JP2001037820A - Method for controlling interaction between back and knee on bed and the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To vary the timing of back-raising action and the timing of knee- raising action and prevent the angle between a back bottom and a knee bottom from decreasing more than necessary. SOLUTION: Operating power is supplied to the motors of the direct-moving drive mechanisms for a back-raising mechanism and a knee-raising mechanism in response to an operating command applied to a gatch (for raising the back and also for raising the knees) from a remote-control switch or an operation panel, and the inclined conditions of a back bottom 2a and a knee bottom 2c are grasped from detection signals generated by a means for detecting the amounts of rotation of the motors. When the knee bottom 2c has reached an angle of 20 deg. to 30 deg., the supply of operating power to the motor of the direct- moving drive mechanism for the knee-raising mechanism is shut off, and a gatching command is continued, whereby power is supplied to the motor of the direct-moving drive mechanism for the knee-raising mechanism so that the motor is activated inversely this time to lower the knee bottom 2c.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a so-called gatch bed in which the back can be raised and the knee raised, the timing of the back raising operation and the knee raising operation can be changed, and the angle between the back bottom and the knee bottom can be reduced more than necessary. The present invention relates to a method of controlling the interlocking of the back and knees in a bed or the like by making the bed more user-friendly by being configured not to fit.

[0002]

2. Description of the Related Art In recent years, beds have become multifunctional, such as so-called gatch beds, which can be raised and raised, and recently, high-low gatch beds in which the entire floor rises and falls. Further, due to the recent shortage of human resources such as nurses, electrification is progressing for labor saving.
According to the hi-low gatch bed, the patient can operate the floor undulating mechanism by himself to take a desired posture.

[0003]

The problem here is the timing of the knee raising operation relative to the back raising operation. This is because, if the back-raising operation is performed prior to the knee-raising operation, the user's body is pushed out toward the bottom of the back in the direction of the bottom of the leg, and is shifted. In some of the conventional mechanisms, the start of raising the knee is delayed with respect to the raising of the back, which has caused the body to be displaced during the gatch. In addition, when the back is raised and the knee is raised, it is necessary to configure so that the angle between the back bottom and the knee bottom is not narrowed more than necessary (for example, the angle between the back bottom and the knee bottom ≧ 90 °). The present invention has been proposed in view of such a background, and in a so-called gatch bed capable of raising the knee and raising the knee, changing the timing of the raising operation and the raising operation of the knee, and changing the angle between the back bottom and the knee bottom. It is an object of the present invention to provide a method of controlling the interlocking of the back and knee in a bed or the like by configuring the bed so as not to be narrowed more than necessary.

[0004]

In order to solve the above-mentioned problems, the present invention has a back raising mechanism and a knee raising mechanism,
The back raising mechanism and the knee raising mechanism each have a drive source, and individually adjust the inclination of the back bottom corresponding to the back and the knee bottom corresponding to the knee by an operation command, while the back bottom and the knee bottom are adjusted. In a bed or the like adapted to perform tilt adjustment, the drive source has motion amount detection means, and when performing tilt adjustment of the knee bottom together with the back bottom, from the detection signal of the motion amount detection means in the drive source, The adjustment state of the knee bottom is monitored, and when the knee bottom reaches the predetermined adjustment state, the operation of the knee raising mechanism is stopped, and the inclination adjustment of the knee bottom is continued together with the back bottom, whereby the knee bottom is adjusted to the predetermined adjustment state. Therefore, the knee raising mechanism was operated so as to reversely adjust the return. When the inclination of the knee bottom is adjusted together with the back bottom in the aforementioned bed or the like, the knee bottom adjustment operation is performed prior to the back bottom adjustment operation. Further, in the bed or the like, when performing the inclination adjustment of the knee bottom together with the back bottom, when the knee bottom reaches a predetermined adjustment state, stop the operation of the knee raising mechanism,
When the inclination adjustment of the knee bottom is continued together with the back bottom, the timing at which the knee bottom is returned and adjusted from the predetermined adjustment state can be adjusted.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a method of controlling the interlocking of a back knee in a bed or the like according to the present invention will be described with reference to the accompanying drawings, showing one embodiment. In the bed 1 shown in FIG. 1, the bottom 2 is divided into a back bottom 2a corresponding to the back, a waist bottom 2b corresponding to the waist, a knee bottom 2c from the waist to the knee, and a foot bottom 2d corresponding to the foot. Curved bottoms 2e and 2f are provided between the back bottom 2a and the waist bottom 2b and between the knee bottom 2c and the foot bottom 2d so as to be curved at appropriate curvatures. Although not shown, the back bottom 2
a While the back raising link which is a back raising mechanism is brought into contact with the back surface, the curved bottom 2 between the knee bottom 2c and the foot bottom 2d.
(f) A knee raising link, which is a knee raising mechanism, is brought into contact with the back surface, and the back raising link and the knee raising link are connected to driving means (not shown), respectively. And

For example, an electric linear drive mechanism (not shown) can be applied to the drive means. For example, a remote control switch or an operation switch provided on an operation panel for an attendant, a nurse or the like to operate. (Not shown), operating power is supplied from a controller mounted on a control box provided on a bed frame or the like in accordance with operation commands relating to raising the back, raising the knee, and raising the knee (raising the knee together with the back). The linear drive mechanism is activated to perform desired posture adjustment. The motor in the linear drive mechanism is provided with, for example, rotation amount detecting means, and supplies detection signals from these rotation amount detecting means to the controller as inclination information of the back bottom 2a and the knee bottom 2c, respectively. .

