JP2007082872A - Bed whose posture can be changed to chair mode - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To change the posture of a bed to a chair mode, and to reduce the weight of the bed by further simplifying the structure. <P>SOLUTION: A bottom part of the bed is divided. A back receiving bottom is journaled to a back-raising link which is pivotally attached to a base frame and a sliding frame which can be moved forward/backward to the base frame, so that the back of a bed user can be raised from the horizontal state upward in the rear direction. A waist receiving bottom is journaled to the base frame and can be oscillated upward/downward with an angle cam. A leg receiving bottom is pivotally supported on a rail frame which can be moved downward in the rear direction to the base frame. The rail frame is hooked to an interlocking link journaled to the sliding frame via a hook member, and the interlocking link is amplified and rotated by the back receiving bottom. The rail frame is drawn downward in the rear direction as the sliding frame is moved backward, so that the rail frame can be stored in the rear under the waist receiving bottom. The posture of the bed can be changed to a flat mode in which a head side mattress on the back receiving bottom and the waist receiving bottom and a leg side mattress on the leg receiving bottom are flat, or to the chair mode. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a bed that can be raised up.

Conventionally, there is a bed which can be operated as shown in FIG. As shown in the figure, this bed is composed of a back side floor portion, a waist side back floor portion, a waist floor portion, an upper thigh floor portion, and a lower thigh floor portion, which are connected to bend the floor portion of the bed. And a floor part is raised and lowered by pushing up a back side back floor part and a waist side back floor part upward using the back raising mechanism which is not illustrated. In the bed shown in this figure, the knee raising mechanism is also driven in conjunction with the back raising mechanism so that the upper thigh floor portion and the lower thigh floor portion are raised and lowered (see, for example, Patent Document 1).
In addition, there is a second form different from the above. This is shown in FIG. In this form of bed, while raising the back, the leg panel is pivotally attached to the thigh panel, and the thigh panel can be changed from a horizontal state to a suspended state, The form can be changed between a bed state and a chair state (for example, see Patent Document 2).

As described above, various types of beds that can be raised up are proposed. However, in the bed in which the back can be raised in the first form, the body must be rotated 90 degrees when getting out of the bed, and must stand up from the posture in the end-sitting position at the bedside. Moreover, in the second form, in order to make the sitting posture in a chair state easy, it is necessary to make the thigh panel approximately the same size as the length from the hip to the knee. When the size of the thigh panel is reached, the leg panel has a disadvantage that the leg protrudes from the bed when lying on the bed unless the leg panel is longer than the length below the knee. Therefore, it becomes a large leg panel, and the leg of the user may not reach the floor in the sitting state.
As described above, the conventional back-upable bed is suitable for the medical treatment on the caregiver's bed, but is not very suitable for the medical caregiver to get out of the bed.

  Therefore, there are the following beds proposed to solve these problems. This bed is placed on a sliding frame where the back and waist supports slide relative to the bed frame, and the back and waist supports approach the head side by sliding the sliding frame toward the head side. While being bent. Furthermore, at this time, the leg support supported by the sliding frame via the four-bar link is rotated downward while moving backward, and is stored under the waist support so that the posture can be changed to a chair-like state. (For example, see Patent Document 3).

JP-A-11-113977 Japanese National Patent Publication No. 9-508041 JP 2004-298372 A

A bed that can be repositioned into a chair shape as described above is easy to get out of bed because it can be in a sitting position without changing the direction of the body for people with reduced walking ability, and resistance to getting out of bed. The feeling disappears. Therefore, in order to widely disseminate this type of bed, it is desired to further simplify the configuration, reduce the weight, and improve the comfort when using the bed.
Therefore, in the present invention, the floor portion is configured to be bent in the same manner as a conventional bed that can be raised up, and the posture can be changed to a chair-like state by storing the leg receiving bottom below the waist receiving bottom as the back is raised. It is an object to further reduce the weight and the like by further simplifying the configuration.

According to the first aspect of the present invention, the floor portion of the bed is divided into at least a back support bottom, a waist support bottom, and a leg support bottom, and the back support link is pivotally attached to a base frame. And a back frame that slides back and forth from a horizontal state by bearing on a sliding frame that slides back and forth along a sliding cylinder provided in the base frame, and the waist support bottom is vertically moved to the base frame. The leg support bottom is pivotally supported on a rail frame that is movable rearward and downward with respect to the base frame. The rail frame is hooked to an interlocking link supported by the sliding frame via a hook member, and the interlocking link is amplified and rotated by the rotation of the back support bottom. The rail frame is retracted rearward and downward in conjunction with the rearward movement of the sliding frame so that it is housed in the lower back of the waist support bottom, and is placed on the back support bottom and the waist support bottom. The sliding frame is moved backward by the driving means provided between the base frame and the sliding frame from the state in which the mattress on the head side and the leg mattress placed on the leg support bottom form substantially the same plane. This is characterized in that the posture can be changed to a chair-like state.
And in invention of Claim 2, the hook member which can be latched by the said interlocking link is pivotally attached to a rail frame, The state which this hook member was latched by the interlocking link, and the latching state are cancelled | released In addition, the switching means is provided so as to be appropriately operable between the state in which the rail frame is held.
Furthermore, in the invention of claim 3, the backrest bottom is configured to be raised so that the backrest rises upward, and the backrest bottom is formed so that a space in which the central lower portion is recessed from the plane formed by the backrest bottom is formed. It is characterized by comprising a configured back support bottom.
Further, in the invention of claim 4, the head side mattress provided on the back support bottom and the waist support bottom, and the opposing surfaces of the leg side mattress provided on the leg support bottom are configured to be inclined downward in the rearward direction. It is characterized by that.
In the invention of claim 5, the rail frame moves forward and upward in conjunction with the forward movement of the sliding frame, and the leg support bottom supported by the rail frame is positioned higher than the back support bottom and the waist support bottom. The leg-side mattress provided on the leg support bottom is made thinner than the head-side mattress provided on the back support bottom and the waist support bottom.

