JPH0653087B2 - Tilting bed - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tilting bed. Conventionally, as a tilting bed of this type, as can be seen in JP-A-55-19125, a bed base is laterally and laterally arranged. It is divided into three rows, and each divided row bed base is pivotally connected by a vertical pin to make it bendable, and the left side or the right side of the back of the central row bed base is pushed up by a push-up device to tilt and roll over. Tilt beds have been known that operate in a convenient manner.

However, in the bed of this conventional device, when the center row bed is tilted, the left bed or the right bed located on the tilting upper end side is tilted in the same tilted state following the center bed. Was there. This may cause an unexpected situation in which the mat, bedding, sheets, etc. laid on the upper part of the bed slip off, or when the bed is tilted toward the edge of the bed, There was a drawback that it was dangerous to roll over.

Therefore, conversely, if the center row bed and the left and right bed beds remain bent in a V-shape, a sleeping person may fall down from the bed to the outside or have a safety frame. However, there is a drawback of being caught in this safety frame.

The present invention is intended to solve the above-mentioned drawbacks, and has the following technical means.

That is, the bed base (8) is divided into three rows in the left-right lateral direction, and the left and right bed base parts are separated from the center row bed base part (A).
(B) and (c) are provided so that they can be bent up and down, and by a proper operation of the push-up device (M) provided at the bottom of the bed base (8), the left side of the center line of the central row bed base (A) is shifted to the left. In a bed that can be turned over to tilt the central row bed base (A) by pushing up the central portion or the right side portion, tilting when pushing up the central row bed base (A) and tilting. In the middle of the operation, the left side bed bed part (B) or the right side bed bed part (C) located on the inclined upper end side of the central row bed base (A) and on the inclined upper end side of the central row bed base (A). The tilting bed has a structure in which a horizontal holding mechanism (P) for holding the bed base portion in a substantially horizontal state is provided at the time point of contact with and the tilting operation is completed.

An embodiment of the present invention will be described in detail with reference to the drawings.

(1) is a bed frame, a pair of legs (2a) on the left and right, (2b) the gate-type frame (3) is fixed to the front and rear,
The side frames (4a) and (4b) are fixed to the outside of the side frames, and the horizontal bars (5), (6), and (7) are fixed between the left and right side frames (4a) and (4b). It is fixed in the space.

(8) is a bed stand, and the center row bed stand A is located in the middle part between the left and right sides.
Is divided into three rows by providing a left side bed bed section B on the left side and a right side bed bed section C on the right side, and each of these rows is a, b, c, d rows and 4 in the front-rear direction. Divide and total Aa, Ab, Ac, Ad, Ba, Bb, Bc, Bd, Ca, Cb, Cc, Cd
It is divided into 12 sections, and the front and rear and left and right adjacent parts of each of these bed stand pieces are horizontal pins (9), (9) ... and vertical pins (10), (10) ... ..By means of which it is pivotally attached.

Further, the bed base (8) is provided in a substantially size which can be installed on the bed frame (1).

(11) and (12) are lateral shift prevention plates, which are fixed to the insides of the back surfaces of the bed pedestals Bb and Cb in a figure-eight shape so as to spread outward as they extend downward.

Next, the push-up device will be described. In the embodiment, the push-up device is composed of a bed-turning push-up device M and an undulating push-up device N.
Both are operated by the forward and reverse rotation of a single motor (13).

First, the embodiment of the push-up device M for turning over will be described.
(a) is a left-side turning pipe, (14b) is a right-side turning pipe, and brackets (15), (16), (1) are attached to the horizontal rails (5), (6), respectively.
It is rotatably installed via 7) and (18).

Reference numerals (19a), (19b), (19c), and (19c) are right-side push-up arms that push up the right side of the bed base, respectively, and the left-side turning pipe (14
The base is fixed to a), the tip side is extended to the right, and the rollers (20), (20) ... Are rotatably fixed to the tip.

(21a), (21b), (21c), and (21d) are left-side push-up arms that push up the left side of the bed base, respectively, and the right-side turning pipe (14
Attached to b), rollers (20), (20) ... Are rotatably fixed to the tip end portion, like the right-side push-up arm (14a).

