JPH088678Y2 - Bed equipment - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bed device whose height can be changed.

[0002]

2. Description of the Related Art Usually, a bed device has a constant height,
The height of the bed device is set so that it is easy for a user of average size to use.

For example, a user is lying or sitting on the bed apparatus as described above every day, and the user performs the operation of getting on and off the bed apparatus each time.

There are various types of such users, such as tall people, short people, young people, elderly people, healthy people, and sick people.

Of the above-mentioned users, for example, when a short person sits down on a bed apparatus having a high mattress surface, it may be difficult to sit down.

Similarly, it may be difficult for an elderly person or a sick person to get in and out of a bed apparatus having a high mattress surface. Thus, the optimum height of the bed apparatus differs depending on the user, and it has been desired to develop a bed apparatus capable of changing the height of the bed apparatus according to the user's preference.

As a solution to such a problem, there is a hospital bed apparatus used in hospitals and the like. A hospital bed apparatus capable of height adjustment is, for example, one in which a complicated link mechanism attached to the lower surface of the base is operated by a power source of a motor or a handle to move the base up and down.

[0008]

However, the conventional bed apparatus, in which the height can be changed by the drive source, has a very complicated structure, which makes the price very high and difficult to purchase. There is.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a bed apparatus which has a simple structure and is inexpensive and which can be easily adjusted in height. To do.

[0010]

In order to solve the above problems, the present invention relates to a bed apparatus capable of changing the supporting height of a base on which a mattress is placed, the one end of which is rotated by the base. A support link that is freely connected, and a receiving portion that extends along the longitudinal direction and into which the other end of the support link is rotatably inserted, and one end of which is at a predetermined distance from one end of the support link of the base body. A receiving link rotatably connected to a separated position, a long groove having a plurality of engaging portions formed along one end side in the longitudinal direction of at least one side wall of the receiving link, and the support link. The engaging pin that is provided at the other end of the slot and is slidably inserted into the long groove, and is slidable in the receiving portion of the receiving link.
Lifting the base provided by engaging with the engaging pin
When the above receiving link rotates in the standing direction,
The other end of the long groove without engaging the engaging pin with the engaging portion.
From the rear side to the one end side and the above
Lower the base and ground the receiving link to rotate it in the fall direction.
The engagement pin can be engaged with the engagement part when moved.
And a slider having a front step portion that operates .

[0011]

According to the above construction, when the engaging pin is located at the lower end, which is the other end of the long groove, the base body is lifted and the receiving link is rotated in the standing direction by its own weight. The engaging pin slides from the other end side to the one end side of the long groove while interlocking the slider. By lowering the base body at an appropriate slide position to ground the receiving ring and rotating it in the direction opposite to the rotating direction by its own weight, the engaging pin engages with the engaging portion at the appropriate position of the long groove and the receiving link Therefore, the base is supported at a height according to the rotation angle of the receiving link at that time.

If the base is continuously lifted and the engaging pin is slid to the upper end of the long groove, and then the base is lowered to ground the receiving link, the engaging pin is prevented from engaging with the engaging part by the slider. The receiving link rotates in the fall direction until the engaging pin engages with the other end of the long groove, and slides to the other end of the long groove, and the base is supported at a height according to the rotation angle. To be done.

[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. 1 includes a base 1 on which a mattress 2 is placed. The base 1 is formed in a frame shape by a pair of long vertical bars 3 and a pair of horizontal bars 4 provided at both ends in the longitudinal direction of the vertical bars 3. In the middle part in the height direction on the inner surface side of the pair of vertical bars 3 facing each other,
And the receiving bar 5 along the longitudinal direction of the vertical bar 3 as shown in FIG.
Is provided.

At a portion surrounded by the pair of vertical rails 3 and the pair of horizontal rails 4, a floor plate 6 is erected by engaging both end portions in the width direction with the receiving rail 5, and on the floor plate 6. The mattress 2 is placed. Further, a head board 7 is detachably provided on one end side in the longitudinal direction of the base body 1, and a foot board 8 is detachably provided on the other end side.

