JPH09327344A - Leg device for furniture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To keep furniture unmoving by providing a movable body within a cylindrical holder formed in the housing part of a leg member, energizing a main ball at the lower end of the movable body via an elastic body for displac ing the leg member downward together with the holder, and causing an antiskid member to come in contact with a floor, upon the occurrence of the displace ment of the leg member. SOLUTION: A cylindrical housing part 16 with an open lower edge is formed on a leg member 15, and a cylindrical holder 26 with an open lower side is internally coupled to the housing part 16, so as to be detachable. Also, a cylindrical movable body 27 is slidably housed in the holder 26, and a main ball 31 is housed and retained in a holding part 29 on the lower edge of the movable body 27. In addition, the holder 26 is internally provided with a spring 35 for energizing the movable body 27 downward. Also, the main ball 31 is elastically projected from the lower edge of the holder 26, and the holder 26, when subjected to a load for causing the compressed deformation of the spring 35, descends, and the lower edge thereof comes in contact with a floor. In this case, furniture becomes unmoving, due to an antislipping member 21 attached to the lower edge of the holder 26.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a furniture leg device for movably supporting furniture such as sofas and beds.

[0002]

2. Description of the Related Art For example, furniture such as a sofa or a bed that can be moved is provided with a caster device on its lower surface so that the caster can be moved easily. A conventional caster device has a metal fitting attached to the lower end of furniture, a roller is rotatably attached to the metal fitting, and a stopper for preventing the rotation of the roller is provided. When it is desired to make the furniture immovable at a predetermined position, the stopper is operated to prevent the roller from rotating.

However, in the furniture using such a caster device, when it is desired to use the furniture in a state where the movement of the furniture is blocked, the stopper must be operated each time. Therefore, the operation of the stopper may be troublesome. In addition, furniture may be moved during use by forgetting to operate the stopper or using it without intentional operation.

Further, since the caster device of the ordinary type has a roller rotatably mounted on a metal fitting attached to the lower surface of the furniture, it can be attached to the lower surface of furniture such as a bed or a sofa. When exposed to the outside, the appearance of the furniture could be greatly impaired.

[0005]

When furniture is made movable by the caster device as described above, the caster device provided below the furniture must be operated in a locked state when the furniture is used in a stationary state. , It may be difficult to use, it may be used without operating the stopper, and if the caster device is locked, you must unlock it to make it movable. There are things that must be done.
Further, if the caster device is exposed to the outside, it may be unfavorable in appearance.

The present invention has been made in view of the above circumstances. The object of the present invention is to make an object immovable by applying a predetermined load such as furniture or a user without a lock operation. It is an object of the present invention to provide a furniture leg device that can be moved and can be moved only by removing the load of the user and that does not significantly impair the appearance.

[0007]

According to a first aspect of the present invention, there is provided a leg device for furniture which is attached to furniture and movably supports the furniture. A leg member to be attached, a holder formed in a tubular shape with an open lower surface and detachably accommodated in the accommodating portion of the leg member, a movable body movably provided in the holder, and a lower end of the movable body. The main ball rotatably provided on the side and the main ball elastically holding the movable body.
Provided on the lower surface of the leg member, and an elastic body for urging the leg member in a direction projecting from the lower surface opening of the holder and compressing the load applied to the leg member to displace the leg member downward together with the holder. The holder is provided with a non-slip member that comes into contact with the ground when the holder is displaced downward.

According to a second aspect of the invention, in the invention of the first aspect, a cap for covering the lower surface of the leg member is detachably attached to the lower surface of the leg member when the holder is removed from the accommodating portion of the leg member. It is characterized by being attached to.

