JPH10263476A - Vibration generating device for alarming and its manufacturing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a highly reliable device free from the possibilities of imperfect contact or wire breakage due to vibratory action by electrically connecting the connecting parts of a first and a second outer connection land and cutting/ removing the connecting parts after assembly. SOLUTION: First outer connection lands 76, 77 which become signal input terminals are formed on an outer annular part 71, and these first outer connection lands 76, 77 are formed by a first connecting part 78. In addition, a second connecting part 79 is formed on a part of the outer annular part 71, and is formed oppositely to the first connecting part 78 across the first outer connecting land 77. After that, the first and the second connecting part 78, 79 to which a hatching process is applied, are cut off from each other, and a first coil connection land 80 is electrically connected to the first outer connection land 76 and a second coil connection land 81 is electrically connected to the first outer connection land 77 through a third connecting part 82 is such a manner that these connections are independent of each other. Consequently, the workability for assembly can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a notifying device used for a portable communication device such as a cellular phone or a pager, and more particularly to a notifying vibration configured to notify a user of information by vibration. It concerns the device.

[0002]

2. Description of the Related Art Small devices such as portable communication devices are provided with, for example, notification means for notifying an incoming call, notification of a predetermined time, and the like. Many.

[0003] However, in recent years, in consideration of surrounding people, not only a notifying means by sound but also a notifying means by vibrating equipment are built in, and both notifying means are used depending on the situation, or The number of small devices that selectively use any one of the notification means is increasing. For example, what is shown in FIG. 5 is a prior art of such a conventional mobile phone. In FIG. 5, 101 is a mobile phone main body, 102 is an antenna, 103 is a receiving speaker, 104
Is a transmission microphone, 105 is a display, and 106 is various operation buttons. A ringer speaker 107 for notifying the incoming call by sound and a vibration motor 108 for notifying the incoming call by vibration are arranged on the mobile phone body 1. In such a conventional technique, it is common that the sound notification means and the vibration notification means are respectively built in the device. In this case, two separate notification means are required, which hinders downsizing of the device. There was a problem of doing.

[0004] For this reason, the present applicant has invented a vibration generator for notification having both functions of notification by sound and notification by vibration, and has already filed an application as Japanese Patent Application No. 8-168785.

FIGS. 6 and 7 show an exploded perspective view and a sectional view of the notification vibration generator according to the prior application. As shown in the figure, this prior art is based on a cylindrical lower case 110, a magnetic circuit 120, a coil 130, and a diaphragm 14.
0, an upper case 160 in which a cushioning material 150 and a sound output port 161 are formed. As shown in FIG. 7, the magnetic circuit 120 includes a permanent magnet 121 and two yokes 122 and 123 provided with the permanent magnet 121 interposed therebetween, and is adhered and fixed to the bottom surface of the lower case 110. The diaphragm 140 is made of an elastic member such as a thin metal plate,
The first spring body 141, the second spring body 142, the annular part 143, and the vibrating part 144 are integrally formed. First spring body 1
The coil 130 is bonded and fixed to the annular portion 143 connecting the first spring body 41 and the second spring body 142, and the diaphragm 140
When the coil 130 is sandwiched and fixed between the upper and lower cases 110 and 160, the coil 130 is fixed to the two yokes 122 and 123.
Located in the gap formed by 131, 13
Reference numeral 2 denotes a conductor drawn from the coil 130.

In this prior art, the conductor 13
By applying a signal of a predetermined frequency to the coil 130 through the first and the 132, notification by sound or vibration can be selectively performed. That is, the coil 3
To the coil 130 and the diaphragm 140
Is vibrated to collide with the upper and lower cases 110 and 160, or the vibration is transmitted to the cases 110 and 160 by the restoring force of the first spring body 141 to vibrate the entire apparatus, whereby the notification by vibration is performed. By applying another signal to the coil 130, the diaphragm 140
By vibrating only the vibrating section 144, the air is vibrated, and as a result, notification by sound is performed.

