JP2003275061A - Bed - Google Patents

Abstract

(57) [Problem] To provide a bed capable of satisfactorily reducing pressure on the abdomen at the time of raising his / her back and having less displacement of the body such as the upper body. SOLUTION: When moving a back bottom 11 from a horizontal posture to a back raising posture, the back bottom 1 is moved in the back raising posture.
A back raising mechanism for moving a lower end portion of the first bottom in a substantially horizontal direction on the head side, and a waist bottom 12 linked to the movement of the back bottom 11 when the back bottom 11 is moved from the horizontal posture to the back raising posture. And an interlocking mechanism for moving the head in a substantially horizontal direction on the head side. As a result, when raising the back, not only can the pressure on the abdomen a of the person be reduced satisfactorily, but also the back can be lifted while the waist d is pulled toward the bed 1 and the upper body can be lifted. Can be prevented from being displaced, and as a result, the back-raising operation can be performed easily and stably.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bed, and more particularly to a bed having a back raising function.

[0002]

2. Description of the Related Art As a conventional bed structure having a back raising function, as shown in FIGS. 13 (a) and 13 (b), the bed bottom includes a back bottom 101 on which a person's back is placed and a person's back. The lower half body bottom 102 on which the waist and legs are placed is divided into two, and one support rotary shaft 1 provided at the boundary between them.
13 is the center of the back bottom 102 from the horizontal posture as shown in FIG. 13 (a), as shown in FIG. 13 (b).
There is a structure that can be rocked so as to have a back-raising posture in which the part near the head is inclined upward.

However, in this conventional bed structure, when the back is raised, the portion corresponding to the abdomen a of the person is displaced so as to be contracted, so that the abdomen a is pressed.

As a conventional technique for dealing with this, as shown in FIGS. 14 (a) and 14 (b) in Japanese Patent Application Laid-Open No. 2-60609 and Japanese Patent Application Laid-Open No. 7-16263, the back part is raised when the back is raised. A structure is disclosed in which the bottom end side of the bottom 101 in the back-raising posture is slid toward the head side (H direction) so as to be slightly separated from the lower body bottom 102. According to this type of structure, the distance between the back b and the leg c of the person is widened when raising the back, so that the pressure on the abdomen a can be reduced.

[0005]

However, as shown in FIG.
As shown in (a) and (b), when the back is raised, the back bottom 1
In the conventional structure in which the lower end side of 01 is slid in the substantially horizontal direction on the head side (H direction) so as to be slightly separated from the lower body bottom 102, when the back is raised, the ground contact point of the waist d of the person is at the back bottom 101. Since it does not follow the lower part, the person's waist d and legs c stay in the position before raising the back, and there is a gap x between the ground contact point on the person's back b and the bed, and There is a problem that the part extending from the waist portion d to the back portion b is lifted from the bed, and the upper body is displaced.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a bed which can satisfactorily reduce pressure on the abdomen when raising the back and which does not cause displacement of the body such as the upper half of the body. It is what

[0007]

In order to solve the above problems, a bed according to claim 1 of the present invention has a back bottom for holding a person's back, and the back bottom has a substantially horizontal horizontal posture. , The back bottom is tilted so that the part of the back bottom that holds the part close to the head of the person is upward, and the back bottom is raised when the back bottom is moved from the horizontal position to the back position. A back raising mechanism that moves a lower end portion of the back bottom in a posture in a substantially horizontal direction on the head side, a waist bottom for movably supporting a substantially horizontal direction, and a waist bottom for holding a person's waist, and the waist bottom. Connected,
When the back bottom is moved from the horizontal posture to the back raising posture, a linkage mechanism for moving the waist bottom in a substantially horizontal direction on the head side is interlocked with the movement of the back bottom.

According to this structure, when the back bottom is moved from the horizontal posture to the back raising posture to raise the back, the lower end portion of the back bottom is moved substantially horizontally in the head side by the back raising mechanism. Not only is it possible to reduce the pressure on the abdomen of the person satisfactorily, but at this time, the waist bottom that supports the waist, which is mainly subject to the weight of the upper body of the person, is interlocked in a substantially horizontal direction on the head side by the interlocking mechanism. As it is moved, the person's lower back moves along with the lower back along with the lower part of the lower back, and as a result, the lower back is raised while pulling the lower back toward the bed side. It is possible to prevent the occurrence of the deviation.

According to a second aspect of the present invention, in the bed according to the first aspect, the main frame is provided substantially horizontally, and the back raising mechanism is connected to the main frame or a member coupled to the main frame. When moving the back bottom from the horizontal posture to the back raising posture, the back bottom supporting arm that supports the lower end portion of the back bottom in the back raising posture so as to be movable substantially in the head side, and the back bottom supporting arm. And a push-up arm that pushes up the back bottom supported by the arm.

According to this structure, the back bottom is favorably supported by the main frame and the back bottom support arm, and in this state, when the back is raised, the back bottom is pushed up.

According to a third aspect of the present invention, in the bed according to the second aspect, one end of the back bottom support arm is rotatably attached to the main frame, and the other end is rotatable with respect to the back bottom. It is characterized by being two pairs of arms that are freely supported.

According to this structure, when the back bottom is moved from the horizontal posture to the back raising posture to raise the back, the lower bottom portion of the back bottom is moved toward the head side by the back bottom supporting arm composed of two pairs of arms. It is moved well in a substantially horizontal direction.

The invention according to claim 4 is the invention according to claim 2 or 3.
In the bed described in (1), the interlocking mechanism connects the waist bottom to the back bottom, and the waist bottom is connected to the head side by interlocking with the movement of the lower end of the back bottom in the back-up posture in a substantially horizontal direction. It is characterized in that an interlocking arm that moves in a substantially horizontal direction is provided.

