JP6818059B2 - Bed device - Google Patents

Description

The present invention relates to a back-raising bed device suitable for use by a physically handicapped user.

For example, a back-raising bed device is used as a bed device used by a physically handicapped user. In the back-raising type bed device, the floor plate body provided on the bed frame is divided into a plurality of parts such as a back floor portion, a waist floor portion, and a leg floor portion, and the floor plate body is rotatably connected. The back floor is designed to correspond to the upper body of the user. Then, the back floor portion can be driven up and down by a back raising mechanism.

In the above-mentioned back-raising type bed device, in the case of a user whose physical strength is reduced, when the back floor is raised and the upper body is raised, the posture cannot be maintained and the user falls sideways. There is a risk that. Therefore, as shown in Patent Document 1, a bed device capable of preventing a user whose upper body is raised from falling sideways has been proposed.

The bed device shown in Patent Document 1 is composed of a back floor portion having a central back portion and a pair of side portion back portions rotatably connected to both sides of the central back portion. The back floor portion is made of foamed resin, and a pair of ridge portions each having an inclined surface is integrally molded on the back surface of the pair of the side portion back portions. An inclined portion is formed at the end portion of the ridge portion, which is the upper end when the back is raised.

On the other hand, the back raising arm that undulates and drives the back raising floor portion is provided with a pushing roller in addition to the back raising roller. When the push-up roller drives the back-raising arm to rotate in the ascending direction to raise the back-raising floor portion, the push-up roller is attached to the ridge portion provided on the back surface of the side portion back portion to be raised. Ride on an inclined surface and roll. As a result, the back portion of the side portion is pressed toward the front surface side of the central back portion according to the height of the ridge portion.

As a result, the pair of the side backs rotates forward with one side in the width direction connected to the center back as a fulcrum, so that the upper body of the user is raised by the pair of rotated side backs. This will prevent the head from tipping sideways.

Japanese Patent No. 3910873

According to the conventional structure described above, a pair of the ridges are integrally molded on the back surface of the side back of the back-raising floor, and the push-up roller provided on the back-raising arm is pushed when the back is raised. Roll the upper surface of the strip. As a result, the push-up roller presses and rotates the back portion of the side portion so as to incline toward the front surface side of the central back portion.

However, according to such a configuration, the push-up roller must be provided on the back-raising arm and the ridge portion must be provided on the back of the side as a component constituting the mechanism for inclining the back of the side.

That is, the back-raising arm constituting the back-raising mechanism for undulating and driving the back-floor portion with respect to the waist-floor portion is provided with the push-up roller constituting the mechanism for inclining the side portion of the back-floor portion. Alternatively, the ridge portion must be provided on the back surface of the side portion. Moreover, the back-raising arm, the pushing-up roller, and the ridge portion must be positioned and provided so as to be related to each other.

Therefore, the relative assembling accuracy and manufacturing accuracy of the back-raising drive mechanism and the mechanism for inclining the side back portion are required, which may take time and effort for the manufacturing and assembling work.

The present invention provides a bed device capable of rotating the side backs provided on both sides of the central back of the backbed by a mechanism separated from the back-raising drive mechanism in the forward direction when the back is raised. There is.

The present invention is a bed frame and
It has a fixed floor portion fixed to the bed frame, a central back portion, and a pair of side back portions connected to rotate forward on both sides of the central back portion, and is rotatably connected to the fixed floor portion. A floorboard body with a back floor and
A back-raising drive mechanism that undulates and drives the back floor portion of the floor plate body,
An operating shaft rotatably supported on the back surface of the central back portion along the width direction of the central back portion.
The mounting member provided in the middle of this operating shaft and
One end is fixed to the mounting member, and the other end is fixed to a portion where tension is generated when the back floor portion is driven in the rising direction by operating the back raising drive mechanism, and the operation is performed by the tension. A transmission member that rotates the shaft in a predetermined direction,
When both ends of the operating shaft are provided so that the angle can be changed with respect to the circumferential direction of the operating shaft, the backbed portion is driven in the upright direction by the angle, and the operating shaft is rotated by the transmission member. The bed device is provided with a pressing member positioned at either an operating position for rotating the pair of side backs forward and a non-operating position for not rotating the side portion forward. is there.

According to the above-described configuration, the mechanism required for driving the side back portion of the backfloor portion to be inclined forward is not related to the mechanism for undulating the backfloor portion, and the back portion Since it can be provided on the back side of the mechanism, it is possible to facilitate the assembly accuracy and the manufacturing accuracy of the mechanism for inclining the back portion of the side portion forward.

The perspective view of the bed apparatus which raised the back floor portion which shows the 1st Embodiment of this invention. The perspective view which laid down the floor plate body of the bed device. Top view showing the bed frame. Explanatory drawing of the drive mechanism which undulates and drives a floor plate body. The figure which shows the back side of the back floor part of a floor board body, the 1st and 2nd waist floor part, and a fixed floor part. The figure which shows the tension state of the wire which drives the side part back part of the backfloor part with the back-raising drive. (A) is a plan view of a part of one end of an operating shaft provided with a pressing member, and (b) is a side view. A side view of a floor plate body showing a head-up mechanism in a state where the back floor portion is not tilted forward when the back floor portion is raised. A side view of a floor plate body showing a head-up mechanism in a state where the back floor portion is tilted forward when the back floor portion is raised. (A) is a rear view in a state where the side back of the back floor is not tilted toward the front side of the central back, and (b) is a rear view in a state where the side back is also tilted toward the front side of the center back. .. The figure which shows the back floor part of the floor plate body of the 2nd Embodiment of this invention, the 1st and 2nd waist floor part, and the back side of the fixed floor part. (A) is a side view of the floor plate body shown in FIG. 11, and (b) is a side view of the back floor portion tilted forward by a head-up mechanism. 12 (a) is an enlarged side view of the back floor, and (b) is an enlarged side view of the back floor of FIG. 12 (b). (A) is a plan view showing a side-up mechanism and a head-up mechanism provided on the back side of the backfloor portion, (b) is the same front view, and (c) is the same side view. An enlarged view of a part of the connecting portion between the mounting arm of the head-up mechanism and the movable arm.