According to invention of Claim 1, the floor part of the bed is divided | segmented into the back receiving bottom, the waist receiving bottom, and the leg receiving bottom. The back support bottom is attached to a back raising link pivotally attached to the base frame and a slide frame that slides back and forth in a slide cylinder provided in the base frame. Thus, since it is comprised so that the inside of a sliding cylinder may slide back and forth, unlike the sliding frame using a rail member etc., the approach of dust and a foreign material can be prevented. Therefore, troubles such as breakdowns can be minimized even when the use period is long. The waist-receiving bottom is supported by the base frame so as to be pivotable up and down, and the cam acts as the sliding frame moves back and forth by a mountain-shaped cam provided on the sliding frame, and the waist-receiving bottom swings. Move. Further, the leg support bottom is pivotally attached to a rail frame that is movable rearward and downward relative to the base frame. This rail frame is hooked to an interlocking link pivotally attached to the sliding frame via a hook member. The interlocking link is configured to be amplified and rotated by the rotation of the back support bottom. Therefore, the leg support bottom can be pulled backward more than the moving amount of the sliding frame. In the bed configured in this manner, the head side mattress placed on the back support bottom and the waist support bottom and the leg side mattress placed on the leg support bottom form substantially the same plane. The posture can be changed to a chair-like state by moving the sliding frame backward. Therefore, the user can use it as a general bed, and can take a posture in which the user is automatically seated without reversing the body, so that the bed is easy to stand up. Furthermore, the structural members are simplified and the weight is reduced.
According to the invention of claim 2, by appropriately operating the switching means, the rail frame can be held and restrained in a state where the interlocking link and the hook member are hooked and released. . Therefore, it is possible to obtain a gatch state in which the leg support bottom is positioned in front of the waist support bottom in a state where the floor of the bed is substantially horizontal, a chair-like state, and a back-up state. Therefore, the state of the bed can be changed according to the use situation of the user, and medical treatment and getting out of bed are performed comfortably.
In the invention of claim 3, the lower portion of the backrest bottom that is raised up so as to rise up is configured such that the central lower portion is recessed from the plane formed by the backrest bottom. Therefore, when sitting deeply in a state where the back is raised, the waist is held on both sides and a more stable state can be maintained.
In the invention of claim 4, the opposing surfaces of the head-side mattress and the leg-side mattress are configured so as to be inclined downward. Therefore, when the leg support bottom moves rearward and downward, the movement is smoothly performed. Further, in a state where both mattresses are positioned on substantially the same plane, there is an effect that foreign matter or the like can be prevented from being caught between the mattress gaps.
In the invention of claim 5, the leg receiving bottom is arranged at a position higher than the back receiving bottom and the waist receiving bottom, and the leg side mattress is made thinner than the head side mattress. The load applied to the bottom of the footrest is small, and even a thin mattress can be used without a bottom sensation. By using a thin mattress, it is possible to reduce the space in the height direction to be stored below the waist support bottom, and to lower the floor.

  The bed floor is divided into a back support bottom, a waist support bottom and a leg support bottom. The base frame is provided with a sliding cylinder in the front-rear direction, and a sliding frame that slides back and forth within the sliding cylinder is provided. The back support bottom is supported by the back raising link pivotally attached to the base frame and the sliding frame. The waist support bottom is supported by a base frame so as to be rotatable up and down, and is configured to swing by a mountain-shaped cam provided on the sliding frame. Furthermore, a rail frame is provided so as to be movable rearward and downward relative to the base frame. The footrest bottom is supported on the rail frame. The rail frame is configured to be able to be hooked to an interlocking link supported by the sliding frame via a hook member. The hook member is configured to be able to be set in a state where it is hooked to the interlocking link by the switching means, a state where the hooking state is released, and a state where the rail frame is held and restrained. Further, the interlocking link is configured such that the rotation angle is amplified by the back-up rotation of the back support bottom, and the floor surface forms a substantially same plane, and the leg support bottom is stored below the waist support bottom. A bed whose posture can be changed to a gatch state where the leg rest bottom is located in front of the waist rest bottom in a chair-like state and a back-up state.

