CN104363541A - Inverse-phase type voice box - Google Patents
Inverse-phase type voice box Download PDFInfo
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- CN104363541A CN104363541A CN201410709883.3A CN201410709883A CN104363541A CN 104363541 A CN104363541 A CN 104363541A CN 201410709883 A CN201410709883 A CN 201410709883A CN 104363541 A CN104363541 A CN 104363541A
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- reversing tube
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Abstract
The invention discloses an inverse-phase type voice box which comprises a voice box body (1). The voice box body (1) comprises a rear shell (2) and a front shell cover (7). An arch inverter tube (3) is fixed into the rear shell (2). The left end and the right end of the inverter tube (3) face the bottom of the rear shell (2). The left end and the right end of the inverter tube (3) are each provided with cavity shell (4) used for mounting a loudspeaker. The left end and the right end of the inverter tube (3) both stretch out of the cavity shells (4). An opening (201) is formed in the back face of the rear shell (2). A notch (303) is formed at the position, between the two cavity shells (4), of the inverter tube (3). A channel (5) is arranged between the opening (201) and the notch (303). The opening (202) is communicated with the notch (303) through the channel (5) in a sealed mode. The inverse-phase type voice box has the advantages that bass is clean and clear, and the low-frequency sound effect is good.
Description
Technical field
The field of the invention relates to a kind of phase inverted cabinet.
Background technology
Audio amplifier on market, utilize the vibrating diaphragm of loud speaker, vibrating diaphragm includes papery, and also have plastics, let it be, and what material is, operationally, vibrating diaphragm will ceaselessly seesaw loud speaker, promotes air, and then vibration is imported into people's ear, make people hear sound.And common phase inverted cabinet to be exposed the diaphragm of loudspeaker come sounding, and the rear of loud speaker also has vibration, if rearward for loud speaker vibration is also used, sound wave will be made to strengthen, supper bass is strengthened, after phase-reversing tube is installed, because the diameter of phase-reversing tube is less than loud speaker diameter, go out so just have stronger sound wave from phase-reversing tube, so, loud speaker is forwards obtained for utilization with rearward sound wave, audio amplifier tonequality is improved, the vibrating diaphragm of loud speaker is to the antiphase sound wave of radiation in sound box, through the casing effect of audio amplifier, time again by swinging to pipe to external radiation, wherein the sound wave of some lower frequency limit can be close with the same frequency acoustic phase of the vibrating diaphragm of loud speaker forwardly radiation, so the radiation efficiency of loud speaker is improved, thus extend LF-response.The effect that the phase-reversing tube of above-mentioned content introduction in audio amplifier plays, namely arranges phase-reversing tube and can to make the bass of audio amplifier can be comparatively clean, can expansion low-frequency corresponding.
But along with the raising of people's living standard, people, for the tonequality of audio amplifier, have had higher requirement, the common phase inverted cabinet comparatively speaking on existing market, be not also very desirable, still can there is a little noise in bass.
For above-mentioned defect, those skilled in the art has developed some patented products, comprises the phase-reversing tube type acoustics that Authorization Notice No. is CN 2521857Y, this phase-reversing tube type acoustics by being set with a resonator in the rear end of Squawker; One has been set with by two conical pipes between two woofer endings, two elbows, be used for eliminating distortion that refraction, scattering phenomenon that sound wave produces in casing cause and machine shakes, control loudspeaker exports sound wave approach, effectively utilize the sound wave that loud speaker rear end sends, to improve the power of amplifier, but be set with one by two conical pipes by between two woofer endings simply, two elbows, the annular channel of tubes connection composition.Although refraction that sound wave produces in casing can be eliminated to a great extent, distortion that scattering phenomenon causes and machine shake, but annular channel does not arrange corresponding opening, the sound wave that woofer and woofer vibration produce can be influenced each other by annular channel, finally affects the tonequality of audio amplifier.