Hereinafter, the first embodiment of the present invention will be described with reference to FIGS. 1 to 10.

1 and 2 are perspective views of the bed device, which bed device includes the base frame 1 shown in FIG. The base frame 1 is formed in a rectangular shape, and installation legs 2 are provided at its four corners. In addition, casters may be provided instead of the installation leg 2.

As shown in FIG. 2, one end of a connecting rod 4 (only three places shown) constituting the vertical drive mechanism 3 is pivotally attached to the upper surface of the four corners of the base frame 1, and the other ends are configured as described later. It is pivotally attached to the four corners of the rectangular frame-shaped bed frame 5.

The four connecting rods 4 are interlocked and driven by the vertical drive source 6 via an interlocking link (not shown). That is, the connecting rod 4 is driven in the upright direction shown in FIG. 2 from a state in which the connecting rod 4 is horizontally laid down with one end pivotally attached to the base frame 1 as a fulcrum.

As a result, the bed frame 5 is driven from the descending position shown in FIG. 1 to the ascending position shown in FIG.

FIG. 3 shows the bed frame 5, which has a main body frame portion 11 formed in a rectangular frame shape. Adjustment frames 12 formed in a U shape at one end and the other end of the main body frame portion 11 in the longitudinal direction move along the longitudinal direction of the main body frame portion 11 as shown by arrows X in FIG. It is held possible.

The pair of adjustment frames 12 provided on one end side and the other end side in the longitudinal direction of the main body frame portion 11 can move along the longitudinal direction of the main body frame portion 11 as shown by an arrow X. Moreover, it is provided so as to be fixed at a predetermined moving position by a stopper means (not shown).

That is, the entire length of the bed frame 5 can be changed according to the height of the user or the like by adjusting the mounting position of the adjusting frame 12 with respect to the main body frame portion 11. ing.

A pair of support members 14 are provided on both sides of the pair of adjustment frames 12. One end of the arm member 15 is rotatably connected to both ends of each support member 14, and the other end of the arm member 15 is pivotally attached to the adjustment frame 12.

As a result, the support member 14 can move between a position close to the side portion of the adjustment frame 12 shown by a solid line in FIG. 3 and a position away from the side portion of the adjustment frame 12 shown by a chain line.

Support holes 16 are formed on the upper surface of the support member 14 at both ends in the longitudinal direction. When the support member 14 is moved to the position indicated by the chain line, the side fence (not shown) is supported by inserting the pair of legs into the support hole 16.

As shown in FIGS. 1 and 2, a board body 17 serving as a headboard and a footboard is provided on the short side portion of the adjustment frame 12 in a standing position by connecting the lower end portions.

Decorative members 18 are provided on both sides of the main body frame portion 11 in a portion between the pair of support members 14. The decorative member 18 is provided so that the side surface thereof is substantially aligned with the side surface of the adjustment frame 12 when the support member 14 is positioned close to the side side of the adjustment frame 12.

As a result, when the support member 14 is not used, the support member 14 and the decorative member 18 are integrally prevented from forming a step on the side surface of the bed frame 5, so that a good appearance is exhibited. It will be.

As shown in FIGS. 1 and 2, a floor plate body 25 is provided on the upper surface of the bed frame 5.

The floor plate body 25 has a pair of fixed floor portions 26 which are divided into two and attached and fixed in the middle portion in the longitudinal direction of the main body frame portion 11.

A first waist floor portion 27 and a second waist floor portion 28 are sequentially rotatably connected to the fixed floor portion 26. A connecting portion 29 is formed so as to protrude on one side of the second waist floor portion 28, and a back floor portion 31 is connected to the connecting portion 29.

As shown in FIG. 1, the back floor portion 31 has a central back portion 32 whose lower end is rotatably connected to the connecting portion 29, and a pair of side back portions 33 connected to both sides of the central back portion 32. The central back portion 32 rotates only in the front direction (front) with the lower end as a fulcrum, and the side portion back portion 33 rotates only in the front direction with one side connected to the central back portion 32 as a fulcrum. It is designed to do.

A pair of the first leg floor portion 35 and the second leg floor portion 36 are sequentially rotatably connected to the other fixed floor portion 26.

The first waist floor portion 27 and the second waist floor portion 28 of the floor plate body 25, and the first leg floor portion 35 and the second leg floor portion 36 are composed of two overlapping members. The other member is movably provided for each one member. Then, when the other movable member is moved with respect to one member, the other member can be fixed to the one member at a predetermined moving position.

Thereby, when the length of the bed frame 5 is changed by moving the adjusting frame 12 with respect to the main body frame portion 11, the floor plate body 25 can be set to a length corresponding to the bed frame 5. It has become.

The bed frame 5 is provided with the back-raising drive mechanism 37 shown in FIG. 4, and the floor plate body 25 is horizontally laid down by the back-raising drive mechanism 37 as shown in FIG. 2, as shown in FIG. The first waist floor portion 27, the second waist floor portion 28, the back floor portion 31, the first leg floor portion 35, and the second leg floor portion 36 can be driven in an ascending direction. You can do it.

The back-raising drive mechanism 37 has a drive unit 38 having a drive source (not shown) built therein. The drive unit 38 is provided with a first drive shaft 41 and a second drive shaft 42 with their axes parallel to each other, and is rotationally driven by a drive source (not shown).

Both ends of the first drive shaft 41 and the second drive shaft 42 are rotatably supported on both inner surfaces of the main body frame portion 11 of the bed frame 5. The first drive shaft 41 is rotationally driven by the drive source built in the drive unit 38.

A link 43 is provided at one end of the first drive shaft 41 and the second drive shaft 42 in the axial direction, respectively. One end and the other end of the connecting arm 44 are rotatably connected to the pair of links 43.

As a result, if the first drive shaft 41 is rotationally driven, the second drive shaft 42 is interlocked with the rotation via the connecting arm 44.

A pair of back-raising arms 45 are provided at both ends of the first drive shaft 41 by connecting the base ends. A pair of back-raising rollers 46 are rotatably provided at the tip ends of the pair of back-raising arms 45 at predetermined intervals.

