KR100726326B1 - Vibration speaker and portable terminal including same - Google Patents

Abstract

A vibration speaker and a portable terminal including the same are provided to stabilize a revolution speed of a vibrating magnet by including a tensioner holding the internal magnet directly, and to replace a heavy magnet with a light magnet through a corresponding tensioner. In a vibration speaker for transferring sound to the skin through vibration, a voice coil generates magnetic force by receiving a sound signal from the outside. A magnet(50) having magnetism interacts with the magnetic force generated in the voice coil. A basket(60) accommodates the magnet. A tensioner has horizontality-maintaining tension, and maintains horizontality by supporting the corresponding magnet directly by being combined with the basket accommodating the magnet. A face plate(20) transfers up and down movement of the voice coil or the magnet to the skin. A rear cover(90) forms outer appearance of the speaker by being connected to the face plate.

Description

VIBRATION SPEAKER AND PORTABLE TERMINAL INCLUDING SAME}

1 is an exploded perspective view showing a vibration speaker to which the prior art is applied.

2 is a cross-sectional view showing a vibration speaker to which the prior art is applied.

3 is an exploded perspective view of the vibration speaker according to the first embodiment of the present invention.

4 is a cross-sectional view of the vibration speaker according to the first embodiment of the present invention.

5 is an exploded perspective view of a vibration speaker according to a second embodiment of the present invention;

6 is a cross-sectional view of the vibration speaker according to the second embodiment of the present invention.

7 is a view showing a face plate to which the present invention is applied.

8 is a view showing a tensioner to which the present invention is applied.

9 is a view showing a horizontal assist tool to which the present invention is applied.

10 is an exploded perspective view of a vibration speaker according to a third embodiment of the present invention.

11 is a cross sectional view of a vibration speaker in accordance with a third embodiment of the present invention;

12 is a view showing another form of a face plate to which the present invention is applied.

13 is a view showing another form of a tensioner to which the present invention is applied.

The present invention relates to a vibrating speaker, and more particularly, to a vibrating speaker that vibrates by hitting the skin and is provided with a tensioner that directly grabs an internal magnet to enhance the bass and at the same time to make a compact speaker. It is about.

The sound heard by the human ear is transmitted in the form of a wave, and the wave-shaped sound transmitted to the human ear moves the air molecules and vibrates the human eardrum so that the human can hear it.

In more detail, the wave-like sound enters the human ear canal, or through the ear canal, and vibrates the eardrum, allowing the cells of the inner ear to transmit vibrations to the brain and the human being able to hear the sound.

Here, the frequency range of the sound that can be heard by humans is 20Hz ~ 20,000Hz and the sound suitable for human hearing is 125Hz ~ 8,000Hz, which is called the conversational range, and the frequency used mainly for humans to communicate with each other is between 500Hz and 2,000Hz. to be.

In addition, normal people can hear all sounds of 20Hz ~ 20,000Hz, but the hearing impaired people, such as hearing impaired, senile deaf and occupational hearing loss due to the abnormalities of the outer ear and middle ear is a case that does not hear the sound of all wavelengths or a specific wavelength well.

Such a vibrating speaker is disclosed in patent application No. 92117, filed on September 22, 2006 by the applicant.

Looking at the Republic of Korea Patent Application No. 92117 through Figures 1 and 2, the vibration speaker is mounted on the cylindrical case 120, the upper surface of the case is open, the open surface of the case, and the skin through the upper surface on the surface The contact plate 110, which is in contact with the case and protrudes in the inner direction of the case, is provided on the lower surface of the contact plate 110, and a center portion is penetrated by the through pins. Acoustic diaphragm 140 to be transmitted to the contact plate, the voice diaphragm 141 is attached and fixed to the lower portion of the acoustic diaphragm to generate a magnetic force by receiving an acoustic signal from the outside, the center portion is penetrated by the through pin The magnet 150 is physically vibrated by interaction with the magnetic force generated by the voice coil having magnetic properties, and a central portion is penetrated by the through pins. The magnet holder 170 that the magnet is attached to the bottom of the box form of vibration with the vibration of the magnet the magnet case 160 is formed in a cylindrical shape and coupled to the magnet case 160 vibrate with the vibration of the magnet. The plate-shaped first coupled to the open upper surface of the magnet holder, the center portion is penetrated by the penetrating pin, to hold the vibrating magnet, the magnet case and the magnet holder and to maintain the distance between the voice coil and the magnet It is configured to include a tension plate 130 and a plate-like second tension plate 180 is coupled to the open lower surface of the magnet holder and the center portion is penetrated by the through pin.

