A dual-motor drive module

Abstract

This utility model relates to the field of motor technology, and more particularly to a dual-motor transmission module, comprising a cavity, a first pusher and a second pusher movably disposed within the cavity, a first transmission assembly drivenly connected to the first pusher, a first motor drivenly connected to the first transmission assembly, a second transmission assembly drivenly connected to the second pusher, and a second motor drivenly connected to the second transmission assembly. The first motor drives the first pusher to move along the length direction of the cavity via the first transmission assembly, and the second motor drives the second pusher to move along the length direction of the cavity via the second transmission assembly. Receiving grooves are provided at both ends of the cavity, and protective covers are provided on the outer sides of the receiving grooves. This utility model has a compact and reasonable structure, employing two independently operating motors to achieve individual control of the lifting and lowering positions of the head and feet, resulting in high adjustment accuracy, extended service life, and improved performance.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a dual-motor drive module. Background Technology

[0002] Medical beds are widely used in hospitals, nursing homes, and home care centers for diagnosis, treatment, post-operative care, and rehabilitation. Having undergone numerous improvements and upgrades, medical beds have evolved from the initial mechanical beds to today's electric and intelligent beds, offering more diverse and user-friendly functions. Medical beds are typically equipped with adjustable headboards, footboards, and side rails to accommodate different patient needs. For example, the height of the headboard and footboard can be adjusted to help patients assume semi-recumbent or prone positions, facilitating operation by medical staff. The motors on both sides of the medical bed operate via drive shafts. However, after prolonged use, the transmission between these motors inevitably introduces operational errors, such as variations in speed and start / stop times. This can hinder precise adjustment of the headboard and footboard positions, leading to twisting or even accidental breakage of the drive shafts, reducing their lifespan and affecting performance. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by providing a dual-motor drive module with a compact and reasonable structure. It uses two independently operating motors to achieve individual control of the lifting and lowering position adjustment of the head and feet, resulting in high adjustment accuracy, extended service life, and improved performance.

[0004] To achieve the above objectives, this utility model provides a dual-motor drive module, comprising a cavity, a first pusher and a second pusher movably disposed in the cavity, a first transmission assembly drivenly connected to the first pusher, a first motor drivenly connected to the first transmission assembly, a second transmission assembly drivenly connected to the second pusher, and a second motor drivenly connected to the second transmission assembly. The first motor drives the first pusher to move along the length direction of the cavity through the first transmission assembly, and the second motor drives the second pusher to move along the length direction of the cavity through the second transmission assembly. Both ends of the cavity are provided with receiving grooves, and protective covers are provided on the outer side of the receiving grooves.

[0005] Preferably, the first transmission assembly includes a first worm gear, a first screw connected to the first worm gear, and a first bearing sleeved on the outside of the first screw. The output end of the first motor is driven and connected to the first worm, the first worm meshes with the first worm gear, and the first pusher is provided with a first internal thread that is threadedly connected to the first screw.

[0006] Preferably, the cavity is provided with a first limit switch and a second limit switch, the first limit switch and the second limit switch are spaced apart and located above the first pusher, and the first pusher is provided with a first pressing head at the end near the first bearing.

[0007] Preferably, the second transmission assembly includes a second worm gear, a second screw connected to the second worm gear, and a second bearing sleeved on the outside of the second screw. The output end of the second motor is driven and connected to the second worm, the second worm meshes with the second worm gear, and the second pusher is provided with a second internal thread that is threadedly connected to the second screw.

[0008] Preferably, the cavity is provided with a third limit switch and a fourth limit switch, which are spaced apart and located above the second pusher. The second pusher is provided with a second pressing head at one end near the second bearing.

[0009] Preferably, a head identifier and a foot identifier are respectively provided on both sides of the cavity.

[0010] Preferably, the outer side of the protective cover is provided with a T-shaped insert, and the cavity is provided with a T-shaped slot that connects to the T-shaped insert.

[0011] The advantages of this utility model are: compact structure and reasonable design, using two independently operating motors to achieve individual control of the lifting and lowering position adjustment of the head and feet, high adjustment accuracy, extended service life, and improved performance. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is an exploded structural diagram of the present invention.

[0014] Figure 3 This is a schematic diagram of the second pushing component of this utility model.

