CN2188835Y

CN2188835Y - Facsimile sound box

Info

Publication number: CN2188835Y
Application number: CN 94203927
Authority: CN
Inventors: 梁光远
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-02-18
Filing date: 1994-02-18
Publication date: 1995-02-01
Anticipated expiration: 2004-02-18

Abstract

The utility model relates to a sound box. A convex sound box of a resonator is arranged in front of the opening of the paper cone of a loudspeaker; a sound outlet is arranged in the side direction of a resonator, or a resonant plate, a resonant strip and a sound correcting pole are arranged in the resonator. A sound box of a resonator of an inverted tube can be simultaneously arranged in the back direction of the loudspeaker, wherein a resonant plate and a resonant strip are arranged in the inverted tube; the inner end of the inverted tube is obliquely cut into an oblique plane of 30 DEG to 45DEG. When the loudspeaker sounds, sound is released after resonating with the resonator and inner devices of the resonator to make the sound stereo, resonant, mild and clear. The sound box is suitable for being arranged in radios, television sets, various stereo sets, theaters, etc.

Description

Facsimile sound box

The utility model relates to a kind of audio amplifier, specifically is a kind of audio amplifier that can make loud speaker fax sound equipment.

Traditional audio amplifier external form has varied, comprises cuboid, cylinder, spherosome, but no matter is which kind of type body, all is directly loud speaker to be contained on the Loudspeaker panel, during pronunciation, can only rely on the sympathetic response in audio amplifier space, loud speaker rear portion, and the sympathetic response effect is undesirable.Simultaneously, also there is the mechanical resonant problem to some extent in traditional audio amplifier, elasticity is undesirable, though some senior audio amplifiers are by using material such as medium airtight pane and adopting technology such as dividing plate, deficiencies such as resonance are reduced to not half, have increased elasticity, but the corresponding weakening of loudness, the vibration time of sound shortens, and three-dimensional sympathetic response sound is also incomplete.

The purpose of this utility model is according to bionics principle, designs a kind of novel audio amplifier, and this audio amplifier can improve the three-dimensional sympathetic response effect of loud speaker, makes sound softer, clear, and the distribution of various sound, vibration time are reasonable.

The scheme that the utility model purpose realizes is outside increasing anterior three-dimensional toot the device altogether of loud speaker, and improves the structure of existing loud speaker rear portion casing.Specific practice is: the loudspeaker horn actinal surface is on being fixed on a semi-circular spheroid, semiellipse type spheroid or cylindrical resonant audio amplifier mouth or in the casing, to having sender, it is better that the sender area is that loud speaker effectively vibrates 1-1/2 effect of area towards the loudspeaker horn oral-lateral for resonant; Or sounding board, resonant bars and sound also are housed in resonant proofread and correct among post or the three one to two kind, with further raising sympathetic response effect.In order further to improve the three-dimensional sympathetic response effect of loud speaker, can also be fixedly connected with a resonant audio amplifier dorsad at loud speaker simultaneously, and in this resonant audio amplifier corresponding load onto sounding board or and resonant bars and the inner phase-reversing tube that tiltedly is slit into 30 ° of-45 ° of inclined-planes, the phase-reversing tube inclined-plane is loud speaker dorsad.Above-mentioned sounding board, resonant bars have certain amount of deflection.

The anterior resonant audio amplifier of the utility model loud speaker is selected differently according to the frequency response of high, medium and low sound, the case mouth can select to make 0 ° of-90 ° of inclined-plane respectively, makes the corresponding inclination of loud speaker and in the resonant casing.When being when making the bass audio amplifier, select resonant case mouth gradient at 0 °-30 °; When being when making the sound intermediate frequency audio amplifier, select resonant case mouth gradient at 31 °-60 °; When being when making the high audio audio amplifier, select resonant case mouth gradient at 61 °-90 °.

The shell of the utility model resonant is made by hard material, can be cement, plastics, pottery, glass, bakelite, aluminium alloy, timber etc., and inwall has one deck sound-absorbing material; Resonant internal resonance plate, resonant bars can select for use materials such as metal, plastics, plank, cardboard to make.

Portion's resonant internal resonance plate is circle, polygon or semilune before or after the utility model loud speaker, and fix or by the unsettled resonant central authorities that are fixed on of pillar along the resonant inwall, when being when the resonant inwall fixes and make loud speaker and sender to separate, sounding board is wanted perforate; Resonant bars be 1 or several fix by the resonant inwall or unsettled fixing by pillar.Several resonant bars are commaterial or non-same material in the same resonant.Sounding board, resonant bars and the position of correction post in resonant can be any, but sounding board and resonant bars with put respectively with loudspeaker horn bore plane mid point to resonant shell top be between the 0.2-0.4 of 1 unit or the 0.6-0.8 better; Sound proofread and correct post be vertically fixed on the sounding board or be vertically fixed on the loudspeaker horn mouth over against the resonant inwall.

