KR20090102122A - Multi-function speaker - Google Patents

Abstract

PURPOSE: A multi-functional speaker is provided to improve vibration force by shortening a vibration transfer path of a vibration generator. CONSTITUTION: A multi-functional speaker(110) includes first and second covers(121,125), a vibration generator, a spring and a sound generator. The first and second covers are combined with one and the other sides of a frame respectively, and the vibration generator generates vibration by being placed inside the frame. The spring includes first and second spokes. The sound generator is coupled to the other side of the frame, and generates a sound by being vibrated from the one side to the other side of the frame.

Description

Multifunctional Speaker {MULTI-FUNCTION SPEAKER}

The present invention relates to a multifunctional speaker for generating a vibration signal and an acoustic signal.

1A is a cross-sectional view of a conventional multifunction speaker, and FIG. 1B is a perspective view of the spring shown in FIG. 1A, which will be described.

As shown, the upper and lower covers 13 and 15 are coupled to the upper and lower surfaces of the frame 11, respectively, and the upper and lower inner peripheral surfaces of the frame 11 Springs 20 are respectively installed.

Between the spring 20 and the spring 20 is provided with a vibration generating portion 30 for generating vibration having a yoke 31, a magnet 33 and a plate 35, the upper cover 13 and the upper side Between the spring 20 is provided with a sound generating portion 40 for generating a sound having a diaphragm 41 and the voice coil 45.

The spring 20 is formed in a ring shape, the outer circumferential portion 21 coupled to the inner circumferential surface of the frame 11, and an inner circumferential portion formed in the ring shape and disposed inside the outer circumferential portion 21, respectively. ) And a plurality of spokes 25 each connecting the outer circumferential portion 21 and the inner circumferential portion 23 integrally.

A support plate 31a of the yoke 31 having a support plate 31a and a pole 31b is coupled to the inner circumferential portion 23 of the lower side spring 20, and a magnet having a ring shape is provided to the support plate 31a. 33 and plate 35 are sequentially laminated and bonded.

The plate 35 is coupled to the inner circumferential portion 23 of the upper side spring 20, and the pole 31b penetrates the magnet 33 and the inner circumferential portion 23 of the plate 35 and the upper side spring 20. do. At this time, the inner diameter of the inner peripheral portion 23 of the upper side spring 20 is formed to be approximately similar to the inner diameter of the plate 35.

The edge portion of the diaphragm 41 is fixed to the frame 11, the voice coil 45 is coupled to the center portion. The voice coil 45 is fixed to the diaphragm 41 on the upper side thereof, and on the lower side of the bobbin 45a and bobbin 45a positioned in the gap G1 between the pole 31b of the yoke 31 and the plate 35. It has the coil 45b wound on the outer peripheral surface.

Thus, when a current of a predetermined frequency or less is supplied to the coil 45b, the vibration generating unit 30 vibrates up and down by the action of the vibration generating unit 30 and the voice coil 45, and the vibration generating unit 30 The vibration of the is transmitted to the frame 11 through the spring (20). Then, the vibration of the frame 11 is transmitted to a product such as a mobile communication device in which the frame 11 is installed to generate a vibration signal.

Then, when a current of a predetermined frequency or more is supplied to the coil 45b, the vibrating plate 41 is vibrated while the voice coil 45 vibrates up and down by the action of the vibration generating unit 30 and the voice coil 45. Then, an acoustic signal is generated by the vibration of the diaphragm 41.

In the conventional multifunctional speaker as described above, the outer circumferential portion 21 of the spring 20 is coupled to the side of the frame 11 perpendicular to the vibration direction of the vibration generator 30. Therefore, the vertical vibration of the vibration generator 30 is transmitted to the side of the frame 11 perpendicular to the vibration direction to vibrate the frame 11 up and down. Therefore, the vibration transmission path of the vibration generator 30 has a disadvantage that the vibration force is further reduced.

In addition, the inner circumferential portion 23 of the spring 20 is located outside the pawl 31b in a form surrounding the pawl 31b. Therefore, the inner diameter of the inner circumferential portion 23 of the spring 20 should be formed longer than the outer diameter of the pole 31b. That is, since the outer diameter of the inner circumferential portion 23 of the spring 20 cannot be formed shorter than the outer diameter of the pole 31b, the radial distance between the outer circumferential portion 21 and the inner circumferential portion 23 of the spring 20 is relatively small. narrow. Thus, since the length of the spokes 25 of the spring 20 is shortened, there is a disadvantage that the vibration frequency increases, thereby further reducing the vibration force.

