KR20080055570A - Multi-functional microspeaker - Google Patents

Abstract

A multi-functional vibrating microspeaker is provided to remove the restriction that a conventional speaker is mounted on only one part corresponding to a portion around an ear since a sound is transferred through vibration. A multi-functional vibrating microspeaker includes housing, an elastic supporting unit(11), a magnet supporting unit(12), a magnet(14), and a vibrating coil unit(15). The magnet supporting unit is concentrically joined to the elastic supporting unit by using a central joining member(13) in a lower portion of the elastic supporting unit. The magnet is attached to a lower portion of the magnet supporting unit and has a size enough to be spaced from a lateral housing(10a). The vibrating coil unit is spaced to correspond to a lower portion of the magnet.

Description

Multi-Functional Microspeaker

       1 is an exemplary cross-sectional view of a conventional vibrating microspeaker.

       Figure 2 is an exemplary cross-sectional view of a conventional vibration motor.

Figure 3 is an exploded perspective view of a vibrating microspeaker according to the present invention.

Figure 4 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: magnet

15: vibrating 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, a vibration speaker that applies the vibration generated without using the existing sound reproducing unit (dia-frame) has appeared, mainly bone bones that transmit the sound through the vibration of the human bone without transmitting the sound to the air It is only used as a speaker function or a haptic sound speaker function that makes the vibrations feel tactile (skin).

1 is an example of a conventional bone conduction speaker, which does not function as a vibration motor and implements only a bone conduction function, and a part connected to a vibration part coil or a magnet that vibrates is placed outside the main body to make contact with an ear part of a human body. The way it is. Such a bone conduction speaker has a problem in sound quality that the sound pressure drops sharply when vibration is not made freely when the external body is pressurized, and for the same reason, it provides an unstable vibration force and the vibration coil is not a magnet between the magnets. Located between and the yoke, a weak magnetic field is formed, the vibration force is also reduced.

Figure 2 is an example of a conventional vibration motor, it is designed to swing the central axis up and down while rotating the central axis by DC current, it is not easy to adjust the intensity of the vibration is possible only simple vibration, attached to the bone conduction function The attached speaker function, in which the material is acoustically loud, and the haptic sound function in which the vibration of the sound source is tactilely sensed are not supported.

Conventional vibration speaker that is not rotary type has a plate coil installed at the lowermost part of the housing to transmit the vibration force to the magnet, but it is bilaterally connected to the magnet and the double spring is too short and flexible so that vibration cannot be properly transmitted to the housing. The bone conduction function is not realized, and the outer diameter of the center magnet, yoke, spring, frame, etc. is widened, which is not suitable for small multimedia mobile communication devices such as mobile phones. there is a problem.

Vibration speakers using magnets generally generate vibrations using vibration coils and magnets. Such vibration generating structures may have various structures, but they are not applicable to microminiature speakers and require the creation of completely different structures. .

Recently, the existing speakers used in slim multimedia mobile communication devices such as mobile phones merely play sound sources such as music and game sounds as ringtones, but also realize various vibrations including bodily vibrations and vibration motor functions that feel the vibrations of the skin with the skin. Vibration content, bone conduction function that can recognize sound without passing through the general ear (earm / middle ear), and attached speaker function that vibrates the attached material to make the speaker are not provided in the existing general acoustic microspeakers. A vibration motor is also just a vibration.

If the speaker using magnet is reconfigured the remaining center structure to have the maximum vibration force and efficiency even if the acoustic part is removed, it is a single vibration speaker structure that provides all the functions of bone conduction speaker, attachment speaker and vibration motor with various vibration modes. It is possible to implement a vibrating speaker.

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 applicant has 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 communication in the ultra-small size that can be adopted in a recent slim mobile phone. The vibration motor function, the attached speaker function that amplifies the sound from the attached material, and the haptic sound function are all implemented, and when applied to the recent mobile communication multimedia terminal, which is slimming like a mobile phone, it is very useful for users as well as a huge cost / space saving effect. We have conducted unique research on improving the structure of high value miniature composite vibration 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 the problem of performance degradation such as vibration force and acoustic signal response due to the internal structure generated in the case of miniaturizing the complex vibration microspeaker described above, and the problem of reduction in mass productivity such as machining of parts. It is an object of the present invention to provide a technical idea of implementing a microconductive speaker of bone conduction / attachment speaker / vibration that can be applied to a small mobile communication multimedia terminal such as a slim mobile phone.

