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Linear vibrator

專利號
US10097072B2
公開日期
2018-10-09
申請人
Hongfu Xu; Zhilin Chai; Na Wu（SG Singapore）
發(fā)明人
Hongfu Xu; Zhilin Chai; Na Wu
IPC分類
H02K33/12; H02K33/16; H02K33/18
技術(shù)領(lǐng)域
vibrator,moveable,cushion,elastic,linear,unit,in,arm,housing,member
地域： Shenzhen

摘要

A linear vibrator includes a stator having a housing including a receiving space; a moveable unit received in the receiving space; an elastic member having one end connecting to the moveable unit and another end connecting to the stator for suspending the moveable unit in the receiving space; and a cushion arranged between the moveable unit and the housing, the cushion comprising a plurality of parts having different stiffness.

說明書

1 2 3 4 5 6
FIELD OF THE INVENTION

The present invention relates to vibrators for generating tactile vibrations, more particularly to a linear vibrator used in a portable consumer electronic device.

DESCRIPTION OF RELATED ART

Consumer products, such as mobile phones and portable multi-media players, generally include vibrators for generating tactile feedback. For example, a mobile phone has a vibrator for generating vibration while a call is called in, and a portable multi-media player has a touch screen having vibrators for getting tactile feedback.

A vibrator has a moving unit moving along a linear direction is called linear vibrator. Linear vibrators are widely used in consumer products and are disclosed in U.S. Pat. No. 6,466,682 B2 issued on Oct. 15, 2002, and U.S. Pat. No. 7,099,489 B2 issued on Aug. 29, 2006. The vibrator is mounted on a mounting surface of a printed circuit board, and the moving unit thereof is actuated to move along a direction perpendicular to the mounting surface. Another linear vibrator includes a moveable unit suspended by a plurality of elastic members for being movable along a direction parallel to a mounting surface of a printed circuit board from which vibration signals are transmitted.

While working, the vibrator needs to be provided with sufficient driving force to drive the movable unit to generate strong vibrations. Exceeding driving force would drive the moveable unit to strike the housing of the vibrator thereby causing noises.

Accordingly, an improved linear vibrator capable of avoiding striking noises and shortening return time is desired.

BRIEF DESCRIPTION OF THE DRAWINGS

權(quán)利要求

1
What is claimed is:1. A linear vibrator, comprising:a stator having a housing including a receiving space;a moveable unit received in the receiving space;an elastic member having one end connecting to the moveable unit and another end connecting to the stator for suspending the moveable unit in the receiving space;a cushion arranged between the moveable unit and the housing, the cushion comprising a plurality of parts having different stiffness,wherein the cushion includes a through hole therein, the through hole passes through at least two different stiffness parts.2. The linear vibrator as described in claim 1, wherein the parts are arranged in an order that the stiffness thereof increase gradually.3. The linear vibrator as described in claim 1, wherein the parts are arranged in an order that the stiffness thereof increase gradually and then decrease gradually.4. The linear vibrator as described in claim 1, wherein the cushion is positioned by the housing, and a part thereof having a relatively lower stiffness faces the moveable unit.5. The linear vibrator as described in claim 1, wherein the cushion is arranged on the moveable unit, and a part thereof having a relatively lower stiffness faces the housing.6. The linear vibrator as described in claim 1, wherein the elastic member includes a first elastic arm connecting to the moveable unit, a second elastic arm connecting to the stator, and a third elastic arm connecting the first elastic arm to the second elastic arm.7. The linear vibrator as described in claim 6 further comprising a gasket disposed on the first elastic arm or the second elastic arm.8. The linear vibrator as described in claim 6, wherein the third elastic arm comprises a deforming part and a damping member attached to the deforming part.
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