CN2532836Y

CN2532836Y - Electric multifunctional bed

Info

Publication number: CN2532836Y
Application number: CN 02205255
Authority: CN
Inventors: 张文儒; 张玉杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-03-11
Filing date: 2002-03-11
Publication date: 2003-01-29
Anticipated expiration: 2012-03-11

Abstract

An electric multi-functional bed relates to a bed with care equipment, which comprises an upper bed that is driven through a motor and can be folded or set flat, a lower bed which is linked with the upper bed and can be in bending descent, a bed pan valve switchover driven through a motor, and a manual rotary dining table. The bed is applicable for the bedridden patients, the disabled or the mobility-handicapped elderly. The control of the change of self-sitting lying and the relieving on bed through switch, and the bed also offer convenience for eating, reading and writing in bed.

Description

The multifunctional electric bed

This utility model relates to a kind of multifunctional electric bed, particularly is fit to the multifunctional electric bed that the bed patient uses, and belongs to the bed technique field of being with care appliances.

The bed accessory that domestic and international at present suitable bed patient uses has hand-rail type rising and falling bed, and is especially very universal in hospital, seldom is applied in family, and this bed accessory has simple structure, sturdy and durable, but exists function few, and lifting needs defectives such as other people help.

The purpose of this utility model is at above-mentioned deficiency, provide a kind of suitable domestic. applications by motor-driven with on-off control can sit up voluntarily peace crouch, can be in bed voluntarily defecation, can easily read a book in bed, write and the last multifunctional electric bed accessory of food and drink of bed.

Flesh and blood of the present utility model is as follows:

The multifunctional electric bed includes: bedstead (1), motor-driven mechanism (2), the combination of more piece bed board (3), bedpan valve inversion mechanism (4), revolution table (5), bed board lift (6); It is characterized in that: bedstead (1) is positioned at the bottom, as supporting and install each workpiece; Motor-driven mechanism (2) is installed in the middle part of bedstead (1), the power of the motor expanding-contracting action by leading screw screw telescoping mechanism (8) is driven rising and falling of more piece bed board combination (3), the power of motor is replaced by bedpan (27), the valve (26) that rotatablely moving of universal drive shaft (9) drives bedpan valve inversion mechanism (4); Bed board lift (6) mainly comprises: big rocking arm (11), small rocker (17), a stalk (15); Its middle part of big rocking arm (11) is provided with Xiao's axis hole, connects with Xiao's axle (C) and bedstead (1) strand, its upper support upper bed board (10), its lower end a bit connects with the end strand of Xiao's axle (A) with leading screw screw telescoping mechanism (8), big rocking arm (11) is that the center of circle is back and forth shaken with Xiao's axle (C) under the driving of leading screw screw telescoping mechanism (8); Its top one end of small rocker (17) connects with Xiao's axle (F) and bedstead (1) strand, the other end is as supporting lower bed board (19), its underpart and pole (15) strand connects, the other end of pole (15) connects with a bit (B) strand of the lower end of big rocking arm (11), at big rocking arm (11) when shaking, by the transmission of pole (15), small rocker (17) is also corresponding to be shaken; More piece bed board combination (3) is positioned at the top of bedstead (1), includes: upper bed board (10), rebound (13), middle bed board (14), lower bed board (19), extension plate (24), flap (22), connecting rod (21); In bed board (14) one sides connect with Xiao's axle (E) and bedstead (1) strand, opposite side is connected on Xiao's axle (D) on the big rocking arm (11) with slotted hole (12), middle bed board (14) can shaking and swing up and down around Xiao's axle (E) with big rocking arm (11); Upper bed board (10) can be turned up or set level along with shaking of big rocking arm (11), and lower bed board (19) can shaking and keep flat or following folding with small rocker (17); Bedpan bed valve inversion mechanism (4) be fixed on middle bed board (14) below, valve on it (26) or bedpan (27) therefrom stretch out in the square hole (I) of bed board (14); Revolution table (5) is connected on the bedstead (1) with Xiao's axle (G) strand, and under spacing Xiao's cooperation, desktop (7) can be stabilized on the horizontal or vertical position.

