Electric opening and closing actuator and vehicle

Abstract

The utility model discloses an electric opening and closing actuator and a vehicle. The electric opening and closing actuator comprises a driving motor, a transmission mechanism, a lead screw actuating mechanism and a sliding rail mechanism. The lead screw actuating mechanism comprises a lead screw connected with the transmission mechanism and a lead screw nut arranged on the lead screw in a sleeving mode. The lead screw nut comprises a sliding shaft, and the sliding shaft extends into the sliding rail mechanism. The sliding rail mechanism is provided with a sliding cavity for the sliding shaft to slide, and the sliding shaft slides in the sliding cavity while moving in the axial direction of the lead screw so as to drive the sliding rail mechanism to swing. According to the electric opening and closing actuator, in the opening and closing process, the electric opening and closing actuator drives the sliding rail mechanism to swing only through movement of the position of the lead screw nut, the whole actuator does not move, and the space occupied by installation and movement of the electric opening and closing actuator is greatly reduced. The vehicle provided by the utility model comprises the electric opening and closing actuator.

Description

Technical Field

[0001] This application relates to the field of electric opening and closing technology for automobile trunks, and more particularly to an electric opening and closing actuator and a vehicle. Background Technology

[0002] With the rapid development of the new energy vehicle industry, there is a certain surplus of power supply for automobiles, and more and more electric drive body accessories are being used in vehicles, improving their electrification and intelligence. To improve the convenience of opening and closing the trunk of cars, electric trunk opening and closing systems are becoming increasingly popular in the market.

[0003] The electric tailgate opening and closing system for cars mainly consists of an ECU, an electric tailgate opening and closing actuator, and an electric magnetic lock. When the user wants to open the tailgate, pressing the switch button sends a signal to the ECU, which then issues a command to unlock the tailgate and control the electric tailgate opening and closing actuator to open it. When the user wants to close the tailgate, pressing the switch button again sends a signal to the ECU, which then issues a command to control the electric tailgate opening and closing actuator to move in the opposite direction, locking the tailgate after the closing action is complete. Therefore, the electric opening and closing actuator mechanism, which provides the opening and closing action for the tailgate, is the key component of the electric tailgate opening and closing system.

[0004] Currently, the mainstream electric tailgate opening and closing actuators for passenger cars mainly come in the form of L-shaped push rods, rocker arm push rods, and U-shaped push rods. Among them, L-shaped push rods have a larger stroke, requiring more space for movement; rocker arm push rods need to be developed in sync with the customer's vehicle, resulting in a complex structure and higher cost; U-shaped push rods also have a large stroke, requiring more space for movement and a reversing gear set, making their structure complex as well. It is evident that these existing devices generally suffer from complex structures, large space requirements, and unstable operation, impacting the user experience.

[0005] Therefore, it is necessary to propose a technical solution to overcome the shortcomings of existing technologies. Utility Model Content

[0006] This application provides an electric opening and closing actuator and a vehicle, which aims to reduce the space occupied by the electric opening and closing actuator during installation and movement.

[0007] This application is achieved through the following technical solution: an electric opening and closing actuator, including a drive motor, a transmission mechanism, a lead screw actuation mechanism, and a slide rail mechanism. The lead screw actuation mechanism includes a lead screw connected to the transmission mechanism and a lead screw nut sleeved on the lead screw. The lead screw nut includes a sliding shaft that extends into the slide rail mechanism. The slide rail mechanism has a sliding cavity for the sliding shaft to slide. The sliding shaft moves along the axial direction of the lead screw while sliding within the sliding cavity to drive the slide rail mechanism to swing.

[0008] As a further improved technical solution, the slide rail mechanism includes a first half-groove and a second half-groove, which are joined together to form the sliding cavity.

[0009] As a further improved technical solution, a ball bearing is connected to the sliding shaft, and the ball bearing moves within the sliding cavity.

[0010] As a further improved technical solution, a spring is sleeved on the sliding shaft, and the spring elastically abuts against the ball.

