CN115089399A - A multifunctional nursing bed that can be rotated and separated laterally - Google Patents

Abstract

The invention relates to the field of medical nursing equipment, in particular to a nursing bed that can be automatically rotated and separated laterally. Including the bed part and the wheelchair part. The bed part includes a bed frame, a rotating separation mechanism, and the wheelchair part includes a return docking device, a bed and chair separation combined with a locking device; the wheelchair also includes a wheelchair frame, a back lift, a curved leg mechanism, a foot plate linkage mechanism, etc.; the curved leg and foot plate The linkage mechanism is hingedly connected to the wheelchair to control the lifting and lowering of the back panel, leg panel and foot panel; the rotation separation mechanism uses the principle of four-bar mechanism to realize the rotation and separation function of the wheelchair; the return docking device is fixedly connected to the rotation separation device, through The cooperation of the spring and the telescopic slider realizes the function of separation and combination; the wheelchair has rich posture transformation, ergonomic design, high comfort, high degree of automation, safety and reliability.

Description

A multifunctional nursing bed that can be rotated and separated laterally

technical field

The present invention relates to the field of medical care appliances, and more particularly, to a nursing bed capable of changing sitting posture, changing bed and chair, and automatically rotating and separating laterally.

Background technique

Nursing beds are mainly aimed at people with inconvenience or limited mobility. They are generally used for the rehabilitation and nursing of the above-mentioned people. They are auxiliary products designed according to people's sitting and lying habits. The purpose is to help people with disabilities to complete their daily bed activities. , such as lifting the back, raising the leg, bending the leg, etc., through the adjustment of the bed itself to reduce the difficulty of adjusting their posture for people with inconvenient activities to achieve higher comfort.

The daily activities of the nursing bed users need to complete the transfer from the bed body to the wheelchair. The general method is to first lift and move the transferred person to the bedside, and then move the transferred person to the wheelchair with the assistance of the nursing staff. However, the process of moving the elderly or people with disabilities from the bed to the wheelchair is laborious, and there is a risk of injury to the transferred person during this process; in order to simplify this process, the bed and chair integrated detachable nursing bed is the main direction of current research. The difference between the integrated bed and chair equipment is that the wheelchair and the bed are integrated into one, and the wheelchair can be separated separately, which can realize the zero-distance transfer of the user from the bed to the wheelchair, which provides great convenience for the user. However, most of the existing bed and chair integrated equipment have the following shortcomings: 1. The process of converting from the bed to the wheelchair needs to be carried out manually, and the separation of the wheelchair needs to be dragged by manpower, which cannot be automatically separated. 2. The nursing bed that can realize the function of automatic chair formation does not have the separation function, the wheelchair and the bed are locked together, and the function of the wheelchair to move freely is not realized. 3. The posture transformation process of the nursing bed is not rich enough, and the user's comfort is low. 4. The wheelchair separation method is not flexible enough. Most nursing beds are separated from the front and rear of the wheelchair, which cannot meet the needs of different use environments and is difficult to operate, which is inconvenient for nursing staff to operate.

SUMMARY OF THE INVENTION

In order to optimize and solve the technical deficiencies of the existing nursing beds, the present invention provides a nursing bed with lateral automatic rotation and separation of the bed chair. The nursing bed has three states: the bed body, the bed body combined with the wheelchair, and the bed body and the wheelchair separated. In the first two states, the posture transformation and turning functions can be performed, which is convenient for the user to use in various usage scenarios in daily life; The wheelchair and the bed can be automatically separated and connected in the lateral direction, which reduces the degree of manual participation.

In order to achieve the above objects, the present invention adopts the following technical solutions.

A multifunctional nursing bed that can be rotated and separated laterally includes a bed body part and a wheelchair part. When the bed body is combined with the wheelchair, the wheelchair part of the nursing bed can realize the functions of posture transformation and rotation; when the bed body and the wheelchair are separated, the wheelchair part is a separate wheelchair.

The bed part includes a headboard, a footboard, a bed frame, a rotary separation mechanism, a rotary separation mechanism mounting plate, and an electromagnetic lock device; the headboard, the footboard and the bed frame are connected to form the overall outline of the nursing bed , the rotation separation mechanism mounting plate is fixedly connected with the bed frame and is located below the bed frame; the rotation separation mechanism is installed on the outer side above the rotation separation mechanism mounting plate for automatic rotation of the wheelchair part separation.

