Hereinafter, the present invention will be described in detail with reference to the drawings. In the present invention, the vibration generating apparatus and the bodily sensation vibration acoustic receiver shown in the drawings will be described as an example, but the present invention is not limited to the vibration generating apparatus and the bodily sensation vibration acoustic receiver shown in the drawings.
1 shows a vibration generating apparatus 10 according to an embodiment of the present invention. Fig. 2 is an exploded perspective view showing the components of the vibration generator 10 of Fig. 1 separated from each other.
Referring to the drawings, the vibration generating device 10 includes a fixing part 100; A vibration unit 200; And a power connection unit 400. The vibration generating apparatus 10 may include a stationary magnet 120 in the stationary section 100 and may include a moving coil 210 and a weight member 220 in the vibrating section 200. The power connection unit 400 is installed between the weight member 220 and the case 110 so that the power connection unit 400 can be electrically connected.
The stationary magnet 120 is fixed to the first surface inside the case 110 and can generate a magnetic force. The moving coil 210 is spaced apart from the stationary magnet 120 and interacts with the stationary magnet 120 to generate an electromagnetic force to move relative to the stationary magnet 120. The weight member 220 may be formed by coupling a heavy object to the moving coil 210 in a direction opposite to a direction toward the first surface of the case 110.
In this case, by fixing the stationary magnet 120 to the case 110 and causing the stationary magnet 120 to move with respect to the stationary magnet 120, bodily sensation and vibration can be realized by the coil oscillation structure, have. In addition, the weight member 220 vibrates together with the moving coil 210 at the time of occurrence of vibration, so that it is possible to provide sufficient vibration force at the time of vibration. Further, by disposing the weight member 220 below the kinematic coil 210, the diameter of the device can be reduced so that it can be downsized.
The stationary magnet 120 is fixed inside the case 110 and can generate a magnetic force. At this time, the stationary magnet 120 may be a permanent magnet. The moving coil 210 interacts with the stationary magnet 120 to generate an electromagnetic force to move relative to the stationary magnet. At this time, a current flows through the coil according to the input signal to cause the vibration unit 200 to move relative to the stationary unit 100 by the electromagnetic force generated between the stationary magnet 120 and the moving coil 210.
At this time, much less amount of electromagnetic waves can be generated in the moving coil 210 than in the electromagnetic waves generated in the fixed magnet 120. Therefore, the vibration generating apparatus 10 generates a vibration as a coil vibration structure that fixes the magnet and vibrates the coil, thereby generating a small amount of electromagnetic waves, and the harmful influence on the human body is reduced.
Meanwhile, the stationary magnet 120 and the moving coil 210 may be housed inside the case 110, and the case may include a ferromagnetic body. Therefore, the case 110 can function as a magnetic shield member, thereby blocking electromagnetic waves that may be generated from the stationary magnet 120 and / or the moving coil 210. [
The stationary magnet 120 may have a double magnet structure extending sideways. For this purpose, the stationary magnet 120 may include a first magnet 121 and a second magnet 122 that surrounds the first magnet 121 at a distance from the first magnet 121. At this time, the stationary magnet 120 may have a structure for maximizing the magnetic force with the moving coil 210.
The first magnet 121 may have a circular cylindrical shape that is symmetrical about the central axis. The second magnet 122 may have a cylindrical shape with an empty central portion which is symmetrical about the central axis. At this time, the first magnet 121 may be disposed in the hollow portion of the hollow central axis portion of the second magnet 122. Accordingly, the first magnet 121 and the second magnet 122 may be disposed at a predetermined interval, for example, a predetermined distance apart in the first direction, that is, the radial direction. Such a double magnet structure can provide a strong magnetic force, so that space can be saved, and a strong force can be obtained even in fine driving.
At least a part of the moving coil 210 is moved in the second direction (the center axis direction) perpendicular to the first direction (the radial direction) with respect to the fixed magnet 120 between the first magnet 121 and the second magnet 122 ). To this end, an end of the moving coil 210 is inserted in the space between the first magnet 121 and the second magnet 122. At this time, since the moving coil 210 moves in the space between the first magnet 121 and the second magnet 122 at the time of vibrating, space can be saved while obtaining a strong force by receiving sufficient magnetic force.
The vibration unit 200 may include a weight member 220 to which the weight is coupled to the motion coil 210 in the direction of motion of the motion coil 210. The weight member 220 vibrates together with the moving coil 210 when the vibration is generated, so that it is possible to provide a sufficient vibration force at the time of vibration. At this time, the weight member 220 is coupled with the moving coil 220 in a direction in which the moving coil 210 moves. Accordingly, since the thickness of the vibration generator 10 can be reduced by the vertical arrangement of the weight member 220, the installation space can be saved, thereby realizing miniaturization.
The power supplied from the outside through the external terminal 500 can be connected to the moving coil 210 through the power connecting part 400. At this time, the first terminal 410 of the power connection unit 400 is attached to the lower surface of the weight member 220, that is, the opposite surface of the upper surface on which the moving coil 210 is installed, The moving coil 410 and the moving coil 210 may be electrically connected. At this time, a coil of the additional coil or the moving coil 210 may be extended and the end of the connecting wire 211 may be attached to the first terminal 410.
The coupling part 440 at one end of the power connection part 400 is attached to the lower surface of the weight member 220 and the coupling part 440 is connected to the first terminal 410 by extending to the connection line guiding part 230 side. . At this time, the power connection unit 400 may be coupled to the center of the lower surface of the weight member 220 so as to be centered on the lower surface of the weight member 220.
In this case, it is possible to electrically connect the moving coil 210 and the power connection unit 400 by supporting the connection member to the weight member 220 without a separate circuit board. Therefore, the vibration generator 10 can be realized by a simple structure.