[0011] As a further improved technical solution, the axial direction of the sliding shaft is perpendicular to the axial direction of the lead screw.

[0012] As a further improved technical solution, the drive motor includes a motor shaft and a motor housing, and the transmission mechanism is a worm gear mechanism, which includes a worm driven by the drive motor and a worm wheel meshing with the worm. The worm is fixedly connected to the motor shaft and extends out of the motor housing.

[0013] As a further improved technical solution, the electric opening and closing actuator includes a gearbox housing, the worm gear is disposed inside the gearbox housing, the worm extends into the gearbox housing to mesh with the worm gear, and the motor housing is connected and fixed to the gearbox housing.

[0014] As a further improved technical solution, the electric opening and closing actuator includes a guide housing, the lead screw and the lead screw nut are disposed in the guide housing, and the guide housing has a guide groove for the sliding shaft to protrude.

[0015] As a further improved technical solution, the lead screw actuation mechanism includes two bearings sleeved on both ends of the lead screw, one of which is located inside the gearbox housing and the other is located inside the guide housing.

[0016] This application also achieves this through the following technical solution: a vehicle, including a body sheet and a trunk door, wherein the body sheet and the trunk door are connected by a gooseneck tube, the gooseneck tube is pivotally connected to the body sheet, and the vehicle further includes an electric opening and closing actuator as described in any of the above technical solutions, wherein the electric opening and closing actuator is integrally fixed to the body sheet, and the slide rail mechanism is fixed to the gooseneck tube.

[0017] This application provides an electric opening and closing actuator including a lead screw actuation mechanism. The lead screw actuation mechanism includes a lead screw and a lead screw nut sleeved on the lead screw. The lead screw nut includes a sliding shaft that extends into a slide rail mechanism. The slide rail mechanism has a sliding cavity for the sliding shaft to slide. The sliding shaft moves along the axial direction of the lead screw while sliding within the sliding cavity to drive the slide rail mechanism to swing, thereby realizing rotary electric opening and closing. During the opening and closing process, only the position of the lead screw nut of the electric opening and closing actuator moves, driving the slide rail mechanism to swing, while the actuator as a whole does not move, greatly reducing the space occupied by the installation and movement of the electric opening and closing actuator. Attached Figure Description

[0018] Figure 1 This is a side view of an embodiment of the electric opening and closing actuator of this application.

[0019] Figure 2 It is along Figure 1 A cross-sectional view along line AA in the middle.

[0020] Figure 3 This is another side view of an embodiment of the electric opening and closing actuator of this application.

[0021] Figure 4 It is along Figure 3 A cross-sectional view along the BB line.

[0022] Figure 5 This is an exploded view of an embodiment of the electric opening and closing actuator of this application.

[0023] Figure 6 This is a schematic diagram of the electric opening and closing actuator of this application used on a vehicle, wherein the trunk is in the closed state.

[0024] Figure 7 This is a schematic diagram of the electric opening and closing actuator of this application used on a vehicle, wherein the trunk is in the open state.

[0025] The reference numerals in the attached drawings are as follows: 100, electric opening and closing actuator; 1, drive motor; 11, motor shaft; 12, motor housing; 13, first connecting bolt; 2, guide housing; 31, worm gear; 32, worm wheel; 33, bushing; 34, gearbox housing; 41, lead screw; 42, lead screw nut; 421, sliding shaft; 422, ball bearing; 423, spring; 43, second connecting bolt; 44, end cover; 5, slide rail mechanism; 50, sliding cavity; 51, first half-groove; 52, second half-groove; 53, third connecting bolt; 6, bearing; 7, trunk door; 8, gooseneck tube; 9, body sheet metal. Detailed Implementation

[0026] To provide a clearer understanding of the technical features, objectives, and effects of this application, the specific embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0027] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0028] Please see Figures 1 to 5 As shown, this application provides an electric opening and closing actuator 100. The electric opening and closing actuator 100 is a device driven by electricity, which uses a motion mechanism to open and close components such as doors. In this embodiment, the electric opening and closing actuator 100 includes a drive motor 1, a transmission mechanism, a lead screw actuation mechanism, and a slide rail mechanism 5. The lead screw actuation mechanism includes a lead screw 41 connected to the transmission mechanism and a lead screw nut 42 sleeved on the lead screw 41. The lead screw nut 42 includes a sliding shaft 421, which extends into the slide rail mechanism 5. The slide rail mechanism 5 has a sliding cavity 50 for the sliding shaft 421 to slide. The sliding shaft 421 moves along the axial direction of the lead screw 41 while sliding within the sliding cavity 50, thereby driving the slide rail mechanism 5 to swing.

