WO2021047636A1 - 密闭式音箱、显示装置和用于密闭式音箱的测试方法 - Google Patents
密闭式音箱、显示装置和用于密闭式音箱的测试方法 Download PDFInfo
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- WO2021047636A1 WO2021047636A1 PCT/CN2020/114768 CN2020114768W WO2021047636A1 WO 2021047636 A1 WO2021047636 A1 WO 2021047636A1 CN 2020114768 W CN2020114768 W CN 2020114768W WO 2021047636 A1 WO2021047636 A1 WO 2021047636A1
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- central axis
- size
- sound box
- plug
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- 238000000034 method Methods 0.000 title abstract description 4
- 238000009423 ventilation Methods 0.000 claims description 16
- 238000010998 test method Methods 0.000 claims description 7
- 239000013013 elastic material Substances 0.000 claims description 4
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- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000002596 correlated effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 230000014509 gene expression Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2807—Enclosures comprising vibrating or resonating arrangements
- H04R1/2815—Enclosures comprising vibrating or resonating arrangements of the bass reflex type
- H04R1/2823—Vents, i.e. ports, e.g. shape thereof or tuning thereof with damping material
- H04R1/2826—Vents, i.e. ports, e.g. shape thereof or tuning thereof with damping material for loudspeaker transducers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
- G01M3/3281—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators removably mounted in a test cell
- G01M3/329—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators removably mounted in a test cell for verifying the internal pressure of closed containers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
- H04R1/028—Casings; Cabinets ; Supports therefor; Mountings therein associated with devices performing functions other than acoustics, e.g. electric candles
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2807—Enclosures comprising vibrating or resonating arrangements
- H04R1/283—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm
- H04R1/2834—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm for loudspeaker transducers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R29/00—Monitoring arrangements; Testing arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R29/00—Monitoring arrangements; Testing arrangements
- H04R29/001—Monitoring arrangements; Testing arrangements for loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R29/00—Monitoring arrangements; Testing arrangements
- H04R29/001—Monitoring arrangements; Testing arrangements for loudspeakers
- H04R29/003—Monitoring arrangements; Testing arrangements for loudspeakers of the moving-coil type
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
- H04R2499/10—General applications
- H04R2499/15—Transducers incorporated in visual displaying devices, e.g. televisions, computer displays, laptops
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
Definitions
- the present disclosure relates to the technical field of sound boxes, in particular to an enclosed sound box, a display device including the enclosed sound box, and a test method for the enclosed sound box.
- the speaker is the terminal of the entire sound system, which is a device that converts audio electric energy into corresponding sound energy and radiates it into the space.
- Speakers generally include main components such as speakers, cabinets, and crossovers. Among them, the cabinet can be used to eliminate the acoustic short circuit of the loudspeaker, suppress the acoustic resonance of the loudspeaker and broaden the frequency response range of the loudspeaker, thereby reducing the distortion of the sound.
- the speakers can include various forms such as closed type, inverted type and band-pass type.
- the loudspeaker of the enclosed sound box is installed in a completely enclosed box. In this way, the reverse sound waves radiated by the diaphragm of the loudspeaker are completely blocked by the box, and will not go outside the box and directly in front of the diaphragm. The phase sound waves cancel each other out and solve the "acoustic short circuit" problem.
- a closed speaker including:
- a chamber, the chamber is surrounded by the box;
- a through hole which penetrates the box body and communicates with the chamber
- a plug, at least a part of the plug is inserted into the through hole
- the plug includes a plug body and a vent hole penetrating the plug body, and the vent hole communicates with the cavity and the outer space of the box body.
- the plug includes a central axis extending along the length of the plug main body, and the size of the ventilation hole in the direction perpendicular to the central axis is smaller than the size of the through hole in the direction perpendicular to the central axis.
- the size of the ventilation hole in the direction perpendicular to the central axis is less than or equal to 1/10 of the size of the through hole in the direction perpendicular to the central axis.
- the size of the ventilation hole in the direction perpendicular to the central axis is related to the volume of the chamber.