Mounting links 47 are provided at both ends of the second drive shaft 42 with one ends connected to each other. At the other end of the mounting link 47, a base end portion of a leg link 49 provided with a leg raising roller 48 rotatably provided at the tip thereof is pivotally attached.

One end of the interlocking link 51 is pivotally attached to the base end of the leg link 49, and the other end of the interlocking link 51 is pivotally attached to the end portion of the second drive shaft 42. When the second drive shaft 42 rotates in conjunction with the first drive shaft 41, the leg raising roller 48 interlocks with the rotation of the interlocking link 51, the leg link 49, and the mounting link 47. , The leg raising roller 48 provided at the tip of the link 49 is driven in the ascending direction from the lower position.

As a result, the back-raising drive mechanism 37 drives the floor plate body 25 in a horizontally laid-down state as shown in FIG. 2, and the first and second waist floor portions 27, 28 as shown in FIG. And the back floor portion 31 is raised. Further, the second leg bed portion 36 is raised while bending the first leg bed portion 35.

FIG. 5 shows the back surface of the back floor portion 31 of the floor plate body 25 (the lower surface when the back floor portion 31 is horizontally laid down as shown in FIG. 2). On the back surface of the second waist floor portion 28, a pair of back-raising rails 53 separated at predetermined intervals in the width direction of the second waist floor portion 28 are fixed.

The back raising rail 53 is formed of a member having a U-shaped cross section, and has a length extending over the back surface of the second waist floor portion 28 and the central back portion 32 of the back floor portion 31.

The back-raising rail 53 is provided with the back-raising roller 46 shown in FIG. 4 rotatably engaged with the back-raising rail 53. As a result, the first drive shaft 41 is rotationally driven and the back raising arm 45 is driven in the rising direction, so that the back raising roller 46 rolls along the back raising rail 53. As shown in FIG. 1, the first waist floor portion 27 is in a prone state shown in FIG. 2 in conjunction with the second waist floor portion 28, the back floor portion 31, and the second waist floor portion 28. It is driven in the rising direction.

At this time, if the second drive shaft 42 is interlocked with the first drive shaft 41, the first leg floor portion 35 and the second leg floor portion 36 can be driven in the ascending direction. Whether or not the second drive shaft 42 is interlocked with the first drive shaft 41 can be selectively set.

The floor plate body 25 is provided with a pair of head-up rails 55 fixed inward in the width direction of the pair of back-raising rails 53 with one end fixed to the lower surface (back surface) of the first waist floor portion 27. ing. The head-up rail 55 is used to tilt the central back portion 32 of the backfloor portion 31 forward with its base end as a fulcrum, as will be described later.

As shown in FIG. 5, on the back surface of the central back portion 32 of the back floor portion 31, a hollow operating shaft 56 above the tips of the pair of back raising rails 53 has both ends held by holders 57. It is rotatably held and provided.

An arm 58 as a mounting member having a predetermined length is provided at one end of the operating shaft 56 in the middle in the axial direction. One end of the wire 59 as a conductive member is fixed to the other end of the arm 58. The wire 59 is engaged with the roller 60 and redirected to approach the back surface of the central back portion 32, after which the other end extends toward the back surface of the second lumbar floor portion 28.

A horizontal member 61 is erected at one end of the pair of back-raising rails 53 located on the second waist floor 28 side with both ends fixed. A holder 62 is provided in the middle of the horizontal member 61.

As shown in FIG. 6, the take-up shaft 63 to which the pulley 63a is attached is rotatably supported on the holder 62. A tightening member 64 such as a nut is provided at one end of the take-up shaft 63, and the tightening member 64 can hold the take-up shaft 63 non-rotatably.

The other end of the wire 59 is wound around the pulley 63a of the winding shaft 63. Therefore, by adjusting the winding length of the wire 59 by the pulley 63a, the length from one end of the wire 59 connected to the arm 58 to the other end of the winding shaft 63 can be set. It has become.

When the back floor portion 31 is driven in the raised direction while bending the first and second waist floor portions 27 and 28 by the back raising drive mechanism 37, the wire 59 connects one end and the other end. The linear distance becomes smaller and tension is generated.

When tension is generated in the wire 59, the tension is transmitted to the mounting shaft 56 via the arm 58. As a result, the operating shaft 56 rotates in a direction in which the tip end side of the arm 58 approaches the back surface of the central back portion 32.

As described above, the other end of the wire 59 is wound around the take-up shaft 63 of the holder 62 so as to be adjustable in length. On the other hand, the floor plate body 25 has a structure in which the length can be adjusted as described above.

Therefore, when the length of the floor plate body 25 is changed according to the height of the user or the like, the winding amount of the other end of the wire 59 with respect to the winding shaft 63 is adjusted according to the length change to adjust the total length. change. As a result, even if the length of the floor plate body 25 is changed, the back floor portion 31 can be reliably raised with a constant tension.

The other end of the wire 59 was fixed to the holder 62 provided with the horizontal member 61 erected between the pair of back raising rails 53, but the other end of the wire 59 was the back. A portion other than the lateral member 61 erected between the raising rails 53, that is, a portion where tension is generated in the wire 59 when the backfloor portion 31 is driven in the rising direction, for example, the first or second portion. It may be fixedly provided on the waist floor portions 27, 28, the fixed floor portion 26, or the like.

Pressing on both ends of the operating shaft 56 includes rollers that press the back surface of the side back portion 33 of the back floor portion 31 and rotate it forward when the operating shaft 56 is rotated by the wire 59. A member 66 is provided.

That is, as shown in FIGS. 7A and 7B, a support shaft 67 is provided at the end of the operating shaft 56 with one end rotatably inserted. A mounting groove 68 that penetrates in the radial direction and is open to the tip surface of the support shaft 67 is formed at the other end of the support shaft 67. One end of a stopper member 69 having an L-shaped side surface is mounted and fixed to the mounting groove 68. A gap 71 at a predetermined interval is formed between the other end of the stopper member 69 and the outer peripheral surface of the support shaft 67, and one end of the peripheral wall of the operating shaft 56 in the circumferential direction enters the gap 71. I'm out.

A mounting shaft 72 is mounted on one end of the stopper member 69 with its axis tilted at a predetermined angle, for example, an angle of 45 degrees with respect to the axis of the support shaft 67. The pressing member 66 is rotatably attached to the tip of the attachment shaft 72.

