuster. Therefore, as compared with the case where the adjuster is directly pressed down by the pressing piece, the lowering of the adjuster can be smoothly performed by the rotation of the operating piece.

Next, the head of the adjuster is covered with an upper cap, and a shock absorbing member is interposed between the upper cap and the head. It is preferred that As a result, the adjuster is pressed down by the pressing piece via the shock absorbing member and the upper cap. Therefore, as compared with the case where the adjuster is directly pressed down by the pressing piece, the downward force applied to the adjuster is reduced, and the lock state can be smoothly achieved. Also, no sudden impact is applied to the adjuster.

Next, as in the sixth aspect of the present invention, the caster and the footrest fixing device are integrally provided to constitute a movable fixed part, and the movable fixed part is fixed to the footrest. It is preferable that it is detachably fixed. In this case, a unit in which the footrest fixing device and the caster are integrally formed is formed as one unit (movable fixing part), and the unit is detachably attached to the footrest. Therefore, the movable fixed portion becomes compact, and when the caster breaks down, the unit can be easily restored by replacing the unit, and the caster can be separately repaired.

The footrest fixing device according to the present invention can be provided on a footrest of a table such as a conference table, a dining room table, a moving chair, a moving partition, or the like.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 shows a footrest fixing device according to an embodiment of the present invention.
This will be described with reference to FIGS. As shown in FIGS. 1 to 4, the footrest fixing device 1 of this embodiment is provided on a footrest 8 having casters 5 of a table (not shown) to prevent the casters 5 from moving. . The footrest fixing device 1 includes:
The housing 10, a cylindrical portion 11 provided below the housing 10, and an elastic member 115 inside the cylindrical portion 11.
An adjuster 12 inserted so as to be able to move up and down in a state of being urged upward, and an operating pedal 2 pivotally supported by the housing 10 and having a pressing piece 21 for pushing down the adjuster 12. (FIGS. 1 and 2). The adjuster 12 has a wide ground portion 120 at the lower end.

The operating pedal 2 has a lock pin 3 which moves up and down in response to the elevation of the adjuster 12 (FIGS. 1 to 4). The housing 10 has a guide portion 40 provided with a guide groove 4 for guiding the ascending and descending movement of the lock pin 3, and the lock pin 3 is engaged with the guide groove 4 to prevent the lock pin 3 from rising. A lock recess 42 is provided (FIGS. 1 and 4). As shown in FIGS. 1 to 3, the lock pin 3 is provided on a rod 30, and the rod 30 is connected to the back surface of the operation pedal 2 via a shaft pin 35 and a lower plate 27. The rod 30 is rotatably mounted on the lower plate 27.

As shown in FIG. 3, the lock pin 3 is moved in the direction of the lowering groove 410, the pin inserting groove 420, and the raising groove 430 in the rod 30.
It is urged and arranged by. Therefore, the pin tip 31 of the lock pin 3 moves in the guide groove 40 in a state of contacting each of the grooves. The distal end 23 of the operation pedal 2 is configured to enter the front recess 101 of the housing 10 (FIGS. 1 and 2). The front portion of the operation pedal 2 is rotatably fixed to the housing 10 via a plate 22 and a shaft pin 221. On caster 5,
A cover 51 is provided.

As shown in FIGS. 1, 2, and 4, the guide groove 4 is formed in a bent substantially vertically elliptical shape, and is provided above a pin insertion groove 420 which is the lowermost groove. The lock recess 42 is provided. The lock recess 42 is located closer to the ascending groove 430 than the hanging line Y at the position of the lock pin in the unlocked state (FIG. 4A). Also, FIG.
As shown in FIGS. 2, 4 and 6, the lock recess 42 in the guide groove 4 is deeper than the descent groove 410 in which the lock pin descends, and the lock pin is unlocked, and the lock pin 3 is unlocked. It has a pin insertion groove 420 which is shallower than the ascending groove 430. The upper portion of the ascending groove 430 has the same depth as the upper portion of the descending groove 410.

As shown in FIGS. 1 and 2, the pressing piece 21 of the operating pedal 2 and the head 12 of the adjuster 12 are provided.
1, a rotatable operating piece 28 is provided, and the adjuster 12 is pressed downward via the operating piece 28. The operating piece 28 is rotatably supported by the housing 10 via a shaft pin 31. The head 121 of the adjuster 12 is covered with an upper cap 122, and a leaf spring-shaped shock absorbing member 13 is interposed between the upper cap 122 and the head 121. .

As shown in FIGS. 1, 2, and 7, the caster 5 and the footrest fixing device 1 are integrally provided to constitute a movable fixing portion 100.
0 is detachably fixed to the footrest 8. The footrest 8 is a square pipe and has an insertion port 80 at the tip end for inserting the movable fixing part 100. The insertion port 80 has an upper cutout 81 and a lower cutout 82. In addition, the movable fixing unit 100 is fixed to the footrest 80 with screws 86.