More piece bed board combination (3) periphery is provided with convex shoulder (25), be fixed with flap (22) below the convex shoulder (25), with flap (22) with upper bed board (10), rebound (13), middle bed board (14), lower bed board (19), the both sides of extension plate (24) connect, middle bed board (14) bottom is provided with fixedly ear (16), extension plate (24) bottom is provided with fixedly ear (23), the two ends of connecting rod (21) respectively with fixing ear (16), fixedly ear (23) strand connects, middle bed board (14), lower bed board (19), extension plate (24), connecting rod (21) is formed quadric chain, makes extension plate (24) and middle bed board (14) keep corresponding angle.

The bottom of the small rocker (17) in the bed board lift (6) is fixed with arc (18), and the neighboring of arc (18) has notch (H), and ratchet (20) one ends connect with Xiao's axle and bedstead (1) strand; Pole (15) is made up of internal core rod, trocar sheath, can extend, when ratchet (20) is done counterclockwise to swing, its most advanced and sophisticated and notch (H) engagement, restriction arc (18) clockwise direction rotates, when big rocking arm (11) when shaking clockwise, because arc (18) is blocked by ratchet (20), pole (15) is in elongation state, and small rocker (17) can keep lower bed board (19), extension plate (24) to be parked in horizontal level.

Bedpan valve inversion mechanism (3) comprising: trapped orbit (28), movable stand (29), moving track (30), bedpan carriage (31), bedpan (27), valve carriage (32), valve (26), gear (33), gear shaft (34); Trapped orbit (28) is " T " font, there is channel suspending rail (40) in the outside of its horizontal component, channel suspending rail (40) two ends are fixed with block (41), and there is limiting plate (38) inboard, and there is a notch (37) at limiting plate (38) middle part, its vertical component is column plate (36), the bottom of column plate (36) is provided with axis hole (J), and trapped orbit (28) is formed by two, is positioned at the outermost of bedpan valve inversion mechanism (3), and by last gusset piece (39), second line of a couplet fishplate bar (35) is fixed as an integral body; Movable stand (29) is the cube structure frame, and the outside, both sides is provided with upper roller (42), and two medial surface are provided with vertical channel suspending rail (43), have slotted hole (k) on the inwall of vertical channel suspending rail (43), and the inner wall outside face is equipped with middle roller (44); Movable stand (29) is installed in the inboard of trapped orbit (28), roll in channel suspending rail (40) by upper roller (42), movable stand (29) is moved horizontally in trapped orbit (28), when movable stand (29) moves by side to upper roller (42) by block (41) when blocking to one, vertical channel suspending rail (43) is over against notch (37), when movable stand (29) moves to upper roller (42) by opposite side block (41) when blocking to opposite side, the vertical channel suspending rail (43) of opposite side is also over against notch (37); Bedpan carriage (31) comprising: crossbeam (49), slide block (46), internal trolley (45), bottom roller (47), and slide block (46) is being fixed in crossbeam (49) both sides, and internal trolley (45) is equipped with on slide block (46) top, and bottom roller (47) is equipped with in the bottom; Bedpan carriage (31) is installed in the side in the movable stand (29), cooperates with vertical channel suspending rail (43) by slide block (46), and bedpan carriage (31) can only be moved both vertically in movable stand (29), can not horizontal displacement; Internal trolley (45) rolls in the lower edge of limiting plate (38); Valve carriage (32) is installed in the opposite side in the movable stand (29), its structure is identical with the structure of bedpan carriage (31), when internal trolley (45) when the lower edge of limiting plate (38) straightway rolls, bedpan carriage (31) and valve carriage (32) all can not move upward, can be along with movable stand (29) horizontal movement together, when internal trolley (45) over against or when entering groove (37), bedpan carriage (31) or valve carriage (32) can move both vertically in adjustable shelf (29); Moving track (30) is by straight trough shape track (52), curved channel suspending rail (53), tooth bar (54) formations that be fixed as one, and bending channel suspending rail (53) stage casing is level, and the both sides section is for being inclined upwardly; Moving track (30) is formed by two, is contained in movable stand (29) two lateral surface respectively, straight trough shape track (52) and movable stand (29) outside two in roller (44) cooperates, bend channel suspending rail (53) and cooperate with bottom roller (47) on two slide blocks (46); Tooth bar (54) and gear (33) engagement; Gear shaft (34) is installed in the axis hole (J), is fixed with gear (33) on it, gear (33) and tooth bar (54) engagement; When gear shaft (34), gear (33) when rotating together, gear (33) driving rack (54) makes moving track (30) moving linearly.