A plate-shaped holding member 73 having an intermediate portion in the vertical direction fixed along the axial direction of the outer peripheral surface of the support shaft 67 is attached to both ends of the operating shaft 56, and both ends in the vertical direction are fixed to the operating shaft 56. It is provided so as to project outward in the radial direction of the.

The holding member 73 is provided so as to be on one side surface side of the stopper member 69, that is, on the front side of the stopper member 69 when the operating shaft 56 is attached to the back surface of the central back portion 32.

As a result, the mounting shaft 72 rotates the support shaft 67 with respect to the operating shaft 56 so that the axis of the mounting shaft 72 is upward with respect to the axis of the operating shaft 56 as shown in FIG. The stopper is in either a state of being inclined toward (non-operating position) or a state of being rotated 180 degrees from this non-operating position and the axis of the mounting shaft 72 is inclined downward (operating position). The member 69 is held by hitting the lower end portion or the upper end portion in the height direction of the holding member 73.

FIG. 7B shows a state in which the axis of the mounting shaft 72 is inclined downward and is held at the operating position, and the stopper member 69 is the front surface of the lower end portion 73a of the holding member 73 in the vertical direction. It shows the state of being engaged to the side.

When the back is raised, when the operating shaft 56 is rotated in the direction indicated by the arrow R in FIG. 7B by the tension of the wire 59, the mounting shaft 72 is moved via the holding member 73 and the operating shaft 56. It rotates toward the back side of the side back portion 33.

When the mounting shaft 72 rotates, the pressing member 66 provided at the tip thereof rotates in a direction of pressing the back surface of the side back portion 33. As a result, the side back portion 33 is not inclined toward the front surface side of the central back portion 32 as shown in FIG. 10 (a), but is moved to the front surface side of the central back portion 32 as shown in FIG. 10 (b). It is driven to tilt.

As a result, the side back portion 33 is in a state of preventing the head of the user whose upper body is supported by the back floor portion 31 from falling in the lateral direction.

Since one side of the side back portion 33 is connected so as to rotate only to the front side of the central back portion 32, the side portion back portion 33 can freely rotate to the front side of the central back portion 32 with the one side as a fulcrum. ing.

Therefore, when the side back portion 33 raised forward by the pressing member 66 is returned to the non-raised state, the side back portion 33 is higher than the state raised by the pressing member 66. Rotate further forward.

Then, the mounting shaft 72 in the operating position is rotated to the non-operating position where the axis thereof is inclined upward with respect to the axis of the operating shaft 56, and the stopper member 69 is placed at the upper end of the holding member 73 at that position. The mounting shaft 72 is held by engaging with the portion 73b.

As a result, the holding state of the side back portion 33 by the pressing member 66 is released, so that the side back portion 33 can be returned to the non-tilted state.

Further, if the back floor portion 31 is raised while the mounting shaft 72 is held in the non-operating position, the back floor portion 31 is raised without tilting the side back portion 33 forward. be able to.

That is, according to the above-described configuration, when the back floor portion 31 is raised, the stopper member 69 is rotated to position the pressing member 66 in the operating position or the non-operating position, whereby the side back portion 33 is used. Can be selected whether or not to rotate in the rising direction.

The side-up mechanism 74 is a mechanism for driving the pair of side back portions 33 provided on both sides of the central back portion 32 of the back floor portion 31 in a direction of inclining forward.

The central back portion 32 whose lower end is rotatably connected to the connecting portion 29 of the second waist floor portion 28 in the forward direction is inclined forward by the head-up mechanism 75 shown in FIGS. 5, 8 and 9. It is designed to be able to.

As shown in FIG. 5, the head-up mechanism 75 is provided at both ends of the central back portion 32 of the backfloor portion 31 in the width direction of the central back portion 32 in a direction intersecting the width direction (vertical direction). It has a pair of head-up guides 76 provided along the line. Both ends of the support shaft 77 are rotatably supported between one ends of the pair of head-up guides 76 located on the upper end side.

As shown in FIGS. 8 and 9, one end of the head-up arm 78 is connected and fixed to each end of the support shaft 77. A head-up roller 79 engaged with the head-up rail 55 is rotatably supported at the other end of the head-up arm 78.

On the side surface of the head-up guide 76, there is an arc-shaped first guide groove 81 and a second guide groove which is also arc-shaped, concentric with the first guide groove 81, and at the same angle in the circumferential direction. 82 and are formed.

As shown in FIG. 5, one end and the other end of the rod-shaped positioning member 83 are movably inserted and supported in the pair of the first guide grooves 81. One end of the arm member 84 is connected and fixed to one end and the other end of the positioning member 83, respectively. The other ends of the pair of arm members 84 are connected by a connecting rod 85.

A rod-shaped operating member 86 having one end fixed to the arm member 84 and the other end protruding from the second guide groove 82 toward the outer surface side of the head-up guide 76 in the middle portion of the arm member 84. Is provided.

As shown in FIG. 8, when the positioning member 83 is located on one end side of the first guide groove 81, the head with the head up roller 79 provided at one end engaged with the head up rail 55. One side surface of the up arm 78 is pressed by the positioning member 83 so that the up arm 78 does not rotate forward. As a result, the backfloor portion 31 is held in a state where it is not laid down forward with the lower end as a fulcrum.

As shown in FIG. 9, the operating member 86 rotates the arm member 84 with the connecting rod 85 as a fulcrum, and moves the positioning member 83 from one end side to the other end side of the first guide groove 81. Then, the positioning member 83 presses the middle portion of the head-up arm 78.

As a result, the head-up arm 78 has the head-up roller 79 engaged with the head-up rail 55, that is, the back floor portion of the head-up arm 78 having one end as a fulcrum and one other end side indicated by an arrow W in FIG. It rotates toward the front side of 31.

As a result, since the backfloor portion 31 rotates in the direction of lying forward with the lower end as a fulcrum, the head of the user whose upper body is positioned on the backfloor portion 31 is raised forward.

As described above, the backfloor portion 31 raises the backfloor portion 31 and then operates the operation member 86 to move the positioning member 83 from one end to the other end of the first guide groove 81. By letting it tilt forward.

