CN2728148Y

CN2728148Y - A sound box

Info

Publication number: CN2728148Y
Application number: CN 200420070917
Authority: CN
Inventors: 赵海生
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-06-24
Filing date: 2004-06-24
Publication date: 2005-09-21
Anticipated expiration: 2014-06-24

Abstract

The utility model relates to a sound box, which comprises a horn and a box body; the horn comprises a shell, a ferromagnet, coils, a coil bobbin, a locating film, and a contact piece. The middle of the shell is equipped with a flute, and a magnet is fixed inside of the flute; the ferromagnet and the inner side of the flute form a uniform gap; the coil is circled with the coil frame which is connected with one end of the locating film, and the other end of the locating film is connected with the shell to make the coil frame arranged on the center of the gap; the top of the coil frame is connected with one side of the contact piece, and the other side of the contact piece shows a plane and is fixed on the inner wall of the box body by sticking together; the box body is equipped with wire clamps, and metallic wires on both ends of the coils are respectively connected with joints on both ends of the wire clamps. The utility model has the advantages of simple structure, easy installation, dust prevention, moisture protection, low cost, good sound quality, and it can be widely applied to the daily life of people.

Description

A kind of audio amplifier

Technical field

The utility model relates to audible device, relates in particular to a kind of audio amplifier.

Background technology

At present, often pursue the good and inexpensive audio amplifier equipment of tonequality in people's daily life, can improve the quality of life, the enjoyment of the life that indulges in luxuriousness to one's heart's desire.The general employing of existing audio amplifier places wooden casing or plastic box with loudspeaker, utilizes the vibration basin body vibration on the loudspeaker, thereby sounds.Existing loudspeaker box structure more complicated for improving tonequality, need be carried out special design to casing toward contact, also needs to adopt dustproof constructions such as dust cover, thereby the cost of audio amplifier is increased, thereby has reduced competitiveness of product.

The utility model content

Technical problem to be solved in the utility model is: overcome the high deficiency of existing audio amplifier cost, provide a kind of tonequality good and low-cost audio amplifier, thereby bring more material benefit for the consumer.

The utility model is to solve the problems of the technologies described above the technical scheme that is adopted to be:

This audio amplifier comprises loudspeaker and casing, and described loudspeaker comprise housing, magnet, coil, coil rack, positioning film and contact chip, and described housing middle part is provided with groove, and magnet is fixed in this groove, the uniform slit of the inboard formation of magnet and groove; Described coil is wrapped on the coil rack, and coil rack is connected with an end of described positioning film, and the other end of positioning film then is connected with described housing, makes coil rack be set up in center, described slit; The top of coil rack links to each other with described contact chip one side, and the contact chip opposite side is the plane, fits to be fixed on the described cabinet wall; Also be provided with wire clamp on the casing, the metal wire at coil two ends links to each other with two end connectors of this wire clamp respectively.

Described casing is the cavity of a sealing, by metal shell and airtight formation of end cap of being located at the housing two ends.Metal shell is square aluminium alloy cavity, and wire clamp is arranged on the wherein end cap of casing.The centering diaphragm is the diaphragm that the braid of bellows-shaped forms, and the inboard slit that forms of magnet and groove is circular.

The beneficial effects of the utility model are: the principle of the utility model utilization vibration pronunciation, the vibration in magnetic field behind the coil electricity is delivered to metallic cavity by contact chip, and metallic cavity is amplified sound, and can keep good sound quality.Have simple in structure, easy for installation, dust and moisture, cost is low, tonequality is good advantage, can be widely used in daily life.

Description of drawings

Fig. 1 is the utility model loudspeaker operation principle schematic diagram;

Fig. 2 is the utility model horn housing body structure schematic diagram;

Fig. 3 is the utility model loudspeaker stereograms;

Fig. 4 is the utility model sound box package assembly schematic diagram;

Fig. 5 is a side end cap structural representation of the utility model audio amplifier.

