CN110620974B - High pitch loudspeaker and manufacturing method thereof - Google Patents

High pitch loudspeaker and manufacturing method thereof Download PDF

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Publication number
CN110620974B
CN110620974B CN201810631274.9A CN201810631274A CN110620974B CN 110620974 B CN110620974 B CN 110620974B CN 201810631274 A CN201810631274 A CN 201810631274A CN 110620974 B CN110620974 B CN 110620974B
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China
Prior art keywords
panel
tweeter
inverted concave
diaphragm
concave diaphragm
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CN201810631274.9A
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CN110620974A (en
Inventor
黄新民
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Tang Band Industries Co Ltd
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Tang Band Industries Co Ltd
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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
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension
    • 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
    • H04R9/02—Details
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2231/00—Details of apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor covered by H04R31/00, not provided for in its subgroups
    • H04R2231/001—Moulding aspects of diaphragm or surround
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers

Abstract

The invention discloses a high pitch loudspeaker and a manufacturing method thereof, wherein the high pitch loudspeaker comprises a magnetic return unit, a voice coil and a loudspeaker shell, wherein the loudspeaker shell comprises a panel and a vibration unit, the vibration unit comprises an inverted concave diaphragm, the inverted concave diaphragm extends to the upper part of the panel of the loudspeaker shell, one end part of the voice coil is arranged on the inverted concave diaphragm, and the other end part of the voice coil is coupled to the magnetic return unit.

Description

High pitch loudspeaker and manufacturing method thereof
Technical Field
The invention relates to the field of loudspeakers, in particular to a high pitch loudspeaker and a manufacturing method thereof.
Background
Sound is sound waves generated by vibration of a substance. Sound waves are recognizable to the human ear when they propagate through any substance to form a vibration frequency between 20Hz and 20 kHz. The existing sound effect devices, such as loudspeakers or loudspeakers, are usually a transducer device or an electronic assembly that converts an electrical signal into an acoustic signal. The sound effect device generally includes a speaker frame, a diaphragm supported by the speaker frame, a voice coil coupled to the diaphragm, and a magnetic unit electromagnetically induced to the voice coil, such that the magnetic unit induces the voice coil to reciprocate to drive the diaphragm to vibrate, and thereby the diaphragm can exhibit sound in the form of air-blowing. That is, the diaphragm is installed at an opening of the speaker frame, wherein when the voice coil is electromagnetically induced to reciprocate, the voice coil drives the diaphragm to vibrate back and forth, and generates a sound in the form of blowing air when the diaphragm vibrates back and forth.
In a conventional speaker, a stiffener is usually further included to support a joint portion of the voice coil and the diaphragm, so as to limit a moving direction of the voice coil and the diaphragm. Due to the large elastic force of the centering support, the motion speed of the diaphragm during reciprocating motion is often uneven during actuation. And the spider often causes the voice coil to move in a non-linear manner. Thus, once the voice coil is deflected by moving out of alignment with the central axis of the voice coil, the voice coil may scrape against the inside of the speaker, so that the protective coating of the voice coil may be gradually damaged. Further, in the conventional speaker, the damper causes a large lateral vibration and displacement of the voice coil from the direction of its axial displacement, resulting in impure sound. In addition, since the spider needs to be provided in the conventional speaker, a large space needs to be provided between the voice coil and the speaker frame for accommodating the spider, which results in a large distance between the outer wall of the voice coil and the inner wall of the speaker frame, thereby limiting the miniaturization of the speaker.
In addition, conventional tweeters also include a suspension edge that is connected between the speaker frame and the diaphragm, primarily because the rounded edge of the diaphragm is not in direct contact with the speaker frame. Particularly, the elastic edge has different influences on the frequency response, besides the type structure, the selection of the material is a study, and cloth, foam, rubber and the like are commonly used, wherein the foam has the defect of easy decay, the cloth needs to be combined with a high polymer material for further enhancing the characteristics, the manufacturing process is time-consuming and labor-consuming, the rubber edge does not have the defects, the damping characteristic is good, but the single body price of the rubber edge is high. The elastic suspension edges of these speakers, regardless of the material, are combined by gluing, i.e. the diaphragm and the elastic suspension edges are glued together and the elastic suspension edges and the speaker frame are glued together, which is a troublesome and unstable process, especially in the suspension edges of cloth, where each process requires glue. In addition, the high-pitched part of the traditional loudspeaker depends on the special material of the diaphragm to increase the high-frequency extension, which has the disadvantages of complex process and high cost. More importantly, the mode of gluing the vibrating diaphragm with the elasticity dangling limit and gluing the elasticity dangling limit with the speaker frame results in the elasticity dangling limit is easily followed the vibrating diaphragm and/or the speaker frame drops or becomes flexible and leads to the tone quality of speaker to receive the influence to influence the reliability and the stability of speaker. It is well known that for a tweeter, the frequency of the back-and-forth vibration of the diaphragm is relatively high, and long-term and high-frequency back-and-forth vibration tends to deteriorate the stability of the connection between the elastic suspension and the diaphragm and between the elastic suspension and the loudspeaker by means of glue.
Tweeter refers to the speaker that can produce the high pitch, and its operating frequency is usually more than 20kHz, and present tweeter's vibrating diaphragm is the epirelief vibrating diaphragm, and hemisphere vibrating diaphragm for example generally thinks, has the tweeter of epirelief vibrating diaphragm not only to be convenient for high frequency diffusion, and vibrating diaphragm intensity is bigger moreover, and the in-process non-deformable of vibration leads to the sound distortion. However, tweeters with upwardly projecting diaphragms have a number of drawbacks. Specifically, the middle of the diaphragm of the tweeter with the upwardly convex diaphragm is upwardly convex, and the tweeter produces sound by blowing air back and forth by the diaphragm, which causes the sound wave produced by the tweeter to be diffused all around in a diffused manner, and for some tweeters, especially for tweeters used in head-mounted sound devices, it is often necessary to converge the high pitch, and obviously, the existing tweeter with the upwardly convex diaphragm cannot converge the high pitch.
Disclosure of Invention
An object of the present invention is to provide a tweeter and a method of manufacturing the same, in which the tweeter can provide a superior high-frequency sound quality.
An object of the present invention is to provide a tweeter and a method of manufacturing the same, in which a vibration structure based on an injection molding process allows the tweeter to provide a superior high-frequency sound quality.
It is an object of the present invention to provide a tweeter and a method of manufacturing the same, wherein the tweeter is capable of providing a high frequency of 2560Hz, even an ultra high frequency of 40kHZ, to greatly enhance the tweeter's treble performance.
An object of the present invention is to provide a tweeter and a method of manufacturing the same, in which the tweeter can concentrate high tones so that the miniaturized tweeter can have good high tone performance.
An object of the present invention is to provide a tweeter and a method of manufacturing the same, in which the tweeter provides a reverse concave diaphragm which can be driven to generate high-pitched sound in a back-and-forth vibrating manner, and which can focus high-frequency sound waves generated by the reverse concave diaphragm to focus the high-pitched sound.
An object of the present invention is to provide a tweeter and a method for manufacturing the same, wherein the tweeter provides an elastic suspension edge surrounding the inverted concave diaphragm, wherein the elastic suspension edge can make the inverted concave diaphragm vibrate back and forth along the axial direction of the tweeter to generate sound, and no deviation is generated in the process, so as to improve the sound quality of the tweeter.
An object of the present invention is to provide a tweeter and a method for manufacturing the same, wherein the elastic suspension edge can absorb the vibration generated by the inverted concave diaphragm during the back and forth vibration of the inverted concave diaphragm, thereby reducing the force resonance and further improving the purity of the high tone generated by the tweeter.
An object of the present invention is to provide a tweeter and a method of manufacturing the same, in which the elastic suspension is integrally coupled to the inverted concave diaphragm during molding, thereby reducing the difficulty of manufacturing the tweeter and enhancing the high-pitched sound effect of the tweeter.
An object of the present invention is to provide a tweeter and a method of manufacturing the same, in which, compared to a conventional method of bonding a diaphragm and a suspension edge by glue, in the manufacturing process of the tweeter of the present invention, glue is not required to be applied to a bonding position of the inverted concave diaphragm before the elastic suspension edge is integrally bonded to the inverted concave diaphragm, thereby advantageously reducing the manufacturing steps of the tweeter, and advantageously ensuring the consistency of the elastic suspension edge and the inverted concave diaphragm at each bonding position, in such a manner that the treble effect of the tweeter can be further enhanced.
An object of the present invention is to provide a tweeter and a method of manufacturing the same, in which the manufacturing cost of the tweeter can be reduced by integrally coupling an elastic hanging edge to an undercut diaphragm during the manufacturing process of the tweeter without previously manufacturing or providing the elastic hanging edge, as compared to a conventional method of bonding a diaphragm and the hanging edge by glue.
It is an object of the present invention to provide a tweeter and a method of manufacturing the same, in which the tweeter is provided with a speaker frame, and the elastic edge is integrally coupled to a panel of the speaker frame, thereby reducing difficulty in manufacturing the tweeter and enhancing a high-pitched sound performance of the tweeter.
An object of the present invention is to provide a tweeter and a method of manufacturing the same, in which, compared to a conventional method of bonding a speaker frame and a suspension by glue, glue is not applied to a bonding position of a panel before an elastic suspension is integrally bonded to the panel in a manufacturing process of the tweeter of the present invention, thereby advantageously reducing manufacturing steps of the tweeter, and advantageously ensuring conformity of the elastic suspension and the panel at each bonding position, by which a tweeter effect of the tweeter can be further enhanced.
An object of the present invention is to provide a tweeter and a method of manufacturing the same, in which the manufacturing cost of the tweeter can be reduced by integrally coupling an elastic bead to a panel in the process of manufacturing the elastic bead without previously manufacturing or providing the elastic bead, as compared to a conventional method of bonding a diaphragm and the bead by glue.
An object of the present invention is to provide a tweeter and a method of manufacturing the same, in which the elastic suspension is held between the diaphragm and the panel in such a manner that an inner side of a suspension of the elastic suspension is integrally coupled to the diaphragm and an outer side of the suspension of the elastic suspension is integrally coupled to the panel to form the vibration structure, and the inner side of the suspension of the elastic suspension can be reliably coupled to the diaphragm and the outer side of the suspension can be reliably coupled to the panel during vibration of the diaphragm at a high frequency, so as to prevent the inner side of the suspension of the elastic suspension from falling off or loosening from the diaphragm and the outer side of the suspension of the elastic suspension from falling off or loosening from the panel, thereby securing reliability and stability of the tweeter.
An object of the present invention is to provide a tweeter and a method of manufacturing the same, in which the inverted concave diaphragm of the tweeter has predetermined parameters so that the tweeter can provide a high frequency of 2560Hz, even an ultra-high frequency of 40kHZ, to greatly enhance a high-pitched performance of the tweeter.
An object of the present invention is to provide a high pitch loudspeaker and a method for manufacturing the same, wherein an arc height parameter H of the inverted concave diaphragm of the high pitch loudspeaker is in a range of 5mm to 7mm, an arc radian parameter of the inverted concave diaphragm is in a range of 15mm to 20mm, and when the arc height parameter H of the inverted concave diaphragm is in the range of 5mm to 7mm and the arc radian parameter is in the range of 15mm to 20mm, a high frequency of the high pitch loudspeaker can be higher than 40kHz, so as to greatly enhance a high pitch performance of the high pitch loudspeaker.
An object of the present invention is to provide a tweeter and a method of manufacturing the same, in which the diameter of the tweeter is adapted to be controlled within a range of 8mm-38mm to facilitate miniaturization of the tweeter. For example, the tweeter of the present invention is suitable for application to a head-mounted sound effect device such as an earphone.
Another object of the present invention is to provide a tweeter and a method of manufacturing the same, in which the tweeter is provided with the inverted-concave diaphragm such that the inverted-concave diaphragm has no portion protruding outward of the tweeter, and thus there is no concern about an undesirable phenomenon that the inverted-concave diaphragm is deformed due to being touched carelessly during storage, transportation, and installation of the tweeter, so as to advantageously ensure the sound quality of the tweeter.
Another object of the present invention is to provide a tweeter and a method for manufacturing the same, wherein the inverted-concave diaphragm is an alloy diaphragm or a metal diaphragm, so as to ensure the rigidity and strength of the inverted-concave diaphragm, and thus to ensure the sound quality of the tweeter.
Another object of the present invention is to provide a tweeter and a method of manufacturing the same, in which the tweeter does not require a centering pad around a voice coil, thereby providing the tweeter without the centering pad, so that the structure is more compact, the manufacturing process is simpler, and the production cost is lower. In other words, since the tweeter of the present invention does not need to be provided with a centering chip, the distance between the voice coil and the inner wall of the speaker frame can be greatly reduced to facilitate miniaturization of the tweeter.
Another object of the present invention is to provide a tweeter and a method of manufacturing the same, in which the tweeter is implemented in a structure without a hanging edge, thereby simplifying a manufacturing process.
Another object of the present invention is to provide a tweeter speaker and a method of manufacturing the same, in which the inverted concave diaphragm extends to the panel of the speaker housing, and the panel can provide an upward supporting force of the inverted concave diaphragm, so that the inverted concave diaphragm can be stably held to the panel.
Another object of the present invention is to provide a tweeter and a method of manufacturing the same, wherein the vibration unit includes a coupling member, wherein the inverted concave diaphragm extends to the panel of the speaker housing, and the coupling member is capable of stably fixing the inverted concave diaphragm to the panel of the speaker housing, preventing the inverted concave diaphragm from being separated from the panel during vibration of the inverted concave diaphragm driven by the voice coil, thereby ensuring reliability and stability of the tweeter.
Another object of the present invention is to provide a tweeter wherein the inverted concave diaphragm includes a seating portion held at an upper portion of a bearing surface of the panel, and the coupling element is formed at the seating portion and the bearing surface to form an integrated vibration structure, which ensures the uniformity of the coupling element with the inverted concave diaphragm and the panel, thereby improving the stability and reliability of the tweeter.
Another object of the present invention is to provide a high pitch loudspeaker, wherein the coupling element includes a coupling portion covering at least a portion of the surface of the mounting portion of the inverted concave diaphragm and at least a portion of the surface of the bearing surface of the panel to fixedly couple the inverted concave diaphragm to the panel, so as to prevent the inverted concave diaphragm from being separated from the panel during vibration of the inverted concave diaphragm driven by the voice coil.
Another object of the present invention is to provide a tweeter wherein the coupling element includes at least one position-limiting portion, the panel has at least one engaging hole, the position-limiting portion extends downward from the coupling portion, and the position-limiting portion is held in the engaging hole of the panel, so that the inverted concave diaphragm is firmly fixed to the panel.
Another object of the present invention is to provide a tweeter wherein the coupling member includes a plurality of limiting protrusions, the panel has a plurality of limiting holes, the limiting protrusions extend downward to the coupling portion, and the limiting protrusions are formed in the limiting holes, so that a contact area of the coupling member with the panel and the inverted concave diaphragm is increased, thereby more firmly fixing the inverted concave diaphragm to the panel.
Another object of the present invention is to provide a tweeter wherein the seating portion of the inverted concave diaphragm has a through hole communicating with the engagement hole of the panel, and the stopper portion is held in the through hole and the engagement hole, thereby more firmly fixing the inverted concave diaphragm to the panel.
Another object of the present invention is to provide a tweeter wherein the seating portion of the inverted-concave diaphragm can be attached to the bearing surface of the panel, and the inverted-concave diaphragm can be stably mounted on the panel without any other external structural support, so as to prevent relative displacement between the inverted-concave diaphragm and the panel during the process of forming the joint element.
Another object of the present invention is to provide a high pitch loudspeaker, wherein the connection limiting portion of the inverted concave diaphragm is disposed in a suspended manner in a space between the voice coil and the panel, and when the vibration main body is driven to vibrate back and forth along an axial direction of the high pitch loudspeaker, the connection limiting portion can limit a movement of the vibration main body of the inverted concave diaphragm in the axial direction, so as to ensure that the inverted concave diaphragm does not deflect during the back and forth vibration along the axial direction of the high pitch loudspeaker, thereby ensuring the purity of high pitch generated by the high pitch loudspeaker.
In one aspect of the present invention, the present invention further provides a tweeter, comprising:
a magnetic return unit;
a voice coil;
a speaker housing, wherein the speaker housing includes a panel; and
a vibration unit, wherein the vibration unit comprises a reverse concave diaphragm, wherein the reverse concave diaphragm extends to an upper portion of the panel of the speaker housing, wherein one end portion of the voice coil is disposed on the reverse concave diaphragm, and the other end portion of the voice coil is coupled to the magneto-rheological unit.
According to an embodiment of the present invention, the vibration unit further includes an engaging member that is provided to the inverted concave diaphragm and the panel and fixes the inverted concave diaphragm to the panel.
According to an embodiment of the present invention, the inverted concave diaphragm includes a seating portion, a connection limiting portion integrally extended from the seating portion and connected to the vibration body, the seating portion of the inverted concave diaphragm is held at an upper portion of the panel, and the vibration body is disposed at the voice coil.
According to one embodiment of the present invention, the connection limiting portion of the inverted concave diaphragm is held in the air between the voice coil and the panel.
According to an embodiment of the present invention, the panel of the speaker housing has a bearing surface, the seating portion of the inverted-concave diaphragm is held at an upper portion of the bearing surface, and the coupling element is formed on the bearing surface and the seating portion of the panel.
According to one embodiment of the invention, the placing part of the inverted concave diaphragm is attached to the bearing surface of the panel.
According to one embodiment of the invention, the placement portion of the inverted concave diaphragm is held in the air at the upper portion of the bearing surface of the panel.
According to one embodiment of the present invention, the panel has an engagement groove, wherein the engagement member is received in the engagement groove.
According to an embodiment of the present invention, the joint element includes a joint portion and a plurality of limiting protrusions, the limiting protrusions integrally extend downward from the joint portion, the joint portion of the joint element is formed on the mounting portion of the inverted concave diaphragm of the panel and the bearing surface of the panel, wherein the mounting portion of the inverted concave diaphragm has a plurality of limiting holes, the limiting holes penetrate through the inverted concave diaphragm, and the limiting protrusions are formed in the limiting holes.