Wherein also comprising application number is 201110062246.8, and this patent can avoid first, intermediate frequency and/or the directly corresponding independent phase-reversing tube of woofer, and the sound wave of each loud speaker is not interfere with each other.Sound wave out directly enters phase-reversing tube from loud speaker, cross section due to phase-reversing tube is circular arc, the axis rounding off of phase-reversing tube, therefore phase-reversing tube inner chamber is almost without corner angle, the phenomenon that sound wave can be made in corner angle position to produce diffraction drops to minimum, sound deflection reduces to minimum, not easily cause the response honeybee paddy of Mid Frequency, the defect that the directive property of medium-high frequency narrows, be not easy to produce harmful standing wave composition, the diffusion of medium-high frequency is improved significantly, but this sound equipment lacks voice box casing, after this uses for a long time, affect on overall and each position of sound equipment or the junction at each position, easily there is dust, affect the useful life of sound equipment, dust is entered in sound equipment, can impact the tonequality of sound equipment simultaneously.
Summary of the invention
The technical problem to be solved in the present invention is, provide a kind of deficiency overcome in background technology, bass is clarity more, the phase inverted cabinet that low frequency dive is dark.
For solving the problems of the technologies described above, technical scheme provided by the invention is: a kind of phase inverted cabinet, comprises audio amplifier body; Be the housing back cover of opening surface and the housing front shroud that is connected with the opening surface edge of housing back cover before described audio amplifier body comprises; Described housing back cover internal fixtion has the phase-reversing tube of arch, and the two ends, left and right of described phase-reversing tube are towards the bottom of housing back cover; The two ends, left and right of described phase-reversing tube are fixed with respectively one for installing the cavity shell of loud speaker, the opening surface of each described cavity shell is towards the opening surface of housing back cover; The two ends, left and right of described phase-reversing tube are all stretched out outside cavity shell; The back side of described housing back cover is provided with opening, the tube wall of the phase-reversing tube inwall after housing back cover between two described cavity shell offers breach, is provided with passage between described opening and breach; Described opening to be sealed with breach by passage and is communicated with.
Compared with prior art, technique effect of the present invention is: our inventive point is mainly reflected in: first we are provided with the phase-reversing tube presenting arch in our audio amplifier body; Secondly, we have been respectively equipped with one for installing the cavity shell of loud speaker on the two ends, left and right of phase-reversing tube; Finally our inventive point is embodied in the breach of speaking on phase-reversing tube and is sealed with the opening being positioned at the housing back cover back side by passage and be communicated with.We will analyze the effect of the premises one by one, first the phase-reversing tube presenting arch is provided with in audio amplifier body, first the passage of the circulation being the sound wave that the vibrating diaphragm of loud speaker is formed to after vibration is analyzed in the effect of phase-reversing tube simply, phase-reversing tube is designed to arch, first the length of phase-reversing tube is the increase in, the degree of depth of the length longer guarantee low frequency dive of phase-reversing tube, secondly, the phase-reversing tube presenting arch can reduce the speed that sound wave is propagated in phase-reversing tube, the wind-dryness sound produced in so process just having meaned sound wave transmission is less, reduce the wind-dryness sound of sound wave in phase-reversing tube, just mean that this can obtain cleaner bass, make bass effect distincter.Secondly, by arranging cavity shell, loud speaker is installed, understand simply on the one hand and be equivalent to had a container to go loud speaker is installed, the acting body that cavity shell is the most essential is in fact present: due to the process of the generation of loud speaker, there is vibration in self, this vibrates the sound wave formed, and (sound wave is not here the sound wave that the vibrating diaphragm of loud speaker is formed to after vibration, this sound wave is that we are unwanted) inherently cause covibration to a certain degree, so we are in order to reduce the impact of this sound wave to the full extent, be provided with cavity shell, cavity shell is equivalent to collect these our unwanted sound wave, these sound waves are avoided to cause resonance, form our unwanted noise, affect the definition of our bass.Last point is, the breach of speaking on phase-reversing tube to be sealed with the opening being positioned at the housing back cover back side by passage and is communicated with by we, first opening is opened in the housing back cover back side, also be the speed in order to extend LF-response, ensure the degree of depth of dive, secondly opening is opened in the housing back cover back side by us, we make use of this opening, be equivalent to be come by this opening, extract our audio amplifier, so one, we need not destroy the structure of audio amplifier body, just be equivalent to be provided with a handle, ensure that the structural strength of audio amplifier body and the aesthetics of audio amplifier body, avoid on audio amplifier body and handle is set again, avoid the increase of material cost and cost of labor, by above-mentioned rational design, control the cost of manufacture of our audio amplifier intrinsic single.
