KR102075940B1 - Bone conduction unit - Google Patents

Abstract

A bone conduction unit for improving an output of a low vocal range comprises: a magnetic unit forming a magnetic field; a vibration generation unit provided on a first surface of the magnetic unit and forming vibration by using the magnetic field; and a sound generation unit provided on a second surface facing the first surface of the magnetic unit and generating sound by using the magnetic field.

Description

Bone conduction unit {BONE CONDUCTION UNIT}

The present disclosure relates to bone conduction units.

With the remarkable advances in digital audio equipment, millions of people can listen to the music they want anytime, anywhere. Most of the output method of the digital sound device is an earphone or headphone through the air conduction method.

However, in the case of air conduction earphones and headphones, the ear is blocked and used, so that the surrounding sound is cut off, and the problem of safety accidents is steadily emerging. As a result, some developed countries have legal restrictions on the use of air-conducting earphones and headphones that cover their ears and prevent them from listening to music on the road.

Therefore, research is being conducted on an audio output device capable of preventing a safety accident by simultaneously receiving a sound through an acoustic device while sufficiently listening to ambient noise. Representative examples of such sound output devices include bone conduction headphones or bone conduction earphones.

In addition, the conventional sound output method transmits the sound by transmitting the vibration of the air through the eardrum to the cochlea, while bone conduction transmits the vibration directly from the bone to the cochlea. Because of this, even if the eardrum and disorders are normal, the cochlea and the auditory nerve can be heard through the bone conduction headphones or bone conduction earphones.

However, bone conduction headphones or bone conduction earphones have a disadvantage in that low frequency output is weak due to attenuation of vibrations in the process of transmitting sound as compared to a general sound output method.

Therefore, there is a demand for sound output means having both the advantages of the general sound output method and the sound output method using bone conduction at the same time.

Republic of Korea Patent Publication 10-2018-0090229

The present disclosure is devised in response to the above-described background, and it is an object of the present invention to provide a bone conduction unit having an improved low-frequency output.

The technical problems of the present disclosure are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

The present disclosure is devised in response to the above-described background, and is intended to provide a bone conduction unit. The bone conduction unit may include a magnetic part forming a magnetic field; A vibration generating unit provided on the first surface of the magnetic part to form vibration using the magnetic field; And a sound generator provided on a second surface opposite to the first surface of the magnetic part and generating sound using the magnetic field. It may include.

In addition, the vibration generating unit; A first plate coupled to at least a portion of the first surface and concentrating the magnetic field; A first coil provided to surround an outer circumferential surface of the first plate to receive an electrical signal provided from the outside; A first diaphragm coupled to an upper side of the first coil and receiving vibration generated by the first coil; A central axis having one end coupled to one region of the first diaphragm; A second diaphragm coupled to the other end of the central axis and transmitting vibration to the outside; And a first elastic part provided between the second diaphragm and the first diaphragm and having a first through hole through which the central axis penetrates and amplifies the vibration. It may include.

In addition, the sound generating unit; A second plate coupled to at least a portion of the second face and concentrating the magnetic field; A second coil provided to surround an outer circumferential surface of the second plate to receive an electrical signal provided from the outside; And a third diaphragm provided to be spaced apart from the second plate to be vibrated up and down. It may include.

In addition, the magnetic part, the first plate, the second plate, the first coil, the second coil, the first diaphragm and the hollow to accommodate at least a portion of the central shaft therein, the first end at one end A first case having an elastic portion coupled thereto and the third diaphragm coupled to the other end thereof; It may further include.

In addition, a second case having an upper space is opened and the lower portion is closed, and having an inner space to receive the first case, the first elastic portion, the second diaphragm, the third diaphragm and the central axis; The vibration generating unit may further include the vibration generating unit so that the second diaphragm faces the upper portion of the second case, and the sound generating unit may be disposed so that the third diaphragm faces the lower portion of the second case. .

The vibration generating unit may further include a second elastic part installed in the second case so as to have a second through hole through which the central axis penetrates and is provided between the first elastic part and the second diaphragm. .

In addition, a first rotational speed of the first coil wound around the first plate and a second rotational speed of the second coil wound around the second plate may be different.

In addition, the first rotational speed of the first coil wound on the first plate may be less than the second rotational speed of the second coil wound on the second plate.

In addition, the first diameter of the first coil and the second diameter of the second coil may be different.

In addition, the first diameter of the first coil may be smaller than the second diameter of the second coil.

In addition, at least one first perforation coupled to the second case such that one surface is in contact with an area of the body to the user and covers the open upper portion, and maintains the air pressure inside the second case to be equal to the outside air pressure. Silicon member having a; It may further include.

In addition, the second case may include at least one second perforation for outputting the sound generated by the sound generating unit to the outside of the second case.

The magnetic part may be inserted into the magnetic part so that at least a portion of the first coil may be inserted into the first surface and have a second diameter smaller than the first diameter of the magnetic part as an outer diameter than the second diameter. A first coil insertion groove having a small third diameter as an inner diameter; And an inner diameter of a fifth diameter smaller than the fourth diameter with a fourth diameter drawn into the magnetic part and having a fourth diameter smaller than the first diameter so that at least a portion of the second coil can be inserted into the second surface. A second coil insertion groove having; It may include.

The magnetic unit may further include: a first magnet having a first diameter; A second magnet having a third through hole having a second diameter larger than the first diameter; A connection part having a first thickness of the first magnet and a third thickness thinner than the second thickness of the second magnet and connecting the first magnet and the second magnet; A third coil insertion groove formed on the first surface by a difference in thickness of the first magnet, the second magnet, and the connection part; And a fourth coil insertion groove formed on the second surface by a difference in thickness of the first magnet, the second magnet, and the connection portion. It may further include.

In addition, the connection portion may have magnetic properties.

In addition, magnetic forces of the first magnet, the second magnet, and the connection part may be different.

The first magnetic force of the first magnet may correspond to the second magnetic force of the second magnet, and the third magnetic force of the connection part may correspond to the second magnetic force.

Technical solutions obtained in the present disclosure are not limited to the above-mentioned solutions, and other solutions not mentioned above may be apparent to those skilled in the art from the following description. It can be understood.

According to some embodiments of the present disclosure, it is possible to provide an improved bone conduction unit with low band output.

