WO2021064896A1 - Speaker device and method for manufacturing speaker device - Google Patents

Speaker device and method for manufacturing speaker device Download PDF

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Publication number
WO2021064896A1
WO2021064896A1 PCT/JP2019/038925 JP2019038925W WO2021064896A1 WO 2021064896 A1 WO2021064896 A1 WO 2021064896A1 JP 2019038925 W JP2019038925 W JP 2019038925W WO 2021064896 A1 WO2021064896 A1 WO 2021064896A1
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WO
WIPO (PCT)
Prior art keywords
plate portion
front plate
speaker device
rear plate
speaker
Prior art date
Application number
PCT/JP2019/038925
Other languages
French (fr)
Japanese (ja)
Inventor
大橋　力
徳枝 河合
エミ 仁科
Original Assignee
株式会社アクション・リサーチ
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.)
Filing date
Publication date
Application filed by 株式会社アクション・リサーチ filed Critical 株式会社アクション・リサーチ
Priority to PCT/JP2019/038925 priority Critical patent/WO2021064896A1/en
Priority to JP2021550840A priority patent/JPWO2021064896A1/ja
Publication of WO2021064896A1 publication Critical patent/WO2021064896A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers

Definitions

  • the present invention relates to a speaker device and a method for manufacturing the speaker device.
  • a speaker that converts an electric signal into sound and outputs it is known.
  • a speaker for a studio monitor that combines a woofer, a scooka, and a super tweeter that can reproduce various sound ranges from environmental sounds to musical instrument sounds with high fidelity is known (see, for example, Non-Patent Document 1). ..
  • the performance of the speaker depends on the performance of the housing (enclosure) to which the speaker unit is attached, in addition to the performance of the speaker unit used.
  • the speaker housing vibrates due to the reaction of the diaphragm of the speaker unit, and the sound is reflected in the internal air chamber to generate a standing wave. Such vibrations and standing waves may cause deterioration of sound quality.
  • the housing is made of a hard material, and the walls of the housing are thickened to ensure strength, and a sound absorbing material or the like is used. Was absorbing the standing wave. Therefore, speakers with higher performance tend to be larger and heavier, and it has been difficult to reduce the size while maintaining the performance.
  • an object of the present invention is to realize a speaker device capable of reproducing a sound having a wider band frequency with high fidelity in a compact and lightweight configuration. ..
  • the front plate portion provided with one or more speaker units, the rear plate portion facing the front plate portion via the air chamber, and the front plate portion. It has a plurality of surfaces provided between the rear plate portion, includes the front plate portion and the side plate portion that forms the air chamber together with the rear plate portion, and the side plate portion has a thickness of 2 mm or less.
  • a speaker device made of a plate.
  • the side plate portion may form the plurality of surfaces by bending a plate-shaped member.
  • the side plate portion may have a convex reinforcing portion extending in a direction from the front plate portion to the rear plate portion on one or more of the plurality of surfaces.
  • the side plate portion may have a plurality of the convex reinforcing portions on one or a plurality of the plurality of surfaces.
  • the side plate portion may be formed by pressing from a metal plate-like material.
  • a columnar member fixed at the second fixed position may be further provided.
  • the front plate portion and the rear plate portion are arranged in parallel, and the distance between the first fixed position and the second fixed position is equal to the distance between the front plate portion and the rear plate portion. May be good.
  • the front plate portion has a plurality of the first fixing positions for adjusting the fixing position of the columnar member
  • the rear plate portion has a plurality of the said head plate portions for adjusting the fixing position of the columnar member. It may have a plurality of the second fixed positions corresponding to the first fixed position.
  • the front plate portion may further have an opening that penetrates from the first surface on the side where the speaker unit outputs sound to the second surface on the side opposite to the first surface.
  • the speaker unit may include a piezoelectric actuator.
  • the piezoelectric actuator is fixed to a through hole provided in the front plate portion, and at least a part of the piezoelectric actuator is placed on a second surface opposite to the first surface on the side where the piezoelectric actuator outputs sound. It may further have a protective portion to cover.