According to this structure, when the back bottom is moved from the horizontal posture to the back raising posture to raise the back, the waist bottom is interlocked with the movement of the back bottom supporting arm by the interlocking arm, and the head side substantially in the horizontal direction. Be moved to.

The invention according to claim 5 is the invention according to claim 2 or 3.
In the bed described in (1), the interlocking mechanism is provided with an interlocking arm that connects the waist bottom to the push-up arm and moves the waist bottom in a substantially horizontal direction on the head side in conjunction with the movement of pushing up the back bottom of the push-up arm. It is characterized by

According to this structure, when the back bottom is moved from the horizontal posture to the back raising posture to raise the back, the waist bottom is moved in the substantially horizontal direction on the head side in association with the movement of the pushing arm by the interlocking arm. To be done.

According to a sixth aspect of the invention, in the bed according to any one of the first to fifth aspects, for holding the thigh of a person by adjoining the bottom of the waist with or without a member. The leg bottom is provided with a leg lifting mechanism for inclining one end of the waist bottom side downward and the other end obliquely upward.

According to this structure, the back raising operation and the leg raising operation can be performed in parallel. According to a seventh aspect of the invention, in the bed according to any of the first to sixth aspects, the push-up arm is driven by the driving force of a driving source electrically driven.

According to this construction, it is possible to construct a bed which is electrically driven and fits well to a person when raising the back.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. Here, FIG. 1 is an overall perspective view of a bed according to an embodiment of the present invention, FIG. 2 (a) is an overall plan view of the bed seen from above, (b) is a left side view of the bed, and FIG. (A)-(d) is a side view which respectively shows the state which used the same bed roughly, (a) shows the movement of a bed roughly, (b) shows the state where a back bottom is a horizontal posture. In the figure, (c) shows a state in the middle of the back-raising operation, and (d) shows a state after the back-raising operation is completed. In reality, a mattress is laid between the bed and the person. In the figure, the mattress is omitted in order to clearly show the relationship between the bed and the person. 4 (a) and 4 (b) are side views showing the waist bottom and back bottom of the same bed and the vicinity thereof, respectively.
(A) shows the back bottom in a horizontal position,
(B) shows a state in which the back bottom is in a back-raising posture. Further, FIG. 5 is a plan view of the waist bottom and back bottom of the same bed and the main parts in the vicinity thereof as seen from above (showing a state in which the back bottom is in a horizontal posture), and FIGS.
6 is a schematic front view of the same bed as shown in FIG.
4A is a front view seen from the arrow line AA in FIG. 4A, FIG. 6B is a front view seen from the arrow line AI in FIG. 4A, and FIG. 4) is a front view seen from the arrow line W-U in FIG. FIG. 7 is a perspective view showing the drive unit of the bed, and FIGS. 8 (a) and 8 (b) are side views showing the first and sub leg bottoms of the bed and the vicinity thereof, respectively. The first and sub leg bottoms are in a horizontal posture, and (b) shows the first and sub leg bottoms in a leg up posture.

As shown in FIG. 1, a bed 1 includes a main frame 2 which is an outer frame which is provided substantially horizontally and has a rectangular shape in a plan view, and a support base 3 which supports the main frame 2.
And the bottom 4 that actually holds people and the mainframe 2
Of the headboard 5, which is erected from the head-side end when the person lies on the bottom 4, and the main frame 2, which is erected from the leg-side end when the person lies on the bottom 4. Foot board 6 and side rails 7 standing from one side of the main frame 2.
And an operation unit 8 having a plurality of push buttons and the like for performing a back raising operation and a leg raising operation.

In the following description of the embodiment, a substantially horizontal direction substantially along the main frame 2 from the lower end of the footboard 6 to the lower end of the headboard 5 is set to the head side substantially horizontal direction. On the contrary, a substantially horizontal direction from the lower end portion of the headboard 5 toward the lower end portion of the footboard 6 along the main frame 2 is called a substantially leg side horizontal direction (F direction). Note that the direction is not necessarily limited to the position of the lower end of the footboard 6 or the lower end of the headboard 5.

As shown in FIGS. 1 to 3, the bottom 4
Is a back bottom 11 for holding a person's back b, a waist bottom 12 for holding a person's waist d (including a person's waist and buttocks), and legs for holding a person's thighs. It is divided into a part bottom 13 and a sub leg bottom 14 for holding a person's calf part and the like.
2, 13, 14 have inner frame portions 11a, 12a,
13a and 14a and the net unit 11 that actually holds a person
b, 11c, 12b, 13b, 14b and the like are provided. Further, a lateral frame portion 11d and a net connecting plate portion 11f are also provided on the back bottom portion 11 near the waist bottom portion 12. Here, the waist portion d is a person's waist, buttocks, or the like.

