A drive structure for use in welfare seats

Abstract

This application relates to a drive structure for a welfare seat, belonging to the field of welfare equipment technology. The drive structure includes: a translation mechanism, a rotation mechanism, a straight-line mechanism, two sets of lifting mechanisms, a sliding mounting mechanism, and a base plate. The translation mechanism is detachably connected to the base plate. The rotation mechanism is detachably connected to the translation mechanism and slidably connected to the base plate via the translation mechanism. The straight-line mechanism is detachably connected to the rotation mechanism and rotatably connected to the translation mechanism via the rotation mechanism. One end of each of the two sets of lifting mechanisms is installed on both sides of the straight-line mechanism, and the lifting mechanism is slidably connected to the rotation mechanism via the straight-line mechanism. The sliding mounting mechanism is installed at the other end of the two sets of lifting mechanisms and rotatably connected to the lifting mechanism. This application has the technical effect of improving rotational positioning accuracy and enhancing spatial adaptability.

Description

Technical Field

[0001] This application relates to the technical field of welfare equipment, and in particular to a drive structure for use in welfare seats. Background Technology

[0002] The drive structure of a welfare seat is the core component that enables the seat to move, rotate, and rise. Its performance directly determines the ease of use, safety, and comfort of the seat, and is a key technological support to help people with mobility impairments get on and off the vehicle and adjust their body position smoothly. In existing welfare seats, the drive structure often uses a single slide rail with a common lead screw or hydraulic rod for translation, while the steering drive often uses a rack and pinion mechanism with meshing gears. The rotation of the gears drives the rack and seat to rotate. However, these structures are prone to insufficient rotational accuracy due to tooth backlash, and the rack occupies a large space. Translation drive structures also suffer from poor motion coordination, low adjustment accuracy, and are prone to wobbling during load-bearing. Furthermore, the transmission components wear out relatively quickly. Regarding the aforementioned technologies, the applicant believes that there is a deficiency in the low precision of rotation angle control. Utility Model Content

[0003] To address the aforementioned technical problems, this application provides a drive structure for use in welfare seats.

[0004] This application provides a drive structure for use in welfare seats, employing the following technical solution: A drive structure for a welfare seat includes a translation mechanism, a rotation mechanism, a straight-line mechanism, two sets of lifting mechanisms, a sliding mounting mechanism, and a base plate. The translation mechanism is detachably connected to the base plate. The rotation mechanism is detachably connected to the translation mechanism and is slidably connected to the base plate via the translation mechanism. The straight-line mechanism is detachably connected to the rotation mechanism and is rotatably connected to the translation mechanism via the rotation mechanism. One end of each of the two sets of lifting mechanisms is installed on both sides of the straight-line mechanism, and the lifting mechanism is slidably connected to the rotation mechanism via the straight-line mechanism. The sliding mounting mechanism is installed at the other end of the two sets of lifting mechanisms and is rotatably connected to the lifting mechanism.

[0005] By adopting the above technical solution, through the coordinated work of the translation mechanism, rotation mechanism, straight-line mechanism and lifting mechanism, the welfare seat can achieve a variety of actions, such as forward and backward movement, rotation, and lifting. The seat can slide to a suitable position through the translation mechanism, then rotate to the direction of the car door through the rotation mechanism, and then lower to a suitable height using the lifting mechanism. The rotation mechanism can achieve precise angle control of the seat, eliminating the positioning deviation problem in the rotation process in traditional structures, ensuring that the seat can be accurately rotated to the direction of the car door or the required angle. The coordinated operation of each mechanism can achieve high-precision position control, ensuring that the seat can be accurately aligned with the car door or target position.

[0006] Preferably, the translation mechanism includes two sets of first sliding devices, a first ball screw, two sets of first bearing devices, a first servo motor, and a first sliding plate. The two sets of first sliding devices are respectively installed on both sides of the base plate. The first sliding device includes a first slide rail and a first slider. One end of the first slider is slidably connected to the first slide rail, and the first slide rail is detachably connected to the base plate. The first sliding plate is installed on the top of the first sliding device in the two sets of first sliding devices. The first sliding plate is detachably connected to the first slider. The two ends of the first ball screw are connected to the bottom of the first sliding plate between the two sets of first sliding devices through the two sets of first bearing devices. The base of the first servo motor is detachably connected to the first sliding plate at one end of the first ball screw. The working end of the first servo motor is connected to the first ball screw. The first servo motor provides power for the rotation of the first ball screw. The ball nut on the first ball screw is detachably connected to the base plate.

