JP2010227393A - Bed device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bed device reclinable with simple operation and enabling a user to take a relaxed posture. <P>SOLUTION: The bed device includes a main frame 10; a foot frame 11 pivotally connected to one end of the main frame 10; a floor part 20 supported on the main frame 10 and the foot frame 11 and formed by pivotally connecting a back bottom 21, a hip bottom 22, a knee bottom 23 and a foot bottom 24; an interlocking bar 30 moving with one end supported abutting on the lower face of the foot frame 11; a guide part 40 provided at the lower part of the main frame 10 to guide the interlocking bar 30 to move on a straight line; and a main actuator 50 changing the inclination angle of the back bottom 21 and moving the interlocking bar 30. The inclination angle of the foot frame 11 changes according to the position of the interlocking bar 30 abutting on the foot frame 11. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a reclining bed apparatus.

  In a bed apparatus capable of a reclining operation for raising a conventional back floor, there is a bed apparatus that can take a sitting position on a chair in order to eliminate pressure on the user's abdomen when the back floor is raised. . This is because the support frame is provided with a floor, the back floor constituting the floor is configured to be able to undulate around the horizontal axis on the rear side, and the leg floor is provided at the rear end of the knee floor constituting the floor. The front end is pivotally connected, the knee floor is configured to be raised and lowered around the horizontal axis on the front side, and the position of the support that supports the leg floor on the rear end side of the support frame is changed in the front-rear direction One end of a frame body to which a support body for supporting a leg floor in a horizontal posture is attached is pivotally connected to the knee floor, and when swinging to the standing side of the knee floor, It has a structure in which the leg floor in a rearwardly inclined posture is supported only by a support (see, for example, Patent Document 1).

  Further, as a conventional technique that makes it possible to adjust the inclination angles of the back floor and the leg floor, there is a reclining chair that can be converted into a chair or a bed and an inclined bed. This is rotatably connected to a seat frame, a back frame that is rotatably connected to a first rotating shaft on one end side of the seat frame, and a second rotating shaft on the other end side of the seat frame. A leg seat frame and a support frame that rotatably supports the first pivot shaft, wherein the first linear motion shaft is coupled to the backrest frame, and the second linear motion shaft is coupled to the leg seat frame. By driving the first and second electric actuators, the reclining chair can be displaced between a chair state, a bed state, and an inclined bed state (see, for example, Patent Document 2).

JP 2005-6729 A JP 2006-326172 A

  However, in the structure disclosed in Patent Document 1, the leg floor is in a downwardly inclined posture when swinging to the standing side of the knee floor, and can take a sitting position in a chair. As a result, the position of the portion that is pivotally connected (corresponding to the position of the user's knee) becomes high. If the knees are raised in this way, it is difficult to say that the pressure on the user's abdomen is sufficiently eliminated because the posture of sitting on the chair cannot be taken sufficiently. In addition, when switching to a relaxed state in which a posture can be taken while sitting on a chair, the frame body (i.e., an auxiliary support for supporting the leg floor is attached by lifting the leg floor to the upright side). It is necessary to perform the operation after the rear frame) is moved forward, and the operation is complicated.

  On the other hand, in the reclining chair disclosed in Patent Document 2, since the tip of the leg seat frame is lowered by driving the second electric actuator, it is possible to take a sitting posture sufficiently on the chair. However, since the knee cannot be raised, the function is not sufficient when used as a bed state. Furthermore, in the reclining chair disclosed in Patent Document 2, the backrest frame and the leg seat frame are individually driven by the first and second electric actuators. Therefore, the 1st and 2nd electric actuator provided with sufficient capability to endure the load of a backrest frame and a leg seat frame is calculated | required, and a cost will be high. When two actuators are used, it is necessary to individually control the first and second electric actuators in order to adjust the backrest and legs. Therefore, when the user individually controls, the operation becomes complicated.

  This invention is made | formed in view of said problem, and makes it a subject to provide the bed apparatus which can recline by simple operation and a user can take a relaxing posture.