  Next, an embodiment of a bed whose posture can be changed to a chair-like state according to the present invention will be described with reference to the drawings. First, FIG. 1 is a state explanatory view showing an operating state of a bed whose posture can be changed to a chair-like state according to the present invention. As shown in the figure, the present invention has a posture change mode in which the legs are housed below the waist as the back is raised, and a back similar to a conventional bed in which the legs remain in the state even when the back is raised. It is possible to perform a posture change mode for raising. The user can select and operate the posture changing mode as appropriate.

First, a bed 1 that can be changed in posture to a chair-like state according to the present invention has a base frame 2 installed on the floor and a driving means 3 so as to be movable back and forth relative to the base frame 2. A slide frame 4 attached to the base frame 2, a back support bottom 6 attached to the slide frame 4 via a back raising link 5 attached to the base frame 2, a waist support bottom 7 supported on the base frame 2, A rail frame 8 configured to be movable back and forth relatively with respect to the base frame 2, a leg receiving bottom 9 supported by the rail frame 8, and an interlocking link acting on a storing operation of the leg receiving bottom 9 10 is mainly composed.
Hereinafter, each part is explained in full detail.

First, the base frame 2 will be described. As shown in FIG. 2, the base frame 2 includes bed legs 11, 11,... At four corners. The bed leg 11 is formed by fixing a pipe 13 to a grounding member 12. .. Are inserted into reed pipes 14, 14,... Arranged at the four corners of the base frame 2, and can be appropriately set with bolts (not shown).
A connecting pipe 15 is fixed between the rear side pipes 14 and 14, and vertical pipes 16 and 16 are fixed to the lower surface of the connecting pipe 15. Further, support pipes 18 and 18 are fixed between the back surfaces of the connecting pipes 17 fixed between the bottom surfaces of the vertical pipes 16 and 16 and the front side pipes 14 and 14. In addition, support pipes 18 and 18 are fixed to the central portions of the support pipes 18 and 18 in a state of being separated from each other in the front-rear direction, and reinforcing pipes 21 are fixed to the upper portions of the support pipes 19 and 20, respectively. A reinforcing pipe 22 is also fixed between the left and right support pipes 19 and 19. On the reinforcing pipe 22, sliding cylinders 23, 23 whose end portions are fixed to the connecting pipe 15 are fixed in a state of being spaced apart by a predetermined distance. Reference numeral 24 denotes a support member for the back support bottom 7 fixed to the slide cylinders 23, 23.
A mounting bracket 25 of the driving means 3 is fixed to the front surface of the intermediate portion of the rear connecting pipe 15. Boss members 26 and 26 to which the back raising links 5 and 5 are attached are fixed to intermediate portions of the left and right support pipes 18 and 18, respectively. Further, rollers 27 and 27 for supporting the sliding frame 4 are supported at intermediate portions of the support pipes 20 and 20, respectively, and air holes 20a and 20a serving as attachment portions for the waist support bottom 7 are provided on the upper portions. It is worn.
Further, support plates 28 and 28 for supporting the rail frame 8 are fixed to the front portions of the left and right support pipes 18 and 18, and rollers 29 and 29 are supported on the support plate 28, respectively. In addition, brackets 30 and 30 are disposed on the outer sides of the support plates 28 and 28 in the left-right direction, and rollers 31 are supported.

In this way, the sliding frame 4 is inserted into the sliding cylinders 23, 23 of the configured base frame 2. The sliding frame 4 includes sliding pipes 32 and 32 inserted into the sliding cylinders 23 and 23. Rollers 33 and 33 are supported on the rear ends of the sliding pipes 32 and 32, respectively. A connecting pipe 34 is fixed between the left and right sliding pipes 32, and a bracket 35 for fixing the driving means 3 is fixed to an intermediate portion of the connecting pipe 34. In addition, angle cams 36 and 36 are fixed to the front of the sliding pipes 32 and 32 in order to swing the waist support bottom 7, which will be described later, respectively, and a plate 37 and a mounting portion for the back support bottom 6. 37 are fixed to each other. Holes 37a, 37a for supporting the back bottom 6 and holes 37b, 37b for supporting the interlocking link 10 are formed in the plates 37, 37, respectively.
The sliding frame 4 configured as described above is attached to the sliding cylinders 23 and 23 of the base frame 2 by inserting sliding pipes 32 and 32. At this time, the front portions of the sliding pipes 32 and 32 are supported by rollers 27 and 27 supported by the support pipes 20 and 20.
The sliding frame 4 slides back and forth while being inserted into the sliding cylinders 23 and 23 of the base frame 2 as described above. Therefore, a structure in which dust and foreign matter get stuck in the rail due to long-term use, such as a rail member that moves along the inside thereof, does not occur. Further, when the back is raised, the base frame 2 and the sliding frame 4 are visible from above, but the sliding cylinders 23 and 23 and the sliding pipes 32 and 32 are sandwiched so that they are sandwiched. There is also an effect that it can be prevented.
A driving means 3 that can be appropriately extended and retracted is attached between the base frame 2 and the brackets 25 and 35 of the sliding frame 4. In the present embodiment, an electric actuator is used as the driving means 3. However, the driving means 3 only needs to be extendable and contractible, for example, a hydraulic cylinder may be used, and the present invention is not limited to this embodiment. Absent.

