Transmission mechanism for medical patient transfer bed
By adopting gears, racks and transmission gear structures on the medical handling bed, the overall movement and transmission of the bed are achieved, and the problems of high costs and complex structures caused by independent power mechanisms in the prior art are solved, and simple structure and low cost are achieved and the effect of easy use reduces the work of transporting patients and avoids adverse effects on patients.
Patent Information
- Application Number
- CN201911062014.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2019-11-01
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2039-11-01
AI Technical Summary
The existing medical handling beds have independent use of different power mechanisms, which leads to high cost, complex structure and inconvenient use, making it difficult to carry patients and easily have adverse effects on patients.
A set of movable bed driven by a power mechanism is adopted to realize the overall movement and transmission of the bed through the gears, racks and transmission gear structures, simplify the structure, reduce the manufacturing cost, and control the rollers and transmission through the meshing and separation of the transmission gears. The sports of the belt avoid long-distance high and low transport.
The overall movement of the bed and the movement of the transmission mechanism are achieved, the simplicity, low cost and convenience of use are alleviated, the work of transporting patients is reduced, the adverse effects on patients are avoided, and the efficiency and safety of patient transfer are improved.
Smart Images
Figure CN110680628B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a medical device. Background Art
[0002] The currently available medical transport beds generally include a vehicle body and a bed mounted on the vehicle body, and the bed cannot be moved on the vehicle body. When in use, since the patient needs to be transferred from the sickbed to the medical transport bed or vice versa, several people are required to carry the bed sheet by the four corners, which is laborious and can easily cause adverse effects on the patient. In order to solve this problem, the bed needs to be designed to be movable left and right, and at the same time, the bed needs to have a conveying capability to assist in transferring the patient from the bed or into the bed. The traditional design is that the movement of the movable bed and the conveying structure on the bed are independently powered by different power mechanisms. This structural method not only causes high costs, but also makes the bed structure complex and bulky, which is very inconvenient to use. Summary of the invention
[0003] The object of the present invention is to provide a transmission mechanism for a medical patient transfer bed which can realize the overall movement of the bed and the action of the bed's transmission mechanism by using a set of power mechanisms, has a simple structure, low manufacturing cost, and is easy to use.
[0004] The present invention is implemented as follows: it includes a movable bed set on a bed frame and driven by a power mechanism, the movable bed includes a movable bed frame and a bed set on the movable bed frame, the bed includes rollers set on the left and right sides of the movable bed frame, and transmission belts (belts or cloth belts) wound around the rollers on the left and right sides, a gear is rotatably set under the roller on the outer side of one side of the movable bed frame, a transmission gear that can mesh with the gear is set on the shaft of the roller on the movable bed frame above the gear, the transmission gear slides along the axis of the roller and drives the roller to rotate, and a rack guiding the bed side is set on the bed frame below the gear, and the gear meshes with the rack.
[0005] When it is necessary to transfer a patient from a hospital bed or an operating table to the movable bed of the present invention, the movable bed is first driven by a power mechanism to move out of the bed frame from the side of the bed and against the hospital bed or the operating table, and then continues to move forward under the patient. As the movable bed moves forward, the rack drives the gear to rotate, and the gear drives the transmission gear to rotate in the opposite direction, and drives the conveyor belt to move toward the bed through the roller, and then as the movable bed moves under the patient, the conveyor belt and the patient will not move relative to each other due to the forward movement of the movable bed, so that the patient moves toward the bed, thereby effectively reducing the work of transporting the patient and making it easier for the patient to move to the bed; after the patient moves to the movable bed, the transmission gear leaves the gear, and then the movable bed is reset by the power mechanism. Since the transmission gear leaves the gear, the gear will not drive the transmission gear to rotate, so the conveyor belt will not move until the movable bed is reset. During this process, the transmission gear always leaves the gear, so that the patient is transferred from the hospital bed or the operating table to the medical patient transfer bed of the present invention. During this process, since there is no need to transport the patient over a long distance and at a high level, it saves time when transferring the patient. The patient is moved back to the bed frame by the power mechanism, and the transmission gear is kept in mesh with the gear. In this process, the transmission gear is moved to the gear position so that it is always in mesh with the gear. In this way, when the movable bed moves back, the rack drives the gear to rotate, the gear drives the transmission gear to rotate, and the transmission gear drives the transmission belt to move toward the bed or the operating table through the roller. The patient and the bed or the operating table will not move relative to each other due to the resetting of the movable bed, so that the patient will not move back with the movable bed. As the movable bed is transferred from the bed or the operating table to the bed frame, the patient is transferred to the bed or the operating table. Since there is no need to carry the patient over a long distance and at a high level, the patient is transferred with less effort, and the adverse effects of the transportation process on the patient can be avoided.
