WO2018143129A1 - Plaque de vibration - Google Patents

Plaque de vibration Download PDF

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Publication number
WO2018143129A1
WO2018143129A1 PCT/JP2018/002761 JP2018002761W WO2018143129A1 WO 2018143129 A1 WO2018143129 A1 WO 2018143129A1 JP 2018002761 W JP2018002761 W JP 2018002761W WO 2018143129 A1 WO2018143129 A1 WO 2018143129A1
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WO
WIPO (PCT)
Prior art keywords
center
gravity
diaphragm
coil pattern
vibration element
Prior art date
Application number
PCT/JP2018/002761
Other languages
English (en)
Japanese (ja)
Inventor
宏介 竹内
Original Assignee
株式会社村田製作所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 株式会社村田製作所 filed Critical 株式会社村田製作所
Priority to CN201890000440.9U priority Critical patent/CN209964281U/zh
Publication of WO2018143129A1 publication Critical patent/WO2018143129A1/fr

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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
    • H04R7/06—Plane diaphragms comprising a plurality of sections or layers
    • H04R7/10—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers in contact
    • 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
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • H04R7/22—Clamping rim of diaphragm or cone against seating
    • 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
    • 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
    • H04R9/04—Construction, mounting, or centering of coil

Definitions

  • the present invention relates to a diaphragm having a coil pattern formed on an insulator layer.
  • a diaphragm in which a coil pattern having a coil axis in a stacking direction is formed in a plurality of layers has been proposed in a substrate composed of an insulator layer (see, for example, Patent Document 1).
  • a plurality of coil patterns are electrically connected by interlayer connection conductors.
  • the coil pattern is basically arranged symmetrically with respect to the center of the diaphragm. Furthermore, since the insulating base material and the coil pattern have a high degree of design freedom, it is easy to design the center of gravity of the insulating base material and the coil pattern near the center of the diaphragm.
  • the position of the interlayer connection conductor is uniquely determined by the inductance value and the outer dimension required by the diaphragm. Therefore, there is a high possibility that the center of gravity of the interlayer connection conductor deviates from the center of the coil pattern formation region. When the center of gravity of the interlayer connection conductor deviates from the center of the coil pattern formation region, the vibration of the diaphragm becomes a distorted shape and noise is generated, and desired vibration characteristics cannot be obtained.
  • an object of the present invention is to solve the above-described problems, and to provide a diaphragm capable of obtaining desired vibration characteristics by suppressing noise generation during vibration even when an interlayer connection conductor is disposed. It is in.
  • a vibration element having a coil axis in the thickness direction, in which a coil pattern and an interlayer connection conductor are formed; A support portion that extends outward from both sides of the vibration element to attach the vibration element to a housing; A diaphragm with In a plan view of the diaphragm, the coil pattern and the interlayer are arranged such that the center of gravity of the interlayer connection conductor formed in the coil pattern forming portion approaches the center of the coil pattern forming portion surrounded by the outer edge of the coil pattern.
  • the center of gravity adjusting member or notch that is not electrically connected to the connection conductor is a diaphragm arranged in the vibration element.
  • the diaphragm which suppresses noise generation at the time of a vibration and can obtain a desired vibration characteristic can be provided.
  • FIG. 3 is an exploded perspective view schematically showing the structure of the diaphragm according to the first embodiment of the present invention. It is a perspective view which shows typically the place where the diaphragm shown in FIG. 1 is attached to a housing
  • FIG. 3 is a side sectional view schematically showing an A-A ′ section in FIG. 2. It is the top view and side sectional view which show typically the example of the coil pattern formation part enclosed by the outer edge of a coil pattern, and the center of the coil pattern formation part in planar view of a diaphragm.
  • FIG. 3 is an exploded perspective view schematically showing the structure of the diaphragm according to the first embodiment of the present invention. It is a perspective view which shows typically the place where the diaphragm shown in FIG. 1 is attached to a housing
  • FIG. 3 is a side sectional view schematically showing an A-A ′ section in FIG. 2. It is the top view and side sectional view which show typically the example of the coil
  • FIG. 2 is a plan view schematically showing the arrangement of a gravity center adjusting member for bringing the center of gravity of an interlayer connection conductor closer to the center of a coil pattern forming portion in a plan view of the diaphragm shown in FIG. 1. It is a figure which shows the modification of 1st Embodiment, Comprising: (a) Top view and (b) Side surface sectional view which show typically the state with which the diaphragm which has a support member different from FIG. 1 was attached to the housing
  • FIG. 1st Embodiment Comprising: (a) An exploded perspective view which shows typically the diaphragm which has a single-layer insulator layer, (b) Coil pattern formation part at the time of planar view It is a top view which shows typically arrangement
  • FIG. 9 is a plan view schematically showing the arrangement of notches for bringing the center of gravity of an interlayer connection conductor closer to the center of a coil pattern forming portion in a plan view of the diaphragm shown in FIG. 8.