The left and right turning pipes are the motors.
They are connected to each other by (13) so that they are operated as follows.

That is, the motor (13) is supported by being suspended below the left and right middle portion of the horizontal rail (7), and its output shaft is provided with a brake to stop the rotation immediately when the power is turned off. A screw shaft (22) of a specified length is fixedly attached, and this screw shaft (22) is installed horizontally in the front-rear direction at the left-right intermediate portion of the bed frame (1), and the tip end thereof is a horizontal rail (5). Is supported by.

(23) is a screw cylinder, which is screwed to the same shaft (22), and the rotation preventing function of the screw cylinder (23) and the normal rotation of the motor (13) described later are provided on the upper surface of the front and rear intermediate portions. A protruding piece (24) that performs the switching function of turning on and off each of the reverse and stop switches
Is erected.

(25) is a cam plate for turning over, and a racket-shaped cam hole (25a) is formed in an iron plate having a substantially boat shape in plan view, and the wide hole on the front end side to the narrow hole on the rear end side is formed. The cam plate (25) is formed with recesses (a) and (b) that can be engaged with pins on both left and right sides.
Put the boat-shaped tip of the pin on the upper surface of the screw cylinder (23) in the vertical direction.
It is pivotally attached at (26).

The projection piece (24) projects upward from the cam hole (25a) of the cam plate.

(27) is a pin projecting to the back side of the cam plate (25).
It is for switching (25) to the left and right and rotating.

(28) and (29) are the left and right turning pipes (14a) and (14b), respectively.
The bell crank is connected to the bed frame (1) with a pin (3
0) and (31), and the bell crank (2
Actuating pins (32), (33) penetrating near the left and right sides of the cam hole (25a) of the cam plate (25) are provided on the free end sides of 8) and (29).

(34) is a rotation operating rod of the cam plate (25), which bends a part of a rod member rotatably installed on the horizontal rails (5) and (6) upward,
A metal fitting (35) fixed to a protruding pin (27) on the back surface of the cam plate (25) is fitted in this portion by forming an inverted U-shaped cutout portion, and the rotation operating rod (34) is The left and right turnover switching levers (37a) and (37b) provided on the left and right sides of the gate-shaped frame (3) via connecting rods (36) each had a lever shaft (38) and an absorber (80). It is linked via a link. The shaft (38)
Is provided so as to be held by being rotated leftward or rightward by the tumbler mechanism (90).

The cam plate (25) is moved in the arrow (c) direction or the arrow (d) by the turning operation of the turnover switching lever (37a) or (37b).
It is configured to switch to either side of the direction.

Next, the levitation push-up device N will be described. (39a) is a front turning pipe, (39b) is a rear turning pipe, and they are located under the left and right turning pipes (14a), (14b), respectively. They are orthogonal to each other and laterally installed with a predetermined space in the front and back, and can be freely rotated via brackets on the side frames (4a), (4b) or the horizontal rails (5), (6). The left and right turning pipes are installed
(14a), (14b) and the front and rear turning pipes (39a), (39b) in the plane surrounded by the projecting piece standing on the screw cylinder (23)
It is provided so that (24) is located.

(40a) and (40b) are front push-up arms that push up the front side of the bed base.The base is fixed to the front turning pipe (39a) and the tip is directed forward, and the same roller (20) as described above is attached to the tip. ) Is rotatably attached. (40c) is the front push-up arm (40a)
A central front-side push-up arm attached to the right and left intermediate portions of the front frame (41) connecting with the (40b), and the roller (20) is also attached to this tip.

(42a), (42b), (42c) are rear push-up arms for pushing up the rear side of the bed base, the base being fixed to the rear turning pipe (39b), and the tip end. Is provided toward the rear. Incidentally, (43) is a connected rear frame for mounting the central push-up arm (42c).

Reference numeral (44) is a rear drive arm whose base is fixed to the rear turning pipe (39b) and whose tip is located on one side surface of the screw cylinder (23).

(45) is a pipe which is rotatably fitted to the rear turning pipe (39b).
It is a front drive arm whose base is fixed to (46) and whose front end is positioned on the side surface of the screw cylinder (23) opposite to the drive arm (44). Reference numeral (47) is a link which is interposed between the pipe (46) and the front rotating pipe (39a) so that the rotating pipe (39a) can be rotated opposite to the rotation of the pipe (46). It is configured.