According to an embodiment of the present invention, the panel has at least one engaging hole, each of which communicates with the engaging groove, wherein the engaging element includes at least one stopper portion integrally extending downward from the engaging portion, and the stopper portion is held in the engaging hole of the panel.
According to an embodiment of the present invention, the panel has at least one engaging hole, each of which is communicated with the engaging groove, wherein the engaging element includes an engaging portion and at least one position-limiting portion, the position-limiting portion integrally extends downward from the engaging portion, and the position-limiting portion is held in the engaging hole of the panel.
According to an embodiment of the present invention, the panel has a holding groove formed in a lower surface thereof and communicating with at least one of the engaging holes, the engaging member includes a holding portion integrally extended from the stopper portion, and the holding portion of the engaging member is formed in the holding groove.
According to an embodiment of the present invention, the mounting portion of the inverted concave diaphragm has at least one through hole, the through hole penetrates through the inverted concave diaphragm, the through hole corresponds to the engagement hole, the position-limiting hole communicates with the engagement hole, and the position-limiting portion is held by the engagement hole of the panel and the through hole of the mounting portion of the inverted concave diaphragm.
According to an embodiment of the present invention, the connection limiting portion of the inverted concave diaphragm includes an inner connecting portion and an outer connecting portion, and the inner connecting portion and the outer connecting portion are integrally formed and form a planar or corrugated or arched or corrugated structure.
According to one embodiment of the present invention, the inverted concave diaphragm is a metal diaphragm or an alloy diaphragm.
According to an embodiment of the present invention, the speaker housing further includes a back cover, wherein the back cover is provided to the panel, and the magnet return unit and the voice coil are held in a space formed between the panel and the back cover.
According to one aspect of the present invention, there is further provided a method of manufacturing a vibrating structure of a tweeter speaker, the method comprising the steps of:
(a) maintaining a mounting portion of an inverted concave diaphragm of a vibration unit on an upper portion of a bearing surface of a panel of a speaker housing; and
(b) and forming a connecting element on the placing part of the inverted concave vibrating diaphragm and the bearing surface of the panel in a molding die by an injection molding process, and connecting the inverted concave vibrating diaphragm and the panel to obtain the vibrating structure.
According to an embodiment of the present invention, in the step (a), further comprising the steps of: the mounting portion of the inverted concave diaphragm attached to the vibration unit is positioned on the bearing surface of the panel of the speaker housing.
According to an embodiment of the present invention, in the step (a), further comprising the steps of: the seating portion of the inverted concave diaphragm of the vibration unit is provided in a suspended manner at an upper portion of the bearing portion of the panel of the speaker housing.
According to an embodiment of the present invention, before the step (a), further comprising the steps of: and sequentially placing the panel of the loudspeaker shell and the inverted concave vibrating diaphragm of the vibrating unit in a forming space of the forming die.
According to one embodiment of the present invention, the step (a) is followed by the steps of: and simultaneously placing the panel and the inverted concave diaphragm arranged on the panel into a forming space of the forming die.
According to an embodiment of the present invention, the step (b) further comprises the steps of:
guiding a fluid-shaped molding material to cover at least a part of the surface of the panel and at least a part of the surface of the mounting part of the inverted concave diaphragm; and
and curing the molding material to form a joint part of the joint element.
According to an embodiment of the present invention, the step (b) further comprises the steps of:
at least one joint hole for guiding a fluid-shaped molding material to cover at least one part of the surface of the panel and at least one part of the surface of the placing part of the inverted concave diaphragm and fill the panel; and
and solidifying the molding material to form a joint part and a limiting part of the joint element.
According to an embodiment of the present invention, the step (b) further comprises the steps of:
guiding a fluid-shaped molding material to cover at least one part of the surface of the panel and at least one part of the surface of the placing part of the inverted concave diaphragm, guiding the molding material to pass through a through hole of the inverted concave diaphragm, and filling at least one joint hole of the panel; and
and solidifying the molding material to form a joint part and a limiting part of the joint element.
According to an embodiment of the present invention, the step (b) further comprises the steps of:
guiding a fluid-shaped molding material to fill at least one limiting hole of the placement part of the inverted concave diaphragm; and
and solidifying the molding material to form a limiting bulge of the joint element.
According to one aspect of the present invention, the present invention further provides a method for manufacturing a tweeter, comprising the steps of:
(a) maintaining a mounting portion of an inverted concave diaphragm of a vibration unit on an upper portion of a bearing surface of a panel of a speaker housing;
(b) forming a connecting element in a forming die through an injection molding process and connecting the inverted concave diaphragm and the panel;
(c) arranging a voice coil between a magnetic return unit and the vibration unit;
(d) the vibration unit and the magnetic return unit are jointed through a magnetic return connecting frame; and
(e) joining the face plate and a rear cover of the speaker housing to produce the tweeter.
Drawings
Fig. 1 is a perspective view of a tweeter according to a first preferred embodiment of the present invention.
Fig. 2 is a front view of a tweeter according to a first preferred embodiment of the present invention.
Fig. 3 is a sectional view of a tweeter according to a first preferred embodiment of the present invention, wherein a-a according to fig. 2 shows a plan sectional view.
Fig. 4 is a sectional view of a tweeter according to a first preferred embodiment of the present invention, wherein a-a according to fig. 2 shows a perspective sectional view.
Fig. 5 is an exploded view of a tweeter according to a first preferred embodiment of the present invention.
Fig. 6 is a perspective view of a tweeter according to a second preferred embodiment of the present invention.
Fig. 7 is a front view of a tweeter according to a second preferred embodiment of the present invention.
Fig. 8 is a sectional view of a tweeter according to a second preferred embodiment of the present invention, wherein a plan sectional view is shown in accordance with B-B of fig. 7.
Fig. 9 is a sectional view of a tweeter according to a second preferred embodiment of the present invention, wherein a perspective sectional view is shown according to B-B of fig. 7.
Fig. 10 is an exploded view of a tweeter in accordance with a second preferred embodiment of the present invention.
Fig. 11 is a graph showing the result of the LMS electroacoustic test according to the above-described first preferred embodiment of the present invention.
Fig. 12 is a perspective view of a tweeter according to a third preferred embodiment of the present invention.
Fig. 13 is a perspective sectional view of a tweeter according to a third preferred embodiment of the present invention, illustrating an internal structure of the tweeter of fig. 12.
Fig. 14 is a partially enlarged schematic view of fig. 13 at the S position.
Fig. 15 is a schematic diagram of a process for manufacturing the tweeter according to the above preferred embodiment of the present invention.
Fig. 16 is a schematic diagram of a second process for manufacturing the tweeter according to the above preferred embodiment of the present invention.
Fig. 17 is a schematic diagram of a third process of manufacturing the tweeter according to the above preferred embodiment of the present invention.
Fig. 18 is a schematic diagram of a fourth process of manufacturing the tweeter according to the above preferred embodiment of the present invention.
Fig. 19 is a schematic diagram of a fifth process of manufacturing the tweeter according to the above preferred embodiment of the present invention.
Fig. 20 is a schematic diagram of a sixth process for manufacturing the tweeter according to the above preferred embodiment of the present invention.
Fig. 21 is a cross-sectional view of a modified embodiment of the tweeter according to the above preferred embodiment of the present invention.
Fig. 22 is a cross-sectional view of a modified embodiment of the tweeter in accordance with the preferred embodiment of the present invention.
Fig. 23 is a schematic cross-sectional view of a modified embodiment of the tweeter in accordance with the preferred embodiment of the present invention.
Fig. 24 is a schematic cross-sectional view of a modified embodiment of the tweeter in accordance with the preferred embodiment of the present invention.
Fig. 25 is a cross-sectional view of a modified embodiment of the tweeter in accordance with the preferred embodiment of the present invention.
Fig. 26 is a schematic perspective view of the tweeter according to another preferred embodiment of the present invention.
Fig. 27 is an exploded view of the tweeter according to the above preferred embodiment of the present invention.
Fig. 28 is a cross-sectional view of the tweeter according to the above preferred embodiment of the present invention.
Fig. 29 is a schematic view of a manufacturing process of the tweeter according to the above preferred embodiment of the present invention.
Fig. 30 is a schematic diagram of a second process for manufacturing the tweeter according to the above preferred embodiment of the present invention.
Fig. 31 is a schematic diagram of a third process of manufacturing the tweeter according to the above preferred embodiment of the present invention.
Fig. 32 is a schematic diagram of a fourth process of manufacturing the tweeter according to the above preferred embodiment of the present invention.
Fig. 33 is a schematic diagram of a fifth process of manufacturing the tweeter according to the above preferred embodiment of the present invention.
Fig. 34 is a schematic diagram of a sixth process for manufacturing the tweeter according to the above preferred embodiment of the present invention.
Fig. 35 is a schematic view of another embodiment of the bonding element of the vibration unit of the tweeter speaker fixing the inverted concave diaphragm to the panel of the speaker housing according to the above preferred embodiment of the present invention.
Fig. 36 is a schematic view of another embodiment of the bonding element of the vibration unit of the tweeter speaker fixing the inverted concave diaphragm to the panel of the speaker housing according to the above preferred embodiment of the present invention.
Fig. 37 is a schematic view of another embodiment of the bonding element of the vibration unit of the tweeter speaker fixing the inverted concave diaphragm to the panel of the speaker housing according to the above preferred embodiment of the present invention.
Fig. 38 is a schematic view of another embodiment of the bonding element of the vibration unit of the tweeter speaker fixing the inverted concave diaphragm to the panel of the speaker housing according to the above preferred embodiment of the present invention.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be constructed and operated in a particular orientation and thus are not to be considered limiting.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
It is also known that the speaker frequency is high-pitched sound in the 2560HZ to 5120HZ band, and is very high-pitched sound in the 5120HZ or higher band. The tweeter of the present invention is adapted to provide a tweeter sound effect in a frequency band of 2560HZ or more, and thus is defined as the tweeter.
Referring to fig. 1 to 5, a high pitch speaker according to a first preferred embodiment of the present invention is disclosed, wherein a diaphragm structure and a process thereof form the high pitch speaker with high quality, thereby reducing the manufacturing cost, simplifying the process and improving the process quality. The tweeter includes a speaker housing 10, a vibration unit 20, a voice coil 30, and a magnetic return unit 40. The vibration unit 20, the voice coil 30, and the magnet return unit 40 are accommodated in the speaker housing 10. Further, the vibration unit 20 is disposed at the speaker housing 10, one end of the voice coil 30 is connected to the vibration unit 20, and the other end of the voice coil 30 is coupled to the magnetic return unit 40. That is, the voice coil 30 is located between the vibration unit 20 and the magnet unit 40, and the speaker housing 10 accommodates the vibration unit 20, the voice coil 30, and the magnet unit 40 therein. It is worth mentioning that the voice coil 30 moves back and forth under the electromagnetic driving force of the magnetic return unit 40, so that the vibration unit 20 is driven by the voice coil 30 to move back and forth along the axial direction thereof, so that the vibration unit 20 blows the air in and around the tweeter to generate sound.
In the preferred embodiment of the present invention, the speaker housing 10 includes a front panel 11 and a back cover 12, and the front panel 11 is coupled to the back cover 12 to accommodate the vibration unit 20, the voice coil 30 and the magneto unit 40 therein. In other words, the vibration unit 20, the voice coil 30, and the magneto unit 40 are held in a space formed between the face plate 11 and the back cover 12. It should be noted that the front plate 11 and the rear cover 12 may be combined together in various ways, such as a snap-lock assembly, a screw assembly, thermal welding, ultrasonic welding, etc. which are matched with each other. For example, the panel 11 of the speaker housing 10 may be an upper housing, and the rear cover 12 may be a lower housing, when the tweeter of the present embodiment is vertically disposed.
In the preferred embodiment of the present invention, the vibration unit 20 includes an inverted concave diaphragm 21 and an elastic suspension 22, wherein the elastic suspension 22 is integrally connected to the inverted concave diaphragm 21. Preferably, the elastic suspension 22 is integrally connected to the inverted concave diaphragm 21 and the panel 11. Furthermore, the elastic suspension edge 22 is formed by an integral injection process, and is connected to the inverted concave diaphragm 21 and the panel 11 simultaneously in the process. It is worth mentioning that the elastic suspension 22 will be integrally connected to the panel 11 during the integral injection process. In other words, the elastic suspension 22, the inverted concave diaphragm 21 and the panel 11 are integrated into a single part through an integral injection process to form a vibration structure 200 of the tweeter, wherein the vibration structure 200 is a single vibration structure. It is understood that, in the tweeter of the present invention, since the vibration structure 200 is an integrated vibration structure, it is advantageous to ensure the consistency of the elastic suspended edge 22 and the inverted concave diaphragm 21 at the respective coupling positions, in this way, the treble effect of the tweeter can be further enhanced, and the elastic suspended edge 22 ensures that the inverted concave diaphragm 21 does not deflect during the back and forth vibration in the axial direction of the tweeter. It will be appreciated that the resilient suspension 22 is formed by an insert injection molding process. That is, the panel 11 and the inverted concave diaphragm 21 are placed in a molding mold, and then the material for making the elastic suspended edge 22 is injected in a liquid form, the material for the elastic suspended edge 22 is attached to the panel 11 and the inverted concave diaphragm 21, and after cooling and solidification, the elastic suspended edge 22 is formed between the panel 11 and the inverted concave diaphragm 21, so that the panel 11 and the inverted concave diaphragm 21 can be fixed and become an integrated part.
In addition, one end of the voice coil 30 is connected to the inverted concave diaphragm 21 of the vibration unit 20, and the other end of the voice coil 30 is coupled to the magnetic return unit 40, so that the voice coil 30 moves back and forth under the electromagnetic driving force of the magnetic return unit 40, thereby moving the inverted concave diaphragm 21 and the elastic suspension 22 of the vibration unit 20 back and forth along the axial direction thereof to make the tweeter provide high-frequency sound. It will be appreciated that the resilient suspension 22 limits the movement of the inverted concave diaphragm 21 to its axial direction. Accordingly, the inverted concave diaphragm 21 is moved only in the axial direction thereof without displacement, and in this way, the purity of the high tone generated by the tweeter can be ensured.
It is worth mentioning that the tweeter of the present invention does not have the centering pads (pops) of the conventional speaker. It will be understood by those skilled in the art that the inverted-concave diaphragm 21 and the elastic suspension 22 of the present invention can also be applied to other various speakers or sound effect devices, including conventional speakers with elastic waves. In other words, the vibration structure 200 of the present invention can be applied to various speakers or sound effect devices, including conventional speakers having an elastic wave.
In this preferred embodiment of the invention, the inverted concave diaphragm 21 is concave arcuate with predetermined parameters of an arcuate height H and an arcuate curvature R set relative to the size of the tweeter, the tweeter diameter being suitably in the range of 8-38 millimeters (MM), the arcuate height H being in the range of 5-7 MM (MM), and the arcuate curvature R being in the range of 15-20 MM (MM). Preferably, the tweeter is suitably 10-20 mm in diameter. More preferably, the tweeter is sized to have a diameter of 10-15 mm or 15-20 mm. The arc height H ranges from 5.5 to 6.5 mm. The arc radian R ranges from 16 to 18mm, for example 17 mm.
It is understood that, with the structure of the present invention as shown in fig. 11, the abscissa is frequency (in HZ) and the ordinate is decibel (in dBSPL), the high frequency of the tweeter of the present invention can be extended to the ultra high frequency of 40KHZ by the LMS electro-acoustic test System of the linear System company in the united states, and the high-frequency tone band performance can significantly enhance the treble effect of the speaker of the present invention.
The arc height H of the inverted-concave diaphragm 21 of the present invention is selected to be in the range of 5-7 mm, and at the same time, the arc curvature R of the inverted-concave diaphragm 21 is selected to be in the range of 15-20 mm, so that the tweeter with the inverted-concave diaphragm 21 can generate high-pitched sound of 2560Hz or more, and even the tweeter with the inverted-concave diaphragm 21 can generate high-pitched sound of 40kHz or more, as shown in the test results shown in fig. 11, which was unexpected for the tweeter of the related art. As explained in the background section of this patent application, those skilled in the art will recognize that the tweeter of the prior art can produce high pitch sound only by providing the diaphragm with a convex structure in the middle, and the high frequency of the high pitch loudspeaker of the prior art is commonly around 20kHz-2560Hz, in the tweeter of the present invention, however, the inverted-concave diaphragm 21 has an inwardly concave shape, and because the arcuate height H and the arcuate curvature R of the inverted concave diaphragm 21 are selected, the tweeter is capable of generating high-quality high-frequency treble with a high frequency above 2560Hz, and even ultra-high-frequency treble with a high frequency above 40kHz, which overcomes the technical prejudice of the skilled person, and the tweeter of the present invention has the unexpected technical effect of the tweeter of the prior art.
In addition, the inverted concave diaphragm 21 of the tweeter of the present invention is concave, so that the high pitch generated by the tweeter can be converged, and compared with the tweeter of the prior art which adopts a diaphragm with a convex structure, the high pitch generated by the tweeter of the present invention can be converged due to the structure of the inverted concave diaphragm 21, so that the high pitch of the tweeter can be more concentrated, thereby expanding the application range of the tweeter. For example, the tweeter of the present invention is suitable for application to a head-mounted sound effect device such as an earphone.
More specifically, the inverted-concave diaphragm 21 has an upper plane 211 and a lower concave arc 212, wherein the upper plane 211 circularly surrounds the lower concave arc 212, and the elastic suspension 22 is integrally connected to the upper plane 211 of the inverted-concave diaphragm 21. The concave arc surface 212 is formed downward from the upper plane 211 in an arc. It is worth mentioning that the concave arc 212 is located inside the voice coil 30. In other words, the voice coil 30 may encircle at least a portion of the concave arc 212. In addition, the inverted concave diaphragm 21 is made of a metal material, such as but not limited to an aluminum material, that is, the inverted concave diaphragm 21 is a metal diaphragm, such as an aluminum film, in such a way, the strength of the inverted concave diaphragm 21 can be enhanced to prevent the inverted concave diaphragm 21 from being deformed during the driving process of the inverted concave diaphragm 21, thereby ensuring the purity of sound. The inverted concave diaphragm 21 is integrally accommodated and connected when the elastic suspension edge 22 is formed. It is to be understood that, in the tweeter of the present invention, the arc height H of the inverted concave diaphragm 21 is the arc height of the concave arc 212, and the arc curvature R of the inverted concave diaphragm 21 is the arc curvature of the concave arc 212.
