JPH07298939A - Moving device for furniture - Google Patents

Abstract

PURPOSE:To easily move furniture by employing such constitution that a mobile grounding body is protruded by ascending the bottom of the furniture and the protrusive state of the mobile grounding body can be maintained even when the bottom of the furniture is descended in such a state. CONSTITUTION:A leg is separated from a floor by pulling up the back of a chair. The mobile grounding body 16 is retreated in a cylinder 3 by being pushed up to an ascending position against the pressing force of the spring 13 of an elevator 6 by gravity of a chair. The elevator 6 is descended from a state in which a locking tool 7 is brought into contact with one side plane of the elevator 6 with a posture facing in the up-and-down direction to a position where the locking tool 7 is engaged with a stopper piece 11, and also, the locking tool 7 takes an oblique posture by engaging the engaging protrusive part 7a of the locking tool 7 with the operating projection 12 of the stopper piece 11. At this time, the mobile grounding body 16 is protruding widely. Thence, when the back of the chair is descended, the locking tool 7 takes the oblique posture, and a ball 15 attached on the mobile grounding body 16 can be rolled on the floor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a moving device for attaching furniture to the bottom of a furniture so that the furniture can be moved lightly, and more particularly to a sphere or a wheel by lifting a portion of the furniture bottom where the moving device is attached. The present invention relates to a furniture moving device that allows a moving grounding body such as a sled for sliding to move in and out.

[0002]

2. Description of the Related Art Conventionally, for example, in a chair or a table, it is known that a lower end of a leg thereof is provided with a moving means such as a caster (free wheel) for moving or not. There is no one that makes it easy to move in and out as needed. Incidentally, the caster is usually provided with an operation piece for locking and fixing its wheels.

In the case of a closet or the like, a moving means such as a sphere or a caster is retracted at the time of installation, and the moving means is projected from the bottom surface by operating the operation handle at the time of moving. There is.

[0004]

However, in the case where the lower end of the legs is not attached to the chair or table, it is heavy and troublesome to lift and move them one by one when moving them. Also, because of that, the floor surface is often dragged, which causes a problem such as scratching the floor surface.

On the other hand, in the case where a moving means such as a caster is attached, there is a problem in that it is not comfortable because it is easy to move even when a chair or a table is used, and it is not comfortable to use. In the case of a caster, the wheels can be locked and fixed during use, but even in that case, the caster can rotate around the vertical axis, so it cannot be installed in a completely fixed state, and there is a problem of lack of stability. It was

Further, in the case where the operation handle in the closet or the like is operated to move the moving means out and back, there is a problem that the operation mechanism has a large-scale structure, so that the cost is high and the application target is limited. In addition, there is a problem in that it is necessary to operate the operation handle in order to move in and out, which makes the work troublesome.

[0007]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, the features of which will be described with reference numerals of embodiments described later in parentheses. To show, the furniture moving device of the present invention is a moving device (1) mounted on the furniture bottom, and comprises a lifting body (6) and a spring.
(13) and a locking tool (7), and the lifting body (6) is provided with a moving grounding body (16) at the lower end. With stop (10), spring (13)
Urges the lifting body (6) downward, and the locking tool (7) causes the furniture bottom part equipped with the lifting body (6) to be repeatedly moved up and down to lock the locked portion (10) of the lifting body (6). ) To lock the lifting body (6) in the furniture support position where the moving grounding body (16) projects below the furniture bottom surface, and the retracted position allowing the grounding of the furniture bottom surface. It is characterized in that it is alternately switched to a state in which the lifting body (6) can be raised.

The moving device (1) can be installed inside the four legs of the chair (20), the lower ends of the two legs (21) on the back side, and the bottoms of the four corners of the furniture (30).

An outer cylinder body (31) is fixed to the bottom of the furniture (30), and an inner cylinder body (32) is screw-fitted to the outer cylinder body (31) so that the height of the outer cylinder body (31) can be adjusted. The rotation operating part (33) can be formed, and the moving device (1) can be installed inside the inner cylindrical body (32).

