JP6114094B2 - Bed equipment - Google Patents

Description

  The present invention relates to a bed apparatus, and more particularly, to a bed apparatus having a link type lifting mechanism that lifts and lowers an upper frame.

  2. Description of the Related Art In recent years, in hospital beds, home care beds, and the like, bed apparatuses having a lifting mechanism that lifts and lowers the bed are known. As an elevating mechanism, a parallel link type elevating mechanism using a parallel link mechanism and an X link type elevating mechanism using an X-shaped link mechanism are often used.

  In a bed apparatus having an X-link type lifting mechanism, for example, as a conventional technique, a bed is made up of a base part (cart unit), a drive part (punter unit), a head side unit, a foot side unit, a bottom unit, and a board unit. A unit divided into a plurality of units has been proposed (see Patent Document 1). According to such a structure, the workability | operativity at the time of carrying and an assembly of a bed apparatus can be aimed at.

  However, as described above, in the conventional bed having the X-link type lifting mechanism, the drive unit is a combination of the lifting frame, the X-link mechanism, and the linear motion actuator that is the driving means, and thus the weight is heavy. . When assembling the bed, it is necessary to lift and position such a heavy member on the pedestal, which leads to an increase in the physical burden on the worker and an increase in the number of assembly workers (cannot be assembled by one person). There was a possibility.

  Therefore, as a countermeasure against the above problem, for example, in a bed apparatus having a configuration in which an X link mechanism having a linear motion actuator is provided between a base frame and a lifting frame, the first link and the second link constituting the X link mechanism are provided. A guide member that is connected and configured to be rotatable at the connecting portion and guides a moving member provided at the other end of the first link and the second link is provided in the lift frame, and the guide member provided in the lift frame In addition to forming an introduction portion into which the moving member can be introduced on the lower side outside the moving stroke of the moving member of the first link after assembly, the end portion of the second link and the lifting frame can be attached and detached. A structure is disclosed in which the lifting frame and the assembly of the other elements are configured as separate units (see Patent Document 2).

  According to such a configuration, when the moving member of the first link is introduced into the guide member provided in the lifting frame, the load of the lifting frame is reduced to the base when the upper wall surface of the introducing portion is made to correspond to the moving member. Since it can be supported by the frame, when assembling the bed, the workability can be improved and the labor burden can be reduced.

JP 2006-340964 A JP 2009-207643 A

  However, in the above-described configuration of the prior art, in the X link lifting mechanism in which the lifting frame is configured to be movable up and down, the frame structure is employed in the configuration of the X link mechanism because the lifting frame is held by the X link mechanism. With such a configuration, the weight of the operating part including the lifting frame becomes heavy, and there is a concern that the capacity of the actuator may be required to be compatible with a high load.

  Therefore, in the configuration of the prior art, even if the bed apparatus is configured in a divided structure for each unit, since the weight is heavy and the unit itself is large, there is room for improvement in transportation, disassembly and assembly. In particular, for home beds and nursing beds, there is a demand for a bed device that is light and compact and can be easily transported and disassembled.

  The present invention has been made in view of the above-described conventional problems, and in the bed apparatus, the bed can be divided into light and compact, facilitates transportation and disassembly, and improves workability and maintainability. An object is to provide an apparatus.

  The bed apparatus according to the present invention for solving the above-described problems is as follows.

The present invention provides a bed apparatus having an upper frame and a link type lifting mechanism for lifting and lowering the upper frame, wherein the link type lifting mechanism is disposed on the head side and the foot side of the upper frame, respectively, and the head side between the linked lift mechanism and said foot side of the linked lift mechanism, divisible said linked lift mechanism with each other, and is provided with a connecting frame for integrally connecting said linked lift mechanism, the a driving means for driving the linked lift mechanism (linear actuator), the operation control of by the head side of the linked lift mechanism the driving means and the foot end of the linked lift mechanism, and can control with coordinated It is comprised so that it may become.

Further, the present invention provides the link type lifting mechanism between a base (for example, a “lower frame” in the case of a frame) and an elevator (for example, an “upper frame” in the case of a frame). An X-shaped link mechanism in which a first link and a second link acting on the lifting part are connected to each other so as to be rotatable at their intermediate positions. And the other end side is movably connected along the base portion, and the second link is configured so that one end side is rotatably connected to the base portion and the other end side. the linked movably along the lifting part, between the base and the elevating unit, and a third link which acts on the link mechanism, as a configuration wherein the third link, the one end side base Alternatively, it is rotatably connected to the elevating part and the other end is forward Provided so as to be able to come into contact with and separate from the first link or the second link, and the driving means biases the other end side in contact with the first link or the second link only in the direction in which the elevating part is raised. Such a configuration is preferable.

In the present invention, the connection frame and the floor surface (floor surface on which the bed is installed) in a state where the link frame lift mechanism on the head side and the link lift mechanism on the foot side are connected to the connection frame. It is preferable that a space be provided between the two.
In the present invention, the space between the connection frame and the floor surface forms the link-type lifting mechanism on the head side and the link-type lifting mechanism on the foot side.

  In the present invention, it is preferable that the connecting frame is configured to be narrower than the link-type lifting mechanism on the head side and the link-type lifting mechanism on the foot side in the width direction with respect to the longitudinal direction of the upper frame.

  In the present invention, it is preferable that the connecting frame is disposed at a substantially central portion in the bed width direction between the head side link type lifting mechanism and the foot side link type lifting mechanism.

