JPH0653088B2 - Bed undulation mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Use) The present invention relates to a bed undulating mechanism of a bed, in particular, a back floor plate, a waist floor plate and a foot floor plate supported on a floor support frame are undulated to allow a user on the floor plate. Has the function of being able to take the position of Gatch, reclining or chair, and in the above-mentioned condition, has the function of lifting the waist floor plate as necessary to assist the user to stand up from the bed. The present invention relates to a bed undulation mechanism.

(Prior Art) In a conventional bed, a back floor board, a waist floor board, and a foot floor board supported on a floor support frame are undulated so that the posture of the user on the floor board may be a gatch posture, a reclining posture, or a chair-like posture. There is a couch that can be used for the above, and a couch that has a function of assisting the standing up of the user from the couch by lifting the waist floor plate as necessary in the above conditions. A drive source is provided for each function.

(Problems to be Solved by the Invention) When a drive source such as an electric motor is provided for each function, the number of drive systems increases, the required space increases, the weight increases, and the price increases. .

The present invention is intended to solve the above problems.

(Means for Solving the Problems) The means for solving the above problems will be described with reference to the drawings showing the embodiments. The bed undulating mechanism of the bed according to the present invention includes a bed support frame 2 for the bed. , A back floor plate 3a supported on the floor support frame 2, a waist floor plate 3b, and a foot floor plate 3c. The back floor plate 3a rotatably supports one side on the floor support frame 2 and a waist portion. The floorboard 3b and the foot floorboard 3c are flexibly connected, and the waist floorboard 3b is connected near the connecting position c.
The first support arm 4 on the side, and the second support arm 5 on the side of the foot floor plate 3c
The floor support frame 2 rotatably supports the drive shaft 12 in the width direction on the back side and the first and second operating shafts 13 and 14 in the width direction on the foot side. The drive shaft 12 is provided with a first push-up arm 15 and first, second, and third drive arms 16, 17, and 18 projecting from the drive shaft 12, and the tip end of the first push-up arm 15 is pushed up by a push-up link. A first interlocking arm 20 is connected to the back floor plate 3a via
And a first actuating arm 21 projectingly, the first interlocking arm 20 and the first drive arm 16 are connected by a first drive link 22, and the second actuating shaft 14 is provided with a second Second drive link 26 that is formed between the second interlocking arm 23 and the second drive arm 17 by projecting the interlocking arm 23 and the second push-up arm 24.
Is rotatably connected to the second interlocking arm 23, and is provided with an engagement groove 27 on the second drive arm 17 side so as to be engageable with and disengageable from a drive protrusion 28 provided on the second drive arm 17. In addition, the engaging / disengaging means A is provided on the floor support frame 2, and the abutting portion 25 to the waist floor plate 3b is provided at the end of the second push-up arm 24. A support rail 6 having a long groove 29 is provided from above the back side to below the foot side, and the other end of a first support link 30 having one end rotatably connected to the first support arm 4 is provided with the long groove. 29, the distal end portion of the first actuating arm 21 is rotatably supported at the intermediate portion of the first supporting link 30, and one end is connected to the second supporting arm 5. The other end of the second support link 31 is rotatably supported by a support member 32 provided on the floor support frame 2, and the third drive arm 8 and the floor supporting frame 2 supporting member 32
The expansion / contraction driving means 33 is provided between them.

In the above configuration, on the lower back side of the waist floor plate 3b,
A contact support member 8 can be provided at a proper position of the floor support frame 2, and the contact support member 8 is composed of a roller, and
This roller can be configured to abut the support rail 6.

Further, in the above structure, the engagement / disengagement means A moves the second drive link 26 by the linear drive mechanism to engage the engagement groove 27 with the drive protrusion 28 of the second drive arm 17. It is possible to adopt a configuration in which the state in which it is turned on is shifted to the state in which it is not engaged. The expansion / contraction driving means 33 may be a motor-driven screw shaft expansion / contraction drive.

Further, in the above configuration, the foot floor plate 3c may be configured such that a part of the end side is rotatably connected only upward.

Further, in the above configuration, the floor support frame 2 may be supported on the base 1 so as to be adjustable in height, or may be configured to support the base 1 also in a fixed height type.