[0007] By adopting the above technical solution, two sets of first sliding devices are respectively installed on both sides of the base plate. Through the sliding cooperation of the first slider and the first slide rail, symmetrical and stable support and guidance are provided for the first sliding plate. The first ball screw is used as the core transmission component, and with the precise drive of the first servo motor, the precise control of the translation distance can be achieved, which meets the fine requirements of the welfare seat for the translation position. The first servo motor has the characteristics of fast response speed and stable output torque. It is directly connected to the first ball screw and can adjust the speed and direction in real time to ensure smooth acceleration and deceleration during translation and avoid impact.

[0008] Preferably, the rotating mechanism includes a servo electric cylinder, a second slide rail, a second slider, a connecting rod, a rotating plate, and a rotating support base. The second slide rail is detachably connected to one end of the first sliding plate, and one end of the second slider is slidably connected to the second slide rail. The servo electric cylinder is disposed on the first sliding plate at one end of the second slide rail, and the working end of the servo electric cylinder is fixedly connected to the second slider. One end of the connecting rod is rotatably connected to the other end of the second slider, and the other end of the connecting rod is rotatably connected to one end of the bottom of the rotating plate. One end of the rotating support base is detachably connected to the other end of the second slide plate, and the other end of the rotating support base is detachably connected to the other end of the bottom of the rotating plate. Inclined slide rails are provided on both sides of the rotating plate.

[0009] By adopting the above technical solution, the servo electric cylinder converts the rotational motion of the servo motor into linear motion, controlling the sliding distance and speed of the second slider on the second slide rail. Through the connection of the connecting rod and the rotating plate, the linear motion can be converted into the rotation angle control of the rotating plate, meeting the needs of different users for the seat rotation angle. The setting of the rotating support seat provides an additional support point for the rotating plate, enhancing the stability of the rotating plate during rotation. Together with the connecting rod, it forms a stable triangular support structure that can withstand a large load, ensuring that the seat will not shake or tilt during rotation. The inclined slide rails on both sides of the rotating plate are used to cooperate with the lifting mechanism. The servo electric cylinder, the second slide rail, and the second slider cooperate with the connecting rod in a linear layout, which saves more space than the curved structure of the arc rack and can adapt to the narrow installation environment under the seat. The detachable connection design makes it easy to adjust the installation position according to different vehicle models.

[0010] Preferably, the servo electric cylinder includes a second servo motor, a cylinder body, a telescopic sleeve, a second ball screw, and a first pulley assembly. The second servo motor is bolted to the cylinder body, and the working end of the second servo motor is connected to the second ball screw through the first pulley assembly. The second servo motor provides power for the rotation of the second ball screw. The second ball screw is installed inside the cylinder body. One end of the telescopic sleeve is fixedly connected to the moving part of the second ball screw inside the cylinder body, and the other end of the telescopic sleeve is fixedly connected to the second slider. The telescopic sleeve is slidably connected to the cylinder body.

[0011] By adopting the above technical solution, the second ball screw converts the rotational motion of the second servo motor into the linear motion of the telescopic sleeve, ensuring the control of the telescopic distance, and thus precisely adjusting the rotation angle of the rotating mechanism to meet the rotation position requirements of the welfare seat.

[0012] Preferably, the straight-line mechanism includes two sets of second sliding devices, a third ball screw, a second pulley assembly, two sets of second bearing devices, a third servo motor, and a sliding frame. The two sets of second sliding devices are respectively installed on both sides of the rotating plate. Each second sliding device includes a third slide rail and a third slider. The third slide rail is detachably connected to the rotating plate, and the third slider is slidably connected to the third slide rail. The two ends of the third ball screw are connected to the rotating plate between the two sets of second sliding devices through the two sets of second bearing devices. The working end of the third servo motor is connected to one end of the third ball screw through the second pulley assembly. The third servo motor provides power for the rotation of the third ball screw. The two ends of the sliding frame are detachably connected to the third slider in the two sets of second sliding devices, and the middle part of the sliding frame is detachably connected to the ball nut of the third ball screw.

[0013] By adopting the above technical solution, the third slide rail and the third slider in the two sets of second sliding devices are symmetrically distributed on both sides of the rotating plate, providing bidirectional stable support for the sliding frame, avoiding tilting or jamming, ensuring the straightness and smoothness of the straight movement, and the third ball screw converts the rotational motion of the third servo motor into the linear displacement of the sliding frame, meeting the straight distance requirements of the welfare seat.

