Vibration motor and terminal device

Patent metadata

Field	Value
Publication number	US-12218557-B2
Application number	US-202218017740-A
Country	US
Kind code	B2
Filing date	Sep 1, 2022
Priority date	Dec 6, 2021
Publication date	Feb 4, 2025
Grant date	Feb 4, 2025

Abstract

A vibration motor is used for a terminal device. The terminal device is provided with a middle frame having a first avoiding hole. The vibration motor includes a housing. The housing is provided with an accommodating space inside. The housing includes a first wall plate. The first wall plate is provided with a first protruding portion that protrudes outwards. The first protruding portion is hollow inside so that a first accommodating compartment is formed. The first accommodating compartment communicates with the accommodating space. When the vibration motor is mounted on the middle frame, an outer surface of the first wall plate faces the middle frame and the first protruding portion is accommodated in the first avoiding hole.

First claim

What is claimed is:

1. A vibration motor, used for a terminal device, wherein the terminal device is provided with a middle frame having a first avoiding hole; wherein the vibration motor comprises a housing with a first wall plate;
wherein an accommodating space is formed in the housing, the first wall plate is provided with a first protruding portion that protrudes outwards, the first protruding portion is hollow inside to form a first accommodating compartment is formed, and the first accommodating compartment communicates with the accommodating space; and
wherein when the vibration motor is mounted on the middle frame, an outer surface of the first wall plate faces the middle frame, and the first protruding portion is accommodated in the first avoiding hole.

2. The vibration motor of claim 1 , wherein the vibration motor further comprising: a mass block, wherein the mass block is configured to reciprocatively vibrate relative to the housing in a plane paralleling to a plane in which the first wall plate is located;
a driving assembly, wherein the driving assembly is configured to drive the mass block to reciprocatively vibrate relative to the housing in the plane paralleling to the plane in which the first wall plate is located; and
a damping structure, wherein the damping structure is configured to provide damping force for the mass block so that the mass block stops vibrating.

3. The vibration motor of claim 2 , wherein the driving assembly comprises a magnet assembly and a coil; wherein the magnet assembly is fixed to the mass block, the coil and the magnet assembly cooperate to drive the mass block, and at least part of the coil is located in the first accommodating compartment.

4. The vibration motor of claim 3 , wherein the vibration motor further comprises an electrical connection structure; and
wherein the electrical connection structure comprises a first segment, a second segment, and a third segment that are sequentially connected; wherein the first segment is fixed to a compartment bottom wall of the first accommodating compartment, and the coil is fixed to the first segment and electrically connected to the first segment; the second segment is fixed to an inner side wall of the first accommodating compartment; and part of the third segment is located outside the housing, wherein the part of the third segment located outside the housing is provided with a positive terminal and a negative terminal.

5. The vibration motor of claim 2 , wherein the housing comprises a second wall plate disposed opposite the first wall plate; and
wherein the driving assembly comprises a magnet assembly and a coil, wherein the magnet assembly is fixed to the mass block, the coil and the magnet assembly cooperate to drive the mass block, and the coil is fixedly connected to the second wall plate.

6. The vibration motor of claim 5 , wherein the damping structure is located in the first accommodating compartment, and the mass block is provided with a second protruding portion; wherein the second protruding portion is accommodated in the first accommodating compartment.

7. The vibration motor of claim 5 , wherein the mass block is provided with a through mounting slot, the magnet assembly is fixed in the mounting slot, and an end of the magnet assembly farther away from the second wall plate is accommodated in the first accommodating compartment.

8. The vibration motor of claim 7 , wherein the magnet assembly has a magnetic gap, the coil is located in the magnetic gap, and an end of the coil farther away from the second wall plate is accommodated in the first accommodating compartment.

9. The vibration motor of claim 1 , wherein the first protruding portion comprises a first top wall and a first encircling wall;
wherein the first encircling wall encircles an outer edge of the first top wall, an end of the first encircling wall farther away from the first top wall is fixedly connected to the first wall plate, an orthographic projection of the first protruding portion on the plane in which the first wall plate is located is a first projection, and an outline of the first projection is located on an inner side of an outer edge of the first wall plate.

10. The vibration motor of claim 1 , wherein the first protruding portion comprises a first top wall, a first side wall, and a second side wall;
wherein the first side wall is disposed opposite the second side wall, the first side wall and the second side wall are both located between the first top wall and the first wall plate, two ends of the first side wall in a length direction of the first side wall both extend to be level with an outer edge of the first wall plate, and two ends of the second side wall in a length direction of the second side wall both extend to be level with the outer edge of the first wall plate.

11. The vibration motor of claim 9 , wherein the first wall plate comprises a first wall plate body and an extension plate;
wherein the extension plate is disposed on an outer edge of the first wall plate body, and the extension plate and the first wall plate body are coplanar; wherein and an orthographic projection of the first avoiding hole on the plane in which the first wall plate is located is a second projection; and wherein an outline of the second projection is located on the inner side of the outer edge of the first wall plate, and the outline of the second projection and the outer edge of the first wall plate are spaced apart.

12. The vibration motor of claim 1 , wherein the terminal device is provided with a limiting structure fixed to the middle frame, and the limiting structure is provided with a second avoiding hole; and
wherein the housing comprises a second wall plate; wherein the second wall plate is opposite the first wall plate, and the second wall plate is provided with a third protruding portion that protrudes outwards; wherein the third protruding portion is hollow inside so that a second accommodating compartment is formed; wherein the second accommodating compartment communicates with the accommodating space, and when the vibration motor is mounted on the middle frame, the third protruding portion is accommodated in the second avoiding hole.

13. A vibration motor, used for a terminal device, wherein the terminal device is provided with a middle frame and a limiting structure inside, wherein the limiting structure is fixed to the middle frame, and the limiting structure is provided with a second avoiding hole; and the vibration motor comprises a housing with a first wall plate and a second wall plate that are opposite each other;
wherein an accommodating space is formed in the housing; wherein the second wall plate is provided with a third protruding portion that protrudes outwards, the third protruding portion is hollow inside so that a second accommodating compartment is formed, the second accommodating compartment communicates with the accommodating space; and
wherein when the vibration motor is mounted on the middle frame, the first wall plate faces the middle frame, the second wall plate faces the limiting structure, and the third protruding portion is accommodated in the second avoiding hole.

14. A terminal device, comprising:
a middle frame with a first avoiding hole; and
a vibration motor;
wherein the vibration motor comprises a housing with a first wall plate;
wherein an accommodating space is formed in the housing, the first wall plate is provided with a first protruding portion that protrudes outwards, the first protruding portion is hollow inside to form a first accommodating compartment is formed, and the first accommodating compartment communica

Assignees

• Honor Device Co Ltd

Inventors

• Zhang Yihe
• Yin Bangshi
• Yan Bin
• Gao Jiuliang
• Zhu Jianwei

Classifications

• H02K5/24

  specially adapted for suppression or reduction of noise or vibrations · CPC title

• H02K5/225

  Terminal boxes or connection arrangements (specially adapted for submersible motors H02K5/132) · CPC title

• H04R2400/03

  Transducers capable of generating both sound as well as tactile vibration, e.g. as used in cellular phones · CPC title

• H04R2499/11

  Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's · CPC title

• H04M1/026

  Details of the structure or mounting of specific components · CPC title