Mounting structure of automobile tail door motor

Abstract

The invention discloses a mounting structure of an automobile tail door motor, relates to the related field of motor mounting, and aims to solve the problem that a motor in the prior art is directly mounted in an outer sleeve and is inconvenient to maintain and replace independently. An isosceles trapezoid block is fixed at the upper end of the connecting column; side fixing seats are fixed to the rear end of the outer C-shaped fixing frame along the two sides of the isosceles trapezoid block, positioning fixing rods are slidably connected into the side fixing seats, right trapezoid blocks are fixed to the inner ends of the positioning fixing rods, and second pressure springs are arranged between the right trapezoid blocks and the side fixing seats along the outer portions of the positioning fixing rods. The telescopic assembly comprises a third rotating piece, the third rotating piece comprises two second cylindrical connecting parts and a second middle plate part integrally connected between the two second cylindrical connecting parts, and the front end of the second cylindrical connecting part at the front end is integrally connected with a rear fixing part. Limiting fixing holes matched with the positioning fixing rods in position are formed in the rear fixing part.

Description

Technical Field

[0001] This invention relates to the field of motor installation, specifically to an installation structure for a car tailgate motor. Background Technology

[0002] As a crucial component at the rear of a vehicle, the tailgate not only serves to seal the cargo compartment and protect the contents, but also directly impacts the vehicle's aesthetics and overall aerodynamic performance. With the segmentation of the automotive market and consumers' increasing demands for vehicle user experience, tailgate design is increasingly emphasizing automation and user-friendliness. Among these, electric tailgate systems have garnered widespread attention due to their ease of operation and ability to enhance the vehicle's perceived quality.

[0003] The electric tailgate system uses a motor to automatically open and close the tailgate, greatly improving user convenience, especially when carrying heavy items or in inclement weather, allowing for easy operation without manual effort. As one of the core components of the electric tailgate system, the installation structure of the tailgate motor directly affects the motor's operating efficiency, stability, and the overall reliability of the system.

[0004] In traditional designs, car tailgate motors are often installed using a direct mounting method. For example, Chinese patent CN223066941 U (A Tailgate Support Motor) describes a motor that slides along a support rod used to support the car tailgate. It includes a sleeve and a drive component housed inside the sleeve. The drive component is covered by a housing, and the inner wall of the sleeve is threaded. The drive component is connected to a rotating shaft rotatably connected to the housing. A drive flange, threaded to the sleeve, is fixedly fitted onto the rotating shaft. A first abutment plate is fixedly mounted at the bottom of the support rod, and a second abutment plate is fixedly mounted at the end of the rotating shaft away from the drive component. Both the first and second abutment plates are slidably connected to the sleeve. A first spring is axially mounted on the side of the second abutment plate closest to the first abutment plate. A limiting element is provided on the sleeve to prevent the support rod from detaching from the sleeve. This application simplifies the structure of the car tailgate support motor, saves power while ensuring that usage requirements are met, and improves the economic practicality of the car tailgate support motor.

[0005] Although the aforementioned existing technology has the function of stable motor installation and driving strut movement, the motor is directly installed inside the outer sleeve. When maintenance, repair or replacement is required, the entire tailgate strut assembly can basically only be replaced, making it inconvenient to repair or replace the motor separately. Summary of the Invention