However, such a conventional vibrating speaker has a problem in the revolving speed of the magnet when playing a sound that requires fast magnet vibration, and the speaker unit becomes large and heavy as the weight of the magnet is inevitably configured to strengthen the bass. There is a problem.

The present invention has been made to solve the above problems is to provide a tensioner for holding the internal magnet directly to stabilize the revolving speed of the vibrating magnet, and replace the heavy magnet with a light magnet through the tensioner It is to provide a vibrating speaker that allows.

Vibration speaker according to the present invention for achieving the above object, Vibration speaker for transmitting sound to the skin in vibration, Voice coil for generating a magnetic force by receiving an acoustic signal from the outside; A magnet having magnetism and interacting with a magnetic force generated in the voice coil; A basket in which the magnet is accommodated; A tensioner having a predetermined horizontal holding tension and coupled to the basket in which the magnet is accommodated to directly support the magnet and to level the magnet; A face plate which transmits vertical movement of the voice coil or magnet to the skin; And a rear cover combined with the face plate to form an external appearance of a speaker. Characterized in that it comprises a.

Preferably, the inner surface of the face plate is characterized in that the waterproof sheet for blocking the water flowing into the speaker unit.

More preferably, the outer surface of the rear cover is characterized in that the horizontal aid is provided including a tensioner to hold the level of the speaker unit when the speaker contacts the skin.

More preferably, the tensioner comprises an outer ring; A through ring provided in the inner circumference of the outer ring and accommodating the basket; At least one support branch formed in a plate shape and connecting the outer circumference ring and the through ring in a curved shape; Characterized in that it comprises a.

More preferably, the tensioner is connected to the outer ring is fitted with a fitting hole; It further comprises, The tensioner is fixed to the rear cover through the fitting hole is characterized in that for separating the basket from the bottom surface the basket containing the magnet.

More preferably, the tensioner is connected to the outer ring is fitted with a fitting hole; It further comprises, The tensioner is fixed to the face plate through the fitting hole spaced apart from the basket a predetermined distance from the bottom of the basket containing the magnet, characterized in that it is interlocked with the depression according to the skin contact of the face plate. .

More preferably, the tensioner is an outer peripheral ring formed in a plate shape; A through ring provided in the inner circumference of the outer ring and formed in a plate shape; At least one support branch formed in a plate shape and connecting the outer circumference ring and the through ring in a curved shape; Characterized in that it comprises a.

More preferably, the tensioner is provided with a fitting hole in the connection portion of the outer ring and the support branch, the tensioner is fixed to the rear cover through the fitting hole is a predetermined distance from the bottom surface of the basket containing the magnet Characterized by spaced apart.

More preferably, the tensioner is provided with a fitting hole in the connection portion between the outer circumference ring and the support branch, the tensioner is fixed to the face plate through the fitting hole so that the basket containing the magnet is spaced from the bottom surface by a predetermined distance. Spaced apart, it is characterized in that the recessed in conjunction with the depression according to the skin contact of the face plate.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention.

First, the vibration speaker according to the first embodiment of the present invention will be described.

3 is an exploded perspective view of a vibrating speaker according to a first embodiment of the present invention, Figure 4 is a combined cross-sectional view of the vibration speaker according to the first embodiment of the present invention.

3 and 4, the vibration speaker according to the present invention includes a face plate 20, a coil 30, a magnetic shield plate 40, a magnet 50, a basket 60 and a rear cover 90. It consists of.