The bed 1 is provided with a back bottom 11,
A substantially horizontal horizontal posture as shown in FIG.
As shown in (d), the back bottom 11 is changed from a horizontal posture to a back raising posture by changing the back bottom 11 so that the portion holding the portion of the back bottom 11 near the head of the person is inclined upward. When it is moved to the back position, a portion (hereinafter, simply referred to as a lower end) 11f, which is a lower end of the back bottom 11 in the back-raising posture, is substantially horizontal in the head side (H shown in FIG. 3C).
Direction), a back raising mechanism 20 and a waist bottom 12
When the back bottom 11 is moved from the horizontal position to the back-raising position, the waist bottom 12 is moved along the movement of the back bottom 11 to move the waist bottom 12 in a substantially horizontal direction on the head side (H direction shown in FIG. 3C). 3B shows an interlocking mechanism 40 for moving the back bottom 11 in a horizontal posture and a back raising posture as a drive source for driving the back bottom 11 in a horizontal posture and a leg bottom 13. As shown in FIG. 3 (d), such a substantially horizontal posture, and a portion for holding a portion of the leg bottom 13 near the person's shin, with one end on the waist bottom 12 side facing down (here, A leg raising mechanism 60 that reciprocates in a leg raising posture that is inclined so that the other end) is upward, and a leg raising drive unit 70 as a drive source that drives the leg bottom 13 in a horizontal posture and a back raising posture. And It has been kicked. In addition, this bed 1
In order to facilitate transportation and the like, the main frame 2 includes a portion close to a person's head (a portion where the back bottom 11 and the waist bottom 12 are provided) and a portion close to a leg (leg bottom 13, first part). It is divided into two parts, that is, the part where the two leg bottoms 14 are provided), and has a structure that can be integrally connected at the time of assembly.

As shown in FIGS. 4 to 6, the back raising mechanism 20 is provided.
Has a pair of hinge mounting plates 21, first and second back bottom support arms 26 and 27, a back raising shaft 28, a driving force transmitting arm 31, and a pushing arm 30.

The hinge mounting plates 21 are fixed to both sides of the back bottom 11 of the main frame 2 near the waist bottom 12, and extend inside (the back bottom 11 side) and bent so as to hang down. (Fig. 6 (a),
(See (b)).

The lower ends of the first and second back bottom support arms 26 and 27 are attached to the hinge mounting plate 21 via the lower rotation supporting shafts 22 or 23 which are attached to the hinge mounting plate 21. It is rotatably supported. First,
The upper ends of the second back bottom support arms 26, 27 rotate to the lower end 11f via the upper rotation support shafts 24 or 25 attached to the lower end 11f of the back bottom 11 in the back raising posture. The upper rotation support shaft 24 is rotatably supported, and the upper rotation support shaft 24 is centered around the lower rotation support shaft 22.
Direction, the upper rotation support shaft 25 becomes the lower rotation support shaft 2
By moving in the R2 direction about 3 as a center, the back bottom 11 is movably supported from the horizontal posture to the back raising posture, and has a substantially V shape.

The back-raising shaft 28 is laid between the pair of hinge mounting plates 21 at a position closer to the head side in the horizontal direction than the place where the lower rotation supporting shafts 22 and 23 are provided, and forms a pair. It is rotatably attached to the hinge attachment plate 21.

Further, the driving force transmitting arm 31 is fixed to the back raising shaft 28 and is driven by the back raising driving unit 50 to rotate with the back raising shaft 28 as an axis together with the back raising shaft 28.

The push-up arm 30 includes the back-raising shaft 2
One end of the push-up roller 2 is fixed to one side of the push-up roller 2, and the push-up roller 2 is attached to the other end of the back-up shaft 28 as the back-raising shaft 28 rotates.
9 is brought into contact with the inner frame portion 11a of the back bottom 11 from below to push up the back bottom 11.

Here, when the back bottom 11 takes a horizontal posture which is a substantially horizontal posture, a first back bottom support arm 26 for supporting a portion to be the lower end 11f of the back bottom 11 in the back raising posture, Lower end 1 of back bottom 11
The following positional relationship is provided with the second back bottom support arm 27 that supports a portion slightly closer to the head side than 1f. Although the first back bottom support arm 26 and the second back bottom support arm 27 have almost the same arm length, the second back bottom support arm 27 is more than the first back bottom support arm 26. It is said to be in a lying posture (a posture with a small inclination angle with respect to the horizon). Also, the first
The lower rotation support shaft 22 of the second back bottom support arm 27 is disposed at a slightly higher position than the lower rotation support shaft 22 of the back bottom support arm 26 of FIG. It may be in a lower position.

Therefore, when the first back bottom support arm 26 is rotated in the direction R1 from the state shown in FIG. 4A, the upper end of the lower back support arm 26 is located above the lower rotation support shaft 22 that supports the lower end 11f. Rotation support shaft 24 for supporting the portion
The upper rotation support shaft 24 gradually rises up to, and after the upper rotation support shaft 24 reaches a position above the lower rotation support shaft 22, the upper rotation support shaft 24 rotates while descending.

On the other hand, the second back bottom support arm 27
In the state shown in FIG. 4 (a), is in a position lying further than the first back bottom support arm 26, so that when it starts to rotate in the R2 direction, it rotates while moving relatively upward. . Therefore, when the first and second back bottom support arms 26, 27 are rotated in the R1 direction and the R2 direction from the state shown in FIG. 4A, the upper rotation support shaft 24 of the first back bottom support arm 26 is rotated. Rotates so as to move in a substantially horizontal direction (H direction) more than the vertical movement distance, and the upper rotation support shaft 25 of the second back bottom support arm 27 moves in a substantially horizontal direction (head direction). It rotates so as to rise more than the moving distance in the H direction.

As a result, as the first and second back bottom support arms 26 and 27 rotate in the R1 and R2 directions, the first and second back bottom support arms 26 and 27 are tilted to the back-up posture as shown in FIG. The lower end portion 11f of the first back bottom support arm 26 moves in the substantially horizontal direction on the head side (H direction).

2 (a), 2 (b) and 4
As shown in (a), when the back bottom 11 is in the horizontal posture, the push-up roller 29 of the push-up arm 30 is separated from the back bottom 11 and is not receiving the force from the push-up arm 30. Then, the rubber first stopper body 32 attached to the back bottom 11 near the waist bottom 12 abuts on the hinge attachment plate 21 (see FIG. 6).
(See (c)), and the first regulating rod 3 hung over a portion of the main frame 2 near the headboard 5.
The second stopper body 34 attached to 3 abuts on a part of the back bottom 11 on the side that holds the head of the person when the person lies on the bottom 4, thereby bringing the back bottom 11 into a horizontal position. Configured to hold.