The wheelchair part includes a wheelchair frame, a wheelchair back board, a wheelchair hip board, a wheelchair thigh board, a wheelchair calf board, a wheelchair foot board, a back lift mechanism, a leg bending mechanism, a foot board linkage mechanism, a power supply battery, a control box, a return docking device, Electromagnetic lock device and universal wheel; the boards of the wheelchair are connected by means of living hinges, and the angle between the boards can be adjusted freely; one end of the back lift mechanism is hinged with the backboard of the wheelchair, and the other end is connected with the backboard of the wheelchair. The wheelchair frame is hinged to adjust the angle of the wheelchair backboard; one end of the leg bending mechanism is hinged with the wheelchair hip board, and the other end is hinged with the calf board, and the leg bending mechanism is integrally located in the wheelchair The bottom plate is used to adjust the angle between the wheelchair thigh plate and the wheelchair calf plate; the power supply battery and the control box are fixed on the wheelchair frame, and the universal wheel is installed on the bottom four of the wheelchair frame. corner.

Preferably, the wheelchair frame is designed in a U shape, and the U-shaped opening faces the headboard; the U-shaped wheelchair frame can avoid the interference between the wheelchair part and the rotation separation mechanism placement plate during the rotation separation process, and ensure the transformation The process is implemented reliably.

The back-lifting mechanism includes a back-lifting push rod, a first connecting hinge, and a second connecting hinge; the first connecting hinge is fixedly connected with the wheelchair backboard, and is located at the lower position of the rear middle of the backboard, and the One end of the back lift push rod is hinged with the first connecting hinge, and the other end is hinged with the second connecting hinge. The second connecting hinge is fixedly connected with the wheelchair frame and is located at the middle position on the right side of the upper layer of the wheelchair frame The back-lifting push rod can be extended and retracted within the control range, and drives the back-board to lift and fall, so as to realize the angle adjustment of the back-board to realize the position and attitude transformation.

The curved leg mechanism includes a curved leg electric push rod, a slider, a chute, and a connecting rod; the chute is arranged on the right side of the bottom of the wheelchair thigh plate and is fixed, and the slider is arranged in the chute , can slide in the left and right directions in the chute, both ends of the slider are provided with connection positions, the right end of the slider is connected with the head end of the curved leg electric push rod, and can be connected to the curved leg. Driven by the electric push rod, it moves left and right in the chute, the end of the curved leg electric push rod is hinged with the wheelchair frame, the hinge position is located in the middle of the upper layer of the wheelchair frame, and one end of the connecting rod is connected to the slider The left connecting part is hinged, the other end is hinged with the calf board, and the hinge position is located in the middle of the right side of the bottom of the calf board; the curved-leg electric push rod is an active part in the affiliated curved-leg mechanism, and the curved-leg electric push rod drives the The slider moves left and right in the chute, thereby driving the connecting rod to move, so that the upper leg plate and the lower leg plate can freely adjust the angle.

The foot plate linkage mechanism includes a left "L"-shaped connecting hinge, a right "L"-shaped connecting hinge, and a linkage link; the left "L"-shaped connecting hinge is fixedly connected with the wheelchair thigh plate, and the connection position is located in the thigh. At the bottom of the board, the right "L"-shaped connecting hinge is fixedly connected with the wheelchair footboard, and the connection position is located at the bottom of the footboard, and both ends of the linkage link are provided with connection positions, respectively on the left "L"-shaped The connecting hinge is hinged with the right "L"-shaped connecting hinge; the linkage link, the left "L"-shaped connecting hinge, the right "L"-shaped connecting hinge and the wheelchair calf plate form a parallelogram mechanism in the vertical plane, ensuring that The foot plate can be linked with the thigh plate to realize synchronous adjustment.

The rotating separation device is a four-bar mechanism, including an active crank, a rotating connecting rod, and a follow-up rocker; the crank in the four-bar mechanism composed of the active crank, the rotating connecting rod and the follow-up rocker acts as the active part, and the connecting rod is the active part. The rod moves under the driving of the crank as the main movement. The movement of the connecting rod can be divided into two parts: lateral translation and rotation. Translation and rotational movement, the follower link plays the role of auxiliary movement; the initial state of the active crank and the horizontal plane are at an angle of 45°, the initial state of the rotation link is a horizontal state, preferably, the follower rocker The initial state is consistent with the angle of the active crank to prevent interference during the movement; when the active crank is in the first 1/3 stage of rotation, the rotating connecting rod mainly performs translation and small-angle rotating motion, and the rotating connecting rod Make a certain distance approximate translational movement to the rotation position of the active crank; when the active crank is in the last 2/3 stage of rotation, the rotating connecting rod mainly performs a large-angle rotating motion, and the rotating connecting rod is driven by the active crank. It rotates from an approximately horizontal state to a vertical state, that is, rotates 90°; the rotating link in the rotating separation mechanism is the main moving object, and the movement process of the rotating link is the movement to be completed in the separation process.

