CN103929686A

CN103929686A - Loudspeaker box

Info

Publication number: CN103929686A
Application number: CN201410112636.5A
Authority: CN
Inventors: 阮松杰
Original assignee: NINGBO POLINATA ELECTRONICS CO Ltd
Current assignee: NINGBO POLINATA ELECTRONICS CO Ltd
Priority date: 2014-03-25
Filing date: 2014-03-25
Publication date: 2014-07-16

Abstract

The invention relates to a loudspeaker box which is installed on a vertical frame bar. The loudspeaker box comprises a loudspeaker box body. A loudspeaker is arranged on the front vertical face of the loudspeaker box body, an installation hole for fixing the loudspeaker box body is formed in the lower end face of the loudspeaker box body, a plurality of anti-skid blocks are vertically arranged on the inner wall of the installation hole, the end faces of the anti-skid blocks are arc-shaped faces, the top end of the frame bar is inserted into the installation hole, the arc-shaped end face of at least one of the anti-skid blocks is attached to the outer surface of the frame bar, and the anti-skid blocks are made of modified PVC materials. According to the loudspeaker box, the installation hole is formed in the lower end face of the loudspeaker box body and is used in cooperation with the simple landing frame bar, the loudspeaker box is easy to assemble and disassemble, and a wall is not damaged; the anti-skid blocks which are made of the modified PVC materials and are excellent in overall performance are arranged in the installation hole, the arc-shaped end faces of the anti-skid blocks are coated with anti-skid coatings, the friction force between the anti-skid blocks and the frame bar can be increased, the stability degree of the loudspeaker box body is high, the certain protection effect on the anti-skid blocks can be further achieved, and the service life of the anti-skid blocks can be prolonged.

Description

A kind of audio amplifier

Technical field

The present invention relates to a kind of audio amplifier, belong to technology for loudspeaker box field.

Background technology

Audio amplifier refers to audio signal to be transformed to a kind of equipment of sound, and popular saying just refers in audio amplifier main frame casing or subwoofer casing and carry power amplifier.At present, allegro life is recognized people, and suitable amusement is very effective to alleviating the pressure of living, and therefore the abstract the recreational consumption of family is at rapid growth, and digitized stereo set is also more and more universal.

Existing audio amplifier mainly comprises sound box and is installed on the loud speaker in casing, after being amplified to processing, audio signal goes out sound by the playback of audio amplifier own, with this audio amplifier in the time putting the music on, can obtain perfection and generally will carry out heighten atmosphere by light, in some singing-halls, bar, music and light are often used in conjunction with, effect is better, because this audio amplifier volume is larger, general audio amplifier is directly positioned on ground, and of long duration can making moist, or people can bump against sound box in the process of walking, make it impaired, therefore in some specific occasion, sound box is often placed on higher place, and conventional seating means mainly contains two kinds, the one, mounting bracket on the wall, then audio amplifier is installed on support, bother but so not only install and take off all, and setting height(from bottom) is fixed, its height can not regulate with actual needs, in increasing installation cost, more can damage body of wall, the 2nd, directly vertical perforating on metope, then swell fixture is thrown in hole, a part for swell fixture exposes, the back side at sound box offers installing hole, when installation, directly installing hole is enclosed within on the swell fixture exposing, sound box is hung up, but so install, sound box easily with swell fixture disengaging, less stable, and when audio amplifier is when hanging on body of wall, this swell fixture exposes, greatly affect the attractive in appearance of house, and this installation method can only hang with the round shape thing of similar swell fixture sound box, cannot tangle sound box with other object side, its installation is restricted greatly.

Summary of the invention

The object of the invention is the problems referred to above that exist for prior art, proposed a kind of audio amplifier simple, stability is strong, installation cost is little of installing.

Object of the present invention can realize by following technical proposal: a kind of audio amplifier, be installed on vertical hack lever, comprise sound box, the positive facade of described casing is provided with loud speaker, casing lower surface offers the installing hole for static housing, on described installing hole inwall, be vertically installed with some non-slipping blocks, the end face of described non-slipping block is arcwall face, and described hack lever top is inserted in installing hole and the curved end of at least one non-slipping block and the laminating of hack lever outer surface; Wherein, described non-slipping block is become to be grouped into by following parts by weight: PVC:60-90 part, wear-resisting modifier: 15-25 part, glass microballoon: 2-8 part, glass fibre: 5-10 part, carborundum: 1-3 part, impact modifier: 3-10 part, stabilizer: 2-5 part, lubricant: 1-3 part.

