JP2007202669A - Attitude change switching means in attitude changeable bed - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an attitude change switching means housing a leg receiving bottom below a lower back receiving bottom and lifting the back holding the leg receiving bottom in a fixed state by simple constitution in a bed whose attitude can be changed to a chair shape. <P>SOLUTION: For the bed, a sliding frame is provided via a driving means so as to be freely movable to the front and back along a base frame, the base frame and the sliding frame are provided with a back receiving bottom through an elevating and lowering mechanism, the lower back receiving bottom is attached to the base frame, and the leg receiving bottom is provided on a slide frame to be moved to the front and back along the base frame linked with the front and back movements of the sliding frame. The bed is provided with the attitude change switching means so as to be set to the state of linking the slide frame by the front and back movements of the sliding frame and the state of holding the leg receiving bottom without linkage. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a posture change switching means in a bed whose posture can be changed.

2. Description of the Related Art Conventionally, there is a nursing bed in which a floor portion is divided into a plurality of portions and each floor portion is configured to be able to move up and down. However, this type of bed, which is generally popular, performs an operation that combines a back-up operation and a knee-up operation. Therefore, it is suitable for medical treatment on the bed, but it is often difficult to get on and off the bed.
Therefore, there is a bed in which the floor portion of the bed is divided into a plurality of portions so that the floor portion can be raised and lowered, and the posture can be changed even in a chair-like state. In this bed, the leg receiving bottom is housed under the waist receiving bottom so as to be interlocked with the back raising operation, so that it is transformed into a chair-like state. And it is comprised so that a flame | frame etc. may not protrude in both right-and-left both sides so that a chair-like state can stand up and sit down easily. Therefore, there is an effect that not only the rising to the front but also the movement to the side of the bed can be easily performed.

  The bed is also constructed so that it can be raised with its legs extended. Therefore, it can be used according to the usage situation of the user and is very suitable.

  However, in this bed, since the storage mechanism of the leg support bottom is performed by a parallel link provided in the sliding frame, in order to store the foot support bottom below the waist support bottom, a length longer than a certain length is required. Is needed. Therefore, there is a limit to lowering the height of the bed, and when the shorter one is used, the leg may not firmly touch the floor. (See Patent Document 1)

In order to improve this, there is one configured to slide the storage mechanism. However, this bed cannot be raised with its legs extended. (See Patent Document 2)
JP 2004-298372 A JP 2005-118189 A

  The problem to be solved is a bed whose posture can be changed like a chair so that it can stand up easily. It is an object to provide means with a simple configuration.

According to the first aspect of the present invention, the slide frame is provided via the driving means so as to be movable back and forth along the base frame, and the base frame and the slide frame are provided with the back support bottom via the undulation mechanism. The base frame is provided with a waist support bottom, and in a bed having a leg support bottom on a slide frame that moves back and forth along the base frame in conjunction with the back and forth movement of the slide frame, It is characterized in that it includes posture change switching means that can be set to a state in which the slide frame is interlocked by a back-and-forth movement and a state in which the footrest bottom is held without being interlocked.
In the invention of claim 2, as a state in which a pin is inserted into a telescopic interlocking rod that is nested and held at a fixed length, the slide frame can be moved back and forth in conjunction with the back and forth movement of the slide frame, It is characterized by comprising posture change switching means configured such that the pin is inserted into the slide frame and the back and forth movement of the slide frame is constrained, and the interlocking rod is in a state of being telescopic.

According to the first aspect of the present invention, the base frame is provided with a sliding frame that can be moved back and forth. This sliding frame is moved back and forth by the driving means. A back support bottom is attached between the sliding frame and the base frame via a hoisting mechanism. Therefore, the raising / lowering operation of the back support bottom is performed by the back and forth movement of the sliding frame. Further, a waist support bottom is attached to the base frame. Further, a slide frame that can move below the waist support bottom in conjunction with the back and forth movement of the slide frame is provided, and the leg support bottom is disposed on the slide frame. Therefore, when the normal operation is performed, from the smooth state where the back support bottom, the waist support bottom and the leg support bottom are substantially in the same plane, the back support bottom stands up and the leg support bottom is below the waist support bottom. The posture can be changed to the stored chair state. Further, when the interlocking movement of the slide frame by the forward / backward movement of the sliding frame is released by the posture change switching means, the backrest bottom is raised and the sitting posture with the legs extended is taken. Therefore, the treatment on the bed is performed comfortably, and it is easy to stand up in the chair state, so that the use environment is further expanded.
In the second aspect of the invention, the posture change switching means is configured as a telescopic interlocking rod that is telescopic and can be switched between a state in which it is held at a fixed length by inserting / removing a pin and a state in which it can expand / contract. Therefore, the configuration of the posture change switching means is very simple and the configuration is simple, so that it is difficult to cause a failure.

