Application device

Patent metadata

Field	Value
Publication number	US-12445780-B2
Application number	US-202017999880-A
Country	US
Kind code	B2
Filing date	Nov 7, 2020
Priority date	May 25, 2020
Publication date	Oct 14, 2025
Grant date	Oct 14, 2025

Abstract

Disclosed is an application device, comprising a plurality of elastic members, each elastic member comprises a first connecting portion, a second connecting portion and a deformation portion therebetween, the first connecting portion and the second connecting portion are respectively connected to different members in the application device, and the different members are movable or fixed relative to each other, wherein the deformation portion is formed by extending from a first end to a second end in a straight line and/or a curve in the same direction or in different directions. According to the present disclosure, the manufacturing is simple and convenient, thinning of product is facilitated, and the elastic members maintain good compliance, without influencing the vibration of a vibration unit. At least one elastic member is widened and/or has at least two cross sections with different sizes, thereby reducing the stress concentration, and eliminating the resonance.

First claim

What is claimed is:

1. An application device comprising a plurality of elastic members, each elastic member comprises a first connecting portion, a second connecting portion and a deformation portion between the first connecting portion and the second connecting portion,
wherein the first connecting portion and the second connecting portion are respectively connected to different members in the application device, and the different members are movable relative to each other, or the different members are fixed relative to each other,
wherein the deformation portion comprises a first end connected to one of the first connecting portion and the second connecting portion, and a second end connected to the other one of the first connecting portion and the second connecting portion,
wherein the deformation portion is formed by extending from the first end to the second end in a curve in the same direction or in different directions, and
wherein a cross-sectional size of at least one of the elastic members is larger than a cross-sectional size of remaining elastic member, and/or at least one of the elastic members has at least two cross sections having different sizes.

2. The application device of claim 1 , wherein in any one of the elastic members, areas close to the first connecting portion and the second connecting portion of the deformation portion form two widen areas correspondingly, an area of the deformation portion between the two widen areas forms a non-widen area, and a cross-sectional width of the deformation portion in the widen area is larger than a cross-sectional width of the deformation portion in the non-widen area.

3. The application device of claim 1 , wherein in each of the elastic members, the deformation portion has a planar structure, and the deformation portion, the first connecting portion and the second connecting portion are located in the same horizontal plane.

4. The application device of claim 3 , wherein all of the elastic members in each elastic member group are located in the same horizontal plane.

5. The application device of claim 1 , wherein the elastic members have wire-like bending structures.

6. The application device of claim 5 , wherein the deformation portion has an S-shaped bending structure formed by extending from the first end to the second end in a straight line.

7. The application device of claim 6 , wherein a width of the deformation portion gradually increases in a direction from the first connecting portion to the second connecting portion, and extension lines of two sides of the deformation portion in a width direction intersect at a point in a direction in which the first connecting portion is far away from the second connecting portion, to form an acute angle, or
wherein a width of the deformation portion gradually decreases in the direction from the first connecting portion to the second connecting portion, and the extension lines of the two sides of the deformation portion in the width direction intersect at a point in a direction in which the second connecting portion is far away from the first connecting portion, to form an acute angle.

8. The application device of claim 6 , wherein a bending line segment is formed by bending the deformation portion once, and ends of two adjacent bending line segments are connected by a circular arc segment, and line widths of the circular arc segment and two bending line segments connected to the circular arc segment are equal to each other or gradually change.

9. The application device of claim 8 , wherein line widths of the first connecting portion, the second connecting portion, the bending line segment and the circular arc segments close to the first connecting portion and the second connecting portion are larger than line widths of remaining bending line segments and remaining circular arc segments.

10. The application device of claim 8 , wherein a gap between the first connecting portion and a bending line segment adjacent to the first connecting portion, a gap between two adjacent bending line segments, a gap between the second connecting portion and a bending line segment adjacent to the second connecting portion and a diameter of the circular arc segment are greater than or equal to thickness of the elastic members.

11. The application device of claim 8 , wherein an opening is formed at a position between two adjacent bending line segments opposite to the circular arc segment, the opening located in the non-widen area is provided with a damping member, and the damping member connects two adjacent bending line segments.

12. The application device of claim 5 , wherein a central area is positioned between the first end and the second end; the deformation portion is formed by extending from the first end to the central area in a curve in a first direction, then extending from the central area to the second end in a curve in a direction opposite to the first direction.

13. The application device of claim 12 , wherein the deformation portion has a helical structure, and the deformation portion is formed by spirally extending from the first end to the central area in a clockwise direction or a counterclockwise direction, and spirally extending from the central area to the second end in the counterclockwise direction or the clockwise direction.

14. The application device of claim 13 , wherein a spiral line segment is formed by bending the deformation portion once, and two adjacent spiral line segments are arranged with an interval.

15. The application device of claim 14 , wherein line widths of the first connecting portion, the second connecting portion, and the spiral line segments close to the first connecting portion and the second connecting portion are larger than line widths of remaining spiral line segments.

16. The application device of claim 14 , wherein a gap between the first connecting portion and a spiral line segment adjacent to the first connecting portion, a gap between two adjacent spiral line segments and a gap between the second connecting portion and a spiral line segment adjacent to the second connecting portion are greater than or equal to thickness of the elastic members.

17. The application device of claim 16 , wherein each of a gap between a spiral line segment connected to the first connecting portion and a spiral line segment adjacent thereto, and a gap between a spiral line segment connected to the second connecting portion and a spiral line segment adjacent thereto is provided with a damping member to connect two adjacent spiral line segments.

18. The application device of claim 1 , wherein the application device further comprises a vibration unit, and the elastic members are used to balance vibration of the vibration unit in a preset direction.

19. The application device of claim 18 , wherein at least three elastic members are provided, and the at least three elastic members are uniformly spaced apart along a periphery of the vibration unit.

20. The application device of claim 18 , wherein the application device further comprises a bracket, the vibration unit comprises a diaphragm and a voice coil connected to the diaphragm; the first connecting portion is connected to the voice coil, and the second connecting portion is connected to the bracket, or
wherein the vibration unit comprises a diaphragm, a voice coil and a cup, the voice coil and the cup are connected at the same side of the diaphragm, the first connecting portion is connected to the cup, and the second connecting portion is connected to the bracket, and

Assignees

• Goertek Inc

Inventors

• Liu Chunfa
• Yang Jianbin
• Wang Jianxin
• Qiang Shousong

Classifications

• H04R9/06

  Loudspeakers · CPC title

• H04R9/025 Primary

  Magnetic circuit · CPC title

• H04R7/04

  Plane diaphragms · CPC title

• H04R7/26

  Damping by means acting directly on free portion of diaphragm or cone (air damping H04R1/28) · CPC title

• H04R9/043 Primary

  Inner suspension or damper, e.g. spider (outer suspension or surround H04R7/16) · CPC title