JP3057636B2 - Half-wake bed - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wake-up bed which can be used in a state where a user raises or lays his / her upper body by raising and lowering a frame of a part supporting the upper body.

[0002]

2. Description of the Related Art As a kind of bed mainly used by elderly people with physical disabilities, there is a half-rise bed in which a frame supporting an upper body can be raised and lowered. As shown in FIG. 5, for example, a half body wake-up bed according to the prior art has a lower body support frame 102 fixedly supported on a base frame 101, and a pivot axis connected to the lower body support frame 102 via a horizontal hinge 103. The upper body support frame 104 and the fluid pressure cylinder device 10 for raising and lowering the upper body support frame 104 about the hinge 103
5 and a mattress 106 laid on the lower body support frame 102 and the upper body support frame 104. That is, in this half-body rising bed, the upper body support frame 104 supporting the upper body A1 of the user A via the mattress 106 can be raised up to a predetermined rising angle by the operation of the fluid pressure cylinder device 105.
User A can eat and read while staying on the bed, which is convenient when getting out of the bed.

[0003]

However, in the above-mentioned prior art, when the user A raises the upper body A1 by raising the upper body support frame 104, the user A raises the upper body support frame 104.
The waist A2 of the user A is pushed forward to receive pressure, and the back of the user A is pulled down by friction with the mattress 106. Conversely, when the upper body supporting frame 104 is lowered, the back of the user A is lifted. It is pointed out that the user feels discomfort, such as receiving sliding friction.

[0004] In the process of erecting the upper body supporting frame 104, the friction that pulls the back of the user A downward is generated by the rotation center of the upper body supporting frame 104 (the hinge 10).
This occurs due to the rotation center (waist A2) of the upper body A1 of the user A being higher than the center of rotation of the upper body A1 of the user A. That is, the point α on the upper body A1 of the user A lying on the bed and the corresponding point β on the upper body support frame 104 are centered on the axis of the hinge 103 and the waist A2 with the standing motion, respectively. Since the point β ′ moves along points α ′ and β ′ in a rotational trajectory, the point β ′ is shifted downward by a distance L relative to the point α ′, thereby generating friction.

SUMMARY OF THE INVENTION The present invention has been made under the above circumstances, and a technical problem thereof is that the back is rubbed when the user raises the upper body by raising the upper body supporting frame. It is to eliminate the discomfort of being pulled downward.

[0006]

Means for Solving the Problems The technical problems described above are:
This can be effectively solved by the present invention. That is, the half body wake-up bed according to the present invention includes an upper body support frame having one end rotatably provided on a first support shaft having a substantially horizontal axis and capable of raising and lowering about the first support shaft; Lower body support frame rotatably provided on a second support shaft substantially parallel to and substantially the same height as the first support shaft,
An axis is provided so as to be able to move up and down around a third support shaft located substantially below the upper body support frame, the axis of which is substantially parallel to the first support shaft, and the upper body support frame is pressed and supported from the back side thereof. A bending frame having a first support portion and a second support portion opposite to the first support portion and relatively rotatably connected to a waist support end of the lower body support frame on the upper body support frame side. The bent frame has a bent shape in which the tip of the second support is substantially at the same height as the first support shaft when the first support is supporting the upper body support frame substantially horizontally. .

According to the configuration of the present invention, the upper body of the user is supported on the upper body support frame, and the lower body from the waist to the thigh is supported on the lower body support frame via the mattress. In a state in which the upper body support frame is tilted substantially horizontally, the second support portion of the bent frame, which is at substantially the same height as the first support shaft, is moved in accordance with the standing operation of the first support portion of the bent frame and the upper body support frame. The user's waist supported on this waist support end wakes up in order to swing downward on the circumference around the third support shaft and displace the waist support end of the lower body support frame downward. Displaced downward during the process. Accordingly, the rotation trajectory of the upper body around the waist shifts downward with the wake-up operation, whereby the occurrence of friction that pulls the back of the user downward is eliminated. Also, at this time, the waist support end of the lower body support frame is displaced away from the first support shaft, which is the fulcrum of the upper body support frame, so that the user's lumbar pressure due to the standing motion of the upper body support frame is also eliminated. Is done.

