JP2008073420A - Chair bed - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a chair bed with a simple structure which can be easily changed from a bed mode to a chair mode. <P>SOLUTION: A floor plate frame 6 is constituted by flexibly connecting a back rest 61, a thigh rest 62, a lower thigh rest 63, and a foot rest 64. The back rest 61 is supported so as to revolve in a vertical direction on a base by rotatably coupling an operation plate 66 fixed to the back face side to the base 1, the foot rest 64 is connected to the base 1 via a hinge member 69. The thigh rest 62 is connected to the base 1 via connecting rod 8, one end side of the thigh rest 62 is raised up by the connecting rod 8 and the joint of the thigh rest 62 and the lower thigh rest 63 is bent upward in a convex shape when the back rest 61 is revolved upward. The thigh rest 62 is horizontally supported by the base 1 and the foot rest 64 folded to the back side of the lower thigh rest 63 at a lower position of the thigh rest 62 in a condition where the back rest 61 is raised to a position. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a bed mainly intended for a care recipient such as a disabled person or a sickly elderly person, and more particularly to a chair combined bed that assists the care recipient to walk independently to restore physical function.

  In general, people with disabilities, sick elderly people, hospitalized patients after surgery, etc. are forced to live on the floor, but as bedridden time increases, physical function declines, so the decline in muscle strength is recovered. Walking training is considered to be extremely effective for stimulating the cerebrum.

  However, a person who has a large functional disorder cannot get up by himself, and needs to be cared for by a relative or a professional caregiver during meals and excretion.

  2. Description of the Related Art Conventionally, various chair-combined beds have been proposed in which a floor frame on which a mattress is placed is changed from a flat state to a chair shape for such care recipients.

  For example, as this type of bed, a carriage that reciprocates along the longitudinal direction is provided between the side frames of the bed, and one of the back floor, the waist floor, and the two-part footbed is flexibly connected to the carriage. And a lifting mechanism for raising and lowering the other side of the footbed is provided on the side frame, and a mechanism for holding the carriage on the waist floor in a fixed position is provided. A device provided with a stop mechanism is known (for example, Patent Document 1).

  In addition, the bed is made up of four flat plates that can be bent and converted into a wheelchair configuration with the two flat plates as a back and a seat, respectively. There has been proposed one in which a pair of arms is attached to the left and right, and a roller is provided at each end thereof (for example, Patent Document 2).

  Furthermore, as a nursing bed that reduces the burden when a care recipient needs to stand up, a bed frame that can be folded including a back frame, a seat frame, and a crus frame is provided, and the floor frame body is in a flat state. It changes into a state bent into a chair shape, and in the state bent into a chair shape, an independent foot frame separated from the lower leg frame is positioned below the seat frame so that the feet of the care recipient need to land (For example, Patent Document 3).

Japanese Utility Model Publication No. 3-63329

Japanese Utility Model Publication No. 61-136720 Japanese Utility Model Publication No. 6-64635

  However, the bed of Patent Document 1 has a lifting mechanism for moving the footrest (the other footbed) up and down in addition to the back raising drive unit that pushes up the backrest (the back floor), and separates them into separate actuators. Therefore, there is an inconvenience that the caregiver has to push the back rest after unlocking the carriage when changing to the chair shape because the operation is cumbersome and expensive.

  Further, according to Patent Document 2, when the wheelchair is in a state where the backrest (flat plate 4) is supported only by the stopper rod (50) fixed to the back surface, the stability of the wheelchair is low. In the form, since the footrest (footrest plate 8) literally protrudes in the horizontal direction, there is a problem that the footrest becomes an obstacle when standing up.

  In this regard, according to Patent Document 3, since the foot rest (foot frame) is located below the thigh rest (seat frame), the foot rest does not become an obstacle when standing up. Since the leg rest is supported by a parallel link, it is difficult to obtain the support strength of the foot rest in the bed shape, and the foot rest is located below the lower leg rest (crus frame) when it is chair-shaped. Therefore, it is necessary to increase the seating height inevitably, and there is a high possibility that the legs will be suspended in the form of a chair.