  • A A perspective view schematically showing the structure of a diaphragm according to a third embodiment of the present invention, and the arrangement of the center of gravity adjusting member for bringing the center of gravity of the interlayer connection conductor closer to the center of the coil pattern forming portion It is a (b) top view and (c) side sectional view showing.
  • the thickness direction of the diaphragm that is, the stacking direction is shown as the Z-axis direction.
  • the longitudinal direction in which the diaphragm extends is the X-axis direction
  • the width direction of the diaphragm orthogonal to it is Y Shown as axial.
  • FIG. 1 is an exploded perspective view schematically showing the structure of the diaphragm 2 according to the first embodiment of the present invention.
  • FIG. 2 is a perspective view schematically showing that the diaphragm 2 shown in FIG. 1 is attached to the housing 50.
  • FIG. 3 is a side cross-sectional view schematically showing the AA ′ cross section of FIG. 2, and shows a state where the diaphragm 2 shown in FIG.
  • the diaphragm 2 includes an insulator layer 4a formed with a coil pattern 8a, an insulator layer 4b formed with a coil pattern 8b, and an insulator layer 4c formed with a coil pattern 8c.
  • a laminated vibration element 4 is provided.
  • the insulating layer 4a is formed with interlayer connection conductors 10a penetrating through the upper and lower surfaces, whereby a coil pattern 8a formed on the insulating layer 4a and a coil pattern 8b formed on the insulating layer 4b. Electrically connected.
  • the insulating layer 4b is formed with interlayer connection conductors 10b penetrating in the upper and lower surfaces, whereby a coil pattern 8b formed in the insulating layer 4b and a coil pattern formed in the insulating layer 4c are formed. 8c is electrically connected.
  • the insulating layer 4b is further formed with an interlayer connecting conductor 10c penetrating the upper and lower surfaces
  • the insulating layer 4a is further formed with an interlayer connecting conductor 10c 'penetrating the upper and lower surfaces.
  • the interlayer connection conductors 10c and 10c ′ are connected in the vertical direction, and the coil pattern 8c formed on the insulator layer 4c is electrically connected to the interlayer connection conductors 10c and 10c ′ reaching the upper surface of the insulator layer 4a. .
  • the diaphragm 2 is provided with support portions 6 that extend outward from both sides of the vibration element 4 and attach the vibration element 4 to the housing 50.
  • the support portion 6 of this embodiment is configured as an insulating layer in which a support portion element 6c at the center and support portion elements 6a and 6b extending outward from both sides thereof are integrated, and the support portion element 6c of the support portion 6 is formed.
  • the insulating layer 4a is laminated on the upper side.
  • Each support element 6a, 6b extending from both sides of the vibration element 4 extends from the same position (position of the uppermost layer) in the stacking direction in the cross-sectional view of the vibration plate 2.
  • connection terminal 12a is formed on the support element 6a (and a part of the support element 6c), and a coil pattern formed on the connection terminal 12a and the insulator layer 4a by connection conductors 14a penetrating the upper and lower surfaces of the support 6. 8a is electrically connected.
  • a connection terminal 12b is formed on the support element 6b (and a part of the support element 6c), and reaches the connection terminal 12b and the upper surface of the insulator layer 4a by the connection conductor 14b penetrating the upper and lower surfaces of the support 6. It is electrically connected to the interlayer connection conductor 10c ′.
  • connection terminal 12a includes a horizontal conductor 12a1, an upper and lower conductor 12a2 penetrating the upper and lower surfaces, and a lower surface electrically connected to the housing side terminal 52a.
  • the terminal 12a3 is electrically connected to each other.
  • connection terminal 12b includes a horizontal conductor 12b1, an upper and lower conductor 12b2 penetrating the upper and lower surfaces, and a lower surface terminal 12b3 electrically connected to the housing side terminal 52b, and each is electrically connected.
