JPS6358566B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sheet that can be used as a bed, and more particularly to a sheet that can be used as a bed and is suitable for resting or taking a nap for an attendant in a hospital.

Two seats are placed facing each other with a gap between them, the seat cushions of both seats are tilted and the seat cushions are moved forward, and the seat cushions and seat backs of both seats are set in a horizontal position for resting or taking a nap. Conventional seats of the type that can be used have the drawback that the seat cushion and the seat back are linked through long holes and pins, resulting in large frictional resistance during operation and poor operability.

It is an object of the present invention to eliminate the drawbacks of the conventional seats and to provide a seat that can be used as a bed and has excellent operability.Another object of the present invention is to eliminate the drawbacks of the conventional seats and to provide a seat that can be used as a bed and has excellent operability. This invention provides a bed-cum-bed sheet that can automatically connect both sheets, which will become clear from the following description with reference to the drawings.

1 to 7 show an embodiment of the present invention, and as shown in FIG.
The second sheets 1 and 2 are placed facing each other with a distance 1 between them.

As shown in FIGS. 1 and 2, the first and second seats 1 and 2 include leg portions 3 and 3', a seat cushion 4, a seat back 5, and a guard member 6. It is configured.

The legs 3, 3' are located on both sides of the seat cushion 4. In addition, both the legs 3 and 3' have a third
As shown in the figure, it is formed into a mold when viewed from the side, and a bar 7 is installed approximately in the middle of the height direction, and a plurality of guide rollers 8 are mounted on the bar 7.
is attached with its upper half protruding from the upper surface of the bar 7. Furthermore, on both legs 3, 3',
Links 9, 9' are attached.

One end of the links 9, 9' is connected to a pin 10.
The links 9, 9' are attached to the rear ends of the bars 7 of the legs 3, 3', and a pin 11 is protruded from the other end. It is designed to be able to rotate around a pin 10 at the rear end.

The seat cushion 4 is mounted on slide rails 12, 12' arranged on both sides in the width direction. Both slide rails 12, 12' are formed in a channel shape as shown in FIG. 3, and as shown in FIG.
The upper inner surface is brought into contact with a guide roller 8 provided on a bar 7 of 3', and is fitted onto the bar 7.
As a result, the seat cushions 4 of the first and second seats 1 and 2 are connected to the guide roller 8 and the slide rail 1.
2 and 12', it can be slid forward when switching from the state of use as a seat to the state of use as a bed.

The seat cushion 4 is provided with a joint member 13. This joint member 13
As shown in FIG. 3, side members 14, 14' are installed inside the slide rails 12, 12'.
and a rear member 15 connecting these rear end portions. A shape retaining member 1 of the seat cushion 4 is disposed between the side members of the joint member 13 at its front and rear ends.
6 and 16' are provided. Further, second brackets 17 and 17' for connecting the seat back frame are vertically attached to both outer sides of the shape retaining member 16 on the rear end side, and the rear member 15 of the joint member 13 , a third frame having a fitting groove 19 for fitting an extrusion frame 30, which will be described later.
Brackets 18, 18' are provided vertically. The joint member 13 is attached by inserting the side members 14, 14' into a plurality of guide members 20 provided inside the slide rails 12, 12', and is attached separately from the slide rails 12, 12'. It is attached so that it can slide in the front and rear directions of the seat.

The end portion 13a of the joint member 13 of the first sheet 1 and the joint member 13 of the second sheet 2
The end portions 13b of the seat cushions 4, 4 of the first and second seats 1, 2 are formed in a male-female relationship.
4 is advanced to the most advanced position, the ends 13a, 13b of the joint members 13, 13 can fit into each other.

Between the ends 13a and 13b of the joint members 13 and 13 of the first and second sheets 1 and 2, a first
A locking mechanism 21 is attached. As shown in FIG. 4, the first locking mechanism 21 includes a locking pawl 22 attached to the end 13b of one joint member 13 and biased in the locking direction by a spring 23, and a locking pawl 22 attached to the end 13b of one joint member 13 and urged in the locking direction by a spring 23. A locking pawl is formed in the notch 24 when the joint members 13, 13 of the first and second sheets 1, 2 are moved forward. 22 are automatically engaged, locking both joint members 13, 13, and connecting the seat cushions 4, 4 of the first and second seats 1, 2. In other words, the first and second
The structure in which the ends 13a, 13b of the joint members 13, 13 of the seats 1, 2 can be fitted together and the first locking mechanism 21 are the seat shoes of the first and second seats 1, 2. When used as a bed with the cushions 4, 4 advanced to the most advanced position, a connecting mechanism is configured to connect the seat cushions 4, 4 so that they do not separate.