- the size of the ventilation hole in the direction along the central axis is associated with the size of the ventilation hole in the direction perpendicular to the central axis.
- the plug body includes a head, a neck, and a tail, the neck is located between the head and the tail in the direction along the central axis, and the neck is perpendicular to the
- the size in the direction of the central axis is smaller than the size of the head in the direction perpendicular to the central axis.
- the ventilation hole penetrates through the head, the neck and the tail in the direction along the central axis.
- the tail portion includes a tapered portion and a cylindrical portion, the tapered portion is closer to the neck than the cylindrical portion, and the size of the tapered portion in the direction perpendicular to the central axis is from The neck portion gradually decreases toward the cylindrical portion.
- the portion of the tapered portion close to the neck has a first size in a direction perpendicular to the central axis, and the size of the neck in a direction perpendicular to the central axis is smaller than that of the taper The first size of the department.
- the through hole includes a first through hole and a second through hole, and the size of the first through hole in a direction perpendicular to the central axis is larger than that of the second through hole in a direction perpendicular to the central axis. The size in the direction.
- the hole wall of the first through hole is in contact with the outer surface of the head, and the hole wall of the second through hole is in contact with the outer surface of the neck.
- the head of the stopper includes a first stepped surface facing the neck
- the box body includes a protruding portion
- the protruding portion includes a first surface facing the head, the first stepped surface and The first surface contacts.
- the tapered portion of the stopper includes a second step surface facing the neck portion
- the protrusion includes a second surface facing the tail portion
- the second step surface is in contact with the second surface
- the plug body is composed of an elastic material.
- the tail is located in the chamber.
- the size of the neck in the direction along the central axis is equal to the size of the second through hole in the direction along the central axis
- the size of the head in the direction along the central axis is equal to The size is equal to the size of the first through hole in the direction along the central axis.
- the orthographic projection of any one of the through hole, the plug main body, and the vent hole in a direction perpendicular to the central axis is a circle.
- the enclosed sound box includes only one plug.
- a display device including the above-mentioned enclosed sound box.
- test method for the above-mentioned enclosed sound box including:
- Figure 1 is a schematic cross-sectional view of a closed sound box in the related art
- Figure 2 is a schematic cross-sectional view of another enclosed sound box in the related art
- Figure 3 is a front view of a closed sound box according to an embodiment of the present disclosure.
- Figure 4 is a rear view of a closed sound box according to an embodiment of the present disclosure.
- Figure 5 is a top view of a closed sound box according to an embodiment of the present disclosure.
- Fig. 6 is a side view of a closed sound box according to an embodiment of the present disclosure.
- Fig. 7 is a cross-sectional view of a closed sound box according to an embodiment of the present disclosure.
- Fig. 8 shows a partial enlarged view of a closed sound box according to an embodiment of the present disclosure, which schematically shows the plug in an assembled state;
- Fig. 9 shows a partial enlarged view of a closed sound box according to an embodiment of the present disclosure, which schematically shows the plug in a separated state;
- Fig. 10A is a front view of a plug included in a closed sound box according to an embodiment of the present disclosure
- Fig. 10B is a top view of a plug included in a closed sound box according to an embodiment of the present disclosure
- FIG. 10C is a cross-sectional view of a plug included in the enclosed sound box according to an embodiment of the present disclosure.
- FIG. 11 is a schematic diagram of a display device including the enclosed sound box according to an embodiment of the present disclosure.
- Fig. 12 is a flowchart of a test method for a closed sound box according to an embodiment of the present disclosure.
- central axis refers to the axis of an object or a hole along its length extending direction. Generally, the object or the hole extends along its central axis. It should be understood that the central axis is an imaginary line used to indicate the extending direction of the object or the hole, and does not mean that the object or the hole has a solid central axis; moreover, the direction of an object or a hole
- the central axis is not necessarily a straight line, it can be a straight line, a curve or a polyline.
- the expressions "dimension in the direction perpendicular to the central axis” and “dimension in the direction along the central axis” are used to indicate that the object or the hole is in two directions size of.
- the size in the direction perpendicular to the central axis refers to the diameter of the through hole or the vent hole
- the size along the center refers to the length of the through hole or the vent hole.