At this time, the weight member 220 may be provided with a connection line guide unit 230, which is a place where the connection line 211 for supplying power to the moving coil 210 can be received. The connection line may be supported and / or attached along the surface of the weight member 220. The connection member 230 may be supported by the weight member 220 to stably support the connection line 211, for example, A groove can be provided.
The connecting line guide portion 230 may include an upper surface guide portion 231, a side guide portion 232, and a lower surface guide portion 232. The upper surface guide portion 231 may include a groove provided on the upper surface of the weight member 220 from one side edge to the moving coil 210. The side guide portion 232 may include a groove provided along the side surface of the weight member 220. The lower surface guide portion 233 may include a groove provided on the lower surface of the first terminal 410 from the edge on one side. At this time, the upper surface guide portion 231, the side surface guide portion 232, and the lower surface guide portion 233 are connected to each other so that the connection line 211 extends from the moving coil 210 to the first terminal 410 .
As shown in FIG. 1, the lower terminal guide 233 may be omitted, or a groove may be formed in which the first terminal 410 is attached to the first terminal 410, Can be attached or fixed. In this case, the connection line 211 may be connected to the first terminal 410 from the moving coil 210 through the upper surface guide portion 231 and the side guide portion 232.
As another embodiment, at least a part of the connection line guide portion 230 provided with a connection line may be covered by a separate cover or tape. In this case, the connection line 211 can be protected from external influences.
In addition, two connection lines may be provided to the connection line guide unit 230, and grooves may be separately provided for at least a part of the connection line guide unit 230. In this case, the connecting lines 211 can be separated from each other and the connecting line 211 can be protected from external influences.
Alternatively, a separate circuit board (not shown) may be provided between the weight member 220 and the moving coil 210 as another embodiment. In this case, the vibration unit 200 includes a circuit board, the moving coil 210 is mounted on one surface of the circuit board facing the fixed magnet 120, and the weight member 220 is mounted on the other surface . Therefore, it is possible to efficiently utilize a small space, thereby realizing miniaturization.
Further, the weight member may have a symmetrical shape with respect to a central axis having a hollow portion with respect to a central axis passing through the center of the circuit board in the thickness direction of the vibration generator in one direction. It is possible to stably oscillate by the axially symmetric shape of the weight member. At this time, the power connection portion and / or the elastic member may be interposed in the hollow space of the weight member.
At this time, the weight member 220 may be made of a nonmagnetic metal or may be electrically insulated from the moving coil 210. Accordingly, the weight member 220 does not receive a magnet, power is not supplied, and electromagnetic waves may not be generated even when the weight member 220 moves.
In addition, the weight member 220 may be adjusted to have a natural frequency at which resonance may occur due to the vibration. Accordingly, a large vibration can be obtained with respect to the applied input, and the efficiency of the vibration generating apparatus 10 can be improved. As another embodiment, the vibration generator 10 may further include a separate frequency adjustment member (not shown). The frequency adjustment member may be a vibrating portion or an additional weight installed on the weight member 220 so as to adjust the natural frequency of the vibration member or weight member 220. [
On the other hand, the stopper 240 is provided on the surface of the weight member 220 facing the fixed magnet 120, so that the range of motion of the weight member 220 can be limited. The stopper 240 may be made of a resilient material so that energy can be dissipated when the weight member 220 and the stationary magnet 120 are brought into contact with each other, so that the oscillation can be smoothly performed. At this time, the stopper 240 may function as an elastic body or a damper.
Alternatively, a separate circuit board (not shown) may be provided between the weight member 220 and the moving coil 210 as another embodiment. In this case, the stopper 240 is provided on the surface of the circuit board facing the stationary magnet 120, so that the range of motion of the circuit board can be limited. In addition, the stopper 240 is made of an elastic material, so that when the circuit board and the fixed magnet 120 are in contact with each other, the energy is dissipated so as to produce a smooth vibration motion. At this time, the stopper 240 may function as an elastic body or a damper.
3A and 3B are views showing a state in which the elastic member 300 and the power connection unit 400 are installed in the weight member 220 in the vibration generator 10 of FIG. 1, and FIGS. 4A and 4B, respectively, The vibration generating device 10 shown in FIG. 1 has a configuration in which the moving coil 210 is installed in the weight member 220 and a configuration in which the power connecting portion 400 is installed in the weight member 220.
The vibration generating apparatus 10 may include a power connection unit 400 provided between the fixing unit 100 and the weight member 220 and electrically connected thereto and having a helical coil structure. The power connection part 400 has a helical coil structure and is disposed on the opposite side of the face of the weight member 220 facing the fixed magnet 120 so as not to come into contact with the fixed magnet 120 during vibration of the vibration part 200, It is possible to maximize the length so as not to interfere with the vibration of the vibration unit 200. In addition, the power connection unit 400 may include a flexible circuit board that can be flexibly moved.
At this time, the power connection unit 400 may be installed between the opposite side of the surface on which the moving coil 210 of the weight member 220 is installed and the second side facing the first side of the case 110. Therefore, it is possible to secure a space for connecting the power connection unit 400 with the external terminal 500 and to secure a space where the power connection unit 400 can be elastically or inelastically deformed according to the movement of the weight member 220 do.
The power connection unit 400 may include a first terminal 410, a second terminal 420, and a connection unit 430. The first terminal 410 may be coupled to a coil coupled to the weight member 220 and extending from the kinematic coil 210. The second terminal 420 is coupled to the case 110 and can receive power from the outside. The connection part 430 may electrically connect the first terminal 410 and the second terminal 420.
