JP3062176B1 - Electric bed - Google Patents

Abstract

The present invention provides an inexpensive electric bed that can be automatically operated in a bent state by a single actuator with a simpler configuration than in the past. A sub-frame (2) is composed of a front frame (21), an intermediate frame (22), and a rear frame (23) that are sequentially pivoted, and a rear portion of the front frame (21) is pivotally attached to a main frame (1). The rear end of the front frame 21 is pivotally connected to the front end of the intermediate frame 22, and the intermediate frame 22 is slidably mounted on the support rod 4 in the width direction of the main frame 1. Rear frame 23
, And the rear end of the rear frame 23 is connected to the main frame 1 via a rising swing link member 9, and the front frame 21 is moved rearward downward by the electric actuator 3. The intermediate frame 22 is tilted forward and downward, and the rear frame 23 is raised.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an electric bed.

[0002]

2. Description of the Related Art An electric bed in which a horizontal frame can be automatically operated in a bent state together with a mat in an initial state has been conventionally known. Such a bed can be used to change the posture of a sleeping person to a comfortable state, if necessary, and is therefore widely used for various medical and nursing care purposes.

[0003]

In the electric bed as described above, for example, a front frame for supporting an upper body and a rear frame for supporting a lower body are respectively attached to a base frame so as to be able to undulate, and each frame is attached. And an electric actuator, which is configured to be independently raised and lowered.

However, such a configuration requires a plurality of actuators, increases the number of parts, and
Since the configuration is complicated, there is a problem that the cost is increased.

Accordingly, an object of the present invention is to provide an inexpensive electric bed which can be automatically operated in a bent state by a single actuator with a simpler structure than in the prior art.

[0006]

In order to achieve the above object, an electric bed according to the present invention comprises a main frame, a sub-frame held by the main frame, and a bendable sub-frame. stretch comprises an electric actuator that operates, the subframe, the front frame being successively pivotally connected, and an intermediate frame composed of a rear frame, pivot vicinity of the rear portion of the front frame to the main frame At the same time, the rear end of the front frame is pivotally connected to the front end of the intermediate frame, and the lower front surface of the intermediate frame is slidably mounted on the support rod of the main frame, The rear end of the intermediate frame is pivotally connected to the front end of the rear frame, and the rear edge of the rear frame is inclined backward and upward in the horizontal state of the bed.
Being vertical when the bed is folded
Through the swing link member for raising that is configured to rotate the direction, is connected to the main frame; a front end of the electric actuator, after the front frame
A tilting block fixed in a hanging manner to the lower position closer to it.
Pivot the racket and tilt the front frame backward and downward.
By moving, the intermediate frame is in front lower inclined and, as the rear frame is raised, which is constituted.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing embodiments. FIG. 1 is a side view of the electric bed B, and FIG. 2 is a side view when the electric bed B is in an upright (bent) state. The electric bed B includes a main frame 1 and a sub-frame held by the main frame 1. The vehicle includes a frame 2 and an electric actuator 3 for bending the sub-frame 2.

As shown in FIGS. 3 and 4, both sides of a rectangular outer frame 11 made of a square pipe material are used for the main frame 1.
A support rod 4 is inserted and erected substantially at the center of the pair of 111 and 111, and a pair of support pieces 5 and 5 are provided on both sides 111 and 111 of the outer frame 11 slightly behind the support rod 4 so as to project inward. At the front of both sides 111, 111 of the frame 11, a lateral reinforcing rod 12 is inserted and bridged, and between the lateral reinforcing rod 12 and the front edge 112,
A vertical reinforcing rod 13 is inserted and erected. On the other hand, a lateral reinforcing rod 14 is provided across the rear of both side parts 111, 111 of the outer frame 11, and a vertical reinforcing rod is provided between the lateral reinforcing rod 14 and the rear edge 113.
A pair of legs 6, 6 (with casters) are attached to the front edge 112 and the rear edge 113, respectively.

An electric actuator 3 is pivotally supported on a vertical reinforcing rod 13 at the front of the outer frame 11. And outer frame 11
On the part slightly forward from the center of both sides 111, 111,
Support bolts 7, 7 for pivotally attaching the front portion of the sub-frame 2 are inserted therethrough, and a bracket 8 provided at the center of the lateral reinforcing rod 14 at the rear portion of the outer frame 11 has a rear portion of the sub-frame 2. One end of a swing link member 9 for starting up is pivotally mounted.

