Nursing Bed

Abstract

The present application provides a nursing bed, which includes an integrated driving device for dual-motor lifting, the driving device includes a dual-drive motor and a lifting motor, and the lifting motor is fixed on the dual-drive motor; the lifting motor includes a motor housing, a first motor body, a first gear and worm gear transmission mechanism, a first transmission shaft, a second transmission shaft, a second motor body, a second gear and worm gear transmission mechanism and a third transmission shaft; the first motor body is connected to the first transmission shaft through a first gear and worm gear transmission mechanism, and the first transmission shaft is connected to the second transmission shaft through a gear mechanism, so that the second transmission shaft rotates in opposite directions to the first transmission shaft; the first motor body is used to drive the first transmission shaft and the second transmission shaft to rotate, and the second motor body is used to drive the third transmission shaft to rotate, thereby respectively driving the head connecting rod and the foot connecting rod to rotate, thereby driving the head and foot of the bed to be relatively independently lifted and lowered, and the transmission relationship is simple and reliable.

Description

Technical Field

[0001] The present application relates to the technical field of nursing beds, and in particular to a nursing bed having a motor assembly for driving the nursing bed to rise and fall. Background Art

[0002] Nursing beds generally include two functions: lifting and deformation. The lifting motor drives the head and foot of the bed to rise and fall, and the dual motor drive motor drives the bed board to deform.

[0003] There are two main ways to place the motors on the market to achieve simultaneous lifting of the head and foot of the bed:

[0004] The first type is to place the lifting motor on the bed to achieve the simultaneous lifting function of the head and foot of the bed;

[0005] The second type is to place a lifting motor at the head and foot of the bed to achieve the simultaneous lifting function of the head and foot of the bed.

[0006] In the above two methods, the lifting motor and the dual-drive motor are independent. On the one hand, it is difficult to transport, not conducive to packaging, and easy to be damaged during transportation; on the other hand, the installation operation is complicated.

[0007] In addition, the head and foot of the existing nursing bed can be raised and lowered at the same time, so the height can be adjusted, but it is not easy to adjust the shape of the nursing bed. Summary of the invention

[0008] In view of this, the present application provides a nursing bed that solves the shortcomings of the current bed drive mechanism that is difficult to transport and has complex installation operations.

[0009] In the first aspect, the present application provides an integrated driving device for dual-motor lifting, comprising a dual-drive motor and a lifting motor, wherein the lifting motor is fixed on the dual-drive motor; the lifting motor comprises a motor housing, a first motor body, a first gear and worm gear transmission mechanism, a first transmission shaft, a second transmission shaft, a second motor body, a second gear and worm gear transmission mechanism and a third transmission shaft; the first motor body and the second motor body are fixed in the motor housing, the first motor body is connected to the first transmission shaft through the first gear and worm gear transmission mechanism, the first transmission shaft is connected to the second transmission shaft through a gear mechanism, so that the second transmission shaft rotates in opposite directions to the first transmission shaft; the second motor body is connected to the third transmission shaft through the second gear and worm gear transmission mechanism; the first transmission shaft and the second transmission shaft are used to connect to the head of the bed connecting rod, and the third transmission shaft is used to connect to the foot of the bed connecting rod.

[0010] In the above technical solution, further, the first gear worm gear transmission mechanism includes a first worm, a first worm wheel, a first spur gear and a second spur gear; the first motor body is drivingly connected to the first worm, the first worm is adaptively connected to the first worm wheel, and the first worm wheel is fixed in the motor housing with a bearing; the first transmission shaft is connected to the first worm wheel, the first spur gear is installed on the first transmission shaft, the second spur gear is installed on the second transmission shaft, and the first spur gear is meshed with the second spur gear.

[0011] In the above technical solution, further, the second gear worm gear transmission mechanism includes a second worm and a second worm wheel; the second motor body is drivingly connected to the second worm, the second worm is adaptively connected to the second worm wheel, and the second worm wheel is fixed in the motor housing by a bearing; the third transmission shaft is connected to the second worm wheel.

[0012] In the above technical solution, further, the first gear worm gear transmission mechanism also includes a first bearing, a second bearing, a third bearing and a fourth bearing; the first bearing and the second bearing are installed on the first transmission shaft, and the first bearing is located on the outside of the first worm gear, and the second bearing is located on the outside of the first spur gear; the third bearing and the fourth bearing are fixed on the second transmission shaft, and are respectively located on both sides of the second spur gear.

