CN206042264U

CN206042264U - Box tuning formula audio amplifier

Info

Publication number: CN206042264U
Application number: CN201621088334.XU
Authority: CN
Inventors: 陈林
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-09-29
Filing date: 2016-09-29
Publication date: 2017-03-22
Anticipated expiration: 2026-09-29

Abstract

The utility model discloses a box tuning formula audio amplifier, including the box, and arrange in circuit board on speaker before the box is inside on the lateral wall and the back lateral wall, one of them sets up to double -deck chamber wall at least in surrounding the lateral wall of speaker circumference a week on the box, double -deck chamber wall comprises an inner chamber wall and the intermural sound passageway that separates of exocoel, it is in to go out the sound passageway set up on the back lateral wall of box to open mouthful, set up at least one along the horizontal direction on the inner chamber wall and crossed the sound groove, be provided with a support on the diapire of box, be provided with a lead screw on the support, be equipped with an advance and retreat slider with screw -thread fit mode cover on the lead screw, the opening can be in in the cladding around having born one on the advance and retreat slider speaker circumference outlying tuning frame, the lead screw is connected with an actuating mechanism. Realize that mechanical tuning, low cost, consumption are little, stable performance, sound reproduction quality be to environmentally advantageous the getting a promotion of broadcast.

Description

A kind of casing tuning formula audio amplifier

Technical field

The utility model is related to sound-box device technical field, more specifically a kind of casing tuning formula audio amplifier.

Background technology

Audio amplifier is the terminal of whole sound system, and its effect is that audio frequency electric energy is converted into corresponding acoustic energy, and its spoke It is mapped to space to go.Its basic structure includes casing, and core component is placed in the loudspeaker of box house.

As human ear exactly evaluates the most important standard of a sound system tonequality quality to the subjective feeling of sound, because This, it is believed that the performance height of audio amplifier is to play key effect to the playing quality of a sound system.So people think to the greatest extent All methods transform the playing quality constructed to lift sound box system of audio amplifier.

Such as patent CN201010137035.1 describes a kind of audio amplifier, and which includes housing and is contained in raising one's voice in housing Device and sound cup.Form sound chamber in the housing, the loudspeaker for sending sound to outside the housing and in the sound chamber, institute State, sender described in the sound Jing in the sound chamber is conducted to outside housing.The housing On be additionally provided with least one conduit, one of conduit connects the sender and sound chamber.The sound cup cover at it is described at least On one conduit, and the sound channel of bending is formed between the sender and sound chamber, to by the sound conduction in sound chamber To sender.The sound cup is provided with least two dividing plates, and at least two baffle interval is arranged in sound channel, is used for Sound channel is separated into into the subchannel at least two connection sound chambers and sender.Above-mentioned audio amplifier is by sound channel is separated into At least two subchannels so that sound is limited in subchannel and is resonated, so that audio amplifier sounding is more uniformly distributed.

However, the playing quality of sound box system is also closely bound up from different playing environments, the such as wall in some rooms Using Sound-proof material Soft Roll, then it is more for the absorption of middle bass, and sound can be excessively clean；The wall in some rooms for another example With ground using hard ceramic tile, then it is few for the absorption of middle bass, major part is reflected, and tone color feels muddy.As above Two kinds of situations ultimately cause human ear experiences the effect of audio amplifier just larger difference, and in a word, the playing quality of sound box system is poor.

Utility model content

The purpose of this utility model is to make up more than prior art deficiency, there is provided a kind of mechanical tuning, with low cost, work( Consume little, stable performance, playing quality and be directed to the casing tuning formula audio amplifier that playing environment effectively gets a promotion.