  Further, according to the present invention, as the structure of the connecting frame, the head side link type lifting mechanism and the foot side are connected to both ends connected to the head side link type lifting mechanism or the foot side link type lifting mechanism. A positioning part for positioning the link type lifting mechanism and a mounting part for fixing to the link type lifting mechanism on the head side or the link type lifting mechanism on the foot side, the link type on the head side As a configuration of the lifting mechanism and the link-type lifting mechanism on the foot side, it is preferable to include a positioning portion for positioning the connecting frame and a mounting portion for fixing the connecting frame.

According to the bed apparatus of the present invention, in the bed apparatus provided with an upper frame and a link type lifting mechanism for lifting and lowering the upper frame, the link type lifting mechanism is disposed on the lower side of the head side and the foot side of the upper frame, respectively. Thus, the load applied to the link type lifting mechanism (the load applied to the upper frame, the weight of the upper frame itself, and the weight of other components applied to the link type lifting mechanism) is divided and received on the head side and the foot side. Therefore, the structure of the link type lifting mechanism on each of the head side and the foot side can be made lightweight and compact in accordance with the divided load resistance. Thereby, conveyance and disassembly / assembly can be facilitated, and a bed apparatus excellent in workability and maintainability can be realized. Further, a link frame is provided between the head-side link type lifting mechanism and the foot-side link type lifting mechanism so that the link type lifting mechanisms can be divided and integrally connected. By connecting the head-side link type lifting mechanism and the foot-side link type lifting mechanism with a connecting frame without providing a base frame (frame body) or the like for mounting the type lifting mechanism, The supporting lower frame can be configured easily. That is, since the lower frame can be divided into three parts by the link-type lifting mechanism on the head side, the link-type lifting mechanism on the foot side, and the connecting frame, a lightweight and compact lower frame can be realized. Further, the link type lifting mechanism includes a driving means (linear actuator) for driving the link type lifting mechanism, and the operation control by the head side link type lifting mechanism and the foot side link type lifting mechanism by the driving means. and since it is configured so as to enable control of the coordinated, so can easily be or be inclined or to lift the entire bed apparatus, it is possible to easily set the tilt angle desired by the user.
The bed apparatus configured as described above is particularly suitable for a home-use bed where a large amount of manpower is not required.

Further, according to the present invention, as the link type lifting mechanism, the first link and the second link acting on the lifting part are connected between the base part and the lifting part so as to be rotatable at respective intermediate positions. An X-shaped link mechanism is provided, and the first link is configured such that one end side is pivotally connected to the elevating part, and the other end side is movably connected along the base part, and the second link As a structure of a link, while connecting one end side to the said base part so that rotation is possible, and connecting the other end side so that a movement along the said raising / lowering part is possible, it is connected to the said link mechanism between the said base part and the said raising / lowering part. A third link that acts, and as a configuration of the third link, one end side is rotatably connected to the base part or the elevating part, and the other end side is connected to the first link or the second link. Provided so as to be able to contact and separate, Since the other end abuts on the first link or the second link and is urged only in the direction in which the elevating part is lifted, the link mechanism has a simple and compact structure without a frame structure. It is possible to reduce costs, improve assemblability and maintainability. With this configuration, the elevating unit becomes link-free during the lowering operation, and therefore it is possible to reduce the risk of property damage due to pinching caused by driving of the driving means when the elevating unit is lowered.

  Further, according to the present invention, the connecting frame is connected to the floor surface (the bed apparatus is installed) in a state where the link-type lifting mechanism on the head side and the link-type lifting mechanism on the foot side are connected. For example, when a care device is placed around the bed, an interference object is placed near the floor even if the base of the care device is placed under the bed. Since there is no, it can be installed easily.

  According to the present invention, the connecting frame is configured to be narrower than the link-type lifting mechanism on the head side and the link-type lifting mechanism on the foot side in the width direction with respect to the longitudinal direction of the upper frame. In addition, it is possible to realize a frame configuration that does not interfere with the feet under the upper frame.

  Further, according to the present invention, the connecting frame is disposed in a substantially central portion in the bed width direction between the link-type lifting mechanism on the head side and the link-type lifting mechanism on the foot side. The leg space at the end of the can be made a clean structure.

  Further, according to the present invention, as the configuration of the connecting frame, the head side link type lifting mechanism and the head side link type lifting mechanism are connected to both ends connected to the head side link type lifting mechanism or the foot side link type lifting mechanism. A positioning part for positioning the foot-side link type lifting mechanism, and a head-side link type lifting mechanism or a mounting part for fixing to the foot-side link type lifting mechanism. As a structure of the link type lifting mechanism and the foot side link type lifting mechanism, a positioning part for positioning to the connection frame and an attachment part for fixing the connection frame are provided. When assembling the link type lifting mechanism, it can be positioned easily and a mounting part is provided separately from the positioning part. By attaching and fixing the connecting frame and the link type lifting mechanism by the positioning part in a state where they are assembled without rattling, the rigidity of the connecting part between the connection frame and the link type lifting mechanism can be increased. . Thereby, the rigidity of a bed apparatus can be improved.

