Tail door supporting rod motor

Abstract

The utility model relates to a tail door supporting rod motor, and relates to the technical field of automobile electric tail doors, the tail door supporting rod motor is in sliding connection with a supporting rod used for supporting an automobile tail door, the tail door supporting rod motor comprises a sleeve and a driving part arranged in the sleeve, the driving part is wrapped by a shell, threads are arranged on the inner wall of the sleeve, and the driving part is connected with a rotating shaft rotationally connected with the shell; the rotating shaft is fixedly sleeved with a driving flange in threaded connection with the sleeve, a first abutting disc is fixedly arranged at the bottom of the supporting rod, a second abutting disc is fixedly arranged at the end, away from the driving piece, of the rotating shaft, and the first abutting disc and the second abutting disc are both in sliding connection with the sleeve. A first spring is installed on the side, close to the first abutting disc, of the second abutting disc in the axial direction, and a limiting piece for preventing the supporting rod from being separated from the sleeve is arranged on the sleeve. The structure of the automobile tail door supporting rod motor is simplified, electric power is saved on the premise that the use requirement can be met, and the economic and practical effects of the automobile tail door supporting rod motor are improved.

Description

Technical Field

[0001] This application relates to the field of automotive electric tailgate technology, and in particular to a tailgate strut motor. Background Art

[0002] The tailgate strut is an actuator in the electric tailgate system that realizes the opening or closing operation of the tailgate. It is a special component for adjusting the opening degree of the tailgate. Its function is to ensure that the tailgate can operate smoothly and be opened and closed smoothly. The automotive tailgate is generally used to open or close the trunk of the car. Earlier, the opening and closing of the automotive tailgate required manual effort. To overcome this problem, technicians developed an electric automotive tailgate that can be opened or closed electrically or remotely.

[0003] However, the structure of the tailgate strut motor in the prior art is relatively complex. To achieve the control of the lifting and lowering of the tailgate through an in-vehicle button or remote control, multiple parts inside the strut motor or a multi-stage transmission mechanism often need to work together. And because the structure of the tailgate strut motor is relatively complex, the load on the driving part is relatively large during the process of opening and closing the tailgate, which requires more power consumption, resulting in energy consumption and not meeting the increasingly strict economic requirements for automobiles. Utility Model Content

[0004] In order to simplify the structure of the tailgate strut motor, avoid excessive energy consumption when lifting and lowering the tailgate, and improve the economic applicability of the tailgate strut motor, this application provides a tailgate strut motor.

[0005] The tailgate strut motor provided by this application adopts the following technical solution:

[0006] A tailgate strut motor is slidably connected to a strut for propping up an automotive tailgate, and includes a sleeve and a driving part disposed inside the sleeve. The driving part is externally coated with a housing. The inner wall of the sleeve is provided with threads. The driving part is connected to a rotating shaft that is rotatably connected to the housing. A driving flange that is threadedly connected to the sleeve is fixedly sleeved on the rotating shaft. A first abutting disc is fixedly provided at the bottom of the strut. A second abutting disc is fixedly provided at the end of the rotating shaft away from the driving part. Both the first abutting disc and the second abutting disc are slidably connected to the sleeve. A first spring is axially installed on the side of the second abutting disc close to the first abutting disc. A limiting part for preventing the strut from detaching from the sleeve is provided on the sleeve.

[0007] By adopting the above technical solution, when the tailgate needs to be lifted or lowered, the driving member directly drives the rotating shaft to rotate, so that the driving flange fixedly connected to the rotating shaft drives the housing to move axially inside the sleeve in a threaded connection manner, thereby realizing the movement of the support rod. The operating principle is simple. While ensuring the satisfaction of the usage requirements, the rotation of the rotating shaft is directly converted into the movement of the support rod, avoiding energy consumption. At the same time, the first spring can prevent the support rod from having intermittent phenomena during the sliding process, apply buffering to the support rod, and improve the smoothness of the mechanism during operation.

[0008] Optionally, a limiting mechanism for preventing the housing from moving freely is provided on the housing, including a collar rotatably sleeved on one end of the housing away from the second abutting disc. The outer side of the collar is threadedly connected to the inner wall of the sleeve. A controller electrically connected to the motor is installed at the bottom of the housing. The controller is connected to a brake block, and one side of the brake block is closely attached to one side of the collar away from the second abutting disc.