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. 1 to 6, reference numeral 21 is a back leg of the chair 20, and the moving device 1 is installed at the lower end portion thereof. A mounting hole 2 that opens to the lower end surface is formed at the lower end portion of the leg 21, and a cylindrical body 3 having a bottom plate portion 4 that also serves as a mounting flange integrally formed at the lower end is fitted and fixed in the mounting hole 2. 3 is closed by a top plate 5 fixed to its upper end. An intermediate block 8 that supports the lifting body 6 so as to be able to move up and down and rotatably supports the locking tool 7 is fixed to a middle portion of the cylindrical body 3 with screws 9 in the vertical direction.

A spring holding hole 6 is formed on the upper end surface of the lifting body 6.
a is perforated and a screw hole 6b is formed at the lower end.
Further, a locked portion 10 composed of a rectangular cutout is formed on one side surface of the lifting body 6 on the side where the locking tool 7 is arranged, and the locking tool 7 is provided from one side of the upper end of the lifting body 6. A stopper piece 11 is provided so as to project upward, and an operation protrusion 12 having a triangular cross section is provided so as to protrude from the lower surface of the tip of the stopper piece 11.

A spring 13 for urging the elevating body 6 in the descending direction is accommodated in the spring holding hole 6a of the elevating body 6.
The upper end is in contact with the top plate 5. On the lower surface of the top plate 5, a projection 5a is provided which is fitted to the upper end of the spring 13 to prevent the spring 13 from being displaced.

The locking tool 7 has a pin 14 extending through the central position.
Is composed of a substantially rectangular parallelepiped member rotatably supported by the intermediate block 8, V-shaped notches are formed on both end faces thereof, and triangular engaging protrusions 7a are formed at four corners.
The locking tool 7 has a parallel side surface along the longitudinal direction thereof which can slidably contact one side surface of the lifting body 6 when facing up and down, and when the lifting body 6 rises when facing diagonally, the locked portion 10
The engaging projection 7a is configured to be locked to the upwardly facing step surface 10a below. Further, when the lifting / lowering body 6 descends when the locking tool 7 is oriented in the vertical direction, the operation projection 12
Engages with the engaging protrusion 7a to incline the locking tool 7 obliquely,
When the lifting / lowering body 6 descends when the locking tool 7 is in an oblique posture, the downward step surface 10b above the locked portion 10 and the lower ends of the operation protrusions 12 cause both ends of the parallel side surface of the locking tool 7 to move. The locked portion 10 and the operation projection 12 are formed so as to engage with each other and bring the locking tool 7 into a horizontal posture. Of the engaging projections 7a at the four corners of the locking tool 7, a pair of diagonally engaging engagement projections 7a are alternately engaged with the upward step surface 10a below the locked portion 10 and the operation projection 12. To meet.

A holding case 17 holding a moving grounding body 16 having a freely rotatable sphere 15 is abutted on the lower end of the lifting body 6, and a mounting screw 17a projectingly provided on the upper end thereof. It is screwed and fixed to the screw hole 6b. Further, the outer peripheral surface of the holding case 17 is loosely fitted to the inner peripheral surface of the tubular body 3, and the load in the horizontal direction is directly received by the tubular body 3.

When the chair 20 constructed as described above is moved, as shown in FIG. 6 (a), the back portion of the chair 20 is pulled up as shown by the arrow to separate its legs 21 from the floor surface. Then, as shown in FIG. 1A, the lifting / lowering body 6 is pushed up to the raised position by the weight of the chair 20 against the biasing force of the spring 13, and the moving grounding body 16 retracts into the tubular body 3. As shown in FIG. 1 (b), the stopper 7 is pushed by the spring 13 from the state in which the stopper 7 is in contact with one side surface of the elevating body 6 in a vertically oriented posture. As the lifting body 6 descends to the position where it engages with 11,
The engaging projection 7 of the locking tool 7 is attached to the operation projection 12 of the stopper piece 11.
The engagement of a causes the locking tool 7 to be in a posture in which the locking tool 7 is inclined. At this time, the moving grounding body 16 largely projects from the lower ends of the legs 21 as the lifting body 6 descends.

Next, the chair 2 that has been lifted from that state
When the back of No. 0 is lowered, as shown in FIG. 2 (a), the moving grounding body 16 contacts the floor surface, and the lifting body 6 is pushed up against the biasing force of the spring 13 by the weight of the chair 20. Since the locking tool 7 is in an oblique posture, the engaging projection 7a of the locking tool 7 engages with the upward step surface 10a below the locked part 10 in the middle thereof, and Further rise is blocked. At this time, the moving grounding body 16 projects from the lower end surface of the leg 21, and the spherical body 15 is in a state of being rollable on the floor surface.

