JP3134994B2 - Mechanism for interlocking the back and knees in the 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 gatch bed in which a knee-raising operation is performed prior to a back-raising operation.
The present invention relates to a back / knee raising interlocking mechanism in a bed.

[0002]

2. Description of the Related Art Conventionally, various types of gatch beds (beds having functions of raising the back and raising the knee) have been commercialized.
It is actively used as a convenient function for both users and caregivers in treatment.

[0003]

However, in the above-mentioned gatch bed, the back-raising operation and the knee-raising operation are usually performed almost synchronously. Was caused. Because while the back angle rises about 70 degrees,
This is because the knee-raising angle is averagely driven in synchronization with about 10 degrees, and when viewed from the relative driving angle, the back-raising advance operation is substantially performed. The present invention has been proposed in view of such a background, and in a gatch bed, by performing a knee-raising operation prior to a back-raising operation, a shift of a user's body is suppressed. It is another object of the present invention to provide a mechanism for interlocking a back and a knee in a bed.

[0004]

In order to solve the above-mentioned problems, the present invention provides a gatch bed, which comprises a back raising mechanism and a knee raising mechanism in the gatch bed.
These back-raising mechanism and knee-raising mechanism are driven via interlocking members.
Moving mechanism, the interlocking member and the back-raising mechanism and above the knee
Are the first and second movement directions of the drive mechanism, respectively.
If the structure is such that it can be moved via two long holes,
In both cases, the back lifting mechanism is restrained by the
While the knee-raising mechanism is restrained,
A switching means for performing the raising operation is provided, and the back raising operation and the knee are performed.
When performing the lifting motion, at least open the knee raising mechanism.
The beginning was made to precede the back raising mechanism. Further, the present invention includes a back-raising mechanism and a knee-raising mechanism.
The mechanism and the knee raising mechanism are linked by an interlocking member, and
In a gatch bed in which a drive mechanism is connected via a member , the bottom has a back bottom corresponding to the back, a curved bottom disposed from the waist to the bottom and below the knee, and a foot bottom corresponding to the shin. And the back lifting mechanism is the back bottom
A back-raising link that abuts the knee;
There is a knee-raising link that contacts the curved bottom corresponding to the back
The interlocking member includes a back-raising link and a knee-raising link.
Interlocking stays that transmit direct power from the drive mechanism to the
Select a back-up link or a knee-up link for the interlocking stay of
A swinging rod for selectively restraining the linking stay;
And the drive mechanism is longer than the first hole.
A second elongated hole having a size corresponding to the operation stroke of
The leading end side of the operating arm in the back-raising link is engaged with the first elongated hole.
While being movably mounted via a stop shaft, the second elongated hole
The tip side of the working arm at the knee raising link via the locking shaft
So that it can be mounted movably,
To lock the locking shaft at the tip of the operating arm in the link
Release the lock shaft on the tip of the working arm at the knee raising link
By doing, only the back-up operation is performed, and the back-up link
Release the locking shaft at the tip of the working arm,
By constraining the lock shaft on the tip side of the operating arm in the link,
Perform the interlocking motion of the back and knee, and
The interlocking movement is a knee raising
Start the knee-raising motion by linking
The locking shaft on the tip of the working arm in the back-raising link
Move along the hole so that the locking shaft abuts the end of the first slot
To start the back raising operation.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a back and knee raising interlocking mechanism in a bed according to the present invention will be described with reference to the accompanying drawings. FIG. 1 shows a back / knee raising interlocking mechanism 1 in a bed. The back / knee raising interlocking mechanism 1 is configured to be able to switch between only the back raising operation and the back / knee raising interlocking operation. The bottom 2 in the bed includes a back bottom 2a corresponding to the back,
It is composed of a curved bottom 2b arranged from the waist down to the back of the knee, and a foot bottom 2c corresponding to the shin.
In the bottom 2, an intermediate portion of the curved bottom 2b is fixed to a main frame (not shown). And the interlocking arm 3 of the back raising link 3 is provided on the back bottom 2a.
a, an interlocking arm 4a of the knee raising link 4 abuts against the curved bottom 2b corresponding to the back of the knee, and the operating arm 3b of the back raising link 3 and the operating arm 4b of the knee raising link 4 -The knee raising interlocking mechanism 1 is connected. The curved bottom 2b is formed by, for example, sequentially connecting a plurality of strip-shaped members so as to be bent at a predetermined angle, and is configured to be able to bend at an appropriate curvature as a whole.