The driving force transmission arm 31 that pushes up the push-up arm 30 by rotating integrally with the push-up arm 30 is driven by the back raising drive unit 50.

As shown in FIG. 7, the back-raising drive unit 50 is arranged at a predetermined position below the central portion of the bed 1 and is attached to the case portion 51 forming a frame and below the central portion of the case portion 51. And a worm gear 53 attached to the rotating shaft of the back-raising electric motor 52 thrust into the case 51.
And a screw shaft 54 rotatably held at a predetermined position by a bearing (not shown) in a posture along a substantially horizontal direction,
And a transmission gear 55 that is attached to one end of the worm gear 53 and that meshes with the worm gear 53. The slide gear 55 is slidably supported in the lateral direction and is screwed to the screw shaft 54, and the end of the slide gear contacts the driving force transmission arm 31. And a body 56.

When the back raising electric motor 52 is driven to rotate the worm gear 53, the worm gear 5 is rotated.
When the screw shaft 54 rotates together with the transmission gear 55 that meshes with the gear 3, the slide body 56 moves laterally (Z1 direction), and the drive force transmission arm 31 that abuts the slide body 56 rotates in the Z2 direction accordingly. The back raising shaft 28 that moves and is fixed to the driving force transmitting arm 31.
Rotates in the Z3 direction, and the push-up arm 30 fixed to the back raising shaft 28 rotates in the j direction (see FIG. 4A).

A leg raising drive unit 70 is also arranged in the case 51, and the leg raising electric motor 72 and the worm gear 73, which have the same structure as the back raising drive unit 50, are provided.
By including the screw shaft 74, the transmission gear 75, and the slide body 76, and driving the leg-raising electric motor 72,
The slide body 76 is adapted to move laterally.

Although not shown, in any of the drive units 50 and 70, when the slide bodies 56 and 76 are moved to the end position of the movement range in order to control the movement range of the slide bodies 56 and 76. Limit switches that contact the slide bodies 56 and 76 are provided.
Then, the slide body 56 reaches the end of such a moving range,
When 76 is moved, the limit switch detects this state, the electric motors 52 and 72 are stopped, and the slide body 76 is regulated so as not to move beyond the moving range. There is.

The interlocking mechanism 40 for interlocking the waist bottom 12 with the movement of the back bottom 11 has one end connected to the upper rotation support shaft 24 connecting the upper end of the first back bottom support arm 26 and the other end. , The interlocking slide arm 42 connected to the first roller supporting connecting shaft 41 connected to the waist bottom 12. A first guide roller 43 that slides along a slide rail 2c provided on the inner lower surface of the main frame 2 is attached to the first roller supporting connecting shaft 41, and the waist bottom 12 includes:
A second roller support shaft 44 is attached to the leg side substantially horizontal direction (F direction), and the second roller support shaft 4 is attached.
A second guide roller 45, which slides along the slide rail 2c of the main frame 2, is attached to the lower portion 4 of the waist 4, as shown in FIGS. 4 (a), 4 (b) and 6 (a). The first and second guide rollers 43 and 45 are slidable along the slide rails 2c of the main frame 2 so as to be horizontally movable along the main frame 2.

As shown in FIGS. 8 (a) and 8 (b), the inner frame portion 13a of the leg bottom 13 has a leg portion extending from the end portion close to the waist bottom 12 in a substantially horizontal direction on the head side (H direction). With the bottom first mounting plate 15 and a member or not,
A leg bottom second mounting plate 16 extending substantially in the leg side horizontal direction (F direction) from an end of the leg bottom 13 adjacent to the sub leg bottom 14 is fixed to the leg bottom first mounting plate. The H-direction side end of 15 is attached to the main frame 2 by a rotation support shaft 17 rotatably attached to the main frame 2, and the leg bottom 13 is rotatably supported around the rotation support shaft 17. ing.

A connecting shaft 18 for connecting the leg bottom 13 and the sub leg bottom 14 is connected to an end portion of the leg bottom second mounting plate 16 in the F direction, and the connecting shaft 18 is connected to the connecting shaft 18.
A third mounting plate 19 extending from the end of the inner frame portion 14 a of the sub leg bottom 14 near the leg bottom 13 in the substantially horizontal direction on the head side (H direction) is connected.

Further, a second regulating rod 35 is hung on a portion of the main frame 2 near the footboard 6, and a rod bracket 35a fixed to the second regulating rod 35 and a sub leg portion. Bottom 14
A connecting link 38 is attached via a pivot shaft 36, 37 between the toe bracket 14c fixed to the toe side end of the.

As shown in FIGS. 8 (a) and 8 (b), the leg lifting mechanism 60 includes the leg bottom 13 of the main frame 2.
A pair of shaft mounting plates 61 fixed to the inner sides of both sides facing each other, a leg raising shaft 62 spanned between the shaft mounting plates 61, and a leg raising drive unit 70 fixed to the leg raising shaft 62. The driving force transmission arm 65 that rotates with the leg raising shaft 62 about the leg raising shaft 62 as an axis, and one end of the driving force transmitting arm 65 is fixed to one side of the leg raising shaft 62.
Leg raising roller 63 attached to the other end in accordance with the rotation of
Is brought into contact with the inner frame portion 13a of the leg bottom portion 13 from below and the leg bottom portion 13 can be pushed up.
Have and.

The driving force transmission arm 65 for pushing up the leg raising arm 64 is brought into contact with the slide body 76 of the leg raising drive unit 70, and drives the leg raising electric motor 72 of the leg raising drive unit 70, Leg raising arm 64
Is pushed up in the k direction (see FIG. 8B).