(Operation) First, in a state where each floor plate is supported on a plane as shown in FIGS. 1 (a) and 3 (a), the engagement / disengagement means A is operated to perform the second drive. The link 26 is moved so that the engagement groove 27 thereof does not engage with the drive projection of the second drive arm 17, and the telescopic drive means 33 is operated in this state to drive the drive shaft via the third drive arm 18. When the drive shaft 12 is turned, the first push-up arm 15 is turned up by the turn of the drive shaft 12, and the back floor plate 3 a is turned up via the push-up link 19. By the rotation of the drive shaft 12, the first drive arm 16,
Since only the first actuating shaft 13 is interlocked and rotated via the first drive link 22 and the first interlocking arm 20, the first actuating arm 21, the support rail 6, and the first supporting link 30 are rotated. Due to the interaction, the first support arm 4, that is, the foot side of the waist floor plate 3b moves to the upper right in the figure. Since the back side of the waist floor plate 3b is in a free state, it is supported by contacting with the upper side of the proper place of the floor support frame 2, so that the waist floor plate 3b is inclined so that the foot side is the upper side and the back side is the lower side. On the other hand, as described above, the waist floor plate 3b
When the foot side of the foot part 3c moves to the upper right in the figure, the fixed part floor plate 3c flexibly connected to the waist part floor plate 3b also rises.
By the action of the above, it is supported in a state of being rotated and lowered with the connecting position c as a fulcrum.

In this way, as shown in FIGS. 1 (b) and 3 (b), the back floor plate 3a is pivotally raised, and at the same time, the waist floor plate 3
b turns downward with the foot side as the upper part, and the foot floor plate 3c
By rotating and lowering with the end portion side downward, the user on the floor plate can be placed in the Gatch posture, the reclining posture, or the chair-like posture. As described above, when the waist floor plate 3b is rotated and lowered as the back floor plate 3a is rotated and raised, the waist floor plate 3b moves in the foot side direction, so that the abdomen of the user is not pressed.

Next, in a state where each floor plate is supported on a plane as shown in FIGS. 1 (a) and 3 (a), the engagement / disengagement means A is operated to operate the second drive link 26. Is moved to bring the engagement groove 27 into engagement with the drive projection of the second drive arm 17, and in this state the expansion / contraction drive means 33 is operated to move the drive shaft 12 via the third drive arm 18. When rotated, this time, together with the above-mentioned first operating shaft 13, the second drive arm 17,
The second actuating shaft 14 is also interlocked to rotate via the second drive support link 26 and the second interlocking arm 23. Therefore, as described above, the back floor plate 3a is pivotally raised, and the foot side of the waist floor plate 3b moves to the upper right in the figure, and at the same time as shown in FIG. 1 (c),
As shown in FIG. 3 (c), the second push-up arm 24 pivotally rises to push up the waist floor plate 3b, and the waist floor plate 3b pivotally moves around the connecting position c with the foot floor plate 3c as a fulcrum. .

Therefore, the user on the floor is lifted up by the waist floor plate 3b to the front side, and is assisted to stand up from the bed.
At this time, if the foot floor plate 3c has a structure in which a part of the end side is rotatably connected only upward, the foot floor plate 3c has its front end in a floor of a room or the like during the turning down. When it touches, it automatically bends and the length of the foot floor plate 3c is substantially shortened, so that the foot of the user can be reliably brought to the floor surface.

(Example) Next, the Example of this invention is described about figures.

1 (a), (b), and (c) schematically show the structure and operation of a bed to which the floor undulating mechanism of the present invention is applied, and FIG. 2 is based on the floor undulating mechanism of the present invention. The table 1 is omitted, and FIGS. 3 (a), 3 (b), and 3 (c) show the essential parts of the floor undulating mechanism of the present invention. In these figures, reference numeral 1 is a base, 2 is a floor support frame, 3a, 3b and 3
Reference characters c denote a back floor board, a waist floor board, and a foot floor board, respectively. In this embodiment, the height of the floor support frame 22 can be adjusted on the base 1 by an appropriate elevating mechanism and tilting mechanism (not shown), but the floor support frame 2 also serves as the base 1. A fixed height can also be used as the configuration.