[0013] In the above technical solution, further, the second gear worm gear transmission mechanism also includes a fifth bearing and a sixth bearing, and the fifth bearing and the sixth bearing are fixed on the third transmission shaft and are respectively located on both sides of the second worm gear.

[0014] In the above technical solution, further, the ends of the first transmission shaft, the second transmission shaft and the third transmission shaft are connected with pins, and the ends of the head connecting rod and the foot connecting rod are provided with fixing grooves adapted to the pins.

[0015] In the above technical solution, further, a handle is provided at each end of the top surface of the dual drive motor.

[0016] In the above technical solution, further, a sealing ring is provided in the opening structure.

[0017] In the above technical solution, further, the motor housing includes a main housing, an upper cover and a plurality of first connecting bolts, and the main housing and the upper cover are fixedly connected by the first connecting bolts; the first motor body and the second motor body are installed inside the main housing, and a plurality of worm gear mounting cavities are provided on the top of the main housing, and the first gear worm gear transmission mechanism and the second gear worm gear transmission mechanism are fixed in the worm gear mounting cavity; opening structures are respectively provided on both sides of the main housing, and the first transmission shaft and the second transmission shaft are located in the opening structure on one side, and the third transmission shaft is located in the opening structure on the other side.

[0018] In the above technical solution, further, a plurality of fixing ears are provided at the bottom of the motor housing, and the fixing ears are fixed to the dual-drive motor by a plurality of first connecting bolts, and the lifting motor and the dual-drive motor are arranged in a T shape.

[0019] On the other hand, the present application further provides a nursing bed, comprising a bed frame, a deformable bed board, a deformation transmission mechanism, a bed head lifting transmission mechanism, a bed foot lifting transmission mechanism and the above-mentioned dual-motor lifting integrated driving device; the dual driving motor is connected to the deformable bed board through the deformation transmission mechanism to drive the bed board to deform; one end of the first transmission shaft or the second transmission shaft is connected to the bed head connecting rod, and the bed head connecting rod is connected to the bed head lifting transmission mechanism to drive the bed head to lift; one end of the third transmission shaft is connected to the bed foot connecting rod, and the bed foot connecting rod is connected to the bed foot lifting transmission mechanism to drive the bed foot to lift;

[0020] The bedside lifting transmission mechanism includes a sleeve located at the bedside, an inner tube installed in the sleeve, and a connecting block fixed in the inner tube, and also includes a gear seat, a transmission screw, a transmission nut, a lifting platform, a traction rope and a plurality of guide wheels. The gear seat is installed at the bedside, the bedside connecting rod is connected to the gear seat, the gear seat is connected to the transmission screw, the transmission nut is adaptively connected to the transmission screw, and the transmission nut is fixed on the lifting platform; one end of the traction rope is fixedly connected to the lifting platform, and the other end is fixedly connected to the connecting block after passing through a plurality of guide wheels.

[0021] Compared with the prior art, the integrated driving device for dual-motor lifting provided in the present application fixes the lifting motor on the dual-drive motor, so that the lifting horse fixation and the dual-drive motor are integrated: on the one hand, the integrated structure is conducive to packaging and transportation, and can reduce the probability of damage to the motor during transportation; on the other hand, the integrated structure simplifies the installation operation, and the user only needs to install it once, which provides a better experience; the integrated structure can be fixed near the middle of the nursing bed, and the first motor body is used to drive the first transmission shaft and the second transmission shaft to rotate, and the second motor body is used to drive the third transmission shaft to rotate, thereby respectively driving the head of the bed connecting rod and the foot of the bed connecting rod to rotate, thereby driving the head of the bed and the foot of the bed to be relatively independently lifted and lowered, and the transmission relationship is simple and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the three-dimensional structure of an integrated driving device for dual-motor lifting provided in one embodiment of the present application.

[0023] Figure 2 An exploded diagram of a lifting motor provided by an embodiment of the present application.

[0024] Figure 3 A schematic structural diagram of a first gear worm gear transmission mechanism and a second gear worm gear transmission mechanism is provided in an embodiment of the present application.

[0025] Figure 4 A schematic diagram of the connection between an integrated dual-motor lifting drive device and a bed head connecting rod and a bed position connecting rod provided in one embodiment of the present application.