The return docking device includes a parent block, a telescopic slider, a spring, and a limit block; the parent block is fixedly connected with the rotating link in the four-bar mechanism for rotating and separating, and can follow the movement of the rotating link. For the same movement, the two ends of the parent block are provided with grooves, and there are two telescopic sliders, one on the left and one on the left, which are respectively arranged in the grooves at both ends of the parent block. The limit block also has two grooves and is fixedly connected with the wheelchair frame. The connection position is located at the right edge of the middle layer of the wheelchair frame, and the telescopic slider can be retracted under the action of external force. When the spring is fully retracted, the telescopic slider is just flush with the left and right sides of the parent block; the return docking device can be divided into two states: combination and separation ; In the combined state, the spring is in a natural state, and the telescopic sliding block is in a state of being pushed out and can extend into the groove of the limit block; when it needs to be separated, the telescopic sliding block is pulled back, The spring is in a compressed state. When the spring is fully retracted, the parent block, the spring and the telescopic slider can be separated from the limit block. After the separation is completed, the external force is removed and the spring is restored to its natural state; when combined again , when the telescopic slide block hits the limit block, the spring is compressed under the action of force, the telescopic slide block is retracted, and then the spring changes from a compressed state to a natural state to push the telescopic slide block to the top into the groove of the limit block to realize the combination; preferably, the contact point between the telescopic slider and the limit block is arc-shaped.

During the wheelchair conversion process, the rotation separation mechanism cooperates with the return docking device to complete the conversion action; the return docking device is fixedly connected to the rotation link in the rotation separation four-bar mechanism, and the rotation link During the movement, the return docking device performs the same movement, and the limit block of the return docking device is connected to the wheelchair frame, thereby driving the wheelchair frame to perform the same movement as the rotating link, that is, translate first and then rotate, and through translation The return docking device is disengaged after the separation is completed by the rotational motion, and the wheelchair part can move independently.

The electromagnetic lock device includes an electromagnet and an armature; the electromagnetic lock device is arranged at the contact point between the bed body and the wheelchair, specifically, is installed at the side contact point when the wheelchair and the bed body are combined into a whole bed, and the magnet part It is arranged on the wheelchair frame, and is installed at the middle position of the upper layer on the side where the wheelchair frame and the bed frame are in contact. The magnet controls the on-off of the electromagnet through the power supply battery and the control box. The bed body is installed on the inner side of the bed body frame; when the bed and chair are combined, the electromagnet is in an energized state and can attract and engage with the armature to ensure stable combination. Constraints on the wheelchair part.

The controller is fixed at the outer corner of the bottom layer of the wheelchair frame, and the controller is used to control the back lift push rod, the curved leg push rod and the electromagnetic lock device; the controller can control the The telescopic movement of the push rod within the range of its stroke and stop at any position within the stroke range and lock the push rod to ensure the reliable realization of the function of lifting the back of the wheelchair and the function of bending the legs; the controller can control the electromagnetic The electromagnet in the lock device is turned on and off, specifically, when the bed body part and the wheelchair part are combined, the electromagnet is controlled to be energized, and when the two are separated, the electromagnet is controlled to be turned off.

The power supply battery is an ordinary battery, which is fixed at the inner corner of the bottom layer of the wheelchair frame; the main function of the power supply battery is for the back lifter, the curved leg pusher, the controller and the electromagnetic lock device. Power supply ensures that the changing process of the wheelchair can be reliably realized and can be adjusted at any time.

As can be seen from the above, the present invention provides a nursing bed with a lateral automatic rotation and separation of the bed and chair, and compared with the prior art, the beneficial effects of the present invention are:

1. The degree of integration is high; most of the existing nursing beds only complete one function of the bed body or the wheelchair, which cannot meet the needs of users for different use environments and places; the present invention combines the bed and chair, and the user can Switch the use state at will according to your own needs, and the equipment has a high degree of integration.

2. Easy to use; different from the general nursing bed that needs to transport the care recipient from the bed to the wheelchair, the present invention can realize the automatic change of the bed and chair. When the care recipient needs to leave the bed and use the wheelchair, the wheelchair part can be automatically changed. Converted into a chair, the handling process for the care recipient is avoided, and the occurrence of secondary injuries is avoided; the wheelchair part in the present invention can also be detached from the bed body after being turned into a chair, so as to meet various daily use scenarios of users; During the process, there is no need for redundant operations, just press the remote control according to your own needs to adjust the nursing bed to a comfortable posture state that suits you. The adjustment process does not require manual participation, and the whole process is automatic and easy to use.