Next, the back support bottom 6 will be described. The back bottom 6 is provided with a rectangular frame pipe 38 as shown in FIG. Support pipes 39 are fixed to the frame pipe 38. The support pipes 39 and 39 form substantially the same plane as the frame pipe 38 in a side view, and a protruding portion from the frame pipe 38 is bent forward and downward. The connecting pipe 40 is fixed to the front end portions of the support pipes 39, 39, and the mounting plates 41, 41 are fixed to both ends of the connecting pipe 40. Boss members 42 and 42 are fixed to the mounting plates 41 and 41, respectively, and elongated holes 41a and 41a are formed.
Further, brackets 43 and 43 are fixed to the vicinity of the front corner of the frame pipe 38, respectively. The brackets 43 are fixed so as to form substantially the same plane as the frame pipe 38 in a side view.

Next, the back link 5 will be described. As shown in FIG. 3, the back-up links 5 and 5 are used as a pair of left and right, and are configured symmetrically. The back-up link 5 is formed by fixing an L-shaped plate 45 to one end of a pipe 44 bent in an inverted shape in a side view and a boss member 46 fixed to the other end.
The back-up links 5 and 5 have L-shaped plates 45 and 45 attached to boss members 26 and 26 of the support pipes 18 and 18 of the base frame 2, respectively. 43 is supported.
The boss members 42, 42 fixed to the mounting plates 41, 41 of the back support bottom 6 are supported by the holes 37 a, 37 a of the plates 37, 37 of the sliding frame 4. It is attached.

An interlocking link 10 is disposed between the mounting plates 41 and 41 and the plates 37 and 37. As shown in FIG. 3, the interlocking link 10 has a connecting rod 48 fixed between the left and right plates 47, 47, and U-shaped hooks 49, 49 are fixed in the vicinity of both ends of the connecting rod 48. It will be. The plates 47 and 47 have holes 47a and 47b, respectively.
As shown in FIG. 8 (a), the interlocking link 10 constructed in this manner is supported by the holes 47a and 47a of the interlocking link 10 on the holes 37b and 37b of the plates 37 and 37 of the sliding frame 4. At the same time, the restriction pins 50 are attached so as to be inserted into the long hole portions 41a, 41a of the mounting plates 41, 41 of the back support bottom 6 and the hole portions 47b, 47b of the plates 47, 47.

A rail frame 8 is disposed on the front portion of the base frame 2. As shown in FIG. 4, the rail frame 8 has the connecting pipes 52 and 53 fixed to each other with the left and right rail members 51 and 51 spaced apart from each other, and protrudes rearward from the connecting pipe 52 on the rear side. Brackets 54, 54 are fixed to the front connection pipe 53, and brackets 55, 55 are fixed upward.
The rail members 51, 51 are curved so as to be slightly upward at the intermediate portion. Further, stepped support shafts 56 and 56 (see FIG. 9) are fixed to the brackets 54 and 54 so as to face the same direction.

A hook member 57 that can be hooked to the interlocking link 10 is attached to the brackets 54 and 54. The hook member 57 includes hook plates 58 and 58 provided with hook grooves 58a and 58a facing downward on the tip side. The hook plates 58 and 58 are spaced apart from each other by a predetermined distance, and a connecting rod 59 is fixed. Hole portions 58b and 58b are formed in the rear portions of the hook plates 58 and 58, respectively, and are supported by the stepped support shafts 56 and 56, respectively.
The rail frame 8 configured as described above is attached so that the rollers 29, 29,... Supported on the support plates 28, 28 of the base frame 2 roll in the rail members 51, 51.

  Further, a leg receiving bottom 9 is attached to the brackets 55, 55 of the rail frame 8. As shown in FIG. 5, the leg support bottom 9 includes a rectangular frame pipe 60 in plan view. A bent frame member 61 is fixed around the frame pipe 60. Mounting plates 62 and 62 are fixed to the front portion of the frame pipe 60. Support pipes 63 and 63 are fixed inside the frame pipe 60. Further, rocking cams 64 and 64 each having a lower horizontal portion 64a and a front-side oblique side portion 64b are fixed to the rear side of the lower surface of the frame pipe 60. A rear pipe 65 is fixed to the swing cams 64 and 64 and the support pipes 63 and 63.

  The leg receiving bottom 9 configured as described above is attached to the brackets 55 and 55 of the rail frame 8 by bearing the mounting plates 62 and 62 of the leg receiving bottom 9. The swing cams 64 and 64 act by sliding on the rollers 31 and 31 provided on the base frame 2.