Another kind of assembling mode of the present utility model: no bedpan dodge gate inversion mechanism (4), the no square hole of middle bed board (14) (I); Slotted hole (12) is fixing with bedstead (1); Motor-driven mechanism (2) is removed universal drive shaft (9), and two leading screw screw telescoping mechanisms (8) are installed, and one drives big rocking arm (11), and another drives small rocker (17), and small rocker (17) can upwards be turned up lower bed board (19) or set level.Remove pole (21).

The utility model has the advantages that: patient by on-off control can realize sitting voluntarily conversion for sleeping in, bed is gone up characteristics such as defecation, automaticity height, perfect in shape and function, cost be low, easy to use voluntarily.

Accompanying drawing of the present utility model is as follows:

Accompanying drawing 1 is the longitudinal section that multifunctional electric bed upper bed board is turned up, lower bed board is folded down, bedpan stretches out state;

Accompanying drawing 2 is for bed board is set level, bedpan reset mode view

Accompanying drawing 3 is a bedpan valve inversion mechanism view;

Accompanying drawing 4 is turned up the view of state for the more piece bed board of the another kind of assembling mode of multifunctional electric bed;

1 is bedstead among the figure, and Fig. 2 is a motor-driven mechanism, and Fig. 3 is the combination of more piece bed board, Fig. 4 is a bedpan valve inversion mechanism, and Fig. 5 is the revolution table, and Fig. 6 is the bed board lift, Fig. 7 is a desktop, and Fig. 8 is a leading screw screw telescoping mechanism, Fig. 9 position universal drive shaft, Figure 10 is a upper bed board, and Figure 11 is big rocking arm, and Figure 12 is a slotted hole, Figure 13 is a rebound, and Figure 14 is middle bed board, and Figure 15 is a pole, Figure 16 is fixing ear, and Figure 17 is a small rocker, and Figure 18 is an arc, Figure 19 is a lower bed board, and Figure 20 is a ratchet, and Figure 21 is a connecting rod, Figure 22 is a flap, and Figure 23 is fixing ear, and Figure 24 is an extension plate, Figure 25 is a convex shoulder, and Figure 26 is a valve, and Figure 27 is a bedpan, Figure 28 is a trapped orbit, and Figure 29 is a movable stand, and Figure 30 is a moving track, Figure 31 is the bedpan carriage, and Figure 32 is the valve carriage, and Figure 33 is a gear, Figure 34 is a gear shaft, and Figure 35 is a second line of a couplet fishplate bar, and Figure 36 is the column plate, Figure 37 is a notch, Figure 38 is a limiting plate, and Figure 39 is last gusset piece, and Figure 40 is a channel suspending rail, Figure 41 is a block, Figure 42 is a upper roller, and Figure 43 is vertical channel suspending rail, and Figure 44 is middle roller, Figure 45 is an internal trolley, Figure 46 is a slide block, and Figure 47 is a bottom roller, and Figure 48 is a roller shaft, Figure 49 is a crossbeam, Figure 50 is the bedpan box, and Figure 51 is a supporting plate, and Figure 52 is a straight trough shape track, Figure 53 is curved channel suspending rail, Figure 54 is a tooth bar, and figure A is Xiao's axle, and figure B connects point for strand, figure C is Xiao's axle, figure D is Xiao's axle, and figure F is Xiao's axle, and figure G is Xiao's axle, figure H is a notch, figure I is a square hole, and figure J is an axis hole, and figure K is a slotted hole.

Introduce embodiment below in conjunction with accompanying drawing:

