KR20080055568A - Multi-functional microspeaker - Google Patents

Abstract

A multi-functional vibrating microspeaker is provided to offer a variety of application services, such as tactile vibrations, a bone-conduction function, and an attached speaker when a vibration coil unit is attached downward at an upper housing. A multi-functional microspeaker includes housing, an elastic supporting unit(11), a magnet supporting unit(12), a center magnet(14) and an outer ring magnet(15), and a vibration coil unit(16). The elastic supporting unit is disposed beneath the magnet supporting unit and includes at least one elastic bridge. The elastic bridge is concentrically assembled with the magnet supporting unit to prevent eccentricity of the elastic supporting unit. The magnet supporting unit is concentrically assembled with the elastic supporting member. The magnet supporter has an enough size to be spaced apart from a lateral housing. The central magnet and the outer ring magnet are attached to the magnet supporting unit. The outer ring surrounds the central magnet with a space therebetween. The vibration coil unit is inserted into a space formed between the center magnet and the outer ring magnet.

Description

Multi-Functional Microspeaker

1 is an exploded perspective view of a vibrating microspeaker according to the present invention.

2 is a cross-sectional view of a vibrating microspeaker according to the present invention.

<Description of the major reference numerals>

10 housing 10a side housing

10b: lower housing 10c: upper housing

11 elastic support 12 magnet support

13: center coupling member 14: center magnet

15: outer ring magnet 16: vibration coil part

The present invention relates to a composite vibrating speaker, and more particularly, to a microscopic composite vibrating microspeaker having a structure in which the bone conduction function, various vibration functions, and the attachment speaker function, and at the same time, have a miniaturized size except for the acoustic function. will be.

Recently, a speaker using a magnet, without using an existing sound reproducing unit (dia frame), has appeared a vibration speaker to apply the generated vibration, mainly through the vibration of the human bones without transmitting the sound to the air It is used as a bone conduction speaker or a haptic sound speaker that makes vibration feel tactile (skin).

The vibrating speaker that provides functions such as bone conduction and haptic sound must be capable of inducing vibration in conjunction with an electrical acoustic signal and be able to transmit the fine vibration to the outside as it is, and the improvement of the structure that enables this is the core of the technology. can do.

However, the conventional vibrating speaker has many factors that suppress or hinder the vibration of the magnet due to the support member or the part exposed to the external pressure, and thus failed to transmit the fine vibration. It is not happening.

In addition, vibration motors applied to small multimedia mobile communication devices such as mobile phones are focused only on delivering strong vibrations to the outside, so there is no room for various vibrations.

If the speaker using magnet is reconfigured to maintain the maximum vibration force and efficiency in conjunction with the electric sound signal even if the acoustic part is removed, the function of the bone conduction speaker, the attachment speaker and the vibration motor having various vibration modes as a single vibration speaker structure It is possible to implement an integrated composite vibration speaker that provides all of them can provide tremendous economic effect and functionality.

However, adding various functions as described above to one vibrating speaker structure increases the overall size, which causes problems that cannot be applied to small multimedia communication devices such as mobile phones, and when the size is reduced, parts such as magnets and coils can be mass-produced. Since problems such as degradation of vibration performance due to degradation, small magnets, coils, etc. occur, it is urgent to improve the structure so that various functions as described above can be implemented as microminiatures.

In this regard, the present inventors have various vibration modes other than the general vibration motor of the simple vibration mode as well as the bone conduction speaker function that can be used as a speaker for the call in the ultra-small size that can be adopted in a recent slim mobile phone. Both the vibration motor function and the attached speaker function that amplifies the sound from the attached material are implemented, and when applied to the recent mobile communication multimedia terminal that has been slimmed down such as a mobile phone, it is not only enormous cost / space saving effect but also a very small and very useful value for the user. Unique researches have been conducted on improving the structure of a vibrating speaker.

The biggest problem here is the creation of a structure that can minimize the overall size while ensuring sufficient vibration force and acoustic signal response, but all of these requirements must be pursued together with cost reduction or ease of manufacturing in relation to mass production. Creating the optimal structure to meet is a challenge.

The present invention solves performance degradation problems such as vibration force and acoustic signal response due to the internal structure when miniaturizing the complex vibration microspeaker described above, and has a small size structure, such as a slim mobile phone. An object of the present invention is to provide a technical idea of realizing a compact composite vibration speaker of bone conduction / attachment speaker / vibration that can be applied to a terminal.

The present invention to cover the side surface to achieve the technical problem; An elastic support having a center coupling at the bottom of the magnet support and including at least one elastic bridge fixed to prevent eccentricity of the housing; A magnet support having a diameter less than a diameter of the side housing so as to be centrally coupled to the elastic support using a center coupling member on the elastic support and spaced apart from the side housing; A magnet attached to the magnet support, and an outer ring magnet surrounding the center magnet and spaced apart from the center magnet; It provides an ultra-compact composite vibration microspeaker comprising a vibration coil portion placed in the space formed between the center magnet and the outer ring magnet.