[0026] Figure 5 A schematic diagram of the structure of a nursing bed provided by an embodiment of the present application when the head and foot of the bed are lowered simultaneously.

[0027] Figure 6 A schematic diagram of the structure of a nursing bed provided by an embodiment of the present application when the head and foot of the bed are raised simultaneously.

[0028] Figure 7 A structural schematic diagram of a nursing bed provided in an embodiment of the present application when the head of the bed rises and the foot of the bed descends.

[0029] Figure 8 A structural schematic diagram of a bedside lifting transmission mechanism provided in one embodiment of the present application.

[0030] Reference numerals:

[0031] 1-integrated driving device for dual motor lifting; 2-bed frame; 3-deformable bed board; 4-deformation transmission mechanism; 5-bed head lifting transmission mechanism; 6-bed head connecting rod; 7-bed foot connecting rod; 51-sleeve; 52-inner tube; 53-connecting block; 54-gear seat; 55-drive screw; 56-drive nut; 57-lifting platform; 58-traction rope; 59-guide wheel; 11-dual drive motor; 12-lifting motor; 13-handle; 121-motor housing; 122-first motor body; 123-first gear worm gear transmission mechanism; 124-first transmission shaft; 125-second transmission shaft ;126-second motor body;127-second gear worm gear transmission mechanism;128-third transmission shaft;129-pin;1211-main housing;1212-upper cover;1213-first connecting bolt;1214-fixing ear;1231-first worm;1232-first worm wheel;1233-first spur gear;1234-second spur gear;1235-first bearing;1236-second bearing;1237-third bearing;1238-fourth bearing;1261-second worm;1262-second worm wheel;1263-fifth bearing;1264-sixth bearing. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0033] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0034] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] Figure 1 A schematic diagram of the three-dimensional structure of an integrated driving device for dual-motor lifting provided in one embodiment of the present application.

[0036] like Figure 1 As shown, the integrated dual-motor lifting drive device provided in the present application includes a dual-drive motor 11 and a lifting motor 12. The lifting motor 12 is fixed on the dual-drive motor 11, and the lifting motor 12 and the dual-drive motor 11 are arranged in a T shape.

[0037] Furthermore, a handle 13 is provided at each end of the top surface of the dual driving motor 11. After the handle 13 is provided, the transportation and installation of the driving device are more convenient.

[0038] Figure 2 An exploded diagram of a lifting motor provided by an embodiment of the present application; Figure 3 A schematic structural diagram of a first gear worm gear transmission mechanism and a second gear worm gear transmission mechanism is provided in an embodiment of the present application.

[0039] like Figure 2 and Figure 3 As shown, the lifting motor 12 includes a motor housing 121, a first motor body 122, a first gear and worm gear transmission mechanism 123, a first transmission shaft 124, a second transmission shaft 125, a second motor body 126, a second gear and worm gear transmission mechanism 127 and a third transmission shaft 128; the first motor body 122 and the second motor body 126 are fixed in the motor housing 121.

[0040] Specifically, the motor housing 121 includes a main housing 1211, an upper cover 1212 and a plurality of first connecting bolts 1213, and the main housing 1211 and the upper cover 1212 are fixedly connected by the first connecting bolts 1213; the first motor body 122 and the second motor body 126 are installed inside the main housing 1211, and a plurality of worm gear mounting cavities are provided on the top of the main housing 1211, and the first gear worm gear transmission mechanism 123 and the second gear worm gear transmission mechanism 127 are fixed in the worm gear mounting cavity; opening structures are respectively provided on both sides of the main housing 1211, and the first transmission shaft 124 and the second transmission shaft 125 are located in the opening structure on one side, and the third transmission shaft 128 is located in the opening structure on the other side.

[0041] The first motor body 122 is connected to the first transmission shaft 124 through the first gear worm gear transmission mechanism 123, and the first transmission shaft 124 is connected to the second transmission shaft 125 through the gear mechanism, so that the second transmission shaft 125 and the first transmission shaft 124 rotate in opposite directions; the second motor body 126 is connected to the third transmission shaft 128 through the second gear worm gear transmission mechanism 127; the first transmission shaft 124 and the second transmission shaft 125 are used to connect to the head of the bed connecting rod 6, and the third transmission shaft 128 is used to connect to the foot of the bed connecting rod 7.