In the preferred embodiment of the present invention, the elastic suspension 22 is made of an elastic material and is disposed between the inverted concave diaphragm 21 and the panel 11, for example, but not limited to, the elastic suspension 22 may be a rubber suspension. In the tweeter of the present invention, the elastic suspended edge 22 is provided between the inverted concave diaphragm 21 and the panel 11 of the speaker frame 10 so as to be integrally bonded to the inverted concave diaphragm 21 and the panel 11. Specifically, the elastic suspended edge 22 of the present invention includes an inner suspended edge portion and an outer suspended edge portion, which may be integrally formed and may both annularly surround the circumference of the inverted concave diaphragm 21, and the inner suspended edge portion and the outer suspended edge portion are molded together and form a plane, a corrugated, an arch, or a wave structure in the direction of the cross section. In this embodiment, the inner and outer cuff portions of the elastic cuff 22 are integrally connected and form a planar structure. It is worth mentioning that the elastic suspension 22 and the inverted-concave diaphragm 21 may be made of different materials, for example, the elastic suspension 22 may be made of a softer material than the inverted-concave diaphragm 21. In this way, the combination of the elastic suspension 22 and the soft and hard material of the inverted-concave diaphragm 21 is more effective in preventing rapid transfer of a pulling stress and allowing the inverted-concave diaphragm 21 to vibrate more regularly.
The elastic suspension 22 includes a suspension body 221 and a plurality of elastic ribs 222 spaced apart from each other and arranged in a circular direction, each of the elastic ribs 222 integrally and protrudingly extending from the suspension body 221. Two adjacent elastic ribs 222 are arranged at intervals, and a plurality of elastic ribs 222 are uniformly arranged in a radial shape to function to limit the displacement direction of the elastic suspended edge 22 in the axial direction thereof. In another example, each of the elastic ribs 222 may also integrally and concavely extend from the suspended edge main body 211. In yet another example of the present invention, a portion of the spring ribs 222 may extend convexly, and another portion of the spring ribs 222 may extend concavely, e.g., the spring ribs 222 adjacent to the raised spring ribs 222 are concave. Specifically, when the suspension 22 is to undergo an off-axis displacement in a predetermined direction, the elastic rib 222 in the opposite direction acts as a restriction preventing further deflection of the suspension 22. In addition, the shape of the protrusion formed by the elastic rib 222 may not be limited, and the corresponding groove formed at the other side may have various shapes. For example, the cross-section of the spring rib 222 may be arcuate, arched, triangular, quadrilateral, polygonal, semicircular, semi-elliptical, inverted U-shaped, inverted V-shaped, and the like.
It should be noted that, when the elastic suspended edge 22 is formed by the inner suspended edge portion and the outer suspended edge portion in a corrugated, arched or wavy structure, a plurality of elastic ribs 222 may be radially and uniformly arranged on the inner suspended edge portion or the outer suspended edge portion, or radially and uniformly arranged on the inner suspended edge portion and the outer suspended edge portion at the same time, according to requirements, which is not a limitation of the present invention. In this embodiment of the present invention, these elastic ribs 222 are arranged spirally to provide the inverted concave diaphragm 21 with a centripetal force toward the center axis of the tweeter, so that the vibration direction of the inverted concave diaphragm 21 is restricted to the axial direction of the tweeter.
It should be noted that the tweeter of the present invention has no centering piece, but does not affect the sound quality, so to speak, the inverted concave diaphragm 21 is only displaced back and forth in the axial direction of the tweeter by the limiting action of the elastic rib 222, so as to prevent the inverted concave diaphragm 21 from blowing air to generate sound and simultaneously generate noise. Moreover, since the tweeter has a structure without a centering chip, the distance of the voice coil 30 from the inner surface of the speaker housing 10 is shortened, so that a more compact structure can be formed. In addition, since the distance between the voice coil 30 and the speaker housing 10 is shortened, the space in which the voice coil 30 is displaced from the axial direction of the tweeter is correspondingly reduced, which more effectively prevents the voice coil 30 from being shaken with a greater amplitude from being displaced from the axial direction of the tweeter. In addition, the tweeter does not need to be provided with a centering chip, thereby contributing to reduction in manufacturing cost and difficulty of the tweeter, and to miniaturization of the tweeter.
In the preferred embodiment of the present invention, the magnetic return unit 40 includes a magnetic protective sleeve 41, a permanent magnet 42, and at least one magnetizer 43. The permanent magnet 42 is located below the magnetizer 43 and is placed in the magnetic protection sleeve 41, and a magnetic gap 44 is formed between the permanent magnet 42 and the magnetic protection sleeve 41. In other words, the permanent magnet 42 and the magnetizer 43 are disposed inside the magnetic protecting sleeve 41 in such a manner that the permanent magnet 42 is located at the lower portion of the magnetizer 43. One end of the voice coil 30 is connected to the inverted concave diaphragm 21 of the vibration unit 20, and the other end of the voice coil 30 is coupled to the magnetic gap 44 of the magneto-rheological unit 40. The magnetic protective sleeve 41 may have a conventional U-iron structure, and the magnetizer 43 may have a conventional pole piece structure. The magnetic protective sleeve 41 and the magnetic conductor 43 guide the magnetic lines of force of the permanent magnet 42 to the magnetic gap 44, so that the magnetic return unit 40 can interact with the voice coil 30 disposed in the magnetic gap 44. That is, the magnetic protective sleeve 41, the permanent magnet 42 and the magnetizer 43 together form a magnetic field loop to generate vibration in cooperation with the voice coil 30. That is, one end of the voice coil 30 can be connected to the inverted concave diaphragm 21, and the other end of the voice coil 30 extends to the magnetic gap 44 of the magneto-rheological unit 40, so that the voice coil 30 and the magneto-rheological unit 40 can magnetically communicate, and thus the magneto-rheological unit 40 can drive the voice coil 30 to move back and forth.
In the preferred embodiment of the present invention, the permanent magnet 42 may be various magnets, or magnetic steels, such as metal-based magnets, ferrosoferrite, rare-earth magnets, etc. In the preferred embodiment of the present invention, the permanent magnet 42 may be a neodymium-iron-boron magnet. Which provides magnetic energy in the magnetic return unit 40 and forms a magnetic field return path to provide the magnetic gap 44.
It will be appreciated that the components of the gyromagnetic unit 40 may be formed as a unitary structure by a conventional glue bonding process. Alternatively, the magnetic return unit 40 may be manufactured by an integral injection molding process. More specifically, the magnetic protection sleeve 41, the permanent magnet 42 and the magnetizer 43 may be formed as an integral structure through injection molding.
In the preferred embodiment of the present invention, the magnetic loop unit 40 includes a magnetic loop connecting frame 48 disposed between the magnetic protective sleeve 41 and the panel 11. That is, the magnetic return unit 40 is mounted on the panel 11 of the speaker housing 10 via the magnetic return connecting frame 48, so that the inverted concave diaphragm 21 and the elastic suspension 22 of the vibration unit 20 are joined to the magnetic return unit 40 to form an integral structure. Further, the gyromagnetic yoke 48 includes a yoke body 481, a yoke flange 482, and a plurality of positioning grooves 483, wherein the yoke body 481 has a ring shape, and the yoke flange 482 extends and protrudes from an inner side of the ring shape of the yoke body 481. The positioning slots 483 are circumferentially distributed on the connecting frame body 481. The magnetic shield 41 includes a shield groove 412 formed from the outside of the magnetic shield 41 to the inside of the magnetic shield 41 to form an annular groove, so that when the magnetic return link 48 is connected to the magnetic shield 41, the link flange 482 will couple with the shield groove 412. The panel 11 includes a plurality of positioning tongues 111 adapted to be inserted into the corresponding positioning slots 483 to assemble the panel 11 and the frame 48 together. Of course, it is conceivable that the positioning tongue 111 may be disposed on the magnetic return connection frame 48 and the positioning groove 483 is formed on the panel 11, and the panel 11 and the magnetic return connection frame 48 may each have the positioning tongue 111 and the positioning groove 483.
In the preferred embodiment of the present invention, the panel 11 has at least one engaging groove 112, and the elastic hanging edge 22 further includes a connecting edge 223, wherein a portion of the connecting edge 223 is received in the engaging groove 112, thereby fixedly connecting the elastic hanging edge 22 and the panel 11 together. The elastic suspended edge 22 may be formed by injection molding of an elastic material, that is, the elastic material integrally forms the connecting edge 223 at the same time of forming the elastic suspended edge main body 221 and the plurality of elastic ribs 222, and the connecting edge 223 is received in the outer surface of the panel 11, thereby connecting the elastic suspended edge 22 and the panel 11 together. In this preferred embodiment, during containment, the liquid elastic material flows into the annular engaging groove 112 of the panel 11, thereby forming the annular connecting edge 223. It is worth mentioning that the panel 11 further has a plurality of joint through holes 113 evenly distributed and penetrating the panel 11, and the joint through holes 113 connect the joint grooves 112, so that when the elastic suspension 22 is formed by injection molding, the liquid elastic material thereof also flows into the joint through holes 113, so that the elastic suspension 22 and the panel 11 have better bonding strength.
In the preferred embodiment of the present invention, the tweeter includes a shock absorbing unit 50 disposed at the rear cover 12 of the speaker housing 10 such that the shock absorbing unit 50 supports the tweeter and reduces vibration when the tweeter is placed or assembled on a surface. Further, the damping unit 50 is made of an elastic material, so that when the tweeter is supported, the vibration generated when the tweeter is in an operating state is transmitted to the damping unit 50, and the damping unit 50 releases the vibration, thereby achieving the damping effect.
In the preferred embodiment of the present invention, the tweeter includes a protective cover 60, which is located on the panel 11 of the speaker housing 10, for protecting the inverted concave diaphragm 21 and the elastic suspension 22 of the vibration unit 20. It will be appreciated that the protective cover 60 has a plurality of openings so that the protective cover 60 does not interfere with the transmission of sound and enhances aesthetic appeal.
In addition, it is worth mentioning that the invention also provides a corresponding method for manufacturing and assembling a tweeter according to the first embodiment, which includes the following steps:
(a) placing an inverted concave diaphragm 21 of a vibration unit 20 and a panel 11 of a speaker enclosure 10 in a mold;
(b) forming an elastic suspension edge 22 in the mold through an injection molding process and joining the inverted concave diaphragm 21 and the panel 11;
(c) disposing a voice coil 30 between the gyromagnetic unit 40 and the vibration unit 20;
(d) combining the vibration unit 20 and the magnetic return unit 40 through a magnetic return connection frame 48; and
(e) the panel 11 and a rear cover 12 of the speaker housing 10 are combined.
According to step (a), the undercut diaphragm 21 is a metal diaphragm, such as an aluminum film.
According to the step (a), the inverted concave diaphragm 21 is a concave arc, wherein predetermined parameters of an arc height H and an arc radian R are set with respect to the size of the tweeter, when the diameter of the tweeter is in the range of 8-38 millimeters (MM), the range value of the arc height H is 5-7 millimeters (MM), and the range value of the arc radian R is 15-20 millimeters (MM).
According to the step (c), one end of the voice coil 30 is connected to the inverted concave diaphragm 21 of the vibration unit 20, and the other end of the voice coil 30 is coupled to a magnetic gap 44 of the gyromagnetic unit 40. The magnetic gap 44 is formed by a gap between the permanent magnet 42 and the magnetic protective sleeve 41.
As shown in fig. 6 to 10, a high pitch loudspeaker according to a second preferred embodiment of the present invention has a diaphragm structure and a process to form the high pitch loudspeaker with high quality, which not only reduces the manufacturing cost, but also simplifies the process and improves the process quality. The tweeter includes a speaker housing 10, a vibration unit 20, a voice coil 30, and a magnetic return unit 40. The vibration unit 20, the voice coil 30, and the magnet return unit 40 are accommodated in the speaker housing 10. Further, the vibration unit 20 is disposed on the speaker housing 10, one end of the voice coil 30 is connected to the vibration unit 20, and the other end of the voice coil 30 is coupled to the magneto-rheological unit 40. That is, the voice coil 30 is located between the vibration unit 20 and the magnet unit 40, and the speaker housing 10 accommodates the vibration unit 20, the voice coil 30, and the magnet unit 40 therein. It is worth mentioning that the voice coil 30 moves back and forth under the electromagnetic driving force of the magnetic return unit 40, thereby driving the vibration unit 20 to move back and forth along the axial direction of the tweeter to generate sound by blowing air in and around the tweeter.
In the preferred embodiment of the present invention, the speaker housing 10 includes a front panel 11 and a back cover 12, and the front panel 11 is coupled to the back cover 12 to accommodate the vibration unit 20, the voice coil 30 and the magnet unit 40 therein. It should be noted that the panel 11 and the rear cover 12 can be combined together in various ways, such as a snap-lock assembly, a screw assembly, thermal welding, ultrasonic welding, etc.
In the preferred embodiment of the present invention, the vibration unit 20 includes an inverted concave diaphragm 21 and an elastic suspension 22, wherein the elastic suspension 22 is integrally connected to the inverted concave diaphragm 21. Furthermore, the elastic suspension edge 22 is formed by an integral injection molding process, and is connected to the inverted concave diaphragm 21 simultaneously in the process. It should be noted that the speaker housing 10 further includes a connection frame 13, and the elastic suspension 22 is integrally connected to the connection frame 13 during the integral injection process. In other words, the elastic suspension 22, the inverted concave diaphragm 21 and the connecting frame 13 are integrated into an integrated part through an integral injection process, i.e., the integrated vibration structure 200 is obtained. It will be appreciated that the resilient suspension 22 is formed by an insert injection molding process. That is, the connecting frame 13 and the inverted concave diaphragm 21 are placed in a molding mold, and then the material for making the elastic suspended edge 22 is injected in a liquid form, the material for making the elastic suspended edge 22 is attached to the connecting frame 13 and the inverted concave diaphragm 21, and after cooling and solidification, the connecting frame 13 and the inverted concave diaphragm 21 can be fixed and become an integrated part.
In addition, one end of the voice coil 30 is connected to the inverted concave diaphragm 21 of the vibration unit 20, and the other end of the voice coil 30 is coupled to the voice coil unit 40, so that the voice coil 30 moves back and forth under the electromagnetic driving force of the voice coil unit 40, thereby moving the inverted concave diaphragm 21 and the elastic suspension 22 of the vibration unit 20 back and forth in the axial direction of the tweeter. It will be appreciated that the resilient suspension 22 limits the movement of the inverted concave diaphragm 21 to the axial direction of the tweeter. Accordingly, the inverted concave diaphragm 21 moves only in the axial direction of the tweeter without a displacement, so as to improve the sound quality of the tweeter.
It is worth mentioning that the tweeter of the present invention does not have the centering pads of the conventional speaker. It will be understood by those skilled in the art that the inverted-concave diaphragm 21 and the elastic suspension 22 of the present invention can also be applied to other various speakers or sound effect devices, including conventional speakers with elastic waves.
In this preferred embodiment of the present invention, the inverted concave diaphragm 21 is in the shape of a concave arc, wherein predetermined parameters of an arc height H and an arc curvature R are set with respect to the size of the tweeter, the arc height H having a value in the range of 5-7 millimeters (MM) and the arc curvature R having a value in the range of 15-20 millimeters (MM) when the diameter of the tweeter is in the range of 8-38 millimeters (MM). Further, the inverted concave diaphragm 21 has an upper plane 211 and a lower concave arc 212, wherein the upper plane 211 is circular and surrounds the lower concave arc 212, and the elastic suspension edge 22 is integrally connected to the upper plane 211 of the inverted concave diaphragm 21. The concave arc surface 212 is formed downward from the upper plane 211 in an arc. It is worth mentioning that the concave arc surface 212 is located inside the voice coil 30. In addition, the inverted concave diaphragm 21 is made of a metal material, such as an aluminum material, that is, the inverted concave diaphragm 21 is a metal diaphragm, such as an aluminum film. The inverted concave diaphragm 21 is integrally accommodated and connected when the elastic suspension edge 22 is formed.
In the preferred embodiment of the present invention, the elastic suspension 22 is made of an elastic material and is disposed between the inverted concave diaphragm 21 and the connection frame 13. Preferably, the elastic hanging edge 22 is provided between the inverted concave diaphragm 21 and the connection frame 13 in such a manner that the elastic hanging edge 22 is integrally coupled to the inverted concave diaphragm 21 and the connection frame 13. Specifically, the elastic suspended edge 22 of the present invention includes an inner suspended edge portion and an outer suspended edge portion, which may be integrally formed and may both annularly surround the circumference of the inverted concave diaphragm 21, and the inner suspended edge portion and the outer suspended edge portion are molded together and form a plane, a corrugated, an arch, or a wave structure in the direction of the cross section. In this embodiment, the inner and outer hem portions are integrally connected and form a planar structure. It should be noted that the elastic suspension 22 and the inverted-concave diaphragm 21 may be made of different materials, for example, the elastic suspension 22 may be made of a material that is relatively soft compared to the inverted-concave diaphragm 21. In this way, the combination of the elastic suspension 22 and the soft and hard material of the inverted-concave diaphragm 21 is more effective in preventing rapid transfer of a pulling stress and allowing the inverted-concave diaphragm 21 to vibrate more regularly.