(48a), (48b) is a cam plate for undulation operation, an engaging recess (in the side view of a substantially triangular iron plate in the front-rear direction, long in the front-rear direction, and a pin can be rearwardly engaged with the front-rear intermediate upper edge portion ( (E) and (c) are provided with cam holes (49a) and (49b) formed, and the rear end sides of the cam plates (48a) and (48b) for both undulating operations are It is pivotally attached to the left and right sides of the screw cylinder (23) with pins.

The pin (50) implanted in the front drive arm (45) is inserted into the cam hole (49a) of the cam plate (48a), and the cam hole (49b) of the cam plate (48b) is inserted into the cam hole (49b). Pins implanted in the drive arm (44)
(51) is configured to be inserted.

(52a), (52b) is a switching lever for ups and downs, the side frame
It is located outside of (4a) and (4b) and is attached to the frame by the shaft (52). The shaft (53) that passes through the lower side of the undulating cam plates (48a), (48b) and is rotatably installed on the horizontal rail (5) via a bracket is used as an absorber.
Connected by a link having (80), the cam plates (48a), (48b)
The eccentric crank pin (54
a), (54b) and fasten the switching levers (52a), (52b) to the front,
By rotating the cam plates (48a) and (48b) at the same time, the cam plates (48a) and (48b) can be switched up and down separately by switching later.

Reference numerals (55a) and (55b) are holding guide plates that hold the protrusion pieces (24) from both the left and right sides, and are extended between the horizontal rails (5) and (6) and attached. Incidentally, (91) indicates a tumbler mechanism.

Next, the electric control circuit of the motor (13) will be described in detail. LS ₁ , LS ₂ , LS ₃ , and LS ₄ are limit switches, respectively, which are attached to the upper surface of the guide plate (55b). The limit switch is incorporated in the electric circuit shown in FIG.

That is, in the electric circuit, PB ₁ , PB ₂ and PB ₃ are push button switches, which are provided in the hand switch box (56) in the embodiment. , Indicate electromagnetic relays.

The LS ₁ and LS ₂ limit switches are b-contact type limit switches that are normally closed.

LS ₃ and LS ₄ have two contacts, and the contacts are closed and opened alternately. The circuit that connects the a-contact type pushbutton switch PB ₃ and each of the above relays that opens normally. The other b-contact type is inserted in the circuit between the limit switch LS ₁ and the relay and in the circuit between the limit switch LS ₂ and the relay.

The projection piece (24) is connected to the guide plates (55a) and (55
When it is located on the front side (opposite the motor side) from the front and rear intermediate part of the guide groove m between and b), LS ₃ is pushed in to open the circuit between push button switch PB ₂ and the relay, while push button switch The circuit between PB ₁ and the relay is closed, and instead, the circuit between the pushbutton switch PB ₃ and the relay is opened, and the circuit between the relay and PB ₁ is closed.

On the contrary, when the projection piece (24) is positioned from the front-rear center of the guide groove m to the rear side (motor side), the limit switch LS ₄ is always pushed in so that the circuit reverse to the above is closed. ing.

Moreover, when the protruding piece (24) further moves to the front end, LS ₁ is pushed in and turned off, and the relay circuit is opened.
It is provided so that when it moves to the rear end, LS ₂ is pushed in and turned off, and the relay circuit is opened. Motor (13)
Is represented by the symbol in the circuit, and the forward rotation side terminal X
And a reversing side terminal Y. Connect the relay a-type contact R ₁ and the relay b-type contact L ₂ to the terminal X, and connect the relay a-type contact L ₁ and the relay b-type contact R ₂ to the terminal Y. Connected to.

The symbol (57) in the figure is a box in which the controller part of the electric control circuit is installed.

Although the push-up device is configured as described above, the bed base (8) when the bed base (8) is placed on the upper part of the bed frame (1) including the push-up device and pushed up by the push-up device. left,
Horizontal holding mechanism P that holds the bed in the right column horizontally
An example will be described.