The seat bag frame 25 that forms the seat bag 5 is, as shown in FIG. and a horizontal member 28 attached between the lower ends of both frame assemblies, and at least both ends of the horizontal member 28 are formed hollow. Brackets 29, 29' extend from the straight members 26, 26 of both frame assemblies of the seat back frame 25, and a joint is provided at the lower part between the J-shaped members 27, 27 of both frame assemblies. Part 1
An extrusion frame 30 for operating 3 is attached. And seat back frame 25
At both ends of the horizontal member 28, both legs 3,
said link 9 attached to bar 7 of 3';
The pin 11 provided at the other end of 9' is inserted,
Further, the first brackets 29, 29' extending from the straight member 26 of both frame assemblies are rotatably attached to the second brackets 17, 17' attached to the shape retaining member 16 by a pin 31. connected, the J-shaped member 27 of both frame assemblies;
Extrusion frame 30 attached between 27
are fitted into fitting grooves 19 formed in brackets 18, 18' provided on the rear member 15 of the joint member 13. As a result, when the seat back 5 is tilted rearward, the seat cushion 4 engages the bars 7 of both leg portions 3, 3' with the slide rails 12, 12', and the links 9, 9' in FIG. The seatback frame 25 moves parallel forward together with the slide rails 12, 12' through the counterclockwise rotation of the brackets 17, 17'; 29, 29'. While rotating about the rotation center, the brackets 18 and 18' are pushed forward by the push-out frame 30 during this rotation, and the joint member 1
3 is configured to be able to move forward in parallel.

One leg 3 is provided with a second locking mechanism 32 for holding the seat cushion 4 and seat back 5 in a state of use as a seat. This second locking mechanism 32 is mounted on a knob 33 and pivoted on a pin 35 on the outside of the bar 7 of one leg 3, as shown in FIGS. 5 and 6. In addition, the lever 34 is biased in the locking direction by a spring 36, a locking pin 37 attached to the lever 34, and a locking hole 38 formed in the slide rail 12. Lock pin 37 in hole 38
By fitting the seat cushion 4 into position, the seat cushion 4 can be fixed in position, and the seat bag 5 can be held at a set angle for use as a seat. Further, a plurality of the locking holes 38 are formed, and the locking pins 3 are inserted into the plurality of locking holes 38.
7 may be selectively inserted so that the seat back 5 can be adjusted to any angle.

As shown in FIGS. 1 and 2, the guard member 6 is provided only on the seat back 5 side of the seat cushion 4, and is designed to protect a person lying down when the bed is used as a bed. There is.

The bed sheet of the above embodiment functions as follows.

That is, the first and second sheets 1 and 2 are
From the usage form as a seat shown in FIG. 2, operate the knob 33 of the second lock mechanism 32,
When the locking pin 37 is removed from the locking hole 38 and the seat backs 5 of the first and second seats 1, 2 are tilted backward, the links 9, which are pivotally connected to the bars 7 of both legs 3, 3', 9' rotate about the pin 10 at one end in the direction shown by arrow a in FIG. 2, respectively.

As the links 9, 9' are rotated, the pin 1 provided at the other end of each link 9, 9'
1, the seat back frame 25 is pulled forward, and the seat back 5 is moved forward while tilting rearward about the pin 31,
The seat cushion 4 is pushed forward, and the seat cushion 4 is moved by the guide rollers 8 and slide rails 12, 12' provided on the bars 7 of both legs 3, 3'.
It moves forward in parallel due to the action of

Additionally, as the seat back 5 is tilted around the pin 31, the seat back frame 2
The push-out frame 30 attached to the bracket 5 is pushed forward, and the brackets 18 and
8', the joint member 13 is pushed forward and moved.

When the seat backs 5 of the first and second seats 1 and 2 are tilted horizontally, the seat cushions 4 of the first and second seats 1 and 2 are tilted horizontally, as shown in FIG. The front end surfaces of the seat cushions 4 of the first and second seats 1 and 2 come into contact with each other, and at the same time, the first and second seats move forward by a distance m=1/2l.
The joint members 13 of the second seats 1 and 2 advance a distance n longer than the advance distance m of the seat cushion 4, and end portions 13a and 13b of both joint members 13 and 13 are formed in a male and female relationship. At the same time, the locking pawl 22 engages with the notch 24 of the first locking mechanism 21, and the first and second sheets 1 and 2 are set to be used as a bed.

As mentioned above, when the first and second sheets 1 and 2 are set to be used as a bed, the ends 13a and 13b of the joint member 13 of the first and second sheets 1 and 2 are fitted together. First lock mechanism 2
1, the first and second sheets 1,
The two seat cushions 4 are connected so as not to separate from each other.

