CN110680628A - Transmission mechanism for medical patient transfer bed - Google Patents

Abstract

A transmission mechanism for a medical patient transfer bed, including a movable bed arranged on a bed frame driven by a power mechanism, characterized in that the movable bed includes a movable bed frame, a bed arranged on the movable bed frame, and the bed includes a movable bed frame arranged on the left and right sides of the movable bed frame. The rollers on both sides and the conveyor belts wound on the rollers on the left and right sides are provided with gears rotating under the rollers on the outer side of one side of the movable bed frame, and the shafts of the rollers on the movable bed frame above the gears are provided with The transmission gear can be meshed with the gear. The transmission gear slides along the axis of the roller and drives the roller to rotate. The bed frame below the gear is provided with a rack that guides the side of the bed, and the gear meshes with the rack. Compared with the prior art, the present invention has the advantages of simple structure, low manufacturing cost and convenient use, which can realize the overall movement of the bed and the movement of the bed transmission mechanism by using a set of power mechanism.

Description

Transmission mechanism for medical patient transfer bed

technical field

The present invention relates to a medical device.

Background technique

At present, the existing medical transport beds generally include a car body and a bed arranged on the car body, and the bed cannot be moved on the car body. When in use, since the patient needs to be transferred from the hospital bed to the medical transport bed or vice versa, several people are required to carry the four corners of the sheet, which is laborious to transport, and is likely to cause adverse effects on the patient. In order to solve this problem, the bed needs to be designed as a bed that can move left and right, and at the same time, the bed must have the ability to convey, so as to assist in transferring the patient out of the bed or into the bed. The traditional design is the movement of the movable bed and the conveying of the bed. The structure adopts different power mechanisms independently. Such a structure not only causes high cost, but also makes the structure of the bed complicated and bulky, which is very inconvenient to use.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a transmission mechanism for medical patient transfer bed with simple structure, low manufacturing cost and convenient use, which can realize the overall movement of the bed and the action of the transmission mechanism of the bed by using a set of power mechanism.

The present invention is realized in this way, including a movable bed set on a bed frame driven by a power mechanism, the movable bed includes a movable bed frame, a bed set on the movable bed frame, and the bed includes rollers arranged on the left and right sides of the movable bed frame , The transmission belt (belt or cloth belt) wound on the rollers on the left and right sides is rotated under the rollers on the outer side of one side of the movable bed frame. Gears are arranged on the shafts of the rollers on the movable bed frame above the gears. A transmission gear which can be meshed with the gear is provided, the transmission gear slides and moves along the axis of the roller and drives the roller to rotate.

When the patient needs to be transferred from the hospital bed or the operating table to the movable bed of the present invention, the movable bed is first driven by the power mechanism to move out of the side of the bed from the bed frame and lean on the hospital bed or operating table, and then continue to go under the patient. As the movable bed moves forward, the rack drives the gears to rotate, the gears drive the transmission gears to rotate in the opposite direction, and the rollers drive the conveyor belt to move toward the bed, and then move down the patient with the movable bed. There will be no relative movement due to the forward movement of the movable bed, so that the patient moves to 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 is removed from the gear, Then, the movable bed is driven to reset by the power mechanism. Since the transmission gear leaves the gear, the gear will not drive the transmission gear to rotate, so the transmission belt will not move until the movable bed is reset. During this process, the transmission gear always leaves the gear, In this way, the patient is transferred from the hospital bed or the operating table to the medical patient transfer bed of the present invention. In this process, since there is no need to transport the patient over a long distance and high and low, the transfer of the patient is labor-saving and avoids the transfer process to the patient. Adverse effects; when the patient needs to be transferred from the medical patient transfer bed of the present invention to the hospital bed or the operating table, the transmission gear is separated from the gear, and the movable bed is driven by the power mechanism to move out of the side of the bed from the bed frame and lean on the bed or On the operating table, the patient is positioned above the hospital bed or operating table, and then, the transmission gear is always meshed with the gear, and then the movable bed is driven by the power mechanism to move from the hospital bed or operating table back to the bed frame. Move to the gear so that it is always meshed 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 conveyor belt to move towards the bed or operating table through the roller. There will be no relative movement between the hospital bed or the operating table due to the reset 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 operating table to the bed frame, the patient will be transferred to the hospital bed Or on the operating table, since there is no need to transport patients over long distances and heights, it is labor-saving when transferring patients, which can avoid adverse effects on patients during the transport process.

