A side-hinged door operator using an in-built hysteresis motor

Abstract

The utility model relates to the technical field of automobile parts, and relates to a side door actuator using built-in magnetic hysteresis motor, the utility model discloses a shell, drive motor, execution subassembly, connector, the execution subassembly sets up the right side at the upper end of shell, drive motor sets up the lower extreme of shell, and the connector is connected in the lower extreme left side of shell and is connected with drive motor electricity, drive motor's output fixed connection has the worm, the worm gearing transmission has the turbine, the screw rod drive subassembly includes screw rod and nut, the output of screw rod connects turbine, the nut is set up on screw rod and is fixedly connected with execution subassembly, drive motor inside still includes magnetic hysteresis ware structure, drive motor's output axis and the axis of screw rod are not collinear and set up, the axis of worm and the axis of turbine is perpendicular and sets up.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and specifically to a side-opening door actuator using a built-in hysteresis motor. Background Technology

[0002] As automotive demands for intelligence and comfort increase, noise levels in electric side-opening door actuators using built-in hysteresis motors have become a significant factor affecting user experience. Current mainstream actuators combine a motor with external brake pads for braking: when power is off, the brake pads mechanically press against the transmission components to achieve braking. However, this mechanical contact generates considerable noise (typically exceeding 60 decibels), and the brake pads require periodic replacement after wear, undoubtedly increasing maintenance costs. The main problems with traditional solutions are noise pollution from mechanical friction and the limited lifespan of brake pads, making it difficult to meet the quietness and reliability requirements of high-end vehicles. Utility Model Content

[0003] This invention addresses the problems of existing technologies by providing a side-opening door actuator that uses a built-in hysteresis motor.

[0004] The objective of this utility model can be achieved through the following technical solution: A side-opening door actuator using a built-in hysteresis motor, comprising a housing, a drive motor, an actuator assembly, and a connector; the actuator assembly is located on the upper right side of the housing, the drive motor is located on the lower end of the housing, and the connector is connected to the lower left side of the housing and electrically connected to the drive motor; a worm gear is fixedly connected to the output end of the drive motor, and the worm gear meshes with a worm wheel; the lead screw drive assembly includes a lead screw and a nut, the output end of the lead screw is connected to the worm wheel, the nut is sleeved on the lead screw and fixedly connected to the actuator assembly; the drive motor also includes a hysteresis structure inside; the output axis of the drive motor is not collinear with the axis of the lead screw, and the axis of the worm gear is perpendicular to the axis of the worm wheel. In a further improvement, the drive motor also includes a stator assembly and a rotor assembly. The rotor assembly is sleeved on the motor shaft, and the stator assembly is disposed outside the rotor assembly. The hysteresis structure includes a magnetic ring and a fixing bracket. The magnetic ring is sleeved on the motor shaft of the drive motor, and the fixing bracket fixes the magnetic ring between the stator assembly and the rotor assembly of the drive motor. As a further improvement, the magnetic ring is made of a hard magnetic alloy.

[0005] In a further improvement, the actuating component includes a universal joint bracket and a push rod, with a nut fixedly connected to the inner side of the push rod and the universal joint bracket connected to the outer side of the push rod.

[0006] Compared with the prior art, the advantages of this utility model using a side-opening door actuator with a built-in hysteresis motor are as follows: The contactless braking of the hysteresis completely eliminates the mechanical friction noise of traditional brake pads, reducing actuator noise to below 60 decibels and significantly improving the user experience. The hard magnetic alloy ring requires no lubrication and has no wearing parts, resulting in a longer lifespan and significantly reduced maintenance costs. The built-in hysteresis simplifies the external structure, eliminating the need for brake pads and related installation procedures, reducing actuator size and manufacturing costs. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the structure of the side-opening door actuator of this utility model. Figure 2 This is a schematic diagram of the structure of the side-opening door actuator II used in this utility model. Figure 3 for Figure 2 Structural schematic diagram of position 1 sectional view Figure 4 for Figure 2 Schematic diagram of the structure in the second sectional view In the diagram, 11-housing, 12-drive motor, 13-actuator assembly, 14-connector, 15-worm gear, 16-worm wheel, 17-lead screw drive assembly, 18-lead screw, 19-nut, 20-hysteresis structure, 21-stator assembly, 22-rotor assembly, 23-motor shaft, 24-magnetic ring, 25-fixed bracket, 26-universal connector bracket, 27-push rod. Detailed Implementation

[0008] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model; unless otherwise expressly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly, for example, they can refer to fixed connections or detachable connections, etc. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0009] The following describes the embodiments and appendices. Figures 1-4 The technical solution of this utility model will be further described below.

[0010] Example 1 A side-opening door actuator using a built-in hysteresis motor includes a housing 11, a drive motor 12, an actuator assembly, and a connector 15. The actuator assembly is located on the upper right side of the housing 11, the drive motor 12 is located on the lower end of the housing 11, and the connector 15 is connected to the lower left side of the housing 11 and electrically connected to the drive motor 12. A worm gear 22 is fixedly connected to the output end of the drive motor 12, and the worm gear 22 meshes with a worm wheel 23. A lead screw drive assembly 17 includes a lead screw 19 and a nut 20. The output end of the lead screw 19 is connected to the worm wheel 23, and the nut 20 is sleeved on the lead screw 19 and fixedly connected to the actuator assembly. The drive motor 12 also includes a hysteresis structure 18. The output axis of the drive motor 12 is not collinear with the axis of the lead screw 19, and the axis of the worm gear 22 is perpendicular to the axis of the worm wheel 23. like Figures 1-4 As shown, the working principle of this utility model is as follows: After the drive motor 12 is powered on, the stator assembly 21 generates a rotating magnetic field, which drives the rotor assembly 22 to rotate. The rotor shaft 23 is driven by the meshing of the worm gear 15 and the worm wheel 16, which converts the high speed and low torque of the motor into the low speed and high torque of the worm wheel. The worm wheel further drives the lead screw 18 to rotate, and the rotational motion is converted into the linear motion of the push rod 27 through the nut 19, which ultimately pushes the side door to open or close.