  Also, in Patent Document 3, since the operations of the foot rest and the back rest are performed separately, it is difficult to switch from the bed shape to the chair shape.

  The present invention has been made in view of the circumstances as described above, and its purpose is to easily convert from a bed shape to a chair shape, and to have a simple structure capable of landing a foot when converted to a chair shape. The purpose is to provide a bed for a chair.

In order to achieve the above object, the present invention
In the chair combined bed provided with a floor board frame that can be bent into a chair shape from a flat state on the gantry,
The floorboard frame is divided into a back rest, a thigh rest, a crus rest, and a foot rest in order from one end in the length direction, and adjacent ones of these rests are connected to each other so as to be bent. When the floorboard frame is deployed in a flat state, at least the thigh rest, the crus rest and the foot rest are supported by the gantry,
The back rest is supported so as to be pivotable in the vertical direction on the gantry by rotatably coupling the part of the working plate fixed to the back side thereof to the gantry part,
The thigh rest is connected to a portion of the gantry through a connecting rod on the side connected to the crus rest,
The foot rest has an end opposite to the crus rest connected to an upper end of the gantry via a hinge member,
When the back rest is swung upward, one end side of the thigh rest is pushed up by the connecting rod interlocking with the swivel movement, and the connecting portion between the thigh rest and the crus rest protrudes upward. Bent into a shape,
When the back rest is raised to a fixed position, the thigh rest is supported horizontally on the gantry, and the foot rest is on the back side of the lower leg rest at a position below the thigh rest. It is folded.

In addition, the gantry includes a movable frame capable of reciprocating in the length direction of the floor frame and a base frame equipped with a drive source for reciprocating the movable frame, and the operation plate is provided on the base frame. Are connected to each other, and the connecting frame and the hinge member are respectively connected to the movable frame.
The actuating plate and the movable frame are connected by a transmission link so that the reciprocating motion of the movable frame and the turning motion of the backrest are interlocked.

The gantry includes a movable frame that can be moved up and down, and a base frame equipped with a drive source for moving the movable frame up and down, and a portion of the operating plate is coupled to the base frame, and the movable frame The connecting rod and the hinge member are coupled to each other,
The movable frame is held by the base frame so as to be movable up and down via a link mechanism including the operation plate so that the up-and-down movement of the movable frame and the turning movement of the backrest are interlocked.

  Further, the thigh rest is formed with an openable / closable opening, and a toilet is provided at a position corresponding to the opening when the floor board frame is bent into a chair shape.

  According to the present invention, the back rest, the thigh rest, the crus rest, and the foot rest constituting the floorboard frame are flexibly connected to the chair shape from the flat state, and the back rest is on the back side. And is connected to the gantry via an operating plate fixed to the gantry and supported on the gantry so as to be pivotable in the vertical direction. Further, the thigh rest is coupled to the gantry via a connecting rod, and the foot rest Is coupled to the upper end of the gantry via the hinge member, and the bending operation of the floor board can be performed synchronously with a single drive source.

  In addition, when the floorboard frame is deployed in a flat state, at least the thigh rest, crus rest and foot rest are supported by the gantry, and in the chair shape where the back rest is raised to a fixed position, the thigh rest is Since it is supported horizontally on the pedestal, it is highly load-bearing and safe, and in the case of a chair type, the foot rest is folded behind the lower leg rest at the lower position of the thigh rest. The footrest does not become an obstacle when standing up.

  In addition, when the thigh rest is connected to the gantry via the connecting rod and the back rest is turned upward, one end side of the thigh rest is pushed up by the connecting rod interlocking with the turning motion, and the thigh The connecting part of the heel rest and the crus rest bends upward in a convex shape, so that the recumbent's buttocks are not pushed out to the foot side during conversion to the chair shape, The person can bend the lower limbs along the thigh rest and the lower leg rest to take a comfortable posture.