Effects obtained in the present disclosure are not limited to the above-mentioned effects, and other effects not mentioned above may be clearly understood by those skilled in the art from the following description. .

Various aspects are now described with reference to the drawings, wherein like reference numerals are used to refer to like components throughout. In the following examples, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more aspects. However, it will be apparent that such aspect (s) may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more aspects.
1 is a cross-sectional view illustrating a composite sound output speaker according to some exemplary embodiments of the present disclosure.
2 is a cross-sectional view illustrating a bone conduction unit having a magnetic part according to some embodiments of the present disclosure.
3 is a cross-sectional view for describing a bone conduction unit having a second elastic portion according to some embodiments of the present disclosure.
4 is an exploded view illustrating a vibration generator and a sound generator coupled to a first case according to some embodiments of the present disclosure.
5 is a diagram for describing a magnetic part, according to some exemplary embodiments.
FIG. 6 is a cross-sectional view taken along line AA ′ of FIG. 5.
7 is a flowchart illustrating an example of a method in which vibrations or sounds generated in a bone conduction unit are delivered to a user according to some embodiments of the present disclosure.

Various embodiments and / or aspects are now disclosed with reference to the drawings. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more aspects. However, it will also be appreciated by one of ordinary skill in the art that this aspect (s) may be practiced without these specific details. The following description and the annexed drawings set forth in detail certain illustrative aspects of the one or more aspects. However, these aspects are exemplary and some of the various methods in the principles of the various aspects may be used and the descriptions described are intended to include all such aspects and their equivalents. Specifically, as used herein, “an embodiment”, “an example”, “aspect”, “an example” and the like are not to be construed that any aspect or design described is better or advantageous than other aspects or designs. It may not.

Regardless of the reference numerals, the same or similar components are given the same reference numerals and redundant description thereof will be omitted. In addition, in the description of the embodiments disclosed herein, if it is determined that the detailed description of the related known technology may obscure the gist of the embodiments disclosed herein, the detailed description thereof will be omitted. In addition, the accompanying drawings are intended to facilitate understanding of the embodiments disclosed herein, and the technical spirit disclosed herein is not limited by the accompanying drawings.

Although the first, second, etc. are used to describe various elements or components, these elements or components are of course not limited by these terms. These terms are only used to distinguish one element or component from another element or component. Therefore, the first device or component mentioned below may be a second device or component within the technical idea of the present invention.

Unless otherwise defined, all terms used in the present specification (including technical and scientific terms) may be used in a sense that can be commonly understood by those skilled in the art. In addition, terms that are defined in a commonly used dictionary are not ideally or excessively interpreted unless they are specifically defined clearly.

In addition, the term “or” is intended to mean an inclusive “or” rather than an exclusive “or”. That is, unless specified otherwise or unambiguously in context, "X uses A or B" is intended to mean one of the natural implicit substitutions. That is, X uses A; X uses B; Or where X uses both A and B, "X uses A or B" may apply in either of these cases. In addition, the term "and / or" as used herein is to be understood to refer to and include all possible combinations of one or more of the listed related items.

In addition, the terms "comprises" and / or "comprising" mean that such features and / or components are present, but exclude the presence or addition of one or more other features, components, and / or groups thereof. It should be understood that it does not. Also, unless otherwise specified or in the context of indicating a singular form, the singular in the specification and claims should generally be construed as meaning "one or more."

When a component is said to be "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may exist in the middle. Should be. On the other hand, when a component is referred to as being "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

The suffixes "module" and "unit" for components used in the following description are given or mixed in consideration of ease of specification, and do not have meanings or roles that are distinct from each other in themselves.

When an element or layer is referred to as "on" or "on" of another element or layer, another layer or element in between, as well as on top of another element or layer, Includes all intervening cases. On the other hand, when a component is referred to as "directly on" or "directly on" indicates that there is no intervening component or layer in between.

The spatially relative terms " below ", " beneath ", " lower ", " above ", " upper " It can be used to easily describe a correlation with a component or other components. Spatially relative terms should be understood to include terms that differ in orientation of the device in use or operation in addition to the directions shown in the figures.

For example, when flipping a component shown in the drawing, a component described as "below" or "beneath" of another component may be placed "above" the other component. Can be. Thus, the exemplary term "below" can encompass both an orientation of above and below. The components can be oriented in other directions as well, so that spatially relative terms can be interpreted according to the orientation.

The objectives and effects of the present disclosure and the technical configurations for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. In describing the present disclosure, when it is determined that a detailed description of a known function or configuration may unnecessarily obscure the subject matter of the present disclosure, the detailed description will be omitted. Terms to be described later are terms defined in consideration of functions in the present disclosure, and may be changed according to intentions or customs of users or operators.

However, the present disclosure is not limited to the embodiments disclosed below, but may be implemented in various forms. The present embodiments are merely provided to make the present disclosure complete and to fully convey the scope of the disclosure to those skilled in the art, and the present disclosure is defined only by the scope of the claims. . Therefore, the definition should be made based on the contents throughout the specification.

In the present disclosure, the bone conduction unit 10 may provide sound through air conduction as well as provide sound through bone conduction.

In detail, the speaker for listening to music needs to have a balanced sound in the low, mid and high ranges. However, the bone conduction speaker should be in close contact with the user's temporal bone and transmit vibration. At this time, the attenuation of the vibration may occur due to the characteristics of the bone conduction speaker that is in close contact with the human skin, and thus the sound characteristics of the low range may be somewhat insufficient. However, the bone conduction unit 10 of the present disclosure simultaneously includes a vibration generating unit 100 for transmitting sound through bone conduction and at least one case and a sound generating unit 200 for outputting sound through air. Thus, it is possible to supplement the disadvantages of the above-described bone conduction speaker. Hereinafter, the bone conduction unit 10 in the present disclosure will be described in detail with reference to FIGS. 1 to 7.

1 is a cross-sectional view illustrating a composite sound output speaker according to some exemplary embodiments of the present disclosure.

Referring to FIG. 1, the bone conduction unit 10 includes a vibration generating unit 100, a sound generating unit 200, a first case 300, a second case 400, a silicon member 500, and a magnetic part ( 600). However, the above-described components are not essential to implementing the bone conduction unit 10, so that the bone conduction unit 10 may have more or fewer components than those listed above.

