CN110677785A - Loudspeaker cone, manufacturing method thereof and loudspeaker - Google Patents
Loudspeaker cone, manufacturing method thereof and loudspeaker Download PDFInfo
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- CN110677785A CN110677785A CN201910894220.6A CN201910894220A CN110677785A CN 110677785 A CN110677785 A CN 110677785A CN 201910894220 A CN201910894220 A CN 201910894220A CN 110677785 A CN110677785 A CN 110677785A
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- cone
- rigidity
- loudspeaker
- initial
- adjusting substance
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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
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/12—Non-planar diaphragms or cones
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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
Abstract
The invention provides a loudspeaker cone, a preparation method thereof and a loudspeaker. The preparation method comprises the following steps: performing a pulping process to obtain pulp; executing a slurry fishing process to obtain an initial cone; baking and curing the initial cone to obtain the loudspeaker cone; wherein, a rigidity adjusting substance is added in the process of preparing the loudspeaker cone, and the rigidity adjusting substance comprises at least one of magnesium-lithium alloy and silicon carbide. After the rigidity regulating substance is doped, the Young modulus of the paper pulp is enhanced, and the existing high internal resistance of the paper pulp can effectively solve the problem of sound dyeing, so that the sound can be heard more clearly and naturally, and the high frequency is widened.
Description
Technical Field
The invention relates to the technical field of sound equipment, in particular to a loudspeaker cone, a manufacturing method of the loudspeaker cone and a loudspeaker.
Background
A loudspeaker is a transducer device that converts an electrical signal into an acoustic signal. When different electronic energy is transmitted to the voice coil, the voice coil generates magnetic field interaction between the energy and the magnet, the interaction causes vibration of the cone, the electronic energy changes at any time, the loudspeaker moves forwards or backwards, and therefore the cone of the loudspeaker moves along with the movement, and the density degree of air is changed by the actions to generate sound.
As a sound production structure, a speaker is widely used in a mobile phone, a television, a sound box, or other structures, however, as the living standard of people increases, the functional quality of the speaker is more and more required.
The conventional loudspeaker is characterized in that a cone generally adopts paper as the cone, the inherent characteristics and the defects of the loudspeaker are correspondingly brought by the characteristics and the defects of the paper, for example, the paper has the advantages of large internal damping and small density, but has the defect of small elastic modulus, the cone is subjected to sound dyeing when vibrating, the sound is turbid in a specific frequency band, the tone quality is reduced, and meanwhile, the expansion of high frequency is severely limited.
Therefore, how to solve the above problems becomes a key to improve the performance of the speaker.
Disclosure of Invention
Aiming at the problems that sound is turbid in a specific frequency band due to sound dyeing in the prior art, the tone quality is reduced, and meanwhile, the expansion of high frequency is severely limited, the invention provides a preparation method of a loudspeaker cone on one hand, which comprises the following steps:
performing a pulping process to obtain pulp;
executing a slurry fishing process to obtain an initial cone;
baking and curing the initial cone to obtain the loudspeaker cone;
wherein, a rigidity adjusting substance is added in the process of preparing the loudspeaker cone, and the rigidity adjusting substance comprises at least one of magnesium-lithium alloy and silicon carbide.
Optionally, the mass ratio of the added magnesium-lithium alloy to the pulp is 10% -15%, or the mass ratio of the added silicon carbide to the pulp is 10% -30%.
Optionally, the rigidity adjusting substance is the silicon carbide, and the method for adding the rigidity adjusting substance in the process of preparing the loudspeaker cone comprises the following steps:
in the beating process, the rigidity-adjusting substance is added to the pulp to obtain pulp containing the rigidity-adjusting substance.
Optionally, the rigidity adjusting substance is the magnesium-lithium alloy, and the method for adding the rigidity adjusting substance in the process of preparing the loudspeaker cone comprises the following steps:
coating the rigidity adjusting substance on the outer surface of the initial cone;
extruding the initial cone coated with the rigidity adjusting substance; or
Executing a slurry fishing process to respectively obtain a first initial cone and a second initial cone, wherein the inner diameter of the second initial cone is larger than that of the first initial cone;
coating the outer surface of the first initial cone with the rigidity adjusting substance;
and putting the first initial cone into the second initial cone to compound the first initial sound and the second initial cone into a whole.