  In addition, since the gantry comprises a movable frame that can move in the length direction of the floorboard frame, the entire floorboard frame can be bent into a chair shape while reducing the turning radius of the backrest. By pulling the footrest to the backrest side with the movable frame, it is possible to prevent the leg leg resting and the footrest from being greatly extended in the horizontal direction during the conversion to the chair shape.

  On the other hand, if the gantry has a movable frame that moves up and down in conjunction with the turning motion of the back rest, the height of the floorboard frame deployed in a flat state is set so that the caregiver can care for the lying person without bending the waist. While enlarging, it becomes possible to lower the thigh rest, which becomes a seat portion, at the time of conversion to a chair shape and land the seated person's feet on the floor surface.

  In addition, an opening that can be freely opened and closed is formed in the thigh rest, and a toilet is provided at a position corresponding to the opening when the floor frame is bent into a chair shape on the gantry. You can defecate.

  Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view showing a chair combined bed according to the present invention. In FIG. 1, reference numeral 1 denotes a gantry. The gantry 1 includes a base frame 2 and a movable frame 3.

  The base frame 2 is a rigid body formed by joining a plurality of steel materials, and the support legs 21 are fixed to the front, rear, left and right, and the support columns 23 are fixed to the pair of left and right side beams 22 extending in the front-rear direction. The As is clear from FIGS. 2 and 3, the base frame 2 is provided with a pair of left and right guide rails 24 in parallel inside the side beam 22, and a pair of left and right brackets on both guide rails 24. 25, and one end of a swing arm 4 described later is rotatably supported by the bracket 25. Further, as shown in FIG. 1, a motor-driven cylinder device 5 is installed at one end in the length direction of the base frame 2 as a drive source for reciprocating the movable frame 3 along a predetermined one axial direction. Is done. The cylinder device 5 may be a hydraulic cylinder or a pneumatic cylinder.

  On the other hand, as shown in FIGS. 1 and 4 to 5, the movable frame 3 is also a rigid body configured by joining a plurality of steel materials, and the lower portion thereof engages with the guide rail 24 of the base frame 2. A moving roller 31 is mounted. The movable frame 3 is connected to the telescopic rod portion 51 of the cylinder device 5 as shown in FIG. 1, and the movable frame 3 extends along the length direction (guide rail 24) in the base frame 2 by the expansion and contraction operation. It is designed to reciprocate. 4 and 5, reference numeral 32 denotes a coupling pin fixed to the movable frame 3.

  In FIG. 1, reference numeral 6 denotes a flat floor board frame arranged on the gantry 1. The floorboard frame 6 includes a back rest 61 for supporting the upper body of the lying person, a thigh rest 62 for supporting the buttocks or thigh of the lying person, and a lower leg part of the lying person. The leg rest 63 is divided into a leg rest 64 for supporting the foot of the lying person, and adjacent ones of the rests 61 to 64 are connected to each other so as to be freely bent. The back rest 61 and the thigh rest 62 are connected to each other by a hinge 65A that rises from the side edges of both 61 and 62, and can be bent into a downwardly convex valley folded state. 62 and the crus rest 63, and the crus rest 63 and the foot rest 64 are connected by hinges 65B and 65C, respectively, so that they can be bent into a mountain-folded state that is convex upward.

  Then, the mattresses M1 to M4 divided into four are individually attached on the surfaces of the respective rests 61 to 64, and a lying person can lie down on the mattresses M1 to M4.

  Here, a pair of left and right operation plates 66 extending to the lower position of the thigh rest 62 are fixed to the back surface of the back rest 61, and the space between the operation plates 66 and 66 is apparent in FIGS. Thus, a groove-shaped guide rail 67 is fixed.