Then, the back floor plate 3a rotatably supports one side on the floor support frame 2, and the waist floor plate 3b and the foot floor plate 3c are flexibly connected, and the waist floor plate 3b is connected near the connection position c. The first support arm 4 is provided on the side, and the second support arm 5 is provided on the side of the foot floor plate 3c. The back floor plate 3a is supported by a support member 7 at the same position as one end of a support rail 6 described later. In addition, a contact support member 8 is provided below the waist floor plate 3b on the back side of the floor support frame 2 in an appropriate position. The contact support member 8 is composed of a roller, and the roller contacts the support rail 6 described later.
In addition, the foot floor plate 3c rotatably supports only a portion 3d on the end side only upward. That is, the part 3d is flexibly connected to the other part, and also connects the support link 10 between the support members 9a and 9b provided on the lower side. As described above, the floor support frame 2 rotatably connecting and supporting the part 3d only upward as described above has the drive shaft 12 in the width direction on the back side and the first in the width direction on the foot side. The first and second actuating shafts 13 and 14 are rotatably supported, and the drive shaft 12 has a first push-up arm 15 and first, second and third drive arms 16, 17, and 18.
And project the other end of the first push-up arm 15 to push-up link 1
The first interlocking arm 20 and the first interlocking arm 21 are connected to the back floor plate 3a via the first interlocking member 9 and project from the first interlocking arm 20. The drive arms 16 of are connected by a first drive link 22. The second operating shaft 14 has a second interlocking arm 23 and a second push-up arm 2
4 is projected. A contact portion 25 for the waist floor plate 3b is provided at the end of the second push-up arm 24.
Reference numeral 5 is a roller. A second drive link 2 formed between the second interlocking arm 23 and the second drive arm 17.
6 is rotatably connected to the second interlocking arm 23, and
An engagement groove 27 is provided on the side of the second drive arm 17 so that it can be engaged with and disengaged from a drive protrusion 28 provided on the second drive arm 17. The engagement / disengagement means A is provided on the floor support frame 2. The engagement / disengagement means A is omitted in FIGS. 1 to 3. The engagement / disengagement means A moves the second drive link 26 by a linear drive mechanism, that is, moves in the vertical direction in the figure in the illustrated example, so that the engagement groove 27 is moved to the second drive arm 17.
The driving projection 28 is engaged and disengaged. Such a linear drive mechanism may be configured to perform linear displacement using a solenoid as a drive source, a screw shaft type telescopic drive mechanism driven by a small motor, or a control cable mechanism. The figure shows a screw shaft type telescopic drive mechanism driven by a small motor. This embodiment and the configuration using the control cable mechanism have an advantage that the operation sound is quieter than that of the mechanism using the solenoid.

The floor support frame 2 is provided with a support rail 6 in which a long groove 29 is formed from above the back side to below the foot side, and a first support link whose one end is rotatably connected to the first support arm 4. Thirty
The other end side of the first operating arm 21 is movably supported in the long groove 29, and the tip end portion of the first operating arm 21 is supported by the first supporting link 30
The other end of the second support link 31 having one end connected to the second support arm 5 while being rotatably supported in the middle part of
It is rotatably supported by a support member provided on the floor support frame 2.

An expansion / contraction drive means 33 is provided between the third drive arm 18 and the support member of the floor support frame 2, and the expansion / contraction drive means 33 is a motor-driven screw shaft expansion / contraction drive.

In the above construction, first, the engagement / disengagement means A is operated while the respective floor plates are supported on a plane as shown in FIGS. 1 (a) and 3 (a). When the second drive link 26 is moved upward, the engagement groove 27 is not engaged with the drive protrusion 28 of the second drive arm 17. In this state, when the expansion / contraction driving means 33 is operated to rotate the drive shaft 12 in the clockwise direction in the figure via the third drive arm 18, the rotation of the drive shaft 12 causes the first push-up arm 15 to rotate. Ascending, the back floor plate 3a is pivotally raised via the push-up link 19. Due to the rotation of the drive shaft 12, only the first operation shaft 13 is interlocked and rotated via the first drive arm 16, the first drive link 22, and the first interlocking arm 20. Operating arm 21, support rail 6 and first support link 30
By the interaction of the first support arm 4, that is, the waist floor plate 3b.
Foot side moves to the upper right in the figure. Since the back side of the waist floor plate 3b is in a free state, the roller as the contact support member 8 abuts and is supported on the upper side of the support rail 6, and therefore the waist floor plate 3b is inclined with the foot side upward and the back side downward. On the other hand, as the foot side of the waist floor board 3b moves to the upper right in the figure as described above, the foot floor board 3c flexibly connected to the waist floor board 3b also rises, so that the foot floor board 3c By the action of the second support link 31, is supported in a state of being rotated and lowered clockwise with the connection position c as a fulcrum.