Further, when the backfloor portion 31 is in the inverted state, the operating member 86 is operated in advance to move the positioning member 83 from one end to the other end of the first guide groove 81, and then the backfloor portion 31 is laid down. When the portion 31 is raised, the distance between the second waist floor portion 28 of the head-up rail 55 and the other end portion facing the back surface of the back floor portion 31 is shown in FIG. From the state shown, it is enlarged as shown in FIG.

As a result, as shown in FIG. 9, the head-up arm 78 is pressed by the positioning member 83 and held in a state of being rotated forward with the head-up roller 79 as a fulcrum, so that the backfloor portion 31 is held. It can be tilted to the front side.

That is, according to the above-described configuration, the backfloor portion 31 is tilted forward by operating the operation member 86 after driving the backfloor portion 31 in the ascending direction by the back-raising drive mechanism 37. Can be done.

Not only that, when the backfloor portion 31 is in the collapsed state, the operating member 86 can be operated to move the positioning member 83 from one end to the other end of the first guide groove 81. By raising the backfloor portion 31, the backfloor portion 31 can be laid down forward in conjunction with the raising.

According to the bed device having such a configuration, the pair of side back portions 33 provided on both sides of the central back portion 32 of the back floor portion 31 are rotated forward as the back floor portion 31 rises. The members such as the operating shaft 56, the wire 59, and the pressing member 66 for moving are operated and arranged with the members constituting the back raising drive mechanism 37 for undulating and driving the back floor portion 31. It can be provided on the back surface side of the floor plate body 25 without being related to.

That is, by the mechanism separated from the back raising drive mechanism 37, the side back portions 33 provided on both sides of the central back portion 32 of the back floor portion 31 can be rotated in the forward direction when the back is raised.

Therefore, the side back portion 33 can be rotated in the forward direction when the back is raised by a mechanism that does not require relative assembly accuracy or manufacturing accuracy with the back raising drive mechanism 37. It can be easily manufactured and assembled.

The length of the bed frame 5 and the floor plate body 25 of the bed device can be changed according to the height of the user. When the lengths of the bed frame 5 and the floor plate body 25 are changed, the length of the wire 59 used for rotating the side back portion 33 in the forward direction when raising the back must be adjusted.

The other end of the wire 59, one end of which is connected to the operating shaft 56 via the arm 58, is wound around the take-up shaft 63 so as to be adjustable in length.

Therefore, when the lengths of the bed frame 5 and the floor plate body 25 are changed, the length of the wire 59 can also be changed according to the length change. Therefore, even in such a case, when the back is raised. The pair of side back portions 33 of the back floor portion 31 can be reliably rotated forward so as to hold the user's head.

The head-up mechanism 75 raises the backfloor portion 31, and then moves the positioning member 83 along the first guide groove 81 by the operating member 86 to raise the backfloor portion 31. It can be held in a state of being tilted forward.

Not only that, if the positioning member 83 is moved in advance along the first guide groove 81 before raising the back floor portion 31, the back floor portion 31 can be moved to the back raising drive mechanism 37. The backfloor portion 31 can be tilted forward in conjunction with the operation of raising the floor.

Therefore, depending on the physical condition of the user and the like, the backfloor portion 31 may be tilted forward when it is raised, or the backfloor portion 31 may be tilted forward after being raised. It may be convenient because it is possible to select a situation in which the backfloor portion 31 is tilted, such as causing the backfloor portion 31 to be tilted or returning the tilted backfloor portion 31 to the original non-tilted state.

The side-up mechanism 74 can be operated by driving the backfloor portion 31 in the rising direction, and the head-up mechanism 75 sets the position of the positioning member 83 with respect to the first guide groove 81. Can be operated with.

That is, the side-up mechanism 74 and the head-up mechanism 75 can be operated separately or at the same time. Therefore, the side-up mechanism 74 and the head-up mechanism 75 can be used properly or simultaneously depending on the state of the user's physical strength and the like, which is very convenient.

In the first embodiment described above, the floor plate body 25 is provided with the first and second waist floor portions 27 and 28, and the back floor portion 31 is connected to the second waist floor portion 28. However, the floor plate body 25 may not be provided with the first and second waist floor portions 27 and 28, and in such a case, the back floor portion 31 is connected to the fixed floor portion 26. You just have to do it.

Further, the pair of side back portions 33 provided on both sides of the central back portion 32 of the back floor portion 31 may be divided into a plurality of parts in the vertical direction.

Further, the bed device may not include the first and second waist floor portions 27 and 28. In such a case, the central back portion 32 of the back floor portion 31 may be rotatably attached to the fixed floor portion 26. In short, the central back portion 32 may be provided so as to be rotatably directly or indirectly with respect to the fixed floor portion 26.

Next, a second embodiment of the present invention will be described with reference to FIGS. 11 to 15. The same parts as those in the first embodiment are designated by the same symbols, and the description thereof will be omitted.

FIG. 11 shows the back side of the back floor portion 31, the first and second waist floor portions 27, 28, and the fixed floor portion 26 of the floor plate body 25, as in FIG. 6 of the first embodiment.

In the first embodiment, in order to form the head-up mechanism 75, the head-up rail 55 and the head-up arm 78, one end of which is fixed to the lower surface (back surface) of the first waist floor portion 27, Further, the head-up guide 76 and the like are provided, but in the second embodiment, the head-up rail 55, the head-up arm 78, the head-up guide 76 and the like are not used, and the head-up mechanism 75 is provided. Can be configured. In the second embodiment, the number indicating the head-up mechanism is 75A.

Hereinafter, the head-up mechanism 75A of the second embodiment will be described. That is, the operating shaft 56 is rotatably held at both ends by the holder 57 on the upper part of the back surface of the central back portion 32. As shown in FIGS. 11 and 14, a pair of strip-shaped mounting arms 101 are provided at both ends of the operating shaft 56 with one ends fixed so as to be orthogonal to the axis of the operating shaft 56. Has been done.

One end of the strip-shaped movable arm 102 is rotatably connected to the other end of the mounting arm 101 by a connecting shaft 103. As shown in FIG. 13, a roller-shaped operating member 104 is rotatably supported by a support shaft 105 at the other end of the movable arm 102.

