KR20000021417U - Integrated Vibrating and sound producing Device - Google Patents

Abstract

The present invention relates to a vibration / sound generating apparatus applicable to selectively generate buzzer sound and sound in response to a high frequency signal or a low frequency signal applied to a voice coil in a communication device.

According to the present invention, the voice coil 12 fixed to the elastic diaphragm 11 in the case 10, the magnet 14 installed on the yoke member 13 facing the voice coil 12, and the voice In a structure including an elastic body 15 to selectively generate vibration in response to a low frequency signal selectively applied to the coil 12, the elastic body 15 is the magnet 14 to the yoke member 13 It consists of a plurality of elastic support pieces arranged to extend horizontally or upwardly at regular intervals between the yoke member 13 and the case 10 so as to float at a constant height in the case 10. Preferably, according to the present invention, a bent portion is formed at a predetermined portion of the elastic support piece.

Therefore, in the vibration / sound generator, a buzzer sound is generated when a high frequency signal is applied to the voice coil, while a yoke member having an upper magnet vibrates when a low frequency signal is applied, and the vibration mediates the elastic support piece. Will be delivered to the case.

Description

Integrated Vibrating and Sound Producing Device

The present invention relates to a vibration / sound generating device for a communication device, and more particularly applied to a communication device for personal mobile communication, etc. Vibration for a communication device integrated with a vibration structure and sound generating structure for recognizing the arrival of the call signal It relates to a sound generating device.

Currently, a personal mobile communication device including a wireless pager or a mobile phone is generally equipped with an alarm device for generating an audio alarm signal to alert the arrival of a call message.

The alarm by such an alarm device is roughly divided into an acoustic alarm function performed by an optional sound and a vibration function for executing an alarm by vibration in an acoustic muting state. Vibration alarm device for performing the vibration alarm function is configured separately in a single communication device.

1 is a view showing the structure of a sound alarm device for a communication device according to a conventional example, the sound alarm device shown in the drawing is a pole piece (Pole piece) 2 is installed in the central portion of the case (1) On the other hand, the female coil 3 is wound around the pole piece 2. In addition, a plurality of magnets are installed in the case 1, and a diaphragm 6 in which an armature 5 is installed at the center to face the upper end of the pole piece 2 is also provided in the case 1. )

However, the electronic sound generator shown in Fig. 1 obtains only a single peak reproduction characteristic showing a single peak at a resonance point of a desired frequency, whereas only a very small sound pressure is obtained at a low frequency. It becomes impossible to use.

In view of such a situation, an alarm device having an integrated sound alarm function and a vibration function has recently been proposed, an example of which is disclosed in US Patent No. 5,528,697 issued June 18, 1996. .

That is, the 'integrated vibration / sound generator' shown in US Pat. No. 5,528,697 is provided such that the acoustic generator reacting at high frequency and the vibration generator reacting at low frequency can be operated simultaneously or independently of each other.

In the first embodiment disclosed in the above patent, the pole piece is fixed to the center of the spring body, the armature is mounted to the center of the elastic diaphragm facing the pole piece, and the plurality of magnets to surround the pole piece in the case; The female coil is arranged. Therefore, in the above configuration, when a high frequency signal or a low frequency signal is applied to the excitation coil, a buzzer sound (ie, an acoustic signal) at 2-4 Hz or vibration at 50-100 Hz is selectively generated.

Further, in the second embodiment of the patent, the voice coil is mounted at the center of the elastic diaphragm, and a magnet is fixed to the center of the spring body, and the diaphragm and the elastic body have the magnet centered in the voice coil. The positions are determined to face each other at. In the above configuration, similarly to the case of the first embodiment, a sound having a 2-4 Hz high band characteristic and / or a vibration having a low band characteristic of 50-100 Hz is selectively generated. It is applied to the voice coil to vibrate the spring body in the polar direction of the magnet.

