One-driving-two automobile tailboard lifting power mechanism

Abstract

The utility model provides a one-driving-two automobile tailboard lifting power mechanism, and belongs to the technical field of automobile auxiliary parts. The power mechanism is arranged between the two push rods, the motor of the power mechanism is in power connection with the reduction gearbox of the double-end output shaft, the double-end output shaft of the reduction gearbox of the double-end output shaft is connected with the rotating shafts respectively, and the rotating shafts extend towards the two push rods respectively. The two rotating shafts are in power connection with the input shafts of the push rods on the corresponding sides through couplings respectively, so that the motor in the power mechanism can drive the two push rods to move synchronously at the same time, the structure is simple, arrangement is easy, assembly and maintenance are convenient, manufacturing and using cost is reduced, and the purpose that the same motor drives the two push rods to move synchronously at the same time can be achieved. The motion synchronism of the two push rods is improved, so that the stability and reliability of the tail plate of the electric automobile are guaranteed, the use performance is better, and popularization and use of the tail plate of the electric automobile are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile auxiliary parts, in particular to a one - to - two automobile tailgate lifting power mechanism. Background Art

[0002] As an auxiliary structure for loading and unloading goods on an automobile, the automobile tailgate can reduce the cost of manual loading and unloading, and improve the loading and unloading efficiency and safety. Moreover, with the rapid development of the logistics industry in China, the demand for installing tailgates on vehicles is also increasing continuously.

[0003] Currently, most automobile tailgates on the market are driven by a hydraulic system. Since the hydraulic system uses hydraulic oil as the driving medium, not only is it necessary to lay pipes, and the structure is complex and messy, which is not conducive to later maintenance, but also there are problems such as "running", "leaking", "dripping", "oozing", and freezing of oil at low temperatures, which affect the service life of the automobile tailgate. Although electric push rods have gradually been used as the driving structure of automobile tailgates on the market, such as a fully - electrified automobile tailgate disclosed in patent CN201911231055.2, its electric actuation system uses 2 lifting electric cylinders and 2 flipping electric cylinders. The electric cylinders are in the form of a DC motor and a T - shaped lead screw. During installation, one of each type of electric cylinder is symmetrically arranged on the left and right, and is connected to the cross - beam support and the hinge hole of the flat plate through a connecting ear. It can be seen from this that in the existing automobile tailgates using electric push rods as the power system, each electric push rod is independently equipped with a power motor, and at the same time, a set of reduction mechanism also needs to be independently configured, resulting in an increase in its manufacturing and maintenance costs. In addition, during use, in order to ensure the balance and stability of the movement of the automobile tailgate, the synchronism of the two electric push rods in a pair during lifting needs to be relatively good, which is difficult to achieve. Even if a real - time regulation structure needs to be configured to control the actions of the two electric push rods to improve synchronism, it will still lead to a complex structure, problems in assembly and maintenance, and higher manufacturing and use costs, which is not conducive to the popularization and use of electric - vehicle tailgates. Summary of the Invention

[0004] Aiming at the above problems existing in the prior art, the present invention aims to provide a one - to - two automobile tailgate lifting power mechanism, which sets a set of power mechanism and acts on two push rods at the same time, achieving the purpose of simultaneously driving the two push rods to move synchronously by the same power mechanism. It can not only reduce the structural layout, make the structure simpler, be conducive to assembly and maintenance, reduce manufacturing and use costs, but also improve the synchronism of the actions of the two push rods, ensure the use performance of the electric - vehicle tailgate, and be conducive to the popularization and use of the electric - vehicle tailgate.

[0005] The specific technical solutions are as follows:

[0006] A one-drive-two vehicle tailgate lifting power mechanism, having the following characteristics, includes two push rods with input shafts and a power mechanism. And the power mechanism includes a motor, a reduction gearbox, two rotating shafts, and two couplings. The motor is arranged between the two push rods. The input shaft of the reduction gearbox is power-connected to the output shaft of the motor. The reduction gearbox has a double-headed output shaft that extends towards the two push rods respectively. And a rotating shaft is power-connected to each of the double-headed output shafts of the reduction gearbox. At the same time, the other ends of the two rotating shafts are respectively power-connected to the input shafts of the two push rods through couplings. And the housing of the motor or the reduction gearbox in the power mechanism is fixed to the housing of the two push rods through an extension part.