When returning the first and second sheets 1 and 2 from their use as beds to their use as sheets, remove the locking pawl 22 of the first locking mechanism 21 from the state shown in FIG. , then the first one,
When the seat backs 5 of the second seats 1 and 2 are rotated in the upright direction, the links 9 and 9' rotate in the direction opposite to the arrow a in FIG. The frame 25 is pulled rearward, the seat bag 5 rotates in the upright direction about the pin 31 and moves rearward, and the seat cushion 4 moves rearward in parallel.
The joint member 13 is attached to the seat back frame 25
The movable members are pulled in the backward direction by the rearward traction action of the push-out frame 30 attached to the push-out frame 30, and each movable member is returned to the original position shown in FIG. The locking pin 37 is automatically inserted into the seat 38, and as a result, the seat cushion 4 is fixed in position, the seat back 5 is held at the set angle, and the first and second seats 1 and 2 are moved as shown in FIG. It is set in the usage format as a sheet as shown.

Note that the joint member 1 constituting the connection mechanism of the seat cushions 4 of the first and second seats 1 and 2
3 and the first locking mechanism 21 are not limited to the embodiment shown in the drawings, but can be used in the form of use as a bed in which the seat cushions 4 of the first and second seats 1 and 2 are moved to the most advanced position. Any structure may be used as long as the two seat cushions can be connected so that they do not separate.

The above is the configuration of an embodiment of the bed-cum-seat according to the present invention. According to this configuration, as the seat bag is rotated in the horizontal direction or the upright direction, the seat cushion can be moved in the front-rear direction via the link mechanism. Since it can be towed and moved, it has the effect of allowing an extremely smooth transition from usage as a seat to usage as a bed, and vice versa, and the position of the seat back is above the legs. The seat bag can be held stably as it moves to the desired position.

Furthermore, the present invention connects the seat cushions of the first and second seats to each other through a connecting mechanism when they are advanced to the most advanced position, and when the seat cushions are used as a bed, the seat cushions are connected to each other through a connecting mechanism. Since the bed is prevented from separating, it has the effect of significantly improving the usability of the bed.

It should be noted that the above description merely shows one embodiment of the present invention, and it will be obvious that various modifications and changes can be made without departing from the spirit of the present invention.

[Brief explanation of the drawing]

Figures 1 to 7 show an embodiment of the present invention, in which Figure 1 is a side view of the usage form as a sheet, Figure 2 is an enlarged side view of the first sheet, and Figure 3 is a side view of the first sheet. FIG. 4 is an exploded perspective view of the main parts; FIG. 4 is an enlarged longitudinal sectional side view of the coupling mechanism including the first lock mechanism;
The figure is a longitudinal sectional plan view of the second lock mechanism, FIG. 6 is a front view of the second lock mechanism, and FIG. 7 is an explanatory view of the operation corresponding to FIG. In the figure, 1, 2...first and second sheets, 3,
3'... Leg, 4... Seat cushion, 5...
Seat back, 7... Bar, 8... Guide roller, 9, 9'... Link, 10, 11... Pin,
12, 12'...Slide rail, 13...Joint member, 17, 17'...Second bracket,
18, 18'... Third bracket, 19... Fitting groove of extrusion frame, 21... First, second
a first locking mechanism for holding the ends of the joint members of the seats in a connected state, 25... Seat back frame, 28... Horizontal member for connecting the pin of the link and the seat back frame, 29, 2;
9'... First bracket, 30... Frame for extrusion, 31... Pin for connecting the joint member and seat back frame, 32... First and second sheets used as sheets. A second locking mechanism holds the lock.

Claims (1)

[Claims] 1 Legs placed on both sides of the seat cushion with a bar horizontally suspended in the middle, a slide rail that can move back and forth with respect to the bar, and a joint member that can move back and forth with respect to the slide rail. A sliding seat cushion in the front and back direction,
First and second seats each having a push-out frame and a reclining seat bag having a first bracket at its lower end are installed facing each other at a distance, and leg portions of the first and second seats are installed. and a seat bag are connected via a link that rotates around the leg side, and a second bracket that pivotally supports the first bracket of the seat bag is fixed to the rear end of the slide rail,
A third bracket having a fitting groove that fits into the extruded frame is fixed to the rear member of the joint member, and when the seat bag is tilted backward, the seat bag moves forward by rotation of the link. At the same time, the slide rail of the seat cushion moves forward parallel to the bar, and the pushing frame pushes the joint member forward through the third bracket, and the first and second A seat that can be used as a bed, characterized in that the joint member is locked by a locking mechanism at the most advanced position of the seat cushion of the seat.