  A sliding frame is provided through a driving means so as to be movable back and forth along the base frame, and the base frame and the sliding frame are provided with a back support bottom through a hoisting mechanism, and the base frame has a waist. Attach the receiving bottom and move the slide frame by moving the slide frame back and forth in a bed that has a leg support bottom on the slide frame that moves back and forth along the base frame in conjunction with the back and forth movement of the slide frame. The bed is provided with posture change switching means configured to be able to be set to a state in which the footrest bottom is held without being interlocked with the state to be moved.

An embodiment of a bed B provided with the posture change switching means 1 according to the present invention will be described with reference to the drawings. The bed B has a base frame 2 installed on the floor, a sliding frame 3 that moves back and forth with respect to the base frame 2, and a sliding frame 3 that moves back and forth with respect to the base frame 2. The waist is provided via a drive means 4, a waist receiving bottom 5 assembled to the base frame 2, and a hoisting mechanism 6 operated by moving the sliding frame 3 back and forth between the base frame 2 and the sliding frame 3. A back support bottom 7 assembled so as to be able to form the same plane as the receiving bottom 5, storage means 8 assembled between the base frame 2 and the sliding frame 3 via the undulation mechanism 6, and the waist 8 It is mainly composed of a leg receiving bottom 9 assembled so as to form a plane parallel to the receiving bottom 5 and the posture change switching means 1.
Hereinafter, the structure of each part is demonstrated based on drawing.

First, the base frame 2 installed on the floor will be described with reference to FIGS.
The base frame 2 includes a front frame 10 and a rear frame 11, and these frames 10 and 11 are configured to be detachable from each other.
As shown in FIG. 1, the front frame 10 has a connecting pipe 14 with both ends bent upward in a front view, fixed between support columns 13 and 13 having installation legs 12 and 12 provided at the lower part. . Further, the front ends of the lower frame pipes 15 and 15 are fixed to the connecting pipe 14 so as to protrude rearward at a predetermined interval. A reinforcing member 16 is fixed between the rear portions of the lower frame pipes 15 and 15. Further, support plates 17 and 17 are fixed to the front portions of the lower frame pipes 15 and 15, and shaft members 18 and 18 are fixed to the front and rear portions of the support plates 17 and 17 so as to protrude inward. In addition, rollers 19 and 19 for guiding constituent members of the storage means 8 described later are assembled to the shaft members 18 and 18, respectively. Further, shaft members 20, 20 are fixed to the front portions of the support plates 17, 17 in a state of protruding outward, and rollers 21, 21 for supporting leg receiving bottoms 9 described later on the shaft members 20, 20. Is assembled. Further, locking shafts 22 and 22 are fixed to the rear portions of the lower frame pipes 15 and 15 so as to protrude inward, and substantially L-shaped guide plates 23 and 23 are fixed to the upper surface of the intermediate portion in plan view. Has been. Further, bearing members 24 and 24 are fixed to the lower frame pipes 15 and 15 near the rear front side so as to protrude outward. The guide plates 23 and 23 are respectively provided with lateral holes 23a and 23a.

  Next, as shown in FIG. 1, the rear frame 11 has a connecting pipe 26 fixed between support columns 25 and 25 having installation legs 12 and 12 provided at the lower part. Further, rear portions of the upper frame pipes 27 and 27 are fixed to the connecting pipe 26 so as to protrude forward at a predetermined interval, and are substantially L-shaped in a plan view on the lower surface of the middle frame of the upper frame pipes 27 and 27. The locking plates 28 and 28 having a shape are fixed, and a reinforcing member 29 is fixed between the locking plates 28 and 28. Further, support plates 30 and 30 configured in a substantially L shape in front view are fixed to the front outer surfaces of the upper frame pipes 27 and 27, and connecting pipes 31 and 31 are fixed to the front lower surface, respectively. Yes. Further, shaft members 32, 32,... Are fixed to the front and middle portions of the upper frame pipes 27, 27 in a state of projecting inward, and a sliding frame 3 described later is attached to the shaft members 32, 32. Rollers 33, 33,... For guiding are assembled. Further, support members 34, 34 configured to function as a buffer member by bending the plate are fixed to rear upper surfaces of the upper frame pipes 27, 27, and a mounting plate to which a waist support bottom 5 described later is assembled is attached to the front part. 35 and 35 are fixed. Locking grooves 28a and 28a having an opening in the front are provided in front lower portions of the locking plates 28 and 28, respectively, and horizontal holes 31a and 31a are formed in the connecting pipes 31 and 31, respectively. It is installed. Further, a bracket 36 for assembling a driving means 4 to be described later is fixed to an intermediate portion of the connecting pipe 26.

