JPH0414052Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a guard handrail structure for an elevating bed that can be stored in the ceiling, wall, etc. when not in use.

[Problems to be solved by the prior art and the invention] Today, with the diversification of lifestyles, more and more rooms are equipped with beds. However, if this bed were to be fixed, it would occupy a relatively large floor area, making it impossible to use the room effectively. Therefore, conventionally there are beds that are made to stand up or are raised so that they can be stored on a wall or ceiling. However, bed handrails that have functions such as preventing people from falling and serving as handrails when getting on and off the bed need to be higher than necessary, but if the bed is installed in the ceiling, the guard handrail will not come into contact with the ceiling. Since this is the upper limit storage position, there are inconveniences such as not being able to secure sufficient space below the bed when storing the bed.

[Means for solving the problem] In view of the above-mentioned circumstances, the present invention was devised for the purpose of providing a guard handrail structure for an elevating bed that can eliminate these drawbacks. In an elevating bed configured to move up and down between a lowered usage position and a raised storage position toward the ceiling by forward and reverse driving of an electric motor, guard handrails are provided on both left and right sides of the bed frame, and the guard The handrail is movable up and down with respect to the bed base, and is biased toward the upper working position.
A locking means for locking the bed frame in an upwardly moved operating position when the bed frame is in the operating position, and a releasing means for releasing the locking means when the bed frame is moving upward to enable downward movement by pressing the guard handrail. It is characterized by having the following.

With this configuration, the present invention is capable of automatically retracting the guard handrail when it is stored in the ceiling so that the bed surface is in close contact with the ceiling.

[Example] Next, an example of the present invention will be described based on the drawings. In the drawings, reference numeral 1 denotes a bed frame of an elevating bed, and the frame 1 is formed into a rectangular shape with side plates 1a having four sides slightly short and small so that there are gaps at the four corners, and an L-shaped reinforcing frame 1c interposed therebetween. and
The portion between each corner is covered with a corner member 20 made of a synthetic resin material or the like.
The corner member 20 includes a substantially flat inner cover 21;
It is composed of an outer cover 22 formed in a substantially semi-cylindrical shape, upper and lower caps 23, a cover bracket 22a, and a cap bracket 24. The inner and outer covers 21 and 22 are connected in a cylindrical shape so as to cover the corner portions of the side plate 1a from the inside and outside. In this way, electrical wiring can be made using the vertically penetrating intervening portions 25 formed at each corner. In addition, the combined inner and outer covers 21 and 22
The upper and lower caps 23 are covered from above and below to engage the cross-sectional shape of the cap. Further, a winding mechanism 3 is installed approximately in the center of the bed frame 1, and a winding mechanism 3 in which wires 5 disposed at the four corners pivotally support a wire drum 2 to be wound is installed, and 3a is an electric motor that drives the winding mechanism 3. be.
Reference numeral 4 denotes four guide rails installed vertically in the room, and the upper portions of the guide rails 4 are connected by a rail stay 8 to prevent sideways movement. The work of marking out the rail 4 can be omitted. The guide rail 4 is formed into a substantially C-shape, and the arm 1b of the pedestal 1 is guided on the opening side so as to be vertically slidable. Further, the upper ends of the wires 5 are each fixed above the rail 4, and the other ends are wound around the drum 2 through a plurality of pulleys 5a, and the corner members 2
The arm 1b protruding from the bed frame 1 is guided along the rail 4, and the winding mechanism 3 drives the four wires 5 to evenly wind and unwind the drum 2, so that the bed frame 1 is in a horizontal position. It is designed to move up and down. Moreover, in order to smoothly raise and lower the bed frame 1, the width of the rail groove is made wider than the arm 1b. Therefore, when the frame 1 is stored on the ceiling side, there is a risk of it becoming unstable and shaking. To prevent this, a pair of edge-shaped arm support pieces (not shown) are provided on the upper inner surface of the rail 4 at the uppermost position of the pedestal 1 so that they can be held by the arms 1b of the pedestal 1. 10
is a stopper provided movably to any position within the guide rail 4, and when the pedestal 1 is electrically lowered, the arms 1b provided at the four corners of the pedestal 1 move to the stopper 1.
By contacting and catching the bed frame 1, the lowering of the bed frame 1 is restricted and stable support is achieved.When the lowering of the bed frame 1 is restricted, the unwound wire 5 becomes slack and this The slack detection device 5b detects this and stops driving the electric motor 3a.