[0009] By adopting the above technical solution, when the housing moves up and down, the threaded connection between the collar and the inner wall of the sleeve can ensure that the housing remains stable horizontally and does not shake. Secondly, when the support rod rises and falls to the selected position, the housing can be fixed by the friction between the brake block and the collar, so that the housing does not slide randomly and plays a fixing role.

[0010] Optionally, a second spring is provided at one end of the first abutting disc close to the support rod. The second spring is sleeved on the support rod, and the outer side of the second spring in the radial direction is in contact with the inner wall of the sleeve.

[0011] By adopting the above technical solution, a buffering force can be provided to the support rod during the sliding process, preventing the support rod from excessively squeezing the sleeve during the sliding along the sleeve and causing damage, improving the smoothness of the mechanism operation. At the same time, when the tailgate descends, the support rod can slowly enter the sleeve by the elastic force of the spring by itself, avoiding the support rod from getting stuck and causing the failure problem that the tailgate cannot be closed.

[0012] Optionally, a rotating assembly is hinged at one end of the sleeve away from the support rod, including a rotating head provided at the end of the sleeve. A through hole is radially penetrated through one end of the rotating head away from the sleeve. An articulated seat is provided at the bottom of the rotating head. Two mounting plates are symmetrically provided on the articulated seat. Mounting holes having the same size as the through hole and coaxial with the through hole are provided on the mounting plates. A connecting shaft is commonly penetrated through the two through holes and the two mounting holes arranged symmetrically.

[0013] By adopting the above technical solution, the sleeve can rotate around the hinge seat, and when the tailgate rises or falls, the support rod can better adjust the angle, thereby reducing the shear stress generated on the support rod and the sleeve, preventing the device from being damaged, and improving safety.

[0014] Optionally, both ends of the connecting shaft extend out of the mounting plate, and limiting holes are radially formed at both ends of the connecting shaft extending out of the mounting plate, and short rods are inserted into both of the limiting holes, and the short rods are in interference fit with the limiting holes.

[0015] By adopting the above technical solution, the connecting shaft can be restricted to prevent it from separating from the hinge seat during the rotation of the sleeve, and at the same time, the interference fit between the limiting hole and the short rod makes the installation and disassembly more convenient.

[0016] Optionally, the side of the sleeve where the through hole is formed is of a square structure, and the inner sides of two relatively arranged mounting plates are respectively attached to two side surfaces of the square structure of the sleeve.

[0017] By adopting the above technical solution, the connection structure between the sleeve and the hinge seat can be made more stable, and at the same time, it is also convenient to avoid excessive shear stress on a part of the sleeve during rotation, which may ultimately cause the connection position to collapse or crack, reducing the durability of the device.

[0018] Optionally, the threads on the inner walls of the driving flange, the collar and the sleeve are all square threads.

[0019] By adopting the above technical solution, the stability of the threaded connection between the driving flange, the collar and the inner wall of the sleeve can be improved, preventing the thread from being damaged by a large pulling force. At the same time, because the first abutting disc and the second abutting disc slide in the sleeve, setting the inner wall of the sleeve as a square thread can facilitate the sliding of the first abutting disc and the second abutting disc, preventing the side surfaces of the first abutting disc and the second abutting disc in contact with the sleeve and the inner wall of the sleeve from being damaged due to rubbing.

[0020] Optionally, an annular mounting groove is formed on the side of the second abutting disc close to the first abutting disc, the mounting groove is coaxial with the second abutting disc, and the first spring is clamped in the mounting groove.

[0021] By adopting the above technical solution, when the first spring is compressed between the first abutting disc and the second abutting disc, no lateral elastic force will occur and the problem of separating from the second abutting disc will not occur, improving the safety of the mechanism operation.

[0022] Optionally, the diameter of the inner circumferential surface of the mounting groove is greater than half of the diameter of the second abutting disc.