At this time, the connecting portion 430 is made of a material that can be elastically or inelastically deformed according to the motion of the weight member 220, so that the kinetic energy of the weight member 220 can be damped or stored. The first terminal 410 and the second terminal 420 are spaced apart from each other in the direction of movement of the weight member 220 to secure a space in which the power connection unit 400 can move, It can have an efficient structure capable of absorbing or storing kinetic energy.
At this time, the power connection unit 400 can apply the power input through the external terminal 500 to the moving coil 210 while also performing the function of the elastic member 300. In this case, the movement of the weight member 220 can be transmitted to the outside through the case 110 without a separate elastic member 300.
The elastic member 300 may be provided between the fixed portion 100 and the vibration portion 200 to provide an elastic force between the fixed portion 100 and the vibration portion 200. At this time, the vibration of the elastic member 300 can be transmitted to the outside by using the elasticity of the member, but the vibration width can be limited within the fixing portion 100.
The elastic member 300 may be installed between the case 110 and the weight member 220 such that the elastic member 300 receives elasticity from the second surface facing the first surface of the inner surface of the weight member 220. Therefore, it is possible to sufficiently secure the movement space of the weight member 220 between the case 110 and the weight member 220, so that the elastic member 300 can have sufficient elasticity. Accordingly, the movement of the weight member 220 can be transmitted to the outside through the case 110.
The elastic member 300 may be installed between the weight member 220 and the other surface of the case 110. The elastic member 300 includes at least one elastic part 330, which is an elastic body such as a leaf spring, which can transmit the vibration to the outside while using the elasticity of the metal and can limit the vibration width within the fixing part 100, (310, 320) coupled to the fixing part (200) or the fixing part (100).
The distance between the weight member 220 in the state where power is not applied to the moving coil 210 and the second surface facing the first surface of the case 110 is larger than the distance between the second surface of the weight member 220 The height of the elastic member 300 at the time of the maximum displacement in the direction facing the elastic member 300 can be made larger. Accordingly, a sufficient space for moving the weight member 220 between the case 110 and the weight member 220 can be secured, so that the elastic member 300 can have sufficient elasticity. Accordingly, the movement of the weight member 220 can be transmitted to the outside through the case 110.
The elastic member 300 may include a first engaging portion 310, a second engaging portion 320, and an elastic portion 330. The first coupling portion 310 may be coupled to the weight member 220. The second coupling portion 320 may be coupled to the case 110. The elastic part 330 may connect the first and second coupling parts 310 and 320 to provide an elastic force. The elastic part 330 includes an elastic body to store the kinetic energy of the vibration part 200.
The first coupling portion 310 may have a predetermined width to be coupled to the weight member 220 and the second coupling portion 320 may have a predetermined width to be coupled to the case 110. The first and second engaging parts 310 and 320 are spaced apart from each other in the direction of movement of the weight member 220 so that the distance between the case member 110 and the weight member 220 It is possible to sufficiently secure the movement space so that the elastic member 300 has sufficient elasticity. Accordingly, the movement of the weight member 220 can be transmitted to the outside through the case 110.
At this time, the elastic member 300 may be directly attached to the vibration unit 200 and the fixing unit 100, or may be indirectly attached using another insertion member 600 (see FIGS. 5A and 5B) It is possible. It is important that the elastic member 300 has elasticity not to interfere with the vibration, so that eccentricity does not occur. Therefore, the number and shape of the elastic part that receives elasticity in the elastic member 300 can be adjusted according to the size of the elastic member 300, the weight of the vibration part 200, and the vibration power. Various implementations It is possible.
The elastic member 300 may be bonded to the fixed portion 100 or the vibration portion 200 by bonding or welding. When the fixing portion 100 or the vibrating portion 200 is made of a material difficult to weld and the area of the coupling portions 310 and 320 provided on the elastic member 300 is not sufficient, The insertion member 600 is coupled to the fixing portion 100 or the vibrating portion 200 and the elastic member 300 is inserted into the insertion member 600 It is possible to increase the bonding strength by welding. In addition, the durability of the vibration generator 10 can be increased.
The elastic portion of the elastic member 300 may be embodied in various shapes to provide elasticity, such as a straight shape, a triangular shape, a cross shape, a wavy shape, a torsion spring shape, or a whirl shape. Wherein at least one elastic part formed so as to provide a required elasticity regardless of the shape of the elastic member 300 including the elastic part is formed such that one side of the coupling part is centered on the vibration part 200 and the other side is eccentric It is possible to faithfully perform generation and transmission of vibration by being coupled to the fixing part 100 so as not to occur. Here, the center coupling means a coupling at a position where the center is held and eccentricity does not occur.
Meanwhile, the elastic member 300 may be installed at various positions between the fixed portion 100 and the vibration portion 200. For example, if a separate circuit board is provided, it may be installed between one side or the other side of the circuit board and the case 110, or between the circuit board and the fixed magnet 120. In another embodiment, And the case 110, as shown in FIG.
The fixing part 100 is basically a side-covered structure that fixes the internal components and protects the product from external impacts. The vibrating part 100 vibrates upward or downward, ) To disperse evenly throughout and to transmit all vibrations including fine vibration to the outside.
The stationary part 100 is made of a ferromagnetic material such as pure iron to prevent leakage of magnetic force generated from the stationary magnet 120 coupled to the inside of the stationary part 100, It is possible to increase the magnetic force. When the yoke 130 made of a ferromagnetic metal such as pure iron is coupled to the opposite side of the fixed side of the stationary magnet 120 to the fixed side 100, It is possible to maximize the magnetic force of the fixed magnet 120 by configuring the magnetic circuit more effectively.