Further, when the leg bottom 13 and the sub leg bottom 14 are in a horizontal posture, the main frame 2 comes into contact with the lower surface of the inner frame portion 14a of the sub leg bottom 14 near the connecting shaft 18. The stopper portion 66 is fixed, whereby the leg bottom 13 and the sub leg bottom 14 are fixed.
Is designed so that it does not fall below the horizontal position. Furthermore, when the leg bottom 13 and the sub leg bottom 14 are in the horizontal posture, the end portion of the sub leg bottom 14 in the substantially horizontal direction (F direction) on the leg side is the second regulating rod 35. The leg bottom 13 and the sub leg bottom 14 are configured to maintain a horizontal posture by contacting the third stopper body 39 attached to the.

In the above structure, when the back bottom 11, the leg bottom 12, and the sub-leg bottom 13 are not raised, as shown in FIGS. 2 and 4A, the push-up roller 29 of the push-up arm 30 is moved to the back. Inner frame part 1 of the bottom 11
The first stopper body 32 attached to the back bottom 11 abuts on the hinge attachment plate 21, and is attached to the first restricting rod 33 while being slightly separated from the 1a.
The stopper body 34 is brought into contact with the portion of the back bottom 11 on the side that holds the side closer to the head of the person, and the leg bottom 13 and the sub-leg bottom 14 are held in a horizontal posture.

In order to perform the back raising operation from this horizontal posture,
When the user of the bed 1 operates the operation unit 8 to instruct a back-raising operation, the back-raising motor 5 of the back-raising drive unit 50 is instructed.
2 is driven to rotate the push-up arm 30 in the back-raising mechanism 20 through the driving force transmission arm 31 and the back-raising shaft 28 in the j direction shown in FIG. 4B, whereby the push-up roller of the back bottom 11 is rotated. The part in contact with 29 is pushed up in the j direction. Here, the back bottom 11 includes the first and second back bottom support arms 26 and 27.
Since it is swingably supported by, when the back is raised, when the center side of the back bottom 11 is pushed obliquely upward (direction j), the portion that becomes the lower end 11a of the back bottom 11 is in the horizontal posture. The head is moved in a substantially horizontal direction (H direction) from the position.

At this time, the interlocking slide arm 42 of the interlocking mechanism 40 connects the lower end 11a of the back bottom 11 and the waist bottom 12 to each other.
As shown in (c) and FIG. 4 (b), the lower end 11 f of the back bottom 11 is moved in the substantially horizontal direction on the head side (H direction), and the waist bottom 12 is moved via the interlocking slide arm 42. Is pulled in a substantially horizontal direction on the head side (H direction),
The back bottom 11 is moved by the same amount as the lower end 11a.

As a result, the back raising mechanism 20 moves the head side substantially horizontally (H direction), and as shown in FIG. 3 (d), it is possible to satisfactorily reduce the pressure on the abdomen a of the person. Not only that, but at this time, the waist bottom 12 that supports the waist d, which mainly bears the weight of the upper half of the body of the person, is interlocked with the interlocking mechanism 40.
As a result, the person's waist d moves together with the waist bottom 12 to the vicinity of the lower end 11f of the back bottom 11 because it is "moved in conjunction with" in the substantially horizontal direction (H direction) on the head side. It is possible to raise the back while attracting the lower back part 11 to the lower part of the back bottom 11, and as in the conventional case, the lower back part d of the person is lifted and the upper body is displaced. This can be prevented, and the back-raising operation can be performed extremely well while maintaining the state in which the portion from the person's back b to the waist portion d fits the bed 1 in a good state.

Here, when the waist bottom 12 moves in the H direction of the lower end 11f of the back bottom 11, moving in the H direction is referred to as "moved in conjunction". The waist bottom 12 is not necessarily the lower end 11f of the back bottom 11.
Need not be connected to each other, may be connected via another member, and may be moved in conjunction with the lower end 11f of the back bottom 11 even if not connected.

Further, when the back raising operation is performed, the leg raising operation may be performed at the same time. For example, the operating portion 8 is operated to instruct the back raising operation (for both back raising and leg raising). An operation button or the like for performing an operation may be provided and the operation button may be operated), and the leg raising drive unit 7
0 of the leg raising motor 72 is driven to move the leg raising arm 64 in the leg raising mechanism 60 through the driving force transmitting arm 65 and the leg raising shaft 62 in the k direction shown in FIGS. 3 (c) and 8 (b). It is rotated, so that the portion of the leg bottom 13 that is in contact with the leg raising roller 63 is pushed up in the k direction. Since the leg bottom 13 is rotatably supported by the rotation support shaft 17, the rotation support shaft 1
7, the portion of the leg bottom 13 closer to the sub leg bottom 14 is pushed obliquely upward (in the k direction), and the sub leg bottom 14 connected via the connecting shaft 18 is also entirely Specifically, the portion closer to the leg bottom 13 is connected to the connecting shaft 1 while moving in a substantially horizontal direction (H direction) on the head side.
It is pushed diagonally upward (in the m direction) along line 8. As a result, the leg bottom portion 13 and the sub-leg portion bottom 14 are bent upward so that the location of the connecting shaft 18 is the apex.
Bend in the shape of.

By the way, when only the back raising operation is performed without performing the leg raising operation during the back raising operation, the person's waist d (pelvis) cannot be raised, and therefore, the person does not need to raise the leg bottom 13 and It may slide down to the sub leg bottom 14 side.