  Next, the waist support bottom 7 will be described. The waist bottom 7 is provided with a U-shaped frame pipe 66 as shown in FIG. Further, reinforcing pipes 67, 67,... And support pipes 68, 68 are fixed inside the frame pipe 66. Mounting plates 69 and 69 are fixed to the rear ends of the support pipes 68 and 68, respectively. Rollers 70 and 70 are supported on the front portions of the mounting plates 69 and 69, respectively, and air holes 69a and 69a are provided on the rear portions. Further, support plates 71 and 71 are fixed to the mounting plates 69 and 69 so as to be disposed in front of the hole portions 69a and 69a. The support plates 71, 71 are provided with a flat portion 71 a so as to be orthogonal to the plane formed by the frame pipe 66.

  The waist receiving bottom 7 configured in this manner is attached to the base frame 2. Specifically, the holes 69a and 69a of the mounting plates 69 and 69 of the waist support bottom 7 are supported in the holes 20a and 20a provided in the support pipes 20 and 20 of the base frame 2. At this time, the rollers 70, 70 of the mounting plates 69, 69 roll on the mountain cams 37, 37 of the sliding frame 4 or the flat portions 71a, 71a of the support plate 71 are in contact with the front surfaces of the columns 20, 20. It is in a state of being hit.

The head-side mattress 72 and the leg-side mattress 73 are prevented from slipping on the back support bottom 6 and the waist support bottom 7 of the bed 1 configured as shown in FIG. (See FIG. 9).
The facing surfaces of the head-side mattress 72 and the leg-side mattress 73 are formed by cutting in an oblique direction. This reduces the catch of the mattresses 72 and 73 during the storing operation of the leg support bottom 9, and can greatly prevent objects from being caught in the gap when the mattresses 72 and 73 are flat. It is what you play.
Further, the leg-side mattress 73 is configured to be thinner than the head-side mattress 72. This is to secure a space for storage below the waist support bottom 7, but the load on the leg-side mattress 73 is extremely small compared to the back support bottom 6 and the waist support bottom 7, and the mattress is thinned. However, there is no bottom sensation or the like, and the experience is equivalent to a general mattress. Further, since the leg-side mattress 73 is thinned, the downward movement amount of the rail frame 8 and the leg receiving bottom 9 can be reduced, and the bed 1 can be lowered.

The bed 1 configured as described above is configured so that the backrest bottom 6 is raised and lowered, the waist support bottom 7 is vertically swung, and the leg support bottom 9 is retracted and retracted by the expansion and contraction action of the driving means 3. . The operation of each part will be described below.
First, a state in which the back receiving bottom 6, the waist receiving bottom 7, and the leg receiving bottom 9 form substantially the same plane will be described.
In this state, as shown in FIG. 9, the driving means 3 (not shown) is extended, and the sliding frame 4 is moved forward. At this time, the vicinity of the head of the back support bottom 6 is supported by the support member 24 and held in a horizontal state. In the waist receiving bottom 7, rollers 70, 70 are positioned on the sliding pipes 32, 32 from the rear ends of the angle cams 36, 36, respectively, and in this state, the horizontal portions 71a, 71a of the support plates 71, 71 are provided. The left and right support pipes 20 and 20 are in contact with each other, so that the waist support bottom 7 is held in a horizontal state. Next, the leg support bottom 9 is in a state in which the interlocking link 10 is swung forward due to the fall of the back support bottom 6, and is hooked on the hooks 49, 49 of the interlocking link 10. The rail frame 8 is supported by the hook member 57 in a state of moving forward. At this time, the horizontal portions 64a of the swing cams 64, 64 of the leg receiving bottom 9 are on the rollers 31, 31 of the base frame 2, and the leg receiving bottom 9 is held in a horizontal state.

If the sliding frame 4 is moved rearward by contracting the driving means 3 from the above-described state, it acts as shown in FIGS.
First, the back bottom 6 starts to move backward as the sliding frame 4 moves backward. At this time, the attachment portions of the back raising links 5, 5 and the back support bottom 6 are positioned forward and upward from the attachment portions of the back raising links 5, 5 and the base frame 2. It acts to push up the bottom 6. Therefore, the back support bottom 6 is raised up so as to rise upward while moving backward together with the sliding frame 4.
As the slide frame 4 moves backward, the waist support bottom 7 rolls the rollers 70, 70 of the waist support bottom 7 on the mountain cams 36, 36 of the slide frame 4. Therefore, the waist support bottom 7 attached to the base frame 2 is rotated upward with the holes 69a and 69a, which are attachment parts, as base ends. This upward rotation is caused by the backward movement of the sliding frame 4 so that the rollers 70 and 70 rotate upward while passing through the oblique sides of the angle cams 36 and 36 and while passing through the horizontal portion of the angle cams 36 and 36. The state rotated upward is maintained. Since the swing angle of the waist receiving bottom 7 can be changed by changing the cam shape, the mountain cams 36 and 36 may be configured to be replaceable. By changing this, the back raising angle of the back support bottom 6 and the swing angle of the waist support bottom 7 can be set as desired.
Next, the leg receiving bottom 9 will be described. As described above, when the sliding frame 4 is moved backward, the rail frame 8 is also drawn following the interlocking link 10, and the leg support bottom 9 is also moved backward relative to the base frame 2. At this time, the rollers 29, 29,... Before and after rolling in the rail members 51, 51 are attached in a state of being lowered rearward, so that the rail frame 8 and the footrest bottom 9 move relatively downward. Move backwards. Further, since the rail members 51, 51 are bent upward at the intermediate portion, the amount of downward movement increases when the rollers 29, 29,... Move forward from the bent portion. Further, since the rollers 31 and 31 of the base frame 2 roll on the oblique sides 64b and 64b from the horizontal parts 64a and 64a of the swing cams 64 and 64 of the leg receiving bottom 9, the leg receiving bottom 9 is inclined rearward. Become. When the sliding frame 4 further moves rearward, the rollers 31 and 31 are separated from the swing cams 64 and 64, and the rear pipe 65 of the leg receiving bottom 9 is put on the rail members 51 and 51. By proceeding at the same time, the leg support bottom 9 can be stored below the waist support bottom 7 while avoiding the waist support bottom 7.