Here, the face plate 20 is in direct contact with the skin of the human body to transmit the vibrations inside the skin. The face plate 20 is a structure that delivers the sound of the speaker to the skin by making contact with the human skin. The face plate 20 is made of a soft material such as silicon to smoothly transmit the sound transmitted by vibrating inside the speaker to the skin. That is, the face plate 20 has a structure for adjusting the intensity of each zone as a final transfer plate of the sound source and to smoothly transmit the transmitted sound.

The coil 30 is attached to the lower side of the diaphragm (not shown) by a heat resistant rubber-based strong adhesive, and receives a sound signal input from the outside through a leader line (not shown) to drive the corresponding speaker unit. .

In addition, the magnet 50 and the basket 60 are positioned below the coil 30, and the magnet 50 is embedded in the internal space of the basket 60.

At this time, the magnet 50 having a hollow shape is coupled to the basket 60 by magnetic force and bonding in a state of being placed on the bottom bottom surface of the basket 60 made of a metal material, preferably neo Neodymium magnets will be used.

Here, in the basket 60 of the recessed shape in which the inside is recessed to enable the magnetic field formation, its circumferential surface is such that the magnet 50 is accommodated so as to maintain a constant distance from the magnet 50 accommodated therein. The coil 30 is positioned in a space spaced from the magnet 50 and the basket 60.

The magnet 50 and the basket 60 is preferably bonded using ultrasonic vibration bonding and adhesive.

At this time, the basket 60 is configured to change the flow of air in one direction with a negative primary attenuation and acts as a body that determines the connection of each component.

The rear cover 90 forms the overall appearance of the speaker, and together with the face plate 20, a magnetic case of the magnet 50 as a spatial case allowing the sound image of the speaker unit to form a virtual stage inside. It is formed as a structure for enhancing the function. In addition, the rear cover 90 functions as a negative reflector and functions as a cover of the speaker unit protruding to the outside.

Therefore, when an electrical acoustic signal is applied to the coil 30 from the outside, a physical vibration force generated by suction and repulsion due to interaction between the magnetic force generated in the coil 30 and the magnetic field in the magnet 50 is generated. Accordingly, the coil 30 and the magnet 50 vibrate up and down.

That is, the vibration force according to the application of the sound signal is to induce the vibration of the coil 30 and the magnet 50.

The face plate 20 described above will now be described in detail with reference to FIG. 7.

7 shows one embodiment of a face plate 20 equipped with an integral tensioner 25.

The face plate 20 is provided with an outer edge 21 on the surface which is in contact with the skin upward and a circular central dome 22 provided in a dome shape at the center. The rim 21 and the central dome 22 are formed to have a flat flat surface on the upper surface in contact with the skin.

Between the edge 21 and the central dome 22 is a one-piece tensioner 25 in the form of a thin plate. As shown in the figure, the integrated tensioner 25 is composed of a circular outer circumference ring 26 corresponding to the circular outer rim 21 and a plurality of supports formed flat in the outer circumference of the outer circumference ring 26. Branches 27 are connected to be coupled to the circular central dome 22.

At this time, the outer circumference ring 26 and the support branch 27 forming the integral tensioner 25 are formed in a thin plate shape.

Accordingly, the outer rim 21 and the central dome 22 in the face plate 20 are in contact with the skin of the human body to transmit internal vibration as a blow. In addition, the integrated tensioner 25 has a predetermined horizontal maintenance tension to tightly control the vertical piston vibration transmitted from the inside of the speaker when the vertical vibration of the sound is transmitted. Therefore, only by properly adjusting the horizontal tension of the integrated tensioner 25, the face plate 20 can transmit only the vibration suitable to the skin hitting the skin even when the internal vibration is excessive.

At this time, the outer rim 21 and the outer ring 26 as the case is coupled by a plurality of joints 28, these joints 28 are the outer ring 26 and the central dome (for a stronger tension) It is preferable that the supporting branches 27 are connected to each other on the concentric circles with the plate-shaped support branches 27).