Therefore, as shown in FIG. 6B, the chair 2
By tilting the back part of 0 to the rear and lifting the front leg 22 from the floor surface, the chair 20 is supported on the floor surface via the moving grounding body 16, and in that posture, the chair 20
By pushing or pulling in a desired direction, the sphere 15 of the moving grounding body 16 can be easily moved with little resistance and without damaging the floor surface.

When the chair 20 is moved to a desired position, then, as shown in FIG. 2 (b), the back portion of the chair 20 is pulled up again and the legs 21 thereof are separated from the floor surface as indicated by the arrow.
Then, the urging force of the spring 13 lowers the lifting / lowering body 6 to a position where the locking tool 7 engages with the stopper piece 11, but at that time, since the locking tool 7 is in an oblique posture, the upper part thereof is The parallel side surface engages with the operation projection 12 of the stopper piece 11 so that the locking tool 7 is in a horizontal posture, and both ends of the parallel side surface are located on the downward step surface 10b above the locked portion 10 and the operation projection 12. When they are engaged, the elevating body 6 stops descending at that position.

Next, the chair 2 that has been lifted from that state
When the back of 0 is lowered, as shown in FIG. 3, the moving grounding body 16 contacts the floor surface, and the lifting body 6 is pushed up against the biasing force of the spring 13 by the weight of the chair 20, and at this time. Since the locking tool 7 is in the horizontal posture, when the end portion of the parallel side surface of the locking tool 7 engages with the upward step surface 10a below the locked portion 10, the locking tool 7 rotates without resistance. The parallel side surfaces are in a posture along one side surface of the lifting / lowering body 6, slide along the one side surface of the lifting / lowering body 6, the lifting / lowering body 6 ascends as it is, and returns to the state of FIG. At this time, the locking tool 7 has rotated half a turn, and the above operation is repeated.

Thus, according to this embodiment, the chair 20
By pulling up the back part of the
Can be easily moved by projecting the lower end of the leg 21 from the lower end of the leg 21, and then the moving grounding member 16 can be retracted to the lower end of the leg 21 by pulling up the back of the chair 20 again. Only when necessary, the moving grounding body 16 can be projected and moved by a simple operation.
In addition, the moving device 1 can be configured compactly, and the thin legs 21
It can also be installed by embedding it in the lower end of the.

In the above description, an example of the chair 20 which can be moved while tilted to the back side is shown, but in the case of the relatively large furniture 30 which is difficult to move while maintaining such a posture,
As shown in FIG. 7, the moving device 1 may be installed in the four corners of the bottom of the furniture 30. In this case, when moving
As shown in (a), the upper part of the furniture 30 is pushed and tilted to one side to project the moving grounding body 16 of the moving device 1 on one side, and then the furniture 30 is tilted to the other side as shown in FIG. By projecting the moving ground member 16 of the moving device 1, the moving ground member 16 of the moving device 1 is entirely projected as shown in FIG. 7C, and the furniture 30 can be easily moved in this state. After the movement, the movement grounding body 16 can be retracted by performing the same operation again, and the furniture 3
0 can be installed stably.

In the above embodiment, the moving device 1 is directly mounted on the bottom of the furniture, but as shown in FIG. 8, the outer cylinder 31 is fixed to the bottom of the furniture, and the outer cylinder 31 is fixed. On the other hand, the inner tubular body 32 corresponding to the tubular body 3 is height-adjustably fitted with a screw, and the rotation operation portion 33 is formed at the lower end thereof. , Spring 1
3, the components of the moving device 1 such as the moving grounding member 16 may be installed.

According to this embodiment, the rattling of furniture can be prevented by adjusting the height of the inner cylinder 32 even when the floor surface is uneven, and the moving device installed in the inner cylinder 32 can be prevented. With 1, the furniture can be moved easily, and both functions of preventing rattling and moving easily can be provided. .

In the above embodiment, the movable grounding body 16 is provided with the freely rotatable sphere 15, but the present invention is not limited to this, and the wheels, rollers, and
A caster (free wheel), a sled for sliding, or the like can also be used.

