US12572184USUSPTO Grant XML

Damping mechanism, hinge apparatus, and foldable electronic device

A damping mechanism includes a fixed base, a damping swing arm, a rolling body, and a push-pressing apparatus. The damping swing arm is rotatably disposed on the fixed base by using a damping member. A first concave portion, a protrusion, and a second concave portion are disposed on a side wall of the damping member, and the protrusion has a guide surface inclined relative to an axis such that when the push-pressing apparatus squeezes the guide surface of the protrusion to the rolling body, the guide surface enhances a push-pressing force of the push-pressing apparatus, so that the damping member is subject to greater pressure, and torque damping is increased as the damping swing arm rotates.

Patent

Brief

Patent brief

Problem

How can vibration in electric motors and rotors be reduced?

Novelty

The damping swing arm is rotatably disposed on the fixed base by using a damping member.

Uses

Motor mounts, Equipment isolation, Compact machinery

Assignee

HUAWEI TECHNOLOGIES CO., LTD.

Published

Mar 10, 2026

Inventors

Kenji Nagai, Akio Ishiguro, Hui Lin

Domain

Electromechanical systems

Plain-English summary

Problem

How can vibration in electric motors and rotors be reduced?

Solution

damping mechanism includes a fixed base, a damping swing arm, a rolling body, and a push-pressing apparatus.

Key novelty

The damping swing arm is rotatably disposed on the fixed base by using a damping member.

Applications

Motor mountsEquipment isolationCompact machinery

Relevant search intents

damping

Claims preview

1 . A damping mechanism, comprising: a fixed base; a damping swing arm comprising a first end; a damping member disposed at the first end rotatably connected to the fixed base, configured to permit the damping swing arm to rotate between a folded position and an unfolded position around an axis relative to the fixed base, and wherein the damping member comprises: a circumferential outer wall surface; a first concave portion disposed on the circumferential outer wall surface; a second concave portion disposed on the circumferential outer wall surface; a protrusion positioned between the first concave portion and the second concave portion, wherein the protrusion comprises a guide surface inclined relative to the axis; and a rolling body configured to: abut the first concave portion when the damping swing arm is at the folded position; abut the second concave portion when the damping swing arm is at the unfolded position; and roll onto and abut the guide surface; and a push-pressing apparatus abutting against the rolling body and configured to: apply an abut-pressing force to the damping member through the rolling body in response to the rolling body abutting against the first concave portion, the protrusion, and the second concave portion to move with the rolling body to squeeze the push-pressing apparatus in a direction along the axis when the damping swing arm rotates to a position between the folded position and the unfolded position. 2 . The damping mechanism of claim 1 , wherein the push-pressing apparatus comprises: a sliding member located at a second end of the damping member and configured to slide along the axis relative to the fixed base; a contact portion disposed on the sliding member, wherein the contact portion comprises a push surface configured to abut the rolling body; and a push-pressing member disposed on a side of the sliding member that faces away from the second end and configured to apply a push-pressing force to the sliding member, wherein the rolling body is further configured to roll onto the guide surface of the protrusion from the first concave portion and the second concave portion, and wherein the sliding member is configured to move with the rolling body in the direction away from the damping member relative to the fixed base to press the push-pressing member in the direction away from the damping member when the damping swing arm rotates to the position between the folded position and the unfolded position. 3 . The damping mechanism of claim 2 , wherein the contact portion is located on sides of the first concave portion, the protrusion, and the second concave portion that face away from the axis, wherein the fixed base comprises an abutting surface disposed toward the first concave portion, the protrusion, and the second concave portion, wherein the abutting surface abuts against a side of the rolling body or the contact portion that faces away from the axis, and wherein the rolling body abuts against an outer wall surface of a side wall of the damping member in a direction facing the axis.

Linked approaches

Damping mounts

Isolation and damping structures that absorb motor vibration.

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