As further improvement, on the cavity inner wall of described cavity shell or cavity bottom surface is provided with sound absorbing layer.The object that employing designs like this is, cavity shell is equivalent to collect these our unwanted sound wave, these sound waves are avoided to cause resonance, form our unwanted noise, but so cavity shell effect that arranges also does not have best effect, we are on the cavity inner wall of cavity shell or in cavity bottom surface is provided with sound absorbing layer, can completely cut off these our unwanted sound wave better, prevent these sound waves from causing resonance to form our unwanted noise.
As further improvement, described housing back cover entirety presents by the curved of the both sides of housing back cover towards the median rise of housing back cover; Described housing front shroud entirety presents by the curved of the both sides of housing front shroud towards the median rise of housing front shroud.The object that employing designs like this is, audio amplifier intrinsic single is designed to curved by us, mainly in order to expand the radiating surface of sound wave (sound wave that the vibrating diaphragm of loud speaker vibrates forward and produces), there is good auditory effect in so each corner being within doors placed with this audio amplifier that makes.
As further improvement, described opening presents by the bell mouth shape expanded outwardly in housing back cover.The object adopting design is like this designed to by opening, by the bell mouth shape expanded outwardly in housing back cover, diffuse into the radiating surface of phase-reversing tube bass out, and describing simply is exactly that more bass can flow out from phase-reversing tube, ensure that the definition of bass.
As further improvement, the cross section of described passage presents hyperbolia.The object that employing designs like this is, first be ensure that opening to be sealed with breach by passage to be communicated with, connect between three and do not occur corner, the transmission of sound wave can not be affected, sound deflection is made to reduce to minimum, be not easy to produce harmful standing wave composition, not easily cause the response honeybee paddy of Mid Frequency, defect that the directive property of medium-high frequency narrows; Secondly become the cross section of passage to present hyperbolia channels designs, mean that more sound wave can flow out to the external world by passage from phase-reversing tube, be equivalent to we obtain more LF-response.
As further improvement, described in stretch out the two ends, left and right of the phase-reversing tube outside cavity shell port surface be towards the inclined-plane of the opening surface of housing back cover.The object that employing designs like this is, that sound wave in order to make the vibrating diaphragm of more multi-loudspeaker produce to after vibration enters into phase-reversing tube, only ensure that enough sound waves enter in phase-reversing tube, finally could realize a good LF-response, realize good bass effect.
As further improvement, described phase-reversing tube comprises half under half on the phase-reversing tube of the shaft centre line horizontal segmentation of phase-reversing tube and phase-reversing tube; Under described passage and phase-reversing tube, half is integral type structure, and on described cavity shell and phase-reversing tube, half is integral type structure.The object that employing designs like this is, be mainly reflected in manufacturing process, first under passage and phase-reversing tube, half is integral type structure, so one comes us can directly adopt mold injection molding technique, and conveniently directly processing, is integral type structure by half under passage and phase-reversing tube, when adopting mold injection molding, adopt separately mold injection molding to compare than half under passage or phase-reversing tube, the demoulding is convenient, kills two birds with one stone; Be integral type structure by half in cavity shell and phase-reversing tube, there is above-mentioned advantage equally.
As further improvement, the inwall of described phase-reversing tube is provided with bitumen layer or is provided with multiple concave point.The object that employing designs like this is, by being provided with bitumen layer or being provided with multiple concave point on the inwall of phase-reversing tube, be mainly reflected in, our unwanted sound wave can be entered in phase-reversing tube, these sound waves have caused by resonance, the energy of these sound waves is relatively little, we by being provided with bitumen layer or being provided with multiple concave point on the inwall of phase-reversing tube, understanding simply is when making these sound waves be provided with bitumen layer by inwall or be provided with the phase-reversing tube of multiple concave point, by the refraction that these sound waves and inside pipe wall occur, diffraction, the work such as reflection, energy is more and more less, the LF-response of these our unwanted sound waves to us is avoided to impact, thus ensure to obtain bass effect better.
As further improvement, on described phase-reversing tube, the two ends, left and right of half are all stretched out outside the lower wall of cavity shell, and under described phase-reversing tube, the two ends, left and right of half are positioned at the center position at the cavity shell back side.The object that employing designs like this is, that sound wave in order to make the vibrating diaphragm of more multi-loudspeaker produce to after vibration enters into phase-reversing tube, only ensure that enough sound waves enter in phase-reversing tube, finally could realize a good LF-response, realize good bass effect.