[0007] In the above-mentioned one-drive-two vehicle tailgate lifting power mechanism, the reduction gearbox includes a reduction housing, a reduction output shaft, a bevel gear assembly, and a first bearing. The reduction housing is installed on the motor. The reduction output shaft is horizontally arranged in the reduction housing and extends out from both sides of the reduction housing at both ends. First bearings are arranged between both ends of the reduction output shaft and the reduction housing. The output shaft of the motor extends into the reduction housing. The large bevel gear of the bevel gear assembly is installed on the reduction output shaft. The small bevel gear of the bevel gear assembly is installed on the output shaft of the motor and meshes with the large bevel gear.

[0008] In the above-mentioned one-drive-two vehicle tailgate lifting power mechanism, connection sleeves are arranged at both ends of the reduction output shaft. One end of the connection sleeve is sleeved on the reduction output shaft. The other end of the connection sleeve is provided with a polygonal hole. The shape of the cross-section of the rotating shaft is the same as the shape of the polygonal hole.

[0009] In the above-mentioned one-drive-two vehicle tailgate lifting power mechanism, the large bevel gear is key-connected to the reduction output shaft. And shaft sleeves are arranged on both sides of the large bevel gear. And the two shaft sleeves respectively abut against the two first bearings.

[0010] In the above-mentioned one-drive-two vehicle tailgate lifting power mechanism, bearing installation grooves are symmetrically arranged on the reduction housing. A limiting step is arranged on the side of the bearing installation groove facing away from each other. At the same time, chutes are opened on both sides of the reduction housing located opposite to the bearing installation grooves. A snap ring is arranged in each chute. The two first bearings are respectively arranged in the two bearing installation grooves. And both sides of each first bearing respectively abut against the limiting step and the snap ring of the corresponding bearing installation groove.

[0011] In the above-mentioned one-drive-two vehicle tailgate lifting power mechanism, oil seals are arranged on both sides of the reduction housing where the two first bearings are located on the opposite side.

[0012] In the above-mentioned one-drive-two vehicle tailgate lifting power mechanism, each push rod includes a lifting part and a power input part. And,

[0013] The lifting part includes an inner tube, an outer tube and a lead screw pair. The outer tube is sleeved outside the inner tube, and the inner tube is arranged to slide relative to the outer tube. The lead screw pair is installed in the inner tube, and the nut of the lead screw pair is connected to the inner tube. One end of the lead screw of the lead screw pair extends into the power input part;

[0014] The power input part includes a power box, a power input shaft, an input bevel gear, a transmission bevel gear, a transmission shaft, a reduction gear set, a second bearing and a third bearing. The power box is fixedly connected to the outer tube. The power input shaft is rotatably installed on the power box through the second bearing. One end of the power input shaft is located outside the power box and is connected to a coupling. An input bevel gear is arranged at the other end of the power input shaft. The transmission shaft is rotatably installed in the power box through the third bearing. A transmission bevel gear is sleeved on the transmission shaft and meshes with the input bevel gear. And a reduction gear set is arranged between the transmission shaft and the end of the lead screw extending into the power input part.

[0015] In the above-mentioned one-to-two vehicle tailgate lifting power mechanism, on both sides of the power box, two input shaft mounting holes are symmetrically opened, and the two input shaft mounting holes are coaxially arranged. One end of the power input shaft connected to the coupling extends out from one output shaft mounting hole.

[0016] The positive effects of the above technical solution are:

[0017] In the above-mentioned one-to-two vehicle tailgate lifting power mechanism, by arranging a motor and a reduction box between the two push rods, and the reduction box is a reduction box with double output shafts and is respectively connected to the couplings on the input shafts of the push rods on both sides through rotating shafts, one motor can drive the two push rods to act simultaneously and synchronously. The structure is simple, the structural arrangement is reduced, which is beneficial to the overall assembly and maintenance, and thus effectively reduces the manufacturing and use costs. In addition, by driving the two push rods to act simultaneously and synchronously by the same motor, the synchronism of the actions of the two push rods can be improved, thereby ensuring the use performance of the electric vehicle tailgate and being beneficial to the popularization and use of the electric vehicle tailgate. Description of the Drawings

[0018] Figure 1 It is a structural diagram of an embodiment of a one-to-two vehicle tailgate lifting power mechanism of the present invention;

[0019] Figure 2 It is a structural diagram of the power mechanism of a preferred embodiment of the present invention;

[0020] Figure 3 It is a cross-sectional view of the motor and the reduction box of a preferred embodiment of the present invention;

[0021] Figure 4 It is a structural diagram of the push rod of a preferred embodiment of the present invention;

[0022] Figure 5 It is a cross-sectional view of the power input part of a preferred embodiment of the present invention;

[0023] Figure 6 This is a structural diagram of the power box of a preferred embodiment of the present utility model.