[0006] The purpose of this invention is to provide an installation structure for a car tailgate motor, so as to solve the problem mentioned in the background art that the motor is directly installed in the outer sleeve, making it inconvenient to repair or replace the motor separately.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an installation structure for a car tailgate motor, comprising a drive box, an inner drive unit disposed within the drive box, the inner drive unit comprising an outer C-shaped fixing frame having a vertical limiting groove, an inner C-shaped sliding frame disposed within the outer C-shaped fixing frame and sliding along the vertical limiting groove, a rear fixing strip fixed at the middle of the rear end of the inner C-shaped sliding frame, a connecting post fixed at the upper end of the rear fixing strip along the rear end of the outer C-shaped fixing frame, an isosceles trapezoidal block fixed at the upper end of the connecting post; side fixing seats fixed at the rear end of the outer C-shaped fixing frame along both sides of the isosceles trapezoidal block, and sliding connections within the side fixing seats. A positioning and fixing rod is provided, and a right-angled trapezoidal block is fixed to the inner end of the positioning and fixing rod. The inclined surface of the right-angled trapezoidal block fits against the inclined surface of the isosceles trapezoidal block. A second pressure spring is provided between the right-angled trapezoidal block and the side fixing seat along the outside of the positioning and fixing rod. A telescopic assembly is provided at the rear end of the drive box. The telescopic assembly includes a third rotating component. The third rotating component includes two second cylindrical connecting parts and a second intermediate plate integrally connected between the two second cylindrical connecting parts. A rear fixing part is integrally connected to the front end of the second cylindrical connecting part. The rear fixing part is located outside the side fixing seat. A limiting fixing hole matching the position of the positioning and fixing rod is provided on the rear fixing part.

[0008] Preferably, the rear end face of the outer C-shaped fixing frame has a rectangular slot along the sliding trajectory of the rear fixing strip, and the rectangular slot extends to the upper end face of the outer C-shaped fixing frame; a pull rod is slidably connected to the inner side wall of the outer C-shaped fixing frame, a side pull plate is fixed to the outer side of the pull rod, an L-shaped channel is opened on the outer side of the side pull plate, a first pressure spring is installed between the side pull plate and the side wall of the outer C-shaped fixing frame along the outside of the pull rod, and a positioning and fixing hole matching the position of the pull rod is opened on the side wall of the inner C-shaped sliding frame.

[0009] Preferably, the telescopic assembly further includes two sets of first fixed seats and two sets of second fixed seats. Each set of first fixed seats has two units, and each set of second fixed seats has two units. The front end of the second columnar connecting part is located between the two first fixed seats in each set and is rotatably connected to the first fixed seat via a shaft. The upper and lower ends of the rear end of the second columnar connecting part are rotatably connected to a first rotating member and a second rotating member via a shaft.

[0010] Preferably, both the first rotating member and the second rotating member include two first cylindrical connecting parts and a first intermediate plate integrally connected between the two first cylindrical connecting parts. A fixing tube is fixed between the first cylindrical connecting parts at the upper rear end of the first rotating member and the first cylindrical connecting parts at the upper rear end of the second rotating member. The first cylindrical connecting parts at the upper rear end of the first rotating member, the first cylindrical connecting parts at the upper rear end of the second rotating member, and the fixing tube are located between each group of two second fixing seats and are rotatably connected to the second fixing seats via a shaft.

[0011] Preferably, a drive motor is fixed to the front end of the inner C-shaped sliding frame by screws, and an irregularly shaped drive rod is connected to the output shaft end of the drive motor; a third fixed seat is fixed to the front end of the inner wall of the drive box, and an intermediate rotating component is rotatably connected to the third fixed seat through a bearing, and an irregularly shaped hole groove matching the shape of the irregularly shaped drive rod is provided on the lower end face of the intermediate rotating component.

[0012] Preferably, a first bevel gear is fixed to the upper end of the intermediate rotating component, and two fourth fixed seats are obliquely arranged at the lower end of the upper wall of the drive box. A drive worm is rotatably connected between the two fourth fixed seats. The intermediate shaft of the drive worm passes through one of the fourth fixed seats and is connected to a second bevel gear. The second bevel gear is located at the front end of one side of the first bevel gear and meshes with the first bevel gear. A rotating worm wheel is rotatably connected to one side inside the drive box and meshes with the drive worm.

[0013] Preferably, an outer sleeve is welded and fixed to the upper end of the drive box, a limit rod is fixed to one side inside the outer sleeve, and a drive screw is rotatably connected to the other side inside the outer sleeve. The middle rod of the drive screw passes through the upper end face of the drive box and is connected to the rotating worm gear.