  • the front plate portion provided with one or more speaker units, the rear plate portion facing the front plate portion via the air chamber, and the front plate portion. It has a plurality of surfaces provided between the rear plate portion, includes the front plate portion and the side plate portion that forms the air chamber together with the rear plate portion, and the side plate portion is the plurality of surfaces.
  • a speaker device having a convex reinforcing portion extending in a direction from the front plate portion to the rear plate portion on two or more of the surfaces.
  • the front plate portion provided with one or more speaker units, the rear plate portion facing the front plate portion via the air chamber, and the front plate portion. It has a plurality of surfaces provided between the rear plate portion, includes the front plate portion and the side plate portion that forms the air chamber together with the rear plate portion, and from the front plate portion to the rear plate portion.
  • a columnar structure that extends in a direction parallel to the direction in which one end is fixed at the first fixed position of the front plate portion and the other end is fixed at the second fixed position of the rear plate portion.
  • a speaker device further comprising a member.
  • a step of forming a front plate portion and a rear plate portion provided at a position facing the front plate portion via an air chamber, and a press working from a metal plate-like material are performed.
  • a method for manufacturing a speaker device comprising a step of attaching one or a plurality of speaker units to the front plate portion and a step of attaching the front plate portion and the rear plate portion to the side plate portion.
  • a convex reinforcing portion extending in a direction from the front plate portion toward the rear plate portion on one or more of the plurality of surfaces of the side plate portion by press working. May be formed.
  • a speaker device capable of reproducing a sound having a wider band frequency with high fidelity can be realized with a compact and lightweight configuration.
  • a configuration example of the speaker device 100 according to the present embodiment is shown.
  • a configuration example of a cross section of the speaker device 100 according to the present embodiment is shown.
  • the first example of the detection result of the sound output by the speaker apparatus 100 which concerns on this embodiment is shown.
  • a second example of the sound detection result output by the speaker device 100 according to the present embodiment is shown.
  • An example of the manufacturing flow of the speaker apparatus 100 according to this embodiment is shown.
  • FIG. 1 shows a configuration example of the speaker device 100 according to the present embodiment.
  • the speaker device 100 converts the input signal into sound and outputs it. In other words, the speaker device 100 converts electrical vibration into physical vibration and outputs it.
  • the speaker device 100 reduces the occurrence of waveform distortion, noise, etc., and raises the sound of a wider band frequency. Reproduce with fidelity.
  • FIG. 1 shows an example of the speaker device 100 for the left side when viewed from the surface for outputting sound and the speaker device 100R for the right side when viewed from the side opposite to the surface for outputting sound.
  • the speaker device 100R for the right side and the speaker device 100L for the left side may have the same shape, and may have a symmetrical shape instead.
  • Each speaker device 100 includes a front plate portion 110, a rear plate portion 120, and a side plate portion 130.
  • the front plate portion 110 is provided with one or more speaker units 140.
  • FIG. 1 shows an example in which the speaker unit 140 includes a woofer 142, a scooka 144, and a tweeter 146. It is desirable that the speaker unit 140 is configured so as to be able to reproduce sound having a frequency in the audible band as a whole. Further, it is more desirable that the speaker unit 140 is configured to be able to reproduce a sound including a frequency in the audible band and a frequency higher than the audible band as a whole.
  • the surface on the side where the speaker unit 140 outputs sound is the first surface, and the surface on the side opposite to the first surface is the second surface.
  • the front plate portion 110 further has an opening 112 that penetrates from the first surface to the second surface.
  • a plurality of openings 112 may be formed in the front plate portion 110. Since the opening 112 is formed in the front plate portion 110, the speaker device 100 is also configured as a bass reflex type speaker that amplifies a predetermined low frequency band. Further, the front plate portion 110 has one or a plurality of first fixed positions 114. The first fixed position 114 will be described later.
  • the rear plate portion 120 faces the front plate portion 110 via the air chamber.
  • the air chamber is used as the internal space of the speaker device 100.
  • the shape of the outer circumference of the rear plate portion 120 is, for example, the same shape as that of the front plate portion 110.