A yoke 130 is disposed on the inner surface of the case 110 where the stationary magnet 120 is installed so that the stationary magnet 120 can be attached or fixed to the inner surface of the case 110 through the yoke 130 . It is possible to maximize the magnetic force of the fixed magnet 120 by preventing leakage of the magnetic force to the upper surface side of the fixed magnet 120 and configuring the magnetic circuit more effectively. At this time, the yoke 130 provided between the stationary magnet 120 and the case 110 is formed of one member and can cover the entire area occupied by both the first magnet 121 and the second magnet 122 .
The fixing part 100 is a part capable of realizing various shapes such as a quadrangular prism shape and a cylindrical shape depending on the design of the object to be applied. The shape of the fixing part 100 affects the shape of the internal component, Depending on the shape of the housing 100, the internal components may also be implemented in a similar shape with different scales.
In the embodiment shown in the drawing, the cylindrical fixing portion 100 is adopted, and the inner components also have a circular shape as a basic shape. However, the present invention is not limited to this, and the shape of the housing and internal components may have various shapes.
Considering the manufacturing process, the fixing part 100 may include a case body 111, which is partially opened, and a bracket 112, which is coupled to the open side of the case body 111, And the case body 111 and the bracket 112 may be assembled after the internal components are assembled to the case body 111 or the bracket 112. [ At this time, when the thickness of the entire speaker is to be further reduced, the bracket 112 may be omitted.
A part of the fixing part 100 may be formed of a circuit board or a circuit pattern may be formed on a part of the circuit board so that the power connection part 400 may be connected. In this case, since the power connection unit 400 includes a flexible circuit board and includes a portion having elasticity, even when power is supplied to the moving coil 210 without breaking even when the vibration unit 200 vibrates, As shown in FIG.
Hereinafter, the present invention is not limited thereto, although a cylindrical shape and a shape suitable for the cylindrical fixed portion 100 are inevitably referred to in describing the internal components when the fixed portion 100 covering the entire surface is adopted .
When the vibration generating apparatus 10 generates the vibration force by the acoustic signal received from the sound reproducing apparatus, it may be necessary that a strong magnetic force is formed so that the vibration generating apparatus 10 can operate also on a minute signal. To this end, another permanent magnet 130 that surrounds the inner permanent magnet 130 at a certain interval may be disposed, thereby forming a plurality of permanent magnets 130 to increase the magnetic force.
A moving coil 210 is provided as a space formed between the inner and outer permanent magnets 130 to generate an electromagnetic force by interaction with the driving magnet 130 so that the moving coil 210 vibrates upward or downward . This is because when a permanent magnet and a permanent magnet are brought close to each other, a very strong magnetic field is formed, and a coil is disposed therebetween to generate a powerful vibration force. The weight member 220 is integrally coupled to the lower portion of the moving coil 210 so that the weight member 220 vibrates together with the movement of the moving coil 210. [ At this time, the moving coil 210 is electrically connected to the power connection unit 400 and receives an external power source to generate an electromagnetic force.
Meanwhile, as another embodiment, the elastic member 300 may be a passage for applying a power or a signal to the moving coil 210. [ To this end, a power connection path such as a circuit pattern or a coil may be formed on the elastic member 300 including the elastic part 330.
In this case, a separate power connection for applying power or signal to the moving coil 210 may not be necessary. Therefore, the structure of the vibration generator 10 can be simplified, and miniaturization can be realized. In this case, a circuit is connected to the case 110, a circuit pattern is formed on the weight member 220, and power from the case 110 to the moving coil 210 through the elastic member 300 and the weight member 220 Supply can be made possible.
In addition, even when the power connection unit 400 is provided, the elastic member 300 may be further provided. The elastic member 300 may transmit the vibration to the outside by using the elasticity of the member, It is possible to perform a function of limiting the vibration width.
The power connection part 400 has one end connected to the circuit board 230 through the hollow part of the weight member 220 and the hollow part of the elastic member 300 in the embodiment in which the separate circuit board is provided and the hollow part is provided in the weight member. And the other end can engage with the other side of the case.
The moving coil 210 and the weight member 220 may be electrically insulated from each other to prevent the power supplied to the moving coil 210 from leaking to the outside through the weight member 220 and the elastic member 300. The motion coil 210 is fixed to the circuit board for connection between the motion coil 210 and the power connection unit 400 and for insulation between the motion coil 210 and the weight member 220 and the weight member 220 is coupled . The moving coil 210 and the circuit board may be electrically connected to each other and the circuit board and the power connection unit 400 may be connected to supply power to the moving coil 210. [ The circuit board can be composed of a printed circuit board or a flexible circuit board.
Alternatively, the moving coil 210 and the weight member 220 may be insulated from each other using a non-conductive material such as a bond, a resin or a film, and the moving coil 210 and the power connection unit 400 may be directly connected. At this time, if the moving coil 210 and the weight member 220 are electrically insulated from each other, various configurations are possible.
The weight member 220 may be made of a non-magnetic material so that the weight member 220 can vibrate without being affected by the magnetic force generated by the permanent magnet 130. The weight member 220 may be made of a metal having a large specific gravity such as brass or stainless steel or tungsten so as to increase the weight even in the same volume in order to maximize the vibration power.
Meanwhile, the vibration generator 10 may include a magnetic fluid (not shown) disposed on the outer circumferential surface of the stationary magnet 120. In order to dispose the magnetic fluid around the stationary magnet 120, at least one inlet hole (not shown) may be formed near the stationary magnet of the case body 111, and the magnetic fluid may flow through the inlet hole to the stationary magnet 120 ). The inlet hole may be formed at a position where a gap between the first magnet 121 and the second magnet 122 of the stationary magnet 120 of the case 110 is present.