First, the first means is to use the vertical pins (10), (10), etc. of the central row bed rest A of the bed rest (8) itself and the left and right row bed rests B, C located on the left and right sides thereof. As shown in FIG. 3, when the center row bed base A is pushed up and tilted between the pivotal portions, the left and right row bed bases B and C are substantially horizontal. Locking pieces (58) and (59) are provided that rotate and do not allow further rotation. In the example shown in the figure, the locking pieces (58) and (59) are projected downward from the outer surface of the bent side wall of the bed base piece to form the abutment portion, but the bent side wall is extended downward to fold the bed base piece. It may be the one that abuts the outside of the bent side wall itself, and further, as shown in FIG. 14, simply,
Since it is necessary to make the thickness of the bed base piece considerably thick in order to bring the outer walls of the bed base piece into contact with each other, a reinforcing plate (60a) bent at the corner of the bed base piece in an L shape in plan view. ), (60
If b) is provided and brought into contact with it, the bed base piece can be made strong, which is extremely convenient.

Next, as a second means, as shown in FIG. 15, the right-side pushing arms (19a), (19b) (19c), (19
d) or left push-up arm (21a), (21b), (21c) (21d)
In addition, the side row push-up arms (61a), (61a) that push up the bed stand pieces of the left and right side rows slightly later than the push-up operation of the center row bed stand.
The configuration may be such that a), ... Or (61b), (61b). In this case, the side row push-up arms (61a), (61a) ... or (61
The base parts of b), (61b), ... May be separately fixed to the left and right pivot pipes (14a), (14b).

Reference numerals (62) and (63) denote fitting holding frames to which lateral shift prevention plates (11) and (12) fixed to the lower portions of the bed pieces Bb and Cb are fitted, respectively, and the upper portions spread out in a V shape in a front view. It consists of two plates,
The front and rear ends thereof are fixed to the cross rails (5) and (6).

In the figure, (64) is a front screen and (65) is a rear screen, which are fixed to the front and rear ends of the side frames (4a) and (4b), respectively.

(66a) and (66b) show all draft frames which are detachably installed on the side frames (4a) and (4b).

(67), (68), (69) and (70) are pedestals that support the back surface of the bed table (8).

Next, the operation of the above example will be described. First, the bed base
Place (8) on the bed frame (1). At this time, the lower part of the bed base (8) is the upper surface of the front and rear gate-shaped frame (3) and the receiving base (6
7), (68), (69), (70) and rollers that are fixed to each push-up arm.
Supported by (20), (20), and held in a substantially horizontal state, the lateral shift prevention plates (11) and (12) projecting from the lower portions of the bed pieces Bb and Cb are the fitting holding frames. It is held by (62) and (63) so that lateral displacement does not occur.

Next, a mat and a futon are laid on the bed stand (8), and the sick person and the elderly are put to sleep.

In this state, it is possible to easily turn over the bed for nursing, such as changing the sheets or the oshishi, by the following operation.

First, to turn over to the left, turn over lever (37a)
Alternatively, when (37b) is tilted to the left, the cam plate (25) is moved through the lever shaft (38), the absorber (80), the rotation operating rod (34), the metal fitting (35) and the pin (27) to the arrow ( D) Rotate in the direction. Therefore, as shown in Fig. 10, the operating pin on the side of the bell crank (28)
The (32) is held in contact with the left side surface of the cam hole (25a). When the push button switch PB ₁ is pressed in this state, the relay is excited, the relay contact L ₁ is closed, and the motor (13) rotates in the reverse direction (counterclockwise rotation).

Therefore, the screw cylinder (23) is transferred to the tip end side of the screw shaft (22), and at this time, the operation pin is placed in the recess (a) formed on the left side surface of the cam hole (25a) of the cam plate (25). (32) is fitted and locked, and the bell crank (28) is rotated around the pin (30) to rotate the left side rotation pipe (14a) in the arrow (g) direction via the link.

Then, the right-side push-up arms (19a), (19b), (19c), and (19d) fixed to the left-side turning pipe (14a) are swung upwards all at once, and the rollers ( 20), (20) ... are closer to the right side of the bed portion A in the central row, more specifically, bed piece A
It will push the back side of a, Ac, and Ad toward the right side.