  • the front plate portion 110 and the rear plate portion 120 are formed of plate-shaped members. Further, the rear plate portion 120 has one or a plurality of second fixed positions 122. The second fixed position 122 will be described later.
  • the rear plate portion 120 and the front plate portion 110 may be arranged in parallel, or instead, the rear plate portion 120 and the front plate portion 110 may be inclined to face each other at a predetermined angle.
  • the side plate portion 130 has a plurality of surfaces provided between the front plate portion 110 and the rear plate portion 120, and forms an air chamber together with the front plate portion 110 and the rear plate portion 120.
  • the side plate portion 130 is formed by bending a plate-shaped member to form a plurality of surfaces.
  • FIG. 1 shows an example in which the side plate portion 130 has four surfaces and is combined with the front plate portion 110 and the rear plate portion 120 to form a cubic air chamber.
  • the side plate portion 130 is provided with, for example, an attachment portion to which the front plate portion 110 and the rear plate portion 120 are attached. Note that FIG.
  • the number of surfaces on which the side plate portion 130 forms an air chamber is a number corresponding to the quadrangular shape of the front plate portion 110 and the rear plate portion 120, but the number is limited to this. There is nothing.
  • the shape of the side plate 130 may be formed independently of the shape of the front plate 110 and / or the rear plate 120, and in this case, the number of surfaces of the side plate 130 is also the front plate 110 and / or the rear. It may be irrelevant to the shape of the plate portion 120.
  • the side plate portion 130 is formed of a plate-shaped member.
  • the side plate portion 130 is formed from, for example, a metal plate-like material by press working or the like.
  • the side plate portion 130 may be formed by bending a plate-shaped member.
  • the front plate portion 110, the rear plate portion 120, and the side plate portion 130 are made of, for example, a metal material.
  • the front plate portion 110, the rear plate portion 120, and the side plate portion 130 may be made of a material such as wood or resin.
  • the front plate portion 110, the rear plate portion 120, and the side plate portion 130 are formed to be thin enough to resonate and vibrate at a frequency included in the sound generated by the speaker device 100.
  • the side plate portion 130 is formed with a thin plate thickness that can be formed by bending. Further, it is desirable that the side plate portion 130 is formed by bending by press working.
  • the plate thickness that can be formed by bending by press working or the like is, for example, 0.1 mm or more and 10 mm or less.
  • the thickness of the side plate portion 130 may be 0.3 mm or more and 5 mm or less. Further, the thickness of the side plate portion 130 may be 0.5 mm or more and 3 mm or less.
  • the side plate portion 130 is formed of a plate having a thickness of 2 mm or less. It is desirable that at least a part of the front plate portion 110 and the rear plate portion 120 is formed to have a thickness equivalent to the thickness of such a side plate portion 130.
  • the speaker device 100 according to the above embodiment is different from the conventional speaker, and the side plate portion 130 is made thin enough to vibrate by resonance. Further, the front plate portion 110 and the rear plate portion 120 may be similarly thinned. The cross-sectional structure of the housing of the speaker device 100 will be described below.
  • FIG. 2 shows an example of a cross-sectional perspective view of the speaker device 100 according to the present embodiment.
  • FIG. 2 shows an example of a cross-sectional perspective view when the housing of the speaker device 100 is cut by the surface including the AA'line shown in FIG.
  • the side plate portion 130 has a convex reinforcing portion 132 extending in a direction from the front plate portion 110 to the rear plate portion 120 on one or more of the plurality of surfaces. Further, the side plate portion 130 may have a plurality of such convex reinforcing portions 132 on one or a plurality of surfaces among the plurality of surfaces.
  • FIG. 2 shows an example in which the side plate portion 130 has a plurality of convex reinforcing portions 132 on each of the four surfaces forming the air chamber.
  • the convex reinforcing portion 132 functions as a reinforcing member for reinforcing the plate-shaped member, and is a convex member provided in a direction substantially perpendicular to the plane of the reinforcing member.
  • the convex reinforcing portion 132 is also formed by press working.
  • one convex reinforcing portion 132 is formed on one surface.
  • the strength of the side plate portion 130 can be sufficiently maintained.