The multifunctional electric bed comprises: bedstead (1), motor-driven mechanism (2), the combination of more piece bed board (3), bedpan valve inversion mechanism (4), revolution table (5), bed board lift (6); Bedstead (1) is positioned at the bottom, as supporting and install each workpiece; Motor-driven mechanism (2) is installed in the middle part of bedstead (1), the power of the motor expanding-contracting action by leading screw screw telescoping mechanism (8) is driven rising and falling of more piece bed board combination (3), the power of motor is replaced by bedpan (27), the valve (26) that rotatablely moving of universal drive shaft (9) drives bedpan valve inversion mechanism (4); Bed board lift (6) mainly comprises: big rocking arm (11), small rocker (17), a stalk (15); Its middle part of big rocking arm (11) is provided with Xiao's axis hole, connects with Xiao's axle (C) and bedstead (1) strand, its upper support upper bed board (10), and its lower end a bit connects with the end strand of Xiao's axle (A) with leading screw screw telescoping mechanism (8); Big rocking arm (11) leading screw screw telescoping mechanism (8) driving under, be that the center of circle is back and forth shaken with Xiao's axle (C); Its top of small rocker (17) one end with Xiao's axle (F) and bedstead (1) strand connect, the other end is as supporting lower bed board (19), its underpart and pole (15) strand connects, the other end of pole (15) connects with a bit (B) strand of the lower end of big rocking arm (11), at big rocking arm (11) when shaking, by the transmission of pole (15), small rocker (17) is also corresponding to be shaken; More piece bed board combination (3) is positioned at the top of bedstead (1), includes: upper bed board (10), rebound (13), middle bed board (14), lower bed board (19), extension plate (24), flap (22), connecting rod (21); In bed board (14) one sides connect with Xiao's axle (E) and bedstead (1) strand, opposite side is connected on Xiao's axle (D) on the big rocking arm (11) with slotted hole (12), middle bed board (14) can shaking and swing up and down around Xiao's axle (E) with big rocking arm (11); Upper bed board (10) can be turned up or set level along with the face that shakes of big rocking arm (11), and lower bed board (19) can shaking and keep flat or following folding with small rocker (17); Bedpan bed valve inversion mechanism (4) be fixed on middle bed board (14) below, valve on it (26) or bedpan (27) therefrom stretch out in the square hole (I) of bed board (14); Revolution table (5) is connected on the bedstead (1) with Xiao's axle (G) strand, and under spacing Xiao's cooperation, desktop (7) can be stabilized on the horizontal or vertical position.

More piece bed board combination (3) periphery is provided with convex shoulder (25), be fixed with flap (22) below the convex shoulder (25), with flap (22) with upper bed board (10), rebound (13), middle bed board (14), lower bed board (19), the both sides of extension plate (24) connect, middle bed board (14) bottom is provided with fixedly ear (16), extension plate (24) bottom is provided with fixedly ear (23), the two ends of connecting rod (21) respectively with fixing ear (16), fixedly ear (23) strand connects, middle bed board (14), lower bed board (19), extension plate (24), connecting rod (21) is formed quadric chain, makes extension plate (24) and middle bed board (14) keep corresponding angle.The bottom of the small rocker (17) in the bed board lift (6) is fixed with arc (18), and the neighboring of arc (18) has notch (H), and ratchet (20) one ends connect with Xiao's axle and bedstead (1) strand; Pole (15) is made up of internal core rod, trocar sheath, can extend, when ratchet (20) is done counterclockwise to swing, its most advanced and sophisticated and notch (H) engagement, restriction arc (18) clockwise direction rotates, when big rocking arm (11) when shaking clockwise, because arc (18) is blocked by ratchet (20), pole (15) is in elongation state, and small rocker (17) can keep lower bed board (19), extension plate (24) to be parked in horizontal level.