A magnetic fluid can be applied between the outer circumferential surface of the fixed magnet 120 and the yoke 130 and the moving coil 210 and the magnetic fluid can prevent the vibration of the vibrating portion 200. [ The magnetic fluid may be disposed in a gap between the fixed magnet 120 and the moving coil 210 so that the vibrating part 200 can move up and down smoothly. It is possible to prevent the residual vibration caused by the upward / downward movement or the left / right movement.
The vibration generating apparatus 10 may include a high frequency cutoff unit electrically connected to the motion coil 210 to cut off a vibration output of a frequency higher than a set reference frequency. At this time, the high-frequency blocking portion can be installed in the fixing portion 100. At this time, the high frequency cutoff unit can cut off the power supplied through the fixing unit 100 at the time of high frequency output, thereby preventing high frequency coupling that may occur in the vibration generator 10 at the time of high frequency output.
The high-frequency blocking unit can realize a high-quality bodily-sensible vibration acoustic receiver that generates sufficient sounding both in the low-frequency band and the high-frequency band while preventing the high-frequency sounding in the high-frequency band from occurring. The high-frequency blocking portion may include a low-pass filter using an inductor.
5A and 5B show embodiments in which the insertion member is mounted on the vibration generating device.
The vibration generating apparatus 10 includes an insertion member 600 inserted between the elastic member 300 and the fixing portion 100 or between the elastic member 300 and the vibration portion 200 so as to facilitate mutual welding ). The insertion member 600 may be inserted between one side of the elastic member 300 and the case 110 or between the elastic member 300 and the weight member 220 to facilitate welding.
The elastic member 300 may be bonded or welded to the fixed portion 100 and / or the motion portion 200. When the fixing portion 100 or the moving part 200 is made of a material difficult to weld and the bonding portion of the elastic member 300 is small in area so that the bonding strength can not be sufficiently realized by bonding, 600 may be provided to connect the elastic member 300 to the fixed portion 100 or the motion portion 200 and to weld the elastic member 300 to the insertion member 600 to increase the coupling strength. The incision part is formed in a part of the insertion member 600 and the power connection part 400 can be inserted or inserted into a part of the incision part of the insertion member 600 and combined with the fixing part 100. [
5B, the insertion member 500 is provided on the lower side of the elastic member 300. When the elastic member 300 has a small coupling area and is difficult to be directly coupled to the fixing portion 100, The elastic member 300 and the insertion member 600 are welded to each other to be strongly engaged with each other by bonding the elastic member 600 with the fixing member 100 by bonding or the like, have.
5A, the insertion member 600 is provided on the upper surface of the elastic member 300. When the coupling area of the elastic member 300 is small and it is difficult to directly couple the vibration member 300 to the vibration member 200, The elastic member 300 and the insertion member 600 may be welded to each other by joining the vibration plate 600 with the vibration unit 200 by bonding or the like.
5A and 5B, a portion of the insertion member 600 may be cut so that a part of the cutout portion of the insertion member 600 is inserted or inserted into the power connection portion (not shown) 400 can be coupled with the fixing portion 100.
The insertion member 600 is partially opened without being wrapped by the fixing part 100 so that the power connection part 400 is inserted into the insertion part 600 or the fixing part 100 And the power connection unit 400 may be directly connected to the external power source.
6 shows the magnetized state of the fixed magnet 120 in the vibration generating apparatus 10. As shown in Fig. Referring to the drawings, the stationary magnet 120 may be magnetized in the same direction as the direction of motion of the vibration unit 200. At this time, the second magnet 122 may be disposed so as to be opposite in polarity to the moving direction of the moving coil 210 with respect to the first magnet 121.
That is, when a plurality of stationary magnets 120 are formed, the direction of the electromagnetic force generated when the power is applied to the moving coil 210 is generated in the opposite direction from the inside and the outside of the moving coil 210, The magnetizing directions of the stationary magnets 120 disposed inside and outside the moving coil 210 may be formed in opposite directions. Therefore, a larger vibration force can be obtained even in the same coil current.
7 shows a bodily-sensible acoustic receiver 1 equipped with the vibration-generating device 10.
Referring to the drawings, a bodily-sensible vibration acoustic receiver 1 includes a vibration generating section 10; An acoustic generator 20; And a housing (30). The vibration generating unit 10 may output the vibration in accordance with the acoustic signal received from the sound reproducing apparatus. The sound generating unit 20 can output sound according to the sound signal. The housing 30 can accommodate the vibration generating unit 10 and the sound generating unit 20.
The vibration generating unit 10 may include a high frequency cutoff unit that is electrically connected to the moving coil 210 to cut off a vibration output having a frequency higher than a set reference frequency. At this time, the high-frequency blocking portion can be installed in the fixing portion 100. At this time, the high frequency cutoff unit can cut off the power supplied through the fixing unit 100 at the time of high frequency output, thereby preventing high frequency coupling that may occur in the vibration generating unit 10 at the time of high frequency output.
The high-frequency blocking unit can realize a high-quality bodily-sensible vibration acoustic receiver that generates sufficient sounding both in the low-frequency band and the high-frequency band while preventing the high-frequency sounding in the high-frequency band from occurring. The high-frequency blocking portion may include a low-pass filter using an inductor.
Unlike the sound generator 20, which generates sound by vibrating a light diaphragm, the vibration generator 10 generates a large vibration force in a low frequency band by vibrating a relatively heavy vibrator to provide a rich sound. However, In the band, the output of the sound is weak, so that it does not generate enough sound and it is possible to generate a joint in the high frequency band.