In the third embodiment of the patent, the voice coil is fixed to the diaphragm, and a magnetic unit made of a pole piece, an annular magnet, and a yoke is attached to the elastic body. Therefore, in such a configuration, when a high frequency signal is applied to the voice coil, a vibration of the diaphragm is generated to generate a sound (buzzer sound), while when a low frequency signal is applied to the voice coil, a magnetic unit at an adjacent position is moved to a low frequency on the spring body. It will vibrate.

However, in the integrated vibration / sound generating apparatus disclosed in the above-mentioned US patent, as the spring body is disposed generally downward in the inside of the case, the possibility of design difficulty with respect to the amplitude at the time of vibration increases, and the elastic body The load applied to the spring body in the center of the upper side of the pole piece (first embodiment) or the magnet (second embodiment) having a constant load, or the magnetic unit consisting of the pole piece, the magnet and the yoke is mounted If the spring body is bent by the possibility of being linked to the failure of the vibration function is also increased.

Accordingly, the present invention has been made in view of the above-described prior art, and is designed for a communication device in which a load width of a magnetic unit is strengthened while a sufficient amplitude of vibration at the time of vibration alarm is secured while the sound alarm function and the vibration alarm function are integrally designed. The object is to provide a vibration / sound generator.

In order to achieve the above object, according to a preferred embodiment of the present invention, the voice coil is fixed to the elastic diaphragm in the case, the magnet installed on the yoke member facing the voice coil, and selectively applied to the voice coil In the vibration / sound generating device for a communication device comprising an elastic body to selectively generate a vibration in response to a low frequency signal to generate a buzzer sound selectively in response to the vibration when a high frequency signal is applied to the voice coil The elastic body may include a vibration / sound generator for a communication device including a plurality of elastic support pieces disposed at regular intervals between the yoke member and the case such that the magnet floats the yoke member at a predetermined height in the case. Is provided.

According to the present invention, the elastic support piece is horizontally extended between the case and the yoke member or upwardly extended at a predetermined angle from the case toward the yoke member.

In addition, according to the present invention, preferably, a bent portion is formed at a predetermined portion of the elastic support piece.

According to the vibration / sound generating device for a communication device according to the present invention, a plurality of elastic support pieces as an elastic body for supporting the yoke member installed on the upper side to float to a certain height in the case is installed horizontally or upwardly Accordingly, a buzzer sound or vibration is selectively generated according to the high frequency signal or the low frequency signal applied to the voice coil on the elastic diaphragm facing the magnet, and the vibration is transmitted to the case through the elastic support piece to enable an alarm. .

1 is a cross-sectional view illustrating a structure of an acoustic alarm device for a communication device according to a conventional example;

Figure 2 is a cross-sectional view for explaining the structure of the vibration / sound generating apparatus for a communication device according to a preferred embodiment of the present invention,

Figure 3 is a schematic perspective view for explaining the elastic support piece of the vibration / sound generating apparatus for a communication device of the present invention shown in Figure 2,

4 is a cross-sectional view illustrating a structure of a vibration / sound generator for a communication device according to another embodiment of the present invention;

5A and 5B are views illustrating a modification of the elastic support piece provided in the vibration / sound generator for a communication device of the present invention.

* Description of the symbols for the main parts of the drawings *

10: case, 11: elastic diaphragm,

12: voice coil, 13: yoke member,

14: magnet, 15: elastic support,

16: signal line.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

2 is a cross-sectional view showing the structure of the vibration / sound generating device for a communication device according to a preferred embodiment of the present invention, Figure 3 is a schematic for explaining the vibration transmission structure of the vibration / sound generating device for a communication device shown in FIG. A perspective view is shown.

In the figure, an elastic diaphragm 11 is provided on an inner upper portion of the case indicated by reference numeral 10, and a plurality of voice coils 12 are fixed on the elastic diaphragm 11. In addition, the yoke member 13 is provided inside the case 10 in a floating state, and magnets 14 corresponding to the voice coil 12 are provided on both sides of the yoke member 13.