The front frame 10 and the rear frame 11 thus configured are assembled as follows.
First, as shown in FIG. 1, the rear frame 11 and the front frame 10 are held in a substantially C shape in a side view, and the locking shafts 22 and 22 of the front frame 10 are held by the locking plates of the rear frame 11. Hook in the locking grooves 28a, 28a provided in the 28, 28.
Thereafter, when the support of the front frame 10 and the rear frame 11 is released, as shown in FIG. 2, the connection pipes 31 and 31 of the rear frame 11 are located inside the guide plates 23 and 23 of the front frame 10. To come along. The lower surfaces of the connection pipes 31 and 31 come into contact with the upper surfaces of the lower frame pipes 15 and 15. In this state, as shown in FIG. 2, the connecting pins 37, 37 communicate with the holes 23a, 23a, 31a, 31a provided in the guide plates 23, 23 and the connecting pipes 31, 31, respectively. is doing. The connecting pins 37, 37 are assembled with retaining pins (not shown) for preventing the dropping.

Next, the sliding frame 3 will be described with reference to FIG.
The sliding frame 3 has substantially U-shaped rails 38, 38 when viewed from the front. The open sides of the rails 38, 38 face outward, with a predetermined interval between the rear and intermediate portions. The reinforcing member 39 and the connecting pipe 40 are fixed. Further, rocking cams 41 and 41 having a substantially angle shape in a side view are fixed to the upper surfaces of the front portions of the rails 38 and 38, respectively, and a reinforcing member 42 is fixed between the front parts of the rocking cams 41 and 41. . Further, guide plates 45 and 45 are fixed to the inner side surfaces of the front portions of the rails 38 and 38, which are fixed in a state where the first fixing pin 43 and the second fixing pin 44 project inward at a predetermined position. Yes. Further, air holes 45a, 45a are bored at the upper rear portions of the first fixing pins 43, 43 of the guide plates 45, 45, and air holes 41a having an axial center on the axis of the air holes 45a, 45a. , 41a are formed in the swing cams 41, 41, respectively. An attachment 46 for attaching a driving means 4 to be described later is fixed to the intermediate portion of the connecting pipe 40.

As shown in FIG. 3, the sliding frame 3 constructed as described above is provided with rollers 33, 33,... Provided on the rear frame 11 of the base frame 2 in the rails 38, 38. As described above, it is inserted between the upper frame pipes 27 of the rear frame 11. Then, as shown in FIG. 4, the front portion of the actuator 47 that can be appropriately expanded and contracted as the driving means 4 is attached to the fixture 46 of the sliding frame 3 with a pin 48, and the rear portion is attached to the rear side of the base frame 2. Attached to the bracket 36 provided on the frame 11 with pins 49. By attaching the driving means 4 in this way, the sliding frame 3 is provided with the rails 38 and 38 of the sliding frame 3 on the base frame 2 when the driving means 4 is appropriately expanded and contracted by operation of a control device (not shown). Further, it is guided by the rollers 33, 33,... And moves back and forth with respect to the base frame 2.
In this embodiment, an extendable actuator 47 is used as the driving means 4. However, the driving means 4 may be any one that can move the sliding frame 3 back and forth with respect to the base frame 2. It is constructed by screwing of a screw, or a structure in which a loop-like chain or the like is pushed and pulled by rotation of a motor attached to the base frame 2, and a sliding frame 3 is attached to a part of this chain. There is no problem even if it exists.

