Ball head transmission type electric side opening door driving device structure

Abstract

The utility model belongs to the technical field of vehicle side opening door drivers, and particularly relates to a ball head transmission type electric side opening door driving device structure. The push rod assembly is provided with a ball socket matched with a joint ball of the lead screw assembly and a spring used for eliminating the fit clearance between the joint ball and the ball socket, thrust is continuously applied through the spring, the joint ball can be tightly held by the ball socket, and damping force is continuously provided. The stability of connection between the driver push rod assembly and the lead screw nut in the vehicle side door opening process is greatly improved; the lead screw nut is provided with a guide structure matched with the guide shell, and the outer wall of the lead screw nut is matched with a plurality of guide faces on the inner wall of the guide shell, so that it can be guaranteed that the telescopic action of the push rod assembly relative to the automobile door is conducted stably. Through reasonable arrangement of the driving assembly, the transmission assembly, the shell assembly, the vehicle door mounting assembly and the execution assembly, the overall structure is compact, stable and reliable, the shaking condition when the vehicle door hovers can be effectively avoided, the user experience is improved, and popularization is easy.

Description

Technical Field

[0001] This utility model belongs to the technical field of vehicle side-opening door drive, specifically relating to a ball-head transmission type electric side-opening door drive device structure. Background Technology

[0002] Currently, among the mass-produced electric side-opening door actuators on the market, the push rod type is one of the mainstream side-opening door actuators. That is, one end of the push rod is fixed to the vehicle body, and the other end is hinged to the lead screw nut. The lead screw is arranged in the mechanism housing. The screw drive realizes helical transmission, and drives the lead screw nut and the hinged push rod to move laterally to open and close the door.

[0003] In the push rod type side-opening door actuator, a spherical bearing structure is used when the push rod is connected to the lead screw nut to realize the swing of the push rod on the horizontal plane during the opening and closing of the door, and to compensate for the axial error of the hinge shaft during the installation of the door.

[0004] Existing spherical bearing structures are typically designed at the end where the push rod connects to the lead screw nut, with a threaded hole in the corresponding mounting groove of the lead screw nut, and the two are connected by bolts. However, because the spherical bearing structure on the push rod has a small interference fit between a metal inner ball socket and a plastic ball joint, the plastic ball joint will wear down during long-term operation of the electric side door actuator, causing the door to wobble when it is hovering. Furthermore, since the entire mechanism is installed inside the door, the bolt connection structure on the lead screw nut is difficult to design with a loosening mechanism due to space constraints, resulting in a risk of the bolt coming out. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a ball joint drive type electric side door opening device structure, which is compact in structure, reliable in use, and can greatly improve the stability of the drive device screw nut and push rod transmission during the side door opening process, effectively avoid the shaking when the door is suspended, and improve the user experience.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0007] A ball-head drive type electric side-opening door drive device structure mainly includes: a drive structure drive assembly 100 and a transmission assembly 200, a housing assembly 300, a door mounting assembly 400 and an actuator assembly 500;

[0008] The housing assembly 300 includes a guide housing 330, which is fixedly connected to the car door via a door mounting assembly 400. The actuation assembly 500 consists of a lead screw assembly 510 and a push rod assembly 520. The lead screw assembly 510 includes a lead screw 513 rotatably disposed in the upper cavity of the guide housing 330. A lead screw nut 511 is threadedly fitted onto the lead screw 513. The outer wall of the lead screw nut 511 has a guide structure adapted to the inner wall of the upper cavity of the guide housing 330, and a ball joint 51 is fixedly connected to the bottom of the lead screw nut 511. 2. The push rod assembly 520 includes a push rod 521 slidably disposed in the lower cavity of the guide housing 330. One end of the push rod 521 is provided with a ball socket 522 connected to the joint ball 512, and the other end extends out of the car door and is hinged to the body mounting bracket 530. The body mounting bracket 530 is fixedly installed on the car body. The drive assembly 100 is connected to the lead screw 513 through the transmission assembly 200 to drive the lead screw 513 to rotate, and drives the push rod 521 to extend and retract relative to the car door through the lead screw nut 511, so as to realize the electric opening and closing of the car door relative to the car body.

[0009] Furthermore, the ball socket 522 covers the outside of the articulated ball 512, and a spring 523 abuts between the articulated ball 512 and the ball socket 522. The spring 523 is installed inside the ball socket 522 through a cover plate 524.

