WO2018171053A1

WO2018171053A1 - Vibration system in sound unit and sound unit

Info

Publication number: WO2018171053A1
Application number: PCT/CN2017/088253
Authority: WO
Inventors: 杨卓; 牟宗君; 籍成宗; 刘杰; 杨健斌
Original assignee: 歌尔股份有限公司
Priority date: 2017-03-20
Filing date: 2017-06-14
Publication date: 2018-09-27
Also published as: CN106888421A

Abstract

A vibration system in a sound unit and a sound device, comprising a lead extension line (3) electrically connected to a voice coil lead. The lead extension line (3) extends from a position thereof that is electrically connected to the voice coil lead along the side wall direction of a voice coil (1), and the lead extension line (3) is provided with a bending portion (30) that bends towards the vibration direction of the voice coil (1). The deformation of the bending portion (30) may be dispersed throughout the entire lead extension line (3), and the stress and the deformation of the lead extension line (3) during the vibration process may be effectively dispersed and reduced, so as to avoid a problem with the reliability of the lead extension line (3) due to the breakage thereof. The compliance and the stiffness of the vibration system may be compensated by means of the voice coil (1) due to the elasticity (elastic recovery) of the bending portion (30) of the lead extension line (3), so that the acoustic performance of a loudspeaker is improved. In addition, the bending portion (30) of the lead extension line (3) is arranged along the in-line trajectory of the voice coil (1) in the vibration direction, so that the in-line trajectory range of the voice coil (1) in the horizontal direction may be reduced, space in the horizontal direction is saved, and development of light and thin sound units is facilitated.

Description

Vibration system and sounding unit in a sounding unit

Technical field

The present invention relates to the field of acoustics, and more particularly to a vibration system in a sounding device; the invention also relates to a sounding device.

Background technique

With the widespread use of high-quality smartphones, portable electronic products such as Pads, as an essential accessory for these electronic products, people are increasingly demanding speakers, receivers, and earphones. Whether it is a speaker, a receiver or a headphone, it includes a housing and a sounding unit (horn) disposed in the housing.

As the sounding unit such as the micro-speaker has higher and lower requirements for low-frequency characteristics, the better low-frequency characteristics allow the performance of the micro-speaker to be extended to a lower frequency range, but when the speaker operates at a lower frequency, the vibration system will be large. The vibration displacement is designed to match the large displacement, and the voice coil lead is generally designed as a long straight track with a large bending arc. However, this straight line method is easy to resonate at the arc, which makes the acoustic distortion performance worse, and the stress and pulling force at the position are concentrated. Under long time and high intensity work, the risk of disconnection is easy to occur.

Summary of the invention

It is an object of the present invention to provide a new technical solution for a vibration system in a sounding unit.

According to a first aspect of the present invention, there is provided a vibration system in a sounding unit comprising a diaphragm and a voice coil connected to the lower end of the diaphragm and having a voice coil lead, and further comprising a lead extension electrically connected to the voice coil lead a wire extending from a position where it is electrically connected to the voice coil lead along a side wall direction of the voice coil, the free end of the lead extension wire being soldered to the fixed pad; wherein the lead extension wire has A curved portion that is curved toward the vibration direction of the voice coil.

Optionally, the curved portion is provided with one or more; the curved portion is curved upward or downward.

Optionally, a lead routing portion having a pad is also adhered to the end surface of the voice coil, and the voice coil lead and the lead extension wire are soldered to the pad of the lead transition portion.

Optionally, the pad is provided with one, and the voice coil lead and the lead extension wire are soldered on the same pad.

Optionally, the pads are provided with two, and the voice coil leads and lead extension wires are soldered on different pads.

Optionally, the lead routing portion is an FPCB board.

Optionally, the lead extension wire and the voice coil lead are made of the same material, and the two are integrated.

Optionally, the lead extension wire and the voice coil lead are made of different materials.

Optionally, the lead extension wire is made of copper wire or copper clad aluminum wire, or a silver wire made of silver copper.

According to another aspect of the present invention, there is also provided a sounding device comprising: a housing, a magnetic circuit system, and the vibration system described above.