In order to reach object above, the utility model is achieved through the following technical solutions：A kind of casing tuning formula sound Case, including casing, and the wiring board on the loudspeaker and rear wall being placed on the box house front side wall, its feature exists In on the casing, in the circumferential one week side wall of circulating loudspeaker, at least one is set to double-deck cavity wall, the double-deck chamber Wall is separated out sound channel by internal chamber wall and outer chamber wall and constitutes, and the sound channel is set on the rear wall of the casing Opening port, offers at least one in the horizontal direction and crosses sound groove, be provided with one on the diapire of the casing on the internal chamber wall Seat, is provided with a screw mandrel on the bearing, the screw mandrel is arranged side by side with sound groove is crossed, with thread fiting mode set on the screw mandrel An advance and retreat slide block is provided with, port before and after is carried on the advance and retreat slide block and the loudspeaker week can be coated on to the periphery Tuning frame, the screw mandrel are connected with a drive mechanism.

The utility model is rotated by screw mandrel rotating and tuning frame is moved forward or rearward, so as to realize tuning frame pair The completely obscured of sound groove, fractional open, wide-open Regulation in all life process is crossed, and case is closed to unpacking or unpack and close case gradually to reach Change process, how many to realize Mechanical course volume, when case is closed, tonequality speed rhythm is fast, sound compacts, and when unpacking tonequality Speed rhythm is slow, sound is loose.The adaptation acoustical quality of intermediate frequency and low frequency is adjusted so as to preferably for different playing environments, Realize that playing quality effectively gets a promotion for playing environment.

Preferably, wherein one end of the sound groove excessively is located at the position that side wall joins front side wall, but the sound groove excessively Whole length less than whole internal chamber wall transverse width 70%.

It is unreasonable more than in 70% structure, and tuning frame cannot also reset.And opening sound slot length completely can cause Sound failure of adjustment, must stay part masking sound behind casing.

Preferably, the port depth in front and back of tuning frame was not more than the whole length of sound groove.

When tuning frame slides into bottom backward, which is crossed sound groove and is just close to Full-open state, and then plays masking toward front slide Cross the effect of sound groove.Tuning frame can make full use of length tuning, will not wasting space.It is not easy to affect tuning effect

Preferably, the sound groove of crossing is in in-line.

Cross that the shape design of sound groove plays is the change of product style, for the relation of its shape and tuning is which on the contrary The decisive role that area is played is some larger, even if sound channel is again greater than sound groove very little conversely speaking, then the effect of regulation Fruit is also small, and vice versa, so the area of section of sound channel and mistake sound groove penetrate area and will match and be preferred.

It is as the alternative of such scheme, described to cross sound groove undulate.Ibid parse.

Used as the alternative of such scheme, the sound groove of crossing is in round shape.Ibid parse.

Preferably, being connected with some reinforcements between corresponding internal chamber wall and outer chamber wall, some reinforcements will be right If answering sound channel to be separated out arterial highway branches out sound passage, per pass branch sound channel correspondence is assigned at least one and is arranged at internal chamber wall On cross sound groove.

In order to ensure the intensity of double-deck cavity wall, reinforcement is set up in sound channel, it is ensured that the intensity of whole casing.It is again Ensure that per pass branch sound channel plays tuning effect, so it is all indispensable to cross sound groove.

Preferably, the drive mechanism is a knob, the knob is arranged on the outer surface of the casing rear wall.

It is pure craft that knob carrys out the scheme of drive screw rotation, and advantage is with low cost, is easy to maintenance, has the disadvantage that product is low It is end, troublesome poeration, laborious.

Used as the alternative of such scheme, the drive mechanism is a clockwise and anticlockwise motor, the clockwise and anticlockwise motor and line Rotating control button on the plate of road is connected.

It is mechanical automation that clockwise and anticlockwise motor carrys out the scheme of drive screw rotation, and advantage is that product is high-end and atmospheric, operation side Just it is, laborsaving, have the disadvantage high cost.

Preferably, being arranged in parallel with screw mandrel same level in the both sides of screw mandrel on bearing there are a pair of slide bars, enter back skating Block wears this to slide bar while wearing screw mandrel.

In order that tuning is frameed shift moves more steady, install relatively reliable, Auxiliary support is carried out by a pair of slide bars.

Beneficial effect：The utility model preferably for different playing environments, adjusts the adaptation tonequality effect of intermediate frequency and low frequency Really, realize that playing quality effectively gets a promotion for playing environment.

