CN113101088B - Lifting-free type bed sheet quick and automatic replacing device for patient - Google Patents

Abstract

The invention discloses a quick and automatic changing device of a lift-free bed sheet for patients, belonging to the field of medical care equipment. The device comprises a main box body and a liftable trapezoid seat. The plug board, the main box body is provided with a first drive mechanism for driving the trapezoidal seat to rise, the outer side of the main box body is provided with a limit mechanism for hindering the rise of the plug board, and an unlocking mechanism for releasing the blocking effect of the limit mechanism; There is a bed sheet storage cavity in the trapezoidal seat, and an outer U-shaped plate and an inner U-shaped plate for holding one side of the clean sheet. One side of the clean sheet is pulled between the bed and the patient; and through the action of the positioning rod and the fourth spring, the outer U-shaped plate can be displaced relative to the inner U-shaped plate, thereby automatically loosening the clamping of the clean sheet. The invention has convenient operation and high work efficiency, does not need to move the patient, and does not need to use a motor.

Description

A device for quick and automatic changing of non-lifting bed sheets for patients

technical field

The invention relates to the field of medical care equipment, in particular to a device for quick and automatic replacement of a lift-free bed sheet for patients.

Background technique

A hospital bed is a necessary medical care device for inpatients. The use of hospital beds is intended to achieve the following intended purposes: (1) prevention, diagnosis, treatment, monitoring, and relief of diseases; (2) diagnosis, treatment, monitoring, relief, and compensation for injuries or disabilities.

For long-term bedridden patients, the bed sheets and bedding need to be replaced frequently. At present, when changing bed sheets and bedding, the patient usually needs to be transported, which is easy to bring pain and discomfort to the patient, and it is inconvenient to move the patient and consumes a lot of money. With more manpower, the workload of medical staff is large, and the work efficiency of medical staff in changing bed sheets is low. Therefore, it is necessary to design a quick and automatic changing device of a lift-free bed sheet for patients.

SUMMARY OF THE INVENTION

1. Technical problems to be solved

The technical problem to be solved by the present invention is to provide a quick and automatic changing device for non-lifting bed sheets for patients, which has ingenious structural design, strong linkage, convenient operation, less labor consumption, high work efficiency, and no need to move the patient. , which can avoid pain and discomfort to the patient; and does not need to use a motor, does not rely on power supply, and has high application value.

2. Technical solutions

In order to solve the above problems, the present invention adopts the following technical solutions:

A lift-free bed sheet quick and automatic replacement device for patients, comprising a main box body, a trapezoidal seat capable of lifting and moving is arranged in the main box body, the longitudinal section of the trapezoidal seat is trapezoidal, and the upper end surface of the trapezoidal seat is trapezoidal. It is an inclined plane, the upper end surface of the trapezoid seat is provided with an inclined slide rail inclined along the upper end surface thereof, a sliding block is slidably connected to the inclined sliding rail, and a horizontally arranged plug board is fixedly connected to the sliding block, so One side of the main box body is provided with a through port for the insertion board to pass through and can be moved up and down. On the side where the trapezoid seat is located, the high-end side of the upper end surface of the trapezoid seat is located on the opposite side of the side where the port is located. The main box is provided with a first driving mechanism for driving the trapezoid seat to rise, and the The limit mechanism that hinders the rise of the insert plate in the early stage of the seat rise, makes the insert plate move horizontally under the obstruction of the limit mechanism, and the upper part of the main box is provided with an unlocking mechanism for releasing the hindering effect of the limit mechanism. , after the unlocking mechanism is triggered, the limiting mechanism loses its blocking effect on the plug-in board, so that the plug-in board moves up and down with the trapezoidal seat. In the initial state, the slider is located at the end of the trapezoidal seat that is absorbed through the opening;

A bed sheet storage cavity for storing bed sheets is opened in the lower part of the trapezoidal seat, the side of the sheet storage cavity facing the through opening is connected to the corresponding side end face of the trapezoidal seat, and the lower part of the main box corresponding to the side where the through opening is located A switch door aligned with the bed sheet storage cavity is hinged, a door handle is fixed on the outer side of the switch door, and a laterally movable outer U-shaped plate is arranged on the top of the bed sheet storage cavity. An inner U-shaped plate is slidably connected below, the longitudinal sections of the outer U-shaped plate and the inner U-shaped plate are both in the shape of a "U" with the opening facing down, and the outer U-shaped plate and the inner U-shaped plate face the opening. One side is used to hold the side of the sheet, a third spring is connected between the outer U-shaped plate and the side of the inner U-shaped plate facing away from the opening, and the main box is provided with a drive for driving the outer U-shaped plate. The second drive mechanism of the plate extending outward, the side of the bed sheet storage cavity facing the opening is provided with a positioning rod located below the inner U-shaped plate, and the positioning rod is fixedly connected with the trapezoidal seat.

Further, the first driving mechanism includes a pedal that can be lifted and lowered at the lower part of the main box, a lifting strip vertically fixed on the pedal, and a first rack vertically fixed on one side of the lifting strip, which is engaged with the lifting strip. The third gear on the lower side of the first rack is vertically fixed on the second rack on the side of the trapezoidal seat facing away from the opening, meshes with the second gear on the upper end of the second rack, and is connected to the third gear The belt drive assembly between the main box and the second gear, the side of the main box facing away from the opening is provided with a first cavity for accommodating the upper part of the lifting strip and a second cavity for accommodating the second gear, so The axis of the second gear is provided with a first rotating shaft fixedly connected with the second gear, the axis of the third gear is provided with a second rotating shaft fixedly connected with the third gear, the first rotating shaft and the first rotating shaft are fixedly connected with the third gear. One ends of the two rotating shafts both extend to the outside of the main casing, the first rotating shaft and the second rotating shaft are both rotatably connected to the main casing, and the belt drive assembly is arranged between the outer ends of the first rotating shaft and the second rotating shaft. After stepping on the pedal, it drives the lifting strip to descend, that is, drives the first rack to move down, thereby drives the third gear to rotate, the second shaft rotates accordingly, and drives the first shaft to rotate through the belt drive assembly, and the second gear rotates. With the rotation, since the first rack is located on the right side of the third gear and the second gear is located on the right side of the second rack, it drives the second rack to rise, thereby effectively driving the trapezoidal seat to rise, no need for a motor, only The medical staff can step on the pedal.