[0029] The electric opening and closing actuator 100 provided in this application has only linear sliding motion at the position of the lead screw nut 42 during the opening and closing process. The electric opening and closing actuator 100 as a whole does not move. Its structure is simple and the movement process is simple and reliable, which greatly reduces the space occupied by the installation and movement of the electric opening and closing actuator 100.

[0030] Please see Figures 3 to 5As shown, in this embodiment, the drive motor 1 includes a motor shaft 11 and a motor housing 12. The motor shaft 11 extends out of the motor housing 12 for connection with the transmission mechanism to output power and drive the transmission mechanism to move. The motor housing 12 facilitates the installation of the drive motor 1 with other components.

[0031] In this embodiment, the transmission mechanism is a worm gear mechanism, which includes a worm 31 and a worm wheel 32. One end of the worm 31 is connected to the motor shaft 11, and the worm 31 is coaxially arranged with the motor shaft 11 so that it can rotate around its own axis driven by the rotation of the motor shaft 11. A bushing 33 is installed on the other end of the worm 31 to restrict the position of the worm 31 and prevent the worm 31 from moving along its axial direction. The axial direction of the worm wheel 32 is arranged perpendicular to the axial direction of the worm 31, and the circumferential surfaces of the worm 31 and the worm wheel 32 are provided with mutually meshing tooth structures. Through the engagement of the meshing tooth structures, the direction of the power output by the motor shaft 11 can be changed to a vertical direction, which facilitates the arrangement of the structure. The electric opening and closing actuator 100 includes a gearbox housing 34, a worm gear 32 disposed within the gearbox housing 34, and a worm 31 fixedly connected to the motor shaft 11 and extending out of the motor housing 12. The worm 31 extends into the gearbox housing 34 to mesh with the worm gear 32. The motor housing 12 is connected and fixedly connected to the gearbox housing 34. In this embodiment, the motor housing 12 and the gearbox housing 34 are fastened together by a plurality of first connecting bolts 13 and nuts. A snap-fit ​​structure can be used to pre-connect the motor housing 12 and the gearbox housing 34, followed by bolt and nut locking, which is convenient to install and reliable in connection. In other embodiments, the transmission mechanism can also be other transmission mechanisms, such as a gear transmission mechanism.

[0032] Please see Figure 1 , Figure 2 and Figure 5As shown, the lead screw actuation mechanism includes a lead screw 41 and a lead screw nut 42. The lead screw nut 42 is threadedly connected to the lead screw 41. One end of the lead screw 41 is fixedly sleeved on the worm gear 32. The lead screw 41 and the worm gear 32 are coaxially arranged, and the rotation of the worm gear 32 drives the lead screw 41 to rotate around its own axis. In this embodiment, the electric opening and closing actuator 100 includes a guide housing 2, and the lead screw 41 and the lead screw nut 42 are disposed within the guide housing 2. The lead screw actuation mechanism also includes two bearings 6 sleeved on both ends of the lead screw 41. One of the two bearings 6 is disposed within the gearbox housing 34, and the other is disposed within the guide housing 2. In this embodiment, the bearing 6 disposed within the gearbox housing 34 is located outside the worm gear 32, that is, the worm gear 32 is also located between the two bearings 6, so that the two bearings 6 can better provide support and make the power transmission more stable. Figure 5 As shown, in this embodiment, the guide housing 2 and the gearbox housing 34 are fastened together by a second connecting bolt 43 and a nut. In this embodiment, the guide housing 2 also includes an end cap 44. The guide housing 2, the end cap 44, and the gearbox housing 34 can be pre-connected by a snap-fit ​​structure, and then locked and fixed by bolts and nuts, which is convenient to install and reliable to connect.