[0024] In the accompanying drawings: 1. Push rod; 11. Lifting part; 12. Power input part; 111. Inner tube; 112. Outer tube; 121. Power box; 122. Power input shaft; 123. Input bevel gear; 124. Driving bevel gear; 125. Transmission shaft; 126. Reduction gear set; 127. Second bearing; 128. Third bearing; 1211. Input shaft mounting hole; 2. Power mechanism; 21. Motor; 22. Reducing box; 23. Rotating shaft; 24. Coupling; 221. Reducing housing; 222. Reducing output shaft; 223. Bevel gear assembly; 224. First bearing; 225. Connecting sleeve; 226. Bush; 2211. Bearing mounting groove; 2212. Limiting step; 2213. Card slot; 2214. Snap ring; 2215. Oil seal; 2251. Polygonal hole. Detailed implementation manners

[0025] In order to make the technical means, creative features, achieved purposes and functions realized by the present utility model easy to understand, the following embodiments are combined with the attached Figure 1 to the attached Figure 6 to specifically illustrate the technical solutions provided by the present utility model, but the following content is not a limitation of the present utility model.

[0026] Figure 1 This is a structural diagram of an embodiment of a one - to - two vehicle tailgate lifting power mechanism of the present utility model; Figure 2 This is a structural diagram of the power mechanism of a preferred embodiment of the present utility model. As Figure 1 and Figure 2 shown, the one - to - two vehicle tailgate lifting power mechanism provided in this embodiment includes two push rods 1 with input shafts and a power mechanism 2. At this time, the input shafts of the two push rods 1 are arranged oppositely, providing conditions for the subsequent connection of the two push rods 1 to the power mechanism 2 located between them.

[0027] Specifically, the power mechanism 2 further includes a motor 21, a reduction gearbox 22, two rotating shafts 23, and two couplings 24. At this time, the motor 21 is installed between the two push rods 1, providing conditions for driving the two push rods 1 to act simultaneously subsequently. In addition, the input shaft of the reduction gearbox 22 is power-connected to the output shaft of the motor 21, enabling speed reduction through the reduction gearbox 22. At the same time, the reduction gearbox 22 selected is a reduction gearbox 22 with double output shafts, and the two output shafts of the reduction gearbox 22 extend towards the two push rods 1 respectively, realizing that the two output shafts of the same reduction gearbox 22 can act on the two push rods 1 respectively subsequently. Moreover, one rotating shaft 23 is power-connected to each of the double output shafts of the reduction gearbox 22. At the same time, the other ends of the two rotating shafts 23 are respectively power-connected to the input shafts of the two push rods 1 through the couplings 24, that is, the power connection between the output shafts of the reduction gearbox 22 and the input shafts of the two push rods 1 is realized through the rotating shafts 23 and the couplings 24, enabling the motor 21 to drive the two push rods 1 to act simultaneously and synchronously through the reduction gearbox 22, the rotating shafts 23, and the couplings 24. Not only is the structure simple, the structure layout is more convenient, which is conducive to overall assembly and maintenance, effectively reducing the manufacturing and use costs. In addition, it can also ensure the synchronism of the actions of the two push rods 1, ensuring the stability and reliability of the electric vehicle tailgate, improving the use performance of the electric vehicle tailgate, and facilitating the popularization and use of the electric vehicle tailgate. In addition, the housing of the motor or the reduction gearbox of the power mechanism is fixed to the housing of the two push rods through the extension part, realizing the relative rest between the housing of the motor or the reduction gearbox and other related structures in the power mechanism and the housing of the push rods, thus avoiding the problem of self-rotation of the motor or the reduction gearbox and other related structures in the power mechanism during use and ensuring the power output.