- the embodiments of the present disclosure provide a closed sound box, a display device including the closed sound box, and a test method for the closed sound box.
- Fig. 1 is a schematic cross-sectional view of a closed sound box in the related art.
- a closed sound box generally includes main components such as a cabinet 1 and a speaker 2.
- the box body 1 surrounds and forms a cavity 3, and the loudspeaker 2 is installed in the box body 1 to form a closed cavity 3.
- the reverse-phase sound waves radiated by the diaphragm of the loudspeaker are completely blocked by the box, and will not go outside the box and cancel out the positive-phase sound waves in front of the diaphragm, which solves the "acoustic short circuit" problem.
- the space in the box 1 (ie, the chamber 3) is completely isolated from the space outside the box 1, so that when the sound box is in different environments (such as low-pressure environment, high-pressure environment)
- the air pressure in the space inside the box 1 (ie chamber 3) is not consistent with the air pressure in the space outside the box 1, that is, the air pressure inside and outside the box cannot be balanced, which affects the acoustic characteristics of the speaker, and even affects The life span of the speaker.
- some heat will accumulate inside the cabinet. Since the space in the cabinet 1 (ie, the chamber 3) is completely isolated from the space outside the cabinet 1, the accumulated heat cannot be discharged, which further affects the cabinet. The acoustic characteristics even affect the life of the speakers.
- the enclosed sound box has no holes for inflation, the air tightness test cannot be performed after the enclosed sound box product is manufactured, which is not conducive to ensuring the stability of product quality.
- Fig. 2 is a schematic cross-sectional view of another enclosed sound box in the related art.
- the sound box includes main components such as a cabinet 1 and a speaker 2.
- the box body 1 surrounds and forms a cavity 3, and the loudspeaker 2 is installed in the box body 1.
- a vent 4 is provided on the shell of the box 1.
- the pore size of the vent hole 4 is generally designed to be larger.
- the large-aperture vent 4 may generate a large airflow sound, that is, it may cause abnormal sound, thereby affecting the acoustic characteristics of the speaker.
- FIG. 3 is a front view of the enclosed sound box according to an embodiment of the present disclosure
- FIG. 4 is a rear view of the enclosed sound box according to an embodiment of the present disclosure
- FIG. 5 is a top view of the enclosed sound box according to an embodiment of the present disclosure
- FIG. 6 is A side view of a closed sound box according to an embodiment of the present disclosure.
- the sound box includes: a box body 10, a speaker 20, a chamber 30 and a radiator 40.
- the box body 10 defines the cavity 30.
- the box body 10 includes a front shell 11 and a rear shell 12, and the front shell 11 and the rear shell 12 are assembled together to form a cavity 30.
- a part of the front shell 11 constitutes the sound panel 14 of the sound box.
- a part of the speaker 20 is disposed in the cavity 30, and another part of the speaker 20 is disposed on the sound output panel 14. As shown in FIG.
- the speaker is a device that converts electrical signals into acoustic signals, and it mainly includes components such as coils, magnets, and paper cones.
- the amplifier outputs current (alternating current) signals of varying sizes, and the coil moves under the action of the magnetic field through the coil.
- the coil is connected to the paper cone to drive the paper cone to vibrate, and then the vibration of the paper cone pushes the air to produce sound.
- the speaker 20 may be a woofer speaker.
- the specific structure of the speaker can refer to the specific structure of the speaker in the related art, which will not be repeated here.
- the radiator 40 may be a passive radiator.
- the passive radiator may include a paper cone but not a coil and a magnet.
- the speaker 20 serves as an active unit
- the radiator 40 serves as a passive unit.
- the radiator 40 passively emits sound under the driving of the active unit 20 to the air in the chamber 30.
- the specific structure of the radiator 40 can refer to the specific structure of the passive radiator in the related art, which will not be repeated here.
- the sound box may include one speaker 20 and multiple radiators 40.
- one radiator 40 can be arranged on the sound panel 14, one radiator 40 can be arranged on the rear shell 12, and four radiators 40 can be arranged on the four corners of the front shell 11, respectively.
