JP3481992B2 - Wake-up bed - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bed, and more particularly to a wake-up bed in which a back frame moves up and down. 2. Description of the Related Art Conventionally, as shown in FIG. 5, a main body frame or a waist frame 21 and a back frame 22 are pivotally connected to each other at a pivot portion 23 having a hinge structure.
There is known a wake-up bed in which the backrest 2 is moved up and down around the pivot portion 23. In this prior art, when the back frame 22 is raised, the back mattress 24 is moved to the waist mattress 25. In order to abut and further push the lumbar mattress 25 to the foot side (in the direction of the arrow), the user is pushed to the foot side together with the lumbar mattress 25, and each time the user feels uncomfortable or inconvenient. is there. Conventionally, as shown in FIG. 6, when a main body frame or a waist frame 21 and a back frame 22 are pivotally connected to each other at a pivot portion 23, the pivot portion 23 is at the height of the upper position of the back mattress 24. And the center point of the tilting motion is shifted upward, so that the back mattress 2
There has been proposed a wake-up bed in which the floor mat 4 does not push the waist mattress 25 to the foot side (Japanese Utility Model Laid-Open No. 1-1).
No. 39761). However, in this prior art,
Since the hinged portion 23 having a hinge structure made of a rigid material is arranged at the height of the upper position of the back mattress 24,
For the user, this rigid connecting portion 23 is located right beside the user's waist. Therefore, during use, there is a problem that the hips hit the pivot portion 23 when the user turns over, or the pivot portion 23 gets in the way when getting down from the bed. [0005] In view of the above points, the present invention aims to improve the usability of the prior art presented in the above-mentioned publications. An object of the present invention is to provide a wake-up bed which does not hit the pivot portion and has no obstacles beside the waist when trying to get out of the bed. [0006] To achieve the above object, the present invention provides a link machine having first to third links.
Comprising a first bar, a first bar and a second bar
And has a substantially L-shape, and a first fixing point is provided at the bent portion of the L-shape.
Having the first fixed point on the non-operating portion of the bed.
Rotatably connected, and the back flange is placed on the first link.
Frame, and the back frame is
-It is slidable along the upper side,
The link has a rod shape and has a second fixing part at the upper end.
Then, the second fixed portion is turned to the inactive portion of the bed.
The third link is connected to a third bar
And has a substantially L-shape having a fourth bar and the third bar.
The first bar is overlapped with the second bar of the first link.
A point is provided and both links are connected rotatably,
The bent portion and the lower end of the second link overlap and the
Two moving points are provided and both links are connected rotatably,
An operation point is provided at the tip of the fourth bar, and the operation point
Is rotatable with the hinge at the foot end of the back frame
Providing a wake-up bed characterized by being connected
You. The hinge portion of the hinge structure in the above-mentioned prior art is
Although this itself constitutes the center point of the raising / lowering operation, and thus is always located at the center point of the raising / lowering operation, the link mechanism itself does not have to be located at the center point of the raising / lowering operation. Therefore, if a link mechanism is employed in place of the hinged portion of the hinge structure, it is possible to eliminate an obstacle that obstructs the use from the center point of the tilting operation, that is, right beside the user's waist. [0008] The center point of the raising / lowering operation is set higher than the back frame in the collapsed state, and the link mechanism itself is lower than the center point of the raising / lowering operation or the upper surface of the back frame in the collapsed state. The following are conceivable as link mechanisms for disposing them at positions. That is, as shown in FIG. 1 which is a principle diagram, the link mechanism 11 includes first to third links 12 and 1.
3, 14 and the first and second links 12, 13 have first or second fixed points 15, 16, respectively. As described later, the first and second links 12, 13
Respectively correspond to these first or second fixed points 15, 16
In this case, the bed is rotatably connected to a non-operating portion of the bed (a fixed portion of the bed that does not move with respect to the raising / lowering operation) such as a main body frame or a waist frame. The back frame is supported by the first link and is slidable along the upper side of the first link. A third link 14 is rotatably connected to the first link 12 at a first moving point 17 and a second link 1 at a second moving point 18.