[0006] The movable bed is transmitted to the roller and the transmission belt of the bed by using a rack, a gear and a transmission gear, and the transmission gear driving the roller can move along the axial direction of the roller, so as to set whether the transmission gear is meshed with the gear according to the need. In this way, there is no need to set up a power mechanism to drive the roller, thereby simplifying the overall structure of the movable bed and reducing the manufacturing cost. At the same time, the rotation of the roller can be conveniently controlled. In addition, the structure of the gear driving the transmission gear can be satisfied. While the rack drives the roller to rotate in the required direction of rotation, the rack can be set below the movable bed, so that the setting of the rack will not affect the use of the movable bed.
[0007] A spring is arranged on the shaft of the roller to press the transmission gear toward the gear. A circular rotating part is connected to the outside of the transmission gear. A circular groove is arranged on the outer surface of the rotating part. A shift fork with a shift lever is arranged in the groove. The width of the groove is greater than the thickness of the shift fork so that the shift fork can move left and right along the groove. The shift lever is connected to the electric push rod. Under normal circumstances, the spring presses the transmission gear toward the gear, so that the gear and the transmission gear are meshed. In this way, the rotating gear drives the transmission gear to rotate, and drives the transmission belt to move through the roller; when the transmission gear needs to leave the gear, the shift lever is pushed by the electric push rod, and the shift lever drives the transmission part to move outward through the shift fork, and drives the transmission gear through the transmission part to overcome the pressure of the spring and separate it from the gear. In this way, the rotation of the gear will not be transmitted to the transmission gear, so that the belt on the movable bed will not move.
[0008] Compared with the prior art, the present invention has the advantages of using a set of power mechanism to realize the overall movement of the bed and the action of the bed's transmission mechanism, simple structure, low manufacturing cost and easy use. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 It is a structural schematic diagram of the present invention;
[0010] Figure 2 for Figure 1 Right side view of the gear and rack part;
[0011] Figure 3 A flowchart for moving a patient from a hospital bed or operating table to a transfer bed of the present invention;
[0012] Figure 4 The present invention is a flowchart for moving a patient from the transfer bed of the present invention to a hospital bed or an operating table. DETAILED DESCRIPTION
[0013] The present invention is now described in further detail with reference to the accompanying drawings and embodiments:
[0014] like Figure 1 , 23, comprising a movable bed 2 set on a bed frame 1 driven by a power mechanism 3, the movable bed 2 comprising a movable bed frame 2a, a bed 2b set on the movable bed frame 2a, the bed 2b comprising rollers 2b1 set on the left and right sides of the movable bed frame 2a, a transmission belt 2b2 (belt or cloth belt) wound around the rollers 2b1 on the left and right sides, and a roller 2b1 on one side of the movable bed frame 2a (under the roller 2b1 on one side of the two sides of one side of the movable bed frame 2a) under the outer side of the roller 2b1 A gear 4 is rotatably provided on the roller 2b1 on the movable bed frame 2a above the gear 4, and a transmission gear 5 that can mesh with the gear 4 is provided on the axis of the roller 2b1. The transmission gear 5 slides along the axis of the roller 2b1 (a key or flange is provided on the axis of the roller 2b1, and a guide groove is provided on the transmission gear 5 corresponding to the key or flange) to move and drive the roller 2b1 to rotate. A rack 6 guiding the bed side is provided on the bed frame 1 below the gear 4, and the gear 4 meshes with the rack 6.
[0015] The diameter of one of the rollers 2b1 connected to the transmission gear 5 is larger than that of the other transmission gear 5. An upper guide roller 2b3 and a lower guide roller 2b4 are provided on the movable bed frame 2a at one of the rollers 2b1. Under the pressure of the upper guide roller 2b3 and the lower guide roller 2b4, the transmission belt 2b2 is in a horizontal state. In this way, since the diameter of the other roller 2b1 is small, the thickness of the movable transmission 2 is small, and it is easy to extend into the space between the patient and the bed or the operating table. Since the diameter of one of the rollers 2b1 connected to the transmission gear 5 is large, there is enough space to install the transmission gear 5, the gear 4 and other components.
[0016] One of the rollers 2b1 connected to the transmission gear 5 is provided with a cover 2d fixedly connected to the movable bed frame 2a, and the cover 2d shields the upper guide roller 2b3 to prevent the upper guide roller 2b3 from affecting objects or patients on the bed 2b.