[0010] Furthermore, the guide structure includes: a first guide surface 5111 located at the top of the lead screw nut 511, a second guide surface 5112 and a third guide surface 5113 located on both sides of the lead screw nut 511; a fourth guide surface 331 adapted to the first guide surface 5111 is provided on the top of the upper cavity inner wall of the guide housing 330, and a fifth guide surface 332 and a sixth guide surface 333 adapted to the second guide surface 5112 and the third guide surface 5113 are provided on both sides of the upper cavity inner wall of the guide housing 330.

[0011] Furthermore, one end of the guide housing 330 is fixedly connected to the outer shell of the transmission assembly 200 via a first end housing 310, and the other end is fixedly connected to the third end housing 420 of the door mounting assembly 400 via a second end housing 410.

[0012] Furthermore, bearings 320 are installed at both ends of the lead screw 513 located within the first end housing 310 and the second end housing 410.

[0013] Furthermore, the drive assembly 100 includes a drive motor, the transmission assembly 200 includes a transmission gearbox, the output end of the drive motor is connected to the input end of the transmission gearbox, and the output end of the transmission gearbox is connected to the lead screw 513.

[0014] Furthermore, the third end housing 420 of the door mounting assembly 400 is fixedly connected to the car door by door mounting bolts 430.

[0015] Furthermore, one end of the push rod 521 extending behind the car door is hinged to the body mounting bracket 530 via a hinge rivet 540.

[0016] This utility model also provides an automobile, including a door, a body and a door opening drive device, wherein the door opening drive device adopts the ball joint transmission type electric side door opening drive device structure as described above.

[0017] Compared with the prior art, the present invention has the following main advantages:

[0018] 1. The ball-head transmission type electric side-opening door drive device structure provided by this utility model, through the reasonable arrangement of drive components, transmission components, housing components, door mounting components and execution components, makes its overall structure compact, stable and reliable in use, can effectively avoid the shaking of the door when it is suspended, improve the user experience, and is easy to promote;

[0019] 2. The push rod assembly of this utility model is provided with a ball socket that is compatible with the ball joint of the lead screw assembly, and is provided with a spring for eliminating the gap between the ball joint and the ball socket, and a cover plate for fixing the ball socket and the spring. By continuously applying the pushing force through the spring, the ball socket can hold the ball joint tightly, prevent the ball joint from falling out and continuously provide damping force, thereby greatly improving the stability of the drive device lead screw nut and push rod transmission during the side opening process of the vehicle.

[0020] 3. The lead screw nut of this utility model is provided with a guide structure that is adapted to the guide housing. By cooperating with multiple guide surfaces of the outer wall of the lead screw nut and the inner wall of the guide housing, the sliding stability of the lead screw nut can be further improved, thereby ensuring that the extension and retraction of the push rod assembly relative to the car door is carried out smoothly.

[0021] 4. An elastic block is provided between the clearance mating surface of the lead screw nut and the guide housing of this utility model, which can play an elastic support role between the lead screw nut and the guide housing, provide holding force when the car door is suspended, and effectively isolate the influence of other structural shaking on the lead screw nut and push rod, minimizing the shaking of the push rod. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the front view structure of the side-opening door driver in an embodiment of this utility model;

[0023] Figure 2 This is a top view of the side-opening door actuator in an embodiment of the present invention;

[0024] Figure 3 for Figure 2 A cross-sectional view of the AA plane;

[0025] Figure 4 This is a schematic diagram of the guide shell structure in an embodiment of the present utility model;

[0026] Figure 5 This is a schematic diagram of the main structure of the lead screw nut in the embodiment of this utility model;

[0027] Figure 6 for Figure 5 A cross-sectional diagram of the middle BB surface;

[0028] Figure 7 This is a schematic diagram of the front view of the push rod assembly in an embodiment of this utility model;

[0029] Figure 8 for Figure 7 A cross-sectional view of the C-plane.

[0030] In the diagram: 100-Drive assembly, 200-Transmission assembly, 300-Housing assembly, 400-Door mounting assembly, 500-Actuation assembly, 310-First end housing, 320-Bearing, 330-Guide housing, 331-Fourth guide surface, 332-Fifth guide surface, 333-Sixth guide surface, 410-Second end housing, 420-Third end housing, 430-Door mounting bolt, 510-Screw assembly, 511-Screw nut, 5111-First guide surface, 5112-Second guide surface, 5113-Third guide surface, 512-Joint ball, 513-Screw, 520-Push rod assembly, 521-Push rod, 522-Ball socket, 523-Spring, 524-Cover plate, 530-Body mounting bracket, 540-Hinge rivet. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of 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. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0035] The features and performance of this application will be further described in detail below with reference to the embodiments.

