JPH10165455A - Bed - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly bring up and down a back bottom and a waist bottom of a bed, by enabling one end of a back raising member to be rotatable at a bed frame in the vicinity of a waist bottom, extending the other end to the back face of a back bottom, and movably engaging the back bottom and the waist bottom. SOLUTION: When the output shaft 53 of an actuator 52 is protruded, a back raising shaft 31 is rotated counterclockwise via a back raising arm 54 and a back raising arm 40 whose base end part is attached to the back raising shaft 31 is rotated counterclockwise. Then a back bottom 21 and a waist bottom 22 on a bed frame 30 is moved to a waking-up direction, further, the back raising arm 65 is also rotated counterclockwise, a knee up arm 71 is rotated counterclockwise via an interlocking plate 75 and a knee up arm 72, the knee up arm 72 is rotated counterclockwise to push up a knee bottom 24 higher than the bed frame 30 to make the bed raising up condition.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a floor portion comprising at least a back bottom, a waist bottom, and a seat bottom, which are sequentially connected in a bendable manner, and the seat bottom is fixed to a frame side. The present invention relates to a bed in which the back bottom and the waist bottom can be raised and lowered with respect to the frame.

[0002]

2. Description of the Related Art Next, a conventional example will be described with reference to the drawings.
FIG. 6 is a main part configuration diagram showing an example of a conventional bed.

[0003] In the figure, a back portion 1, a waist bottom 2, and a seat bottom 3, which constitute a floor portion on which a patient is placed and are sequentially arranged in the body axis direction of the patient, are bent by pins 4, 5. The seat bottom 3 is fixed to a bed frame (not shown).

A slider 8 is provided at one end of a back-up link 6 as a substantially L-shaped back-up member which is rotatably attached to a bed frame using a pin 7.

On the other hand, on the surface of the back bottom 1 opposite to the patient mounting surface, there is provided a guide 9 which extends in the direction of the patient's body axis and in which the slider 8 of the back raising link 6 is movably engaged. . A drive shaft 12 of an actuator 11 which is rotatably mounted on a bed frame by using a pin 10 and which performs a linear motion, for example, a linear motor,
Is rotatably attached to the other end using a pin 13.

Next, the operation of the above configuration will be described. In the figure, a back bottom 1, a waist bottom 2, a back raising link 6 guide 9
And the like at the solid line position indicate a rising state, and the state at the two-dot chain line position indicates a sleeping state.

When the actuator 11 is driven and the drive shaft 12 is made to protrude from the actuator 11 in the sleeping state, the back lifting link 6 rotates counterclockwise about the pin 7 and the back bottom 1 and the waist bottom 2 are solid lines. It moves to the position shown by and becomes a wake-up state.

Conversely, when the actuator 7 is driven and the drive shaft 12 is moved in the direction of the actuator 7 in the wake-up state, the back lifting link 6 rotates clockwise about the pin 7, and the back bottom 1L and the waist bottom are rotated. 2 moves to the position indicated by the two-dot chain line and enters the sleeping state.

[0009]

However, in the bed having the above structure, only the pins 4 and 5 support the waist bottom 2, and when a load is applied to the waist bottom 2, these pins 5 and 5 And the back bottom 1 and the waist bottom 2 are not smoothly undulated.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a bed in which a back bottom and a waist bottom are smoothly raised and lowered.

[0011]

SUMMARY OF THE INVENTION The present invention for solving the above-mentioned problems is characterized in that the floor portion comprises at least a back bottom, a waist bottom, and a seat bottom, and each of the floor portions is sequentially connected so as to be bendable. Is fixed to the frame side, and the back bottom and the waist bottom can be raised and lowered with respect to the frame, and one end is rotatably provided on the frame near the waist bottom, and the other end is a back surface of the back bottom. A bed that extends to the back bottom and the waist bottom and movably engages on the waist bottom.

By rotating the back raising member, the back bottom and the waist bottom are raised and lowered with respect to the frame. Since the back raising member supports not only the back bottom but also the waist bottom, the back bottom and the waist bottom can be smoothly raised and lowered.

As a specific configuration, there is a configuration in which a roller that rolls on the back raising member is provided on the waist bottom according to the first aspect of the present invention. Conversely, a roller that rolls on the waist bottom may be provided on the back raising member.

[0014] In the invention according to the first aspect, the waist bottom may be provided with a sliding contact portion that slides on the back raising member.

[0015]

Embodiments of the present invention will now be described with reference to the drawings. (1) First Embodiment FIG. 1 is a side view of a bed according to a first embodiment of the present invention in a bed resting state. FIG. 2 is a top view of a main part of FIG. 1 excluding a floor. FIG. 3 is a side view of FIG. 1 in a wake-up state.