3 and rotatably connected to the first and second moving points 17,
An action point 19 is provided above the position 18. As will be described later, the third link 14
It is rotatably connected to the foot end of the back frame. In FIG. 1, the solid line indicates the attitude of the link mechanism 11 in a state where a back frame (not shown) is tilted. When the first link 12 is rotated from this state to the point A on the upper left with the first fixed point 15 as a center, the second and third links 13 and 14 are respectively driven. 19 moves from point B to point C on the upper left. This movement of the action point 19 is represented by D
The rotation is clockwise around the point, and the rotational movement of the application point 19 causes the back frame to stand upright. The point D, which is the center point of the standing operation, is located further above the point B, which is the highest part of the link mechanism 11 when the back frame is tilted. When tilting the back frame, the operation direction and link mechanism 1
Each movement of 1 is opposite to the case of standing. Next, embodiments of the present invention will be described with reference to the drawings. In FIG. 2 showing a main part of the wake-up type bed according to the embodiment, reference numeral 1 denotes a back frame which moves up and down, and the back frame 1 and a main body frame or a waist frame (hereinafter simply referred to as a waist frame). A link mechanism 11 is provided below the upper portion (upper surface portion) of the back frame 1 to guide the back frame 1 up and down. A back mattress 3 is placed on the back frame 1, a waist mattress 4 is placed on the waist frame 2, and both mattresses 3 and 4 are connected to each other at an upper portion. The link mechanism 11 has first to third links 12, 13, and 14. The first link 12 includes a first bar 12a facing left and a second bar 1 facing downward in the state shown in the figure.
2b, and has a substantially L-shaped front surface, and has an L-shaped bent portion 12.
c has a first fixed point 15, and the first fixed point 15 is rotatably connected to a non-operating portion of the bed such as the waist frame 2. The back frame 1 is mounted on the first link 12, and the back frame 1 is slidable along the upper side 12d of the first bar 12a. The second link 13 having the shape of a front bar has a second fixing portion 16 at its upper end in the state shown in the drawing, and this second fixing portion 16 is used as a non-operating portion of the bed such as the waist frame 2 or the like. It is rotatably connected. Third link 14
Has a leftward third bar 14a and an upward fourth bar 14b in the state of the drawing, and has a substantially L-shaped front view. The third bar 14a and the second bar 12b of the first link 12 are overlapped with each other, and a first moving point 17 is provided here.
2, 14 are rotatably connected. Also, the L-shaped bent portion 14c of the third link 14 and the lower end of the second link 13 are overlapped, and a second moving point 18 is provided here, and the two links 13, 14 are rotatably connected. I have. An action point 19 is provided at the tip of the fourth bar 14b of the third link 14, and this action point 19 is connected to the foot end 1 of the back frame 1.
a is rotatably connected to a by a hinge 5. FIG. 2 shows a state in which the back frame 1 is laid horizontally. Then, when the first link 12 is rotated about 85 degrees clockwise about the first fixed point 15 by manual or automatic operation from this state, as shown in FIG. , Respectively, and the hinge 5 provided particularly at the action point 19 rotates clockwise about the point D. Therefore, as a result, while the back frame 1 is supported by the first link 12,
In addition, the user can stand up while rotating about the point D while sliding with respect to the first link 12. The point D is located at or near the connecting portion between the back mattress 3 and the waist mattress 4, so that the back mattress 3 is erected with the back frame 1 while rotating around the point D, so that the back mattress 3 is 4
Is prevented from being pushed toward the foot. When the back frame 1 is tilted, the operation direction and the movement of the link mechanism 11 are opposite to those in the case of standing up. The wake-up bed has the following effects. That is, since the center point D of the raising / lowering operation of the back frame 1 is substantially the same as the height position of the upper portions of the mattresses 3 and 4, when the back frame 1 is raised, the back mattress 3 lifts the waist mattress 4 with the foot. It is not pushed to the side and the user does not have to feel uncomfortable or inconvenient. In order to achieve the same effect as the related art presented in the above publication, all of the link mechanisms 11 that guide the raising / lowering operation of the back frame 1 are all located on the upper portion (upper surface) of the back frame 1 in the folded state. Part) is located on the lower side,
It is possible to eliminate an obstacle that hinders use from the center point D of the raising / lowering operation, that is, right beside the user's waist. Therefore, it is possible to improve the usability compared to the prior art presented in the above-mentioned publication, and for example, even if the player turns over, the waist does not hit the pivot portion, and it is easy to go down from the bed to the side. When the user lays on the mattresses 3 and 4 on the frames 1 and 2, the mattresses 3 and 4 are compressed vertically by receiving the weight of the user. , 4 have a predetermined thickness w. Therefore, mattresses 3 and 4 in this compressed state
In the range of the thickness w, even if the link mechanism 11 is arranged beside the mattresses 3 and 4, there is little hindrance to use.