[0036] This embodiment provides a ball-head drive type electric side-opening door drive device structure, such as... Figures 1-8 As shown, it mainly includes: a drive structure (drive assembly 100 and transmission assembly 200), a housing assembly 300, a door mounting assembly 400, and an actuator assembly 500;

[0037] The housing assembly 300 includes a guide housing 330; the door mounting assembly 400 connects the door to the housing assembly 300; the actuation assembly 500 includes a lead screw assembly 510 rotatably disposed within the housing assembly 300, a push rod assembly 520 movably disposed within the housing assembly 300, and a body mounting bracket 530 for fixed connection with the vehicle body. The lead screw assembly 510 includes a lead screw 513, a lead screw nut 511 cooperating with it, and a ball joint 512. The drive structure is connected to the lead screw 513 and can drive the lead screw. 513 rotates; the lead screw nut 511 has a guide structure that cooperates with the guide housing 330, so that the lead screw nut 511 is displaced relative to the lead screw 513 along the axis of the lead screw 513 during the rotation of the lead screw 513; the push rod assembly 520 includes a vehicle body mounting bracket 530, a push rod 521, a hinge rivet 540 connecting the vehicle body mounting bracket 530 and the push rod 521, a ball socket 522 connecting the joint ball 512, a spring 523 that continuously provides damping force, and a cover plate 524 that fixes the ball socket 522 and the spring 523.

[0038] Furthermore, the housing assembly 300 is connected to the car door via the door mounting assembly 400. The lead screw assembly 510 is rotatably disposed within the housing assembly 300, and the push rod assembly 520 is movably disposed within the housing assembly 300. During the process of driving the car door to open or close relative to the car body, the drive structure is activated to rotate the lead screw 513. Since the lead screw nut 511, the ball joint 512, the push rod 521, and the car body connecting bracket 530 are fixedly connected to the car body, the lead screw nut 511 remains stationary relative to the car body when the lead screw 513 rotates, while the lead screw 513 displaces relative to the axis of the lead screw nut 511, thereby causing the housing assembly 300 and the car door to displace together, causing the push rod 521 to extend relative to the car door, thus completing the opening and closing operation of the car door relative to the car body.

[0039] Furthermore, the push rod 521 is equipped with a socket 522 that can connect with the ball joint 512, a spring 523 that eliminates the gap between the ball joint and the socket, and a cover plate 524 that fixes the socket and the spring. The spring 523 continuously applies a pushing force, causing the socket 522 to grip the ball head structure of the ball joint 512 and continuously providing damping force, thereby eliminating the gap between the socket 522 and the ball head structure and preventing the ball joint 512 from dislodging.

[0040] Furthermore, in order to improve the sliding stability of the lead screw nut 511, the guide structure includes: a first guide surface 5111 located at the top of the lead screw nut 511; a second guide surface 5112 and a third guide surface 5113 located on both sides of the lead screw nut 511; the guide housing 330 includes: a fourth guide surface 331 that cooperates with the first guide surface 5111, a fifth guide surface 332 that cooperates with the second guide surface 5112, and a sixth guide surface 333 that cooperates with the third guide surface 5113.

[0041] In this embodiment, the driving structure includes a driving component 100 and a transmission component 200, wherein the driving component 100 has a driving end; the input end of the transmission component 200 is connected to the driving end of the driving component 100, and the output end of the transmission component 200 is connected to the lead screw 513. Specifically, the driving component 100 is a drive motor, and the transmission component 200 is a gearbox including components such as a transmission gear set.

[0042] Furthermore, the housing assembly 300 also includes a first end housing 310 and a second end housing 410 located at both ends of the guide housing 330, respectively. The first end housing 310 is used to connect the guide housing 330 and the transmission assembly 200, and one end of the lead screw 513 is rotatably disposed in the first end housing 310 through a bearing 320.

[0043] The door mounting assembly 400 also includes a third end housing 420 and a door mounting bolt 430. The second end housing 410 and the third end housing 420 are located at the other end of the guide housing 330. The second end housing 410 and the third end housing 420 are connected together. The third end housing 420 is fixedly connected to the door by the door mounting bolt 430.