3. The structure is compact; the present invention adopts a four-bar mechanism as the rotating separation mechanism, the mechanism principle is simple, and the movement process is reliable. The movement of translation and rotation is realized through the motion law of the connecting rod in the four-bar mechanism, the structure is simple and compact, and the movement reliability is high.

4. Safe and reliable; the present invention adopts a push rod to realize the function of changing the position and attitude, and the push rod can be locked at any position in the stroke to prevent the wheelchair from sliding down and causing injury to the user; the present invention adopts a four-bar mechanism to realize the function of rotating and separating , the mechanism is simple, the rotation and separation process is carried out at one time, there is no unnecessary additional action, and the reliability is high; the electromagnetic lock device in the present invention ensures that the bed body part and the wheelchair part are closely fitted when the bed and chair are combined, and the safety is high. .

Compared with the existing products, the present invention has the advantages that the bed and chair conversion process can be continuously carried out under control, the conversion process is simple, the chair-forming process can be automatically separated, the separation process and the chair-forming process can be performed simultaneously, the degree of manual participation is reduced, and the bed body posture The transformation is more abundant, the comfort is higher, the degree of automation is high, the structure is compact, the principle of the realization scheme is simple, and the feasibility is high.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the present invention;

Fig. 2 is another state three-dimensional structure schematic diagram of the present invention;

Fig. 3 is the bottom view of the right side direction of the bed of the present invention;

Fig. 4 is the top view of the right side direction of the bed of the present invention;

Figure 5 is a side view of the wheelchair part of the present invention;

Fig. 6 is the side view of the chair plate part of the present invention;

Fig. 7 is the partial detail side view of the foot plate part of the present invention;

8 is a top view of the return docking device of the present invention;

Figures 9 and 10 are schematic diagrams of the four-bar structure of rotary separation according to the present invention.

In the figure: 1-bed body part, 11-bed headboard, 12-bed footboard, 13-bed body frame, 14-rotation separation mechanism, 141-active crank, 142-rotating connecting rod, 143-following rocker, 15-Rotating separation mechanism mounting plate, 16-Electromagnetic locking device, 161-Electromagnet, 162-Armor, 2-Wheelchair part, 211-Wheelchair back plate, 212-Wheelchair hip plate, 213-Wheelchair thigh plate, 214-Wheelchair calf Board, 215-Wheelchair foot board 22-Wheelchair frame, 23-Universal wheel, 24-Back lift mechanism, 241-Back lift push rod, 242-And connecting hinge, 25-Curved leg mechanism, 251-Including electric push rod for curved leg , 252-slider, 253-chute, 254-link, 26-foot plate linkage, 261-left "L" type connecting hinge, 262-right "L" type connecting hinge, 263-linkage link, 271-power supply Battery, 272-control box, 28-return docking device, 281-maternal block, 282-right telescopic slider, 283-left telescopic slider, 284-spring, 285-limit block

Detailed ways

The specific embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings:

In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. Wherein the same parts are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" as well as "clockwise" and "counterclockwise" used in the following description refer to the direction. The terms "inner" and "outer" are used to refer to directions toward or away from the geometric center of a particular component, respectively.

Example:

As shown in Figure 1-10, a nursing bed with automatic lateral rotation and separation of the bed and chair includes a bed body part 1 and a wheelchair part 2; when the bed body 1 and the wheelchair 2 are combined, the wheelchair part 2 of the nursing bed can realize posture transformation and rotation function; when the bed body 1 and the wheelchair 2 are separated, the wheelchair part 2 is a separate wheelchair.

As shown in Figures 3 and 4, the bed part 1 includes a headboard 11, a footboard 12, a bed frame 13, a rotary separation mechanism 14, a rotary separation mechanism mounting plate 15, and an electromagnetic lock device 16; the headboard 11 is connected with the foot board 12 and the bed frame 13 to form the overall outline of the nursing bed. The mounting plate of the rotating separation mechanism 15 is fixedly connected with the bed frame 13 and is located below the bed frame; the rotating separation mechanism 14 is installed on the The upper outer side of the installation plate 15 of the rotation separation mechanism is used for automatic rotation separation of the wheelchair part 2 .