Because the present invention offers installing hole on sound box lower surface, therefore, if want, sound box is arranged on to eminence, only need place on ground an easy hack lever, then hack lever is inserted in the installing hole of sound box bottom, install more for convenience, hack lever is with respect to traditional support, its use cost is lower, and can not damage body of wall; And the setting height(from bottom) of sound box changes with the length of hack lever, can arbitrarily raise or reduce, also can use adjustable hack lever herein, so regulate audio amplifier height convenient.And, it is arcwall face non-slipping block that the present invention is provided with the end face that PVC material makes in installing hole, while making hack lever insert in installing hole, the end face of non-slipping block can be fitted with the outer surface of hack lever, increase the frictional force between installing hole and hack lever, make the degree of stability of sound box better, also prevent sound box axial rotation.And, the advantages such as PVC material has that quality is light, intensity is high, insulation, corrosion-resistant, high comprehensive performance, and wide material sources, cheap, the non-slipping block made from PVC material can make the degree of stability of sound box better, also can not affect oeverall quality and the cost of audio amplifier.But the anti-wear performance of common PVC material is undesirable, high to hack lever wear extent, useful life is shorter; And, if in the situation that when non-slipping block that hack lever is made with PVC material contacts, external influence power is larger, easily there is embrittlement in the non-slipping block that PVC material is made.Therefore, the present invention need to carry out blending and modifying by the PVC material that is used for preparing non-slipping block.

Prepare non-slipping block with PVC material, main is to carry out wear-resisting modification to PVC material, therefore, the present invention has added wear-resisting modifier in PVC material, and described wear-resisting modifier is one or more in butadiene-styrene rubber, natural rubber, brium carbonate whisker, calcium carbonate crystal whisker.The function admirables such as wear-resisting, heat-resisting, the ageing-resistant and processability of butadiene-styrene rubber and natural rubber, add resistance to wear and other mechanical performance that in PVC material, can effectively improve PVC material as wear-resisting modifier.Brium carbonate whisker and calcium carbonate crystal whisker have filamentary structure, are simultaneously also high hardness materials, add and in PVC material, have certain wear-resisting modified effect, but effect is not clearly.Therefore, the present invention is more preferably by butadiene-styrene rubber, natural rubber, brium carbonate whisker and the composite use of calcium carbonate crystal whisker, more obvious to the modification of PVC resistance to wear and other performance in conjunction with the advantage of each material.In addition, the present invention has also added the rational glass microballoon of deal, glass fibre and carborundum to carry out reinforcement to PVC anti-wear performance in PVC material, has increased the mechanical performances such as the hardness of PVC material simultaneously.Described glass microballoon and carborundum are crossed 15-40 mesh sieve.By the reasonable composite numerous wear-resisting modifier adding in PVC material, the non-slipping block that the present invention is made is more wear-resisting, and mechanical performance is better, and useful life is more of a specified duration.

Embrittlement does not occur when making the laminating of the end face of non-slipping block and the outer surface of hack lever, the present invention has added impact modifier in PVC material, and described impact modifier is one or more in CPE, ACM resin, ROHM AND HAAS resin.

The present invention, in order to improve the combination property of PVC material, has also added a certain amount of stabilizer and lubricant in PVC material.Stabilizer can stop or block the decomposition of PVC, and described stabilizer is one or more in the conventional stabilizer of PVC material, as tribasic lead sulfate, dibasic lead phosphite, barium stearate, cadmium stearate, epoxidized soybean oil, ultra-violet absorber etc.Lubricant can increase the melt fluidity of PVC, to prevent that itself and metal surface from adhering to, is conducive to PVC processing and forming, and described lubricant is one or more in PVC material conventional lubricants, as metallic soap, stearic acid, paraffin, molybdenum trisulfide, mineral wet goods.