Therefore, the controller will be described below. In the controller, a control procedure is set in advance, and the detection signal by the rotation amount detecting means is subjected to signal processing based on the set procedure, and an appropriate display signal is transmitted to a remote control switch or an operation panel. The power is supplied to the motor, the power is supplied to or interrupted from the motor, and the power is supplied to start the motor in the reverse direction. That is, the controller
As a control procedure, for example, operating power is supplied to the motors of the linear drive mechanisms of both the back-raising mechanism and the knee-raising mechanism by an operation command relating to the gatch (raising with the back up) from the remote control switch or the operation panel. From the detection signal from the rotation amount detecting means of the back bottom 2
a) The inclination state of the knee bottom 2c is grasped, and when the knee bottom 2c reaches 20 ° to 30 °, the supply of operating power to the motor in the linear drive mechanism of the knee raising mechanism is cut off, and the gatch command is continued. By doing so, this time, the motor in the linear drive mechanism of the knee raising mechanism is supplied with electric power to start the reverse rotation, so that a gatch operation for lowering the knee bottom 2c is performed.

Next, the operation will be described based on the setting procedure. For example, when the bottom 2 is flat as shown in FIG. 1 and an operation command is input to perform a gatch operation by operating a remote control switch or an operation switch on an operation panel, a direct operation of both the back-raising mechanism and the knee-raising mechanism is performed. Operating power is supplied to the motor in the dynamic drive mechanism, the back-raising link and the knee-raising link are displaced, and the back bottom 2a and the knee bottom 2c are inclined (see FIG. 2). At this time, a detection signal from the rotation amount detecting means of the motor in the linear drive mechanism of both the back-raising mechanism and the knee-raising mechanism is supplied to the controller, and the controller grasps the inclination state of the back bottom 2a and the knee bottom 2c. When the knee bottom 2c reaches 20 ° to 30 °, the supply of operating power to the motor in the linear drive mechanism of the knee raising mechanism is cut off and the knee raising is stopped. As described above, since the back raising and the knee raising are performed at the same time, the pressure on the user from the bottom 2 can be suppressed, and the displacement of the body can be suppressed. Then, by continuing the gatch command, the motor in the linear drive mechanism of the knee raising mechanism is supplied with electric power to start the reverse rotation, and the knee bottom 2c can be lowered (FIG. 3, (See FIG. 4).

Although the operation has been described based on one setting procedure, the posture of the bottom 2 where the user feels the compression differs depending on the body shape of the user. And the timing of the reverse rotation of the knee bottom 2c can be changed.
For example, in the above-described setting procedure, the back raising and the knee raising are performed at the same time, but it is also possible to set so that the knee raising is performed prior to the back raising. Also, as a countermeasure against the fact that the posture of the bottom 2 where the user feels pressure varies depending on the body shape of the user, electric power is supplied to the motor in the linear motion drive mechanism of the knee raising mechanism so as to start reverse rotation, and the knee bottom 2c is provided. An adjusting means may be provided so that the timing of lowering the can be adjusted.

[0010]

As described above, according to the present invention, it is possible to reduce the pressure exerted on the body, that is, around the back and waist by the gatch operation, and further, it is not possible to send the timing of raising the knee to the raising of the back. As described above, the displacement of the body can be suppressed, and the device can be more easily used.

[0011]

[Brief description of the drawings]

FIG. 1 is a schematic side view of an essential part showing one embodiment of a bed to which a spine / knee interlocking control method according to the present invention is applied.

FIG. 2 is a schematic side view of an essential part for explaining the bed shown in FIG. 1 when the back is raised and the knee is raised.

FIG. 3 is a schematic side view of a main part for explaining the bed shown in FIG. 1 when the operation is further continued.

FIG. 4 is a schematic side view of a main part for explaining the bed shown in FIG. 1 when the operation is further continued.

[Explanation of symbols]

 1 Bed 2 Bottom 2a Back bottom 2b Waist bottom 2c Knee bottom 2d Foot bottom 2e, 2f Curved bottom

Claims (3)

[Claims] 1. A back raising mechanism and a knee raising mechanism, each of which has a drive source, and which is individually provided with a driving source, and which has a back bottom corresponding to a back in response to an operation command.
In a bed or the like that adjusts the inclination of the knee bottom together with the back bottom while performing the inclination adjustment of the knee bottom corresponding to the knee, the driving source has an operation amount detecting means, and the inclination adjustment of the knee bottom together with the back bottom is performed. When performing, from the detection signal of the movement amount detection means in the drive source, monitor the adjustment state of the back bottom and knee bottom, when the knee bottom reaches a predetermined adjustment state, stop the operation of the knee raising mechanism, together with the back bottom A knee-raising interlocking control method for a bed or the like, wherein the knee-lowering mechanism is operated so that the knee bottom is adjusted to return from the predetermined adjustment state to the reverse by continuing to adjust the inclination of the knee bottom. . 2. The method according to claim 1, wherein, when adjusting the inclination of the knee bottom together with the back bottom in the bed or the like, the knee bottom adjustment operation is performed prior to the back bottom adjustment operation. A method for controlling the interlocking of the back and knee in the bed or the like as described in the above. 3. In the bed or the like, when performing the tilt adjustment of the knee bottom together with the back bottom, when the knee bottom reaches a predetermined adjustment state, the operation of the knee raising mechanism is stopped, and the tilt adjustment of the knee bottom together with the back bottom is performed. 2. The method according to claim 1, wherein when the continuation is performed, the timing for returning the knee bottom from a predetermined adjustment state is adjusted.