Next, the operation of the interlocking link 10 that operates when the above-described rail frame 8 is retracted will be described. In the present embodiment, the amount of movement required for the leg receiving bottom 9 to be stored below the waist receiving bottom 7 is required to be larger than the amount of movement of the sliding frame 4. For this purpose, the pivoting action associated with the swinging of the back support bottom 6 is amplified by the interlocking link 10 to ensure the amount of movement of the leg support bottom 9.
This is as shown in FIG. 8 (b), and there are long holes 41a, 41a formed in the attachment plates 41, 41 of the back support bottom 6 of the interlocking link 10 attached to the sliding frame 4. The restriction pins 50 and 50 are actuated by rotating them. At this time, since the interval between the hole portions 47a and 47a, which is the rotation center of the interlocking link 10, and the regulation pins 50, 50 is narrower than the interval between the rotation center of the back support bottom 6 and the regulation pins 50, 50, the back is raised. The interlocking link 10 acts so as to rotate larger than the rotation angle associated with. Therefore, the rail frame 8 can be largely pulled backward by the movement amount of the interlocking link 10 and the movement amount of the sliding frame 4.
In addition, it becomes possible to use the comparatively short interlocking link 10 by comprising the interlocking link 10 as mentioned above, and also has the effect that the floor surface of the bed 1 can be comprised low.

And when the drive means 3 is made into the shortest state, it will be in the state shown in FIG.
At this time, the back support bottom 6 is in a state of standing up to the maximum angle while rising upward as the back is raised. As the back is raised, the mattress 72 placed on the back support bottom 6 and the waist support bottom 7 is bent. When the mattress 72 is bent, large elongation occurs on the outer surface of the bent portion. When the extension of the mattress 72 is constrained by friction with the back support bottom 6 and the waist support bottom 7, the user feels a sense of discomfort such as a feeling of pressure on the abdomen and a slip on the back. However, in the bed 1 according to the present embodiment, the backrest bottom 6 is moved up rearward and raised up so that it rises upward. Is possible. Accordingly, there is no deviation between the mattress 72 and the back bottom 6. For this reason, the user can comfortably change his / her posture because his / her back is lifted without feeling pressure on the abdomen or slipping back.
The back support bottom 6 is configured such that a flat surface is formed by the support pipes 40, 40 at positions lower than the flat surfaces formed by the upper portions of the brackets 43, 43 and the back raising links 5, 5, and the frame pipe 38. ing. As a result, when the back is raised, the rear portion supporting the waist is depressed, so that the user's body can be sufficiently held like a bucket type seat.

Next, the waist support bottom 7 will be described. When the sliding frame 4 moves to the rear end, the rollers 70 and 70 pass through the front inclined portions of the angle cams 36 and 36, and the flat portions 71 a and 71 a of the support plates 71 and 71 are connected to the support pipes 20 and 20. The waist support bottom 7 is held in a horizontal state.
Further, the leg receiving bottom 9 is sufficiently retracted by the action of the interlocking link 10 and is stored below the waist receiving bottom 7.
When the leg support bottom 9 is sufficiently retracted in this way, a space is formed below the waist support bottom 7 as shown by the hatched portion in FIG. By forming this space S, that is, the kick-in, the legs can be pulled in when standing up, and it is easier to stand up.

  Up to now, a series of operations accompanying the backward movement of the sliding frame 4 has been described. Conversely, when the sliding frame 4 moves forward, the operation is the reverse of the above description.