As further improvement, the air line distance at described two ends, phase-reversing tube left and right equals the length of 0.6-0.8 housing back cover transverse direction doubly; The center of described phase-reversing tube equals the height of 0.6-0.8 housing back cover longitudinal direction doubly to the vertical range of the end face at two ends, phase-reversing tube left and right.The object that employing designs like this is, the length of 0.6-0.8 housing back cover transverse direction is doubly equaled by the air line distance at two ends, phase-reversing tube left and right, the center of phase-reversing tube equals the design of the height of 0.6-0.8 housing back cover longitudinal direction doubly to the vertical range of the end face at two ends, phase-reversing tube left and right, farthest ensure that the design length of phase-reversing tube, thus ensure the degree of depth of low frequency dive, secondly, reduce the speed that sound wave is propagated in phase-reversing tube, the wind-dryness sound produced in so process just having meaned sound wave transmission is less, reduce the wind-dryness sound of sound wave in phase-reversing tube, just mean that this can obtain cleaner bass, make bass effect distincter.
Accompanying drawing explanation
Fig. 1 is the part explosive view of all parts of the present invention.
Fig. 2 is the structure chart of entirety of the present invention.
Fig. 3 is the front elevation that phase-reversing tube of the present invention combines with housing.
Fig. 4 is the structural representation at Fig. 3 back side.
Fig. 5 is the front elevation that the phase-reversing tube under another form of the present invention combines with housing.
Fig. 6 is the sectional view of opening of the present invention, passage and phase-reversing tube triplicity.
Fig. 7 is the front view of the parts of housing back cover inside of the present invention.
Fig. 8 is the schematic rear view of the parts in Fig. 7.
Shown in figure: 1, audio amplifier body, 2, housing back cover, 201, opening, 3, phase-reversing tube, 301, half on phase-reversing tube, 302, half under phase-reversing tube, 303, breach, 4, cavity shell, 5, passage, 6, reinforcing prop, 601, screwed hole, 7, housing front shroud, 701, grid panel, 702, dividing plate is installed.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Embodiment one
A kind of phase inverted cabinet of the present invention, comprises audio amplifier body 1, be the housing back cover 2 of opening surface and the housing front shroud 7 that is connected with the opening surface edge of housing back cover 2 before described audio amplifier body 1 comprises, described housing front shroud 7 comprises grid panel 701 and the installation dividing plate 702 for installing loud speaker, described installation dividing plate 702 is located between grid panel 701 and housing back cover 2, be specifically, the edge of housing back cover 2 is provided with screwed hole, housing front shroud 7(installs dividing plate 702) edge be provided with the screwed hole that the screwed hole that is provided with the edge of housing back cover 2 matches, so one, facilitate being spirally connected of housing back cover 2 and housing front shroud 7, the words of next, the inwall of housing back cover 2 also has reinforcement that is latticed or irregular arrangement, the effect of the energy weakening resonant acoustic wave is played in so design, described housing back cover 2 entirety presents by the curved of the both sides of housing back cover 2 towards the median rise of housing back cover 2, described housing front shroud 7 entirety presents by the curved of the both sides of housing front shroud 7 towards the median rise of housing front shroud 7, so structural design, audio amplifier body 1 entirety is made to present a curved structure, the radiating surface of sound wave is wider, described housing back cover 2 internal fixtion has the phase-reversing tube 3 of arch, realize fixing process, primarily of following approach, the cell body with the mating shapes of housing back cover 2 is provided with in housing back cover 2, phase-reversing tube 3 is embedded in cell body, or be provided with that reinforcing prop surrounds with structure that the is mating shapes of housing back cover 2 in housing back cover 2, phase-reversing tube 3 is embedded in wherein or, be spirally connected with these reinforcing props, final realization is provided with the phase-reversing tube 3 of arch at housing back cover 2 internal fixtion.