  As shown in FIG. 1, a roller 41 is rotatably fitted in the guide rail 67, and the roller 41 is rotatably supported at the tip of the swivel arm 4. Further, an intermediate portion of the operation plate 66 is rotatably coupled to the upper end portion of the column 23 constituting the base frame 2. As a result, the back rest 61 is supported by being able to turn (raise and lower) in the vertical direction around the coupling portion P1 between the operating plate 66 and the base frame 2. Further, the distal end portion 66A of the operating plate 66 is below the connecting portion P1 between the operating plate 66 and the base frame 2, and the front portion of the movable frame 3 (the connecting pin 32 on the head side of the lying person). They are connected by a transmission link 7.

  The transmission link 7 is slightly inclined with respect to the moving direction of the movable frame 3 and is set so that one end side coupled to the operation plate 66 is lower than the other end side, thereby driving the cylinder device 5 to be movable. When the frame 3 is moved to the right in FIG. 1, a tensile force by the transmission link 7 acts on the tip portion 66A of the operating plate, so that the operating plate 66 swings about the coupling portion P1, so that the back rest When the movable frame 3 is moved to the left in FIG. 1, the backrest 61 is turned downward by the pressing of the distal end portion 66 </ b> A of the operating plate by the transmission link 7.

  When the back rest 61 turns downward and falls down in a horizontal state as shown in FIG. 1, the back surface of the back rest 61 comes into contact with the back receiving portion 26 arranged on one end of the base frame 2 so that the back rest 61 is in the horizontal state. A leg (not shown) is fixed to the back surface of the back rest 61 at a right angle instead of the back support portion 26, and the leg rests on the upper surface of the base frame 2 when the back rest 61 falls down. Alternatively, the backrest 61 may be supported upright on the floor surface.

  The cylinder device 5 is not limited to connecting the telescopic rod portion 51 to the movable frame 3, but is a clevis-type cylinder device 5 at both ends, and this is used as the base frame 2 and the revolving arm 4 or the back of the back rest 61. In this case, the movable frame 3 can be moved while the backrest 61 is turned.

  On the other hand, when the floor board frame 6 is unfolded in a flat state as shown in FIG. 1 to form a bed shape, the thigh rest 62, the crus rest 63, and the foot rest 64 are the movable frame 3 constituting the gantry 1. Is supported by

  Among these, the thigh rest 62 is connected to the rear portion (the foot side of the lying person) of the movable frame 3 through the connecting rod 8 on the connecting side (hinge 65B side) with the crus rest 63. In FIG. 1, reference numeral 68 denotes a bracket fixed to the back surface of the thigh rest 62, and one end of the connecting rod 8 is rotatably coupled to the bracket 68. Further, the crus rest 63 is connected only between the thigh rest 62 and the foot rest 64, but not to the gantry 1, and the foot rest 64 is connected to the crus. The end opposite to the part rest 63 is connected to the upper end of the movable frame 3 via a hinge member 69.

  Thus, in the chair / bed configured as described above, the floor frame 6 is expanded in a flat shape as shown in FIG. 1 by driving the cylinder device 5 and moving the movable frame 3 to the right in FIG. The bed shape is changed to the chair shape, and the operation will be described later.

  Next, FIG. 8 shows the movable frame partially enlarged. As is apparent from this figure, a trigger lever 33 is attached to the movable frame 3. The trigger lever 33 is for causing the connecting rod 8 to perform a definite movement. One end of the trigger lever 33 is rotatably coupled to the movable frame 3, and the other end is formed with a recess 33A cut out at a right angle. The trigger lever 33 can swing up and down around the coupling portion P2 with the movable frame 3, and the pin P3 concentric with the coupling portion between the connecting rod 8 and the thigh rest 62 in the recess 33A. Is supported. A roller 9 is attached to the pin P3, and the roller 9 is supported by a receiving seat 34 formed on the inner surface of the movable frame 3. Further, a protrusion 33B is formed at one end on the fulcrum side of the trigger lever 33, and a spring for applying a counterclockwise urging force to the trigger lever 33 in FIG. 8 between the protrusion 33B and the movable frame 3. 35 is multiplied. Further, as is apparent from FIG. 8, the connecting rod 8 has a long hole 8A at one end on the coupling side with the movable frame 3, and is allowed to move in the length direction by the long hole 8A.