[0028] Figure 3 is a cross-sectional view of the motor and the reduction gearbox of a preferred embodiment of the present invention. As Figures 1 to 3As shown in the figure, the speed reducer 22 connected to the motor 21 further includes a speed reducer housing 221, a speed reducer output shaft 222, a bevel gear assembly 223, and a first bearing 224. The speed reducer housing 221 is installed on the motor 21. Preferably, the speed reducer housing 221 is connected to the outer shell of the motor 21, realizing an integrated arrangement of the motor 21 and the speed reducer 22, with better integrity. At the same time, the speed reducer output shaft 222 is horizontally placed in the speed reducer housing 221 and both ends extend out from both sides of the speed reducer housing 221, forming a double-headed structure through both ends of the speed reducer output shaft 222 to be respectively connected to the two rotating shafts 23. In addition, first bearings 224 are provided between both ends of the speed reducer output shaft 222 and the speed reducer housing 221, and the support of the speed reducer output shaft 222 on the speed reducer housing 221 is realized through the first bearings 224. At the same time, the output shaft of the motor 21 extends into the speed reducer housing 221, and the large bevel gear of the bevel gear assembly 223 is installed on the speed reducer output shaft 222. The small bevel gear of the bevel gear assembly 223 is installed on the output shaft of the motor 21 and meshes with the large bevel gear, enabling the output shaft of the motor 21 to transmit power to the speed reducer output shaft 222 through the large bevel gear and the small bevel gear of the bevel gear assembly 223, which can not only meet the transmission requirements but also change the power transmission direction, providing conditions for subsequent connection to the input shafts of the two push rods 1 through the rotating shafts 23 respectively.

[0029] More specifically, connection sleeves 225 are provided at both ends of the speed reducer output shaft 222. During installation, one end of the connection sleeve 225 is sleeved on the speed reducer output shaft 222, realizing the installation of the connection sleeve 225 at both ends of the speed reducer output shaft 222. At the same time, polygonal holes 2251 are opened at the other end of each connection sleeve 225, and the shape of the cross-section of the rotating shaft 23 is the same as the shape of the polygonal hole 2251. When connecting the rotating shaft 23 and the speed reducer output shaft 222 subsequently, the connection and circumferential limit can be realized by inserting the end of the rotating shaft 23 into the polygonal hole 2251, realizing the quick connection of the speed reducer output shaft 222 and the rotating shaft 23. It should be noted that through holes are radially opened at both ends of the connection sleeve 225, and a limit pin is provided in each through hole. Corresponding insertion holes are opened on the end of the speed reducer output shaft 222 and the rotating shaft 23. When the two ends of the connection sleeve 225 are respectively connected to the speed reducer output shaft 222 and the rotating shaft 23, axial limit can be realized by aligning the through holes and the insertion holes and then inserting the limit pins, ensuring the reliability of the power connection between the speed reducer output shaft 222 and the rotating shaft 23. In addition, the limit pin can be a bolt, as long as the limit can be realized.

[0030] More specifically, the large bevel gear in the bevel gear assembly 223 is key-connected to the reduction output shaft 222, achieving circumferential limitation between the large bevel gear and the reduction output shaft 222, and ensuring the effectiveness of power transmission. Moreover, sleeve 226 is provided on both sides of the large bevel gear. At this time, both sleeves 226 are sleeved outside the reduction output shaft 222 and respectively abut against the two first bearings 224. The axial limitation of the large bevel gear on the reduction output shaft 222 is restricted by the two sleeves 226, thereby realizing the stability and reliability of the large bevel gear after being installed on the reduction output shaft 222, and the structural design is more reasonable.

[0031] More specifically, bearing installation grooves 2211 are symmetrically provided on the reduction housing 221, and both ends of the reduction output shaft 222 respectively extend out from the two bearing installation grooves 2211. At this time, limiting steps 2212 are provided on the opposite sides of the two bearing installation grooves 2211. Meanwhile, clamping grooves 2213 are respectively opened on the reduction housing 221 and on the opposite sides of the two bearing installation grooves 2211, and there is a gap between the clamping grooves 2213 and the corresponding limiting steps 2212. Meanwhile, snap rings 2214 are respectively provided in each clamping groove 2213, and the two first bearings 224 are respectively arranged in the two bearing installation grooves 2211. Moreover, both sides of each first bearing 224 respectively abut against the limiting steps 2212 and the snap rings 2214 of the corresponding bearing installation grooves 2211, so that each first bearing 224 can be limited by the limiting steps 2212 and the snap rings 2214, realizing the stable installation of the first bearing 224 on the reduction housing 221.

[0032] More specifically, oil seals 2215 are respectively provided on the reduction housing 221 and on the opposite sides of the two first bearings 224. The bearing installation grooves 2211 are sealed by the oil seals 2215, preventing leakage of lubricating oil, etc. and entry of external dust, etc., and the protection performance is better.