The outer wall of described phase-reversing tube 3 is provided with sound-absorbing material, these sound-absorbing materials are exactly bitumen layer in fact, we are by certain technique, bitumen layer is coated onto uniformly on the outer wall of phase-reversing tube 3, the object of such design is, the sound wave caused by resonance, when encountering the outer wall of phase-reversing tube, the energy of sound wave can be reduced, thus the impact that these sound waves cause can be reduced, the air line distance at described phase-reversing tube about 3 two ends equals the length of 0.6-0.8 housing back cover 2 transverse direction doubly, in accompanying drawing 7, the air line distance at phase-reversing tube about 3 two ends identifies out with l, the length of housing back cover 2 transverse direction, be identify out with L, the center of described phase-reversing tube 3 equals the height of 0.6-0.8 housing back cover 2 longitudinal direction doubly to the end face vertical range at phase-reversing tube about 3 two ends, in accompanying drawing 7, the center of phase-reversing tube 3 is to the vertical range of the end face at phase-reversing tube about 3 two ends, identify out with h, the height of housing back cover 2 longitudinal direction, be identify out with H, described phase-reversing tube 3 comprises half 302 under half 301 on the phase-reversing tube of the shaft centre line horizontal segmentation of phase-reversing tube 3 and phase-reversing tube, our phase-reversing tube 3 is bonded by adhesives such as glue by half 302 under half on phase-reversing tube 301 and phase-reversing tube in fact, before again they being bonded between the two, under half 301 that what first we carried out is on phase-reversing tube or phase-reversing tube in half 302, or on phase-reversing tube under half 301 and phase-reversing tube in half 302, by certain technique, bitumen layer is coated onto uniformly on the inwall of half 302 under half 301 on phase-reversing tube or phase-reversing tube, or by certain technique, realize under half 301 or phase-reversing tube, half 302 arranging concave point on phase-reversing tube, the inwall finally achieving phase-reversing tube 3 is provided with bitumen layer or is provided with multiple concave point.
Described passage 5 is integral type structure with half 302 under phase-reversing tube, and described cavity shell 4 is integral type structure with half 301 on phase-reversing tube; The two ends, left and right of described phase-reversing tube 3 are towards the bottom of housing back cover 2; The two ends, left and right of described phase-reversing tube 3 are fixed with respectively one for installing the cavity shell 4 of loud speaker, on the cavity inner wall of described cavity shell 4 or cavity bottom surface is provided with sound absorbing layer; The cavity inner wall of described cavity shell 4 is also provided with reinforcing prop 6, and the end face of reinforcing prop 6 is provided with screwed hole 601; The opening surface of each described cavity shell 4 is towards the opening surface of housing back cover 2; The two ends, left and right of described phase-reversing tube 3 are all stretched out outside the lower wall of cavity shell 4, described in stretch out the two ends, left and right of the phase-reversing tube 3 outside cavity shell 4 port surface be towards the inclined-plane of the opening surface of housing back cover 2; The back side of described housing back cover 2 is provided with opening 201, and described opening 201 presents by the bell mouth shape expanded outwardly in housing back cover 2; The tube wall of the inwall after housing back cover 2 of the phase-reversing tube 3 between two described cavity shell 4 offers breach 303, between described opening 201 and breach 303, is provided with the passage 5 of hollow; The cross section of described passage 5 presents hyperbolia; Described opening 201 is sealed with breach 303 by passage 5 and is communicated with.
Embodiment two
A kind of phase inverted cabinet of the present invention, comprises audio amplifier body 1, be the housing back cover 2 of opening surface and the housing front shroud 7 that is connected with the opening surface edge of housing back cover 2 before described audio amplifier body 1 comprises, described housing front shroud 7 comprises grid panel 701 and the installation dividing plate 702 for installing loud speaker, described installation dividing plate 702 is located between grid panel 701 and housing back cover 2, be specifically, the edge of housing back cover 2 is provided with screwed hole, housing front shroud 7(installs dividing plate 702) edge be provided with the screwed hole that the screwed hole that is provided with the edge of housing back cover 2 matches, so, facilitate being spirally connected of housing back cover 2 and housing front shroud 7, the words of next, the inwall of housing back cover 2 also has reinforcement that is latticed or irregular arrangement, the effect of the energy weakening resonant acoustic wave is played in so design, described housing back cover 2 entirety presents by the curved of the both sides of housing back cover 2 towards the median rise of housing back cover 2, described housing front shroud 7 entirety presents by the curved of the both sides of housing front shroud 7 towards the median rise of housing front shroud 7, so structural design, audio amplifier body 1 entirety is made to present a curved structure, the radiating surface of sound wave is wider, described housing back cover 2 internal fixtion has the phase-reversing tube 3 of arch, realize fixing process, primarily of following approach, the cell body with the mating shapes of housing back cover 2 is provided with in housing back cover 2, phase-reversing tube 3 is embedded in cell body, or be provided with that reinforcing prop surrounds with structure that the is mating shapes of housing back cover 2 in housing back cover 2, phase-reversing tube 3 is embedded in wherein, or, be spirally connected with these reinforcing props, final realization is provided with the phase-reversing tube 3 of arch at housing back cover 2 internal fixtion.