As preferably, the preparation method of described non-slipping block comprises the following steps:

S1, take raw material and put into homogenizer by the constituent of above-mentioned non-slipping block and parts by weight thereof, at 120-160 DEG C of temperature, stir 10-20min;

S2, the above-mentioned raw material stirring is joined to double screw extruder extruding pelletization by feeding machine;

S3, the above-mentioned pellet making is added in the barrel of injection molding machine, be heated to molten condition, be then injected in mould through pressurize, the cooling non-slipping block of making.

As preferably, the extruder temperature of double screw extruder described in step S2 is: a district temperature 125-165 DEG C, two district temperature 120-158 DEG C, three district temperature 115-150 DEG C, four district temperature 115-142 DEG CHe five district temperature 110-138 DEG C; In step S3, heating-up temperature is 180-245 DEG C, and mold temperature is 45-60 DEG C, and injection pressure is 70-90MPa, and dwell pressure is: 30-50MPa, dwell time: 5-10S, cooling time 30-80S.

As preferably, described non-slipping block curved end is also coated with the non-skid coating that a layer thickness is 0.5-2mm, described non-skid coating is one or more in chlorinated polyvinyl chloride, chlorinated rubber, polyurethane, acrylic, CPC antilubricant, described non-skid coating has also added the abrasive material of 5-16% in use, described abrasive material is one or more in diamond spar series, silicon-carbide series, and described abrasive material is crossed 10-30 mesh sieve.The non-slipping block curved end that the present invention makes at PVC applies one deck non-skid coating again; and in non-skid coating, add a certain proportion of abrasive material; not only increase the frictional force of non-slipping block curved end and hack lever binding face; and in the time of the curved end of non-slipping block and the outer surface of hack lever laminating generation friction; non-skid coating first weares and teares; now, the non-slipping block that non-skid coating is made PVC material has just played certain protective effect, extends the useful life of non-slipping block.

As preferably, described casing lower surface one lateral edges offer the first breach and the first breach adjacent with installing hole, in described the first breach, be provided with adjusting rod, the vertical penetrating mounting holes madial wall of described adjusting rod and adjusting rod front end are positioned at installing hole and move at installing hole, because the pore size of installing hole is fixed, and the diameter of hack lever is not identical, but all within the scope of the pore size of installing hole, when the diameter of hack lever hour, hack lever inserts between the interior meeting of installing hole and installing hole madial wall and produces certain interval, when being arranged on hack lever, can rock sound box, its firm effect is poor, therefore at the outer setting adjusting rod of installing hole, make to form adjustable gap between adjusting rod front end and installing hole madial wall, just can regulate according to the thickness of hack lever, on the one hand sound box can be arranged on the hack lever that thickness is different, make on the other hand hack lever be adjacent in installing hole madial wall, be conducive to improve the steadiness of sound box.

As preferably, both sides, described casing lower surface are symmetrically arranged with respectively two groups of protection bases, and described two groups of protection bases are by being from back to front splayed setting, and described two groups of protection bases are in same plane; Because this audio amplifier also can equally with traditional audio amplifier be positioned on bottom surface; and be positioned on ground; need to consider soundness and moisture effect when it is placed; therefore be symmetrical arranged two groups of protection bases in casing lower surface; can effectively ensure the stability of casing on the both direction of left and right, protection base makes to form certain interval between casing lower surface and ground, while not only preventing that casing from moving directly and ground friction; protect casing not to be damaged, also played moisture-proof role.

As preferably, described bonnet upper surface offer two groups with protection base accommodation hole one to one, described accommodation hole aperture is greater than protection base diameter; Existing sound box is in the time storing, can only arrange placement, especially when casing is more, it is larger that this kind stores mode floor space, and stack is placed, its soundness is lower again, therefore offer the accommodation hole corresponding with protection base in the upper surface of each sound box, so sound box, with regard to superposeing placement, both conveniently stored, save again space, and its soundness is higher.

As preferably, described casing is made up of protecgulum and bonnet, and described protection base is arranged on the lower surface of bonnet, and both sides, described protecgulum lower surface are respectively arranged with security bar, described security bar in protection base in same plane; Because protection base is installed on bonnet, between itself and protecgulum facade, there is certain distance, so in the time that casing is unstable, easily tilt from here, therefore on the lower surface of protecgulum, setting and protection base, in conplane security bar, have increased the stability of casing in former and later two directions.