[0015] The reference numerals in the figures include:

[0016] 1—First pushing component; 11—First internal thread; 12—First pressing head

[0017] 2—Second pusher; 21—Second internal thread; 22—Second pressing head

[0018] 3—Cavity 31—Receiving Slot 32—First Limit Switch

[0019] 33 – Second limit switch; 34 – Third limit switch; 35 – Fourth limit switch

[0020] 36 – Head identifier; 37 – Foot identifier; 38 – T-slot

[0021] 4—First transmission assembly; 41—First worm gear; 42—First screw

[0022] 43—First Bearing

[0023] 5—First motor; 51—First worm gear

[0024] 6—Second transmission assembly; 61—Second worm gear; 62—Second screw

[0025] 63—Second Bearing

[0026] 7—Second motor; 71—Second worm gear

[0027] 8—Protective cover; 81—T-shaped insert. Detailed Implementation

[0028] The present invention will now be described in detail with reference to the accompanying drawings.

[0029] like Figures 1 to 3 As shown, a dual-motor transmission module of this utility model includes a cavity 3, a first pusher 1 and a second pusher 2 movably disposed in the cavity 3, a first transmission assembly 4 connected to the first pusher 1, a first motor 5 driven by the first transmission assembly 4, a second transmission assembly 6 connected to the second pusher 2, and a second motor 7 driven by the second transmission assembly 6. The first motor 5 drives the first pusher 1 to move along the length direction of the cavity 3 through the first transmission assembly 4, and the second motor 7 drives the second pusher 2 to move along the length direction of the cavity 3 through the second transmission assembly 6. Both ends of the cavity 3 are provided with receiving grooves 31, and protective covers 8 are provided on the outer side of the receiving grooves 31.

[0030] In use, the first motor 5 drives the first pusher 1 to move left and right along the cavity 3 through the first transmission assembly 4, and the second motor 7 drives the second pusher 2 to move left and right along the cavity 3 through the second transmission assembly 6. Since both ends of the cavity 3 are provided with receiving grooves 31, the headboard assembly and the footboard assembly from the outside can pass through the receiving grooves 31 and protrude into the cavity 3, so that the headboard assembly works with the first pusher 1 and the footboard assembly works with the second pusher 2. When the first pusher 1 slides in one direction, it lifts the headboard assembly, causing the headboard assembly to rise; when the first pusher 1 slides back to its original position, it no longer lifts the headboard assembly, causing the headboard assembly to fall flat. Similarly, when the second pushing member 2 slides in one direction, it lifts the footboard assembly, raising it; when the second pushing member 2 slides back to its original position, it no longer lifts the footboard assembly, allowing it to lower and lie flat. A protective cover 8 is provided on the outside of the receiving groove 31, effectively preventing external dust and foreign objects from entering the cavity 3 and affecting the normal operation of the working parts. The first motor 5 and the second motor 7 operate independently and efficiently, avoiding interference between them. This utility model has a compact structure and reasonable design, employing two independently operating motors to achieve independent control of the head and footrest lifting positions, resulting in high adjustment accuracy, extended service life, and improved performance.

[0031] The first transmission assembly 4 in this embodiment includes a first worm gear 41, a first screw 42 connected to the first worm gear 41, and a first bearing 43 sleeved on the outside of the first screw 42. The output end of the first motor 5 is driven and connected to the first worm 51, which meshes with the first worm gear 41. The first pusher 1 is provided with a first internal thread 11 that is threadedly connected to the first screw 42. Specifically, the first motor 5 drives the first worm 51 to rotate. Since the first worm 51 meshes with the first worm gear 41, the first worm 51 drives the first worm gear 41 to rotate. The rotating first worm gear 41 further drives the first screw 42 to rotate. The first pusher 1 is threadedly connected to the first screw 42 through the first internal thread 11. The first pusher 1 converts the rotational motion into linear motion, forming a helical transmission structure that needs to transmit motion or power, thereby realizing the movement of the first pusher 1 along the length direction of the cavity 3.

[0032] In this embodiment, the cavity 3 is equipped with a first limit switch 32 and a second limit switch 33. The first limit switch 32 and the second limit switch 33 are spaced apart and located above the first pusher 1. The first pusher 1 has a first pressing head 12 at one end near the first bearing 43. Specifically, the first pusher 1 presses against and down the normally closed contact of the first limit switch 32 through the first pressing head 12, and the first limit switch 32 immediately opens, causing the first motor 5 to stop operating. Similarly, the first pusher 1 presses against and down the normally closed contact of the second limit switch 33 through the first pressing head 12, and the second limit switch 33 immediately opens, causing the first motor 5 to stop operating. Thus, the first limit switch 32 and the second limit switch 33 effectively limit the range of movement of the first pusher 1 within the cavity 3, preventing structural damage caused by the first pusher 1 exceeding its normal operating range due to excessive movement.

