Adjustable automatic armrest for automobile door

Abstract

The utility model discloses an adjustable automatic armrest of an automobile door, which comprises a driving motor, an electromagnetic clutch, an X-axis assembly, a Y-axis assembly and a Z-axis assembly, the X-axis assembly, the Y-axis assembly and the Z-axis assembly respectively push the armrest to move in respective directions through a gear, a worm and worm wheel and a lead screw nut mechanism, and the armrest can be flexibly adjusted in the X direction, the Y direction and the Z direction through the driving motor and the electromagnetic clutch. The driving motor provides power, the electromagnetic clutch controls a power transmission path, and it is ensured that the handrail is unidirectionally or synchronously adjusted according to needs. The passenger seat is simple in structure and convenient to operate, meets individual requirements of passengers, improves riding comfort and convenience, and has remarkable technical progress and practical application value.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories, in particular to an adjustable automatic armrest for automobile doors. Background Art

[0002] In modern car design, door armrests are an essential component of the interior, providing support for passengers when getting in and out of the vehicle and providing a comfortable place for their arms during driving. However, traditional door armrests are mostly fixed, and their position, height, and angle cannot be adjusted to suit passenger needs, which to some extent limits passenger comfort and convenience.

[0003] With the development of the automotive industry and rising consumer demand, more and more cars are equipped with electrically adjustable armrests to accommodate different passenger body types, seating habits, and interior space layouts. However, these electrically adjustable armrests are often complex, costly, and have relatively limited functionality, most of which only allow adjustment in a single direction (e.g., vertical).

[0004] Furthermore, while some high-end models are equipped with multi-adjustable armrests, their structures are more complex, increasing manufacturing costs and potentially making repair and maintenance difficult. Furthermore, these multi-adjustable armrests are often driven by multiple motors, resulting in a complex control system. Adjustments in different directions may require separate operations, creating inconvenience for passengers.

[0005] Therefore, it is particularly important to develop an automatic car door armrest with a simple structure, easy operation, multi-dimensional adjustment and reasonable cost. This armrest needs to be able to be flexibly adjusted in three dimensions according to the needs of passengers to meet the personalized needs of different passengers while ensuring the comfort and convenience of riding. Utility Model Content

[0006] The utility model aims to solve the above problems and provide an adjustable automatic car door armrest. Through the cooperation of a drive motor and an electromagnetic clutch, the armrest can be adjusted independently or synchronously in the X, Y and Z dimensions to meet the needs of different passengers.

[0007] An adjustable automatic armrest for a car door, comprising:

[0008] an armrest housing, which is arranged on the inner side of the vehicle door;

[0009] Adjustment plate assembly, which is used to move the armrest shell on the X, Y, and Z axes;

[0010] A fixing assembly is installed on the vehicle door to provide a mounting position. The fixing assembly includes a base main board, a left base board, and a right base board. The left base board and the right base board are perpendicular to the base main board and fixedly installed at the left and right ends of the base main board. The outer sides of the left base board and the right base board are fixedly installed with Y-axis tracks perpendicular to the base board;

[0011] A drive motor for providing power for adjusting the armrest;

[0012] The X-axis assembly is used to adjust the front and rear position of the armrest in a direction parallel to the vehicle body;

[0013] The Y-axis assembly is used to adjust the width of the armrest in the direction perpendicular to the door;

[0014] The Z-axis assembly is used to adjust the height of the armrest in the vertical direction;

[0015] The drive motor, X-axis assembly, Y-axis assembly, and Z-axis assembly are all fixedly mounted on the base mainboard through supports;

[0016] The drive motor outputs driving force through the driving wheel, which is respectively connected to the fourth gear above and the first gear teeth below. The first gear is connected to the X-axis assembly through an electromagnetic clutch. The left and right sides of the fourth gear are respectively connected to the Y-axis assembly and the Z-axis assembly through electromagnetic clutches. The electromagnetic clutch can be opened and closed to enable the drive motor to control the armrest to be adjusted individually or together in the X, Y, and Z directions.