[0033] Figure 4 The figure is a structural diagram of a push rod according to a preferred embodiment of the present invention. As Figure 1 、 Figure 2 and Figure 4As shown, each push rod 1 further includes a lifting part 11 and a power input part 12. At this time, the lifting part 11 further includes an inner tube 111, an outer tube 112 and a lead screw pair. The outer tube 112 is sleeved outside the inner tube 111, and the inner tube 111 is slidably arranged relative to the outer tube 112 and circumferentially limited to each other, realizing the telescopic movement of the inner tube 111 relative to the outer tube 112. In addition, the lead screw pair is installed in the inner tube 111, the nut of the lead screw pair is connected to the inner tube 111, and one end of the lead screw of the lead screw pair extends into the power input part 12, so that the inner tube 111 can be pushed to slide relative to the outer tube 112 through the lead screw pair to meet the use requirement of the telescopic movement of the inner tube 111. It should be noted that since the structure of the lifting part 11 using the inner tube 111, the outer tube 112 and the lead screw pair is a conventional structure of electric push rods on the market and belongs to common general knowledge, its specific structure will not be described in detail here.

[0034] Figure 5 It is a sectional view of the power input part of a preferred embodiment of the present utility model. As Figure 4 and Figure 5 shown, the power input part 12 of the push rod 1 further includes a power box 121, a power input shaft 122, an input bevel gear 123, a transmission bevel gear 124, a transmission shaft 125, a reduction gear set 126, a second bearing 127 and a third bearing 128. During installation, the power box 121 is fixedly connected to the outer tube 112 to form an integral structure. At the same time, the power input shaft 122 is rotatably installed on the power box 121 through the second bearing 127, and one end of the power input shaft 122 extends outside the power box 121 and is connected to the coupling 24. At this time, the power input shaft 122 is the input shaft of the push rod 1, so that the rotating shaft 23 can drive the power input shaft 122 to rotate. In addition, an input bevel gear 123 is arranged at the other end of the power input shaft 122, the transmission shaft 125 is rotatably installed in the power box 121 through the third bearing 128, and a transmission bevel gear 124 is sleeved on the transmission shaft 125 and meshes with the input bevel gear 123, so that the transmission bevel gear 124 and the input bevel gear 123 can transfer the power from the power input shaft 122 to the transmission shaft 125, which can not only realize power transmission but also meet the change of the transmission direction and meet the structural layout requirements. And, a reduction gear set 126 is arranged between the transmission shaft 125 and the end of the lead screw extending into the power input part 12, further realizing speed reduction and increasing torque, providing conditions for stably driving the lead screw to rotate and realizing the telescopic movement of the outer tube 112 subsequently.

[0035] Figure 6 It is a structural diagram of the power box of a preferred embodiment of the present utility model. As Figure 5 and Figure 6As shown in the figure, two input shaft mounting holes 1211 are symmetrically formed on both sides of the power box 121 of the push rod 1. At this time, the two input shaft mounting holes 1211 are coaxially arranged, ensuring that the directions of the two input shaft mounting holes 1211 relative to the transmission shaft 125 can be the same. Moreover, when the power input shaft 122 is installed, the end of the power input shaft 122 connected to the coupling 24 is selected to extend from one of the input shaft mounting holes 1211. When the power box 121 is installed on the two opposite push rods 1, the power input shafts 122 of the two push rods 1 can extend from different input shaft mounting holes 1211 of the power box 121, so that the power input shafts 122 of the two push rods 1 can be arranged oppositely, that is, the power box 121 can adapt to the installation requirements of the two push rods 1 without additional targeted design, facilitating assembly and maintenance.

[0036] The one-to-two vehicle tailgate lifting power mechanism provided in this embodiment includes two push rods 1 and a power mechanism 2. By arranging the power mechanism 2 between the two push rods 1, and the motor 21 of the power mechanism 2 is power-connected to the reduction gearbox 22 with a double-headed output shaft. Rotating shafts 23 are respectively connected to the double-headed output shaft of the reduction gearbox 22 with a double-headed output shaft and extend towards the two push rods 1. At the same time, the two rotating shafts 23 are respectively power-connected to the input shafts of the corresponding push rods 1 through couplings 24, so that the motor 21 in the power mechanism 2 can drive the two push rods 1 to move synchronously. The structure is simple, easy to arrange, convenient for assembly and maintenance, reduces manufacturing and use costs. In addition, it can also achieve the purpose of driving the two push rods 1 to move synchronously by the same motor 21, improving the synchronism of the actions of the two push rods 1, thus ensuring the smoothness and reliability of the electric vehicle tailgate, with better use performance and facilitating the popularization and use of the electric vehicle tailgate.

