CN206077665U

CN206077665U - Audio amplifier

Info

Publication number: CN206077665U
Application number: CN201620931701.1U
Authority: CN
Inventors: 万义强
Original assignee: Guangzhou Yun Qiang Electronics Co Ltd
Current assignee: Guangzhou Yun Qiang Electronics Co Ltd
Priority date: 2016-08-24
Filing date: 2016-08-24
Publication date: 2017-04-05
Anticipated expiration: 2026-08-24

Abstract

The utility model discloses a kind of audio amplifier, which includes casing and the speaker on the casing, and the casing includes outer container and the interior case in the outer container, and the interior case is made up of wood materials, the outer container is made of plastics, and speaker is suspended by audio amplifier using electric magnet.The outer container of interior case and plastics of the above-mentioned audio amplifier by setting wood materials, can both ensure the tonequality of audio amplifier, be easy to again for the outward appearance of audio amplifier to be fabricated to required form, and it is less to resonate, and the sound timbre for sending is preferable.

Description

Audio amplifier

Technical field

This utility model is related to sound system technical field, more particularly to a kind of audio amplifier.

Background technology

Audio amplifier is last in whole sound system flow process, is also a most important composition, and its playing quality is to whole The impact of individual systematic function greatly, estimates according to professional person that contribution of the audio amplifier to whole sound system accounts for whole system More than 30%.Audio amplifier itself includes shadow of the quality of voice box casing, speaker and frequency divider, speaker and frequency divider to tonequality Sound accounts for 70%, and impact of the voice box casing to tonequality accounts for 30%, because impact of the speaker with frequency divider to tonequality is larger, institute All it is to improve speaker and frequency divider with prior art most people, and few people goes to improve voice box casing.

But voice box casing is also had a very big impact to the tonequality of audio amplifier, wherein topmost impact is audio amplifier resonance, Again because the speaker of prior art is mainly fastened on the frame of speaker on the front panel of voice box casing by screw, i.e., Frame is directly to contact with front panel, so the vibration produced when speaker operation can be direct by supporting constructions such as frame It is delivered on the front panel of voice box casing, and then makes voice box casing that resonance to occur, also there are some audio amplifiers to pass through support by speaker It is fixed on other panels, directly can transfers vibrations on panel fixed thereto during such speaker operation so that sound There is resonance in tank shell so that the sound timbre that audio amplifier sends is poor.

Existing audio amplifier makes sound box generally using timber, but as timber lacks plasticity, therefore, it is difficult to Various complicated shapes are produced, causes sound box shape single.And, wooden casing is generally formed by polylith wood board splicing, Easily cause casing gas leakage.And sound box is made using the stronger plastics of plasticity, then the tonequality of audio amplifier is poor.

Utility model content

The purpose of this utility model is to provide a kind of reduction to resonate, the preferable audio amplifier of sound timbre.

The technical solution adopted in the utility model is as follows：

A kind of audio amplifier, including casing, controller and the speaker on the casing are designed, the casing includes one The outer container of molding and the interior case in outer container, the interior case are made up of wood materials, and the outer container is made of plastics, described interior Case and outer container are brought into close contact；

The opening through outer container and interior case is offered on the casing, the interior case includes hollow cavity, the audio amplifier Also include the phase-reversing tube on casing, described phase-reversing tube one end is exposed in the air outside casing, and the other end is stretched in cavity；

The casing includes front panel, rear board, left panel, right panel, base plate and top board, before the opening is arranged on Panel；

The speaker is provided with dust cover and magnet, is provided with every magnetosphere between the dust cover and magnet, the magnet It is set on magnetosphere, is equipped with the left panel, right panel, base plate and top board for adsorbing the electric magnet of magnet, often Individual electric magnet is provided with a magnetic field sensor for induced field Strength Changes, and the electric magnet and magnetic sensors are equal It is electrically connected with the controller, and is also fixed by flexible sealing material sealing between speaker and front panel, and on the base plate A support for the support speaker when electric magnet does not work is provided with, the frame bottom hollow out is available for aforesaid paraphase Pipe through.