Further, the bottom surface of the main box is fixedly connected with a guide cylinder vertically arranged and located above the pedal, the pedal is fixedly connected with a guide rod extending vertically into the guide cylinder, and the lower port of the guide cylinder is fixedly connected. Just enough for the guide rod to pass through. The guide rod can go up and down with the lifting and lowering of the pedal, and the guide cylinder can limit the lifting and movement of the guide rod to prevent the pedal from tilting.

Further, a second spring longitudinally connected to the lift strip is fixed on the top of the first cavity. When the pedal descends, the lifting strip is lowered accordingly, so that the second spring is stretched. When the pedal is released, the elastic restoring action of the second spring can pull the lifting strip to rise, thereby promoting the return of the pedal.

Further, a longitudinal slide rail for longitudinal sliding of the trapezoidal seat is fixed on the inner wall of the main box body on the side facing away from the opening. The sliding connection between the trapezoidal seat and the main box body is realized by the longitudinal slide rails, which can provide a limit and guiding function for the lifting and moving of the trapezoidal seat, thereby promoting the movement stability of the trapezoidal seat.

Further, the limit mechanism includes a lift limit cylinder sleeved on the outer part of the insert plate, a hydraulic cylinder vertically connected to the upper end of the lift limit cylinder and fixedly connected with the main box, and a hydraulic cylinder fixed on the top of the main box. The switch cylinder, the hydraulic cylinder is provided with a piston extending vertically downward and connected to the lifting limit cylinder, a drain pipe is connected between the upper end of the hydraulic cylinder and the lower end of one side of the switch cylinder, the switch The inner bottom of the cylinder is provided with a blocking block for blocking the drain pipe, the peripheral side of the blocking block is attached to the inner wall of the switch cylinder, and the inner top of the switch cylinder is connected with a first spring that is longitudinally connected to the blocking block , the first spring is a pre-tightening spring, and there are two rows of rollers respectively located on two opposite sides of the insert plate in the lift limiting cylinder. Under the elastic pressure of the first spring, the blocking block is tightly pressed against the bottom of the switch cylinder to ensure that the drain pipe is blocked, so that the liquid in the hydraulic cylinder is stably located in the hydraulic cylinder, which makes it difficult for the piston to rise, that is, it can maintain The position of the lift limit cylinder is located at a lower position. When the trapezoidal seat rises, the lift limit cylinder limits the insert plate and cannot rise with it. Since the upper end surface of the trapezoid seat is an inclined plane, the slider moves along the inclined slide rail to the The side where the mouth is located moves and pushes the insert plate to protrude outward, that is, in the early stage of the trapezoidal seat rising, the insert plate is prevented from rising, so that the insert plate extends laterally and is easily inserted between the patient and the hospital bed.

Further, the unlocking mechanism includes a liquid storage cylinder fixed on the top of the main box body, a resistance rod fixed on the bottom surface of the blocking block and extending to the inner side of the main box body, and a U-shaped frame fixed on the trapezoidal seat, The lower end of the switch cylinder facing away from the liquid discharge pipe is connected with a liquid feeding pipe that communicates with the liquid storage cylinder, and a return flow pipe is connected between the bottom of the liquid storage cylinder and the liquid discharge pipe, and the return flow pipe and A one-way valve is provided on the liquid feeding pipe, the one-way valve on the return pipe is opened towards the liquid discharge pipe, the one-way valve on the liquid feeding pipe is opened towards the liquid storage cylinder, and the resistance rod passes through longitudinally. The bottom of the switch cylinder and the top of the main box, the U-shaped frame is located directly below the interference rod, the left and right sides of the U-shaped frame are in the "U" shape with the opening facing down, and the two ends of the U-shaped frame are in the shape of a "U". They are respectively fixed on the front and rear sides of the trapezoidal seat. During the ascending process of the trapezoidal seat, the U-shaped frame rises along with it. When the insert plate is inserted between the patient and the bed, the U-shaped frame interferes with the interference rod, and pushes the interference rod to rise, and the blocking block rises with it, which can communicate with the drainage. The hydraulic cylinder is connected with the liquid storage cylinder, so that the liquid in the hydraulic cylinder can be easily injected into the liquid storage cylinder, then in the subsequent ascending process of the trapezoidal seat, the lifting limit cylinder and the piston will be pushed. It rises together, and pushes the liquid in the hydraulic cylinder into the liquid storage cylinder. During this process, the insert plate can lift the patient on the hospital bed to facilitate the replacement of the bed sheet.