On the lower surface of both ends of the base 1 in the longitudinal direction,
Link mechanisms 10 are provided at corresponding positions in the width direction.
Is provided. The link mechanism 10 is configured so that the support height of the base 1 can be changed in several steps, as will be described later. Since the link mechanisms 10 provided at opposite ends of the base body 1 in opposite directions have the same structure, the link mechanism 10 on one side will be described below.

That is, the fixtures 11 each having a predetermined length are attached to the lower surfaces of the ends of the pair of receiving bars 5 in the longitudinal direction at corresponding positions. This fixture 11 is shown in FIGS.
As shown in FIG. 2, the rectangular upper surface portion 12 and the first and second first portions extending downward in the width direction on both sides of the upper surface portion 12 and extending in the longitudinal direction.
Bolts 17 are inserted into a hole 15 formed in the upper surface 12 of the fixture 11 and a hole 16 formed along the up-down direction of the receiving bar 5, The fixing tool 11 is attached to the receiving bar 5 by screwing the bolt 17 into the nut body 19 provided in the recess 18 formed in the upper end of the receiving bar 5.

On one end side of the first hanging piece 13 of the fixing tool 11, one end portion (upper end portion) of a support link 20 having a substantially U-shaped cross section is rotatably pivoted as described later. As shown in FIG. 9, an engagement pin 22 is fixed to the other end of the support link 20 with one end protruding from the side surface part 21.

The upper surface 23 at one longitudinal end of the support link 20 is cut off as shown in FIG. As shown in FIG. 6, one end portion of the support ring 20 has the first hanging piece 13 of the fixture 11 interposed between the both side surface portions 21,
A pin 26 is inserted through a hole 24 formed in the first hanging piece 13 and a hole 25 formed in both side surfaces 21 at one end of the support link 20 so as to be pivotally attached.

A spring body 27 is provided on the pin 26 as shown in FIG. One end of the spring body 27 engages with the inner surface of the upper surface portion 12 of the fixing tool 11, and the other end is bent into an L shape and locked to the upper end side edge of one side surface portion 21 of the support link 20. ing. This spring body 27 urges the support link 20 in the direction indicated by arrow X in FIG. 4 and FIG. 4, that is, in the clockwise direction of rotation toward the longitudinal center of the base 1 indicated by the alternate long and short dash line in FIG.

As shown in FIGS. 4 and 8, one end of a receiving link 28 is pivotally attached to the other end of the fixture 11 so as to be rotatable. As shown in FIG. 9, the receiving link 28 is formed in a substantially U-shape including a bottom surface portion 29 and side surface portions 30 and 31, and an upper end portion of the side surface portion 31 which is an outer side in the width direction of the base body 1 faces inward. Is formed in the receiving portion 32 bent at a right angle. An opening 28a is formed between the tip of the receiving portion 32 and the upper end of the one side surface portion 30 and extends over substantially the entire length of the receiving link 28 in the longitudinal direction.

As shown in FIG. 8, one end (upper end) in the longitudinal direction of the receiving link 28 has a bottom surface 29 cut off.
The fixing device 11 is provided between the side surface portions 30 and 31 of the one end portion.
The first hanging piece 13 of is located. A cylindrical first spacer 33 is provided between one side surface portion 30 of the receiving link 28 and the first hanging piece 13, and the other side surface portion 3 is provided.
A cylindrical second spacer 34 is provided between the first hanging piece 13 and the first hanging piece 13.

A pair of side surface portions 30 of the receiving link 28,
31 are provided with holes 35 and 36, respectively. The holes 35 and 36, the hole 37 formed in the first hanging piece 13, and the pins 38 in the first and second spacers 33 and 34 are formed.
Is inserted therethrough, whereby one end of the receiving link 28 is pivotally attached to the fixture 11. The end of the pin 38 is crimped so as not to be pulled out after being inserted.

As shown in FIGS. 4 and 5, a long groove 39 is formed along the longitudinal direction of the side surface 31 inside the receiving link 28, as shown in FIGS. The long groove 3 is provided at the lower end of the long groove 39.
9, a plurality of engaging portions 4 each formed of a substantially semicircular recess communicating with 9.
Zeros are formed at appropriate intervals along the longitudinal direction of the long groove 39. An upper linear portion 39a extending further upward from the uppermost engaging portion 40 is formed on one end side of the long groove 39 which is the upper end of the receiving link 28, and the lowermost engaging portion is formed on the other end. Lower straight portion 39b extending downward from the portion 40
Are formed.