Optionally, the preparation method further comprises an edge cutting process and an inspection process.
A second aspect of the invention provides a loudspeaker cone, the loudspeaker cone comprising:
the sound cone comprises a sound cone body and a rigid adjusting substance, wherein the sound cone body is used for making sound through vibration of the sound cone body, and the rigid adjusting substance comprises at least one of magnesium-lithium alloy and silicon carbide.
Optionally, the rigidity adjusting substance is uniformly doped in the cone body.
Optionally, the rigidity-adjusting substance is fixed on the outer surface of the cone main body in a coating manner.
Optionally, the cone body includes a first cone body and a second cone body integrated with each other, wherein a layer of the rigidity-adjusting substance is disposed between the first cone body and the second cone body.
A third aspect of the invention provides a loudspeaker comprising a loudspeaker cone as described above.
After the rigidity adjusting substance is added into the loudspeaker cone, the loudspeaker cone has good Young modulus and smaller density, the density of the rigidity adjusting substance mixed into the paper pulp can be adjusted according to the performance requirement, so that the purposes of higher Young modulus and lighter density are achieved, and the rigidity adjusting substance comprises at least one of magnesium-lithium alloy and silicon carbide. After the rigidity regulating substance is doped, the Young modulus of the paper pulp is enhanced, and the existing high internal resistance of the paper pulp can effectively solve the problem of sound dyeing, so that the sound can be heard more clearly and naturally, and the high frequency is widened. By adding the rigidity regulating substance, the price of the loudspeaker cone can be reduced, and the advantages of high internal resistance and low density of paper pulp are combined.
The loudspeaker comprising the loudspeaker cone also has the advantages, the problem of sound dyeing can be effectively solved, sound can be heard more clearly and naturally, and high frequency is widened.
Drawings
The following drawings of the invention are included to provide a further understanding of the invention. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.
In the drawings:
fig. 1 shows a schematic flow chart of the speaker cone manufacturing method in an embodiment of the present invention;
fig. 2 shows a schematic block diagram of the loudspeaker cone manufacturing method in an embodiment of the invention;
FIG. 3 is a schematic block diagram of the speaker cone manufacturing method in another embodiment of the present invention;
FIG. 4 shows a schematic block diagram of the loudspeaker cone manufacturing method in a further embodiment of the invention;
fig. 5 shows a schematic block diagram of the loudspeaker cone manufacturing method in a further embodiment of the present invention.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the invention.
It is to be understood that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity. Like reference numerals refer to like elements throughout.
It will be understood that when an element or layer is referred to as being "on," "adjacent to," "connected to," or "coupled to" other elements or layers, it can be directly on, adjacent to, connected or coupled to the other elements or layers or intervening elements or layers may be present. In contrast, when an element is referred to as being "directly on," "directly adjacent to," "directly connected to" or "directly coupled to" other elements or layers, there are no intervening elements or layers present. It will be understood that, although the terms first, second, third, etc. may be used to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the present invention.
Spatial relational terms such as "under," "below," "under," "above," "over," and the like may be used herein for convenience in describing the relationship of one element or feature to another element or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, then elements or features described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary terms "under" and "under" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatial descriptors used herein interpreted accordingly.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term "and/or" includes any and all combinations of the associated listed items.
In order to provide a thorough understanding of the present invention, a detailed structure will be set forth in the following description in order to explain the present invention. The following detailed description of the preferred embodiments of the invention, however, the invention is capable of other embodiments in addition to those detailed.
As described above, the conventional speaker cone generally uses paper as the cone, and the sound is turbid in a specific frequency band, the sound quality is reduced, and the expansion of high frequency is severely limited. In order to solve the problems, fibers, wool and the like are often added into pulp or titanium metal is used, but the improvement of the elastic modulus is not obvious, the problem of acoustic dyeing is still serious, and the high frequency expansion is not enough.
In order to solve the technical problems existing at present, the invention provides a preparation method of a loudspeaker cone, which comprises the following steps:
performing a pulping process to obtain pulp;
executing a slurry fishing process to obtain an initial cone;
baking and curing the initial cone to obtain a loudspeaker cone;
wherein, the rigidity regulating substance is added in the process of preparing the loudspeaker cone.