As preferably, after described bonnet, on facade, vertically offer square pit, square pit has upper side wall, and described upper side wall two ends offer respectively the suppending hole for hanging casing, the back side at sound box offers suppending hole, this audio amplifier also can be hung on the wall as existing sound box, this suppending hole is vertically offered, be applicable to being suspended on the uncinus that is installed on body of wall, hang on than existing sound box on the swell fixture of level, damage to body of wall is less, its stablizing effect is better, and this suppending hole is symmetrically arranged with two of left and right on this upper side wall, balance more after sound box is hung, stability is better, and when sound box is taken off, this uncinus can not affect the attractive in appearance of body of wall yet, this uncinus even can hang other ornaments, play the effect of beautifying space.

As preferably, on described bonnet side elevation, laterally offer the second breach, in the second breach, be provided with handle and two hand two ends and be fixedly connected with lower surface with the upper surface of the second breach respectively; Due to handle being installed on sound box, make casing pick up while putting convenient.

Compared with prior art, the present invention has following beneficial effect:

1, offer installing hole in sound box lower surface, coordinate land easily hack lever use, installation and removal more for convenience, hack lever is with respect to traditional support, its use cost is lower, and can not damage body of wall.

2, end face being set in installing hole is arcwall face non-slipping block, while making hack lever insert in installing hole, the end face of non-slipping block can be fitted with the outer surface of hack lever, increases the frictional force between installation and hack lever, make the degree of stability of sound box better, also prevent sound box axial rotation.

3, non-slipping block adopts modifying character for PVC material to make, and quality is light, intensity is high, hardness is large, insulation, corrosion-resistant, wear-resisting, high comprehensive performance, long service life.

4, the curved end of non-slipping block is coated with one deck and has added the non-skid coating of abrasive material, can not only increase the frictional force between non-slipping block and hack lever, and the non-slipping block that can also make PVC material plays a protective role, and extends the useful life of non-slipping block.

5, offer the accommodation hole corresponding with protection base at sound box top, make multiple audio amplifiers in the time storing, the placement that can superpose, has saved storage space.

6, vertically offer suppending hole at the sound box back side, coordinate uncinus just can meet sound box and be suspended on the demand on metope, increased the stability while suspension, and uncinus is less to the damage of body of wall, take off after sound box, this uncinus can not affect the attractive in appearance of body of wall yet.

Brief description of the drawings

Fig. 1 is the front schematic perspective view of a kind of audio amplifier of the present invention.

Fig. 2 is the back side schematic perspective view of a kind of audio amplifier of the present invention.

Fig. 3 is the schematic top plan view of a kind of audio amplifier of the present invention.

In figure, 100, casing; 200, protecgulum; 210, the first lower surface; 211, security bar; 300, bonnet; 310, the second lower surface; 320, installing hole; 321, non-slipping block; 330, the first breach; 340, separating part; 350, adjusting rod; 360, protection base; 370, accommodation hole; 380, square pit; 381, suppending hole; 390, the second breach; 391, handle.

Embodiment

Be below specific embodiments of the invention by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiment.

As depicted in figs. 1 and 2, a kind of audio amplifier of the present invention, comprises sound box, and the shape of cross section of this casing is roughly trapezoidal shape, and this casing is connected and is formed by protecgulum and bonnet.

Further, the positive facade of described protecgulum is provided with loud speaker, for converting electrical signals to voice signal and discharging larger sound.

Further, this protecgulum bottom has the first lower surface, and the face both sides of this first lower surface are symmetrically arranged with respectively security bar, and two security bars are arranged in parallel and are horizontally disposed with, and this security bar, for weight before and after balance box, makes casing front and back held stationary.

As Fig. 2, shown in Fig. 3, this bonnet bottom has the second lower surface, the shape of this second lower surface is roughly trapezoidal, on the second lower surface, vertically offer circular installing hole, certainly, this installing hole also can be circular other shape in addition, this mounting hole site is on the axis of the second lower surface, in this installing hole, can insert match and top be circular hack lever, certainly, the end shape of this hack lever is determined by the shape of installing hole, so, casing is installed on hack lever, facilitate the installation of casing and take off, sound box is laid to the pinnacled while reaching, its use cost is less.