- the number and positions of the radiators shown in the figure are only exemplary, and the embodiments of the present disclosure do not specifically limit the number and positions of the radiators.
- Both the loudspeaker 20 and the radiator 40 are fixed on the front shell 11 and/or the rear shell 12 of the cabinet 10 by a fixing element 50.
- the fixing element may be a screw.
- Fig. 7 is a cross-sectional view of a closed sound box according to an embodiment of the present disclosure.
- the sound box further includes a plug 60.
- the sound box includes a plug 60, and the one plug 60 is disposed at a position near the lower side of the rear shell 12.
- the embodiments of the present disclosure are not intended to specifically limit the location of the plug. In other embodiments, the plug 60 may be placed at any other suitable location.
- FIG. 8 shows a partial enlarged view of the enclosed sound box according to an embodiment of the present disclosure, which schematically shows the plug in an assembled state
- FIG. 9 shows a partial enlarged view of the enclosed sound box according to an embodiment of the present disclosure , which schematically shows the plug in a separated state.
- the sound box includes a through hole 70 provided on the box body 10.
- the through hole 70 may penetrate the box body 10.
- the through hole 70 may be provided on the rear shell 12 of the box body 10 and penetrate therethrough. After the shell 12.
- the through hole 70 communicates with the space outside the chamber 30 and the box body 10.
- the plug 60 is inserted into the through hole 70.
- FIG. 10A is a front view of a plug included in a closed speaker according to an embodiment of the present disclosure
- FIG. 10B is a top view of a plug included in a closed speaker according to an embodiment of the present disclosure
- FIG. 10C is a top view of a plug included in the closed speaker according to an embodiment of the present disclosure.
- the plug 60 includes a plug main body 61 and a vent 62 penetrating the plug main body 61. When the plug 60 is inserted into the through hole 70, the vent hole 62 communicates with the space outside the chamber 30 and the box body 10.
- the plug body 61 includes a head 611, a neck 612 and a tail 613.
- the neck 612 is located between the head 611 and the tail 613.
- the tail portion 613 may include a tapered portion 6131 and a cylindrical portion 6132.
- the plug 60 may include a central axis 60S extending along its length. It should be understood that the central axis 60S is an imaginary straight line, which does not mean that the plug 60 has a physical central axis.
- the vent 62 and the plug body 61 both extend along the central axis 60S.
- the orthographic projections of the vent 62 and the plug main body 61 in the direction perpendicular to the central axis 60S both have a circular shape, as shown in FIG. 10B.
- the center of the orthographic projection of the ventilation hole 62 in the direction perpendicular to the central axis 60S for example, the center of the circle 62 in FIG. 10B
- the orthographic projection of the plug body 61 in the direction perpendicular to the central axis 60S The centers of (for example, the center of circle 611 in FIG. 10B) coincide.
- the head portion 611, the neck portion 612, the tapered portion 6131, and the cylindrical portion 6132 are sequentially arranged in a direction parallel to the central axis 60S.
- the size of the tapered portion 6131 in the direction perpendicular to the central axis 60S gradually decreases from the neck portion 612 toward the cylindrical portion 6132.
- the portion of the tapered portion 6131 close to the neck 612 has a first size
- the portion of the tapered portion 6131 close to the cylindrical portion 6132 has a second size
- the first size is larger than the second size.
- the size of the neck 612 in the direction perpendicular to the central axis 60S is smaller than the size of the head 611 in the direction perpendicular to the central axis 60S (for example, the diameter of the circle 611 in FIG. 10B). ), which is smaller than the first size of the tapered portion 6131 in the direction perpendicular to the central axis 60S (for example, the diameter of the circle 6131 in FIG. 10B).
- a first stepped surface is formed between the head 611 and the neck 612, that is, the surface 614 of the head 611 facing the neck 612;
- a second stepped surface is formed between the neck 612 and the tapered portion 6131, that is, a cone.
- the portion 6131 faces the surface 615 of the neck 612. It should be understood that both the first step surface 614 and the second step surface 615 are farther away from the central axis 60S than the neck 612.