As shown in FIG. 2, both ends of a lower connecting member 41 are connected to the other longitudinal ends (lower ends) of the pair of receiving links 28 in the width direction of the base body 1. An upper connecting member 42 is provided at one end (upper end) of the receiving link 28 so as to connect both ends to the pair of receiving links 28. Therefore, the pair of left and right receiving links 28 are interlocked with each other in rotation about one end as a fulcrum.

As shown in FIGS. 5 and 9, the receiving link 28 has a bottom surface 29 and a pair of side surfaces 3.
An accommodating portion 28b surrounded by 0, 31 and a receiving portion 32 formed at the upper end of the outer side surface portion 31 is formed over substantially the entire length in the longitudinal direction. The slider 43 is slidably accommodated in the accommodating portion 28b along the longitudinal direction of the receiving link 28.

The slider 43 has a main body 43a made of synthetic resin such as Delrin as shown in FIGS. A through hole 51 is formed in the body portion 43a in the thickness direction. As a result, the main body portion 43a has a front end portion 44 formed on one end side in the front-rear direction and a rear end portion 47 formed on the other end side. Between the front end portion 44 and the rear end portion 47, a front step portion 45 and a rear step portion 46, which is connected to the front step portion 45 and is cut out one step below the front step portion 45, are formed in a stepwise manner. Has been formed.

A pair of storage holes 43a are formed in the front-rear direction on the upper surface of the main body 43a. This storage hole 43a
One end of the spring body 48 is housed in the spring, and an upper plate 52 made of the same material as the main body 43a is elastically displaceably held at the other end of the spring body 48.

When the slider 43 is accommodated in the accommodating portion 28b of the receiving link 28, the body 43a of the slider 43 and the upper plate 52 are urged by the spring force of the spring body 48 so that the bottom surface 29 of the receiving link 28 and the receiving link 28 are received. The portion 32 is elastically pressed. In this state, the upper surface of the front step portion 45 of the slider 43 is substantially flush with the lower side surface 39c of the long groove 39 of the receiving link 28 as shown in FIG. 5, and the upper surface of the rear step portion 46 of the slider 43 is The lower end surface 40a of the engaging portion 40 of the receiving link 28 is substantially flush with the lower surface 40a.

As shown in FIG. 9, the lower end portion of the support link 20 on which the engagement pin 22 is provided is the receiving link 28.
Is inserted into the housing portion 28b through the opening 28a.
One end 22a of the engaging pin 22 is inserted into the through hole 51 of the slider 43 and the long groove 22b formed in one side wall of the receiving link 28, and protrudes to the outside.

The slider 43 is pressed against the bottom surface portion 29 and the receiving portion 32 of the receiving link 28 by the elastic force of the spring body 48. Although it does not slide downward, it is provided so as to slide inside the receiving link 28 by applying a predetermined force in the sliding direction.

That is, if the elastic force of the spring body 48 is too large, the slider 43 will not slide smoothly,
On the contrary, if it is too weak, it may fall downward due to its own weight. Therefore, the elastic force of the spring body 48 is set so that the slider 43 slides smoothly and does not fall downward by its own weight.

When the receiving link 28 is at the angle shown by the solid line in FIG. 4, the one end side 22a of the engaging pin 22 provided at the other end which is the lower end side in the longitudinal direction of the support link 20 has the slider 43 of the one end side 22a. It is locked on the front step portion 45 and penetrates the lower linear portion 39b of the long groove 39 of the receiving link 28 to project to the outside.

According to the bed apparatus having the above structure, as shown in FIG. 4, one end side 22a of the engaging pin 22 provided at the lower end side of the support link 20 is locked on the front step portion 45 of the slider 43, Further, in the state in which it is engaged with the end of the lower linear portion 39b of the long groove 39, the receiving link 28 is held at the angle shown by the solid line in the figure. That is, the fixture 11 and the support link 20
Since the receiving link 28 and the receiving link 28 form a triangular side having the engaging pins 22, 26, and 38 as vertices, the base 1 is held at the lowest height indicated by H ₁ in FIG. 1 by the link mechanism 10. To be done.