According to the first aspect of the present invention, when no load is applied to the holder via the leg members, the main ball projects from the lower end surface of the holder and comes into contact with the floor surface so that the main ball is movable and the load is applied to the holder. When is added, the main ball relatively enters into the holder, and the anti-slip member provided on the lower surface of the holder comes into contact with the floor surface, so that the movement is blocked. Moreover, since the holder is accommodated in the accommodating portion of the leg member, it is not exposed to the outside and has a good appearance. Claim 2
According to the invention, by removing the holder from the accommodating portion of the leg member and attaching the cap, it can be used as a normal leg having no caster function.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described below. 1 to 3 show a first embodiment of the present invention,
FIG. 3 shows a bed 1 as furniture. This bed 1 has a base 2 as a furniture body. The base 2 is formed by connecting a headboard 4 to one end in the longitudinal direction of a pair of side plates 3 (one shown) spaced apart in parallel and a footboard 5 to the other end.

A receiving bar 6 is provided on the inner surface of each side plate 3 over substantially the entire length in the longitudinal direction, and a floor plate 7 is provided on the pair of receiving bars 6.
Are mounted with both ends in the width direction engaged. The floor board 7 is divided into two pieces in the longitudinal direction of the base 2. A mattress 10 is placed on the floor plate 7. The side plate 3, the head board 4, and the foot board 5
The connection with and is made by the connecting plate 11 bent in an L shape shown in FIG. That is, one side of the connecting plate 11 is joined to the inner surface of the side plate 3, the other side is joined to the inner surface of the head board 4 or the foot board 5, and each side of the connecting plate 11 and each board 4, 5 and 5 are screwed together.

Mounting members 14 provided with nuts 13 are provided at the four corners of the base body 2.
A main body 15a of the leg member 15 is attached to a middle portion of the. That is, as shown in FIGS. 1 (a) and 1 (b), the main body 15a is provided with a columnar accommodating portion 16 whose upper end surface is closed and whose lower end surface is open. The collar portion 17 is integrally molded.

A bolt 18 is provided by embedding a head portion 18a in a central portion of an upper wall that closes the upper portion of the accommodating portion 16, and a projecting hole 19 is formed at a side of the bolt 18. Further, the mounting member 14 is formed with a through hole 14a at a position facing the protruding hole 19. The leg member 15 is attached to the lower surface of the base 2 of the bed 1 by screwing a bolt 18 provided on the upper wall of the leg member 15 into the nut 13 of the attachment member 14.

A first annular groove 19 is formed on the lower surface of the collar portion 17.
A and a second annular groove 19b are formed on the outside thereof. A non-slip member 21 such as a rubber ring is provided in the first annular groove 19a with a part thereof protruding downward from the lower surface,
The cap 22 is attached to the second annular groove 19b.

As shown in FIG. 2, the cap 22 has a plate-shaped portion 22a for covering the lower surface of the collar portion 17, and the plate-shaped portion 22.
A cylindrical portion 22b provided on the upper surface of a and inserted into the accommodating portion 16 of the main body 15a, and a locking portion 22c formed in the peripheral portion of the plate-shaped portion 22a and engaging with the second annular groove 19b.
And a recess 22d for accommodating the anti-slip member 21.

Therefore, by attaching the cap 22 to the lower surface of the main body 15a, the leg member 15 is fixed to the cap 22.
The plate-shaped portion 22a allows the floor surface to be grounded in a smooth state.

The housing portion 16 of the leg member 15 is shown in FIG.
As shown in (a) and (b), a cylindrical holder 26 having an open lower surface is detachably inserted. That is, the holder 2
6 has an outer diameter dimension slightly smaller than the inner diameter dimension of the accommodating portion 16, and the outer peripheral surface thereof has the accommodating portion 1
The inner peripheral surface of 6 has a slight contact resistance.

The holder 26 accommodated in the accommodating portion 16 has a rod-shaped body (not shown) protruding from the upper surface of the leg member 15 through the through hole 14a of the mounting member 14 so as to project the upper surface thereof. It can be removed from 16.

The leg member 15 can be removed from the mounting member 14 and the holder 26 can be pulled out from the accommodating portion 16. In that case, the mounting member 14 does not need to have the through hole 14a.