Further, the second driving mechanism includes a third rack fixed on the end surface of the outer U-shaped plate, a fourth gear meshed above the third rack, a first gear coaxially connected with the fourth gear, and A fixed rack capable of meshing with the first gear, the fourth gear is arranged inside the trapezoidal seat, the axis of the fourth gear is provided with a third rotating shaft fixedly connected with the fourth gear, and the third rotating shaft is Both ends pass through the trapezoidal seat and are slidably connected with the corresponding side panels of the main box. The corresponding side panels of the main box are provided with a bar-shaped chute for the third rotating shaft to move up and down, and the bar-shaped chute passes through the main box. Inside and outside the box, at least one end of the third shaft is fixedly sleeved with a first gear, the fixed rack is fixed on the outer surface of the main box, and the fixed rack is parallel to the bar-shaped chute and located in the bar the upper side of the chute. In the process of raising the patient, after the first gear meshes with the fixed rack, as the trapezoidal seat continues to rise, since the first gear meshes with the fixed rack and the fixed rack does not move, the first gear Rotation, the third shaft rotates along with it, which drives the fourth gear to rotate, which in turn drives the third rack to translate, and the outer U-shaped plate translates accordingly. The profiled board and the inner U-shaped board synchronously protrude to the outside of the main box through the opening, and then the side of the bed sheet clamped between the outer U-shaped board and the inner U-shaped board is pulled to the top of the hospital bed accordingly; When the side of the inner U-shaped plate connected to the third spring contacts the positioning rod, the inner U-shaped plate can no longer continue to extend, but the outer U-shaped plate can still continue to extend, then the inner U-shaped plate will be relative to the outer U-shaped plate. The plate moves to the left, so that one side of the previously clamped bed sheet can be released, and the bed sheet can be separated from the device.

Further, four supporting legs are connected to the bottom surface of the main box, and universal wheels are installed on the bottom of the supporting legs, and a push-pull handle is fixed on one side of the upper end of the main box. Through the support legs, universal wheels and push-pull handles, the transfer and handling of the main box can be carried out more conveniently.

3. Beneficial effects

(1) The present invention is provided with a plug board and its driving structure. When applied, the plug board is first driven to extend, so that the plug board can be inserted between the back of the patient and the hospital bed; It is used to remove the used sheets and lay clean sheets. During this process, the patient does not need to be moved, which can avoid pain and discomfort to the patient.

(2) The present invention is provided with a bed sheet storage cavity for storing clean sheets, and is provided with an outer U-shaped plate and an inner U-shaped plate for holding one side of the clean sheet. The bottom of the plate protrudes, and one side of the clean sheet can be pulled between the hospital bed and the patient; and through the action of the positioning rod and the fourth spring, the positioning rod can hinder the subsequent movement of the inner U-shaped plate and the outer U-shaped plate. It can be displaced relative to the inner U-shaped plate, so that the clamping of the clean sheets can be automatically loosened, the clean sheets can be separated from the device, the automatic laying of the sheets can be realized, the automation of the device can be improved, and the efficiency of changing the sheets can be improved.

(3) In the present invention, a trapezoidal seat that can be moved up and down is provided in the main box. The upper end surface of the trapezoidal seat is an inclined surface, and one side of the plug plate is slidably connected to the upper end surface of the trapezoidal seat. In the early stage, the limit mechanism that hinders the rise of the plugboard and the unlocking mechanism used to release the blocking effect of the limiter mechanism make the plugboard move horizontally under the obstruction of the limiter mechanism; after the unlocking mechanism is triggered, the limiter mechanism is lost. The blocking effect on the plug board makes the plug board move up and down with the trapezoidal seat; a rack and pinion assembly that drives the lateral movement of the outer U-shaped plate is also set up, and the rack and pinion assembly is linked with the lifting movement of the trapezoidal seat. In the later stage of the rise of the trapezoid seat, the rack and pinion assembly is driven, and the sheets are automatically laid. Then it only needs to drive the trapezoidal seat to rise, and it can successively achieve the three operating purposes of inserting the insert plate between the back of the patient and the bed, driving the insert plate to rise to lift the patient, and automatically laying the bed sheet during the process of lifting the patient. , the control is simple, the application is convenient.

(4) The present invention is provided with a pedal, and the pedal is linked with the trapezoidal seat through the rack and pinion drive assembly and the belt drive assembly. When the pedal moves down, the trapezoidal seat rises, and in application, only need to step on the pedal to complete the above. Three operating purposes, and then release the pedal. The whole process is easy to operate, does not need to use a motor, does not depend on the power supply, and has high application value.

To sum up, the present invention has ingenious structural design, strong linkage, convenient operation, less manpower consumption, high work efficiency, no need to move the patient, and can avoid pain and discomfort to the patient; Depends on power supply and has high application value.

Description of drawings

1 is a schematic diagram of the external structure of the present invention in an initial state;

Fig. 2 is the internal structure schematic diagram of the present invention in the initial state;

Fig. 3 is the structure enlarged schematic diagram of area A in Fig. 2;

FIG. 4 is an enlarged schematic view of the trapezoidal seat 35 and its related structures;

5-10 are schematic diagrams of the application process of the present invention, wherein, FIGS. 5 and 6 are schematic diagrams of the first stage, FIGS. 7 and 8 are schematic diagrams of the second stage, and FIGS. 9 and 10 are the schematic diagrams of the third stage. 5, 7 and 9 are schematic diagrams of the external structure of the device in corresponding states; FIGS. 6, 8 and 10 are schematic diagrams of the internal structure of the device in corresponding states.

