WO2016179989A1

WO2016179989A1 - Vibration loudspeaker

Info

Publication number: WO2016179989A1
Application number: PCT/CN2015/094540
Authority: WO
Inventors: 王继宗; 李栋; 许超
Original assignee: 歌尔声学股份有限公司
Priority date: 2015-05-13
Filing date: 2015-11-13
Publication date: 2016-11-17

Abstract

Disclosed is a vibration loudspeaker, comprising a housing, and a vibration system and a magnetic circuit system disposed inside of the housing; the magnetic circuit system is suspended in the housing by means of a support piece, and the support piece comprises a first fixing part and a second fixing part; the first fixing part is fixed to the housing, and the second fixing part is fixed to the magnetic circuit system; the first fixing part is connected to the second fixing part by means of connecting arms; the connecting arms are divided into two groups, and the two groups of connecting arms have different widths. In the vibration loudspeaker of the present invention, the connecting arms are divided into two groups having different widths. The group of wider connecting arms ensures the vibration and rebounding of the support piece, thereby satisfying the vibration function of the vibration loudspeaker and ensuring the vibration loudspeaker to pass the dependability tests, while the group of narrower connecting arms helps with the centering and prevents the vibration loudspeaker from becoming misaligned during vibration. The vibration loudspeaker of the present invention has good performance and high reliability.

Description

Vibration speaker

Technical field

The present invention relates to the field of electroacoustics, and more particularly to a vibrating speaker.

Background technique

The vibration speaker is a multifunctional acoustic device that has the function of a vibration motor in addition to the vibration sounding function of the ordinary speaker. The vibration speaker can save the internal space of the portable electronic terminal, simplify the assembly process of the portable electronic terminal, and reduce the cost of the portable electronic terminal, so the vibration speaker is more and more widely used in the field of portable electronic terminals.

The structure of the prior art vibrating speaker mainly comprises an outer casing, a rear cover that cooperates with the outer casing, and the rear cover and the outer casing form a cavity, and the vibration system and the magnetic circuit system are accommodated in the cavity. With the improvement of performance requirements of portable electronic terminal equipment, how to avoid the deflection when vibrating the vibration function of the speaker, and how to ensure that the vibration speaker product passes the reliability test, and the product yield is the focus of the industry.

Summary of the invention

The technical problem to be solved by the present invention is to provide a vibration speaker which can effectively avoid vibration deflection of a vibration speaker and has a high reliability rate of product reliability test.

In order to achieve the above object, the present invention adopts the following technical solutions:

A vibration speaker includes an outer casing, a vibration system and a magnetic circuit system housed in the outer casing; the magnetic circuit system is suspended in the outer casing by a support piece, and the support piece includes a first fixing portion and a second fixing portion; the first fixing portion is fixed to the outer casing, the second fixing portion is fixed to the magnetic circuit system; the first fixing portion is connected to the second fixing portion through a connecting arm; the connecting arm includes In the two groups, the two sets of connecting arms have different widths.

As a preferred technical solution, the vibration speaker has a rectangular structure, and the The support piece is also a rectangular structure; the first fixing portion and the second fixing portion are connected by a set of first connecting arms disposed on the short-axis side and a set of second connecting arms disposed on the long-axis side; A set of connecting arms includes two identical connecting arms.

As a further preferred, the first connecting arm width is greater than the second connecting arm width. As a still further preferred, the first connecting arm width is greater than 0.3 mm and the second connecting arm width is less than 0.3 mm.

As a further preferred feature, the first connecting arm width is smaller than the second connecting arm width. As a still further preferred, the first connecting arm width is less than 0.3 mm and the second connecting arm width is greater than 0.3 mm.

Preferably, in the above aspect, the connecting arm and the second fixing portion are provided with a reinforcing structure at a fixed position.

As a further preferred, the reinforcing structure is an R-angle structure.

As a preferred technical solution, the support piece is integrally molded and fixed with the outer casing, and the first fixing portion is injection-molded inside the outer casing.

As a further preferred solution, the first fixing portion is a block structure, and the second fixing portion is a ring structure.

In the vibrating speaker of the present invention, the magnetic circuit system is suspended inside the outer casing by the supporting piece, and the supporting piece comprises a first fixing portion fixed to the outer casing and a second fixing portion fixed to the magnetic circuit system, and the first fixing portion and the second fixing portion pass The connecting arm is connected, the connecting arm comprises two groups, and the two sets of connecting arms have different widths. The vibrating speaker of the invention passes through two sets of connecting arms with different widths, and a wider set of connecting arms can ensure the vibration rebound of the supporting piece, which satisfies The vibration performance of the vibrating speaker ensures that the vibrating speaker passes the reliability test. A narrow set of connecting arms can assist the centering and prevent the vibration of the vibrating speaker from being skewed.