The magnetic part 600 may be provided inside the bone conduction unit 10 to form a magnetic field.

In detail, the magnetic part 600 may be made of a material having magnetic force.

For example, the magnetic part 600 may include a neodymium magnet, a ferrite magnet, a samariun cobalt magnet, an AINICo magnet, and a rubber magnet. However, the present invention is not limited thereto.

According to some embodiments of the present disclosure, the bone conduction unit 10 may provide a magnetic field necessary for the operation of the vibration generating unit 100 and the sound generating unit 200 using one magnetic unit 600.

In detail, the bone conduction unit 10 may include the magnetic part 600 inside the at least one case. In addition, the bone conduction unit 10 may include a vibration generator 100 on the first surface of the magnetic part 600, and a sound generator 200 on the second surface. Accordingly, the vibration generator 100 and the sound generator 200 may be provided with a magnetic field required to drive the vibration generator 100 and the sound generator 200 through one magnetic unit 600. However, the present invention is not limited thereto.

The vibration generating unit 100 may be provided on the first surface of the magnetic unit 600 to form a vibration for transmitting sound through bone conduction using a magnetic field provided by the magnetic unit 600. Here, the first surface may mean an upper surface of the magnetic part 600.

The vibration generating unit 100 includes a first plate 110, a first coil 120, a first diaphragm 130, a central axis 140, a second diaphragm 150, and a first elastic part 160. can do. However, the above-described components are not essential in implementing the vibration generator 100, and thus, the vibration generator 100 may have more or fewer components than those listed above.

The first plate 110 may be coupled to at least a portion of the first surface of the magnetic part 600 and concentrate the magnetic field.

In detail, the first plate 110 may be fixedly coupled to the first surface of the magnetic part. For example, the first plate 110 may be fixed to the magnetic part 600 by applying an adhesive or the like to at least a portion of the surface that is coupled to the magnetic part 600. However, the present invention is not limited thereto.

The first plate 110 may have a disc shape having conductivity. Here, the conductivity may refer to a property through which a current easily flows. However, the present invention is not limited thereto.

The first coil 120 may be provided to surround the outer circumferential surface of the first plate 110 to receive an electrical signal provided from the outside.

Specifically, the first coil 120 may be a conductive material capable of receiving an electrical signal received from the outside.

For example, the first coil 120 may be made of copper, aluminum, silver, or a gold alloy. However, the present invention is not limited thereto.

Meanwhile, when the first coil 120 receives an electrical signal (for example, an AC signal), the first coil 120 may move up and down by interacting with the magnetic part 600 according to the direction, intensity, and frequency of the received electrical signal. Can be. This is due to Fleming's left-hand law, and the theory related to the principle is well-known and detailed description thereof will be omitted.

On the other hand, the first diaphragm 130 is coupled to the upper side of the first coil 120, the first diaphragm 130 can move up and down by the movement of the first coil 120. That is, the first diaphragm 130 may vibrate up and down.

One end of the central shaft 140 may be coupled to one region of the first diaphragm 130, and the other end thereof may be coupled to the second diaphragm 150. Therefore, the vertical movement received by the first diaphragm 130 from the first coil 120 may be transmitted to the second diaphragm 150 through the central axis 140.

On the other hand, the second diaphragm 150 may transmit vibration to the outside.

Specifically, the second diaphragm 150 may receive the up and down motion generated in the first diaphragm 130 through the central axis 140, and transmit the received up and down motion to the outside. That is, vibration may occur as the second diaphragm 150 moves up and down. Thus, vibration may be provided to the skull of the user. However, the present invention is not limited thereto.

In the present disclosure, the first diaphragm 130, the central axis 140, and the second diaphragm 150 may be integrally formed. Specifically, the first diaphragm 130, the central shaft 140 and the second diaphragm 150 may be made of one plastic material through an injection process using an injection machine, a cutting process using a milling machine, and the like. However, the first diaphragm 130, the central shaft 140, and the second diaphragm 150 may be made of respective components. Materials of the first diaphragm 130, the central axis 140, and the second diaphragm 150 are also not limited to plastics.

The first elastic part 160 may be provided between the second diaphragm 150 and the first diaphragm 130 and may include a first through hole through which the central axis 140 passes.

On the other hand, the first elastic portion 160 may amplify the vibration generated in the bone conduction unit 10.

Specifically, the first elastic portion 160 is provided between the first diaphragm 130 and the second diaphragm 150 to be a disk-shaped thin plastic material to amplify the vibration generated in the first diaphragm 130 Can be.

For example, the first elastic part 160 may be made of a material such as polyetherimide (PEI), polyphenylen sulfide (PPS), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), or the like. However, the present invention is not limited thereto.

In the present disclosure, the first elastic part 160 has at least one opening having a preset pattern to efficiently amplify the vibration of the air generated by the vibration or vibration generated in the first diaphragm 130 (FIG. 4). , 161 may be provided. Here, the predetermined pattern may have a shape similar to a wing of a propeller or a fan. However, the present invention is not limited thereto. The first elastic part 160 is provided with at least one opening 161 having a predetermined pattern, thereby vibrating the frictional force with the fluid generated according to the flow of the fluid inside the bone conduction unit 10 and the like. You can amplify it even more. Here, the specific shape of the at least one opening 161 having the preset pattern will be described later with reference to FIG. 4.

Meanwhile, the sound generator 200 may be provided on the second surface of the magnetic part 600 and generate sound by using a magnetic field provided by the magnetic part 600. Here, the second surface may mean the lower surface of the magnetic part 600.

The sound generator 200 may include a second plate 210, a second coil 220, and a third diaphragm 230. However, the above-described components are not essential in implementing the sound generator 200, and the sound generator 200 may have more or fewer components than those listed above.

The second plate 210 may be coupled to at least a portion of the second surface of the magnetic part 600 and concentrate the magnetic field.

In detail, the second plate 210 may be fixedly coupled to the second surface of the magnetic part 600. For example, the second plate 210 may be fixedly coupled to the magnetic part 600 by applying an adhesive or the like to at least a portion of the surface coupled to the magnetic part 600. However, the present invention is not limited thereto.