On the other hand, as described above, by performing the leg raising operation during the back raising operation and inclining the leg bottom 13 obliquely upward, the person moves toward the leg bottom 13 and the sub leg bottom 14 side. It is possible to prevent slipping.

Then, in this case, the
Also, since it does not slide down to the side of the sub leg bottom 14, pressure may be felt on a portion near the waist d of the person. But,
As mentioned above, not only the back bottom 11 but also the waist bottom 1
2 also moves in a substantially horizontal direction on the head side (H direction) to prevent the person from sliding down to the first and second leg bottoms 13 and 14 side, and at the same time, the upper half of the person's upper body does not move to the head side when raising the back. Since it moves well in the horizontal direction (H direction), the pelvis (waist part d) of the person can be raised while the part near the abdomen a of the person is satisfactorily widened. You will be able to raise.

Next, FIGS. 9 and 10 relate to another embodiment of the present invention, and FIGS. 9A and 9B respectively show a waist portion of a bed according to another embodiment of the present invention. In the side view showing the bottom and back bottom and its vicinity,
(A) shows the back bottom in a horizontal position,
(B) shows a state in which the back bottom is in a back-raising posture. FIG. 10 is a plan view (showing a state in which the back bottom is in a horizontal posture) as seen from above the waist bottom and back bottom of the same bed and main parts in the vicinity thereof.

In this bed 1, the waist bottom 12
Is configured to be moved by being interlocked with the movement of the push-up arm 30 by the interlocking mechanism 80. That is, as shown in FIGS. 9 and 10, the back raising shaft 28 to which the push-up arm 30 is fixed is fixed to the rotating arm 81 extending in the direction substantially opposite to the push-up arm 30. An interlocking pivot shaft 82 attached to an end portion of 81 is pivotally supported to the other end of an interlocking slide arm 83 whose one end is attached to the first guide roller 43 of the waist bottom 12.

Also with this configuration, FIGS. 9A and 9B are used.
As shown in FIG. 11, when the back bottom 11 is back-raised from the horizontal posture to the back-raised posture, the pivot arm 81 pivots in the p direction, and accordingly, the first arm connected to the interlocking slide arm 83. Since the first guide roller 43 moves on the slide rail 2c in the substantially horizontal direction (H direction) on the head side, the first and second guide rollers 43, 4 which slide on the slide rail 2c.
The waist bottom 12 supported by 5 is in a substantially horizontal direction on the head side (H
Direction) and will be moved. As a result, not only it is possible to satisfactorily reduce the pressure on the abdomen a of the person, but at this time, the waist bottom 12 that supports the waist d, on which the weight of the upper half of the body of the person is mainly applied, does not move to the head side by the interlocking mechanism 40. Since it is moved in the horizontal direction (H direction), the waist d of the person moves along with the waist bottom 12 to a position near the lower end 11f of the back bottom 11, and as a result, the waist d is as if the waist d is the back bottom 11. It is possible to prevent the upper half of the body from slipping due to the state of raising the back while attracting it to the lower part, and the part from the person's back b to the waist d fits the bed 1. The back raising operation can be performed extremely well while maintaining the state in a good state.

Further, in this embodiment, by changing the length of the rotating arm 81, the amount of movement of the waist bottom 12 in the substantially horizontal direction (H direction) on the head side when raising the back is adjusted. You can That is, as shown in FIG. 4, when the interlocking slide arm 42 is raised back, the back bottom 1
When the lower bottom portion 11f of the back portion 11 is connected to the lower bottom portion 11f, the lower portion 11f of the back portion 11 is also moved by an amount substantially equal to the movement amount of the lower end portion 11f in the substantially horizontal direction (H direction) on the head side. However, in this embodiment, by setting the length of the rotating arm 81 to be short, the moving amount of the interlocking pivot shaft 82 in the substantially horizontal direction (H direction) on the head side becomes small. From the amount of movement of the lower end portion 11f of the back bottom portion 11 in the substantially horizontal direction on the head side (H direction) during the back raising operation,
The amount of movement of the waist bottom 12 in the substantially horizontal direction on the head side (H direction) can be reduced. Further, by setting the length of the rotating arm 81 to be long, the movement amount of the interlocking pivot shaft 82 in the substantially horizontal direction on the head side (H direction) becomes large, so that the back bottom 11 of the back bottom 11 at the time of raising the back is increased. The waist bottom 12 is smaller than the movement amount of the lower end portion 11f in the substantially horizontal direction on the head side (H direction).
It is also possible to increase the amount of movement of the head in the substantially horizontal direction (H direction).

As described above, according to this structure, the lower end 11f of the back bottom 11 is relatively simple in structure.
Since it is possible to adjust the ratio of the amount of movement in the substantially horizontal direction of the head side (the H direction) between the place where is and the bottom 12 of the waist, for example, depending on the skeleton difference due to race and the tendency such as height, the There is an advantage that the bed 1 that can be fitted at the time of raising the back can be manufactured.

As shown in FIG. 4 and the like, in the mechanism in which the waist bottom 12 is interlocked with the back bottom support arms 26 and 27, the interlocking slide arm 42 is used.
By shifting the position from the lower end 11f of 1,
It is possible to adjust the ratio of the amount of movement between the lower end portion 11f of the back bottom 11 and the waist bottom 12 in the substantially horizontal direction on the head side (H direction).

The waist bottom 12 can be moved by moving the waist bottom 12 in conjunction with the movement of the back bottom support arms 26 and 27, or by moving the waist bottom 12 in conjunction with the movement of the lifting arm 30. Since it is not necessary to separately provide a driving unit for moving the device, the manufacturing cost can be minimized.