  • the insulator layers 4a and 4b have center of gravity adjustment for adjusting the position of the center of gravity of the interlayer connection conductors 10a, 10b, 10c and 10c ′ (hereinafter referred to as “interlayer connection conductors 10a to 10c”).
  • a member 30 is arranged.
  • the center-of-gravity adjusting member 30 is not electrically connected to the coil patterns 8a to 8c, the interlayer connection conductors 10a to 10c, and the connection conductors 14a and 14b.
  • the diaphragm 2 having such a configuration is opened at the center by the support portions 6 (specifically, support portion elements 6 a and 6 b extending outward from both sides of the vibration element 4). It is mounted on the upper surface of the housing 50 having 50a. At this time, the lower surface terminals 12a3 and 12b3 disposed on the lower surface of the distal end region of the connection terminals 12a and 12b are electrically connected to the case side terminals 52a and 52b provided on the case 50 through the solder 16. .
  • the current flowing from the case-side terminal 52a to the connection terminal 12a flows through the coil pattern 8a via the connection conductor 14a.
  • the coil pattern 8b flows through the connection conductor 10a, further flows through the coil pattern 8c through the interlayer connection conductor 10b, and further flows to the connection terminal 12b through the interlayer connection conductors 10c, 10c ′ and the connection conductor 14b. It flows out from the housing side terminal 52b. Due to this current, a magnetic flux having a coil axis in the thickness direction (that is, the stacking direction) of diaphragm 2 is generated.
  • the electromagnetic force can be increased by increasing the inductance.
  • the diaphragm 2 vibrates up and down.
  • a diaphragm 2 can be applied to various technical fields including a diaphragm of a speaker.
  • FIG. 1 a meander-shaped coil pattern is shown, but the present invention is not limited to this, and any other coil pattern including a spiral shape can be adopted.
  • the vibration element 4 in which the three insulator layers 4a to 4c are laminated is shown, but the present invention is not limited to this, and the vibration in which any other number of insulator layers are laminated. An element can be employed.
  • the vibration element 4 may be formed of a single insulating layer.
  • the diaphragm 2 of the present embodiment can be formed by the following manufacturing method. First, four insulating films in which a copper foil is stretched over the entire surface of one side are prepared. As the insulating film, a thermoplastic resin such as liquid crystal polymer (LCP) can be used. Next, a pattern corresponding to the insulator layers 4a to 4c and the support portion 6 is formed by a patterning process such as photolithography. Next, via holes penetrating only the insulating base material are formed by laser processing or the like from the surface of the insulating layers 4a to 4c and the support portion 6 where the copper foil is not stretched. The via hole is filled with a conductive paste containing a conductive material such as a Sn—Cu alloy.
  • LCP liquid crystal polymer
  • the insulating layers 4a to 4c and the support portion 6 are joined by a pressure press or the like to form the diaphragm 2.
  • the conductive paste filled in the through holes is also heated and hardened to form interlayer connection conductors 10a to 10c and connection conductors 14a and 14b that electrically connect the upper and lower patterns.
  • the center-of-gravity adjusting member 30 can be formed along with the process of forming the interlayer connection conductors 10a to 10c in the manufacturing process of the diaphragm 2.
  • a thermoplastic resin for the insulator layer the insulator layers are firmly bonded and integrated, and the delamination when bending force is applied by vibration is more effectively suppressed.
  • the plurality of insulator layers are directly laminated without interposing different types of resin layers such as an adhesive layer, an interface between different insulator layers is not formed, and delamination is further suppressed.
  • the vibration characteristics of the vibrating body 2 are greatly influenced by the position of the center of gravity of the interlayer connection conductors 10a to 10c. The Therefore, it is important for suppressing the generation of noise during vibration to bring the center of gravity of the interlayer connection conductors 10a to 10c closer to the center of the coil pattern forming portion 20 when the diaphragm is viewed in the XX plane (plan view). It is.
  • the centers of the coil patterns 8a to 8c can be defined as the dimensional center C of the coil pattern forming portion 20 (for example, FIG. 4).
  • the support portions 6 extending from both sides of the vibration element 4 extend from the same position (the position of the uppermost layer) in the stacking direction in the cross-sectional view, so the stacking direction in the cross-sectional view of the diaphragm 2
  • the positions of the centers of gravity of the interlayer connection conductors 10a to 10c do not greatly affect the vibration characteristics. Therefore, when the center of gravity of the interlayer connection conductors 10a to 10c is brought close to the center C of the coil pattern forming portion 20 in a plan view of the diaphragm 2, it is considered that generation of noise during vibration can be suppressed.