Reference numerals: 1. Hospital bed; 2. Upholstery; 3. Insert plate; 4. Lifting limit cylinder; 5. Piston; 6. Bar-shaped chute; 7. Hydraulic cylinder; 8. Drain pipe; 9. Return Flow pipe; 10, switch cylinder; 11, one-way valve; 12, liquid storage cylinder; 13, push-pull handle; 14, fixed rack; 15, main box body; 16, first shaft; 17, belt drive assembly; 18 , lifting strip; 19, pedal; 20, second shaft; 21, universal wheel; 22, guide cylinder; 23, support leg; 24, first gear; 25, door handle; 26, switch door; 27, seal Blocking block; 28, the first spring; 29, the interference rod; 30, the longitudinal slide rail; 31, the U-shaped frame; 32, the slider; 33, the second gear; 34, the second spring; 35, the trapezoidal seat; 36, The first rack; 37, the third gear; 38, the inclined slide rail; 39, the second rack; 40, the third spring; 41, the bed sheet storage cavity; 42, the outer U-shaped plate; 43, the inner U-shaped plate; 44, the fourth gear; 45, the third shaft; 46, the positioning rod; 47, the guide rod; 48, the port; 49, the roller; 50, the third rack; 51, the liquid delivery pipe.

Detailed ways

The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

Example 1

As shown in FIG. 1 and FIG. 2 , a device for quick and automatic changing of non-lifting bed sheets for patients is provided on one side of a hospital bed 1, and a soft pad 2 is provided on the patient bed 1. The device includes a main box 15, so the The main box body 15 is provided with a trapezoidal seat 35 capable of lifting and lowering. The longitudinal section of the trapezoidal seat 35 is trapezoidal, and the upper end surface of the trapezoidal seat 35 is an inclined surface. An inclined slide rail 38 with an inclined upper end surface, a sliding block 32 is slidably connected to the inclined slide rail 38, and a horizontally arranged plug board 3 is fixedly connected to the sliding block 32, and one side of the main box 15 is opened There is a through port 48 for the insertion board 3 to pass through and can be moved up and down. The bottom of the through port 48 is not lower than the upper end surface of the hospital bed 1, and the lower end side of the upper end surface of the trapezoidal seat 35 is located on the side where the through port 48 is located. , the high-end side of the upper end surface of the trapezoidal seat 35 is located on the opposite side of the side where the through port 48 is located, the main box body 15 is provided with a first driving mechanism for driving the trapezoidal seat 35 to rise, and the outer side of the main box body 15 is provided with a In the early stage of the rise of the trapezoid seat 35, the limit mechanism that hinders the rise of the plug board 3, under the obstruction of the limit mechanism, the plug board 3 is moved horizontally, and the upper part of the main box 15 is provided with a function for releasing the limit. The unlocking mechanism of the blocking effect of the mechanism, after the unlocking mechanism is triggered, the limiting mechanism loses the blocking effect on the plug-in board 3, so that the plug-in board 3 moves up and down with the trapezoidal seat 35. In the initial state, the slider 32 is located in the trapezoidal seat 35 and is absorbed through one end of the port 48 .

The first drive mechanism includes a pedal 19 that can be lifted and lowered at the lower part of the main box 15 , a lifting strip 18 that is vertically fixed on the pedal 19 , and a first rack 36 that is vertically fixed to one side of the lifting strip 18 . , the third gear 37 engaged with the lower side of the first rack 36, the second rack 39 vertically fixed on the side of the trapezoidal seat 35 facing away from the opening 48, and the second rack 39 engaged with the upper side of the second rack 39 The second gear 33 and the belt drive assembly 17 connected between the third gear 37 and the second gear 33 , the side of the main case 15 facing away from the opening 48 is provided with a first A cavity and a second cavity for accommodating the second gear 33 , the axis of the second gear 33 is provided with the first rotating shaft 16 fixedly connected with the second gear 33 , the axis of the third gear 37 is A second rotating shaft 20 fixedly connected with the third gear 37 is passed through, one end of the first rotating shaft 16 and the second rotating shaft 20 both extend to the outside of the main box 15, and both the first rotating shaft 16 and the second rotating shaft 20 are The belt drive assembly 17 is rotatably connected with the main box 15 , and is provided between the outer ends of the first rotating shaft 16 and the second rotating shaft 20 . After stepping on the pedal 19, the lifting strip 18 is driven to descend, that is, the first rack 36 is driven to move downward, thereby driving the third gear 37 to rotate, and the second rotating shaft 20 rotates accordingly, and drives the first gear through the belt drive assembly 17. When the shaft 16 rotates, the second gear 33 rotates accordingly. Since the first rack 36 is located on the right side of the third gear 37 and the second gear 33 is located on the right side of the second rack 39, it drives the second rack 39 to rise , so that the trapezoidal seat 35 is effectively driven to rise, no motor is needed, and only the medical staff can step on the pedal 19 .

The limit mechanism includes a lift limit cylinder 4 sleeved on the outer part of the insert plate 3, a hydraulic cylinder 7 vertically connected to the upper end of the lift limit cylinder 4 and fixedly connected with the main box 15, and a hydraulic cylinder 7 fixed on the main box. The switch cylinder 10 on the top of the body 15, the hydraulic cylinder 7 is provided with a piston 5 extending vertically downward and connected with the lifting limit cylinder 4, between the upper end of the hydraulic cylinder 7 and the lower end of one side of the switch cylinder 10 A drain pipe 8 is connected. The inner bottom of the switch cylinder 10 is provided with a blocking block 27 for blocking the drain pipe 8. The peripheral side of the blocking block 27 is attached to the inner wall of the switch cylinder 10. The switch cylinder 10 A first spring 28 longitudinally connected to the blocking block 27 is connected to the inner top of the s The rollers 49 on the two opposite sides of the plug-in board 3 can improve the smoothness of translation of the plug-in board 3 relative to the lift limiting cylinder 4 . Under the elastic pressure of the first spring 28, the blocking block 27 is tightly pressed against the inner bottom of the switch cylinder 10 to ensure that the discharge pipe 8 is blocked, so that the liquid in the hydraulic cylinder 7 is stably located in the hydraulic cylinder 7, so that the piston 5 It is difficult to rise, that is, the position of the lift limiting cylinder 4 can be maintained so that it is located at a lower position. When the trapezoidal seat 35 rises, the lifting limiting cylinder 4 restricts the inserting plate 3 and cannot rise with it, because the upper end surface of the trapezoidal seat 35 It is an inclined plane, so that the sliding block 32 moves along the inclined slide rail 38 to the side where the opening 48 is located, and pushes the plug board 3 to extend outward, that is, in the early stage of the trapezoidal seat 35 rising, the plug board 3 is prevented from rising, so that the plug board 3 extends laterally. , easy to insert between the patient and the bed 1.