  • the convex reinforcing portion 132 further has a function of diffusing the vibration of the sound generated by the speaker device 100 on the surface on which the convex reinforcing portion 132 is provided.
  • a convex reinforcing portion 132 resembles the function of a bus bar or the like provided on, for example, a violin, a cello, or the like.
  • the convex reinforcing portion 132 having such a function is formed on two or more of the plurality of surfaces forming the air chamber.
  • the convex reinforcing portion 132 may be formed on all the surfaces of the plurality of surfaces forming the air chamber. Further, it is more desirable that a plurality of convex reinforcing portions 132 are formed on at least one surface.
  • the side plate portion 130 is provided with a plurality of convex reinforcing portions 132 on a plurality of surfaces, which is sufficient in number or more to maintain the strength. As a result, the vibration of the sound can be diffused to the entire housing including the side plate portion 130.
  • the convex reinforcing portion 132 may be provided on the front plate portion 110 and / or the rear plate portion 120.
  • the speaker device 100 further includes a columnar member 150.
  • the columnar member 150 extends in a direction parallel to the direction from the front plate portion 110 toward the rear plate portion 120, and one end thereof is fixed to the first fixed position 114 of the front plate portion 110, and the other end portion Is fixed at the second fixed position 122 of the rear plate portion 120.
  • the first fixing position 114 and the second fixing position 122 may be, for example, through holes or the like, and in this case, the columnar member 150 is fixed by screws or the like.
  • the columnar member 150 has a function of transmitting the vibration of the front plate portion 110 to the rear plate portion 120 and / or transmitting the vibration of the rear plate portion 120 to the front plate portion 110. Since the speaker device 100 has the columnar member 150, the vibration generated in the front plate portion 110 or the rear plate portion 120 is transmitted to the other, so that the vibration phases of the front plate portion 110 and the rear plate portion 120 are changed and reproduced. You can adjust the tone and volume of the sound. For example, in a conventional speaker, it is possible to reduce the vibration of the housing whose phase is inverted, which is generated by the reaction of the diaphragm of the speaker unit. Further, for example, it can be optimized for a tone color and volume suitable for the sound to be reproduced. As a result, the speaker device 100 can generate powerful sound with better reproducibility as compared with, for example, a conventional speaker of the same size.
  • the front plate portion 110 is provided with a plurality of first fixed positions 114 for adjusting the fixed positions of the columnar member 150.
  • the rear plate portion 120 is provided with a plurality of second fixed positions 122 corresponding to the plurality of first fixed positions 114 for adjusting the fixed positions of the columnar member 150.
  • the columnar member 150 may be attached with a screw with a spring or the like. Further, the columnar member 150 may be configured so that the length can be adjusted. As a result, the columnar member 150 is attached to the speaker device 100 as a member whose tension can be adjusted. A plurality of columnar members 150 may be provided in one speaker device 100.
  • 1 and 2 show an example in which the front plate portion 110 and the rear plate portion 120 are arranged in parallel.
  • the distance between the first fixed position 114 and the second fixed position 122 is substantially equal to the distance between the front plate portion 110 and the rear plate portion 120.
  • the columnar member 150 has a length substantially equal to the distance between the front plate portion 110 and the rear plate portion 120, and connects the front plate portion 110 and the rear plate portion 120.
  • the speaker device 100 is formed with a thickness such that the front plate portion 110, the rear plate portion 120, and the side plate portion 130 are formed by press working, and thus is unique to the housing. Generate vibration. Further, since the speaker device 100 has a convex reinforcing portion 132 on each of the surfaces forming the air chamber, such natural vibration is generated in the entire housing. Since the speaker device 100 is further provided with a columnar member 150 connecting the front plate portion 110 and the rear plate portion 120, it is suitable for reproducing a sound having a natural vibration such as a sound box such as a violin or a cello. It can be a housing.
  • Such a speaker device 100 operates so that the entire body including the housing sounds like a musical instrument based on the sound vibration driven by the speaker unit 140. In this way, since the speaker device 100 makes the entire device sound like a musical instrument, it does not have to function to suppress vibration or the like of a specific frequency component like a conventional speaker. Therefore, the speaker device 100 can reproduce a sound faithful to the original sound without increasing the size of the housing. Further, the speaker device 100 preferably has a thin housing in order to vibrate the housing positively, whereby the weight of the entire housing can be reduced.