When the vibration generating unit 10 is simply coupled to the sound generating unit 20, the vibration generating unit 10 receives the signals received by the sound generating unit 20 while receiving the normal sound in the high frequency band, The output of the generating unit 20 is lowered and the sound is reduced in the high frequency band of the sound generating unit 20. [ The high frequency cutoff unit is disposed in a space provided in the housing 30 and is electrically connected to the vibration generating unit 10 to cut off the high frequency band of the acoustic signal received from the sound reproducing apparatus.
The high frequency cutoff unit may be integrally fixed to one side of the power connection unit 400 provided in the vibration generating unit 10. When the power connection unit 400 is coupled to the power connection unit 400 using surface mounting technology, So that the process can be simplified. In the low frequency band, the high frequency cutoff unit can pass the acoustic signal as it is, and the vibration generating unit 10 can vibrate normally to complement the lacking sound of the sound generating unit 20, thereby realizing a rich sound in the low frequency band. In the high frequency band, the signal received by the vibration generating unit 10 is blocked, so that all the acoustic signals are transmitted to the sound generating unit 20, so that normal sound can be generated even in the high frequency band.
That is, it is possible to realize a high-quality bodily-sensible vibration acoustic receiver 1 that does not generate high-frequency noise in the high-frequency band while generating a sufficient sound in both the low-frequency band and the high-frequency band by the high-
The high-frequency blocking unit may be a low-pass filter using an inductor. The cut-off frequency, the frequency at which the signal is limited, can be implemented below 500 Hz. However, in order to reduce the cut-off frequency, the inductance of the inductor constituting the high-frequency cut-off portion must be large. To increase the inductance, the size of the inductor may become large, which may be difficult to apply to a small acoustic receiver.
The housing 30 may be integrally formed as shown in the figure so that the vibration generating unit 10 and the sound generating unit 20 may be installed therein and the vibration generating unit 10 and the sound generating unit 20 The housings 31 and 32 are separately provided and the housings 31 and 32 are directly coupled to each other or coupled to each other through wires or rubber or plastic or metal so that the vibration generated in the vibration generating portion 10 is transmitted to the outside And can be connected and configured.
The housing 30 may be made of synthetic resin, metal, or wood, which can transmit the vibration generated by the vibration generating unit 10 without being absorbed. The bodily sensation vibration acoustic receiver 1 may be connected by wire to receive acoustic signals generated from the sound reproducing device or may be integrated with the bodily sensation vibration acoustic receiver 1 to inconvenience due to the wired connection It can also be configured without. The wireless signal receiving module can be configured as a Bluetooth module or a ZigBee module.
The high-frequency blocking unit has a characteristic of a low-pass filter having a characteristic that a signal is passed below a cut-off frequency but a signal is blocked when a frequency becomes high. The circuit configuration of the bodily-sensible acoustic receiver 1 is such that an acoustic signal received from a sound source is divided and supplied to the sound generating section 20 and the vibration generating section 10 in parallel and connected to the vibration generating section 10, Thereby blocking the high frequency band of the acoustic signal supplied to the vibration generating unit 10. [ The high frequency cutoff part can be constructed using an inductor. Inductors usually consist of coil windings. When a current flows through a coil, a magnetic field is formed around the coil. When the direction of the current changes, the magnetic field instantaneously interrupts the current flow. As the direction of the current changes rapidly, The resistance that hinders the flow of current becomes large, and the effect of the low-pass filter is obtained.
The cut-off frequency can be reduced to 500 Hz or less. However, in order to lower the cut-off frequency, the inductance of the inductor constituting the high-frequency cutoff part must be large. To increase the inductance, the size of the inductor may become large and thus it may be difficult to apply to the small-sized acoustic receiver. .
It can be seen that the vibration acceleration of the vibration generating unit 10 is largely generated in various frequency bands when the high frequency breaking unit is not connected. In the embodiment in which the inductor is connected in series to the vibration generating section 10, the vibration generated in the vibration generating section 10 does not change in the low frequency band but can be greatly reduced in the high frequency band. It can be seen that vibration in the high-frequency band hardly occurs in the other example of the vibration generating portion 10 to which the inductor is connected.
By applying the high-frequency cut-off portion in this manner, the vibration force in the high-frequency band can be removed while ensuring the vibration force in the low-frequency band of the vibration generating portion 10.
The high frequency cutoff unit may be disposed in the space provided in the housing 30 and electrically connected to the vibration generating unit 10. The high frequency blocking portion may be provided with a coupling space outside the housing 30. The high frequency cutoff portion may be fixed to one side of the power connection portion 400 provided in the vibration generating portion 10 so as to be integrally disposed. At this time, when the power connection unit 400 is coupled using the surface mounting technique, circuit connection and fixing can be performed at the same time, which simplifies the process.
8 shows a bodily-sensible acoustic receiver 2 including a vibration transmission portion 40. Fig. Fig. 9 shows the internal structure of the bodily-sensible acoustic receiver 2 of Fig.
The housing 30 may include a first housing 31 for housing the vibration generating portion 10 and a second housing 32 for housing the sound generating portion 20. At this time, the first housing 31 and the second housing 32 may be integrally formed. As another embodiment, the first housing 31 and the second housing 32 may be integrally formed by wire or rubber, plastic, or metal raw material by means of the third housing 33, Or to be distinguished.
The bodily-sensible vibration acoustic receiver 2 may include a vibration transmission portion 40 in which the housing 30 contacts the skin around the ears to transmit vibration. In addition, a part of the vibration transmitting portion 40 may be protruded in a right angle direction or an inclined direction of the sound output direction so that the vibration transmitting portion 40 can be inserted into and contacted with the false portion. Further, the vibration transmitting portion 40 may form a cross section in a part of the housing 30 in the acoustic output direction. Further, the center line of the vibration movement of the vibration generating section 10 may be arranged so as to be spaced apart from the center line of the vibration of the sound generating section 20. [ As another embodiment, a vibration transmitting member may be separately attached or formed on the surface of the vibration transmitting portion 40 in contact with the skin.