In addition, since only one magnet 33 can be used in the set space, the vibration force is further reduced, and a relatively small sound signal is generated.

The present invention has been made to solve the problems of the prior art as described above, an object of the present invention to provide a multifunctional speaker that can obtain a large vibration force.

Another object of the present invention is to provide a multifunctional speaker capable of obtaining a large acoustic signal.

Multifunctional speaker according to the present invention for achieving the above object, the frame; First and second covers coupled to one end side and the other end side of the frame, respectively; A vibration generator positioned inside the frame to generate vibration; Coupling piece coupled to the first cover, is formed in a spiral form extending from one end of the coupling piece surrounding the coupling piece, one side of the central portion is coupled to the vibration generating portion and the outer end side is coupled to the first cover First spoke (Spoke), extending from the other end of the coupling piece is formed in a spiral shape surrounding the coupling piece, one side of the central portion is coupled to the vibration generating portion and the second end side is coupled to the first cover (Spoke), wherein the first spoke and the second spoke is wound around the coupling pieces in mutually opposite directions alternately with the spring; It is coupled to the other end surface side of the frame and disposed in the form covering the vibration generating portion, and acts with the vibration generating portion to generate sound while vibrating from one surface side and the other surface side from one surface side of the frame, or the vibration generation A sound generating unit for vibrating the unit.

Hereinafter, a multifunctional speaker according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 is a perspective view of a multifunctional speaker according to an embodiment of the present invention, FIG. 3 is a sectional view taken along the line “A-A” of FIG. 2, and FIG. 4 is a perspective view of the spring shown in FIG. 3.

As shown, a frame 110 is provided. At this time, the frame 110 may be formed in a circular, elliptical or square.

Hereinafter, in referring to the surface and the direction of the other components including the frame 110, the surface and the direction toward the open one surface of the frame 110, respectively "lower and lower", the surface and the direction toward the other open surface. Respectively referred to as "top and top".

The first and second covers 121 and 125 are coupled to the lower side and the upper side of the frame 110, and the vibration is generated by vibrating up and down inside the frame 110. The unit 130 is coupled. Then, a spring 140 is installed between the first cover 121 and the vibration generating unit 130, and the sound is generated between the second cover 121 and the vibration generating unit 130 to generate a sound while vibrating up and down The unit 150 is installed.

The spring 140, the vibration generating unit 130, and the sound generating unit 150 will be described in detail.

The spring 140 has a coupling piece 141, a first spoke 143, and a second spoke 145.

Coupling piece 141 is formed in a plate shape is coupled to the first cover 121. The first spoke 143 extends from one end of the coupling piece 141 and is formed in a spiral shape surrounding the coupling piece 141. The second spoke 145 is formed in a spiral form extending from the other end of the coupling piece 141 to surround the coupling piece 141.

The first spokes 143 and the second spokes 145 are wound in opposite directions with respect to the coupling piece 141, and are disposed while being alternated with each other. In addition, one side of the central portion of the first and second spokes 143 and 455 is coupled to the vibration generating unit 130, and the outer end side thereof is coupled to the first cover 121, respectively.

At this time, the central portion of the first spoke 143 and the central portion of the second spoke 145 coupled to the vibration generating unit 130 are located on the same virtual extension line passing through the center of the coupling piece 141, The outer end of the first spoke 143 and the outer end of the second spoke 145 are located on the same virtual extension line passing through the center of the engaging piece 141. This is for the vibration generating unit 130 coupled to the spring 140 to be stably installed while maintaining the horizontal.

In addition, from the portion of the first spoke 143 connected to the coupling piece 141 to the central portion of the first spoke 143 coupled to the vibration generating unit 130, the upper portion of the first spoke 143 is gradually closer to the vibration generating unit 130. It is formed to be inclined, and gradually away from the vibration generating unit 130 from the central portion of the first spoke 143 coupled to the vibration generating unit 130 to the outer end of the first spoke 143 coupled to the first cover 121. It is formed inclined downward in the form.