Next, if the base body 1 is lifted up a little from the above state, the receiving link 28 is moved by its own weight.
Rotates about the pin 38 in the clockwise direction indicated by arrow Y in FIG. With the rotation of the receiving link 28, the one end side 22a of the engaging pin 22 moves in the long groove 39 of the receiving link 28 in the upward direction indicated by the arrow Z in FIG. 22a abuts on the inner surface of the rear end portion 47 of the slider 43 and pushes up the slider 43 to slide it in the receiving portion 28a of the receiving link 28. At this time, the slider 43 is pressed against the bottom surface portion 29 of the receiving link 28 by the elastic force of the spring body 48. However, since the weight of the receiving link 28 is considerably large, the moment due to the rotation of the receiving link 28 is the spring body. It becomes larger than the frictional force due to the elastic force of 48. Therefore, the slider 43 slides upward together with the engagement pin 22 in the housing portion 28b.

When it is desired to support the base body 1 at a predetermined height, the base body 1 is lowered at the time when the receiving link 28 is rotated to some extent in the arrow Y direction to lower the lower connecting member 41.
Ground to the floor. As a result, the receiving link 28 rotates counterclockwise, which is the direction opposite to the rotating direction (Y direction) due to its own weight, so that the one end side 22a of the engaging pin 22 moves relatively downward in the long groove 39. While being displaced, it engages with the engaging portion 40 located therebelow. Therefore, rotation of the receiving link 28 in the counterclockwise direction is prevented at that position,
The link mechanism 10 can hold the base 1 of the bed apparatus at a predetermined height. At this time, the portion of the one end side 22a of the engaging pin 22 corresponding to the slider 43 is the rear step portion 46 of the slider 43 as shown by the chain line in FIG.
Located on top.

As described above, the base body 1 is engaged with the engaging portion 40 at a predetermined position from the lowest position where the engaging pin 22 is engaged with the end portion of the lower linear portion 39b of the long groove 39. , Its supporting height can be variously changed.

The state shown by the alternate long and short dash line in FIG. 4 is a state in which the one end side 22a of the engagement pin 22 is engaged with the engagement portion 40 located at the uppermost position, and the base 1 is supported at the highest position. .

In order to convert the state in which the base body 1 is supported at the highest position to the lower support position, first, the other end side 22b of the engagement pin 22 shown by the chain line in FIG. The base 1 is further lifted from the state of being engaged with the portion 40. As a result, the receiving link 28 is further arrow Y by its own weight.
Rotate in the direction.

With the rotation of the receiving link 28, the one end side 22a of the engaging pin 22 is disengaged from the uppermost engaging portion 40 shown by the chain line in FIG. 4, and the upper linear portion of the long groove 39 as shown in FIG. Move to 39a. Further, the portion of the engaging pin 22 that is inserted into the slider 43 on the one end side 22a is the slider 4
If the slider 43 is further pushed up, the slider 43 is moved to a position where it engages with the end portion of the upper linear portion 39a.

As a result, the front step portion 45 of the slider 43 has the engaging portion 4 located at the uppermost portion of the receiving link 28.
It is located above 0. The upper surface of the front step portion 45 is at the same level as the lower end surface 39a of the long groove 39.

Therefore, by lowering the base body 1 in this state and grounding the lower connecting portion 41 of the link mechanism 10 to the floor surface, the receiving link 28 is in the direction opposite to the arrow Y direction.
When it is rotated counterclockwise, the rear end portion 4 of the slider 43 is
The one end side 22a of the engagement pin 22 that has been in contact with 7 passes above the rear step portion 46 of the slider 43 and is locked on the front step portion 45, and abuts on the inner surface of the front end portion 44.

Further, a portion of the engaging pin 22 corresponding to the long groove 39 on the one end side 22a slides downward on the upper linear portion 39a. At this time, the slider 42 has the front step portion 45.
Is at a position substantially corresponding to the uppermost engaging portion 40 of the receiving link 28, the one end side 22a of the engaging pin 22 slides without engaging with the uppermost engaging portion 40.

