JPH08132811A - Bed leg - Google Patents

Abstract

PURPOSE: To switch the sliding state and fixed state with a simple structure by vertically moving a sliding member. CONSTITUTION: A leg body connecting member 12, a support member 13, and a sliding member 14 are integrally moved upward by the rotation of an adjusting nut 17 in the fixed state, a nonsliding fixed member 20 is kept in contact with the floor surface, and the position of a bed is fixed. When the adjusting nut 17 is rotated and the leg body connecting member 12, support member 13, and sliding member 14 are integrally moved downward via a screw body 11, the sliding member 14 is kept in contact with the floor surface, the nonsliding fixed member 20 is separated upward from the floor surface, the lower face of the jaw section 12b of the leg body connecting member 12 is brought into contact with the lower face of a circular recess 17c on the adjusting nut 17, and the further lift of the nonsliding fixed member 20 is blocked. The bed is supported by the sliding member 14 only, and it can be easily moved in an optional direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bed pedestal capable of easily sliding and moving a bed when necessary.

[0002]

2. Description of the Related Art There are times when it is desired to move the bed for cleaning and other purposes, but it is usually not easy to move the bed alone because the weight of the bed itself is large. In particular, it is difficult to move a bedridden person or a sick person while the bed is still on the bed. For this reason, casters are often used under the legs of the bed to facilitate the movement of the bed. However, casters use large-diameter wheels, which increases the height of the bed, and sometimes the wheels turn freely in the direction of movement and cannot be moved smoothly as desired, or when used at home. Since the contact area of the wheels is small (becomes linear), there are problems such as damage to the tatami mat and the floor, which is not always satisfactory.

[0003]

Therefore, the present invention is structurally very simple, the bed can be moved smoothly in the desired direction, and the mounting height can be suppressed to a low level. The object is to provide a bed leg seat that does not hurt the surface.

[0004]

In order to solve the above-mentioned problems, the present invention employs means for moving the bed not by rotating the casters but by sliding the ground contact surface of the legs of the bed. That is, according to the present invention, a shaft part that hangs down the shaft part and is continuously provided on a lower part of a leg of a bed, a sliding member in which a slidable grounding surface is formed at a lower end of the shaft part, and the sliding member are covered. Is fitted to the shaft part so that it can be moved up and down,
A leg seat body having a non-sliding ground surface formed at a lower end thereof, the ground surface being displaceable below the ground surface of the sliding member, and the leg seat body being moved up and down so as to be vertically displaced relative to the sliding member. There is provided a leg seat for a bed, which comprises a lifting means and a height adjusting member operable to vertically move the leg seat body by operating the lifting means.

[0005]

When the bed is to be moved, the adjusting member is swung in a predetermined direction so that the sliding member is displaced below the level of the non-slidable fixed surface fixed to the lower end of the leg seat body, As a result, the bed can be supported only by the sliding member, and in this state, the bed can be easily slid to move in any direction. If you want to fix the bed in place, rotate the adjusting member in the opposite direction to displace the sliding member above the level of the non-slidable fixed surface at the lower end of the leg seat body, thereby The bed is supported only by the leg seat body, so that the bed can be stably fixed at a predetermined position.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The bed leg seat of the present invention will be described below with reference to the illustrated embodiments. FIG. 1 shows a first embodiment of a bed leg seat attached to the lower part of the bed leg, particularly showing a state in which the position of the bed is fixed, and FIG. 2 shows the bed leg seat of FIG. FIG. 3 as viewed from above shows a state in which the position of the bed is moved in the bed leg seat of FIG.

This bed leg seat uses a screw forward / backward movement as a lifting / lowering means, and is provided with a screw body 11 projecting downward at the lower end thereof and connected to the lower portion of the leg body of the bed. Leg connecting member 12, a pillar member 13 protruding downward from the lower end of the screw body 11, and a sliding member 14 detachably fitted to the lower end of the pillar member 13.
And an adjusting nut 17 which is provided so as to be screwed with the screw body 12 so as to be rotatable around the screw body 12 and which has a fitting projection 16 for forming an annular groove 15 on the circumferential surface and which projects on the lower surface. Leg seat body 1 having an engaging portion 18 that engages with the joint projection 16
9 and a non-slidable fixing member 20 fixed to the lower end of the leg seat body 19.