In the preferred embodiment of the present invention, the magnetic return unit 40 includes a magnetic protective sleeve 41, a permanent magnet 42, and at least one magnetizer 43. The permanent magnet 42 is located below the magnetizer 43 and is placed in the magnetic protection sleeve 41, and a magnetic gap 44 is formed between the permanent magnet 42 and the magnetic protection sleeve 41. In other words, the permanent magnet 42 and the magnetizer 43 are disposed inside the magnetic protecting sleeve 41 in such a manner that the permanent magnet 42 is located at the magnetizer 42, and the magnetic gap 44 is formed between the permanent magnet 42 and the magnetic protecting sleeve 41. One end of the voice coil 30 is connected to the inverted concave diaphragm 21 of the vibration unit 20, and the other end of the voice coil 30 is coupled to the magnetic gap 44 of the magneto-rheological unit 40. The magnetic protective sleeve 41 may have a conventional U-iron structure, and the magnetizer 43 may have a conventional pole piece structure. The magnetic protective sleeve 41 and the magnetic conductor 43 guide the magnetic lines of force of the permanent magnet 42 to the magnetic gap 44, so that the magnetic return unit 40 can interact with the voice coil 30 disposed in the magnetic gap 44. That is, the magnetic protective sleeve 41, the permanent magnet 42 and the magnetizer 43 together form a magnetic field loop to generate vibration in cooperation with the voice coil 30.
In the preferred embodiment of the present invention, the permanent magnet 42 may be various magnets, or magnetic steels, such as metal-based magnets, ferrosoferrite, rare-earth magnets, etc. In the preferred embodiment of the present invention, the permanent magnet 42 may be a neodymium-iron-boron magnet. Which provides magnetic energy in the magnetic return unit 40 and forms a magnetic field return path to provide the magnetic gap 44.
In the preferred embodiment of the present invention, the panel 11 includes an annular positioning tongue 111A, an engaging groove 112A, a panel body 116, a plurality of first positioning grooves 117 and a first flange 115. The ring-shaped positioning tongue 111A extends downward from the panel body 116 in a ring shape, and a locking slot 1111A is formed on the ring-shaped positioning tongue 111A. The rear cover 12 includes a ring-shaped positioning slot 121A having a hook 1211A, such that when the front panel 11 and the rear cover 12 are assembled together, the ring-shaped positioning tongue 111A is inserted into the ring-shaped positioning slot 121A, and the hook 1211A hooks the slot 1111A. It is understood that the slot 1111A may be disposed in the ring-shaped positioning groove 121A, and the hook 1211A may be disposed in the ring-shaped positioning tongue 111A when the front plate 11 and the rear cover 12 are assembled to be coupled to each other. Therefore, it is conceivable that the annular positioning tongue 111A may be provided to the rear cover 12 and the annular positioning groove 121A may be provided to the face plate 11. The connection frame 13 includes a plurality of connection positioning tongues 131 adapted to be inserted into the corresponding first positioning grooves 117. Thus, when the connection frame 13 is positioned in the engagement groove 112A, the plurality of connection positioning tongues 131 are inserted into the plurality of first positioning grooves 117, respectively. The panel body 116 has a ring shape, and the first flange 115 extends and protrudes from the inner side of the ring shape of the panel body 116. The magnetic shield 41 includes a shield groove 412 formed from the outside of the magnetic shield 41 to the inside thereof in a ring shape, so that the first flange 115 is coupled with the shield groove 412 when the magnetic shield 41 is coupled to the panel 11.
In the preferred embodiment of the present invention, the elastic suspension 22 further comprises a connecting edge 223, which fixedly connects the elastic suspension 22 and the connecting frame 13. The elastic hanging edge 22 may be formed of an elastic material by injection molding while integrally forming the connecting edge 223, and the connecting edge 223 is received in an outer surface of the connecting frame 13, thereby connecting the elastic hanging edge 22 and the connecting frame 13.
In the preferred embodiment of the present invention, the tweeter includes a shock absorbing unit 50 disposed at the rear cover 12 of the speaker housing 10 such that the shock absorbing unit 50 supports the tweeter and reduces vibration when the tweeter is placed or assembled on a surface. Further, the damping unit 50 is made of an elastic material, so that when the tweeter is supported, the vibration generated when the tweeter is in an operating state is transmitted to the damping unit 50, and the damping unit 50 releases the vibration, thereby achieving the damping effect.
It should be noted that the present invention also provides a corresponding method for manufacturing and assembling a tweeter according to the second embodiment, which comprises the following steps:
(A) placing an inverted concave diaphragm 21 of a vibration unit 20 and a connection frame 13 of a speaker enclosure 10 in a mold;
(B) forming an elastic suspension edge 22 in the mold through an injection molding process and joining the inverted concave diaphragm 21 and the connecting frame 13;
(C) disposing a voice coil 30 between the gyromagnetic unit 40 and the vibration unit 20;
(D) joining the vibration unit 20 and the magnetic return unit 40 through a panel 11 of the speaker housing 10; and
(E) the panel 11 and a rear cover 12 of the speaker housing 10 are combined.
According to the step (a), the inverted concave diaphragm 21 is a concave arc, wherein predetermined parameters of an arc height H and an arc radian R are set with respect to the size of the tweeter, when the diameter of the tweeter is in the range of 8-38 millimeters (MM), the range value of the arc height H is 5-7 millimeters (MM), and the range value of the arc radian R is 15-20 millimeters (MM).
According to the step (D), the panel 11 is joined to the connection frame 13, and the inverted concave diaphragm 21 and the elastic suspended edge 22 of the vibration unit 20 are assembled to the panel 11.
According to step (D), a magnetic shield 41 of the magnetic return unit 40 has a shield groove 412 formed from the outside of the magnetic shield 41 to the inside of a ring, and a first flange 115 of the panel 11 extends from the inside of the ring of the panel 11, so that when the magnetic shield 41 of the magnetic return unit 40 is coupled to the panel 11 of the speaker housing 10, the first flange 115 is coupled to the shield groove 412.
Referring to fig. 12 through 14 of the drawings, a tweeter in accordance with a third preferred embodiment of the present invention is disclosed and illustrated in the following description, wherein the tweeter includes a speaker housing 10B, a vibration unit 20B, a voice coil 30B and a magnetic return unit 40B, wherein the speaker housing 10B further includes a panel 11B and a rear cover 12B provided to the panel 11B, wherein the vibration unit 20B is provided to the panel 11B of the speaker housing 10B, the magnet return unit 40B is provided to the panel 11B of the speaker enclosure 10B, and the unit 40B is held in a space formed between the panel 11B and the back cover 12B, one end of the voice coil 30B is provided to the vibration unit 20B, and the other end of the voice coil 30B is coupled to the magneto unit 40B. When the gyromagnetic unit 40B is energized, the gyromagnetic unit 40B can generate an electromagnetic force to drive the voice coil 30B to move back and forth, for example, when the gyromagnetic unit 40B responds to an input of an audio signal, the gyromagnetic unit 40B can generate an electromagnetic force to drive the voice coil 30B to move back and forth, so that the voice coil 30B can drive the vibration unit 20B to vibrate back and forth to make the vibration unit 20B generate a sound in a manner of blowing air.
Preferably, the voice coil 30B can drive the vibration unit 20B to move back and forth along the axial direction of the tweeter under the electromagnetic driving force generated by the magnetic return unit 40B, and the vibration unit 20B does not deviate from the axial direction of the tweeter during the back and forth vibration of the vibration unit 20B, in such a way that the sound effect of the tweeter can be ensured.
Specifically, the vibration unit 20B includes an inverted concave diaphragm 21B and an elastic suspended edge 22B, wherein the elastic suspended edge 22B has a suspended edge inner side 2201B and a suspended edge outer side 2202B, wherein the suspended edge inner side 2201B of the elastic suspended edge 22B is integrally joined to the inverted concave diaphragm 21B, and the suspended edge outer side 2202B of the elastic suspended edge 22B is integrally joined to the panel 11B of the speaker frame 10B. That is, the elastic hanging sides 22B extend inward and outward to be integrally coupled to the inverted concave diaphragm 21B and the panel 11B of the speaker frame 10B, respectively, so that no glue is required between the hanging side inner side 2201B of the elastic hanging side 22B and the inverted concave diaphragm 21B and between the hanging side outer side 2202B of the elastic hanging side 22B and the inverted concave diaphragm 21B, and it is possible to reduce the manufacturing process of the tweeter, on the one hand, and prevent the elastic hanging side 22B from coming off the inverted concave diaphragm 21B and the panel 11B of the speaker frame 10B, on the other hand, and more importantly, the elastic hanging side 22B and the inverted concave diaphragm 21B have consistency in each coupling position, so that the inverted concave diaphragm 21B can be restrained by the elastic hanging side 22B to prevent the inverted concave diaphragm 21B from deviating from the tweeter during the back-and forth vibration of the vibration unit 20B The axial direction of the acoustic device, and thus the pureness of the tweeter is ensured to enhance the treble effect of the tweeter.
It will be understood by those skilled in the art that the speaker of the prior art uses glue for bonding the suspended edge and the diaphragm and for bonding the suspended edge and the panel, and the glue has fluidity, which results in poor conformity of the suspended edge and the diaphragm at each bonding position and poor conformity of the suspended edge and the panel at each bonding position, whereas in the tweeter of the present invention, the suspended edge inner side 2201B of the elastic suspended edge 22B is integrally bonded to the undercut diaphragm 21B in such a manner that the suspended edge inner side 2201B of the elastic suspended edge 22B and the undercut diaphragm 21B are ensured in conformity at each bonding position during molding of the elastic suspended edge 22B and the suspended edge outer side 2202B of the elastic suspended edge 22B is integrally bonded to the undercut diaphragm 21B in such a manner that the suspended edge outer side 2202B of the elastic suspended edge 22B and the panel 11B are ensured in conformity at each bonding position, this is crucial to ensure reliability and sound quality of the tweeter.
The panel 11B and the inverted concave diaphragm 21B and the elastic suspended edge 22B integrally combined with the panel 11B and the inverted concave diaphragm 21B, respectively, can form a vibration structure 200B of the tweeter. In other words, the tweeter of the present invention has the vibration structure 200B integrated therewith. Fig. 15 to 17 show a process of manufacturing the vibration structure 200B of the tweeter. Fig. 18-20 further illustrate the manufacturing process of the tweeter.
Specifically, at the stage shown in fig. 15 and fig. 16, the panel 11B and the inverted concave diaphragm 21B in a ring shape are provided, and the panel 11B and the inverted concave diaphragm 21B are placed in a lower mold 91B of a molding mold 90B in such a manner that the inverted concave diaphragm 21B is located in the middle of the panel 11B, and then an upper mold 92B of the molding mold 90B is clamped with the lower mold 91B, so that a molding space 93B is formed between the upper and/or lower portion of the panel 11B, the upper and/or lower portion of the inverted concave diaphragm 21B, and the panel 11B and the inverted concave diaphragm 21B, and at least one gap 300B communicating with the molding space 93B is formed between the inverted concave diaphragm 21B and the upper mold 92B and/or the lower mold 91, and at least one gap 300B is formed between the panel 11 and the upper mold 92B and/or the panel 11B, and a space 400 is formed between the face plate 11B and the inverted concave diaphragm 21B. It should be understood that the space 400 is formed between the inner wall of the panel 11B and the outer wall of the inverted concave diaphragm 21B. In general, the inner wall of the panel 11B is a perfect circle, and the outer wall of the inverted concave diaphragm 21B is a perfect circle, after the inverted concave diaphragm 21B is disposed in the middle of the panel 11B, the annular space 400 is formed between the inner wall of the panel 11B and the outer wall of the inverted concave diaphragm 21B, and the distance from the inner wall of the panel 11 to the outer wall of the inverted concave diaphragm 21B is uniform at any position. Preferably, the center point of the panel 11B and the center point of the inverted concave diaphragm 21B are the same, that is, the center point of the panel 11B and the center point of the inverted concave diaphragm 21B are the same. It is worth mentioning that the panel 11B is a ring-shaped panel, and therefore, in the tweeter of the present invention, the center axis of the tweeter passes through the center point of the panel 11B, while the center axis of the tweeter passes through the center point of the inverted concave diaphragm 21B.
At the stage shown in fig. 16, a fluid-like molding material 100B is injected into the molding space 93B of the molding die 90B so that the molding material 100B fills the entire molding space 93B, and at this time, the molding material 100B covers the upper and/or lower portion of the panel 11B and the upper and/or lower portion of the inverted concave diaphragm 21B while the molding material 100B is held in the space between the panel 11B and the inverted concave diaphragm 21B. In other words, the molding material 100B is guided to fill each of the gap 300B and the space 400B. That is, the molding material 100B can be guided to fill the gap 300B formed between the panel 11B and the upper mold 92B to cover the surface of the panel 11B, guided to fill the gap 300B formed between the inverted concave diaphragm 21B and the upper mold 92B to cover the surface of the inverted concave diaphragm 21B, and guided to fill the space 400B formed between the panel 11B and the inverted concave diaphragm 21B. It is to be noted that the type of the molding material 100B is not limited in the tweeter of the present invention as long as it can be deformed after being cured to form the elastic suspension 22B. For example, the molding material 100B may be, but is not limited to, a fluid rubber. It should be noted that the curing manner of the molding material 100B is not limited in the tweeter of the present invention, and the molding material 100B may be cured by any feasible manner, such as heating or cooling.
At the stage shown in fig. 17, after the molding material 100B is solidified in the molding space 93B, a die-drawing operation is performed on the lower die 91B and the upper die 92B of the molding die 90B to obtain the integrated vibrating structure 200B. It should be noted that the specific example shown in fig. 17 in which the inner suspension side 2201B of the elastic suspension side 22B is coated on the upper surface of the inverted concave diaphragm 21B and the outer suspension side 2202B of the elastic suspension side 22B is coated on the upper surface of the panel 11B is merely an example, and it should not be construed as limiting the content and scope of the tweeter of the present invention.
The elastic suspended edge 22B includes a suspended edge main body 221B, an inner connecting edge 224B integrally formed with the suspended edge main body 221B and surrounding the inner side of the suspended edge main body 221B, and an outer connecting edge 225B integrally formed with the suspended edge main body 221B and surrounding the outer side of the suspended edge main body 221B, wherein the inner connecting edge 224B of the elastic suspended edge 22B is integrally joined to the inverted concave diaphragm 21B, and the inner connecting edge 224B of the elastic suspended edge 22B forms the suspended edge inner side 2201B of the elastic suspended edge 22B, wherein the outer connecting edge 225B of the elastic suspended edge 22B is integrally joined to the panel 11B, and the outer connecting edge 225B of the elastic suspended edge 22B forms the suspended edge outer side 2202B of the elastic suspended edge 22B.
It is worth mentioning that, compared to the conventional way of bonding the inner connecting edge 224B of the elastic hanging edge 22B and the inverted concave diaphragm 21B and bonding the outer connecting edge 225B of the elastic hanging edge 22B and the panel 11B by glue, the elastic hanging edge 22B does not need to be provided in advance, so that the manufacturing process of the tweeter can be reduced, the process difficulty of the tweeter can be reduced, and the manufacturing cost of the tweeter can be effectively reduced. More importantly, during the process of forming the elastic suspension edge 22B, the elastic suspension edge 22B can be held between the panel 11B and the inverted concave diaphragm 21B in such a manner that the inner connecting edge 224B of the elastic suspension edge 22B is integrally bonded to the inverted concave diaphragm 21B and the outer connecting edge 225B is integrally bonded to the panel 11B, so as to ensure the consistency of the respective bonding positions of the inner connecting edge 224B of the elastic suspension edge 22B and the inverted concave diaphragm 21B and the consistency of the respective bonding positions of the outer connecting edge 225B of the elastic suspension edge 22B and the panel 11B, so that during the process of driving the inverted concave diaphragm 21B to vibrate back and forth by the voice coil 30B, the elastic suspension edge 22B can ensure that the inverted concave diaphragm 21B vibrates back and forth only along the axial direction of the tweeter, and avoid the contrary concave vibrating diaphragm 21B is skew the bad phenomenon of high pitch loudspeaker's axial direction appears, thereby guarantees high pitch loudspeaker's high pitch audio.
In addition, during the process of molding the elastic suspended edge 22B, the elastic suspended edge 22B can be held between the panel 11B and the inverted concave diaphragm 21B in such a manner that the inner connecting edge 224B of the elastic suspended edge 22B is integrally joined to the inverted concave diaphragm 21B and the outer connecting edge 225B is integrally joined to the panel 11B, so that the inner connecting edge 224B of the elastic suspended edge 22B can be reliably joined to the inverted concave diaphragm 21B, and the outer connecting edge 225B of the elastic suspended edge 22B can be reliably joined to the panel 11B, so that the inner connecting edge 224B of the elastic suspended edge 22B can be prevented from coming off or coming loose from the inverted concave diaphragm 21B and/or the outer connecting edge 225B of the elastic suspended edge 22B from the panel 11B during the back-and-forth vibration of the inverted concave diaphragm 21B by the voice coil 30B, thereby ensuring reliability of the tweeter when used.
Preferably, the panel 11B has at least one engaging groove 112B, and at the stage shown in fig. 15, the engaging groove 112B of the panel 11B faces the upper mold 92B of the molding mold 90B, and the engaging groove 112B of the panel 11B communicates with the molding space 93B, so that at the stage shown in fig. 16, the molding material 100B added to the molding space 93B flows into and fills the engaging groove 112B of the panel 11B, so that at least a part of the outside connecting edge 225B of the elastic hanging edge 22B is received in the engaging groove 112B of the panel 11B after the molding material 100B is cured, in such a manner that the outside connecting edge 225B of the elastic hanging edge 22B can be more reliably bonded to the panel 11B. Preferably, the entire portion of the outside connecting edge 225B of the elastic hanging edge 22B may be received in the engaging groove 112B of the panel 11B, in such a manner as to facilitate reduction in the height dimension of the tweeter, thereby facilitating miniaturization of the tweeter.
In some examples of the tweeter of the present invention, the engagement groove 112B of the panel 11B may be an annular engagement groove, and in other examples of the tweeter of the present invention, at least a portion of the upper surface of the panel 11B forms at least one of the engagement grooves 112B by being recessed, and if the number of the engagement grooves 112B of the panel 11B exceeds two, adjacent engagement grooves 112B are independent of each other. In addition, the shape and size of the engagement groove 112B are not limited in the tweeter of the present invention, which allows selection as needed.