In the vibration system of the present invention, on the one hand, when the lead extension wire vibrates up and down with the voice coil, the deformation of the bent portion can be dispersed over the entire lead extension line, and the lead extension cable can be effectively dispersed and reduced during the vibration process. The stress and deformation prevent the lead extension cable from being broken and the reliability problem arises. On the other hand, the elasticity (elastic recovery) of the bent portion of the lead extension wire itself can replenish the compliantness and rigidity of the vibration system through the voice coil, improving the acoustic performance of the speaker. In addition, the curved portion of the lead extension line is a trajectory in the direction of the voice coil vibration, which can reduce the range of the trajectory of the voice coil in the horizontal direction, save the space in the horizontal direction, and is beneficial to the development of the thinning and thinning of the sounding unit.

The inventors of the present invention have found that in the prior art, the straight line of the lead wire makes it easy to resonate at a circular arc, so that the acoustic distortion performance is deteriorated, and the stress and the pulling force at the position are concentrated, and the strength is high for a long time. Under work, there is a risk of disconnection. Therefore, the technical task to be achieved by the present invention or the technical problem to be solved is not thought of or expected by those skilled in the art, so the present invention is a new technical solution.

Other features and advantages of the present invention will become apparent from the Detailed Description of the <RTIgt;

DRAWINGS

The accompanying drawings, which are incorporated in FIG

1 is a schematic view showing the structure of a vibration system of the present invention.

Figure 2 is a left side view of the vibration system of the present invention.

Figure 3 is an exploded view of Figure 1.

detailed description

Various exemplary embodiments of the present invention will now be described in detail with reference to the drawings. It should be noted that the relative arrangement of the components and steps, numerical expressions and numerical values set forth in the embodiments are not intended to limit the scope of the invention unless otherwise specified.

The following description of the at least one exemplary embodiment is merely illustrative and is in no way

Techniques, methods and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but the techniques, methods and apparatus should be considered as part of the specification, where appropriate.

In all of the examples shown and discussed herein, any specific values are to be construed as illustrative only and not as a limitation. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that similar reference numerals and letters indicate similar items in the following figures, and therefore, once an item is defined in one figure, it is not required to be further discussed in the subsequent figures.

Referring to Figures 1, 2 and 3, the present invention provides a vibration system in a sounding device comprising a diaphragm (not shown), a voice coil 1 having two voice coil leads. The upper end of the voice coil 1 is connected to the lower end surface of the diaphragm, and can be bonded to the lower end surface of the diaphragm, for example, by glue. This connection and connection structure are well known to those skilled in the art.

The voice coil 1 can be wound by layers of enameled wires, and the whole can be square or rectangular. The two voice coil leads of the voice coil 1 are respectively located at opposite ends of the voice coil 1. For example, when the voice coil 1 selects a rectangular structure, the two voice coil leads may be respectively located on the two short sides or the long side of the voice coil 1 (the position of the voice coil lead from the voice coil 1). The structure of this voice coil belongs to the field. The common knowledge of the skilled person is not specifically described here.

The vibration system of the present invention further includes a lead extension cord 3 electrically connected to the voice coil lead, and the lead extension cord 3 can be made of the same material as the voice coil lead, and the two are integrated. That is, the voice coil lead is wound around the voice coil 1 and is circulated from the voice coil 1 to form the lead extension cord 3.

In another preferred embodiment of the present invention, the lead extension cord 3 is made of a material different from the voice coil lead. The lead extension cord 3 may be a copper wire or a copper-clad aluminum wire, or a silver-silver wire.

The lead extension cord 3 of the present invention is electrically connected to the voice coil lead. In a specific embodiment of the invention, the lead extension cord 3 is directly connected to the voice coil lead of the voice coil 1 such that the lead extension cord 3 Electrically connected to the voice coil lead and mechanically connected. The lead extension cord 3 extends from a position where it is electrically connected to the voice coil lead, extending along the side wall of the voice coil 1, for example, depending on design requirements, the lead extension cord 3 is connected from its position to the voice coil lead The long side wall or the short side wall of the voice coil 1 extends and goes outward.

After the lead extension cord 3 is slid out from the side wall of the voice coil 1, the free end thereof is soldered to the fixing pad 4, and the fixing pad 4 can be connected to the housing. The connection structure of the fixing pad belongs to the present invention. Common knowledge of those skilled in the art is therefore not shown in the drawings. Among them, the lead extension cord 3 has a curved portion 30 that is curved toward the vibration direction of the voice coil 1. Referring to Figure 1, the position between the ends of the voice coil 1 has a downwardly curved bend 30. It should be noted that the curved portion 30 may be bent upward or may be bent downward as long as it is curved in the vibration direction of the voice coil 1. The curved portion 30 may be provided one or a plurality of the curved portions 30.

