CN109246552B - Vibrating diaphragm, vibrating diaphragm assembly and loudspeaker - Google Patents
Vibrating diaphragm, vibrating diaphragm assembly and loudspeaker Download PDFInfo
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- CN109246552B CN109246552B CN201811140821.XA CN201811140821A CN109246552B CN 109246552 B CN109246552 B CN 109246552B CN 201811140821 A CN201811140821 A CN 201811140821A CN 109246552 B CN109246552 B CN 109246552B
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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
- H04R7/04—Plane diaphragms
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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
- H04R9/06—Loudspeakers
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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
- 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
- H04R2231/003—Manufacturing aspects of the outer suspension of loudspeaker or microphone diaphragms or of their connecting aspects to said diaphragms
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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
- H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
- H04R2307/025—Diaphragms comprising polymeric materials
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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
- H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
- H04R2307/204—Material aspects of the outer suspension of loudspeaker diaphragms
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- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Manufacturing & Machinery (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
The invention discloses a vibrating diaphragm, a vibrating diaphragm assembly and a loudspeaker. The centering support piece comprises an inner fixing part, an outer fixing part and a connecting arm, wherein the inner fixing part and the outer fixing part are arranged at intervals, the connecting arm is arranged between the inner fixing part and the outer fixing part, the connecting arm comprises a main body part, a first bending connecting part and a second bending connecting part, the first bending connecting part is arranged at one end of the main body part, the second bending connecting part is arranged at the other end of the main body part, the first bending connecting part is connected with the inner fixing part, and the second bending connecting part is; the vibrating diaphragm comprises a central part, a bent corrugated part arranged around the central part and a fixing part arranged around the corrugated part; the highest point of the part of the bending ring part corresponding to the first bending connecting part deflects towards the inner fixing part, and the highest point of the part of the bending ring part corresponding to the second bending connecting part deflects towards the outer fixing part. According to the scheme of the invention, the folded ring part of the vibrating diaphragm has a sufficient vibration space through the avoiding design of the folded ring part, so that the acoustic performance of the loudspeaker is met.
Description
Technical Field
The invention relates to the technical field of loudspeakers, in particular to a vibrating diaphragm, a vibrating diaphragm assembly and a loudspeaker.
Background
A speaker is an important acoustic component in a portable electronic device, is used for converting a sound wave electric signal into a sound signal to be output, and is an energy conversion device.
A loudspeaker generally includes a vibration system, a magnetic circuit system, and an auxiliary system, in which the vibration system and the magnetic circuit system are housed. The vibration system generally comprises a vibration diaphragm, a centering disk and a voice coil which are combined together, wherein the vibration diaphragm and the centering disk jointly form a vibration diaphragm assembly, the centering disk is used for connecting the vibration diaphragm and the voice coil into a whole, the voice coil is ensured to be vertical without deflection, the polarization of the vibration diaphragm is effectively prevented, and meanwhile, the centering disk can also influence the rigidity and the compliance of the vibration system, so that the frequency response of the loudspeaker is influenced, and the vibration system is an important part of the loudspeaker.
As shown above, the damper needs to be combined with the diaphragm, so that when the vibration system vibrates, the damper and the folded ring portion of the diaphragm deform, which causes the vibration space of the folded ring portion to be smaller, and affects the acoustic performance.
Disclosure of Invention
The invention mainly aims to provide a vibrating diaphragm, which is applied to a loudspeaker and solves the problem of small vibrating space of the vibrating diaphragm in the loudspeaker in the prior art.
In order to achieve the above object, the present invention discloses a diaphragm for combining with a centering disk, wherein the centering disk comprises an inner fixing portion, an outer fixing portion and a connecting arm, the inner fixing portion and the outer fixing portion are alternately arranged, the connecting arm is arranged between the inner fixing portion and the outer fixing portion, the connecting arm comprises a main body portion, a first bending connecting portion arranged at one end of the main body portion, and a second bending connecting portion arranged at the other end of the main body portion, the first bending connecting portion is connected with the inner fixing portion, and the second bending connecting portion is connected with the outer fixing portion;
the vibrating diaphragm comprises a central part, a bent annular part arranged around the central part and a fixing part arranged around the annular part; the highest point of the part of the bending ring part corresponding to the first bending connecting part is deviated towards the inner fixing part, and the highest point of the part of the bending ring part corresponding to the second bending connecting part is deviated towards the outer fixing part.
