KR20110070084A - Sensory signal output apparatus - Google Patents

Abstract

PURPOSE: A sensation signal output device is provided to prevent collision with a case and noise due to interference and abrupt feature variation, by providing whole vibration force due to a reciprocating motion. CONSTITUTION: A sensation signal output device(10) has a magnetic circuit including a top plate and a magnet vibrating by reacting with a first coil(11). A first and a second leaf spring are fixed to both sides of the magnetic circuit in a vibration direction. The first and the second leaf spring have a symmetric structure performing contraction and expansion motion to each other. A second coil changes current flow according to an alternating signal applied from an external signal source. The second coil is wound around the outer circumference of a pipe type bobbin(12).

Description

Sensory signal output device {SENSORY SIGNAL OUTPUT APPARATUS}

The present invention relates to a sensory signal output device, and more particularly to a sensory signal output device that provides only the intact vibration force by the reciprocating motion, without direct collision with the case.

In general, the sensory signal output device converts an electrical signal input from a signal source into a mechanical signal and outputs sound or vibration force such as a speaker, a receiver, a buzzer, or a vibrator (vibrator) that outputs sound or generates vibration force. It is a device to output.

Conventionally, the sensor signal output device, in particular, the vibrating body is positioned in the outer circumferential direction or the inner circumferential direction of the magnet and the top plate which are laminated and fixed to the yoke and the upper surface of the yoke by sequentially bonding or welding, so as to the coil In response to the magnetic flux formed in the air gap in accordance with the direction of the alternating current signal applied, the magnetic circuit including the magnet and the top plate (including the yoke or / and the weight, depending on the function and design) vibrates and generates vibration force.

At this time, the magnet and the top plate is divided into magnetic circuits, and the coil (depending on the function and design, including the diaphragm) is divided into vibration parts.

Recently, in the vibrating device that generates the vibration force as described above, the coil circuit is provided at both ends of the magnetic circuit reciprocating while reciprocating to alleviate the shock caused by the vibration (Korean Patent No. 596060 (Application No. 10- 2004-25954 (vibration generator of portable communication terminal)) was introduced.

As shown in FIG. 1, the above-described technology is a portable communication terminal including a coil generating a magnetic force by an applied electric signal (power source) and a magnet plunger linearly moving inside the coil according to a change in the magnetic force. A vibration generating device comprising: a tubular bobbin (110) made of a nonmagnetic material and having a coil (112) wound only on one side of an outer surface thereof; Yokes 120 and 130 respectively installed at both ends of the bobbin 110 such that the elastic bodies 121 and 131 fitted to one side thereof face each other inside the both ends of the bobbin 110; A magnetic plunger 140 inserted into the bobbin 110 and installed to vibrate between the elastic bodies 121 and 131 of the yokes 120 and 130; A connecting plate 160 installed only on one side of the outer surface of the yoke 120 and 130; The connecting terminal 161 and the connecting terminal 161 which are provided to be soldered and coupled to the terminal of the coil 112 on one side of the package to wrap each component from the outside can be soldered and coupled to the terminal input signal from the outside It is composed of a case 170 having a terminal 162 to be provided.

In the above technique, when an electrical signal (alternating current) is applied to the coil 112, the magnetic plunger 140 having the polarity of the north pole and the south pole is changed within the bobbin 110 according to the change of the magnetic force line generated in the coil 112. Linear reciprocating motion by repulsion or suction force in the axial direction, which causes the magnetic plunger 140 to vibrate while colliding with both yoke 120 and 130, or by the action / reaction by the vibration of the magnetic plunger 140 itself Vibration force is generated.

However, in the conventional sensory signal output device for generating a vibration force as described above, the magnetic plunger 140 corresponding to the magnetic circuit is buffered by the elastic bodies 121 and 131, but is "tinged" and "tinged" in the event of a collision. There is a problem that the noise is generated to act as a noise.

In addition, among the conventional sensory signal output devices, a number of structures that support the magnetic circuit by using the leaf spring has been introduced.