As shown in FIG. 5 , the wheelchair part 2 includes a wheelchair back plate 211 , a wheelchair hip plate 212 , a wheelchair thigh plate 213 , a wheelchair calf plate 214 , a wheelchair foot plate 215 , a wheelchair frame 22 , a universal wheel 23 , a back lift mechanism 24 , a Leg mechanism 25, foot plate linkage mechanism 26, power supply battery 271, control box 272, return docking device 28, electromagnetic lock device 16; the boards (211-215) of the wheelchair are connected by living hinges. The angle between the plates (211-215) can be adjusted freely; one end of the back lift mechanism 24 is hinged with the wheelchair back plate 211, and the other end is hinged with the wheelchair frame 22, so as to adjust the angle of the wheelchair back plate 211 ; One end of the leg bending mechanism 25 is hinged with the wheelchair hip plate 212, and the other end is hinged with the calf plate 214. The wheelchair thigh board 213 is at an angle with the wheelchair calf board 214; one end of the foot board linkage mechanism 26 is hinged with the wheelchair thigh board 213, and the other end is hinged with the wheelchair foot board 215, and is installed on the outer side of the bottom of the wheelchair boards 213-215 The power supply battery 271 and the control box 272 are fixed on the wheelchair frame 22 , and the universal wheels 23 are installed at the four corners of the bottom of the wheelchair frame 22 .

Preferably, the wheelchair frame 22 is designed to be U-shaped, and the U-shaped opening faces the headboard 11 ; the U-shaped wheelchair frame 22 can prevent the wheelchair part 2 from placing the plate 15 with the rotation separation mechanism during the rotation separation process. interference to ensure the reliable realization of the transformation process.

As shown in FIG. 6 , the back-lifting mechanism 24 includes a back-lifting push rod 241 and a connecting hinge 242 . The end of the back-lifting push rod 241 is hingedly connected to the wheelchair frame 22 . The movable end is connected with the hinge 242, and the hinge is fixed on the wheelchair back panel 211; the movement of the back lift push rod 241 is a telescopic motion, and the wheelchair back panel 211 is fully retracted when the back lift push rod 241 is fully retracted When the back lifter 241 is extended, it drives the backboard 211 to lift up. During the extension process of the back lifter 241, the backboard 211 can be at 0 Move within the range of ° to 80°, when the back plate 211 is fully lifted, the back lift rod 241 is extended to the maximum stroke and locked; the back lift rod 241 can be stopped at any distance within the range of travel and locked. , the back plate 211 can also be lifted to any angle within the range of 0° to 80° and locked.

As shown in FIG. 6 , the curved leg mechanism 25 includes a curved leg electric push rod 251, a slider 252, a chute 253, and a connecting rod 254; , the slider 252 is arranged in the chute 253 and can slide in the left and right directions in the chute 253. Both ends of the slider 252 are provided with connecting positions, and the right end of the slider 252 is connected to the The curved-leg electric push rod 251 is connected to the head end, and can move left and right in the chute 253 under the driving of the curved-leg electric push rod 251 . The end of the curved-leg electric push rod 251 is connected to the wheelchair frame 22 . Hinged, the hinged position is located in the middle of the upper layer of the wheelchair frame 22 , one end of the connecting rod 254 is hinged with the left connection of the slider 252 , and the other end is hinged with the calf board 214 , and the hinged position is located at the bottom of the calf board 214 In the middle of the right side; the curved-leg electric push rod 251 in the affiliated curved-leg mechanism 25 is the active part, and the curved-leg electric push rod 251 drives the slider 252 to move left and right in the chute 253, thereby driving the connecting rod 254 movement, so that the thigh board 213 and the calf board 214 can adjust the angle freely; when the back board 211, the hip board 212, the thigh board 213, the calf board 214, and the foot board 215 in the wheelchair part 2 are all in the horizontal position, the sliding The block 252 is located on the leftmost side of the chute 253, and the curved leg push rod 251 is extended to drive the wheelchair thigh plate 213 and calf plate 214 to lift up in a clockwise direction, and the range of motion is 0° to 15°; When the rod 251 is retracted, the thigh plate 213 and the calf plate 214 fall in the counterclockwise direction, and when they reach the horizontal position, the curved leg push rod 251 continues to retract, and the slider 252 starts to move from left to right in the chute 253 , the thigh plate 213 is kept horizontal, and when the slider 252 moves, the connecting rod 254 is driven to move, thereby driving the lower leg plate 214 to continue to fall in the counterclockwise direction. When the curved leg push rod 251 is completely retracted, the slider 252 moves to the far right of the chute 253 side, the lower leg plate 214 is lowered to a position of 80° from the horizontal plane; the curved leg push rod 251 can be stopped and locked at any distance within the stroke range, and the lower leg plate 214 can also be adjusted to a range of +15° to -80° any angle.