[0014] Preferably, the outer sleeve has a limiting sliding block inside, which is threadedly engaged with the drive screw. The limiting sliding block slides along the limiting rod. The limiting rod has a support rod inside, the lower end of which is fixed to the limiting sliding block, and the upper end of which passes through the upper surface of the outer sleeve and is welded to a first rotating ring.

[0015] Preferably, a lower fixing rod is fixed to the lower end of the drive box along the axial direction of the support rod, and a second rotating ring is welded and fixed to the lower end of the lower fixing rod.

[0016] Preferably, the second rotating ring is provided with an I-shaped sleeve inside and rotates around the central axis of the I-shaped sleeve. The two ends of the I-shaped sleeve are provided with mounting plates. The mounting plates are fixed to the I-shaped sleeve by fixing bolts. The lower ends of the two mounting plates are welded together to a fifth fixing seat.

[0017] Compared with the prior art, the beneficial effects of the present invention are: (1) In this invention, the special sliding and positioning design makes it easy to remove the drive motor from the drive box, which makes it easier for maintenance personnel to inspect the motor, repair or replace the wiring, and effectively improve maintenance efficiency.

[0018] (2) In this invention, the stability of the drive motor in the longitudinal and vertical positions is ensured by a variety of positioning and fixing devices, which enhances the stability of the entire installation structure.

[0019] (3) The positioning method for the vertical and longitudinal positions of the drive motor in this invention is simple. The upward movement of the drive motor achieves the matching of the irregular drive rod with the irregular hole groove in the middle rotating part. At the same time, the elastic action of the first pressure spring causes the pull rod to reset and insert into the positioning and fixing hole on the inner C-shaped sliding frame. The upward movement of the drive motor can drive the rear fixing bar, connecting column and isosceles trapezoidal block to move, so that the positioning and fixing rod is inserted into the limiting fixing hole of the rear fixing part on the third rotating part. That is, the upward movement of the drive motor achieves the matching of the drive structure and the positioning of the vertical and longitudinal positions of the drive motor. The operation is simple. Pulling the side pull plate outward can release the matching of the drive structure and the positioning of the vertical and longitudinal positions of the drive motor by moving the drive motor downward. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of an automobile tailgate motor mounting structure according to the present invention. Figure 2 This is a side view of the mounting structure of a car tailgate motor according to the present invention; Figure 3 This is a top view of the mounting structure of a car tailgate motor according to the present invention; Figure 4 This is a cross-sectional view at point AA of the mounting structure of a car tailgate motor according to the present invention. Figure 5 This is a cross-sectional view at point BB of a mounting structure for an automobile tailgate motor according to the present invention. Figure 6 This is a front structural schematic diagram of the inner drive unit of the mounting structure of a car tailgate motor according to the present invention. Figure 7 This is a schematic diagram of the reverse structure of the inner drive unit of the mounting structure of a car tailgate motor according to the present invention. Figure 8 This is a schematic diagram of the telescopic component of the mounting structure for an automobile tailgate motor according to the present invention.