For example, Korean Patent Registration No. 5395176 (filed date; October 22, 2001; sound; vibration generating speaker) is a suspension spring which is provided above and below the magnetic circuit, respectively.

However, the conventional sensory signal output device as described above has a problem that the impact sound is generated by the collision with the case when the vibration force is out of the support force of the suspension spring, that is, the maximum vibration force.

 It is an object of the present invention to provide a sensory signal output device that generates only an intact vibration force by reciprocating motion without direct collision with the case.

The present invention for achieving the above object is a sensor signal output device having a magnetic circuit including a magnet and a top plate which is supported by a leaf spring and vibrates in response to a coil in which an alternating signal flows, both ends of the vibration direction of the magnetic circuit. A pair of leaf springs are fixed to each other to support elasticity, but the pair of leaf springs are inflated when contracted with each other, provided with a symmetrical structure that contracts when inflated, and the leaf spring contraction force in the direction of vibration is highest. It is characterized in that the contraction restraint force of the other leaf spring is greater than before reaching.

The present invention provides only the intact vibration force by reciprocating motion without directly colliding with the case, thereby preventing the characteristic change such as noise and characteristic sudden change due to collision and interference with the case.

In addition, by increasing the volume of the weight, the bass sound characteristics can be improved.

2 is an exploded perspective view showing a configuration according to an embodiment of the present invention, Figure 3 is a more detailed configuration according to an embodiment of the present invention prior to explaining the present invention 4 is an exploded perspective view illustrating a vibration main part separately of the present invention, FIG. 5 is a sectional view showing a configuration according to an embodiment of the present invention, and FIG. Each cross-sectional view is shown, wherein reference numeral 10 denotes a sensory signal output device of the present invention.

The present invention will be described below with reference to the accompanying drawings presented as above.

First, the present invention, as shown in Figures 2 to 5 of the accompanying drawings, the magnet 13 and the top plate 13a which is supported by the leaf spring (S) and vibrates in response to the coil 11 through which the alternating signal flows. In the sensory signal output device 10 having a magnetic circuit (M) comprising a), a pair of leaf springs 1, 2 (15, 16) are fixed to both ends of the vibration direction of the magnetic circuit (M) The pair of leaf springs 1, 2 (15) and 16 are supported by each other, and the pair of leaf springs 1, 2 (15) and 16 are inflated when contracted with each other, and provided with a symmetrical structure that contracts when inflated. It may be that the contraction restraint force of the other leaf spring is greater before reaching.

Here, in the present invention, the coil 14 may be a coil wound in a circular shape in which a current flow changes according to an alternating signal applied from an external signal supply source, and a length for determining a vibration range of the magnetic circuit M. The tubular bobbin 12 of one side may be wound on the outer peripheral surface, may be wound on the middle portion, or may be wound on both ends.

On the other hand, the magnetic circuit (M) of the present invention is a magnet (13) for generating a magnetic force; A top plate 13a fixed to the upper surface of the magnet to concentrate magnetic force; It may be configured to include; a weight body 14 is laminated on the lower surface of the magnet 13, weighting the weight to increase the weight velocity during vibration.

In this case, the magnet 13 and the top plate 13 may be located at one end of the weight body 14, may be located at both ends, or may be located in the middle portion (two weights). have.

The magnet 13 may be a ring magnet.

In addition, the top plate 13a may be a ring-shaped plate body made of a magnetic material having a larger diameter than that of the magnet 13.

In addition, the weight 14 is a circular block penetrating a non-magnetic center, the material may be tungsten or an alloy or other metal material including tungsten.

In this case, the weight body 14 of the magnetic circuit M may be a weight body in the form of a pole having a volume larger than that of the magnet 13 and the top plate 13a. For example, the diameter, that is, the width is the same as the magnet 13, the length may be a volume having a length of at least two times or more than five times the length (height) of the magnet 13 and the top plate 13a is combined. . However, the length may be changed in consideration of the magnetic force of the magnet 13 and the elastic support force of the leaf springs 1, 2 (15) and 16.