After the rigidity regulating substance is added into the loudspeaker cone, the loudspeaker cone has good Young modulus and smaller density, and the density of the rigidity regulating substance mixed into the paper pulp can be adjusted according to the performance requirement, so that the aims of higher Young modulus and lighter density are fulfilled. After the rigidity regulating substance is doped, the Young modulus of the paper pulp is enhanced, and the existing high internal resistance of the paper pulp can effectively solve the problem of sound dyeing, so that the sound can be heard more clearly and naturally, and the high frequency is widened. The rigidity regulating substance is added, so that the price of the loudspeaker cone can be reduced, and the advantages of high internal resistance and low density of paper pulp are combined.
Example one
The method for manufacturing a speaker cone according to the present invention is explained and explained with reference to fig. 1 to 5, wherein fig. 1 shows a schematic flow chart of the method for manufacturing a speaker cone according to an embodiment of the present invention; FIG. 2 shows a schematic block diagram of a speaker cone manufacturing method in an embodiment of the invention; FIG. 3 shows a schematic block diagram of a speaker cone manufacturing method in another embodiment of the invention; FIG. 4 shows a schematic block diagram of a speaker cone manufacturing method in a further embodiment of the invention; fig. 5 shows a schematic block diagram of a method of manufacturing a loudspeaker cone in a further embodiment of the invention.
In one embodiment of the present invention, step S1 is first performed: a beating process is performed to obtain pulp.
In this step, the mechanical action gives the stock some specific properties, which ensure that the desired quality is achieved after the paper or board has been formed. In the papermaking process, certain additives (such as sizing materials, aluminum sulfate, fillers, pigments and the like) are often required to be added into paper pulp so as to improve the quality of finished paper; these additives are often added during the pulping process to achieve uniform mixing with the pulp.
The fibers are not chemically changed during the beating process. Regardless of the type of beating equipment used, the primary functions are to produce chopping, crushing, swelling and fibrillation, which are changes in the cell walls of the fibers.
Specifically, in an embodiment of the present invention, the pulping specifically may include the following steps:
(1) the pulp board is firstly put into a soaking pool to be soaked for more than 4 hours, and is preferably soaked by hot water.
(2) The fly cutter is lifted to a untwining cutter position (an empty cutter position), and clear water is injected into the slurry machine to a position of two thirds.
(3) The beater is started to let the water start to rotate.
(4) And tearing the soaked pulp board into a pulping machine, and defibering for ten minutes.
(5) And (5) putting the fly cutter at the position of the middle cutter, and pulping for a period of time.
(6) The fly cutter is put down to the position of the heavy cutter, and the beating is carried out until the beating degree is qualified
Specifically, the weight of the pulp sheet is weighed before soaking, and the pulp sheet should be soaked with hot water first, because the hot water has stronger molecular activity and is easier to cause the fiber to generate swelling action. The soaked fiber is fully swelled, so that the fiber can be easily dispersed into single fiber, namely the fiber is easier to untwist. In addition, the specific surface area is increased, so that fibers are easier to divide and brook, and good conditions are created for beating long fibers in a sticky state required by loudspeaker drum paper.
Alternatively, the fly cutter must be lifted to the idle cutter freeing position before adding water to the vat, and then the motor is started. The pulp sheet does not tear too much, which facilitates faster defibering. Generally, the knife can be started after ten minutes of untwining. The bottom knife is the most critical stage in the pulping process, which is the stage that most directly affects the performance of the cone and trumpet. Generally speaking, for developing different paper basins, different cutting processes are needed according to the different performances and curves of the trumpet, and sometimes, the cutter position can be tested by continuously beating a plurality of grooves with pulp.
The beating time is also very critical, the effect of the middle knife on the paper pulp is mainly friction, the cutting is less, and the beating degree is improved slowly. And heavy sword is because the knife position is heavier, and the beating specific pressure is big, and the fibre that cuts off can be more, but the beating degree improves more than fast. According to different requirements of the performance of the horn, different cutting time of the middle cutter and the heavy cutter is required.
In the embodiment of the invention, mechanical beating can be carried out firstly, and then ultrasonic beating can be carried out, wherein the specific steps and parameters of the ultrasonic beating can be selected from the steps and parameters in the process commonly used in the field.
Then, step S2 is executed to perform a slurry fishing process to obtain an initial cone.