  Then, according to the trigger lever 33 as described above, when the upward turning of the back rest 61 shown in FIG. 1 is started, the thigh rest 62 is pushed up by resisting the load from above by the lying person. The hook 8 can be given a notch that turns upward.

  Next, FIG. 9 shows an enlarged connection portion between the foot rest and the movable frame. As is apparent from this figure, a bracket 36 is attached to the upper end of the movable frame 3, and one end of the hinge member 69 is rotatably supported by the bracket 36. The hinge member 69 is made of a metal plate whose front end is bent, and its front end is rotatably coupled to a bracket 64A fixed to the back surface of the foot rest 64. As a result, the foot rest 64 can swing up and down around the joint P4 with the hinge member 69, and can swing up and down around the joint P5 between the hinge member 69 and the movable frame 3. However, instead of the hinge member 69 as shown in FIG. 9, a shaft may be attached to the bracket 64 </ b> A, while a long hole for guiding the movement of the shaft may be formed in the movable frame 3.

  Here, the operation of the bed of the present application configured as described above will be described. FIG. 10 is an operation diagram of the link system showing the state in which the floorboard frame is converted into a chair shape in order. The black circle represents a rotation fulcrum with a fixed position, and the white circle represents a movement fulcrum.

  As is clear from FIG. 10, when the floorboard frame 6 is converted into a chair shape, the backrest 61 swings upward about the joint P1 (rotation fulcrum) between the base frame 2 and the operation plate 66 shown in FIG. Finally, get up to an upright position. In the state in which the back rest 61 is in a lying state, the joint P1 (the rotation fulcrum represented by a black circle in FIG. 10) between the operating plate 66 and the base frame 2 is located at the thigh rest rather than the position of the hinge 65A as shown in FIG. When the backrest 61 starts to turn upward, the thigh rest 62 connected to the backrest 61 by the hinge 65A is pulled up by the backrest 61 on the side of the hinge 65A. The hinge 65B side of the part rest 62 is also pushed up by the action of the trigger lever 33 shown in FIG. For this reason, the articulating rod 8 obtains an upward turning stagnation centering on the connecting portion with the movable frame 3 (that is, removes the thought point), and the upward turning force from the back rest 61 through the thigh rest 62. Is given. Thus, since the hinge 65B side of the thigh rest 62 is largely pushed upward from the hinge 65A side by the upward turning of the connecting rod 8, the thigh rest 62 and the crus rest during the upward turning of the back rest 61 The connection part (hinge 65B) with 63 bends upward convexly as shown in FIGS. 10 (a) to 10 (b). For this reason, the lying person on the floor board frame 6 is not allowed because the thigh is not shifted to the foot side, and the thigh and the lower leg are bent while being supported by the thigh rest 62 and the lower leg rest 63. Can not be forced to take a good posture.

  Further, when the connecting rod 8 shifts from the upright state to the lying down state by continuing the upward turning of the back rest 61, the thigh rest 62 is gradually lowered while being pushed out toward the crus rest 63 side.

  On the other hand, when the movable frame 3 moves rightward in FIG. 10, the leg rest 64 is pulled in the same direction, and the crus rest 63 connected thereto is turned counterclockwise in FIG. Therefore, the crus rest 63 and the foot rest 64 are gradually folded in half, and in a state where the back rest 61 is raised to a fixed position (a state of standing substantially upright), as shown in FIG. The thigh rest 62 is supported horizontally on the gantry, and the foot rest 64 is folded to the back side of the crus rest 63 at a position below the thigh rest 62. In the state where the floor board frame 6 is bent into a chair shape, the crus rest 63 may be perpendicular to the thigh rest 62. According to this example, as shown in FIG. The thigh rest 62 is bent at an acute angle with respect to the thigh rest 62 that is horizontally level, and a seated person on the thigh rest 62 bends the lower limb (leg) into an acute angle to Therefore, the seated person can move up the center of gravity of the body forward and can stand up without assistance from a caregiver.

