WO2011003333A1

WO2011003333A1 - Speaker

Info

Publication number: WO2011003333A1
Application number: PCT/CN2010/074488
Authority: WO
Inventors: 陈奚平
Original assignee: Chen Xiping
Priority date: 2009-07-07
Filing date: 2010-06-25
Publication date: 2011-01-13
Also published as: CN101945317A

Abstract

The present invention provides a speaker comprising a housing assembly, a vibrating diaphragm assembly and an upper cover. The housing assembly comprises a housing upper-edge step, a magnetic yoke, a magnet, a magnetic conductive board and an elastic structure for connecting the housing upper-edge step with the magnetic yoke for integration. The magnetic yoke has a groove structure. The magnet is positioned in the groove, and the magnetic conductive board is positioned above the magnet. The vibrating diaphragm assembly comprises an elastic sheet, a vibrating diaphragm and a coil. The vibrating diaphragm connects to the annular structure of the elastic sheet, and the coil is positioned at the joint of the vibrating diaphragm curved surfaces and arranged in the magnetic yoke. The upper cover is positioned above the vibrating diaphragm assembly, and both of them are fixedly mounted inside the housing upper-edge step. The construction of the elastic structure in the present invention enables the speaker to have bone-conduction characteristics, which not only protects the hearing of the users, but also produces perfect sound effects. Furthermore, the beneficial effects of simple fabrication process, high compatibility and easy replacement are also achieved.

Description

A speaker technology field

The present invention relates to a speaker, and more particularly to a small or miniature speaker having a bone conduction effect. Background technique

A small (or miniature) speaker is mounted inside the existing earphone (or earphone). The vibrating diaphragm built in the speaker is audible by vibrating air under the action of the coil. In order to obtain better acoustic effects, the vibrating diaphragm used in the existing earphone (or earphone) usually has two curved surfaces with different radii of curvature. The outer curved surface with a larger radius of curvature is used for sounding in the low and middle frequency bands, and the inner curved surface with smaller radius of curvature is used for sounding in the high frequency band. In addition, in the design of the earphone (or earphone), it is common to use the method of closing the ear canal as much as possible to achieve resonance of the air in the ear cavity to obtain a better hearing effect. However, the negative consequences of the existing earphones (or earphones) are damage to the user's hearing, especially the damage caused by the earphones (or earphones) at high volume. In order to protect the user's hearing, the invention uses the bone conduction speaker instead of the ordinary speaker to protect the user's hearing. In the Chinese invention patent 200820140405. 5 "earphone earphone with bone conduction speaker", a direct connection is provided. An earbud type earphone with a bone conduction speaker on a portable device. Although the invention can protect the user's hearing and reduce the power of the bone conduction speaker so that it can be directly connected to various portable devices, the tone color is not perfect due to the characteristics of the bone conduction speaker. Especially in the low and high frequency bands Obvious. Moreover, since the mechanical inertia of the vibrating piece in the invention is still large, the performance of the sensitivity is also not perfect. In addition, when designing the earphone machine by this method, the designer's requirements are higher, because the internal structure must be adjusted accordingly when the appearance style changes.

We know that conventional earphones (or earphones) also have a certain bone conduction effect when working at high volume, and the use of bone conduction speakers usually causes the surrounding air to vibrate. The difference is: conventional earplugs (or earphones) are mainly vibrating air, while bone conduction speakers are mainly mechanical vibrations that generate solids. When working at high volume, users will feel uncomfortable, especially when regular speakers work at high volume for a long time. It will cause damage to the user's hearing.

Summary of the invention

The purpose of the present invention is to provide a speaker with low power consumption, wide frequency band, high sensitivity, and which does not damage the user's hearing even when working at a high volume, which can realize the input. The power is diverted and the user's ear canal is decompressed, so as to preserve the characteristics of the traditional speaker sound and eliminate the defects that easily damage the user's hearing, thereby achieving the purpose of protecting the user's hearing.