In addition, from the portion of the second spoke 145 connected to the coupling piece 141 to the central portion of the second spoke 145 coupled to the vibration generating unit 130 is gradually upward in the form of getting closer to the vibration generating unit 130. It is formed to be inclined, and gradually away from the vibration generating unit 130 from the central portion of the second spoke 145 coupled to the vibration generating unit 130 to the outer end of the second spoke 145 coupled to the first cover 121. It is formed inclined downward in the form.

That is, the first spoke 143 and the second spoke 145 is " Is formed into a shape.

In addition, the shape of the spring 140 is formed in a circular, oval or square shape around the coupling piece 141 to correspond to the shape of the frame 110.

The vibration generating unit 130 has a yoke 131, an outer magnet 133, a plate 135, an inner magnet 137, and a pole piece 139.

The yoke 131 is formed in a disk shape and is coupled to the central portions of the first and second spokes 143 and 145.

The outer magnet 133 and the plate 135 are each formed in a ring shape, and are sequentially laminated to the edge portion side of the yoke 131. In addition, the inner magnet 137 and the pole piece 139 are formed in a disc shape and are sequentially stacked and bonded to the center side of the yoke 131. At this time, a gap G2 is formed between the inner circumferential surface of the outer magnet 133 and the outer circumferential surface of the inner magnet 137 and between the inner circumferential surface of the plate 135 and the outer circumferential surface of the pole piece 139, respectively.

The sound generator 150 has a diaphragm 151 and a voice coil 153.

The diaphragm 151 is coupled to the upper end side of the frame 110 at the edge portion side. The voice coil 153 is coupled to the center of the diaphragm 151, the upper end side of the bobbin 153a and the coil wound around the outer peripheral surface of the bobbin 153a located in the gap G2 of the vibration generating unit 130 ( 153b).

Thus, when a current below a predetermined frequency is supplied to the coil 153b, the vibration generating unit 130 vibrates up and down by the action of the vibration generating unit 130 and the coil 153b. Then, the up and down vibration of the vibration generating unit 130 is transmitted to the lower surface of the frame 110 through the spring 140 to vibrate the frame 110, whereby a product such as a mobile communication device installed frame 110 is Vibrate. This generates a vibration signal.

When a current having a predetermined frequency or more is supplied to the coil 153b, the voice coil 153 vibrates up and down by the action of the vibration generating unit 130 and the coil 153b, thereby causing the diaphragm 151 to move up and down. Vibrate. Then, an acoustic signal is generated by the vibration of the diaphragm 151.

In the multifunction speaker according to the present embodiment, the center and the outer end side of the spring 140 are coupled to the first cover 121 parallel to the vibration direction of the vibration generating unit 130. Therefore, since the vibration of the vibration generating unit 130 is transmitted to the frame 110 through the spring 140 as it is in the vibration direction, the vibration transmission path of the vibration generating unit 130 is shortened to improve the vibration force.

In the multifunction speaker according to the present exemplary embodiment, since the first and second spokes 143 and 145 of the spring 140 are formed in a spherical shape, their length is long. If the lengths of the first and second spokes 143 and 145 are long, the vibration frequency is reduced, so that the distinction between the sound signal and the vibration signal generation region is certain.

In the multifunction speaker according to the present exemplary embodiment, two magnets generating magnetic force are provided as the outer magnet 133 and the inner magnet 137. Therefore, a strong magnetic force is generated, the vibration force is further increased, and a large acoustic signal is generated.

When the vibration generating unit 130 vibrates upwards or more, the vibration generating unit 130 may hit the diaphragm 151 and the diaphragm 151 may be damaged or the spring 140 may be deformed. In order to prevent this, the engaging projections 135a and 113 which are in contact with each other are formed on the outer circumferential surface of the plate 135 and the inner circumferential surface of the frame 110, respectively. That is, when the vibration generating unit 130 vibrates upward, the upper surface of the locking protrusion 135a of the plate 135 is caught on the lower surface of the locking protrusion 113 of the frame 110, so that the vibration generating unit 130 is upward. It cannot vibrate more than a predetermined time. In this case, the shock absorbing member 160 may be installed on the upper surface of the locking protrusion 135a of the plate 135 or the lower surface of the locking protrusion 113 of the frame 110.

