JP3773149B2 - Frame lifting mechanism in bed - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a frame lifting mechanism in a bed, and more particularly to a frame lifting mechanism suitable for a home bed.
[0002]
[Prior art]
When the patient stands up from the bed, the bed height should be low enough to allow the patient's feet to reach the floor, and when the caregiver cares, the bed height reduces the burden on the caregiver Therefore, the higher one is better. As described above, this type of bed is generally provided with a frame lifting mechanism so that the height of the bed can be appropriately adjusted according to the situation.
[0003]
By the way, the lifting mechanism for the bed frame is preferably a mechanism for lifting the bed frame in the vertical direction in order to effectively use the space of the room (bedroom) in which the bed is installed. Also, in home beds, there are many cases where the beds are installed in a Japanese-style room, and the mechanism must not damage the tatami mat.
[0004]
Further, the home bed is preferably an assembly type because it is easy to transport. However, when the assembly type is used, it takes time and effort to assemble, especially when a drive unit such as a lifting mechanism of the bed frame has to be assembled.
[0005]
[Problems to be solved by the invention]
The present invention has been made in view of the above problems, and it is possible to effectively use the space in the bedroom by vertically moving the bed frame, and there is no worry of damaging the bedroom floor such as a tatami mat. An object of the present invention is to provide a frame lifting mechanism suitable for a home bed.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention is as follows. That is, the lifting mechanism of the frame in the bed of the present invention supports the two rotating shafts on the bed frame so as to be rotatable at a predetermined interval in the front and rear, and fixes the leg members to the two rotating shafts, respectively. Via an interlocking mechanism in which brackets projecting in the opposite vertical direction to the rotary shafts are connected by connecting rods so that both rotary shafts are rotated in the opposite directions by the same amount in the same manner. The leg member is configured to open and close, and a grounding foot is provided at the tip of the leg member, and the tip of the leg member is configured to be movable along the grounding foot when the leg member is opened and closed. The center side end part and the intermediate part of the leg member are connected by an auxiliary link.
[0007]
The bed frame may be divided into a head side frame, an intermediate frame, and a leg side frame, and two rotation shafts are supported on the intermediate frame.
[0008]
Furthermore, the two rotating shafts are supported by a bed frame through an automatic locking mechanism so as to be appropriately removable.
[0009]
[Action]
The two rotating shafts are interlocked and connected by an interlocking mechanism so as to rotate at the same angle in opposite directions. Therefore, both leg members fixed to the rotating shaft perform opening and closing operations at the same angle. The bed frame moves up and down by opening and closing.
[0010]
A grounding foot installed on the floor is provided at the tip of the leg member, and the bed center side end of the grounding foot and the intermediate part of the leg member are connected by an auxiliary link to open and close the leg member. Sometimes the tips of the leg members move the same distance along the ground leg. Therefore, the bed frame moves up and down in the vertical direction, and the floor surface of the tatami or the like is not damaged by the opening / closing operation of the leg member.
[0011]
In addition, since the bed frame is divided into a head side frame, an intermediate frame, and a leg side frame and a rotating shaft is provided on the intermediate frame, the lifting mechanism of the frame can be integrated into the intermediate frame, and the bed can be easily assembled. In addition, the rotary shaft is detachably attached to the intermediate frame, and it is also easy to assemble because the automatic lock mechanism that can be attached simply by placing the intermediate frame from above with the rotary shaft spaced apart at a predetermined interval It can be finely disassembled and packed, and is suitable for an assembly-type home bed.
[0012]
【Example】
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The code | symbol 1 in a figure shows the bed provided with the raising / lowering mechanism of the flame | frame in the bed concerning this invention. The bed 1 is provided with a floor plate 3 divided into an upper back portion, a lower back portion, a waist portion, a knee portion and a leg portion, for example, as shown in FIG. By the mechanism, the back and knees can be raised appropriately. A headboard 4 and a footboard 5 are respectively attached to the head side and leg side ends of the frame 2.