Next, the raising / lowering mechanism 6 operated by the back and forth movement of the back support bottom 7 and the sliding frame 3 will be described with reference to FIGS.
First, as shown in FIG. 6, the back support bottom 7 has a frame pipe 50 bent in a substantially U shape with the front side opened in a plan view, and a connecting pipe 51 is fixed between the end portions. ing. Further, the front end portions of the support pipes 52, 52 bent in a substantially square shape in a side view are fixed to each other at a predetermined interval in the left-right direction in a state of projecting to the front lower side of the connection pipe 51. In addition, brackets 53 and 53 are fixed in a state of protruding forward at positions outside the support pipes 52 and 52 of the connection pipe 51. Further, a plurality of stay members 54, 54,... Are fixed between the rear side of the frame pipe 50 and the connecting pipe 51.

Subsequently, the hoisting mechanism 6 mainly includes an amplification link 55, a rotation link 56 fixed to the back support bottom 7, and rods 57 and 57 assembled between the back support bottom 7 and the base frame 2. Has been.
As shown in FIG. 5, the amplifying link 55 is provided with substantially reverse-shaped locking grooves 58a and 58a having openings on the upper side, and hooks 58b and 58b formed at the rear. A connecting member 59 is fixed between the front portions of the amplification plates 58 and 58 with the plates 58 and 58 spaced apart by a predetermined distance. The rear end portions of the locking grooves 58a and 58a are formed in an arc shape, and the outer circumferences of the hook portions 58b and 58b are configured to be concentric with this arc. In addition, fixing pins 60 and 60 are fixed to intermediate portions of the amplification plates 58 and 58 so as to protrude inward. Further, fixtures 61 and 61 of the storage means 8 described later are fixed to the intermediate portion of the connecting member 59.

  Next, as shown in FIG. 6, the rotating links 56, 56 are configured to separate the rotating plates 62, 62 provided with locking grooves 62a, 62a having openings on the front side at predetermined intervals. In this state, the connecting pipe 63 is fixed between the rotating plates 62 and the rear part of the rotating plate 62. Further, air holes 62b and 62b are formed in the rear portions of the rotating plates 62 and 62, respectively. The rotation link 56 is fixed to the front portions of the support pipes 52, 52 of the back support bottom 7 in a state where the inner side surfaces of the left and right rotation plates 62, 62 are arranged. .

  The rod 57 is composed of a pair of left and right, and as shown in FIG. 8, one end of the inner rod 66 is inserted into the outer rod 65 with the boss material 64 fixed to one end thereof. It is configured.

Each member of the hoisting mechanism 6 configured as described above is assembled to the sliding frame 3 and the base frame 2 as follows.
First, as shown in FIG. 5, first fixing pins 43, 43 fixed to the guide plates 45, 45 of the sliding frame 3 in locking grooves 58a, 58a provided in the amplification plates 58, 58 of the amplification link 55, respectively. The amplification plates 58 and 58 are hooked so as to pass through. Then, the front side of the amplification links 55, 55 is rotated downward about the first fixing pins 43, 43 so that the tips of the hook portions 58b, 58b are connected to the guide plates 45, 45 and the second fixing pins. The amplification link 55 is assembled by being inserted between the flange portions 44 and 44. Next, as shown in FIG. 6, the locking pins 62a and 62a provided on the rotation plates 62 and 62 of the rotation link 56 fixed to the back bottom 7 are fixed to the amplification link 55, respectively. The rotation link 56 is assembled so as to pass through 60, 60. Then, as shown in FIG. 7, holes 41a, 41a, 45a, 45a provided in the swing cams 41, 41 and the guide plates 45, 45 of the sliding frame 3 and the rotating plates 62, 62, respectively. The fulcrum pins 67 and 67 are communicated with the hole portions 62b and 62b provided in FIG. In this state, when the amplification link 55 rotates about the first fixing pins 43, 43, the outer periphery of the hook portions 58 b, 58 b of the speed-increasing plates 58, 58 rotates while contacting the fulcrum pins 67, 67. It is supposed to move. That is, the speed increasing plates 58 and 58 of the amplifying link 55 are configured to rotate while being prevented from being detached by the second fixing pins 44 and 44 and the fulcrum pins 67 and 67. Although not shown in the drawings, the fulcrum pins 67 and 67 are assembled with retaining pins for preventing the dropping.
Then, as shown in FIG. 8, the boss members 64, 64 provided on the outer rods 65, 65 of the rods 57, 57 and the brackets 53, 53 of the back support bottom 7 are pivotally connected by shaft pins 68, 68. At the same time, the end portions of the inner rods 66 and 66 and the bearing members 24 and 24 provided on the front frame 10 of the base frame 2 are pivotally connected by shaft pins 68 and 68.
In this manner, the members of the back support bottom 7 and the undulation mechanism 6 are assembled between the sliding frame 3 and the base frame 2.