[0014] Preferably, the sliding mounting mechanism includes a mounting frame, two sets of third sliding devices, a fourth ball screw, a third pulley assembly, two sets of third bearing devices, a fourth servo motor, and a second sliding plate. The two sets of third sliding devices are respectively mounted on both sides of the bottom of the second sliding plate. Each third sliding device includes a fourth slide rail and a fourth slider. The fourth slide rail is detachably connected to the bottom of the second sliding plate, and one end of the fourth slider is slidably connected to the fourth slide rail. The other end of the fourth slider in the two sets of third sliding devices is fixedly connected to both ends of the mounting frame. The two ends of the fourth ball screw are connected to the second sliding plate between the two sets of third sliding devices through the two sets of third bearing devices. The ball nut on the fourth ball screw is detachably connected to the middle part of the mounting frame. The fourth servo motor is connected to one end of the fourth ball screw through the third pulley assembly, and the fourth servo motor provides power for the rotation of the fourth ball screw.

[0015] By adopting the above technical solution, two sets of third sliding devices are respectively installed on both sides of the bottom of the second sliding plate. The fourth slider in each third sliding device slides on the fourth slide rail, providing a stable guide for the mounting frame and reducing shaking and deviation during the sliding process. The fourth ball screw converts the rotational motion of the fourth servo motor into the linear motion of the mounting frame, which can achieve high-precision position control and meet the requirements of the welfare seat for the sliding position. The mounting frame is connected to the third sliding device through the fourth sliders at both ends, and the middle part is connected to the ball nut of the fourth ball screw, forming a stable three-point support structure.

[0016] Preferably, the lifting mechanism includes a first link and a second link device. One end of the first link is rotatably connected to one end of the side of the sliding frame, and the other end of the first link is rotatably connected to one end of the side of the mounting frame. The second link device includes two sets of pressure plates and multiple sets of rotating shafts. The two sets of pressure plates are connected as one unit by rotating shafts. One end of the two sets of pressure plates is rotatably connected to the other end of the side of the sliding frame, and the other end of the two sets of pressure plates is rotatably connected to the other end of the side of the mounting frame. The first link, the second link device, the mounting frame, and the sliding frame form a four-bar linkage mechanism. The multiple sets of rotating shafts are slidably connected to the inclined slide rails on both sides of the rotating plate.

[0017] By adopting the above technical solution, the first link, the second link device, the mounting frame, and the sliding frame form a four-bar linkage mechanism. When the sliding frame slides, the rotating shaft in the second link device slides on the inclined slide rail. The inclined slide rail provides a clear guide trajectory for the rotation of the first link and the second link device. The rotation under the action of gravity will proceed along the preset path of the slide rail, so that the mounting frame can be driven to rise and fall smoothly, reducing the shaking and instability factors during the lifting process, and improving the accuracy and reliability of the lifting. The first link and the second link device form a stable support structure during the lifting process, which can evenly distribute the load borne by the mounting frame. This stable support structure can effectively prevent the mounting frame from tilting or deforming during the lifting process.

[0018] Preferably, multiple sets of folding support devices are provided on both sides of the second sliding plate. The folding support device includes a support rod, a drive rod, a linear guide rail, a sliding block, and an electric push rod. The linear guide rail is detachably connected to one side of the second sliding plate. One end of the sliding block is slidably connected to the linear guide rail. The base of the electric push rod is detachably connected to the second sliding plate at one end of the linear guide rail. The working end of the electric push rod is fixedly connected to one side of the sliding block. The electric push rod provides power for the sliding of the sliding block. One end of the drive rod is rotatably connected to the other end of the sliding block. The other end of the drive rod is rotatably connected to the middle part of the support rod. One end of the support rod is rotatably connected to one end of the side of the second sliding plate.

[0019] By adopting the above technical solution, the folding support device can be folded when not in use, and the support rod, drive rod and other components can be put away to reduce the space occupied and facilitate the sliding of the equipment. When the support device is unfolded, the support rod, drive rod and second sliding plate form a stable structure, similar to the support principle of a triangle, which can evenly distribute the load and provide reliable support for the second sliding plate, ensuring that it remains stable when bearing heavy objects and is not easy to shake or deform.

[0020] In summary, this application includes at least one of the following beneficial technical effects: The servo electric cylinder converts the rotary motion of the servo motor into linear motion, controlling the sliding distance and speed of the second slider on the second slide rail. Through the connection of the connecting rod and the rotating plate, the linear motion is converted into rotation angle control of the rotating plate, meeting the needs of different users for seat rotation angle. The rotating support provides additional support points for the rotating plate, enhancing its stability during rotation. Together with the connecting rod, it forms a stable triangular support structure capable of withstanding large loads, ensuring the seat does not sway or tilt during rotation. The inclined slide rails on both sides of the rotating plate cooperate with the lifting mechanism. The servo electric cylinder, the second slide rail, and the second slider, in conjunction with the connecting rod, form a linear layout, saving space compared to the curved structure of an arc rack. This design adapts to narrow installation environments under the seat, and the detachable connection design facilitates adjustment of the installation position according to different vehicle models.