The outer wall of described phase-reversing tube 3 is provided with sound-absorbing material, these sound-absorbing materials are exactly bitumen layer in fact, we are by certain technique, bitumen layer is coated onto uniformly on the outer wall of phase-reversing tube 3, the object of such design is, the sound wave caused by resonance, when encountering the outer wall of phase-reversing tube, the energy of sound wave can be reduced, thus the impact that these sound waves cause can be reduced, the air line distance at described phase-reversing tube about 3 two ends equals the length of 0.6-0.8 housing back cover 2 transverse direction doubly, in accompanying drawing 7, the air line distance at phase-reversing tube about 3 two ends identifies out with l, the length of housing back cover 2 transverse direction, be identify out with L, the center of described phase-reversing tube 3 equals the height of 0.6-0.8 housing back cover 2 longitudinal direction doubly to the end face vertical range at phase-reversing tube about 3 two ends, in accompanying drawing 7, the center of phase-reversing tube 3 is to the vertical range of the end face at phase-reversing tube about 3 two ends, identify out with h, the height of housing back cover 2 longitudinal direction, be identify out with H, described phase-reversing tube 3 comprises half 302 under half 301 on the phase-reversing tube of the shaft centre line horizontal segmentation of phase-reversing tube 3 and phase-reversing tube, our phase-reversing tube 3 is bonded by adhesives such as glue by half 302 under half on phase-reversing tube 301 and phase-reversing tube in fact, before again they being bonded between the two, under half 301 that what first we carried out is on phase-reversing tube or phase-reversing tube in half 302, or on phase-reversing tube under half 301 and phase-reversing tube in half 302, by certain technique, bitumen layer is coated onto uniformly on the inwall of half 302 under half 301 on phase-reversing tube or phase-reversing tube, or by certain technique, realize under half 301 or phase-reversing tube, half 302 arranging concave point on phase-reversing tube, the inwall finally achieving phase-reversing tube 3 is provided with bitumen layer or is provided with multiple concave point.
Described passage 5 is integral type structure with half 302 under phase-reversing tube, and described cavity shell 4 is integral type structure with half 301 on phase-reversing tube; The two ends, left and right of described phase-reversing tube 3 are towards the bottom of housing back cover 2; The two ends, left and right of described phase-reversing tube 3 are fixed with respectively one for installing the cavity shell 4 of loud speaker, on the cavity inner wall of described cavity shell 4 or cavity bottom surface is provided with sound absorbing layer; The cavity inner wall of described cavity shell 4 is also provided with reinforcing prop 6, and the end face of reinforcing prop 6 is provided with screwed hole 601; The opening surface of each described cavity shell 4 is towards the opening surface of housing back cover 2; The two ends, left and right of described phase-reversing tube 3 are all stretched out and are referred to outside cavity shell 4 that the two ends, left and right of half 301 on phase-reversing tube are all stretched out outside the lower wall of cavity shell 4, and under described phase-reversing tube, the two ends, left and right of half 302 are positioned at the center position at cavity shell 4 back side; The back side of described housing back cover 2 is provided with opening 201, and described opening 201 presents by the bell mouth shape expanded outwardly in housing back cover 2; The tube wall of the inwall after housing back cover 2 of the phase-reversing tube 3 between two described cavity shell 4 offers breach 303, between described opening 201 and breach 303, is provided with the passage 5 of hollow; The cross section of described passage 5 presents hyperbolia; Described opening 201 is sealed with breach 303 by passage 5 and is communicated with.
Claims (10)
1. a phase inverted cabinet, comprises audio amplifier body (1); It is characterized in that: be the housing back cover (2) of opening surface and the housing front shroud (7) that is connected with the opening surface edge of housing back cover (2) before described audio amplifier body (1) comprises; Described housing back cover (2) internal fixtion has the phase-reversing tube (3) of arch, and the two ends, left and right of described phase-reversing tube (3) are towards the bottom of housing back cover (2); The two ends, left and right of described phase-reversing tube (3) are fixed with respectively one for installing the cavity shell (4) of loud speaker, the opening surface of each described cavity shell (4) is towards the opening surface of housing back cover (2); The two ends, left and right of described phase-reversing tube (3) are all stretched out outside the lower wall of cavity shell (4); The back side of described housing back cover (2) is provided with opening (201), phase-reversing tube (3) between two described cavity shell (4) offers breach (303) on the tube wall of housing back cover (2) inwall afterwards, is provided with passage (5) between described opening (201) and breach (303); Described opening (201) to be sealed with breach (303) by passage (5) and is communicated with.