[0008] A more preferable configuration added in the present invention is a fourth body having an axial center substantially parallel to and substantially flush with the first and second support shafts on the side opposite to the waist support end of the lower body support frame. A second lower body support frame rotatable about the support shaft is provided, and opposing ends of the lower body support frame and the second lower body support frame are rotatably connected to each other. According to this configuration, the lower body of the user can be supported by the lower body support frame from the waist to the thigh and the knee, and the portion below the knee can be supported by the second lower body support frame. In this case, since the second lower body support frame operates to lower the user's feet around the fourth support axis, the user's waist is lowered with the upper body support frame standing up and down. Can be prevented from being relatively lifted.

In another preferred embodiment of the present invention, the lower body support frame is divided into a waist support frame and a thigh support frame at an intermediate position between the lower body support frame and the thigh support frame. A connecting fifth support shaft is attached to the swing end of the swingable support arm substantially corresponding to the second support portion of the bending frame. According to this configuration, when the second support portion of the bent frame swings downward in accordance with the upright motion of the upper body support frame, the fifth support shaft also swings so that the fifth support shaft also falls with the downward displacement of the lumbar support frame. Therefore, the lower body support frame is displaced downward while being bent downward at a connection position between the intermediate position (the waist support frame and the thigh support frame by the fifth support shaft). For this reason, the waist of the user can be displaced more significantly downward during the wake-up process.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a first preferred embodiment of a half-rise bed according to the present invention. The half body wake-up bed includes a base frame 10, an upper body support frame 20, a lower body support frame 30, a bending frame 40, and a second lower body support frame 50 disposed on the base frame 10, and the bending frame 40. A gas lifter 60 for raising and lowering the upper body supporting frame 20 through the upper body supporting frame 20, the lower body supporting frame 30, and a mattress 70 laid on the second lower body supporting frame 50 are provided.

The base frame 10 is provided with first to fourth support shafts 1 to 4 whose axes extend substantially in the width direction of the base frame 10 and substantially horizontally. 1, the second support shaft 2 and the fourth support shaft 4 are disposed at substantially the same height as each other, and the third support shaft 3 is disposed at a position substantially below the first support shaft 1. I have. Further, while the first and third support shafts 1 and 3 are fixedly provided on the base frame 10, the second and fourth support shafts 2 and 3 are provided.
4 is movable as will be described in detail later.

The upper body supporting frame 20 has a base end 2
1 is rotatably mounted around the first support shaft 1,
That is, it is attached to the base frame 10 via the first support shaft 1 so as to be able to move up and down.

The lower body support frame 30 has a waist support end 31 at the end on the upper body support frame 20 side and a back support end 32 at the opposite end, and substantially corresponds to the waist to the thigh of a human body. It has a length. Second support shaft 2
The lower arm support frame 30 rotatably supports a portion of the lower body support frame 30 near the back support end 32. The support arm 34 is provided on the base frame 10 via a horizontal shaft 33 so as to be swingable. It is movable by being attached to the upper end. In addition, this lower body support frame 30
The waist support end 31 is substantially horizontally opposed to and close to the base end 21 (first support shaft 1) of the upper body support frame 20 when in a substantially horizontal state.

The bending frame 40 has a first supporting portion 41 for pressing and supporting the upper body supporting frame 20 from the rear side via rollers 41a, and a lower supporting frame 30 on the opposite side to the first supporting portion 41. A second support portion 42 connected to the waist support end portion 31 via the first connection shaft 5 so as to be relatively rotatable, and a fulcrum portion 43 close to the second support portion 42
Is rotatably attached to the base frame 10 via a third support shaft 3 which is disposed below the upper body support frame 20. When the first support portion 41 supports the upper body support frame 20 substantially horizontally, the bent frame 40 is connected to the second support portion 42 (the first connection shaft 5). Is formed at a fulcrum portion 43 of the third support shaft 3 so as to be substantially the same height as that of the third support shaft 3.

In the second lower body support frame 50, the upper shin support end 51, which is the end on the lower body support frame 30 side, is connected to the knee back support end 32 of the lower body support frame 30 via the second connection shaft 6. And are connected so as to be relatively rotatable. The fourth support shaft 4 rotatably supports an intermediate portion of the second lower body support frame 50, and is provided on the base frame 10 via a horizontal shaft 53 so as to be swingable. It is movable by being attached to the upper end of 54.

