JPH07313302A - Bed equipment - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a bed apparatus capable of undulating the legs supporting the base body by a simple operation. A leg body (5) having an upper end pivotally attached to the lower surface side of a base body (1) by its own weight so as to be rotatable in the standing direction, and a leg body (5) formed on one side of the leg body in the vertical direction and at the upper end side The engaging recess 8 toward the turning direction due to the weight of the leg.
a slide groove 8 in which a is continuously provided, a support link 11 having one end pivotally attached to a portion spaced apart by a predetermined dimension from a portion where the upper end of the leg of the base body is pivotally attached, and the other end of the support link. Stopper pin 13 fixed to the slide part and slidably inserted into the slide part, and an intermediate part rotatably connected to one side of the leg body and one end corresponding to the engaging recessed part of the upper end part of the slide part. Lever 14 with a guide formed on the bottom
And other features.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bed apparatus having a base body and legs provided on the base body so that the legs can be folded.

[0002]

2. Description of the Related Art The convenience of a bed apparatus, such as a bed apparatus for nursing, which can be stored under another bed apparatus when not in use is well known. In other words, this type of bed device has a base (bed frame).
The leg body supporting the bed is foldably provided, and when not in use, the leg body is folded to have a flat shape so as to be accommodated under the base of another bed apparatus. Therefore, such a bed apparatus is very convenient because it does not occupy the indoor space and obstructs it when not in use.

In such a bed apparatus, the operability of the legs, that is, the operation of raising or lowering the legs must be easy, and the support structure for the legs is simple and reliable. Must be one.

Therefore, the applicant of the present application is the Japanese Utility Model Publication No. 55-427.
A bed device shown in Japanese Patent No. 65 has been proposed. In the bed apparatus shown in this publication, legs are pivotally attached to the lower surface side of the bed frame. When the leg is lying down, by lifting the bed frame, the leg rotates in the upright direction, and the engaging protrusion provided on the leg at a predetermined angle is located on the bed frame side. It is adapted to engage with the provided engaging portion.

In this way, when the leg body held in the upright state is toppled, the engaging projection must be disengaged from the engaging portion. Therefore, the bed frame is provided with a pressing portion for releasing the engagement, and the lever for driving the pressing portion can drive the pressing.

Therefore, if the lever is operated while slightly lifting the bed frame, the pressing portion presses the engaging projection to disengage it from the engaging portion, so that the bed frame is maintained while maintaining the operating state of the lever. If the arm is lowered, the leg can be laid down by the lowering.

However, according to such a configuration,
When lying down on the legs, not only the bed frame must be lifted, but also the lever must be operated. for that reason,
Since the bed frame must be lifted with one hand and the operating lever must be operated with the other hand, it has been sometimes difficult for a weak person to lift the bed frame with one hand.

Further, when the lever is operated, it is necessary to provide a mechanism capable of pressing the engaging projection provided on the leg body by the operating force thereof, which leads to a complicated structure. There were things.

[0009]

As described above, in the conventional bed apparatus, not only the operation is difficult when the standing leg is toppled, but also the structure is relatively complicated. It was The present invention has been made based on the above circumstances, and an object of the invention is to have excellent operability not only when the leg is erected, but also when it is laid down, and the configuration therefor can be simplified. It is to provide a bed apparatus that can be used.

[0010]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a bed apparatus capable of changing the support height of a base on which a mattress is placed, by means of its own weight on the lower surface of the base. A leg whose upper end is pivotally attached so as to be rotatable in the standing direction, and a leg formed on one side of the leg along the vertical direction and directed toward the direction of rotation by the weight of the leg on the upper end side. And a support link whose one end is pivotally attached to a portion of the base body which is separated from the upper end of the leg body by a predetermined distance from the slide portion. A stopper member fixed to an end portion and slidably inserted into the slide portion, and one end of the upper end portion of the slide portion corresponding to the engaging recess at an intermediate portion rotatably connected to one side of the leg body. Lever with guide part The lever is rotated so that the guide portion projects into the slide portion when the leg body falls down and the stopper member slides to the lower end portion of the slide portion. When the body is rotated in the upright direction and the stopper member slides the slide portion in the ascending direction, the guide member protruding to the slide portion guides the stopper member to the engaging recess, and the stopper member It is characterized in that the guide portion is rotated so as to retract from the slide portion.

[0011]

According to the bed apparatus having the above structure, when the base is lifted and the leg is rotated in the standing direction by its own weight, the stopper member is guided by the guide portion of the lever and engages with the engaging concave portion of the slide portion. Since it fits, it is possible to hold the leg in the standing state.