  • FIG. 4 is an example of the coil pattern forming unit 20 surrounded by the outer edges of the coil patterns 8a to 8c, and a plan view and a side sectional view schematically showing the center C of the coil pattern forming unit 20 in a plan view of the diaphragm 2.
  • FIG. 4A is a plan view showing a case where the coil pattern forming portion 20 surrounded by the outer edge of the coil pattern 8 has a rectangular planar shape, and the position of the center C is shown.
  • 4B is a side sectional view showing a case where the coil pattern forming portion 20 has a rectangular sectional shape, and shows a central axis extending in the stacking direction corresponding to the center C.
  • FIG. 4A is a plan view showing a case where the coil pattern forming portion 20 surrounded by the outer edge of the coil pattern 8 has a rectangular planar shape, and the position of the center C is shown.
  • 4B is a side sectional view showing a case where the coil pattern forming portion 20 has a rectangular section
  • FIG. 4C is a plan view showing a case where the coil pattern forming portion 20 surrounded by the outer edge of the coil pattern 8 has an elliptical planar shape, and the position of the center C is shown.
  • FIG. 4D is a side sectional view showing the case where the coil pattern forming portion 20 has a rectangular sectional shape, and shows a central axis extending in the stacking direction corresponding to the center C.
  • the planar shape of the coil pattern forming unit 20 can have any other shape including a square, a circle, and a polygon.
  • FIG. 5 is a plan view schematically showing the arrangement of the center of gravity adjusting member 30 for bringing the center of gravity G of the interlayer connection conductors 10a to 10c closer to the center C of the coil pattern forming portion 20 in the plan view of the diaphragm 2 shown in FIG. FIG.
  • the center of gravity G of the interlayer connection conductors 10a to 10c is shifted from the center C of the coil pattern forming portion 20 to the lower right side in plan view.
  • the coil pattern 8 and the interlayer connection conductors 10a to 10c are electrically connected so that the center of gravity G of the interlayer connection conductors 10a to 10c approaches the center C of the coil pattern forming unit 20.
  • a center-of-gravity adjusting member 30 that is not connected to the vibration element 4 is disposed in the vibration element 4.
  • the center-of-gravity adjusting member 30 is an area along a straight line connecting the center of gravity G and the center C, and is disposed on the opposite side (upper left) of the center of gravity G to the interlayer connection.
  • the center of gravity G of the conductors 10a to 10c can be brought close to the center C of the coil pattern forming unit 20 (see the white arrow in FIG. 5B).
  • the region along the straight line connecting the center of gravity G and the center C means a region on or near the straight line connecting the center of gravity G and the center C. It is preferable that at least a part of the center-of-gravity adjusting member 30 overlaps a straight line connecting the center of gravity G and the center C.
  • the present invention is not limited to this, and at least if the center of gravity adjusting member 30 is located in the vicinity of a straight line connecting the center of gravity G and the center C, the center of gravity G of the interlayer connection conductors 10a to 10c is set to the coil pattern forming portion 20. Can be brought close to the center C.
  • the center of gravity adjusting member 30 that is not electrically connected to the coil pattern 8 and the interlayer connection conductors 10a to 10c is disposed in the vibration element 4, so that the diaphragm 2 is viewed in a plan view.
  • the center of gravity G of the interlayer connection conductors 10a to 10c formed in the coil pattern forming portion 20 can be brought close to the center C of the coil pattern forming portion 20 surrounded by the outer edge of the coil pattern 8. Thereby, noise generation during vibration of the diaphragm 2 can be suppressed.
  • the center-of-gravity adjusting member 30 is a region along a straight line connecting the center of gravity G and the center C, and is disposed on the opposite side of the center of gravity G from the center C.
  • the center of gravity G can be brought close to the center C of the coil pattern forming unit 20.
  • means for bringing the center of gravity G of the interlayer connection conductors 10a to 10c closer to the center C of the coil pattern forming portion 20 is not limited to this.
  • it can be realized by arranging a plurality of center-of-gravity adjusting members 30 in a region deviating from a straight line connecting the center of gravity G and the center C based on the center-of-gravity calculation.