In an embodiment of the present invention, a cross section of a portion of the loop portion corresponding to the first bending connection portion is asymmetrically curved, and a cross section of a portion of the loop portion corresponding to the second bending connection portion is asymmetrically curved.
In an embodiment of the present invention, the main body portion is located between one side portion of the inner fixing portion and one side portion of the outer fixing portion, and the main body portion is parallel to the side portion of the inner fixing portion and the side portion of the outer fixing portion.
In an embodiment of the present invention, a distance between the main body portion and the edge portion of the inner fixing portion is equal to a distance between the main body portion and the edge portion of the outer fixing portion.
In an embodiment of the present invention, a highest point of a portion of the loop portion corresponding to the first bending connection portion is located inside a center line of the main body portion, and a highest point of a portion of the loop portion corresponding to the second bending connection portion is located outside the center line of the main body portion.
In an embodiment of the present invention, a connection line of the highest point of the portion of the folded ring portion corresponding to the main body portion and a connection line of the highest point of the portion of the folded ring portion corresponding to the first folding connecting portion are in smooth transition;
the connecting line of the highest point of the part of the folded ring part corresponding to the main body part and the connecting line of the highest point of the part of the folded ring part corresponding to the second bending connecting part are in smooth transition.
In an embodiment of the present invention, a connection line of a highest point of a portion of the bending ring portion corresponding to the main body portion is inclined from the first bending connection portion to the second bending connection portion, and forms an included angle with a center line of the main body portion.
In one embodiment of the invention, the diaphragm is made of a thermoplastic elastomer material or a silicon rubber material;
or the vibrating diaphragm is provided with a structural layer prepared from a thermoplastic elastomer material or a silicon rubber material.
The invention also discloses a diaphragm component, in an embodiment of the invention, the diaphragm component comprises:
the diaphragm of any of the above embodiments; and the number of the first and second groups,
the vibrating diaphragm is connected to the centering support plate;
the centering support piece comprises an inner fixing part, an outer fixing part and a connecting arm, wherein the inner fixing part and the outer fixing part are arranged at intervals, the connecting arm is arranged between the inner fixing part and the outer fixing part, the connecting arm comprises a main body part, a first bending connecting part and a second bending connecting part, the first bending connecting part is arranged at one end of the main body part, the second bending connecting part is arranged at the other end of the main body part, the first bending connecting part is connected with the inner fixing part, and the second bending connecting part is connected with the outer fixing part;
the center part of vibrating diaphragm with interior fixed part is connected, the fixed part of vibrating diaphragm with outer fixed part is connected.
In one embodiment, the inner fixing portion and/or the outer fixing portion are annular.
The invention also discloses a loudspeaker which comprises the diaphragm assembly of any one of the embodiments and a voice coil combined with the diaphragm assembly.
According to the technical scheme, the highest point of the part of the diaphragm corresponding to the first bending connecting part and the second bending connecting part is arranged in a shifting mode, so that when the diaphragm vibrates, the part of the diaphragm corresponding to the first bending connecting part and the second bending connecting part has a sufficient vibration space, and the acoustic performance of the loudspeaker is met. In addition, owing to set up through the corresponding peak skew of the ring portion of will rolling over again for under the prerequisite that does not increase the vibrating diaphragm volume, increase the vibration space of the ring portion of rolling over of vibrating diaphragm, in order to satisfy micro-speaker's demand.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a vibration system according to an embodiment of the present invention;
FIG. 2 is a front view of a diaphragm in an embodiment of the present invention;
FIG. 3 is a front view of a centering disk in accordance with an embodiment of the present invention;
FIG. 4 is a perspective view of a diaphragm and a centering pad according to an embodiment of the present invention (the dotted line shows the connection line of the highest point of the corrugated rim portion);
FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4;
fig. 6 is a cross-sectional view taken along line C-C of fig. 4.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | Vibrating |
220 | |
| 110 | |
230 | Connecting |
| 120 | Folded |
231 | First |
| 130 | Fixing |
232 | Second |
| 200 | |
233 | |
| 210 | |
300 | Voice coil |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a vibrating diaphragm.