  • FIG. 3 shows a first example of the sound detection result output by the speaker device 100 according to the present embodiment.
  • FIG. 3 shows an example of the result of measuring the vibration of the front plate portion 110 by bringing the microphone into contact with the front plate portion 110 of the speaker device 100.
  • the horizontal axis of FIG. 3 indicates the frequency, and the vertical axis indicates the relative value of the vibration intensity on the logarithmic axis.
  • FIG. 3 shows the detection result of the sound output by a known speaker as a comparison target.
  • the speaker has two 36 cm subwoofers, two 25 cm woofers, one horn-type tweeter, and two diamond domes in a housing having a main body size of 1200 mm (width) x 950 mm (height) x 582 mm (depth).
  • a super tweeter is provided, and the total weight per channel (one channel) is 200 kg or more, and the details are published in Non-Patent Document 1.
  • FIG. 4 shows a second example of the sound detection result output by the speaker device 100 according to the present embodiment.
  • FIG. 4 shows an example of the result of measuring the frequency characteristics by detecting the sound at a position approximately 1 m away from the speaker device 100.
  • the horizontal axis of FIG. 4 indicates the frequency, and the vertical axis indicates the relative value of the signal strength of the voice signal on the logarithmic axis.
  • the results of performing the same measurement using the same known speaker as in FIG. 3 are shown as comparison targets.
  • FIGS. 3 and 4 show an example of the measurement result of the speaker device 100 formed with a volume of about 1/100 or less and a weight of about 1/30 or less as compared with a large and heavy known speaker. From FIG. 3, it can be seen that the vibration intensity of the housing surface is about 40 dB larger than that of the known speaker, despite the small and lightweight speaker device 100. Further, from FIGS. 3 and 4, the spectral shape of the frequency characteristic of the speaker device 100 is about the same as that of a high-performance speaker for a studio monitor, and the original sound can be faithfully reproduced to the same extent as a known speaker. You can also see that.
  • the speaker device 100 since the thin side plate portion 130 that can be formed by bending vibrates greatly and can reverberate in the entire housing, it can be seen that the frequency band component effective as music can be output beautifully. In this way, by utilizing the resonance vibration of the housing itself, the speaker device 100 can be a large housing having a volume of several tens of times or more even if it is a small housing such as a bookshelf type. It can reproduce bass sounds comparable to subwoofers.
  • the speaker device 100 may further include an amplifier circuit for amplifying an electric signal, a filter circuit for reducing unnecessary signal components, and the like.
  • one or a plurality of speaker units 140 provided in the speaker device 100 may include a piezoelectric actuator.
  • the piezoelectric actuator is included in the speaker unit 140 as a tweeter 146.
  • the speaker device 100 can be configured as a smaller and lighter device.
  • by providing the piezoelectric actuator it is possible to reproduce a sound having a frequency higher than that in the audible band.
  • FIGS. 3 and 4 are examples of sounds output from the speaker device 100 provided with such an amplifier circuit, a filter circuit, and a piezoelectric actuator.
  • the speaker device 100 naturally vibrates the housing in response to the reproduced sound, the pressure inside the air chamber tends to be higher than the pressure inside the air chamber of a known speaker. .. Due to such pressure, unnecessary resonance may occur in at least a part of the speaker unit 140. Therefore, in order to reduce such resonance, it is desirable that the speaker unit 140 is further provided with a cover member that covers at least a part of the speaker unit 140.
  • the piezoelectric actuator when the speaker unit 140 is provided with a piezoelectric actuator, the piezoelectric actuator is small and lightweight, so that it may physically resonate according to the pressure in the air chamber. Therefore, while the piezoelectric actuator is fixed to the through hole provided in the front plate portion 110, at least a part of the piezoelectric actuator is placed on the second surface opposite to the first surface on the side where the piezoelectric actuator outputs sound. It may further have a protective portion to cover. As a result, it is possible to prevent the pressure in the air chamber from being directly transmitted to the piezoelectric actuator and reduce the occurrence of an unnecessary resonance phenomenon.