More preferably, the panel 11B has at least one joining through-hole 113B, wherein the joining through-hole 113B penetrates through the upper and lower surfaces of the panel 11B, and in this specific example of the tweeter shown in fig. 12 to 14, the joining through-hole 113B communicates with the joining groove 112B, wherein the elastic suspended edge 22B further includes at least one suspended edge joining portion 226B, wherein the suspended edge joining portion 226B integrally extends downward from the outer peripheral edge of the outside connecting edge 225B, and the suspended edge joining portion 226B is held in the joining through-hole 113B of the panel 11B, in such a manner that the joining strength of the elastic suspended edge 22B and the panel 11B can be further increased. For example, at the stage shown in fig. 15, the joining through hole 113B of the panel 11B communicates with the molding space 93B, so that at the stage shown in fig. 16, the molding material 100B added to the molding space 93B flows into and fills the joining through hole 113B of the panel 11B, and the suspended edge joining portion 226B of the elastic suspended edge 22B is held in the joining through hole 113B of the panel 11B after the molding material 100B is cured.
It is worth mentioning that the shape and size of the joining penetration hole 113B of the panel 11B are not limited in the tweeter of the present invention, for example, in some examples of the tweeter of the present invention, the joining penetration hole 113B of the panel 11B is a straight-tube type penetration hole. In yet other examples of the tweeter of the present invention, the engagement through-hole 113B of the panel 11B is a through-hole of an inverted cone shape, that is, an inner diameter dimension of a portion of the engagement through-hole 113B near the upper surface of the panel 11B is smaller than an inner diameter dimension of a portion of the engagement through-hole 113B near the lower surface of the panel 11B. Of course, in other examples of the tweeter of the present invention, the joint hole 113B of the panel 11B may be a sectional hole, for example, the joint hole 113B of the panel 11B is a two-sectional hole, wherein the upper section of the joint hole 113B is close to the upper surface of the panel 11B, the lower section of the joint hole 113B is close to the lower surface of the panel 11B, and the inner diameter of the upper section of the joint hole 113B is smaller than the inner diameter of the lower section of the joint hole 113B.
Further, the panel 11B has a holding groove 114B, wherein the holding groove 114B of the panel 11B is formed in a lower surface of the panel 11B, wherein after the molding material 100B is added to the molding space 93B, the molding material 100B enters the holding groove 114B of the panel 11B through the joining through-hole 113B of the panel 11B, and a suspended edge holding portion 227B integrally joined to the suspended edge joining portion 226B is formed in the holding groove 114B of the panel 11B, in such a manner that the outside connecting edge 225B of the elastic suspended edge 22B can be further prevented from falling off from the panel 11B.
Since the suspended edge is adhered to the panel by the glue in the tweeter of the prior art, the suspended edge can be bonded only to the surface of the panel, and this structure easily causes the suspended edge to come off the panel. In the tweeter of the present invention, however, during the formation of the elastic beads 22B by the fluid-like molding material 100B, the outer connecting edge 225B of the elastic suspended edge 22B is integrally joined to the panel 11B, so that by providing the engaging groove 112B on the upper surface of the panel 11B and providing the engaging through-hole 113B penetrating the panel 11B, and the holding groove 114B is provided on the lower surface of the panel 11B, the outer connecting edge 225B, the suspended edge joint portion 226B, and the suspended edge holding portion 227B of the elastic suspended edge 22B can be formed in the joint groove 112B, the joint penetration hole 113B, and the holding groove 114B of the panel 11B, in this way, the elastic suspended edge 22B can be reliably bonded to the panel 11B, which is unexpected for the tweeter of the prior art.
In a modified example of the tweeter shown in fig. 21, the inverted concave diaphragm 21B may also have at least one diaphragm engagement groove 210B, in which a part of the inner connecting edge 224B of the elastic suspended edge 22B is received in the diaphragm engagement groove 210B of the inverted concave diaphragm 21B, in such a manner that the inner connecting edge 224B of the elastic suspended edge 22B can be more reliably coupled to the panel 11B. In yet another modified example of the tweeter shown in fig. 22, the inner connecting edge 224B of the elastic suspended edge 22B may be bonded to both the upper surface and the lower surface of the inverted concave diaphragm 21B, that is, the inner connecting edge 224B of the elastic suspended edge 22B may wrap a portion of the outer peripheral edge of the inverted concave diaphragm 21B, in such a manner that the inner connecting edge 224B of the elastic suspended edge 22B may be more reliably bonded to the panel 11B, so as to prevent the inner connecting edge 224B of the elastic suspended edge 22B from being detached from the inverted concave diaphragm 21B during the back-and-forth vibration of the inverted concave diaphragm 21B driven by the voice coil 30B, thereby ensuring the reliability of the tweeter during use.
Further, the elastic suspension 22B includes a plurality of elastic ribs 222B integrally extended from the suspension main body 221B, wherein in this specific example of the tweeter shown in fig. 12 to 14, each of the elastic ribs 222B is protrudingly extended from the suspension main body 221B, and distances between adjacent two of the elastic ribs 222B are equal. In yet another specific example of the tweeter shown in fig. 23, each of the elastic ribs 222B extends concavely to the suspended side body 221B, and the distances between adjacent two of the elastic ribs 222B are equal. In another specific example of the tweeter shown in fig. 24, the elastic rib 222B extending concavely from the skirt body 221B is provided on both sides of the elastic rib 222B extending convexly from the skirt body 221B. Fig. 25 shows a specific example of the tweeter, the spring ribs 222B include a group of inner spring ribs 2221B and a group of outer spring ribs 2222B, wherein each of the inner spring ribs 2221B extends from a side of the suspension main body 221B near the inner connecting edge 224B to a side of the suspension main body 221B near the outer connecting edge 225B, and each of the outer spring ribs 2222B extends from a side of the suspension main body 221B near the outer connecting edge 225B to a side of the suspension main body 221B near the inner connecting edge 224B, and any one of the inner spring ribs 2221B extends between adjacent ones of the outer spring ribs 2222B, and any one of the outer spring ribs 222B extends between adjacent ones of the inner spring ribs 2221B. The elastic rib 222B is used to enhance the rigidity of the elastic suspension edge 22B, so that when the inverted concave diaphragm 21B is driven by the voice coil 30B to vibrate back and forth to drive the elastic suspension edge 22B to deform synchronously, if the inverted concave diaphragm 21B has a tendency of tilting toward one side, the part of the elastic suspension edge 22B opposite to the side pulls the inverted concave diaphragm 21B to prevent the inverted concave diaphragm 21B from tilting toward the side, and in this way, the elastic suspension edge 22B can always limit the inverted concave diaphragm 21B from vibrating back and forth only along the axial direction of the tweeter. Also, since the elastic rib 222B can restrict the inverted concave diaphragm 21B from vibrating back and forth only in the axial direction of the tweeter in such a manner as to enhance the rigidity of the elastic suspension 22B, the tweeter may not require a centering pad of the tweeter of the related art, which not only can reduce the manufacturing cost of the tweeter, but also facilitates the miniaturization of the tweeter so that the volume of the tweeter can be further reduced, thereby expanding the applicable range of the tweeter, for example, the tweeter of the present invention is applied to a head mounted sound effect device such as an earphone. More importantly, the tweeter of the present invention does not require a centering support, so that the distance between the voice coil 30B and the inner wall of the speaker housing 10B can be effectively shortened, and thus, the voice coil 30B can be effectively prevented from deviating from the axial direction of the tweeter during driving by the electromagnetic force generated by the magnetic return unit 40B, and the undercut diaphragm 21B can be prevented from deviating from the axial direction of the tweeter. Preferably, these elastic ribs 222B of the elastic hanging edge 22B are arranged spirally to provide the inverted concave diaphragm 21B with a centripetal force toward the center axis of the tweeter, so that the vibration direction of the inverted concave diaphragm 21B is restricted to the axial direction of the tweeter.
It is to be noted that the shape of the elastic rib 222B of the elastic suspension 22B is not limited in the tweeter of the present invention, and for example, the cross section of the elastic rib 222B may be arcuate, triangular, quadrangular, polygonal, semicircular, semi-elliptical, inverted U-shaped, inverted V-shaped, or the like.
It should be noted that the sectional shape of the suspended edge main body 221B of the elastic suspended edge 22B is not limited in the tweeter of the present invention, and for example, the sectional shape of the suspended edge main body 221B of the elastic suspended edge 22B may be, but not limited to, a corrugated shape, an arch shape, or a wave shape.
Further, the inverted concave diaphragm 21B further includes a concave diaphragm portion 213B and a diaphragm coupling portion 214B integrally formed on the concave diaphragm portion 213B and surrounding the circumference of the concave diaphragm portion 213B, that is, the diaphragm coupling portion 214B extends outward from the circumference of the concave diaphragm portion 213B. Preferably, the extension direction of the diaphragm coupling portion 214B is perpendicular to the axial direction of the tweeter. The inner connecting edge 224B of the elastic suspended edge 22B is integrally joined to the diaphragm joining portion 214B of the inverted concave diaphragm 21B. The material of the inverted concave diaphragm 21B is not limited in the tweeter of the present invention, and preferably, the material forming the inverted concave diaphragm 21B may be an alloy material or a metal material, such as aluminum. That is, the inverted concave diaphragm 21B may be an alloy diaphragm or a metal diaphragm, and in this way, the strength of the inverted concave diaphragm 21B can be ensured so that the vibration amplitudes of the inverted concave diaphragm 21B at various positions have uniformity when the inverted concave diaphragm 21B is driven by the voice coil 30B, so as to enhance the high-pitched sound effect of the high-pitched speaker.
It should be noted that, the molding manner of the inverted concave diaphragm 21B is not limited in the tweeter of the present invention, for example, in some specific examples of the tweeter, the inverted concave diaphragm 21B may be formed by stamping, that is, firstly, an inverted concave diaphragm template is provided, for example, the inverted concave diaphragm template may be a metal template or an alloy template, and then the middle of the inverted concave diaphragm template is recessed downwards by a stamping process, so that the middle of the inverted concave diaphragm template forms the concave diaphragm portion 213B of the inverted concave diaphragm 21B, and the periphery of the inverted concave diaphragm template forms the diaphragm combining portion 214B of the inverted concave diaphragm 21B, that is, the diaphragm combining portion 214B and the concave diaphragm portion 213B of the inverted concave diaphragm 21B are an integral structure. In other specific examples of the tweeter, the inverted concave diaphragm 21B may be an injection molded part, that is, a fluid metal material or an alloy material is added to an inverted concave diaphragm forming mold, and the inverted concave diaphragm 21B is formed when the fluid metal material or the alloy material is solidified in the inverted concave diaphragm forming mold and after a mold-drawing process is performed on the inverted concave diaphragm forming mold.
The size of the inverted concave diaphragm 21B of the tweeter is provided so that the tweeter with the inverted concave diaphragm 21B can also emit high-pitched sound of high frequency above 2560Hz, even with the inverted concave diaphragm 21B the tweeter can emit high-pitched sound of ultra-high frequency above 40 kHz. Specifically, the arc height parameter of the inverted concave diaphragm 21B is H and the arc radian parameter is R, wherein the range of the arc height parameter H of the inverted concave diaphragm 21B is 5mm to 7mm (including 5mm and 7mm), and the range of the arc radian parameter R is 10mm to 20mm (including 10mm and 20 mm). Through the test of an electroacoustic test system, when the arc height parameter H of the inverted concave diaphragm 21B of the tweeter is 5mm-7mm and the arc radian parameter R of the tweeter is 10mm-20mm, the waveform shown in figure 11 can be obtained, which shows that the tweeter can emit high pitch with high frequency of 2560kHz, and even the tweeter can emit high pitch with high frequency of 40kHz, which is unexpected for the tweeter in the prior art, and the structure of the tweeter overcomes the technical bias of the skilled person. It is considered by those skilled in the art that the tweeter of the prior art can generate high pitch sound only by providing the middle portion of the structure of the diaphragm as a protrusion, and the high frequency of the high pitch loudspeaker in the prior art is commonly around 20kHz-2560Hz, in the tweeter of the present invention, the inverted concave diaphragm 21B has an inwardly concave shape, and because the value of the arc height parameter H of the inverted concave diaphragm 21B is selected to be 5mm-7mm and the value of the arc radian parameter R is selected to be 10mm-20mm, the tweeter is capable of generating high-quality high-frequency treble with a high frequency above 2560Hz, and even high-quality high-frequency treble with a high frequency above 40kHz, which overcomes the technical prejudice of the skilled person, and the tweeter of the present invention has the unexpected technical effect of the tweeter of the prior art.
In addition, the inverted concave diaphragm 21B of the tweeter of the present invention is concave, so that the high pitch generated by the tweeter can be converged, and compared with the tweeter of the prior art which adopts a diaphragm with a convex structure, the high pitch generated by the tweeter of the present invention can be converged due to the structure of the inverted concave diaphragm 21B, so that the high pitch of the tweeter can be more concentrated, thereby expanding the application range of the tweeter. For example, the tweeter of the present invention is suitable for application to a head-mounted sound effect device such as an earphone.
Preferably, the range of the arc height parameter H of the inverted concave diaphragm 21B is 5.5mm to 6.5mm (including 5.5mm and 6.5mm), and preferably 6mm, and the range of the arc radian parameter R of the inverted concave diaphragm 21B is 16mm to 18mm (including 16mm and 18mm), for example, 17 mm.
In addition, the tweeter may have a diameter size of at least 8mm (including 8mm) to facilitate miniaturization of the tweeter. Preferably, the diameter of the tweeter is in the range of 8mm to 38mm (including 8mm and 38 mm). More preferably, the diameter of the tweeter ranges from 10mm to 15mm (including 10mm and 15mm), or from 15mm to 20mm (including 20mm), or from 20mm to 30mm (including 30mm), or from 30mm to 38 mm.
At the stage shown in fig. 18, one end of the voice coil 30B may be provided on the lower surface of the concave diaphragm portion 213B of the inverted concave diaphragm 21B. It should be noted that the manner in which the voice coil 30B is provided on the lower surface of the concave diaphragm portion 213B of the inverted concave diaphragm 21B is not limited in the tweeter of the present invention.
At the stage shown in fig. 19, the back cover 12B provided with the gyromagnetic unit 40B is provided. Specifically, the magnet returning unit 40B includes a magnet protecting cover 41B, a permanent magnet 42B, and a magnetizer 43B, wherein the permanent magnet 42B and the magnetizer 43B are disposed inside the magnet protecting cover 41B in such a manner that the permanent magnet 42B is held at a lower portion of the magnetizer 43B, and a magnetic gap 44B is formed between the permanent magnet 42B and the magnet protecting cover 41B so as to be capable of being coupled to the voice coil 30B. The magnetic protection sleeve 41B, the permanent magnet 42B and the magnetizer 43B can cooperate with each other to form a magnetic field loop, so as to drive the voice coil 30B to move back and forth in cooperation with the voice coil 30B subsequently.
It should be noted that the type of the permanent magnet 42B is not limited in the tweeter of the present invention, and for example, the permanent magnet 42B may be various magnets, or magnetic steel, such as a metal magnet, a ferro-magnetite, a rare earth magnet, or the like. In the preferred embodiment of the present invention, the permanent magnet 42B may be a neodymium iron boron magnet.
In addition, the magnetic protection sleeve 41B, the permanent magnet 42B and the magnetizer 43B of the magnetic return unit 40B may be integrally formed through a conventional glue bonding process, or may be integrally formed through an injection molding process.
Further, the magnetic return unit 40B includes a magnetic return connector 48B, wherein the magnetic return connector 48B includes an annular connector body 481B and at least one connector flange 482B, wherein the connector flange 482B integrally extends from the connector body 481B inward, wherein the magnetic protecting cover 41B has at least one protecting cover groove 412B, wherein the magnetic return connector 48B is combined with the magnetic protecting cover 41B in such a manner that the connector flange 482B of the magnetic return connector 48B is engaged with the protecting cover groove 412B of the magnetic protecting cover 41B.
At the stage shown in fig. 20, the magnetic return connector 48B and the face plate 11B are bonded together, and then, the face plate 11B and the back cover 12B are bonded together, so that the magnetic return unit 40B is held between the face plate 11B and the back cover 12B by the magnetic return connector 48B. Specifically, in this particular example of the tweeter shown in fig. 12 to 14, the magnetic return connector 48B further has a plurality of positioning grooves 483B, and the face plate 11B has a plurality of positioning tongues 111B, wherein the face plate 11B and the magnetic return connector 48B are coupled to each other in such a manner that each of the positioning tongues 111B of the face plate 11B is inserted into and held in each of the positioning grooves 483B of the magnetic return connector 48B, respectively. In addition, the positioning tongue 111B and the inner wall of the magnetic return connecting piece 48B for forming the positioning groove 483B may be bonded to each other by glue. It is worth mentioning that the combination of the panel 11B and the back cover 12B is not limited in the tweeter of the present invention, and for example, the combination of the panel 11B and the back cover 12B may be a snap assembly, a screw assembly, a heat fusion, an ultrasonic bonding, or the like.
Further, the tweeter further includes a damping unit 50B, wherein the damping unit 50B is disposed on the rear cover 12B of the speaker housing 10B, and when the tweeter is mounted on or disposed on or placed on a surface of an object, the damping unit 50B is capable of reducing vibration of the tweeter in such a manner as to be held between the rear cover 12B and the surface of the object, thereby further improving a vibration effect of the tweeter. Preferably, the shock-absorbing unit 50B is made of an elastic material.
In this specific example of the tweeter of the present invention, referring to fig. 12 to 14, the tweeter further includes a protective cover 60B having a hole, wherein the protective cover 60B is provided to the panel 11B, and the protective cover 60B is held in the sound wave emitting direction of the vibration unit 20B, for protecting the vibration unit 20B and enhancing the aesthetic appearance of the tweeter.