Reference numeral 40 denotes guard handrails provided on the left and right edges of the bed pedestal 1, and has a substantially circular shape. It is loosely fitted and can be slid vertically. The leg portion 41 is a shaft rod 4 which is installed inside the leg receiver 49 and configured such that the bullet receiver head 43a formed at the upper end is inserted into the handrail leg portion 41 from the lower side.
3, and the other end is always urged upward toward the working position by a bullet 42 supported by a bullet receiver 41a inside the leg portion 41.

45 is a lock body, and the slide pin 45a protruding from the lock body 45 is a vertical elongated hole 46 formed in a lock bracket 46 fixed to the leg receiver 49 side.
Since the lock body 45 is slidably fitted into the lock body 45, the lock body 45 is vertically movable. Moreover, the lock body 45 includes a vertical guide 45 along the vertical direction.
b, an inclined guide 45c projecting obliquely from the vertical guide 45b, a locking portion 45d formed at the lower end of the inclined guide 45c, and the lock bracket 46;
A switch acting portion 45e that acts on the micro switch 51 fixed to the micro switch 51 and a claw piece 45f bent into a claw shape at the lowermost end are shaped.

On the other hand, reference numeral 60 denotes a lock lever slidably provided between the front and rear handrail legs 41 so as to be retractable in the front and rear directions by appropriate means. The acting portion 60a facing the side is bent. Both the front and rear operating portions 60a of the lock rod 60 are biased by the ammunition 61 and are resiliently supported so as to come into pressure contact with the guide portion side of the lock body 45.

Next, the locking action of the lock body 45 and the lock lever 60 on the handrail leg portion 41 will be explained.
First, when a person sleeps, the handrail legs 41 are automatically lifted to a position that serves to prevent falls. That is, in this state, as shown in FIG. 6A, the handrail leg 41 moves upward under the urging force of the bomb 42, and the locking portion 60a is attached to the lower end of the handrail leg 41.
is bitten into the locked state and held in the working position. In this state, the lock body 45 is in the lowered position, and the switch operating portion 45 is in the lowered position.
Since the micro switch 51 is turned OFF by the action of the motor 3a, the electric motor 3a will not be driven even if the lift switch is turned ON. On the other hand, in order to raise the bed frame 1 and store it on the ceiling side,
As shown in FIG. 6B, the lock body 45 is lifted to a state where the locking portion 45d is locked to the locking lever action portion 60a. In this state, since the inclined guide 45c operates the locking lever acting part 60a in the direction of unlocking the handrail leg part 41, the downward movement restriction of the handrail leg part 41 is released and the micro switch 51 is turned to the ON side. At this point, the bed frame 1 can be moved upward by the electric motor 3a and stored in the ceiling, but at this time, the guard handrail 40 is
Since the handrail leg portion 41 has been unlocked,
It gradually descends against the force of the projectile 42 and sinks into the bed frame 1. When the bed frame 1 rises until it almost touches the ceiling surface, the lower end of the handrail leg 41 comes into contact with the claw piece 45f and is pushed down, thereby causing the locking lever action of the locking part 45d. The locking to the part 60a is released, and the handrail leg part 41 is deeply recessed into the leg holder 49 and stored as shown in FIG. 6C. Then, the micro switch 51 is turned off, the electric motor 3a is stopped, and the upward movement of the bed frame 1 is completed.

In the embodiment of the present invention constructed as described above, when a person is about to sleep, the guard handrail 40 is locked by the handrail leg part 41 being locked with the locking lever action part 60a as described above. It is locked in a working position that functions to prevent people from falling. Then, in this state, pinch the lock body 45 and press the lock body 5.
0 etc. and the locking part 45d is locked by the locking lever action part 6
If you lift it higher than 0a, the claw piece 4
5f acts on the lock lever acting portion 60a to release the lock by the lock lever acting portion 60a of the handrail leg portion 41. Then, when you release your hand from the knob 50, the locking portion 4
5d is engaged with the locking lever action portion 60a and temporarily locked. In this state, the electric motor 3a is driven to raise the bed frame 1 and store it in the ceiling. Then, when the bed frame 1 rises close to the ceiling and the guard handrail 40 comes into contact with the ceiling and is pressed, the claw piece 45f is pressed by the lower end of the handrail leg 41, locking the locking part 45d. The guard handrail 40 descends together with the lock body 45 until it is released from the action portion 60a. As a result, guard handrail 4
0 can be stored in a sunken state inside the bed frame 1, and the bed frame 1 can be stored in a high position almost touching the ceiling, making the effective indoor space as wide as possible after storage. This means that it can be secured.