The second plate 210 may be formed in a disc shape having conductivity. Here, the conductivity may refer to a property through which a current easily flows. However, the present invention is not limited thereto.

The second coil 220 may be provided to surround the outer circumferential surface of the second plate 210 to receive an electrical signal provided from the outside.

In detail, the second coil 220 may be a conductive material capable of receiving an electrical signal received from the outside.

For example, the second coil 220 may be made of copper, aluminum, silver, or a gold alloy. However, the present invention is not limited thereto.

Meanwhile, when the second coil 220 receives an electrical signal (for example, an AC signal), the second coil 220 according to the direction, intensity, and frequency of the received electrical signal, the magnetic part 600. Interact with and move up and down.

According to some embodiments of the present disclosure, the first coil 120 provided in the vibration generating unit 100 is wound around the first plate 110 and the second coil provided in the sound generating unit 200. The second rotation speed of which 220 is wound on the second plate 210 may be different.

For example, the first rotational speed of the first coil 120 wound on the first plate 110 may be less than the second rotational speed of the second coil 220 wound on the second plate 210. However, the present invention is not limited thereto, and the first rotational speed may be more than or equal to the second rotational speed.

According to some other embodiments of the present disclosure, the first diameter of the first coil 120 and the second diameter of the second coil 220 may be different.

Here, the diameter of the coil may be the diameter of the steel wire of each coil, not the average diameter of the coil generated by the at least one plate.

For example, the first diameter of the first coil 120 may be smaller than the second diameter of the second coil 220. However, the present invention is not limited thereto, and the first diameter may be larger than or equal to the second diameter.

In detail, the first diameter of the first coil may be 0.06 mm, and the second diameter of the second coil 220 may be 0.07 to 0.08 mm. However, the present invention is not limited thereto.

According to some embodiments of the present disclosure, materials of the first coil 120 and the second coil 220 may be different.

For example, when the first coil 120 is formed of silver, the second coil 220 may be formed of copper. However, the material of the first coil 120 and the second coil 220 may not be limited thereto.

Meanwhile, as described above, the bone conduction unit 10 includes the first coil 120 and the second coil 220 in which at least one of the rotation speed, the thickness, and the material is different, thereby generating sound with the vibration generating unit 100. The sound generated by the unit 200 may be configured differently according to the purpose.

In detail, the vibration generator 100 generates vibration because at least one of the rotation speed, the thickness, and the material of the second coil 220 is different from at least one of the rotation speed, the thickness, and the material of the first coil 120. The unit 100 and the sound generator 200 may be specialized to output sound in different sound bands. For example, the vibration generating unit 100 may be specialized in the output of the sound in the middle, high frequency range, the sound generating unit 200 may be specialized in the output of the sound in the low range. However, the present invention is not limited thereto.

The third diaphragm 230 may be installed to be spaced apart from the second plate 210 to be vibrated up and down.

Specifically, the third diaphragm 230 is coupled to the first case 300 to be spaced apart from the second plate 210, coupled to the lower side of the second coil 220, the electrical signal is applied to move up and down The movement of the two coils 220 may be received. Therefore, the third diaphragm 230 may vibrate up and down by receiving the movement of the second coil 220.

Meanwhile, in the present disclosure, the third diaphragm 230 has at least one slot having a preset pattern to efficiently amplify the vibration of the air generated by the vibration or the vibration generated in the second coil 220. It may be provided. The third diaphragm 230 may include at least one slot having a predetermined pattern, thereby further amplifying the vibration through frictional force with the fluid generated according to the flow of the fluid inside the bone conduction unit 10. have. Hereinafter, a detailed shape of the third diaphragm 230 will be described later with reference to FIG. 4.

On the other hand, through the above-described configuration, the sound generating unit 200 may generate a vibration by using a magnetic field provided by the magnetic unit 600, and may generate a sound transmitted through the medium using the generated vibration.

The first case 300 may include an internal space in which at least a portion of the vibration generator 100 and the sound generator 200 are disposed.

In detail, the first case 300 includes a magnetic part 600, a first plate 110, a second plate 210, a first coil 120, a second coil 220, and a first diaphragm ( 130) and a cylindrical shape having a hollow to receive at least a portion of the central axis 140. However, the present invention is not limited thereto.

In addition, one end of the first case 300 may be coupled to the first elastic portion 160 and the other end of the third diaphragm 230.

Specifically, the first case 300 may include at least one first protrusion 310 for coupling with at least one groove (FIGS. 4 and 162) provided in the first elastic part 160. When the at least one first protrusion 310 is inserted into the at least one groove 162, the first case 300 and the first elastic part 160 may be coupled to each other. However, the present invention is not limited thereto.

Meanwhile, the third diaphragm 230 may be coupled to the other end of one end of which the first elastic portion 160 is coupled to the first case 300.

Specifically, the third diaphragm 230 may be coupled to the first case 300 through an adhesive or the like. However, the present invention is not limited thereto, and the other end of the first case 300 includes protrusions similar to at least one first protrusion provided at one end thereof, and the third diaphragm 230 includes at least one protrusion corresponding to at least one protrusion. A groove may be provided, and the first case 300 and the third diaphragm 230 may be coupled to the first case 300 and the third diaphragm 230 by inserting the protrusion into the at least one groove. .

The second case 400 may form an appearance of the bone conduction unit 10.

Meanwhile, the second case 400 may be formed in a shape having an internal space in order to include the first case 300 and at least one component not disposed inside the first case 300.

Specifically, the second case 400 is open at the top and closed at the bottom thereof, and the first case 300, the first elastic part 160, the second diaphragm 150, the third diaphragm 230, and the central axis. It may have an interior space to accommodate 140. However, the present invention is not limited thereto.

Meanwhile, in the present disclosure, the bone conduction unit 10 may further include a silicon member 500.

In detail, the silicon member 500 may be coupled to the second case 400 such that one surface of the silicon member 500 contacts a region of the body of the user and the other surface covers the open upper portion of the second case 400. Here, the bonding of the silicon member 500 may be combined with an adhesive or at least one protrusion and a groove. However, the present invention is not limited thereto.

In the present disclosure, the silicon member 500 may include at least one first perforation 510.

