CN1751631A - Mechanism for lifting back of bed - Google Patents

Abstract

A back raising-up mechanism of bed is composed of a bed frame, a drive motor installed to bed frame, two slide rods connected between bed frame and bed board, a rotary axle fixed to bed frame, a drive axle, two supporting rods fixed to both ends of said rotary axle, a crank fixed to said rotary axle and linked with the telescopic rod of drive motor, and another two cranks fixed to both ends of said drive axle and connected to said slide rods via connecting rods.

Description

The mechanism for lifting back of bed

Technical field: the present invention relates to a kind of mechanism for lifting back.

Background technology: human body is transformed into from lying on the back the process of sitting posture, generally is to be that rotating shaft rotates with the hip joint, and elongate on the back of the body, buttocks surface, and belly shrinks.At present, in Bed with special provision for nursing with back of the body function, it plays back of the body action is to shrink along its length with mattress surface, if human body is lain on the back and finished back of the body action on such bed, contract because above-described one stretches one, human body back and mattress surface generation relative motion cause friction, and the people knows from experience the distance of being passed a big section by bed to the direction of pin.

The objective of the invention is to: the mechanism for lifting back that a kind of Bed with special provision for nursing is provided; make the mattress surface can be identical substantially in playing unlucky moving process with the movement locus on human body back surface; avoid friction; and reduce moving of human body in the motion process to greatest extent, to solve the problem that prior art exists.

The present invention constitutes like this: it comprises the drive motors (4) that is contained on the bedstead (2), on bedstead (2), be connected with rotating shaft (6) and power transmission shaft (9), be fixed with support bar (13) at the two ends of rotating shaft (6), the other end of support bar (13) is connected on the bed board (1); Also be fixed with crank (5) and crank (24) in rotating shaft (6), crank (5) links to each other with the expansion link of drive motors (4), and crank (24) links to each other with crank (23) on being fixed on power transmission shaft (9) by connecting rod (10); Be fixed with crank (8) at the two ends of power transmission shaft (9), crank (8) links to each other with slide bar (20) by connecting rod (7), and an end of slide bar (20) is fixed on the bed board (1), and the other end is connected again on the bedstead (2).

Be connected with roller (15) on the other end that is fixed in the support bar (13) in the rotating shaft (6), roller (15) is enclosed in the chute (3) that is fixed on the bed board (1).

Slide bar (20) is connected with pulley (22) again at the opposite side of an end that is connected with connecting rod (7), and pulley (22) is enclosed in the arc groove (21) that is fixed on the bedstead (2).

Roller (15) and pulley (22) also can be rotating slide block.

Drive motors (4) also can be manual telescoping mechanism.

Compared with prior art; of the present invention simple in structure, its mattress surface can be identical substantially with the movement locus on human body back surface in playing unlucky moving process, avoided friction; and reduced moving of human body in the motion process to greatest extent, reached purpose of the present invention.

Description of drawings:

Accompanyingdrawing 1 is the structural representation of bed of the present invention;

Left-hand side view when accompanyingdrawing 2 is in the rise state for the present invention;

Accompanying drawing 3 is a partial enlarged drawing of the present invention;

Accompanying drawing 4 is a partial sectional view of the present invention.

The specific embodiment:

Embodiments of the invention 1: shown in accompanying drawing 1-4, drive motors (4) is housed on bedstead (2), drive motors (4) adopts the micromachine of band expansion link, is connected with a rotating shaft (6) and a power transmission shaft (9) on bedstead (2), and rotating shaft (6) and power transmission shaft (9) are rotatable.Respectively be welded with a support bar (13) at the two ends of rotating shaft (6), on the other end of every support bar (13), be connected with roller (15), and roller (15) is enclosed in the chute (3) that is welded on the bed board (1), roller (15) can roll in chute (3); Go up a welding crank (5) and a crank (24) in rotating shaft (6), the expansion link of crank (5) with drive motors (4) linked to each other, crank (24) is linked to each other with crank (23) on being welded on power transmission shaft (9) with bearing pin by connecting rod (10), respectively weld a crank (8) at the two ends of power transmission shaft (9), and crank (8) linked to each other with connecting rod (7) with bearing pin, the other end of connecting rod (7) is linked to each other with slide bar (20) on being welded on bed board (1) with bearing pin, opposite side at slide bar (20) and connecting rod (7) connecting place is equipped with pulley (22), and pulley (22) is enclosed in the arc groove (21) that is fixed on the bedstead (2), and pulley (22) can roll in arc groove (21).

When the expansion link of drive motors (4) shrank, pulling crank (5) rotated rotating shaft (6) forward, drove support bar (13) and passed through upwards jack-up bed board (1) of roller (15), and roller (15) rolls in chute (3) simultaneously.Rotating shaft (6) also drive crank (24) rotation and by connecting rod (10) backward throw crank (23) power transmission shaft (9) is rotated backward and pulls back slide bar (20) by crank (8), connecting rod (7), make pulley (22) rolling backward in groove (21) as the pivot of bed board (1), so, in bed board (1) makes progress rotating process, its rotating shaft is not on being fixed on a bit, but backward, move up.When bed board (1) need revert to horizontal level, the expansion link of drive motors (4) stretched out, and mechanism carries out contrary motion.In above-mentioned, roller (15) can be 1,2 or a plurality of, but considers from the stability and the cost of operation, is preferably 2; Drive motors (4) also can adopt employed manual telescoping mechanism parts on the manual telescoping mechanism finished product sold on the market or the common mechanical equipment.