The bodily-sensible vibration acoustic receiver 2 is constituted such that an acoustic-generating portion 20 and a vibration-generating portion 10 are mounted on a housing 30 having a space therein. The vibration-transmitting portion 40 is in contact with the ear- Thereby increasing the area through which the vibration is transmitted and effectively transmitting the vibration generated in the vibration generating unit 10. [ The sound generating unit 20 includes an acoustic part permanent magnet 22, an acoustic part coil 21 and a diaphragm 24. [
An electromagnetic force is generated in the acoustic part coil 21 in accordance with an acoustic signal inputted from an acoustic reproducing device such as a smart phone, an MP3 player and a PC, and the acoustic part is coupled to the acoustic part coil 21 by interacting with the acoustic part permanent magnet 22 The diaphragm 24 vibrates to generate sound. It is possible to increase the magnetic efficiency of the acoustic part permanent magnet 22 by arranging the acoustic part yoke 23 made of a ferromagnetic material on one side of the acoustic part permanent magnet 22 to construct the magnetic circuit. The sound generating unit 20 may be any type of small speaker structure adopted in a conventional small acoustic receiver in addition to the structure shown in the drawings.
There may be a cover 25 that can protect the sound generator 20 from the diaphragm 24 side. The vibration generating unit 10 includes a case 110 forming a space therein, a power connection unit 400 coupled to the case 110, a vibration coil 210 electrically connected to the power connection unit 400, A plurality of vibrating portion fixed magnets 120 disposed on the inner side surface and an outer surface of the vibrating portion 210, a weight member 220 integrally coupled to the plurality of vibrating portion fixed magnets 120, And the elastic member 300 having the side fixed and the other side connected to the case 110.
When the acoustic signal received from the sound reproducing device is applied to the vibration coil 210 through the power connection part 400 and electromagnetic force is generated, the vibrating part fixed magnet 120 interacts with the vibration part fixed magnet 120, And moves to the lower side to generate vibration.
The weight member 220 may be formed of a ferromagnetic material to form a magnetic circuit to prevent leakage of magnetic force generated in the vibration fixed magnet 120 and increase magnetic efficiency. 110 and the other side thereof is coupled to the weight member 220 so as to increase the vibrating force generated by the vibrating portion coil 210 and the vibrating portion fixing magnet 120 by resonance. The elastic member 300 may be fixed to the case 110 and the weight member 220 by welding, bonding, caulking or the like, and may be made of a metal having good elasticity.
The vibrating part yoke 130 made of a ferromagnetic material is provided on one side of the vibrating part fixed magnet 120 to prevent the leakage of the magnetic force generated in the vibrating part fixing magnet 120, The vibration force generated in the magnet 120 can be increased. The case 110 may be formed integrally with the housing 30.
When the weight of the acoustic part coil 21 vibrating upward or downward when vibrating the acoustic generator 200 is compared with the weight of the weight member 220 of the vibrating part vibrating in the vibration generator 10, The member 220 is heavier and the spring constant of the elastic member 300 of the vibration generating portion 110 is higher than that of the diaphragm 24 of the sound generating portion 20, Since the duration of the residual vibration of the sound source 10 is longer than that of the sound source 10, the three-dimensional sound effect is felt.
In particular, the sound generator 20 stimulates an auditory signal through the eardrum in the ear through the air to transmit an acoustic signal to the brain, and the vibration generator 10 generates vibration according to the acoustic signal, The sound signal is transmitted to the brain through the skin or bone near the ear, so that the transmission method of the acoustic signal is varied, so that the three-dimensional effect of the sound is also felt.
When the external appearance of the bodily-sensible acoustic receiver 2 is formed in a cylindrical shape, as shown in Fig. 9 (d), the external diaphragm positioned in the same direction as the vibration direction of the bodily-sensible acoustic receiver 2 is contacted to effectively transmit the vibration It may be difficult. The bodily sensation of the vibration generated in the bodily-sensible acoustic receiver can be reduced.
However, if the vibration transmitting portion 40 protruding in the direction perpendicular to the sound output direction is formed so that the bodily-sensible acoustic receiver 2 can be inserted into and contacted with the aisle portion as shown in Fig. 11 (e) ) And the contact area of the ear can be increased and the dummy positioned vertically to the vibration direction of the bodily sensation vibration acoustic receiver 2 and the vibration transmission portion 40 come into contact with each other to cause the vibration generated in the bodily sensation vibration acoustic receiver 2, The vibration can be directly transmitted to the surface in the direction perpendicular to the vibration direction through the vibration isolator 40, so that the vibration can be effectively transmitted, thereby maximizing the bone conduction effect of the bodily-sensible acoustic receiver 2.
The vibration transmitting portion 40 may be formed in a part of the housing 30 and may have a cross section in an acoustic output direction so as to be in contact with a large area. The housing 30 may be integrally formed as shown in FIG. 8 to mount the vibration generating unit 10 and the sound generating unit 20. In another embodiment, the vibration generating unit 10 and the sound generating unit 20 are separately provided with the housings 31 and 32, respectively, and the first and second housings 31 and 32 are provided by the third housing 33, May be directly coupled to each other or may be connected to each other through a wire, rubber, plastic, or metal so that the vibration generated in the vibration generating portion 10 is transmitted to the outside. The housing 30 may be made of synthetic resin, metal, or wood, which can transmit the vibration generated by the vibration generating unit 10 without being absorbed.