Therefore, as shown in FIG. 4, the entire central row bed stand portion A is in a state in which the lateral slip prevention plate (11) protruding on the back surface of the bed stand piece Bb is engaged and held by the fitting holding frame (62). Tilt so that the right side can be swung up.

At this time, each bed bed piece of the right side bed bed section C connected to the right side of the central row bed bed section A gradually becomes a V-shape when viewed from the front with respect to the central row bed bed section A, and at the end. Is a locking piece (58) fixed to the opposite outer wall surfaces of the bed piece.
And (59) are in contact with each other, and the bed section C on the right column is
Shake as shown in Figure 14. At this time, the locking pieces (58), (59) work as the horizontal holding mechanism P, and the right side bed base C
Will be held in a substantially horizontal state.

Also, when reinforcing plates (60a) and (60b) are provided instead of the locking pieces (58) and (59), the reinforcing plates (60a) and (60b) are also held horizontally in the same manner. It

Furthermore, when the side row push-up arms (61a), (61a), ... Or (61b) (61b). ), (61a) ... pushes up the bed bed piece in the right row after the right lifting arm (19a), (19b), (19c), (19d), and in this case also, the right bed bed section C It is held in a substantially horizontal state.

When pushing up to this state, screw cylinder (2
Since the projection piece (24) also moves with the movement of 3), this projection piece
(24) pushes the limit switch LS ₃ and pushbutton switch PB ₂ → The contact of switch LS ₃ in the relay circuit is turned off.
Then, the contact of switch LS ₃ in the pushbutton switch PB ₃ → relay circuit is turned on. And finally,
And protruding pieces (24) of the limit switch LS ₁ and pushing the limit switch LS ₁ is OFF, the left rotation of the excitation of the relay is released the motor (13) is stopped. This state is when the right-hand side bed base C is held in a substantially horizontal state.

Then push the pushbutton switch to restore the left turn state.
It is good to push in PB ₃ , and in this case the relay is excited, so relay contact R ₁ turns ON and R ₂ turns OFF, and the motor (13) rotates to the right, which is a forward rotation. Therefore, since the screw shaft (22) rotates clockwise, the screw cylinder (23)
(22) is moved to the base side and the left side turning pipe (14a) is rotated in the opposite direction to the above, and the central row bed base A and the right row bed base C are provided.
Is restored to its original state.

Then, at this time, the projection piece (24) moves to the front and rear central positions, and the pushing of the limit switch LS ₃ is stopped.

Next, when you want to turn over to the right, the turnover switching lever
When (36a) or (36b) is tilted to the right, the cam plate (25) is rotated in the direction of arrow (c) this time as shown in FIG. In this state, if pushbutton switch PB ₁ is pressed in the same way as the previous operation, the motor (13) will rotate in reverse, the screw cylinder (23) will move to the tip side, and the operation pin ( 33) is engaged with the recess (b) of the cam hole (25a) formed in the cam plate (25) and is transferred to the tip of the screw shaft as it is. It is rotated in the (h) direction.

Then, the left push-up arms (21a), (21b), (21c), (21d) rotate upwards all at once and the roller (20) attached to the tip thereof,
(20) ... pushes up the back surface of the central row bed base A toward the left side, specifically, the left side of the bed base pieces Aa, Ac, Ad.

Therefore, the lateral shift prevention plate (12) is still engaged with the holding frame (63), and conversely to the above, the entire central bed section A tilts so that the left side is swung up.

Then, in this case as well, the left column bed base B connected to the left side of the central column bed A is lifted by the same operation as described above, and the projection piece (24) pushes the limit switch LS ₁ to drive the motor (13 When the counterclockwise rotation of () is stopped, the left-side row bed base B is held in a substantially horizontal state by the horizontal holding mechanism P. Incidentally, in order to restore the right turn over, it is preferable to push the push button switch PB ₃ as described above.

As described above, when the bed turning push-up device M is operated as described above during nursing such as when changing sheets or diapers, the sleeping sick person can easily turn over the old man to the left or right. You can

Then, in this case, when the bed A of the central row is tilted, the bed B of the left row or the bed C of the right row is held by the horizontal holding mechanism P in a state of being almost horizontal, so that the bed rolls most. Even if a sleeping person who is sleeping to the left or right of the bed is suddenly rolled to the side of the bed to give a big shock, or to the outside of the bed to roll from the bed, It is extremely safe without any unforeseen circumstances such as falling off or getting caught in the safety frame, and has a unique action effect that does not cause discomfort to the sick or the elderly who are sleeping.