Specifically, the bone conduction unit 10 is not provided with at least one perforation in the second case 400, but the air is not provided inflow / outflow or one hole is not provided with sufficient diameter inflow air If congestion occurs during the outflow, the amplitude, wavelength, or period of the vibration to be amplified through friction with air may not be smooth as intended by the user.

Therefore, the silicon member 500 may include at least one first perforation 510 for maintaining the air pressure inside the second case 400 to be equal to the air pressure outside.

Meanwhile, in the present disclosure, the second case 400 may include at least one second perforation 410 on the side of the second case 400 to transmit the sound generated by the sound generator 200 to the outside. Can be. Here, the side of the second case 400 may be a direction toward the user's ear. Thus, the sound generated by the sound generator 200 may be output toward the user's ear.

In addition, when the second case 400 includes the second perforation 410, the air pressure inside the second case 400 may be more smoothly maintained to be the same as the outside air pressure. Hereinafter, the transmission of sound and the flow of air through the first perforation 510 and the second perforation 410 will be described later with reference to FIG. 7.

Meanwhile, according to the above-described configuration, the bone conduction unit 10 includes the vibration generating unit 100 and the sound generating unit in at least one case, so that it is possible to compensate for the low frequency output, which is a disadvantage of the bone conduction speaker. It is possible. In addition, since the vibration generating unit 100 and the sound generating unit 200 are supplied with a magnetic field using one magnetic unit, the size of the bone conduction unit 10 may be reduced.

2 is a cross-sectional view illustrating a bone conduction unit having a magnetic part according to some embodiments of the present disclosure. For the features overlapping the features described above with reference to FIG. 1 among the features of the contents shown in FIG. 2, refer to the contents described in FIG. 1 and the description thereof will be omitted.

Referring to FIG. 2, the magnetic part 600 may include a first magnet 610, a second magnet 620, and a connection part 630.

The first magnet 610 may have a disk shape having a first diameter. Here, the first diameter may be equal to or smaller than the diameter of the first plate 110 and the second plate 210. However, the present invention is not limited thereto.

The second magnet 620 may have a third through hole having a second diameter larger than the first diameter.

For example, the second magnet 620 may be formed in a ring shape having a third through hole so that the first magnet 610 may be inserted therein. However, the present invention is not limited thereto.

The connection part 630 may have a third thickness thinner than the first thickness of the first magnet 610 and the second thickness of the second magnet 620, and may connect the first magnet 610 and the second magnet 620. have.

In detail, the connection part 630 may include a through hole having the same diameter as the first diameter of the first magnet 610. In addition, the first magnet 610 may be coupled to the through hole provided in the connection part 630. In addition, the connection part 630 may be coupled to the second magnet 620 by having an outer diameter having the same diameter as that of the third through hole. Accordingly, the first magnet 610 and the second magnet 620 may be connected through the connection portion 630. However, the present invention is not limited thereto, and the connection part 630 may couple the first magnet 610 and the second magnet 620 through an adhesive or the like.

Meanwhile, the first coil insertion hole 640 may be formed on the first surface of the magnetic part 600 due to the difference in thickness of the first magnet 610, the second magnet 620, and the connection part 630. have. In addition, the second coil insertion hole 650 may be formed on the second surface of the magnetic part 600 due to the difference in thickness of the first magnet 610, the second magnet 620, and the connection part 630. have.

Here, the first coil insertion hole 640 may be a hole into which at least a portion of the first coil 120 is inserted. The second coil insertion hole 650 may be a hole into which at least a portion of the second coil 220 is inserted.

When at least a portion of the first coil 120 and the second coil 220 are the first coil insertion hole 640 and the second coil insertion hole 650, respectively, the first coil 120 and the second coil 220. ) May use the magnetic field provided by the magnetic part 600 more efficiently.

Meanwhile, according to some embodiments of the present disclosure, the connection part 630 may have magnetic properties.

For example, the connection part 630 may be a magnet having magnetic properties, or may be magnetic by applying a magnetic spray or the like. However, the present invention is not limited thereto, and the connection part 630 may not have magnetic properties.

According to some embodiments of the present disclosure, the magnetic forces of the first magnet 610, the second magnet 620, and the connecting portion 630 may be different.

In detail, the first magnetic force of the first magnet 610 and the second magnetic force of the second magnet 620 may be different. In addition, the second magnetic force of the second magnet 620 and the third magnetic force of the connector 630 may be different. In addition, the first magnetic force of the first magnet 610 and the third magnetic force of the connector 630 may be different. As described above, when the magnetic forces of the first magnet 610, the second magnet 620, and the connecting portion 630 are different from each other, the vertical movement generated in the first coil 120 and the second coil 220 may occur. The amplitude or wavelength of the vibrations may be greater or more diverse.

However, the present invention is not limited thereto, and the magnetic forces of the first magnet 610, the second magnet 620, and the connection part 630 may be the same or similar.

In detail, the first magnetic force of the first magnet 610 may correspond to the second magnetic force of the second magnet 620. In addition, the third magnetic force of the connector 630 may correspond to the second magnetic force of the second magnet 620.

Meanwhile, according to some embodiments of the present disclosure, the magnetic part 600 may be a magnet having a third coil insertion groove and a fourth coil insertion groove.

In detail, the magnetic part 600 is inserted into the magnetic part 600 so that at least a portion of the first coil 120 may be inserted into the first surface and is smaller than the first diameter of the magnetic part 600. A third coil insertion groove having a diameter as an outer diameter and a third diameter smaller than the second diameter as the inner diameter may be provided.

That is, the magnetic part 600 may include a third coil insertion groove having a width sufficient to insert at least a portion of the first coil 120 on the first surface.

In addition, the magnetic part 600 is inserted into the magnetic part 600 so that at least a portion of the second coil 220 may be inserted into the second surface, and the fourth diameter is smaller than the first diameter of the magnetic part 600. It may have a fourth coil insertion groove having an outer diameter and having a fifth diameter smaller than the fourth diameter as the inner diameter.

That is, the magnetic part 600 may include a fourth coil insertion groove having a width sufficient to insert at least a portion of the second coil 220 on the second surface.

As described above, when at least a portion of the first coil 120 and the second coil 220 are inserted into the first coil insertion hole 640 and the second coil insertion hole 650, respectively, the first coil 120 And the amplitude or wavelength of the vibration of the vertical movement generated in the second coil 220 may be even larger or more varied.