Next, the waist support bottom 9 assembled to the base frame 2 will be described with reference to FIG.
The waist receiving bottom 5 has a connecting pipe 70 fixed between rear end portions of a frame pipe 69 bent in a substantially U shape with the rear side opened in plan view. Further, the support pipes 71 and 71 are spaced apart from each other by a predetermined distance in the left-right direction with the rear end portions of the support pipes 71 and 71 bent substantially in the shape of a letter in a side view projecting downward from the connection pipe 70. It is fixed. Further, mounting shafts 72 and 72 are fixed to the rear end portions of the support pipes 71 and 71 in a state protruding in the same direction, and rollers 73 and 73 and a downward protrusion are provided at positions close to the connecting pipe 70. Adjusters 74, 74 with adjustable amounts are provided. A plate 75 is fixed to an intermediate portion of the connection pipe 70 so as to be positioned between the support pipes 71, 71. Further, a plurality of support members 76, 76,... Bent in a substantially U shape in plan view are fixed in the connection pipe 70 and the frame pipe 69.

As shown in FIG. 9, the waist support bottom 5 configured in this way is inserted into the mounting plates 35 and 35 provided on the base frame 2 after the mounting shafts 72 and 72 are inserted. Assemble.
The waist support bottom 5 assembled in this way is in a state in which the adjusting tools 74 and 74 are in contact with the support plates 30 and 30 provided on the base frame 2, and the waist support bottom 5 is substantially horizontal with respect to the floor surface. It is in a state held in a state.

Next, the leg receiving bottom 9 and the storage means 8 assembled between the base frame 2 and the sliding frame 3 via the hoisting mechanism 6 will be described with reference to FIG.
First, the leg receiving bottom 9 has a connecting pipe 78 fixed between the ends of a frame pipe 77 bent in a substantially U shape with the rear side opened in plan view. Further, support pipes 79, 79 and reinforcing members 80, 80,... Are fixed in the connecting pipe 78 and the frame pipe 77 at a predetermined interval, and an appropriate interval is provided at the front portion in the frame. The mounting shafts 81 are fixed. In addition, storage cams 82 and 82 are fixed to the rear outer surfaces of the support pipes 79 and 79 in a state of protruding rearward and downward.

Next, the storage means 8 is mainly composed of a slide frame 83 and an interlocking rod 84 serving as the posture change switching means 1.
First, the interlocking rod 84 is formed by inserting the inner pipe 85 into the outer pipe 86 so as to be nested. Holes 85a and 86a are provided in the intermediate portions, and the hole portions 85a and 86a are provided. The pin 87 is inserted through the pin 87 and can be held at a fixed length. Further, by pulling out this pin 87, it is possible to make it extendable.
The slide frame 83 has a connection pipe 89 fixed between the front ends of the rails 88 and 88 arranged at a predetermined interval so that the substantially U-shaped open side faces outward in a front view. , 88 is fixed between the rear portions of the reinforcing member 90, which is bent in a substantially square shape when viewed from the front. The bearing plates 91 and 91 are fixed to the upper surface of the connection pipe 89 at a predetermined interval, and the bracket 92 is fixed to the rear surface of the intermediate portion. The rails 88, 88 are bent in a substantially inverted H shape when viewed from the side. In addition, empty rear portions 88a and 88a are respectively provided at intermediate portions of the rails 88 and 88, and the above-described pin 87 can be inserted therethrough.
The interlocking rod 84 is pivotally connected to the bracket 92 of the slide frame 83 by a pin 93 at the front end of the outer pipe 86 serving as the front end.

The leg receiving bottom 9 and the storage means 8 configured as described above are assembled between the base frame 2 and the sliding frame 3 through the hoisting mechanism 6 as follows.
First, the storage means 8 moves the slide frame 83 in the rails 88, 88 of the slide frame 83 so that the rollers 19, 19,... Provided on the front frame 10 of the base frame 2 roll. The front frame 10 is assembled between the support plates 17 and 17 so as to be slidable back and forth. Then, the rear end portion of the interlocking rod 84 is pivotally connected to a fixture 61 provided on the amplification link 55 of the hoisting mechanism 6 by a pin 94, and the storage means 8 is assembled to the hoisting mechanism 6 and the base frame 2.
Next, the mounting shafts 81 and 81 of the leg receiving bottom 9 are pivotally connected to the bearing plates 91 and 91 of the slide frame 83, and the leg receiving bottom 9 is assembled to the slide frame 83 so as to be rotatable.
Although not shown, the mounting shafts 81 and 81 and the pins 94 are prevented from falling off.