[0042] Specifically, the ends of the first transmission shaft 124, the second transmission shaft 125, and the third transmission shaft 128 are connected with pins 129, and the ends of the headstock connecting rod 6 and the footstock connecting rod 7 are provided with fixing grooves adapted to the pins 129. The pins 129 cooperate with the fixing grooves so that the transmission shaft can drive the headstock connecting rod 6 and the footstock connecting rod 7 to rotate.

[0043] The integrated structure can be fixed near the middle of the nursing bed, and the first motor body 122 and the second motor body 126 are used to drive the transmission shaft to rotate, thereby driving the head connecting rod 6 and the foot connecting rod 7 to rotate, so that the head and foot of the bed can be raised and lowered, and the transmission relationship is simple and reliable.

[0044] It should be noted that the above-mentioned headrest connecting rod 6 and bed position connecting rod are relative concepts, which does not necessarily mean that the headrest connecting rod 6 connects the head of the bed and the bed position connecting rod connects the foot of the bed; it can also be that the headrest connecting rod 6 connects the foot of the bed and the foot of the bed connecting rod 7 connects the head of the bed.

[0045] Specifically, the first gear worm gear transmission mechanism 123 includes a first worm 1231, a first worm wheel 1232, a first spur gear 1233 and a second spur gear 1234; the first motor body 122 is drivingly connected to the first worm 1231, the first worm 1231 is adaptively connected to the first worm wheel 1232, and the first worm wheel 1232 is fixed in the motor housing 121 by a bearing; the first transmission shaft 124 is connected to the first worm wheel 1232, the first spur gear 1233 is installed on the first transmission shaft 124, the second spur gear 1234 is installed on the second transmission shaft 125, and the first spur gear 1233 is meshed with the second spur gear 1234.

[0046] The first gear worm gear transmission mechanism 123 also includes a first bearing 1235, a second bearing 1236, a third bearing 1237 and a fourth bearing 1238; the first bearing 1235 and the second bearing 1236 are installed on the first transmission shaft 124, and the first bearing 1235 is located on the outside of the first worm gear 1232, and the second bearing 1236 is located on the outside of the first spur gear 1233; the third bearing 1237 and the fourth bearing 1238 are fixed on the second transmission shaft 125, and are respectively located on both sides of the second spur gear 1234.

[0047] Specifically, the second gear worm gear transmission mechanism 127 includes a second worm 1261 and a second worm wheel 1262; the second motor body 126 is drivingly connected to the second worm 1261, the second worm 1261 is adaptively connected to the second worm wheel 1262, and the second worm wheel 1262 is fixed in the motor housing 121 by bearings; the third transmission shaft 128 is connected to the second worm wheel 1262.

[0048] The second worm gear transmission mechanism 127 further includes a fifth bearing 1263 and a sixth bearing 1264 . The fifth bearing 1263 and the sixth bearing 1264 are fixed on the third transmission shaft 128 and are respectively located on both sides of the second worm gear 1262 .

[0049] The integrated driving device for dual-motor lifting provided in the present application has a first motor body 122 that can simultaneously drive the first transmission shaft 124 and the second transmission shaft 125 to rotate, and a second motor body 126 drives the third transmission shaft 128 to rotate.

[0050] Figure 4 A schematic diagram of the connection between an integrated dual-motor lifting drive device and a bedside connecting rod 6 and a bed connecting rod provided in an embodiment of the present application.

[0051] like Figure 4 As shown, the bedside connecting rod 6 can be selectively connected to the first transmission shaft 124 and the second transmission shaft 125. The dotted line indicates the position change of the connecting rod, so that the bedside and the bed can not only rise and fall at the same time, but also the bedside can rise and fall, or the bedside can rise and fall.

[0052] Figure 5 A structural schematic diagram of a nursing bed provided by an embodiment of the present application when the head and foot of the bed are lowered simultaneously; Figure 6 A structural schematic diagram of a nursing bed provided by an embodiment of the present application when the head and foot of the bed are raised simultaneously; Figure 7 A structural schematic diagram of a nursing bed provided in an embodiment of the present application when the head of the bed rises and the foot of the bed descends.