[0017] like Figure 1 , 2As shown, a spring 7 is arranged on the shaft 2b11 of the roller 2b1 (a screw 8 is screwed on the shaft end of the shaft 2b11 of the roller 2b1, and the spring 7 is located between the screw 8 and the transmission gear 5), and a circular ring-shaped rotating member 9 is connected to the outer side of the transmission gear 5 (the rotating member 9 is fixedly connected to the transmission gear 5 or is integrally processed), and a circular ring-shaped groove 9a is arranged on the outer surface of the rotating member 9, and a shift fork 11 with a shift rod 10 is arranged in the groove 9a, and the width of the groove 9a is greater than the thickness of the shift fork 11, so that the shift fork 11 can move left and right in the inner groove 9a, and the shift rod 10 is driven to move by an electric push rod 12 arranged on the movable bed frame 2a. When the electric push rod 12 is working, it drives the shift rod 10 to drive the transmission gear 5 to leave the gear 4 through the shift fork 11 to achieve the separation effect. When it needs to be closed, the electric push rod 12 is reset. Under the action of the spring 7, the transmission gear 5 leans against the gear 4 until the teeth of the transmission gear 5 are aligned with the tooth grooves of the gear 4, so that the teeth of the transmission gear 5 slide into the tooth grooves of the gear 4 and mesh.
[0018] like Figure 1 As shown, the power mechanism 3 includes a motor 3a arranged on the bed frame 1, a screw rod 3c arranged on the bed frame 1 and driven by the motor 3a through a transmission mechanism 3b (a transmission wheel / transmission belt transmission mechanism or a sprocket / chain transmission mechanism) to rotate, and a nut 3d screwed on the screw rod 3c, and the nut 3d is connected to the movable bed frame 2a.
[0019] like Figure 1 As shown, lower rollers 2b5 are respectively provided on the movable bed frame 2a below the two rollers 2b1, and lower conveyor belts 2b6 (belts or cloth belts) are wrapped around the two lower rollers 2b5, and the lower front end of the lower conveyor belt 2b6 is fixed on the bed frame 1.
[0020] like Figure 1 As shown, a partition plate 2b7 is provided between the upper conveyor belt 2b2 and the lower conveyor belt 2b6, and the partition plate 2b7 is a nylon lubricating plate. The partition plate 2b7 plays the role of isolation and lubrication, so that the movement of the upper conveyor belt 2b2 and the lower conveyor belt 2b6 will not be affected by each other.
[0021] like Figure 3As shown, when patient A needs to be transferred from the hospital bed or operating table B to the movable bed 2, the movable bed 2 is first driven by the power mechanism 3 to move out of the side of the bed from the bed frame 1 and lean against the hospital bed or operating table B, and then continues to move forward under the patient A. As the movable bed 2 moves forward, the rack 6 drives the gear 4 to rotate, and the gear 4 drives the transmission gear 5 to rotate in the opposite direction, and drives the conveyor belt 2b2 to move toward the movable bed 2 through the roller 2b1. As the movable bed 2 moves under the patient A, the conveyor belt 2b2 and the patient A will not move relative to each other due to the forward movement of the movable bed 2, so that the patient A moves onto the movable bed 2, thereby effectively reducing the work of transporting the patient A and making it easier for the patient A to move onto the movable bed 2. At the same time, as the movable bed 2 moves forward, the lower conveyor belt 2b6 rotates counterclockwise, and the lower conveyor belt 2b6 and the hospital bed Or there is no relative movement between the two operating tables B, which is conducive to the movable bed 2 to move forward against the hospital bed or the operating table B, and at the same time, it will not pull the bed sheet and affect the movement of patient A to the movable bed; after patient A moves onto the movable bed 2, the electric push rod 12 is used to make the transmission gear 5 leave the gear 4, and then the movable bed 2 is driven to reset by the power mechanism 3. Since the transmission gear 5 leaves the gear 4, the gear 4 will not drive the transmission gear 5 to rotate, so that the transmission belt 2b2 will not move until the movable bed 2 is reset. During this process, the transmission gear 5 always leaves the gear 4. In this way, patient A is transferred from the hospital bed or the operating table B to the medical patient transfer bed of the present invention. During this process, since there is no need to transport the patient over a long distance and at a high level, the patient is transferred with less effort, avoiding the adverse effects of the transportation process on the patient.