Next, the operation and effect of the footrest fixing device 1 of this embodiment will be described. When the table is moved to the predetermined position, as shown in FIG. Roll and move. Then, when it comes to the predetermined position, as shown in FIG. 2, the adjuster 1 is pressed against the urging force of the elastic member 15 through the pressing piece 21 by pressing the operation pedal 2.
Lower 2 At this time, in conjunction with this, FIG.
As shown in FIG. 5A, the lock pin 3 moves down the lowering groove 410 of the guide groove 4. Finally, it is hooked on the lock recess 42. Thereby, adjuster 1
2 is held in the lowered position to form a locked state. At this time, the tip 31 of the lock pin 3 is inserted into the pin insertion portion 420 (FIGS. 4B and 5B).

Next, when trying to move the table, the operating pedal 2 is pressed. As a result, the lock pin 3 is disengaged from the lock recess 42, and the urging force of the elastic member 115 causes the operating piece 28, the pressing piece 2
The rear of the operating pedal 2 is lifted via 1. In addition, the lock pin 3 is provided with the rising groove 43 of the guide groove 4.
The adjuster 12 ascends along with 0 (FIGS. 2, 4 and 5C) and forms an unlocked state.

As described above, in the footrest fixing device 1 of this embodiment, in the locked state, the lock pin 3
Is locked in the lock recess 42 of the guide groove 4 (FIGS. 2, 4B and 5B). In this locked state, the lock pin 3 is strongly pressed in the direction of the lock recess 42 by the urging force of the elastic member 115 attached to the adjuster 12. Then, the grounding portion 120 of the adjuster 12 comes into contact with the floor surface, and the caster 12 is moved by, for example, 1 m.
By moving the caster 12 by about m (FIG. 2). Therefore, even when a large impact is applied to the footrest 8, the lock pin 3 and the lock recess 42 are not disengaged from each other, and the lock is not released.

To release the lock, the operating pedal 2 is pressed against the urging force of the elastic member 115 provided along with the adjuster 12, and the lock pin 3 and the lock recess 42 are disengaged. At this time, the tip of the lock pin 3 moves to the ascending groove 430 deeper than the pin insertion groove 420 by the urging force of the elastic member 115. Then, the lock pin 3 is raised along the lifting groove 430 of the guide groove 4 by the urging force of the elastic member 115. In addition, the adjuster 12 is also raised accordingly. Also,
The lock recess 42 is closer to the ascending groove 430 than the vertical line Y (FIG. 4A) of the lock pin position in the unlocked state. Therefore, the lock pin 3 is raised. As a result, the lock is released, the adjuster 12 is raised,
The caster 5 comes into contact with the floor and becomes movable (FIG. 1). Thus, according to this example, the locked state and the unlocked state are reliable.

Next, the guide groove 4 is formed in a substantially vertically elliptical shape, and has the lock recess 42 above the lowermost groove. Therefore, the lock pin 3
Moves smoothly in the longitudinal direction along the guide groove 4,
The operation of the operation pedal 2 and the adjuster 12, the locked state, and the unlocked state can be smoothly performed.

The lock recess 4 in the guide groove 4
2 has a pin insertion groove 420 deeper than the lowering groove 410 in which the lock pin 3 descends, the lock pin 3 being unlocked, and shallower than the ascending groove 430 in which the lock pin 3 rises (FIG. 4). , FIG. 5). Therefore, when the lock pin 3 is lowered, the lock pin 3 can be smoothly moved in the order of the lock state and the unlock state, so that the operation of the operation pedal 2 and the adjuster 12, the lock state, and the unlock state can be performed smoothly.

A rotatable operating piece 28 is provided between the pressing piece 21 of the operating pedal 2 and the head 121 of the adjuster 12, and the adjuster 12 is pressed downward through the operating piece 28. (FIGS. 1 and 2). Therefore, the operating piece 28 reduces the frictional force between the pressing piece 21 and the adjuster 12. Therefore, as compared with the case where the adjuster 12 is directly pushed down by the pressing piece 21, the pushing down of the adjuster 12 can be made smoother by the rotation of the operating piece 28.

The head 121 of the adjuster 12 is covered with an upper cap 122.
An impact absorbing member 13 is interposed between the head 2 and the head 121 (FIGS. 1 and 2). Therefore, adjuster 12
Is pressed down by the pressing piece 21 via the shock absorbing member 115 and the upper cap 122. Therefore, the pressing piece 21
As a result, the downward force applied to the adjuster 12 is reduced as compared with the case where the adjuster 12 is directly pressed down, and the lock state can be smoothly achieved. Also, no sudden impact is applied to the adjuster.