2. a kind of phase inverted cabinet according to claim 1, is characterized in that: on the cavity inner wall of described cavity shell (4) or cavity bottom surface is provided with sound absorbing layer.
3. a kind of phase inverted cabinet according to claim 1, is characterized in that: described housing back cover (2) entirety presents by the curved of the both sides of housing back cover (2) towards the median rise of housing back cover (2); Described housing front shroud (7) entirety presents by the curved of the both sides of housing front shroud (7) towards the median rise of housing front shroud (7).
4. a kind of phase inverted cabinet according to claim 1, is characterized in that: described opening (201) presents by the bell mouth shape expanded outwardly in housing back cover (2).
5. a kind of phase inverted cabinet according to claim 1, is characterized in that: the cross section of described passage (5) presents hyperbolia.
6. a kind of phase inverted cabinet according to claim 1, is characterized in that: described in stretch out the two ends, left and right of cavity shell (4) phase-reversing tube outward (3) port surface be towards the inclined-plane of the opening surface of housing back cover (2).
7. a kind of phase inverted cabinet according to claim 1, is characterized in that: described phase-reversing tube (3) comprises half (302) under half (301) on the phase-reversing tube of the shaft centre line horizontal segmentation of phase-reversing tube (3) and phase-reversing tube; Described passage (5) is integral type structure with half (302) under phase-reversing tube, and described cavity shell (4) is integral type structure with half (301) on phase-reversing tube.
8. a kind of phase inverted cabinet according to claim 1 or 7, is characterized in that: the inwall of described phase-reversing tube (3) is provided with bitumen layer or is provided with multiple concave point.
9. a kind of phase inverted cabinet according to claim 7, it is characterized in that: on described phase-reversing tube, the two ends, left and right of half (301) are all stretched out outside the lower wall of cavity shell (4), under described phase-reversing tube, the two ends, left and right of half (302) are positioned at the center position at cavity shell (4) back side.
10. want a kind of phase inverted cabinet described in 1 according to right, it is characterized in that: the air line distance at described phase-reversing tube (3) two ends, left and right equals the horizontal length of 0.6-0.8 housing back cover (2) doubly; The center of described phase-reversing tube (3) equals the longitudinal height of 0.6-0.8 housing back cover (2) doubly to the vertical range of the end face at phase-reversing tube (3) two ends, left and right.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410709883.3A CN104363541B (en) | 2014-11-28 | 2014-11-28 | A kind of phase inverted cabinet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410709883.3A CN104363541B (en) | 2014-11-28 | 2014-11-28 | A kind of phase inverted cabinet |
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| CN104363541A true CN104363541A (en) | 2015-02-18 |
| CN104363541B CN104363541B (en) | 2018-02-16 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110460935A (en) * | 2019-09-19 | 2019-11-15 | 深圳东原电子有限公司 | A kind of hidden phase-reversing tube bar speaker structure |
| CN112788492A (en) * | 2019-11-04 | 2021-05-11 | 海信视像科技股份有限公司 | Display device and speaker assembly |
| CN116782069A (en) * | 2023-08-23 | 2023-09-19 | 深圳市锐豪科技有限公司 | Portable sound equipment that can make an uproar falls |
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| CN110460935A (en) * | 2019-09-19 | 2019-11-15 | 深圳东原电子有限公司 | A kind of hidden phase-reversing tube bar speaker structure |
| CN112788492A (en) * | 2019-11-04 | 2021-05-11 | 海信视像科技股份有限公司 | Display device and speaker assembly |
| CN116782069A (en) * | 2023-08-23 | 2023-09-19 | 深圳市锐豪科技有限公司 | Portable sound equipment that can make an uproar falls |
| CN116782069B (en) * | 2023-08-23 | 2023-11-14 | 深圳市锐豪科技有限公司 | Portable sound equipment that can make an uproar falls |
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|---|---|
| CN104363541B (en) | 2018-02-16 |
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