Racks, gears, and transmission gears are used to transmit the moving power of the movable bed to the rollers and the transmission belt of the bed, so that the transmission gears that drive the rollers can move axially along the axis of the rollers, so that the transmission gears can be set as required. Whether it is meshed with the gear or not, there is no need to set up a power mechanism to drive the roller, thereby simplifying the overall structure of the movable bed, reducing the manufacturing cost, and at the same time, the rotation of the roller can be easily controlled. In addition, by adopting the structure in which the gear drives the transmission gear, the rack can be arranged under the movable bed while the rack drives the roller to rotate in the required rotation direction, so that the arrangement of the rack will not affect the movable bed. usage of.

A spring for pressing the transmission gear to the gear is arranged on the shaft of the roller, an annular rotating member is connected to the outer side of the transmission gear, an annular groove is arranged on the outer surface of the rotating member, and a belt is arranged in the groove. For a shift fork with a shift lever, 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, and the shift lever is connected to the electric push rod. Under normal circumstances, the spring presses the transmission gear to the gear, so that the gear meshes with the transmission gear. In this way, the rotating gear drives the transmission gear to rotate, and the roller drives the transmission belt to move; when the transmission gear needs to be separated from the gear, the electric push rod is used to push the dial. The lever and the lever drive the transmission part to move outward through the fork, and the transmission part drives the transmission gear to overcome the pressure of the spring to 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 does not move. will move.

Compared with the prior art, the present invention has the advantages of simple structure, low manufacturing cost and convenient use that a set of power mechanism can realize the overall movement of the bed and the action of the bed transmission mechanism.

Description of drawings

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the right side view of the gear and rack part of Fig. 1;

Fig. 3 is the operation flow chart of removing the patient from the hospital bed or the operating table to the transfer bed of the present invention;

FIG. 4 is a flow chart of the operation of removing a patient from the transfer bed of the present invention to a patient bed or operating table.

Detailed ways

The present invention is now described in further detail in conjunction with the accompanying drawings and embodiments:

As shown in Figures 1, 2, and 3, it includes a movable bed 2 that is driven by a power mechanism 3 and is provided on the bed frame 1. The movable bed 2 includes a movable bed frame 2a, a bed 2b arranged on the movable bed frame 2a, and a bed 2b. It includes rollers 2b1 arranged on the left and right sides of the movable bed frame 2a, and a transmission belt 2b2 (belt or cloth belt) wound around the rollers 2b1 on the left and right sides. One of the two sides of one side of the movable bed frame 2a is under the roller 2b1 on one side or under the rollers 2b1 on both sides) rotatably provided with a gear 4, and on the axis of the roller 2b1 on the movable bed frame 2a above the gear 4 There is a transmission gear 5 that can mesh with the gear 4, and the transmission gear 5 slides along the axis of the roller 2b1 (the shaft of the roller 2b1 is provided with a key or flange, and the transmission gear 5 corresponding to the key or flange is provided with a guide groove) Moving and driving the roller 2b1 to rotate, the bed frame 1 under the gear 4 is provided with a rack 6 guiding the side of the bed, and the gear 4 is engaged with the rack 6 .

The diameter of one of the rollers 2b1 connected with the transmission gear 5 is larger than that of the other transmission gear 5. The movable bed frame 2a at one of the rollers 2b1 is provided with an upper guide roller 2b3 and a lower guide roller 2b4. Under the pressing of the guide roller 2b3 and the lower guide roller 2b4, the conveyor belt 2b2 is in a horizontal state. In this way, due to the small diameter of the other roller 2b1, the thickness of the movable conveyor 2 is small, and it is easy to extend into the patient and the bed. Or between the operating tables, and one of the rollers 2b1 connected with the transmission gear 5 has a large diameter, there is enough space to install the transmission gear 5, the gear 4 and other components.

One of the rollers 2b1 connected with the transmission gear 5 is provided with a cover 2d that is 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 causing the objects on the bed 2b or the patient. influences.