As shown in FIG. 7 , the associated foot plate linkage mechanism 26 includes a left "L"-shaped connecting hinge 261, a right "L"-shaped connecting hinge 262, and a linkage link 263; the left "L"-shaped connecting hinge 261 and the wheelchair thigh plate 213 is fixedly connected, the connection position is located at the bottom of the thigh plate 213, the right “L”-shaped connecting hinge 162 is fixedly connected with the wheelchair foot plate 215, and the connection position is located at the bottom of the foot plate 215, the two ends of the linkage link 263 Both are provided with connecting positions, which are respectively hinged on the left "L"-shaped connecting hinge 261 and the right "L"-shaped connecting hinge 262; the linkage link 263, the left "L"-shaped connecting hinge 261, and the right "L"-shaped connecting hinge 261 The connecting hinge 261 and the wheelchair calf board 214 form a parallelogram mechanism in the vertical plane, which ensures that the foot board can be linked with the thigh board to realize synchronous adjustment; When the angle changes under driving, the spatial position of the parallelogram mechanism changes, and the wheelchair foot plate 215 can maintain the same angle change as the thigh plate 213 .

As shown in FIGS. 9-10 , the rotating separation device 14 is a four-bar mechanism, including an active crank 141 , a rotating connecting rod 142 , and a follow-up rocker 143 ; the active crank 141 , the rotating connecting rod 142 and the follow-up rocker 143 In the constituted four-bar mechanism, the crank 141 acts as the active element, and the connecting rod 282 moves under the driving of the crank 141 and acts as the main motion. The movement of the connecting rod 142 can be divided into two parts: lateral translation and rotation. 141 The movement state of the connecting rod is different in different stages of rotation, so as to realize the translation and rotation movement of the wheelchair, and the follow-up connecting rod 143 plays the role of auxiliary movement; the initial state of the active crank 141 is at an angle of 45° to the horizontal plane , the initial state of the rotating link 142 is a horizontal state, preferably, the initial state of the follower rocker 143 is consistent with the angle of the active crank 141 to prevent interference during movement; the active crank 141 In the 1/3 stage, the rotating connecting rod 142 mainly performs translation and small-angle rotational motion, and the rotating connecting rod 142 makes an approximate translational motion for a certain distance to the rotational position of the active crank 141; In the 2/3 stage, the rotating connecting rod 142 mainly performs a large-angle rotating motion, and the rotating connecting rod 142 is driven by the active crank 141 to rotate from an approximately horizontal state to a vertical state, that is, rotate 90°; the The rotation link 142 in the rotation separation mechanism 14 is the main moving object, and the movement process of the rotation link 142 is the movement to be completed in the separation process.

Specifically, the initial position of the four-bar mechanism is shown in FIG. 9 , the crank 141 is an active member, the crank 141 rotates in a counterclockwise direction, and the crank 141 can be divided into two processes during the rotation process. One is that the crank 141 rotates to drive the connecting rod 142 to perform an approximate translational motion, and the second is that the crank 141 drives the connecting rod 142 to perform a rotational motion; when the crank 141 rotates within the range of 45° to 0° , the main movement of the connecting rod 142 is the translational movement to the left, the rotation of the connecting rod 282 is very small, and it is approximately a translational movement; when the crank 141 moves in the range of 0° to -135°, the The connecting rod 142 mainly performs a rotating motion, and at the same time, the position of the connecting rod 142 continues to shift to the left, and finally the connecting rod 142 moves to a state of 90° with the horizontal plane. The connecting rod 282 undergoes a combination of two movements of initial translation plus small-angle rotation and subsequent large-angle rotation to realize the change of the position of the connecting rod 142 from FIG. 9 to FIG. 10 , and the connecting rod 142 is docked through the return position. The device 28 is connected to the wheelchair frame 22 so as to realize the function of automatic rotation and separation of the wheelchair part 2 .

As shown in FIG. 8 , the return docking device 28 includes a parent block 281 , telescopic sliders 282 , 283 , a spring 284 , and a limit block 285 ; The rod 142 is fixedly connected, and can follow the movement of the rotating link 142 to make the same movement. The mother block 281 is provided with grooves at both ends, and the telescopic sliders 282 and 283, one on the left and one on the left, are respectively arranged in the In the grooves at both ends of the mother block 281, it is connected with the mother block 281 through the spring 284; the limit blocks 285 also have two and are provided with grooves, which are fixedly connected with the wheelchair frame 22 at the connection position. Located at the right edge of the middle layer of the wheelchair frame 22, the telescopic sliders 282 and 283 can be retracted under the action of external force, and extended under the elastic force of the spring 284. When the spring 284 is fully retracted, the telescopic sliders 282 and 283 are just flush with the left and right sides of the parent block 281 .