  The first means taken to solve the above problem is supported on the main frame, the foot frame pivotally connected to one end of the main frame, the main frame and the foot frame, A floor formed by pivotally connecting a back bottom, a buttock bottom, a knee bottom, and a foot bottom; an interlocking bar that moves while abutting and supporting one end on the lower surface of the foot frame; and the main frame A guide portion that guides the interlocking bar to move on a straight line, and a main actuator that changes the inclination angle of the back bottom and moves the interlocking bar. The inclination angle of the foot frame changes according to the position where it abuts on the foot frame.

  Further, the second problem solving means is that the floor portion is slidably supported on the main frame and the foot frame, and is slid on the main frame and the foot frame by the operation of the main actuator. The interlocking bar moves through the moving floor.

  The third problem-solving means includes a pull-in bar pivotally connected to the back bottom and the main frame at both ends, and a lower end of the back bottom at one end to support the back bottom slidably. A back lever connected to the main actuator at the other end and pivotally connected to the main frame to rotate relative to the main frame, and the back lever is rotated by the operation of the main actuator. The inclination angle of the back bottom supported by the back lever changes, and the buttocks bottom, the knee bottom, and the foot bottom pivotally connected to the back bottom move on the main frame. To slide.

  The fourth problem-solving means comprises one end abutting on a lower portion of the knee bottom and slidably supporting the knee bottom, and the other end pivotally connected to the main frame. It is provided with an above-knee lever that is rotated relative to each other and held at a predetermined angle.

  Further, the fifth problem solving means is provided with an above-knee actuator connected and fixed to an end portion of the above-knee lever pivotally connected to the main frame.

  According to the present invention, the main actuator changes the inclination angle of the back bottom and moves the interlocking bar, and the interlocking bar is guided by the guide part and is linearly supported while supporting one end against the lower surface of the foot frame. Move up. The inclination angle of the foot frame changes according to the position where the interlocking bar comes into contact with the foot frame. Therefore, since the inclination angle of the back bottom and the foot frame can be adjusted with one actuator, an inexpensive bed apparatus can be provided. In addition, reclining can be performed with a simple operation and the user can take a relaxed posture.

  In addition, the floor part slides on the main frame and foot frame by the operation of the main actuator, and the interlocking bar moves through the sliding floor part. Therefore, the main actuator and the interlocking bar are interlocked with a simple structure. be able to.

  In addition, by operating the main actuator, the hip bottom, knee bottom, and foot bottom can be slid in conjunction with raising the inclination angle of the back bottom to the upright side. Can effectively prevent pressure on the abdomen when waking up. Further, the main actuator, the back bottom and the interlocking bar can be interlocked with a simple structure.

  In addition, when the floor slides on the main frame and the foot frame while the upper knee lever that contacts the lower part of the knee bottom is held at a predetermined angle, the fulcrum of the knee bottom moves along with the sliding. Therefore, the inclination angle of the knee bottom can be changed.

  In addition, since the knee bottom can be adjusted to an arbitrary angle by the above-knee actuator, a relaxed posture can be taken according to the user's preference. Further, since the above-knee actuator only needs to support the knee bottom, it is not necessary to use a stronger actuator than the actuator for supporting the back bottom or the foot frame, so that an inexpensive bed apparatus can be provided.

It is explanatory drawing of the bed apparatus which concerns on a 1st Example. It is explanatory drawing of the state which raised the above-knee lever of the bed apparatus which concerns on a 1st Example. It is explanatory drawing of the state which raised the upper knee lever and back part bottom of the bed apparatus concerning a 1st Example. It is explanatory drawing of the bed apparatus which concerns on a 2nd Example.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(First Example)
FIG. 1 is an explanatory diagram of a bed apparatus 1 according to the first embodiment.

  The bed apparatus 1 according to the first embodiment is supported on a main frame 10, a foot frame 11 pivotally connected to one end of the main frame 10, the main frame 10 and the foot frame 11, and a back bottom 21. A floor 20 formed by pivotally connecting the buttock bottom 22, the knee bottom 23, and the foot bottom 24, an interlocking bar 30 that moves while abutting and supporting one end on the lower surface of the foot frame 11, A guide part 40 provided at the lower part of the main frame 10 for guiding the interlocking bar 30 to move on a straight line, and a main actuator 50 for changing the inclination angle of the back bottom 21 and moving the interlocking bar 30 are provided. The inclination angle of the foot frame 11 changes in accordance with the position where the interlocking bar 30 contacts the foot frame 11.