The unlocking mechanism includes a liquid storage cylinder 12 fixed on the top of the main box 15 , an interference rod 29 fixed on the bottom surface of the blocking block 27 and extending to the inner side of the main box 15 , and a U-shaped fixedly connected to the trapezoidal seat 35 . Frame 31 , the lower end of the switch cylinder 10 facing away from the drain pipe 8 is connected with a liquid feed pipe 51 that communicates with the liquid storage cylinder 12 , and a return pipe 51 is connected between the bottom of the liquid storage cylinder 12 and the liquid discharge pipe 8 . The flow pipe 9, the return pipe 9 and the liquid feed pipe 51 are provided with a one-way valve 11, the one-way valve 11 on the return pipe 9 is opened towards the discharge pipe 8, and the liquid feed pipe 51 The one-way valve 11 is opened toward the liquid storage cylinder 12, the interference rod 29 longitudinally passes through the bottom of the switch cylinder 10 and the top of the main box 15, the U-shaped frame 31 is located directly below the interference rod 29, the U The left and right sides of the U-shaped frame 31 are both in a “U” shape with an opening facing downward, and both ends of the U-shaped frame 31 are respectively fixed on the front and rear sides of the trapezoidal seat 35 . During the ascending process of the trapezoidal seat 35, the U-shaped frame 31 rises accordingly. When the inserting board 3 is inserted between the patient and the hospital bed 1, the U-shaped frame 31 interferes with the interference rod 29 and pushes the interference rod 29 to rise, and the blocking block 27 As it rises, the liquid discharge pipe 8 and the liquid supply pipe 51 can be connected, so that the hydraulic cylinder 7 and the liquid storage cylinder 12 are connected, so that the liquid in the hydraulic cylinder 7 can be easily injected into the liquid storage cylinder 12, then the trapezoidal seat During the subsequent ascending process of 35, the lifting limit cylinder 4 and the piston 5 will be pushed up together, and the liquid in the hydraulic cylinder 7 will be pushed into the liquid storage cylinder 12. Raised for easy bed linen changes.

As shown in FIG. 4 , a sheet storage cavity 41 for storing sheets is opened in the lower part of the trapezoidal seat 35 , and the side of the sheet storage cavity 41 facing the opening 48 penetrates to the corresponding side end surface of the trapezoidal seat 35 , so The lower part of the main box 15 corresponding to the side where the opening 48 is located is hinged with a switch door 26 aligned with the bed sheet storage cavity 41. There is a laterally movable outer U-shaped plate 42, and an inner U-shaped plate 43 is slidably connected below the outer U-shaped plate 42. The longitudinal sections of the outer U-shaped plate 42 and the inner U-shaped plate 43 are all open. Downward "U" shape, the side of the outer U-shaped plate 42 and the inner U-shaped plate 43 facing the opening 48 is used to clamp the side of the sheet, the outer U-shaped plate 42 and the inner U-shaped plate 43 A third spring 40 is connected between the side facing away from the opening 48 . The main box 15 is provided with a second driving mechanism for driving the outer U-shaped plate 42 to extend outward. A positioning rod 46 located below the inner U-shaped plate 43 is provided on the side facing the through port 48 , and the positioning rod 46 is fixedly connected with the trapezoidal seat 35 .

The second driving mechanism includes a third rack 50 fixed on the upper end surface of the outer U-shaped plate 42 , a fourth gear 44 meshing above the third rack 50 , and a first gear coaxially connected to the fourth gear 44 . 24, and a fixed rack 14 that can mesh with the first gear 24, the fourth gear 44 is arranged inside the trapezoidal seat 35, and the axis of the fourth gear 44 is provided with a fourth gear 44 that is fixedly connected to the fourth gear 44. Three rotating shafts 45 . Both ends of the third rotating shaft 45 penetrate through the trapezoidal seat 35 and are slidably connected with the corresponding side panels of the main box 15 . The moving bar-shaped chute 6, the bar-shaped chute 6 penetrates the inner and outer sides of the main box 15, the first gear 24 is fixedly sleeved on at least one end of the third rotating shaft 45, and the fixed rack 14 is fixed on the On the outer surface of the main box 15 , the fixed rack 14 is parallel to the bar-shaped chute 6 and located on one side of the upper part of the bar-shaped chute 6 . In the process of raising the patient, after the first gear 24 meshes with the fixed rack 14, as the trapezoidal seat 35 continues to rise, the first gear 24 meshes with the fixed rack 14, but the fixed rack 14 does not move. , so that the first gear 24 rotates, the third shaft 45 rotates accordingly, drives the fourth gear 44 to rotate, and then drives the third rack 50 to translate, and the outer U-shaped plate 42 translates accordingly. The type plate 43 is not subject to other forces, so that the outer U-shaped plate 42 and the inner U-shaped plate 43 synchronously protrude to the outside of the main box 15 through the through port 48, and then are clamped by the outer U-shaped plate 42 and the inner U-shaped plate 43. One side of the bed sheet between 43 is then pulled to the top of the hospital bed 1; when the side of the inner U-shaped plate 43 connected to the third spring 40 abuts against the positioning rod 46, the inner U-shaped plate 43 can no longer continue to extend , but the outer U-shaped plate 42 can still continue to extend, then the inner U-shaped plate 43 will move to the left relative to the outer U-shaped plate 42, so that one side of the previously clamped sheet can be loosened to realize the separation of the sheet from the device. .