  By assembling the leg support bottom 9 and the slide frame 83 in this manner, the interlocking rod 84 is pushed back and forth with the rotation of the amplification link 55 of the hoisting mechanism 6, and the slide frame 83 is moved to the rollers 19 of the base frame 2. 19,..., It is moved obliquely in the front-rear direction. Further, the rollers 21 and 21 provided on the base frame 2 in contact with the storage cams 82 and 82 of the leg receiving bottom 9 roll along the storage cams 82 and 82 as the slide frame 83 moves back and forth, and the leg receiving bottom 9 Is rotatable around the mounting shafts 81 and 81.

Next, the operation of the bed B will be described with reference to FIG.
First, the operation in a state where the pin 87 is inserted into the hole portions 85a and 86a of the interlocking rod 84 which is the posture change switching means 1 will be described.
First, in the bed state shown in FIG. 5A, the driving means 4 is in the most extended state, and the sliding frame 3 is moved most forward with respect to the base frame 2. In this state, the waist receiving bottom 5 is in a state where the adjusters 74, 74 provided on the waist bottom 5 are in contact with the support plates 30, 30 provided on the base frame 2, and are substantially horizontal with respect to the floor surface. Is retained. Further, the back support bottom 7 is also in contact with the support members 34 provided on the base frame 2 and is held in a horizontal state. Then, the rotation link 56 fixed to the back support bottom 7 is in a state of being rotated forward and upward, and the amplification link 55 is also rotated in the upward direction of the front. Therefore, the interlocking rod 84 of the storage means 8 is pushed forward, and the slide frame 83 is pushed forward. In this state, the storage cams 82 and 82 of the leg receiving bottom 9 are held in a state of riding on the rollers 21 and 21 of the base frame 2, and the leg receiving bottom 9 is held in a horizontal state. Thus, when the drive means 4 is extended, the back support bottom 7, the waist support bottom 5, and the leg support bottom 9 are in a state of forming substantially the same plane, and the bottoms 5, 7, The mattress (not shown) placed on the upper surface of 9 can take a normal supine posture.

Next, when the driving means 4 is contracted and the state shown in FIG. 12B is reached, the sliding frame 3 moves rearward with respect to the base frame 2. At this time, the rollers 73 and 73 provided on the waist support bottom 5 roll along the swing cams 41 and 41 provided at the front part of the sliding frame 3, and the front part side of the waist support bottom 5 rotates upward. Is done. At the same time, the back support bottom 7 is in a state where the rods 57 and 57 are bumped while the front end side of the back support bottom 7 is moved rearward by the rearward movement of the sliding frame 3, and is gradually rotated upward. In this way, the back support bottom 7 is gradually raised up. Further, when the back support bottom 7 rotates upward, the rotation link 56 at the front end of the back support bottom 7 rotates downward. As the rotation link 56 rotates downward, the amplification link 55 also rotates downward. The interlocking rod 84 is retracted so as to be interlocked with this, and the leg support bottom 9 moves backward together with the slide frame 83. Further, the storage cams 82, 82 of the leg receiving bottom 9 slide along the rollers 21, 21 of the base frame 2, and move below the waist receiving bottom 5.
At this time, since the interlocking rod 84 is held at a fixed length by the pin 87, the slide frame 83 can be retracted in conjunction with the rotation operation of the amplification link 55.

When the driving means 4 is further contracted, the sliding frame 3 is moved to the rear portion of the base frame 2 as shown in FIG. 12 (c). At this time, the rollers 73, 73 roll along the swing cams 41, 41 of the sliding frame 3 in the waist receiving bottom 5, and the front side of the waist receiving bottom 5 is rotated downward. The waist support bottom 5 is supported by the support plates 30 and 30 of the base frame 2 by the adjusting tools 74 and 74 and returns to a substantially horizontal state.
Further, the back bottom 7 is further raised, and the rotation link 56 and the amplification link 55 are further rotated rearward. In conjunction with this, the interlocking rod 84 is further retracted, and the slide frame 83 and the leg support bottom 9 are moved rearward to a position located below the waist support bottom 5 so that the user can automatically take a sitting posture. It has become.
When the driving unit 4 is extended, the reverse operation is performed.