In the step, according to different product types, the wood pulp type used by the product is firstly confirmed, a proper amount of pulp is extracted and poured into a pulp mixing tank, clear water is added for dilution, and a bubble turning pipe is opened or a stirrer is started for stirring.
In the process of fishing the pulp, firstly, the cleaned copper wire cloth is flatly placed on a dewatering mould, a pulp fishing hopper is positioned and buckled, and technological parameters such as water feeding time, pulp feeding time, mixing time and the like are set according to the requirements of a paper basin process card. So that the paper pulp fibers are uniformly deposited on the copper wire mesh and are formed by pumping.
And then lifting the pulp fishing hopper, taking out the formed blank cone, and visually measuring the transparency under the light to remove the cone with the phenomena of single side, pulp leakage, water marks, pulp blocking, uneven edge and the like.
And then putting the copper wire mesh adsorbed with the blank cone into a turnover type secondary slurry precipitating machine die, removing the copper wire mesh, adsorbing the blank cone on the copper wire mesh of the slurry precipitating machine die, and enabling the slurry to be uniformly adsorbed for secondary slurry fishing and forming.
Then, step S3 is executed: and baking and curing the initial cone to obtain the loudspeaker cone.
Specifically, in this step, the initial cone formed by scooping slurry is placed into a drying device for drying and curing, for example, the drying temperature in this step may be 80-150 ℃, and may be adjusted according to actual needs.
In the drying solidification, on one hand, moisture in the initial sound cone is removed to dry the initial sound cone, and simultaneously, the hardness of the initial sound cone can be increased to increase the rigidity of the loudspeaker sound cone.
In an embodiment of the present invention, in addition to the above steps, a step of adding a rigidity adjusting substance to the speaker cone is further included to increase the rigidity of the speaker cone.
The rigidity adjusting substance is not selected arbitrarily, and the rigidity adjusting substance is required to have higher rigidity than the paper cone and relatively lower density, so that the loudspeaker cone added with the rigidity adjusting substance achieves the purposes of higher Young modulus and lighter density. The problem that the Young modulus of the cone speaker is insufficient is effectively solved, so that the tone quality of the speaker is improved, and the speaker can sound more self-heating and clear; meanwhile, the high-frequency range is widened, and the sound performance is more full and real.
In an embodiment of the present invention, the rigidity adjusting substance includes at least one of magnesium-lithium alloy and silicon carbide;
optionally, the rigidity of the Mg-Li alloy is about 18 times of that of the Mg-Al alloy, the density is 1.3 g/cubic centimeter, about 50% of that of the aluminum, and about 1.6 times of that of the pulp, the Mg-Li alloy has good Young modulus and smaller density, and the density of the blended pulp can be adjusted according to the requirement of the performance, so as to achieve the purposes of higher Young modulus and lighter density.
After the magnesium-lithium alloy powder is doped, the Young modulus of the paper pulp is enhanced, and the existing high internal resistance of the paper pulp can effectively solve the problem of acoustic dyeing, so that the sound can be heard more clearly and naturally, and the high frequency is widened. The doping mass of the magnesium-lithium alloy powder is 10-15% of the mass of the paper pulp.
Optionally, the rigidity of the silicon carbide is approximately 4 times that of titanium metal, the rigidity of the silicon carbide is approximately 150 times that of the cone, the density of the silicon carbide is 3.1 g/cubic centimeter, the density of the silicon carbide is approximately 69% of that of titanium, the density of the silicon carbide is approximately 4 times that of the cone, the silicon carbide has good Young modulus and smaller density, and the density of the doped pulp can be adjusted according to the requirements of performance so as to achieve the purposes of higher Young modulus and lighter density. After the silicon carbide is doped, the Young modulus of the paper pulp is enhanced, and the existing high internal resistance of the paper pulp can effectively solve the problem of acoustic dyeing, so that the sound can be heard more clearly and naturally, and the high frequency is widened. The doped mass of the silicon carbide is 10-30% of the mass of the pulp.
After the finishing step, the method further includes an edge trimming process and an inspection process. The trimming process and the inspection process may adopt conventional steps in the art, and are not described herein again.
The step of adding the rigidity-adjusting substance may be in the pulping step, or in the slurry salvaging step, or between the pulping step and the slurry salvaging step, and the like, and the following detailed description is made with respect to different adding manners, and it should be noted that, in the subsequent embodiments, the steps of pulping, slurry salvaging, drying and curing, edge cutting process, inspection process, and the like may refer to the above description, and are not repeated, and only the steps related to adding the rigidity-adjusting substance are described in detail.