[0021] In the diagram: 1. Drive box; 2. Inner drive unit; 3. Outer C-shaped fixing frame; 4. Limiting slide groove; 5. Inner C-shaped sliding frame; 6. Drive motor; 7. Side pull plate; 8. L-shaped channel; 9. Pull rod; 10. First pressure spring; 11. Positioning fixing hole; 12. Irregularly shaped drive rod; 13. Rear fixing strip; 14. Connecting column; 15. Isosceles trapezoidal block; 16. Rectangular slot; 17. Side fixing seat; 18. Right-angled trapezoidal block; 19. Positioning fixing rod; 20. Second pressure spring; 21. First fixing seat; 22. Second fixing seat; 23. Telescopic assembly; 24. First rotating component; 25. Second rotating component; 26. First intermediate plate; 7. First cylindrical connecting part; 28. Fixed tube; 29. ​​Third rotating component; 30. Second intermediate plate part; 31. Second cylindrical connecting part; 32. Rear fixed part; 33. Limiting and fixing hole; 34. Third fixed seat; 35. Intermediate rotating component; 36. First bevel gear; 37. Fourth fixed seat; 38. Second bevel gear; 39. Drive worm gear; 40. Rotating worm wheel; 41. Outer sleeve; 42. Drive screw; 43. Limiting rod; 44. Limiting sliding block; 45. Support rod; 46. First rotating ring; 47. Lower fixed rod; 48. Second rotating ring; 49. Mounting plate; 50. Fifth fixed seat; 51. I-shaped sleeve; 52. Fixing bolt. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0023] Please see Figures 1-8 This invention provides an embodiment of an installation structure for a car tailgate motor, comprising a drive box 1, which serves as the main body of the entire installation structure, providing installation space and protection for the internal components. An inner drive unit 2 is disposed within the drive box 1, and the inner drive unit 2 includes an outer C-shaped fixing frame 3, on which a vertical limiting groove 4 is provided. An inner C-shaped sliding frame 5 is disposed within the outer C-shaped fixing frame 3 and can slide along the vertical limiting groove 4. A drive motor 6 is fixed to the front end of the inner C-shaped sliding frame 5 by screws, and an irregularly shaped drive rod 12 is connected to the output shaft end of the drive motor 6. A rear fixing strip 13 is fixed to the middle of the rear end of the inner C-shaped sliding frame 5, and a connecting post 14 is fixed to the upper end of the rear fixing strip 13 along the rear end of the outer C-shaped fixing frame 3. An isosceles trapezoidal block 15 is fixed to the upper end of the connecting post 14. A rectangular slot 16 is provided on the rear end face of the outer C-shaped fixing frame 3 along the sliding trajectory of the rear fixing strip 13. The rectangular slot 16 extends to the upper end face of the outer C-shaped fixing frame 3. This slot design facilitates the sliding of the rear fixing strip 13 and related components.

[0024] A side fixing seat 17 is fixed to both sides of the isosceles trapezoidal block 15 at the rear end of the outer C-shaped fixing frame 3. A positioning fixing rod 19 is slidably connected inside the side fixing seat 17. A right-angled trapezoidal block 18 is fixed to the inner end of the positioning fixing rod 19, and the inclined surface of the right-angled trapezoidal block 18 is in contact with the inclined surface of the isosceles trapezoidal block 15. A second pressure spring 20 is provided between the right-angled trapezoidal block 18 and the side fixing seat 17 along the outside of the positioning fixing rod 19. The second pressure spring 20 enables the right-angled trapezoidal block 18 to move accordingly when the isosceles trapezoidal block 15 moves, thereby realizing the insertion and disengagement of the positioning fixing rod 19.

[0025] A pull rod 9 is slidably connected to the inner side wall of the outer C-shaped fixed frame 3. A side pull plate 7 is fixed to the outer side of the pull rod 9. An L-shaped channel 8 is opened on the outer side of the side pull plate 7. A first pressure spring 10 is installed between the side pull plate 7 and the side wall of the outer C-shaped fixed frame 3 along the outside of the pull rod 9. A positioning and fixing hole 11 matching the position of the pull rod 9 is opened on the side wall of the inner C-shaped sliding frame 5. When it is necessary to release the vertical fixation of the drive motor 6, a finger is inserted into the L-shaped channel 8 of the side pull plate 7 and pulled outward, causing the pull rod 9 to disengage from the positioning and fixing hole 11. The first pressure spring 10 provides elastic force when the pull rod 9 returns to its original position, so that the pull rod 9 can be accurately inserted into the positioning and fixing hole 11, which can quickly realize the fixation and release of the vertical position of the drive motor 6.