  • the gravity center adjusting unit 30 on the inner layer side of the outermost coil pattern 8 in the thickness direction. Since the amount of displacement on the outer layer side is large when the diaphragm 2 vibrates, the center of gravity adjusting member 30 can be arranged on the inner layer side to suppress the occurrence of breakage and the like in the center of gravity adjusting portion 30 and its surroundings.
  • the center-of-gravity adjusting member 30 is preferably made of a metal material, and particularly preferably made of a constituent member of the coil pattern 8. Furthermore, the center-of-gravity adjusting member 30 can be formed of a dummy via that is not electrically connected to the coil pattern 8 and the interlayer connection conductors 10a to 10c, a dummy pattern, or a combination of a dummy via and a dummy pattern. In this case, the center-of-gravity adjusting member 30 can be formed together with the via and coil pattern forming process in the manufacturing process of the diaphragm 2, so that the center-of-gravity adjusting member 30 can be efficiently formed.
  • FIG. 6 is a view showing a modification of the first embodiment, and schematically shows a state in which the diaphragm 2 having the support portion 6 different from FIG. 1 is attached to the housing 50.
  • B It is side surface sectional drawing.
  • the support portion 6 shown in FIG. 6 there is no central support portion element, and the support portion elements 6 a and 6 b are directly attached to the vibration element 4.
  • the film 18 is bonded to the upper portion of the film 18 via the adhesive layer 18a so as to cover the whole.
  • the film 18 covers the entire periphery of the opening 50 a of the housing 50.
  • the support elements 6 a and 6 b extending outward from the vibration element 4 are stably held by the film 18. Furthermore, since the entire periphery of the film 18 is joined to the housing 50, twisting and the like are less likely to occur when the vibration element 4 vibrates.
  • FIG. 7 is a view showing a modification of the first embodiment, and schematically shows a diaphragm 2 having a single insulating layer (a) an exploded perspective view, and (b) a plan view.
  • 4 is a plan view schematically showing the arrangement of a gravity center adjusting member 30 for bringing the center of gravity G of the interlayer connection conductors 10a to 10d closer to the center C of the coil pattern forming unit 20.
  • FIG. 7A the vibration element 4 is composed of one insulator layer, and coil patterns 8a and 8b are formed on the upper and lower surfaces thereof.
  • the vibration element 4 includes four interlayer connection conductors 10a to 10d. As shown in FIG.
  • the coil pattern 8 and the interlayer connection conductor A center-of-gravity adjusting member 30 that is not electrically connected to 10 a to 10 d is disposed in the vibration element 4.
  • the centroid adjustment member 30 is an area along a straight line connecting the centroid G and the center C, and is disposed on the opposite side of the center C from the centroid G.
  • FIG. 8 is an exploded perspective view schematically showing the structure of the diaphragm 2 according to the second embodiment of the present invention.
  • 9 is a plan view schematically showing the arrangement of the notches 40 for bringing the center of gravity G of the interlayer connection conductors 10a to 10c closer to the center C of the coil pattern forming portion 20 in the plan view of the diaphragm 2 shown in FIG. It is.
  • the notch 40 is used instead of the center of gravity adjusting member.
  • the coil patterns 8a to 8c and the coil patterns 8a to 8c and the center C of the coil pattern forming portion 20 surrounded by the outer edges of the coil patterns 8a to 8c in the plan view of the diaphragm 2 A notch 40 that is not electrically connected to the interlayer connection conductors 10 a to 10 c is disposed in the vibration element 4.
  • the notch 40 is a straight line connecting the center of gravity G and the center C. And is arranged on the same side as the center of gravity G with respect to the center C. Thereby, the gravity center G side becomes light, and the gravity center G can be brought close to the center C.
  • the region along the straight line connecting the center of gravity G and the center C means a region on or near the straight line connecting the center of gravity G and the center C. It is preferable that at least a part of the notch 40 overlaps a straight line connecting the center of gravity G and the center C.
  • the present invention is not limited to this, and at least if the notch 40 is positioned in the vicinity of a straight line connecting the center of gravity G and the center C, the center of gravity G and the center C can be brought close to each other.