Embodiment

With embodiment the utility model is described in further detail with reference to the accompanying drawings below:

As Fig. 1, Fig. 2, Fig. 3, Fig. 4 and shown in Figure 5, the utility model provides a kind of tonequality good and low-cost audio amplifier, this audio amplifier comprises loudspeaker 10 and casing 20, loudspeaker 10 comprise housing 11, magnet 12, coil 13, coil rack 14, positioning film 15 and contact chip 16, housing 11 middle parts are provided with circular groove, circular magnet 12 is fixed in this groove, magnet 12 and the uniform circular slit 111 of the inboard formation of groove; Coil 13 is wrapped on the coil rack 14, coil rack 14 can adopt paper material, its middle part is connected with an end of positioning film 15, centering diaphragm 15 is the diaphragm that the braid of bellows-shaped forms, the other end of positioning film 15 then is connected with housing 11, makes coil rack 14 be set up in the center in slit 111; The top of coil rack 14 links to each other with contact chip 16 1 sides, and contact chip 16 opposite sides are the plane, fits to be fixed on the inwall of casing 20; Casing 20 is the cavity of a sealing, by metal shell 21 and

end cap

22,23 airtight formation of being located at housing 21 two ends.Metal shell 21 adopts square aluminum alloy materials, casing 20 wherein also be provided with wire clamp 24 on the end cap 22, the metal wire at coil 13 two ends links to each other with two end connectors of this wire clamp 24 respectively.

Like this as long as clamp two the end of a thread of tone frequency channel wire on wire clamp 24, the other end of tone frequency channel wire is plugged on pronunciation equipment such as TV, VCD, DVD, the power amplifier etc., can make audio amplifier send the good sound of tonequality, is enough to satisfy the requirement of user to tonequality.During work, because coil electricity, meeting up-down vibration in magnetic field, because the soft location of positioning film, and coil can be vibrated in the slit to greatest extent, thereby drive the contact chip vibration,, thereby make metallic cavity amplify sound and tonequality is not exerted an influence because contact chip and metallic cavity plane fit tightly.

The utlity model has simple in structure, easy for installation, dust and moisture, cost is low, tonequality is good advantage, can be widely used in daily life.Those skilled in the art do not break away from essence of the present utility model and spirit, can there be the various deformation scheme to realize the utility model, the above only is the preferable feasible embodiment of the utility model, be not so limit to interest field of the present utility model, the equivalent structure that all utilization the utility model specifications and accompanying drawing content are done changes, and all is contained within the interest field of the present utility model.

Claims

1, a kind of audio amplifier, comprise loudspeaker and casing, it is characterized in that: described loudspeaker comprise housing, magnet, coil, coil rack, positioning film and contact chip, and described housing middle part is provided with groove, described magnet is fixed in this groove, the uniform slit of the inboard formation of magnet and groove;

Described coil is wrapped on the coil rack, and coil rack is connected with an end of described positioning film, and the other end of positioning film then is connected with described housing, makes coil rack be set up in center, described slit;

The top of described coil rack links to each other with described contact chip one side, and described contact chip opposite side is the plane, fits to be fixed on the described cabinet wall;

Also be provided with wire clamp on the described casing, the metal wire at coil two ends links to each other with two end connectors of this wire clamp respectively.

2, audio amplifier according to claim 1 is characterized in that: described casing is the cavity of a sealing, by metal shell and airtight formation of end cap of being located at the housing two ends.

3, audio amplifier according to claim 2 is characterized in that: described metal shell is square aluminium alloy cavity.

4, according to claim 1,2 or 3 described audio amplifiers, it is characterized in that: described wire clamp is arranged on the wherein end cap of described casing.

5, audio amplifier according to claim 4 is characterized in that: the diaphragm that the braid that described centering diaphragm is a bellows-shaped forms.

6, audio amplifier according to claim 4 is characterized in that: the inboard slit that forms of described magnet and groove is for circular.