[0037] The above is only a preferred embodiment of the present invention, and does not limit the implementation manner and protection scope of the present invention. For those skilled in the art, it should be able to realize that all equivalent replacements and obvious changes made by using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A one-to-two car tailgate lifting power mechanism, comprising two push rods with input shafts and a power mechanism, and the power mechanism comprises a motor, a reduction gearbox, two rotating shafts and two couplings, the motor is arranged between the two push rods, the input shaft of the reduction gearbox is dynamically connected to the output shaft of the motor, the reduction gearbox is a double-headed output shaft and extends toward the two push rods respectively, and the double-headed output shaft of the reduction gearbox is dynamically connected to one of the rotating shafts, and at the same time, the other ends of the two rotating shafts are dynamically connected to the input shafts of the two push rods through the couplings, and the outer shell of the motor or the reduction gearbox in the power mechanism is fixed to the outer shells of the two push rods through an extension part.

2. The one-to-two car tailgate lifting power mechanism according to claim 1 is characterized in that: The reduction box includes a reduction housing, a reduction output shaft, a bevel gear assembly and a first bearing. The reduction housing is installed on the motor. The reduction output shaft is placed horizontally in the reduction housing and both ends extend from both sides of the reduction housing. The first bearing is arranged between both ends of the reduction output shaft and the reduction housing. The output shaft of the motor extends into the reduction housing. The large bevel gear of the bevel gear assembly is installed on the reduction output shaft. The small bevel gear of the bevel gear assembly is installed on the output shaft of the motor and meshes with the large bevel gear.

3. The one-to-two car tailgate lifting power mechanism according to claim 2 is characterized in that: Both ends of the reduction output shaft are provided with connecting sleeves, one end of the connecting sleeve is sleeved on the reduction output shaft, and the other end of the connecting sleeve is provided with a polygonal hole, and the shape of the cross section of the rotating shaft is consistent with the shape of the polygonal hole.

4. The one-to-two car tailgate lifting power mechanism according to claim 2 is characterized in that: The large bevel gear is key-connected to the reduction output shaft, and shaft sleeves are provided on both sides of the large bevel gear, and the two shaft sleeves are respectively against the two first bearings.

5. The one-to-two car tailgate lifting power mechanism according to claim 2 is characterized in that: The reduction housing is symmetrically provided with bearing mounting grooves, and a limiting step is provided on the opposite side of the bearing mounting groove. At the same time, a clamping groove is opened on the reduction housing and on the side opposite to the bearing mounting groove, and a retaining ring is provided in each of the clamping grooves. The two first bearings are respectively arranged in the two bearing mounting grooves, and the two sides of each of the first bearings respectively abut against the limiting step and the retaining ring of the corresponding bearing mounting groove.

6. The one-to-two car tailgate lifting power mechanism according to claim 5 is characterized in that: An oil seal is arranged on the reduction housing and on the side opposite to the two first bearings.

7. The one-to-two car tailgate lifting power mechanism according to claim 1 is characterized in that: Each of the push rods comprises a lifting part and a power input part, and, The lifting part comprises an inner tube, an outer tube and a screw pair, wherein the outer tube is sleeved outside the inner tube and the inner tube is slidably arranged relative to the outer tube, the screw pair is installed in the inner tube and a nut of the screw pair is connected to the inner tube, and one end of the screw of the screw pair extends into the power input part; The power input part includes a power box, a power input shaft, an input bevel gear, a transmission bevel gear, a transmission shaft, a reduction gear set, a second bearing and a third bearing. The power box is fixedly connected to the outer tube, and the power input shaft is rotatably mounted on the power box through the second bearing. One end of the power input shaft is located outside the power box and connected to the coupling, and the other end of the power input shaft is provided with the input bevel gear. The transmission shaft is rotatably mounted in the power box through the third bearing, the transmission shaft is sleeved with the transmission bevel gear and meshes with the input bevel gear, and the reduction gear set is provided between the transmission shaft and one end of the screw rod extending into the power input part.

8. The one-to-two automobile tailgate lifting power mechanism according to claim 7 is characterized in that: Two input shaft mounting holes are symmetrically opened on both sides of the power box, and the two input shaft mounting holes are coaxially arranged, and one end of the power input shaft connected to the coupling extends out from one of the output shaft mounting holes.

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