As shown in fig. 1 to 5, in an embodiment, the diaphragm 100 is configured to be combined with a damper 200, the damper 200 includes an inner fixing portion 210, an outer fixing portion 220, and a connecting arm 230, the inner fixing portion 210 and the outer fixing portion 220 are disposed at an interval, the connecting arm 230 is disposed between the inner fixing portion 210 and the outer fixing portion 220, the connecting arm 230 includes a main body portion 233 and a first bending connecting portion 231 disposed at one end of the main body portion 233, and a second bending connecting portion 232 disposed at the other end of the main body portion 233, the first bending connecting portion 231 is connected to the inner fixing portion 210, and the second bending connecting portion 232 is connected to the outer fixing portion 220;
the diaphragm 100 includes a central portion 110, a curved corrugated portion 120 disposed around the central portion 110, and a fixing portion 130 disposed around the corrugated portion 120; the highest point of the portion of the loop part 120 corresponding to the first bending connection part 231 is offset toward the inner fixing part 210, and the highest point of the portion of the loop part 120 corresponding to the second bending connection part 232 is offset toward the outer fixing part 220.
In some speakers, especially micro speakers, in order to ensure that the voice coil 300 is not tilted and prevent the polarization of the diaphragm 100, a centering disk 200 is required, an outer fixing portion 220 of the centering disk 200 is connected to the fixing portion 130 and fixed on the housing, an inner fixing portion 210 is fixed to the edge of the central portion 110 of the diaphragm 100, and the outer fixing portion 220 and the inner fixing portion 210 are connected to each other by a plurality of connecting arms 230. When assembling the speaker, the diaphragm 100 and the spider 200 are bonded together by glue, and then the voice coil 300 is bonded to form a vibration system, and then the vibration system is bonded to the housing by glue. It can be seen that in the present embodiment, the diaphragm 100 is used in combination with the damper 200, that is, the combination of the diaphragm 100 and the damper 200 is a conventional technical means for those skilled in the art.
The centering branch piece 200 includes an inner fixing portion 210, an outer fixing portion 220, and a connecting arm 230, which may be adhered and fixed by glue or integrally formed. The centering support 200 may be made of an insulating substrate, which may be polyimide, or other polymer materials except polyimide.
Generally, it is necessary to provide a conductive layer on the damper 200 for electrical connection with the voice coil 300 and an external circuit of the speaker. The conducting layer can be a copper foil, and can also be other metal layers or graphene conducting layers. The conductive layer may be bonded to the stiffener 200 by cutting the copper foil according to the structure of the stiffener 200 and then bonding the copper foil with an adhesive, or by plating, printing, or weaving the conductive layer on the stiffener 200.
In the embodiment of the present invention, as described above, the vibration system is formed by combining the diaphragm 100, the spider 200, and the voice coil 300. The voice coil 300 is used for extending into a magnetic gap in the magnetic circuit system, and the current changed by the communication of the voice coil 300 is vibrated by different ampere forces, so as to drive the centering branch piece 200 and the vibrating diaphragm 100 to vibrate, i.e. the centering branch piece 200 and the vibrating diaphragm 100 can vibrate simultaneously. This centering disk 200 includes an inner fixing portion 210, an outer fixing portion 220 and a connecting arm 230 connecting the inner fixing portion 210 and the outer fixing portion 220, and since the outer fixing portion 220 of the centering disk 200 is used for being connected and fixed with the housing, the inner fixing portion 210 is used for being fixedly connected with the voice coil 300 and the edge of the central portion 110 of the diaphragm 100, therefore, when the vibration of the centering disk 200 occurs, the inner fixing portion 210 drives the connecting arm 230 to vibrate, so that the space between the first bending connection portion 231 and the second bending connection portion 232 and the bending ring portion 120 of the diaphragm changes along with the occurrence of the vibration.