In the prior art, the vibrating vibration of the coil 130 causes the conductors 131, 1
32 also violently and vibrates repeatedly, so that there was a problem that the insulating coating of the conductor was peeled off or the wire was broken.
In addition, since the conductors 131 and 132 are directly drawn from the coil 130, there is a problem that workability when incorporating this device into a communication device is poor. In order to further improve these problems, a method of using a thicker and durable electric wire or a flexible substrate and soldering them to the coil end of the coil 130 to make an electrical connection is also conceivable. Is not preferred because of adverse effects on the vibration characteristics of the movable part, obstacles to downsizing, or an increase in workability.

[0008]

SUMMARY OF THE INVENTION The present invention is to improve the reliability and assembly workability of the above-described notification vibration generator.

[0009]

SUMMARY OF THE INVENTION The present invention provides a diaphragm having at least two spring portions providing different natural frequencies, a coil fixed to the diaphragm, and a permanent magnet for driving the coil. And a magnetic circuit including: a vibration plate formed of a conductive member, and first and second coil connection lands connecting terminals of a coil; and a first coil connection land. A first external connection land that is electrically connected and externally supplied with electricity;
A second external connection land electrically connected to the second coil connection land for externally supplying power, and a connection portion electrically connecting the first and second external connection lands and being cut off after assembly And characterized in that:

[0010] Further, the notification vibration generating device according to the present invention comprises:
It has a case body for accommodating the diaphragm, the coil and the magnetic circuit, and the connecting portion is provided at a position protruding from the outer shape of the case body.

Further, in the vibration generating device for notification according to the present invention, by cutting off the connecting portion, the electric connection between the first coil connection land and the first external connection land, and the second coil connection land and the second external connection land is reduced. Characteristic connection is interrupted.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a notification vibration generator according to the present invention will be described below.

FIG. 1 is a cross-sectional view showing a notification vibration generating apparatus according to the present invention. In FIG. 1, reference numeral 1 denotes a cylindrical lower case, 2 denotes an upper case having a sound emission port 2a, 3 denotes a coil,
Is a permanent magnet, 5 is a lower yoke, 6 is an upper yoke, and 7 is a diaphragm. Basically, the configuration is the same as that of the above-mentioned prior art. The coil 3 fixed to the diaphragm 7 is arranged in the gap of the magnetic circuit constituted by the permanent magnet 4 and the upper and lower yokes 5 and 6. By adding a predetermined signal to the signal No. 3, notification is made by sound or vibration.

FIG. 2 shows the diaphragm 7. In the figure, 71 is an outer annular portion, 73 is an inner annular portion,
These annular portions 71 and 73 are connected by a first spring portion 72 set to have rigidity for giving a natural vibration for generating vibration. Reference numeral 75 denotes a vibrating portion, and a second spring portion 74 set to have rigidity for giving a natural vibration for generating a sound.
Is connected to the inner annular portion 73. The outer annular portion 71 has a first external connection land 7 serving as a signal input terminal.
6 and 77 are formed, and these first external connection lands 7 are formed.
6 and 77 are connected by a first connecting portion 78. 7
Reference numeral 9 denotes a second connecting portion formed on a part of the outer annular portion 71, and the second connecting portion 79 is formed to face the first connecting portion 78 with one second external connection land 77 interposed therebetween. Is done.
Further, reference numerals 80 and 81 denote first and second coil connection lands, respectively. The first coil connection land 80 is formed integrally with the inner annular portion 73, and the second coil connection land 81 is formed by a second external connection land. It is formed integrally with the third connecting portion 82 pulled out from the intermediate position between the connecting land 77 and the second connecting portion 79 and is provided at a position facing the first coil connecting land 80 with the vibrating portion 75 interposed therebetween. .

Next, the assembly of the notification vibration generating device according to the present invention will be described with reference to FIGS. First, as shown in FIG. 3, after fixing the coil 3 on the inner annular portion 73 of the diaphragm 7 with an adhesive or the like, the two coil terminals 3a and 3b of the coil 3 are connected to the first and second coil connections, respectively. It is soldered to the lands 80 and 81 and fixed electrically and mechanically.
In this state, the first external connection lands 76, 77,
The first and second coil connection lands 80, 81 are all electrically connected.