[0017] As a preferred solution of the present invention, the adjustment plate assembly includes an X-axis top slide, an X-axis right slide, and a YZ-axis slide:

[0018] A bending plate is provided on the right side of the X-axis top slide, which is fixedly connected to the X-axis right slide through the bending plate. Grooves are provided at the front and rear ends of the X-axis right slide, and an X-axis slider groove is slidably installed in the groove. The X-axis slider groove is arranged perpendicular to the direction of the car door;

[0019] The YZ-axis skateboard includes a horizontal straight plate and vertical plates integrally formed at both ends. An X-axis track is installed horizontally on the top of the straight plate, and a Z-axis track is installed vertically on the inner side of the vertical plate. The X-axis top skateboard is slidably connected to the X-axis track through a guide shoe. A Y-axis slider groove is installed vertically on the front of the straight plate of the YZ-axis skateboard, and a Z-axis slider groove is installed on the bottom of the straight plate of the YZ-axis skateboard. The Z-axis slider groove is set to be perpendicular to the car door. The X-axis slider groove, Y-axis slider groove, and Z-axis slider groove are all used to avoid movement in other directions to avoid getting stuck.

[0020] As a preferred solution of the present utility model, the X-axis assembly includes a second gear, a third gear, a first lead screw, an X-axis support seat, and a top slider. The second gear is connected to the electromagnetic clutch and is on the same axis. The third gear is connected to the second gear teeth. A drive nut is installed inside the third gear. The third gear and the drive nut are rotatably installed on the X-axis support seat through bearings. The X-axis support seat is fixedly connected to the base mainboard. The internal thread of the drive nut is connected to the first lead screw. The top slider is fixedly installed on the end of the first lead screw. The top slider is slidably installed in the X-axis slider groove. The front and rear position adjustment of the armrest is achieved by pushing the X-axis top slider through the first lead screw.

[0021] As a preferred solution of the present utility model, the Y-axis assembly includes a second worm gear, a second worm, and a third lead screw. The second worm is connected to the electromagnetic clutch and is on the same axis. The second worm gear is connected to the second worm teeth. A drive nut is installed in the second worm gear. The second worm gear and the drive nut are rotatably installed on the Y-axis support seat through bearings. The Y-axis support seat is fixedly connected to the base mainboard. The inner thread of the drive nut is connected to the third lead screw. The end of the third lead screw is fixedly installed with a top slider, and the top slider is slidably installed in the Y-axis slider groove. The YZ-axis slider is pushed by the third lead screw to adjust the width position of the armrest.

[0022] As a preferred solution of the present utility model, the Z-axis assembly includes a first worm, a first worm wheel, a second lead screw, and a Z-axis support seat. The first worm is connected to the electromagnetic clutch and is on the same axis. The first worm wheel is connected to the first worm teeth. A drive nut is installed in the first worm wheel. The first worm wheel and the drive nut are rotatably installed on the Z-axis support seat through bearings. The Z-axis support seat is fixedly connected to the base mainboard. The internal thread of the drive nut is connected to the second lead screw. The end of the second lead screw is fixedly installed with a top slider, and the top slider is slidably installed in the Z-axis slider groove. The YZ-axis slider is pushed by the second lead screw to adjust the height position of the armrest.

[0023] As a preferred solution of the present invention, a cross slider is installed on the Y-axis track and the Z-axis track. The cross slider can slide along the Y-axis track and the Z-axis track respectively to improve the stability of the YZ-axis slide when moving.

[0024] As a preferred solution of the present invention, two Y-axis tracks and two Z-axis tracks are symmetrically arranged.

[0025] As a preferred solution of the present invention, a window controller is installed on the right end surface of the slide on the right side of the X-axis, which is used to increase the overall length of the armrest and improve the comfort of use.

[0026] As a preferred solution of the present invention, the guide shoes of the X-axis top slide are provided in two numbers to improve sliding stability.

[0027] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0028] The present invention achieves independent or synchronous adjustment of the armrest in the X, Y, and Z directions through the coordination of the X-axis assembly, the Y-axis assembly, and the Z-axis assembly, meeting the personalized needs of different passengers. Compared with the traditional complex multi-motor drive system, the present invention adopts a combination of a single drive motor and an electromagnetic clutch, which greatly simplifies the structure and reduces costs. The opening and closing control of the electromagnetic clutch can conveniently achieve independent or synchronous adjustment of the armrest in different directions, and the operation is simple and fast.

[0029] The setting of the X-axis slider slot, Y-axis slider slot, Z-axis slider slot and cross slider effectively improves the stability and precision of the armrest during movement. The addition of the window controller increases the overall length of the armrest, providing passengers with a more comfortable support experience.