According to another aspect of the present invention, the present invention further provides a method of manufacturing a tweeter, wherein the method of manufacturing includes the steps of:
(I) the inverted concave diaphragm 21B and the face plate 11B are placed in a lower mold 91B of a molding mold 90B in such a manner that the inverted concave diaphragm 21B is held in the middle of an annular face plate 11B and an annular space 400B is formed between the inverted concave diaphragm 21B and the face plate 11B. In general, the shape of the external appearance of the inverted concave diaphragm 21B is a perfect circle, and the shape of the inner wall of the panel 11B is also a perfect circle, so in this preferred example of the tweeter of the present invention, the space 400B formed between the outer wall of the inverted concave diaphragm 21B and the inner wall of the panel 11B is a ring-shaped space, and the distance from the outer wall of the inverted concave diaphragm 21B to the inner wall of the panel 11B is equal at any one position.
(II) a molding space 93B is formed between an upper mold 92B and a lower mold 91B of the molding mold 90B in such a manner that the upper mold 92B and the lower mold 91B are clamped, wherein at least one gap 300B communicating with the molding space 93B is formed between at least a portion of the inverted concave diaphragm 21B and at least a portion of the panel 11B and the upper mold 92B and/or the lower mold 91B, respectively. In other words, the gap 300B is formed between at least a portion of the inverted concave diaphragm 21B and the upper mold 92B and/or the lower mold 91B, and the gap 300B is formed between at least a portion of the panel 11B and the upper mold 92B and/or the lower mold 91B.
For example, in the manufacturing process of this specific example of the tweeter shown in fig. 12 to 14, the gap 300B is formed between at least a part of the upper surface of the inverted concave diaphragm 21B and the upper mold 92B, and the gap 300B is formed between at least a part of the upper surface of the panel 11B and the upper mold 92B, as shown with reference to fig. 15, in which the gap 300B formed between the upper surface of the inverted concave diaphragm 21B and the upper mold 92B and the gap 300B formed between the upper surface of the panel 11B and the upper mold 92B both communicate with the molding space 93B.
(III) filling the molding space 93B and the gap 300B with a fluid-like molding material 100B added to the molding space 93B. Referring to the stage shown in fig. 16, after the molding material 100B is added to the molding space 93B, the molding material 100B fills the space 400B formed between the panel 11B and the inverted concave diaphragm 21B, and flows and fills from the space 400B to the gap 300B formed between the upper surface of the inverted concave diaphragm 21B and the upper mold 92B and the gap 300B formed between the upper surface of the panel 11B and the upper mold 92B.
(IV) after the molding material 100B is cured, performing a mold-drawing operation on the upper mold 92B and the lower mold 91B of the molding mold 90B to form an elastic overhang 22B integrally bonded to the undercut diaphragm 21B and the panel 11B between the undercut diaphragm 21B and the panel 11B. It is worth mentioning that the manner of curing the molding material 100B is not limited in the tweeter of the present invention.
(V) disposing one end of a voice coil 30B at a lower portion of the inverted concave diaphragm 21B, and coupling the other end of the voice coil 30B to a magneto-return unit 40B to manufacture the tweeter.
According to another aspect of the present invention, the present invention further provides a method of manufacturing a tweeter, wherein the method of manufacturing includes the steps of:
(i) curing a fluid-like molding material 100B to form an elastic suspended edge 22B between an inverted concave diaphragm 21B and a panel 11B; and
(ii) setting one end of a voice coil 30B in the lower portion of the inverted concave diaphragm 21B, and coupling the other end of the voice coil 30B to a magnetic loop unit 40B, so as to manufacture the tweeter, wherein an arc height parameter of a concave diaphragm portion 213B of the inverted concave diaphragm 21B is H, an arc radian parameter of the concave diaphragm portion 213B of the inverted concave diaphragm 21B is R, wherein a value range of the arc height parameter H of the concave diaphragm portion 213B of the inverted concave diaphragm 21B is: h is not less than 5mm and not more than 7mm, and the value range of the arc radian parameter R of the concave diaphragm part 213B of the inverted concave diaphragm 21B is as follows: r is more than or equal to 10mm and less than or equal to 20 mm.
According to another aspect of the present invention, the present invention further provides an audio effect reproducing method for a tweeter, wherein the audio effect reproducing method comprises the steps of:
(α) generating an electromagnetic driving force to drive a voice coil 30B to move back and forth along an axial direction of the tweeter; and
(β) a reverse concave diaphragm 21B generates and converges high frequency sound waves to reproduce sound effects when it is vibrated back and forth in the axial direction of the tweeter by the voice coil 30B to blow air.
Preferably, in the (β), the inverted concave diaphragm 21B is restricted from vibrating back and forth only in the axial direction of the tweeter by an elastic hanging edge 22B integrally bonded to the inverted concave diaphragm 21B and a panel 11B surrounding the periphery of the inverted concave diaphragm 21B.
Referring to fig. 26 to 32 of the specification of the present invention, another modified embodiment of a tweeter according to the present invention will be explained in the following description. The diaphragm structure and the manufacturing process form the high-quality high pitch loudspeaker, the manufacturing process is simplified and the manufacturing process quality is improved besides the manufacturing cost is reduced. Referring to fig. 26 to 28, the tweeter includes a speaker housing 10C, a vibration unit 20C, a voice coil 30C, and a magnetic return unit 40C. The vibration unit 20C, the voice coil 30C, and the magnet return unit 40C are accommodated in the speaker housing 10C. Further, the vibration unit 20C is disposed at the speaker housing 10C, one end of the voice coil 30C is connected to the vibration unit 20C, and the other end of the voice coil 30C is coupled to the magnet unit 40C. That is, the voice coil 30C is located between the vibration unit 20C and the magnet unit 40C, and the speaker housing 10C accommodates the vibration unit 20C, the voice coil 30C, and the magnet unit 40C therein. It is worth mentioning that the voice coil 30C moves back and forth under the electromagnetic driving force of the magnetic return unit 40C, so that the vibration unit 20C is driven by the voice coil 30C to move back and forth along the axial direction thereof, so that the vibration unit 20C blows the air in and around the tweeter to generate sound.
Referring to fig. 26 and 28, in the preferred embodiment of the present invention, the speaker housing 10C includes a front panel 11C and a back cover 12C, and the front panel 11C is combined with the back cover 12C to accommodate the vibration unit 20C, the voice coil 30C, and the magneto-return unit 40C therein. In other words, the vibration unit 20C, the voice coil 30C, and the gyromagnetic unit 40C are held in a space formed between the face plate 11C and the back cover 12C. It should be noted that the panel 11C and the rear cover 12C may be combined together in various ways, such as a locking component, a thread component, thermal welding, ultrasonic bonding, etc. which are matched with each other. Taking the tweeter of the present embodiment as an example, the panel 11C of the speaker housing 10C may be an upper housing, and the rear cover 12C may be a lower housing.
Referring to fig. 27 and 28, the vibration unit 20C includes an inverted concave diaphragm 21C, wherein the inverted concave diaphragm 21C extends to an upper portion of the panel 11C, and the panel 11C is capable of providing an upward supporting force to the inverted concave diaphragm 21C, so that the inverted concave diaphragm 21C is stably held on the panel 11C. That is, in this particular embodiment, the tweeter realizes a structure without a dangling edge, thereby simplifying a manufacturing process and reducing a manufacturing cost.
Further, the vibration unit 20C includes an engaging element 22C, and the engaging element 22C is disposed on the inverted concave diaphragm 21C and the panel 11C of the speaker housing 10C and fixes the inverted concave diaphragm 21C to the panel 11C of the speaker housing 10C.
Preferably, the joint element 22C is integrally formed with the inverted concave diaphragm 21C and the face plate 11C. Further, the joint element 22C adopts an integral injection process and fixes the inverted concave diaphragm 21C to the panel 11C in the process. It is worth mentioning that the joint member 22C is integrally formed on the inverted concave diaphragm 21C and the panel 11C of the speaker housing 10C at the same time in an integral injection process. In other words, the joining member 22C, the inverted concave diaphragm 21C, and the panel 11C are joined as an integrated part through an integral injection process to form a vibration structure 200C of the tweeter, wherein the vibration structure 200C is an integrated vibration structure, which ensures the consistency of joining the joining member 22C with the inverted concave diaphragm 21C and the panel 11C, thereby improving the stability and reliability of the tweeter. It will be appreciated that the engagement element 22C is made by an insert injection molding process. That is, the panel 11C and the inverted concave diaphragm 21C provided to the inverted concave diaphragm 21C are placed in a molding die, and then a material for manufacturing the joint member 22C is injected in a liquid form, the material for manufacturing the joint member 22C is attached to the panel 11C and the inverted concave diaphragm 21C, the joint member 22C is formed on the upper surfaces of the panel 11C and the inverted concave diaphragm 21C after cooling and solidification, and the joint member 22C can fix the panel 11C to the inverted concave diaphragm 21C, and make the joint member 22C, the inverted concave diaphragm 21C, and the panel 11C an integrated part.
It should be noted that the material of the joint element 22C is not limited, and the joint element 22C may be any material as long as the undercut diaphragm 21C can be fixed to the panel 11C of the speaker housing 10. In this particular embodiment of the invention, the engagement element 22C is made of a material having elasticity, such as, but not limited to, rubber.
In this preferred embodiment of the invention, the inverted concave diaphragm 21C is in the shape of a concave arc, wherein predetermined parameters of an arc height and an arc are set with respect to the size of the tweeter, the tweeter diameter is suitably in the range of 8-38 millimeters (MM), the arc height is in the range of 5-7 MM (MM), and the arc is in the range of 15-20 MM (MM). Preferably, the tweeter is suitably 10-20 mm in diameter. More preferably, the tweeter is suitably 10-15 mm or 15-20 mm in diameter. The arc height H ranges from 5.5 to 6.5 mm. The arc radian R ranges from 16 to 18mm, for example 17 mm.
The arc height of the inverted concave diaphragm 21C of the present invention is selected to be in the range of 5-7 mm, and at the same time, the arc radian of the inverted concave diaphragm 21C is selected to be in the range of 15-20 mm, so that the tweeter with the inverted concave diaphragm 21C can generate high tones of high frequencies of 2560Hz or more, and even the tweeter with the inverted concave diaphragm 21C can generate high tones of high frequencies of 40kHz or more. As explained in the background section of this patent application, those skilled in the art will recognize that the tweeter of the prior art can produce high pitch sound only by providing the diaphragm with a convex structure in the middle, and the high frequency of the high pitch loudspeaker of the prior art is commonly around 20kHz-2560Hz, in the tweeter of the present invention, the inverted concave diaphragm 21C has an inwardly concave shape, and because the arcuate height and the arcuate curvature of the inverted concave diaphragm 21C are selected, the tweeter is capable of generating high-quality high-frequency treble with a high frequency above 2560Hz, and even ultra-high-frequency treble with a high frequency above 40kHz, which overcomes the technical prejudice of the skilled person, and the tweeter of the present invention has the unexpected technical effect of the tweeter of the prior art.
In addition, the inverted concave diaphragm 21C of the tweeter of the present invention is concave, so that the high pitch generated by the tweeter can be converged, and compared with the tweeter of the prior art which adopts a diaphragm with a convex structure, the high pitch generated by the tweeter of the present invention can be converged due to the structure of the inverted concave diaphragm 21C, so that the high pitch of the tweeter can be more concentrated, thereby expanding the application range of the tweeter. For example, the tweeter of the present invention is suitable for application to a head-mounted sound effect device such as an earphone.
More specifically, with reference to fig. 27 and 28, the inverted-concave diaphragm 21C has a mounting portion 211C, a vibration main body 212C, and a connection limiting portion 213C, wherein the connection limiting portion 213C is circularly surrounded around the vibration main body 212C, and the mounting portion 211C is circularly surrounded around the connection limiting portion 213C. The vibration main body 212C is formed by being depressed downward from the connection stopper 213C in an arc. The panel 11C of the speaker housing 10C has a bearing surface 115C, and the mounting portion 211C of the inverted-concave diaphragm 21C is disposed on the bearing surface 115C of the panel 11C. In other words, the connection limiting portion 213C of the inverted concave diaphragm 21C integrally extends from the vibration main body 212C to the mounting portion 211C, the mounting portion 211C integrally extends from the connection limiting portion 213C, and the mounting portion 211C can extend to the bearing surface 115C of the panel 11C. Further, the seating portion 211C of the inverted concave diaphragm 21C is fixedly connected to the bearing surface 115C, so that the inverted concave diaphragm 21C is stably fixed to the bearing surface 115C, and it is avoided that when the voice coil 30C drives the inverted concave diaphragm 21C of the vibration unit 20C to vibrate, the seating portion 211C of the inverted concave diaphragm 21C is separated from the bearing surface 115C of the panel 11C, and thus the inverted concave diaphragm 21C is separated from the panel 11C, so as to affect the usage effect of the tweeter.
Further, the seating portion 211C of the inverted concave diaphragm 21C may be attached to the bearing surface 115C of the panel 11C, and the panel 11C may provide an upward supporting force for the seating portion 211C of the inverted concave diaphragm 21C, so that the inverted concave diaphragm 21C may be stably held on the panel 11C. So that the inverted concave diaphragm 21C can be stably disposed on the panel 11C without any other structural support, and the relative position of the inverted concave diaphragm 21C and the panel 11C is prevented from being shifted during the process of placing the inverted concave diaphragm 21C and the panel 11C in the mold and manufacturing the joint member 22C, thereby improving the stability of the tweeter. In this particular embodiment of the present invention, the seating portion 211C of the inverted-concave diaphragm 21C and the bearing surface 115C of the face plate 11C are each implemented as a plane. It should be understood by those skilled in the art that the seating portion 211C of the inverted-concave diaphragm 21C may be implemented as a concave surface, and the bearing surface of the panel 11C corresponding to the seating portion 211C is a convex surface. Or the placing portion 211C of the inverted-concave diaphragm 21C may be implemented as a convex surface, and the bearing surface 115C of the panel 11C corresponding to the placing portion 211C is a concave surface. The specific embodiments of the seating portion 211C and the panel 11C of the inverted concave diaphragm 21C are merely examples, and are not intended to limit the content and scope of the tweeter of the present invention. It should be noted that the specific size of the placement portion 211C of the inverted-concave diaphragm 21C is not limited, and the inverted-concave diaphragm 21C may be partially attached to the bearing surface 115C of the panel 11C or completely attached to the bearing surface 115C of the panel 11C. That is, the engaging element 22C covers at least a part of the surface of the bearing surface 115C of the panel 11C and at least a part of the surface of the seating portion 211C of the inverted concave diaphragm 21C.
Preferably, the center point of the panel 11C and the center point of the inverted concave diaphragm 21C are the same, that is, the center point of the panel 11C and the center point of the inverted concave diaphragm 21C are the same. It is worth mentioning that the panel 11C is a ring-shaped panel, and therefore, in the tweeter of the present invention, the center axis of the tweeter passes through the center point of the panel 11C, while the center axis of the tweeter passes through the center point of the inverted concave diaphragm 21C. It will be understood by those skilled in the art that, when the panel 11C and the inverted-concave diaphragm 21C are placed in a molding die to form the joint element 22C, the molding die is configured to ensure that the centers of the panel 11C and the inverted-concave diaphragm 21C are always in common. Of course, a groove adapted to the seating portion 211C of the inverted concave diaphragm 21C may be formed in the panel 11C, so that the seating portion 211C of the inverted concave diaphragm 21C is attached to the bearing surface 115C of the panel 11C, and the center points of the inverted concave diaphragm 21C and the inverted concave diaphragm 21C are located at the same point.
Further, the joint member 22C is formed at the seating portion 211C of the inverted concave diaphragm 21C and the bearing surface 115C of the panel 11C, and fixes the inverted concave diaphragm 21C to the panel 11C of the speaker housing 10C. Preferably, the engaging element 22C can completely cover the bearing surface 115C of the panel 11C and the upper surface of the seating portion 211C, so that the seating portion 211C is stably coupled to the bearing surface 115C of the panel 11C. It should be understood by those skilled in the art that the engaging element 22C may be implemented to cover the bearing surface 115C of the panel 11C and a part of the upper surface of the seating portion 211C, as long as the inverted concave diaphragm 21C can be fixed to the panel 11C.
It should be noted that the way of stably connecting the inverted concave diaphragm 21C to the panel 11C is not limited, and the inverted concave diaphragm 21C and the panel 11C may be stably connected by gluing, mutually matching locking components, thread components, thermal welding, ultrasonic bonding, and the like. The specific connection manner of the inverted concave diaphragm 21C and the panel 11C is only for example and should not be construed as limiting the content and scope of the tweeter of the present invention.
According to the preferred embodiment of the present invention, referring to fig. 28 and 35, the joint element 22C of the vibration unit 20C includes a joint part 221C, wherein the joint part 221C covers the seating part 211C of the inverted concave diaphragm 21C and the bearing surface 115C of the faceplate 11C. Further, the panel 11C has at least one engaging groove 112C, and the engaging portion 221C of the engaging element 22C is received in the engaging groove 112C, thereby fixing the seating portion 211C of the diaphragm 21C and the bearing surface 115C of the panel 11C together. Preferably, the engaging element 22C may be formed by injection molding of an elastic material, that is, the elastic material covers the seating portion 211C of the inverted concave diaphragm 21C and the bearing surface 115C of the panel 11C while forming the engaging element 22C, thereby fixing the seating portion 211C of the inverted concave diaphragm 21C and the bearing surface 115C of the panel 11C together.
Preferably, referring to fig. 27 and 28, the engaging element 22C further includes a plurality of stopper protrusions 224C, the stopper protrusions 224C extending downward from the engaging portion 221C of the engaging element 22C. Correspondingly, the placing portion 211C has a plurality of limiting holes 2111C, the limiting holes 2111C penetrate through the inverted concave diaphragm 21C1, and the limiting holes 2111C are uniformly distributed in the placing portion 211C. Further, when the joint portion 221C of the joint element 22C is integrally molded, the fluid-like molding material flows into and fills the stopper hole 2111C of the seating portion 211C of the inverted concave diaphragm 21C, so that a plurality of the stopper protrusions 224C integrally extending downward from the engaging part 221C are formed after the molding material is cured, and the stopper projection 224C is held in the stopper hole 2111C of the setting portion 211C of the inverted concave diaphragm 21C, the contact area of the joint element 22C with the inverted concave diaphragm 21C and the panel 11C is increased, so as to fix the inverted concave diaphragm 21C to the face plate 11C more firmly, and to avoid that, when the vibration main body 212C of the inverted concave diaphragm 21C vibrates in the axial direction, the joint element 22C is separated from the inverted concave diaphragm 21C and the panel 11C to affect the stability of the tweeter.