Inside the holder 26, a columnar movable body 27 made of an elastic material such as synthetic resin is slidably accommodated. A spherical holding portion 29 is formed on the lower end surface side of the movable body 27, and the holding portion 29 accommodates and holds a main ball 31 formed of hard synthetic resin or rubber.

The inner diameter of the portion of the holding portion 29 opened to the lower end surface of the movable body 17 is set to be slightly smaller than the diameter of the main ball 31. Then, the main ball 31 is press-fitted into the holding portion 29 and held so as not to fall.

A part of the movable body 27 is the holding portion 29.
An annular accommodation groove 32 opened to the inside is formed. A large number of bearing balls 33 having a diameter sufficiently smaller than that of the main ball 31 are housed in the housing groove 32. Therefore,
The main ball 31 is rotatably supported by the bearing ball 33.

An elastic sheet 34 such as rubber or synthetic resin is provided on the inner surface of the upper end of the holder 26, and the movable body 27 is provided between the elastic sheet 34 and the upper end surface of the movable body 27. An elastic body such as a rubber or a spring for urging the spring is provided, and a spring 35 is provided in this embodiment.

Accordingly, the main ball 31 is held by the holder 26.
Elastically projecting from the lower end surface of the holder, and when a load that compressively deforms the spring 35 is applied to the holder 26, the load lowers the holder 26 so that the lower end surface comes into contact with the floor surface. There is.

When the bed 1 is provided with the four leg members 15, the total strength of the four springs 25 of the leg members 15 is slightly larger in the first state, which is almost the same as the load of the bed 1. Second state, or slightly smaller third
Is set to any of the states. In the first and second states, the spring 35 in the holder 26 housed in the leg member 15 is hardly compressed, and as a result, as shown in FIG. Since the protrusion 31 is provided, the bed 1 is movably supported by the rotatable main ball 31.

In the case of the third state, the spring 35 is compressed by the load of the bed 1, the holder 26 descends, and the main ball
Since the lock 31 is inserted into the holder 26, the anti-slip member 21 on the lower end surface of the holder 26 is in contact with the floor surface as shown in FIG. 1B, and the bed 1 cannot move freely. Therefore, in that case, the bed 1 may be lifted and moved.

Even in the second state, the holder 26
The anti-slip member 21 on the lower end surface of the spring may be in contact with the floor surface. In such a case, the bed 1 may be lifted and moved. However, compared with the case of the third state, the spring is used. Since 35 is strong, the bed 1 can be lifted with a light force.

According to the bed 1 using the leg member 15 having such a structure, only the load of the bed 1 is applied to the leg member 15 when the user is not lying on the mattress 10. In that case, if the strength of the spring 35 of the caster device 15 is set to the above-mentioned first state, the main ball 31 projects from the lower end surface of the holder 26 as shown in FIG. Therefore, the bed 1 can be freely moved.

When the user lies on the mattress 10 of the bed 1, the leg member 15 receives a load on the bed 1 and the user. When the load increases, the holder 26 descends together with the bed 1 while compressing the spring 35. Thereby,
The main ball 31 is relatively immersed in the boulder 26, as shown in FIG.
As shown in (b), since the anti-slip member 21 provided on the lower end surface of the holder 26 comes in contact with the floor surface, the main ball 3
The movement of the bed 1 by 1 is reliably prevented.

That is, the bed 1 can be freely moved by the main ball 31 when not in use, and the main ball 31 is automatically locked and moved when the load of the user is applied during use. It becomes impossible. Therefore, the user locks the rotation of the main ball 31 each time,
Since it is not necessary to perform an operation such as releasing the locked state, it is easy to use, and it is possible to prevent the bed 1 from moving during use while forgetting to lock it. Moreover, since the non-slip member 21 that grounds to the floor is provided on the lower end surface of the holder 26, the bed 1 when locked
Can be reliably prevented.

The load applied to the leg member 15 at the time of use differs depending on the weight of the user and the structure of the bed 1, for example, single size or double size. In this way, when the load applied to the leg member 15 changes, it can be dealt with by replacing the leg member 15 with a spring having a different strength.

