Driving device for automobile electric door and automobile

Abstract

The utility model relates to the technical field of automobile accessories, and provides a driving device for an electric door of an automobile and the automobile, the driving device comprises a shell arranged on the automobile door, and the shell is provided with a through hole; the lead screw is movably arranged in the through hole, and one end of the lead screw is hinged to the vehicle body; the worm gear is in threaded connection with the lead screw; the driving part is in threaded connection with the shell, and the output end of the driving part is inserted into the shell; the worm is arranged in the shell, a rectangular through groove is formed in one end of the worm, a rectangular connecting part is arranged at the output end of the driving part, and the rectangular through groove and the rectangular connecting part are mutually embedded so as to be used for achieving connection between the worm and the driving part; when the driving piece is started, the worm connected with the output end of the driving piece is driven to rotate, the worm gear meshed with the worm rotates along with the worm, then the lead screw is driven to move in the axial direction, and therefore the lead screw can effectively drive the automobile door to be opened or closed.

Description

Technical Field

[0001] The utility model relates to the field of automobile accessories, in particular to a driving device for an automobile electric door and an automobile. Background Art

[0002] The development of intelligent automobiles has greatly promoted the advancement of door control technology, making the traditional manual opening and closing of doors gradually shift to a more convenient and intelligent electrification direction.

[0003] Electric door technology is an important symbol of the progress of automobile intelligence. Its application is no longer limited to the field of luxury models, but has become one of the standard configurations of many mid-to-high-end models. The drive device plays a core role in realizing the automatic opening and closing functions of electric doors. An efficient and reliable drive device is crucial to the realization of the electric door function. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a driving device for an electric door of an automobile and an automobile in view of the current status of the prior art.

[0005] The technical solution adopted by the utility model to solve the above technical problems is: to propose a driving device for an electric car door, comprising:

[0006] A housing, which is arranged on the vehicle door, and has a through hole therethrough;

[0007] A screw rod, which is movably arranged in the through hole and has one end hinged to the vehicle body, and the screw rod is used to drive the vehicle door to open or close;

[0008] A worm wheel having a threaded hole therein, wherein the worm wheel is threadedly connected to the lead screw through the threaded hole;

[0009] A driving member, which is threadedly connected to the housing and has an output end inserted into the housing;

[0010] A worm is arranged in the housing, one end of the worm is provided with a rectangular through groove, the output end of the driving member is provided with a rectangular connecting portion, the rectangular connecting portion and the rectangular through groove are used for connecting the worm and the output end of the driving member, the worm wheel is meshed with the worm, and the driving member drives the lead screw to move through the worm and the worm wheel.

[0011] In the above-mentioned driving device for an electric car door, a T-shaped connector is provided at one end of the screw rod, a connecting hinge is threadedly connected to the body, and the T-shaped connector is hinged to the connecting hinge via a pin shaft.

[0012] In the above-mentioned driving device for an electric car door, a first support shaft and a second support shaft are arranged in the shell, and the two sides of the worm gear are respectively inserted on the first support shaft and the second support shaft, and the first support shaft and the second support shaft are used to provide fixation for the worm gear in the axial direction.

[0013] In the above-mentioned driving device for an electric vehicle door, a circular ring-shaped protrusion is arranged on the inner wall of the through hole, and the first supporting shaft abuts against the circular ring-shaped protrusion.

[0014] In the above-mentioned driving device for an electric car door, a limiting ring is fixedly provided in the shell, and one end face of the limiting ring is in contact with the corresponding end face of the second supporting shaft.

[0015] In the above-mentioned driving device for an electric car door, a cross groove is provided on the end surface of the limit ring that abuts against the second support shaft, and the cross groove is used to reduce the contact area between the axial limit ring and the second support shaft.

[0016] In the above-mentioned driving device for an electric car door, a magnetic ring is also sleeved on the output end of the driving member, and a detection member is also provided on the driving member. The detection member is located on the side of the magnetic ring, and the magnetic ring rotates synchronously with the output end of the driving member. The detection member is used to detect the change of the magnetic pole of the magnetic ring.

[0017] A car comprises any one of the above-mentioned driving devices for the electric car door.

[0018] Compared with the prior art, the advantages of the utility model lie in that a screw is arranged in a shell, one end of which is hinged on the vehicle body; a worm wheel is threadedly connected to the screw; a driving member is threadedly connected to the shell and the output end is inserted in the shell; a worm is arranged in the shell, one end of the worm is provided with a rectangular through groove, the output end of the driving member is provided with a rectangular connecting portion, the rectangular through groove and the rectangular connecting portion are engaged with each other to realize the connection between the worm and the driving member; when the driving member is started, it drives the worm connected to its output end to rotate, and the worm wheel meshing with the worm rotates accordingly, thereby driving the screw to move along the axial direction, so that the screw can effectively drive the vehicle door to open or close. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the present solution arranged on a vehicle door;

[0020] Figure 2 It is a three-dimensional diagram of this scheme;

[0021] Figure 3 yes Figure 2 A stereogram of the hidden shell;

[0022] Figure 4 It is a three-dimensional diagram of the driving member in this scheme;

[0023] Figure 5 It is a stereogram of the worm of this scheme;

[0024] Figure 6 It is a three-dimensional diagram of a part of the shell of this scheme;

[0025] Figure 7 It is a three-dimensional diagram of the second support shaft and the limiting ring of this scheme.