The caster 5 and the footrest fixing device 1
Are provided integrally with each other to form a movable fixing portion 100, and the movable fixing portion 100 is detachably fixed to the footrest 8 (FIGS. 1 and 7). For this reason, a unit in which the footrest fixing device 1 and the caster 5 are integrally formed can be regarded as one unit (movable fixing portion), and the unit can be detachably attached to the footrest. Therefore, the movable fixing unit 100 becomes compact, and when the caster breaks down, the unit can be easily restored by replacing the unit, and the caster can be separately repaired.

Second Embodiment As shown in FIG. 8, this embodiment shows a footrest fixing device in which the position of the casters 5 in the first embodiment is brought closer to the axis of the adjuster 12. That is, in this example, a part of the caster 5 is arranged in parallel on the side surface of the adjuster 12. 8, reference numeral 55 denotes an axis of the caster 5, and reference numeral 118 denotes a cover of the adjuster 12. Other configurations are the same as those of the first embodiment.

In this embodiment, the same operation and effect as those of the first embodiment can be obtained. In this example, since the adjuster 12 and the caster 5 are partially arranged in parallel,
A compact footrest fixing device can be provided.

[0035]

According to the present invention, it is possible to provide a footrest fixing device capable of reliably operating the locked state and the unlocked state.

[Brief description of the drawings]

FIG. 1 is a side cross-sectional view of a footrest fixing device according to a first embodiment when an adjuster is not operated (movable).

FIG. 2 is a side cross-sectional view of the footrest fixing device according to the first embodiment when the adjuster is actuated (fixed).

FIG. 3 is a plan view of the footrest fixing device according to the first embodiment with an operation pedal removed.

FIG. 4 shows the footrest fixing device according to the first embodiment.
FIG. 6A is an explanatory diagram showing the positions of the guide groove and the lock pin when the adjuster is not operated and when the adjuster is fixed.

FIG. 5 shows the footrest fixing device according to the first embodiment.
(A) When the adjuster is not operating, (B) When the adjuster is fixed,
(C) Explanatory drawing which shows the position of the lock pin in a guide groove at the time of a lock release state.

FIG. 6 is a front view of the footrest fixing device according to the first embodiment.

FIG. 7 is an explanatory view of assembling a footrest with a movable fixing part in which a footrest fixing device and a caster are integrated in the first embodiment.

FIG. 8 is a side cross-sectional view of the footrest fixing device according to the second embodiment when the adjuster is not operated (movable).

FIG. 9 is an explanatory view of a table in which an adjuster is provided on a footrest in a conventional example.

[Explanation of symbols]

 1. . . 10. Footrest fixing device, . . Housing, 11. . . Tube part, 115. . . Elastic member, 12. . . Adjuster, 13. . . 1. shock absorbing member, . . Actuation pedal, 21. . . Press pieces, 28. . . Working piece, 3. . . Lock pin, 31. . . 3. Pin tip, . . Guide groove, 40. . . Guide part, 42. . . Lock recess, 410. . . Descent groove, 420. . . Pin insertion groove, 430. . . 7. ascending groove; . . Footrest,

Claims (6)

[Claims] 1. A footrest fixing device disposed on a footrest having a caster to prevent the movement of the caster, the footrest fixing device comprising a housing and a cylinder provided at a lower portion of the housing. And an adjuster inserted in the cylindrical portion so as to be able to move up and down while being urged upward by an elastic member, and a pressing piece rotatably supported by the housing and pushing down the adjuster. An operating pedal, and the operating pedal has a lock pin that moves up and down in response to the elevation of the adjuster, and the housing has a guide groove that guides the up and down movement of the lock pin. The guide groove is provided with a lock concave portion which locks the lock pin and prevents the lock pin from rising. When the adjuster is lowered against the urging force of the elastic member, the lock pin moves down in the guide groove in conjunction with the lowering and is locked by the lock recess to hold the adjuster at the lowered position. When the operating pedal is pressed further, the lock pin disengages from the lock recess and the lock pin is raised along the guide groove by the urging force of the elastic member, and the adjuster is also moved. A footrest fixing device configured to ascend to form an unlocked state. 2. The footrest fixing device according to claim 1, wherein the guide groove is formed in a substantially vertically elliptical shape, and has the lock concave portion above a lowermost groove thereof. 3. The ascending device according to claim 1, wherein the lock recess in the guide groove is deeper than a descent groove in which the lock pin descends, the lock pin is in an unlocked state, and the lock pin rises. A footrest fixing device having a pin insertion groove shallower than the groove. 4. The method according to claim 1, wherein:
A leg is provided between the pressing piece of the operating pedal and the head of the adjuster, a rotatable operating piece is provided, and the adjuster is pressed downward through the operating piece. Table fixing device. 5. The method according to claim 1, wherein:
The head of the adjuster is covered with an upper cap.
A footrest fixing device, wherein a shock absorbing member is interposed between the upper cap and the head. 6. The method according to claim 1, wherein:
The caster and the footrest fixing device are integrally provided to constitute a movable fixing part, and the movable fixing part is detachably fixed to the footrest. apparatus.