It is explanatory drawing which shows the whole structure of the bed apparatus which concerns on embodiment of this invention. It is explanatory drawing which shows the structure of the lower frame of the said bed apparatus. It is an enlarged view of the A section of FIG. 2 which shows the structure of the support part which supports the upper frame which comprises the said lower frame. FIG. 3 is an enlarged view of a portion B in FIG. 2 illustrating a configuration of a holding roller that holds an upper frame constituting the lower frame. It is explanatory drawing which shows the whole structure (rise state) of the link type raising / lowering mechanism which comprises the said lower frame. It is an exploded view which shows the structure of the said link type raising / lowering mechanism. It is explanatory drawing which shows the whole structure (lowering state) of the said link type raising / lowering mechanism. It is a perspective view of the descent state of the link type lifting mechanism. It is explanatory drawing which shows the connection relation of the said link type raising / lowering mechanism and a connection frame. It is explanatory drawing which shows the structure of the connection part of the said link type raising / lowering mechanism and a connection frame. It is explanatory drawing which shows the position of the positioning hole of the said link type raising / lowering mechanism. It is explanatory drawing which shows the structure of the connection frame which comprises the said lower frame. It is explanatory drawing which shows the structure of the connection part of the said connection frame. It is a side view which shows the structure of the connection part of the said connection frame. It is explanatory drawing which shows the connection state of the said link type raising / lowering mechanism and a connection frame. It is explanatory drawing which shows the structure of the raising / lowering side connection part of the said link type raising / lowering mechanism, and the connection part by the side of a connection frame. It is explanatory drawing which shows the state which raised the upper frame in parallel in the said bed apparatus. It is explanatory drawing which shows the state which inclined the head side of the said bed apparatus highly. It is explanatory drawing which shows the state which inclined the foot side of the bed apparatus high.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for implementing a bed apparatus of the present invention will be described in detail with reference to the drawings.
FIG. 1 is an example of an embodiment for carrying out the present invention, and is an explanatory diagram showing the overall configuration of a bed apparatus according to an embodiment of the present invention.

  As shown in FIG. 1, the bed apparatus 1A according to the present embodiment is a bed apparatus including an upper frame 2 and a link type lifting mechanism that lifts and lowers the upper frame 2, and includes a head side and a foot side of the upper frame 2. The link type elevating mechanisms 1H and 1F are arranged at the lower part of the upper frame 2 so as to elevate and lower the upper frame 2.

  A mattress 4 is disposed on the upper frame 2. A head board 5 and a foot board 6 are provided on the head side and the foot side of the upper frame 2, respectively.

  A connecting frame 7 that connects the link type lifting mechanisms 1H and 1F is provided between the head side link type lifting mechanism 1H and the foot side link type lifting mechanism 1F.

  In the present embodiment, the head side link type lifting mechanism 1H, the foot side link type lifting mechanism 1F, and the connecting frame 7 constitute a lower frame 1B of the bed apparatus 1A.

  The head-side link type lifting mechanism 1H and the foot-side link type lifting mechanism 1F are configured to be capable of independent or coordinated control of the lifting operation.

Here, the characteristic lower frame 1B which comprises the bed apparatus 1A of this embodiment is demonstrated in detail with reference to drawings.
FIG. 2 is an explanatory view showing the configuration of the lower frame of the bed apparatus of the present embodiment, FIG. 3 is an enlarged view of a portion A in FIG. 2 showing the configuration of the support portion that supports the upper frame constituting the lower frame, and FIG. FIG. 5 is an enlarged view of a portion B of FIG. 2 showing the configuration of the holding roller that holds the upper frame that constitutes the lower frame, and FIG. 5 shows the overall configuration (upward state) of the link type lifting mechanism that constitutes the lower frame. FIG. 6 is an exploded view showing the configuration of the link type lifting mechanism, FIG. 7 is an explanatory view showing the overall configuration (down state) of the link type lifting mechanism, and FIG. 8 is the lowered state of the link type lifting mechanism. FIG.

  As shown in FIG. 2, the lower frame 1B of the bed apparatus 1A of the present embodiment is a connecting frame that connects the link lifting mechanism 1H on the head side, the link lifting mechanism 1F on the foot side, and the link lifting mechanisms 1H and 1F. 7.

  First, the link type lifting mechanism 1H on the head side and the link type lifting mechanism 1F on the foot side will be described with reference to the drawings.

  As shown in FIG. 5, the link type lifting mechanism 1 according to the present embodiment includes a first link 31 and a second link 32 between a base portion 10 and a lifting portion 20 that are arranged at positions overlapping in the vertical direction. In a link type lifting mechanism including an X-shaped link mechanism 30 that is rotatably connected by a connecting portion 33 (hereinafter, referred to as “intermediate connecting portion 33”) at each intermediate position, the link type according to the present invention. The characteristic structure of the lifting mechanism is adopted.

  Specifically, in addition to the X-shaped link mechanism 30, a linear motion actuator (driving means) 50 that drives the third link 40 is provided between the base 10 and the elevating unit 20. It is characterized by that.

  As shown in FIG. 6, the base portion 10 is composed of a rectangular frame having a pair of long frames 101, 101 and a pair of short frames 102, 102. A reinforcing tube 103 is connected between the long frames 101 and 101 inside the frame.

  One end side 101a of the long frame 101 is provided with a connecting portion (hereinafter referred to as “second link connecting portion”) 11 to which the one end side 32a of the second link 32 is rotatably connected. A guide member 110 that slidably guides the other end 31b of the first link 31 is provided at 101b.

  As shown in FIG. 6, the elevating unit 20 is constituted by a frame body including a pair of long frames 201, 201 and a linear motion actuator 50 connected to a connecting pipe 202.

  One end side 201a of the long frame 201 is provided with a connecting portion 21 (hereinafter referred to as “first link connecting portion”) to which the one end side 31a of the first link 31 is rotatably connected. 201b is provided with a guide member 210 that slidably guides the other end 32b of the second link 32. Furthermore, the 3rd link connection part 22 with which the 3rd link 40 is rotatably connected between the long frames 201 and 201 is provided in the intermediate part vicinity.