Specifically, the return docking device 28 can be divided into two states: combined and separated; in the combined state, the spring 284 is in a natural state, and the telescopic sliders 282 and 283 are in a state of being pushed out and can extend into In the groove of the limit block 285; when it needs to be separated, the telescopic sliders 282 and 283 are pulled back, the spring 284 is in a compressed state, and the mother block 281 can be pulled back when the spring 284 is fully retracted. , the spring 284 and the telescopic sliders 282, 283 are separated from the limit block 285. After the separation is completed, the external force is removed and the spring 284 returns to its natural state; When the limit block 285 is under the action of force, the spring 284 is compressed, the telescopic sliders 282 and 283 are retracted, and then the spring 284 changes from the compressed state to the natural state and pushes the telescopic sliders 282 and 283 into the space. The connection is realized in the groove of the limit block 285; preferably, the contact points of the telescopic sliders 282, 283 and the limit block 285 are arc-shaped.

After the wheelchair part 2 is rotated into a chair, the wheelchair part 2 can be pushed out after the wheelchair part 2 is separated from the bed part 1 by toggling the telescopic sliders 282 and 293 at both ends; When the wheelchair part 2 is combined with the bed part 1 , the wheelchair 2 is pushed to a fixed position, and the telescopic sliders 282 and 283 are retracted under the action of the limiting block 285 and the spring 284 The wheelchair part 2 is locked on the return docking device, and is then returned to the state of the bed under the driving force of the rotating separation mechanism 14. And combined with the bed part 1.

The electromagnetic lock device 16 includes an electromagnet 161 and an armature 162; the electromagnetic lock device 16 is arranged at the contact point between the bed body 1 and the wheelchair 2, specifically, when the wheelchair 2 and the bed body 1 are combined into a whole bed. At the side contact point, the magnet 161 is arranged on the wheelchair frame 22, and is installed at the middle position of the upper layer on the side where the wheelchair frame 22 and the bed frame 13 are in contact. The magnet 161 communicates with the control box 272 through the power supply battery 271. To control the power on and off of the electromagnet, the armature 162 is partially arranged on the bed frame 13 and installed inside the bed frame 13; the electromagnet 161 is in an energized state when the bed and chair is combined and can be connected to the bed frame 13. The pull-in of the armature 162 ensures a stable combination, and the electromagnet 161 is disconnected from the power-off and the armature 162 is disconnected, thereby releasing the restraint on the wheelchair part 2 .

The controller 272 is fixed at the outer corner of the bottom layer of the wheelchair frame 22, and the controller 272 is used to control the back lift mechanism 24, the leg bending mechanism 25 and the electromagnetic lock device 16; the control The device 272 can control the telescopic movement of the push rods 241 and 251 within its stroke range, stop at any position within the stroke range and lock the push rods, so as to ensure the reliable realization of the back-lifting function and the bending-leg function of the wheelchair 2 ; The controller 272 can control the power on and off of the electromagnet 161 in the electromagnetic lock device 16, specifically, when the bed part 1 is combined with the wheelchair part 2, the control electromagnet 161 is energized, when the two The control electromagnet 161 is de-energized during separation.

The power supply battery 271 is an ordinary battery, which is fixed at the inner corner position of the bottom layer of the wheelchair frame 22; 272 and the electromagnetic lock device 16 to supply power to ensure that the changing process of the wheelchair part 2 can be reliably realized and can be adjusted at any time.

The working process of the present invention is as follows:

In the initial state, there is no angular change between the wheelchair boards and they are all parallel to the ground, and the electromagnetic lock device 19 is in a working state.

In the state of raising the back and bending the leg, the back raising mechanism 24 and the bending leg mechanism 25 move synchronously, and the first back raising push rod 241 and the bending leg push rod 251 move synchronously, so that the wheelchair board moves synchronously. Assist the user to complete the back lift and leg bending movements on the bed.

When rotating into a chair state, the electromagnet 161 is powered off, and the active crank 141 in the rotating separation mechanism 14 moves to drive the rotating connecting rod 142 and the return docking device 28 connected to it to translate a small distance and then a large angle. Rotation movement. During this process, the rotating link 142, the return docking device 28, and the wheelchair frame 22 are constrained to perform the same movement; Separate the wheelchair part 2 separately; when the bed and chair are combined, after the return docking device 28 is successfully docked, the wheelchair part 2 and the bed body part are moved by the rotation separation mechanism 14 in the opposite motion to the above. 1 is combined into a whole, and then the electromagnet 161 is energized to ensure a tight combination.

The wheelchair of the invention has soft and rich posture transformation, the back plate and the leg plate can be adjusted to any angle, and the comfort is high; the principle and structure of the rotating separation device are simple, the operability is high, and the safety and reliability are high.

