Driving device, sliding door and vehicle

By introducing a power-off brake into the vehicle's sliding door drive device and utilizing the magnetic field generating structure and friction disc assembly to generate braking force in the power-off state, the problem of the door being unable to hover is solved, and stable hovering in the power-off state is achieved, avoiding the power loss and heating risks of the electromagnetic clutch.

CN120701221APending Publication Date: 2025-09-26BYD CO LTD
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Patent Information

Application Number
CN202511001532.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-18
Publication Date
2025-09-26

AI Technical Summary

Technical Problem

The existing vehicle sliding door drive device cannot maintain hovering at any position when the power is off, causing the electromagnetic clutch to be powered on for a long time and lose power, and there is a risk of overheating and burning.

Method used

A power-off brake is used, including a magnetic field generating structure and a friction disc assembly. In the power-off state, the interaction between the magnetic field generating structure and the friction disc generates braking force, allowing the door to hover at any position. Combined with the guide mechanism and elastic parts, stable hovering is ensured.

Benefits of technology

The car door can be stably hovered in the power-off state, avoiding power loss and heating problems caused by long-term power supply of the electromagnetic clutch, and ensuring a safe and reliable hovering function.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to a driving device, a sliding door and a vehicle, the driving device is configured to be used for driving the sliding door of the vehicle, and the driving device comprises a driving mechanism and a power-off brake; wherein the driving mechanism is connected with the power-off brake, so that power is transmitted between the driving mechanism and the power-off brake. Through the power-off brake, the braking structure in the power-off brake generates braking force in a power-off state, so that the vehicle door can be in a hovering state at any position.
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