Specifically, when the voice coil 300 vibrates upwards, the diaphragm 100 and the damper 200 vibrate upwards, and the inner fixing portion 210 drives the connecting arm 230 to vibrate upwards, at this time, since the first bending connection portion 231 corresponds to a portion of the edge-near portion 120, a vibration space of the edge portion 120 of the diaphragm 100 is smaller than that of the first bending connection portion 231. When the vibration space of the edge portion 120 of the diaphragm 100 is small relative to the first bending connection portion 231, the sound generating effect is influenced.
When the voice coil 300 vibrates downwards, the diaphragm 100 and the damper 200 vibrate downwards, the inner fixing portion 210 drives the connecting arm 230 to vibrate downwards, that is, the first bending connection portion 231 vibrates downwards, because the outer fixing portion 220 is fixed at this moment, when the inner fixing portion 210 drives the connecting arm 230 to vibrate downwards, the downward vibration amplitude of the second bending connection portion 232 is small, and because the second bending connection portion 232 is opposite to the edge portion of the bending ring portion 120, when the diaphragm 100 vibrates downwards, the vibration space of the bending ring portion 120 of the diaphragm 100 is smaller than that of the second bending connection portion 232, and the sound production effect is influenced.
Therefore, in the present embodiment, the highest point of the portion of the edge portion 120 corresponding to the first bending connection portion 231 and the second bending connection portion 232 is offset. That is, when the inner fixing portion 210 drives the connecting arm 230 to vibrate, the first bending connecting portion 231 and the second bending connecting portion 232 have a portion (point) with the largest vertical amplitude, and the highest point of the corresponding portion of the bending ring portion 120 is offset, so that the vibration space of the bending ring portion 120 corresponding to the first bending connecting portion 231 and the second bending connecting portion 232 can be increased, and the problem that the vibration space of the bending ring portion 120 is small is solved. As shown in fig. 4, a connection line of the highest point of the loop portion 120 is shown by a dotted line, that is, a yielding structure is formed by the loop portion 120 of the diaphragm corresponding to the first bending connection portion 231 and the second bending connection portion 232, so that the vibration space of the diaphragm can be effectively ensured when the centering branch 200 and the diaphragm 100 vibrate.
In addition, the vibration space between the connecting arm 230 and the edge portion 120 can be increased by increasing the overall height of the edge portion 120, but increasing the overall height of the edge portion 120 increases the volume of the entire speaker, which is inconvenient for miniaturization of the speaker. In this embodiment, the highest points of the portions of the ring bending portion 120 corresponding to the first bending connection portion 231 and the second bending connection portion 232 are offset, that is, the ring bending portion 120 of the diaphragm 110 forms an avoidance to the first bending connection portion 231 and the second bending connection portion 232 of the connection arm 230, so that under the condition that the volume is not increased, the vibration space is increased, and the acoustic performance of the speaker is ensured.
The flexure 120 is curved to provide a compliance to the vibrations of the central portion 110, i.e., a flexibility to make the central portion 110 more susceptible to vibrations. In addition, through being the curved shape with the setting of ring folding portion 120, can avoid vibrating diaphragm 100 to take place the stress sudden change and break in the vibration process, improved vibrating diaphragm 100's life. On the premise of ensuring the above technical effects, the curved shape of the edge portion 120 may be a semi-circle, or an arc with a certain radian, and the curved shape may be set according to actual conditions, which is not limited in the embodiment of the present invention.
Further, the highest point of the edge portion 120 corresponding to the first bending connection portion 231 and the second bending connection portion 232 may be offset, the cross section of the edge portion 120 corresponding to the edge portion may be symmetrically curved, and the entire edge portion 120 corresponding to the edge portion may be offset, so that the vibration space may be increased. However, this type of arrangement may cause the structure of the damper 200 to change, that is, when the portions of the loop part 120 corresponding to the first bending connection part 231 and the second bending connection part 232 are shifted integrally, the inner fixing part 210 and the outer fixing part 220 of the damper 200 are also shifted correspondingly by a certain distance to be combined with the diaphragm 100, which may cause a polarization problem. When the centering branch piece 200 is locally deviated, the structural strength is also not good, and even the vibration fracture may occur. Therefore, as shown in fig. 4 to 6, the section of the portion of the edge portion 120 corresponding to the first bent portion 231 is asymmetrically curved, and the section of the portion of the edge portion 120 corresponding to the second bent portion 232 is asymmetrically curved. By arranging the portion corresponding to the loop portion 120 in an asymmetric curved shape, at this time, the highest point of the portion corresponding to the loop portion 120 is offset, but the portion corresponding to the loop portion 120 does not need to be offset as a whole.