[0023] By adopting the above technical solution, the first spring can have a greater axial elastic force with better stability. At the same time, it can also avoid the generation of lateral elastic force on the first spring, thereby preventing the elastic force received by the support rod from fluctuating greatly and avoiding the bending of the first spring.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. The present application simplifies the structure of the tailgate support rod motor in the prior art. While ensuring the realization of the functions of the support rod motor, the structure is more simple, improving the economic applicability of the tailgate support rod motor;

[0026] 2. By simplifying the structure of the tailgate support rod motor, the present application reduces the power consumption during the opening and closing process of the vehicle tailgate, reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is an overall view of a tailgate support rod motor of the present application.

[0028] Figure 2 is an overall structural view of the drive flange of a tailgate support rod motor of the present application.

[0029] Figure 3 is an overall schematic view of the drive structure of a tailgate support rod motor of the present application.

[0030] Figure 4 is an overall structural view of the limit ring of a tailgate support rod motor of the present application.

[0031] Figure 5 is an overall structural view of the collar of a tailgate support rod motor of the present application.

[0032] Figure 6 is an exploded view of the internal structure of the sleeve of a tailgate support rod motor of the present application.

[0033] Figure 7 is Figure 1 an enlarged view of part A in

[0034] Figure 8 is an exploded view of the structure of the rotating assembly of a tailgate support rod motor of the present application.

[0035] Description of reference numerals: 1, strut; 11, first abutting disc; 111, second spring; 12, limiting member; 121, limiting ring; 2, sleeve; 3, driving member; 31, rotating shaft; 311, driving flange; 312, second abutting disc; 4, housing; 5, mounting groove; 51, first spring; 6, limiting mechanism; 61, collar; 62, brake block; 63, controller; 7, rotating assembly; 71, rotating head; 711, through hole; 72, hinge seat; 721, mounting plate; 7211, mounting hole; 73, connecting shaft; 731, limiting hole; 74, short rod. Detailed implementation manners

[0036] The following further describes the present application in detail with reference to Figure 1-8 the accompanying drawings.

[0037] An embodiment of the present application discloses a tailgate strut motor.

[0038] Referring to Figure 1 、 Figure 2 and Figure 3 , a tailgate strut motor is slidably connected to a strut 1 for supporting the tailgate to rise or fall, and includes a sleeve 2 that is hollow and has threads arranged along the axial direction on the inner wall. A driving member 3 is arranged inside the sleeve 2, and a housing 4 for protecting the driving member 3 is wrapped outside the driving member 3. The driving member 3 is connected to a rotating shaft 31 that is rotatably connected to the center position of the upper end surface of the housing 4 and extends outside the housing 4. A driving flange 311 that is threadedly connected to the inner wall of the sleeve 2 is fixedly sleeved on the part of the rotating shaft 31 located outside the housing 4. In this embodiment, preferably, the driving member 3 is a speed regulating motor to precisely control the rising or falling length of the strut 1.

[0039] Referring to Figure 3 and Figure 6 , the lower end of the strut 1 extends into the sleeve 2, and a first abutting disc 11 is fixedly arranged at the end of the strut 1 extending into the sleeve 2. A second abutting disc 312 is fixedly arranged at the end of the rotating shaft 31 extending out of the housing 4. The first abutting disc 11, the second abutting disc 312 and the sleeve 2 are all coaxial, and both the first abutting disc 11 and the second abutting disc 312 can slide along the axis inside the sleeve 2. An annular mounting groove 5 that is coaxial with the second abutting disc 312 is integrally arranged on the second abutting disc 312 on the side close to the first abutting disc, and a first spring 51 is arranged in the mounting groove 5 to protect the first spring 51 from being bent laterally, so that when the strut 1 slides inside the sleeve 2 under the action of a thrust, it can be more stable.

[0040] In order to ensure that the first abutting disc 11 and the second abutting disc 312 do not shake laterally when sliding inside the sleeve 2, in this embodiment, preferably, the outer sides of the first abutting disc 11 and the second abutting disc 312 are close to the inner wall of the sleeve 2.

[0041] Reference Figure 4 and Figure 6 Furthermore, a limiting member 12 is provided on the sleeve 2 to prevent the support rod 1 and the first abutting disc 11 fixedly connected to the support rod 1 from detaching from the sleeve 2. The limiting member 12 is an annular limiting ring 121, and the limiting ring 121 is threadedly connected to one end of the sleeve 2 close to the support rod 1, and its inner ring is slidably connected to the support rod 1. At the same time, the limiting ring 121 can also provide an installation path for the parts inside the sleeve 2.