Bedpan valve inversion mechanism (3) comprising: trapped orbit (28), movable stand (29), moving track (30), bedpan carriage (31), bedpan (27), valve carriage (32), valve (26), gear (33), gear shaft (34); Trapped orbit (28) is " T " font, there is channel suspending rail (40) in the outside of its horizontal component, channel suspending rail (40) two ends are fixed with block (41), there is limiting plate (38) inboard, and it is column plate (36) that there are a notch (37), its vertical component in limiting plate (38) middle part, the bottom of column plate (36) is provided with axis hole (J), trapped orbit (28) is formed by two, is positioned at the outermost of bedpan valve inversion mechanism (3), and is fixed as an integral body by last gusset piece (39), second line of a couplet fishplate bar (35); Movable stand (29) is the cube structure frame, and the outside, both sides is provided with upper roller (42), and two medial surface are provided with vertical channel suspending rail (43), have slotted hole (k) on the inwall of vertical channel suspending rail (43), and the inner wall outside face is equipped with middle roller (44); Movable stand (29) is installed in the inboard of trapped orbit (28), roll in channel suspending rail (40) by upper roller (42), movable stand (29) is moved horizontally in trapped orbit (28), when movable stand (29) moves by side to upper roller (42) by block (41) when blocking to one, vertical channel suspending rail (43) is over against notch (37), when movable stand (29) moves to upper roller (42) by opposite side block (41) when blocking to opposite side, the vertical channel suspending rail (43) of opposite side is also over against notch (37); Bedpan carriage (31) comprising: crossbeam (49), bedpan box (50), slide block (46), internal trolley (45), bottom roller (47), roller shaft (48); The top fixedly bedpan box (50) of crossbeam (49), bedpan (27) is housed in the bedpan box (50), and slide block (46) is being fixed in crossbeam (49) both sides, and internal trolley (45) is equipped with on slide block (46) top, the roller shaft (48) that can remove stage makeup and costume is equipped with in the bottom, and bottom roller (47) is housed on the roller shaft (48); Bedpan carriage (31) is installed in the side in the movable stand (29), cooperates with vertical channel suspending rail (43) by slide block (46), and bedpan carriage (31) can only be moved both vertically in movable stand (29), can not horizontal displacement; Roller shaft (48) the inner is fixed on the slide block (46), and the outer end is passed slotted hole (K) and cooperated with bottom roller (47); Internal trolley (45) rolls in the lower edge of limiting plate (38); Valve carriage (32) is installed in the opposite side in the movable stand (29), the structure of its structure and bedpan carriage (31) is basic identical, difference is that bedpan box (50) changes supporting plate (51) into, when internal trolley (45) when the lower edge of limiting plate (38) straightway rolls, bedpan carriage (31) and valve carriage (32) all can not move upward, can be along with movable stand (29) horizontal movement together, when internal trolley (45) over against or when entering notch (37), bedpan carriage (31) or valve carriage (32) can move both vertically in adjustable shelf (29); Moving track (30) is by straight trough shape track (52), curved channel suspending rail (53), tooth bar (54) formations that be fixed as one, and bending channel suspending rail (53) stage casing is that level, both sides section are for being inclined upwardly; Moving track (30) is formed by two, is contained in movable stand (29) two lateral surface respectively, straight trough shape track (52) and movable stand (29) outside two in roller (44) cooperates, bend channel suspending rail (53) and cooperate with bottom roller (47) on two slide blocks (46); Tooth bar (54) and gear (33) engagement; Gear shaft (34) is installed in the axis hole (J), is fixed with gear (33) on it, gear (33) and tooth bar (54) engagement; When gear shaft (34), gear (33) when rotating together, gear (33) driving rack (54) makes moving track (30) moving linearly; At moving track (30) during to a lateral movement, first kind of situation: internal trolley (45) be in limiting plate (38) the lower edge straightway time, the tilting section promotion bottom roller (47) of curved channel suspending rail (53) and movable stand (29), bedpan carriage (31), valve carriage (32) move horizontally together, until upper roller (42) is by block (41) when blocking, movable stand (29) can not move, internal trolley (45) is over against notch (37), bedpan (27) or valve (26) are finished bedpan (27), valve (26) level transposition motion also over against square hole (I); Second kind of state: promote moving track (30) more forward, the tilting section of curved channel suspending rail (53) make progress component will promote bottom roller (47), and bedpan carriage (31) or valve carriage (32) do motion vertically upward, the bed board that stretches out of finishing bedpan (27) or valve (26) moves; The third state: moving track (30) is mobile in the other direction, internal trolley (45) is in notch (37), movable stand (29) can not horizontal movement, the tilting section of curved channel suspending rail (53) will promote bottom roller (47), bedpan carriage (31) or valve carriage (32) to vertical stress component and do to move vertically downward, bedpan (27) or valve (26) are dropped under the bed board, after withdrawing from notch (37), internal trolley (45) enters limiting plate (38) lower edge straightway, movable stand (29) moves horizontally, and bedpan (27) valve (26) begins transposition again.

Another kind of assembling mode of the present utility model: no bedpan dodge gate inversion mechanism (4), do not establish square hole (I) in the middle bed board (14), slotted hole (12) is fixing with bedstead (1), not shaking along with big rocking arm (11); Motor-driven mechanism (2) is removed universal drive shaft (9), and two leading screw screw telescoping mechanisms (8) are installed, and one drives big rocking arm (11), and another drives small rocker (17); Remove pole (21), ratchet (20), small rocker (17) can upwards be turned up lower bed board (19) or set level.When the multifunctional electric bed uses, by the motor in the electric switch control motor-driven mechanism (3) when a direction is rotated, leading screw screw telescoping mechanism (8) produces and shortens motion, and spur big rocking arm (11) and make clockwise direction and rotate, big rocking arm (8) top makes that upper bed board (10) is upwards turned up, lower end pulling pole (15) is rotated small rocker (17) clockwise direction, and lower bed board (19) is folding down; When the upset of electric switch control motor, upper bed board (10) falls, and lower bed board is lifted on (19); Bedpan valve transposition process is: by the motor in the electric switch control motor-driven mechanism (3) when a direction is rotated, rotate through universal drive shaft (9), gear shaft (34) driven gear (33), make moving track (30) to a direction rectilinear motion, valve (26) is fallen under the bed board, translation then, and make bedpan (27) move to square hole (I) to locate to lift, finish bedpan (27) and transfer operation; When the upset of electric switch control motor, moving track (30) is to the opposite direction rectilinear motion, and bedpan descends and shifts out, and valve (26) moves to square hole (I) and locates to lift, and finishes valve (26) and transfers operation.