[0026] The drive housing 1 has a telescopic assembly 23 located at its rear end. The telescopic assembly 23 includes a third rotating member 29, which comprises two second cylindrical connecting parts 31 and a second intermediate plate 30 integrally connected between the two second cylindrical connecting parts 31. A rear fixing part 32 is integrally connected to the front end of the front second cylindrical connecting parts 31. The rear fixing part 32 is located outside the side fixing seat 17 and has a limiting fixing hole 33 that matches the position of the positioning fixing rod 19. The telescopic assembly 23 also includes two sets of first fixing seats 21 and two sets of second fixing seats 22, with two first fixing seats 21 and two second fixing seats 22 in each set. The front second cylindrical connecting parts 31 are located between the two first fixing seats 21 in each set and are rotatably connected to the first fixing seats 21 via a shaft. The upper and lower ends of the rear second cylindrical connecting parts 31 are rotatably connected to a first rotating member 24 and a second rotating member 25 via a shaft. This multi-rotating member connection design gives the telescopic assembly 23 better flexibility and adjustability. The first rotating member 24 and the second rotating member 25 each include two first cylindrical connecting portions 27 and a first intermediate plate portion 26 integrally connected between the two first cylindrical connecting portions 27. A fixing tube 28 is fixed between the first cylindrical connecting portions 27 at the upper rear end of the first rotating member 24 and the first cylindrical connecting portions 27 at the upper rear end of the second rotating member 25. The first cylindrical connecting portions 27 at the upper rear end of the first rotating member 24, the first cylindrical connecting portions 27 at the upper rear end of the second rotating member 25, and the fixing tube 28 are located between each set of two second fixing seats 22 and are rotatably connected to the second fixing seats 22 via a shaft.

[0027] A third fixed seat 34 is fixed to the front end of the inner wall of the drive housing 1. An intermediate rotating component 35 is rotatably connected to the third fixed seat 34 via a bearing. The lower end face of the intermediate rotating component 35 has a shaped slot that matches the shape of the shaped drive rod 12. When the drive motor 6 operates, it drives the shaped drive rod 12 to rotate. Because the shaped drive rod 12 matches the shaped slot in the intermediate rotating component 35, it drives the intermediate rotating component 35 to rotate. This design of the shaped drive rod 12 and the shaped slot enables power transmission.

[0028] A first bevel gear 36 is fixed to the upper end of the intermediate rotating component 35. Two fourth fixed seats 37 are obliquely arranged at the lower end of the upper wall of the drive housing 1. A drive worm 39 is rotatably connected between the two fourth fixed seats 37. The intermediate shaft of the drive worm 39 passes through one of the fourth fixed seats 37 and is connected to a second bevel gear 38. The second bevel gear 38 is located at the front end of one side of the first bevel gear 36 and meshes with the first bevel gear 36. The rotation of the intermediate rotating component 35 drives the first bevel gear 36 to rotate. Through the meshing connection between the first bevel gear 36 and the second bevel gear 38, the drive worm 39 connected to the second bevel gear 38 is driven to rotate.

[0029] A rotating worm gear 40 is rotatably connected to one side of the drive housing 1, and the rotating worm gear 40 is meshed with the drive worm 39. The rotation of the drive worm 39, through its meshing connection with the rotating worm gear 40, drives the drive screw 42, which is connected to the rotating worm gear 40, to rotate. The worm gear transmission has a self-locking function, which prevents the drive screw 42 from rotating in the opposite direction when under force, ensuring the stability of the car tailgate during opening and closing.

[0030] An outer sleeve 41 is welded and fixed to the upper end of the drive housing 1. A limit rod 43 is fixed to one side inside the outer sleeve 41, and a drive screw 42 is rotatably connected to the other side inside the outer sleeve 41. The middle rod of the drive screw 42 passes through the upper end face of the drive housing 1 and is connected to the rotating worm gear 40. The outer sleeve 41 provides installation space and protection for the internal components.