[0011] The worm gear 15 and worm wheel 16 are arranged perpendicularly, and the output axis of the drive motor is not collinear with the lead screw axis. This spatial layout optimizes the structural compactness of the actuator. At the same time, the self-locking characteristic of the worm gear transmission is used to prevent the side door from sliding accidentally due to gravity or external force, thereby improving safety.

[0012] The hysteresis structure 20 inside the motor consists of a magnetic ring 24 made of hard magnetic alloy and a fixed bracket 25. When the motor is powered on, the magnetic ring 24 rotates with the motor shaft 23, and the stator magnetic field causes the magnetic domains inside the magnetic ring to continuously adjust their orientation. Due to the internal friction between the magnetic molecules of the hard magnetic alloy, the change in the orientation of the magnetic domains lags behind the change in the magnetic field, forming a hysteresis angle, which in turn generates a resistance torque opposite to the direction of rotation, thus achieving braking. The remanent magnetization of the hard magnetic alloy allows the magnetic ring to remain magnetized after the power is turned off, continuously providing resistance torque to ensure the side door is stably hovered without the need for an additional power source.

[0013] The contactless braking of the hysteresis completely eliminates the mechanical friction noise of traditional brake pads, reducing actuator noise to below 60 decibels and significantly improving the user experience. The hard magnetic alloy ring requires no lubrication and has no wearing parts, resulting in a longer lifespan and significantly reduced maintenance costs. The built-in hysteresis simplifies the external structure, eliminating the need for brake pads and related installation procedures, reducing actuator size and manufacturing costs.

[0014] In a further preferred embodiment, the drive motor 12 further includes a stator assembly 21 and a rotor assembly 22. The rotor assembly 22 is sleeved on the motor shaft 23, and the stator assembly 21 is disposed outside the rotor assembly 22. The hysteresis structure 20 includes a magnetic ring 24 and a fixing bracket 25. The magnetic ring 24 is sleeved on the motor shaft 23 of the drive motor 12, and the fixing bracket 25 fixes the magnetic ring 24 between the stator assembly 21 and the rotor assembly 22 of the drive motor 12. The magnetic ring 24 is installed between the stator assembly 21 and the rotor assembly 22 through the fixing bracket 25 and is coaxial with the motor shaft 23. When the motor is running, the air gap between the magnetic ring and the stator magnetic field generates a hysteresis torque, realizing contactless braking.

[0015] As a further preferred embodiment, the magnetic ring 27 is made of a hard magnetic alloy. The hard magnetic alloy has high coercivity and remanence, ensuring that the magnetic ring maintains a stable hysteresis effect even after repeated magnetization.

[0016] In a further preferred embodiment, the actuation component 13 includes a universal joint bracket 26 and a push rod 27. A nut 19 is fixedly connected to the inner side of the push rod 27, and the universal joint bracket 26 is connected to the outer side of the push rod 27. The inner side of the push rod 27 is rigidly connected to the nut 19, and the outer side is connected to the side door hinge via the universal joint bracket 26. The linear motion of the nut 19 is converted into the rotational motion of the side door through the universal joint.

[0017] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A side-opening door actuator using a built-in hysteresis motor, characterized in that: The device includes a housing, a drive motor, an actuator, and a connector. The actuator is located on the upper right side of the housing, the drive motor is located on the lower end of the housing, and the connector is connected to the lower left side of the housing and electrically connected to the drive motor. A worm gear is fixedly connected to the output end of the drive motor, and the worm gear meshes with a worm wheel. The lead screw drive assembly includes a lead screw and a nut. The output end of the lead screw is connected to the worm wheel, and the nut is sleeved on the lead screw and fixedly connected to the actuator. The drive motor also includes a hysteresis structure. The output axis of the drive motor is not collinear with the axis of the lead screw, and the axis of the worm gear is perpendicular to the axis of the worm wheel.

2. The side-opening door actuator using a built-in hysteresis motor according to claim 1, characterized in that: The drive motor further includes a stator assembly and a rotor assembly. The rotor assembly is sleeved on the motor shaft, and the stator assembly is disposed outside the rotor assembly. The hysteresis structure includes a magnetic ring and a fixing bracket. The magnetic ring is sleeved on the motor shaft of the drive motor, and the fixing bracket fixes the magnetic ring between the stator assembly and the rotor assembly of the drive motor.

3. The side-opening door actuator using a built-in hysteresis motor according to claim 2, characterized in that: The magnetic ring is made of a hard magnetic alloy.

4. The side-opening door actuator using a built-in hysteresis motor according to claim 1, characterized in that: The actuator includes a universal joint bracket and a push rod, with a nut fixedly connected to the inner side of the push rod and the universal joint bracket connected to the outer side of the push rod.

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