The housing may optionally further include one or more of an upper housing covering the upper portion and a lower housing covering the lower portion.

Hereinafter, with reference to the drawings will be described in detail the technical idea of the present invention.

1 is an exploded perspective view of each component of the vibration type microspeaker according to the present invention.

The housing is basically a side cover structure, which is an essential component that fixes internal components and protects the product from external shocks, and serves as a central magnet, outer ring magnet, magnet support, It distributes the vibration of the integrated portion of the center coupling member and the protection member evenly throughout the housing, and serves to transmit all vibrations including the micro vibration to the outside.

The housing 10 is a part capable of realizing various shapes such as a square pillar and a cylinder according to the design needs of the application target, the shape of the housing also affects the shape of the internal components, depending on the shape of the housing Internal components are also implemented in similar shapes with different scales.

Fig. 1 shows, as the most preferred embodiment, a housing consisting of a cylindrical tubular side housing, a disc shaped upper housing and a lower housing, and the internal components also have a circular basic shape. Therefore, the embodiment shown in FIG. 1 is only one example, and it is intended to be clear that the shapes of the housing and the internal components are not limited thereto.

 The illustrated housing can be divided into a cylindrical tubular side housing, a disc shaped upper and lower housing, and they may be integral, but in consideration of the manufacturing process, the cylindrical tubular side housing, a disc shaped upper housing and a lower housing are separated and In the state in which the side housing and the upper housing (or the lower housing) are combined, the internal components will be stacked and finally the upper housing (or the lower housing) will be structured.

In this case, when the entire thickness of the speaker needs to be further reduced, one or more of the upper housing and the lower housing may be selectively omitted.

Hereinafter, although inevitably referring to a shape suitable for the cylindrical housing in describing the internal components in the case of adopting the cylindrical and covering the whole surface, this is only for the description of the embodiments and the rights of the present invention. I want to make it clear that the scope is not limited to the image.

The elastic support 11 includes at least one elastic bridge, which is an elastic body such as a leaf spring that can limit the vibration width inside the housing while still transmitting vibration to the outside by using the elasticity of the metal, one side of both ends of the magnet support The center is engaged in the lower portion and the other side is fixed so that the eccentricity does not occur in the side housing or the lower housing.

In this case, the elastic bridge may be directly attached to the center coupling and the housing, but may be indirectly attached using a separate support member.

1 is a case of being indirectly attached to the side housing using a ring-shaped outer edge as a support member, provided with four elastic bridges formed from the outer edge to the center and one side of each elastic bridge at the center for center coupling. Gathered and the other side is fixed to the support member to form an outer edge to illustrate the indirect coupling by the ring-shaped support member is fixed to the side housing.

It is most important that the elastic support has elasticity that does not interfere with vibration, so that the eccentricity does not occur. The number and shape of the elastic bridges are the size of the elastic support 11, the oscillating weight (center magnet, outer ring magnet, magnet support part). , The center coupling member and the integrated portion of the protective member) can be adjusted according to the weight and vibration force, and various implementations are possible as long as the above technical concept is met.

As shown in the embodiment, when fixing by using a separate support member in the side housing when the center of the plate spring formed from the outer edge to the center when two or more (preferably 2 to 4) elastic body By combining in the center it is possible to form a combination of straight, trigeminal, cruciform and the like.

In addition, the elastic body may be implemented in various shapes for providing elasticity, such as a wave shape, a torsion spring shape, a whirlwind shape, and formed to provide the required elasticity in any shape including the elastic body in any shape. One of the ends of each of the at least one elastic bridge is centrally coupled and the other side is fixed to the side housing or the lower housing so that eccentricity does not occur, it is sufficient that the structure that can faithfully perform the generation and transmission of vibration.

The magnet support part 12 mounted on the elastic support part 11 prevents the loss of the magnet magnetic force and fixes the magnet to the elastic support part. When the center coupling member 13 is a rivet or a pin, the elastic support part 11 is provided. And it is preferable that the magnet support 12 adopts separate members 11b and 12a that can form a through hole at the center thereof.

Therefore, the center coupling member 13 is firmly centered so that the elastic support 11 and the magnet support 12 are not separated or separated as coupling members such as rivets, pins or adhesives.

In this case, the center coupling means a coupling in a position where the center is held so that eccentricity does not occur.

The magnet support 12 is formed to have a size that can be spaced apart from the side housing (10a), the magnet is attached to the upper bar, the magnet to be attached on the magnet support 12 is a cylindrical single body in the center A center magnet 14 is positioned and a ring-shaped outer ring magnet 15 surrounds the center magnet 14 so that a space can be formed between the center magnet 14 and the outer ring magnet 15.