[0031] The outer sleeve 41 has a limiting sliding block 44 internally connected to a limiting sliding block 44. The limiting sliding block 44 is threadedly engaged with the drive screw 42. The limiting rod 43 limits the movement of the limiting sliding block 44, ensuring that the limiting sliding block 44 moves in a straight line and improving the accuracy and stability of its movement. When the drive screw 42 rotates, due to the threaded engagement between the limiting sliding block 44 and the drive screw 42, as well as the limiting effect of the limiting rod 43, the limiting sliding block 44 moves upward along the inner side of the outer sleeve 41 and the outer side of the limiting rod 43.

[0032] A support rod 45 is slidably connected inside the limiting rod 43. The lower end of the support rod 45 is fixed to the limiting sliding block 44, and the upper end of the support rod 45 passes through the upper surface of the outer sleeve 41 and is welded and fixed to a first rotating ring 46. The upward movement of the limiting sliding block 44 causes the support rod 45 connected to the limiting sliding block 44 to move outward. The support rod 45 is rotatably connected to the tailgate of the car through the first rotating ring 46. This rotatable connection allows the support rod 45 to adapt to the movement angle of the tailgate when pushing it, improving the smoothness of opening and closing the tailgate.

[0033] A lower fixing rod 47 is fixed to the lower end of the drive box 1 along the axial direction of the support rod 45. A second rotating ring 48 is welded to the lower end of the lower fixing rod 47. An I-shaped sleeve 51 is provided inside the second rotating ring 48 and rotates around the central axis of the I-shaped sleeve 51. Mounting plates 49 are provided at both ends of the I-shaped sleeve 51. The mounting plates 49 and the I-shaped sleeve 51 are fixed by fixing bolts 52. A fifth fixing seat 50 is welded to the lower ends of the two mounting plates 49. The lower fixing rod 47 is rotatably connected to the mounting plates 49 and the fifth fixing seat 50 fixed on the vehicle through the second rotating ring 48. When the support rod 45 is extended, the rotational connection between the support rod 45 and the tailgate of the car, as well as the rotational connection between the lower fixing rod 47 and the mounting plates 49 and the fifth fixing seat 50, pushes the tailgate of the car to open. When the drive motor 6 drives the irregularly shaped drive rod 12 to rotate in the opposite direction, the support rod 45 retracts inward and pulls the tailgate of the car to close.

[0034] When maintenance is required, open the inspection door at the front of the drive box 1, and pull the side pull plate 7 as described above to release the vertical fixation of the drive motor 6. The inner C-shaped sliding frame 5 and the drive motor 6 slide along the outer C-shaped fixed frame 3, driving the rear fixing strip 13, connecting column 14, and isosceles trapezoidal block 15 to move. Since the isosceles trapezoidal block 15 and right-angled trapezoidal block 18 are fitted together by the pressure of the second pressure spring 20, when the isosceles trapezoidal block 15 moves, under the action of the second pressure spring 20, the right-angled trapezoidal block 18 moves towards the center, causing the positioning fixing rod 19 to gradually disengage from the upper limit fixing hole 33 of the rear fixing part 32. At this time, the rotational freedom of the first rotating part 24, the second rotating part 25, and the third rotating part 29 is unrestricted, and the inner drive unit 2 is pulled outward to move the drive motor 6 to the outer end of the drive box 1, allowing for inspection, wiring repair, or replacement of the drive motor 6.

[0035] When a reset is required, the drive motor 6 is pushed to move the inner drive unit 2, causing the first rotating component 24, the second rotating component 25, and the third rotating component 29 to rotate and fold until the irregularly shaped drive rod 12 moves to the lower end of the middle rotating component 35. The inner C-shaped sliding frame 5 and the drive motor 6 are pushed upwards. When the positioning and fixing hole 11 on the inner C-shaped sliding frame 5 corresponds to the left and right positions of the pull rod 9, under the elastic action of the first pressure spring 10, the pull rod 9 resets and inserts into the positioning and fixing hole 11 on the inner C-shaped sliding frame 5, fixing the vertical position of the drive motor 6. When the inner C-shaped sliding frame 5 and the drive motor 6 move upwards, the rear fixing bar 13, the connecting column 14, and the isosceles trapezoidal block 15 move upwards synchronously. The isosceles trapezoidal block 15 squeezes the two right-angled trapezoidal blocks 18 outwards, compressing the second pressure spring 20. The movement of the right-angled trapezoidal block 18 drives the positioning and fixing rod 19 to move outward synchronously and insert into the limiting and fixing hole 33 of the rear fixing part 32 on the third rotating part 29, thereby restricting the rotation of the third rotating part 29, thereby restricting the rotation of the first rotating part 24 and the second rotating part 25, and fixing the longitudinal position of the drive motor 6.