[0021] The first link, the second link, the mounting frame, and the sliding frame form a four-bar linkage. When the sliding frame slides, the rotating shaft in the second link slides on the inclined slide rail. The inclined slide rail provides a clear guide trajectory for the rotation of the first link and the second link. The rotation under gravity will proceed along the preset path of the slide rail, so that the mounting frame can be driven to rise and fall smoothly, reducing swaying and instability during the lifting process, and improving the accuracy and reliability of the lifting. The first link and the second link form a stable support structure during the lifting process, which can evenly distribute the load borne by the mounting frame. This stable support structure can effectively prevent the mounting frame from tilting or deforming during the lifting process. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure in the embodiment.

[0023] Figure 2 This is a schematic diagram of the translation mechanism in the embodiment.

[0024] Figure 3 This is a schematic diagram of the rotating mechanism in the embodiment.

[0025] Figure 4 This is a cross-sectional schematic diagram of the internal structure of the servo electric cylinder in the embodiment.

[0026] Figure 5 This is a schematic diagram of the straight-line mechanism in the embodiment.

[0027] Figure 6 This is a schematic diagram of the sliding mounting mechanism in the embodiment.

[0028] Figure 7 This is a schematic diagram of the lifting mechanism in the embodiment.

[0029] Figure 8This is a schematic diagram of the folding support device in the embodiment.

[0030] Explanation of reference numerals in the attached drawings: 1. Base plate; 2. Translation mechanism; 21. First sliding device; 211. First slide rail; 212. First slider; 22. First ball screw; 23. First bearing device; 24. First servo motor; 25. First sliding plate; 3. Rotation mechanism; 31. Servo electric cylinder; 311. Second servo motor; 312. Cylinder body; 313. Telescopic sleeve; 314. Second ball screw; 315. First pulley assembly; 32. Second slide rail; 33. Second slider; 34. Connecting rod; 35. Rotating plate; 36. Rotating support seat; 37. Inclined slide rail; 4. Straight-line mechanism; 41. Second sliding device; 411. Third slide rail; 412. First sliding plate; 413. First sliding plate; 214. First sliding plate; 215. First sliding plate; 216. First sliding plate; 217. First sliding plate; 218. First sliding plate; 219. First sliding plate; 220. First sliding plate; 23. First sliding plate; 24. First sliding plate; 25. First sliding plate; 26. First sliding plate; 27. First sliding plate; 28. First sliding plate; 29. ​​First sliding plate; 20. First sliding plate; 219. First sliding plate; 210. First sliding plate; 211. First sliding plate; 212 ...1. First sliding plate; 212. First sliding plate; 213. First sliding plate; 214. 42. Third ball screw; 43. Second pulley assembly; 44. Second bearing device; 45. Third servo motor; 46. Sliding frame; 5. Sliding mounting mechanism; 51. Mounting frame; 52. Third sliding device; 521. Fourth slide rail; 522. Fourth slider; 53. Fourth ball screw; 54. Third pulley assembly; 55. Third bearing device; 56. Fourth servo motor; 57. Second sliding plate; 6. Lifting mechanism; 61. First connecting rod; 62. Second connecting rod device; 621. Pressure plate; 622. Rotating shaft; 7. Folding support device; 71. Support rod; 72. Drive rod; 73. Linear guide rail; 74. Sliding block; 75. Electric actuator. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0032] This application discloses a drive structure for use in welfare seats. (Refer to...) Figure 1 and Figure 2The system includes a translation mechanism 2, a rotation mechanism 3, a straight-line mechanism 4, two sets of lifting mechanisms 6, a sliding mounting mechanism 5, and a base plate 1. The translation mechanism 2 is mounted on the base plate 1 and includes two sets of first sliding devices 21, a first ball screw 22, two sets of first bearing devices 23, a first servo motor 24, and a first sliding plate 25. The two sets of first sliding devices 21 are mounted on both sides of the base plate 1. Each first sliding device 21 includes a first slide rail 211 and a first slider 212. The first slide rail 211 is bolted to the base plate 1, and one end of the first slider 212 is mounted on the first slide rail 212. On the rail 211, the first slider 212 is slidably connected to the first slide rail 211. The two ends of the first ball screw 22 are connected to the bottom of the first sliding plate 25 between the two sets of first sliding devices 21 through two sets of first bearing devices 23. The first ball screw 22 is rotatably connected to the first bearing device 23. The first bearing device 23 is bolted to the first sliding plate 25. The ball nut of the first ball screw 22 and the other end of the first slider 212 are bolted to the base plate 1. The first servo motor 24 rotates to drive the first ball screw 22, so that the first sliding plate 25 slides on the base plate 1.