Next, a case where it is desired to lift the upper body or the lower body by operating the uplifting device N for ups and downs will be described in detail.

First, if you want to raise the upper body,
Rotate 2a) or (52b) forward (in the direction of arrow). Then, the crank pin (54a) is turned downward and the crank pin (54b) is turned upward via the lever shaft (52), the link with the absorber (80) and the shaft (53), and the crank pin (54b) is turned upward. Pushes up the cam plate (48b), while the crank pin (54a)
Holds (48b) in a non-pushed state. . Therefore,
The pin (51) of the rear drive arm (44), which is directly fixed to the rear rotation pipe (39b), is held in a state where it does not engage with the engagement recess (f) of the cam plate (48b), and vice versa. The cam plate (48a) rotates downward by its own weight and the pin (50) of the front drive arm (45) fixed to the pipe (46) engages with the engaging recess (e) of the cam plate (48a). To be kept

When the push button switch PB ₂ is pushed in in this state, the relay is excited and the relay contact R ₁ is turned on to rotate the motor (13) forward (clockwise). Then, the screw shaft (22) rotates forward, the screw cylinder (23) is transferred to the base side of the screw shaft, and the cam plate (48
Since both a) and (48b) are moved to the base side, the pin (50) is pulled and the pipe is connected via the front drive arm (45).
(46) is rotated in the arrow (N) direction, and the front rotation pipe (39a) is rotated in the arrow (L) direction via the link (47).

Therefore, the bed support is provided by the front push-up arms (40a), (40b) and (40c) provided on the front turning pipe (39a).
Row a located at the front end of (8), specifically A of the bed stand
The a, Ba, and Ca are pushed up from the back side to raise the upper body of the sleeping person.

In this case, in the electric circuit, the limit switch LS ₄ is pushed by the protruding piece (24), the contact of the switch LS _{4 in} the pushbutton switch PB ₁ → relay turns OFF, and instead, the pushbutton switch PB ₃ → The contact of switch LS ₄ in the relay circuit is supposed to be ON.

Then, to return to the original, may press the push button switch PB _3, in this case, the relay is energized relay contacts L ₁ ON
Then, the motor (13) rotates in the reverse direction and the push-up of the bed table pieces Aa, Ba, Ca is released and restored.

In addition, in order to raise the lower body only, that is, only the foot side to the upper position, push the switching levers (52a) (52b)
Rotate in the (i) direction to rotate the pin (54a) upward and conversely the crank pin (54b) downward to push up the cam plate (48a) only. Push in switch PB ₂ . At this time, the motor (13) rotates forward and the screw cylinder (2
3) and the cam plates (48a), (48b) are transferred to the base side of the screw shaft (22), and the rear turning pipe (39b) is moved by the arrow (() through the pin (51) and the rear drive arm (44). E) It is rotated in the direction. Therefore, the rear side of the rear row of the bed base (8) is pushed up by the rear side push-up arms (42a), (42b), (42c).

Specifically, the bed table pieces Ac, Bc, and Cc are the rear push-up arms (42
a), (42b), (42c), and the bed table pieces Ad, Bd, Cd are connected to the rear push-up arms (42a) and (42c).
It is pushed up by d) and (42e). Therefore, the feet of the sleeping person are in a posture of being swung upward. Further, in order to return this state to the original state, it is sufficient to push the push button switch PB ₃ as described above.

Next, in order to raise and lower both the upper body and the lower body, the raising / lowering switching lever (52a) or (52b) is set in the state shown in FIG. 8 in which neither the front nor back is rotated, and the pins (54a) and (54b) are both cam plates. (48
If the pushbutton switch PB ₂ is pushed in while keeping a) and (48b) in the neutral state without pushing them up, the same operation as described above will occur when turning and the head side and the foot side will be lifted up in a dogleg shape. can do.

