CN2354540Y

CN2354540Y - Electric hospital bed

Info

Publication number: CN2354540Y
Application number: CN 98231683
Authority: CN
Inventors: 彭会谋; 龚曙安
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-11-20
Filing date: 1998-11-20
Publication date: 1999-12-22
Anticipated expiration: 2008-11-20

Abstract

The utility model belongs to the technical field of hospital beds, particularly an electric hospital bed. The electric hospital bed comprises a bed head, a bed frame, an upper body moving bed plate, an upper leg moving bed plate, a lower leg moving bed plate and a fixed bed plate, wherein, a sector shaft is respectively in rigid connection with the upper body moving bed plate and the upper leg moving bed plate and is supported by a bearing and engaged with a gear arranged on a pinion shaft. The pinion shaft and a worm gear arranged in a worm gear box are combined into a whole. The worm gear is engaged with a worm screw which is connected with an output shaft of a motor. The motor and a control box of a circuit are in electric connection. The utility model has the advantages of simple structure, light weight, low cost, convenient operation, and stable raising and lowering of the bed plate.

Description

Electric hospital bed

This utility model belongs to the sick bed technical field, relates to a kind of electric hospital bed.

The manual sick bed that present domestic hospital uses, utilize feed screw nut to promote or the pulling linkage, realize the rising or the reduction at some position of sick bed, this manual sick bed operation effort, patient generally can not make patient be difficult to obtain a kind of comfortable position from line operate.Though have a kind of electric hospital bedly abroad, structure is very complicated, involves great expense, and therefore is difficult to promote the use of.

The purpose of this utility model is to provide a kind of patient can be from line operate, safe and reliable, simple in structure, cost is low, be convenient to promote electric hospital bed.

The purpose of this utility model realizes with the following methods, this the electric hospital bed head of a bed, bedstead, upper body mobile bed plate, thigh mobile bed plate, shank mobile bed plate, fixed bed board of comprising, have sector shaft respectively with upper body mobile bed plate, thigh mobile bed plate rigid attachment, sector shaft is by bearings, gears engaged on sector gear and the pinion shaft, worm gear in pinion shaft and the worm gear case is an integral body, worm gear and worm engaging, worm screw is connected with the output shaft of motor, and motor and circuit control box electrically connect.Below in conjunction with the embodiment accompanying drawing this utility model is described in further detail.

Fig. 1 this utility model structure perspective view;

Fig. 2 this utility model fundamental diagram;

Fig. 3 is the vertical view of Fig. 2;

The small-sized hinge shaft coupling of Fig. 4 (16) structure chart;

Fig. 5 is the A-A cutaway view of Fig. 4;

Fig. 6 worm gear case assembling longitudinal sectional view;

Fig. 7 worm gear case assembling transverse sectional view;

The manual part assembly drawing of Fig. 8;

Fig. 9 circuit control principle figure.

Among the figure: 1,9-head of a bed 2-upper body mobile bed plate 5-bedstead

7-thigh mobile bed plate 8-shank mobile bed plate 3,6-sector shaft

4,18,22,51-bearing 10,11-handle 12,20-worm gear case

13,27-motor (D1, D2) 14-fixed bed board 15-handle

The small-sized hinge shaft coupling of 16-17-limit switch (K5, K6, K7, K8, K9, K10)

19-circuit control box 21-hand-held crawl switch enclosure 23-end face tooth-like clutch

24-worm gear 25-worm screw 26-pinion shaft

28,29-manual transmission bar 30,33,34-sleeve 31-riveting axle

32-pin bushing 35-lateral pin 36-crosshead

37,38-key 39-mandrel 40-roller

41,50,52-pulley 42-sliding sleeve 43,44-zygote

45-pulley base 46-framework 47-shift fork

The little axle of 48-extension spring 49-53-backguy

The little axle of 54-handle base 55-56-screw

57,58-sector gear 59-keyway 60-batten

C1, C2-electric capacity J1, J2, J3, J4-relay B-transformator

K1, K2, K3, K4-point driving switch

Operation principle of the present utility model is: place the bed board of bedstead (5) top to be divided into upper body mobile bed plate (2), fixed bed board (14), thigh mobile bed plate (7), shank mobile bed plate (8), fixed bed board directly is fixed on the bedstead (5).Since upper body mobile bed plate (2), thigh mobile bed plate (7) respectively with sector shaft (3,6) rigid connection, can rotate around the centrage that is fixed on the bearing (4) on the bedstead (5).Shank mobile bed plate (8) links to each other by the free end of hinge with thigh mobile bed plate (7).When patient needs changing position, can directly use hand-held crawl switch enclosure (21), the corresponding button of flicking, thigh mobile bed plate (7) or upper body mobile bed plate (2) move at once: rise or descend, release button then stops operating voluntarily, referring to Fig. 9, presses point driving switch K1, relay J 1 work, motor (D1) just changes, unclamp crawl K switch 1, motor (D1) quits work, and presses point driving switch K2, relay J 2 work, motor (D1) counter-rotating.In like manner press point driving switch (K4), relay J 3 work, motor (D2) just changes, and unclamps point driving switch (K4), motor (D2) quits work, press point driving switch K3, relay J 4 work, motor D2 counter-rotating, motor (D1 or D2) just changes, bed board (2 or 8) rises, the motor counter-rotating, and then bed board descends.