Preferably, the vibrating speaker is rectangular, and the two sets of connecting arms comprise a set of first connecting arms disposed on the short axis sides and another set of second connecting arms disposed on the long axis sides, each set of connecting arms comprising two identical Connecting arm. The width of the first connecting arm and the second connecting arm are different, which can ensure the vibration speaker passes the reliability test, and the narrow set of connecting arms can complement the Helps the centering function to prevent deflection during vibration of the vibrating speaker. Wherein the wider connecting arm width is greater than 0.3 mm, and the narrow connecting arm width is less than 0.3 mm, and the narrow connecting arm is narrower as long as the connecting arm is not deformed.

In order to improve the reliability of the support piece and ensure that the product passes the reliability test, the reinforcing arm is provided with a reinforcing structure at a fixed contact position with the second fixed portion. Further, the reinforcing structure is an R-angle structure, and the R-angle structure can prevent the connecting arm from breaking.

In order to improve the firmness of the fixing of the supporting piece and further improve the reliability of the vibrating speaker, the first fixing portion of the supporting piece can be integrally injection-molded with the outer casing. The first fixing portion has a block shape and is integrally molded into the inside of the casing, and the second fixing portion has an annular shape and is fixedly connected to the magnetic circuit system.

In summary, the vibration speaker of the invention can effectively avoid the vibration deflection of the vibration speaker, improve the reliability test pass rate of the product, and has the advantages of good performance and high reliability.

DRAWINGS

1 is a perspective view of a vibrating speaker according to a specific embodiment of the present invention;

Figure 2 is an exploded view of the vibration speaker shown in Figure 1;

Figure 3 is a cross-sectional view of the vibration speaker shown in Figure 1;

Figure 4 is a schematic view showing the structure of the inner piece of Figure 2;

Figure 5 is a schematic view showing the integrated structure of the support piece and the outer casing;

Figure 6 is an enlarged view of a portion I of Figure 5.

detailed description

The content of the present invention will be described in detail below with reference to the accompanying drawings:

As shown in FIG. 1 , FIG. 2 and FIG. 3 , the vibration speaker of the present invention comprises a casing 1 , a rear cover 2 fixedly engaged with one end of the casing 1 , and a front cover 11 fixed to the other end of the casing 1 , and a casing 1 and a rear cover 2 . The front cover 11 cooperates to form a cavity that houses the fixed vibration system and the magnetic circuit system. As shown in FIG. 2 and FIG. 3, the vibration system includes a diaphragm 32, a reinforcing portion 31 fixed to the diaphragm, and a voice coil 33, and the voice coil 33 and the reinforcing portion 31 are fixed to the outer casing 1 through the diaphragm 32; The system includes a fixed combination of the washer 51, the magnet 52 and the basin frame 53. The magnet 52 and the washer 51 are fixed inside the basin frame 53 and form a magnetic gap with the side wall of the basin frame 53, and the voice coil 33 of the vibration system is suspended. Provided in the magnetic gap. As shown in FIG. 2 and FIG. 3, the vibrating speaker of the present invention further includes a supporting piece 41 and a mass 42. As shown in FIG. 3, the mass 42 is an annular structure, and the mass 42 is disposed outside the basin frame 53 and the basin frame 53. The fixing piece; the supporting piece 41 includes a second fixing portion disposed inside and a first fixing portion fixed to the outer casing, the second fixing portion of the supporting piece 41 is fixed to the basin frame 53, and the basin frame 53 is suspended from the outer casing by the supporting piece 41 1 internal. When the vibration speaker of the present invention is operated, a drive current is input into the voice coil 33, and the voice coil 33 is disposed in the magnetic gap. The current change in the voice coil 33 disposed in the magnetic field causes the voice coil to be subjected to Lorentz force, and is suspended from the voice coil. The magnetic circuit system within the outer casing 1 is subjected to a reaction force. When the low frequency signal is input in the voice coil 33, the reaction force received by the magnetic circuit system resonates with the mass, the vibration of the vibrating speaker is obvious, and the vibrating speaker can perform the vibration function; when the higher frequency signal is input in the voice coil 33 The voice coil 33 vibrates obviously, and the diaphragm 32 vibrates and sounds, and the vibrating speaker plays the role of sounding. The vibration speaker of the invention adds a vibration function to the speaker, and saves the internal space and assembly process of the portable electronic terminal.