[0030] The utility model provides an automatic armrest for a car door which has a simple structure, is easy to operate and can be adjusted in multiple dimensions, and has significant technical progress and practical application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0032] Figure 2 This is a schematic diagram of the overall internal structure of the utility model;

[0033] Figure 3 It is an enlarged schematic diagram of the X-axis assembly and Z-axis assembly structure of the present utility model;

[0034] Figure 4 This is a schematic diagram of the rear structure of the Y-axis assembly and the Z-axis assembly of the present invention;

[0035] Figure 5 This is a schematic diagram of the internal structure of the adjustment plate assembly and the fixing component of the utility model;

[0036] Figure 6 This is a schematic diagram of the splitting of the X-axis right slide and the X-axis slider slot of the present invention;

[0037] Figure 7 This is a cross-sectional view of the connection between the third gear and the drive nut of the present utility model;

[0038] Figure 8 This is a schematic diagram of the cross slider structure of the utility model;

[0039] Figure 9 This is a schematic diagram of the top slider structure of the present utility model.

[0040] Figure: 1. Armrest housing; 2. Drive motor; 3. X-axis assembly; 4. Y-axis assembly; 5. Z-axis assembly; 6. Adjustment plate assembly; 7. Window controller; 8. First gear; 9. Electromagnetic clutch; 10. Second gear; 11. Third gear; 12. First lead screw; 13. X-axis support base; 14. Top slider; 15. Fourth gear; 16. First worm; 17. First worm gear; 18. Second lead screw; 19. Z-axis support base; 20. Second worm gear. 21. Second worm; 22. Third lead screw; 23. Base main board; 24. Left base plate; 25. Right base plate; 26. X-axis right slide; 27. X-axis top slide; 28. X-axis slider slot; 29. ​​YZ-axis slide; 30. Z-axis slider slot; 31. Y-axis slider slot; 32. X-axis track; 33. Y-axis track; 34. Z-axis track; 35. Cross slider; 36. Bearing; 37. Drive nut; 38. Y-axis support seat; 39. Support. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0042] Example 1

[0043] like Figures 1 to 9 As shown, a specific embodiment of an adjustable automobile door automatic armrest according to the utility model includes:

[0044] The armrest housing 1 is arranged on the inner side of the vehicle door and fixedly mounted on the X-axis top slide 27;

[0045] The adjustment plate assembly 6 is used to move the armrest housing 1 on the X, Y, and Z axes; the adjustment plate assembly 6 includes an X-axis top slide 27, an X-axis right slide 26, and a YZ-axis slide 29:

[0046] A bent plate is provided on the right side of the X-axis top slide 27, which is fixedly connected to the X-axis right slide 26 through the bent plate. The front and rear ends of the X-axis right slide 26 are provided with grooves, and an X-axis slider groove 28 is slidably installed in the groove. The X-axis slider groove 28 is set perpendicular to the direction of the car door;

[0047] The YZ-axis slide 29 includes a horizontal straight plate and vertical plates integrally formed at both ends. An X-axis track 32 is horizontally installed on the top of the straight plate, and a Z-axis track 34 is vertically installed on the inner side of the vertical plate. The X-axis top slide 27 is slidably connected to the X-axis track 32 through a guide shoe. A Y-axis slider groove 31 is vertically installed on the front of the straight plate of the YZ-axis slide 29, and a Z-axis slider groove 30 is installed on the bottom of the straight plate of the YZ-axis slide 29. The Z-axis slider groove 30 is set in a direction perpendicular to the vehicle door. The X-axis slider groove 28, the Y-axis slider groove 31, and the Z-axis slider groove 30 are all used to avoid movement in other directions to avoid getting stuck;

[0048] A fixing assembly is installed on the vehicle door to provide a mounting location. The fixing assembly includes a base main plate 23, a left base plate 24, and a right base plate 25. The left base plate 24 and the right base plate 25 are perpendicular to the base main plate 23 and fixedly installed at the left and right ends of the base main plate 23. The outer sides of the left base plate 24 and the right base plate 25 are fixedly installed with Y-axis tracks 33 perpendicular to the base plate;

[0049] Drive motor 2, used to provide power for adjusting the armrest;

[0050] The X-axis assembly 3 is used to adjust the front and rear position of the armrest in a direction parallel to the vehicle body; the X-axis assembly 3 includes a second gear 10, a third gear 11, a first lead screw 12, an X-axis support seat 13, and a top slider 14. The second gear 10 is connected to the electromagnetic clutch 9 and is on the same axis. The third gear 11 is tooth-connected with the second gear 10. A drive nut 37 is installed inside the third gear 11. The third gear 11 and the drive nut 37 are rotatably mounted on the X-axis support seat 13 through a bearing 36. The X-axis support seat 13 is fixedly connected to the base main board 23. The internal thread of the drive nut 37 is connected to the first lead screw 12. The top slider 14 is fixedly mounted on the end of the first lead screw 12. The top slider 14 is slidably mounted in the X-axis slider groove 28. The X-axis top slider 27 is pushed by the first lead screw 12 to achieve the front and rear position adjustment of the armrest;