[0053] like Figure 5 -and Figure 7As shown, the present application also provides a nursing bed, including a bed frame 2, a deformable bed board 3, a deformable transmission mechanism 4, a headboard lifting transmission mechanism 5, a footboard lifting transmission mechanism and the above-mentioned dual-motor lifting integrated drive device 1; the dual-motor lifting integrated drive device 1 is installed near the middle of the bed frame 2, and the dual drive motor 11 is connected to the deformable bed board 3 through the deformable transmission mechanism 4 to drive the bed board to deform; one end of the first transmission shaft 124 or the second transmission shaft 125 is connected to the headboard connecting rod 6, and the headboard connecting rod 6 is connected to the headboard lifting transmission mechanism 5 to drive the headboard to rise and fall; one end of the third transmission shaft 128 is connected to the footboard connecting rod 7, and the footboard connecting rod 7 is connected to the footboard lifting transmission mechanism to drive the footboard to rise and fall.

[0054] In some embodiments, when the first motor body 122 and the second motor body 126 rotate forward, the bedside connecting rod 6 is connected to the first transmission shaft 124. At this time, the bedside and the bed position of the nursing bed are lowered at the same time. Figure 5 As shown;

[0055] In some embodiments, when the first motor body 122 and the second motor body 126 are reversed, the bedside connecting rod 6 is connected to the first transmission shaft 124. At this time, the bedside and the bed position of the nursing bed rise at the same time. Figure 6 As shown;

[0056] In some embodiments, when the first motor body 122 and the second motor body 126 rotate forward, the bedside connecting rod 6 is connected to the second transmission shaft 125. At this time, the head of the nursing bed rises and the bed position drops. Figure 7 shown.

[0057] The dual drive motor 11 is connected to the deformable bed board 3 through the deformation transmission mechanism 4 to drive the bed board to deform, including arching, flattening and other states. Since this technology is conventional and widely used in this field, it will not be repeated here. The following focuses on the lifting principle.

[0058] Figure 8 A structural schematic diagram of a bedside lifting transmission mechanism provided in one embodiment of the present application.

[0059] like Figure 8As shown, the bedside lifting transmission mechanism 5 includes a sleeve 51 located at the bedside, an inner tube 52 installed in the sleeve 51 and a connecting block 53 fixed in the inner tube 52, and also includes a gear seat 54, a transmission screw 55, a transmission nut 56, a lifting platform 57, a traction rope 58 and a plurality of guide wheels 59. The gear seat 54 is installed at the bedside, the bedside connecting rod 6 is connected to the gear seat 54, the gear seat 54 is connected to the transmission screw 55, the transmission nut 56 is adapted to be connected to the transmission screw 55, and the transmission nut 56 is fixed on the lifting platform 57; one end of the traction rope 58 is fixedly connected to the lifting platform 57, and the other end is fixedly connected to the connecting block 53 after passing through a plurality of guide wheels 59.

[0060] The bed foot lifting transmission mechanism and the bed head lifting transmission mechanism 5 have the same structure and the same working principle, which will not be described in detail here.

[0061] The lifting working principle of the nursing bed is as follows:

[0062] The first motor body 122 drives the first transmission shaft 124 to rotate in the first direction, thereby driving the headboard connecting rod 6 to rotate. The headboard connecting rod 6 drives the transmission screw 55 to rotate around its own axis through the gear seat 54. The transmission nut 56 moves in the vertical direction as the transmission screw 55 rotates. At the same time, the lifting platform 57 moves with the transmission nut 56, pulling the traction rope 58. Under the action of the traction rope 58, the inner tube 52 extends out of the sleeve 51 to achieve a telescopic action.

[0063] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0064] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagram. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, referring to "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to", and can be used interchangeably with them.

[0065] It should also be noted that in the apparatus, device and method of the present application, each component or each step can be decomposed and / or recombined. Such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

[0066] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features of the present invention.