Never hit one. Therefore, the link mechanism 11
For example, as shown in FIG. 4, the upper end (upper surface) of the back frame 1 in a state where the distal end of the fourth bar 14b is folded down
Even if it protrudes upward, if it is located within the range of the thickness w, the intended object of the present invention can be achieved. That is, if the link mechanism 11 is arranged at a position lower than the center point D of the tilting operation, the usability can be improved by the amount corresponding to the height position over the prior art presented in the above-mentioned publication. It is a translation. As for the mattress, in addition to the mattress having the back mattress 3 and the waist mattress 4, both mattresses 3 and 4 may be integrated. The present invention has the following effects. That is, in the wake-up bed according to the present invention, as a result, the center point of the raising / lowering operation of the back frame is set at a position higher than that of the back frame in the tilted state. Thus, when the back frame is raised, it is possible to prevent the back mattress from pushing the lumbar mattress toward the feet, thereby preventing the user from feeling uncomfortable or inconvenient. Then, after achieving such an effect, the link mechanism is moved to the back frame and the waist frame.
Since it is disposed below the upper surface of the , it is possible to eliminate a center point of the tilting operation, that is, from the side of the user's waist, which obstructs the use. Therefore, the use of the bed can be improved accordingly.
For example, when the player turns over, the user does not hit the hips, and it is easy to get down from the bed to the side. The above link mechanism is simple and simple.
Provided.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a principle view of a link mechanism used in the present invention. FIG. 2 is a front view of a main part of a wake-up bed according to an embodiment of the present invention. FIG. 4 is a front view of a main part of a wake-up bed according to another embodiment of the present invention. FIG. 5 is a front view of a main part of a wake-up bed according to a conventional example. [Description of Signs] 1 Back frame 1a Foot end 2 Waist frame 3 Back mattress 4 Waist mattress 5 Hinge 11 Link mechanism 12 First link 12a, 12b, 14a, 14b Bars 12c, 14c Bent portion 12d Upper side 13 Second link 14 Third link 15 First fixed point 16 Second fixed point 17 First moving point 18 Second moving point 19 Application point D Center point

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A47C 20/04 A47C 20/08 A61G 7/00

Claims (1)

(57) [Claims] [Claim 1] First to third links (12) (13)
A link mechanism (11) having a first bar (12a) and a second bar (12a);
A substantially L-shape having a bar (12b) and an L-shape bent
A portion (12c) having a first fixing point (15);
The bed can be freely rotated with the fixed point (15) to the non-operating part of the bed
Connected to the first link (12).
Frame (1) is mounted thereon and said back frame (1)
Along the upper side (12d) of the first bar (12a).
Ride and freely, said second link (13) exhibits a rod, at its upper end
A second fixing portion (16), and the second fixing portion (16)
And is rotatably connected to the non-working part of the bed.
Ri, said third link (14) includes a third bar (14a) Fourth
A substantially L-shape having a bar (14b);
-(14a) and the second bar (1) of the first link (12).
2b) is superimposed and a first moving point (17) is provided here.
And both links (12) and (14) are rotatably connected,
Under the L-shaped bent part (14c) and the second link (13)
The end is overlapped and a second moving point (18) is provided here.
The two links (13) and (14) are rotatably connected
An action point (19) is provided at the tip of the fourth bar (14b).
The action point (19) is on the foot side of the back frame (1).
It is rotatably connected to the end (1a) with a hinge (5).
The wake-up bed is characterized by being taken up.