  • the speaker device 100 according to the present embodiment described above can be easily assembled and manufactured because the side plate portion 130, which is a part of the housing, can be formed from a single plate-shaped material.
  • FIG. 5 shows an example of the manufacturing flow of the speaker device 100 according to the present embodiment.
  • the front plate portion 110 and the rear plate portion 120 provided at a position facing the front plate portion 110 via the air chamber are formed (S410).
  • the front plate portion 110 and the rear plate portion 120 may have the same thickness as the side plate portion 130, and may be formed to be thicker than the thickness of the side plate portion 130 instead.
  • the front plate portion 110 and the rear plate portion 120 have a thickness of about 1 cm as an example.
  • the front plate portion 110 is formed with a through hole to which the speaker unit 140 is attached, an opening 112 for forming a bass reflex type, one or a plurality of first fixed positions 114, a screw hole for attachment, and the like. Further, the rear plate portion 120 is formed with one or a plurality of second fixed positions 122, screw holes for attachment, and the like.
  • a metal plate-like material is pressed to form a plurality of surfaces provided between the front plate portion 110 and the rear plate portion 120, and an air chamber is formed together with the front plate portion 110 and the rear plate portion 120.
  • the side plate portion 130 is bent and formed (S420).
  • the convex reinforcing portion 132 extending in the direction from the front plate portion 110 to the rear plate portion 120 is formed on one or more of the plurality of surfaces of the side plate portion 130 by press working.
  • the side plate portion 130 has a thickness of about 2 mm as an example.
  • the press processing is, for example, a processing such as a squeeze press that three-dimensionally deforms one metal plate.
  • the metal plate includes, for example, a material such as aluminum, stainless steel, or copper.
  • the metal plate-like material is, for example, a plate having a thickness of about 2 mm or less.
  • the side plate portion 130 having the convex reinforcing portion 132 is formed by performing such press working.
  • the side plate portion 130 can retain the stress-strain generated by processing, for example, and when formed as the speaker device 100, the natural vibration of the speaker device 100 can be easily generated.
  • members such as the side plate portion 130 can be automatically mass-produced.
  • An example in which the convex reinforcing portion 132 is formed on the surface of the side plate portion 130 facing the air chamber has been described, but instead of or in addition to this, the convex reinforcing portion 132 is formed on the side plate portion 130. It may be formed on a surface facing the outside.
  • one or more speaker units 140 are attached to the front plate portion 110 (S430).
  • another member such as a columnar member 150 may be attached to the front plate portion 110.
  • the order of the flows from S410 to S430 may be changed. For example, S420, S410, and S430 may be executed in this order, and instead, S410, S430, and S420 may be executed in this order.
  • the front plate portion 110 and the rear plate portion 120 are attached to the side plate portion 130 (S440).
  • the columnar member 150 may be attached to predetermined positions of the front plate portion 110 and the rear plate portion 120.
  • other members such as an amplifier circuit and a filter circuit may be further attached to the inside of the side plate portion 130.
  • the speaker device 100 according to the present embodiment can be easily manufactured.
  • the speaker device 100 has described an example in which the speaker unit 140 is attached to the front plate portion 110, but the present invention is not limited to this.
  • the speaker unit 140 may be attached to the side plate portion 130.
  • the shape of the speaker device 100 has been described as the shape of a cube, the present invention is not limited to this.
  • the speaker device 100 may have a complicated shape that forms an air chamber with more than six surfaces, or may have a curved surface or the like.
  • the speaker unit 140 may have a configuration of only the woofer 142, for example, and may have a configuration of only the woofer 142 and the scooka 144 instead.
  • the speaker device 100 has been described as a bass reflex type configuration example having an opening 112, but the present invention is not limited thereto.
  • the speaker device 100 may not have the opening 112.
  • the speaker device 100 according to the present embodiment described above has described an example in which the convex reinforcing portion 132 and the columnar member 150 are provided, but the present invention is not limited thereto.