Therefore, the back and knee raising interlocking mechanism 1 will be described.
That is, the back / knee-raising interlocking mechanism 1 includes an interlocking stay connected to the end of a linear motion drive mechanism 5 and a distal end of a linear motion shaft 5b that linearly moves in the axial direction by activating a motor 5a constituting the linear motion drive mechanism 5. 6, the back raising link 3 and the knee raising link 4 are connected so as to be interlockable. A first end for movably attaching the distal end side of the operating arm 3b of the back-raising link 3 to the interlocking stay 6 via a locking shaft S3.
A second hole for movably attaching the long hole 7 and the distal end side of the operating arm 4b in the knee raising link 4 via the locking shaft S4.
A long hole 8 is formed. When the bottom 2 is in a flat state, the operating arm 3b of the back-raising link 3 is on the left end side of the first elongated hole 7 of the interlocking stay 6 in FIG.
Also, the tip side of the operating arm 4b in the knee raising link 4 is
It is set to be located on the left end side of the second elongated hole 8 in the interlocking stay 6. In this case, the length of the second long hole 8 is set so as to match the operation stroke of the direct drive shaft 5b in the direct drive mechanism 5, and the length of the first long hole 7 is changed to the second length. The length is set shorter than the length of the hole 8.

In the middle of the interlocking stay 6, a swinging rod 9 for selectively restraining the operating arm 3b of the back-raising link 3 and the operating arm 4b of the knee-raising link 4 can be swung. Attached to. This swinging rod 9
A switching lever 10 for swinging the swinging rod 9 is protrudingly provided at the center of the arm 3b. Hook portions 9a and 9b are provided for locking the operating arm 3b of the back-raising link 3 and the operating arm 4b of the knee-raising link 4 by locking to the locking shaft S4 on the distal end side of the operating arm 4b of the link 4. .

The back / knee raising interlocking mechanism in the bed according to the present invention is configured as described above. Next, the operation thereof will be described. First, in order to raise only the back, the switching lever 10 is moved from the state where the bottom 2 is flat as shown in FIG.
Is operated to displace the swinging rod 9, and the hook 9 of the swinging rod 9 is moved.
a is brought into contact with the locking shaft S3 on the distal end side of the operating arm 3b of the back-raising link 3 to restrain it from moving on the left end side of the first elongated hole 7 of the interlocking stay 6, while operating the knee-raising link 4. From the locking shaft S4 on the tip side of the arm 4b,
The hook 9b of the swinging rod 9 is released. In this state, when the motor 5a constituting the linear drive mechanism 5 is started and the linear drive shaft 5b is moved backward to the motor 5a side, the interlocking stay 6 moves to the left in the drawing, so that Back raising link 3
Since the locking shaft S3 on the distal end side of the operating arm 3b is pressed to the left, it is displaced clockwise, and the back bottom 2a is inclined by the interlocking arm 3a of the back-up link 3, so that the back is up. On the other hand, the hook-up link 4 is disengaged from the hook portion 9b of the swinging rod 9 from the locking shaft S4 on the tip side of the operating arm 4b of the knee-up link 4, so that the knee-up link 4 is And the locking shaft S4 at the distal end side of the operating arm 4b of the knee raising link 4 has a second length equal to the operation stroke of the translation shaft 5b of the translation drive mechanism 5. It merely moves along the hole 8, and the curved bottom 2b corresponding to the sole of the knee and the foot bottom 2c corresponding to the shin remain flat as they are (see FIG. 2).

Next, when raising the knees together with raising the back, as shown in FIG. 3, from the state where the bottom 2 is flat, the switching lever 10 is operated to displace the rocking rod 9 so that the rocking rod 9 is displaced. 9
The hook portion 9a is disengaged from the locking shaft S3 on the distal end side of the operating arm 3b of the back-up link 3, while the knee-up link 4
The hook portion 9b of the swinging rod 9 is locked on the locking shaft S4 on the tip side of the operating arm 4b. In this state, when the motor 5a constituting the linear drive mechanism 5 is started and the linear drive shaft 5b is moved backward to the motor 5a side, the interlocking stay 6 moves to the left in the drawing, so that Since the locking shaft S4 on the tip side of the operating arm 4b in the knee raising link 4 is pressed to the left,
With the clockwise displacement, the curved bottom 2b and the foot bottom 2c corresponding to the shin are bent upward and inclined by the interlocking arm 4a of the knee raising link 4, and the knees are raised (FIG. 4). reference). On the other hand, on the back-raising link 3 side, the locking shaft S3 on the tip side of the operating arm 3b in the back-raising link 3 moves from the left end side of the first elongated hole 7 to the right end side.
During this movement, the back raising link 3 is in a state of being cut off dynamically with respect to the interlocking stay 6, so that the back bottom 2a is in a flat state.