[0042] Reference Figure 5 and Figure 6 A limiting mechanism 6 is provided on the housing 4 to prevent the housing 4 from freely moving under the action of gravity when the driving member 3 is not started, including a collar 61 rotatably sleeved on the housing 4 on the side away from the second abutting disc 312 and a braking block 62 abutting against the side of the collar 61 away from the second abutting disc 312. The outer side of the collar 61 away from the housing 4 is provided with threads and is threadedly connected to the inside of the sleeve 2.

[0043] Reference Figure 6 Specifically, the braking block 62 is connected to a controller 63 electrically connected to the motor, and the controller 63 can drive the braking block 62 to closely adhere to or away from the collar 61. When the housing 4 moves to a selected position, the controller 63 will drive the braking block 62 to abut against the collar 61. Then, through the frictional force, the collar 61 cannot rotate freely, realizing the fixation of the position of the housing 4.

[0044] Reference Figure 2 、 Figure 5 and Figure 6 The threads on the inner wall of the sleeve 2, the driving flange 311, and the collar 61 are all rectangular threads, so that the connection structures between the inner wall of the sleeve 2 and the driving flange 311 and the collar 61 are more stable, avoiding damage to the thread structures on the inner wall of the sleeve 2, the driving flange 311, and the collar 61 when the housing 4 bears a large axial force. At the same time, setting the inner wall of the sleeve 2 to rectangular threads can prevent the first abutting disc 11 and the second abutting disc 312 from damaging the thread structure due to friction between the side surfaces of the inner wall of the sleeve 2 in contact with them during the sliding process in the sleeve 2.

[0045] Reference Figure 1 and Figure 6 In order to prevent the first abutting disc 11 from colliding with the limiting ring 121 due to the large elastic force of the first spring 51 during the sliding process, and further causing damage to the sleeve 2 threadedly connected to the limiting ring 121, a second spring 111 is provided at one end of the first abutting disc 11 close to the support rod 1. The outer side of the second spring 111 in the radial direction abuts against the inner wall of the sleeve 2 to prevent radial shaking.

[0046] Reference Figure 1 、Figure 7 and Figure 8 At one end of the sleeve 2 away from the support rod 1, a rotating assembly 7 is hinged, which can make the sleeve 2 rotate around the end. The rotating assembly 7 includes a rotating head 71 integrally fixed to the end of the sleeve 2 and a hinge seat 72 hinged to the rotating head 71. Specifically, symmetrically and integrally connected to the hinge seat 72 are mounting plates 721 perpendicular to the hinge seat 72. A through hole 711 is transversely formed through the rotating head 71, and mounting holes 7211 coaxial with the through hole 711 are formed in both mounting plates 721. The cross-section of the rotating head 71 in the transverse direction is square and is placed between the two mounting plates 721. A connecting shaft 73 for hinging the sleeve 2 is commonly inserted into the through hole 711 and the two mounting holes 7211.

[0047] Refer to Figure 7 and Figure 8 Furthermore, both ends of the connecting shaft 73 extend out of the mounting plate 721, and limiting holes 731 are radially formed through both ends of the connecting shaft 73 extending out of the two mounting plates 721, and short rods 74 are inserted into the limiting holes 731. The short rods 74 are in interference fit with the limiting holes 731 to prevent the short rods 74 from sliding out of the limiting holes 731 during the rotation of the sleeve 2.

[0048] The implementation principle of an electric tailgate support rod in an embodiment of the present application is as follows:

[0049] When the automobile tailgate needs to be lifted or lowered, the driving member 3, i.e., the speed-regulating motor, drives the rotating shaft 31 to rotate, thereby driving the driving flange 311 to rotate. Since the driving flange 311 is threadedly connected to the sleeve 2, the housing 4, the driving member 3 connected to the housing 4, and the rotating shaft 31 are driven to move along the axial direction of the sleeve 2 within the sleeve 2. At this time, the second abutting disc 312 at the upper end of the rotating shaft 31 pushes the first abutting disc 11 and the support rod 1 to move back and forth through the first spring 51, thereby realizing the opening and closing of the tailgate.