[0026] In the figure, 1. vehicle door; 2. housing; 3. screw; 4. worm gear; 5. driving member; 6. worm; 7. rectangular through groove; 8. rectangular connecting part; 9. T-shaped connecting member; 10. connecting hinge; 11. first supporting shaft; 12. second supporting shaft; 13. circular ring protrusion; 14. limiting ring; 15. cross groove; 16. magnetic ring; 17. detection member. DETAILED DESCRIPTION

[0027] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0028] like Figures 1 to 7 As shown, the utility model is a driving device for an electric vehicle door, comprising:

[0029] A shell 2 is arranged on the vehicle door 1, and the shell 2 has a through hole extending therethrough; a screw rod 3 is movably arranged in the through hole and one end of which is hinged to the vehicle body, and the screw rod 3 is used to drive the vehicle door 1 to open or close; a worm wheel 4 is provided with a threaded hole, and the worm wheel 4 is threadedly connected to the screw rod 3 through the threaded hole; a driving member 5 is threadedly connected to the shell 2 and the output end is inserted in the shell 2; a worm 6 is arranged in the shell 2, one end of the worm 6 is provided with a rectangular through groove 7, and the output end of the driving member 5 is provided with a rectangular connecting portion 8, and the rectangular connecting portion 8 and the rectangular through groove 7 are used for connecting the worm 6 with the output end of the driving member 5, the worm wheel 4 is meshed with the worm 6, and the driving member 5 drives the screw rod 3 to move through the worm 6 and the worm wheel 4.

[0030] The specific operation of the driving device in this scheme for realizing the electric door function is that, first, after the door opening or closing signal is received by the vehicle body control module (BCM), the BCM will forward this signal to the actuator electronic control unit (ECU) of the designated door 1, and the ECU will then activate the driving member 5. After the driving member 5 is started, the worm 6 connected to its output end will then rotate synchronously, and the worm wheel 4 meshing with the worm 6 will also start to rotate, thereby driving the screw rod 3 to move along the axial direction. In this way, the screw rod 3 can effectively drive the door 1 to open or close, wherein the connection between the worm 6 and the driving member 5 is through the rectangular through groove 7 at the end of the worm 6 and the rectangular connecting end of the driving member 5. The connection parts 8 are interlocked with each other. Compared with directly processing the worm 6 on the driving member 5 or using interference fit assembly, the connection method of the rectangular through groove 7 and the rectangular connecting part 8 is not only simpler and faster in processing and assembly, but also ensures the verticality and concentricity of the assembly of the driving member 5 and the housing 2, thereby avoiding the driving member 5 from working smoothly or even making abnormal noises, and the unstable mechanical internal resistance of the actuator. It is worth noting that the design width of the rectangular through groove 7 is slightly larger than the width of the rectangular connecting part 8 to ensure that when subjected to high torque operation, the risk of deformation caused by stress concentration at the connection part is reduced, thereby enhancing the stability of the connection and the overall reliability of the system. The driving member 5 is preferably a motor.

[0031] Furthermore, a T-shaped connector 9 is provided at one end of the screw rod 3, and a connecting hinge 10 is threadedly connected to the vehicle body. The T-shaped connector 9 is hinged on the connecting hinge 10 through a pin shaft. When the driving member 5 causes the screw rod 3 to move axially, it further drives the connecting hinge 10 to move, thereby realizing smooth opening and closing of the vehicle door 1.

[0032] Furthermore, a first support shaft 11 and a second support shaft 12 are provided in the shell 2, and the two sides of the worm gear 4 are respectively inserted on the first support shaft 11 and the second support shaft 12. The first support shaft 11 and the second support shaft 12 are used to provide axial fixation for the worm gear 4, ensuring the stability and precise guidance of the worm gear 4. The worm gear 4 is a key component in the transmission system. When working, it needs to withstand the power transmitted from the worm 6 and various dynamic loads generated during the opening and closing process of the door 1. Therefore, providing stable axial support is very important to maintain the reliability of the entire drive system and extend its service life. The setting of the first support shaft 11 and the second support shaft 12 ensures the stable operation of the worm gear 4 under complex working conditions, thereby improving the performance and reliability of the electric door drive device in this scheme.