  As described above, the bed B is operated, and the bottoms 5, 7, 9 become horizontal by extending and retracting the driving means 4. (A) From the bed state shown in FIG. At the same time, the bottoms 5, 7 and 9 can be moved to the chair state shown in FIG. Further, as the back support bottom 7 is raised, the waist support bottom 5 rotates upward, so that a person lying on the bed B can be prevented from shifting forward.

  Further, as shown in FIG. 13, the pin 87 of the interlocking rod 84 which is the posture change switching means 1 is connected to the interlocking rod in the state in which the leg receiving bottom 9 is positioned at the forefront (the state shown in FIG. 12 (a)). 84, and is inserted into one of the air holes 88a, 88a provided in the rails 88, 88 of the slide frame 83, the connecting rod 84 is in an expandable state, and a pin 87 inserted through the slide frame 83 is provided. The state comes into contact with the roller 19 of the base frame 2, and the slide frame 83 is fixed. Therefore, as shown in FIG. 13, even when the back support bottom 7 and the waist support bottom 5 are in the up-and-down motion, the leg support bottom 9 maintains this state, Similarly, the sitting posture with the legs extended can be taken.

Thus, the bed B is provided with the hoisting mechanism 6 so that the bed B can be comfortably spent on the bed B, and is provided with storage means 8 for storing the leg support bottom 9 below the waist support bottom 5. The bottoms 5, 7, and 9 can be operated in a horizontal state and a chair-like state.
Furthermore, posture change switching means 1 is provided so that a chair-like state that makes it easy to stand up and a sitting position with the legs extended can be taken. In the switching method of the posture change switching means 1, the pin 87 is inserted into the holes 85 a and 86 a of the interlocking rod 84 or the holes 88 a and 88 a of the slide frame 83 with the leg receiving bottom 9 moved to the foremost part. Since it only plugs in either, it can be switched easily.
Therefore, even if it is difficult to get up from bed B due to a decline in athletic ability due to aging, etc., take a sitting posture conveniently by changing bed B into a chair state without changing the direction of the body And can stand up from the state to the front of the bed B using the open space in front of the bed B.
Then, when the treatment is centered rather than standing up, as described above, the slide frame 83 is fixed, the leg receiving bottom 9 is left as it is, and the back receiving bottom 7 and the waist receiving bottom 5 are raised and lowered. In this way, it is possible to provide more comfortable treatment.
By using the bed B having such an effect, it can be effectively used even in a home care situation in a general home.

Overall perspective view showing the configuration of the base frame Overall perspective view showing the assembled state of the base frame The perspective view which shows the structure of a sliding frame The perspective view which shows the assembly state of a bed frame, a sliding frame, and a drive means. A perspective view showing the configuration of the amplification link The perspective view which shows the structure of a sliding frame, an amplification link, and a back support bottom The principal part expansion perspective view Perspective view of assembly explanation of back support bottom Perspective view showing the configuration of the waist support bottom The perspective view which shows the structure of a storage mechanism and a leg receiving bottom. Overall perspective view showing the bed Operation explanatory diagram when posture change switching means is released Operation explanatory diagram when the posture change switching means is operated

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Posture change switching means 2 Base frame 3 Sliding frame 4 Drive means 5 Waist receiving bottom 6 Lifting mechanism 7 Back receiving bottom 8 Storage mechanism 9 Leg receiving bottom 84 Interlocking rod 85 Inner pipe 86 Outer pipe 87 Pin

Claims (2)

  A sliding frame is provided through a driving means so as to be movable back and forth along the base frame, and the base frame and the sliding frame are provided with a back support bottom through a hoisting mechanism, and the base frame has a waist. Attach the receiving bottom and move the slide frame by moving the slide frame back and forth in a bed that has a leg support bottom on the slide frame that moves back and forth along the base frame in conjunction with the back and forth movement of the slide frame. A bed characterized by comprising a posture change switching means that can be set to a state in which the footrest bottom is held without being interlocked with the state to be moved.   The pin is inserted into the slide frame while allowing the slide frame to move back and forth in conjunction with the back and forth movement of the sliding frame so that the pin is inserted into the telescopic interlocking rod that is telescopic and held in a fixed length. A bed comprising: a posture change switching means configured to constrain the movement of the slide frame back and forth and the interlocking rod to be in a telescopic state.

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