The engaging pin 22 that has moved to the front step portion 45 of the slider 43 and has the one end portion 22a abutted against the inner surface of the front end portion 44 of the slider 43 is further rotated by the rotation of the receiving link 28. The slider 43 is pushed and slid until it engages with the end of the lower linear portion 39a of the long groove 39 while being prevented from engaging with the engaging portion 40 by the front step portion 45. As a result, the receiving link 28 falls down to the position shown by the solid line in FIG.
It is supported at the lowest height indicated by H1 in FIG.

When lowering the base body 1, the slider 43 is pressed against the receiving link 28 by the spring body 48 and does not move downward by its own weight.
3 and the engagement pin 22 are not displaced relative to each other. That is, the engagement pin 22 is kept in contact with the inner surface of the front end portion 44 of the slider 43.

Therefore, the engaging pin 22 moves downward from the uppermost end of the long groove 39, and engages with the distal end portion of the lower linear portion 39b during and after the contact with the front end portion 44 of the slider 43. Until then, the slider 43 slides downward by its own weight, and the one end side 22a of the engagement pin 22 does not come off the front step portion 45 and face the rear step portion 46. Therefore, the slider 43 can reliably prevent the engagement pin 22 from engaging with the engagement portion 40.

If the slider 43 is apt to move downward due to its own weight, when the engaging pin 22 is moved downward from the uppermost end of the long groove 39, at the same time, the slider 43 slides downward. Will end up. for that reason,
The engaging pin 22 engages with the engaging portion 40 of the receiving link 28 without being locked on the front step portion 45 of the slider 43 and prevents the receiving link 28 from rotating in the fall direction. The base 1 cannot be lowered downward.

However, according to the present invention, as described above, the slider 43 is held by the resilient force of the spring body 48 so as not to slide by its own weight, so that the supporting height of the base 1 can be surely lowered. .

[0048]

As described above, according to the present invention, since the supporting height of the base of the bed apparatus can be changed in several steps, the user can surely set the height according to his / her preference. . Also, the link mechanism for changing the support height,
Since it is a simple mechanism that does not use a drive source, it can be provided at low cost. Further, since the support height can be surely changed by a simple operation of slightly lifting the base, it is excellent in operability and very convenient.

[Brief description of drawings]

FIG. 1 is a front view of a bed apparatus according to the present invention.

FIG. 2 is a side view of the bed apparatus.

FIG. 3 is a sectional view of the slider.

FIG. 4 is a side view showing the link mechanism taken along the line AA in FIG.

FIG. 5 is a partial cross-sectional side view of the link mechanism in a state where the engagement pin is engaged with the uppermost end of the long groove of the link.

6 is a cross-sectional view of one end of the support link taken along the line BB of FIG.

7 is a sectional view taken along the line EE in FIG.

8 is a sectional view of one end of the receiving link taken along the line CC in FIG.

9 is a cross-sectional view of the other end of the receiving link taken along the line D-D in FIG.

[Explanation of symbols]

1 ... Substrate, 2 ... Mattress, 10 ... Link mechanism, 11 ...
Fixture, 13 ... First hanging piece, 20 ... Support link, 22
... engaging pin, 28 ... receiving link, 28a ... accommodating portion, 39
... long groove, 40 ... engaging part, 43 ... slider, 45 ... front step, 46 ... rear step, 48 ... spring body.

Claims (1)

[Scope of utility model registration request] 1. A bed apparatus capable of changing a support height of a base on which a mattress is placed on an upper surface, the support link having one end rotatably connected to the base, and the support link extending in the longitudinal direction. A receiving link having a receiving portion into which the other end of the support link is rotatably inserted and one end of which is rotatably connected to a position spaced apart from the one end of the support link of the base by a predetermined distance; A long groove having a plurality of engaging portions formed from one end side to the other end side in the longitudinal direction of at least one side wall of the receiving link, and a long groove provided at the other end of the support link and slidably inserted into the long groove. The engaging pin and the receiving portion of the receiving link slidably and without the engaging pin.
Is provided by engaging with the
When the receiving link rotates in the standing direction,
From the other end side to the one end side of the long groove without engaging with the engaging portion
Lower the rear step and the above-mentioned base that can be slid to
When the receiving link is grounded and rotated in the fall direction
A front step portion that enables the engagement pin to engage with the engagement portion
And a slider having a bed.