Preferably, referring to fig. 36 to 38 of the specification, the panel 11C further has at least one engaging hole 113C, the engaging holes 113C are evenly distributed and penetrate through the panel 11C, and each of the engaging holes 113C is connected to the engaging groove 112C. The engaging element 22C further includes a limiting portion 222C, the limiting portion 222C integrally extends downward from the outer periphery of the engaging portion 221C, and the limiting portion 222C is held in the engaging hole 113C of the panel 11C, so that the inverted concave diaphragm 21C can be more firmly fixed to the panel 11C, and the stability of the tweeter can be enhanced. Specifically, the inverted concave diaphragm 21C and the panel 11C stably placed on the panel 11C are placed in a molding die, and during the injection molding of the joint element 22C, a fluid molding material flows into and fills the joint hole 113C of the panel 11C, so that after the molding material is cured, the position-limiting portion 222C integrally extending to the joint portion 221C is formed, and the position-limiting portion 222C is held in the joint hole 113C of the panel, so as to more firmly fix the inverted concave diaphragm 21C to the panel 11C.
It is worth mentioning that the shape and size of the engagement hole 113C of the panel 11C are not limited in the tweeter of the present invention, for example, in some examples of the tweeter of the present invention, the engagement hole 113C of the panel 11C is a straight-cylindrical through-hole. In yet other examples of the tweeter of the present invention, the coupling hole 113C of the face plate 11C is a through hole having a reverse tapered shape, that is, the inner diameter of a portion of the coupling hole 113C adjacent to the bearing surface 115C of the face plate 11C is smaller than the inner diameter of a portion of the coupling hole 113C adjacent to the lower surface of the face plate 11C. Of course, in other examples of the tweeter of the present invention, the joint hole 113C of the panel 11C may be a sectional type through hole, for example, the joint hole 113C of the panel 11C is a two-sectional type, wherein the upper section of the joint hole 113C is close to the upper surface of the panel 11C, the lower section of the joint hole 113C is close to the lower surface of the panel 11C, and the inner diameter of the upper section of the joint hole 113C is smaller than the inner diameter of the lower section of the joint hole 113C. It will be understood by those skilled in the art that the engagement hole 113C may also be implemented as a blind hole.
Preferably, referring to fig. 36 to 38 of the specification, the engaging element 22C further includes a retaining portion 223C, and the retaining portion 223C integrally extends from the limiting portion 222C. Correspondingly, the panel 11C has a holding groove 114C, wherein the holding groove 114C of the panel 11C is formed on the lower surface of the panel 11C. In the process of forming the engaging element 22C, the fluid-like molding material enters the holding groove 114C of the panel 11C through the engaging hole 113C of the panel 11C, and the holding portion 223C integrally extending from the stopper portion 222C is formed in the holding groove 114C of the panel 11C, in such a manner that the engaging element 22C can be further prevented from being separated from the inverted concave diaphragm 21C and the panel 11C.
It is worth mentioning that, in the tweeter of the present invention, the engaging element 22C is integrally formed on the panel 11C and the seating portion 211C of the inverted concave diaphragm 21C, the engaging portion 221C of the engaging element 22C is integrally engaged with the receiving surface 115C of the panel 11C and the seating portion 211C of the inverted concave diaphragm 21C in the process of forming the engaging element 22C from the fluid-shaped molding material, and the engaging portion 221C of the engaging element 22C can be formed in the engaging groove 112C, the engaging hole 113C penetrating the panel 11C, and the holding groove 114C in the lower surface of the panel 11C, respectively, by providing the engaging groove 112C, the engaging hole 113C, and the holding groove 114C in the panel 11C, The stopper portion 222C and the holding portion 223C, so that the engaging element 22C can reliably fix the inverted concave diaphragm 21C to the panel 11C, which is unexpected in the tweeter of the related art.
Preferably, referring to fig. 38, in a modified example of the tweeter shown in the drawings, the seating portion 211C of the inverted concave diaphragm 21C has at least one through hole 2112C, and the through hole 2112C penetrates through the seating portion 211C. Preferably, the specific number of the through holes 2112C corresponds to the specific number of the engagement holes 113C of the panel 11C, and the inverted concave diaphragm 21C is placed on the panel 11C in such a manner that the through holes 2112C correspond to the engagement holes 113C of the panel 11C. Further, the fluid-shaped molding material may flow through the through hole 2112C of the seating portion 211C of the inverted concave diaphragm 21C and into and fill the engagement hole 113C of the panel 11C, thereby forming the stopper portion 222C integrally extending to the engagement portion 221C after the molding material is cured, and the stopper portion 222C passes through the through hole 2112C of the seating portion 211C of the inverted concave diaphragm 21C and is held at the engagement hole 113C of the panel 11C to more firmly fix the inverted concave diaphragm 21C to the panel 11C, further preventing the engagement element 22C from being separated from the inverted concave diaphragm 21C and the panel 11C.
Referring to fig. 28 in the specification, the vibration body 212C of the inverted concave diaphragm 21C of the vibration unit 20C is located in the voice coil 30C. In other words, the voice coil 30C may surround at least a portion of the vibration body 212C. In addition, one end of the voice coil 30C is connected to the inverted concave diaphragm 21C of the vibration unit 20C, and the other end of the voice coil 30C is coupled to the magnetic return unit 40C, so that the voice coil 30C moves back and forth under the electromagnetic driving force of the magnetic return unit 40C, thereby moving the vibration main body 212C of the inverted concave diaphragm 21C back and forth along the axial direction thereof to make the tweeter provide high-frequency sound.
It should be mentioned that the connection limiting portion 213C of the inverted concave diaphragm 21C is located between the vibration main body 212C and the mounting portion 211C, and the connection limiting portion 213C of the inverted concave diaphragm 21C is suspended in the space between the voice coil 30C and the mounting surface 115C of the panel 11C, and the connection limiting portion 213C integrally extends to the vibration main body 212C and is integrally connected to the mounting portion 211C. When the vibration main body 212C is driven to vibrate back and forth along the axial direction of the tweeter, the connection limiting portion 213C can limit the movement of the vibration main body 212C of the inverted concave diaphragm 21C to the axial direction thereof, and ensure that the inverted concave diaphragm 21C does not deflect during the back and forth vibration along the axial direction of the tweeter.
Further, referring to fig. 28, the connection limiting portion 213C includes an inner connecting portion 2131C and an outer connecting portion 2132C, and the inner connecting portion 2131C and the outer connecting portion 2132C annularly surround the circumference of the inverted concave diaphragm 21C. And along the direction of the cross section, the inner connecting portion 2131C and the outer connecting portion 2132C are integrally formed and form a plane, corrugated, arched or wave-shaped structure. In this specific embodiment of the present invention, the inner connecting portion 2131C and the outer connecting portion 2132C of the connection limiting portion 213C are integrally connected to form a planar structure, and the connection limiting portion 213C and the placing portion 211C are located on the same plane.
In addition, the inverted concave diaphragm 21C integrally formed by the seating portion 211C, the vibration main body 212C and the connection limiting portion 213C is made of a metal material, such as but not limited to an aluminum material, that is, the inverted concave diaphragm 21C is a metal diaphragm, such as an aluminum film, in such a way that the strength of the inverted concave diaphragm 21C can be enhanced to prevent the inverted concave diaphragm 21C from being deformed during the driving of the inverted concave diaphragm 21C, thereby ensuring the purity of sound.
It should be noted that, the forming manner of the inverted concave diaphragm 21C is not limited in the tweeter of the present invention, for example, in some specific examples of the tweeter, the inverted concave diaphragm 21C may be formed by stamping, that is, firstly, an inverted concave diaphragm template is provided, for example, the inverted concave diaphragm template may be a metal template or an alloy template, and then the middle of the inverted concave diaphragm template is recessed downwards by a stamping process, so that the middle of the inverted concave diaphragm template forms the vibration main body 212C of the inverted concave diaphragm 21C, and the connection limiting portion 213C and the mounting portion 211C are formed on the periphery of the inverted concave diaphragm template, that is, the inverted concave diaphragm 21C is an integrated structure. In other specific examples of the tweeter, the inverted concave diaphragm 21C may be an injection molded part. That is, the fluid metal material or alloy material is added into an inverted concave diaphragm forming mold, and when the fluid metal material or alloy material is solidified in the inverted concave diaphragm forming mold and after a mold drawing process is performed on the inverted concave diaphragm forming mold, the integrated inverted concave diaphragm 21C can be formed.
It is worth mentioning that the tweeter of the present invention does not have the centering pads (pops) of the conventional speaker. It will be understood by those skilled in the art that the combination of the inverted-concave diaphragm 21C and the joint member 22C of the vibration unit 20C and the panel 11C of the present invention can also be applied to other various speakers or sound effect devices, including conventional speakers with elastic waves. In other words, the vibration structure 200C of the present invention can be applied to various speakers or sound effect devices, including conventional speakers having an elastic wave.
Specifically, the tweeter of the present invention has no center support, but does not affect the sound quality, and the vibration main body 212C of the inverted concave diaphragm 21C is displaced back and forth only in the axial direction of the tweeter by the limit action of the connection limit portion 213C of the inverted concave diaphragm 21C, so that the vibration main body 212C of the inverted concave diaphragm 21C is prevented from blowing air to generate sound and also from generating noise. Moreover, since the tweeter is free of a centering chip, the distance of the voice coil 30C from the inner surface of the speaker housing 10C is shortened, so that a more compact structure can be formed. In addition, since the distance between the voice coil 30C and the speaker housing 10C is shortened, the space in which the voice coil 30C is displaced from the axial direction of the tweeter is correspondingly reduced, which more effectively prevents the voice coil 30C from being shaken with a greater amplitude from being displaced from the axial direction of the tweeter. In addition, the tweeter does not need to be provided with a centering chip, thereby contributing to reduction in manufacturing cost and difficulty of the tweeter, and to miniaturization of the tweeter.
Referring to fig. 27 and 28, in the preferred embodiment of the present invention, the magnetic return unit 40C includes a magnetic protective sleeve 41C, a permanent magnet 42C, and at least one magnetizer 43C. The permanent magnet 42C is located below the magnetizer 43C and is placed in the magnetic protecting sleeve 41C, and a magnetic gap 44C is formed between the permanent magnet 42C and the magnetic protecting sleeve 41C. In other words, the permanent magnet 42C and the magnetizer 43C are disposed inside the magnetic protecting sleeve 41C in such a manner that the permanent magnet 42C is located at the lower portion of the magnetizer 43C. One end of the voice coil 30C is connected to the vibration main body 212C of the inverted concave diaphragm 21C of the vibration unit 20C, and the other end of the voice coil 30C is coupled to the magnetic gap 44C of the magneto-rheological unit 40C. The magnetic protective sleeve 41C may have a conventional U-iron structure, and the magnetizer 43C may have a conventional pole piece structure. The magnetic protection sleeve 41C and the magnetic conductor 43C guide the magnetic lines of force of the permanent magnet 42C to the magnetic gap 44C, so that the magnetic return unit 40C can interact with the voice coil 30C disposed in the magnetic gap 44C. That is, the magnetic protective cover 41C, the permanent magnet 42C and the magnetizer 43C together form a magnetic field loop to generate vibration in cooperation with the voice coil 30C. That is, one end portion of the voice coil 30C can be connected to the vibration body 212C of the inverted concave diaphragm 21C, and the other end portion of the voice coil 30C extends to the magnetic gap 44C of the magneto-rheological unit 40C, so that the voice coil 30C and the magneto-rheological unit 40C can magnetically communicate, and thus the magneto-rheological unit 40C can drive the voice coil 30C to run back and forth.
In the preferred embodiment of the present invention, the permanent magnet 42C may be various magnets, or magnetic steels, such as metal-based magnets, ferrosoferrite, rare-earth magnets, etc. In the preferred embodiment of the present invention, the permanent magnet 42C may be a neodymium iron boron magnet. Which provides magnetic energy in the magnetic return unit 40C and forms a magnetic field return path to provide the magnetic gap 44C.
It will be appreciated that the components of the gyromagnetic unit 40C may be formed as a unitary structure by a conventional glue bonding process. Alternatively, the magnetic return unit 40C may be manufactured by an integral injection molding process. More specifically, the magnetic protection sleeve 41C, the permanent magnet 42C and the magnetizer 43C may be formed as an integral structure through injection molding.
In the preferred embodiment of the present invention, referring to fig. 27, the magnetic return unit 40C includes a magnetic return connecting frame 48C disposed between the magnetic protecting sleeve 41C and the panel 11C. That is, the gyromagnetic unit 40C is mounted on the panel 11C of the speaker housing 10C via the gyromagnetic coupling frame 48C, so that the inverted concave diaphragm 21C of the vibration unit 20C and the gyromagnetic unit 40C are integrated into a single structure. Further, the magnetic return link 48C includes a link body 481C, a link flange 482C, and a plurality of positioning grooves 483C, wherein the link body 481C has a ring shape, and the link flange 482C extends and protrudes from an inner side of the ring shape of the link body 481C. The positioning grooves 483C are circumferentially distributed on the connecting frame body 481C. Preferably, the magnetic shield 41C includes a shield groove formed from the outside of the magnetic shield 41C to the inside thereof to form an annular groove, such that when the magnetic return link 48C is connected to the magnetic shield 41C, the link flange 482C will couple with the shield groove. The panel 11C includes a plurality of positioning tongues 111C adapted to be inserted into the corresponding positioning grooves 483C to assemble the panel 11C and the frame 48C together. Of course, it is conceivable that the positioning tongue 111C may be disposed on the magnetic return connecting frame 48C and the positioning groove 483C is formed in the panel 11C, and the panel 11C and the magnetic return connecting frame 48C may each have the positioning tongue 111C and the positioning groove 483C. Referring to fig. 27, the tweeter includes a shock absorbing unit 50C provided to the rear cover 12C of the speaker housing 10C such that the shock absorbing unit 50C serves to support the tweeter and reduce vibration when the tweeter is placed or assembled on a surface. Further, the damping unit 50C is made of an elastic material, so that when the tweeter is supported, the vibration generated when the tweeter is in an operating state is transmitted to the damping unit 50C, and the damping unit 50C releases the vibration, thereby achieving the damping effect.
In this preferred embodiment of the present invention, referring to fig. 27, the tweeter includes a protective cover 60C on the panel 11C of the speaker housing 10C for protecting the inverted concave diaphragm 21C of the vibration unit 20C. It will be appreciated that the shield 60C has a plurality of openings so that the shield 60C does not interfere with the transmission of sound and enhances aesthetic appeal.
With reference to fig. 29 to 34 of the specification, the present invention further provides a method of manufacturing a tweeter speaker, the method comprising the steps of:
(a) holding a placement portion 211C of a reverse concave diaphragm 21C of the vibration unit 20C on an upper portion of a bearing surface 115C of a panel 11C of a speaker housing 10C;
(b) forming a connecting element 22C in a molding die by an injection molding process, and connecting the inverted concave diaphragm 21C and the panel 11C, and forming a vibrating structure 200C;
(c) disposing a voice coil 30C between a gyromagnetic unit 40C and the vibration unit 20C;
(d) combining the vibration unit 20C and the gyromagnetic unit 40C by a gyromagnetic linkage 48C; and
(e) the panel 11C and a rear cover 12C of the speaker housing 10C are combined to make the tweeter.
Specifically, at the stage shown in fig. 29 to 32 of the specification, the drawings to the drawings show the manufacturing process of the vibration structure 200C of the tweeter. Fig. 33-34 further illustrate the manufacturing process of the tweeter. At the stage shown in fig. 29, the annular face plate 11C and the inverted-concave diaphragm 21C are provided, and the mount portion 211C of the inverted-concave diaphragm 21C is attached to the mount surface 115C of the face plate 11C, so that the center of the inverted-concave diaphragm 21C and the center of the face plate 11C are in a same point.
Referring to fig. 30, the face plate 11C and the inverted concave diaphragm 21C are placed in a lower mold 91C of a molding mold 90C in such a manner that the vibration body 212C of the inverted concave diaphragm 21C is held in the middle of the face plate 11C, and then an upper mold 92C of the molding mold 90C is clamped with the lower mold 91C, the molding mold 90C having a molding space 93C, the molding space 93C being formed between the upper mold 92C and the lower mold 91C, the face plate 11C and the inverted concave diaphragm 21C being accommodated in the molding space 93C of the molding mold 90C. Also, in this particular embodiment of the invention, an injection space 300C communicating with the molding space 93C is formed between the upper surface of the seating portion 211C of the inverted concave diaphragm 21C, the bearing surface 115C of the face plate 11C, and the upper mold 92C.
In another embodiment of the method of manufacturing a tweeter speaker according to the present invention, the panel 11C and the inverted concave diaphragm 21C are implemented to be sequentially put into the molding die 90C. Specifically, the panel 11C is placed in the molding die 90C, and then the inverted concave diaphragm 21C is placed in the molding die 90C in such a manner that the placing portion 211C of the inverted concave diaphragm 21C is attached to the bearing surface 115C of the panel 11C. Preferably, the inverted concave diaphragm 21C is placed in the molding die 90C in such a manner that the through hole 2112C of the placement portion 211C corresponds to the engagement hole 113C of the panel 11C. In other embodiments, the panel 11C is first placed in the molding mold 90C, and then the inverted concave diaphragm 21C is placed in the molding mold 90C in such a manner that the placing portion 211C of the inverted concave diaphragm 21C is held on the upper portion of the bearing surface 115C of the panel 11C, so that a gap exists between the placing portion 211C of the inverted concave diaphragm 21C and the bearing surface 115C of the panel 11C, and the gap communicates with the molding space 93C. That is, the seating portion 211C of the inverted-concave diaphragm 21C can be disposed in a suspended manner with respect to the bearing surface 115C of the panel 11C, and the seating portion 211C of the inverted-concave diaphragm 21C is located at an upper portion of the bearing surface 115C of the panel 11C.