Description of the drawings

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

Fig. 2 is rearview of the present utility model；

Fig. 3 is the structure sectional view of A-A in Fig. 2；

Fig. 4 is only to stay the structural representation of casing in Fig. 3；

Fig. 5 is the structural representation of removal casing in Fig. 3；

Fig. 6 is another kind of structural representation of removal casing in Fig. 3.

In figure：1- casings, 2- front windows, 3- loudspeakers, 4- rear hatches, 5- wiring boards, 6- power supply wiring mouths, 7- audio frequency are defeated Outgoing interface, 8- audio input interfaces, 9- sound channels, 10- internal chamber walls, 11- outer chamber walls, 12- cross sound groove, 13- reinforcements, 14- Bearing, 15- screw mandrels, 16- advance and retreat slide blocks, 17- tuning frames, 18- knobs, 19- slide bars, 20- clockwise and anticlockwise motors.

Specific embodiment

In order that technological means of the present utility model, creation characteristic and reached purpose are readily apparent from understanding, below in conjunction with tool Body embodiment is expanded on further the utility model.

Embodiment 1：As depicted in figs. 1 and 2, a kind of casing tuning formula audio amplifier, including the casing 1 of solid wood material, before casing 1 The front window 2 of an installation loudspeaker 3 is provided with the wall of side, and loudspeaker 3 is accommodated in inside casing 1 in horizontal interposition high up in the air Put, on 1 rear wall of casing, be provided with the rear hatch 4 of an installation wiring board 5, pacify on the part that wiring board 5 exposes outside casing 1 side by side Equipped with power supply wiring mouth 6, audio output interface 7 and audio input interface 8.

As shown in Figure 3 and Figure 4, on casing 1 in 3 circumferential one week side wall of circulating loudspeaker（Removing front-rear side walls needs cloth Loudspeaker and wiring board is put, and diapire is covered by ground）：Wherein upper side wall and two side walls are disposed as double-deck cavity wall, institute There is double-deck cavity wall to be separated out sound channel 9 by internal chamber wall 10 and outer chamber wall 11 to constitute, all sound channels 9 are in casing 1 Opening port is disposed as on rear wall, offers a plurality of sound groove excessively being arranged side by side on all internal chamber walls 10 in the horizontal direction 12, four are arranged wherein in the internal chamber wall 10 of upper side wall, each arrangement five in the internal chamber wall 10 of two side walls.Cross sound groove 12 its Middle one end is located at the position that side wall joins front side wall, but crosses 12 whole length of sound groove less than 10 transverse width of whole internal chamber wall 70%, here preferably 50%, it is in in-line to cross sound groove 12.

Per a plurality of reinforcement 13 is connected between the corresponding internal chamber wall 10 in face and outer chamber wall 11, concrete reinforcement 13 is several Suitably arrange according to the area of double-deck cavity wall, preferably two here, if correspondence sound channel 9 is separated out arterial highway point by these reinforcements 13 Sound channel is propped up, per pass branch sound channel is corresponded at least assigns to a sound groove 12 excessively being arranged on internal chamber wall 10, concrete mistake The area of branch's sound channel that the several evidences of corresponding bar of sound groove 12 are separated out suitably is arranged.

As shown in figure 5, be provided with a bearing 14 on the diapire of casing 1, on bearing 14, be provided with a screw mandrel 15, screw mandrel 15 with 12 parallel arrangement of sound groove is crossed, an advance and retreat slide block 16 is arranged with thread fiting mode on screw mandrel 15, in screw mandrel 15 on bearing 14 Both sides and 15 same level of screw mandrel be arranged in parallel and have a pair of slide bars 19, advance and retreat slide block 16 wears this while wearing screw mandrel 15 To slide bar 19.Port before and after one the tuning frame 17 that loudspeaker can be coated on 3 weeks to the periphery is carried on advance and retreat slide block 16, is adjusted Before and after sound frame 17, port depth was less than the whole length of sound groove 12, and before and after tuning frame 17, port is respectively facing front face with after Avoid.Screw mandrel 15 is connected with a drive mechanism.Drive mechanism is a knob 18, and knob 18 is arranged at the appearance of 1 rear wall of casing On face.