In an embodiment of the present invention, as shown in fig. 2, first, a pulping step and a salvaging step are performed, after obtaining an initial cone, wherein, in the salvaging process, a first initial cone and a second initial cone are obtained, respectively, wherein an inner diameter of the second initial cone is larger than an inner diameter of the first initial cone;
then coating a rigidity adjusting substance on the outer surface of the first initial cone;
and putting the first initial cone into the second initial cone to compound the first initial sound and the second initial cone into a whole.
The method of applying the rigidity-adjusting substance to the outer surface of the first initial cone may be spraying the rigidity-adjusting substance onto the outer surface of the first initial cone, or brushing a layer of the rigidity-adjusting substance onto the outer surface of the first initial cone by a tool brush, or the like.
The sandwich structure of the paper cone, the rigidity adjusting substance (magnesium-lithium alloy) and the paper cone can be obtained through the embodiment.
In another embodiment of the invention, shown in fig. 3, the beating and scooping steps are performed first, after obtaining the initial cone, wherein,
coating a rigidity adjusting substance on the outer surface of the initial cone;
then, the jig is pressed so that the rigidity-adjusting substance enters or closely adheres to the outer surface of the original cone.
The method of applying the rigidity-adjusting substance to the outer surface of the initial cone may be spraying the rigidity-adjusting substance on the outer surface of the initial cone, or brushing a layer of the rigidity-adjusting substance on the outer surface of the initial cone by a tool brush, etc., but it is needless to say that a layer of the rigidity-adjusting substance may be formed on the outer surface of the initial cone by other methods, which are not listed here.
Wherein, the anchor clamps can be the rechecking anchor clamps of copper wire net and copper wire board, puts into the anchor clamps with initial sound basin and carries out the press correction and heat in the extrusion process.
In still another embodiment of the present invention, as shown in fig. 4, in this embodiment, in the beating process, a stiffness-adjusting substance is added to the pulp, and then beating is performed to obtain pulp containing the stiffness-adjusting substance.
Then, pulp containing the rigidity adjusting substance is used for carrying out pulp fishing, baking and curing and the like, and the rigidity adjusting substance can be uniformly dispersed in the loudspeaker cone by the method.
In which figure 5 shows an embodiment in which the stiffness-adjusting substance is silicon carbide. It should be noted that the above embodiments can be applied to silicon carbide and magnesium-lithium alloy, and other stiffness adjusting substances suitable for the present application.
Example two
The invention also provides a loudspeaker cone which can be prepared by the method in the first embodiment.
The speaker cone includes: the sound cone main body is used for making sound through vibration of the sound cone main body, and the sound cone main body comprises a rigidity adjusting substance so as to improve the rigidity of the loudspeaker sound cone.
The rigidity adjusting substance is not selected arbitrarily, and the rigidity adjusting substance is required to have higher rigidity than the paper cone and relatively lower density, so that the loudspeaker cone added with the rigidity adjusting substance achieves the purposes of higher Young modulus and lighter density. The problem that the Young modulus of the cone speaker is insufficient is effectively solved, so that the tone quality of the speaker is improved, and the speaker can sound more self-heating and clear; meanwhile, the high-frequency range is widened, and the sound performance is more full and real.
In an embodiment of the present invention, the rigidity adjusting substance includes at least one of magnesium-lithium alloy and silicon carbide;
optionally, the rigidity of the Mg-Li alloy is about 18 times of that of the Mg-Al alloy, the density is 1.3 g/cubic centimeter, about 50% of that of the aluminum, and about 1.6 times of that of the pulp, the Mg-Li alloy has good Young modulus and smaller density, and the density of the blended pulp can be adjusted according to the requirement of the performance, so as to achieve the purposes of higher Young modulus and lighter density.
After the magnesium-lithium alloy powder is doped, the Young modulus of the paper pulp is enhanced, and the existing high internal resistance of the paper pulp can effectively solve the problem of acoustic dyeing, so that the sound can be heard more clearly and naturally, and the high frequency is widened. The doping mass of the magnesium-lithium alloy powder is 10-15% of the mass of the paper pulp.