The first and second covers 121 and 125 are sealed to prevent the space formed by the first cover 121 and the diaphragm 151 and the space formed by the second cover 125 and the diaphragm 151 from being sealed. Through-holes 122 and 126 are formed to allow the generator 150 and the vibration generator 130 to vibrate smoothly.

As described above, the multifunctional speaker according to the present invention is connected to the spring portion of the frame parallel to the vibration direction of the vibration generating unit receives the vibration force of the vibration generating unit in the shortest distance. Therefore, since the vibration transmission path of the vibration generating unit is shortened, the vibration force is improved.

In addition, since each spoke of the spring is formed in a spiral shape, the length is long. Therefore, the vibration force increases, the vibration frequency decreases, and the distinction between the sound signal and the vibration signal generation region is assured.

In addition, since two magnets are provided, the magnetic force is strong. Therefore, not only a larger vibration force can be obtained but also a large sound can be obtained.

In the above, the present invention has been described in accordance with one embodiment of the present invention, but those skilled in the art to which the present invention pertains have been changed and modified without departing from the spirit of the present invention. Of course.

1A is a cross-sectional view of a conventional multifunction speaker.

1B is a perspective view of the spring shown in FIG. 1A.

2 is a perspective view of a multifunctional speaker according to an embodiment of the present invention;

3 is a cross-sectional view taken along the line “A-A” of FIG. 2.

4 is a perspective view of the spring shown in FIG. 3.

Explanation of symbols on the main parts of the drawings

110: frame 121,125: first 1,2 cover

130: vibration generating unit 140: spring

150: sound generating unit 160: buffer member

Claims (6)

frame; First and second covers coupled to one end side and the other end side of the frame, respectively; A vibration generator positioned inside the frame to generate vibration; Coupling piece coupled to the first cover, is formed in a spiral form extending from one end of the coupling piece surrounding the coupling piece, one side of the central portion is coupled to the vibration generating portion and the outer end side is coupled to the first cover First spoke (Spoke), extending from the other end of the coupling piece is formed in a spiral shape surrounding the coupling piece, one side of the central portion is coupled to the vibration generating portion and the second end side is coupled to the first cover (Spoke), wherein the first spoke and the second spoke is wound around the coupling pieces in mutually opposite directions alternately with the spring; It is coupled to the other end surface side of the frame and disposed in the form covering the vibration generating portion, and acts with the vibration generating portion to generate sound while vibrating from one surface side and the other surface side from one surface side of the frame, or the vibration generation Multifunctional speaker including a sound generating unit for vibrating parts. The method of claim 1, The central portions of the first and second spokes respectively coupled to the vibration generating portions at the portions of the first and second spokes respectively connected to the coupling pieces are formed in the form of becoming closer to the vibration generating portions, respectively. From the central portion of the first and second spokes respectively coupled to the vibration generating portion to the outer ends of the first and second spokes respectively coupled to the first cover are formed in a form far away from the vibration generating portion, The central portion of the first spoke and the central portion of the second spoke, respectively coupled to the vibration generating portion, are located on the same virtual extension line passing through the center of the coupling piece, and the outer end of the first spoke and the second portion of the second spoke. The outer end of the spoke is a multi-function speaker located on the same virtual extension line passing through the center of the coupling piece. The method of claim 1, The vibration generating unit is sequentially laminated to the disk-shaped yoke coupled to the central portions of the first and second spokes, the ring-shaped outer magnet and plate coupled to the edge portion side of the yoke, and the center portion of the yoke. Coupled to have a disc-shaped inner magnet and pole piece each having a gap with the outer magnet and plate, The sound generating unit is located in the diaphragm coupled to the other end surface side of the frame and one side of the gap between the plate and the pole piece and the gap between the outer magnet and the inner magnet and the other side of the center portion of the diaphragm Multifunctional speaker with voice coil coupled to. The method of claim 1, Each of the frame and the vibration generating part is formed with a catching protrusion to prevent the vibration generating part from vibrating more than a predetermined side to the other end surface side of the frame, respectively. A multifunctional speaker having a buffer member interposed between the engaging projection of the frame and the engaging projection of the vibration generating unit. The method of claim 1, The first and second cover is a multi-function speaker formed with a through hole. The method according to any one of claims 1 to 5, The frame is formed in any one shape selected from a circle, oval or square, wherein the spring is formed in a shape corresponding to the frame around the coupling piece.