CN2363450Y

CN2363450Y - Aluminium band type tweeter

Info

Publication number: CN2363450Y
Application number: CN 98246922
Authority: CN
Inventors: 张所巨
Original assignee: HAIHUANG GROUP CORP PENGLAI
Current assignee: HAIHUANG GROUP CORP PENGLAI
Priority date: 1998-12-02
Filing date: 1998-12-02
Publication date: 2000-02-09
Anticipated expiration: 2008-12-02

Abstract

The utility model provides a treble loudspeaker in an aluminum band type, which is composed of a panel, a vibrating diaphragm, a magnet, a conductive plate, an impedance matcher, etc. The utility model is characterized in that the vibrating diaphragm which is made of a pure aluminum film into a band-shaped wave shape is arranged at the front end of a loudspeaker; the impedance matcher which is made of a square ferritic iron core has the impedance of 4 omega and the rated power of 80W; the magnet is made from a strip-shaped N40 Nd-Fe-B magnetic material. The loudspeaker adopts unique design structure, effectively integrating a voice coil and the vibrating diaphragm; simultaneously due to the adoption of a rectangular magnetic circuit system, the loudspeaker forms powerful and uniform driving force, and effective full-frequency range is extended from 2000Hz to 40000Hz; sensitivity reaches as high as 105dB/1W/1M, satisfying the requirements of music fans.

Description

The aluminium band type high pitch loudspeaker

The utility model relates to stereo set, particularly a kind of aluminium band type high pitch loudspeaker.

Common ball top, awl benzvalene form high pitch loudspeaker, its working method is to be done reciprocating linear motion under the constraint of periphery fixed by the voice coil loudspeaker voice coil promotion vibrating diaphragm or the basin that shakes.Therefore its sensitivity can only be below 91dB, and the amplitude-frequency scope is between 1000Hz-20000Hz.In the process of replay music, tiny music detail can't be explained clearly, big dynamic distortion is ear-piercing, and in addition, existing belt and flat film high pitch loudspeaker are because of the shape at vibrating diaphragm, and the development aspect of the coupling of impedance and material is not efficiency solution all.Thereby existing sensitivity low, drawback such as impedance is low is difficult to apply.Next is that the operation principle of existing high pitch loudspeaker is when passing through alternating current in the voice coil loudspeaker voice coil that is in the magnetic field, will be subjected to the effect of power.Therefore have Hz-KHz narrow (in the 1000Hz-20000Hz scope), high frequency characteristics is poor, and distortion is big, and sensitivity low (in 90dB/1W/1M) etc. are not enough.Limited the playback of music detail, and efficient is also relatively low, and power amplifier is had relatively high expectations, its key technical index has not satisfied the more and more higher requirement of users.

The purpose of this utility model provides and a kind of voice coil loudspeaker voice coil and vibrating diaphragm is united two into one, can make the full rate effective range of loud speaker extend to 40000Hz from 2000Hz always, sensitivity is up to 105dB/1W/1M, and the transient state reflection is fast, a kind of aluminium band type high pitch loudspeaker that parsing power is high.

The purpose of this utility model is achieved by the following scheme: be made of panel, vibrating diaphragm, sound-absorbing pad, yoke body, magnet, conductive plate, impedance matching box etc., wherein said vibrating diaphragm is that pure aluminium film is made, thickness is 0.007mm-0.01mm, width is 7mm-9mm, length is 60mm-120mm, vibrating diaphragm be shaped as banded waveform, be arranged on the front end of loud speaker, be positioned at the back of panel; Said impedance circle orchestration adopts openning shape ferrite iron core to make, primary winding adopts the enamel covered wire coiling of φ 0.8mm-1.0mm, and the number of turn is 54 circles, and secondary winding transformer adopts the flat aluminium strip of 25mm * 0.2mm, the number of turn is 7 circles, and this adaptation is arranged on the rear end of loud speaker; Said magnet is that strip N40 neodymium-iron-boron magnetic material is made, and the magnetic gap magnetic field intensity is 5000-6000 Gauss.