More specifically, a thread groove 12a is formed on the peripheral surface of the screw body 11 of the leg body connecting member 12, and the thread groove 12 is formed.
The upper end of a has a flange portion 12b that projects in the circumferential direction. The column member 13 coaxially protrudes downward at the lower end of the screw body 11, and an annular groove 13a is formed on the peripheral surface near the protruding end.

The outer peripheral surface of the sliding member 14 is recessed in the center 14
It has a substantially hemispherical shape in which a is formed, and a support member 1
A cylindrical body 14b into which 3 is inserted is projected upward, and an annular rib 14c provided on the inner surface of the cylindrical body 14b is fitted into the annular groove 13a of the supporting column member 13 so that the cylindrical body 14b is fixed to the supporting column member 13. Further, it can be detached from the column member 13 by releasing the fitting with the annular groove 13a. Further, the sliding member 14 has a lower surface (grounding surface) which is made of a plate, synthetic resin, or the like, and is subjected to a lubrication treatment such as Teflon processing so that it can be easily slipped against a floor or a fold, or the whole is made of a material having a high smoothness. ing.

The adjusting nut 17 has a substantially cylindrical shape (note that
In the illustrated example, the inner cylindrical body and the outer cylindrical body are integrated with each other, and the thread groove 12 on the peripheral surface of the screw body 11 is formed on the inner wall surface.
A screw groove 17a that is screwed with a is formed, and the screw body 11 can be moved up and down by rotating around the screw body 11. In order to facilitate the rotation of the adjusting nut 17, for example, four arm-shaped protruding portions 17b extending in directions different from each other by 90 degrees may be provided as shown in FIG. A circular recess 17c is formed on the upper surface of the adjusting nut 17 so as to fit with the flange portion 12b at the upper end of the screw groove 12a, and a fitting projection 16 forming an annular groove 15 on the outer peripheral surface is provided on the lower surface so as to project downward. Has been done.

The leg seat body 19 has a tubular shape (or a substantially eight-shaped cross section) that expands downward, is provided below the adjusting nut 17 so as to cover the sliding member 14, and its upper edge portion is provided. An annular engaging portion 18 that extends horizontally inward
The annular engaging portion 18 is slidably engaged with the annular groove 15 of the fitting projection 16 of the adjusting nut 17. That is, the adjusting nut 17 can freely rotate on the annular engaging portion 18. In order to smoothly rotate the adjusting nut 17, a plurality of steel bearing balls 21 may be annularly interposed between the lower surface of the adjusting nut 17 and the upper surface in the vicinity of the annular engaging portion 18 as illustrated. .

The non-slidable fixing member 20 is composed of an annular block made of a non-slip material such as soft resin or rubber, and is fixed from the lower end of the leg seat body 19 to the inner surface thereof. As shown in the figure, the non-slidable fixing member 20 may have an uneven lower surface 20a in order to make it less slippery.

Next, the operation of the bed leg seat having the above structure will be described. In the state of FIG. 1, the leg connection member 12 and the support member 13 are rotated by the rotation of the adjustment nut 17.
And the whole of the sliding member 14 is integrally moved upward, so that the non-slidable fixing member 20 is in contact with the floor surface so that it is difficult to slip and the position of the bed is fixed.

When it is desired to move the position of the bed from this fixed state, first, the adjusting nut 17 is rotated in a predetermined direction, and the leg connecting member 12, the strut member 13, and the sliding member 14 via the screw body 11. Starts to move integrally downward, the sliding member 14 contacts the floor surface 22, and the non-slidable fixing member 20 is separated upward from the floor surface, and at the same time, the lower surface of the collar portion 12b of the leg connecting member 12 is removed. By contacting the lower surface of the circular recess 17c on the upper surface of the adjusting nut 17, the non-slidable fixing member 20 is prevented from further rising. As a result, the bed is supported only by the sliding member 14, so that the bed can be easily moved in any direction by simply pushing.

After moving the bed to the predetermined position,
The bed can be fixed at a predetermined position by rotating the adjusting nut 17 in the opposite direction to raise the sliding member 14 again and returning it to the state of FIG.

FIG. 4 shows a second embodiment of the bed leg seat. This bed leg seat shows a different embodiment in which the leg seat body, which is biased upward by a spring, is vertically displaced by a cam, instead of the structure in which the leg seat body 19 is moved up and down by screwing back and forth. That is, the leg connecting member 12 has the collar portion 12b.
Has a small diameter at its lower portion, a hollow shaft portion 12c protrudes, and a sliding member 14 serving as a shoe is fixed to the tip. In the illustrated example, the sliding member 14 is capped at its lower end with a slippery cap whose outer surface serves as a sliding contact surface.