In the above, the laminated structure of the magnetic circuit (M) is introduced by the leaf spring 1 (15), penetrates the inside of the magnetic circuit (M), by the rivet pin (17) drawn out to the leaf spring 2 (16) Rivets can remain fixed.

On the other hand, the leaf springs 1, 2 (15, 16) of the present invention in contact with the magnetic circuit (M) extends in the free space direction from the center portion fixed by the rivet pin 17, the inclined surface is extended May be a horn-shaped carbohydrate that is cut and elastic.

At this time, the extended ends of the leaf springs 1, 2 (15) and 16 are fitted to both ends of the bobbin 12, and are inserted into the case body 18 to be described later, and the case body 18 is an open end. Curing coupling is made to the cover 19 to be covered in the assembly can be completed.

Meanwhile, in the present invention, the rivet pin 17 penetrates through the center of the leaf spring located at one end of the magnetic circuit M, passes through the magnetic circuit M, and is located at the other end of the magnetic circuit M. Protruding through the center of the other leaf spring can be riveted.

Referring to the operation of the present invention configured as described above are as follows.

First, in the present invention, when an alternating signal is applied to the coil 11, the magnetic circuit M including the magnet 13 having polarities of the north pole and the south pole in accordance with the change of the magnetic force line is in the long axis direction in the bobbin 12. Rebound or suction as it is a linear reciprocating motion, thereby generating a vibration force.

At this time, the magnetic circuit (M) is supported by the elastic spring of the leaf springs 1, 2 (15, 16) and provides only an intact vibration force without directly hitting the case body 18 and the cover 19.

The reason for this is that, as shown in FIG. 6, when an alternating signal is applied to the coil 11, the magnetic circuit M including the magnet 13 having polarities of the N pole and the S pole according to the change of the magnetic force line. When the linear reciprocating motion while being repulsed or attracted in the long axis direction in the bobbin 12, a leaf spring fixed to one end of the magnetic circuit (M), for example, the leaf spring 1 (15) is pushed back and contracted, The leaf spring 2 16 fixed to the other end of the magnetic circuit M is pulled and expanded.

At this time, the leaf spring 1 (15) is to continue to shrink, so that it will collide with the opposite side, that is, the cover 19, but the entire surface is flat as the leaf spring 1 (15) made of a horn contracted Since the contraction restraining force of the leaf spring 2 (16) is greater than the contraction force before reaching the state, the leaf spring 1 (15) contracts in a planar state so that the magnetic circuit (M) does not impinge on the cover (9). .

As described above, the reason why the shrinkage preventing force of the leaf spring 2 (16) is larger than the contraction force of the leaf spring 1 (15) is as follows.

The leaf springs 1, 2 (15) and 16 extend in the direction of free space from the central portion fixed by the rivet pin 17 in contact with the magnetic circuit M, and the inclined surface is cut and elastically acted. It is a horn-shaped ballistic body, the leaf spring 1 (15) and leaf spring 2 (16) is formed symmetrically.

Therefore, as described above, when the leaf spring 1 (15) contracts, the leaf spring 2 (16) is expanded, the contraction of the leaf spring 1 (15) is the shape changeable range of the leaf spring ( The expansion of the leaf spring 2 (16) is outside the shape changeable range of the leaf spring, and thus, at some point in the expansion. In this case, the mechanical resistance of the leaf spring itself is strongly received, and since the point is before the leaf spring 1 15 collides with the cover 19, the collision is prevented.

This is equally true when the magnetic circuit M vibrates in the direction of the leaf spring 2 (16), so that the contraction preventing force is greater than the contracting force, thereby preventing collision.

While the invention has been described and illustrated with reference to preferred embodiments for illustrating the principles of the invention, the invention is not limited to the configuration and operation as such and illustrated, and is not intended to be applied hardware The range is also not limited.

Rather, those skilled in the art will appreciate that many modifications and variations of the present invention are possible without departing from the spirit and scope of the appended claims.