The operating member 104 and the support shaft 105 constitute a regulating means for regulating the angle at which the backfloor portion 31 is inclined forward, as will be described later. The regulating means may be only the support shaft 105.

The operating member 104 is movably provided in the back raising rail 53 having a U-shaped cross section. The support shaft 105 is movably inserted into an elongated hole 106 formed along the longitudinal direction at the end of the back raising rail 53.

As shown in FIG. 12, the pair of back-raising rails 53 are formed with the elongated holes 106 at both ends in the longitudinal direction. By doing so, the pair of the back-raising rails 53 can be used without being restricted in positioning in the vertical direction. It should be noted that the elongated hole 106 may be substantially provided only at the end portion (upper end portion) of the back raising rail 53 on the back floor portion 31 side.

The movable arm 102 can be fixed to the mounting arm 101 in a linear state by a lock mechanism 108 so as not to rotate. As shown in FIGS. 13 (a) and 13 (b) and 14 (a), (b) and (c), the lock mechanism 108 has one end in the middle of the pair of left and right mounting arms 101 in the longitudinal direction. It has a pair of movable pieces 111 rotatably attached by a support shaft 110. One end and the other end of the locking rod 112 are fixed to the other ends of the pair of movable pieces 111, respectively.

As shown in FIGS. 12A and 13A, one end of the movable arm 102 in the width direction, that is, the end side of the movable arm 102 connected to the mounting arm 101 by the connecting shaft 103. A concave engaging portion 113 is formed on one side.

From the state in which the movable arm 102 is bent with respect to the mounting arm 101 as shown in FIGS. 12 (a) and 13 (a), the mounting arm is described as shown in FIGS. 12 (b) and 13 (b). After rotating the locking rod 112 so as to be substantially linear with respect to 101, the locking rod 112 is rotated together with the movable piece 111 with the support shaft 110 supporting the movable piece 111 as a fulcrum, and the pair of the above. It is elastically engaged with the engaging portion 113 of the movable arm 102.

As a result, as shown in FIGS. 12 (b) and 13 (b), the movable arm 102 is held so as to be non-rotatable in a state of being substantially linear with respect to the mounting arm 101.

When the mounting arm 101 and the movable arm 102 are linearly held by the lock mechanism 108 from the bent state, the backfloor portion 31 of the backfloor portion 31 is held via the operating shaft 56 to which the mounting arm 101 is mounted. The central back 32 is pressed forward.

As a result, the backfloor portion 31 provided with the operating shaft 56 on the back surface side is as shown in FIGS. 12 (b) and 13 (b) from the state shown in FIGS. 12 (a) and 13 (a). It tilts forward with the lower end pivotally attached to the connecting portion 29 of the second waist floor portion 28 as a fulcrum.

At this time, the operating member 104 provided at the other end of the movable arm 102 and engaged with the elongated hole 106 of the back raising rail 53 is shown in the figure of the back raising rail 53 in response to the tilt of the central back portion 32. It moves toward the upper end portion in 12 (b).

Further, the support shaft 105 provided with the operating member 104 is engaged with the elongated hole 106 of the back raising rail 53. Therefore, the backfloor portion 31 is prevented from falling forward beyond the length formed by the mounting arm 101 and the movable arm 102 linearly held by the lock mechanism 108.

That is, the operating member 104 limits the inclination angle so that the back floor portion 31, that is, the central back portion 32 does not incline too much forward.

As described above, the head-up mechanism 74A of the second embodiment attaches the mounting arm 101 and the movable arm 102 to the operating shaft 56 used for the side-up mechanism 74 described later.

Further, the actuating member 104 is held by the back raising rail 53 via the support shaft 105 inserted through the elongated hole 106, and the movable arm 102 rotatably connected to the mounting arm 101 is described. It is composed of the lock mechanism 108 which cannot be rotated by the lock rod 112 and can be held linearly.

Therefore, the head-up mechanism 75A has a configuration capable of reducing the number of parts and simplifying the configuration. Moreover, since the backfloor portion 31 can be tilted and the tilted state can be released only by operating the lock mechanism 108, the operation is also easy.

On the other hand, the side-up mechanism 74 in the second embodiment has substantially the same configuration as that in the first embodiment. That is, as shown in FIG. 11, tension is generated when the back floor portion 31 of the floor plate body 25 is driven in the rising direction by the back raising mechanism 37, and the tension causes the operating shaft 56 to move in a predetermined direction. It has the wire 59 as a transmission member to be rotated.

The wire 59 is inserted into the outer tube 121. One end of the wire 59 is attached and fixed to an attachment 122 provided on the lower surface of the first waist floor portion 27. One end of the wire 59 is engaged with a first roller 124 rotatably provided on a first holder 123 provided on the lower surface of the fixed floor 26 to change its direction.

One end of the outer tube 121 is held and fixed to the first holder 123. That is, one end of the wire 59 is exposed from the outer tube 121 between one end of the outer tube 121 and the attachment 122.

The outer tube 121 is bent by greatly loosening the middle portion, and the middle portion is held by a clip 125 provided on the back surface (lower surface) of the second waist floor portion 28. The other end of the outer tube 121 is held and fixed to a second holder 127 provided at the upper end of the central back portion 32.

The other end of the wire 59 led out from the other end of the outer tube 121 is engaged with a second roller 128 rotatably supported by the second holder 127, and the end is of the operating shaft 56. It is connected and fixed to an arm 58 as a mounting member provided in the central portion in the longitudinal direction.

As a result, the back raising mechanism 37 shown in FIG. 4 drives the back raising arm 45 in the raising direction, and the back raising roller 46 provided on the back raising arm 45 raises the back raising rail 53 in the raising direction. Drive to.

Then, since the back floor portion 31 rises in conjunction with the back raising rail 53, tension is generated in the wire 59 by the raising. When tension is generated in the wire 59, the tension causes the operating shaft 56 to rotate in a predetermined direction.

As shown in FIGS. 14 (a) to 14 (c), the pressing members 66 are provided at both ends of the operating shaft 56 so that the angle can be changed with respect to the circumferential direction of the operating shaft 56. Then, when the backfloor portion 31 is driven in the upright direction and the operating shaft 56 is rotated by the wire 59, the pressing member 66 rotates in a predetermined direction together with the operating shaft 56, and the pair of the side The back surface of the back portion 33 is pressed.