Optionally, the rigidity of the silicon carbide is approximately 4 times that of titanium metal, the rigidity of the silicon carbide is approximately 150 times that of the cone, the density of the silicon carbide is 3.1 g/cubic centimeter, the density of the silicon carbide is approximately 69% of that of titanium, the density of the silicon carbide is approximately 4 times that of the cone, the silicon carbide has good Young modulus and smaller density, and the density of the doped pulp can be adjusted according to the requirements of performance so as to achieve the purposes of higher Young modulus and lighter density. After the silicon carbide is doped, the Young modulus of the paper pulp is enhanced, and the existing high internal resistance of the paper pulp can effectively solve the problem of acoustic dyeing, so that the sound can be heard more clearly and naturally, and the high frequency is widened. The doped mass of the silicon carbide is 10-30% of the mass of the pulp.
Optionally, the rigidity adjusting substance is uniformly doped in the cone body; or
The rigidity adjusting substance is coated and fixed on the outer surface of the sound cone main body.
The cone body comprises a first cone body and a second cone body which are combined into a whole, wherein a layer of rigidity adjusting substance is arranged between the first cone body and the second cone body, so that a sandwich structure of paper cone-rigidity adjusting substance (magnesium-lithium alloy) -paper cone is obtained.
After the rigidity regulating substance is added into the loudspeaker cone, the loudspeaker cone has good Young modulus and smaller density, and the density of the rigidity regulating substance mixed into the paper pulp can be adjusted according to the performance requirement, so that the aims of higher Young modulus and lighter density are fulfilled. After the rigidity regulating substance is doped, the Young modulus of the paper pulp is enhanced, and the existing high internal resistance of the paper pulp can effectively solve the problem of sound dyeing, so that the sound can be heard more clearly and naturally, and the high frequency is widened.
EXAMPLE III
The invention also provides a loudspeaker, wherein the loudspeaker comprises a magnetic circuit system, the magnetic circuit system comprises an elliptic U-shaped iron, and the U-shaped iron is a magnetic conduction piece and has the functions of magnetism collection and magnetic conduction.
Optionally, the U-shaped iron has a receiving cavity therein, and the receiving cavity is oval in shape in plan view, so that the size of other elements of the magnetic circuit system received by the receiving cavity can be correspondingly increased to be oval, and the volume of each element can be increased.
In one example, the magnetic circuit system further includes a magnet disposed in the accommodating cavity for generating a magnetic field, so that when the voice coil is placed in the magnetic field, when the voice coil is energized, the current receives the force of the magnetic field, so that the voice coil vibrates, and the voice cone connected with the voice coil is driven to vibrate to make a sound.
Alternatively, the magnet may have an elliptical shape in plan view, and the volume of the magnet may be increased by making the magnet elliptical in shape, thereby increasing the volume of the magnetic field generated thereby.
Alternatively, the magnet may be any magnet capable of generating a fixed magnetic field, and may be made of natural magnets or artificial magnetic steel. For example, the magnet may include at least one of ferrite magnet and neodymium iron boron magnet, wherein, preferably, neodymium iron boron magnet may be adopted for the high sound quality loudspeaker, sound quality is first grade, elasticity is good, the aspect of details is good, the human voice is good, and the sound field location is accurate.
In one example, the magnetic circuit system further includes a voice coil, one end of the voice coil extends into the magnetic gap in the accommodating cavity, and the voice coil further includes two electrode ends electrically connected to the electrodes of the power supply, respectively, so as to provide current to the voice coil, and the current makes the voice coil vibrate under the action of the magnetic field, so as to drive the speaker cone connected with the voice coil to vibrate and make sound.
In one example, the voice coil includes a voice coil bobbin and a voice coil portion, wherein the voice coil portion is wound around an outer sidewall of the voice coil bobbin, and optionally, the voice coil portion may be wound with one wire.
For example, the voice coil bobbin is a bobbin supporting a coil, and is generally composed of kraft paper, rock paper, polyimide, aluminum foil, copper foil, glass fiber, and the like.
The voice coil portion includes a winding wire, and the winding wire may use an enameled wire, such as a self-melting enameled wire including an enameled oxygen-free copper wire, a copper-clad aluminum wire, a pure aluminum wire, or the like.
The speaker further includes: comprises a basin frame, wherein the basin frame is used for installing a magnetic circuit system, a loudspeaker cone and the like.