As described above, the bed according to the present invention has the following effects.
First, as can be seen from FIG. 9 and FIG. 12, the sliding frame 4 is configured to slide along the sliding cylinders 23, 23 fixed to the base frame 2. That is, in the sliding frame 4, since the sliding pipes 32, 32 slide in the sliding cylinders 23, 23, when the sliding frame is in the front end position (see FIG. 9), the lower side of the waist receiving bottom 7 The sliding frame 4 is located in the position. However, when the sliding frame 4 is moved to the rear end position (see FIG. 12), the sliding frame 4 is moved to the rear of the waist receiving bottom 7 and a space is provided below the waist receiving bottom 7. It has become. Therefore, the leg receiving bottom 9 can be stored below the waist receiving bottom 7 without largely moving in the vertical direction. Therefore, there exists an effect that it can comprise by what simplified the structure accompanying storage.
Furthermore, the raising / lowering operation of the back support bottom 6, the swinging operation of the waist support bottom 7, and the storage operation of the leg support bottom 8 are performed in conjunction with the expansion / contraction operation of the drive means 3. However, the raising / lowering operation of the back support bottom 6 is performed by the back and forth movement of the back raising links 5, 5 and the sliding frame 4, and the swinging operation of the waist receiving bottom 7 is performed by the back and forth movement of the sliding frame 4. , 36 are in contact with the rollers 70, 70 of the waist receiving bottom, and the storage operation of the leg receiving bottom 9 is performed by moving the rail frame back and forth of the sliding frame 4 and the amplifying action of the interlocking link 10. Therefore, the configuration is simplified. Therefore, the weight is also reduced, and as a result, it can be provided at a low cost.
Moreover, since the raising / lowering movement of the back support bottom 6 is performed so as to follow the expansion and contraction of the outer surface of the bent portion of the mattress 72, the raising / lowering movement has no feeling of pressure felt on the user's abdomen and no deviation on the back. .
Furthermore, when the chair-like state is set, the bed 1 is formed so that the leg can be pulled under the waist receiving bottom 7, so that the bed 1 is easier to stand up.

Next, the switching means 74 for changing the posture from the supine state shown in FIG. 1 to the chair state or the gatch state in the bed described in the first embodiment will be described.
The switching means 74 releases the hooked state with the interlocking link 10 by rotating the hook member 57 supported by the rail frame 8 upward, and the rail frame by hooking with the hook member 57. 8 is held to the base frame 2, and is configured as shown in FIGS.

First, in order to attach the switching means 74, holes 28a and 28a and long holes 28b and 28b are formed in the support plates 28 and 28 of the base frame 2. Further, plates 75 and 75 are fixed to the inner side surfaces of the support plates 28 and 28, respectively. The plate 75 is provided with a hole 75a so as to be aligned with the hole 28a, and a hole 75b is formed at the rear of the plate 75.
A support pipe 77 is fixed between the holes 75a and 75a of the plates 75 and 75. Regulating plates 78 and 78 are fixed in the vicinity of both ends of the support pipe 77, and ball plungers 79 and 79 are screwed in the vicinity of the ends, respectively. Further, holes 78a and 78a are provided at the ends of the regulation plates 78 and 78, and lever members 80 and 80, which are substantially L-shaped when viewed from the front, are fixed to the holes 78a and 78a. Is done. The lever members 80, 80 pass through the long holes 28b, 28b formed in the support plate 28.
Release plates 81 and 81 are fixed to the support pipe 77. The release plates 81 and 81 are fixed at a distance narrower than the distance between the hook plates 58 and 58 of the hook member 57, and hook grooves 81a and 81a that can be hooked to the connecting rod 59 are provided at the tip portion. Yes.

The switching means configured as described above operates as shown in FIG.
First, as described in the first embodiment, the case where the leg support bottom 9 moves in conjunction with the longitudinal sliding of the sliding frame 4 is as shown in FIG. At this time, the lever members 80 and 80 are rotated backward, and the release plates 81 and 81 are positioned below. In this state, since the hook member and the interlocking link are hooked to each other, the rail frame 8 is moved in conjunction with the movement of the sliding frame 4 and the interlocking link 10.
Next, when the gatch state shown in FIG. 1 is set, either the left or right lever member 80 is rotated forward. At this time, the release plates 81 and 81 are rotated upward, the connecting rod 59 is fitted in the hook grooves 81a and 81a, and the hook member 57 is rotated upward. Thereby, the latching state of the interlocking link 10 and the hook member 57 is released. Further, in this released state, the ball plungers 79 and 79 screwed into the regulation plates 78 and 78 are fitted into the holes 75b and 75b of the plates 75 and 75 and are held in this state, as shown in FIG. Held in the state shown.
In this state, since the interlocking state of the interlocking link 10 and the hook member 57 is released, the rail frame 8 is held by the release plates 81, 81 regardless of the back-and-forth movement of the sliding frame 4, and the leg support bottom 9. Is constrained in a state of being positioned in the upper front direction. Therefore, the leg receiving bottom 9 is in a stopped state regardless of the up-and-down movement of the back receiving bottom 6 and the vertical swing of the waist receiving bottom 7.