[0033] The second transmission assembly 6 in this embodiment includes a second worm gear 61, a second screw 62 connected to the second worm gear 61, and a second bearing 63 sleeved on the outside of the second screw 62. The output end of the second motor 7 is driven and connected to the second worm 71, which meshes with the second worm gear 61. The second pusher 2 is provided with a second internal thread 21 that is threadedly connected to the second screw 62. Specifically, the second motor 7 drives the second worm 71 to rotate. Since the second worm 71 meshes with the second worm gear 61, the second worm gear 61 is driven to rotate by the second worm gear 71. The rotating second worm gear 61 further drives the second screw 62 to rotate. The second pusher 2 is threadedly connected to the second screw 62 through the second internal thread 21. The second pusher 2 converts the rotational motion into linear motion, forming a helical transmission structure that needs to transmit motion or power, thereby enabling the second pusher 2 to move along the length direction of the cavity 3.

[0034] In this embodiment, the cavity 3 is equipped with a third limit switch 34 and a fourth limit switch 35. The third limit switch 34 and the fourth limit switch 35 are spaced apart and located above the second pusher 2. The second pusher 2 has a second pressing head 22 at one end near the second bearing 63. Specifically, the second pusher 2 presses down on the normally closed contact of the third limit switch 34 through the second pressing head 22, and the third limit switch 34 immediately opens, causing the second motor 7 to stop operating. Similarly, the second pusher 2 presses down on the normally closed contact of the fourth limit switch 35 through the second pressing head 22, and the fourth limit switch 35 immediately opens, causing the second motor 7 to stop operating. Thus, the third limit switch 34 and the fourth limit switch 35 effectively limit the movement range of the second pusher 2 within the cavity 3, preventing structural damage caused by the second pusher 2 exceeding its normal operating range due to excessive movement.

[0035] In this embodiment, a head identifier 36 and a foot identifier 37 are respectively provided on both sides of the cavity 3. Specifically, the head identifier 36 and the foot identifier 37 are respectively set on both sides of the cavity 3 by an external hot stamping device, which makes it convenient for users to accurately identify and distinguish them, and makes the use convenient and efficient.

[0036] In this embodiment, a T-shaped insert 81 is provided on the outer side of the protective cover 8, and a T-shaped slot 38 is provided in the cavity 3 to connect with the T-shaped insert 81. Specifically, the T-shaped insert 81 and the protective cover 8 are integrally formed, which facilitates production and processing and saves manufacturing costs. The protective cover 8 is connected to the cavity 3 through the T-shaped insert 81 and the T-shaped slot 38, realizing convenient assembly of the protective cover 8 and the cavity 3, and making installation and disassembly simple.

[0037] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A dual-motor drive module, characterized in that: The device includes a cavity, a first pusher and a second pusher movably disposed in the cavity, a first transmission assembly driven by the first pusher, a first motor driven by the first transmission assembly, a second transmission assembly driven by the second pusher, and a second motor driven by the second transmission assembly. The first motor drives the first pusher to move along the length of the cavity through the first transmission assembly, and the second motor drives the second pusher to move along the length of the cavity through the second transmission assembly. Both ends of the cavity are provided with receiving grooves, and protective covers are provided on the outer side of the receiving grooves.

2. The dual-motor drive module according to claim 1, characterized in that: The first transmission assembly includes a first worm gear, a first screw connected to the first worm gear, and a first bearing sleeved on the outside of the first screw. The output end of the first motor is driven by the first worm gear, which meshes with the first worm gear. The first pusher is provided with a first internal thread that is threadedly connected to the first screw.

3. A dual-motor drive module according to claim 2, characterized in that: The cavity is provided with a first limit switch and a second limit switch, which are spaced apart and located above the first pusher. The first pusher is provided with a first pressing head at one end near the first bearing.

4. The dual-motor drive module according to claim 1, characterized in that: The second transmission assembly includes a second worm gear, a second screw connected to the second worm gear, and a second bearing sleeved on the outside of the second screw. The output end of the second motor is driven by the second worm gear, which meshes with the second worm gear. The second pusher is provided with a second internal thread that is threadedly connected to the second screw.

5. A dual-motor drive module according to claim 4, characterized in that: The cavity is provided with a third limit switch and a fourth limit switch, which are spaced apart and located above the second pusher. The second pusher is provided with a second pressure head at one end near the second bearing.

6. A dual-motor drive module according to claim 1, characterized in that: The cavity has a head identifier and a foot identifier on its two sides, respectively.

7. A dual-motor drive module according to claim 1, characterized in that: The protective cover has a T-shaped insert on its outer side, and the cavity has a T-shaped slot that connects to the T-shaped insert.

Images