Further, be placed in the stability on hack lever in order to increase casing, on the inwall of this installing hole, be vertically installed with eight non-slipping blocks, eight non-slipping blocks evenly arrange, in order to coordinate the round tip of hack lever, the end face of non-slipping block is equal arcwall face arbitrarily, so make the end face of non-slipping block and the contact area of hack lever top outer surface larger, increase the frictional force of non-slipping block end face and hack lever top outer surface, casing is placed on hack lever to be made to be difficult for rotating, certainly, in order to make the frictional force on non-slipping block and hack lever top stronger, surface at non-slipping block can also apply one deck non-skid coating.

Further, offer the first breach at the second lower surface one lateral edges, this first breach is adjacent with installing hole and be in together on the axis of casing, between this first breach and installing hole, form separating part, in this first breach, be horizontally disposed with adjusting rod, adjusting rod front end is through this separating part and be positioned at installing hole, between this adjusting rod and separating part, can be threaded connection, also can connect by alternate manner, this adjusting rod can be by manually twisting adjusted, by being moved, adjusting rod regulates the distance between installing hole inwall and adjusting rod front end, make this installing hole meet the hack lever of different size with this.

Further; on four angles of the second lower surface, be respectively arranged with a protection base; this protection base one has four and be divided into two groups; because the shape of the second lower surface is roughly trapezoidal; these two groups of protection bases are splayed setting from back to front, and four protection bases are in same plane, and these four protection bases separate the second lower surface and ground; effectively protected sound box not to be damaged, and ensure sound box in horizontal stability.

As shown in Figure 1, on the upper surface of bonnet, offer four accommodation holes, four accommodation holes are corresponding one by one respectively at four protection bases of this second lower surface, four accommodation holes are in same plane, and the aperture of accommodation hole is greater than the diameter of protection base, make accommodation hole can hold lower protection base, therefore in the time that sound box is greater than more than two, the stackable placement of sound box, joint space-efficient simultaneously, ensures stability when sound box stores.

As shown in Figure 1, on the back elevation of this bonnet, vertically offer square pit, this square pit has upper side wall, this upper side wall can be horizontally disposed with, also downward-sloping setting from inside to outside, two ends at this upper side wall offer respectively the suppending hole for hanging casing, and this suppending hole can be used for hanging on corresponding uncinus, the balance of fastness when guard box body overhang and casing both sides.

Further, laterally offer the second breach on the side elevation of bonnet, be provided with handle and two hand two ends are fixedly connected with the two side of the second breach respectively in the second breach, this handle makes user can easily carry sound box.

Wherein, above-mentioned non-slipping block is become to be grouped into by following parts by weight: PVC:60-90 part, wear-resisting modifier: 15-25 part, glass microballoon: 2-8 part, glass fibre: 5-10 part, carborundum: 1-3 part, impact modifier: 3-10 part, stabilizer: 2-5 part, lubricant: 1-3 part.

Table 1: the constituent of embodiment of the present invention 1-4 non-slipping block and parts by weight

Embodiment 1:

Take raw material and put into homogenizer by the constituent of 1 non-slipping block of embodiment in table 1 and parts by weight thereof, at 120 DEG C of temperature, stir 20min.Then the raw material stirring is joined to double screw extruder extruding pelletization by feeding machine; The extruder temperature of double screw extruder is: 165 DEG C of district's temperature, 158 DEG C of two district's temperature, 150 DEG C of three district's temperature, 138 DEG C of four district's temperature 142 DEG CHe five district's temperature.The pellet finally granulation being made adds in the barrel of injection molding machine, is heated to 180 DEG C and is molten condition, and be expelled in temperature is the mould of 45 DEG C, and injection pressure is 90MPa.After having injected under 50MPa pressure pressurize 10S, then cooling 80S, makes non-slipping block.