It can be understood that, the offset of the corresponding portion of the folded ring portion 120 or the asymmetric bending of the cross section of the folded ring portion 120 are all made during the preparation of the diaphragm 100.
In one embodiment, as shown in fig. 3, the body part 233 is positioned between one side portion of the inner fixing part 210 and one side portion of the outer fixing part 220, and the body part 233 is parallel to the side portion of the inner fixing part 210 and the side portion of the outer fixing part 220. In the present embodiment, the main body 233 is disposed parallel to the side of the inner fixing portion 210 and the side of the outer fixing portion 220, so that the main body 233 ensures a maximum space between itself and the edge portion 120 when vibrating with the voice coil, and ensures a maximum vibration space at a portion of the edge portion 120 corresponding to the main body 233.
Further, the distance from the body portion 233 to the side portion of the inner fixing portion 210 is equal to the distance from the body portion 233 to the side portion of the outer fixing portion 220. In the present embodiment, by such an arrangement, a maximum space between the folded ring portion 120 and the folded ring portion 120 is ensured, and a maximum vibration space is ensured at a portion of the folded ring portion 120 corresponding to the main body portion 233.
In one embodiment, as shown in fig. 4, the highest point of the portion of the edge portion 120 corresponding to the first bending connection portion 231 is located inside the center line of the main body portion 233, and the highest point of the portion of the edge portion 120 corresponding to the second bending connection portion 232 is located outside the center line of the main body portion 233. In this embodiment, by such an arrangement, the space of the corresponding portion of the folded ring portion 120 and the first and second bending connection portions 231 and 232 can be maximized, so that the vibration space of the folded ring portion 120 is effectively ensured.
In an embodiment, as shown in fig. 4, a connection line of the highest point of the portion of the edge portion 120 corresponding to the main body portion 233 and a connection line of the highest point of the portion of the edge portion 120 corresponding to the first bending connection portion 231 are in smooth transition;
the line of the highest point of the portion of the folded ring portion 120 corresponding to the main body portion 233 and the line of the highest point of the portion of the folded ring portion 120 corresponding to the second bending connection portion 232 are smoothly transited.
In this embodiment, by the above arrangement, the portions of the bending ring portion 120 corresponding to the first bending connection portion 231, the main body portion 233 and the second bending connection portion 232 are smoothly transited, so that the diaphragm 100 is prevented from being broken due to sudden stress change during the vibration process, and the acoustic performance is ensured.
Furthermore, a connection line of the highest point of the portion of the edge portion 120 corresponding to the main body portion 233 is inclined from the first bending connection portion 231 to the second bending connection portion 232, and forms an angle with the center line of the main body portion 233. Thus, the portions of the ring bending part 120 corresponding to the main body part 233 are in a shape of central symmetry, so that the portions of the ring bending part 120 corresponding to the main body part 233 smoothly transition to the portions corresponding to the first bending connection part 231 and the second bending connection part 232, and the diaphragm 100 is not easily damaged by vibration.
In one embodiment, the diaphragm 100 is made of a thermoplastic elastomer material or a silicone rubber material.
In this embodiment, the thermoplastic elastomer has a structural feature that different resin segments and rubber segments are composed of chemical bonds, the resin segments form physical cross-linking points by virtue of inter-chain forces, and the rubber segments are high-elasticity segments and contribute to elasticity. Thermoplastic elastomeric materials include, but are not limited to, thermoplastic polyester elastomers (TPEE), thermoplastic polyurethane elastomers (TPU), polyamide-based thermoplastic elastomers (TPEE). By the application of the thermoplastic elastomer, the acoustic performance of the loudspeaker can be improved (the resonance frequency is reduced, the product frequency band is widened, and the like).
