KR100285124B1 - Multi purpose buzzer - Google Patents

Abstract

Since the W-shaped yoke center is a hollow part, it is connected with a non-magnetic material, and two magnets (first and second magnets) are installed between the inner and outer walls, thereby reducing the magnetic force and doubling the sound pressure and vibration. And a multipurpose buzzer that can simultaneously act as a speaker.

Description

Multi purpose buzzer

The present invention relates to a multi-purpose buzzer that plays the role of a buzzer, a vibrator, and an earphone and a speaker (receiver) of an electronic product in one device.

Conventional buzzers, vibrators and speakers (receivers) all have a defect in that the structure is mounted separately in electronic products, such as the size of the structure of electronic products such as mobile phones or PCS becomes large and heavy.

As shown in FIG. 2, the magnet ring 3 is located near the outer wall between the inner wall 10 and the outer wall 11 to which the center 15 of the magnet yoke 7 having a W shape is connected. The coil ring 5 is positioned near the inner wall, and the magnet yoke 7 and the magnet ring 3 and the diaphragm 4 connected to the coil are mounted on the coil ring 5, and the There is a configuration in which the horizontal springs (8) and (8 ') are mounted on the top and bottom so that the buzzer, the vibrator, and the receiver (receiver) roles at the same time in a single device. There was a flaw in not acting properly.

The present application compensates for the drawbacks of different configurations and mountings of the buzzer, the vibration device and the speaker (receiver) in the conventional electronics as described above, and acts as a buzzer, the vibrator and the receiver in a single device, while also capable of powerful operation. Its purpose is to provide a versatile buzzer for electronic products that minimizes volume and weight while serving as a high sound pressure, strong vibration, and speaker with a lower current than existing products. Detailed description with reference to the following.

1 is a cross-sectional view of the multi-purpose buzzer according to the present invention.

2 is a cross-sectional view of a conventional multipurpose buzzer.

Explanation of symbols on the main parts of the drawings

1: Lead terminal 2,2 ': Spring

3: first magnet ring 4: diaphragm

5: coil 3a: second magnet ring

7: magnet yoke 8: connecting plate of nonmagnetic material

9: housing of buzzer 10,11: inner and outer walls of yoke

15: center

Diaphragm (vibration plate) 4 placed on top of the magnet yoke 7 in the housing 9 of the buzzer with lead terminal 1, coil ring 5 external to the yoke dole, magnet ring (3) and the buzzer composed of the director (6), the center of the yoke (7) consists of only the U-shaped inner and outer walls (10) (11) so that the hollow portion 12 is formed by the hollow portion ( 12) connect the bottom with a connecting plate 8 of nonmagnetic material, and then attach the first magnet ring 3 and another second magnet ring 6 to the inner surface of the inner and outer walls 10 and 11. The coil ring 5 is installed between the first and second magnet rings 3 and 6 so as to be connected to the diaphragm 4 up and down, and the leaf spring 2 or the bend is respectively formed on the upper and lower surfaces of the magnet yoke 7. The spring 2 'consists of a horizontal or vertical contact.

The multipurpose buzzer of the present invention configured as described above can selectively act as a vibrator, a buzzer, and a receiver according to a known frequency modulation in one structure, so that a vibrator device, a buzzer, and a speaker (receiver) device need to be provided separately, respectively. Since it is possible to play all the above roles (operation) as a device without the advantage that the appearance of the electronics can be reduced to a minimum volume and the weight can also be reduced to a minimum. For example, when the input frequency of the coil is 130HZ, the vibrator operates. When the frequency is 2800HZ, which is the resonant frequency of the buzzer, the buzzer operates. Light weight, small size, and thinness are possible, and therefore, electronic products equipped with these products have the advantage of being able to produce light weight, small size, and thin size.

In particular, the present invention is characterized in that the magnet (magnet) is composed of first and second magnet rings. In general, in a magnetic circuit composed of a magnet and a yoke, as the length of the magnet gap and the length of the yoke (iron) increase, the strength of the magnetic force in the gap decreases, and acts on the coil (voice coil) located in the gap. Since the force in the vertical direction is proportional to the product of the current flowing through the coil and the magnetic force acting on the coil, a strong in-gap magnetic force is required to generate a strong diaphragm vibration.

Therefore, in the buzzer of the present application, since the first and second magnet rings 3 and 3a are dual, the amplitude of the diaphragm (vibration tube) oscillated by the force of the double magnet ring is increased, so that the sound pressure (decibel) is proportionally increased. Will increase. In addition, in the magnetic circuit of the conventional buzzer, since the upper part of the center of the yoke is integrally connected, some loss of magnetic force lines is expected in the central part, whereas in the magnetic circuit of the present invention, the central part and the outer wall of the yoke, Since the bottom of the inner and outer walls 10 and 11 is connected to the non-magnetic connector tube 8, there is almost no loss of magnetic force so that the magnetic force of the magnet can be maintained to the maximum, and the two magnets face each other. Since it is arranged to see, the strength of the magnetic field is further increased.

The multipurpose buzzer of the present invention is composed of two first and second magnets, so that the vibration or the sound pressure is increased, thereby maximizing the operation of the vibration buzzer and the speaker.

Claims (1)

A magnet yoke 7 in the housing 9 of the buzzer with a lead terminal 1, a diaphran 4 lying thereon, a coil ring 5 enclosed in the yoke, a first magnet ring 3) and the buzzer composed of the protector 6, the center of the yoke (7) consists of only the U-shaped inner and outer walls 10, 11 so that the hollow portion 12 is formed by the hollow portion 12 Connect the bottom with a non-magnetic connecting plate (8), and then attach the first magnet ring (3) and another second magnet ring (3a) on the inner surface of the inner and outer walls, and the first and second magnet rings (3). The coil ring 5 is installed between the diaphragm 4 and the upper and lower sides of the yoke 7 and the leaf spring 2 or the bending spring 2 'is horizontal or vertical, respectively. Multipurpose buzzer, characterized in that it is configured to be installed in contact with.