On the other hand, the bone conduction unit 10 may further include a second elastic portion 170 for further amplifying the vibration generated in the first coil 120.

Hereinafter, a specific embodiment in which the bone conduction unit 10 includes the second elastic portion 170 will be described with reference to FIG. 3.

3 is a cross-sectional view for describing a bone conduction unit having a second elastic portion according to some embodiments of the present disclosure. For the features overlapping the features described above with reference to FIG. 1 among the features of the contents shown in FIG. 3, refer to the contents described in FIG. 1 and the description thereof will be omitted.

Referring to FIG. 3, the vibration generating unit 100 may further include a second elastic unit 170.

In detail, the vibration generating unit 100 includes a second through hole through which the central axis 140 penetrates, and is provided in the second case 400 to be provided between the first elastic unit 160 and the second diaphragm 150. It may further include a second elastic portion 170 is installed.

On the other hand, the second elastic portion 170 may be in the shape of a disc of a thin plastic material so as to further amplify the vibration generated in the first diaphragm 130 to be transmitted to the first elastic portion 160.

For example, the second elastic part 170 may be made of a material such as polyetherimide (PEI), polyphenylen sulfide (PPS), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), or the like. However, the present invention is not limited thereto.

On the other hand, in the present disclosure, the second elastic portion 170 is provided with at least one opening having a predetermined pattern to efficiently amplify the vibration of the air generated by the vibration or vibration generated in the first diaphragm 130. can do. Here, the predetermined pattern may have a shape similar to a wing of a propeller or a fan. However, the present invention is not limited thereto. The second elastic part 170 includes at least one opening having a predetermined pattern, thereby further amplifying vibration through frictional force with the fluid generated according to the flow of the fluid inside the bone conduction unit 10. Can be. In addition, the preset pattern may be the same as or similar to the preset pattern of the first elastic part 160. However, the present invention is not limited thereto.

Meanwhile, according to some embodiments of the present disclosure, the third diameter of the second elastic part 170 may be different from the fourth diameter of the first elastic part 160. In addition, the amplitude, the wavelength or the period of the vibration amplified by the second elastic portion 170 is amplified differently from the amplitude, the wavelength or the period of the vibration amplified by the first elastic portion 160, the vibration generating unit 100 Can produce a much richer sound. However, the present invention is not limited thereto, and the third diameter and the fourth diameter may be the same.

Meanwhile, in the present disclosure, the second case 400 may couple the second elastic portion 170 to one region of the inner circumferential surface.

In detail, the second case 400 may include a mounting part 420 and at least one second protrusion 430 in one region of the inner circumferential surface. And, when the second elastic portion 170 is mounted on the mounting portion 420 so that at least one groove provided therein is coupled to the second protrusion 430, the second elastic portion 170 is the second case 400 Can be coupled to. However, the present invention is not limited thereto.

On the other hand, as described above, the bone conduction unit 10 may further include a second elastic portion 170 to amplify the vibration to provide a more rich sound to the user.

4 is an exploded view illustrating a vibration generator and a sound generator coupled to a first case according to some embodiments of the present disclosure. For the features overlapping the features described above with reference to FIGS. 1 to 3 among the features of the contents shown in FIG. 4, the descriptions of FIGS. 1 to 3 will be omitted herein.

Referring to FIG. 4, the bone conduction unit 10 includes a first case 300, a magnetic part 600, a first plate 110, a second plate 210, a first coil 120, and a second coil. And 220, a central axis 140, a first elastic portion 160, a first diaphragm 130, a second diaphragm 150, and a third diaphragm 230. However, the present invention is not limited thereto.

The first case 300 has at least the magnetic part 600, the first plate 110, the second plate 210, the first coil 120, the second coil 220, and the central axis 140 therein. A portion of the first elastic portion 160 and the first diaphragm 130 may be provided to accommodate a space.

In detail, the first case 300 may have a cylindrical shape in which an upper portion and a lower portion are opened and closed on the side. Accordingly, the first case 300 has a magnetic part 600, a first plate 110, a second plate 210, a first coil 120, a second coil 220, and a central axis 140 therein. At least a portion of the first elastic portion 160, and may have a hollow to accommodate the first diaphragm 130.

The third diaphragm 230 may be coupled to an open lower portion of the first case 300. However, the present invention is not limited thereto.

Meanwhile, in the present disclosure, the third diaphragm 230 may include at least one slot having a preset pattern. Here, the slot may be a groove processed to have a constant length in a straight line. However, the present invention is not limited thereto.

In detail, the third diaphragm 230 may include at least one slot having a predetermined pattern to allow the fluid to move better and friction in the flow of the fluid inside the first case 300. . However, the preset pattern is not limited to the example shown in FIG. 4.

The second plate 210 may be located above the third diaphragm 230. The second plate 210 may be installed inside the first case 300 to be spaced apart from the third diaphragm 230. That is, the second plate 210 may be coupled to the magnetic part 600, and may be installed inside the first case 300 to be spaced apart from the third diaphragm 230.

The second plate 210 may perform a function of concentrating a magnetic field provided by the magnetic part 600.

The second coil 220 may be provided to surround the outer circumferential surface of the second plate 210 and may be provided inside the first case 300. In addition, the second coil 220 may receive an electrical signal provided from the outside. When the second coil 220 receives the electrical signal, the second coil 220 may move up and down by interacting with the magnetic part 600 according to the direction, intensity, and frequency of the received electrical signal.

The magnetic part 600 may be provided inside the first case 300. The magnetic part 600 may form a magnetic field required for driving the bone conduction unit 10.

The first plate 110 may be coupled to the top surface of the magnetic part 600, and the second plate 210 may be coupled to the bottom surface of the magnetic part 600.

The first plate 110 may be coupled to at least a portion of the first surface of the magnetic part 600 and may be provided inside the first case 300. In addition, the first plate 110 may perform a function of concentrating a magnetic field provided by the magnetic part 600.

The first coil 120 may be provided to surround the outer circumferential surface of the first plate 110 and may be provided inside the first case 300. In addition, the first coil 120 may receive an electrical signal provided from the outside. When the first coil 120 receives the electric signal, the first coil 120 may move up and down by interacting with the magnetic part 600 according to the direction, intensity, and frequency of the received electric signal.