  The main frame 10 is a portion that supports each member of the bed apparatus 1, and is installed on the floor surface F via leg portions 13 disposed in the lower part. A foot frame 11 is pivotally connected to the foot side (right side in the figure) of the main frame 10, and a headboard 12 is fixed to the head side (left side in the figure). Further, a stopper 14 for restricting the inclination angle of the foot frame 11 is extended on the lower foot side of the main frame 10. The tip of the stopper 14 is inclined so as to support the entire surface when the lower surface of the foot frame 11 abuts.

  One end of the foot frame 11 is a connecting portion 11a that is pivotally connected to the main frame 10, and rotates about the connecting portion 11a. Further, on the upper side of the other end of the foot frame 11, a rolling element 11b such as a roller is disposed so that the foot bottom 24 of the floor portion 20 disposed on the upper portion of the foot frame 11 slides smoothly. Has been. The foot frame 11 is formed such that the surface on the upper foot side (side on which the rolling element 11b is disposed) is lower than the surface on the upper head side, and the upper end of the rolling body 11b and the upper head side of the foot frame 11 are formed. It is comprised so that it may become the same height as the surface. Further, the foot frame 11 forms an inclined surface 11c that is inclined upward as the lower surface approaches the head side (the connecting portion 11a side), and the tip of the interlocking bar 30 moves along the inclined surface 11c. Has been.

  The floor 20 is supported on the main frame 10 and the foot frame 11 so as to be slidable in the foot direction from the head. Further, the back bottom 21, the buttock bottom 22, the knee bottom 23, and the foot bottom 24 are pivotally connected in order from the head side, and connecting portions 20a, 20b, and 20c are disposed therebetween. Yes. A fixing portion 22 a that fixes the distal end of the interlocking bar 30 on the head side is disposed below the collar bottom 22. In addition, a locking portion 25 that prevents the mat (not shown) placed on the floor portion 20 from falling off is disposed at the tip of the foot bottom 24.

  The interlocking bar 30 is a rod-like member, and one end is fixed to a fixing portion 22a provided at the lower portion of the buttock bottom 22, and the other end is along the inclined surface 11c while supporting and supporting the lower portion of the foot frame 11. A rolling element 30a such as a roller is disposed so as to move smoothly.

  The guide part 40 is formed in a through-hole shape so that the lower part of the main frame 10 passes through the central part in the length direction of the interlocking bar 30. In addition, the guide part 40 should just be the form which supports the lower part of the interlocking bar 30 so that the interlocking bar 30 may be prevented from falling due to gravity. Therefore, the interlocking bar 30 is configured to move on a straight line in the length direction (from the head to the foot) by being restricted by the fixing portion 22a and the guide portion 40 of the buttock bottom 22 that slide on the main frame 10. Yes.

  One end of the main actuator 50 is fixed to the lower portion of the main frame 10, and the other end is provided with an expansion / contraction part 50a that expands and contracts by a control signal from a controller (not shown). As the main actuator 50, for example, a hydraulic cylinder or an electric actuator provided with a mechanism for converting rotation of an electric motor into linear motion can be used.

  A bent back lever 51 bent at a predetermined angle is pivotally attached to the distal end of the main actuator 50 on the side of the expansion / contraction part 50a. The back lever 51 is pivotally attached to the side surface of the main frame 10 at the bent portion 51 a, and rotates about the bent portion 51 a by the expansion and contraction operation of the main actuator 50. In addition, a rolling element 51b such as a roller is disposed at the top end of the back lever 51 so as to contact the lower portion of the back bottom 21 and support the back bottom 21 so that the back bottom 21 can slide smoothly. Yes. The back lever 51 is in contact with the lower part of the back bottom 21 at one end to slidably support the back bottom 21 and is connected to the main actuator 50 at the other end and pivotally connected to the main frame 10. It is configured to rotate relative to the main frame 10.