[0022] like Figure 4 As shown, when it is necessary to transfer the patient A from the movable bed 2 of the present invention to the sickbed or operating table B, the electric push rod 12 is used to make the transmission gear 5 leave the gear 4, and the movable bed 2 is first driven by the power mechanism 3 to move from the bed frame 1 to the side of the bed frame 1 and lean against the sickbed or operating table B, so that the patient A is located above the sickbed or operating table B, then the electric push rod 12 is reset, so that the transmission gear 5 is always meshed with the gear 4, and then the power mechanism 3 is used to drive the movable bed 2 to move from the sickbed or operating table B back to the bed frame 1. In this process, since the transmission gear 5 moves to the gear 4, it is always meshed with the gear 4. In this way, the movable bed 2 When the bed 2 moves back, the rack 6 drives the gear 4 to rotate, and the gear 4 drives the transmission gear 5 to rotate. The transmission gear 5 drives the conveyor belt 2b2 to move toward the bed or operating table B through the roller 2b1. The patient A and the bed or operating table B will not move relative to each other due to the resetting of the movable bed 2, so that the patient A will not move back with the movable bed 2. As the movable bed 2 is transferred from the bed or operating table B to the medical patient transfer bed of the present invention, the patient A is transferred to the bed or operating table B. Since there is no need to transport the patient over long distances and at high and low altitudes, the patient can be transferred with less effort, and the adverse effects of the transportation process on the patient can be avoided.
[0023] In order to show the structure clearly, the roller 2b1 and the lower roller 2b5 in the attached drawings are enlarged. In fact, the diameters of the roller 2b1 and the lower roller 2b5 are very small, so that the thickness of the movable bed 2 is small and it is easy to extend between the patient A and the bed or the operating table B.
Claims
1. A transmission mechanism for a medical patient transfer bed, comprising a movable bed arranged on a bed frame driven by a power mechanism, characterized in that The movable bed includes a movable bed frame and a bed arranged on the movable bed frame. The bed includes rollers arranged on the left and right sides of the movable bed frame and transmission belts wound around the rollers on the left and right sides. A gear is rotatably arranged under the roller on the outer side of one side of the movable bed frame. A transmission gear that can mesh with the gear is arranged on the shaft of the roller on the movable bed frame above the gear. The transmission gear slides along the key or flange on the shaft of the roller and drives the roller to rotate. A rack guiding the bed side is arranged on the bed frame below the gear. The gear meshes with the rack. A spring that presses the transmission gear toward the gear is arranged on the shaft of the roller. A circular ring-shaped rotating member is connected to the outer side of the transmission gear. The outer surface of the rotating part is provided with an annular groove, a shift fork with a shift rod is provided in the groove, the width of the groove is greater than the thickness of the shift fork, the shift rod is driven to move by an electric push rod provided on the movable bed frame, one of the rollers connected to the transmission gear has a larger diameter than the other transmission gear, an upper guide roller and a lower guide roller are provided on the movable bed frame at one of the rollers, one of the rollers connected to the transmission gear is provided with a cover fixedly connected to the movable bed frame, the cover shields the upper guide roller, lower rollers are respectively provided on the movable bed frame under the two rollers, a lower conveyor belt is surrounded by the two lower rollers, and the lower front end of the lower conveyor belt is fixed on the bed frame; When it is necessary to transfer the patient from the hospital bed or operating table to the mobile bed, the power mechanism is first used to drive the mobile bed to move out of the side of the bed frame and lean against the hospital bed or operating table, and then continue to move forward under the patient. As the mobile bed moves forward, the rack drives the gear to rotate, and the gear drives the transmission gear to rotate in the opposite direction, driving the transmission belt to move toward the mobile bed through the roller, and then as the mobile bed moves under the patient, the transmission belt and the patient will not move relative to each other due to the forward movement of the mobile bed, thereby moving the patient onto the mobile bed; after the patient is moved to the mobile bed, the transmission gear is separated from the gear, and then the power mechanism is used to drive the mobile bed to reset. Since the transmission gear is separated from the gear, the gear will not drive the transmission gear to rotate, and thus the transmission belt will not move until the mobile bed is reset, thus transferring the patient from the hospital bed or operating table to the medical patient transfer bed; when it is necessary to transfer the patient When transferring from a movable bed to a hospital bed or an operating table, the transmission gear is separated from the gear, and the movable bed is first driven by a power mechanism to move from the bed frame out of the side of the bed frame and against the hospital bed or the operating table, so that the patient is located above the hospital bed or the operating table, and then the transmission gear is always engaged with the gear, and then the movable bed is driven by the power mechanism to move from the hospital bed or the operating table back to the bed frame. In this process, since the transmission gear moves to the gear, it is always engaged with the gear. In this way, when the movable bed moves back, the rack drives the gear to rotate, and the gear drives the transmission gear to rotate. The transmission gear drives the transmission belt to move toward the hospital bed or the operating table through the roller. The patient and the hospital bed or the operating table will not move relative to each other due to the resetting of the movable bed, so that the patient will not move back with the movable bed. As the movable bed is transferred from the hospital bed or the operating table to the movable bed, the patient is transferred to the hospital bed or the operating table; A partition is arranged between the upper conveyor belt and the lower conveyor belt. The partition is a nylon lubricating plate. The partition plays the role of isolation and lubrication so that the movements of the upper conveyor belt and the lower conveyor belt will not be affected by each other.