The upper part of the center magnet 14 and the outer ring magnet 15 which are not covered by the magnet support 12 are covered with plate-shaped protective members 14a and 15a made of pure iron or the like in an unintended direction. To prevent magnetic loss.

In the space formed between the center magnet 14 and the outer ring magnet 15 is a vibration coil 16 is placed to cause the vibration of the magnet, the vibration coil 16 is the lower portion of the upper housing 17 It is attached downward to, it is possible to be located between the center magnet 14 and the outer ring magnet 15 by directly coupling to the upper housing (10c), or by coupling a separate support member to the side housing as shown in the figure.

This is a very strong magnetic field is formed when the magnet and the magnet in close proximity, using the principle of generating a strong vibration force by placing a vibration coil in between.

2 is a cross-sectional view of a vibrating micro-speaker combined with the above components, in which the vibration coil portion 16 is positioned vertically between the center magnet 14 and the outer ring magnet 15, and has a large amplitude while minimizing the loss of vibration. It can be seen that the magnet is fixed apart from the housing by using the elastic support 11 designed to evenly transmit vibration. In addition, the protection member (14a, 15a) to prevent the loss of magnetic force to maximize the magnetic force to participate in the vibration.

As a result of their own experiments, the vibration speaker according to the present invention provided a powerful vibration force capable of performing the function of the vibration motor despite the ultra-compact (e.g. diameter 10 mm) simple structure and realized excellent bone conduction performance.

Although the technical idea of the present invention has been described through the embodiment employing the cylindrical housing, the present invention does not exist in the shape of each component or the coupling method itself, but rather in an arrangement structure between the components. It will be appreciated that alternatives or modifications apparent to those skilled in the art in the non-feature of the present invention shall fall within the scope of the present invention.

In addition, the above description focused only on the arrangement of the final components in consideration of the importance of the structure of the present invention, and did not mention a specific manufacturing process or method. If the same as will belong to the scope of the present invention.

According to the present invention, when the vibration coil part is attached downward to the upper housing, it is possible to provide an ultra-thin composite vibration microspeaker by saving a space by introducing a single layer magnet, so that various applications using bodily vibration, bone conduction function, and attachment speaker are possible. Can provide services.

In addition, despite its high functionality, it provides a very simple structure that not only contributes to the simplification of the manufacturing process and reduces the incidence of defective products, but also replaces the existing speaker (receiver) and vibration motor with the bone conduction speaker and vibration motor function of the present invention. It is expected to make an excellent contribution to cost reduction of small mobile communication multimedia devices such as mobile phones.

According to the present invention, not only a protection member for removing the acoustic part and covering the coil support and the lower part of the magnet is unnecessary, but also the ultra-thin composite vibration microspeaker can be saved as much as possible when the vibration coil part is directly attached to the uppermost part of the housing. It is possible to provide a bar, bodily vibration, bone conduction function, and can provide a variety of application services using the attached speaker.

In addition, it provides a very simple structure in spite of its high functionality, which not only contributes to the simplification of the manufacturing process and reduces the incidence of defective products, but also replaces the existing call speaker (receiver) and vibration motor with the bone conduction speaker and vibration motor function of the present invention. It is expected to make an excellent contribution to cost reduction of small mobile communication multimedia devices such as mobile phones.

New features such as bone conduction services, various vibration modes, haptic sounds, and attached speakers provide convenience and fun to consumers, which is expected to give a good response in the market.

In particular, bone conduction has the advantage of mechanical design because the sound is transmitted through vibration, eliminating the limitation of mechanical design that the existing call speaker (receiver) should be mounted only on one part of the device corresponding to the ear.

Therefore, the micro-compact vibration microspeaker according to the present invention is a market-competitive technology that satisfies all the size, function, design and economy, and is considered to have considerable value in the relevant market.

Claims (5)

A housing covering the side face; An elastic support having a center coupling at the bottom of the magnet support and including at least one elastic bridge fixed to prevent eccentricity of the housing; A magnet support having a size that can be centrally coupled to the elastic support and spaced apart from the side housing on the elastic support; A magnet attached to the magnet support, and an outer ring magnet surrounding the center magnet and spaced apart from the center magnet; Vibration-type microspeaker comprising a vibration coil portion entered in the space formed between the center magnet and the outer ring magnet. The vibrating microspeaker according to claim 1, wherein the housing selectively includes one or more of an upper housing covering an upper portion and a lower housing covering the lower portion. The vibration type micro-speaker according to claim 1 or 2, wherein the upper portion of the center magnet and the outer ring magnet are covered with a protective member to prevent the loss of magnetic force. The vibration type micro speaker of claim 2, wherein the vibration coil part is attached to a lower portion of the upper housing. The vibrating micro speaker of claim 1, wherein the housing may be integrally formed with an elastic support and a coil support.

Images