  A pull-in bar 60 is pivotally connected to both sides of the back bottom 21 and the main frame 10 at both ends. The position where the pull-in bar 60 is pivotally connected is configured such that the main frame 10 is located on the head side from the back bottom 21.

  An upper knee lever 70 is disposed at the foot side end of the main frame 10. One end of the above-knee lever 70 is a connecting portion 70a pivotally connected to the main frame 10, and is configured so that the above-knee lever 70 rotates relative to the main frame 10 and is held at a predetermined angle. Yes. Further, the other end of the above-knee lever 70 is provided with a rolling element 70b such as a roller so as to contact the lower part of the knee bottom 23 and support the knee bottom 23 so as to be able to slide smoothly.

  The rotation mechanism of the above-knee lever 70 may be configured to be manually rotated and fixed at a predetermined angle. For example, a hydraulic cylinder or an electric actuator having a mechanism for converting the rotation of the electric motor into a linear motion may be used. It may be configured to be driven.

  Next, operation | movement of the bed apparatus 1 which concerns on a 1st Example is demonstrated in detail using FIG.1, FIG.2 and FIG.3.

  In the initial state, as shown in FIG. 1, the floor portion 20 connecting the back bottom 21, the buttock bottom 22, the knee bottom 23, and the foot bottom 24 is planar. The telescopic portion 50 a of the main actuator 50 is in the most contracted state, and the side of the back lever 51 having the rolling elements 51 b is parallel to the main frame 1.

  FIG. 2 is an explanatory view showing a state in which the above-knee lever 70 is raised.

  When the above-knee lever 70 is rotated to raise the rolling element 70b, the lower surface of the knee bottom 23 that contacts the rolling element 70b of the above-knee lever 70 is lifted. At this time, the knee bottom 23 and the foot bottom 24 are lifted into a mountain shape with the connecting portion 20c as a vertex, with the connecting portion 20b, the rolling element 70b, and the rolling element 11b of the foot frame 11 as fulcrums. In addition, since the vertical movement of the interlocking bar 30 connected via the fixing part 22a of the collar bottom 22 is restricted by the guide part 40, the collar bottom 22 does not move.

  FIG. 3 is an explanatory diagram of a state where the back bottom 21 is further raised from the state where the above-knee lever 70 of FIG. 2 is raised.

  When the telescopic portion 50a of the main actuator 50 is driven to extend and contract, the end of the back lever 51 on the side pivotally attached to the main actuator is pushed. Along with this, the back raising lever 51 having a shape bent at a predetermined angle rotates in the clockwise direction in the drawing with the bent portion 51a as an axis. And the side which has the rolling element 51b of the back lever 51 is lifted. The abutting rolling element 51b pushes up the lower surface of the back bottom 21 and is adjusted to a desired inclination angle. At this time, the floor portion 20 is restricted from sliding in the foot direction (right side in the figure) by the pull-in bar 60 pivotally connected to the back bottom 21 and the main frame 10 at both ends. As the head side of the back bottom 21 rises with the rolling element 51b of the back lever 51b as a fulcrum 20a, the back bottom 21 is retracted while the pull-in bar 60 is inclined and the floor 20 is slid in the head direction (the left side in the figure). Let

  As the floor portion 20 slides, the interlocking bar 30 connected to the fixing portion 22a of the buttock bottom 22 is also guided by the guide portion 40 and pulled in the head direction. As the interlocking bar 30 moves in the head direction of the rolling element 30a, the position of the inclined surface 11c of the foot frame 11 that is abutted and supported by the rolling element 30a also changes, and the connecting portion 11a of the foot frame 11 and The foot side of the foot frame 11 is lowered with the point where the rolling element 30a comes into contact as a fulcrum. In the state where the foot side of the foot frame 11 is lowered to the maximum extent, it is supported by the tip of the stopper 14 as shown in FIG. Further, the mating portion (not shown) placed on the floor portion 20 is prevented from slipping off by the locking portion 25 provided at the tip of the foot bottom 24.