Adopt the audio amplifier of such scheme preparation, when loud speaker pronounce, sound by with loud speaker front and rear portions resonant and resonant in the three-dimensional sympathetic response sound of generation such as sounding board, resonant bars, discharge sound from sound mouth then.

The utility model audio amplifier is fit to be contained in public place of entertainment such as the audio amplifier, cinema of broadcast receiver, radio-cassette player, television set, earphone, various sound equipments and radio station mirror to be listened etc.Through listening contrast with the audio amplifier mirror of ad eundem loud speaker, the utility model audio amplifier has following characteristics: 1, the more three-dimensional sympathetic response of sound, soft, clear; 2, distortion is little, noise is low; 3, the accompaniment sound between song and music, musical instrument and the musical instrument is obviously separated, the distribution of various sound, and the vibration time is more reasonable, more can represent the feelings shadow of spot effect; 4, outward appearance uniqueness, elegant in appearance.

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the cutaway view of the utility model resonant audio amplifier embodiment.

Fig. 2 is the cutaway view of the utility model high pitch resonant audio amplifier embodiment.

Fig. 3 is the cutaway view of the utility model middle pitch resonant audio amplifier embodiment.

Fig. 4 is the cutaway view of the utility model bass resonant audio amplifier embodiment.

Fig. 5 is the cutaway view of another embodiment of the utility model resonant audio amplifier.

Fig. 6 is the utility model semilune sounding board schematic diagram.

In the embodiment shown in fig. 1, loud speaker 5 loudspeaker actinal surface positioning and fixing are at 11 casees mouths of semiellipse type spheroid resonant, have sender 4 in the side direction of 5 mouthfuls of layered front portion resonants 11 of loud speaker.

In the audio amplifier of high pitch resonant shown in Fig. 2,6 embodiment, small-bore high pitch loudspeaker 5 loudspeaker actinal surface positioning and fixing are at 11 casees mouths of semiellipse type spheroid resonant, and 11 casees mouths of resonant tilt 80 °.Loud speaker 5 bell-mouthed one is to having sender 4 dorsad for resonant 11, and the area of sender 4 equals effective vibration area of loud speaker 5.

With loud speaker 5 loudspeaker bore plane mid points to resonant 11 tops is 1 unit, be fixed with a semi-moon shaped resonance apart from the inwall of these mid point 0.382 place's resonant 11 senders 4 one sides and pull 2, be fixed with two rectangle resonant bars 3 apart from this mid point 0.618 place, article one, get plastic slat, article one, get bonding jumper, leave certain distance mutually.The loudspeaker horn mouth has a conical Sponge sound to proofread and correct post 1 over against resonant 11 inwall vertical fixing.Anterior resonant 11 audio amplifier inwalls have one deck Sponge sound-absorbing material 10.Outside resonant 11 audio amplifiers top, block is housed.

Among the sound resonant audio amplifier embodiment, be by shown in Fig. 2 embodiment as shown in Figure 3, difference is that 11 casees mouths of resonant tilt 35 °, and case mouth bore is equal to the Squawker bore.The area of sender 4 is that loud speaker 5 effectively vibrates 2/3 of area; And be inserted in loud speaker 5 in resonant 14 audio amplifiers of another ellipse spheroid together with resonant 11, these rear portion resonant 14 sidewalls have a sender 7, sender 7 is extended with a phase-reversing tube 6 in resonant 14, length equals the radius of rear portion resonant 14, phase-reversing tube 6 ends tiltedly cut 45 °, and the angle face is loud speaker 5 dorsad.With loud speaker 5 loudspeaker bore plane mid points to rear portion resonant 14 tops is 1 unit, be fixed with a square sounding board 9 apart from this mid point 0.8 place along resonant 14 inwalls, be fixed with two resonant bars 8 side by side on resonant 14 inwalls apart from this mid point 0.65 place, wherein one is wood lath, and one is plastic slat.Resonant 14 audio amplifier inwalls in rear portion have one deck asbestos bodies sound-absorbing material 10.Outside rear portion resonant 14 audio amplifiers top, the audio amplifier seat is housed.

