阅读说明：本技术 医用病人转移床用传动机构 (Transmission mechanism for medical patient transfer bed ) 是由 陶涛 孙立才 于 2019-11-01 设计创作，主要内容包括：医用病人转移床用传动机构,包括由动力机构带动的设置在床架上的活动床,其特征在于活动床包括活动床架、设置在活动床架上的床,床包括设置在活动床架左右两边的滚轴、绕在左右两边的滚轴上的传输带,在活动床架的其中一边的外侧的滚轴下面转动设置有齿轮,齿轮上方的活动床架上的滚轴的轴上设置有可与齿轮啮合的传动齿轮,传动齿轮沿滚轴轴线滑动移动并带动滚轴转动,齿轮下方的床架上设置有导向床侧的齿条,齿轮与齿条啮合。本发明与已有技术相比,具有采用一套动力机构就能实现床的整体移动及床的传输机构动作的、结构简单、制造成本低的、使用方便的优点。(A transmission mechanism for a medical patient transfer bed comprises a movable bed arranged on a bed frame and driven by a power mechanism, and is characterized in that the movable bed comprises a movable bed frame and a bed arranged on the movable bed frame, the bed comprises rolling shafts arranged on the left side and the right side of the movable bed frame and transmission belts wound on the rolling shafts on the left side and the right side, a gear is rotatably arranged below the rolling shaft on the outer side of one side of the movable bed frame, a transmission gear capable of being meshed with the gear is arranged on a shaft of the rolling shaft on the movable bed frame above the gear, the transmission gear slides along the axis of the rolling shaft and drives the rolling shaft to rotate, a rack for guiding the bed side is arranged on the bed frame below. Compared with the prior art, the invention has the advantages of simple structure, low manufacturing cost and convenient use, and can realize the integral movement of the bed and the action of the transmission mechanism of the bed by adopting one set of power mechanism.)

1. A transmission mechanism for a medical patient transfer bed comprises a movable bed arranged on a bed frame and driven by a power mechanism, and is characterized in that the movable bed comprises a movable bed frame and a bed arranged on the movable bed frame, the bed comprises rolling shafts arranged on the left side and the right side of the movable bed frame and transmission belts wound on the rolling shafts on the left side and the right side, a gear is rotatably arranged below the rolling shaft on the outer side of one side of the movable bed frame, a transmission gear capable of being meshed with the gear is arranged on a shaft of the rolling shaft on the movable bed frame above the gear, the transmission gear slides along a key or a flange on the shaft of the rolling shaft and drives the rolling shaft to rotate, a rack for guiding the bed side is arranged on the bed.

2. The transmission mechanism as claimed in claim 1, wherein a spring is provided on the shaft of the roller to press the transmission gear against the gear, a circular rotating member is connected to the outside of the transmission gear, a circular groove is provided on the outer surface of the rotating member, a shift fork having a shift lever is provided in the groove, the width of the groove is larger than the thickness of the shift fork, and the shift lever is moved by an electric push rod provided on the movable bed frame.

3. The driving mechanism for a medical patient transfer bed as claimed in claim 1 or 2, wherein one of the rollers connected to the driving gear has a larger diameter than the other driving gear, and an upper guide roller and a lower guide roller are provided on the movable frame at the one of the rollers.

4. The transmission mechanism for a medical patient transfer bed as claimed in claim 3, wherein a cover fixedly connected to the movable frame is provided on one of the rollers connected to the transmission gear, and the cover shields the upper guiding roller.

5. The transmission mechanism for medical patient transfer bed as claimed in claim 2, 3 or 4, wherein the movable bed frame under the two rollers is respectively provided with a lower roller, the two lower rollers are surrounded by a lower transmission belt, and the lower front end of the lower transmission belt is fixed on the bed frame.

6. The transmission mechanism of 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 driven by the power mechanism to move out of the side of the bed frame and lean against the hospital bed or the operating table, and then continuously moves forward to the lower side of 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, the transmission belt is driven by the roller to move toward the movable bed, and further, as the movable bed moves toward the lower side of the patient, the transmission belt and the patient do not move relatively due to the forward movement of the movable bed, so that the patient moves toward the movable bed; after the patient moves onto the movable bed, the transmission gear is separated from the gear, then the movable bed is driven to reset through the power mechanism, and the transmission gear is separated from the gear, so that the gear cannot drive the transmission gear to rotate, and the transmission belt cannot move until the movable bed resets, and therefore the patient is transferred onto the medical patient transfer bed from a sickbed or an operating table; when a patient needs to be transferred from the movable bed to a sickbed or an operating table, the transmission gear is separated from the gear, the movable bed is driven by the power mechanism to move out of the side surface of the bed frame from the bed frame and lean against the sickbed or the operating table, the patient is positioned above the sickbed or the operating table, then the transmission gear is always meshed with the gear, then the movable bed is driven by the power mechanism to move back to the bed frame from the sickbed or the operating table, in the process, the transmission gear is moved to the gear to be always meshed with the gear, therefore, in the back movement of the movable bed, the rack drives the gear to rotate, the gear drives the transmission gear to rotate, the transmission gear drives the transmission belt to move towards the sickbed or the operating table through the rolling shaft, the patient and the sickbed or the operating table cannot move relatively due to the reset of the movable bed, as the mobile bed is transferred from the bed or table to the mobile bed, the patient is transferred to the bed or table.