In the vicinity of the first support shaft 1, a protection plate 7 as shown in FIG. 2 is provided along the rotation locus of the second support portion 42 of the bending frame 40 about the third support shaft 3. And are fixed to bearing members (not shown) of the first and third support shafts 1 and 3. When the upper body supporting frame 20 is erected, the protective plate 7 is bent by the mattress 70 that is displaced downward together with the waist supporting end 31 of the lower body supporting frame 30, and the mattress 70 is bent at the base end of the upper body supporting frame 20. This prevents the lower body 21 from being caught between the lower body support frame 30 and the waist support end 31.

The gas lifter 60 has a cylinder 61 rotatably attached to the base frame 10 via a link pin 61a having a substantially horizontal end, and a link pin 62a projecting from the other end of the cylinder 61 and having a substantially horizontal end. Rod 62 connected to the first support portion 41 of the bending frame 40 via
And That is, the gas lifter 60 urges the rod 62 in the protruding direction through the piston (not shown) in the cylinder 61 by the gas pressure in the cylinder 61, and raises the first support portion 41 of the bent frame 40. It is to let.

In the above configuration, when the upper body support frame 20 is held substantially horizontally, the lower body support frame 30 and the second lower body support frame 50 are also held horizontally, and are substantially the same as the upper body support frame 20. Height. This is because when the upper body support frame 20 is in a state of being substantially horizontally inclined, the tip of the second support portion 42 of the bent frame 40 is connected to the tip of the waist support end 31 of the lower body support frame 30 (the first connection shaft 5). ) To the first support shaft 1
And the second and fourth support shafts 2 and 4 on the support arms 34 and 54 which are in a substantially upright state at this time also have substantially the same height as the first support shaft 1. As a result, the second connection shaft 6 is also connected to the first support shaft 1,
This is because they are substantially the same height as the second and fourth support shafts 2 and 4. Therefore, the user A can lie on the mattress 70 as in a normal bed. At this time, the user A lies down so that the upper body A1 is located on the upper body support frame 20.

Next, from this state, the user A moves to the upper body A1.
Is caused by the urging force in the projecting direction of the rod 62 of the gas lifter 60, the bending frame 40 is moved in the direction in which the first support portion 41 is erected, that is, clockwise in FIG. , The upper body supporting frame 20 pushes up the back of the user A, so that the user A can easily raise the upper body A1.

On the other hand, by the rotation of the bending frame 40 as described above, the second support portion 42 is displaced so as to fall around the third support shaft 3. For this reason, the lower body support frame 30 is connected to the second support portion 4 via the first connection shaft 5.
The waist support end 31 is tilted about the second support shaft 2 so that the waist support end 31 connected to the second support shaft 2 is lowered and the back support end 32 on the opposite side is lifted, and the waist support end 31 is supported by the upper body support frame. It is displaced away from the first support shaft 1 which is the fulcrum of the support shaft 20. Further, by this, the second lower body support frame 50 raises the upper shin support end 51 connected to the back of the knee support end 32 via the second connection shaft 6 and the opposite end 52 thereof. The fourth support shaft 4 is inclined as a fulcrum so as to fall.

That is, as shown by a two-dot chain line in FIG. 1, the waist support end 31 of the lower body support frame 30 falls with the erecting operation of the upper body support frame 20, so that the upper body of the user A who is lying down In the process of A1 being woken up,
Center of rotation of upper body support frame 20 (first support shaft 1)
And, the user A is gradually displaced downward so as to eliminate the height difference from the waist A2 which is the center of rotation of the upper body A1 of the user A. For this reason, the back of the user A is not pulled down by friction with the mattress 70 due to the height difference between the center of rotation of the upper body support frame 20 and the waist A2 of the user A, and the lower body support frame 30 waist support ends 31
Is displaced away from the first support shaft 1, the waist A of the user A accompanying the standing motion of the upper body support frame 20.
No feeling of oppression occurs.

At this time, the upper shin support end 51 of the second lower body support frame 50 connected to the back support end 32 of the lower body support frame 30 rises together with the back support end 32 of the knee. The opposite end 52 descends. Therefore, the user A is not burdened because the foot A4 is not relatively lifted while the knee A3 is extended with the lowering of the waist A2 when the upper body A1 is raised. In addition, since the lower body support frame 30 is tilted and displaced so that the waist support end 31 falls, it is possible to prevent the waist A2 from being pushed forward so as to slide forward during the standing operation of the upper body support frame 20.