[0044] Meanwhile, the other end of the lead screw 513 is rotatably mounted inside the second end housing 410 and is axially positioned by bearings and locking nuts. The push rod 521 is movably connected to the vehicle body mounting bracket 530 via bushings and hinged rivets 540.

[0045] Optionally, to provide holding force when the door is suspended, an elastic block is provided between the clearance mating surface of the lead screw nut 511 and the guide housing 330. The elastic block abuts against the lead screw nut 511 and the guide housing 330, forming a friction pair and providing frictional damping force to the elastic block. That is, the increased friction force when the lead screw nut 511 moves due to the elastic block provides the holding force after the door is opened to a certain angle, without any response time. Furthermore, the elastic restoring force of the elastic block can be adjusted by changing its material and size, thus allowing for customization to meet different customer holding force requirements.

[0046] Furthermore, since an elastic block is provided between the clearance mating surface of the lead screw nut 511 and the guide housing 330, and the elastic block abuts against the lead screw nut 511 and the guide housing 330, the elastic block provides elastic support between the lead screw nut 511 and the guide housing 330, which improves the stability of the lead screw nut 511. It can isolate the shaking factors that may be caused by the clearance of other structures (such as gearbox, lead screw thread backlash) from the lead screw nut 511, thereby achieving the effect of isolating it from the push rod 521 and minimizing the shaking of the push rod 521.

[0047] Optionally, in order to improve friction, the contact surface between the elastic block and the guide housing 330 is a friction surface with a concave-convex structure. The concave-convex structure on the friction surface can be a cross-shaped groove or a matrix of protrusions, etc.

[0048] In this embodiment, the friction surface is an arc-shaped surface, and it bulges outward in a direction away from the lead screw nut 511.

[0049] Optionally, to improve service life, the elastic block includes an inner layer structure and an outer layer structure. The outer layer structure wraps around the outer side of the inner layer structure and is used to contact the lead screw nut 511 and / or the guide housing 330. The hardness of the inner layer structure is lower than that of the outer layer structure. With this configuration, the friction surface can achieve compressive deformation inside the elastic block, ensuring that the elastic restoring force can effectively act on the lead screw nut 511 and / or the guide housing 330 while improving service life.

[0050] In this embodiment, the inner and outer structures can be assembled relative to each other, that is, the inner and outer structures are processed separately and then assembled to form an elastic block, or the inner and outer structures can be integrally molded, such as by injection molding (two-color injection molding).

[0051] Optionally, to ensure the sliding stability of the lead screw nut 511, the number of elastic blocks is at least two and they are symmetrically arranged with respect to the center line of the lead screw nut 511. In this embodiment, it is preferred to set the number of elastic blocks to two. Of course, the number of elastic blocks can also be set to other numbers, or they can be arranged in a certain pattern along the outer periphery of the lead screw nut 511.

[0052] To facilitate assembly, a positioning structure or a snap-fit ​​structure is provided between the elastic block and the lead screw nut 511.

[0053] Specifically, the elastic block and the lead screw nut 511 can be connected by a concave-convex fit structure. That is, the elastic block has an inner side facing the lead screw nut 511, and the inner side fits the clearance fit surface in a concave-convex fit; of course, the elastic block and the lead screw nut 511 can also be connected by adhesive.

[0054] This utility model embodiment also provides an automobile, including a door, a body, and a door opening drive device. The door opening drive device adopts the ball joint transmission type electric side door opening drive device structure described above. Since the door opening drive device structure has the above-mentioned technical effects, automobiles with the above-mentioned door opening drive device should also have the same technical effects, which will not be repeated here and are all within the scope of protection.

[0055] Furthermore, all parts of this application that are not described in detail are the same as or implemented using existing technology.

[0056] In summary:

[0057] 1. The ball-head transmission type electric side-opening door drive device structure provided by this utility model, through the reasonable arrangement of drive components, transmission components, housing components, door mounting components and execution components, makes its overall structure compact, stable and reliable in use, can effectively avoid the shaking of the door when it is suspended, improve the user experience, and is easy to promote;

[0058] 2. The push rod assembly of this utility model is provided with a ball socket that is compatible with the ball joint of the lead screw assembly, and is provided with a spring for eliminating the gap between the ball joint and the ball socket, and a cover plate for fixing the ball socket and the spring. By continuously applying the pushing force through the spring, the ball socket can hold the ball joint tightly, prevent the ball joint from falling out and continuously provide damping force, thereby greatly improving the stability of the drive device lead screw nut and push rod transmission during the side opening process of the vehicle.