Example 2

The difference between this embodiment and Embodiment 1 is:

In this embodiment, as shown in FIG. 2 , the bottom surface of the main box 15 is fixedly connected with a guide cylinder 22 vertically arranged and located above the pedal 19 , and the pedal 19 is fixedly connected with a guide cylinder extending vertically to the The guide rod 47 in the 22, the lower port of the guide cylinder 22 is just for the guide rod 47 to pass through. The guide rod 47 can move up and down with the lifting and lowering of the pedal 19 , and the guide cylinder 22 can limit the lifting and movement of the guide rod 47 to prevent the pedal 19 from tilting.

In this embodiment, as shown in FIG. 2 , a second spring 34 longitudinally connected to the lift strip 18 is fixed on the top of the first cavity. When the pedal 19 descends, the lifting strip 18 descends with it, so that the second spring 34 is stretched. When the pedal 19 is released, the elastic restoring action of the second spring 34 can pull the lifting strip 18 to rise, thereby promoting the pedal 19 reset.

In this embodiment, as shown in FIG. 2 , a longitudinal slide rail 30 for longitudinal sliding of the trapezoidal seat 35 is fixed on the inner wall of the main box 15 on the side facing away from the opening 48 . The sliding connection between the trapezoidal seat 35 and the main box 15 is realized by the longitudinal slide rails 30 , which can provide a limiting and guiding function for the lifting and moving of the trapezoidal seat 35 , thereby promoting the movement stability of the trapezoidal seat 35 .

In this embodiment, as shown in FIG. 1 and FIG. 2 , four supporting legs 23 are connected to the bottom surface of the main box 15 , and universal wheels 21 are installed on the bottoms of the supporting legs 23 . A push-pull handle 13 is fixed on the upper end side of the box body 15 . Through the support legs 23 , the universal wheels 21 and the push-pull handle 13 , the main box 15 can be transferred and transported more conveniently.

Others are the same as in Example 1.

The specific working principle of the above-mentioned quick and automatic changing device for non-lifting bed sheets for patients is as follows:

To change the bed sheet, first open the switch door 26, put a clean bed sheet into the bed sheet storage cavity 41, clamp one side of the bed sheet between the outer U-shaped plate 42 and the inner U-shaped plate 43, and then push and pull Move the device to the side of the bed 1 by the handle 13, pay attention to make the opening 48 face the bed 1, and make the outer end of the insert 3 rest on the edge of the soft pad 2, after braking the universal wheel 21, Let at least one medical staff step on the pedal 19 to drive the lifting strip 18 to descend, that is, drive the first rack 36 to move downward, thereby driving the third gear 37 to rotate, and the second shaft 20 rotates accordingly, and passes through the belt drive assembly. 17 drives the first shaft 16 to rotate, and the second gear 33 rotates accordingly. Since the first rack 36 is located on the right side of the third gear 37, and the second gear 33 is located on the right side of the second rack 39, it drives the second gear 33. The rack 39 rises, thereby effectively driving the trapezoidal seat 35 to rise, and the process is divided into three stages:

The first stage: under the elastic pressure of the first spring 28, the blocking block 27 is tightly pressed against the bottom of the switch cylinder 10, and the drain pipe 8 is blocked, so that the liquid in the hydraulic cylinder 7 is stably located in the hydraulic cylinder 7 , so that it is difficult for the piston 5 to rise, that is, the position of the lift limit cylinder 4 can be maintained, so that it is located at a lower position. When the trapezoidal seat 35 rises, the lift limit cylinder 4 restricts the insertion plate 3 and cannot be raised accordingly. The upper end face of 35 is an inclined plane, so that the slider 32 moves along the inclined slide rail 38 to the side where the opening 48 is located, and pushes the plug-in board 3 to extend outward until the plug-in board 3 is fully extended. Inserted between the patient and the hospital bed 1; and during this process, the U-shaped frame 31 rises with the trapezoidal seat 35, and when the insertion plate 3 is fully extended, the U-shaped frame 31 interferes with the interference rod 29, as shown in Figures 5 and 6 ;

The second stage: after the U-shaped frame 31 interferes with the interference rod 29, with the rise of the trapezoidal seat 35, the interference rod 29 is pushed up, and the blocking block 27 rises accordingly, connecting the liquid discharge pipe 8 and the liquid feeding pipe 51, so that the hydraulic cylinder 7 is communicated with the liquid storage cylinder 12, so that the liquid in the hydraulic cylinder 7 can be easily injected into the liquid storage cylinder 12, then during the continuous rising of the trapezoidal seat 35, the lifting limit cylinder 4 and the piston 5 will be pushed up together. , under the directional action of the one-way valve 11, the liquid in the hydraulic cylinder 7 is pushed into the liquid storage cylinder 12 through the liquid discharge pipe 8 and the liquid feeding pipe 51. rise until the bed sheet storage cavity 41 is communicated with the through port 48, and the bottoms of the outer U-shaped plate 42 and the inner U-shaped plate 43 are not lower than the bottom of the through port 48, and the first gear 24 just meshes with the fixed rack 14, as shown in the figure 7 and FIG. 8, the patient on the hospital bed 1 can be partially lifted to facilitate the removal of the used sheets;