Preferably, the injection space 300C may be formed between the upper surface and the lower surface of the seating portion 211C of the inverted concave diaphragm 21C, the bearing surface 115C of the panel 11C, and the upper mold 92C. Preferably, the injection space 300C may be formed between the seating portion 211C of the inverted concave diaphragm 21C, the bearing surface 115C of the panel 11C, the upper mold 92C, and the lower mold 91C.
At the stage shown in fig. 31, a fluid molding material is injected into the molding space 93C of the molding die 90C, so that the molding material fills the entire injection space 300C, and the molding material can cover the panel 11C and the inverted concave diaphragm 21C. Preferably, the molding material may be guided to fill the seating portion 211C formed between the inverted-concave diaphragm 21C, the bearing surface 115C of the panel 11C, and the injection space 300C of the upper mold 92C to wrap the bearing surface 115C of the panel 11C and the seating portion 211C of the inverted-concave diaphragm 21C, and the molding material guided to fill the injection space 300C formed between the upper mold 92C, the lower mold 91C, and the panel 11C may simultaneously fill a coupling hole 113C of the panel 11C. It is to be noted that the type of the molding material is not limited in the tweeter of the present invention, as long as the joining member 22C can be formed by curing molding and the inverted concave diaphragm 21C can be fixed to the panel 11C. For example, the molding material may be, but is not limited to, a fluid rubber. It should also be noted that the curing manner of the molding material is not limited in the tweeter of the present invention, and the molding material may be cured by any feasible manner, such as heating or cooling.
At the stage shown in fig. 32, after the molding material is solidified in the molding space 93C, a die-drawing operation is performed on the lower die 91C and the upper die 92C of the molding die 90C to obtain the integrated vibrating structure 200C. It should be noted that the specific example in which the engaging portion 221C of the engaging element 22C shown in fig. 17 is covered on the mounting portion 211C of the inverted concave diaphragm 21C and the bearing surface 115C of the panel 11C, a limiting portion 222C of the engaging element 22C is held in the engaging hole 113C of the panel 11C, and a holding portion 223C of the engaging element 22C is held in a holding groove 114C of the panel 11C is merely an example, and cannot limit the content and scope of the tweeter of the present invention.
In other embodiments of the present invention, the molding material can be guided through a limiting hole 2111C of the inverted concave diaphragm 21C1 and fill the injection space 300C, so as to form a limiting protrusion 224C of the joint element 22C after the molding material is solidified, and to firmly connect the inverted concave diaphragm 21C to the panel 11C.
In another embodiment of the present invention, the molding material may be guided through a through hole 2112C of the seating portion 211C of the inverted-concave diaphragm 21C and fill the injection space 300C, and the stopper portion 222C of the coupling element 22C formed after the molding material is cured is held in the coupling hole 113C of the panel 11C and the through hole 2112C of the seating portion 211C of the inverted-concave diaphragm 21C and may firmly couple the inverted-concave diaphragm 21C to the panel 11C.
At the stage shown in fig. 33, one end of the voice coil 30C may be provided on the lower surface of the vibration body 212C of the inverted concave diaphragm 21C. It should be noted that the manner in which the voice coil 30C is provided on the lower surface of the vibration main body 212C of the inverted concave diaphragm 21C is not limited in the tweeter of the present invention.
At the stage shown in fig. 34, the gyromagnetic unit 40C is provided.
Further, the back cover 12C is mounted to the magnet return unit 40C, the magnet return attachment frame 48C and the face plate 11C are bonded together, and then, the face plate 11C and the back cover 12C are bonded together, so that the magnet return unit 40C is held between the face plate 11C and the back cover 12C by the magnet return attachment frame 48C. The face plate 11C is coupled with the magnet yoke 48C in such a manner that each of the positioning tongues 111C of the face plate 11C is inserted into and held in each of the positioning grooves 483C of the magnet yoke 48C, respectively. In addition, the positioning tongue 111C and the inner wall of the magnetic return connecting frame 48C for forming the positioning groove 483C may be adhered to each other by glue. It is worth mentioning that the combination manner of the panel 11C and the back cover 12C is not limited in the tweeter of the present invention, for example, the combination manner of the panel 11C and the back cover 12C may be a locking assembly, a screw assembly, a thermal fusion bonding, an ultrasonic bonding, or the like. Further, the shock absorbing unit 50C is mounted to the rear cover 12C of the speaker housing 10C, so that when the tweeter is mounted to or disposed on or placed on a surface of an object, the shock absorbing unit 50C can reduce vibration of the tweeter in such a manner as to be held between the rear cover 12C and the surface of the object, thereby further improving a vibration effect of the tweeter.
Further, the protective cover 60C is attached to the panel 11C of the speaker housing 10C, and the protective cover 60C is held in the sound wave emitting direction of the vibration unit 20C, so that the vibration unit 20C is protected and the aesthetic appearance of the tweeter is enhanced.
It is worth mentioning that in this particular embodiment the tweeter is realized as a structure without a dangling edge, thereby simplifying the manufacturing process.
It will be appreciated by persons skilled in the art that the above embodiments are only examples, wherein features of different embodiments may be combined with each other to obtain embodiments which are easily conceivable in accordance with the disclosure of the invention, but which are not explicitly indicated in the drawings.

Claims (43)

1. A tweeter, comprising:
a magnetic return unit;
a voice coil;
a speaker housing, wherein the speaker housing includes a panel; and
a vibration unit, wherein the vibration unit comprises an inverted concave diaphragm, wherein the inverted concave diaphragm extends to an upper portion of the panel of the speaker housing, wherein one end portion of the voice coil is disposed on the inverted concave diaphragm, and the other end portion of the voice coil is coupled to the magneto-rheological unit; wherein the vibration unit further comprises an elastic hanging edge, wherein the inverted concave membrane is provided with an upper plane and a lower concave arc surface, the upper plane surrounds the lower concave arc surface, and the elastic hanging edge is integrally connected with the upper plane of the inverted concave membrane and the panel, so that the inverted concave membrane, the elastic hanging edge and the panel are integrated;
the range of the arc height parameter of the inverted concave diaphragm is 5mm-7mm, and the range of the arc radian parameter of the inverted concave diaphragm is 15mm-20 mm.
2. The tweeter of claim 1 wherein the vibration unit further comprises an engagement element disposed between the inverted concave diaphragm and the panel and securing the inverted concave diaphragm to the panel.
3. The tweeter of claim 2, wherein the inverted concave diaphragm includes a seating portion, a connection stopper portion integrally extended from the seating portion and connected with the vibration body, the seating portion of the inverted concave diaphragm being held at an upper portion of the panel, and the vibration body being disposed at the voice coil.
4. The tweeter of claim 3 wherein the connection-limiting portion of the inverted-concave diaphragm is held in suspension between the voice coil and the panel.
5. The tweeter of claim 4, wherein the face plate of the speaker housing has a bearing surface, the seating portion of the inverted concave diaphragm is held at an upper portion of the bearing surface, and the engaging elements are formed at the bearing surface and the seating portion of the face plate.
6. The tweeter of claim 5 wherein the seating portion of the inverted concave diaphragm conforms to the bearing surface of the panel.
7. The tweeter of claim 5, wherein the seating portion of the inverted concave diaphragm is held in suspension on an upper portion of the bearing surface of the panel.
8. The tweeter of claim 6 wherein the panel has an engagement slot, wherein the engagement element is received in the engagement slot.
9. The tweeter of claim 7 wherein the panel has an engagement slot, wherein the engagement element is received in the engagement slot.
10. The tweeter of claim 8, wherein the coupling element includes a coupling portion and a plurality of limiting protrusions integrally extending downward from the coupling portion, the coupling portion of the coupling element being formed at the seating portion of the inverted concave diaphragm of the panel and the bearing surface of the panel, wherein the seating portion of the inverted concave diaphragm has a plurality of limiting holes penetrating the inverted concave diaphragm, the limiting protrusions being formed at the limiting holes.
11. The tweeter of claim 9, wherein the coupling element includes a coupling portion and a plurality of limiting protrusions integrally extending downward from the coupling portion, the coupling portion of the coupling element being formed at the seating portion of the inverted concave diaphragm of the panel and the bearing surface of the panel, wherein the seating portion of the inverted concave diaphragm has a plurality of limiting holes penetrating the inverted concave diaphragm, the limiting protrusions being formed at the limiting holes.
12. The tweeter of claim 10 wherein the panel has at least one engagement hole, each of which communicates with the engagement groove, respectively, wherein the engagement element includes at least one stopper portion integrally extending downward from the engagement portion, and the stopper portion is held in the engagement hole of the panel.
13. The tweeter of claim 11 wherein the panel has at least one engagement hole, each of which communicates with the engagement groove, respectively, wherein the engagement element includes at least one stopper portion integrally extending downward from the engagement portion and held in the engagement hole of the panel.
14. The tweeter of claim 8 wherein the panel has at least one engagement hole, each of which communicates with the engagement groove, wherein the engagement element includes an engagement portion and at least one stopper portion, the stopper portion integrally extending downward from the engagement portion, and the stopper portion being held in the engagement hole of the panel.
15. The tweeter of claim 9 wherein the panel has at least one engagement hole, each of which communicates with the engagement groove, wherein the engagement element includes an engagement portion and at least one stopper portion, the stopper portion integrally extending downward from the engagement portion, and the stopper portion being held in the engagement hole of the panel.
16. The tweeter of claim 12 wherein the panel has a retaining groove formed in a lower surface thereof and communicating with at least one of the engagement holes, the engagement element includes a retaining portion integrally extended from the stopper portion, and the retaining portion of the engagement element is formed in the retaining groove.
17. The tweeter of claim 13 wherein the panel has a retaining groove formed in a lower surface thereof and communicating with at least one of the engagement holes, the engagement element includes a retaining portion integrally extended from the stopper portion, and the retaining portion of the engagement element is formed in the retaining groove.
18. The tweeter of claim 14 wherein the panel has a retaining groove formed in a lower surface thereof and communicating with at least one of the engagement holes, the engagement element includes a retaining portion integrally extended from the stopper portion, and the retaining portion of the engagement element is formed in the retaining groove.
19. The tweeter of claim 15 wherein the panel has a retaining groove formed in a lower surface thereof and communicating with at least one of the engagement holes, the engagement element includes a retaining portion integrally extended from the stopper portion, and the retaining portion of the engagement element is formed in the retaining groove.
20. The tweeter of any of claims 16 to 19, wherein the mounting portion of the inverted-concave diaphragm has at least one through hole, the through hole penetrating the inverted-concave diaphragm and corresponding to the engagement hole, and the stopper hole communicating with the engagement hole, the stopper portion being held in the engagement hole of the panel and the through hole of the mounting portion of the inverted-concave diaphragm.
21. The tweeter of any one of claims 3 to 19, wherein the connection limiting portion of the inverted concave diaphragm comprises an inner connecting portion and an outer connecting portion, the inner connecting portion and the outer connecting portion being integrally formed and forming a planar or corrugated or arch or wave structure.
22. The tweeter of claim 20 wherein the connection-limiting portion of the inverted-concave diaphragm comprises an inner connection portion and an outer connection portion, the inner connection portion and the outer connection portion being integrally formed and forming a planar or corrugated or arch or wave structure.
23. The tweeter of claim 21 wherein the inverted concave diaphragm is a metal diaphragm or an alloy diaphragm, wherein the tweeter has a diameter in the range of 8mm to 38 mm.
24. The tweeter of claim 22 wherein the inverted-concave diaphragm is a metal diaphragm or an alloy diaphragm.
25. The tweeter of claim 23 wherein the speaker housing further comprises a back cover, wherein the back cover is disposed to the panel, and the magnetic return unit and the voice coil are held in a space formed between the panel and the back cover.
26. The tweeter of claim 24 wherein the speaker housing further comprises a back cover, wherein the back cover is disposed to the panel, and the magnetic return unit and the voice coil are held in a space formed between the panel and the back cover.
27. The tweeter of claim 1 wherein the resilient suspension connects the inverted concave diaphragm and the panel; the elastic suspension edge comprises a suspension edge main body and a plurality of elastic ribs which are arranged at intervals along the annular direction, and each elastic rib integrally extends to the suspension edge main body in a protruding or recessed mode.
28. The tweeter of claim 1, wherein the inverted-concave diaphragm has an arc-shaped height parameter ranging from 5mm to 7mm and an arc-shaped radian parameter ranging from 15mm to 20 mm.
29. A method of manufacturing a vibrating structure for a tweeter speaker, the method comprising the steps of:
(a) keeping an installation part of an inverted concave diaphragm of a vibration unit on the upper part of a bearing surface of a panel of a loudspeaker shell, wherein the range of the arc-shaped height parameter of the inverted concave diaphragm is 5mm-7mm, and the range of the arc-shaped radian parameter of the inverted concave diaphragm is 15mm-20 mm; and
(b) and forming a joint element on the placing part of the undercut vibrating diaphragm and the bearing surface of the panel in a molding die by an injection molding process, and joining the undercut vibrating diaphragm and the panel to obtain the integrated vibrating structure, wherein the joint element covers the placing part of the undercut vibrating diaphragm and the bearing surface of the panel to form a plane.
30. The method of manufacturing of claim 29, wherein in step (a), further comprising the step of: the mounting portion of the inverted concave diaphragm attached to the vibration unit is positioned on the bearing surface of the panel of the speaker housing.
31. The method of manufacturing of claim 29, wherein in step (a), further comprising the step of: the seating portion of the inverted concave diaphragm of the vibration unit is provided in a suspended manner at an upper portion of the bearing portion of the panel of the speaker housing.
32. The method of manufacturing of claim 29, wherein prior to step (a), further comprising the step of: and sequentially placing the panel of the loudspeaker shell and the inverted concave vibrating diaphragm of the vibrating unit in a forming space of the forming die.
33. The method of manufacturing of claim 30, wherein prior to step (a), further comprising the step of: and sequentially placing the panel of the loudspeaker shell and the inverted concave vibrating diaphragm of the vibrating unit in a forming space of the forming die.
34. The method of manufacturing of claim 31, wherein prior to step (a), further comprising the step of: and sequentially placing the panel of the loudspeaker shell and the inverted concave vibrating diaphragm of the vibrating unit in a forming space of the forming die.
35. The method of manufacturing of claim 29, wherein step (a) is followed by the steps of: and simultaneously placing the panel and the inverted concave diaphragm arranged on the panel into a forming space of the forming die.
36. The method of manufacturing of claim 30, wherein step (a) is followed by the steps of: and simultaneously placing the panel and the inverted concave diaphragm arranged on the panel into a forming space of the forming die.
37. The manufacturing method according to any one of claims 29 to 36, wherein in the step (b), further comprising the step of:
guiding a fluid-shaped molding material to cover at least a part of the surface of the panel and at least a part of the surface of the mounting part of the inverted concave diaphragm; and
and curing the molding material to form a joint part of the joint element.
38. The manufacturing method according to any one of claims 29 to 36, wherein in the step (b), further comprising the step of:
at least one joint hole for guiding a fluid-shaped molding material to cover at least one part of the surface of the panel and at least one part of the surface of the placing part of the inverted concave diaphragm and fill the panel; and
and solidifying the molding material to form a joint part and a limiting part of the joint element.
39. The manufacturing method according to any one of claims 29 to 36, wherein in the step (b), further comprising the step of:
guiding a fluid-shaped molding material to cover at least one part of the surface of the panel and at least one part of the surface of the placing part of the inverted concave diaphragm, guiding the molding material to pass through a through hole of the inverted concave diaphragm, and filling at least one joint hole of the panel; and
and solidifying the molding material to form a joint part and a limiting part of the joint element.
40. The method of manufacturing of claim 37, wherein in step (b), further comprising the step of:
guiding a fluid-shaped molding material to fill at least one limiting hole of the placement part of the inverted concave diaphragm; and
and solidifying the molding material to form a limiting bulge of the joint element.
41. The method of manufacturing of claim 38, wherein in step (b), further comprising the steps of:
guiding a fluid-shaped molding material to fill at least one limiting hole of the placement part of the inverted concave diaphragm; and
and solidifying the molding material to form a limiting bulge of the joint element.
42. The method of manufacturing of claim 39, wherein in step (b), further comprising the steps of:
guiding a fluid-shaped molding material to fill at least one limiting hole of the placement part of the inverted concave diaphragm; and
and solidifying the molding material to form a limiting bulge of the joint element.
43. A method of manufacturing a tweeter speaker, comprising the steps of:
(a) keeping an installation part of an inverted concave diaphragm of a vibration unit on the upper part of a bearing surface of a panel of a loudspeaker shell, wherein the range of the arc-shaped height parameter of the inverted concave diaphragm is 5mm-7mm, and the range of the arc-shaped radian parameter of the inverted concave diaphragm is 15mm-20 mm;
(b) forming a joint element in a molding die through an injection molding process and joining the inverted concave diaphragm and the panel, wherein the joint element covers a bearing surface of the panel and a mounting portion of the inverted concave diaphragm, so that the joint element and the bearing surface of the panel and the mounting portion of the inverted concave diaphragm are in the same plane;
(c) arranging a voice coil between a magnetic return unit and the vibration unit;
(d) the vibration unit and the magnetic return unit are jointed through a magnetic return connecting frame; and
(e) and combining the panel of the loudspeaker shell with a rear cover to obtain the high pitch loudspeaker.
CN201810631274.9A 2018-06-19 2018-06-19 High pitch loudspeaker and manufacturing method thereof Active CN110620974B (en)

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Denomination of invention: High pitched speaker and its manufacturing method

Effective date of registration: 20230818

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Pledgee: Ningbo Zhenhai Rural Commercial Bank Co.,Ltd.

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