[0059] 3. The lead screw nut of this utility model is provided with a guide structure that is adapted to the guide housing. By cooperating with multiple guide surfaces of the outer wall of the lead screw nut and the inner wall of the guide housing, the sliding stability of the lead screw nut can be further improved, thereby ensuring that the extension and retraction of the push rod assembly relative to the car door is carried out smoothly.

[0060] 4. An elastic block is provided between the clearance mating surface of the lead screw nut and the guide housing of this utility model, which can play an elastic support role between the lead screw nut and the guide housing, provide holding force when the car door is suspended, and effectively isolate the influence of other structural shaking on the lead screw nut and push rod, minimizing the shaking of the push rod.

[0061] The above embodiments are only used to illustrate the design concept and features of this utility model, and their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. The protection scope of this utility model is not limited to the above embodiments. Therefore, all equivalent changes or modifications made based on the principles and design ideas disclosed in this utility model are within the protection scope of this utility model.

Claims

1. A ball-head drive type electric side-opening door drive device structure, characterized in that: The system includes a drive assembly (100), a transmission assembly (200), a housing assembly (300), a door mounting assembly (400), and an actuator assembly (500). The housing assembly (300) includes a guide housing (330), which is fixedly connected to the car door via the door mounting assembly (400). The actuator assembly (500) consists of a lead screw assembly (510) and a push rod assembly (520). The lead screw assembly (510) includes a lead screw (513) rotatably disposed in the upper cavity of the guide housing (330). A lead screw nut (511) is threadedly fitted onto the lead screw (513), and the outer wall of the lead screw nut (511) is provided with a guide structure that is adapted to the inner wall of the upper cavity of the guide housing (330). The bottom of the lead screw nut (511) is fixedly connected to a ball joint (512). The push rod assembly (520) includes a push rod (521) slidably disposed in the lower cavity of the guide housing (330). One end of the push rod (521) is provided with a ball socket (522) connected to the ball joint (512), and the other end extends out of the car door and is hinged to the body mounting bracket (530). The body mounting bracket (530) is fixedly installed on the car body. The drive assembly (100) is connected to the lead screw (513) through the transmission assembly (200) to drive the lead screw (513) to rotate, and through the lead screw nut (511) to drive the push rod (521) to extend and retract relative to the car door, so as to realize the electric opening and closing of the car door relative to the car body.

2. The structure of the ball-head drive type electric side-opening door drive device according to claim 1, characterized in that: The ball socket (522) covers the outside of the articulated ball (512), and a spring (523) abuts between the articulated ball (512) and the ball socket (522). The spring (523) is installed inside the ball socket (522) through a cover plate (524).

3. The structure of the ball-head transmission type electric side-opening door drive device according to claim 1, characterized in that, The guide structure includes: a first guide surface (5111) located at the top of the lead screw nut (511), a second guide surface (5112) and a third guide surface (5113) located on both sides of the lead screw nut (511); a fourth guide surface (331) adapted to the first guide surface (5111) is provided on the top of the upper cavity inner wall of the guide housing (330); and a fifth guide surface (332) and a sixth guide surface (333) adapted to the second guide surface (5112) and the third guide surface (5113) are provided on both sides of the upper cavity inner wall of the guide housing (330).

4. The structure of the ball-head drive type electric side-opening door drive device according to claim 1, characterized in that: One end of the guide housing (330) is fixedly connected to the outer shell of the transmission assembly (200) via a first end housing (310), and the other end is fixedly connected to the third end housing (420) of the door mounting assembly (400) via a second end housing (410).

5. The structure of a ball-head drive type electric side-opening door drive device according to claim 4, characterized in that: The lead screw (513) is equipped with bearings (320) at both ends located inside the first end housing (310) and the second end housing (410).

6. The structure of a ball-head drive type electric side-opening door drive device according to claim 1, characterized in that: The drive assembly (100) includes a drive motor, the transmission assembly (200) includes a transmission gearbox, the output end of the drive motor is connected to the input end of the transmission gearbox, and the output end of the transmission gearbox is connected to the lead screw (513).

7. The structure of a ball-head drive type electric side-opening door drive device according to claim 4, characterized in that: The third end housing (420) of the door mounting assembly (400) is fixedly connected to the car door by door mounting bolts (430).

8. The structure of a ball-head drive type electric side-opening door drive device according to claim 1, characterized in that: The push rod (521) extends out of the car door and is hinged to the car body mounting bracket (530) by a hinge rivet (540).

Images