In another specific embodiment of the present invention, the lead extension cord 3 and the voice coil lead are electrically connected together by the lead transition portion 2. Specifically, referring to FIG. 1 to FIG. 3, the lead transfer The portion 2 has a pad 20, and the lead transition portion 2 is fixed to the upper end surface or the lower end surface of the voice coil 1 by adhesive bonding. The lead wire switching portion 2 is preferably an FPCB board having an insulating number, high strength, and light weight, and the lower end of the lead wire connecting portion 2 can be bonded to the upper end surface of the voice coil 1 and the upper end thereof can be bonded to the diaphragm, thereby realizing the sound. Ring 1, FPCB board and diaphragm connection.

The voice coil lead is drawn from the voice coil 1 and directly soldered to the pad 20 of the lead transition portion 2, and the lead extension cord 3 is also soldered to the pad 20 of the lead transition portion 2, thereby realizing the lead The electrical connection and mechanical connection of the extension cord 3 and the voice coil lead. The lead extension line 3 extends from the position of the pad 20, along the side wall direction of the voice coil 1, and is soldered to the fixed pad 4. The bent portion 30 is provided on the lead extension line 3 at a position between the pad 20 and the fixed pad 4.

Since the lead extension cord 3 can be soldered on the lead transition portion 2, the lead extension cord 3 has a more stable connection point, and the lead extension cord 3 can be prevented by bonding to the voice coil with respect to the conventional lead. The shedding during the vibration process improves the bonding force of the lead extension cord 3.

The pad 20 on the lead transition portion 2 of the present invention may be provided with one, and the voice coil lead and the lead extension 3 are soldered to the same pad 20. The pad 20 may also be provided with two, as shown in FIG. 1, the two pads 20 may be disposed at both ends of the lead transition portion 2, at this time, the voice coil lead and the lead extension cord 3 may be soldered at Different pads 20 are on and can be turned on by internal circuitry.

When the lead extension cord 3 of the present invention and the voice coil lead are integrally formed, it is still possible to adopt a structure in which soldering is performed by the lead transition portion 2, as long as the lead is soldered to the pad 20 of the lead transition portion 2 at a position where the lead is taken out. Just go up.

The vibration system of the present invention can be applied to a sounding device such as a speaker, a receiver, etc., and the present invention also provides a sounding device including a housing and a magnetic circuit system, the above-described vibration system. The cooperation of the vibration system and the magnetic circuit system is common knowledge of those skilled in the art and will not be specifically described herein.

While the invention has been described in detail with reference to the preferred embodiments of the present invention, it is understood that It will be appreciated by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

A vibration system in a sounding unit, comprising: a diaphragm and a voice coil (1) connected to a lower end of the diaphragm and having a voice coil lead, and a lead extension cable electrically connected to the voice coil lead (3) The lead extension line (3) extends from a position where it is electrically connected to the voice coil lead along a side wall direction of the voice coil (1), and the free end of the lead extension line (3) is soldered to the fixed pad ( 4) Upper; wherein the lead extension line (3) has a curved portion (30) curved toward the vibration direction of the voice coil (1).
The vibration system according to claim 1, characterized in that the curved portion (30) is provided with one or more; the curved portion (30) is curved upward or downward.
The vibration system according to claim 1, characterized in that a lead-conducting portion (2) having a pad (20) is bonded to an end surface of the voice coil (1), the voice coil lead and the lead wire The extension wires (3) are soldered to the pads (20) of the lead transition portion (2).
The vibration system according to claim 3, wherein said pad (20) is provided with one, and said voice coil lead and lead extension (3) are soldered to said same pad (20).
The vibration system according to claim 3, characterized in that said pads (20) are provided with two, and said voice coil leads and lead extension wires (3) are soldered to different pads (20).
The vibration system according to claim 3, characterized in that the lead transition portion (2) is an FPCB board.
The vibration system according to any one of claims 1 to 6, characterized in that the lead extension cord (3) and the voice coil lead are made of the same material, and the two are integrated.
The vibration system according to any one of claims 1 to 6, characterized in that the lead extension cord (3) and the voice coil lead are made of different materials.
The vibration system according to claim 8, characterized in that the lead extension wire (3) is made of a copper wire or a copper clad aluminum wire, or a silver wire of a silver-copper material.
A sounding device comprising a housing, a magnetic circuit system, and a vibration system according to any one of claims 1 to 9.