Embodiments of the invention 2: drive motors (4) is housed on bedstead (2), is connected with a rotating shaft (6) and a power transmission shaft (9) on bedstead (2), rotating shaft (6) and power transmission shaft (9) are rotatable.Respectively weld a support bar (13) at the two ends of rotating shaft (6), on the other end of every support bar (13), be connected with rotating slide block (15), and slide block (15) is enclosed in the chute (3) that is welded on the bed board (1), slide block (15) can slide in chute (3); Go up a welding crank (5) and a crank (24) in rotating shaft (6), the expansion link of crank (5) with drive motors (4) linked to each other, crank (24) is linked to each other with crank (23) on being welded on power transmission shaft (9) with bearing pin by connecting rod (10), respectively weld a crank (8) at the two ends of power transmission shaft (9), and crank (8) linked to each other with connecting rod (7) with bearing pin, the other end of connecting rod (7) is linked to each other with slide bar (20) on being welded on bed board (1) with bearing pin, opposite side in slide bar (20) and connecting rod (7) junction is equipped with rotating slide block (22), and slide block (22) is enclosed in the arc groove (21) that is fixed on the bedstead (2), and slide block (22) can slide in arc groove (21).

Embodiments of the invention 3: drive motors (4) is housed on bedstead (2), is connected with a rotating shaft (6) and a power transmission shaft (9) on bedstead (2), rotating shaft (6) and power transmission shaft (9) are rotatable.Respectively weld a support bar (13) at the two ends of rotating shaft (6), on the other end of every support bar (13), be connected with roller (15), and roller (15) is enclosed in the chute (3) that is welded on the bed board (1), roller (15) can roll in chute (3); Go up a welding crank (5) and a crank (24) in rotating shaft (6), the expansion link of crank (5) with drive motors (4) linked to each other, crank (24) is linked to each other with crank (23) on being welded on power transmission shaft (9) with bearing pin by connecting rod (10), respectively weld a crank (8) at the two ends of power transmission shaft (9), and crank (8) linked to each other with connecting rod (7) with bearing pin, the other end of connecting rod (7) is linked to each other with slide bar (20) on being welded on bed board (1) with bearing pin, opposite side at slide bar (20) and connecting rod (7) connecting place is equipped with rotating slide block (22), and slide block (22) is enclosed in the arc groove (21) that is fixed on the bedstead (2), and slide block (22) can slide in arc groove (21).

Embodiments of the invention 4: drive motors (4) is housed on bedstead (2), is connected with a rotating shaft (6) and a power transmission shaft (9) on bedstead (2), rotating shaft (6) and power transmission shaft (9) are rotatable.Respectively weld a support bar (13) at the two ends of rotating shaft (6), on the other end of every support bar (13), be connected with rotating slide block (15), and slide block (15) is enclosed in the chute (3) that is welded on the bed board (1), slide block (15) can slide in chute (3); Go up a welding crank (5) and a crank (24) in rotating shaft (6), the expansion link of crank (5) with drive motors (4) linked to each other, crank (24) is linked to each other with crank (23) on being welded on power transmission shaft (9) with bearing pin by connecting rod (10), respectively weld a crank (8) at the two ends of power transmission shaft (9), and crank (8) linked to each other with connecting rod (7) with bearing pin, the other end of connecting rod (7) is linked to each other with slide bar (20) on being welded on bed board (1) with bearing pin, opposite side in slide bar (20) and connecting rod (7) junction is equipped with pulley (22), and pulley (22) is enclosed in the arc groove (21) that is fixed on the bedstead (2), and pulley (22) can roll in arc groove (21).

Claims (5)

1. the mechanism for lifting back of a bed, it comprises the drive motors (4) that is contained on the bedstead (2), it is characterized in that: on bedstead (2), be connected with rotating shaft (6) and power transmission shaft (9), be fixed with support bar (13) at the two ends of rotating shaft (6), the other end of support bar (13) is connected on the bed board (1); Also be fixed with crank (5) and crank (24) in rotating shaft (6), crank (5) links to each other with the expansion link of drive motors (4), and crank (24) links to each other with crank (23) on being fixed on power transmission shaft (9) by connecting rod (10); Be fixed with crank (8) at the two ends of power transmission shaft (9), crank (8) links to each other with slide bar (20) by connecting rod (7), and an end of slide bar (20) is fixed on the bed board (1), and the other end is connected again on the bedstead (2).

2. according to the mechanism for lifting back of the described bed of claim 1, it is characterized in that: be connected with roller (15) on the other end that is fixed in the support bar (13) in the rotating shaft (6), roller (15) is enclosed in the chute (3) that is fixed on the bed board (1).

3. according to the mechanism for lifting back of the described bed of claim 1, it is characterized in that:

Slide bar (20) is connected with pulley (22) at the opposite side of an end that is connected with connecting rod (7), and pulley (22) is enclosed in the arc groove (21) that is fixed on the bedstead (2).

4. according to the mechanism for lifting back of any described electricity bed among the claim 1-3, it is characterized in that: roller (15) and pulley (22) also can be rotating slide block.

5. according to the mechanism for lifting back of the described bed of claim 1, it is characterized in that: drive motors (4) also can be manual telescoping mechanism.

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