JPH09252880A - Bed with floor section operation changing function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To adjust the rotation center position of a back bottom according to the physique of a user. SOLUTION: Tips of the activating arms 13a, 14a of the first and second electric actuators 13, 14 are connected to the rotation center shaft of a back bottom 10, the first and second electric actuators 13, 14 are activated to adjust the lengths of the activating arms 13a, 14a, and the position of the rotation center shaft 12 of the back bottom 10 is displaced. The locus of the rotation center shaft 12 is changed to adjust the curved degree of a curved bottom connected to the rotation center shaft 12, and the corrugated state of the back bottom 10 is made suitable for not only a normal physique person but also an obese person.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a bed,
The present invention relates to a bed having a floor movement variation function, which adjusts the rotation center position of a back bottom so as to correspond to a user's physique.

[0002]

2. Description of the Related Art Recently, more and more beds equipped with an electric floor raising / lowering mechanism have been used, and a user can lie in a desired posture by raising his / her back and legs.
Among them, in a back-raising mechanism that raises and lowers a back bottom corresponding to the back, it is generally said that the closer the rotation center of the back bottom is to the center of flexion of the waist, the less the body shift and the feeling of pressure. However, in practice, most of the structure is simply divided into a plurality of bottoms and simply connected so that they can be bent.Therefore, there are differences in the physique of the user, and the center of rotation of the back bottom and the waist It is often off the center of flexion, resulting in poor comfort due to displacement and oppression. Therefore, the present applicant arranges a floor portion (curved bottom) having a structure capable of bending at an appropriate curvature at a bent portion of the floor portion, so that the waist and the waist of the user's body can be arranged regardless of the physique. We have already commercialized a bed that can imitate a joint. In such a bed, as shown in FIG. 3, a back bottom 1 corresponding to the back is supported via a roller member 5 by an auxiliary stay 2 attached to a frame and a back-up link 4 constituting a back-up mechanism 3. And That is, when the electric actuator 6 of the back-raising mechanism 3 is activated to wake up under the control of the auxiliary stay 2, the back bottom 1 connected to the curved bottom (not shown).
Is displaced from the initial position to a position obliquely above the head side of the bed, and as a result, the curved bottom draws a gentle arc in a state of being drawn into the head side of the bed. It is curved so that it can support at least without compressing the waist of the user.

[0003]

However, in this case, since the curved bottom only bends at a predetermined curvature, the initial problem has been greatly improved, but the body shape of the user varies widely. It seems that there is still room for further improvement to fit. The present invention has been proposed in view of the above background, and in a bed, by adjusting the rotational center position of the back bottom, the floor movement variation function is further adapted to the physique of the user. It is intended to provide a bed having.

[0004]

In order to solve the above-mentioned problems, the present invention is directed to a bed provided with a back-raising mechanism, wherein the central axis of rotation of the back bottom corresponding to the back is curved from the waist to the buttocks. The bottoms are connected to each other, and this curved bottom is structured to be curved with an appropriate curvature centering on the floor width direction axis, and the rotation center axis can be moved in an appropriate locus along with the back raising operation. The locus of the central axis of rotation is configured to be adjustable, and by adjusting the locus, the undulating motion of the back bottom is adjusted, and the undulating state of the back bottom according to the body shape of the user is obtained. Further, the present invention relates to a bed provided with a back raising mechanism, wherein a curved bottom corresponding to the hip from the waist is connected to a rotation center axis of the back bottom corresponding to the back, and the curved bottom is centered on the floor width direction axis. And the leading ends of the actuating arms of the first and second electric actuators arranged at a predetermined angle to each other are connected to the center axis of rotation of the back bottom. By activating these first and second electric actuators and adjusting the lengths of the activation arms, respectively, the trajectory of the rotation center axis is configured to be adjustable, and by adjusting the trajectory, the back bottom undulating operation is performed. Adjustment was made so that the back bottom was undulated according to the user's body type.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a bed having a floor movement varying function according to the present invention will be described with reference to the accompanying drawings, with reference to one embodiment. FIG. 1 is a main part mechanism diagram around the back bottom 10 of a bed provided with a floor movement varying function according to the present invention. The back bottom 10 is
It is supported by a back-raising link 11a that constitutes a back-raising mechanism 11, and the rotation center axis 12 of the back bottom 10
The starting arms 13a, 14a of the first and second electric actuators 13, 14 arranged at a predetermined angle to each other
The first and second electric actuators 13 and 14 are activated to adjust the lengths of the activation arms 13a and 14a, respectively. In this configuration, the position of the rotation center shaft 12 is displaced.