  In particular, the thigh rest 62 is formed with an opening that can be opened and closed by a lid (not shown), and the base frame 2 constituting the gantry has the opening when the floor board frame 6 is bent into a chair shape. A toilet (not shown) is provided at a position corresponding to. For this reason, when it changes to a chair shape, the mattress M2 arrange | positioned on the thigh rest 62 can be excluded together with the said lid | cover, and defecation can be performed.

  As mentioned above, although an example of the chair combined bed which concerns on this invention was demonstrated, the mount frame 1 may be the structure to which the base frame 2 and the movable frame 3 were integrally fixed, and does not have such a movable part. Even in the gantry, the floor board frame 6 can be bent from a flat state into a chair shape so as to be bent.

  Next, a modified example of the chair combined bed according to the present invention will be described. FIG. 11 shows a bed shape in which the floor board frame is developed in a flat state, and FIG. 12 shows a state in which the floor board frame is converted into a chair shape. In FIGS. 11 and 12, parts that are the same as those in the above example are assigned the same reference numerals, and detailed descriptions thereof are omitted.

  Here, 10 is a mount. The gantry 10 includes a base frame 20 having a concave cross section and a movable frame 30 disposed inside the base frame 20, and the movable frame 30 is disposed and fixed at a desired position via a link mechanism 40. It can be moved up and down. The link mechanism 40 has a pair of left and right operation plates 42 fixed to the back surface of the back rest 61 and a pair of left and right swing links 43 that are V-shaped, both of which are connected by an interlocking link 44. It is the composition which becomes. In this example, the distal end portion of the operating plate 42 is bent in a V shape and extends to a position below the thigh rest 62, and the bent portions 42A and 43A of the operating plate 42 and the swing link 43 are base frame. 20, and one end portions 42 </ b> B and 43 </ b> B thereof are rotatably coupled to the lower side of the movable frame 30.

  On the other hand, the movable frame 30 and the thigh rest 62 are connected via a pair of left and right connecting rods 8 as in the above example, and one end of the foot rest 64 is connected to the upper left and right ends of the movable frame 30 via a hinge member H. It is connected to.

  In this example, the hinge member H includes a horizontal shaft 64B attached to the back surface side of the foot rest 64 along the width direction of the foot rest 64, and the horizontal shaft 64B is one end of the movable frame 30. It is configured to be supported by the elongated hole 30A formed above.

  A leg 61A is fixed to the back rest 61 at right angles to the back surface of the back rest 61. When the back rest 61 is lying down, the leg 61A stands upright on the floor surface at a position where the leg rest is removed from the base frame 20. It is set as the structure supported horizontally.

  Further, a cylinder device 5 having a clevis shape at both ends is swingably attached to the base frame 20, and its telescopic rod portion 51 is connected to a central portion of a shaft installed on a pair of left and right operation plates 42. .

  And according to the chair combined bed which concerns, the backrest 61 turns up and down by the expansion-contraction operation | movement of the cylinder apparatus 5, the raising / lowering operation | movement of the movable frame 30 is performed in conjunction with the turning operation | movement, and the backrest 61 turns upwards. When this is done, the floor frame 6 is bent while the movable frame 30 is lowered to form a chair as shown in FIG. In this example as well, when the back rest 61 is raised to a fixed position and has a chair shape, the thigh rest 62 is supported horizontally on the gantry 10 and at a position below the thigh rest 62. The crus rest 63 is bent at an acute angle, and the foot rest 64 is folded on the back side of the crus rest 63. When the foot rest 64 is folded as shown in FIG. The leg rest 64 is formed with a slit (not shown) that receives the portion of the movable frame 30 so as not to interfere with the footrest 64. Also in this example, an opening (not shown) that can be freely opened and closed is formed in the thigh rest 62, and the base frame 20 constituting the gantry 10 has the opening when the floor board frame 6 is bent into a chair shape. A toilet bowl S is provided at a corresponding position.