As shown in Figures 1 and 2, the shaft 2b11 of the roller 2b1 is provided with a spring 7 that presses the transmission gear 5 to the gear 4 (the shaft end of the shaft 2b11 of the roller 2b1 is screwed with a screw 8, and the spring 7 is located in the screw 8 and the transmission gear 5), the outer side of the transmission gear 5 is connected with a ring-shaped rotating member 9 (the rotating member 9 is fixedly connected with the transmission gear 5 or is integrally processed), and the outer surface of the rotating member 9 is provided with a circular ring Shaped groove 9a, the groove 9a is provided with a fork 11 with a lever 10, the width of the groove 9a is greater than the thickness of the fork 11, so that the fork 11 can move left and right in the groove 9a, the lever 10 It is driven to move by the electric push rod 12 arranged on the movable bed frame 2a. When the electric push rod 12 is working, the shift rod 10 is driven, so as to drive the transmission gear 5 away from the gear 4 through the shift fork 11 to realize the separation effect, and when the timing is required, the electric push rod 12 is reset, and under the action of the spring 7, the transmission gear 5 rests on the gear 4 until the teeth of the transmission gear 5 are on the tooth slot of the gear 4, so that the teeth of the transmission gear 5 slide into the tooth slot of the gear 4 and mesh.

As shown in FIG. 1 , the power mechanism 3 includes a motor 3a provided on the bed frame 1, and is rotated by the motor 3a through a transmission mechanism 3b (transmission wheel/belt type transmission mechanism or sprocket/chain type transmission mechanism). The lead screw 3c on the frame 1 and the nut 3d screwed on the lead screw 3c are connected with the movable bed frame 2a.

As shown in FIG. 1 , lower rollers 2b5 are respectively provided on the movable bed frame 2a below the two rollers 2b1, and the two lower rollers 2b5 are surrounded by a lower conveyor belt 2b6 (belt or cloth belt), and the bottom of the lower conveyor belt 2b6 The front end is fixed on the bed frame 1 .

As shown in FIG. 1 , 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 2b7 plays the role of isolation and lubrication, so that the movements of the upper conveyor belt 2b2 and the lower conveyor belt 2b6 will not be affected by each other.

As shown in Figure 3, 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 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. On B, and then continue to move forward under the patient A. With the forward movement of the movable bed 2, the rack 6 drives the gear 4 to rotate, the gear 4 drives the transmission gear 5 to rotate in the opposite direction, and the roller 2b1 drives the transmission belt 2b2 to move. The bed 2 moves, and then as the movable bed 2 moves under the patient A, there will be no relative movement between the conveyor belt 2b2 and the patient A due to the forward movement of the movable bed 2, so that the patient A moves to the movable bed 2, thereby Effectively reduce the work of carrying patient A and make it easier for patient A to move to 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 is connected to the hospital bed or operating table B. There is no relative movement between them, which is beneficial for the movable bed 2 to move forward against the hospital bed or operating table B, and at the same time, it will not pull the sheets and affect the movement of patient A to the movable bed; after patient A moves to the movable bed 2, The transmission gear 5 is separated from the gear 4 by the electric push rod 12, 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. In this way, the transmission belt 2b2 is also It will not move until the movable bed 2 is reset. During this process, the transmission gear 5 always leaves the gear 4, so that the patient A is transferred from the hospital bed or operating table B to the medical patient transfer bed of the present invention. During this process , Since there is no need to transport patients over long distances and heights, it is labor-saving when transferring patients and avoids adverse effects on patients during the transport process.

As shown in FIG. 4 , when the patient A needs to be transferred from the movable bed 2 of the present invention to the hospital bed or the operating table B, the transmission gear 5 is separated from the gear 4 by the electric push rod 12, and the movable bed 2 is driven by the power mechanism 3 from the gear 4 first. The bed frame 1 moves out of the side of the bed frame 1 and leans against the bed or operating table B, so that patient A is located above the hospital bed 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, Then, the movable bed 2 is driven by the power mechanism 3 to move from the patient bed or the operating table B back to the bed frame 1. During 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 During the backward movement, the rack 6 drives the gear 4 to rotate, the gear 4 drives the transmission gear 5 to rotate, and the transmission gear 5 drives the conveyor belt 2b2 to move in the direction of the hospital bed or operating table B through the roller 2b1, between patient A and the hospital bed or operating table B. There will be no relative movement due to the reset 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 hospital bed or the operating table B to the medical patient transfer bed of the present invention, the patient A will not move back. It is transferred to the hospital bed or operating table B. Since there is no need to transport the patient over a long distance and high and low, it is labor-saving when transferring the patient, which can avoid the adverse effect of the transport process on the patient.