The third stage: after the first gear 24 meshes with the fixed rack 14, as the trapezoidal seat 35 continues to rise, since the first gear 24 meshes with the fixed rack 14 and the fixed rack 14 does not move, the first gear 24 rotates, the third shaft 45 rotates accordingly, drives the fourth gear 44 to rotate, and then drives the third rack 50 to translate, and the outer U-shaped plate 42 translates accordingly. force, so that the outer U-shaped plate 42 and the inner U-shaped plate 43 synchronously protrude to the outside of the main box 15 through the through port 48, then the bed sheet that is clamped between the outer U-shaped plate 42 and the inner U-shaped plate 43 One side is then pulled to the top of the side of the bed 1 facing away from the main box 15; when the side of the inner U-shaped plate 43 connected to the third spring 40 abuts against the positioning rod 46, the inner U-shaped plate 43 can no longer continue. Extend, but the outer U-shaped plate 42 can continue to extend, then the inner U-shaped plate 43 will move to the left relative to the outer U-shaped plate 42, as shown in Figures 9 and 10, so that the previously clamped sheets can be released. On one side of the bed, the bed sheet can be separated from the device. After the bed sheet is dropped, it can directly fall on the cushion 2 of the hospital bed 1 .

After the sheets are arranged and leveled, the pedal 19 is released, the trapezoidal seat 35 loses the power to rise, and the trapezoidal seat 35 begins to descend under the action of its own gravity, which drives the U-shaped frame 31 to lose the interference effect on the interference rod 29, and the blocking block 27 is in the The elastic force of the first spring 28 moves downward until the opposite ends of the liquid discharge pipe 8 and the liquid supply pipe 51 are re-blocked, and the third rotating shaft 45 descends with the trapezoidal seat 35 to drive the first gear 24 along the fixed teeth. The bar 14 moves downward, so that the first gear 24 rotates in the opposite direction, which drives the outer U-shaped plate 42 and the inner U-shaped plate 43 to retract and move into the main box 15; during the descending process of the trapezoidal seat 35, it drives the second The gear 33 rotates in the reverse direction, and after being driven by the belt drive assembly 17, it will drive the third gear 37 to rotate in the reverse direction, thereby driving the first rack 36 and the lifting strip 18 to rise, thereby driving the pedal 19 to rise and reset; At the same time, under the action of the patient's gravity, the insert plate 3 is pushed down, so that a suction force is generated in the hydraulic cylinder 7. With the directional action of the one-way valve 11, the liquid in the liquid storage cylinder 12 passes through the return pipe 9 and the discharge pipe. 8 Return to the hydraulic cylinder 7; when the piston 5 descends to the initial position, the patient just descends to the bed sheet, after that, the lifting limit cylinder 4 can no longer descend, that is, the inserting plate 3 can no longer descend, but the trapezoidal seat 35 continues. When it descends, the inserting board 3 will be pulled to retract and move into the main box 15 until it is reset, that is, the replacement of the bed sheet is completed.

It can be seen from the above content that the present invention has ingenious structural design, strong linkage, convenient operation, less manpower consumption, high work efficiency, no need to move the patient, and can avoid pain and discomfort to the patient; and does not require the use of a motor. , does not depend on power supply, and has high application value.

Those of ordinary skill in the art should realize that the above embodiments are only used to illustrate the present invention, but not to limit the present invention. Changes and modifications will fall within the scope of the claims of the present invention.

Claims (9)