When revolution table (5) uses, make desktop (7) be stabilized in horizontal level with pulling to move, as dining table, desk etc.; Make desktop (7) be stabilized in the upright position with hand propelled, desktop (7) is as the tailstock baffle plate.

Claims

1. multifunctional electric bed, it includes bedstead (1), motor-driven mechanism (2), the combination of more piece bed board (3), bedpan valve inversion mechanism (4), revolution table (5), a bed board lift (6); It is characterized in that: bedstead (1) is positioned at the bottom, as supporting and install each workpiece; Motor-driven mechanism (2) is installed in the middle part of bedstead (1), the power of the motor expanding-contracting action by leading screw screw telescoping mechanism (8) is driven rising and falling of more piece bed board combination (3), the power of motor is replaced by bedpan (27), the valve (26) that rotatablely moving of universal drive shaft (9) drives bedpan valve inversion mechanism (4); Bed board lift (6) mainly comprises: big rocking arm (11), small rocker (17), a stalk (15); Its middle part of big rocking arm (11) is provided with Xiao's axis hole, connects with Xiao's axle (C) and bedstead (1) strand, its upper support upper bed board (10), its lower end a bit connects with the end strand of Xiao's axle (A) with leading screw screw telescoping mechanism (8), big rocking arm (11) is that the center of circle is back and forth shaken with Xiao's axle (C) under the driving of leading screw screw telescoping mechanism (8); Its top one end of small rocker (17) connects with Xiao's axle (F) and bedstead (1) strand, the other end is as supporting lower bed board (19), its underpart and pole (15) strand connects, the other end of pole (15) connects with a bit (B) strand of the lower end of big rocking arm (11), at big rocking arm (11) when shaking, by the transmission of pole (15), small rocker (17) is also corresponding to be shaken; More piece bed board combination (3) is positioned at the top of bedstead (1), includes: upper bed board (10), rebound (13), middle bed board (14), lower bed board (19), extension plate (24), flap (22), connecting rod (21); In bed board (14) one sides connect with Xiao's axle (E) and bedstead (1) strand, opposite side is connected on Xiao's axle (D) on the big rocking arm (11) with slotted hole (12), middle bed board (14) can shaking and swing up and down around Xiao's axle (E) with big rocking arm (11); Upper bed board (10) can be turned up or set level along with shaking of big rocking arm (11), and lower bed board (19) can shaking and keep flat or following folding with small rocker (17); During bedpan bed valve inversion mechanism (4) is fixed on bed pull (14) below, valve on it (26) or bedpan (27) therefrom stretch out in the square hole (I) of bed board (14); Revolution table (5) is connected on the bedstead (1) with bearing pin (G) strand, and under spacing Xiao's cooperation, desktop (7) can be stabilized on the horizontal or vertical position.

2. according to the described device of claim 1, it is characterized in that more piece bed board combination (3) periphery is provided with convex shoulder (25), be fixed with flap (22) below the convex shoulder (25), with flap (22) with upper bed board (10), rebound (13), middle bed board (14), lower bed board (19), the both sides of extension plate (24) connect, middle bed board (14) bottom is provided with fixedly ear (16), extension plate (24) bottom is provided with fixedly ear (23), the two ends of connecting rod (21) respectively with fixing ear (16), fixedly ear (23) strand connects, middle bed board (14), lower bed board (19), extension plate (24), connecting rod (21) is formed quadric chain, makes extension plate (24) and middle bed board (14) keep corresponding angle.