The first diaphragm 130 may be coupled to an upper side of the first coil 120 and may be provided inside the first case 300. In addition, the first diaphragm 130 may move up and down by the movement of the first coil 120.

One end of the central shaft 140 may be combined with one region of the first diaphragm 130 to be provided inside the first case 300, and the other end may be provided outside the first case 300. In addition, the central axis 140 may transmit the vertical motion received by the first diaphragm 130 from the first coil 120 to the second diaphragm 150.

The first elastic part 160 may be coupled to one end of the first case 300 to amplify the vibration generated in the bone conduction unit 10.

In detail, the first elastic part 160 includes at least one groove 162 provided in the first elastic part 160 and at least one first protrusion 310 provided at one end of the first case 300. Can be combined through.

The first elastic part 160 may include at least one opening 161 having a predetermined pattern.

In detail, the first elastic part 160 may include at least one opening 161 having a predetermined pattern to allow the air inside the first case 300 to move better and to generate friction. .

Here, the preset pattern may have a shape similar to a wing of a propeller or a fan as shown in FIG. 4. However, the present invention is not limited thereto.

The second diaphragm 150 may be coupled to the other end of the central shaft 140 to be provided outside the first case 300. In addition, the second diaphragm 150 may receive the up and down motion generated in the first diaphragm 130 through the central axis 140, and transmit the received up and down motion to the outside.

On the other hand, according to the above configuration, the bone conduction unit 10 by using a single magnetic unit 600 in driving the vibration generating unit 100 and the sound generating unit 200, the unit price required for the production of the product Can be reduced.

5 is a diagram for describing a magnetic part, according to some exemplary embodiments. FIG. 6 is a cross-sectional view taken along line AA ′ of FIG. 5.

Referring to FIG. 5, the magnetic part 600 may include a first magnet 610, a second magnet 620, and a connection part 630. In this case, the first coil insertion hole 640 may be formed on the first surface of the magnetic part 600 by a difference in thickness of the first magnet 610, the second magnet 620, and the connection part 630.

Specifically, referring to FIG. 6, a first coil insertion hole 640 through which at least a portion of the first coil 120 may be inserted may be formed on the first surface of the magnetic part 600. In addition, a second coil insertion hole 650 into which at least a portion of the second coil 220 may be inserted may be formed on the second surface of the magnetic part 600.

However, the present invention is not limited thereto, and the magnetic part 600 may be one magnet having a third coil insertion groove and a fourth coil insertion groove.

In detail, the magnetic part 600 is inserted into the magnetic part 600 so that at least a portion of the first coil 120 may be inserted into the first surface and is smaller than the first diameter of the magnetic part 600. A third coil insertion groove having a diameter as an outer diameter and a third diameter smaller than the second diameter as the inner diameter may be provided.

That is, the magnetic part 600 may include a third coil insertion groove having a width sufficient to insert at least a portion of the first coil 120 on the first surface.

In addition, the magnetic part 600 is inserted into the magnetic part 600 so that at least a portion of the second coil 220 may be inserted into the second surface, and the fourth diameter is smaller than the first diameter of the magnetic part 600. It may have a fourth coil insertion groove having an outer diameter and having a fifth diameter smaller than the fourth diameter as the inner diameter.

That is, the magnetic part 600 may include a fourth coil insertion groove having a width sufficient to insert at least a portion of the second coil 220 on the second surface.

On the other hand, according to some embodiments of the present disclosure, the magnetic part 600 integrally formed to have the third coil insertion groove and the fourth coil insertion groove may have different magnetic properties for each preset region.

In detail, the magnetic part 600 integrally formed may include a first area corresponding to the first magnet 610, a second area corresponding to the second magnet 620, and a third area corresponding to the connection part 630. This may be different.

For example, when additional magnetic sprays or the like that can amplify the magnetic force are differently applied to the first region, the second region, and the third region, the magnetic forces of the first region, the second region, and the third region are different. can do.

Specifically, the fourth magnetic force of the first region and the fifth magnetic force of the second region may be different. Also, the fifth magnetic force and the sixth magnetic force in the third region may be different. In addition, the fourth magnetic force and the sixth magnetic force may be different. However, the present invention is not limited thereto, and magnetic forces of the first region, the second region, and the third region may correspond to each other.

According to some embodiments of the present disclosure, the magnetic part 600 may include a coil insertion groove only on one surface.

For example, the magnetic part 600 may include the first coil insertion hole 640 or the third coil insertion groove on the first surface, and may not include the coil insertion hole on the second surface.

For another example, the magnetic part 600 may include the second coil insertion hole 650 or the fourth coil insertion groove on the second surface, and may not include the coil insertion hole on the first surface.

In this case, the amplitude or period of the sound generated by the vibration generator 100 and the sound generator 200 may be more diverse. However, the present invention is not limited thereto.

7 is a flowchart illustrating an example of a method in which vibrations or sounds generated in a bone conduction unit are delivered to a user according to some embodiments of the present disclosure.

Referring to FIG. 7, the silicon member 500 provided in the bone conduction unit 10 may be mounted on the temporal bone B of the user. However, the site where the bone conduction unit 10 is mounted to the user is not limited thereto.

One side of the silicon member 500 in close contact with the user's temporal bone B may transmit the vibration transmitted from the second diaphragm 150 coupled to the other surface to the temporal bone B of the user.

In this case, the silicon member 500 may include at least one first perforation 510 to allow the fluid inside the second case 400 to escape to the outside of the second case 400. If at least one first perforation 510 is not provided in the silicon member 500, the air inside the second case 400 may not escape or the diameter of the first perforation 510 may not be sufficient. If air is introduced through the hole and congestion occurs, the amplitude, wavelength, or period of vibration to be amplified through friction with the air may not be smoothly performed as intended by the user.

Therefore, in the present disclosure, the silicon member 500 is provided with at least one first perforation 510 to smooth the flow of air inside the second case 400.

Meanwhile, the second case 400 may include at least one second perforation 410 on the side of the second case 400 for outputting the sound generated by the sound generator 200 to the outside. Here, the side of the second case 400 may be a direction toward the user's ear. Thus, the sound generated by the sound generator 200 may be output toward the user's ear.