[0033] Specifically, a circular annular protrusion 13 is provided on the inner wall of the through hole in the shell 2, and the first support shaft 11 abuts against the circular annular protrusion 13, thereby ensuring that the position of the first support shaft 11 after installation is more stable and preventing the first shaft from unnecessary axial movement or rotation during use, thereby improving the stability of the entire structure.

[0034] Specifically, a limit ring 14 is fixedly provided in the shell 2, and one end face of the limit ring 14 is in contact with the corresponding end face of the second support shaft 12. The limit ring 14 is pressed into the shell 2 through an interference fit. The setting of the limit ring 14 is mainly to limit the position of the second support shaft 12 in the axial direction to ensure that it works stably within a preset range and prevent displacement caused by excessive vibration or external force.

[0035] Furthermore, a cross groove 15 is provided on the end surface where the limit ring 14 and the second support shaft 12 are in contact. The cross groove 15 is used to reduce the contact area between the limit ring 14 and the second support shaft 12, increase the flatness of the contact between the two, optimize the interaction between the components, reduce unnecessary wear, and improve the overall operation smoothness and long-term stability.

[0036] Furthermore, the output end of the driving member 5 is also sleeved with a magnetic ring 16, and the driving member 5 is also provided with a detection member 17, which is located on the side of the magnetic ring 16. The magnetic ring 16 rotates synchronously with the output end of the driving member 5, and the detection member 17 is used to detect the change of the magnetic pole of the magnetic ring 16. The detection member 17 is preferably a Hall effect sensor, and the magnetic ring 16 is pressed on the output end of the driving member 5 by interference fit, and its surface has alternatingly arranged N poles and S poles, forming a periodically changing magnetic field. When the driving member 5 is started, it drives the magnetic ring 16 to rotate synchronously, and the detection member 17 detects the change of the magnetic pole of the magnetic ring 16 and outputs a signal. The detection signal output by the detection member 17 can realize accurate monitoring of the rotation speed, rotation direction and absolute position of the driving member 5, thereby helping the system to adjust the power supply status of the motor in real time, ensuring accurate control of the opening and closing action of the door 1, such as constant speed, accurate position, and timely taking of protective measures under abnormal circumstances.

[0037] The present solution also proposes a car, comprising any one of the above-mentioned driving devices for an electric car door.

[0038] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0039] In addition, in the present invention, the descriptions of "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0042] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the scope defined by the spirit of the present invention.

Claims

1. A driving device for an electric vehicle door, characterized in that: include: A housing, which is arranged on the vehicle door, and has a through hole therethrough; A screw rod, which is movably arranged in the through hole and has one end hinged to the vehicle body, and the screw rod is used to drive the vehicle door to open or close; A worm wheel having a threaded hole therein, wherein the worm wheel is threadedly connected to the lead screw through the threaded hole; A driving member, which is threadedly connected to the housing and has an output end inserted in the housing; A worm is arranged in the housing, one end of the worm is provided with a rectangular through groove, the output end of the driving member is provided with a rectangular connecting portion, the rectangular connecting portion and the rectangular through groove are used for connecting the worm and the output end of the driving member, the worm wheel is meshed with the worm, and the driving member drives the lead screw to move through the worm and the worm wheel.

2. A driving device for an electric vehicle door as claimed in claim 1, characterized in that: A T-shaped connector is disposed at one end of the screw rod, a connecting hinge is threadedly connected to the vehicle body, and the T-shaped connector is hinged to the connecting hinge via a pin shaft.

3. A driving device for an electric vehicle door as claimed in claim 1, characterized in that: A first support shaft and a second support shaft are arranged in the housing, and two sides of the worm gear are respectively inserted into the first support shaft and the second support shaft, and the first support shaft and the second support shaft are used to fix the worm gear in the axial direction.

4. A driving device for an electric vehicle door as claimed in claim 3, characterized in that: A circular ring-shaped protrusion is arranged on the inner wall of the through hole, and the first supporting shaft abuts against the circular ring-shaped protrusion.

5. A driving device for an electric vehicle door as claimed in claim 3, characterized in that: A limiting ring is fixedly arranged in the shell, and one end surface of the limiting ring is fitted with a corresponding end surface of the second supporting shaft.

6. A driving device for an electric vehicle door as claimed in claim 5, characterized in that: A cross groove is arranged on the end surface of the limiting ring which is in contact with the second supporting shaft, and the cross groove is used to reduce the contact area between the limiting ring and the second supporting shaft in the axial direction.

7. A driving device for an electric vehicle door as claimed in claim 1, characterized in that: The output end of the driving member is also sleeved with a magnetic ring, and the driving member is also provided with a detection member, which is located on the side of the magnetic ring. The magnetic ring rotates synchronously with the output end of the driving member, and the detection member is used to detect the change of the magnetic pole of the magnetic ring.

8. A car, characterized in that: It comprises a driving device for an electric vehicle door as claimed in any one of claims 1 to 7.

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