JP3575031B2 - bed - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to a bed suitable for being installed in an accommodation facility such as a hotel.
[0002]
[Prior art]
Bed making, which is necessary for business beds in hotels and other accommodation facilities, involves pushing sheets into the edges of mattresses on the beds, but it is necessary for workers to perform many beds in a limited time. Therefore, this is an extremely burdensome operation. In particular, since the operation is performed while bending down, many people suffer from low back pain, which is a problem. Therefore, the bed body is provided with a telescopic actuator capable of rapidly expanding and contracting, such as a gas spring. The telescopic actuator drives an elevating link such as a parallel link and moves the elevating base fixed to the elevating link from the lower limit position (normal use position) to the upper limit. It is conceivable to use a bed which is raised and held at a position (a position where bed making is easy to perform) (JP-A-5-176829). However, in this technique, since the elevating base installed on the upper side of the bed body is moved up and down, when the elevating base is raised, the bed body and the mattress are separated, and there is a drawback that the mattress is not noticed. . In order to solve this drawback, Japanese Patent Application No. 5-177079 discloses a floor frame, a bed body having main legs fixed to the floor frame, a lifting link holding the bed body, and a telescopic actuator for operating the lifting link. And an auxiliary leg portion held at one end of a lifting link, so that the mattress and the bed body are raised together, so that the displacement of the mattress on the bed body can be easily determined. . FIG. 5 is a cross-sectional view of a bed according to this technique. In the figure, reference numeral 100 denotes a bed body having a main leg 106, and reference numerals 101 and 102 denote holding members, which constitute lifting links. Reference numeral 103 denotes an auxiliary leg, which is provided in parallel with the bed main body 100, and reference numerals 104 and 105 denote telescopic actuators for operating a lifting link.
[0003]
[Problems to be solved by the invention]
In the above-described conventional technology, the telescopic actuator is provided only on one side of the lifting link, and the landing of the main leg of the bed main body on the telescopic actuator side is incomplete due to elastic deformation of the holding member and variation in processing accuracy of each member. It was. For this reason, abnormal noise was caused by the contact between the main landing gear and the floor.
[0004]
It is a technical object of the present invention to completely land and prevent abnormal noise.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned technical problems, the technical measures taken in the invention of claim 1 include a floor frame for holding a mattress, a bed body having main legs fixed to the floor frame, and a bed body at one end. A bed including an elevating link having two rotatable coupling members that are orthogonal to each other and rotatable, a telescopic actuator that operates the elevating link, and an auxiliary leg that holds the other end of the holding member. , A first spacer is provided between the floor and the holding member on the opposite side of the telescopic actuator.
[0006]
The technical measures taken in the invention of claim 2 include a transverse member for preventing the bed body from being twisted, and a second spacer attached to the transverse member and having a central portion of the transverse member being the highest. It is.
[0007]
[Action]
The operation of the first aspect will be described. By providing the first spacer disposed between the floor and the holding member on the opposite side to the telescopic actuator, the width of the holding members on the opposite side to the telescopic actuator can be reduced. This compensates for the lift of the main leg on the telescopic actuator side, so that the landing can be performed completely. When the width of the holding members on the opposite side of the telescopic actuator is reduced, the bed body is inclined. However, the provision of the first spacer prevents the bed body from being inclined.
[0008]
The operation of the invention of claim 2 will be described. The bed body is formed on the left and right sides of the bed body by having the second spacer having a transverse member for preventing the bed body from being twisted and being attached to the transverse member and having the highest central portion of the transverse member. The main spacer is supported at three points in the center of the second spacer supported by the auxiliary leg opposite to the telescopic actuator, so that it is supported at three points. Therefore, the landing of the main landing gear can be performed more completely.
[0009]
【Example】
Hereinafter, an embodiment according to the present invention will be described with reference to FIGS.