The acoustic receiver 2 using the bodily-sensible vibration may be connected by wire to receive the acoustic signal generated from the acoustic reproduction device, or the integrated wireless signal receiving module may be integrated into the acoustic receiver 2 using the bodily- So that there is no inconvenience caused by the problem. The wireless signal receiving module can be configured as a Bluetooth module or a ZigBee module.
In Fig. 10, the sound transmission path of the bodily-sensible vibration acoustic receiver 2 is shown.
Referring to the drawing, when sound is transmitted to the ear, vibration of the air is transmitted to the eardrum 12 through the ear canal 11 to vibrate the eardrum 12 so that the vibration is transmitted through the cochlea 13 to the auditory nerve 14, So that the sound is sensed. In the case of the bone conduction receiver, vibration is transmitted to the auditory nerve by the bone conduction 101 through the cartilage and bone by contacting with the skin without being transmitted through the air, thereby sensing the sound.
The bodily-sensible vibration acoustic receiver 2 incorporating the bodily-sensible vibration receiver 2 applies all of the sound transmission methods, and the sound generated by the sound generating unit 20 sounds through the air conduction 102 and sounds through the ear canal 11, The vibration generated in the vibration generating unit 10 contacts the ear through the bone conduction 101 to transmit sound through the cartilage and bone. The air conduction 102 and the bone conduction 101 are used together to transmit an acoustic signal to the brain, so that the transmission method of the acoustic signal is varied, so that the three-dimensional effect of the sound is felt.
When the weight of the acoustic part coil 21 which vibrates upward or downward during the vibration of the sound generating part 20 is compared with the weight of the vibrating part weight member 220 vibrating in the vibration generating part 10, The weight member 220 is heavier and the spring constant of the elastic member 300 of the vibration generating portion 10 is higher than that of the diaphragm 24 of the sound generating portion 20, The duration of the residual vibration of the unit 10 is longer and gives a different feeling, so that there is an effect that the three-dimensional effect of the sound is felt.
Fig. 11 shows an embodiment of the appearance of the bodily-sensible vibration acoustic receiver 2. Fig. 11 (a) is a view for explaining the structure and name of a human ear. Fig. The ear of the human being is located facing the outer ear canal (11), which is the passage through which the sound is transmitted to the eardrum, the crown (41) connected to the outer periphery of the ear canal, A ladder 42 and the like. The periphery of the ear is a peripheral wheel 44, a two-wheeled wheel 43, and a left-handed wheel 46. 11 (b) is an example of earphone mounting. As shown in FIG. 11 (b), the earphone is inserted into the ear canal 101 and the transporter 45 and the bobbin 42 are supported on both sides.
11 (d), when the external appearance of the bodily-sensible acoustic receiver is formed into a cylindrical shape, it may be difficult to effectively transmit vibration due to contact with only the external surface of the bodily sensation vibration receiving receiver. The bodily sensation of the vibration generated in the bodily-sensible acoustic receiver is reduced.
11 (c), if the vibration transmitting portion 40 protruding in the direction perpendicular to the sound output direction is formed so that the bodily sensation vibration receiving receiver 2 can be brought into contact with the aisle portion 41, it is possible to increase the contact area between the bodily-sensible vibration acoustic receiver 2 and the ear as shown in Fig. 5E, and the bodily contact 41, which is located in the vibration direction of the bodily- The vibration generated in the acoustic receiver 2 can be directly impacted to the surface in the direction perpendicular to the vibration direction through the vibration transmission portion 10 so that the vibration can be effectively transmitted to maximize the bone conduction effect of the bodily- .
12 shows various embodiments of the bodily-sensible acoustic receiver 2 according to the present invention. 12A is a perspective view of the vibration generating portion 10 in which the center of the sound generating portion 20 and the center of the vibration generating portion 10 are arranged differently to form the vibration transmitting portion 40 . 12 (b) shows another embodiment of the bodily-sensible acoustic receiver 2 in which the vibration generating section 10 is formed larger than the sound generating section 20 and the vibration transmitting section 40b ) Are formed. The size of the vibration generating section 10 is increased so that the vibrating section stationary magnet 120 and the vibrating section coil 210 constituting the vibration generating section 10 can be designed to be larger to increase the magnetic force and the weight, It is possible to realize a high-performance bodily-sensible acoustic receiver 2.
12 (c) shows a structure in which the center of the sound generator 20 and the vibration generating unit 10 are aligned with each other, and a part of the housing 30 is formed in a protruding shape to constitute the vibration transmitting unit 40b. There is no bending in the inner shape of the housing 30, and the housing 30 is simplified, which is advantageous in that it is easy to manufacture.
12 (d) shows a structure in which the center of the sound generating part 20 and the vibration generating part 10 are aligned with each other, and a vibration transmitting member 40d is coupled to a part of the housing 30 so as to protrude, 40c. When the vibration transmitting member 40d is separately coupled as described above, various sizes and shapes of the vibration transmitting member 40d can be combined and used so as to fit various people's ears. Therefore, the vibration transmission can be more effectively performed by fitting the contact surface to the shape of the ear of the individual so that the performance of the bodily-sensible acoustic receiver 2 can be maximized.
According to the present invention, by implementing the bodily-sensible vibration by the coil vibration structure, electromagnetic noise can be reduced.
In addition, since a horizontal double magnet structure is provided and a coil is inserted between the double magnets to vibrate, a large vibration force can be obtained, and the device can be downsized due to space efficiency.
Further, by disposing the heavy material below the coil, the diameter of the device can be reduced and the device can be downsized.
Further, by applying a ferromagnetic material to the case, it is possible to shield the electromagnetic wave which may be generated in the permanent magnet and / or the coil, thereby improving the user's health.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be apparent to those skilled in the art that various modifications and variations can be made therein without departing from the spirit and scope of the invention. It will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the present invention.