Embodiment 2:

Take raw material and put into homogenizer by the constituent of 2 non-slipping blocks of embodiment in table 1 and parts by weight thereof, at 130 DEG C of temperature, stir 18min.Then the raw material stirring is joined to double screw extruder extruding pelletization by feeding machine; The extruder temperature of double screw extruder is: 155 DEG C of district's temperature, 145 DEG C of two district's temperature, 140 DEG C of three district's temperature, 128 DEG C of four district's temperature 136 DEG CHe five district's temperature.The pellet finally granulation being made adds in the barrel of injection molding machine, is heated to 200 DEG C and is molten condition, and be expelled in temperature is the mould of 50 DEG C, and injection pressure is 85MPa.After having injected under 45MPa pressure pressurize 8S, then cooling 65S, makes non-slipping block.

Embodiment 3:

Take raw material and put into homogenizer by the constituent of 3 non-slipping blocks of embodiment in table 1 and parts by weight thereof, at 140 DEG C of temperature, stir 15min.Then the raw material stirring is joined to double screw extruder extruding pelletization by feeding machine; The extruder temperature of double screw extruder is: 158 DEG C of district's temperature, 150 DEG C of two district's temperature, 140 DEG C of three district's temperature, 125 DEG C of four district's temperature 136 DEG CHe five district's temperature.The pellet finally granulation being made adds in the barrel of injection molding machine, is heated to 210 DEG C and is molten condition, and be expelled in temperature is the mould of 52 DEG C, and injection pressure is 78MPa.After having injected under 42MPa pressure pressurize 7S, then cooling 55S, makes non-slipping block.

Embodiment 4:

Take raw material and put into homogenizer by the constituent of 4 non-slipping blocks of embodiment in table 1 and parts by weight thereof, at 150 DEG C of temperature, stir 12min.Then the raw material stirring is joined to double screw extruder extruding pelletization by feeding machine; The extruder temperature of double screw extruder is: 150 DEG C of district's temperature, 142 DEG C of two district's temperature, 140 DEG C of three district's temperature, 125 DEG C of four district's temperature 135 DEG CHe five district's temperature.The pellet finally granulation being made adds in the barrel of injection molding machine, is heated to 240 DEG C and is molten condition, and be expelled in temperature is the mould of 60 DEG C, and injection pressure is 75MPa.After having injected under 35MPa pressure pressurize 6S, then cooling 40S, makes non-slipping block.

The non-slipping block that embodiment of the present invention 1-4 is made carries out performance test, and test result is as shown in table 2.

The non-slipping block the performance test results that table 2: embodiment of the present invention 1-4 makes

As can be seen from Table 2, non-slipping block machine intensity that embodiment of the present invention 1-4 makes is high, anti-wear performance good, abrasion resistance reaches more than 6000 times, in hack lever inserts installing hole time, the end face of non-slipping block can be fitted with the outer surface of hack lever, increase the frictional force between installation and hack lever, make the degree of stability of sound box better, also prevent sound box axial rotation; And the non-slipping block made from PVC material when hack lever is when external influence power is less than 2500N while contacting, can there is not embrittlement in the non-slipping block that PVC material is made, and non-slipping block is extended useful life.

In addition, the present invention is also coated with at non-slipping block curved end the non-skid coating that a layer thickness is 0.5-2mm, and painting method is the conventional painting method of coating.Wherein, described non-skid coating is one or more in chlorinated polyvinyl chloride, chlorinated rubber, polyurethane, acrylic, CPC antilubricant, described non-skid coating has also added the abrasive material of 5-16% in use, described abrasive material is one or more in diamond spar series, silicon-carbide series, and described abrasive material is crossed 10-30 mesh sieve.

The non-slipping block curved end that table 3: embodiment of the present invention 1-4 makes applies non-skid coating composition and thickness

Again the non-slipping block curved end of above-mentioned coating certain thickness non-skid coating is carried out to abrasion resistance test, test result is as shown in table 4.

Table 4: non-slipping block curved end abrasion resistance test result after coating non-skid coating

As can be seen from Table 4, apply after the non-skid coating that adds certain proportion abrasive material at non-slipping block curved end, the abrasion resistance of non-slipping block curved end has reached more than 6800 times, has greatly extended the useful life of non-slipping block of the present invention.