3. according to the described device of claim 1, it is characterized in that the bottom of the small rocker (17) in the bed board lift (6) is fixed with arc (18), the neighboring of arc (18) has notch (H), and ratchet (20) one ends connect with bearing pin and bedstead (1) strand; Pole (15) is made up of internal core rod, trocar sheath, can extend, when ratchet (20) is done counterclockwise to swing, its most advanced and sophisticated and notch (H) engagement, restriction arc (18) clockwise direction rotates, when big rocking arm (11) when shaking clockwise, because arc is pulled (18) and blocked by ratchet (20), pole (15) is in elongation state, and small rocker (17) can keep lower bed board (19), extension plate (24) to be parked in horizontal level.

4. according to the described device of claim 1, it is characterized in that bedpan valve inversion mechanism (3) comprising: trapped orbit (28), movable stand (29), moving track (30), bedpan carriage (31), bedpan (27), valve carriage (32), valve (26), gear (33), gear shaft (34); Trapped orbit (28) is " T " font, there is channel suspending rail (40) in the outside of its horizontal component, channel suspending rail (40) two ends are fixed with block (41), and there is limiting plate (38) inboard, and there is a notch (37) at limiting plate (38) middle part, its vertical component is column plate (36), the bottom of column plate (36) is provided with axis hole (J), and trapped orbit (28) is formed by two, is positioned at the outermost of bedpan valve inversion mechanism (3), and by last gusset piece (39), second line of a couplet fishplate bar (35) is fixed as an integral body; Movable stand (29) is the cube structure frame, and the outside, both sides is provided with upper roller (42), and two medial surface are provided with vertical channel suspending rail (43), have slotted hole (k) on the inwall of vertical channel suspending rail (43), and the inner wall outside face is equipped with middle roller (44); Movable stand (29) is installed in the inboard of trapped orbit (28), roll in channel suspending rail (40) by upper roller (42), movable stand (29) is moved horizontally in trapped orbit (28), when movable stand (29) moves by side to upper roller (42) by block (41) when blocking to one, vertical channel suspending rail (43) is over against notch (37), when movable stand (29) moves to upper roller (42) by opposite side block (41) when blocking to opposite side, the vertical channel suspending rail (43) of opposite side is also over against notch (37); Bedpan carriage (31) comprising: crossbeam (49), slide block (46), internal trolley (45), bottom roller (47); Slide block (46) is being fixed in crossbeam (49) both sides, and internal trolley (45) is equipped with on slide block (46) top, and bottom roller (47) is equipped with in the bottom; Bedpan carriage (31) is installed in the side in the movable stand (29), cooperate with vertical channel suspending rail (43) by slide block (46), bedpan carriage (31) can only be moved both vertically in movable stand (29), can not horizontal displacement, internal trolley (45) rolls in the lower edge of limiting plate (38); Valve carriage (32) is installed in the opposite side in the movable stand (29), its structure is identical with the structure of bedpan carriage (31), when internal trolley (45) when the lower edge of limiting plate (38) straightway rolls, bedpan carriage (31) and valve carriage (32) all can not move upward, can be along with movable stand (29) horizontal movement together, when internal trolley (45) over against or when entering notch (37), bedpan carriage (31) or valve carriage (32) can move both vertically in adjustable shelf (29); Moving track (30) is by straight trough shape track (52), curved channel suspending rail (53), tooth bar (54) formations that be fixed as one, and bending channel suspending rail (53) stage casing is level, and the both sides section is for being inclined upwardly; Moving track (30) is formed by two, is contained in movable stand (29) two lateral surface respectively, straight trough shape track (52) and movable stand (29) outside two in roller (44) cooperates, bend channel suspending rail (53) and cooperate with bottom roller (47) on two slide blocks (46); Tooth bar (54) and gear (33) engagement; Gear shaft (34) is installed in the axis hole (J), is fixed with gear (33) on it, gear (33) and tooth bar (54) engagement; When gear shaft (34), gear (33) when rotating together, gear (33), driving rack (54) make moving track (30) moving linearly.

5. according to the described device of claim 1, it is characterized in that another kind of assembling mode of the present utility model: no bedpan dodge gate inversion mechanism (4), the no square hole of middle bed board (14) (I); Slotted hole (12) is fixing with bedstead (1); Motor-driven mechanism (2) is removed universal drive shaft (9), and two leading screw screw telescoping mechanisms (8) are installed, and one drives big rocking arm (11), and another drives small rocker (17), and small rocker (17) can upwards be turned up lower bed board (19) or set level, and removes pole (21).