In this way, as shown in FIGS. 1 (b) and 3 (b), the back floor plate 3a is pivotally raised, and at the same time, the waist floor plate 3
b turns downward with the foot side as the upper part, and the foot floor plate 3c
By rotating and lowering with the end portion side downward, the user on the floor plate can be placed in the Gatch posture, the reclining posture, or the chair-like posture. As described above, when the waist floor plate 3b is rotated and lowered as the back floor plate 3a is rotated and raised, the waist floor plate 3b moves in the foot side direction, so that the abdomen of the user is not pressed.

Next, in a state where each floor plate is supported on a plane as shown in FIGS. 1 (a) and 3 (a), the engagement / disengagement means A is operated to operate the second drive link 26. Is moved downward, and the engagement groove 27 thereof moves the drive protrusion 28 of the second drive arm 17.
In this state, the expansion / contraction drive means 33 is operated to rotate the drive shaft 12 via the third drive arm 18. This time, the engagement groove 27 of the second drive link 26 and the drive protrusion 28 of the second drive arm 17 are engaged, so that the second drive arm 17, the second drive arm 17, and the second drive arm 17 as well as the first actuating shaft 13 described above are engaged. The second actuating shaft 14 also interlocks with the drive link 26 and the second interlocking arm 23 to rotate. Therefore, as described above, the back floor plate 3a is pivotally raised, and the foot side of the waist floor plate 3b moves to the upper right in the figure, and at the same time, as shown in FIGS. 1 (c) and 3 (c), the second push-up is performed. The arm 24 pivots upward to move the waist floor plate 3
b is pushed up, and the waist floor plate 3b is rotated and raised with the connection position c with the foot floor plate 3c as a fulcrum.

Therefore, the user on the floor is lifted up by the waist floor plate 3b to the front side, and is assisted to stand up from the bed.
When the foot floorboard 3c gradually descends in this way, and when the tip portion of the foot floor plate 3c contacts the floor surface of a room, etc., the foot portion floor plate 3c automatically bends relatively upward. Since the length of the foot floor plate 3c is substantially shortened, the user's foot can be reliably brought to the floor surface. As described above, in the present invention, a drive source such as an electric motor is used as the engagement / disengagement means A. This drive source simply moves the second drive link 26 described above. All that is required is that it does not have to withstand a large load, so a small capacity is sufficient,
Therefore, there is no significant effect on the required space of the mechanism, the increase in weight and the price.

(Effect of the invention) As described above, the present invention provides a back floor board supported on a floor support frame,
The waist floorboard and the foot floorboard are undulated so that the posture of the user on the floorboard can be a gatch posture, a reclining posture, or a chair-like posture. Despite having both the function of assisting the start-up, these drive sources are configured as a single unit and the drive system is minimized, so the space required is small, the weight is light and the price is low. There is an effect that can be done.

[Brief description of drawings]