  The first link 31 and the second link 32 are configured using square pipes having a rectangular cross section. When a metal material such as a steel material, an aluminum material, or a stainless steel material is used as the material, a structure excellent in strength can be provided.

  One end 31 a of the first link 31 is rotatably connected to the first link connecting portion 21 of the elevating unit 20, and the other end 31 b is connected to be movable along the base 10.

  As shown in FIG. 6, one end 31 a of the first link 31 is connected to the first link connecting portion 21 between the long frames 201, 201 of the elevating unit 20 so as to be rotatable (hereinafter referred to as “first”). It is referred to as “1-link connecting pipe”.) 311 is provided. On the other end side 31 b, a connecting pipe (hereinafter referred to as “first link movable connecting pipe”) provided with a guide roller 313 slidably guided by the guide member 110 between the long frames 101, 101 of the base 10. ) 312 is provided.

  One end side 32 a of the second link 32 is rotatably connected to the second link connecting portion 11 of the base portion 10, and the other end side 32 b is connected to be movable along the elevating portion 20.

  As shown in FIG. 6, one end side 32 a of the second link 32 is connected to a second link connecting portion 11 between the long frames 101 and 101 of the base portion 10 (hereinafter referred to as “second pipe”). This is referred to as a “link connecting pipe.”) 321 is provided. The other end 32b has a connecting pipe (hereinafter referred to as “second link movable connecting pipe”) provided with a guide roller 323 slidably guided by the guide member 210 between the long frames 201, 201 of the elevating unit 20. .) 322 is provided.

The first link 31 and the second link 32 are configured with the same length.
Specifically, the length from the first link connecting pipe 311 to the intermediate connecting portion 33 and the length from the second link movable connecting pipe 322 to the intermediate connecting portion 33 are formed to be equal. Moreover, the length from the 2nd link connection pipe 321 to the intermediate | middle connection part 33 and the length from the 1st link movable connection pipe 312 to the intermediate | middle connection part 33 are formed equally.
With this configuration, the elevating unit 20 can move up and down in a parallel state with respect to the base 10 by the X-shaped link mechanism 30 including the first link 31 and the second link 32.

  As shown in FIGS. 5 and 6, the third link 40 is connected to one end side 40 a so as to be rotatable to the third link connecting portion 22 between the long frames 201 and 201 of the elevating unit 20. Hereinafter, it is referred to as a “third link connecting pipe”) 43, and the drive arm 41 and the operating arm 42 are integrally provided with the third link connecting pipe 43 as one end side.

  The drive arm 41 is provided with a connecting portion 411 connected to the linear motion actuator 50 on the other end side 41b. The drive arm 41 is configured to rotate with the third link connecting portion 22 of the elevating unit 20 as a fulcrum according to the operation of the linear actuator 50.

  The operating arm 42 is provided with a rotating roller 421 that abuts against the first link 31 on the other end side 42b. Then, in conjunction with the operation of the drive arm 41, the operating arm 42 rotates the rotating roller 421 in the vertical direction with the third link connecting portion 22 of the elevating unit 20 as a fulcrum, so that the rotating roller 421 becomes the first link 31. The first link 31 is rotated with the first link connecting part 21 of the elevating part 20 as a fulcrum by pressing.

  As shown in FIG. 5, the rotating roller 421 is provided so as to be able to contact and separate from the upper surface 31 c of the first link 31. Thereby, the driving force by the linear motion actuator 50 is urged only in the direction in which the elevating unit 20 is raised by pressing the rotating roller 421 against the first link 31.

  The linear actuator 50 is an electric cylinder having a rod 51 that expands and contracts when driven by a motor. The tip 51a of the rod 51 is connected to the connecting portion 411 of the drive arm 41 of the third link 40 as shown in FIG. On the other hand, one end 52a of the main body 52 is rotatably connected to the connecting tube 202 of the elevating unit 20.

  Further, in the present embodiment, as a characteristic configuration of the link type lifting mechanism 1, the guide member 210 provided on the long frame 201 of the lifting unit 20 has a second link 32 as shown in FIG. A stopper 210a that restricts the movement of the movable connecting pipe 322 is provided.

  The stopper 210a prevents the second link movable connecting pipe 322 from coming off during the ascending operation of the elevating unit 20.

  In the present embodiment, the link type lifting mechanism 1 configured as described above has a width direction of the upper frame 2 below the head side and the foot side of the upper frame 2 as shown in FIGS. It arrange | positions so that the longitudinal direction (longitudinal direction of the long frame 201) of the raising / lowering part 20 may correspond, respectively.

  In this embodiment, in the link type lifting mechanism 1H on the head side, as shown in FIGS. 2 and 3, the upper frame 2 is engaged with a part of the upper frame 2 on the long frame 201 of the lifting unit 20. Support portions 220 that rotatably support 2 are provided at two locations.

  In the foot-side link type lifting mechanism 1F, as shown in FIGS. 2 and 4, the upper frame 2 is moved in the longitudinal direction by engaging with the long frame 201 of the lifting unit 20 and part of the upper frame 2. Holding rollers 230 are provided at two locations so as to be displaceable along.

  As described above, the support unit 220 that rotatably supports the upper frame 2 is provided on the link type lifting mechanism 1H side on the head side, and the upper frame 2 is held on the foot side link type lifting mechanism 1F side so as to be movable. By providing the roller 230, even when the position of the upper frame 2 in the longitudinal direction is changed when the operation of tilting the upper frame 2 is performed, the upper roller 2 can be stably held by the holding roller 230.