  • the coil pattern forming unit 20 is located at the center C of the coil pattern forming unit 20 surrounded by the outer edge of the coil pattern 8 in the plan view of the diaphragm 2. It is possible to bring the center of gravity G of the interlayer connection conductors 10a to 10c formed on Thereby, noise generation during vibration of the diaphragm 2 can be suppressed. Therefore, even if the center of gravity of the interlayer connection conductors 10a to 10c is shifted from the center of the coil pattern forming unit 20, it is possible to provide the diaphragm 2 that can suppress generation of noise during vibration and obtain desired vibration characteristics. it can. Moreover, since the notch 40 reduces the weight of the diaphragm 2 itself, the vibration characteristics of the diaphragm 2 are also improved.
  • the center of gravity of the interlayer connection conductors 10a to 10c can be reliably G can be brought close to the center C of the coil pattern forming portion 20.
  • means for bringing the center of gravity G of the interlayer connection conductors 10a to 10c closer to the center C of the coil pattern forming portion 20 is not limited to this.
  • it can be realized by arranging a plurality of notches 40 in a region deviating from a straight line connecting the centroid G and the center C based on the centroid calculation.
  • the notch 40 can be formed in the same manner as the via formation process in the manufacturing process of the diaphragm 2. Thereby, the efficient formation of the notch 40 is realizable.
  • the notch 40 on the inner side of the outermost coil pattern 8 in the thickness direction in the sectional view of the diaphragm 2. Since the amount of displacement on the outer layer side during vibration of the diaphragm 2 is large, the occurrence of breakage or the like in the notch 40 and its surroundings can be suppressed by arranging the notch 40 on the inner layer side.
  • center of gravity G of the interlayer connection conductors 10a to 10c is brought close to the center C of the coil pattern forming portion 20 by combining the first embodiment and the second embodiment and using the center of gravity adjusting member 30 and the notch 40 together. You can also.
  • ⁇ Third Embodiment> 10A is a perspective view schematically showing the structure of the diaphragm according to the third embodiment of the present invention, and the arrangement of the center of gravity adjusting member for bringing the center of gravity of the interlayer connection conductor closer to the center of the coil pattern forming portion.
  • B top view and (c) side sectional view schematically showing
  • the vibration element 4 is configured by laminating a plurality of insulating layers, and each support portion 6 extending from both sides of the vibration element 4.
  • the (support portion elements 6a, 6b) differ from the first embodiment in that they extend from different positions in the thickness direction (lamination direction) in cross-sectional view.
  • the position of the center of gravity G 'of the interlayer connection conductor 10 in the stacking direction in the sectional view of the diaphragm 2 also affects the vibration characteristics of the diaphragm 2. That is, in the sectional view of the diaphragm 2 as well as the planar view of the diaphragm 2, a line extending in the thickness direction (Z-axis direction) passing through the center C of the coil pattern forming portion in the planar view of the diaphragm 2 is the first.
  • the center of gravity G ′ of the interlayer connection conductor 10 is By approaching the intersection C ′ between the first center line M1 and the second center line M2, noise generation during vibration of the vibration element 4 can be suppressed.
  • the base end portions Ka and Kb mean boundary surfaces between the support portions 6 a and 6 b on both sides and the vibration element 4.
  • the base end portions Ka and Kb are indicated by bold lines. More specifically, a line extending in the X-axis direction passing through an intermediate point between the center points kac and Kbc in the Z-axis direction of the base end portions Ka and Kb is the second center line M2.
  • the lines extending in the X-axis direction passing through the center points kac and Kbc are the center lines M2a and M2b of the base ends Ka and Kb, they are located between the center lines M2a and M2b.
  • the line becomes the center line M2.
  • the support portions 6a and 6b on both sides are arranged at diagonal positions of the vibration element 4, but the present invention is not limited to this.
  • a plurality of support portions may be provided at different positions in the Z-axis direction.
  • the line extending in the direction (X-axis direction) orthogonal to the thickness direction passing through the intermediate point of the support portion farthest in the thickness direction (Z-axis direction) is the second center line M2. It becomes.
  • a line extending in the X-axis direction passing through the intermediate point of the outermost support portion on each side is the second center line M2.
  • the interlayer connection conductors 10a to 10c are adjusted. Can be brought closer to the center of the coil pattern forming portion 20 surrounded by the outer edge of the coil pattern 8. Since the specific contents are the same as in the first embodiment, further description is omitted.