The waist bottom 12 does not necessarily have to be horizontally movable. For example, the waist bottom 12 may be configured to be slightly inclined when raising the back. The inclination angle is preferably in the range of 10 degrees to 15 degrees. 11 (a) and 11 (b) are side views showing a waist bottom and a back bottom of a bed according to another embodiment having such a configuration and the vicinity thereof,
(A) shows the back bottom in a horizontal position,
(B) shows a state in which the back bottom is in a back-raising posture. FIG. 12 is a plan view (showing a state in which the back bottom is in a horizontal posture) showing a waist bottom and a back bottom of the same bed and main parts in the vicinity thereof.

In this bed 1, the waist bottom 12
Is configured to be moved by being interlocked with the movement of the push-up arm 30 by the interlocking mechanism 90. In other words, in this bed 1, the roller supporting shaft 91 is provided only at the leg side of the waist bottom 12, and the roller supporting shaft 91 is mounted on the slide rail 2c provided on the lower surface of the main frame 2. A sliding guide roller 92 is attached, but a roller supporting shaft and a guide roller are not provided near the head side of the waist bottom 12. Then, as shown in FIG. 11 and FIG.
A rotating arm 93 is fixed to the back-raising shaft 28 to which is attached and extends substantially in a direction opposite to the push-up arm 30 that rotates in the J direction when the posture is raised from the horizontal posture. The interlocking pivot 94 attached to the end of the arm 93 pivotally supports the other end of an interlocking slide arm 95, one end of which is fixed to the head bottom 12 near the head side.

In this configuration, as shown in FIG.
As shown in (b), when the back bottom 11 is moved up from the horizontal posture to the back raising posture, the rotating arm 93 is moved to q.
Direction, the interlocking slide arm 93
The waist bottom 12 connected to is pulled in a substantially horizontal direction on the head side (H direction), and the head side portion of the waist bottom 12 moves while inclining slightly downward. As a result, it is possible not only to satisfactorily reduce the pressure on the abdomen a of the person, but also to maintain the state in which the part from the person's back b to the waist d fits the bed 1 in a good condition, The raising operation can be performed extremely well.

In the above embodiment, the electric motors 52 and 72 are used to perform the back-raising operation and the leg-raising operation, so that the back-raising amount and the leg-raising amount can be adjusted satisfactorily and can be manually performed. The back-raising operation and the leg-raising operation can be easily performed without requiring a relatively large force as in the case of performing the back-raising operation or the leg-raising operation. An electromagnetic plunger or the like may be used instead of the electric motors 52 and 72. Also, it does not have to be an electric bed,
It may be a bed that can be driven manually.

Further, in the above embodiment, the case of the bed 1 which can also perform the leg raising operation has been described, but the present invention is not limited to this, and it is of course applicable to a bed which can perform only the back raising operation. is there.

In the above embodiment, the case where the main frame 2 is held at a predetermined height without moving up and down has been described, but the present invention is not limited to this, and a mechanism for raising the back and legs and It goes without saying that the present invention can be applied to the one in which the whole part including the main frame and the bottom can be raised and lowered.

The push-up arm 30 is the back bottom 1
The push-up roller 29 of the push-up arm 30 may be fixed to the back bottom 11 for example.
It may be fixed to the.

[0071]

As described above, according to the present invention, when the back bottom is moved from the horizontal posture to the back raising posture, the lower end portion of the back bottom in the back raising posture is moved substantially in the head side horizontal direction. And a linking mechanism for moving the waist bottom in a substantially horizontal direction on the head side when the back bottom is moved from the horizontal posture to the back raising posture by interlocking with the movement of the back bottom. This not only makes it possible to satisfactorily reduce the pressure on the abdomen of the person when raising the back, but it is also possible to raise the back while pulling the lower back toward the bed, which causes displacement of the upper body. As a result, it is possible to perform the back raising operation in a comfortable and stable posture.

Further, by providing a substantially horizontal main frame and providing a back bottom support arm and a push-up arm on the main frame or a member connected to the main frame, a stable and relatively simple structure is provided. Can perform back-raising motion. Further, since the back bottom support arm and the push-up arm are connected to the main frame, the entire bottom can be easily moved up and down by moving the main frame up and down.

The back bottom support arm is composed of two pairs of arms rotatably attached to the main frame, so that the back bottom can be moved from the horizontal posture to the back raising posture with a relatively simple structure. When you move it and raise your back,
It is possible to favorably move the lower end portion of the back bottom in the substantially horizontal direction on the head side.

By moving the waist bottom in conjunction with the movement of the back bottom support arm, or by moving the waist bottom in conjunction with the movement of the push-up arm,
Since it is not necessary to separately provide a driving means for moving the waist bottom, the manufacturing cost can be minimized.

Also, by providing a leg raising function, it is possible to prevent the person from sliding down to the bottom side of the leg portion, to satisfactorily widen the area in the vicinity of the abdomen of the person, and to raise the pelvis (waist portion) of the person. As a result, the back can be raised with a particularly comfortable and stable posture.

Further, the push-up arm is driven by the driving force of the drive source electrically driven, so that the back raising amount and the leg raising amount can be satisfactorily adjusted, and the back raising operation and the leg raising operation can be manually performed. The back-raising operation and the leg-raising operation can be easily performed without requiring a comparatively large force as in the case of performing.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a bed according to an embodiment of the present invention.

FIG. 2A is an overall plan view of the bed as seen from above,
(B) is a left side view of the same bed.

3 (a) to 3 (d) are side views schematically showing a state in which the bed according to the embodiment of the present invention is used,
(A) shows the movement of the bed schematically, (b) shows the state in which the back bottom is in a horizontal posture, (c) shows the state in the middle of the back raising operation, (d) shows the back raising operation completed A mattress is laid between the bed and the person in actuality, but in these figures, the mattress is omitted in order to clearly show the relationship between the bed and the person. .