  In the present embodiment, the base 10 of each of the head-side link type lifting mechanism 1H and the foot-side link type lifting mechanism 1F is connected to the central portion of the long frame 101 as shown in FIG. The raising / lowering side connection part 170 with which is connected is provided.

Next, the connection frame 7 will be described with reference to the drawings.
FIG. 9 is an explanatory view showing the connection relationship between the link type lifting mechanism and the connecting frame of the bed apparatus of this embodiment, FIG. 10 is an explanatory view showing the structure of the connecting portion of the link type lifting mechanism and the connecting frame, and FIG. 12 is an explanatory view showing the position of the positioning hole of the link type lifting mechanism, FIG. 12 is an explanatory view showing the structure of the connecting frame constituting the lower frame of the bed apparatus, and FIG. 13 is an explanatory view showing the structure of the connecting portion of the connecting frame. FIG. 14 is a side view showing the structure of the connecting portion of the connecting frame, FIG. 15 is an explanatory view showing the connecting state of the link lifting mechanism and the connecting frame, and FIG. 16 is the lifting side connecting portion of the link lifting mechanism. It is explanatory drawing which shows the structure of the connection part by the side of a connection frame.

  As shown in FIGS. 9 and 12, the connection frame 7 of the present embodiment includes two long frames 71 and 71 arranged in parallel and frame side connection portions provided at both ends 71 a and 71 b in the longitudinal direction. 72 and 72 are comprised of a substantially rectangular frame.

  As shown in FIG. 2, the connecting frame 7 has a width in which two long frames 71, 71 are arranged side by side, the length in the width direction (bed width direction) of the upper frame 2, and the head side. The link type elevating mechanism 1H and the foot side link type elevating mechanism 1F are configured to be narrower than the length of the long frame 101, and are arranged at a substantially central portion of the long frame 101.

  The long frame 71 is configured using a square pipe having a rectangular cross section. When a metal material such as a steel material, an aluminum material, or a stainless steel material is used as the material, a structure excellent in strength can be provided.

  At both ends 71a and 71b of the long frame 71, as shown in FIG. 9, FIG. 10, and FIG. 11, a frame side connecting portion 72 for attaching to the link type lifting mechanism 1H, 1F side and an attaching portion 71c are provided. ing.

  In the link type lifting mechanisms 1H and 1F, the long frame 101 of the base 10 on the side to which the connecting frame 7 is attached is provided with a lifting side connecting part 170 that is attached and fixed to the attaching part 71c as shown in FIG. Yes. Further, as shown in FIGS. 10 and 11, the long frame 101 is provided with two fitting holes (positioning portions) 101 c for positioning the connecting frame 7 at the center portion of the lower surface thereof.

  As shown in FIGS. 12 and 13, the frame side connecting portion 72 is formed in a U shape in a plan view, and the long frames 71 and 71 are respectively formed at both ends 71 a and 71 b of the two long frames 71 and 71. They are joined together with a gap in between.

  As shown in FIG. 14, the frame-side connecting portion 72 is formed with a connecting portion 72 a extending in a substantially L shape below the long frames 71 and 71.

  As shown in FIG. 11, the connecting portion 72a is formed with a fitting portion (positioning portion) 72b for positioning with respect to the fitting hole 101c provided in the long frame 101 of the base portion 10 of the link type lifting mechanism 1H, 1F. Has been. As shown in FIGS. 13 and 14, the fitting portions 72 b are formed so as to protrude hemispherically upward by so-called dowel processing, and two fitting portions 72 b are provided side by side.

  In the present embodiment, the frame side connecting portion 72 has a substantially L-shaped press as shown in FIG. 14, as shown in FIG. By forming a bent portion 72c at the side end portion of the portion rising from the connecting portion 72a, the rigidity of the connected portion is increased.

  As shown in FIG. 9, the ascending / descending side connecting portion 170 is integrally formed at the central portion of the long frame 101 of the base portion 10. As shown in FIGS. 15 and 16, an attachment hole 170 c corresponding to the attachment portion 71 c provided in the connection frame 7 is formed in the upper part of the ascending / descending side connection portion 170.

  As for the connection between the elevating side connecting portion 170 and the frame side connecting portion 72, the link type elevating mechanisms 1H and 1F are lifted from the state shown in FIG. 9, and the connecting portion 72a of the frame side connecting portion 72 is shown in FIG. The fitting portion 72b of the base 10 and the fitting hole 101c provided in the long frame 101 of the base portion 10 are fitted together, and as shown in FIGS. 15 and 16, the mounting portion 71c provided in the connecting frame 7 is moved up and down. The mounting holes 170c of the connecting portion 170 are overlapped. And the raising / lowering side connection part 170 is fastened and fixed to the attachment part 71c of the connection frame 7 with the knob bolt (attachment bolt) 170d. In this way, as shown in FIG. 2, the link type lifting mechanisms 1H and 1F and the connecting frame 7 are connected.

  As shown in FIGS. 1 and 14, the bed apparatus 1A according to the present embodiment has the connecting frame 7 attached to the link type lifting mechanisms 1H and 1F, as shown in FIGS. A space of height H is formed between the two.

  This height H is set to a height that exceeds the height of the base (foot) of the care device when the care device is arranged around the bed. By comprising in this way, the base part (foot part) of the apparatus for care can be arrange | positioned under the long frame 71 of the connection frame 7. FIG.

  Next, the lifting operation by the link type lifting mechanisms 1H and 1F of the present embodiment will be described in detail with reference to the drawings.