Further, magnet can also be made shell-like, so preferably can be coordinated with multiple electric magnet so that speaker During suspension, stress is than more uniform.

Further, the center of the support is provided with the magnetic flux that the magnetic force produced for the electric magnet on base plate passes through Hole.

When work of electromagnet, speaker can suspend in the presence of electromagnetic force, without effect between speaker and support Power；When electric magnet quits work, loudspeaker position does not change, but speaker can be withstood support by support.

Further, the pedestal upper end face is provided with pressure transducer, and the pressure transducer is electrically connected with controller Connect, when speaker operation, pressure transducer has detected pressure, then it represents that speaker is not suspended completely, now can be with Corresponding electric magnet is controlled by controller so that speaker is suspended completely.

The utility model has the advantage of, the outer container of interior case and plastics of the above-mentioned audio amplifier by setting wood materials both may be used Ensure the tonequality of audio amplifier, be easy to again for the outward appearance of audio amplifier to be fabricated to required form, integrally formed outer case is difficult gas leakage, passes through Speaker is suspended by electric magnet, and front panel of such speaker only by flexible sealing material with voice box casing has annexation, The vibration that i.e. speaker is produced is delivered on voice box casing without going past the part being directly connected to, and can only pass through flexible material It is delivered on front panel, so passing to past vibration can be substantially reduced by flexible material, so will not make during speaker operation There is resonance in voice box casing, the sound timbre that such audio amplifier sends preferably, and using magnetic sensors detecting magnetic field, so Stability that can be when preferably controlling loudspeaker suspends so that speaker is not easy shake when suspending, and magnet with raise one's voice It is provided between device every magnetosphere, so can effectively prevents the magnetic field that electric magnet is formed from affecting the work of speaker itself, and And a support is set, so when not being powered, i.e., when electric magnet does not work, support can be played by support and be raised one's voice The function of device, and during magnet switching electricity, the position of speaker is constant, i.e., in the unexpected power-off of electric magnet, i.e. speaker Speaker damage will not be caused because there is range difference when being changed into by support holding state from suspended state.

Description of the drawings

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

Have in FIG：

1 --- outer container；2 --- interior case；3 --- phase-reversing tube；4 --- dust cover；5 --- electric magnet；6 --- support； 7 --- every magnetosphere；8 --- magnet；9 --- flux bore；10 --- flexible sealing material.

Specific embodiment

It should be appreciated that specific embodiment described herein is not used to limit this only to explain this utility model Utility model.

A kind of audio amplifier, including casing, controller and the speaker on the casing are designed, the casing includes one The outer container 1 of molding and the interior case 2 in outer container 1, the interior case 2 are made up of wood materials, and the outer container 1 is made of plastics, The interior case 2 and outer container 1 are brought into close contact；

The opening through outer container 1 and interior case 2 is offered on the casing, the interior case 2 includes hollow cavity, the sound Case also includes the phase-reversing tube on casing, and described phase-reversing tube one end is exposed in the air outside casing, and the other end stretches into cavity It is interior；

The speaker is provided with dust cover 4 and magnet 8, is provided with every magnetosphere 7 between the dust cover 4 and magnet 8, described Magnet 8 is set on magnetosphere 7, is equipped with for adsorbing the electricity of magnet 8 on the left panel, right panel, base plate and top board Magnet, each electric magnet are provided with a magnetic field sensor for induced field Strength Changes, the electric magnet and magnetic field Induction apparatuss are electrically connected with the controller, and are also fixed by the sealing of flexible sealing material 10 between speaker and front panel, and The base plate is provided with a support 6 for the support speaker when electric magnet does not work, and 6 bottom hollow out of the support can Pass through for aforesaid phase-reversing tube.

Further, magnet 8 can also be made shell-like, so preferably can be coordinated with multiple electric magnet so that raise one's voice When device suspends, stress is than more uniform.

Further, the center of the support 6 is provided with the magnetic flux that the magnetic force produced for the electric magnet on base plate passes through Hole 9.