Advantage of the present utility model is voice coil loudspeaker voice coil and vibrating diaphragm are united two into one, and it is wavy to have adopted the ultra-thin fine aluminium vibrating diaphragm of ultralight to be made into, and except the contact of conduction, the whole unsettled free state that is in is not subjected to any pining down.Owing to adopt the N40 neodymium iron boron magnetic circuit system of rectangle, formed powerful and uniform actuating force simultaneously.Be the low problem of resolved impedance spectroscopy, mated accurate impedance transformation device.Therefore, the full rate effective range of this loud speaker extends to 40000Hz from 2000Hz always, and its sensitivity is up to 105dB/1W/1M.Owing to adopted the design of unique internal structure, make the transient state reflection fast, parsing power height can be explained the details of music clearly during thin volume.Big dynamically the time radiance glitter and not ear-piercing, satisfied the requirement of the music public fully to music playback.

Below in conjunction with accompanying drawing the utility model is illustrated.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the decomposing schematic representation of Fig. 1.

As shown in Figure 1 and Figure 2: constitute jointly by panel 1, lining net 2, liner 3, vibrating diaphragm 4, sound-absorbing pad 5, liner 6, side's pad 7, conductive plate 8, yoke body 9, magnet 10, impedance matching box 11, coil box 12.

Said vibrating diaphragm 4 adopts pure aluminium film to make, thickness is 0.007mm-0.01mm, width is 7mm-9mm, and length is 60mm-120mm, vibrating diaphragm be shaped as banded waveform, be arranged on the front end of loud speaker, be positioned at the back of panel, vibrating diaphragm and voice coil loudspeaker voice coil unite two into one, two fixed ends, being oscillating mass, is again electrical conductor.As handing over high electric current to pass through, shake body along transverse vibration to promote air vibration sounding.The essence of the body that shakes vibration is elastic vibration, because the body ultra-thin and ultra-light that shakes, its vibration frequency range is wideer, and from 2000Hz to 40000Hz, transient state is better, resolves Li Genggao.Be the solution low contradiction of body impedance of shaking, impedance matching box 11 has adopted openning shape ferrite iron core to make, primary winding adopts the enamel covered wire coiling of φ 0.8mm-1.0mm, the number of turn is 54 circles, secondary winding transformer adopts the flat aluminium strip of 25mm * 0.2mm, and the number of turn is 7 circles, and the rated impedance of impedor is 4 Ω, rated power is 80W, to adapt to the output impedance requirement of common power amplifier.Magnet of the present utility model has adopted rectangular strip N40 neodymium-iron-boron magnetic material to make, and the magnetic gap magnetic field intensity is 5000 to 6000 Gausses.This magnetic circuit system has formed even and powerful actuating force, can make sensitivity up to 105dB/1W/1M.

Claims

1, a kind of aluminium band type high pitch loudspeaker, by panel (1), vibrating diaphragm (4), sound-absorbing pad (5), yoke body (9), rectangular magnet (10), conductive plate (8) impedance matching box formations such as (11), it is characterized in that: said vibrating diaphragm (2) is made for pure aluminium film, thickness is 0.07mm-0.01mm, width is 7mm-9mm, and length is 60mm-120mm, vibrating diaphragm be shaped as banded waveform, be arranged on the front end of loud speaker, be positioned at the back of panel; Said impedance matching box (7) adopts openning shape ferrite iron core to make, primary winding adopts the enamel covered wire coiling of φ 0.8mm-1.0mm, the number of turn is 54 circles, secondary winding adopts the flat aluminium strip of 25mm * 0.2mm, and the number of turn is 7 circles, and this adaptation is arranged on the rear end of loud speaker, impedance 4 Ω, rated power 80W, said magnet (10) is made for strip N40 neodymium-iron-boron magnetic material, and the magnetic gap magnetic field intensity is 5000-6000 Gauss.

2, loud speaker according to claim 1 is characterized in that: length and width, the thickness of said vibrating diaphragm are respectively: length is 90mm, and width is 7mm, and thickness is 0.01mm.