The bed 1 configured as described above can be used in a state in which the interlocking operation of the leg support bottom 9 is released by the switching means 74 when treating on the bed 1, and can be generally lifted up. Can be used in the same way as a large bed. Further, when leaving the bed 1, if the interlocking link 10 and the hook member 57 are hooked by the switching means 74 so that the leg receiving bottom 9 operates in an interlocking manner, the leg receiving bottom 9 becomes the waist receiving bottom 7. The posture can be changed to a chair-like state.
Therefore, the bed is very suitable for medical treatment and getting out of bed.

Further, as described in the first embodiment, when the mountain cams 36, 36 fixed to the sliding frame 4 are configured to be able to extend forward, the waist support bottom 7 in the gatch state shown in FIG. It is also possible to make the bed 1 rotate upward, and it is possible to make the bed 1 easier to treat.
In this embodiment, cam members that are slidable back and forth along the mountain-shaped cams 36 and 36 fixed to the sliding frame 4 are connected to each other, and a lever for moving back and forth is also fixed.
Alternatively, the rollers 70, 70 supported on the waist support bottom 7 can be changed to positions close to the holes 69 a, 69 a serving as the base end of the rotation of the waist support bottom 7, and the timing of starting to swing is set. The rollers 70, 70 may be configured to roll on the upper horizontal portion of the angle cams 36, 36 even when the delay and the back raising are completed.

As described above, in the bed 1 according to the second embodiment, when the treatment is performed on the bed 1, the bed 1 can be in a gait state and can be used as a general bed that can be raised.
And when leaving the floor, the footrest bottom 9 can be accommodated by appropriately operating the switching means 74, so that the posture can be changed to a chair-mounted state without flipping the body 90 degrees on the bed, and it is easy to get up It has become.

Explanatory drawing which shows the operating state of the bed which concerns on this invention Explanatory drawing showing the configuration of the base frame and sliding frame Explanatory drawing showing the configuration of the base frame, sliding frame and back support bottom Explanatory drawing showing the mounting state of the rail frame Explanatory drawing showing the mounting state of the foot support bottom Explanatory drawing showing the mounting state of the waist support bottom Whole perspective view showing the whole bed (excluding mattress) Interlocking link explanatory diagram (a) Front view showing attached state (b) Side view showing action Side sectional view showing a flat floor Side cross-sectional view showing a back-up state 1 Side cross-sectional view showing the raised state 2 Side sectional view showing a chair-like state Partial cross-sectional explanatory diagram showing the switching mechanism Explanatory diagram showing the action of the switching mechanism (a) Interlock release state (b) Interlock state Whole side sectional view showing the Gatch state when the switching mechanism acts Explanatory drawing 1 showing a conventional bed Explanatory drawing showing a conventional bed 2

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bed 2 Base frame 3 Drive means 4 Sliding frame 5 Back raising link 6 Back receiving bottom 7 Waist receiving bottom 8 Rail frame 9 Leg receiving bottom 10 Interlocking link 36 Mountain cam 57 Hook member 72 Head side mattress 73 Leg side Mattress 74 switching means

Claims (5)

  The floor of the bed is divided into at least a back support bottom, a waist support bottom, and a leg support bottom, and the back support bottom is pivotally attached to the base frame and a slide provided on the base frame. A back frame is supported by a slide frame that slides back and forth along the cylinder so as to rise from the horizontal state to the upper rear part. The leg support bottom is pivoted on a rail frame that is movable rearward and downward relative to the base frame, and the rail frame is a hook member. The interlocking link that is supported by the sliding frame via the sliding frame is further configured to amplify and rotate by the rotation of the back support bottom. The head frame mattress and the leg placed on the back support bottom and the waist support bottom are configured such that the rail frame is retracted rearward and downward in conjunction with the movement to be stored in the rear lower direction of the waist support bottom. A chair-like state in which the sliding frame is moved backward by a driving means provided between the base frame and the sliding frame from a state in which the leg mattress placed on the receiving bottom forms substantially the same plane. The bed is characterized in that the posture can be changed.   A hook member that can be hooked to the interlocking link is pivotally attached to the rail frame, and the hook member is hooked to the interlocking link, and the hooked state is released and the rail frame is held. The bed capable of changing its posture to a chair-like state according to claim 1, further comprising switching means that can be appropriately operated.   The back support bottom is configured to be raised so that the back bottom rises upward, and the back support bottom includes a back support bottom configured to form a space in which a central lower portion is recessed from a plane formed by the back support bottom. A bed whose posture can be changed to a chair-like state according to claim 1 or 2.   2. The head-side mattress provided on the back support bottom and the waist support bottom, and the opposing surfaces of the leg-side mattress provided on the leg support bottom are configured to be inclined downwardly to the rear. A bed whose posture can be changed to a chair-like state according to claim 3. The rail frame moves forward and upward in conjunction with the forward movement of the sliding frame, and the footrest bottom supported by the rail frame is placed at a position higher than the backrest bottom and the waistrest bottom, thereby 5. The chair-like state according to claim 1, wherein the leg-side mattress provided on the leg support bottom is thinner than the head-side mattress provided on the waist support bottom. A bed with a changeable posture.

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