[0033] Reference Figure 1 , Figure 3 and Figure 4 The rotating mechanism 3 is mounted on the first sliding plate 25. The rotating mechanism 3 includes a servo electric cylinder 31, a second slide rail 32, a second slider 33, a connecting rod 34, a rotating plate 35, and a rotating support 36. The servo electric cylinder 31 includes a second servo motor 311, a cylinder body 312, a telescopic sleeve 313, a second ball screw 314, and a first pulley assembly 315. The second servo motor 311 is bolted to the cylinder body 312. The working end of the second servo motor 311 is connected to the second ball screw 314 via the first pulley assembly 315. The second ball screw 314 is mounted inside the cylinder body 312. One end of the telescopic sleeve 313 is fixedly connected to the moving part of the second ball screw 314 inside the cylinder body 312. The telescopic sleeve 313 is slidably connected to the cylinder body 312. The cylinder body 312 is bolted to... On the first sliding plate 25, the second slide rail 32 is bolted to one end of the first sliding plate 25. One end of the second slider 33 is slidably connected to the second slide rail 32. The other end of the telescopic sleeve 313 is fixedly connected to one side of the second slider 33. One end of the connecting rod 34 is hinged to the other end of the second slider 33. The other end of the connecting rod 34 is hinged to one end of the bottom of the rotating plate 35. One end of the rotating support 36 is bolted to the other end of the second sliding plate 57. The other end of the rotating support 36 is bolted to the other end of the bottom of the rotating plate 35. The second servo motor 311 provides power for the rotation of the second ball screw 314, causing the telescopic sleeve 313 to push the second sliding block 74 to drive the connecting rod 34 and rotate the rotating plate 35. Inclined slide rails 37 are provided on both sides of the rotating plate 35.

[0034] Reference Figure 1 and Figure 5 The straight-moving mechanism 4 is mounted on the rotating plate 35. The straight-moving mechanism 4 includes two sets of second sliding devices 41, a third ball screw 42, a second pulley assembly 43, two sets of second bearing devices 44, a third servo motor 45, and a sliding frame 46. The two sets of second sliding devices 41 are respectively mounted on both sides of the rotating plate 35. The second sliding device 41 includes a third slide rail 411 and a third slider 412. The third slide rail 411 is bolted to the rotating plate 35, and the third slider 412 is mounted on the third slide rail 411 and slidably connected to the third slide rail 411. The two ends of the third ball screw 42 are connected to the rotating plate between the two sets of second sliding devices 41 through the two sets of second bearing devices 44. On plate 35, the third ball screw 42 is rotatably connected to two sets of second bearing devices 44, which are bolted to the rotating plate 35. The working end of the third servo motor 45 is connected to one end of the third ball screw 42 through the second pulley assembly 43. The two ends of the sliding frame 46 are bolted to the third slider 412 in the two sets of second sliding devices 41. The middle part of the sliding frame 46 is bolted to the ball nut of the third ball screw 42. The third servo motor 45 provides power for the rotation of the third ball screw 42 through the second pulley assembly 43. When the third ball screw 42 rotates, the ball nut of the third ball screw 42 moves linearly, driving the sliding frame 46 to move linearly.

[0035] Reference Figure 1 , Figure 6 and Figure 7The lifting mechanism 6 includes a first connecting rod 61 and a second connecting rod device 62. The second connecting rod device 62 includes two sets of pressure plates 621 and multiple sets of rotating shafts 622. Multiple sets of rotating shafts 622 are installed between the two sets of pressure plates 621. The two sets of pressure plates 621 are connected as one unit by the rotating shafts 622. The multiple sets of rotating shafts 622 rotate on the two sets of pressure plates 621. One end of the first connecting rod 61 is hinged to one end of the side of the sliding frame 46. One end of each of the two sets of pressure plates 621 is hinged to the side of the sliding frame 46. On the other end, the sliding mounting mechanism 5 includes a mounting frame 51, two sets of third sliding devices 52, a fourth ball screw 53, a third pulley assembly 54, two sets of third bearing devices 55, a fourth servo motor 56, and a second sliding plate 57. The two sets of third sliding devices 52 are respectively installed on both sides of the bottom of the second sliding plate 57. Each third sliding device 52 includes a fourth slide rail 521 and a fourth slider 522. The fourth slide rail 521 is bolted to the bottom of the second sliding plate 57, and the fourth slider 522... The fourth slider 522 is slidably connected to the fourth slide rail 521. The other end of the fourth slider 522 in the two sets of third sliding devices 52 is fixedly connected to both ends of the mounting frame 51. The two ends of the fourth ball screw 53 are connected to the second sliding plate 57 between the two sets of third sliding devices 52 through two sets of third bearing devices 55. The ball nut on the fourth ball screw 53 is bolted to the middle part of the mounting frame 51. The fourth servo motor 56 is connected to one end of the fourth ball screw 53 through the third pulley assembly 54. The fourth servo motor 56 provides power for the rotation of the fourth ball screw 53, causing the second sliding plate 57 connected to the fourth ball screw 53 to slide linearly outward. The other end of the first connecting rod 61 in the lifting mechanism 6 is rotatably connected to one end of the side of the mounting frame 51. The other ends of the two sets of pressure plates 621 are rotatably connected to the other end of the side of the mounting frame 51. The first connecting rod 61, the second connecting rod device 62, the mounting frame 51 and the sliding frame 46 form a four-bar linkage mechanism.