When work of electromagnet, speaker can suspend in the presence of electromagnetic force, without effect between speaker and support 6 Power；When electric magnet quits work, loudspeaker position does not change, but speaker can be withstood support by support 6.

Further, 6 upper surface of the support is provided with pressure transducer, and the pressure transducer is electrically connected with controller Connect, when speaker operation, pressure transducer has detected pressure, then it represents that speaker is not suspended completely, now can be with Corresponding electric magnet is controlled by controller so that speaker is suspended completely.

During operation principle of the present utility model：When audio amplifier power-off, now electric magnet is not powered up, so can not produce Magnetisation field and make speaker suspend, so the most weight of speaker is by made by support 6, and fraction is logical The flexible sealing material 10 crossed between the dust cover 4 of speaker and front panel is made；After audio amplifier is electrified, now electric magnet Also it is powered simultaneously and starts, then according to pre-set magnetic field size produces magnetic force, the magnet 8 to arranging on a speaker is produced Raw active force, and then cause speaker to suspend, most of gravity is offset by magnetic force, and fraction passes through flexible sealing material 10 Make, i.e., so that no active force between speaker and support 6, such speaker will not also drive support 6 to vibrate in vibration, And because flexible sealing material 10 is flexible, even if some vibration is delivered to by flexible sealing material 10 Voice box casing, that is also minimum；Then when audio amplifier power-off again because electric magnet again without, then electric magnet not followed by Continuous work, now speaker can fall down under gravity, but be because speaker suspend when and support 6 between no distance Or it is in small distance, so directly can be caught and then be supported by support 6 when speaker does not suspend, will not so damage and raise one's voice Device.

Apply for that the control principle in terms of electrical equipment is：After audio amplifier is powered, if pressure transducer has received pressure, then it represents that Now speaker returns 6 one pressure of support, does not suspend completely, so now controller can control the electricity being arranged on base plate Magnet increases magnetic force, and until pressure transducer is not received by pressure, and magnetic sensors is to test magnetic field always, is made Magnetic field around speaker magnets 8 is matched with magnetic field set in advance, and then speaker is just suspended, and stress is equal Even, if magnetic sensors test is not matched with the magnetic field of setting to magnetic field, controller controls corresponding electric magnet and does accordingly Change.

Finally it should be noted that above example is merely to illustrate the technical solution of the utility model rather than to this practicality The restriction of novel protected scope, although being explained in detail to this utility model with reference to preferred embodiment, the common skill of this area Art personnel should be appreciated that and the technical solution of the utility model can be modified or equivalent, without deviating from this practicality The spirit and scope of new technique scheme.

Claims

1. audio amplifier, including casing, controller and the speaker on the casing, it is characterised in that：The casing includes one Body formed outer container and the interior case in outer container, the interior case are made up of wood materials, and the outer container is made of plastics, described Interior case and outer container are brought into close contact；

The opening through outer container and interior case is offered on the casing, the interior case includes hollow cavity, and the audio amplifier is also wrapped The phase-reversing tube on casing is included, described phase-reversing tube one end is exposed in the air outside casing, and the other end is stretched in cavity；

The casing includes front panel, rear board, left panel, right panel, base plate and top board, before the opening is arranged on Plate；

The speaker is provided with dust cover and magnet, is provided with every magnetosphere between the dust cover and magnet, and the magnet is arranged On magnetosphere, it is being equipped with the left panel, right panel, base plate and top board for adsorbing the electric magnet of magnet, each electricity Magnet is provided with a magnetic field sensor for induced field Strength Changes, the electric magnet and magnetic sensors with control Device electrical connection processed, and also fixed by flexible sealing material sealing between speaker and front panel, and the base plate is provided with One support for the support speaker when electric magnet does not work, the frame bottom hollow out are available for aforesaid phase-reversing tube to wear Cross.

2. audio amplifier according to claim 1, it is characterised in that：The center of the support is provided with one for the electromagnetism on base plate The flux bore that the magnetic force that ferrum is produced passes through.

3. audio amplifier according to claim 1, it is characterised in that：The pedestal upper end face is provided with pressure transducer, and described Pressure transducer is electrically connected with the controller.