[0033] Please refer to this carefully. Figure 1 and Figure 2 As shown, the lead screw nut 42 includes a sliding shaft 421, and the guide housing 2 has a guide groove for the sliding shaft 421 to protrude. The length direction of the guide groove is parallel to the axial direction of the lead screw 41. When the lead screw 41 rotates, the guide groove prevents the lead screw nut 42 sleeved on the lead screw 41 from rotating, and guides the lead screw nut 42 and its connected sliding shaft 421 to slide along the guide groove. The axial direction of the sliding shaft 421 is perpendicular to the axial direction of the lead screw 41. The sliding shaft 421 extends into the slide rail mechanism 5. The slide rail mechanism 5 has a sliding cavity 50 for the sliding shaft 421 to slide. In this embodiment, the slide rail mechanism 5 includes a first half-groove 51 and a second half-groove 52, which are joined together to form the sliding cavity 50. A ball bearing 422 is connected to the sliding shaft 421, and the ball bearing 422 moves within the sliding cavity 50. The first semi-groove member 51 has a semi-groove forming half of the track for the rolling ball 422, and the second semi-groove member 52 has a semi-groove forming the other half of the track for the rolling ball 422. After the first semi-groove member 51 and the second semi-groove member 52 are connected and fixed together, the two semi-grooves form a complete sliding cavity 50, and the rolling ball 422 is confined within the sliding cavity 50 and will not detach from the sliding cavity 50.

[0034] Furthermore, a spring 423 is sleeved on the sliding shaft 421, and the spring 423 elastically abuts against the ball 422. The spring 423 elastically abuts against the ball 422 to ensure that the ball 422 is in contact with the sliding cavity 50, thereby improving the stability of the movement; at the same time, the spring 423 can also allow the ball 422 to have a certain floating space to prevent jamming or stuckness during movement, thereby improving the reliability of the movement. The slide rail mechanism 5 is connected to the component that needs to be driven to move by a third connecting bolt 53. When the electric opening and closing actuator 100 works to drive the slide rail mechanism 5 to move, the slide rail mechanism 5 drives the component that needs to be driven to move to move.

[0035] Please refer to the following: Figure 1 , Figure 6 and Figure 7 As shown, in one embodiment, the electric opening and closing actuator 100 is used for opening and closing the trunk of a vehicle. The vehicle includes a body panel 9 and a trunk door 7, which are connected by a gooseneck tube 8. The gooseneck tube 8 is pivotally connected to the body panel 9. The gooseneck tube 8 is a curved rigid connecting tube, and is referred to in the industry as a gooseneck tube 8 because its curved shape resembles a goose's neck. The electric opening and closing actuator 100 is fixed to the body panel 9 as a whole; that is, the motor housing 12, the gearbox housing 34, and the guide housing 2 of the electric opening and closing actuator 100 are fixed to the body panel 9 and remain stationary. The slide rail mechanism 5 is fixed to the gooseneck tube 8.

[0036] During operation, the drive motor 1 starts, and the motor shaft 11 rotates, driving the worm gear 31 to output torque and drive the worm wheel 32 to rotate. The rotation of the worm wheel 32 drives the lead screw 41 to rotate, and the rotation of the lead screw 41 causes the lead screw nut 42 sleeved on the lead screw 41 to move linearly. The sliding shaft 421 connected to the lead screw nut 42 moves in translation, causing the balls 422 on it to roll in the sliding cavity 50 of the slide rail mechanism 5, and at the same time pushing the slide rail mechanism 5 to move. Since the slide rail mechanism 5 is connected to the gooseneck tube 8, it is restricted by the connection method between the gooseneck tube 8 and the body sheet metal 9, and thus generates a swinging motion to drive the gooseneck tube 8 connected to the trunk door 7 of the car to move synchronously, thereby realizing the electric opening and closing of the trunk door 7 of the vehicle.