[0036] The rotating shaft 622 of the second linkage device 62 is slidably connected to the inclined slide rails 37 on both sides of the rotating plate 35. The lifting mechanism 6 moves along the inclined slide rails 37 on both sides of the rotating plate 35 by the movement of the straight mechanism 4, so that the lifting mechanism 6 drives the sliding mounting mechanism 5 to rotate and descend. When the sliding mounting mechanism 5 needs to be retracted, the straight mechanism 4 moves back, so that the lifting mechanism 6 drives the sliding mounting mechanism 5 to rotate in the opposite direction and rise.

[0037] Reference Figure 8Multiple sets of folding support devices 7 are provided on both sides of the second sliding plate 57. The folding support device 7 includes a support rod 71, a drive rod 72, a linear guide rail 73, a sliding block 74, and an electric push rod 75. The linear guide rail 73 is bolted to one side of the second sliding plate 57. One end of the sliding block 74 is mounted on the linear guide rail 73, and the linear guide rail 73 and the sliding block 74 are slidably connected. The base of the electric push rod 75 is bolted to one end of the second sliding plate 57 at the linear guide rail 73. The working end of the electric push rod 75 is fixedly connected to one side of the sliding block 74. One end of the drive rod 72 is hinged to the other end of the sliding block 74, and the other end of the drive rod 72 is hinged to the middle part of the support rod 71. One end of the support rod 71 is rotatably connected to one end of the side of the second sliding plate 57. When the second sliding plate 57 slides outward, the electric push rod 75 provides power for the sliding of the sliding block 74. The sliding of the sliding block 74 causes the drive rod 72 to push the support rod 71 up to form support with the ground.

[0038] The working principle of a drive structure applied to a welfare seat in this application is as follows: After the first servo motor 24 starts, it directly drives the first ball screw 22 to rotate. The ball nut of the first ball screw 22 is bolted to the base plate 1. The first ball screw 22 drives the first sliding plate 25 to slide linearly along the first slide rail 211 on the base plate 1 in the horizontal direction, completing the translation adjustment of the overall mechanism. The second servo motor 311 drives the second ball screw 314 in the cylinder 312 to rotate through the first pulley assembly 315. The moving part of the second ball screw 314 drives the telescopic sleeve 313 to make linear telescopic movements along the cylinder 312, so that the second slider 33 slides along the second slide rail 32 on the first sliding plate 25. The second slider 33 is connected to the first sliding plate 25 by a hinge. One end of the connecting rod 34 is connected, and the other end of the connecting rod 34 is connected to one end of the bottom of the rotating plate 35 via a hinge. The other end of the bottom of the rotating plate 35 is rotatably connected to the first sliding plate 25 via a rotating support 36. When the connecting rod 34 is subjected to force, the rotating plate 35 rotates around the rotating support 36 as a fulcrum, so that the rotating plate 35 can complete the angle adjustment. When the third ball screw 42 rotates, the ball nut of the third ball screw 42 moves linearly. The middle of the sliding frame 46 is bolted to the ball nut of the third ball screw 42. The ball nut of the third ball screw 42 drives the sliding frame 46 to slide linearly along the third slider 412 on the third slide rail 411, realizing the linear drive function of the straight-line mechanism 4. The lifting mechanism 6 consists of the first connecting rod 61 and the second connecting rod device 6. Composed of two parts, together with the sliding frame 46 and the mounting frame 51, it forms a four-bar linkage mechanism. One end of the first link 61 is hinged to one side of the sliding frame 46. One end of the two sets of pressure plates 621 of the second link device 62 are hinged to the other side of the sliding frame 46, and the other end of the first link 61 is hinged to one side of the mounting frame 51. The other end of the pressure plates 621 are hinged to the other side of the mounting frame 51. The rotating shaft 622 of the second link device 62 is slidably connected to the inclined slide rails 37 on both sides of the rotating plate 35. When the straight-moving mechanism 4 drives the sliding frame 46 to move linearly along the rotating plate 35, the sliding frame 46 drives the rotating shaft 622 of the second link device 62 to slide along the inclined slide rails 37 through the four-bar linkage mechanism. Constrained by the tilt angle, the four-bar linkage mechanism undergoes a shape change, pushing the mounting frame 51... The mounting bracket 51 and sliding mounting mechanism 5 enable rotational descent or reverse rotational retraction. When the fourth ball screw 53 rotates, the ball nut of the fourth ball screw 53 is fixed to the mounting bracket 51 of the fourth slider 522, causing the fourth ball screw 53 to move linearly. This allows the second sliding plate 57 to slide linearly outward relative to the mounting bracket 51, completing the lateral position adjustment. The sliding block 74 is hinged to one end of the drive rod 72, and the other end of the drive rod 72 is hinged to the middle of the support rod 71. The base of the electric actuator 75 is fixed on the second sliding plate 57, and the working end of the electric actuator 75 is connected to the sliding block 74. When the electric actuator 75 extends or retracts, it drives the sliding block 74 to slide along the linear guide rail 73. One end of the support rod 71 is rotatably connected to the side of the second sliding plate 57. When the sliding block 74 slides...The drive rod 72 pushes the support rod 71 to rotate around its connection point with the second sliding plate 57, causing the other end of the support rod 71 to contact the ground and form a stable support. The retraction of the electric actuator 75 can fold and retract the support rod 71.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A drive structure applied to a welfare seat, characterized by: The system includes a translation mechanism (2), a rotation mechanism (3), a straight-line mechanism (4), two sets of lifting mechanisms (6), a sliding mounting mechanism (5), and a base plate (1). The translation mechanism (2) is detachably connected to the base plate (1). The rotation mechanism (3) is detachably connected to the translation mechanism (2) and is slidably connected to the base plate (1) through the translation mechanism (2). The straight-line mechanism (4) is detachably connected to the rotation mechanism (3) and is rotatably connected to the translation mechanism (2) through the rotation mechanism (3). One end of each of the two sets of lifting mechanisms (6) is installed on both sides of the straight-line mechanism (4). The lifting mechanism (6) is slidably connected to the rotation mechanism (3) through the straight-line mechanism (4). The sliding mounting mechanism (5) is installed on the other end of the two sets of lifting mechanisms (6) and is rotatably connected to the lifting mechanism (6).