1 to 3, a floor 20 on which a patient is placed is constituted, and a back bottom 21, a waist bottom 22, a seat bottom 23, a knee bottom 24, and a back bottom 21, which are sequentially arranged in the body axis direction of the patient.
The leg bottom 25 is flexibly connected with pins 26, 27, 28, 29, respectively. And back bottom 2
1, the waist bottom 22, the knee bottom 24, and the leg bottom 25 are placed on a bed frame 30, and the seat bottom 23 is fixed to the bed frame 30.

On the bed frame 30 near the surface opposite to the patient mounting surface of the waist bottom 22 and the knee bottom 24, a back-raising shaft 31 and a knee-raising shaft 32 are arranged in a direction intersecting the patient's body axis. Are located.

The both ends of the back-raising shaft 31 are attached to the back-raising shaft bracket 3 attached to the bed frame 30.
3, 33 'and is rotatably supported. Similarly, both ends of the knee raising shaft 32 are connected to the bed frame 30.
Knee raising shaft brackets 34,3 attached to
4 'and is rotatably supported.

The back raising shaft 31 is provided with first back raising arms 40, 40 'having a concave cross section and extending toward the back bottom 21 as back raising members.

Shafts 42, 42 'are attached to the rotating ends of the first back lifting arms 40, 40', and rollers 41, 42 serving as sliders are attached to the shafts 42, 42 '.
41 'is attached.

On the other hand, on the surface of the back bottom 21 opposite to the patient mounting surface, the rollers 41, 41 'of the first back raising arms 40, 40' extend in the body axis direction of the patient and are movable. Guides 45 and 45 'are provided.

The bed frame 30 is provided with an actuator bracket 50, on which an actuator 52, which is a linear motor using a pin 51 and performs a linear motion, is rotatably mounted. The output shaft 53 of the actuator 52 and the other end of the second back raising arm 54 having one end attached to the back raising shaft 31 are connected using a pin 55.

A waist bottom support bracket 60, 60 'is attached to a surface of the waist bottom 22 opposite to the patient mounting surface, and the waist bottom support bracket 60, 60'
Rollers 61, 61 'which can roll on the first back raising arms 40, 40' are mounted.

Further, the knee raising shaft 32 is provided with a first knee raising rotatably mounted at its distal end with rollers 70, 70 'which can be brought into contact with a surface of the knee bottom 24 opposite to the patient mounting surface. The base ends of the arms 71, 71 'are attached.

The base end of the second knee raising arm 72 is attached to the knee raising shaft 32. On the other hand, the base end of the third back raising arm 65 is attached to the back raising shaft 31. Then, the second knee raising arm 72
And the distal end of the third back raising arm 65 are connected by an interlocking plate 75 using pins 73 and 74.

Next, the operation of the above configuration will be described. In FIG. 1 showing the sleeping state, the actuator 52 is driven,
When the output shaft 53 is protruded from the actuator 52, the back raising shaft 31 rotates counterclockwise in FIG.
A first back-raising arm 40 having a proximal end attached to 1
40 ′ rotates counterclockwise with the rotation of the back lifting shaft 31. Due to the rotation of the first back raising arms 40 and 40 ′, the back bottom 21 and the waist bottom 22 placed on the bed frame 30 move in the rising direction, and further, with the rotation of the back raising shaft 31. The third back raising arm 65 also rotates counterclockwise, and the knee raising shaft 32 rotates counterclockwise via the interlocking plate 75 and the second knee raising arm 72. When the knee raising shaft 32 rotates in the counterclockwise direction, the first knee raising arms 71, 71 'each having a base end attached to the knee raising shaft 32 rotate in the counterclockwise direction, and the knee bottom 24 is moved to the bed frame. Pushing up from 30 brings up the wake-up state shown in FIG.

Conversely, when the actuator 52 is driven and the output shaft 53 is moved in the direction of the actuator 52 in the wake-up state shown in FIG. 3, the back raising shaft 31 is moved via the second back raising arm 54 in FIG. , The first back raising arms 40, 40 ′ that rotate clockwise and have their base ends attached to the back lifting shaft 31 are attached to the back lifting shaft 3.
With the rotation of 1, it rotates clockwise. The rotation of the first back raising arms 40 and 40 ′ causes the back bottom 21 and the waist bottom 22 to move in the direction of the bed frame 30, and the rotation of the back raising shaft 31 causes the third back raising arm to move. 65 also rotates clockwise, and the knee raising shaft 32 rotates clockwise via the interlocking plate 75 and the second knee raising arm 72. When the back raising shaft 32 rotates clockwise, the second knee raising arms 71 and 71 ′ each having a base end attached to the back raising shaft 32 rotate clockwise, and the knee bottom 24 is placed on the bed frame 30. It moves in the placement direction, and the bed state shown in FIG. 1 is established.