  Here, in this example, the movable frame 30 is moved up and down in conjunction with the turning motion of the back rest 61. Therefore, when the floor board frame 6 is flattened and formed into a bed shape as shown in FIG. Since the position of the floorboard frame 6 is increased, it becomes possible for the caregiver to care for the lying person without bending the waist, and the thigh rest 62 is lowered in the chair shape, so that the caregiver in a sitting position (sitting person) Can land the foot.

  Although the present invention has been described above, the bed is not limited to the above configuration. For example, a motor may be used in place of the cylinder device 5 and the operation plates 42 and 66 may be turned by the motor. Good.

Side view (bed-shaped state) showing a chair combined bed according to the present invention Side view of the base frame that constitutes the mount AA enlarged sectional view of FIG. Side view of the movable frame that constitutes the mount BB expanded sectional view of FIG. Front view of backrest Side view of backrest Partial enlarged view of movable frame Enlarged view showing the connection between the foot rest and the movable frame Operation explanatory diagram of the chair combined bed according to the present invention The side view which shows the example of a change of the chair combined bed which concerns on this invention (state of a bed shape) The side view which shows the example of a change of the chair combined bed which concerns on this invention (state of a chair shape)

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,10 Base 2,20 Base frame 3,30 Movable frame 40 Link mechanism 42 Actuation plate 43 Swing link 5 Cylinder device (drive source)
51 telescopic rod part 6 floor board frame 61 back rest 62 thigh rest 63 lower leg rest 64 foot rest 66 actuating plate 69, H hinge member 7 transmission link 8 connecting rod S toilet

Claims (4)

In the chair combined bed provided with a floor board frame that can be bent into a chair shape from a flat state on the gantry,
The floorboard frame is divided into a back rest, a thigh rest, a crus rest, and a foot rest in order from one end in the length direction, and adjacent ones of these rests are connected to each other so as to be bent. When the floorboard frame is deployed in a flat state, at least the thigh rest, the crus rest and the foot rest are supported by the gantry,
The back rest is supported so as to be pivotable in the vertical direction on the gantry by rotatably coupling the part of the working plate fixed to the back side thereof to the gantry part,
The thigh rest is connected to a portion of the gantry through a connecting rod on the side connected to the crus rest,
The foot rest has an end opposite to the crus rest connected to the upper end of the gantry via a hinge member,
When the back rest is swung upward, one end side of the thigh rest is pushed up by the connecting rod interlocking with the swivel movement, and the connecting portion between the thigh rest and the crus rest protrudes upward. Bent into a shape,
When the back rest is raised to a fixed position, the thigh rest is supported horizontally on a gantry, and the foot rest is located behind the lower leg rest at a position below the thigh rest. A bed that can be folded and used as a chair. The gantry includes a movable frame capable of reciprocating in the length direction of the floor frame and a base frame equipped with a drive source for reciprocating the movable frame, and the portion of the operation plate is disposed on the base frame. And the connecting rod and the hinge member are respectively coupled to the movable frame.
The chair-combined bed according to claim 1, wherein the actuating plate and the movable frame are connected by a transmission link so that a reciprocating motion of the movable frame and a turning motion of the backrest are interlocked. The mount has a movable frame that can be raised and lowered, and a base frame equipped with a drive source for raising and lowering the movable frame, and a portion of the operating plate is coupled to the base frame, and The articulated rod and the hinge member are joined together,
2. The chair as claimed in claim 1, wherein the movable frame is held by the base frame so as to be movable up and down through a link mechanism including the operation plate so that the up-and-down motion of the movable frame and the turning motion of the backrest are interlocked. bed.   An opening that can be freely opened and closed is formed in the thigh rest, and a toilet is provided at a position corresponding to the opening when the floor board frame is bent into a chair shape. A chair combined bed according to any one of the above.

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