A speaker comprises a housing assembly, a diaphragm assembly and an upper cover. The upper cover is disposed above the diaphragm assembly, and is fixedly mounted on the housing along the step. The housing assembly includes a step along the step, a yoke, The magnet and the magnetic conductive plate, the yoke is a groove structure, the magnet is fixed inside the groove, and the magnetic conductive plate is fixed above the magnet, and the diaphragm assembly body comprises a spring piece, a vibration diaphragm and a coil, and the ring structure of the vibration diaphragm and the elastic piece Connected, the coil is fixed at the intersection of the two curved surfaces of the vibrating membrane and placed in the yoke groove. The outer casing assembly further comprises an elastic structure for connecting the outer casing along the step and the yoke.

A speaker having a resilient structure that allows the yoke to vibrate along a step along its central axis relative to the housing.

A speaker, the elastic structure and the process of integrally forming the step along the step and the yoke production.

A speaker, the elastic structure and the outer casing are formed by a step forming process along the step and the yoke.

A speaker has a symmetrical strip-shaped hole along the step on the outer casing.

A speaker, the edge of the shrapnel having a symmetrical structure protruding structure (9-a).

A speaker, the annular structure of the elastic piece has an outer diameter slightly smaller than an inner diameter of the step along the outer casing. A speaker, wherein the diaphragm is fixed on an inner side of a strip-shaped hole symmetrically on a step along a step. In the present invention, the outer casing structure of the conventional speaker is improved, and an elastic structure is added, so that the speaker can maintain the good sound quality effect of the conventional speaker while working, and at the same time has the characteristics of bone conduction, and realizes two. The perfect combination between the people. In addition, a ventilating structure is arranged in the step of the speaker casing to enable air convection on the inner and outer sides of the speaker diaphragm to reduce the impact of the diaphragm on the user's eardrum during operation. This achieves the purpose of protecting the user's hearing.

DRAWINGS

1 is a cross-sectional view showing a speaker mounting structure in Embodiment 1 of the present invention;

Figure 2 is a plan view showing a speaker housing assembly in Embodiment 1 of the present invention;

3 is a schematic structural view of a speaker shrapnel in Embodiment 1 of the present invention;

4 is a cross-sectional view showing a speaker mounting structure in Embodiment 1 of the present invention;

Figure 5 is a schematic view showing the structure along the step of the outer casing in the first embodiment of the present invention;

6 is a cross-sectional view showing a speaker mounting structure in Embodiment 3 of the present invention;

Figure 7 is a graph showing the relationship between sound pressure and current in an embodiment of the present invention.

Among them, 1 case along the step, 2 elastic structure, 3 upper cover, 4 coil, 5 yoke, 6 magnet, 7 magnetic plate, 8 vibrating diaphragm, 9 shrapnel, 9-a protruding structure, 9-b ring Structure, 10 strip hole structure. DETAILED DESCRIPTION OF THE INVENTION All of the features disclosed in this specification, or steps in all methods or processes disclosed, can be combined in any manner other than mutually exclusive features and/or steps. Any feature disclosed in the specification, including any additional claims, abstracts and drawings, may be replaced by other equivalents or alternative features, unless otherwise stated. That is, unless specifically stated otherwise, each feature is only one example of a series of equivalent or similar features. The invention will now be further described with reference to the accompanying drawings and embodiments. Example 1