Of course, it is also possible to use silicone rubber materials whose main chain is composed of alternating silicon and oxygen atoms, to which two organic groups are generally attached, which have a function of the type of thermoplastic elastomer, capable of improving the acoustic properties of the loudspeaker (lowering the resonance frequency, widening the product band, etc.).
In another embodiment, the diaphragm 100 is provided with a structural layer made of a thermoplastic elastomer material or a silicone rubber material. In this embodiment, the diaphragm 100 is a multi-layer structure, and has a structural layer made of a thermoplastic elastomer material or a silicone rubber material, and the diaphragm 100 with this structure includes the technical effects of the previous embodiment, and will not be described again.
The invention also discloses a diaphragm component, in one embodiment, the diaphragm component comprises:
a diaphragm 100; and the number of the first and second groups,
the damper 200, and the diaphragm 100 are connected to the damper 200.
Referring to the foregoing embodiment, since the diaphragm assembly employs all technical solutions of the foregoing embodiment, at least all beneficial effects brought by the technical solutions of the foregoing embodiment are achieved, and are not described in detail herein.
The centering branch piece 200 comprises an inner fixing part 210, an outer fixing part 220 and a connecting arm 230, wherein the inner fixing part 210 and the outer fixing part 220 are arranged at intervals, the connecting arm 230 is arranged between the inner fixing part 210 and the outer fixing part 220, the connecting arm 230 comprises a main body part 233, a first bending connecting part 231 arranged at one end of the main body part 233 and a second bending connecting part 232 arranged at the other end of the main body part 233, the first bending connecting part 231 is connected with the inner fixing part 210, and the second bending connecting part 232 is connected with the outer fixing part 220;
the edge of the center portion 110 of the diaphragm is connected to the inner fixing portion 210, and the fixing portion 130 of the diaphragm is connected to the outer fixing portion 220.
In this embodiment, in order to ensure that the voice coil 300 is not tilted and prevent the polarization of the diaphragm 100, a damper 200 is required, an outer fixing portion 220 of the damper 200 is fixed on the housing, an inner fixing portion 210 is fixed to the edge of the central portion 110 of the diaphragm 100, and the outer fixing portion 220 and the inner fixing portion 210 are connected to each other by a plurality of connecting arms 230. When assembling the speaker, the diaphragm 100 and the spider 200 are bonded together by glue, and then the voice coil 300 is bonded to form a vibration system, and then the vibration system is bonded to the housing by glue.
In this embodiment, the inner fixing portion 210 is used to be bonded to the edge of the central portion 110 of the diaphragm, the outer fixing portion 220 is fixed to the housing after being combined with the fixing portion 130 of the diaphragm, and the voice coil 300 is fixed to the diaphragm 100 or the spider 200, corresponding to the edge of the central portion 110 or the inner fixing portion 210. When the voice coil 300 vibrates under an ampere force, the diaphragm 100 and the damper 200 are driven to vibrate, and thus, a sound is output.
Further, as shown in fig. 2, the inner fixing portion 210 and/or the outer fixing portion 220 have a ring shape. The ring shape is a round-corner rectangle shape. Specifically, the connecting arms 230 are provided in four, and are uniformly distributed between the inner fixing portion 210 and the outer fixing portion 220.
In one embodiment, the loudspeaker comprises the diaphragm assembly and a voice coil combined with the diaphragm assembly. In this embodiment, the specific structure of the diaphragm assembly refers to the above embodiments, has all technical solutions of the above embodiments, and is not repeated.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (11)
1. A vibrating diaphragm is used for being combined with a centering support piece, wherein the centering support piece comprises an inner fixing part, an outer fixing part and a connecting arm, the inner fixing part and the outer fixing part are arranged at intervals, the connecting arm is arranged between the inner fixing part and the outer fixing part, the connecting arm comprises a main body part, a first bending connecting part and a second bending connecting part, the first bending connecting part is arranged at one end of the main body part, the second bending connecting part is arranged at the other end of the main body part, the first bending connecting part is connected with the inner fixing part, and the second bending connecting part is connected with the outer fixing part;
the vibrating diaphragm is characterized by comprising a central part, a bent annular part arranged around the central part and a fixing part arranged around the annular part; the vertex of the position corresponding to the first bending connecting part and the bending ring part is deviated towards the inner fixing part, the vertex of the position corresponding to the second bending connecting part and the bending ring part is deviated towards the outer fixing part, the main body part is positioned between one edge part of the inner fixing part and one edge part of the outer fixing part, and the main body part is not perpendicular to the edge parts of the inner fixing part and the outer fixing part.
