CN2650743Y

CN2650743Y - Bar pressed liftable bed

Info

Publication number: CN2650743Y
Application number: CN 03237316
Authority: CN
Inventors: 吴国秋; 郑祖斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-09-05
Filing date: 2003-09-05
Publication date: 2004-10-27
Anticipated expiration: 2013-09-05

Abstract

The utility model discloses a lever-operated lifting bed, which comprises two bed frames and a level bed frame erected between the two bed frames, wherein, the legs, upper rod, and lower rod on the bed frames can be driven by a screw rod and nut mechanism to move up and down, and the level bed frame can move up and down along with the bed frames; the screw rod is driven by an electric motor or a lever manually to drive the nut mechanism to move up and down axially; the utility model is characterized in: the nut mechanism on the screw rod is hinged to the middle part of a cross rod, and the two ends of the cross rod press the top surfaces of two movable support legs that are fitted in the legs. When the nut mechanism move up or down axially, the legs will be moved up and down by means of the press wheels on the ends of the cross rod. When the nut mechanism moves up or down axially along the screw rod and meets the upper block or lower block, the nut in the nut mechanism will stop and rotate with the screw rod automatically while the screw rod continues rotating, and therefore the cross rod will stop automatically, so as to avoid overload. Therefore, the utility model is simple in structure and easy to use.

Description

Bar pressure type lifting bed

Affiliated technical field:

This utility model relates to a kind of lifting bed, specifically, relates to a kind of lifting bed or therapeutic medical lifting bed of the usefulness of living.

Background technology:

The lifting bed is used more in medical treatment, and use in life is less.Common lifting bed is by artificial hand lifting.It mainly is made up of two fan bedsteads and a level bed frame.Feed screw nut's elevating mechanism is located at the center of every fan bedstead, by rotating crank, the bevel gear rotation of pair of meshing is driven thereby make with the co-axial screw mandrel of one of them bevel gear, drive nut and promote the footpost of bedstead, do elevating movement with respect to cabinet base and framework thereof.This structure is bigger because of the feed screw nut gap, and footpost is crooked with respect to cabinet base, discontinuity, the resistance of motion is bigger, often therefore " get stuck " and noise big.

For addressing the above problem, existing a novel " suspension lifting bed ", its construction features is to hang up two steel wire ropes on lift nut seat both sides, changes direction by fixed pulley, with the other end of two steel wire ropes be fixed on the cabinet base end face steady pin on.Moving up and down of screw mandrel top nut by two steel wire ropes, makes the lifting of footpost do with respect to cabinet base.But this device is owing to employing steel wire rope and fixed pulley, thereby structure is complicated.

Summary of the invention:

The purpose of this utility model provides a kind of bar pressure type lifting bed of movable leg end face stress equalization.The purpose of this utility model is to realize like this, described bar pressure type lifting bed, be made of a level bed frame that sets up between two fan bedsteads and the two fan bedsteads, every fan bedstead is made of upper boom, lower beam and two supporting legs and movable leg again, and movable leg is set in the supporting leg; The supporting leg of bedstead and upper boom, lower beam can be done elevating movement by the effect of screw mandrel, nut body, and the level bed frame can the lifting with bedstead; Screw mandrel is by motor or manually rotate the crank driving, and screw mandrel rotates the drive nut body and axially moves up and down; Its construction features is that nut body and the cross bar on the screw mandrel is hinged at the middle part of cross bar, and the two ends of cross bar are pressed in respectively on the end face that is set in two movable legs in the supporting leg.The purpose of this utility model also can be achieved through the following technical solutions, described bar pressure type lifting bed, and its characteristics are that the two ends of cross bar are pinch roller, pinch roller is assembled together by bearing pin and cross bar, and is pressed in respectively on the end face of movable leg.Described bar pressure type lifting bed, its characteristics are that nut body and cross bar are hinged in center, and pinch roller center, cross bar two ends equates with the distance at hinged center.Described bar pressure type lifting bed, its characteristics are that the upper and lower faces of the barrel nut in the nut body is respectively installed an annular friction sheet, and compress with the pressing plate above the overcoat, and it compresses degree and is regulated by soket head cap screw; Cross bar is hinged by bearing pin and hinged seat, and hinged seat is fixed on the bottom of nut overcoat with soket head cap screw; At the highest, the minimum extreme position of nut body motion, will go up link stopper respectively with straight pin and be fixed on the screw mandrel with following link stopper.This utility model is because the midpoint of a nut body and a cross bar is hinged, the pinch roller at the two ends of cross bar is pressed in respectively on the end face that is set in two movable legs in the supporting leg, nut body axially move down or on when moving, pinch roller by cross bar and cross bar two ends, supporting leg is along with lifting, because the nut body of cross bar on midpoint and screw mandrel is hinged, is isostatic so the cross bar two ends act on the power of leg end face.Again since nut body along screw axis to moving to the highest or extreme lower position, when promptly colliding with last block or following block, though screw mandrel continues rotation, but move or move down on the nut in the nut body has stopped, and together rotate with screw mandrel automatically, like this, cross bar has also just stopped rising or descending motion automatically, has avoided overload.Thereby the utlity model has characteristics such as simple in structure, easy to use.

Description of drawings:

Fig. 1 is the structural representation of single fan bedstead of the present utility model.

Fig. 2 is the structural representation of screw mandrel of the present utility model, nut body.

Fig. 3 is the left view of Fig. 2.