According to the above configuration, the waist bottom 22 is provided on the waist bottom support brackets 60 and 60 'and the waist bottom support brackets 60 and 60' in addition to the two pins, that is, the pin 26 and the pin 27. Back raising arm 40,4
It is also supported by the first back raising arms 40, 40 'via rollers 61, 61 which can roll on the 0'.

Therefore, the back bottom 21 and the waist bottom 22 can be raised and lowered more smoothly than in the conventional example supported only by two pins. Note that the present invention is not limited to the above embodiment. In the above embodiment, the roller 61 is attached to the waist bottom 22 side.
Rollers for rolling the waist bottom 22 may be attached to the back raising arms 40, 40 '.

(2) Second Embodiment FIG. 4 is a side view of a bed according to a second embodiment when the bed is up. In FIG. 4, the same portions as those in FIGS. 1 to 3 for describing the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

The difference between this embodiment and the first embodiment is that the waist bottom support bracket 60 and the roller 61
Instead, a sliding contact portion 22a that can always slide on the first back raising arm 40 is formed on the waist bottom 22.

The operation of the above configuration is the same as that of the first embodiment. Even in such a configuration, the first
Similarly to the embodiment, the waist bottom 22 is supported not only by the two pins, that is, the pin 26 and the pin 27, but also by the first back raising arms 40 and 40 'via the sliding contact portion 60a. I have.

Therefore, the back bottom 21 and the waist bottom 22 can be raised and lowered more smoothly than in the conventional example supported only by two pins. Further, as compared with the first embodiment, the waist bottom support bracket 60 and the roller 6
Eliminating 1 can reduce the cost of parts and the number of assembling steps.

(3) Third Embodiment FIG. 5 is a side view of the configuration of the third embodiment when the bed is up. In FIG. 4, the same parts as those in FIG. 4 for describing the second embodiment are denoted by the same reference numerals, and the description thereof will be omitted.

The difference between the present embodiment and the second embodiment is that the present embodiment is provided on the rollers 40, 40 'provided on the first back raising arms 40, 40' and the back bottom 21. The guides 45, 45 'are eliminated, and sliding contact portions 40a, 40a' are formed at the rotating end of the first back raising arm 40 so as to be able to slide on the surface of the back bottom 21 opposite to the patient placing surface. Is a point.

The operation of the above configuration is the same as that of the first embodiment. Even in such a configuration, the first
Similarly to the embodiment, the waist bottom 22 is supported not only by the two pins, that is, the pin 26 and the pin 27, but also by the first back raising arms 40 and 40 'via the sliding contact portion 60a. I have.

Therefore, the back bottom 21 and the waist bottom 22 can be raised and lowered more smoothly than in the conventional example supported only by two pins. Further, as compared with the first embodiment, the waist bottom support bracket 60 and the roller 6
Eliminating 1 can reduce the cost of parts and the number of assembling steps.

Further, as compared with the second embodiment, the first embodiment
Roller 4 provided on the back raising arms 40, 40 '
Guides 4 provided on 0, 40 'and the back bottom 21
By eliminating 5,45 ', the cost of parts can be reduced and the number of assembling steps can be reduced.

[0039]

As described above, according to the bed of the present invention, one end is rotatably provided on the frame near the waist bottom, and the other end extends to the back surface of the back bottom. By providing the back raising member which movably engages on the waist bottom, the back lifting member supports not only the back bottom but also the waist bottom, so that the back bottom and the waist bottom are smoothly raised and lowered. can do.

[Brief description of the drawings]

FIG. 1 is a side view illustrating a configuration of a bed according to a first embodiment of the present invention in a bed resting state.

FIG. 2 is a top view of a main part excluding a floor in FIG.

FIG. 3 is a side view in a rising state in FIG. 1;

FIG. 4 is a side view of the configuration of the second embodiment when the bed is awakened.

FIG. 5 is a side view of a bed according to a third embodiment when the bed is up.

FIG. 6 is a main configuration showing an example of a conventional bed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 21 Back bottom 22 Waist bottom 23 Seat bottom 30 Bed frame 40 1st back raising arm

Claims (2)

[Claims] 1. A floor comprising at least a back bottom, a waist bottom and a seat bottom, each of which is sequentially coupled so as to be bendable, and wherein the seat bottom is fixed to a frame side, and wherein the back bottom and the waist are fixed. In a bed whose bottom can be raised and lowered with respect to the frame, one end is rotatably provided on the frame near the waist bottom, and the other end extends to the back surface of the back bottom, and extends on the back bottom and the waist bottom. A bed provided with a back raising member movably engaged. 2. The bed according to claim 1, wherein a roller for rolling on the back raising member is provided on the waist bottom.