2. The diaphragm of claim 1, wherein a cross section of a portion of the loop portion corresponding to the first bending connection portion is asymmetrically curved, and a cross section of a portion of the loop portion corresponding to the second bending connection portion is asymmetrically curved.
3. The diaphragm of claim 1, wherein the body portion is parallel to the side portion of the inner fixing portion and the side portion of the outer fixing portion.
4. The diaphragm of claim 3, wherein a distance from the main body portion to the side portion of the inner fixing portion is equal to a distance from the main body portion to the side portion of the outer fixing portion.
5. The diaphragm of claim 3 or 4, wherein the highest point of the portion of the loop portion corresponding to the first bending connection portion is located on the inner side of the center line of the main body portion, and the highest point of the portion of the loop portion corresponding to the second bending connection portion is located on the outer side of the center line of the main body portion.
6. The diaphragm according to any one of claims 1 to 4, wherein a line connecting highest points of portions of the bending ring portion corresponding to the main body portion and a line connecting highest points of portions of the bending ring portion corresponding to the first bending connection portion are in smooth transition;
the connecting line of the highest point of the part of the folded ring part corresponding to the main body part and the connecting line of the highest point of the part of the folded ring part corresponding to the second bending connecting part are in smooth transition.
7. The diaphragm of claim 6, wherein a line connecting the highest point of the portion of the bending ring portion corresponding to the main body portion is inclined from the first bending connection portion to the second bending connection portion, and forms an included angle with a center line of the main body portion.
8. The diaphragm of claim 1, wherein the diaphragm is made of a thermoplastic elastomer material or a silicone rubber material;
or the vibrating diaphragm is provided with a structural layer prepared from a thermoplastic elastomer material or a silicon rubber material.
9. A diaphragm assembly, comprising:
the diaphragm of any one of claims 1 to 8; and the number of the first and second groups,
the vibrating diaphragm is connected to the centering support plate;
the centering support piece comprises an inner fixing part, an outer fixing part and a connecting arm, wherein the inner fixing part and the outer fixing part are arranged at intervals, the connecting arm is arranged between the inner fixing part and the outer fixing part, the connecting arm comprises a main body part, a first bending connecting part and a second bending connecting part, the first bending connecting part is arranged at one end of the main body part, the second bending connecting part is arranged at the other end of the main body part, the first bending connecting part is connected with the inner fixing part, and the second bending connecting part is connected with the outer fixing part;
the center part of vibrating diaphragm with interior fixed part is connected, the fixed part of vibrating diaphragm with outer fixed part is connected.