In the wake-up process, as the upper body A1 of the user A is raised, the load acts so as to push down the waist support end 31 of the lower body support frame 30. The connection shaft 5 acts in a direction that assists the gas lifter 60 to wake up the bent frame 40. Therefore, if the user A tries to get up and puts weight on the waist A2, the wake-up operation by the gas lifter 60 can be performed smoothly even at a low gas pressure.

In the above-described operation, the tip of the waist support end 31 of the lower body support frame 30 connected to the tip of the second support portion 42 of the bending frame 40 via the first connection shaft 5 A rotation locus about the third support shaft 3 is drawn. Then, in order to allow such an operation, the second support shaft 2 which is a support portion of the lower body support frame 30 is displaced with the swing of the support arm 34, and thereby, the second lower body support frame 50 The fourth support shaft 4, which is a support portion, is also displaced with the swing of the support arm 54.

When shifting from the wake-up state shown by the two-dot chain line in FIG. 1 to the lying state shown by the solid line, if the user A causes the upper body supporting frame 20 to fall down on his back, the load is applied from the upper body supporting frame 20. It acts on the rod 62 of the gas lifter 60 via the bending frame 40, and this rod 62
Squeezes into the cylinder 61 while compressing the internal sealed gas, and the upper body supporting frame 20 and the bending frame 4
0, the lower body support frame 30 and the second lower body support frame 50 perform an operation reverse to the above-described wake-up operation. That is, as the upper body support frame 20 falls while being supported, the second support portion 42 of the bending frame 40 lifts the waist support end 31 of the lower body support frame 30, so that the user can A does not generate friction that makes A's back slip.

How much the waist A2 is displaced downward during the wake-up process is determined by a straight line connecting the support point P of the roller 41a and the axis of the third support shaft 3 (the first support portion 41 of the bending frame 40). A straight line connecting the axis of the third support shaft 3 and the first connection shaft 5 (the second support portion 4 of the bending frame 40).
The angle is appropriately set in accordance with the angle 2), the length of the second support portion 42, and the like.

In the above-described embodiment, the second lower body support frame 50 is supported on the swingable support arm 54 via the fourth support shaft 4, similarly to the support structure of the lower body support frame 30. As shown in FIG. 3, an inclined end is rotatably connected to the second connecting shaft 6 and the other end is movable on the bottom of the base frame 10 via the roller 55a as shown in FIG. A support arm 55 and one end of the fourth support shaft 4
And a support structure by an adjustment arm 56 that can be rotatably connected to the other end and selectively engage with a number of unevenness 55b formed on the inclined support arm 55. According to this structure, the inclination angle of the second lower body support frame 50 can be arbitrarily changed by selecting the engagement position of the adjusting arm 56 with the unevenness 55b of the inclined support arm 55.

FIG. 4 shows a second embodiment of a half-rise bed according to the present invention. In this half body wake-up bed, the difference from the first embodiment is that the lower body support frame 30 is divided into a waist support frame 30A and a thigh support frame 30B at an intermediate position, and the fifth support shaft 7 is The waist support frame 30A and the thigh support frame 30B are connected to each other, and are attached to the swing end of the swingable support arm 35 substantially corresponding to the second support portion 42 of the bending frame 40. It is in. In this embodiment, the second support shaft 2 also serves as the second connection shaft 6, and is attached to the upper end of the support arm 34. Other parts are almost the same as those of the first embodiment.

That is, according to this embodiment, the user A
Is trying to raise the upper body A1 from the reclined state, as described above, is used for the upper body support frame 20 receiving the urging force of the gas lifter 60 via the first support portion 41 of the bending frame 40. As the pressing force from the back of the person A decreases, the load acting downward on the second support portion 42 from the waist A2 via the waist support frame 30A of the lower body support frame 30 increases, and the bending frame 40 The user A can easily get up because he or she moves clockwise in FIG. When the second support portion 42 is displaced so as to fall on the third support shaft 3 as a center, the distal end (the first connection shaft 5) draws an arc-shaped locus. The support frame 30A is
It descends while being displaced in the direction away from the first support shaft 1 (the right side in the figure), and the center of the horizontal shaft 36 is adjusted so that the support arm 35 corresponds to the second support portion 42 of the bending frame 40. Accordingly, the thigh support frame 30B of the lower body support frame 30 is displaced downward about the second support shaft 2 on the support arm 34 as a fulcrum.