Thereafter, the permanent magnet 4 and the upper and lower yokes 5,
The diaphragm 7 to which the coil 3 is fixed is fixed to the lower case 1 to which the assembly 6 is fixed, and the upper case 2 is further covered and fixed by adhesion. FIG. 4 is a diagram of this state viewed from above.

Then, in the vibration generating device for notification assembled in this manner, the first and second connecting portions 78 and 79 with hatching are cut off as shown in FIG. As a result, the first coil connection lands 80 are electrically connected to the first external connection lands 76, and the second coil connection lands 81 are electrically connected to the second external connection lands 77 via the third connection portions 82. As a result, the coil 3 is energized by connecting the energizing section 83 to the external connection lands 76 and 77 as shown in the drawing, and desired energization driving can be performed.

[0018]

As described above, in the notification vibration generating apparatus according to the present invention, the electrical connection for energizing the coil is performed by using a part of the vibration plate. It is possible to realize a highly reliable device without fear of failure or disconnection. Further, it can be realized with a very simple configuration, and the assembling workability is extremely good.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a notification vibration generator according to the present invention.

FIG. 2 is a diagram showing a diaphragm of the notification vibration generator according to the present invention.

FIG. 3 is a view showing an assembled state of the notification vibration generating device according to the present invention.

FIG. 4 is a top view showing a notification vibration generating device according to the present invention.

FIG. 5 is an external perspective view showing a conventional portable communication device.

FIG. 6 is an external perspective view showing a notification vibration generating device according to a conventional technique.

FIG. 7 is a cross-sectional view showing a notification vibration generating device according to the related art.

[Explanation of symbols]

 Reference Signs List 1 lower case 2 upper case 2a sound outlet 3 coil 3a coil terminal 3b coil terminal 4 permanent magnet 5 lower yoke 6 upper yoke 7 diaphragm 71 outer annular portion 72 first spring portion 73 inner annular portion 74 second spring portion 75 vibration Part 76 first external connection land 77 second external connection land 78 first connection part 79 second connection part 80 first coil connection land 81 second coil connection land 82 third connection part 83 conducting part

Claims (4)

[Claims] 1. A notification having a diaphragm having at least two spring portions providing different natural frequencies, a coil fixed to the diaphragm, and a magnetic circuit including a permanent magnet for driving the coil. In the vibration generating device for use, the diaphragm is formed of a conductive member, and first and second coil connection lands for connecting terminals of the coil, and are electrically connected to the first coil connection lands. A first external connection land for more energization, a second external connection land electrically connected to the second coil connection land for external energization, and the first and second external connection lands. A notification vibration generating device comprising: a connecting portion that is electrically connected and cut off after assembly. 2. The vibration generating device for notification according to claim 1, further comprising a case body for housing the diaphragm, the coil, and the magnetic circuit, wherein the connecting portion is provided at a position protruding from an outer shape of the case body. A vibration generator for notification. 3. The vibration generating device for notification according to claim 2, wherein the connecting portion is cut off so that the first coil connecting land and the first external connecting land, and the second coil connecting land and the second external connecting land. A vibration generator for notification, wherein an electrical connection with the device is interrupted. 4. A notification having a diaphragm having at least two spring portions providing different natural frequencies, a coil fixed to the diaphragm, and a magnetic circuit including a permanent magnet for driving the coil. First and second coil connection lands for connecting the terminals of the coil, and first external connection lands electrically connected to the first coil connection lands for supplying power from outside. And a second external connection land electrically connected to the second coil connection land for conducting electricity from the outside, and a connecting portion for electrically connecting the first and second external connection lands. The vibration plate is formed of a conductive member having elasticity so that the vibration plate is fixed to the vibration plate, and a terminal of the coil is electrically connected to the first and second coil connection lands. Board A method for manufacturing a vibration generator for notification, comprising: housing the coil, the magnetic circuit, and the magnetic circuit in a case; and cutting off the connecting portion.