[0051] The Y-axis assembly 4 is used to adjust the width position of the armrest in a direction perpendicular to the vehicle door; the Y-axis assembly 4 includes a second worm gear 20, a second worm 21, and a third lead screw 22. The second worm 21 is connected to the electromagnetic clutch 9 and is on the same axis. The second worm gear 20 is tooth-connected with the second worm 21. A drive nut 37 is installed in the second worm gear 20. The second worm gear 20 and the drive nut 37 are rotatably mounted on the Y-axis support seat 38 through a bearing 36. The Y-axis support seat 38 is fixedly connected to the base main board 23. The inner thread of the drive nut 37 is connected to the third lead screw 22. The end of the third lead screw 22 is fixedly mounted with a top slider 14. The top slider 14 is slidably mounted in the Y-axis slider groove 31. The YZ-axis slide plate 29 is pushed by the third lead screw 22 to adjust the width position of the armrest;

[0052] The Z-axis assembly 5 is used to adjust the height position of the armrest in the vertical direction; the Z-axis assembly 5 includes a first worm 16, a first worm wheel 17, a second lead screw 18, and a Z-axis support seat 19. The first worm 16 is connected to the electromagnetic clutch 9 and is on the same axis. The first worm wheel 17 is tooth-connected with the first worm 16. A drive nut 37 is installed in the first worm wheel 17. The first worm wheel 17 and the drive nut 37 are rotatably mounted on the Z-axis support seat 19 through a bearing 36. The Z-axis support seat 19 is fixedly connected to the base main board 23. The internal thread of the drive nut 37 is connected to the second lead screw 18. The end of the second lead screw 18 is fixedly mounted with a top slider 14, which is slidably mounted in the Z-axis slider groove 30. The second lead screw 18 pushes the YZ-axis slide plate 29 to achieve the height adjustment of the armrest;

[0053] The drive motor 2, X-axis assembly 3, Y-axis assembly 4, and Z-axis assembly 5 are all fixedly mounted on the base mainboard 23 via the support 39;

[0054] The drive motor 2 outputs driving force through the driving wheel, which is respectively connected to the fourth gear 15 above and the first gear 8 below. The first gear 8 is connected to the X-axis assembly 3 through an electromagnetic clutch 9. The left and right sides of the fourth gear 15 are respectively connected to the Y-axis assembly 4 and the Z-axis assembly 5 through electromagnetic clutches 9. The electromagnetic clutch 9 can be opened and closed to enable the drive motor 2 to control the individual or joint adjustment of the armrest in the X, Y, and Z directions;

[0055] The Y-axis track 33 and the Z-axis track 34 are symmetrically arranged in pairs, and a cross slider 35 is installed on the Y-axis track 33 and the Z-axis track 34. The cross slider 35 can slide along the Y-axis track 33 and the Z-axis track 34 respectively, so as to improve the stability of the YZ-axis slide 29 when moving;

[0056] A window controller 7 is mounted on the right end surface of the X-axis right side slide 26, which is used to increase the overall length of the armrest and improve user comfort;

[0057] The number of guide shoes of the X-axis top slide 27 is two to improve sliding stability.

[0058] The working principle of this utility model:

[0059] The drive motor 2 is the power source of the entire system. When the armrest position needs to be adjusted, the drive motor 2 is started and power is transmitted through the driving wheel on its output shaft. The driving wheel is respectively connected to the fourth gear 15 above and the first gear 8 below, forming two power transmission paths. The electromagnetic clutch 9 is a key component for realizing multi-dimensional adjustment of the armrest. It can switch between powered on and powered off states, thereby connecting or disconnecting the power transmission between the drive motor 2 and each transmission component. When the position in a certain direction needs to be adjusted, the corresponding electromagnetic clutch 9 is energized to transmit the power of the drive motor 2 to the transmission component in that direction; while the electromagnetic clutches 9 in other directions remain powered off to avoid power transmission and realize one-way adjustment.