2. The drive structure for a welfare seat according to claim 1, characterized in that: The translation mechanism (2) includes two sets of first sliding devices (21), a first ball screw (22), two sets of first bearing devices (23), a first servo motor (24), and a first sliding plate (25). The two sets of first sliding devices (21) are respectively installed on both sides of the base plate (1). The first sliding device (21) includes a first slide rail (211) and a first slider (212). One end of the first slider (212) is slidably connected to the first slide rail (211). The first slide rail (211) is detachably connected to the base plate (1). The first sliding plate (25) is installed on the top of the first sliding device (21) in the two sets of first sliding devices (21). The first sliding plate (25) is detachably connected to the first slider (212). The two ends of the first ball screw (22) are connected to the bottom of the first sliding plate (25) between the two sets of first sliding devices (21) through two sets of first bearing devices (23). The base of the first servo motor (24) is detachably connected to the first sliding plate (25) at one end of the first ball screw (22). The working end of the first servo motor (24) is connected to the first ball screw (22). The first servo motor (24) provides power for the rotation of the first ball screw (22). The ball nut on the first ball screw (22) is detachably connected to the base plate (1).

3. The drive structure for a welfare seat according to claim 1, wherein: The rotating mechanism (3) includes a servo electric cylinder (31), a second slide rail (32), a second slider (33), a connecting rod (34), a rotating plate (35), and a rotating support (36). The second slide rail (32) is detachably connected to one end of the first sliding plate (25), and one end of the second slider (33) is slidably connected to the second slide rail (32). The servo electric cylinder (31) is set on the first sliding plate (25) at one end of the second slide rail (32). The working end of the servo electric cylinder (31) is fixedly connected to the second slider (33). One end of the connecting rod (34) is rotatably connected to the other end of the second slider (33), and the other end of the connecting rod (34) is rotatably connected to one end of the bottom of the rotating plate (35). One end of the rotating support (36) is detachably connected to the other end of the second sliding plate (57), and the other end of the rotating support (36) is detachably connected to the other end of the bottom of the rotating plate (35). Inclined slide rails (37) are provided on both sides of the rotating plate (35).