[0013]
The frame 2 is composed of a head side frame 2a, an intermediate frame 2b, and a leg side frame 2c, and between the head side frame 2a and the intermediate frame 2b and between the intermediate frame 2b and the leg side frame 2c. The frame 2 can be divided into three parts by the connecting and fixing means 6 provided.
[0014]
The connecting and fixing means 6 is provided with a bracket 9 fixed to the end portions of the head-side frame 2a and the leg-side frame 2c by forming a downward notch groove 8 above the bracket 7 fixed to the end portion of the intermediate frame 2b. A shaft 10 to be fitted into the notch groove 8 is provided, and when the shaft 10 is fitted into the notch groove 8, the head side frame 2a and the leg side frame 2c rotate downward about the shaft 10 due to their own weight, and the bracket 7 And the bracket 9 are in contact with each other to support the frames 2a, 2b, 2c in a horizontal state. The bracket 7 is provided with a lock pin 11 whose tip can protrude outwardly and is always urged outward by a spring. On the bracket 9 side, the tip of the lock pin 11 in the frame horizontal state is provided. Is provided with a through-hole 12 to be engaged. By the connecting fixing means 6 having such a configuration, it is possible to easily assemble or disassemble the frame 2 without tools.
[0015]
Wherein the intermediate frame 2 b, bed short hand direction of the two whose axes are rotary shaft 13 is rotatably supported at a predetermined interval in the front-rear leg member 15 to the rotary shaft 13 , 16 are fixed, and the leg members 15, 16 are rotatable about the rotation shafts 13, 14. The rotating shafts 13 and 14 are attached to the intermediate frame 2b by projecting support brackets 17 and 18 at a predetermined interval in the front and rear at the lower part of the intermediate frame 2b and through holes 17a in the brackets 17 and 18, respectively. , 18a, and on the other hand, on both left and right ends of the rotary shafts 13 and 14, automatic locking mechanisms are provided with lock pins 19 and 20 whose tips can protrude and retract outward and are always urged outward by springs. When the intermediate frame 2b is placed on the rotary shafts 13 and 14 spaced apart by the interval between the support brackets 17 and 18 from above, the lock pins 19 and 20 are connected to the through-holes 17a and 18 of the support brackets 17 and 18 , respectively. 18a can be automatically engaged and attached.
[0016]
Reference numeral 21 denotes an interlocking mechanism. Brackets 22 and 23 project from the two rotary shafts 13 and 14 in opposite directions, and the tip portions of the brackets 22 and 23 are connected to each other by a connecting rod 24. The rotary shafts 13 and 14 are configured to rotate in opposite directions, and both ends of the expansion / contraction drive device 25 such as an actuator are attached to the tip ends of brackets 26 and 27 projecting from the rotary shafts 13 and 14. It is a supported structure. That is, by extending / contracting the expansion / contraction drive device 25, the leg members 15 and 16 are opened and closed in synchronization with the letter C in a side view.
[0017]
Reference numerals 28 and 29 denote grounding feet, and rollers 30 and 31 provided at the distal ends thereof are formed so as to be movable along the grounding feet 28 and 29 as the leg members 15 and 16 are opened and closed. Yes. Then, the grounding feet 28 and 29 side and the intermediate portions of the leg members 15 and 16 are connected by the auxiliary links 32 and 33, respectively, and the leg members 15 and 16 are opened and closed, whereby the bed frame 2 is moved up and down in the vertical direction. It is configured to do. The left and right grounding feet 28 and 29 are connected by a connecting rod 34 and are held in parallel at a predetermined interval.
[0018]
Next, the operation of the above example will be described. When the telescopic drive device 25 is extended, the leg members 15 and 16 are rotated in the closing direction with the rotary shafts 13 and 14 as axes. This time, since the rotary shaft 13 and 14 are interlocked by respective rotating shaft interlocking mechanism 21 having the configuration connected by a connecting rod 24 to the bracket 22, 23 13 and 14 are protruded from the both rotary shaft 13 , 14 rotate at the same angle in the opposite direction, and the leg members 15, 16 are synchronously closed to raise the frame 2.