Fig. 4 is the A-A cutaway view of Fig. 2.

Fig. 5 is the B-B cutaway view of Fig. 2.

Among the figure: movable leg 1, bearing pin 2, pinch roller 3, supporting leg 4, upper boom 5, cross bar 6, nut body 7, screw mandrel 8, last block 9, straight pin 10, bearing pin 11, straight pin 12, following link stopper 13, lower beam 14, pressing plate 15, barrel nut 16, overcoat 17, friction plate 18, soket head cap screw 19, hinged seat 20, soket head cap screw 21, sunk screw 22, top board 23

The specific embodiment:

Below in conjunction with accompanying drawing this utility model is elaborated:

This utility model is made of two fan bedsteads and a level bed frame of vertical placement.Every as shown in Figure 1 fan bedstead is made of upper boom 5, lower beam 14 and two supporting legs 4, movable leg 1 and movable castors (not drawing among the figure) again, and movable leg 1 is set in the supporting leg 4.Two supporting legs and upper boom 5, lower beam 14 can be done elevating movement by the effect of screw mandrel 8, nut body 7, and the level bed frame is installed on the supporting leg outsides (not drawing among the figure) of two fan bedsteads of vertical placement, can the lifting with bedstead.This bedstead is with motor or manually rotate crank and drive, screw mandrel is rotated and promote the bedstead lifting, this lifting action is to drive 6 realizations of a cross bar hinged with it by the screw mandrel 8 of bedstead center, nut body 7.The two ends of cross bar 6 are pinch roller 3, and it is assembled together by bearing pin 2 and cross bar 6, and is pressed on the end face of movable leg 1.Nut body 7 axially move down or on move, supporting leg and level bed frame risen or descend.Because cross bar 6 is hinged by bearing pin 11 in midpoint and nut body 7, so the power that cross bar 6 two ends act on movable leg 1 end face is isostatic.As Fig. 2, Fig. 3, Fig. 4 and shown in Figure 5, the round nut 16 in screw mandrel 8 and the nut body 7 constitutes worm drive.The upper and lower faces of barrel nut 16 is respectively installed an annular friction sheet 18, and friction plate 18 is compressed by the pressing plate on the overcoat 17 15 with barrel nut 16, and it compresses degree and is regulated by four soket head cap screws 19.If the locus allows, cross bar 6 can be contained in outside the overcoat 17 and be hinged with it by bearing pin, but this example is that cross bar 6 is articulated in the outside of hinged seat 20 by bearing pin 11, and hinged seat 20 usefulness soket head cap screws 21 are fixed on the bottom of nut overcoat 17.At the highest minimum extreme position of nut body 7 motion, promptly with or when block is collided down, will go up block 9 respectively, descend link stopper 13 to be fixed on the screw mandrel with

straight pin

10,12.

During adjustment, the sunk screw 22 of outwarding winding earlier will be carried on the top board 23, with four soket head cap screws 19 of the even turn of Allen wrench, frictional force between adjustment nut 16 and the friction plate 18 makes nut 16 can drive whole nut body 7 between last lower terminal position and cross bar 6 is done upper and lower displacement.And in extreme positions, nut 16 can not make nut body continue axial displacement again, this moment nut 16 about both ends of the surface should with friction plate 18 between produce relative slip, while nut 16 is followed screw mandrel 8 automatically and is rotated together.After frictional force between nut 16 and the friction plate 18 is adjusted, again top board 23 is pressed on the end face of four soket head cap screws 19, and fastening with two sunk screws 22.

Claims

1, a kind of bar pressure type lifting bed is made of a level bed frame that sets up between two fan bedsteads and the two fan bedsteads, and every fan bedstead is made of upper boom (5), lower beam (14) and two supporting legs (4) and movable leg (1) again, and movable leg (1) is set in the supporting leg (4); Supporting leg of bedstead (4) and upper boom (5), lower beam (14) can be done elevating movement by the effect of screw mandrel (8), nut body (7), and the level bed frame can the lifting with bedstead; Screw mandrel (8) is by motor or manually rotate the crank driving, and screw mandrel rotates the drive nut body and axially moves up and down; It is characterized in that the nut body (7) on the screw mandrel (8) is hinged at the middle part of cross bar with cross bar (6), the two ends of cross bar (6) are pressed in respectively on the end face that is set in two movable legs (1) in the supporting leg (4).

2, bar pressure type lifting bed according to claim 1, the two ends that it is characterized in that cross bar (6) are pinch roller (3), pinch roller (3) is assembled together by bearing pin (2) and cross bar (6), and is pressed in respectively on the end face of movable leg (1).

3, bar pressure type lifting bed according to claim 1 and 2 it is characterized in that nut body (7) and cross bar (6) are hinged in center, and pinch roller center, cross bar (6) two ends equates with the distance at hinged center.

4, bar pressure type lifting bed according to claim 1 and 2, the upper and lower faces that it is characterized in that the barrel nut (16) in the nut body (7) is respectively installed an annular friction sheet (18), and compress with the pressing plate (15) above the overcoat (17), it compresses degree and is regulated by soket head cap screw (19); Cross bar (6) is hinged by bearing pin (11) and hinged seat (20), and hinged seat (20) is fixed on the bottom of nut overcoat (17) with soket head cap screw (21); At the highest, the minimum extreme position of nut body (7) motion, will go up link stopper respectively with straight pin and be fixed on the screw mandrel (8) with following link stopper.