- the through hole 70 takes the form of a stepped hole.
- the through hole 70 may include a central axis 70S extending along its length. It should be understood that the central axis 70S is an imaginary straight line, which does not mean that the through hole 70 has a physical central axis. When the plug 60 is inserted into the through hole 70, the central axis 60S coincides with the central axis 70S. In one example, the orthographic projection of the through hole 70 in the direction perpendicular to the central axis 70S has a circular shape.
- the through hole 70 includes a first through hole 701 and a second through hole 702.
- the size (for example, diameter) of the first through hole 701 in the direction perpendicular to the central axis 70S is larger than that of the second through hole 702 in the direction perpendicular to the central axis 70S.
- the through hole 70 is provided on the rear shell 12 of the box body 10, and the stepped hole 70 will form a stepped structure on the rear shell 12 accordingly.
- the hole wall of the second through hole 702 is closer to the central axis 70S than the hole wall of the first through hole 701, so that the rear shell 12 has a protrusion 121 that is sandwiched between the head 611 Between and the tapered portion 613.
- the protrusion 121 has a first surface 1211 facing the head 611 and a second surface 1212 facing the tapered portion 613.
- the first surface 1211 is in contact with the first step surface 614, and the second surface 1212 is in contact with the second step. Face 615 is in contact.
- the plug 60 is composed of an elastic material such as rubber, silicone, or the like. In this way, the plug 60 can be elastically deformed under the action of an external force. In this way, since rubber, silicone and other materials are relatively soft, it is not easy to produce resonant sound, which will not affect the acoustic characteristics of the speaker.
- the size of the cylindrical portion 6132 of the plug 60 in the direction perpendicular to the central axis 60S may be less than or equal to the size of the second through hole 702 in the direction perpendicular to the central axis 70S (E.g. diameter). In this way, the cylindrical portion 6132 can be easily inserted into the through hole 70 and penetrate the through hole 70 to enter the cavity 30.
- the portion of the tapered portion 6131 close to the neck 612 has a first size
- the portion of the tapered portion 6131 close to the cylindrical portion 6132 has a second size.
- the first size is larger than the second size, that is, the "lower” shown in FIG. "Small on Big" structure.
- the second size is smaller than or equal to the size (for example, diameter) of the second through hole 702 in a direction perpendicular to the central axis 70S
- the first size is larger than the second through hole 702 in a direction perpendicular to the central axis 70S.
- the size (for example, the diameter) of the upper part is smaller than or equal to the size (for example, the diameter) of the first through hole 701 in the direction perpendicular to the central axis 70S.
- the tapered portion 6131 is elastically deformed under the squeezing force of the housing 12, and the structure of "small at the bottom and large at the top" facilitates the tapered portion 6131 to pass through the first The through hole 701 and the second through hole 702 thus enter the chamber 30. After entering the cavity 30, the tapered portion 6131 returns to its original shape, so that the plug 60 will not escape from the through hole 70.
- the size of the neck portion 612 in the direction perpendicular to the central axis 60S may be equal to the size of the second through hole 702 in the direction perpendicular to the central axis 70S, so that the outer surface of the neck portion 612 is aligned with the hole wall of the second through hole 702 contact.
- the size of the neck portion 612 in the direction perpendicular to the central axis 60S may also be slightly larger than the size of the second through hole 702 in the direction perpendicular to the central axis 70S, so that the neck portion 612 and the second through hole 702 A tight fit (ie, an interference fit) is formed between.
- the size of the head 611 in the direction perpendicular to the central axis 60S may be equal to the size of the first through hole 701 in the direction perpendicular to the central axis 70S, so that the outer surface of the head 611 is aligned with the hole wall of the first through hole 701 contact.
- the size of the head 611 in the direction perpendicular to the central axis 60S may also be slightly larger than the size of the first through hole 701 in the direction perpendicular to the central axis 70S, so that the head 611 and the first through hole 701 A tight fit (ie, an interference fit) is formed between.
- the vent hole 62 penetrates the plug body 61, that is, the vent hole 62 penetrates the head 611, the neck 612, the tapered portion 6131 and the cylindrical portion 6132 along the central axis 60S.