The non-slipping block that the present invention is made is arranged in installing hole, in hack lever inserts installing hole time, the end face of non-slipping block can better be fitted with the outer surface of hack lever, increases the frictional force between installing hole and hack lever, make the degree of stability of sound box better, also prevent sound box axial rotation.Then by regulating the height of hack lever to reach the object that regulates audio amplifier height, installation method is simple, cost is low, and stability is strong.

Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendments or supplement or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.

Although the present invention has been made a detailed description and has quoted as proof some specific embodiments, to those skilled in the art, only otherwise it is obvious leaving that the spirit and scope of the present invention can make various changes or revise.

Claims

1. an audio amplifier, be installed on vertical hack lever, comprise sound box, it is characterized in that, the positive facade of described casing is provided with loud speaker, and casing lower surface offers the installing hole for static housing, on described installing hole inwall, is vertically installed with some non-slipping blocks, the end face of described non-slipping block is arcwall face, and described hack lever top is inserted in installing hole and the curved end of at least one non-slipping block and the laminating of hack lever outer surface; Wherein, described non-slipping block is become to be grouped into by following parts by weight: PVC:60-90 part, wear-resisting modifier: 15-25 part, glass microballoon: 2-8 part, glass fibre: 5-10 part, carborundum: 1-3 part, impact modifier: 3-10 part, stabilizer: 2-5 part, lubricant: 1-3 part.

2. a kind of audio amplifier according to claim 1, is characterized in that, the preparation method of described non-slipping block comprises the following steps:

S1, take raw material and put into homogenizer by the constituent of non-slipping block claimed in claim 1 and parts by weight thereof, at 120-160 DEG C of temperature, stir 10-20min;

3. a kind of audio amplifier according to claim 2, it is characterized in that, the extruder temperature of double screw extruder described in step S2 is: a district temperature 125-165 DEG C, two district temperature 120-158 DEG C, three district temperature 115-150 DEG C, four district temperature 115-142 DEG CHe five district temperature 110-138 DEG C; In step S3, heating-up temperature is 180-245 DEG C, and mold temperature is 45-60 DEG C, and injection pressure is 70-90MPa, and dwell pressure is: 30-50MPa, dwell time: 5-10S, cooling time 30-80S.

4. a kind of audio amplifier according to claim 1, it is characterized in that, described non-slipping block curved end is also coated with the non-skid coating that a layer thickness is 0.5-2mm, described non-skid coating is one or more in chlorinated polyvinyl chloride, chlorinated rubber, polyurethane, acrylic, CPC antilubricant, described non-skid coating has also added the abrasive material of 5-16% in use, described abrasive material is one or more in diamond spar series, silicon-carbide series, and described abrasive material is crossed 10-30 mesh sieve.

5. a kind of audio amplifier according to claim 1, it is characterized in that, described casing lower surface one lateral edges offer the first breach and the first breach adjacent with installing hole, in described the first breach, be provided with adjusting rod, the vertical penetrating mounting holes madial wall of described adjusting rod and adjusting rod front end are positioned at installing hole and move at installing hole.

6. a kind of audio amplifier according to claim 1, is characterized in that, both sides, described casing lower surface are symmetrically arranged with respectively two groups of protection bases, and described two groups of protection bases are by being from back to front splayed setting, and described two groups of protection bases are in same plane.

7. a kind of audio amplifier according to claim 1, is characterized in that, described bonnet upper surface offers two groups and protection base accommodation hole one to one, and described accommodation hole aperture is greater than protection base diameter.

8. a kind of audio amplifier according to claim 1, it is characterized in that, described casing is made up of protecgulum and bonnet, and described protection base is arranged on the lower surface of bonnet, both sides, described protecgulum lower surface are respectively arranged with security bar, described security bar in protection base in same plane.

9. a kind of audio amplifier according to claim 1, is characterized in that, vertically offers square pit after described bonnet on facade, and square pit has upper side wall, and described upper side wall two ends offer respectively the suppending hole for hanging casing.

10. a kind of audio amplifier according to claim 1, is characterized in that, on described bonnet side elevation, laterally offers the second breach, is provided with handle and two hand two ends and is fixedly connected with lower surface with the upper surface of the second breach respectively in the second breach.