[0060] When the position of the armrest on the X-axis (parallel to the direction of the vehicle body) needs to be adjusted, the electromagnetic clutch 9 connected to the X-axis assembly 3 is energized, and the drive motor 2 pushes the X-axis top slide 27 to slide on the X-axis track 32 through the transmission of the first gear 8, the second gear 10, and the third gear 11, and the cooperation of the drive nut 37 and the first screw 12, thereby realizing the front and rear position adjustment of the armrest.

[0061] Y-axis assembly 4: When the position of the armrest on the Y-axis (perpendicular to the direction of the vehicle door) needs to be adjusted, the electromagnetic clutch 9 connected to the Y-axis assembly 4 is energized, and the drive motor 2 is driven through the fourth gear 15, the second worm 21, the second worm wheel 20, and the cooperation of the drive nut 37 and the third screw 22 to push the YZ-axis slide 29 to slide on the Y-axis track 33, thereby realizing the width position adjustment of the armrest.

[0062] Z-axis assembly 5: When the position of the armrest on the Z-axis (vertical direction) needs to be adjusted, the electromagnetic clutch 9 connected to the Z-axis assembly 5 is energized, and the drive motor 2 is driven by the first worm 16, the first worm gear 17, and the cooperation of the drive nut 37 and the second lead screw 18 to push the YZ-axis slide 29 together with the Z-axis track 34 thereon to move up and down, thereby realizing the height position adjustment of the armrest, and the Z-axis track 34 can slide up and down relative to the cross slider 35; while the YZ-axis slide 29 slides up and down, it drives the X-axis top slide 27 and the X-axis right slide 26, and the X-axis right slide 26 can slide up and down relative to the X-axis slide slot 28.

[0063] In summary, the present invention realizes flexible adjustment of the armrest in three dimensions through a set of precise mechanical transmission systems and the control of the electromagnetic clutch 9, which not only meets the personalized needs of passengers, but also improves the comfort and convenience of riding.

[0064] The electromagnetic clutch 9 and the control part are all made of existing finished parts, which are existing technologies, and their structures and principles are not described in detail.

[0065] The components in this article are all universal standard parts or components known to those skilled in the art. Their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods, so they will not be described in detail here.

[0066] Although the specific embodiments of the present invention are described in detail above, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by ordinary technicians in this field, various changes can be made without departing from the purpose of the present invention. Modifications or deformations that do not involve creative work are still within the scope of protection of the present invention.

Claims

1. An adjustable automatic armrest for automobile doors, characterized in that: include: An armrest housing (1) is arranged on the inner side of a vehicle door; An adjustment plate assembly (6) for moving the armrest housing (1) along the X, Y, and Z axes; A fixing assembly is installed on the vehicle door and is used to provide an installation position. The fixing assembly includes a base main board (23), a left base board (24) and a right base board (25). The left base board (24) and the right base board (25) are perpendicular to the base main board (23) and fixedly installed at the left and right ends of the base main board (23). The outer side surfaces of the left base board (24) and the right base board (25) are both fixedly installed with a Y-axis track (33) perpendicular to the base board; A drive motor (2) for providing power for adjusting the armrest; An X-axis assembly (3) is used to adjust the front and rear position of the armrest in a direction parallel to the vehicle body; A Y-axis assembly (4) is used to adjust the width position of the armrest in a direction perpendicular to the vehicle door; A Z-axis assembly (5) is used to adjust the height position of the armrest in the vertical direction; The drive motor (2), the X-axis assembly (3), the Y-axis assembly (4), and the Z-axis assembly (5) are all fixedly mounted on the base mainboard (23) via a support (39); The driving motor (2) outputs driving force through a driving wheel, which is respectively connected to the upper fourth gear (15) and the lower first gear (8) through teeth. The first gear (8) is connected to the X-axis assembly (3) through an electromagnetic clutch (9). The left and right sides of the fourth gear (15) are respectively connected to the Y-axis assembly (4) and the Z-axis assembly (5) through electromagnetic clutches (9). The electromagnetic clutch (9) can be opened and closed to enable the driving motor (2) to control the armrest to be adjusted individually or together in the X, Y, and Z directions.