Embodiment 2：Cross 12 undulate of sound groove.Remaining is with embodiment 1.

Embodiment 3：Sound groove 12 is crossed in round shape.Remaining is with embodiment 1.

Embodiment 4：As shown in fig. 6, drive mechanism is a clockwise and anticlockwise motor 20, on clockwise and anticlockwise motor 20 and wiring board 5 Rotating control button is connected（Not shown in figure）.Remaining is with embodiment 1.

Embodiment 5：On casing 1 in 3 circumferential one week side wall of circulating loudspeaker：Only upper side wall is set to double-deck cavity wall.Its Remaining same embodiment 1.

Use：The utility model is rotated by screw mandrel rotating and tuning frame is moved forward or rearward, so as to realize adjusting Sound frame closes case to unpacking or unpack to and close to crossing the completely obscured of sound groove, fractional open, wide-open Regulation in all life process to reach The progressive formation of case, how many to realize Mechanical course volume, when case is closed, tonequality speed rhythm is fast, sound compacts, and when unpacking Shi Yinzhi speed rhythms are slow, sound is loose.

Claims

1. a kind of casing tuning formula audio amplifier, including casing, and the loudspeaker that is placed on the box house front side wall and rear side Wiring board on wall, it is characterised in that at least one setting in the circumferential one week side wall of circulating loudspeaker on the casing For double-deck cavity wall, the double-deck cavity wall is separated out sound channel by internal chamber wall and outer chamber wall and constitutes, and the sound channel is in institute State, offer at least one on the internal chamber wall in the horizontal direction and cross sound groove, it is described A bearing is provided with the diapire of casing, a screw mandrel is provided with the bearing, and the screw mandrel is arranged side by side with sound groove is crossed, described An advance and retreat slide block is arranged with thread fiting mode on screw mandrel, port is carried before and after one on the advance and retreat slide block and can be coated In loudspeaker week tuning frame to the periphery, the screw mandrel is connected with a drive mechanism.

2. casing tuning formula audio amplifier according to claim 1, it is characterised in that described wherein one end for crossing sound groove is located at side Side wall joins the position of front side wall, but the whole length of sound groove of crossing is less than the 70% of whole internal chamber wall transverse width.

3. casing tuning formula audio amplifier according to claim 2, it is characterised in that port depth is not more than before and after tuning frame Cross the whole length of sound groove.

4. the casing tuning formula audio amplifier according to Claims 2 or 3, it is characterised in that the sound groove of crossing is in in-line.

5. the casing tuning formula audio amplifier according to Claims 2 or 3, it is characterised in that described to cross sound groove undulate.

6. the casing tuning formula audio amplifier according to Claims 2 or 3, it is characterised in that the sound groove of crossing is in round shape.

7. the casing tuning formula audio amplifier according to claim 1 or 2 or 3, it is characterised in that corresponding internal chamber wall and outer chamber wall Between be connected with some reinforcements, if correspondence sound channel is separated out arterial highway and branches out sound passage, per pass by some reinforcements Branch's sound channel is corresponded to assigns at least one mistake sound groove being arranged on internal chamber wall.

8. casing tuning formula audio amplifier according to claim 1, it is characterised in that the drive mechanism is a knob, described Knob is arranged on the outer surface of the casing rear wall.

9. casing tuning formula audio amplifier according to claim 1, it is characterised in that the drive mechanism is rotating electricity Machine, the clockwise and anticlockwise motor are connected with the rotating control button on wiring board.

10. the casing tuning formula audio amplifier according to claim 1 or 8 or 9, it is characterised in that in the both sides of screw mandrel on bearing Being arranged in parallel with screw mandrel same level has a pair of slide bars, and advance and retreat slide block wears this to slide bar while wearing screw mandrel.