The vibration speaker of the present invention, as shown in FIG. 4, the support piece 41 includes a first fixing portion 411 and a second fixing portion 412, and a set of first connecting arms 41a and another are disposed between the first fixing portion 411 and the second fixing portion 412. A set of second connecting arms 41b, the supporting piece 41 of the present embodiment has a rectangular shape, the first connecting arm 41a is a connecting arm on the short axis, and the second connecting arm 41b is a connecting arm on the long axis. A set of first connecting arms 41a includes two short-axis connecting arms, and a set of second connecting arms 41b includes two long-axis connecting arms. As shown in FIG. 5, the width of the first connecting arm 41a is W1, and the width of the second connecting arm 41b is W2. In the vibration speaker of the embodiment, W1 is greater than W2, that is, the width of the first connecting arm 41a is greater than the second connection. The width of the arm 41b. The vibrating speaker of the invention has a narrow second connecting arm to prevent deflection of the magnetic circuit system when vibrating, and a wider first connecting arm ensures vibration rebound during vibration, and the support piece of the structure can effectively improve the vibrating speaker product The reliability test passes the rate while avoiding the skew during vibration and improving the vibration performance. Therefore, the vibrating speaker of the present invention has excellent performance and high reliability. point.

As a refinement scheme, a wider set of connecting arm widths is greater than 0.3 mm, and a narrower set of connecting arm widths is less than 0.3 mm. The narrower connecting arms are narrower as long as the connecting arms are not deformed.

As shown in FIG. 6, the support structure of the embodiment has a reinforcing structure at a position where the connecting arm is in fixed contact with the second fixing portion 412. In this embodiment, the reinforcing structure is an R-angle structure, and the R-angle design can be effective. The position of the connecting arm extending beyond the second fixing portion is prevented from being broken, which is beneficial to the reliability test of the product and the reliability of the vibrating speaker.

As shown in FIG. 4 and FIG. 5, the first fixing portion 411 has a block structure, the second fixing portion 412 has an annular structure, and the supporting piece 41 is integrally injection-molded with the outer casing 1 and the first fixing portion. The injection molding of 411 is disposed inside the outer casing 1 to improve the firmness of fixing the support piece 41 and the outer casing 1, thereby preventing the product yield from being lowered due to the falling off of the support piece 41, and improving the reliability of the product.

The vibrating speaker of the invention adopts two sets of connecting arms with different widths, and a wider set of connecting arms can ensure the vibration rebound of the supporting piece, satisfy the vibration performance of the vibrating speaker, and ensure the vibrating speaker passes the reliability test, and the narrow one The set of connecting arms can act as an auxiliary centering to prevent deflection during vibration of the vibrating speaker. The vibration speaker of the invention has the advantages of good performance and high reliability.

The above is only the embodiment of the present invention, and is not intended to limit the present invention, and equivalent modifications or variations made by those skilled in the art in light of the present invention are included in the scope of the claims.

Claims

A vibration speaker includes an outer casing, a vibration system and a magnetic circuit system housed in the outer casing; the magnetic circuit system is suspended in the outer casing by a supporting piece, wherein the supporting piece comprises a first fixing And a second fixing portion; the first fixing portion is fixed to the outer casing, the second fixing portion is fixed to the magnetic circuit system; the first fixing portion is connected to the second fixing portion through a connecting arm; The arms include two groups, the two sets of connecting arms having different widths.
The vibrating speaker according to claim 1, wherein the vibrating speaker has a rectangular structure, and the supporting piece is also a rectangular structure; the first fixing portion and the second fixing portion are arranged in a short group by a group. The first connecting arm of the shaft edge is coupled to a plurality of second connecting arms disposed on the long axis side; the set of connecting arms includes two identical connecting arms.
The vibration speaker according to claim 2, wherein said first connecting arm width is greater than said second connecting arm width.
The vibration speaker according to claim 3, wherein said first connecting arm has a width greater than 0.3 mm and said second connecting arm has a width less than 0.3 mm.
The vibration speaker according to claim 2, wherein said first connecting arm width is smaller than said second connecting arm width.
The vibration speaker according to claim 5, wherein said first connecting arm has a width of less than 0.3 mm and said second connecting arm has a width of more than 0.3 mm.
The vibration speaker according to any one of claims 1 to 6, wherein the connecting arm and the second fixing portion are provided with a reinforcing structure at a fixed position.
The vibration speaker according to claim 7, wherein said reinforcing structure is an R-angle structure.
The vibration speaker according to any one of claims 1 to 6 and claim 8, wherein the support piece is integrally molded and fixed to the outer casing, and the first fixing portion is injection-molded inside the outer casing. .
The vibration speaker according to claim 9, wherein the first fixing portion is a block structure, and the second fixing portion is a ring structure.