That is, the lower body supporting frame 30 is
Since the user A is displaced downward while being bent downward from the fifth support shaft 7, the waist A <b> 2 of the user A in the rising process
1 can be larger than that in which the lower body supporting frame 30 is integrated as in the first embodiment shown in FIG. 1, so that when the user A wakes up, the back of the user A Can be more effectively eliminated. Further, when shifting from the wake-up state shown by the two-dot chain line to the recumbent state again, each frame performs an operation completely opposite to that described above. To ensure such a reversible operation, the support arm 35 is
What is necessary is just to make it link with the bending frame 40 via the link 37 parallel to the waist support frame 30A.

In each of the above-described embodiments, the driving means for operating the bending frame 40 may be a pressure sealing type fluid pressure cylinder device such as a gas lifter 60, or the like.
Various types can be applied, such as a type in which a rod reciprocates with a screw propulsion force by rotating a screw shaft with a motor.

[0032]

According to the half-wake bed of the present invention, the following effects are realized. (1) A mattress that pulls the user's back down during the wake-up process by raising the upper body support frame, or conversely raises the user's back during the transition from the wake-up state to the lying state Does not cause discomfort due to friction. (2) The waist of the user is not pressed during the standing motion of the upper body supporting frame. (3) It is possible to prevent the upper body and the waist of the user from being pushed forward so as to slide forward during the standing operation of the upper body supporting frame. (4) The user is able to get up in a comfortable posture because the knee is bent to a certain extent when getting up by the standing motion of the upper body supporting frame.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing the structure and operation of a first preferred embodiment of a half-rise bed according to the present invention.

FIG. 2 is an explanatory view schematically showing a structure and operation of a main part of the embodiment.

FIG. 3 is an explanatory diagram showing a partially modified example of the embodiment.

FIG. 4 is an explanatory view showing the structure and operation of a second preferred embodiment of the half-rise bed according to the present invention.

FIG. 5 is an explanatory view schematically showing the structure and operation of a conventional half-rise bed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1st support shaft 2 2nd support shaft 3 3rd support shaft 4 4th support shaft 5 1st connection shaft 6 2nd connection shaft 7 5th support shaft 20 Upper body support frame 30 Lower body support frame 30A waist support frame 30B thigh support frame 31 waist support end 40 bent frame 41 first support 42 second support 50 second lower body support frame

Claims (3)

(57) [Claims] An upper body support frame (20) having one end rotatably provided on a first support shaft (1) having a substantially horizontal axis and capable of raising and lowering about the first support shaft (1). A lower body support that is rotatably provided on a second support shaft (2) whose axis is substantially parallel to and substantially at the same height as the first support shaft (1) and that supports the thigh from the waist of the human body. Frame (30)
A third support shaft (3) whose axis is substantially parallel to the first support shaft (1) and is located below the upper body support frame (20), and is operably movable up and down. A first support portion (41) for pressing and supporting the support frame (20) from the back side, and the upper body support frame (20) of the lower body support frame (30) on the opposite side to the first support portion (41); And a bent frame (40) having a second support portion (42) rotatably connected to the lower waist support end (31) of the vehicle. 41)
When the upper body supporting frame (20) is supported substantially horizontally, the distal end of the second supporting portion (42) has a bent shape having substantially the same height as the first supporting shaft (1). Characterized wake-up bed. 2. The lower body support frame (30) according to claim 1, wherein, on the side opposite to the waist support end (31), the axis is substantially parallel to the first and second support shafts (1, 2). A second lower body support frame (50) rotatable about a fourth support shaft (4) having substantially the same height is provided, and the lower body support frame (30) and the second lower body support frame (50) are provided. ), Wherein the opposite end portions (32, 51) are rotatably connected to each other. 3. The lower body support frame (30A) according to claim 1, wherein the lower body support frame (30) is divided into a waist support frame (30A) and a thigh support frame (30B) at an intermediate position thereof. ) And a fifth support shaft (7) connecting the thigh support frame (30B) to each other.
Is attached to the swinging end of a swingable support arm (35) substantially corresponding to the second support portion (42) of the bending frame (40), and the second support shaft (2) is connected to the thigh. Part support frame (30
A half-rise bed which rotatably supports B).