The above embodiments are implemented on the premise of the technical solutions of the present invention, and provide detailed embodiments and specific operation processes, but the protection scope of the present invention is not limited to the above-mentioned embodiments. The methods used in the above embodiments are conventional methods unless otherwise specified.

Claims (10)

1. A multifunctional nursing bed that can be rotated and separated laterally, characterized in that it comprises a bed body part and a wheelchair part, the bed body part and the wheelchair part can be combined and separated, and the wheelchair part can be moved The transformation and rotation are separated, the bed body and the wheelchair constitute a whole bed when combined, and the wheelchair part is a separate wheelchair when separated. 2 . The multifunctional nursing bed capable of being rotated and separated laterally according to claim 1 , wherein the bed body part comprises a headboard, a footboard, a bed frame, a rotary separation mechanism, and a rotary separation mechanism. 3 . Mounting plate and electromagnetic lock device, the headboard and footboard are connected with the bed frame to form the overall outline of the nursing bed, and the rotating separation mechanism mounting plate is arranged under the bed frame, and is connected to the rotating separation mechanism. The rotating separation mechanism is provided on the mounting plate. 3. The multifunctional nursing bed that can be rotated and separated laterally according to claim 1, wherein the wheelchair part comprises a wheelchair frame, a wheelchair back board, a wheelchair hip board, a wheelchair thigh board, a wheelchair calf board, Wheelchair foot plate, back lift mechanism, leg bending mechanism, foot plate linkage mechanism, power supply battery, control box, return docking device, electromagnetic lock device, universal wheel, the boards of the wheelchair are connected by means of living hinges, the said The angle between each board can be adjusted freely, the back lift mechanism is hinged on the wheelchair, the leg bending mechanism is hinged under the wheelchair board, the power supply battery and the control box are arranged on the wheelchair frame above, the universal wheel is mounted on the bottom of the wheelchair frame. 4. The multifunctional nursing bed capable of being laterally rotated and separated according to claim 1, wherein the rotary separation device is a four-bar mechanism, comprising an active crank, a rotating connecting rod, and a follow-up rocker, all of which For the driving part of the active crank, the connecting rod moves under the driving of the crank and acts as the main movement. The movement of the connecting rod can be divided into two parts: lateral translation and rotation. different states of motion. 5 . The four-bar mechanism for rotating and separating according to claim 8 , wherein the initial state of the active crank is at an angle of 45° with the horizontal plane, the initial state of the rotating connecting rod is a horizontal state, and the follow-up rocking The initial state of the rod is consistent with the active crank angle. 6 . The four-bar mechanism for rotating and separating according to claim 8 , wherein: when the active crank is in the first 1/3 stage of rotation, the rotating connecting rod mainly performs translation and small-angle rotation movements, so the When the active crank is in the last 2/3 stage of rotation, the rotating connecting rod mainly performs a large-angle rotational motion, and the rotating connecting rod rotates from an approximately horizontal state to a vertical state under the driving of the active crank, that is, rotates 90 degrees. °. 7 . The multifunctional nursing bed that can be rotated and separated laterally according to claim 3 , wherein the return docking device comprises a parent block, a telescopic slider, a spring, and a limit block, and the parent block It is fixedly connected with the rotating connecting rod in the rotating and separating four-bar mechanism, and can follow the movement of the rotating connecting rod to make the same movement. The two ends of the parent block are provided with grooves, and the telescopic sliding block has two , one on the left and one on the left, respectively arranged in the grooves at both ends of the parent block, connected to the parent block through the spring, and the limit blocks also have two and are provided with grooves, which are installed in the wheelchair frame At the right edge of the middle layer, the contact point between the telescopic sliding block and the limit block is set as an arc shape. 8 . The return docking device according to claim 11 , wherein the telescopic sliding block can be retracted under the action of an external force, and extended under the action of the elastic force of the spring, and when the spring is fully retracted, 9 . The telescopic sliding block is just flush with the left and right sides of the parent block, and when the spring is in a natural state, the telescopic sliding block can just fully extend into the limiting block groove. 9 . The return docking device according to claim 11 , wherein the return docking device can be divided into two states: combination and separation; in the combination state, the spring is in a natural state, so the The telescopic sliding block is in a state of being pushed out and can extend into the groove of the limiting block. When separating, the telescopic sliding block is pulled back, the spring is in a compressed state, and when the spring is fully retracted The mother block, the spring and the telescopic slider can be separated from the limit block, and after the separation is completed, the spring is restored to its natural state when the external force is removed. 10 . The multifunctional nursing bed that can be rotated and separated laterally according to claim 3 , wherein the wheelchair frame is designed to be U-shaped, and the U-shaped opening faces the headboard. 11 .

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