  On the other hand, as the floor portion 20 is slid while the angle of the above-knee lever 70 is fixed, the position of the lower surface of the knee bottom 23 supported by the rolling element 70b of the above-knee lever 70 also moves. And the distance of the connection part 20b used as the fulcrum of the knee part bottom 23 and the rolling element 70b becomes long, and the position of the connection part 20c becomes low. Further, the knee bottom 23 and the foot bottom 24 which are lifted with the connecting portion 20b, the rolling element 70b and the rolling element 11b of the foot frame 11 as a fulcrum and lifted in a mountain shape with the connecting portion 20c as the apex, The side is lowered.

  In addition, about the operation | movement at the time of lowering the back part bottom 21, since it is reverse to the operation | movement at the time of raising, description is abbreviate | omitted.

  As described above, in the bed apparatus according to the first embodiment, the main actuator 50 changes the inclination angle of the back bottom 21 and moves the interlocking bar 30, and the interlocking bar 30 is guided by the guide part 40. It moves on a straight line while abutting and supporting one end on the lower surface of the foot frame 11. Then, the inclination angle of the foot frame 11 changes according to the position where the interlocking bar 30 contacts the foot frame 11. Therefore, since the inclination angle of the back bottom 21 and the foot frame 11 can be adjusted with one actuator, an inexpensive bed apparatus can be provided. In addition, reclining can be performed with a simple operation and the user can take a relaxed posture.

  Further, since the floor 20 slides on the main frame 10 and the foot frame 11 by the operation of the main actuator 10, and the interlocking bar 30 moves through the sliding floor 20, the main actuator has a simple structure. 10 and the interlocking bar 30 can be interlocked.

  Further, the main actuator 10 is operated to slide so that the buttock bottom 22, the knee bottom 23, and the foot bottom 24 are pulled in conjunction with raising the inclination angle of the back bottom 21 to the upright side. It is possible to effectively prevent pressure on the abdomen when the user wakes up. Further, the main actuator 50, the back bottom 21 and the interlocking bar 30 can be interlocked with a simple structure.

  Further, when the floor 20 slides on the main frame 10 and the foot frame 11 with the above-knee lever 70 in contact with the lower part of the knee bottom 23 held at a predetermined angle, the knee bottom moves along with the sliding. Since the fulcrum 23 moves, the inclination angle of the knee bottom 23 can be changed.

  As described above, in the bed apparatus according to the first embodiment, the position of the knee and the foot is lowered as the backrest is raised, so that the position of the backrest, the knee and the foot is so as to eliminate the pressure on the abdomen of the user. In conjunction with this, the user can take a natural posture close to that of sitting on a chair.

(Second embodiment)
A second embodiment will be described with reference to FIG. The second embodiment relates to a bed apparatus 100 provided with an above-knee actuator 80 as a rotation mechanism of the above-knee lever 81. The bed apparatus 100 of the second embodiment is also provided with a main actuator 50 and a back lever 51 as in the first embodiment, but illustration thereof is omitted. In addition, about the member of the structure which is common in 1st Example, description is abbreviate | omitted using the same number.

  FIG. 4 is an explanatory diagram of the bed apparatus 100 according to the second embodiment.

  The above-knee actuator 80 is configured such that one end is fixed to the lower part of the main frame 10 and the other end includes an expansion / contraction part 80a that expands and contracts by a control signal from a controller (not shown). As the above-knee actuator 80, for example, a hydraulic cylinder or an electric actuator provided with a mechanism for converting the rotation of an electric motor into a linear motion can be used.

  A bendable above-knee lever 81 bent at a predetermined angle is pivotally attached to the distal end of the above-knee actuator 80 on the side of the stretchable portion 80a. The above-knee lever 81 is pivotally attached to the side surface of the main frame 10 at the bent portion 81a, and rotates about the bent portion 81a by the expansion / contraction operation of the above-knee actuator 80. Further, a rolling element 81b such as a roller is disposed at the head-side tip of the above-knee lever 81 so as to contact the lower part of the knee bottom 23 and support the knee bottom 23 so as to be able to slide smoothly. Has been. The upper knee lever 81 is in contact with the lower part of the knee bottom 23 at one end to slidably support the knee bottom 23, and is connected to the above knee actuator 80 at the other end and pivotally supported on the main frame 10. The main frame 10 is connected and rotated relative to the main frame 10.