That is, the joint 28 is connected at the intermediate position of each of the four support branches 27 in FIG. 7 so that the integrated tensioner 25 has a stronger and softer elastic force, which is generated in the upper and lower vibrations, and It is possible to respond more accurately to the sound.

Next, a vibration speaker according to a second embodiment of the present invention will be described.

5 is an exploded perspective view of a vibrating speaker according to a second embodiment of the present invention, Figure 6 is a combined cross-sectional view of the vibrating speaker according to a second embodiment of the present invention.

5 and 6, the vibration speaker according to the present invention, the mastoid 10, the face plate 20, the waterproof sheet 20a, the coil 30, the magnetic shield plate 40, the magnet ( 50), the basket 60, the tensioner 80, the rear cover 90 and the horizontal aid 100.

Here, the description of the same configuration as in the first embodiment is omitted.

The mastoid 10 is inserted into a hole formed in the face plate 20 to be coupled to the face plate 20 and in contact with the skin of the user to smoothly transmit vibration to the user.

The waterproof sheet 20a blocks the wearer's sweat or external moisture introduced into the speaker unit through the through hole of the face plate 20 to maintain durability of the internal vibration configuration. The waterproof sheet 20a may be made of a Temi sheet.

The magnetic shield plate 40 makes the flow of the magnetic field.

The tensioner 80 functions to hold the basket 60 in which the magnet 50 is accommodated so that the magnet 50 maintains the flow state in space.

That is, referring to FIG. 8, the tensioner 80 has a structure in which the curved support branches 83 are connected to the outer circumferential ring 81 about the through ring 82 into which the basket 60 is inserted. Have.

Therefore, the tensioner 80 having such a horizontal tension is forcibly supported so that the basket 60 in which the magnet 50 is accommodated can maintain a constant level in a flowed state.

In addition, since the tensioner 80 directly grabs the magnet 50 oscillating up and down to maintain the horizontal, thereby increasing the revolving speed of the magnet 50 oscillating up and down, the weight of the magnet 50 is less Even if you go out, it is possible to replace the heavy magnet 50 only by adjusting the tension of the tensioner 80.

Therefore, it is possible to achieve the same effect as mounting a heavy magnet by strongly adjusting the tension of the tensioner 80 without having to install a heavy magnet to enhance the bass or sound field.

In addition, since the tensioner 80 has a structure in which the basket 60 is inserted therein, the diameter of the speaker unit as a whole can be reduced, and the size of the speaker unit can also be made small.

Here, the tensioner 80 is fixed to the rear cover 90 by a bolt or the like through a fitting hole 85 formed in the fitting branch 84 therein, while being spaced apart from the bottom (surface of the rear cover). The tension is maintained so that the basket 60 in which the magnet 50 is accommodated is kept horizontal (see FIG. 6).

Here, in the structure of the second embodiment, only the internal coil 30 does not vibrate, but the actual magnet 50 also vibrates together. Therefore, accurate tension transmission is possible through the adjustment of the tension tension for the tensioner 80.

On the other hand, when the speaker unit is in close contact with the human body, the mastoid 10 or face plate 20 is pushed by the skin to some extent inside the speaker unit.

In order to overcome this problem, the tensioner 80 of the present invention may be fixed to the face plate 20 by bolts or the like without being fixed to the lower rear cover 90 as described above (the face of such a tensioner). The two plate fixation schemes are shown in FIGS. 11A and 11B).

When the tensioner 80 is fixed to the face plate 20 as described above, even when the face plate 20 is pushed by the skin when the speaker is worn on the human body, the tensioner 80 is also pushed together with the face plate 20. There is no fluctuation interval in the position of the magnet 50 during skin contact and non-skin contact time, so that sound transmission through vibration can be maintained more accurately.

In addition, the horizontal assisting tool 100 functions to hold the entire speaker unit horizontally when skin contact is made by connecting the speaker with the band of the headset.

That is, in order to prevent the speaker from coming into contact with the skin unevenly according to the angle of the skin surface when the speaker contacts the skin, the corresponding horizontal aid 100 is attached to the rear surface of the rear cover 90 to level the speaker unit. Maintained at full angle (360 °) allows the speaker unit to contact skin regardless of skin angle.