There are cases where it is not necessary to move the bed 1 or where the leg member 15 is used for the bed 1 used in a fixed state, that is, it is desired to use it as a normal leg having no caster function. In such a case, as shown in FIG.
7, the holder 26 accommodating the main ball 21, the spring 25, the elastic sheet 24 and the like is removed, and the cap 22 is attached to the lower end surface of the holder 26. As a result, the cap 22 is grounded to the floor surface, so that the leg member 15 can be used as a normal leg having no caster function.

By attaching the cap 22 to the lower surface of the holder 26, the cap 22 contacts the floor surface in a smooth state, so that the floor surface is not damaged when the bed 1 is displaced.

In the above embodiment, when the cap 22 is attached to the lower surface of the holder 26, the movable body 27, the main ball 31, the spring 35, etc. provided in the holder 26 are removed. Alternatively, the spring 35 may be compressed and deformed to push the main ball 31 into the holder 26, and the cap 22 may be attached to the lower surface of the leg member 15.

The furniture is not limited to the bed, and may be a sofa or the like.
Moreover, the leg device of the present invention can be applied if it is required that the leg device does not move during use.

[0036]

As described above, according to the first aspect of the present invention, the leg member attached to the furniture is formed with the accommodating portion, and the accommodating portion holds the cylindrical holder whose lower end surface is open. Accommodates a movable movable body, a main ball rotatably provided on the lower end side of the movable body, and a spring elastically holding the movable body. Is provided with a non-slip member that grounds when the leg members are displaced downward due to compression.

Therefore, when the furniture is a bed or sofa and the furniture is not used, the main ball projects from the lower surface of the holder and is rotatable, so that the furniture can be easily moved. The spring is compressed by the load of the user at the time of use,
The main ball is relatively inserted into the holder, and the anti-slip member provided on the lower end surface of the leg member is grounded, so that the main ball is prevented from rotating and the furniture is not moved. Can be used in.

That is, when the leg members are provided with the caster function so that the furniture can be freely moved, there is no need for the conventional operations such as locking when in use and unlocking when not in use. The furniture can be used easily and surely, and the lock state can be surely maintained by the anti-slip member when not in use, so that the use state can be stabilized. Further, since the holder having the caster function is housed in the leg member, the caster portion is not exposed to the outside as in the conventional case, so that the appearance can be improved.

According to the second aspect of the invention, when the caster function of the leg member is unnecessary, the holder is taken out from the leg member and the cap is attached to the lower end surface of the leg member.
This leg member can be used as a normal leg. Therefore, when the caster function is not necessary, the leg member does not have to be replaced with another leg member, and the appearance is no different from that of a normal leg, so that the appearance is not deteriorated.

[Brief description of drawings]

1A and 1B are vertical sectional views of a caster device showing an embodiment of the present invention.

FIG. 2 is a sectional view of a bed as furniture.

FIG. 3 is a longitudinal sectional view of the caster device with a cap attached thereto.

[Explanation of symbols]

 15 ... Leg member 16 ... Accommodation part 22 ... Movable body 21 ... Skid prevention member 22 ... Cap 26 ... Holder 31 ... Main ball 35 ... Spring

Claims (2)

[Claims] 1. A furniture leg device attached to furniture for movably supporting the furniture, comprising: a leg member having an accommodating portion having an opening on a lower surface, the leg member being attached to a lower portion of the furniture; -Shaped holder that is detachably accommodated in the accommodating portion of the leg member, a movable body that is movably provided in the holder, and a main body that is rotatably provided at the lower end side of the movable body. And the movable member is elastically held to urge the main ball in a direction projecting from the lower surface opening of the holder and the leg member is compressed by the load applied to the leg member. A furniture leg device comprising: an elastic body that is displaced downward together with an anti-slip member that is provided on the lower surface of the leg member and that grounds when the holder is displaced downward. 2. The cap according to claim 1, wherein a cap that covers the lower surface of the leg member is detachably attached to the lower surface of the leg member when the holder is removed from the accommodating portion of the main body. Furniture leg device.