As a result, the pair of side back portions 33 are displaced from the non-operating position that does not rotate forward to the operating position that is pressed by the pressing member 66 and rotates forward. Such a configuration is the same as that of the first embodiment.

As shown in FIG. 11, a flat concave portion 33a is formed on the back surface portion of the back surface of the side portion back portion 33 so that the pressing member 66 rolls smoothly. ing.

The wire 59 as the transmission member is inserted through the outer tube 121. Therefore, when tension is generated in the wire 59 when raising the back, the wire 59 operates more smoothly than in the case where the wire 59 is not inserted through the outer tube 121.

The outer tube 121 has a length in which the middle portion is loosened together with the wire 59. Therefore, even when the length from the fixed floor portion 26 to the back floor portion 31, for example, the length dimension of the back floor portion 31 is changed to be longer according to the height of the user or the like, it differs depending on the slack. It can correspond to the length.

That is, the side-up mechanism 74 having the above-described configuration has the same length as the outer tube 121 and the wire 59 even when the length of the floor plate body 25 is changed, as in the first embodiment. Can be handled without changing.

According to the bed device of the second embodiment configured as described above, the head-up mechanism 75A rotates the movable arm 102 linearly with respect to the mounting arm 101, and in that state, the movable arm 102 is movable. When the arm 102 is non-rotatably locked by the lock mechanism 108, the central back portion 32 of the backfloor portion 31 is held in a state of being inclined forward as shown in FIGS. 12 (b) and 13 (b). be able to. At this time, the pair of side back portions 33 also incline integrally with the central back portion 32.

As a result, the inclined central back portion 32 can support the user's head in a raised state, so that the user can maintain a posture in which it is easy to eat, for example.

Further, the support shaft 105 that supports the operating member 104 is engaged with the elongated hole 106 of the back raising rail 53. Therefore, when the backfloor portion 31 is tilted forward in a state where the movable arm 102 is locked with respect to the mounting arm 101 by the locking mechanism 108, the length formed by the mounting arm 101 and the movable arm 102 is formed. The backfloor portion 31 is prevented from tilting forward beyond the dimension.

That is, not only can the backfloor portion 31 be tilted forward at a predetermined angle, but it is also possible to prevent it from being tilted too much.

On the other hand, when the lock state of the movable arm 102 is released by the lock mechanism 108, the central back portion 32 is held in a state of not being tilted forward as shown in FIGS. 12 (a) and 13 (a). .. At this time, the central back portion 32, that is, the back floor portion 31, is prevented from rattling in the direction of being inclined by the wire 59 even when an external force is applied.

Similar to the first embodiment, the side-up mechanism 74 positions the pressing member 66 at either the operating position or the non-operating position. Then, when the back floor portion 31 is raised, there is a state in which the back surface portion 33 is rotated while being pressed and rotated forward, and the side portion back portion 33 is not pressed without being rotated. Set to one of the states.

Therefore, when the backfloor portion 31 is driven in the rising direction, the head-up mechanism 75A and the side-up mechanism 74 can be set to be selectively operated. That is, since either one or both of the head-up mechanism 75A and the side-up mechanism 74 can be operated, it can be used in a state according to the user's request.

The head-up mechanism 75A rotates the movable arm 102 to the mounting arm 101 by the lock mechanism 108 regardless of whether or not the back-raising mechanism 37 is driven to raise the back floor portion 31. If the central back portion 32 is held in an impossible locked state, the central back portion 32 can be maintained in a forwardly inclined state.

In the first and second embodiments described above, a wire is used as a transmission member as a means for rotating the operating shaft when raising the back. As the transmission member, instead of the wire, the operating shaft can be rotated by a rotation drive source such as a transmission motor, and the rotation drive source is interlocked with the back-raising drive mechanism when the back-floor portion is raised. It may be operated by.

11 ... Main body frame part, 12 ... Adjustment frame, 15 ... Bed frame, 25 ... Floor plate body, 26 ... Fixed floor part, 27 ... First waist floor part, 28 ... Second waist floor part, 29 ... Connecting part, 31 ... Back floor, 32 ... Central back, 33 ... Side back, 35 ... First leg floor, 36 ... Second leg floor, 37 ... Back raising drive mechanism, 38 ... Drive, 56 ... Acting Shaft, 58 ... Arm (mounting member), 59 ... Wire (transmission member), 66 ... Pressing member, 69 ... Stopper member, 72 ... Mounting shaft, 73 ... Holding member, 74 ... Side-up mechanism, 75 ... Head-up mechanism, 76 ... Head-up guide, 79 ... Head-up roller, 81 ... First guide groove, 82 ... Second guide groove, 83 ... Positioning member, 84 ... Arm member, 86 ... Operating member, 101 ... Mounting arm, 102 ... Movable arm, 104 ... Actuating member (regulatory means), 110 ... Support shaft (regulatory means), 108 ... Lock mechanism, 112 ... Lock rod.

Claims (12)