[0010]
The bed body 10 mainly includes a rectangular bottom frame 11, a floor frame 12 of the same shape, and a plurality of columns 13 disposed between the bottom frame 11 and the floor frame 12. The floor frame 12 is composed of a floor-side long frame 12a in the longitudinal direction (hereinafter referred to as the front-rear direction) and a horizontal floor-side short frame 12b orthogonal to the floor frame. It is composed of a side short frame 11b (FIG. 2). The floor frame 12 has a pair of opposite floor-side long frames 12a connected by a plurality of floor bars 14. Similarly, the opposing bottom-side long frame 11a also has a bottom short frame 11b (not shown) at each of four intersecting corners. , An oblique bar 15 is installed, and a main leg 16 is mounted on each of the oblique bars 15.
[0011]
The bed of the present embodiment is provided with elevating means for elevating the bed together with the bed body 10. This elevating means comprises two telescopic actuators 17 and 18 provided on the left side of the bed body 10 in FIG. 1 and having a gas spring therein, and a raising and lowering link 19 driven by these telescopic actuators 17 and 18. Have been.
[0012]
The elevating link 19 is composed of a pair of parallel elements and a pair of right and left intersecting rotating elements. Here, one parallel element is the floor frame 12, and the other parallel element is a rectangle having a cross bar 20a. Are the auxiliary legs 20. A pair of first spacers 21 project from the auxiliary leg portion 20 on the left and right front sides. The rotation element includes left and right inner rotation pieces 22 serving as holding members and outer rotation pieces 23a and 23b on both outer sides. The inner rotation piece 22 and the outer rotation pieces 23a and 23b It rotates about the member 24. Further, a lateral member 34 for preventing the outer rotating pieces 23a and 23b from bending in the thickness direction is provided. The lateral member 34 has second spacers 35a and 35b attached to both end sides. And a second spacer 35c which is higher than at least the second spacers 35a and 35b and is located at the center of the transverse member 34, and these second spacers 35a, 35b and 35c are preferably elastic. It consists of body.
[0013]
The upper end of the inner turning piece 22 is pivotally supported via a viewpoint member 25a on a front upper turning bar 25 provided between the two floor-side long frames 12a, and both lower ends are auxiliary legs. The rollers 27a and 27b rolling on the inner rail 26 attached to the section 20 are pivotally supported respectively. Further, the front upper rotation bar 25 comes into contact with the second spacers 35a, 35b, 35c, and the weight of the bed body 10 is reduced to the floor via the second spacers 35a, 35b, 35c and the outer rotation pieces 23a, 23b. It is supported and constitutes the main landing gear. As shown in FIG. 4, the viewpoint member 25a is provided with an elongated hole 25b. The elongated hole 25b is loosely inserted into a pin 12c provided in the floor-side elongated frame 12a. From falling off.
[0014]
The upper ends of the outer turning pieces 23a and 23b are pivotally supported by rollers 29 rolling on both outer rails 28 attached to the floor-side long frame 12a via a rear upper turning bar 30. ing. The lower end of each of the outer rotating pieces 23a and 23b is supported by a viewpoint member 31a attached to the auxiliary leg 20, and a protruding end 31 is further extended from the viewpoint member 31a. . A support shaft rotatable caster 32 is attached to each of the protruding ends 31.
[0015]
The telescopic actuators 17 and 18 have base ends rotatably supported by the floor-side short frame 12b and distal ends pivotally supported by rollers 27a and 27b via a viewpoint member 33. The expansion and contraction actuators 17 and 18 use, for example, a gas spring having a free piston. However, there is no harm in using the type with a lock.
[0016]
A caster 36 fixed to a support shaft is attached to the right side of the auxiliary leg portion 20 in FIG.
[0017]
Further, a spring 37 is provided between the floor bar 14 and the auxiliary leg 20 to assist the expansion and contraction operation when the expansion and contraction actuators 17 and 18 are started.