  In the link type lifting mechanisms 1H and 1F, in the state where the lifting part 20 is disposed at the lowest position, the lifting part 20 approaches the base 10 as shown in FIGS. The two links 32 are inclined at a low position (the inclination angle is small).

  The linear actuator 50 is disposed between the base 10 and the elevating unit 20 with the rod 51 pulled into the main body 52 side.

  In the drive arm 41, the connecting portion 411 with the linear actuator 50 is arranged on the right side (near the other end side 31 b of the first link 31) in the drawing with respect to the third link connecting portion 22 with the elevating unit 20.

  In the operating arm 42, the rotating roller 421 is arranged on the upper surface 31 c near the other end side 31 b of the first link 31 on the right side of the third link connecting pipe 43 and the third link connecting portion 22 of the elevating part 20 in the drawing. The arm main body is disposed in a state inclined along the first link 31.

  First, when raising the raising / lowering part 20, as shown in FIG. 5, the linear actuator 50 is driven, the rod 51 is extended long, and the drive arm 41 is rotated leftward in the figure. In conjunction with the operation of the drive arm 41, the operating arm 42 rotates downward in the figure.

  As the operating arm 42 rotates downward, when the rotating roller 421 pushes down the upper surface 31c of the other end 31b of the first link 31, a force is exerted in a direction in which the third link connecting portion 22 of the elevating unit 20 is pushed up. Act. As a result, the first link 31 rotates so that the inclination angle θ1 increases while the first link movable connecting tube 312 moves to the left in the drawing with the first link connecting tube 311 on the lifting unit 20 side as a fulcrum. .

Accordingly, the second link 32 connected by the intermediate connecting portion 33 is similar to the operation of the first link 31, and the second link movable connecting tube 322 is illustrated with the second link connecting tube 321 on the base 10 side as a fulcrum. While moving in the middle left direction, it is rotated so that the inclination angle θ2 increases. Thereby, the raising / lowering part 20 is pushed up. In this case, the inclination angles θ1 and θ2 are always the same value.
In this way, the elevating part 20 can be raised in a parallel state with respect to the base part 10.

Next, when the elevating unit 20 is lowered, an operation reverse to the above-described ascending operation is performed.
That is, as shown in FIGS. 5 to 7, the linear actuator 50 is driven to shorten the rod 51, and the drive arm 41 is rotated rightward in the drawing. In conjunction with the operation of the drive arm 41, the operating arm 42 rotates upward in the figure.

  As the operating arm 42 rotates upward, the urging of the rotating roller 421 to the upper surface 31c of the other end 31b of the first link 31 is released, and the operating arm 42 moves up and down according to the amount of rotation (movement amount) of the operating arm 42. The part 20 descends due to its own weight. As a result, the first link 31 rotates so that the inclination angle θ1 becomes small while the first link movable connecting tube 312 moves rightward in the drawing with the first link connecting tube 311 as a fulcrum.

As a result, the second link 32 connected by the intermediate connecting portion 33 has the second link movable connecting pipe 322 in the right direction in the figure with the second link connecting pipe 321 as a fulcrum, similarly to the operation of the first link 31. While moving, it rotates so that the inclination angle θ2 becomes small. In this case, the inclination angles θ1 and θ2 are always the same value.
In this manner, the elevating part 20 can be lowered in a parallel state with respect to the base part 10.

Next, the characteristic lifting operation of the upper frame 2 in the bed apparatus 1A of the present embodiment will be described in detail with reference to the drawings.
FIG. 17 is an explanatory view showing a state in which the upper frame is raised in parallel in the bed apparatus of the present embodiment, FIG. 18 is an explanatory view showing a state in which the head side of the bed apparatus is highly inclined, and FIG. 19 is the bed apparatus. It is explanatory drawing which shows the state which inclined the foot side highly.

  First, when the upper frame 2 of the bed apparatus 1A is raised in parallel, the upper frame 2 is moved up by synchronizing the operations of the head-side link type lifting mechanism 1H and the foot-side link type lifting mechanism 1F. Then, the state shown in FIG. 1 is changed to the state shown in FIG.

  Thereby, the head side and foot side of the upper frame 2 can be raised parallel to the floor surface FL while being in a horizontal state.

  When the upper frame 2 of the bed apparatus 1A is lowered in parallel, the head-side link type lifting mechanism 1H and the foot-side link type lifting mechanism 1F may be operated in synchronization with each other.

  Next, when the head side of the upper frame 2 of the bed apparatus 1A is inclined high, the upper frame 2 is shown in FIG. 18 from the state shown in FIG. 18 by raising the link-type lifting mechanism 1H on the head side. Change to state. Further, when the head side is inclined at a high level from the highest floor height (the state where the bed is raised to the highest position) of the bed apparatus 1A, the foot-side link type lifting mechanism 1F is lowered.

  Further, when the bed height of the bed apparatus 1A is in the middle of the adjustment range, the head side link type lifting mechanism 1H is raised and the foot side link type lifting mechanism 1F is lowered to move the head side. May be controlled to be highly inclined.

  In this way, the operation of tilting the head side of the upper frame 2 high can be controlled by combining the lifting operation of the link-type lifting mechanism 1H on the head side and the lifting operation of the link-type lifting mechanism 1F on the foot side. .

  In order to reduce the head side inclination of the upper frame 2 of the bed apparatus 1A, the head side link type lifting mechanism 1H may be lowered. Further, when the floor height of the bed apparatus 1A decreases the head-side inclination from the maximum floor height, the foot-side link type lifting mechanism 1F is raised.