The linear drive shaft 5 of the linear drive mechanism 5
When the b is retracted toward the motor 5a, the locking shaft S3 at the distal end of the operating arm 3b of the back-raising link 3 abuts on the right end of the first elongated hole 7, so that the interlocking stay 6 The movement is transmitted to the back-raising link 3 side, and the locking shaft S3 at the tip end of the operating arm 3b in the back-raising link 3 is pressed to the left. The back bottom 2a is inclined by the interlocking arm 3a, and the back is raised (see FIG. 5).

As described above, the back-raising link 3 and the knee-raising link 4 can be freely and selectively restrained with respect to the interlocking stay 6, and the dimensions of the first elongated hole 7 and the second elongated hole 8 can be respectively adjusted. With the setting, when the back-raising link 3 and the knee-raising link 4 are linked to perform the back-raising knee raising operation,
By setting the knee-raising link 4 in a restrained state prior to the back-raising link 3, the knee-raising can be performed prior to the back-raising, and the user's body can be prevented from slipping.

[0012]

According to the present invention, the knee-raising operation is performed in advance of the back-raising, so that the displacement of the body in the foot direction can be suppressed when the back is raised. The comfort is further improved.

[0013]

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing one embodiment when only a back is raised in a back / knee raising interlocking mechanism in a bed according to the present invention.

FIG. 2 is a schematic side view illustrating the back / knee raising interlocking mechanism in the bed shown in FIG.

FIG. 3 is a schematic side view illustrating a back and knee raising interlocking operation in the bed and knee raising interlocking mechanism of the bed according to the present invention.

FIG. 4 is a schematic side view showing a state in which the back and knee raising interlocking mechanism in the bed shown in FIG. FIG.

5 is a schematic side view illustrating a state in which the interlocking operation of the back and knees in the bed shown in FIG. 1 is operated to the limit.

[Description of Signs] 1 Back and knee raising interlocking mechanism 2 Bottom 2a Back bottom 2b Curved bottom 2c Foot bottom 3 Back raising link 3a, 4a Interlocking arm 3b, 4b Working arm 4 Knee raising link 5 Linear drive mechanism 5a Motor 5b Direct Moving shaft 6 Interlocking stay 7 First elongated hole 8 Second elongated hole 9 Swinging rod 9a, 9b Hook 10 Switching lever S3, S4

Claims (2)

(57) [Claims] In a gatch bed, a back raising mechanism and a knee raising mechanism are provided, and the back raising mechanism and the knee raising mechanism are connected to a driving mechanism via a linking member.
The backing mechanism and the knee-raising mechanism are
Moveable through the first and second long holes in the direction of movement of the frame
And the backing mechanism is attached to the interlocking member.
To raise the back while restraining the knee raising mechanism
Then, a switching means for performing the back-raising operation and the knee-raising operation is provided, and a small amount of
At least, start the operation of the knee raising mechanism before the back raising mechanism.
An interlocking mechanism for raising the back and knees in the bed, characterized in that it is made. 2. A vehicle comprising a back raising mechanism and a knee raising mechanism,
These back-raising mechanism and knee-raising mechanism are linked by interlocking members.
The bed, the bottom is a back bottom corresponding to the back,
From the waist to the bottom, a curved bottom disposed at a position from the knee back, and a foot bottom corresponding to the shin, the back raising mechanism is
A back-up link that abuts the back bottom;
The lifting mechanism is to raise the knee to abut the curved bottom corresponding to the back of the knee.
A link, wherein the interlocking member includes a back-up link, and
Interlock switch that transmits direct power from the drive mechanism to the knee-raising link
The link and the link or the knee
A swinging rod for selectively restraining the link;
The first slot is longer than the first slot,
A second length having a dimension corresponding to the operating stroke of the drive mechanism
A hole is provided, and an operating arm at a back-raising link is provided in the first slot.
While the tip side is movably mounted via a locking shaft,
Locks the distal end of the working arm in the knee lift link to the second slot
So as to be movably mounted via a shaft, and
The locking shaft at the tip of the working arm in the back-raising link.
Bundling while locking the tip of the working arm at the knee raising link
By releasing the axis, only the back-up operation is performed,
While releasing the locking shaft on the link arm tip side on the link,
Restricts the lock shaft on the tip of the working arm in the knee raising link
By doing so, the back and knee raising interlocking movement is performed, and this
The interlocking movement of the back and knees was restrained by an interlocking stay.
When the knee raising operation is started by linking the knee raising link
At the end of the operating arm at the open back link
The shaft is moved along the first slot so that the locking shaft is at the end of the first slot.
Back-knee lifting interlock mechanism in the beds, characterized in this <br/> and which is adapted to start the back-up operation by abutting the part.