Lead screw structure, force feedback apparatus and operating handle

By adopting a screw structure with multiple sets of threaded fitting structures in the force feedback device, the friction force and contact area are adjusted, and the problem of insufficient vibration feedback in the prior art is solved, and a more realistic tactile feedback effect in the virtual world is achieved.

WO2025007798A1PCT designated stage expired Publication Date: 2025-01-09GOERTEK INC
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Patent Information

Application Number
PCT/CN2024/101968
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-07-03
Filing Date
2024-06-27
Publication Date
2025-01-09

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    Figure CN2024101968_09012025_PF_FP_ABST
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Abstract

A lead screw structure (100), a force feedback apparatus (1000) and an operating handle. The lead screw structure (100) comprises a lead screw (1) and a sleeve (2) sleeved on the lead screw (1); a plurality of threaded fitting structures are formed between the sleeve (2) and the lead screw (1); at least one of the threaded fitting structures comprises a first threaded protrusion and a first threaded groove; two side surfaces of the first threaded protrusion are correspondingly fitted with two side wall surfaces of the first threaded groove, so as to form two fitting surface sets (3); the forces of friction of the two fitting surface sets (3) are not equal, so that the force of friction between the lead screw (1) and the sleeve (2) when moving in the same direction is different from the force of friction between the lead screw (1) and the sleeve (2) when moving in opposite directions, such that one of the two fitting surface sets (3) has relatively large resistance so that a force feedback apparatus (1000) provides relatively large resistance, and the other fitting surface set (3) has relatively small resistance so as to reduce the total frictional resistance between the lead screw (1) and the sleeve (2), reducing the energy loss of the force feedback apparatus (1000), thus facilitating improvement of the vibration feedback effect of the force feedback apparatus (1000) and avoiding insufficient vibration feedback of the force feedback apparatus (1000).
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Citation Information

Patent Citations

  • Force feedback device and handle

    CN116271792A

  • Screw rod structure, force feedback device and operating handle

    CN116928308A

  • actuator of a rear-axle steering system and method for influencing the steering angle

    DE102016204562A1

  • Improvements in Self-Adjusting Mechanisms

    GB1169577A

  • Drive arrangement for motor-driven movement of a wing of a motor vehicle

    WO2020020987A1

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