  Further, when the bed height of the bed apparatus 1A is in the middle of the adjustment range, the head side link type lifting mechanism 1H is lowered and the foot side link type lifting mechanism 1F is raised so that the head side. May be controlled to be inclined slightly.

  Thus, the operation of tilting the head side of the upper frame 2 small can be controlled by combining the lifting operation of the head-side link type lifting mechanism 1H and the lifting operation of the foot-side link type lifting mechanism 1F. .

  Next, when the foot side of the upper frame 2 of the bed apparatus 1A is inclined high, the upper frame 2 is shown in FIG. 19 from the state shown in FIG. 19 by raising the link-type lifting mechanism 1F on the foot side. Change to state. Further, when the floor height of the bed apparatus 1A is inclined higher than the maximum floor height, the link type lifting mechanism 1H on the head side is lowered.

  Further, when the bed height of the bed apparatus 1A is in the middle of the adjustment range, the foot side link type lifting mechanism 1F is raised and the head side link type lifting mechanism 1H is lowered to move the foot side. May be controlled to be largely inclined.

  In this way, the operation of tilting the foot side of the upper frame 2 high can be controlled by combining the lifting operation of the link-type lifting mechanism 1H on the head side and the lifting operation of the link-type lifting mechanism 1F on the foot side. .

  Then, in order to reduce the foot side inclination of the upper frame 2 of the bed apparatus 1A, the foot side link type lifting mechanism 1F may be lowered. Further, when the floor height of the bed apparatus 1A decreases the inclination on the foot side from the maximum floor height, the link type lifting mechanism 1H on the head side is raised.

  Further, when the floor height of the bed apparatus 1A is in the middle of the adjustment range, the foot side link type lifting mechanism 1F is lowered and the head side link type lifting mechanism 1H is raised so that the foot side May be controlled to be inclined slightly.

  In this way, the operation of tilting the foot side of the upper frame 2 small can be controlled by combining the lifting operation of the head-side link type lifting mechanism 1H and the lifting operation of the foot-side link type lifting mechanism 1F. .

  Since it comprised as mentioned above, according to this embodiment, in the bed apparatus 1A provided with the link type raising / lowering mechanism 1H, 1F which raises / lowers the upper frame 2 and this upper frame 2, the head side and foot side of the upper frame 2 The link type lifting mechanisms 1H and 1F are respectively arranged at the lower part of the frame so that the load applied to the link type lifting mechanisms 1H and 1F, that is, the load applied to the upper frame 2 and the weight of the upper frame itself, the link type lifting mechanism 1H , 1F can be divided and received on the head side and the foot side, so that the structure of the link type lifting mechanisms 1H, 1F on the head side and the foot side is divided. Lightweight and compact according to the load capacity. Thereby, conveyance and disassembly / assembly can be facilitated, and a bed apparatus excellent in workability and maintainability can be realized.

  Furthermore, according to the present embodiment, by providing the connecting frame 7 that integrally connects the link type lifting mechanisms between the head side link type lifting mechanism 1H and the foot side link type lifting mechanism 1F, By connecting the head-side link type lifting mechanism 1H and the foot-side link type lifting mechanism 1F by the connecting frame 7 without providing a base frame (frame body) or the like for mounting the link type lifting mechanism, The lower frame that supports the frame 2 can be configured easily. That is, since the lower frame can be divided into three parts by the link-type lifting mechanism 1H on the head side, the link-type lifting mechanism 1F on the foot side, and the connecting frame 7, a lightweight and compact lower frame can be realized.

  Further, according to the present embodiment, since the operation control by the head-side link type lifting mechanism 1H and the foot-side link type lifting mechanism 1F can be performed independently or in a coordinated control, the entire bed apparatus is lifted and lowered. Since it can be easily made to be inclined or inclined, the inclination angle desired by the user can be easily set.

  In the present embodiment, as the link type lifting mechanisms 1H and 1F, the first link 31 and the second link 32 are connected between the base portion 10 and the lifting portion 20 so as to be rotatable at respective intermediate positions. The first link 31 has a character-like link mechanism 30 and one end side 31a is rotatably connected to the elevating part 20 and the other end side 31b is movably connected along the base part 10, As the configuration of the second link 32, one end side 32 a is rotatably connected to the base portion 10, and the other end side 32 b is movably connected along the lifting / lowering portion 20, and between the base portion 10 and the lifting / lowering portion 20. The third link 40 and a linear actuator 50 for driving the third link 40 are provided. As the configuration of the third link 40, one end side 40a is rotatably connected to the elevating unit 20, and the other end side 42b is connected to the second link 42b. 1 link 31 Since the rotating roller 421 that is in contact is provided and the rotating roller 421 is pressed against the first link 31 by the linear motion actuator 50 and is urged only in the direction in which the elevating unit 20 is raised, the link mechanism has a frame structure. Therefore, it can be configured in a simple and compact manner, and cost reduction, assembling and maintenance can be improved. And by comprising in this way, since the raising / lowering part 20 becomes link free in the descent | fall operation | movement, the risk of property damage by the pinching by the drive of the linear motion actuator 50 at the time of the descent | fall of the raising / lowering part 20 can be reduced.

  Further, according to the present embodiment, the connecting frame 7, the head-side link type lifting mechanism 1H, and the foot-side link type lifting mechanism 1F are connected to each other between the bottom surface of the connection frame 7 and the floor surface FL. Since it is configured to provide a space of height H, for example, when the care device is arranged around the bed, there is no interference near the floor even if the base of the care device is placed under the bed. It can be installed easily.