  As described above, since the bed apparatus according to the second embodiment includes the above-knee actuator 80 as the rotation mechanism of the above-knee lever 81, the knee bottom can be adjusted to an arbitrary angle by the above-knee actuator, and the user can easily perform the operation. You can take a relaxed posture to your liking. Further, since the above-knee actuator 80 only needs to support the knee bottom 23, it is not necessary to use a stronger actuator than the actuator for supporting the back bottom 21 or the foot frame 11. Can be provided.

  The present invention is not limited to the contents shown in the drawings and the contents described in the present specification, and various modifications can be made without departing from the scope of the invention.

  In the present embodiment, the main actuator 50 is disposed on the foot side with respect to the back lever 51 with the fixed end of the main actuator 50 on the foot side and the telescopic portion 50a on the head side. On the other hand, as another configuration, even if the fixed end of the main actuator is on the head side and the telescopic part is on the foot side, the same function and effect can be obtained even if it is disposed on the foot side from the back lever.

  Further, in this embodiment, the main actuator 50 and the back lever 51 are configured to be outside the main frame 10 (front side in the figure), but the position of the bed apparatus in the width direction is limited to this. Is not to be done. Similarly, the position in the width direction of the bed apparatus is not limited to the position shown in FIGS. 1 to 4 for the fixing portion 22a, the interlocking bar 30, the guide portion 40, and the above-knee lever 70 disposed on the buttock bottom 22. Absent.

  In this embodiment, the lower surface of the foot frame 11 is abutted and supported by the rolling element 30a provided at the tip of the interlocking bar 30, but a pair of interlocking bars are provided on both sides in the width direction of the bed apparatus. And you may make it the structure which abuts and supports the lower surface of a foot | leg part frame in two places. In particular, if a round bar-like rolling element is installed between the pair of interlocking bars, the lower surface of the foot frame can be stably supported.

  Further, the bed apparatus of the present embodiment may be provided with a tilt mechanism and the main frame may be tilted.

1,100 bed apparatus 10 main frame 11 foot frame 20 floor 21 back bottom 22 buttocks bottom 23 knee bottom 24 foot bottom 30 interlocking bar 40 guide 50 main actuator 51 back lever 60 pull-in bar 70, 81 above knee Lever 80 above knee actuator

Claims (5)

The mainframe,
A foot frame pivotally connected to one end of the main frame;
Supported on the main frame and the foot frame, and a floor formed by pivotally connecting a back bottom, a buttock bottom, a knee bottom, and a foot bottom;
An interlocking bar that moves while abutting and supporting one end on the lower surface of the foot frame;
A guide portion that is provided at a lower portion of the main frame and guides the interlocking bar to move on a straight line;
A main actuator that moves the interlocking bar while changing the inclination angle of the back bottom, and
A bed apparatus configured such that an inclination angle of the foot frame changes according to a position where the interlocking bar comes into contact with the foot frame. The floor portion is slidably supported on the main frame and the foot frame, and the interlocking is performed via the floor portion that slides on the main frame and the foot frame by the operation of the main actuator. The bed apparatus according to claim 1, wherein the bar moves. A pull-in bar pivotally connected to the back bottom and the main frame at both ends;
One end abuts the lower part of the back bottom and slidably supports the back bottom, and the other end is connected to the main actuator and pivotally connected to the main frame to rotate relative to the main frame. A back lever, and
The back lever is rotated by the operation of the main actuator, the inclination angle of the back bottom supported by the back lever is changed, and the hip bottom and the knee portion pivotally connected to the back bottom The bed apparatus according to claim 2, wherein a bottom and the foot bottom slide on the main frame. One end abuts the lower part of the knee bottom and supports the knee bottom slidably, and the other end is pivotally connected to the main frame to rotate relative to the main frame and hold it at a predetermined angle. The bed apparatus according to claim 3, further comprising an above-knee lever. The bed apparatus according to claim 4, further comprising an upper knee actuator connected and fixed to an end portion of the upper knee lever that is pivotally connected to the main frame.

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