The rotation center axis 12 of the back bottom 10 is also a connecting point with a floor (curved bottom) having a structure capable of bending at an appropriate curvature. As shown in the figure, a locus that draws an arc from point a is taken so as to reach points c and c ′. That is, the rotation center shaft 12 is composed of the first and second electric actuators 1.
By changing the rotation speeds and the movement amounts of 3 and 14, different trajectories are taken as described above. In other words, if the user has a normal body shape, the point O having a relatively small radius of curvature is used.
Are made to follow the arcs a, b, and c around the center, and in the case of an obese person, the arcs a, b ', and c' around the point O 'having a relatively large radius of curvature. I have. By changing the trajectory of the rotation center axis 12 in this manner,
The degree of curvature of the curved bottom is adjusted so that the undulation of the bottom can be adapted not only to a person of a normal body but also to a person of an obese body.

[0007] In the bed having the floor movement varying function as described above, the first and second electric actuators 13 and 14 are activated while the back raising mechanism 11 is activated. These first and second electric actuators 13 and 14
The user controls the rotation speed and the amount of movement according to the user's physique. When the back raising operation is started, the activation arm 13a of the first electric actuator 13 contracts to an intermediate point and then extends thereafter. On the other hand, the activation arm 14a of the second electric actuator 14 extends at the same time as the start of the back raising operation. By the operation of the first and second electric actuators 13 and 14, the operation of the rotation center shaft 12 of the back bottom 10 is restricted, and the rotation center shaft 12 reaches the respective reaching points c and c '. As a result, the curved bottom connected to the rotation center axis 12 of the back bottom 10 is curved at a desired curvature according to the user's physique, so that the floor can be brought into an undulating state suitable for each physique.

[0008]

As described above, according to the present invention, the degree of curvature of the bottom can be adjusted according to the physique of the user, so that a highly comfortable and easy-to-use bed can be obtained.

[0009]

[Brief description of drawings]

FIG. 1 is a schematic explanatory diagram of a mechanism around a back bottom in a bed having a floor movement varying function according to the present invention.

FIG. 2 is a functional explanatory view showing a change in a locus of a rotation center axis of a back bottom shown in FIG. 1;

FIG. 3 is an operation diagram showing an example of a current back lifting mechanism.

[Explanation of symbols]

Reference Signs List 10 back bottom 11 back raising mechanism 11a back raising link 12 rotation center axis 13 first electric actuator 14 second electric actuator 13a, 14a activation arm

Claims (2)

[Claims] 1. A bed provided with a back raising mechanism,
A curved bottom corresponding to the hips from the hips is connected to a pivot center axis of the back bottom corresponding to the back, and the curved bottom has a structure curved at an appropriate curvature about the floor width direction axis. The shaft can be moved by drawing an appropriate trajectory with the back-up operation, and the trajectory of the rotation center axis is configured to be adjustable, and the back bottom undulating operation is adjusted by adjusting the trajectory, A bed having a floor movement varying function, characterized in that the back bottom is raised and lowered according to the user's body type. 2. A bed provided with a back raising mechanism,
A curved bottom corresponding to the buttocks from the waist is connected to the rotation center axis of the back bottom corresponding to the back, and the curved bottom has a structure curved at an appropriate curvature about the floor width direction axis. The leading ends of the starting arms of the first and second electric actuators arranged at a predetermined angle to each other are connected to the rotation center axis, and the first and second electric actuators are activated when the back is raised and activated. By adjusting the length of the arm, the trajectory of the rotation center axis is configured to be adjustable, and by adjusting the trajectory, the back bottom undulating operation is adjusted,
A bed having a floor movement varying function, characterized in that the back bottom is raised and lowered according to the user's body type.