Here, the horizontal assisting tool 100 has an integrated tensioner 105 for horizontal maintenance therein as shown in FIG. 9. The integrated tensioner 105 has a thin plate shape and curved support branches 102 are formed on the outer circumferential ring 103 about a central through ring 101 into which a protrusion for engagement with the rear cover 90 is fitted. It has a structure to be connected. The integrated tensioner 105 is embedded in the horizontal assisting tool 100 through the plurality of joints 104.

At this time, the horizontal ring (100) and the outer ring 26 of the integrated tensioner 105 is coupled by a plurality of joints 104, these joints 104 are the outer ring 103 for a stronger tension ) And the outer peripheral ring side connection points of the support branch 102 connecting the through ring 101 and the concentric circles are alternately arranged to have a stronger horizontal holding tension.

Next, a vibration speaker according to a third embodiment of the present invention will be described.

10 is an exploded perspective view of a vibration speaker according to a third embodiment of the present invention, Figure 11 is a cross-sectional view of the combination of the vibration speaker according to the third embodiment of the present invention.

As shown in FIGS. 10 and 11, the vibrating speaker according to the present invention includes a mastoid 10, a face plate 20, a coil 30, a magnetic shield plate 40, a magnet 50, and a basket 60. ), Bushing 70, tensioner 80 and rear cover 90.

Here, the description of the same configuration as in the first embodiment and the second embodiment is omitted.

12, there is shown another form of an integrated tensioner 25 that is integrally provided on the face plate 20.

Referring to FIG. 12, the face plate 20 is provided with an outer edge 21 on the surface of which a skin contact is possible upward and a circular central dome 22 provided in a dome shape at the center.

And between the edge 21 and the central dome 22, the integrated tensioner 25 in the form of a thin plate is positioned. As shown in the figure, the integrated tensioner 25 is composed of a plurality of circular outer circumferential rings 26 corresponding to the circular outer rim 21 and the outer circumferential rings 26 are connected to the plurality of supporting branches 27. To be connected. That is, by forming a plurality of the outer circumferential ring 26 through this, the face plate 20 has a larger horizontal holding tension.

In this case, the support branches 27 connecting the respective outer circumferential rings 26 are alternately arranged on concentric circles, and also the support branches 27 connected to the outermost outer circumferential rings 26 and the joint 22 of the rim 22. (21) It is also preferable that they are arranged alternately on concentric circles.

Meanwhile, a predetermined through hole is formed in the magnet 50 and the basket 60, and the protrusion of the magnetic shield plate 40 is received downward in the through hole, and the hollow protrusion of the bushing 70 is raised. Are accepted.

That is, referring to FIGS. 11A and 11B, the hollow protrusion of the bushing 70 is fitted to the protrusion of the magnetic shield plate 40, and the magnet 50 is disposed on the outer surface of the hollow protrusion of the bushing 70. ) And the through-holes of the basket 60 are fitted so that the magnetic shielding plate 40, the magnet 50, the basket 60, and the bushing 70 are integrated.

And this bushing 70 is supported by the tensioner 80 at the bottom.

That is, as shown in Figure 13 through the through ring 82 of the tensioner 60, inserting the fittings such as bolts and the like by inserting the fittings into the through-hole provided in the back of the bushing 70, the corresponding tensioner The 60 and the bushing 70 are integrated, and as described above, the magnetic shield plate 40, the magnet 50, the basket 60, and the bushing 70 are integrated, and the magnetic shield plate 40 as a whole. ), The magnet 50, the basket 60, the bushing 70 is to be integrated with the tensioner 80 while being mounted on the tensioner 80.

Then, the tensioner 80 is inserted into the fitting hole 85 formed at the coupling point of the support branch 87 and the outer circumferential ring 81 in the tensioner 80 to cover the tensioner 80 with the rear cover 90 (Fig. 11b) or face plate 20 (see FIG. 11A).

Therefore, the tensioner 80 maintains the tension in the state spaced apart from the bottom surface (surface of the rear cover) so that the magnet 50 maintains a constant level.

