Vibrator and electronic device including the same

• US 9,219,401 B2
• Filed: 07/17/2013
• Issued: 12/22/2015
• Est. Priority Date: 03/15/2013
• Status: Active Grant

• Current Assignee: MPlus Co., Ltd.
• Original Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Inventors: Kim, Yong Tae, Park, Kyung Su, Hong, Jung Taek
• Primary Examiner(s): Lam, Thanh
• Application Number:
  US13/944,417
• Publication Number:
  US 20140265651A1
• Time in Patent Office: 888 Days
• Field of Search: 310/15, 310/25, 310 36- 37
• US Class Current: 1/1
• CPC Class Codes: H02K 33/16 with polarised armatures moving in alternate directions by reversal or energisation of a single coil system

Abstract

There are provided a vibrator and an electronic device including the same, the vibrator including a housing having an internal space; a shaft included in the internal space; a vibrating part suspended in the internal space by elastic members at both ends thereof, including a magnetic field part, and having a bearing member slidably and movably installed on the shaft; and a coil generating vibrations of the vibrating part through electromagnetic interaction with the magnetic field part and provided on an outer peripheral surface of the shaft while facing the magnetic field part.

Claims

1. A vibrator, comprising:

a housing having an internal space;

a shaft included in the internal space;

a vibrating part suspended in the internal space by elastic members at both ends thereof, including a magnetic field part, and having a bearing member slidably and movably installed on the shaft; and

a coil generating vibrations of the vibrating part through electromagnetic interaction with the magnetic field part and provided on an outer peripheral surface of the shaft while facing the magnetic field part.

2. The vibrator of claim 1, wherein the vibrating part further includes a mass body.

3. The vibrator of claim 1, further comprising a vibrating part case enclosing the vibrating part.

4. The vibrator of claim 1, wherein the coil is disposed at one end of the shaft in a length direction thereof, and

the magnetic field part is disposed at one end of the vibrating part so as to be associated with the coil.

5. The vibrator of claim 4, wherein the coil is disposed in the magnetic field part.

6. The vibrator of claim 5, wherein the magnetic field part has an inner diameter greater than an outer diameter of the coil.

7. The vibrator of claim 4, wherein at least one end of the coil in the length direction thereof is provided with a yoke formed of a magnetic material.

8. The vibrator of claim 4, wherein the magnetic field part includes a magnet.

9. The vibrator of claim 8, wherein at least one end of the magnet in a length direction thereof is provided with a yoke formed of a magnetic material.

10. An electronic device, comprising:

a display module displaying an image according to user selection;

a main body case accommodating the display module; and

a vibrator mounted in the main body case and providing vibrations according to user selection by including a housing having an internal space, a shaft included in the internal space, a vibrating part suspended in the internal space by elastic members at both ends thereof, including a magnetic field part, and having a bearing member slidably and movably installed on the shaft, and a coil generating vibrations of the vibrating part through electromagnetic interaction with the magnetic field part and provided on an outer peripheral surface of the shaft while facing the magnetic field part.