[0036] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A mounting structure of an automobile tail gate motor including a drive case (1), characterized by: The driving box (1) is provided with an inner driving unit (2), the inner driving unit (2) includes an outer C-shaped fixed frame (3) provided with a vertical limiting sliding groove (4), the outer C-shaped fixed frame (3) is provided with an inner C-shaped sliding frame (5) which is limited to slide along the vertical limiting sliding groove (4), the rear end of the inner C-shaped sliding frame (5) is fixedly provided with a rear fixed strip (13), the upper end of the rear fixed strip (13) is fixedly provided with a connecting column (14) along the rear end of the outer C-shaped fixed frame (3), and the upper end of the connecting column (14) is fixedly provided with an isosceles trapezoidal block (15); the rear end of the outer C-shaped fixed frame (3) is fixedly provided with a side fixed seat (17) along the two sides of the isosceles trapezoidal block (15), the side fixed seat (17) is slidably connected with a positioning fixed rod (19), the inner end of the positioning fixed rod (19) is fixedly provided with a right trapezoidal block (18), the inclined surface of the right trapezoidal block (18) is attached to the inclined surface of the isosceles trapezoidal block (15), and a second pressure spring (20) is arranged between the right trapezoidal block (18) and the side fixed seat (17) along the outside of the positioning fixed rod (19); the rear end of the driving box (1) is provided with a telescopic assembly (23), the telescopic assembly (23) includes a third rotating piece (29), the third rotating piece (29) includes two second columnar connecting parts (31) and a second intermediate plate part (30) integrally connected between the two second columnar connecting parts (31), a rear fixed part (32) is integrally connected to the front end of the second columnar connecting part (31), the rear fixed part (32) is located outside the side fixed seat (17), and a limiting fixed hole (33) matched with the position of the positioning fixed rod (19) is formed in the rear fixed part (32).

2. The mounting structure of a motor for a tailgate of an automobile according to claim 1, characterized in that: The rear end surface of the outer C-shaped fixed frame (3) is provided with a rectangular slot (16) along the sliding track of the rear fixed strip (13), and the rectangular slot (16) extends to the upper end surface of the outer C-shaped fixed frame (3); the inner wall of the outer C-shaped fixed frame (3) is slidably connected with a pull rod (9), the outer side of the pull rod (9) is fixedly provided with a side pull disc (7), an L-shaped hole (8) is formed in the outer side surface of the side pull disc (7), a first pressure spring (10) is installed between the side pull disc (7) and the inner wall of the outer C-shaped fixed frame (3) along the outside of the pull rod (9), and a positioning fixed hole (11) matched with the position of the pull rod (9) is formed in the side wall of the inner C-shaped sliding frame (5).

3. The mounting structure of a motor for a tailgate of an automobile according to claim 1, characterized in that: The telescopic assembly (23) further includes two groups of first fixed seats (21) and two groups of second fixed seats (22), each group of the first fixed seats (21) is provided with two, each group of the second fixed seats (22) is provided with two, the front end of the second columnar connecting part (31) is located between the two first fixed seats (21) of each group and is connected with the first fixed seat (21) through shaft rotation, and the upper and lower ends of the rear end of the second columnar connecting part (31) are connected with a first rotating piece (24) and a second rotating piece (25) through shaft rotation.