4 (a) and 4 (b) are side views showing a waist bottom and a back bottom of the bed according to the embodiment of the present invention and their vicinity, respectively, and FIG. 4 (a) shows a state in which the back bottom is in a horizontal posture. And (b) shows a state in which the back bottom is in a back-raising posture.

FIG. 5 is a plan view (showing a state in which the back bottom is in a horizontal posture) showing the waist bottom and the back bottom of the bed according to the embodiment of the present invention and the main parts in the vicinity thereof.

6 (a) to (c) are schematic front views of the bed according to the embodiment of the present invention, respectively, and FIG. 6 (a) is a view taken along the line A-A in FIG. 4 (a). Front view seen more, Figure 6
FIG. 6B is a front view seen from the arrow line ii in FIG. 4A, and FIG. 6C is a front view seen from the arrow line woo in FIG. 4A.

FIG. 7 is a perspective view showing a drive unit of the bed according to the embodiment of the present invention.

8 (a) and 8 (b) are side views showing the first and sub leg bottoms of the bed according to the embodiment of the present invention and the vicinity thereof, respectively, and FIG. 8 (a) is the first and sub leg parts. The bottom shows the horizontal posture, and (b) shows the first and sub leg bottoms in the leg raising posture.

9 (a) and 9 (b) are side views showing a waist bottom and a back bottom of a bed according to another embodiment of the present invention and the vicinity thereof, respectively, and FIG. 9 (a) shows a back bottom in a horizontal posture. A certain state is shown, and (b) shows a state in which the back bottom is in a back-raising posture.

FIG. 10 is a plan view of a waist bottom and a back bottom of a bed according to another embodiment and a main part in the vicinity thereof as seen from above (a state in which the back bottom is in a horizontal posture).
Is.

11 (a) and 11 (b) are side views showing a waist bottom and a back bottom of a bed according to another embodiment and the vicinity thereof, and FIG. 11 (a) shows a state in which the back bottom is in a horizontal posture. 9B shows a state in which the back bottom is in the back-raising posture.

FIG. 12 is a plan view (showing a state in which the back bottom is in a horizontal posture) showing a waist bottom and a back bottom of a bed according to another embodiment and main parts in the vicinity thereof.

13 (a) and 13 (b) are side views showing a conventional bed, respectively, (a) shows a state in which the back bottom is in a horizontal posture, and (b) is a state in which the back bottom is in a back-raising posture. Indicates.

14 (a) and 14 (b) are side views showing other conventional beds, respectively. FIG. 14 (a) shows a state in which the back bottom is in a horizontal posture, and FIG. 14 (b) is a back bottom in a posture in which the back is raised. Indicates a state.

[Explanation of symbols]

1 bed 2 mainframe 4 bottom 11 back bottom 12 waist bottom 13 Leg bottom 14 Sub leg bottom 20 Back raising mechanism 22, 23 Lower rotation support shaft 24, 25 Upper rotation support shaft 26 First Back Bottom Support Arm 27 Second Back Bottom Support Arm 30 lifting arm 31 Driving force transmission arm 40, 80, 90 interlocking mechanism 42, 83, 95 interlocking slide arm 50 Back-raising drive unit 52 Electric motor for raising the back 56 slide body 60 Leg lifting mechanism 64 leg raising arm 65 Driving force transmission arm 70 Leg lift drive unit 72 Electric motor for lifting legs 76 slide body 81, 93 rotating arm a abdomen b back c leg d waist

Claims (7)

[Claims] 1. A back bottom for holding a person's back, a substantially horizontal horizontal posture of the back bottom, and an inclination such that a portion of the back bottom for holding a portion near a person's head is upward. When moving the back bottom from a horizontal position to a back-raising position, the back-lowering mechanism that moves the lower end part of the back bottom in the back-raising position in a substantially horizontal direction on the head side. A waist bottom for supporting a person's waist, and a back bottom connected to the waist bottom when the back bottom is moved from a horizontal position to a back-up position. And a movement mechanism that moves the waist bottom in a substantially horizontal direction on the head side in association with the movement of the bed. 2. A main frame provided substantially horizontally, wherein the back-raising mechanism is connected to the main frame or a member coupled to the main frame, and when moving the back bottom from a horizontal posture to a back-raising posture. A back bottom support arm that movably supports a lower end portion of the back bottom in a back-up posture in a substantially horizontal direction on the head side, and a push-up arm that pushes up the back bottom supported by the back bottom support arm. The bed according to claim 1, wherein the bed is a bed. 3. The back bottom support arm is a pair of arms having one end rotatably attached to the main frame and the other end rotatably supported with respect to the back bottom. The bed according to claim 2. 4. The interlocking mechanism connects the waist bottom to the back bottom, and the waist bottom is connected to the head in a substantially horizontal direction by interlocking with the movement of the lower end portion of the back bottom in the back-up posture in a substantially horizontal direction. The bed according to claim 2 or 3, wherein an interlocking arm that moves in a horizontal direction is provided. 5. The interlocking mechanism is provided with an interlocking arm that connects the waist bottom to a push-up arm and moves the waist bottom in a substantially horizontal direction on the head side in conjunction with the movement of pushing up the back bottom of the push-up arm. The bed according to claim 2 or 3, characterized in that. 6. A leg bottom for holding the thigh of a person is provided, which is adjacent to the waist bottom via a member or not, and the leg bottom has one end on the waist bottom side. Down,
The bed according to any one of claims 1 to 5, further comprising a leg raising mechanism for inclining the other end portion obliquely upward. 7. The bed according to claim 1, wherein the push-up arm is driven by a driving force of a driving source electrically driven.