In the embodiment, the screw shaft (22) is normally or reversely rotated by the motor (13) to operate the push-up device.In this case, the limit switches LS _{1 to} LS ₄ for control are provided with the protruding pieces ( twenty four)
When pressing, if the rotation of the motor (13) does not stop immediately at that point, the screw cylinder (23) will move excessively and push in another limit switch that is not needed, causing a malfunction, This causes inconveniences such as pushing up and making a dangerous steep slope. For this reason, the motor (13) must be equipped with a brake (100), in which case
If the brakes are always applied as described above, not only the brakes are severely worn, but also the motor (13) itself is overloaded and the durability is lowered. Therefore, it is extremely convenient to use the following braking device.

That is, a rubber roll (102) is provided in the blange joint portion between the output shaft (101) of the motor (13) and the screw shaft (22), and an arcuate brake shoe is formed on a part of the periphery of the rubber roll (102). (103) is provided close to the balance (104).
(105) is a fulcrum shaft at the center of the balance (104), (106) is a mounting adjustment screw for the brake shoe (103), and (107) is a balance (104).
The lower limit stopper adjustment body of (107a) is a stopper portion.

Reference numeral (108) is a cam floor for operating the balance (103). (Ten
9) is a cam shaft fixed to the screw cylinder (23) through a bracket (110), and the screw cylinder (23) is an operating side of the bed-turning push-up device M in the front-rear intermediate portion of the screw shaft (22). Immediately before reaching the switching position between the swelling and levitation device N operating side (the screw shaft (22) is about 3 to 5
When the cam shaft (109) pushes down the cam floor (108) and the brake shoe (103) brakes the rotation of the rubber roll (102) at the time of changing to the switching position after rotation, rotation due to inertia of the motor (13). Can be prevented, and the overrunning of the screw cylinder (23) can be eliminated.

Incidentally, (111) indicates a restoring spring for releasing the brake.

Further, the absorber (80) is formed by inserting the connecting pins (83) and (84) into the pipe (81) at both left and right ends thereof.
3), (84) in the pipe to the pipe (81) compression spring (85),
Tension springs (86) are connected to each other so that both push and pull are elastic.

As described above, since the present invention has the above-described configuration, when the bed in the central row is rotated and swung up during the turning operation, the bed in the left row or the right row is held in a substantially horizontal state. Not only the mats, mattresses, sheets, etc. laid on the upper part of the bed stand do not easily slip off, but also when the sleeping sick person or the old person's feet or hands are brought closer to the horizontal side of the bed edge and a little resistance is applied, it suddenly increases. There is no so-called danger of falling down, and there is an effect that it is possible to roll over from this state in an extremely safe state.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a side view, FIG. 2 is a plan view, FIG. 3 is a perspective view showing a working state, and FIG. Front view of the portion, FIG. 5 is a perspective view showing the push-up mechanism portion, FIG. 6 is a perspective view of a main portion, FIG. 7 is a perspective view of the turning operation mechanism portion, and FIG. Figures and 9 are sectional views of the absorber, Figures 10 and 11
Figures 12 and 13 are plan views of the essential parts showing the respective operating states,
Figure is a front sectional view of the main part, Figure 14 is a front sectional view of the main part of another example,
FIG. 15 is a front view of a main part of still another example, FIG. 16 is an electric circuit diagram, FIG. 17 is a side sectional view of a brake mechanism, and FIG. 18 is a front view of the main part. Symbols in the figure A: Central row bed base B: Left row bed base C: Right row bed base M: Push-up device P: Horizontal holding mechanism (8): Bed base

Claims (1)

[Claims] 1. The bed base is divided into three rows in the lateral direction,
Left and right side bed bed sections are provided so as to be able to be bent up and down with respect to the center row bed section, and the left and right center lines of the center row bed section are left by an appropriate operation of a push-up device provided under the bed section. In a bed that can be turned over by tilting the central row bed base by pushing up the side part or the right side part, when the central row bed base is pushed up and tilted, the center is moved in the middle of the tilting operation. At the time when the tilted upper end side of the row bed base and the left row bed base or the right row bed base located on the tilted upper side of the central row bed base come into contact with each other and the tilting operation of the bed base ends. A tilting bed that is provided with a horizontal holding mechanism that holds it in a substantially horizontal state.