Preferably, the yoke member 13 provided with the magnet 14 has one end coupled to the other end of the elastic support piece 15 extending horizontally from the center portion of the vertical direction of the case 10 to perform a vibration function. When the case 10 is formed in a cylindrical shape as illustrated in FIG. 3, the elastic support piece 15 is disposed at both sides or at a predetermined angle (eg, 120 °) of the case 10 so that the yoke member is suspended. The elastic member 13 is elastically supported.

Therefore, according to the vibration / sound generating apparatus for a communication device according to the present invention having such a structure, for example, the signal line 16 connected to the voice coil 12 fixed to the elastic diaphragm 11 is connected to, for example, 2-4 kHz. When a high frequency signal is applied, a buzzer sound is generated. However, when a low frequency signal of 50-100 Hz (or 100-200 Hz) is applied to the voice coil 12 through the signal line 16, the voice coil is used. Low frequency vibration is generated by mutual magnetic action of the magnet 12 and the magnet 14, and the vibration force is transmitted from the yoke member 13 to the case 10 through the elastic support piece 15. do.

Therefore, according to the preferred embodiment of the present invention shown in Figures 2 and 3 coupled to the plurality of elastic support pieces 15 for supporting the yoke member 13 to perform the actual vibration movement in the vertical intermediate position of the case Therefore, sufficient vibration width can be secured.

4 is a view illustrating a structure of a vibration / sound generator for a communication device according to another embodiment of the present invention, wherein the elastic support piece 15 shown in FIGS. 2 and 3 includes a case 10 and a yoke. In contrast to the structure arranged horizontally between the members 13, the vibration / sound generating device shown in Figure 4 is the state in which the elastic support piece 15 inclined the yoke member 13 upward at a constant angle It is formed to support at. Therefore, by such elastic support pieces 15, the elastic support force with respect to the load of the yoke member 13 in which the magnet 14 is provided is further improved.

5A and 5B show a modification of the elastic support piece 15, the elastic support piece 15 shown in FIG. 5A and the elastic support piece 15 shown in FIG. 5B have its elastic support. A certain range of bent portions is formed to reinforce strength and to improve vibration transmission characteristics.

Therefore, according to the present invention, a buzzer sound (acoustic) or vibration is selected in response to a high frequency signal or a low frequency signal applied by supporting a yoke member provided with a magnet facing the voice coil to a certain height by an elastic support piece in the case. Will be generated.

On the other hand, the present invention is not limited to the above embodiments and various modifications and changes can be made within the scope not departing from the gist of the invention.

As described above, according to the vibration / sound generating apparatus for a communication device according to the present invention, a yoke member provided with a magnet facing the voice coil is suspended in a case by a plurality of elastic support pieces at a predetermined height in a case. When a high frequency signal is applied to the buzzer sound, the low frequency signal is applied to the voice coil, and vibration generated by the yoke member suspended by the elastic support piece is applied to the case through the elastic support piece. By transmitting, the acoustic alarm and the vibration alarm in the communication device can be selectively performed.

Moreover, as the plurality of elastic support pieces keep the yoke member floating at a constant height in the case, the possibility of limiting the vibration width due to the load of the yoke member on which the magnet is placed can be excluded.

Claims (4)

A voice coil fixed to the elastic diaphragm in the case, a magnet installed on the yoke member facing the voice coil, and an elastic body for selectively generating vibration in response to a low frequency signal selectively applied to the voice coil. In the vibration / sound generating device for communication devices configured to selectively generate a buzzer sound in response to the vibration when a high frequency signal is applied to the voice coil, The elastic body is a vibration / sound for a communication device, characterized in that the magnet is composed of a plurality of elastic support pieces arranged at regular intervals between the yoke member and the case to float the yoke member to a certain height in the case. Generator. The vibration / sound generating apparatus for communication apparatus according to claim 1, wherein the elastic support piece is horizontally extended between the case and the yoke member. The vibration / sound generator for a communication device according to claim 1, wherein the elastic support piece is extended upward at a predetermined angle from the case toward the yoke member. The vibration / sound generator for a communication device according to claim 2 or 3, wherein a bent portion is formed at a predetermined portion of the elastic support piece.