In this way, when the bed frame 1 is in the storage position, the guard handrail 40 sunk inside the bed frame 1
When it is lowered for use, it automatically moves upward under the biasing force of the ammunition 42, and assumes an operating position in which the lower end is locked into the locking portion 60a. Therefore, there is no need to lift the sunken guard handrail 40 one by one. Moreover, in this state, the micro switch 51 is switched to the OFF side by the action of the lock body 45, so even if the lift push button switch is pressed by mistake, the electric motor 3a
There is no danger of the bed frame 1 being driven and the bed frame 1 suddenly rising and a person on the bed frame 1 being caught between the bed frame 1 and the ceiling. Moreover, the micro switch 51 also serves as an upper limit switch for the bed frame 1. When storing the bed frame 1, it is sufficient to lift the lock body 45 as described above.

As described above, in the present invention, although the bed frame 1 can be stored in the ceiling, the guard handrail 40 provided on the bed frame 1 does not allow the bed frame 1 to be stored in the ceiling.
The bed frame 1 can be stored at the highest possible position without being restricted by the protruding height of the guard handrail 40, since it can be automatically moved downward in conjunction with the upward movement and placed in a position where it does not get in the way. . When the bed frame 1 is lowered for use, the guard handrail 40
Since the guard handrail 40 automatically moves up and returns to the working position and is held locked, there is no need to lift the guard handrail 40 and operate the lock, which significantly improves operability and greatly improves safety. becomes.

Moreover, in the embodiment, the micro switch 51 acts as an upper limit switch when the device is lifted and an upward movement restriction switch when it is in use, due to the action of the lock body 45, so it is possible to further improve safety and simplify the structure. This will greatly contribute to the development of society.

[Function and Effect] In short, the present invention is constructed as described above, and although a guard handrail is provided on the bed frame to prevent a person from falling, this guard handrail does not fit the bed frame. When it rises, it is unlocked, and when it comes into contact with the ceiling and is pressed, it automatically moves down and sinks. Therefore, the bed frame can be stored in a state where the guard handrail is sunken, that is, at the highest possible position without being trapped by the guard handrail, and a large effective indoor space can be secured during storage, making it easier to live. You can measure sexual improvement.

[Brief explanation of the drawing]

The drawing shows one embodiment of the guard handrail structure in the elevating bed according to the present invention.
The figure is a schematic perspective view of the elevating bed, Figures 2 and 3 are a vertical sectional view and a plan view of the lock device, Figures 4 and 5 are a front view and side view of the lock body, and Figures 6A and B. ,C
7 is a front view of the corner member, FIGS. 8 and 9 are sectional views of the same side, and FIG.
0A and 0B are sectional views for explaining the same, and FIG. 11 is a perspective view of the corner of the bed frame. In the figure, 1 is a bed frame, 20 is a corner member,
21, 22 are inner and outer covers, 22a is a cover bracket, 23 is a cap, 24 is a cap bracket, 25 is a gap, 40 is a guard handrail, 41 is a handrail leg, 42, 61 is a bomb, 45 is a lock body, 51
is a micro switch, and 60 is a lock lever.

Claims (1)

[Scope of utility model registration request] In an elevating bed in which the bed frame is configured to move up and down between a lowered usage position and a storage position raised toward the ceiling by forward and reverse driving of an electric motor,
Guard handrails are provided on both left and right sides of the bed frame, and the guard handrails are movable up and down with respect to the bed frame, and are biased toward the upper operating position. A locking means for locking the bed in an upwardly moved working position when the bed is in the operating position, and a releasing means for releasing the locking means and enabling the bed to be moved downward by pressing the guard handrail when the bed is in the upwardly moving position. A guard handrail structure in an elevating bed characterized by the provision of a guard handrail structure.