4. The mounting structure for a motor of a tailgate of an automobile according to claim 3, characterized in that: The first rotating part (24) and the second rotating part (25) each comprise two first cylindrical connecting parts (27) and a first intermediate plate part (26) integrally connected between the two first cylindrical connecting parts (27), a fixed tube (28) is fixed between the first cylindrical connecting part (27) at the rear end of the first rotating part (24) and the first cylindrical connecting part (27) at the rear end of the second rotating part (25), and the first cylindrical connecting part (27) at the rear end of the first rotating part (24), the first cylindrical connecting part (27) at the rear end of the second rotating part (25) and the fixed tube (28) are located between every two second fixed seats (22) and are connected with the second fixed seats (22) through shaft rotation.

5. The mounting structure of a motor for a tailgate of an automobile according to claim 1, characterized in that: The front end of the inner C-shaped sliding frame (5) is fixed with a driving motor (6) through a screw, and the output shaft end of the driving motor (6) is connected with a special-shaped driving rod (12); the front end of the inner wall of the driving box (1) is fixed with a third fixed seat (34), and the third fixed seat (34) is rotatably connected with an intermediate rotating part (35) through a bearing, and the lower end face of the intermediate rotating part (35) is provided with a special-shaped hole and groove matched with the special-shaped driving rod (12).

6. The mounting structure of a motor for a tailgate of an automobile according to claim 5, characterized in that: The upper end of the intermediate rotating part (35) is fixed with a first bevel gear (36), the lower end of the upper wall of the driving box (1) is obliquely provided with two fourth fixed seats (37), a driving worm (39) is rotatably connected between the two fourth fixed seats (37), the middle shaft of the driving worm (39) penetrates through one of the fourth fixed seats (37) and is connected with a second bevel gear (38), the second bevel gear (38) is located at the front end of one side of the first bevel gear (36) and is meshingly connected with the first bevel gear (36), and a rotating worm wheel (40) is rotatably connected to one side of the inside of the driving box (1) and is meshingly connected with the driving worm (39).

7. The mounting structure of a motor for a tailgate of an automobile according to claim 6, characterized in that: The upper end of the driving box (1) is welded and fixed with an outer sleeve (41), one side of the inside of the outer sleeve (41) is fixed with a limiting rod (43), the other side of the inside of the outer sleeve (41) is rotatably connected with a driving screw rod (42), and the middle rod of the driving screw rod (42) penetrates through the upper end face of the driving box (1) and is connected with the rotating worm wheel (40).

8. The mounting structure of a motor for a tailgate of an automobile according to claim 7, characterized in that: The inside of the outer sleeve (41) is limitingly and slidingly connected with a limiting sliding block (44), the limiting sliding block (44) is engaged with the driving screw rod (42) through threads, the limiting sliding block (44) is limitingly and slidingly connected along the limiting rod (43), the inside of the limiting rod (43) is slidingly connected with a supporting rod (45), the lower end of the supporting rod (45) is fixed with the limiting sliding block (44), and the upper end of the supporting rod (45) penetrates through the upper end face of the outer sleeve (41) and is welded and fixed with a first rotating ring (46).

9. The mounting structure of a motor for a tailgate of an automobile according to claim 8, characterized in that: The lower end of the driving box (1) is fixed with a lower fixed rod (47) in the axial direction of the supporting rod (45), and the lower end of the lower fixed rod (47) is welded and fixed with a second rotating ring (48).

10. The mounting structure of a motor for a tailgate of an automobile according to claim 9, characterized in that: The second rotating ring (48) is internally provided with an I-shaped sleeve (51) and rotates around the middle shaft of the I-shaped sleeve (51) as the axis, two ends of the I-shaped sleeve (51) are provided with mounting plates (49), the mounting plates (49) are fixed with the I-shaped sleeve (51) through fixing bolts (52), and the lower ends of the two mounting plates (49) are commonly welded and fixed with a fifth fixing base (50).

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