[0018]
Next, the operation of the present embodiment will be described. First, when in a normal use state, the bed body 10 is at the lower limit position as shown in FIG. At this time, the extendable actuators 17 and 18 are extended and contracted by the weight of the bed body 10.
[0019]
When raising the bed body 10, the right side of the bed body 10 in FIG. 1 is slightly lifted by hand. As a result, the telescopic actuators 17 and 18 start extending because the external force is reduced. When the extension is started, the spring 36 further reduces the external force of the telescopic actuators 17 and 18 by its elastic force, and increases the extension force. Therefore, while the rollers 27a, 27b, 29 are rolling on the rails 28, 26, the turning pieces 22, 23a, 23b of the lifting link 19 are in contact with the floor frame 12 and the auxiliary leg 20 as shown in FIG. The bed body 10 is raised to a height position determined by the telescopic actuators 17 and 18 and the spring 36. In this case, an arbitrary height can be selected by using a gas spring with a lock.
[0020]
When returning the bed body 10 to the home position, the bed body 10 may be pressed.
[0021]
Further, in the present embodiment, since the first spacer 21 is provided, the gap between the inner rotating piece 22 and the outer rotating piece 23b on the right side in FIG. 1 can be reduced. Completely done. When the first spacer 21 is used to reduce the gap between the inner rotating piece 22 on the left side in FIG. 1 and the outer rotating piece 23b, the bed body 10 is inclined. Has been prevented. Further, by providing the second spacers 35a, 35b, and 35c attached to the lateral member 34, the bed body 10 can be divided into the main leg 16 formed on the bed body 10 and the central portion 35c of the second spacer. Therefore, it is supported at three points. Therefore, the landing of the main landing gear can be performed more completely.
[0022]
【The invention's effect】
The effect of the first aspect will be described. By providing the first spacer disposed between the holding member on the opposite side to the telescopic actuator and the floor, the width between the holding members on the opposite side to the telescopic actuator can be reduced. This compensates for the lift of the main leg on the telescopic actuator side, so that the landing can be performed completely. When the width of the holding members on the opposite side to the telescopic actuator is reduced, the bed body is inclined. However, the inclination of the bed body can be prevented by disposing the first spacer.
[0023]
The effect of the invention of claim 2 will be described. The bed body is formed on the left and right sides of the bed body by having the second spacer having a transverse member for preventing the bed body from being twisted and being attached to the transverse member and having the highest central portion of the transverse member. Since the main leg is supported at three points at the center of the second spacer supported by the auxiliary leg opposite to the telescopic actuator, it is supported at three points. Therefore, the landing of the main landing gear can be performed more completely.
[Brief description of the drawings]
FIG. 1 is a diagram showing an arrow of a cross section taken along line AA of FIG.
FIG. 2 shows a top view of the bed body.
FIG. 3 shows a cross-sectional view when the bed body is in an upper position.
FIG. 4 is an enlarged view of a viewpoint member.
FIG. 5 shows a cross-sectional view of a conventional bed.
[Explanation of symbols]
Reference Signs List 10 bed main body 11 bottom frame 12 floor frame 17 telescopic actuator 18 telescopic actuator 19 lifting link 20 auxiliary leg 21 first spacer 22 inner rotating piece 23a outer rotating piece 23b outer rotating piece 35a second spacer (end side)
35b 2nd spacer (end side)
35c 2nd spacer (central part)

Claims (2)

A floor frame for holding the mattress, a bed body having a main leg fixed to the floor frame, and two holding members for holding the bed body at one end have orthogonally rotatable coupling portions. A lift link, a telescopic actuator that operates the lift link, and an auxiliary leg that holds the other end of the holding member.
A bed comprising: a first spacer disposed between the floor and the holding member on the side opposite to the telescopic actuator. 2. The bed according to claim 1, further comprising a second spacer for preventing the torsion of the bed body, the second spacer being attached to the horizontal member, and having a central portion of the horizontal member having the highest height. .

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