Accordingly, all such suitable changes and modifications and equivalents should be considered to be within the scope of the present invention.

1 is a cross-sectional view showing the configuration of a conventional vibration device.

Figure 2 is an exploded perspective view showing a configuration according to an embodiment of the present invention.

Figure 3 is an exploded perspective view showing in more detail the configuration according to an embodiment of the present invention.

Figure 4 is an exploded perspective view showing the vibration main part separately in the present invention.

5 is a cross-sectional view showing a configuration according to an embodiment of the present invention.

6 is a cross-sectional view each showing an operating state of the present invention.

<Description of the symbols for the main parts of the drawings>

10: sensory signal output device 11: coil

12: bobbin 13: magnet

13a: top plate 14: weight

15,16: leaf spring 1,2,17: rivet pin

18: case body 19: cover

M: Magnetic circuit S: Leaf spring

Claims (14)

The sensor signal output device 10 having a magnetic circuit M, which includes a magnet 13 and a top plate 13a that are supported by the leaf spring S and vibrate in response to the coil 11 through which the alternating signal flows. A pair of leaf springs 1, 2 (15) and (16) are fixed to both ends of the magnetic circuit (M) in the direction of vibration, and the pair of leaf springs 1, 2 (15) and (16) are supported. Each of the expansion and contraction to each other, when the expansion is provided with a symmetrical structure that contracts when the expansion, the contraction restraining force of the other side leaf spring is greater than before the contraction force of the leaf spring in the vibration progress direction reaches the highest point Sensory signal output device. The coil 14 of claim 1, wherein the coil 14 is a coil wound in a circular shape in which a current flow changes according to an alternating signal applied from an external signal source, the length of which determines a vibration range of the magnetic circuit M. Tubular bobbin (12) sensory signal output device, characterized in that wound on one end of the outer peripheral surface. The sensor signal output device according to claim 1, wherein the coil (14) is wound around the outer peripheral surface of both ends of the tubular bobbin (12) having a length for determining the vibration range of the magnetic circuit (M). 2. The sensory signal output device according to claim 1, wherein the coil (14) is wound around a middle outer circumferential surface of a tubular bobbin (12) having a length for determining the vibration range of the magnetic circuit (M). The magnetic circuit of claim 1, further comprising: a magnet (13) generating magnetic force; A top plate 13a fixed to the upper surface of the magnet to concentrate magnetic force; And a weight body (14) stacked on the lower surface of the magnet (13) to increase the weight speed when the vibration is increased by weight. The sensor signal output apparatus according to claim 1, wherein the magnet (13) and the top plate (13) are located at one end of the weight body (14). The sensor signal output apparatus according to claim 1, wherein the magnet (13) and the top plate (13) are located at both ends of the weight body (14). The sensor signal output apparatus according to claim 1, wherein the magnet (13) and the top plate (13) are located in the middle of the weight body (14). The sensory signal output device according to claim 1, wherein the weight body (14) is a circular block through which a center is not magnetic. The sensory signal output device according to claim 1, wherein the weight body (14) is tungsten or an alloy containing tungsten. The sensor signal output device according to claim 1, wherein the weight body (14) has a long pole shape having a volume larger than that of the magnet (13) and the top plate (13a). The inclined surface of claim 1, wherein the leaf springs 1, 2 (15, 16) extend in a free space direction from a central portion fixed by the rivet pin 17 in contact with the magnetic circuit (M). Is a sensory signal output device characterized in that the elastic body of the horn shape is elastically cut. The sensor signal output apparatus according to claim 1, wherein the leaf springs (1) and the leaf springs (2) are symmetrically provided. The magnetic rivet pin 17 of claim 1, wherein the rivet pin 17 penetrates through the center of the leaf spring positioned at one end of the magnetic circuit M, passes through the magnetic circuit M, and is located at the other end of the magnetic circuit M. Sensing signal output device, characterized in that the riveting is projected through the center of the other leaf spring.

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