10. The diaphragm assembly of claim 9, wherein the inner anchor portion and/or the outer anchor portion is annular.
11. A loudspeaker comprising a diaphragm assembly as claimed in claim 9 or 10 and a voice coil integrated with the diaphragm assembly.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811140821.XA CN109246552B (en) | 2018-09-28 | 2018-09-28 | Vibrating diaphragm, vibrating diaphragm assembly and loudspeaker |
| PCT/CN2018/125340 WO2020062692A1 (en) | 2018-09-28 | 2018-12-29 | Vibration diaphragm, vibration diaphragm assembly and loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811140821.XA CN109246552B (en) | 2018-09-28 | 2018-09-28 | Vibrating diaphragm, vibrating diaphragm assembly and loudspeaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109246552A CN109246552A (en) | 2019-01-18 |
| CN109246552B true CN109246552B (en) | 2020-04-24 |
Family
ID=65056311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811140821.XA Active CN109246552B (en) | 2018-09-28 | 2018-09-28 | Vibrating diaphragm, vibrating diaphragm assembly and loudspeaker |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109246552B (en) |
| WO (1) | WO2020062692A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110933575B (en) * | 2020-02-20 | 2020-06-09 | 共达电声股份有限公司 | Centering support piece and loudspeaker with same |
| CN112261550B (en) * | 2020-09-29 | 2021-10-19 | 瑞声新能源发展(常州)有限公司科教城分公司 | Auxiliary vibrating diaphragm and sound production device |
| CN220457596U (en) * | 2023-08-16 | 2024-02-06 | 安克创新科技股份有限公司 | A loudspeaker and open earphones |
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| CN202183863U (en) * | 2011-08-15 | 2012-04-04 | 浙江东阳东磁有限公司 | Loudspeaker with combined structure of folded ring and lead wire |
| CN204598307U (en) * | 2015-05-04 | 2015-08-26 | 歌尔声学股份有限公司 | Centring disk and be provided with the Microspeaker of this centring disk |
| CN205961417U (en) * | 2016-07-06 | 2017-02-15 | 歌尔股份有限公司 | Vibrating diaphragm structure |
| CN207884877U (en) * | 2017-09-11 | 2018-09-18 | 苹果公司 | Transducer assemblies, the circular object of circular object and Microspeaker for suspension transducer diaphragm |
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| DK1515582T3 (en) * | 2003-09-11 | 2006-05-15 | Akg Acoustics Gmbh | Dynamic electro-acoustic converter, especially small speaker |
| EP1694094A1 (en) * | 2005-02-18 | 2006-08-23 | AKG Acoustics GmbH | Membrane for a dynamic converter |
| CN201667712U (en) * | 2010-04-22 | 2010-12-08 | 歌尔声学股份有限公司 | Moving-coil type electroacoustic transducer |
| CN201898604U (en) * | 2010-11-05 | 2011-07-13 | 富祐鸿科技股份有限公司 | Metal elastic wave structure of loudspeaker |
| KR101154252B1 (en) * | 2010-11-29 | 2012-06-13 | 주식회사 엑셀웨이 | Damper of voice coil plate for flat type speaker |
| CN202679608U (en) * | 2012-06-13 | 2013-01-16 | 瑞声光电科技(常州)有限公司 | Loudspeaker |
| CN104822113A (en) * | 2015-04-22 | 2015-08-05 | 歌尔声学股份有限公司 | Speaker device |
| CN204598306U (en) * | 2015-05-04 | 2015-08-26 | 歌尔声学股份有限公司 | Vibrating diaphragm assembly and be provided with the Microspeaker of this vibrating diaphragm assembly |
| JP2017038185A (en) * | 2015-08-07 | 2017-02-16 | ヤマハ株式会社 | Flat speaker |
| CN205883564U (en) * | 2016-08-04 | 2017-01-11 | 客我禧音响（苏州）有限公司 | Small high -power loudspeaker |
| CN206963073U (en) * | 2017-07-18 | 2018-02-02 | 歌尔科技有限公司 | A kind of loudspeaker |
| CN207304908U (en) * | 2017-08-31 | 2018-05-01 | 歌尔股份有限公司 | Vibrating diaphragm and loudspeaker monomer for loudspeaker |
| CN207266272U (en) * | 2017-10-17 | 2018-04-20 | 东莞顺合丰电业有限公司 | Diaphragm structure |
| CN108271106A (en) * | 2018-01-08 | 2018-07-10 | 瑞声科技(新加坡)有限公司 | Loud speaker |
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2018
- 2018-09-28 CN CN201811140821.XA patent/CN109246552B/en active Active
- 2018-12-29 WO PCT/CN2018/125340 patent/WO2020062692A1/en not_active Ceased
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202183863U (en) * | 2011-08-15 | 2012-04-04 | 浙江东阳东磁有限公司 | Loudspeaker with combined structure of folded ring and lead wire |
| CN204598307U (en) * | 2015-05-04 | 2015-08-26 | 歌尔声学股份有限公司 | Centring disk and be provided with the Microspeaker of this centring disk |
| CN205961417U (en) * | 2016-07-06 | 2017-02-15 | 歌尔股份有限公司 | Vibrating diaphragm structure |
| CN207884877U (en) * | 2017-09-11 | 2018-09-18 | 苹果公司 | Transducer assemblies, the circular object of circular object and Microspeaker for suspension transducer diaphragm |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020062692A1 (en) | 2020-04-02 |
| CN109246552A (en) | 2019-01-18 |
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