Meanwhile, the second perforation 410 may also serve to help circulation of the fluid in the second case 400.

For example, the air inside the second case 400 is introduced through the second perforation 410 and discharged through the first perforation 510 or the air inside the second case 400 is the first perforation 510. It may be introduced through) and discharged through the second perforation 410. However, the present invention is not limited thereto.

According to some embodiments of the present disclosure described above, the bone conduction unit 10 may be mounted on the user's body to transmit sound to the user. In addition, the bone conduction unit 10 may simultaneously have advantages of the bone conduction and the existing sound output device in delivering sound to the user. Specifically, the bone conduction unit 10 may simultaneously have the advantages of a bone conduction faithful to the reproduction of the high range and an air mediated speaker faithful to the reproduction of the low range. In addition, the bone conduction unit 10 may reduce the cost of production by generating sound through one magnetic unit 600 while simultaneously having the function of bone conduction and the function of the existing sound output device.

In addition, according to some embodiments of the present disclosure, the bone conduction unit 10 may provide a complex sound under the control of a user, or may output only a sound through air through the sound generator 200 or may generate a vibration. 100 may be used to provide sound using only bone conduction. Therefore, the user may be provided with the sound required by the user even more conveniently.

The description of the presented embodiments is provided to enable any person skilled in the art to make or use the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the scope of the present disclosure. Thus, the present disclosure should not be limited to the embodiments set forth herein but should be construed in the broadest scope consistent with the principles and novel features set forth herein.

Claims (17)

A magnetic part forming a magnetic field;
A vibration generating unit provided on the first surface of the magnetic part to form vibration using the magnetic field; And
A sound generating unit provided on a second surface of the magnetic unit opposite to the first surface and generating sound using the magnetic field;
Including,
The vibration generating unit;
A first plate coupled to at least a portion of the first surface and concentrating the magnetic field;
A first coil provided to surround an outer circumferential surface of the first plate to receive an electrical signal provided from the outside;
A first diaphragm coupled to an upper side of the first coil and receiving vibration generated by the first coil;
A central axis having one end coupled to one region of the first diaphragm;
A second diaphragm coupled to the other end of the central axis and transmitting vibration to the outside; And
A first elastic part provided between the second diaphragm and the first diaphragm and having a first through hole through which the central axis passes and amplifying the vibration;
Including,
Bone conduction unit.
delete The method of claim 1,
The sound generator;
A second plate coupled to at least a portion of the second face and concentrating the magnetic field;
A second coil provided to surround an outer circumferential surface of the second plate to receive an electrical signal provided from the outside; And
A third diaphragm coupled to a lower side of the second coil and provided to be spaced apart from the second plate so as to vibrate up and down;
Including,
Bone conduction unit.
The method of claim 3, wherein
The magnetic part, the first plate, the second plate, the first coil, the second coil, the first diaphragm and the hollow to accommodate at least a portion of the central axis therein, the first elastic portion at one end A first case coupled and the third diaphragm coupled to the other end;
Further comprising,
Bone conduction unit.
The method of claim 4, wherein
A second case having an upper space open and a lower part closed and having an inner space to receive the first case, the first elastic portion, the second diaphragm, the third diaphragm and the central axis;
More,
The vibration generating unit,
The second diaphragm is disposed to face the upper portion of the second case,
The sound generator,
The third diaphragm is disposed to face the bottom of the second case,
Bone conduction unit.
The method of claim 5, wherein
The vibration generating unit,
Further comprising a second elastic portion provided in the second case so as to be provided between the first elastic portion and the second diaphragm having a second through hole through which the central axis passes,
Bone conduction unit.
The method of claim 3, wherein
The first rotational speed of the first coil wound on the first plate and the second rotational speed of the second coil wound on the second plate are different from each other.
Bone conduction unit.
The method of claim 3, wherein
A first rotational speed of the first coil wound around the first plate is less than a second rotational speed of the second coil wound around the second plate
Bone conduction unit.
The method of claim 3, wherein
The first diameter of the first coil and the second diameter of the second coil are different,
Bone conduction unit.
The method of claim 3, wherein
The first diameter of the first coil is smaller than the second diameter of the second coil,
Bone conduction unit.
The method of claim 5, wherein
At least one surface is coupled to the second case and the second diaphragm so that the user's surface is in contact with an area of the body and the other surface covers the open upper portion, and the air pressure inside the second case is maintained to be equal to the outside air pressure. A silicon member having one first perforation;
Further comprising,
Bone conduction unit.
The method of claim 5, wherein
The second case,
At least one second perforation for outputting the sound generated by the sound generating unit to the outside of the second case,
Bone conduction unit.
The method of claim 3, wherein
The magnetic part,
An inner diameter of a third diameter smaller than the second diameter with a second diameter drawn into the magnetic part and having a second diameter smaller than the first diameter of the magnetic part so that at least a portion of the first coil can be inserted into the first surface The first coil insertion groove having a; And
Inner diameter of the fourth diameter is introduced into the magnetic portion so that at least a portion of the second coil can be inserted into the second surface and having a fourth diameter smaller than the first diameter as an outer diameter and having a fifth diameter smaller than the fourth diameter. A second coil insertion groove;
Including,
Bone conduction unit.
The method of claim 3, wherein
The magnetic part,
A first magnet having a first diameter;
A second magnet having a third through hole having a second diameter larger than the first diameter;
A connection part having a first thickness of the first magnet and a third thickness thinner than the second thickness of the second magnet and connecting the first magnet and the second magnet;
A third coil insertion groove formed on the first surface by a difference in thickness of the first magnet, the second magnet, and the connection part; And
A fourth coil insertion groove formed on the second surface by a difference in thickness of the first magnet, the second magnet, and the connection portion;
Including more;
Bone conduction unit.
The method of claim 14,
The connection portion is magnetic,
Bone conduction unit.
The method of claim 15,
The magnetic forces of the first magnet, the second magnet and the connecting portion are different from each other,
Bone conduction unit.
The method of claim 14,
The first magnetic force of the first magnet is the same as the second magnetic force of the second magnet,
The third magnetic force of the connection portion is the same as the second magnetic force,
Bone conduction unit.

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