This utility model is equipped with mandrel (39) and roller (40) on the tank wall of worm gear case (12), the inner cylinder face on the external cylindrical surface of roller and the sector gear wheel rim is close to, thereby can guarantee the positive engagement of sector gear (57,58) and pinion shaft (26).The output shaft of motor (13,27) adopts hinge shaft coupling (16) with being connected of worm screw (25), this shaft coupling is made up of sleeve (30,33,34), crosshead (36), lateral pin (35), riveting axle (31), pin bushing (32), adopt small-sized hinge shaft coupling (16), reduced the inflexible requirement of bedstead, the favourable weight that alleviates sick bed reduces the requirement to installing.

Electric-powered drive path is: motor (D1 or D2) by the key of output shaft with being connected of keyway (59) power is reached small-sized hinge shaft coupling (16) on the small-sized hinge shaft coupling (16), drive worm screw (25), worm gear (24) by key (38) again, by key (37) the driven gear axle (26) on the worm gear (24), again by the gear of gear shaft (26) by with the engagement of sector gear (57 or 58), power is reached sector shaft (3 or 6), make upper body mobile bed plate (2) or thigh mobile bed plate (7) produce motion at last.Sector shaft is equipped with batten (60) on (3,6), play position-limiting action (please referring to Fig. 6), when the A face of batten (60) is oppressed limit switch (K5 or K10) with sector gear (57,58) motion, during B face compressing limit switch (K6 or K9), motor (D1 or D2) can only start by contrary original direction.Therefore upper body mobile bed plate (2), thigh mobile bed plate (7) can only rotate in certain angular range, surpass the limit of setting, and motor quits work voluntarily, when restarting, and can only be to rotating with original opposite direction.The rotational limitation angle of setting in the present embodiment is 90 °.

This utility model also is provided with manual part, referring to Fig. 8.Manual transmission bar (28 is arranged, 29) be connected with worm screw (25) by end face tooth-like clutch (23), manual transmission bar (28,29) adopt light-wall pipe, have groove on it, pulley (50 is housed in the groove, 52), the pulley base (45) that pulley (41) are housed is fixed on the framework (46) of bedstead (5), little axle (49) and extension spring (48) also are housed on the framework (46), there is shift fork (47) to be enclosed within on the little axle (49), and be connected with extension spring (48), the backguy (53) that has the sliding sleeve (42) that contacts with shift fork (47) to be bypassed pulley (41) is held, the other end of backguy (53) ties up on the handle base (54), and handle base (54) is assemblied in manual transmission bar (28,29) on the little axle (55) on the handle (15).The drive path of manual power is: handgrip (10,11) places manual position (position shown in Fig. 8 dotted line), backguy (53) is by the guiding of pulley (52,50,41), pulling sliding sleeve (42) is moved to the left, and zygote (44) is moved to the left simultaneously, meshes with zygote (43).Shake handle, upper body mobile bed plate (2) or thigh mobile bed plate (7) are promptly done corresponding the rotation.In the time of manually, the G face of shift fork (47) compressing limit switch (K7 or K8) causes circuit breaker, and motor this moment (D1 or D2) can not start (referring to Fig. 9).Manually stop, handle automatically resets by the pulling force of deadweight and extension spring (48).Extension spring pulling shift fork (47) moves to right, and sliding sleeve (42) drives zygote (44) and moves to right, and throws off zygote (43), and limit switch (K7 or K8) resets.

The utlity model has that the rotatable angle of simple in structure, in light weight, bed board is big, rising or smooth decreasing, cost is low, and is easy to maintenance, both can electronic, also can be manual, power consumption is few.Hospital be can be widely used in and bed, operation bed, home care bed etc. used as patient.

Claims

1, a kind of electric hospital bed, comprise the head of a bed (1,9), bedstead (5), upper body mobile bed plate (2), thigh mobile bed plate (7), shank mobile bed plate (8), fixed bed board (4), it is characterized in that having sector shaft (3,6) respectively with upper body mobile bed plate (2), thigh mobile bed plate (7) rigid attachment, sector shaft (3,6) by bearing (4,6) support, sector gear (57,58) with pinion shaft (26) on gears engaged, worm gear (24) in pinion shaft (26) and the worm gear case (12) is an integral body, worm gear (24) and worm screw (25) engagement, worm screw (25) and motor (13,27) output shaft connects, motor (13,27) electrically connect with circuit control box (19).

2, according to claim 1 electric hospital bed, it is characterized in that on the tank wall of worm gear case (12), being equipped with mandrel (39) and roller (40), the inner cylinder face on the external cylindrical surface of roller and the sector gear wheel rim is close to.

3, according to claim 1 electric hospital bed, the output shaft that it is characterized in that motor adopts hinge shaft coupling (16) with being connected of worm screw (25), and this shaft coupling is made up of sleeve (30,33,34), crosshead (36), lateral pin (35), riveting axle (31), pin bushing (32).

4, according to claim 1 electric hospital bed, it is characterized in that having manual transmission bar (28,29) be connected with worm screw (25) by end face tooth-like clutch (23), manual transmission bar (28,29) adopt light-wall pipe, have groove on it, pulley (50 is housed in the groove, 52), the pulley base (45) that pulley (41) are housed is fixed on the framework (46) of bedstead (5), little axle (49) and extension spring (48) also are housed on the framework (46), there is shift fork (47) to be enclosed within on the little axle (49), and be connected with extension spring (48), the backguy (53) that has the sliding sleeve (42) that contacts with shift fork (47) to be bypassed pulley (41) is held, the other end of backguy (53) ties up on the handle base (54), and handle base (54) is assemblied in manual transmission bar (28,29) on the little axle (55) on the handle (15).