On the other hand, as shown in FIGS. 3 and 5, the sub-frame 2 is made of a square pipe material, and is composed of a front frame 21, an intermediate frame 22, and a rear frame 23 which are sequentially connected to each other. Is done. A lateral reinforcing rod 24 is inserted and bridged at a position near the rear of both sides 211 and 211 of the front frame 21, and a vertical reinforcing rod 25 is inserted between the horizontal reinforcing rod 24 and the front edge 212. At the rear of the vertical reinforcing rod 25, a bracket 10 for tilting operation, which is made up of two plate members, is attached.

Then, both sides 211, 211 of the front frame 21
The supporting bolts 7, 7 penetrating the both sides 111, 111 of the main frame 1 are inserted into the bolt holes 26, 26 (see FIG. 5) penetrated in the vicinity of the rear part, and the washers 16, 16 are inserted. The front frame 21 is fastened to the main frame 1 so as to be tiltable by the nut members 17 and 17. Furthermore, both sides of the front frame 21
The rear end of 211 is connected to the front end of both sides 221 of the intermediate frame 22 by connecting pins 18.

A pair of lateral reinforcing rods 27, 27 are provided across both sides 221, 221 of the intermediate frame 22, and a vertical reinforcing rod 28 is provided between the two lateral reinforcing rods 27, 27. At the same time, the rear ends of both sides 221
Thereby, the front and rear portions of both sides 221 of the intermediate frame 22 are pivotally connected to the front ends of both sides 231 of the rear frame 23, and the front and rear portions of the both sides 221 of the intermediate frame 22 are supported by the support rods 4 provided on the main frame 1 respectively. It is mounted and supported on the pieces 5 and 5.

A lateral reinforcing rod 29 is erected across the front end of both sides 231 of the rear frame 23, and
A vertical reinforcing rod 30 is erected between the horizontal reinforcing rod 29 and the rear edge portion 232, and a square pipe material 20 for both reinforcement and raising is integrated below the rear edge portion 232 ( 1 and 2), a bracket 31 provided at the center of the square pipe member 20 has the other end of the swinging link member 9 for startup (one end pivotally attached to the bracket 8) pivotally connected thereto. Is being worn.

As shown in FIG. 6, the electric actuator 3 is driven by a worm wheel 37 meshing with a worm 36 fixed to an output shaft of a motor 35 via a reduction gear group 38.
The rotational force is transmitted to the screw shaft 39, and further, the slide pipe 41 integrated with the nut member 40 screwed to the screw shaft 39 is configured to linearly reciprocate, and the tip of the slide pipe 41 is moved forward. Department frame
It is pivotally attached to a tilting bracket 10 attached to 21 (see FIGS. 1 and 2).

More specifically, an extension case 43 that covers the base of the slide pipe 41 is connected to the case body 42 to which the motor 35 is attached.
A pair of limit switches 44 and 45 are attached to the slide pipe 41 by detecting the circumferentially protruding rear end 401 of the nut member 40 by the contacts 441 and 451.
The motor 35 is controlled and driven so that the moving range of the motor 35 is regulated. By stopping the motor 35, the slide pipe 41 is locked at that position by the engagement of the worm 36 and the worm wheel 37.

The above-mentioned reduction gear group 38 is provided with a manual operation section 46 having a hexagonal cross section, and is attached to and detached from the case body 42 when a trouble such as a power failure or motor failure occurs. By removing the cap 47 that is freely fitted, by rotating the manual operation unit 46 with an operating tool such as a hexagon wrench, and rotating the reduction gear group 38, the slide pipe 41 is manually moved. You can do it.

The bending and standing operation of the electric bed B constructed as described above will be described. To change from the horizontal state shown in FIG. 1 to the bent state shown in FIG. By operating the operating panel (not shown), the operation can be performed very easily without requiring any manpower. That is, when the motor 35 is driven to shorten the slide pipe 41 by a predetermined length (the direction of arrow F in FIG. 2), the front frame 21 of the sub-frame 2
However, with the support bolt 7 of the main frame 1 as an axis, the intermediate frame 22 is tilted forward and downward, and the rear frame 23 is raised and the sub-frame 2 Is in a bent state as shown in FIG. 2 and FIG.