In order to show the structure clearly, the roller 2b1 and the lower roller 2b5 in the drawings are enlarged. In fact, the diameters of the roller 2b1 and the lower roller 2b5 are very small, so that the The thickness is small, and it is easy to extend into the space between patient A and the bed or operating table B.

Claims (6)

1. The transmission mechanism for the medical patient transfer bed comprises the movable bed that is driven by the power mechanism and is arranged on the bed frame, it is characterized in that the movable bed comprises the movable bed frame, the bed that is arranged on the movable bed frame, and the bed includes the movable bed that is arranged on the movable bed The rollers on the left and right sides of the frame and the conveyor belts wound around the rollers on the left and right sides are rotated under the rollers on the outer side of one side of the movable bed frame. Gears are arranged on the shafts of the rollers on the movable bed frame above the gears. There is a transmission gear that can be meshed with gears. The transmission gear slides along the keys or flanges on the shaft of the roller and drives the roller to rotate. The bed frame below the gear is provided with a rack that guides the side of the bed, and the gear and the rack are engaged. . 2. The transmission mechanism for a medical patient transfer bed according to claim 1, wherein a spring for pressing the transmission gear to the gear is arranged on the shaft of the roller, and an annular rotating member is connected to the outside of the transmission gear, The outer surface of the rotating part is provided with a circular groove, and a fork with a lever is arranged in the groove. The width of the groove is greater than the thickness of the fork. drive movement. 3. The transmission mechanism for a medical patient transfer bed according to claim 1 or 2, wherein the diameter of one of the rollers connected with the transmission gear is larger than that of the other transmission gear, and the movable bed frame at one of the rollers has a larger diameter than the other transmission gear. The upper guide roller and the lower guide roller are arranged on it. 4 . The transmission mechanism for a medical patient transfer bed according to claim 3 , wherein a cover fixedly connected to the movable bed frame is provided on one of the rollers connected with the transmission gear, and the cover shields the upper guide roller. 5 . 5. The transmission mechanism for a medical patient transfer bed according to claim 2, 3 or 4, wherein the movable bed frame below the two rollers is respectively provided with a lower roller, and the two lower rollers are surrounded by a lower transmission belt , the lower front end of the lower conveyor belt is fixed on the bed frame. 6. The transmission mechanism for a medical patient transfer bed according to claim 5, wherein when the patient needs to be transferred from the hospital bed or the operating table to the movable bed, the movable bed is first driven by the power mechanism to move out of the bed frame from the bed frame It leans on the side of the 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, the gear drives the transmission gear to rotate in the opposite direction, and the roller drives the conveyor belt to move forward. The bed moves, and as the movable bed moves under the patient, there will be no relative movement between the conveyor belt and the patient due to the forward movement of the movable bed, so that the patient moves to the movable bed; after the patient moves to the movable bed, the transmission gear Leave the gear, and then drive the movable bed to reset through the power mechanism. Since the transmission gear leaves the gear, the gear will not drive the transmission gear to rotate, so the transmission belt will not move until the movable bed is reset, so that the patient can be removed from the hospital bed or The operating table is transferred to the medical patient transfer bed of the present invention; when the patient needs to be transferred from the movable bed of the present invention to the hospital bed or the operating table, the transmission gear is separated from the gear, and the movable bed is driven by the power mechanism to move out of the bed frame first. The side of the bed frame is leaned against the hospital bed or operating table, so that the patient is located above the hospital bed or operating table, then, the transmission gear is always meshed with the gear, and then the movable bed is driven by the power mechanism to move from the hospital bed or operating table back to the bed frame , in this process, since the transmission gear moves to the gear, it is always meshed 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 through the roller. When the bed or operating table moves in the direction, there will be no relative movement between the patient and the bed or operating table due to the reset of the movable bed, so that the patient will not move back with the movable bed, and the movable bed will be transferred from the hospital bed or operating table to the movable bed. On the bed, the patient is transferred to the hospital bed or operating table.

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