[0037] As described above in the specific embodiments, the electric opening and closing actuator 100 provided in this application includes a lead screw actuation mechanism, which includes a lead screw 41 and a lead screw nut 42 sleeved on the lead screw 41. The lead screw nut 42 includes a sliding shaft 421, which extends into the slide rail mechanism 5. The slide rail mechanism 5 has a sliding cavity 50 for the sliding shaft 421 to slide. The sliding shaft 421 moves along the axial direction of the lead screw 41 while sliding within the sliding cavity 50, thereby driving the slide rail mechanism 5 to swing and achieve rotary electric opening and closing. During the opening and closing process, only the position of the lead screw nut 42 of the electric opening and closing actuator 100 moves, and the actuator as a whole does not move. Its structure is simple and the movement process is simple and reliable, greatly reducing the space occupied by the installation and movement of the electric opening and closing actuator 100. This application also provides a vehicle that includes the above-described electric opening and closing actuator 100.

[0038] This application is illustrated through several specific embodiments. Those skilled in the art will understand that various modifications and equivalent substitutions can be made to this application without departing from its scope. Furthermore, various modifications can be made to this application for specific situations or circumstances without departing from the scope of this utility model. Therefore, this application is not limited to the specific embodiments disclosed, but should include all embodiments falling within the scope of the claims of this application.

Claims

1. An electric opening and closing actuator, characterized in that, The system includes a drive motor, a transmission mechanism, a lead screw actuation mechanism, and a slide rail mechanism. The lead screw actuation mechanism includes a lead screw connected to the transmission mechanism and a lead screw nut sleeved on the lead screw. The lead screw nut includes a sliding shaft that extends into the slide rail mechanism. The slide rail mechanism has a sliding cavity for the sliding shaft to slide. The sliding shaft moves along the axial direction of the lead screw while sliding within the sliding cavity to drive the slide rail mechanism to swing.

2. The electric opening and closing actuator as described in claim 1, characterized in that, The slide rail mechanism includes a first half-groove and a second half-groove, which are joined together to form the sliding cavity.

3. The electric opening and closing actuator as described in claim 1 or 2, characterized in that, A ball bearing is connected to the sliding shaft, and the ball bearing moves within the sliding cavity.

4. The electric opening and closing actuator as described in claim 3, characterized in that, A spring is fitted onto the sliding shaft, and the spring elastically abuts against the ball.

5. The electric opening and closing actuator as described in claim 1, characterized in that, The axis of the sliding shaft is perpendicular to the axis of the lead screw.

6. The electric opening and closing actuator as described in claim 1, characterized in that, The drive motor includes a motor shaft and a motor housing. The transmission mechanism is a worm gear mechanism, which includes a worm driven by the drive motor and a worm wheel meshing with the worm. The worm is fixedly connected to the motor shaft and extends out of the motor housing.

7. The electric opening and closing actuator as described in claim 6, characterized in that, The electric opening and closing actuator includes a gearbox housing, a worm gear disposed inside the gearbox housing, a worm extending into the gearbox housing to mesh with the worm gear, and a motor housing connected and fixed to the gearbox housing.

8. The electric opening and closing actuator as described in claim 7, characterized in that, The electric opening and closing actuator includes a guide housing, the lead screw and the lead screw nut are disposed inside the guide housing, and the guide housing has a guide groove for the sliding shaft to protrude.

9. The electric opening and closing actuator as described in claim 8, characterized in that, The lead screw actuation mechanism includes two bearings sleeved on both ends of the lead screw, one of which is located inside the gearbox housing and the other is located inside the guide housing.

10. A vehicle comprising a body panel and a tailgate, wherein the body panel and the tailgate are connected by a gooseneck tube, the gooseneck tube being pivotally connected to the body panel, characterized in that, The vehicle also includes an electric opening and closing actuator as described in any one of claims 1 to 8, wherein the electric opening and closing actuator is integrally fixed to the body sheet metal, and the slide rail mechanism is fixed to the gooseneck tube.

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