Bed frame and
It has a fixed floor portion fixed to the bed frame, a central back portion, and a pair of side portion back portions connected to rotate forward on both sides of the central back portion so as to be rotatable with respect to the fixed floor portion. A floorboard body with a provided backfloor and
A back-raising drive mechanism that undulates and drives the back floor portion of the floor plate body,
An operating shaft rotatably supported on the back surface of the central back portion along the width direction of the central back portion.
The mounting member provided in the middle of this operating shaft and
One end is fixed to the mounting member, and the other end is fixed to a portion where tension is generated when the back floor portion is driven in the rising direction by operating the back raising drive mechanism, and the operation is performed by the tension. A transmission member that rotates the shaft in a predetermined direction,
When both ends of the operating shaft are provided so that the angle can be changed with respect to the circumferential direction of the operating shaft, the backbed portion is driven in the upright direction by the angle, and the operating shaft is rotated by the transmission member. The bed device is provided with a pressing member positioned at either an operating position for rotating the pair of side backs forward and a non-operating position for not rotating the side portion forward. Bed frame and
A floorboard body having a back floor portion consisting of a central back portion and a pair of side back portions connected so as to rotate forward on both sides of the central back portion.
A back-raising drive mechanism that undulates and drives the back floor portion of the floor plate body,
An operating shaft rotatably supported on the back surface of the central back portion along the width direction of the central back portion.
When both ends of the operating shaft are provided so that the angle can be changed with respect to the circumferential direction of the operating shaft, the backbed portion is driven in the upright direction by the angle, and the operating shaft is rotated, a pair of the above. A bed device including a pressing member positioned at either an operating position that rotates the back of the side portion forward and a non-operating position that does not rotate the side portion forward. One end of the mounting member is connected to the operating shaft and the other end is in the shape of an arm protruding outward in the radial direction of the operating shaft, and one end of the transmission member is connected to the other end of the mounting member. The bed device according to claim 1. The pressing member is provided on the operating shaft so as to be positioned at the operating position and the non-operating position by a positioning mechanism.
The positioning mechanism includes a support shaft that is rotatably and axially movablely inserted and supported at the end of the operating shaft, a stopper member provided at the tip of the support shaft, and an axis attached to the stopper member. A mounting shaft provided with the pressing member at the tip, which is provided at an angle with respect to the axis of the operating shaft.
When the backfloor portion is driven in the raised direction by the back-raising drive mechanism provided at the end of the operating shaft, the pressing member provided at the other end of the mounting member is positioned and held at the operating position. The bed device according to claim 1 or 2, wherein the bed device is composed of a holding member. The transmission member is provided so as to be adjustable in length, the bed frame is configured to be adjustable in length, and the length of the transmission member is set according to the length of the bed frame. The bed device according to claim 1. The feature is that the member constituting the mechanism for driving the side back portion of the backfloor portion forward when the backfloor portion is driven in the raised direction and the member constituting the back raising mechanism do not overlap. The bed device according to claim 1 or 2. Bed frame and
A fixed floor portion fixed to the bed frame, a waist floor portion rotatably provided with respect to the fixed floor portion, and a floor plate body provided with a back floor portion.
A back raising mechanism that undulates and drives the waist floor portion and the back floor portion of the floor plate body.
A head-up guide provided at the end of the back surface of the back floor on the side of the waist floor and having a first arcuate guide groove formed on the side surface.
A head-up rail having one end fixed to the waist floor portion and provided over the back surface side of the back floor portion and the waist floor portion.
One end is pivotally attached to the head-up guide, and the other end has a head-up roller rotatably engaged with the head-up rail, and the head-up roller is rolled along the head-up rail. A head-up arm that rotates with the head-up guide with one end as a fulcrum to rotate the back floor portion forward with respect to the waist floor portion.
A first position in which the end portion is provided so as to be inserted and supported by the first guide groove and the back floor portion is not rotated forward by the head-up arm when the end portion is located at one end of the first guide groove. It is characterized by including a positioning member that is selectively positioned at a second position where the backfloor portion is rotated forward by the head-up arm when it is located at the other end of the first guide groove. Bed equipment. On the side side of the head-up guide, an arc-shaped second guide groove is formed along with the first guide groove, and one end is pivotally attached to the side surface of the head-up guide and the other end is described. An arm member to which the ends of the positioning member are connected is provided.
The second guide groove is provided with an operating member that moves the positioning member between one end and the other end of the first guide groove by rotating the arm member. 7. The bed device according to claim 7. When the back floor portion is in an inverted state before being driven in the rising direction by the back raising mechanism, the positioning member is positioned at the second position located at the other end of the first guide groove. The bed device according to claim 7, wherein the backfloor portion can be tilted forward in conjunction with the raising of the backfloor portion by the back raising mechanism. Bed frame and
A floor plate body having a waist floor portion rotatably provided at one end on the bed frame and a back floor portion having one end rotatably connected to the other end of the waist floor portion.
With one end as a fulcrum, the other end is driven to rotate in the ascending direction from the state of being laid down, and the back raising arm provided with the back raising roller on the other end side and the one end portion are attached to the lower surface side of the waist floor portion. A back-raising drive mechanism having a back-raising rail in which the back-raising roller is rotatably engaged and driving the back-floor portion of the floor plate body in an undulating manner.
A head-up mechanism for rotating the back floor portion forward when the back floor portion of the floor plate body is driven in the rising direction by the back-raising drive mechanism is provided.
The head-up mechanism
An operating shaft that is rotatably supported on the back surface of the back floor portion with an axis along the width direction of the back floor portion.
A mounting arm with one end non-rotatably mounted on the working shaft,
A movable arm whose one end is rotatably connected to the other end of the mounting arm,
A lock mechanism that holds the movable arm non-rotatably with respect to the mounting arm and tilts the backfloor portion forward with the lower end as a fulcrum.
When the back floor portion is held at the other end of the movable arm so as to be movable along the other end portion of the back raising rail by the lock mechanism in a state of being inclined forward with the lower end as a fulcrum, the back floor A bed device characterized in that it is equipped with a regulatory means for limiting the angle at which the portion tilts forward. The back floor portion is configured to have a central back portion and a pair of side portion back portions connected to both sides of the central back portion so as to rotate only in the forward direction, and the back floor portion is raised by the back raising drive mechanism. It is equipped with a side-up mechanism that rotates the pair of side backs forward when driven in the direction.
The side-up mechanism
A transmission member that rotates the operating shaft in a predetermined direction when the back floor portion of the floor plate body is driven in the rising direction by the back raising drive mechanism.
When both ends of the operating shaft are provided so that the angle can be changed with respect to the circumferential direction of the operating shaft, the backfloor portion is driven in the upright direction by the angle, and the operating shaft is rotated by the transmission member. , A pressing member positioned at either an operating position that rotates the pair of side backs forward and a non-operating position that does not rotate forward.
10. The bed device according to claim 10 , wherein the bed device is configured by. The rising direction of the backfloor portion depends on whether or not the movable arm is integrated with the mounting arm by the lock mechanism and whether the pressing member is set to the operating position or the non-operating position. The bed device according to claim 11, wherein the head-up mechanism and the side-up mechanism can be selectively operated according to the drive to the bed device.

Images