[0019]
When the leg members 15, 16 are closed, the bed center side ends of the grounding feet 28, 29 and the intermediate portions of the leg members 15, 16 are connected by the auxiliary links 32, 33. The tip of the frame moves along the grounding feet 28 and 29 installed on the floor by the same distance from each other, so that the frame 2 rises in the vertical direction. Further, since the rollers 30 and 31 provided at the tips of the leg members 15 and 16 are configured to move along the guide rail portions formed on the grounding feet 28 and 29, the leg members 15 and 16 are opened and closed. There is no damage to the floor, such as tatami mats.
[0020]
When the frame 2 is lowered, if the telescopic driving device 25 is shortened, the frame 2 can be lowered in the vertical direction by acting exactly the reverse of the case where the frame 2 is raised.
[0021]
In addition, since the frame 2 is divided into a head side frame 2a, an intermediate frame 2b, and a leg side frame 2c, and the rotary shafts 13 and 14 are provided on the intermediate frame 2b, the lifting mechanism of the frame can be integrated into the intermediate frame 2b. The bed is easy to assemble. Further, the rotary shafts 13 and 14 are configured to be attachable to and detachable from the intermediate frame 2b. The automatic locking mechanism R can be attached only by placing the intermediate frames 2b from above by separating the rotary shafts 13 and 14 from each other at a predetermined interval. Therefore, it is very easy to assemble, can be finely disassembled and packed, and is suitable for an assembly-type home bed.
[0022]
【The invention's effect】
As described above, according to the present invention, the two rotating shafts are rotatably supported by the frame at a predetermined interval, and the two rotating shafts are rotated via the interlocking mechanism so as to rotate in opposite directions. The leg member provided on the rotating shaft is configured to open and close synchronously, and a grounding foot that can move the tip of the leg member is provided, and the leg member and the grounding foot are connected by an auxiliary link. Since it is configured, when the leg member is opened and closed, the bed frame moves up and down in the vertical direction, and the tip of the leg member moves in the grounded foot, so that the tatami or the like is not damaged. In addition, the frame is divided into three parts, and the intermediate frame supports the two rotating shafts. Therefore, the lower components can be easily assembled from the frame, and the packing state is compact, so that it can be used at home. It became suitable for the bed.
[Brief description of the drawings]
FIG. 1 is a simplified overall side view of a bed provided with a frame lifting mechanism according to the present invention. FIG. 2 is a simplified side view of an essential part of the bed. FIG. 3 is a plan view of the bed. FIG. 5 is an enlarged plan view showing a frame connecting and fixing means. FIG. 6 is a side view explaining its operation. FIG. 7 is an enlarged sectional view showing an automatic locking mechanism.
1 Bed 2 Bed frame 2a Head side frame 2b Intermediate frame 2c Leg side frame 13, 14 Rotating shaft 15, 16 Leg member 21 Interlocking mechanism 28, 29 Grounding foot 32, 33 Auxiliary link R Automatic lock mechanism

Claims (3)

Two rotating shafts are rotatably supported on the bed frame at a predetermined interval in the front and rear, and leg members are fixed to the two rotating shafts, respectively, and both rotating shafts are synchronized with each other in the opposite direction by the same amount . The leg member is configured to open and close via an interlocking mechanism in which brackets protruding from the rotating shafts in the opposite directions are connected to each other by a connecting rod. A grounding foot is provided at the tip of the leg member so that the tip can be moved along the grounding foot when the leg member is opened and closed, and the bed center side end of the grounding foot and the intermediate part of the leg member are supported. A lifting mechanism for a frame in a bed, which is connected by a link. The bed frame according to claim 1, wherein the bed frame is configured to be divided into a head side frame, an intermediate frame, and a leg side frame, and two rotating shafts are supported by the intermediate frame. mechanism. The lifting mechanism of the frame in the bed according to claim 1 or 2, wherein the two rotation shafts are detachably supported by the bed frame through an automatic locking mechanism.

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