As shown in FIG. 1 , it is a sectional view of a mounting structure of a speaker, which comprises an outer casing assembly, a diaphragm assembly body and an upper cover 3 , and the upper cover 3 is located above the diaphragm assembly body and is fixedly mounted on the upper portion of the outer casing assembly. 1 step along the stairs. The outer casing assembly includes a step 1, a yoke 5, a magnet 6 and a magnetic conductive plate 7 on the outer casing. The magnet 6 is fixedly mounted from the inside to the outside in the yoke 5, and the magnetic conductive plate 7 is mounted. The diaphragm assembly includes the elastic piece 9, and the vibration The diaphragm 8 and the coil 4 are fixed at the intersection of the two curved surfaces of the vibrating membrane 8, placed in the gap between the yoke 5 and the magnet 6 and the magnetic conductive plate 7, and the annular structure of the vibrating membrane 8 and the elastic sheet 9. (9-b) fixed connection, the outer casing assembly further comprises an elastic structure 2, and the elastic structure 2 is connected to the outer casing along the step 1 and the yoke 5. As shown in FIG. 1 and FIG. 3, in the present embodiment, the elastic structure 1 on the outer casing assembly is formed by an integral molding process, and three linear structures are symmetrically distributed and bent at both ends by 90°. The connecting shell is along the step 1 and the yoke 5, the edge of the elastic piece 9 has a symmetrical protruding structure 9-a, the edge is an annular structure 9-b, and the protruding structure 9-a is connected with the annular structure 9-b as a whole. After installation as shown in Figure 1, the two ends of the coil 4 can be connected to an audio device such as an MP3. After the power is turned on, the relationship between the sound pressure and the current is shown in Figure 7, where the current is Sound pressure is no longer proportional. Example 1 In the present embodiment, the elastic piece 9 is omitted, and the structure along the step 1 on the outer casing as shown in Fig. 4 is used. At this time, the outer edge portion of the diaphragm 8 is fixed to the inner side of the strip-shaped hole which is symmetric along the step 1 on the outer casing.

The structure of the rest of the embodiment is the same as that of the embodiment 1.

Example 3

In the present embodiment, the elastic piece 9 is omitted, and the elastic structure 2 and the outer casing assembly structure are constructed as shown in Fig. 6, and the elastic structure 2 is located at a lower portion of the groove in the yoke 5, and is fixedly coupled to the groove.

The structure of the rest of this embodiment is the same as that of Embodiment 1.

In the three embodiments described, the measured sound pressure versus current curve is shown in FIG. The invention is not limited to the specific embodiments described above. The invention extends to any new feature or any new combination disclosed in this specification, as well as any novel method or process steps or any new combination disclosed.

Claims

1. A speaker comprising a housing assembly, a diaphragm assembly and an upper cover (3), wherein an upper cover (3) is disposed above the diaphragm assembly, and is fixedly mounted on the housing along the step (1), the housing combination The body comprises a step (1), a yoke (5), a magnet (6) and a magnetic conductive plate (7) on the outer casing, the yoke (5) is a groove structure, and a magnet (6) is arranged in the yoke (5), A magnetic conductive plate (7) is disposed above the magnet (6), and the diaphragm assembly body comprises a resilient piece (9), a vibrating diaphragm (8) and a coil (4), and a ring structure of the vibrating diaphragm (8) and the elastic piece (9) (9-b) is connected, the coil (4) is fixed at the intersection of the two curved surfaces of the vibrating membrane (8), and placed in the yoke (5), wherein the outer casing assembly further comprises a top edge of the outer casing The step (1) and the yoke (5) are connected to form an integral elastic structure (1). A speaker according to claim 1, characterized in that the yoke (5) is vibrated along the central axis thereof along the step (1) with respect to the outer casing.

3. A loudspeaker according to claim 1, characterized in that the elastic structure (2) is formed on the outer casing by an integral forming process along the step (1) and the yoke (5).

A speaker according to claim 1, characterized in that the elastic structure (2) and the outer casing are formed by a split forming process along the step (1) and the yoke (5).

5. A loudspeaker according to claim 1, wherein a symmetric strip-shaped aperture is provided in the outer casing along the step (1).

6. A loudspeaker according to claim 1 or 5, characterized in that the diaphragm (8) is fixed to the inner side of the housing along the symmetrical strip-like opening in the step (1).

A speaker according to claim 1, characterized in that the edge of the elastic piece (9) has a protruding structure (9_a) of a symmetrical structure.

A speaker according to claim 1, characterized in that the annular structure (9-b) of the elastic piece (9) has a smaller diameter than the inner diameter of the step (1) on the outer casing.