Wherein, the loudspeaker cone is any one loudspeaker cone in the above embodiments of the present invention.
Alternatively, the magnetic circuit system can be arranged in the basin stand; can also be arranged in the basin frame or partially arranged outside the basin frame.
In one embodiment, the basin stand is provided with a containing groove for installing the magnetic circuit system, and the magnetic circuit system is installed in the containing groove.
The loudspeaker also has the advantages because the loudspeaker cone comprises the loudspeaker cone, the loudspeaker cone has good Young modulus and smaller density after the rigidity regulating substance is added, and the density of the rigidity regulating substance mixed into the paper pulp can be adjusted according to the requirement of performance so as to achieve the purposes of higher Young modulus and lighter density. After the rigidity regulating substance is doped, the Young modulus of the paper pulp is enhanced, and the existing high internal resistance of the paper pulp can effectively solve the problem of sound dyeing, so that the sound can be heard more clearly and naturally, and the high frequency is widened. The mixing amount of the rigidity regulating substance is controlled to reduce the price of the loudspeaker cone, and the advantages of high internal resistance and low density of the paper pulp are combined.
Although the illustrative embodiments have been described herein with reference to the accompanying drawings, it is to be understood that the foregoing illustrative embodiments are merely exemplary and are not intended to limit the scope of the invention thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the scope or spirit of the present invention. All such changes and modifications are intended to be included within the scope of the present invention as set forth in the appended claims.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the units is only one logical functional division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another device, or some features may be omitted, or not executed.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the invention and aiding in the understanding of one or more of the various inventive aspects. However, the method of the present invention should not be construed to reflect the intent: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
It will be understood by those skilled in the art that all of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where such features are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
Claims (10)
1. A preparation method of a loudspeaker cone is characterized by comprising the following steps:
performing a pulping process to obtain pulp;
executing a slurry fishing process to obtain an initial cone;
baking and curing the initial cone to obtain the loudspeaker cone;
wherein, a rigidity adjusting substance is added in the process of preparing the loudspeaker cone, and the rigidity adjusting substance comprises at least one of magnesium-lithium alloy and silicon carbide.
2. The method according to claim 1, wherein the mass ratio of the added magnesium-lithium alloy to the pulp is 10% to 15%, or the mass ratio of the added silicon carbide to the pulp is 10% to 30%.
3. The method of claim 1, wherein the step of adding a rigidity-adjusting substance during the step of preparing the speaker cone comprises:
in the beating process, the rigidity-adjusting substance is added to the pulp to obtain pulp containing the rigidity-adjusting substance.
4. The method of claim 1, wherein the step of adding a rigidity-adjusting substance during the step of preparing the speaker cone comprises:
coating the rigidity adjusting substance on the outer surface of the initial cone;
extruding the initial cone coated with the rigidity adjusting substance; or
Executing a slurry fishing process to respectively obtain a first initial cone and a second initial cone, wherein the inner diameter of the second initial cone is larger than that of the first initial cone;
coating the outer surface of the first initial cone with the rigidity adjusting substance;
and putting the first initial cone into the second initial cone to compound the first initial sound and the second initial cone into a whole.
5. The method of claim 1, further comprising a trimming process and an inspection process.
6. A speaker cone, the speaker cone comprising:
the sound cone comprises a sound cone body and a rigid adjusting substance, wherein the sound cone body is used for making sound through vibration of the sound cone body, and the rigid adjusting substance comprises at least one of magnesium-lithium alloy and silicon carbide.
7. The loudspeaker cone of claim 6 wherein the rigidity-adjusting substance is uniformly doped in the cone body.
8. The speaker cone as claimed in claim 6, wherein the rigidity-adjusting substance is coated and fixed on an outer surface of the cone body.
9. The speaker cone according to claim 8, wherein the cone body comprises a first cone body and a second cone body integrated with each other, wherein a layer of the rigidity-adjustment substance is provided between the first cone body and the second cone body.
10. A loudspeaker comprising a loudspeaker cone as claimed in any one of claims 6 to 9.
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| CN201910894220.6A CN110677785B (en) | 2019-09-20 | 2019-09-20 | Loudspeaker cone, manufacturing method thereof and loudspeaker |
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| CN110677785B (en) | 2021-06-15 |
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