- the vent hole 62 communicates with the space outside the chamber 30 and the box body 10.
- the vent 62 can play the role of connecting the space inside and outside the box, so that the air pressure inside and outside the box can be balanced, so that the sound box can be adapted to different environments (for example, low air pressure environment, high air pressure environment).
- the heat accumulated in the box body can also be discharged through the vent hole, which is beneficial to improve the acoustic characteristics of the sound box and prolong the life of the sound box.
- the size of the ventilation hole 62 in the direction perpendicular to the central axis 60S is smaller than any one of the first through hole 701 and the second through hole 702 in the direction perpendicular to the central axis 70S.
- the size in the direction is much smaller than that of any one of the first through hole 701 and the second through hole 702 in a direction perpendicular to the central axis. Dimensions in the direction of 70S.
- “Much smaller” here can be understood as the size of the vent 62 in the direction perpendicular to the central axis 60S and the size of any one of the first through hole 701 and the second through hole 702 in the direction perpendicular to the central axis 70S.
- the size is not on the same order of magnitude.
- the size of the vent 62 in the direction perpendicular to the central axis 60S may be 1 ⁇ m, that is, on the order of micrometers.
- any one of the first through hole 701 and the second through hole 702 The dimension in the direction perpendicular to the central axis 70S can be 1mm, that is, on the millimeter level; for another example, the dimension of the vent 62 in the direction perpendicular to the central axis 60S can be 1mm, that is, on the millimeter level.
- the size of any one of the first through hole 701 and the second through hole 702 in the direction perpendicular to the central axis 70S may be 1 cm or even 1 m, that is, on the centimeter or meter level.
- the size of the ventilation hole 62 in the direction perpendicular to the central axis 60S (for example, the diameter of the circle 62 in FIG. 10B) may be less than or equal to any one of the first through hole 701 and the second through hole 702 in the direction perpendicular to the center axis 60S. 1/10 of the size in the direction of the center axis 70S.
- the air tightness test can be performed when the plug 60 is not inserted into the through hole 70. Because the through hole 70 has a larger aperture, the gas can quickly enter the chamber 30, so that the air tightness test can be quickly completed; After the plug 60 is inserted into the through hole 70, only the vent hole 62 with a smaller diameter remains to connect the space inside and outside the chamber. Because the vent hole 62 has a small pore size, the vent hole 62 achieves a balanced air pressure and discharges heat at the same time. , To avoid the abnormal sound caused by the gas flow, so as not to affect the acoustic characteristics of the speaker. In this way, it is beneficial to improve the acoustic characteristics of the sound box and increase the service life of the sound box.
- the structure of the mold for manufacturing the box body needs to be changed.
- the box body is generally made of hard plastic, wood, and other materials on which it is formed.
- the vents with small apertures will increase the difficulty of manufacturing.
- the plug since the plug is composed of elastic materials such as rubber, silicone, etc., it is possible to use injection molding, molding and other integral molding methods to form a small-diameter vent in the plug, that is, , which is conducive to the manufacture of small pores.
- the size of the ventilation hole 62 in the direction perpendicular to the central axis 60S may be related to the volume of the chamber 30.
- the size of the ventilation hole 62 in the direction perpendicular to the central axis 60S may increase as the volume of the chamber 30 increases.
- the size of the vent hole 62 in the direction perpendicular to the central axis 60S can be designed to be larger; when the volume of the chamber 30 is small, the vent hole 62 is in the direction perpendicular to the central axis 60S.
- the upper size can be designed to be smaller.
- the size (ie, the length) of the ventilation hole 62 along the central axis 60S is associated with the size of the ventilation hole 62 in a direction perpendicular to the central axis 60S (for example, the diameter of the circle 62 in FIG. 10B).
- the size (ie, the length) of the vent 62 along the central axis 60S and the size of the vent 62 in the direction perpendicular to the central axis 60S (for example, the diameter of the circle 62 in FIG. 10B) can be designed so that the flow The flow rate of the airflow through the vent 62 meets the requirements of the design value, for example, the flow rate of the airflow is less than a predetermined flow rate threshold.
