JPH07184959A - Mechanism for lifting the back in bed - Google Patents

Abstract

PURPOSE:To provide the mechanism for lifting the back in bed capable of easily changing the posture without pressing the abdomen of a user at the time of lifting the back. CONSTITUTION:A matress receiving stand 8 divided into a back side receiving stand 10 on which a matress 9 is placed and a foot receiving stand 11 is fitted in the upper part of a bed frame 2 placed on the floor. The front end of the stand 10 is attached to the bed frame 2 and the back side is pivotally attached by an axis 14 and it is freely rotatably and pivotally mounted at the front end of an arm part 12 which is recessed downwards and extends upwards from the attachment part 14. A back receiving stand 10 is supported at the front end of the axis 14. A supporting member 15 is formed as a rotation point while receiving the receiving stand 10 when the arm 12 is raised and rotated.

Description

Detailed Description of the Invention

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a back raising mechanism for a bed.

2. Description of the Related Art Conventionally, beds equipped with a back raising mechanism are
The rotation fulcrum of the back support frame is a fixed point, and when the back support frame is erected and the upper body of the user lying on the bed is in a sitting position, there is a problem that a feeling of pressure is generated in the abdomen. .

The problem to be solved by the present invention is to provide a back-raising mechanism in a bed which does not give a feeling of pressure to the abdomen of the user when raising the back of the bed.

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention has a back side pedestal 10 on which a mattress 9 is placed and a leg side pedestal on which a mattress 9 is placed on an upper side of a bed frame 2 placed on the floor side. In order to provide the mattress pedestal 8 divided into the pedestal 11 and the pedestal 11, the front end side of the back side pedestal 10 is connected to the bed frame 2
The rear side is pivotally attached to the side by a shaft 14, and the front end side of an arm portion 12 which is recessed downward from the pivot portion 14 and extends upward to the front side is rotatably pivoted, and at the front side of the shaft 14, the back side is provided. A back-raising mechanism for a bed is provided, which is provided with a support member 15 that supports the pedestal 10 and that receives the pedestal 10 when the arm 12 is erected and rotated and that serves as a pivot point.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. 1 is a bed. Reference numeral 2 denotes a bed frame, which is a frame structure in which side frames 3 and 3 provided on the left and right sides are appropriately connected and fixed by connecting frames 4 and 4 in the left and right direction. Further, at the four corners of the bed frame 2, height adjustable support legs 5, 5, ... Are provided. Reference numerals 6 and 7 denote a front partition and a rear partition, respectively attached to the front and rear ends of the bed frame 2. Reference numeral 8 denotes a mattress pedestal on which a mattress 9 is placed, which is provided on the upper side of the bed frame 2. The mattress pedestal 8 is divided into at least a back side pedestal 10 for receiving the upper body side and a leg side pedestal 11 for receiving the lower body side. Reference numeral 12 denotes an arm portion having an inverted V shape when viewed from the side, and its rear end portion has the back portion side pedestal 10 and the leg portion side pedestal 11 described above.
A bracket 13 protruding from the connecting frame 4 located in the vicinity of the split portion is pivotally attached by a shaft 14 so that the front end portion is pivotally attached to the front end portion of the back side pedestal 10. Reference numeral 15 denotes a support member that abuts and supports the rear lower surface sides of both left and right side portions of the back portion side pedestal 10, and is attached to the inner portion of the side frame 3. If the support member 15 is composed of a rollable roller or the like,
It is all right that the abutting portion of the back side pedestal 10 is not damaged. Reference numeral 16 denotes a drive unit which is provided so as to be able to appropriately extend and contract and be fixedly held. The front end portion is pivotally connected to the front end portion of a projecting rod 17 projecting from the arm portion 12, and the rear end portion is connected to the connecting frame 4. It is pivotally connected to a fixed bracket 18.
The drive unit 16 may be any means such as a motor unit, oil or gas cylinder, as long as it can be expanded and contracted and fixedly held. Next, the operation of the above example will be described. First, when the back side pedestal 10 of the bed 1 in the state of the bed as shown in FIG. 1 is erected and the user wants to take a sitting posture, the drive unit 16 is extended. Then, as shown in FIG. 4, the arm portion 12 is rotated upward with the shaft 14 as the rotation axis, and the back side pedestal 10 connected to the arm portion 12 is accordingly rotated.
Will be rotated upwards. At this time, the back side pedestal 1
The rear portion of 0 is abutted and supported by the support member 15 on the front side of the rotation shaft 14 of the arm portion 12, but since this support position is slightly forward of the rear end of the pedestal 10. As the back side pedestal 10 is rotated upright, the rear end of the pedestal 10 is rotated downward and moved forward, and finally the posture is changed to the state shown in FIG. Therefore, at the final time of this posture change, the rotation fulcrum of the back side pedestal 10 is the support member 15, and the rotation fulcrum of the back side pedestal is located closer to the head side than the conventional bed, Back support 10
Since the divided portion between the leg-side pedestal 11 and the pedestal-side pedestal 11 is separated, the user's abdominal pressure is reduced. Further, as compared with the case where the rotation fulcrum of the back-side pedestal of the bed is near the support member 15, the back-side pedestal is provided with a longer front-rear length and can sufficiently receive the head of the user. . When the back side pedestal 10 is set upright, the back side pedestal 1
It is feared that the user's waist will fall into the space formed between the rear end of 0 and the front end of the leg-side pedestal 11, but the arm 12 forms a crosswise rod in this space. And plays a role in preventing depression.

As is apparent from the above description, the back-raising mechanism in the bed according to the present invention is constructed so that the space between the back-support frame and the leg-support frame gradually expands when the back is raised. As a result, there is an effect that it is possible to extremely reduce the compression interval that occurs in the abdomen of the user.

[Brief description of drawings]

FIG. 1 is an overall side view of a bed according to the present invention.

[Figure 2] Overall side view with the back raised

FIG. 3 is a partially simplified plan view showing a back raising mechanism.

FIG. 4 is a side view of an essential part showing the action of the back raising mechanism.

[Explanation of symbols] 1 bed 2 bed frame 8 mattress pedestal 9 mattress 10 back side pedestal 11 leg side pedestal 12 arm part 14 axis 15 support member

Claims (1)

[Claims] 1. A mattress pedestal 8 divided into a back side pedestal 10 on which a mattress 9 is placed and a leg side pedestal 11 is provided on the upper side of a bed frame 2 placed on the floor side. The front end side of the back side pedestal 10 is connected to the bed frame 2
The rear side is pivotally attached to the side by a shaft 14, and the front end side of an arm portion 12 which is recessed downward from the pivot portion 14 and extends upward to the front side is rotatably pivoted, and at the front side of the shaft 14, the back side is provided. A back-raising mechanism in a bed, which is provided with a support member 15 that supports the pedestal 10 and that receives the pedestal 10 when the arm 12 is rotated upright and serves as a turning point.