4. The drive structure for a welfare seat according to claim 3, wherein: The servo electric cylinder (31) includes a second servo motor (311), a cylinder body (312), a telescopic sleeve (313), a second ball screw (314), and a first pulley assembly (315). The second servo motor (311) is bolted to the cylinder body (312). The working end of the second servo motor (311) is connected to the second ball screw (314) through the first pulley assembly (315). The second servo motor (311) provides power for the rotation of the second ball screw (314). The second ball screw (314) is installed inside the cylinder body (312). One end of the telescopic sleeve (313) is fixedly connected to the moving part of the second ball screw (314) inside the cylinder body (312). The other end of the telescopic sleeve (313) is fixedly connected to the second slider (33). The telescopic sleeve (313) is slidably connected to the cylinder body (312).

5. The drive structure for a welfare seat according to claim 1, wherein: The straight-line mechanism (4) includes two sets of second sliding devices (41), a third ball screw (42), a second pulley assembly (43), two sets of second bearing devices (44), a third servo motor (45), and a sliding frame (46). The two sets of second sliding devices (41) are respectively installed on both sides of the rotating plate (35). The second sliding device (41) includes a third slide rail (411) and a third slider (412). The third slide rail (411) is detachably connected to the rotating plate (35), and the third slider (412) is slidably connected to the third slide rail (411). The third ball screw... The two ends of (42) are connected to the rotating plate (35) between the two sets of second sliding devices (41) through two sets of second bearing devices (44). The working end of the third servo motor (45) is connected to one end of the third ball screw (42) through the second pulley assembly (43). The third servo motor (45) provides power for the rotation of the third ball screw (42). The two ends of the sliding frame (46) are respectively detachably connected to the third slider (412) in the two sets of second sliding devices (41). The middle part of the sliding frame (46) is detachably connected to the ball nut of the third ball screw (42).

6. The drive structure for a welfare seat according to claim 1, wherein: The sliding mounting mechanism (5) includes a mounting bracket (51), two sets of third sliding devices (52), a fourth ball screw (53), a third pulley assembly (54), two sets of third bearing devices (55), a fourth servo motor (56), and a second sliding plate (57). The two sets of third sliding devices (52) are respectively mounted on both sides of the bottom of the second sliding plate (57). Each third sliding device (52) includes a fourth slide rail (521) and a fourth slider (522). The fourth slide rail (521) is detachably connected to the bottom of the second sliding plate (57), and one end of the fourth slider (522) is slidably connected to the fourth slide rail (521). 1) On the upper part, the other end of the fourth slider (522) in the two sets of the third sliding devices (52) is fixedly connected to both ends of the mounting frame (51). The two ends of the fourth ball screw (53) are connected to the second sliding plate (57) between the two sets of the third sliding devices (52) through the two sets of the third bearing devices (55). The ball nut on the fourth ball screw (53) is detachably connected to the middle part of the mounting frame (51). The fourth servo motor (56) is connected to one end of the fourth ball screw (53) through the third pulley assembly (54). The fourth servo motor (56) provides power for the rotation of the fourth ball screw (53).

7. The drive structure for a welfare seat according to claim 1, wherein: The lifting mechanism (6) comprises a first connecting rod (61) and a second connecting rod device (62), one end of the first connecting rod (61) is rotatably connected to one end of the side of the sliding frame (46), the other end of the first connecting rod (61) is rotatably connected to one end of the side of the mounting frame (51), the second connecting rod device (62) comprises two groups of pressing plates (621) and multiple groups of rotating shafts (622), the two groups of pressing plates (621) are connected as a whole through the rotating shafts (622), one end of the two groups of pressing plates (621) is rotatably connected to the other end of the side of the sliding frame (46), the other end of the two groups of pressing plates (621) is rotatably connected to the other end of the side of the mounting frame (51), the first connecting rod (61), the second connecting rod device (62), the mounting frame (51) and the sliding frame (46) form a four-connecting-rod mechanism, and the multiple groups of rotating shafts (622) are slidably connected with the inclined slide rails (37) on both sides of the rotating plate (35).

8. The drive structure for a welfare seat according to claim 6, characterized by: A plurality of folding support devices (7) are arranged on both sides of the second sliding plate (57), the folding support device (7) comprises a support rod (71), a driving rod (72), a linear guide rail (73), a sliding block (74) and an electric push rod (75), the linear guide rail (73) is detachably connected to one side of the second sliding plate (57), one end of the sliding block (74) is slidably connected to the linear guide rail (73), the base of the electric push rod (75) is detachably connected to the second sliding plate (57) at one end of the linear guide rail (73), and the working end of the electric push rod (75) is fixedly connected to one side of the sliding block (74), the electric push rod (75) provides power for the sliding of the sliding block (74), one end of the driving rod (72) is rotatably connected to the other end of the sliding block (74), the other end of the driving rod (72) is rotatably connected to the middle part of the support rod (71), and one end of the support rod (71) is rotatably connected to one end of the side of the second sliding plate (57).

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