- the size (ie, the length) of the vent 62 along the central axis 60S may become smaller as the size of the vent 62 in the direction perpendicular to the central axis 60S (for example, the diameter of the circle 62 in FIG. 10B) becomes smaller.
- the vent 62 can be designed to be shorter; when the size of the vent 62 in the direction perpendicular to the central axis 60S is larger, the vent 62 can be The design is longer. In this way, the flow rate of the airflow passing through the vent hole 62 can meet the requirements of the design value, that is, the flow rate of the airflow passing through the vent hole 62 will not be too fast, thereby avoiding abnormal sound.
- the size of the neck 612 in the direction along the central axis 60S is substantially equal to the size of the second through hole 702 in the direction along the central axis 70S, and the size of the head 611 in the direction along the central axis 60S is substantially equal to The size of the first through hole 701 in the direction along the central axis 70S. In this way, the head and neck of the plug 60 can be accommodated in the first through hole and the second through hole, respectively.
- the number of the plug 60 can be one, and correspondingly, the number of the through hole 70 can also be one. Since the structure of the plug and the through hole will affect the sound characteristics of the speaker, only one plug and one through hole are provided, which is beneficial to design the structure of the plug and the through hole, so as not to affect the design of the speaker as much as possible characteristic.
- vent hole is shown as a straight hole, and correspondingly, the central axis of the vent hole is shown as a straight line.
- the vent hole can be in the form of a curved hole or a bent hole.
- the center axis of the vent hole is a curve or a broken line.
- the orthographic projection of the through hole, the vent hole, and the plug body in the direction perpendicular to the central axis is circular as an example, and the technical concept of the present disclosure is described in detail. However, this The disclosed embodiments are not limited to this. In other embodiments, the orthographic projection of the through hole, the vent hole, and the plug body in the direction perpendicular to the central axis may have other shapes, such as rectangles, squares, hexagons, etc.
- the embodiment of the present disclosure also provides a display device.
- the display device includes a display panel 100 and the sound box 200 provided in the foregoing embodiment.
- the display device may be a display device such as a television.
- the embodiments of the present disclosure are not limited thereto.
- the display device may be any product or component with a display function, such as a smart phone, a tablet computer, a display, a car display, and the like.
- the embodiment of the present disclosure also provides a test method for the enclosed sound box provided by the embodiment of the present disclosure. As shown in FIG. 12, the test method may include steps S121 to S123.
- step S121 before the plug 60 is inserted into the through hole 70, the cavity 30 is inflated through the through hole 70. In this way, since the through hole 70 has a larger diameter, the inflation step can be completed quickly.
- the air tightness test is performed on the sound box.
- the air tightness test may include: blocking the through hole 70; then, using an instrument to detect or observe whether the air leaks in the inflated chamber 30.
- step S123 after the airtightness detection is completed, at least a part of the plug 60 is inserted into the through hole 70.
- the plug 60 can be inflated when the plug 60 is not inserted into the through hole 70. Because the through hole 70 has a larger aperture, the gas can be quickly filled into the chamber 30, so that the air tightness can be quickly completed. Sex test.
- the air pressure inside and outside the box of the sound box can be balanced, and the heat accumulated inside the box can be discharged in time, thereby improving the sound box and the display including it.