[0050] During this process, since the tailgate needs to rotate when it is opened or closed, the support rod 1 connected to the tailgate and the sleeve 2 connected to the support rod 1 also rotate around the hinge seat 72 under the action of the rotating assembly 7.

[0051] The above are all preferred embodiments of the present application. The protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A tailgate strut motor is slidably connected to a strut (1) for propping up an automobile tailgate, and is characterized in that: It includes a sleeve (2) and a driving member (3) disposed inside the sleeve (2). The outside of the driving member (3) is covered with a housing (4). The inner wall of the sleeve (2) is provided with threads. The driving member (3) is connected to a rotating shaft (31) that is rotatably connected to the housing (4). A driving flange (311) that is threadedly connected to the sleeve (2) is fixedly sleeved on the rotating shaft (31). A first abutting disc (11) is fixedly provided at the bottom of the support rod (1). A second abutting disc (312) is fixedly provided at the end of the rotating shaft (31) away from the driving member (3). Both the first abutting disc (11) and the second abutting disc (312) are slidably connected to the sleeve (2). A first spring (51) is axially installed on the side of the second abutting disc (312) close to the first abutting disc (11). A limiting member (12) for preventing the support rod (1) from detaching from the sleeve (2) is provided on the sleeve (2).

2. The tailgate strut motor according to claim 1, characterized in that: A limiting mechanism (6) for preventing the housing (4) from moving freely is provided on the housing (4), including a collar (61) rotatably sleeved on one end of the housing (4) away from the second abutting disc (312). The outer side of the collar (61) is threadedly connected to the inner wall of the sleeve (2). A controller (63) electrically connected to the motor is installed at the bottom of the housing (4). The controller (63) is connected to a brake block (62). One side of the brake block (62) is in close contact with the side of the collar (61) away from the second abutting disc (312).

3. The tailgate strut motor according to claim 1, wherein: A second spring (111) is provided at one end of the first abutting disc (11) close to the support rod (1). The second spring (111) is sleeved on the support rod (1), and the outer side of the second spring (111) in the radial direction is in contact with the inner wall of the sleeve (2).

4. The tailgate strut motor according to claim 1, wherein: A rotating assembly (7) is hinged to one end of the sleeve (2) away from the support rod (1), including a rotating head (71) provided at the end of the sleeve (2). A through hole (711) is radially penetrated through one end of the rotating head (71) away from the sleeve (2). A hinge seat (72) is provided at the bottom of the rotating head (71). Two mounting plates (721) are symmetrically provided on the hinge seat (72). Mounting holes (7211) having the same size as the through hole (711) and coaxial with the through hole (711) are provided on the mounting plates (721). A connecting shaft (73) is commonly penetrated through the two through holes (711) and the two mounting holes (7211) that are symmetrically arranged.

5. The tailgate strut motor according to claim 4, characterized in that: Both ends of the connecting shaft (73) extend out of the mounting plate (721), and limiting holes (731) are radially provided at both ends of the connecting shaft (73) extending out of the mounting plate (721). Short rods (74) are penetrated through the two limiting holes (731), and the short rods (74) are in interference fit with the limiting holes (731).

6. The tailgate strut motor according to claim 5, wherein: One side of the sleeve (2) where the through hole (711) is provided is a square structure, and the inner sides of two oppositely arranged mounting plates (721) are both in contact with two side surfaces of the square structure of the sleeve (2).

7. The tailgate strut motor according to claim 2, wherein: The threads on the driving flange (311), the collar (61), and the inner wall of the sleeve (2) are all rectangular threads.

8. A tailgate strut motor according to claim 1, characterized in that: An annular mounting groove (5) is provided on one side of the second abutting disc (312) close to the first abutting disc (11). The mounting groove (5) is coaxial with the second abutting disc (312), and the first spring (51) is clamped in the mounting groove (5).

9. The tailgate strut motor according to claim 8, wherein: The diameter of the inner circumferential surface of the mounting groove (5) is greater than half of the diameter of the second abutting disc (312).

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