2. The adjustable automobile door automatic armrest according to claim 1, characterized in that: The regulating plate assembly (6) includes an X-axis top slide plate (27), an X-axis right slide plate (26), and a YZ-axis slide plate (29): A bending plate is provided on the right side of the X-axis top slide plate (27), which is fixedly connected to the X-axis right slide plate (26) through the bending plate. The front and rear ends of the X-axis right slide plate (26) are provided with grooves, and an X-axis slider groove (28) is slidably installed in the groove. The X-axis slider groove (28) is arranged perpendicular to the direction of the vehicle door. The YZ-axis slide plate (29) comprises a horizontal straight plate and vertical plates integrally formed at both ends, an X-axis track (32) is horizontally installed on the top of the straight plate, a Z-axis track (34) is vertically installed on the inner side of the vertical plate, the X-axis top slide plate (27) is slidably connected to the X-axis track (32) through a guide shoe, a Y-axis slider groove (31) is vertically installed on the front of the straight plate of the YZ-axis slide plate (29), a Z-axis slider groove (30) is installed on the bottom of the straight plate of the YZ-axis slide plate (29), and the Z-axis slider groove (30) is set in a direction perpendicular to the vehicle door, and the X-axis slider groove (28), the Y-axis slider groove (31), and the Z-axis slider groove (30) are all used to avoid movement in other directions to avoid getting stuck.

3. The adjustable automatic door armrest for automobiles according to claim 2, characterized in that: The X-axis assembly (3) includes a second gear (10), a third gear (11), a first lead screw (12), an X-axis support seat (13), and a top slider (14). The second gear (10) is connected to the electromagnetic clutch (9) and is on the same axis. The third gear (11) is connected to the second gear (10) through teeth. A driving nut (37) is installed inside the third gear (11). The third gear (11) and the driving nut (37) are rotatably installed on the X-axis support seat (13) through a bearing (36). The X-axis support seat (13) is fixedly connected to the base main board (23). The driving nut (37) is internally threaded and connected to the first lead screw (12). The end of the first lead screw (12) is fixedly installed with a top slider (14). The top slider (14) is slidably installed in the X-axis slider groove (28). The first lead screw (12) pushes the X-axis top slider (27) to achieve front and rear position adjustment of the armrest.

4. The adjustable automatic door armrest for automobiles according to claim 2, characterized in that: The Y-axis assembly (4) includes a second worm gear (20), a second worm (21), and a third lead screw (22). The second worm (21) is connected to the electromagnetic clutch (9) and is on the same axis. The second worm gear (20) is connected to the second worm (21) by teeth. A driving nut (37) is installed in the second worm gear (20). The second worm gear (20) and the driving nut (37) are rotatably installed on the Y-axis support seat (38) through a bearing (36). The Y-axis support seat (38) is fixedly connected to the base main board (23). The driving nut (37) is internally threaded and connected to the third lead screw (22). A top slider (14) is fixedly installed at the end of the third lead screw (22). The top slider (14) is slidably installed in the Y-axis slider groove (31). The YZ-axis slide plate (29) is pushed by the third lead screw (22) to adjust the width position of the handrail.

5. The adjustable automatic door armrest for automobiles according to claim 2, characterized in that: The Z-axis assembly (5) comprises a first worm (16), a first worm wheel (17), a second lead screw (18), and a Z-axis support seat (19). The first worm (16) is connected to the electromagnetic clutch (9) and is on the same axis. The first worm wheel (17) is connected to the first worm (16) through teeth. A driving nut (37) is installed in the first worm wheel (17). The first worm wheel (17) and the driving nut (37) are rotatably installed on the Z-axis support seat (19) through a bearing (36). The Z-axis support seat (19) is fixedly connected to the base main board (23). The driving nut (37) is internally threaded and connected to the second lead screw (18). A top slider (14) is fixedly installed at the end of the second lead screw (18). The top slider (14) is slidably installed in the Z-axis slider groove (30). The second lead screw (18) pushes the YZ-axis slide plate (29) to adjust the height position of the handrail.

6. The adjustable automatic door armrest for automobiles according to claim 2, characterized in that: A cross slider (35) is mounted on the Y-axis track (33) and the Z-axis track (34). The cross slider (35) can slide along the Y-axis track (33) and the Z-axis track (34) respectively, so as to improve the stability of the YZ-axis slide plate (29) when it moves.

7. The adjustable automobile door automatic armrest according to claim 2, characterized in that: The Y-axis track (33) and the Z-axis track (34) are both symmetrically arranged in pairs.

8. The adjustable automatic door armrest for automobiles according to claim 2, characterized in that: A window controller (7) is installed on the right end surface of the X-axis right side slide (26), which is used to increase the overall length of the armrest and improve the comfort of use.

9. The adjustable automatic door armrest for automobile according to claim 2, characterized in that: The guide shoes of the X-axis top slide plate (27) are provided in two numbers to improve the sliding stability.

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