The vibrating speaker having the above-described configuration may be used as a handset of the mobile terminal so that the contents of a call are directly transmitted to the user through vibration by being built in the receiver of the mobile terminal to be in contact with the skin of the user. Due to the characteristics of the vibrating speaker of the present invention having a small size to the acoustic speaker, it is possible to further miniaturize the mobile phone terminal.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited to drawing.

As described above, the vibration speaker shown in the present invention is provided with a tensioner to directly hold the internal magnet to stabilize the revolving speed of the vibrating magnet, and replace the heavy and large magnet with a light and small magnet through the tensioner This makes it possible to miniaturize the speaker unit and lighten the weight.

In addition, the magnet can be directly inserted into the tensioner, thereby making it possible to reduce the diameter of the entire speaker unit and to make it compact.

In addition, the tensioner for holding the magnet is fixed directly to the face plate so that even if the face plate is pushed by the skin when the speaker is worn, the tensioner is also pushed together with the face plate so that the variation of the magnet position during skin contact and skin non-contact time There is also an effect that the transmission of sound through vibration can be maintained more accurately.

In addition, if the speaker is connected to the headset with the band of the headset through the horizontal aids attached to the rear cover of the speaker, the entire speaker unit can be stably leveled even if it is in contact with the skin having an irregular outer surface. have.

Claims (10)

In the vibration speaker which transmits a sound to skin by vibration, A voice coil receiving magnetic signals from the outside to generate magnetic force; A magnet having magnetism and interacting with a magnetic force generated in the voice coil; A basket in which the magnet is accommodated; A tensioner having a predetermined horizontal holding tension and coupled to the basket in which the magnet is accommodated to directly support the magnet and to level the magnet; A face plate which transmits vertical movement of the voice coil or magnet to the skin; And A rear cover combined with the face plate to form an exterior of a speaker; Vibration speaker comprising a. The method of claim 1, Vibration speaker, characterized in that the inner surface of the face plate is provided with a waterproof sheet for blocking the water flowing into the speaker unit. The method of claim 2, Vibration speaker, characterized in that provided on the outer surface of the rear cover including a tensioner to level the speaker unit horizontally when the speaker contacts the skin. The method according to any one of claims 1 to 3, The tensioner Outer ring; A through ring provided in the inner circumference of the outer ring and accommodating the basket; At least one support branch formed in a plate shape and connecting the outer circumference ring and the through ring in a curved shape; Vibration speaker comprising a. The method of claim 4, wherein The tensioner A fitting branch connected to the outer ring and having a fitting hole; More, The tensioner is fixed to the rear cover through the fitting hole is a vibration speaker, characterized in that spaced apart from the bottom surface the basket in which the magnet is accommodated. The method of claim 4, wherein The tensioner A fitting branch connected to the outer ring and having a fitting hole; More, The tensioner is fixed to the face plate through the fitting hole spaced apart the basket containing the magnet from a predetermined distance from the bottom surface, vibrating speaker characterized in that it is interlocked with the depression caused by the skin contact of the face plate. The method according to any one of claims 1 to 3, The tensioner An outer circumferential ring formed in a plate shape; A through ring provided in the inner circumference of the outer ring and formed in a plate shape; At least one support branch formed in a plate shape and connecting the outer circumference ring and the through ring in a curved shape; Vibration speaker comprising a. The method of claim 7, wherein The tensioner A fitting hole is provided at the connection portion of the outer ring and the support branch, The tensioner is fixed to the rear cover through the fitting hole is a vibration speaker, characterized in that spaced apart from the bottom surface the basket in which the magnet is accommodated. The method of claim 8, The tensioner A fitting hole is provided at the connection portion of the outer ring and the support branch, The tensioner is fixed to the face plate through the fitting hole spaced apart from the basket a basket containing the magnet from the bottom surface, and vibrating speaker, characterized in that it is interlocked with the depression caused by the skin contact of the face plate. A portable terminal comprising a vibrating speaker according to claim 1 or 2 as a receiver.

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