When the legs are in the upright state, if the base body is slightly lifted and lowered, the guide portion is retracted from the slide portion, so that the stopper portion is engaged with the engagement concave portion. Since it can be slid along the slide portion without moving, the legs can be laid down.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The bed apparatus shown in FIG. 3 has a mattress M on the upper surface.
Is provided with a rectangular frame-shaped substrate 1. The base 1 is formed by connecting end members 3 to both ends of a pair of side members 2 in the longitudinal direction. Fixing fittings 4 are attached to the inner surfaces of both ends of the side member 2 in the longitudinal direction, respectively. That is, a total of four fixtures 4 (only two are shown) are attached to the base 1.

An upper end of a leg 5 is rotatably connected to one end of the fixing tool 4 by a pin 6. The leg 5
As shown in FIGS. 1 and 2 (a), (b), a substantially cylindrical leg link 6 in which an opening 6a is formed on one side over substantially the entire length in the longitudinal direction and the other three sides are closed, and this One side 7a is fixed to the leg link 6, and the other side 7b is formed of a side face where the opening 6a of the leg link 6 is formed and a cover member 7 facing the side face 6b adjacent thereto.

A slide groove 8 as a slide is formed on the side surface 6b of the leg link 6 along the longitudinal direction thereof. At the upper end of the slide groove 8, that is, a portion slightly lower than the upper end, an engaging recess 8a is continuously provided in the turning direction due to the weight of the leg link 6.

A grounding member 9 made of, for example, a rotatable spherical body is provided at the lower end of the leg link 6 so that when the leg body 5 is undulated as described later, the undulation can be performed smoothly. It is like this.

A support link 11 is provided at the other end of the fixture 4.
One end of the is pivoted by a pin 12. The other end of the support link 11 is inserted into the inside of the leg link 6 through the opening 6a as shown in FIG. 2 (a), and one end of a stopper pin 13 as a stopper member is fixed to the inserted end. Has been done. The other end of the stopper pin 13 is slidably engaged with the slide groove 8, and the end of the stopper pin 13 projects between the outer surface of the leg link 6 and the other side 7b of the cover member 7.

On the inner surface side of the other side 7b of the cover member 7, a lever 14 is rotatably mounted at its midpoint by a pin 15. The other side 7 of the cover member 7
A washer 16 and a disc spring 1 are provided between b and the lever 14.
7 is interposed to prevent the lever 14 from freely rotating. That is, the lever 14 is given a predetermined resistance to its rotation by the elastic force of the disc spring 17.

The lever 14 has substantially the same length as the slide groove 8, the upper end portion corresponding to the engaging recess 8a is formed into an L-shaped guide portion 14a, and the other end portion has a sloped surface. The stair-like step portion 14b is formed through the.

When the lever 14 is rotated clockwise about the pin 15 as a fulcrum, as will be described later, as shown by an arrow a in FIG. 1, the guide portion 14a is positioned slightly above the engagement recess 8a of the slide groove 8. When projecting and rotating counterclockwise as indicated by arrow b, the stepped portion 14b projects to the lower end of the slide groove 8.

As shown in FIG. 3, a pair of casters 18 is provided on both sides (only one side is shown) of the midway portion of the base 1 in the longitudinal direction. Each caster 18 is grounded together with the grounding member 9 provided at the lower end of the leg 5 when the leg 5 is laid down, so that the base 1 can be easily moved.

Next, the operation of raising or lowering the legs 5 of the bed apparatus having the above structure will be described. As shown by the solid lines in FIGS. 1 and 3, when the leg body 5 is in the upright state, the stopper pin 13 provided at the lower end of the support link 11 slides on the leg link 6 of the leg body 5. The groove 8 is engaged with the engaging recess 8 a. Therefore, the leg body 5 is held by the support link 11 so as not to fall down at a predetermined standing angle.

At this time, when the stopper pin 13 is engaged with the engaging recess 8a, the upper portion of the lever 14 is pressed and rotated in the direction of arrow b, and the guide portion 14a provided on the upper portion slides. It is retracted from the groove 8.

When the leg body 5 held in such an upright state is to be laid down, one end of the base 1 is slightly lifted upward. As a result, the leg 5 on the one end side rotates in the direction indicated by the arrow X in FIG. 1 due to its own weight, so that the stopper pin 13 is engaged from the state indicated by P1 in FIG. 4 (a) as indicated by P2. It is disengaged from the recess 8a and relatively displaced to the slide groove 8.

Next, when the base body 1 is lowered and the grounding member 9 at the lower end of the leg body 5 is grounded, the leg body 5 rotates in the fall direction opposite to the direction indicated by the arrow X and the stopper pin 1
3 slides down the slide groove 8 as indicated by P3 in FIG. 4 (a). The stopper pin 13 is P4 in Fig. 4 (b).
When you slide to the lower end of the slide groove 8 as shown in
The leg 5 falls down to the state shown by the chain line in FIG. At the same time, the stopper pin 13 presses the stepped portion 14b at the lower end of the lever 14 protruding into the slide groove 8, and the lever-1
4 is rotated in the clockwise direction indicated by arrow a in FIG. As a result, the lever 14 is rotated so that the guide portion 14 a at the upper end thereof projects into the slide groove 8. In addition, if the legs 5 on the other end side of the base 1 are also laid down in the same manner, the base 1
Is supported by the grounding member 9 provided at the lower end of each leg 5 and the caster 18 provided in the middle of the base body 1, so that it can be freely moved.