  Further, according to the present embodiment, the connecting frame 7 is configured to be narrower than the link-type lifting mechanism 1H on the head side and the link-type lifting mechanism 1F on the foot side in the width direction with respect to the longitudinal direction of the upper frame 2. Thus, it is possible to realize a frame configuration that does not interfere with the feet around the lower portion of the upper frame 2.

  In addition, according to the present embodiment, the connecting frame 7 is disposed at a substantially central portion in the bed width direction between the head-side link type lifting mechanism 1H and the foot-side link type lifting mechanism 1H. The foot space at the end of the direction can be made clean.

  Moreover, according to this embodiment, in order to connect link type raising / lowering mechanism 1H, 1F and the connection frame 7, as a structure of the connection frame 7, the frame side of the both ends connected to link type raising / lowering mechanism 1H, 1F The connecting portion 72 is provided with a fitting portion 72b for positioning the link type lifting mechanisms 1H, 1F, and attachment portions 71c for fixing to the link type lifting mechanisms 1H, 1F side at both ends of the long frame 71. As a configuration of the link type lifting mechanism 1H, 1F, the long frame 101 of the base 10 is provided with a fitting hole 101c for positioning to the connecting frame 7 and a lifting side connecting portion 170 for connecting to the connecting frame 7. The elevating side connecting portion 170 is provided with an attaching hole 170c for fixing the attaching portion 71c of the connecting frame 7.

  With this configuration, when assembling the connecting frame 7 and the link type lifting mechanisms 1H and 1F, the positioning can be easily performed, and the positioning by the fitting portion 72b and the fitting hole 101c allows the connecting frame 7 and Since the lifting / lowering side connecting portion 170 can be fixed to the mounting portion 71c by the knob bolt 170d in a state where the link type lifting mechanisms 1H and 1F are assembled without rattling, the rigidity of the connecting portion between the connecting frame 7 and the link type lifting mechanisms 1H and 1F is secured. Can be increased. The rigidity of the bed apparatus 1A can be increased.

  Note that the present invention is not limited to the above-described embodiments and modifications, and various modifications are possible within the scope of the claims. That is, embodiments obtained by combining technical means appropriately changed within the scope not departing from the gist of the present invention are also included in the technical scope of the present invention.

  The bed apparatus of the present invention can be used for medical, nursing, home beds and the like.

DESCRIPTION OF SYMBOLS 1 Link type raising / lowering mechanism 1A Bed apparatus 1B Lower frame 1F Foot side link type raising / lowering mechanism 1H Head side link type raising / lowering mechanism 2 Upper frame 7 Connection frame 10 Base 20 Lifting part 30 Link mechanism 31 1st link 32 2nd link 40 Third link 50 Linear actuator (drive means)
71 Long frame 71c Attachment part 72 Frame side connection part 72b Fitting part (positioning part)
101c Fitting hole (positioning part)
110, 210 Guide member 170 Lifting side connecting portion 170c Mounting hole (mounting portion)
170d Knob bolt (Mounting bolt)
θ1, θ2 tilt angle

Claims (6)

In a bed apparatus provided with an upper frame and a link type lifting mechanism for lifting and lowering the upper frame,
The link type lifting mechanism is disposed at the lower part of the head side and the foot side of the upper frame,
A link frame is provided between the head-side link-type lifting mechanism and the foot-side link-type lifting mechanism so that the link-type lifting mechanisms can be divided and connected together,
The link type lifting mechanism includes a driving means for driving the link type lifting mechanism,
Wherein said head side of the linked lift mechanism by the drive means controlling the operation of the foot side of the linked lift mechanism, the bed apparatus characterized by being configured so as to enable control with coordinated. The link type lifting mechanism includes an X-shaped link mechanism in which a first link and a second link acting on the lifting part are rotatably connected to each other between a base part and a lifting part. The first link is pivotally connected at one end side to the elevating part, the other end side is movably connected along the base part, and the second link is pivotable at the one end side to the base part. while being connected to the other end is movably connected along the elevating portion, between the base and the elevating unit, and a third link which acts on the link mechanism, before Symbol third link The one end side is rotatably connected to the base part or the elevating part, and the other end side is provided so as to be able to contact and separate from the first link or the second link, and the other end side is provided by the driving means. The first link or the second link Bed apparatus according to claim 1, characterized in that it is configured to bias only in the direction to increase the lift part in contact with the click.   2. The connecting frame according to claim 1, wherein a space is provided between the connecting frame and a floor surface in a state where the link-type lifting mechanism on the head side and the link-type lifting mechanism on the foot side are connected. Or the bed apparatus of 2.   The connecting frame is configured to be narrower than the link-type lifting mechanism on the head side and the link-type lifting mechanism on the foot side in the width direction with respect to the longitudinal direction of the upper frame. The bed device according to any one of 3.   5. The bed apparatus according to claim 4, wherein the connecting frame is disposed at a substantially central portion in the bed width direction between the link-type lifting mechanism on the head side and the link-type lifting mechanism on the foot side. . The connecting frame positions the head side link type lifting mechanism and the foot side link type lifting mechanism at both ends connected to the head side link type lifting mechanism or the foot side link type lifting mechanism. A positioning part for mounting, and an attachment part for fixing to the link-type lifting mechanism on the head side or the link-type lifting mechanism on the foot side,
The head-side link-type lifting mechanism and the foot-side link-type lifting mechanism include a positioning portion for positioning the connection frame and an attachment portion for fixing the connection frame. The bed apparatus according to any one of claims 1 to 5.

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