Technical Field

The present invention relates to a medical device.

Background

The existing medical transport bed generally comprises a vehicle body and a bed arranged on the vehicle body, wherein the bed cannot move on the vehicle body. When the medical bed is used, a patient needs to be transferred from a sickbed to a medical carrying bed or vice versa, and when the medical bed is carried, a plurality of people need to carry the patient by lifting the four corners of the bed sheet, so that the patient is strenuous to carry the medical bed, and the patient is easily affected badly. In order to solve the problem, the bed needs to be designed into a bed capable of moving left and right, meanwhile, the bed has the conveying capacity so as to assist in conveying a patient out of the bed or into the bed, the traditional design is that the moving structure of the movable bed and the conveying structure of the bed respectively and independently adopt different power mechanisms, and the structure mode causes high cost, and meanwhile, the bed is complex in structure, large in size and inconvenient to use.

Disclosure of Invention

The invention aims to provide a transmission mechanism for a medical patient transfer bed, which can realize the integral movement of the bed and the action of a transmission mechanism of the bed by adopting a set of power mechanisms, has simple structure, low manufacturing cost and convenient use.

The movable bed comprises a movable bed frame and a bed arranged on the movable bed frame, wherein the movable bed is driven by a power mechanism, the movable bed comprises a movable bed frame and the bed arranged on the movable bed frame, the bed comprises rolling shafts arranged on the left side and the right side of the movable bed frame and a transmission belt (a belt or a cloth belt) wound on the rolling shafts on the left side and the right side, a gear is rotatably arranged below the rolling shaft on the outer side of one side of the movable bed frame, a transmission gear capable of being meshed with the gear is arranged on a shaft of the rolling shaft on the movable bed frame above the gear, the transmission gear slides along the axis of the rolling shaft and drives the rolling shaft to rotate, and a rack guiding.

When a patient needs to be transferred from a hospital bed or an operating table to the movable bed, the movable bed is driven by the power mechanism to move out of the side face of the bed from the bedstead and lean against the hospital bed or the operating table, then the movable bed is continuously moved forwards towards the lower side of the patient, the rack drives the gear to rotate along with the forward movement of the movable bed, the gear drives the transmission gear to rotate in the opposite direction, the transmission belt is driven by the roller to move towards the bed, and further the movable bed moves towards the lower side of the patient, relative motion between the transmission belt and the patient due to the forward movement of the movable bed can not occur, so that the patient moves towards the bed, the work of carrying the patient is effectively reduced, and the patient can more easily; after a patient moves onto the movable bed, the transmission gear is separated from the gear, then the movable bed is driven to reset through the power mechanism, and the transmission gear is separated from the gear, so that the transmission gear cannot be driven to rotate, the transmission belt cannot move until the movable bed resets, and the transmission gear is separated from the gear all the time in the process, so that the patient is transferred onto the medical patient transfer bed from a sickbed or an operating table, and in the process, the patient does not need to be carried in a long distance and at a high or low position, so that labor is saved when the patient is transferred, and adverse effects on the patient in the carrying process are avoided; when a patient needs to be transferred from the medical patient transfer bed to a sickbed or an operating table, the transmission gear is separated from the gear, the movable bed is driven by the power mechanism to move out of the side surface of the bed from the bed frame and lean against the sickbed or the operating table, so that the patient is positioned above the sickbed or the operating table, then the transmission gear is always meshed with the gear, then the movable bed is driven by the power mechanism to move back to the bed frame from the sickbed or the operating table, in the process, the transmission gear moves to the gear and is always meshed with the gear, therefore, in the back movement of the movable bed, the rack drives the gear to rotate, the gear drives the transmission gear to rotate, the transmission gear drives the transmission belt to move towards the sickbed or the operating table through the rolling shaft, the patient and the sickbed or the operating table cannot move relatively due to the reset of the movable bed, along with the movable bed from the sick bed or on the bed frame is shifted to the bedstead on, the patient just is shifted to sick bed or operating table, owing to need not long distance and height transport patient, consequently, laborsaving when shifting the patient can avoid handling process to patient's harmful effects.