An adjusting member 27 serving as a handle is pivotally fitted to the shaft portion 12c below the collar portion 12b. Further, the leg seat body 19 is composed of a truncated cone-shaped cylindrical body that expands downward, and a non-slidable fixing member 20 is fitted and fixed in an annular shape along the outer periphery at the lower side.

The lower edge of the adjusting member 27 on the center side is shown in FIG.
A cam surface 270 showing a main part is formed. The cam surface 270 is formed by a surface that is vertically concave and convex, and the concave portion 2
The side from 71 to the convex portion 272 is obliquely inclined. The top surface 19a of the leg seat body 19 that is biased upward abuts on the cam surface 270. That is, the coil spring S is externally fitted to the shaft portion 12c in a compressed state between the inner hollow side rear surface of the top surface 19a of the leg seat body 19 and the upper end surface of the leg seat body 19.

Because of the above-mentioned structure, the adjusting member 2
When the concave portion 271 is aligned with the top surface 19A of the leg seat body 19 by turning 7 by a predetermined angle, the leg seat body 19 is lifted by the biasing force of the coil spring S and its bottom surface is displaced to a position above the bottom surface of the sliding member 14. Therefore, only the bottom surface of the sliding member 14 is in contact with the floor surface. This allows the slide member 14 to slide on the installation surface. On the contrary, the adjusting member 27 is further swung by a predetermined angle so that the convex portion 272 is attached to the leg seat body 1.
When it is aligned with the top surface 19a of 9, the leg seat body 19 is pushed down by the convex portion 272, and the bottom surface thereof is displaced below the bottom surface of the sliding member 14. As a result, the bottom surface of the sliding member 14 is held hollow, and only the bottom surface of the leg seat body 19 is grounded.

In the present invention, the structure for vertically moving the leg seat body up and down with respect to the sliding member is not limited to the above-mentioned embodiment, and a known lifting means can be used. Other,
In short, it goes without saying that various design changes can be made without changing the gist of the present invention.

[0021]

As described above in detail, according to the bed leg seat of the present invention, it is structurally extremely simple because the sliding member is simply moved up and down. It can be fixed stably. Also, the mounting height can be kept low, and the height of the bet can be set low. Also, unlike casters, the contact area with the installation surface is large, so even when used at home, it is difficult to damage the floor or tatami mats. Furthermore, the bed can be moved easily and smoothly, and particularly when it is moved over a short distance, it is possible to slide the bed more stably than the casters, which is extremely useful.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of a bed leg seat according to a first embodiment of the present invention in a state where the bed position is fixed.

FIG. 2 is a plan view of the bed leg seat shown in FIG. 1 when viewed from above.

FIG. 3 is a cross-sectional view of main parts when the position of the bed of the bed leg seat shown in FIG. 1 is moved.

FIG. 4 is a sectional view of a bed leg seat according to a second embodiment.

FIG. 5 is a partial view illustrating a cam surface.

[Explanation of symbols]

 11 ... Screw body 12 ... Leg connection member 13 ... Strut member 14 ... Sliding member 15 ... Annular groove 16 ... Fitting protrusion 17 ... Adjusting nut 18 ... Engaging portion 19 ... Leg seat body 20 ... Non-slidable fixing member 21 ... Steel bearing balls

Claims (3)

[Claims] 1. A shaft part which hangs down the shaft part and which is connected to a lower part of a leg of a bed, a sliding member having a slidable grounding surface formed at a lower end of the shaft part, and a covering the sliding member. A leg seat body that is fitted to the shaft portion so as to be able to move up and down, has a non-slipping ground surface formed at its lower end, and the ground surface can be displaced below the ground surface of the sliding member, and the leg seat body serves as the sliding member. A bed characterized by comprising an ascending / descending means for moving up and down so as to displace vertically, and a height adjusting member operable to actuate the ascending / descending means to displace the leg seat body vertically. Leg seat. 2. The elevating / lowering means includes a screw engraved on the shaft portion, and an adjusting member having a screw threadedly engaged with the screw on an inner circumference thereof.
The bed leg seat according to claim 1, comprising a leg seat body pivotally connected to the adjusting member. 3. The elevating means comprises a spring for urging the leg seat body upward, and a cam means formed on an abutting surface between the adjusting member and the leg seat body to displace the leg seat body downward. The bed leg seat according to claim 1, wherein