To raise the leg 5 in the lying state, the base 1 is lifted. As a result, the leg 5 is rotated in the direction indicated by the arrow X in FIG. 1 by its own weight, and the rotation causes the stopper pin 13 to move the slide groove 8 from the position indicated by P4 in FIG. 4B to the upward direction indicated by P5. 1 and slides the support link 11 in the direction indicated by arrow Y in FIG.

When the leg 5 stands up to a predetermined angle, that is, the stopper pin 13 reaches the upper part of the slide groove 8 shown by P6 in FIG. When it comes into contact with the guide portion 14a of the lever 14 protruding slightly upward, the leg 5 is prevented from further rotating in the standing direction.

In this state, the base 1 is slightly lowered and the leg 5
When is slightly rotated in the fall direction opposite to the arrow X, the stopper pin 13 is engaged with the engaging recess 8a as shown by P7 in FIG. 4B while being guided by the guide portion 14a.

Incidentally, the stopper pin 13 in this state
The position of is the same as the state indicated by P1 in FIG. Therefore, the leg body 5 is prevented from further rotating in the fall direction, so that the leg body 5 is held at the predetermined standing angle.

When the stopper pin 13 engages with the engaging recess 8a, the stopper pin 13 presses the upper end of the lever 14 and rotates the lever 14 in the direction of arrow b.
The guide portion 14a is retracted from the slide groove 8 and the step portion 1
4b projects into the slide groove 8. for that reason,
Next, when the leg body 5 in the upright state is toppled, the base body 1 is slightly lifted and then lowered, as described above, so that the stopper pin 13 is not engaged with the engaging recessed portion 8a and the slide groove is slid. 8 can be slid to the lower end side.

That is, according to the present invention, the lever 14 is automatically rotated according to the ups and downs of the legs 5, and the rotation causes the stopper pin 13 to engage with the engaging recess 8a of the slide groove 8. It is a configuration in which the leg body 5 is held in an upright state or is laid down without engaging.

Therefore, when the leg body 5 in the upright state is toppled or, conversely, to raise the leg body 5 in the lying state, the base body 1 in the lowered state should be slightly lifted with one hand and then lowered. Since only the operation of lifting the base body 1 in the lowered state is required, the operation can be performed easily and quickly, and the configuration therefor is simple.

[0033]

As described above, according to the present invention, it is possible to raise and hold the leg body in the lying state by simply lifting the base body, and to raise the base body slightly when the leg body is in the standing state. After that, if it is lowered, the legs can be laid down.

That is, since the legs can be undulated simply by raising or lowering the base, the operation can be performed easily and quickly, and the structure can be simplified.

[Brief description of drawings]

FIG. 1 is a side view of a leg body showing an embodiment of the present invention.

2A is a sectional view taken along line AA of FIG.
(B) is sectional drawing which similarly follows the BB line.

FIG. 3 is a side view of the bed apparatus.

FIG. 4 is an explanatory view of similarly raising and lowering the legs.

[Explanation of symbols]

1 ... Base, 5 ... Leg, 8 ... Slide groove (slide part),
8a ... Engagement concave part, 11 ... Support link, 13 ... Stopper pin (stopper member), 14 ... Lever, 14a ... Guide part, M ... Mattress.

Claims (1)

[Claims] 1. A bed apparatus capable of changing a supporting height of a base body on which a mattress is placed on an upper surface thereof. A leg having an upper end pivotally attached to a lower surface side of the base body so as to be rotatable in a standing direction by its own weight. A body, a slide portion formed on one side of the leg body in the up-down direction and having an engagement recess formed continuously on the upper end side thereof in the direction of rotation by the weight of the leg body, and the base body. A support link whose one end is pivotally attached to a portion spaced apart by a predetermined dimension from a position where the upper end of the leg is pivotally attached, and which is fixed to the other end of the support link and slidably inserted into the slide portion. A stopper member; and a lever having a guide portion formed at one end corresponding to the engaging recess at the upper end of the slide portion, the intermediate portion being rotatably connected to one side of the leg body, Above the lever, the legs fall When the stopper member slides to the lower end portion of the slide portion, the guide portion is rotated so as to project to the slide portion, the leg body is rotated in the upright direction, and the stopper member slides the slide portion. It has a structure in which the stopper member is guided to the engaging recess by the guide portion protruding toward the slide portion by sliding in the ascending direction, and the guide portion is rotated by the stopper member so as to retract from the slide portion. A bed device characterized by being present.