[0067] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A nursing bed, characterized in that: It includes a bed frame, a deformable bed board, a deformation transmission mechanism, a bed head lifting transmission mechanism, a bed foot lifting transmission mechanism and an integrated driving device for dual motor lifting; The integrated driving device for dual-motor lifting includes a dual-drive motor and a lifting motor, and the lifting motor is fixed on the dual-drive motor; the lifting motor includes a motor housing, a first motor body, a first gear and worm gear transmission mechanism, a first transmission shaft, a second transmission shaft, a second motor body, a second gear and worm gear transmission mechanism and a third transmission shaft; the first motor body and the second motor body are fixed in the motor housing, the first motor body is connected to the first transmission shaft through the first gear and worm gear transmission mechanism, the first transmission shaft is connected to the second transmission shaft through a gear mechanism, so that the second transmission shaft rotates in opposite directions to the first transmission shaft; the second motor body is connected to the third transmission shaft through the second gear and worm gear transmission mechanism; the first transmission shaft and the second transmission shaft are used to be connected to the bedside connecting rod, and the third transmission shaft is used to be connected to the bedside connecting rod. The moving shaft is used to connect with the connecting rod at the end of the bed; the first gear worm gear transmission mechanism includes a first worm, a first worm wheel, a first spur gear and a second spur gear; the first motor body is drivingly connected with the first worm, the first worm is adaptively connected with the first worm wheel, and the first worm wheel is fixed in the motor housing by a bearing; the first transmission shaft is connected with the first worm wheel, the first spur gear is mounted on the first transmission shaft, the second spur gear is mounted on the second transmission shaft, and the first spur gear is meshed with the second spur gear; the second gear worm gear transmission mechanism includes a second worm and a second worm wheel; the second motor body is drivingly connected with the second worm, the second worm is adaptively connected with the second worm wheel, and the second worm wheel is fixed in the motor housing by a bearing; the third transmission shaft is connected with the second worm wheel; The dual drive motor is connected to the deformable bed board through the deformation transmission mechanism to drive the bed board to deform; one end of the first transmission shaft or the second transmission shaft is connected to the bed head connecting rod, and the bed head connecting rod is connected to the bed head lifting transmission mechanism to drive the bed head to lift; one end of the third transmission shaft is connected to the bed foot connecting rod, and the bed foot connecting rod is connected to the bed foot lifting transmission mechanism to drive the bed foot to lift; The bedside lifting transmission mechanism includes a sleeve located at the bedside, an inner tube installed in the sleeve, and a connecting block fixed in the inner tube, and also includes a gear seat, a transmission screw, a transmission nut, a lifting platform, a traction rope and a plurality of guide wheels. The gear seat is installed at the bedside, the bedside connecting rod is connected to the gear seat, the gear seat is connected to the transmission screw, the transmission nut is adaptively connected to the transmission screw, and the transmission nut is fixed on the lifting platform; one end of the traction rope is fixedly connected to the lifting platform, and the other end is fixedly connected to the connecting block after passing through a plurality of guide wheels.

2. The nursing bed according to claim 1, characterized in that: The first gear worm gear transmission mechanism also includes a first bearing, a second bearing, a third bearing and a fourth bearing; the first bearing and the second bearing are installed on the first transmission shaft, and the first bearing is located on the outside of the first worm gear, and the second bearing is located on the outside of the first spur gear; the third bearing and the fourth bearing are fixed on the second transmission shaft and are respectively located on both sides of the second spur gear.

3. The nursing bed according to claim 1, characterized in that: The second gear worm gear transmission mechanism also includes a fifth bearing and a sixth bearing, and the fifth bearing and the sixth bearing are fixed on the third transmission shaft and are respectively located on both sides of the second worm gear.

4. The nursing bed according to any one of claims 1, 2 or 3, characterized in that: The ends of the first transmission shaft, the second transmission shaft and the third transmission shaft are connected with pins, and the ends of the head connecting rod and the foot connecting rod are provided with fixing grooves adapted to the pins.

5. The nursing bed according to claim 1, characterized in that: Two ends of the top surface of the dual drive motor are respectively provided with a handle.

6. The nursing bed according to claim 1, characterized in that: The motor housing includes a main housing, an upper cover and a plurality of first connecting bolts, and the main housing and the upper cover are fixedly connected by the first connecting bolts; the first motor body and the second motor body are installed inside the main housing, and a plurality of worm gear mounting cavities are provided on the top of the main housing, and the first gear worm gear transmission mechanism and the second gear worm gear transmission mechanism are fixed in the worm gear mounting cavity; opening structures are respectively provided on both sides of the main housing, and the first transmission shaft and the second transmission shaft are located in the opening structure on one side, and the third transmission shaft is located in the opening structure on the other side.

7. The nursing bed according to claim 1, characterized in that: A plurality of fixing ears are arranged at the bottom of the motor housing, and the fixing ears are fixed to the dual-drive motor by means of a plurality of first connecting bolts. The lifting motor and the dual-drive motor are arranged in a T shape.

Images