- the product quality of the device by designing the structure of the closed sound box, the air pressure inside and outside the box of the sound box can be balanced, and the heat accumulated inside the box can be discharged in time, thereby improving the sound box and the display including it.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
- Casings For Electric Apparatus (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Abstract
Description
Claims (20)
- 一种密闭式音箱,包括:箱体;腔室,所述腔室由所述箱体包围而成;通孔,所述通孔贯穿所述箱体,并且与所述腔室连通;和塞子,所述塞子的至少一部分插入所述通孔中,其中,所述塞子包括塞子主体和贯穿所述塞子主体的透气孔,所述透气孔连通所述腔室与所述箱体的外部空间。
- 根据权利要求1所述的密闭式音箱,其中,所述塞子包括沿塞子主体的长度方向延伸的中心轴线,所述透气孔在垂直于所述中心轴线的方向上的尺寸小于所述通孔在垂直于所述中心轴线的方向上的尺寸。
- 根据权利要求2所述的密闭式音箱,其中,所述透气孔在垂直于所述中心轴线的方向上的尺寸小于等于所述通孔在垂直于所述中心轴线的方向上的尺寸的1/10。
- 根据权利要求2所述的密闭式音箱,其中,所述透气孔在垂直于所述中心轴线的方向上的尺寸与所述腔室的容积相关联。
- 根据权利要求4所述的密闭式音箱,其中,所述透气孔在沿所述中心轴线的方向上的尺寸与所述透气孔在垂直于所述中心轴线的方向上的尺寸相关联。
- 根据权利要求2-5中任一项所述的密闭式音箱,其中,所述塞子主体包括头部、颈部和尾部,所述颈部在沿所述中心轴线的方向上位于所述头部和所述尾部之间,并且所述颈部在垂直于所述中心轴线的方向上的尺寸小于所述头部在垂直于所述中心轴线的方向上的尺寸。
- 根据权利要求6所述的密闭式音箱,其中,所述透气孔在沿所述中心轴线的方向上贯穿所述头部、所述颈部和所述尾部三者。
- 根据权利要求7所述的密闭式音箱,其中,所述尾部包括锥形部和柱形部,所述锥形部比所述柱形部更靠近所述颈部,所述锥形部在垂直于所述中心轴线的方向上的尺寸从所述颈部朝向所述柱形部逐渐减小。
- 根据权利要求8所述的密闭式音箱,其中,所述锥形部靠近所述颈部的部分在垂直于所述中心轴线的方向上具有第一尺寸,所述颈部在垂直于所述中心轴线的方向上的尺寸小于所述锥形部的第一尺寸。
- 根据权利要求9所述的密闭式音箱,其中,所述通孔包括第一通孔和第二通孔,所述第一通孔在垂直于所述中心轴线的方向上的尺寸大于所述第二通孔在垂直于所述中心轴线的方向上的尺寸。
- 根据权利要求10所述的密闭式音箱,其中,所述第一通孔的孔壁与所述头部的外表面接触,所述第二通孔的孔壁与所述颈部的外表面接触。
- 根据权利要求11所述的密闭式音箱,其中,所述塞子的头部包括面向所述颈部的第一台阶面,所述箱体包括突出部,所述突出部包括面向所述头部的第一表面,所述第一台阶面与所述第一表面接触。
- 根据权利要求12所述的密闭式音箱,其中,所述塞子的锥形部包括面向所述颈部的第二台阶面,所述突出部包括面向所述尾部的第二表面,所述第二台阶面与所述第二表面接触。
- 根据权利要求1-5和7-13中任一项所述的密闭式音箱,其中,所述塞子主体由弹性材料构成。
- 根据权利要求8-13中任一项所述的密闭式音箱,其中,所述尾部位于所述腔室内。
- 根据权利要求15所述的密闭式音箱,其中,所述颈部在沿所述中心轴线的方向上的尺寸等于所述第二通孔在沿所述中心轴线的方向上的尺寸,所述头部在沿所述中心轴线的方向上的尺寸等于所述第一通孔在沿所述中心轴线的方向上的尺寸。
- 根据权利要求2-5和7-13中任一项所述的密闭式音箱,其中,所述通孔、所述塞子主体和所述透气孔中的任一个在垂直于所述中心轴线的方向上的正投影为圆形。
- 根据权利要求1-5和7-13中任一项所述的密闭式音箱,其中,所述密闭式音箱包括仅1个所述塞子和1个所述通孔。
- 一种显示装置,包括上述任一项权利要求所述的密闭式音箱。
- 一种用于根据权利要求1所述的密闭式音箱的测试方法,包括:在所述塞子插入所述通孔之前,通过所述通孔往所述腔室中充气;对所述音箱进行气密性检测;以及在所述气密性检测完成之后,将所述塞子的至少一部分插入所述通孔中。
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US11736857B2 (en) | 2023-08-22 |
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