  • the interlayer connection conductors 10a to 10c are adjusted. It is possible to bring the center of gravity G ′ closer to the intersection C ′ of the perpendicular M2 passing through the center C of the coil pattern forming portion in a plan view of the diaphragm 2 and the line M1 connecting the base ends Ka and Kb of the support portions 6a and 6b on both sides. it can. Thereby, even if it is a case where the support part 6 (support part element 6a, 6b) is extended from a different position in the lamination direction, noise generation at the time of vibration of the diaphragm 2 can be suppressed.
  • the gravity center adjusting member 30 is a region along a straight line connecting the gravity center G ′ and the intersection C ′, and is opposite to the gravity center G ′ with respect to the intersection C ′. Place on the side. Thereby, the center of gravity G ′ of the interlayer connection conductors 10a to 10c can be reliably brought close to the intersection C ′.
  • the region along the straight line connecting the centroid G ′ and the intersection C ′ means a region on or near the straight line connecting the centroid G ′ and the intersection C ′.
  • the present invention is not limited to this, and at least if the center-of-gravity adjusting member 30 is located in the vicinity of a straight line connecting the center of gravity G ′ and the intersection C ′, the center of gravity G ′ of the interlayer connection conductors 10a to 10c is intersected with the intersection C. Can be close to.
  • the notch 40 can be used to bring the center of gravity G ′ of the interlayer connection conductors 10a to 10c in the stacking direction in a cross-sectional view closer to the intersection C ′. Further, the position of the gravity center G ′ can be adjusted by combining the gravity center adjusting member 30 and the notch 40.
  • the center of gravity adjustment member 30 and the notch 40 are not only arranged in the vicinity of the straight line connecting the center of gravity G ′ and the intersection C ′, but also, for example, a straight line connecting the center of gravity G ′ and the intersection C ′ based on the center of gravity calculation.
  • the center of gravity G ′ can be brought closer to the intersection C ′ by arranging the plurality of center of gravity adjusting members 30 or the notches 40 in a region deviated from the center.

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  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

Afin de fournir une plaque de vibration avec laquelle la génération de bruit pendant une vibration est supprimée et avec laquelle des caractéristiques de vibration souhaitées peuvent être obtenues même lorsqu'un conducteur de connexion intercouches est installé, une plaque de vibration (2) comprend : un élément de vibration (4) dans lequel des motifs de bobine (8a-8c) et des conducteurs de connexion intercouches (10a-10c) sont formés, l'élément de vibration (4) ayant un arbre de bobine dans la direction de l'épaisseur ; et une partie de support (6) permettant de fixer l'élément de vibration (4) à un boîtier, la partie de support (6) s'étendant vers l'extérieur à partir des deux côtés de l'élément de vibration (4), et où dans une vue en plan de la plaque de vibration (2), des éléments de réglage de centre de gravité (30) ou des encoches qui ne sont pas électriquement connectées aux motifs de bobine (8a-8c) et aux conducteurs de connexion intercouches (10a-10c) sont disposés dans l'élément de vibration (4), de telle sorte que le centre de gravité des conducteurs de connexion intercouches (10a-10c), lesquels sont formés dans une section de formation de motif de bobine (20), s'approche du centre de la section de formation de motif de bobine (20), laquelle est entourée par les bords externes des motifs de bobine (8a-8c).
PCT/JP2018/002761 2017-02-06 2018-01-29 Plaque de vibration WO2018143129A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201890000440.9U CN209964281U (zh) 2017-02-06 2018-01-29 振动板

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JP2017-019628 2017-02-06

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WO2018143129A1 true WO2018143129A1 (fr) 2018-08-09

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004180193A (ja) * 2002-11-29 2004-06-24 Hosiden Corp フラットコイルスピーカ用振動板及びそれを用いたフラットコイルスピーカ
WO2006098243A1 (fr) * 2005-03-14 2006-09-21 Matsushita Electric Industrial Co., Ltd. Haut-parleur
JP2007158643A (ja) * 2005-12-05 2007-06-21 Fujitsu Ten Ltd スピーカ、スピーカ駆動装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004180193A (ja) * 2002-11-29 2004-06-24 Hosiden Corp フラットコイルスピーカ用振動板及びそれを用いたフラットコイルスピーカ
WO2006098243A1 (fr) * 2005-03-14 2006-09-21 Matsushita Electric Industrial Co., Ltd. Haut-parleur
JP2007158643A (ja) * 2005-12-05 2007-06-21 Fujitsu Ten Ltd スピーカ、スピーカ駆動装置

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