In bass resonant audio amplifier embodiment shown in Figure 4, loud speaker 5 loudspeaker actinal surfaces, dorsad the resonant of a cylindrical body is arranged respectively, three's actinal surface horizontal location is fixed.Rear portion resonant 14 is greater than anterior resonant 11.Anterior resonant 11 square senders 4 are opened at sidewall, and sender 4 areas are that loud speaker 5 effectively vibrates 1/2 of area.With loud speaker 5 loudspeaker bore plane mid points to anterior resonant 11 summits is 1 unit, is fixed with a circular sounding board 2 apart from this mid point 0.618 place along resonant 11 inwalls; Separated by a distance to be fixed with 3, one of two rectangle resonant bars side by side be paperboard strip apart from this mid point 0.382 place, and another is a wood lath.Sounding board 2 central authorities have an aperture, and each vertical fixing of sounding board 2 two sides of close sender 4 has a conical Sponge sound to proofread and correct post 1.Resonant 14 sidewalls in rear portion have sender 7, and sender 7 is extended with a phase-reversing tube 6 in resonant 14, and phase-reversing tube 6 ends tiltedly cut 30 °, and the angle face is loud speaker 5 dorsad.Also be fixed with two resonant bars 8 and a circular sounding board 9 respectively at rear portion resonant 14 inwalls.Front and back resonant 11,14 inwalls are fixed with one deck Sponge sound-absorbing material 10.

In another embodiment of resonant audio amplifier shown in Figure 5, be to get embodiment illustrated in fig. 2 and resonant bars 3 of resonant 11 interior increases forwardly, make 11 casees mouth gradients of resonant into 40 °, loud speaker 5 is selected middle bass for use, with its whole positioning and fixing one, make loud speaker 5 be in the middle part of rectangle audio amplifier 12 then at a common audio amplifier 12 of rectangle.Audio amplifier 12 leaves the hole with resonant sender 4 corresponding section plate faces, seals between resonant 11 senders, 4 external diameters and the audio amplifier 12 panel hole internal diameters.Audio amplifier 12 other ends become the rear portion resonant, and with the sender 4 same senders 7 that on the plate face, have, sender 7 is extended with a phase-reversing tube 6 in audio amplifier 12 bodies, phase-reversing tube 6 ends tiltedly cut 40 °, the angle face is loud speaker 5 dorsad.Circular sounding board 8 and resonant bars 9 are by screw rod pillar 13 unsettled being fixed in the audio amplifier 12.

Claims

1, the matching used audio amplifier of a kind of and loud speaker, form by loud speaker and audio amplifier, it is characterized in that loud speaker (5) horn mouth towards being fixed on a semi-circular spheroid, semiellipse type spheroid or cylindrical resonant (11) the audio amplifier mouth or in the casing, resonant (11) has sender (4) towards loud speaker (5) horn mouth side direction; Or sounding board (2), resonant bars (3) and sound also are housed in resonant (11) proofread and correct among post (1) or the three one to two kind; Or be fixedly connected with resonant (14) audio amplifier dorsad at loud speaker (5) simultaneously, in rear portion resonant (14) corresponding be equipped with sounding board (8) or and resonant bars (9) and the inner phase-reversing tube (6) that tiltedly is slit into 30 ° of-45 ° of inclined-planes, phase-reversing tube (6) inclined-plane is loud speaker (5) dorsad.

2, the described and matching used audio amplifier of loud speaker according to claim 1, it is characterized in that the anterior resonant of loud speaker (5) (11) audio amplifier case mouth can select to make 0 ° of-90 ° of inclined-plane respectively, make the corresponding inclination of loud speaker (5) and in resonant (11) casing.

3, the described and matching used audio amplifier of loud speaker according to claim 1, it is characterized in that the sounding board (2,8) in the resonant is polygon, circle or semilune, and fix or unsettled fixing by pillar along resonant audio amplifier inwall, when being fixes and make loud speaker (5) and sender (4) when separating along the resonant inwall, sounding board (2) has the hole, resonant bars (3,9) is 1 or several are unsettled fixing by pillar (13), and sounding board and resonant bars have certain amount of deflection; Sound proofread and correct post (1) be vertically fixed on sounding board (2) go up or be vertically fixed on loud speaker (5) bore over against resonant (11) inwall.

4,, it is characterized in that it is being better between the 0.2-0.4 of 1 unit or the 0.6-0.8 with loud speaker (5) loudspeaker bore plane mid point to this resonant (11,14) audio amplifier top that sounding board (2,8) and resonant bars (3,9) are installed respectively according to claim 1,3 described and the matching used audio amplifiers of loud speaker.

5, the described and matching used audio amplifier of loud speaker according to claim 1 is characterized in that toot body audio amplifier sender (4,7) area is the 1-1/2 that loud speaker (5) effectively vibrates area altogether.