The rack, the gear and the transmission gear are adopted to transmit the moving power of the movable bed to the roller and the transmission belt of the bed, 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 or not according to the requirement. In addition, the structure that the gear drives the transmission gear is adopted, the rack can be arranged below the movable bed when the rack drives the rolling shaft to rotate along the required rotating direction, and therefore the use of the movable bed cannot be influenced by the arrangement of the rack.

The shaft of the rolling shaft is provided with a spring pressing the transmission gear to the gear, the outer side of the transmission gear is connected with a circular rotating piece, the outer surface of the rotating piece is provided with a circular groove, a shifting fork with a shifting lever is arranged in the groove, the width of the groove is larger than the thickness of the shifting fork, so that the shifting fork can move left and right along the groove, and the shifting lever is connected to the electric push rod. Under normal conditions, the spring presses the transmission gear to the gear, so that the gear is meshed with the transmission gear, the rotating gear drives the transmission gear to rotate, and the transmission belt is driven to move through the rolling shaft; when the transmission gear is required to leave the gear, the shifting rod is pushed through the electric push rod and drives the transmission piece to move outwards through the shifting fork, the transmission piece drives the transmission gear to overcome the pressure of the spring and separate the transmission piece from the gear, and therefore the rotation of the gear cannot be transmitted to the transmission gear, and the belt on the movable bed cannot move.

Compared with the prior art, the invention has the advantages of simple structure, low manufacturing cost and convenient use, and can realize the integral movement of the bed and the action of the transmission mechanism of the bed by adopting one set of power mechanism.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a right side view of the gear and rack portion of FIG. 1;

FIG. 3 is a flow chart of the operation of removing a patient from a patient bed or table to the transfer bed of the present invention;

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

Detailed Description

The invention will now be described in further detail with reference to the accompanying drawings and examples:

as shown in fig. 1, 2 and 3, the movable bed 2 driven by a power mechanism 3 and arranged on a bedstead 1 is included, the movable bed 2 comprises a movable bedstead 2a and a bed 2b arranged on the movable bedstead 2a, the bed 2b comprises rollers 2b1 arranged on the left and right sides of the movable bedstead 2a and a transmission belt 2b2 (belt or cloth belt) wound on the rollers 2b1 on the left and right sides, a gear 4 is rotatably arranged under the roller 2b1 on the outer side of one side of the movable bedstead 2a (under the roller 2b1 on one side of the two sides of one side of the movable bedstead 2a or under the roller 2b1 on both sides), a transmission gear 5 capable of meshing with the gear 4 is arranged on the shaft of the roller 2b1 on the movable bedstead 2a above the gear 4, the transmission gear 5 slides along the axis of the roller 2b1 (the roller 2b1 is provided with a key or flange on the shaft, the transmission gear 5 corresponding to the key or flange is provided with a guide groove) and drives the transmission gear 1, the bedstead 1 below the gear 4 is provided with a rack 6 guiding the bed side, and the gear 4 is meshed with the rack 6.

One of the rollers 2b1 connected to the transmission gear 5 has a larger diameter than the other transmission gear 5, and the movable frame 2a at one of the rollers 2b1 is provided with an upper guide roller 2b3 and a lower guide roller 2b4, and the transmission belt 2b2 is in a horizontal state under the pressing of the upper guide roller 2b3 and the lower guide roller 2b4, so that the thickness of the movable transmission 2 is small due to the small diameter of the other roller 2b1, and the movable transmission 2 can easily enter between a patient and a hospital bed or an operating table, and the large diameter of one of the rollers 2b1 connected to the transmission gear 5 allows a sufficient space for installing 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 fixedly connected with the movable bed frame 2a, and the cover 2d shields the upper guiding roller 2b3 so as to prevent the upper guiding roller 2b3 from affecting objects or patients on the bed 2 b.

As shown in fig. 1 and 2, a spring 7 for pressing the transmission gear 5 to the gear 4 is disposed on the shaft 2b11 of the roller 2b1 (a screw 8 is screwed to the shaft end of the shaft 2b11 of the roller 2b1, the spring 7 is disposed between the screw 8 and the transmission gear 5), an annular rotating member 9 (the rotating member 9 and the transmission gear 5 are fixedly connected or integrally processed) is connected to the outer side of the transmission gear 5, an annular groove 9a is disposed on the outer surface of the rotating member 9, a shift fork 11 with a shift lever 10 is disposed in the groove 9a, 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 groove 9a, and the shift lever 10 is driven by an electric push rod. When the electric push rod 12 works, the driving lever 10 is driven, so that the transmission gear 5 is driven to leave the gear 4 through the shifting fork 11, the separation effect is realized, when the separation effect is needed, the electric push rod 12 is reset, the transmission gear 5 leans against the gear 4 under the action of the spring 7 until the teeth of the transmission gear 5 are aligned to the tooth grooves of the gear 4, and the teeth of the transmission gear 5 slide into the tooth grooves of the gear 4 and are meshed.