The present invention to cover the side surface, including a side housing to achieve the technical problem; An elastic support having a center coupling at an upper portion of the magnet support and including at least one elastic bridge fixed to prevent eccentricity of the housing; A magnet supporter for center coupling with the elastic supporter by using a center coupling member under the elastic supporter; A magnet attached to the bottom of the magnet support and formed to be spaced apart from the side housing; Vibration coil portion spaced apart to correspond to the lower magnet; It provides a vibrating microspeaker comprising a.

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.

3 is an exploded perspective view of a vibration type microspeaker according to the present invention.

The housing is a part that can be implemented in various shapes such as a rectangular column 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. The internal components are also scaled according to the shape of the housing. It will be implemented in a similar shape with different.

Fig. 3 shows, as the most preferred embodiment, a cylindrical tubular side housing, a housing consisting of a disk-shaped upper and lower housing, and the internal components also have a circular base shape.

Therefore, the embodiment shown in FIG. 3 is only one example, and is not intended to mean that the shape of the housing and internal components is 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. Again, I would like to emphasize 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.

In addition, the elastic support may be manufactured from the same material as the housing, and may be integrally formed.

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 disc-shaped magnet support 12 mounted below the elastic support 11 prevents magnetic loss of the magnet and fixes the magnet to the elastic support. When the center coupling member 13 is a rivet or a pin, the elastic support is provided. (11) and the magnet support 12 will preferably employ separate members (11b, 12a) that can form a through-hole in the center.

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 preferably formed in the same size as the magnet 14 so as to prevent the loss of magnetic force to the upper part of the magnet as much as possible, the lower portion of the magnet is attached by attaching the combined but the size of the magnet side It is formed to be spaced apart from the housing.

By adjusting the size as described above, the magnet 14 may be spaced apart from the side housing 10a, and the magnet 14 formed as a single body may not be divided, thereby providing a strong magnetic force because the total surface area is large.

At this time, the vibration coil part 15 is installed below the magnet 14 in the horizontal direction, which is implemented by fixing the vibration coil part 15 upward on the lower housing 10b. It is possible by directly attaching the vibration coil part to the upper part or by fixing a separate supporting member to the side housing and attaching the vibration coil part to the upper part thereof.

However, the direct attachment on the lower housing is advantageous in simplifying the manufacturing process and realizing ultra-thinning.

Such a configuration of the present invention can provide a single-piece magnet that is not divided to implement a powerful vibration force.

4 is a cross-sectional view of a vibrating micro-speaker in which the above components are combined, and the vibration coil 15 is directly attached to the lower housing 10b without gaps, thereby contributing to the minimization of thickness and horizontally with respect to the magnet 14. It can be seen that the space is fixed to give the vibration space of the magnet.

Therefore, the structure of the micro-compound vibration microspeaker according to the present invention has the advantage that the protection member to cover the bottom of the magnet other than the magnet support is unnecessary, and maximizes the vibration force by maximizing the cross section affected by the coil, Most of the materials are largely composed of one piece, and the materials are very easy to process. In addition, a wide disk-shaped vibrating part coil having a maximum vibration area can be directly attached to the lower housing without a space to realize a minimum thickness.

As a result of their experiments, the vibrating speaker according to the present invention provided a powerful vibration force capable of performing the function of the vibration motor despite the simple structure.

In view of the importance of the structure of the present invention, the above description focuses on the arrangement of the final components, and does not mention a specific manufacturing process or method. In the same case, it will belong to the scope of the present invention.

According to the present invention, not only the protection member for removing the acoustic part and covering the coil support and the lower part of the magnet is unnecessary, but also attached to the lower housing directly without attaching the lower part of the housing to the lower housing without the space spaced apart from the lower housing. It is possible to provide ultra-thin composite vibration microspeakers by maximizing the required space, and can provide various application services using bodily vibration, bone conduction function and attachment speakers.

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.

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, since bone conduction transmits sound through vibration, it eliminates the limitation of mechanical design in which the existing call speaker (receiver) should be mounted only on one part of the device corresponding to the ear, and has the advantage of mechanical design.

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, including a side housing; An elastic support having a center coupling at an upper portion of the magnet support and including at least one elastic bridge fixed to prevent eccentricity of the housing; A magnet supporter for center coupling with the elastic supporter by using a center coupling member under the elastic supporter; A magnet attached to the bottom of the magnet support and formed to be spaced apart from the side housing; Vibration coil portion spaced apart to correspond to the lower portion of the magnet; Vibration type microspeakers comprising a. 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 of claim 1 or 2, wherein the magnet support portion is formed to cover the entire upper portion of the magnet. The vibrating micro speaker of claim 2, wherein the vibrating coil part is directly attached to the lower housing. The vibration type micro speaker of claim 1, wherein the housing is integrally formed with an elastic support part.

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