[0025]

The furniture moving apparatus of the present invention can be implemented as described above, and when the bottom of the furniture is pulled up, the elevating body descends due to the urging force of the spring and the lower end of the furniture moves. Even if the body protrudes and the bottom of the furniture is lowered in that state, the locking tool engages with the locked portion of the lifting body and the protruding state of the moving grounding body is maintained, so that the furniture can be moved easily. Then, after moving the furniture again, pulling up the bottom of the furniture again allows the lifting body to move up due to the action of the locking tool, so that the moving grounding body can be retracted to the bottom of the furniture, which is an extremely simple operation. The furniture can be easily moved by projecting the moving grounding body only when necessary. Further, since the moving device is mainly composed of the lifting body, the spring, and the locking device, it can be configured inexpensively and compactly, and can be embedded and mounted in the lower end portion of a thin leg such as a chair,
It can be applied to any furniture.

In the case of a chair that is small and can be moved in a state of being tilted to the back side, a moving device may be installed only in the legs on the back side, and the required functions can be secured at low cost. You can

On the other hand, when it is difficult to move while maintaining the tilted state, such as large furniture, if a moving device is installed at the bottom of the four corners, it can be moved at the four corners of the furniture by alternately lifting each side. The grounding body can be projected and can be moved easily.

If the inner cylinder is screwed into the outer cylinder so that the height of the inner cylinder can be adjusted and the moving device is installed in the inner cylinder, the height of the inner cylinder can be adjusted even if the floor surface is uneven. The rattling of the furniture can be prevented, and the moving device installed in the inner cylinder can easily move the furniture, so that both functions of preventing rattling and moving easily can be provided.

[Brief description of drawings]

FIG. 1 shows a furniture moving device according to an embodiment of the present invention,
(A) is a vertical sectional front view in which the lower ends of the legs are in contact with the floor surface, and (b) is a vertical sectional front view in which the legs are lifted from the floor surface.

2A and 2B show a usage state of the furniture moving apparatus of the embodiment, FIG. 2A is a vertical cross-sectional front view showing a state in which a moving grounding body is projected and is grounded on the floor surface, and FIG. It is a vertical cross-sectional front view of the state lifted from the surface.

FIG. 3 is a vertical cross-sectional front view showing a state in which the moving grounding body can be retracted in the furniture moving apparatus of the embodiment.

FIG. 4 is a cross-sectional plan view taken along the line AA of FIG.

5 is a cross-sectional plan view taken along the line BB of FIG.

FIG. 6 is an explanatory view of a use state of the chair in which the furniture moving device of the embodiment is installed.

FIG. 7 is an explanatory diagram of a usage state when the furniture moving device of the embodiment is applied to large-sized furniture.

FIG. 8 is a vertical sectional front view of another embodiment of the furniture moving apparatus of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Moving device 6 Elevating body 7 Locking tool 10 Locked part 13 Spring 16 Grounding body for movement 20 Chair 21 Legs on the back side 30 Furniture 31 Outer cylinder 32 Inner cylinder 33 Rotation operation part

Claims (4)

[Claims] 1. A moving device (1) mounted on the bottom of furniture, comprising a lifting body (6), a spring (13) and a locking tool (7), wherein the lifting body (6) is at the lower end. Equipped with a moving grounding body (16),
It is supported on the furniture bottom so that it can be raised and lowered within a certain range, and
0), the spring (13) urges the elevating body (6) in the downward direction, and the locking tool (7) is the elevating body by repeating the elevating and lowering of the furniture bottom equipped with the elevating body (6). A state in which the lifting body (6) is engaged with the locked portion (10) of (6) and is locked at a furniture support position where the moving grounding body (16) projects below the furniture bottom surface; A furniture moving device that alternately switches to a state in which the lifting body (6) is allowed to rise to the retracted position in which the floor of the furniture is allowed to touch the ground. 2. The back leg of the four legs of the chair (20)
2. The furniture moving device according to claim 1, wherein the moving device (1) is installed at the lower end of the (21). 3. The furniture moving device according to claim 1, wherein the moving device (1) is installed at the bottom of the four corners of the furniture (30). 4. An outer cylinder body (31) fixed to the bottom of the furniture (30),
The inner cylinder body (32) is screw-fitted to the outer cylinder body (31) in a height-adjustable manner, and the moving device (1) is provided inside the inner cylinder body (32).
The furniture moving device according to any one of claims 1 to 3, wherein the rotating operation part (33) is formed at a lower end of the inner cylindrical body (32).