In the course of such a bending operation, the front end of the above-described intermediate frame 22 is pushed down by the rear end of the front frame 21, so that the intermediate frame 22 moves on the support rod 4 of the main frame 1. The rear frame 23 slides slightly forward and tilts forward and the rear portion of the intermediate frame 22 is pulled away from the support pieces 5 and 5, while pulling the rear frame 23 forward. Therefore, the swing link member 9 is rotated so as to rise forward, and the rear frame 23 is raised, so that a bent state as shown in FIGS. 2 and 7 is formed. When the motor 35 is stopped, the slide pipe 41 is locked at that position by the engagement between the worm 36 and the worm wheel 37, so that the above-mentioned bent (standing) state is stably maintained.

In such a bent (standing) state, the head of the person sleeping on the mat M is placed at a high position to release from hyperemia, and the abdomen is slightly bent, so that tension is removed, and the mind and body are removed. A relaxed and comfortable posture together. In addition, since the posture of the waist changes, it is possible to alleviate rubbing on the floor and rigidity of the body of a person who has been sleeping for a long time. By placing the foot at a high position, blood circulation can be improved and edema can be eliminated.

In order to return from the bent state to the original horizontal state, the operation panel is operated to
This can be done very easily by reversing the motor 35. That is, by the reverse rotation of the motor 35,
When the slide pipe 41 is extended (in the direction opposite to the arrow F in FIG. 2), the front frame 21 tilts and returns so as to be in the original horizontal state. Returns to the state.

FIG. 8 is a side view of an electric bed B showing another embodiment. In this case, as a shape in which the front part of the front frame 21 is bent slightly upward, due to ergonomic considerations, not only when supine, but also when lying down,
It is easy to follow the shape of the human body. In other words, when lying down, the head and feet can be raised, and congestion and congestion can be prevented, and when lying down, the shoulders will not be compressed and the neck will not bend, You can relax in a comfortable position.

The present invention relates to an electric actuator 3
Not limited to the embodiment subjects tilting by, for example, although not shown, by an electric actuator 3, but it may also constitute a swing link member 9 to rotate.

[0023]

Since the present invention is configured as described above,
The following effects are obtained.

According to the first aspect of the present invention, since the sub-frame 2 is constituted by the front frame 21, the intermediate frame 22, and the rear frame 23 which are sequentially connected, a single drive source (electrically The sub-frame 2 can be bent by the type actuator 3), and the number of components can be reduced, the configuration can be simplified, and the cost can be reduced.

[0025] Also, when activating from the horizontal state to the standing state, the most to the front frame 21 requires a large driving force, because interlocked connecting actuator 3, other members of the sub-frame 2 (the intermediate frame 22 and the rear The external force acting on the connecting pins 18, 19, etc. of the frame 23 etc.) is small and reasonable.

[Brief description of the drawings]

FIG. 1 is a side view of an electric bed in a horizontal state, showing one embodiment of the present invention.

FIG. 2 is a side view of the electric bed in a bent state.

FIG. 3 is a plan view of a main frame and a sub frame.

FIG. 4 is a plan view of a main frame.

FIG. 5 is a plan view of a subframe.

FIG. 6 is a sectional view of a main part of the electric actuator.

FIG. 7 is an explanatory diagram of a bending (undulating) operation of a subframe.

FIG. 8 is a side view of an electric bed showing another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main frame 2 Sub-frame 3 Electric actuator 4 Support rod 9 Swing link member 21 Front frame 22 Intermediate frame 23 Rear frame

Claims (1)

(57) [Claims] 1. A main frame 1, a sub-frame 2 held by the main frame 1, and an electric actuator 3 that expands and contracts to bend the sub-frame 2.
Wherein the sub-frame 2 comprises a front frame 21, an intermediate frame 22, and a rear frame 23 which are sequentially connected to each other, and the vicinity of the rear of the front frame 21 is pivotally connected to the main frame 1. At the same time, the rear end of the front frame 21 is pivotally connected to the front end of the intermediate frame 22, and the front lower surface of the intermediate frame 22 is slidably mounted on the support rod 4 of the main frame 1. The rear end of the intermediate frame 22 is pivotally connected to the front end of the rear frame 23, and the rear edge 232 of the rear frame 23 is
The bed is inclined upward and backward, and the bed is folded.
The leading end of the electric actuator 3 is connected to the main frame 1 via a rising swing link member 9 which is configured to sometimes rotate in a vertical direction. , The front frame
Tilt fixed in a drooping manner to the lower position on the rear side of the arm 21
The front frame 21 is pivotally attached to the operation bracket 10.
By tilting the intermediate frame downward and backward, the intermediate frame
22 is a front lower inclined and, as the rear frame 23 is raised, an electric bed which is characterized by being configured.