As shown in fig. 1, the power mechanism 3 includes a motor 3a disposed on the bedstead 1, a lead screw 3c rotatably disposed on the bedstead 1 and driven by the motor 3a via a transmission mechanism 3b (a transmission wheel/transmission belt type transmission mechanism or a chain wheel/chain type transmission mechanism), and a nut 3d screwed on the lead screw 3c, wherein the nut 3d is connected with the movable bedstead 2 a.

As shown in fig. 1, the movable frame 2a under the two rollers 2b1 is provided with a lower roller 2b5, respectively, and the two lower rollers 2b5 are surrounded by a lower belt 2b6 (belt or cloth strap), and the lower front end of the lower belt 2b6 is fixed to the 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 plate 2b7 plays a role of isolation lubrication, so that the movement of the upper conveyor belt 2b2 and the lower conveyor belt 2b6 are not affected by each other.

As shown in fig. 3, when a patient a needs to be transferred from a hospital bed or an operating table B to a movable bed 2, the movable bed 2 is driven by a power mechanism 3 to move out of the side of the bed from a bed frame 1 and lean against the hospital bed or the operating table B, and then continuously moves forward under the patient a, as the movable bed 2 moves forward, a rack 6 drives a gear 4 to rotate, the gear 4 drives a transmission gear 5 to rotate in the opposite direction, a roller 2B1 drives a transmission belt 2B2 to move towards the movable bed 2, and further as the movable bed 2 moves down towards the patient a, relative motion between the transmission belt 2B2 and the patient a due to the forward movement of the movable bed 2 does not occur, so that the patient a moves up to the movable bed 2, thereby effectively reducing the work of carrying the patient a, making the patient a move onto the movable bed 2 more easily, and simultaneously, as the movable bed 2 moves forward, the lower transmission belt 2B6 rotates counterclockwise, the lower conveying belt 2B6 does not move relative to the sickbed or the operating table B, so that the movable bed 2 can move forwards by leaning against the sickbed or the operating table B, and meanwhile, a bed sheet cannot be pulled to influence the movement of the patient A to the movable bed; after the patient A moves onto the movable bed 2, the transmission gear 5 leaves the gear 4 through the electric push rod 12, then the movable bed 2 is driven to reset through the power mechanism 3, and the transmission gear 5 leaves the gear 4, so the gear 4 cannot drive the transmission gear 5 to rotate, and the transmission belt 2B2 cannot move until the movable bed 2 resets, and in the process, the transmission gear 5 always leaves the gear 4, so the patient A is transferred onto the medical patient transfer bed from the sickbed or the operating table B, and in the process, the patient is not required to be transferred in a long distance and at a high or low position, so that labor is saved when the patient is transferred, and adverse effects of the transfer process on the patient are avoided.

As shown in fig. 4, when a patient A needs to be transferred from the movable bed 2 of the present invention to a hospital bed or an operating table B, the transmission gear 5 is separated from the gear 4 by the electric push rod 12, the movable bed 2 is driven by the power mechanism 3 to move out of the side surface of the bed frame 1 and lean against the hospital bed or the operating table B, so that the patient A is positioned above the hospital bed or the operating table B, then the electric push rod 12 is reset, the transmission gear 5 is always engaged with the gear 4, then the movable bed 2 is driven by the power mechanism 3 to move back to the bed frame 1 from the hospital bed or the operating table B, in the process, the transmission gear 5 is moved to the gear 4 to be always engaged with the gear 4, so that in the process of moving the movable bed 2 back, the rack 6 drives the gear 4 to rotate, the gear 4 drives the transmission gear 5 to rotate, the transmission gear 5 drives the transmission belt 2B2 to move towards the hospital, the patient A and the sickbed or the operating table B can not move relatively due to the reset of the movable bed 2, so that the patient A can not move back along with the movable bed 2, and the patient A can be transferred to the sickbed or the operating table B along with the transfer of the movable bed 2 from the sickbed or the operating table B to the medical patient transfer bed.

Since the structure is clearly shown, the rollers 2B1 and the lower roller 2B5 are enlarged in the drawings, and in fact, the diameters of the rollers 2B1 and the lower roller 2B5 are small, so that the movable bed 2 has a small thickness and can be conveniently inserted between the patient a and the hospital bed or the operating table B.