1 (a), (b) and (c) are explanatory side views schematically showing the structure and operation of a bed to which the floor undulating mechanism of the present invention is applied, and FIG. 2 is the floor undulating mechanism of the present invention. 3 is an explanatory perspective view in which the base 1 is omitted, and FIGS. 3A, 3B, and 3C are explanatory side views showing the configuration and operation of the main part of the floor undulating mechanism of the present invention. , FIG. 4 is an explanatory perspective view showing an example of the engaging / disengaging means. Reference numeral 1 ... Base, 2 ... Floor support frame, 3a ... Back floor board,
3b ...... waist floorboard, 3c ...... foot floorboard, 3d ... part,
4 ... 1st support arm, 5 ... 2nd support arm, 6 ... Support rail, 7 ... Support member, 8 ... Contact support member, 9a,
9b ... Support member, 10 ... Support link, 11 ... Long groove, 12 ... Drive shaft, 13 ... First operating shaft, 14 ...
2nd actuation axis, 15 ... 1st push-up arm, 16 ... 1st drive arm, 17 ... 2nd drive arm, 18 ... 3rd drive arm, 19 ... Pushup link, 20 ... … First interlocking arm, 21
... first actuating arm, 22 ... first drive link, 23 ...
... second interlocking arm, 24 ... second push-up arm, 25 ... abutting portion, 26 ... second drive link, 27 ... engaging groove, 28
...... Drive protrusion, 29 ...... long groove, 30 ...... first support link, 31 ...... second support link, 32 ...... support member, 3
3 ... Expansion / contraction drive means, A ... Engagement / disengagement means.

Claims (11)

[Claims] 1. A bed support frame for a bed, and a back floor plate, a waist floor plate, and a foot floor plate supported on the floor support frame. The back floor plate is rotatably supported on one side thereof on the floor support frame. In addition to supporting, the waist floor plate and the foot floor plate are flexibly connected, and in the vicinity of this connecting position, a first support arm is provided on the waist floor plate side and a second support arm is provided on the foot floor plate side. At the same time, the floor support frame rotatably supports the drive shaft in the width direction on the back side and the first and second actuating shafts in the width direction on the foot side. An arm and first, second, and third drive arms are provided so as to project, and the tip end portion of the first push-up arm is connected to the back floor plate via a push-up link, and the first actuating shaft has a first One interlocking arm and a first actuating arm are provided so as to project, the first interlocking arm and the first drive arm are connected by a first drive link, and the second actuating shaft is A second interlocking arm and a second push-up arm are provided in a protruding manner, and a second drive link formed between the second interlocking arm and the second drive arm is rotatably connected to the second interlocking arm. In addition, an engaging groove is provided on the side of the second drive arm so that the drive projection provided on the second drive arm can be engaged and disengaged, and the engaging and disengaging means is provided on the floor support frame. The end of the second push-up arm is provided with an abutting portion against the waist floor plate, and the floor support frame is provided with a support rail having a long groove from above the back side to below the foot side, and the first support is provided. The other end of the first support link, one end of which is rotatably connected to the arm, is movably supported in the long groove, and the other end of the first operating arm is an intermediate part of the first support link. And the other end of the second support link whose one end is connected to the second support arm is rotatably supported by a support member provided on the floor support frame. Lifting, and the third drive arm and the floor supporting frame of the supporting member the bed floor undulations mechanism, characterized in that a telescopic drive means between 2. A support member for abutting the floor support frame at an appropriate position is provided below the back side of the waist floor plate.
Bed undulation mechanism described 3. The bed undulating mechanism for a bed according to claim 2, wherein the contact support member is a roller, and the roller is in contact with the support rail. 4. The engagement / disengagement means moves the second drive link by a linear drive mechanism to bring the engagement groove into a state in which the second drive arm is engaged with the drive projection and a state in which the engagement groove is not engaged. The bed undulating mechanism of the bed according to claim 1, wherein the bed undulating mechanism is configured to shift. 5. The bed undulating mechanism for a bed according to claim 4, wherein the linear drive mechanism is configured to perform linear displacement using a solenoid as a drive source. 6. The bed undulating mechanism for a bed according to claim 4, wherein the linear drive mechanism is constituted by a screw shaft type telescopic drive mechanism driven by a small motor. 7. A bed undulating mechanism for a bed according to claim 4, wherein the linear drive mechanism is constituted by a control cable mechanism. 8. The bed undulating mechanism for a bed according to claim 1, wherein the extension / contraction drive means is a motor-driven screw shaft type extension / contraction drive. 9. The bed undulating mechanism for a bed according to claim 1, wherein the foot floor plate rotatably supports a part of an end side only rotatably upward. 10. The bed undulating mechanism for a bed according to claim 1, wherein the floor support frame is supported on a base in a height-adjustable manner. 11. A bed undulating mechanism for a bed according to claim 1, wherein the floor support frame also serves as a base and is fixedly supported.