1. A device for quick and automatic replacement of a lift-free bed sheet for patients, characterized in that it comprises a main box (15), and a trapezoidal seat (35) capable of lifting and lowering is arranged in the main box (15), so that the The longitudinal section of the trapezoidal seat (35) is trapezoidal, and the upper end surface of the trapezoidal seat (35) is an inclined surface. A sliding block (32) is slidably connected to the inclined slide rail (38), and a horizontally arranged plug board (3) is fixedly connected to the sliding block (32), and one side of the main box body (15) is opened There is a through port (48) for the plug board (3) to pass through and can move up and down, the lower end side of the upper end surface of the trapezoidal seat (35) is located on the side where the through port (48) is located, and the upper end of the trapezoidal seat (35) is located. The high-end side of the end face is located on the opposite side of the side where the through port (48) is located, the main box (15) is provided with a first driving mechanism for driving the trapezoidal seat (35) to rise, and the outer side of the main box (15) A limit mechanism is provided for hindering the rise of the insert plate (3) in the early stage of the rise of the trapezoid seat (35), and the upper part of the main box body (15) is provided with an unlocking mechanism for releasing the blocking effect of the limit mechanism; A bed sheet storage cavity (41) for storing bed sheets is opened in the lower part of the trapezoidal seat (35), and the side of the sheet storage cavity (41) facing the through opening (48) is connected to the corresponding position of the trapezoidal seat (35). On the side end face, a switch door (26) aligned with the bed sheet storage cavity (41) is hinged on the lower part of the main box (15) corresponding to the side where the through port (48) is located, and the switch door (26) is fixed on the outer side. There is a door handle (25), an outer U-shaped plate (42) that can move laterally is arranged on the inner top of the bed sheet storage cavity (41), and an inner U-shaped plate (42) is slidably connected to the bottom of the outer U-shaped plate (42). Plate (43), the longitudinal sections of the outer U-shaped plate (42) and the inner U-shaped plate (43) are in the "U" shape with the opening facing down, the outer U-shaped plate (42) and the inner U-shaped plate (42) (43) The side facing the through opening (48) is used to clamp the side of the sheet, between the outer U-shaped plate (42) and the side of the inner U-shaped plate (43) facing away from the through opening (48). A third spring (40) is connected, the main box (15) is provided with a second driving mechanism for driving the outer U-shaped plate (42) to extend outward, and the bed sheet storage cavity (41) faces the passageway inwardly. One side of the mouth (48) is provided with a positioning rod (46) located below the inner U-shaped plate (43), and the positioning rod (46) is fixedly connected with the trapezoidal seat (35). 2 . The device for quick and automatic changing of a non-lifting bed sheet for a patient according to claim 1 , wherein the first driving mechanism comprises a pedal (19) that can be lifted and lowered at the lower part of the main box (15). 3 . , the lifting strip (18) vertically fixed on the pedal (19), the first rack (36) vertically fixed on one side of the lifting strip (18), meshing with a lower part of the first rack (36) The third gear (37) on the side, vertically fixed on the second rack (39) on the side of the trapezoidal seat (35) facing away from the opening (48), meshes with the first gear on the side of the upper end of the second rack (39). The second gear (33), and the belt drive assembly (17) connected between the third gear (37) and the second gear (33), the main casing (15) facing away from the through port (48) There is a first cavity for accommodating the upper part of the lifting strip (18) and a second cavity for accommodating a second gear (33), the axis of the second gear (33) is provided with the second gear (33) A fixedly connected first rotating shaft (16), the axis of the third gear (37) is provided with a second rotating shaft (20) fixedly connected with the third gear (37), and the first rotating shaft ( 16) and one end of the second rotating shaft (20) both extend to the outside of the main casing (15), and both the first rotating shaft (16) and the second rotating shaft (20) are rotatably connected to the main casing (15), the The belt drive assembly (17) is arranged between the first rotating shaft (16) and the outer end of the second rotating shaft (20). 3 . The device for quick and automatic changing of a lift-free bed sheet for a patient according to claim 2 , wherein the bottom surface of the main box ( 15 ) is fixedly connected with a vertical set and located above the pedal ( 19 ). 4 . A guide cylinder (22), a guide rod (47) vertically extending into the guide cylinder (22) is fixedly connected to the pedal (19), and the lower port of the guide cylinder (22) is just for the guide rod (47) pass through. The device for quick and automatic changing of a lift-free bed sheet for a patient according to claim 2, characterized in that a second spring longitudinally connected to the lifting strip (18) is fixed on the top of the first chamber. (34). 5 . The device for quick and automatic replacement of a lift-free bed sheet for patients according to claim 1 , wherein a trapezoidal supply is fixed on the inner wall of the main box ( 15 ) on the side facing away from the opening ( 48 ). 6 . The seat (35) longitudinally slides the longitudinal rail (30). 6. The device according to claim 1, characterized in that the limiting mechanism comprises a lifting limiting cylinder (4) sleeved on the outer part of the insert plate (3). , a hydraulic cylinder (7) vertically connected to the upper end of the lifting limit cylinder (4) and fixedly connected to the main box (15), and a switch cylinder (10) fixed to the top of the main box (15), the The hydraulic cylinder (7) is provided with a piston (5) extending vertically downward and connected with the lifting limit cylinder (4). A drain pipe (8) is connected, the inner bottom of the switch cylinder (10) is provided with a blocking block (27) for blocking the drain pipe (8), and the inner top of the switch cylinder (10) is connected with a longitudinal Connected to the first spring (28) on the blocking block (27), the lift limiting cylinder (4) is provided with two rows of rollers (49) respectively located on two opposite sides of the insert plate (3). 7. The device according to claim 6, wherein the unlocking mechanism comprises a liquid storage tank (12) fixed on the top of the main box (15), and is fixed on the The contact rod (29) on the bottom surface of the blocking block (27) and extending to the inner side of the main box body (15), and the U-shaped frame (31) fixedly connected to the trapezoidal seat (35), the switch cylinder (10) The lower end of the side facing away from the liquid discharge pipe (8) is connected with a liquid feeding pipe (51) which communicates with the liquid storage cylinder (12), and the bottom of the liquid storage cylinder (12) is connected with the liquid discharge pipe (8). There is a backflow pipe (9), the backflow pipe (9) and the liquid feeding pipe (51) are provided with a one-way valve (11), and the interference rod (29) longitudinally passes through the opening of the switch cylinder (10). On the bottom and the top of the main box (15), the U-shaped frame (31) is located directly below the interference rod (29), and the left and right sides of the U-shaped frame (31) are in the shape of a "U" with an opening facing down , the two ends of the U-shaped frame (31) are respectively fixed on the front and rear sides of the trapezoidal seat (35). 8. The device according to claim 1, wherein the second driving mechanism comprises a third rack ( 50), a meshing fourth gear (44) located above the third rack (50), a first gear (24) coaxially connected with the fourth gear (44), and capable of meshing with the first gear (24) The fixed rack (14), the fourth gear (44) is arranged inside the trapezoidal seat (35), and the axis of the fourth gear (44) is pierced with a fourth gear (44) fixedly connected Three rotating shafts (45), both ends of the third rotating shaft (45) pass through the trapezoidal seat (35) and are slidably connected with the corresponding side panels of the main box (15), and the corresponding sides of the main box (15) The panel is provided with a bar-shaped chute (6) for the third shaft (45) to move up and down. A first gear (24) is fixedly sleeved on at least one end of the fixed rack (14), the fixed rack (14) is fixed on the outer surface of the main box (15), and the fixed rack (14) is parallel to the bar-shaped chute (6). ) and on the upper side of the bar chute (6). 9. The device for quick and automatic changing of a lift-free bed sheet for a patient according to any one of claims 1 to 8, wherein four supporting legs (23) are connected to the bottom surface of the main box (15). and universal wheels (21) are installed on the bottoms of the supporting legs (23), and a push-pull handle (13) is fixed on the upper end side of the main box body (15).

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