  • the speaker device 100 may be provided with either one of the convex reinforcing portion 132 and the columnar member 150.
  • the present invention has been described above using the embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments, and various modifications and changes can be made within the scope of the gist thereof. is there.
  • the specific embodiment of the distribution / integration of the device is not limited to the above embodiment, and all or a part thereof may be functionally or physically distributed / integrated in an arbitrary unit. Can be done.
  • Also included in the embodiments of the present invention are new embodiments resulting from any combination of the plurality of embodiments. The effect of the new embodiment produced by the combination has the effect of the original embodiment together.

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  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
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  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

The present invention enables the realization of a lighter and more compact speaker device that is capable of high fidelity reproduction of a wider range of frequencies of sound. Provided is a speaker device comprising: a front panel on which one or more speaker units are provided; a rear panel opposing the front panel with an air chamber therebetween; and a side panel that comprises a plurality of faces provided between the front panel and the rear panel, and that, along with the front panel and the rear panel, forms the air chamber, wherein the side panel comprises, on at least two of the plurality of faces thereof, projecting reinforcing parts that extend in the direction from the front panel toward the rear panel. Also provided is a method for manufacturing the speaker device.

Description

スピーカ装置およびスピーカ装置の製造方法Speaker device and manufacturing method of speaker device
　本発明は、スピーカ装置およびスピーカ装置の製造方法に関する。 The present invention relates to a speaker device and a method for manufacturing the speaker device.
　従来、電気信号を音に変換して出力するスピーカが知られている。特に、環境音から楽器音までの種々の音域を高い忠実度で再生できる、ウーファ、スコーカ、およびスーパートゥイータを組み合わせたスタジオモニタ用のスピーカが知られている（例えば、非特許文献１を参照）。 Conventionally, a speaker that converts an electric signal into sound and outputs it is known. In particular, a speaker for a studio monitor that combines a woofer, a scooka, and a super tweeter that can reproduce various sound ranges from environmental sounds to musical instrument sounds with high fidelity is known (see, for example, Non-Patent Document 1). ..
　このようなスピーカは、より広帯域な周波数の音を高い忠実度で再現できることが望ましい。スピーカの性能は、用いるスピーカユニットの性能に加えて、当該スピーカユニットが取り付けられる筐体（エンクロージャ）の性能等に依存する。スピーカの筐体は、スピーカユニットの振動板の反作用によって振動し、また、内部の空気室において音が反射して定常波が発生する。このような振動および定常波は、音質を悪化させる要因となることがあり、従来、筐体を固い材質で形成し、また、筐体の壁部等を厚くして強度を確保し、吸音材等で定常波を吸収していた。したがって、より高い性能のスピーカは、より大きく、より重くなる傾向にあり、性能を保持したまま小型化することは困難であった。 It is desirable that such a speaker can reproduce sound with a wider band frequency with high fidelity. The performance of the speaker depends on the performance of the housing (enclosure) to which the speaker unit is attached, in addition to the performance of the speaker unit used. The speaker housing vibrates due to the reaction of the diaphragm of the speaker unit, and the sound is reflected in the internal air chamber to generate a standing wave. Such vibrations and standing waves may cause deterioration of sound quality. Conventionally, the housing is made of a hard material, and the walls of the housing are thickened to ensure strength, and a sound absorbing material or the like is used. Was absorbing the standing wave. Therefore, speakers with higher performance tend to be larger and heavier, and it has been difficult to reduce the size while maintaining the performance.
　そこで、本発明はこれらの点に鑑みてなされたものであり、より広帯域な周波数の音を高い忠実度で再現できるスピーカ装置を、小型かつ軽量な構成で実現できるようにすることを目的とする。 Therefore, the present invention has been made in view of these points, and an object of the present invention is to realize a speaker device capable of reproducing a sound having a wider band frequency with high fidelity in a compact and lightweight configuration. ..
　本発明の第１の態様においては、１または複数のスピーカユニットが設けられている前板部と、空気室を介して前記前板部に対向している後板部と、前記前板部と前記後板部との間に設けられた複数の面を有し、前記前板部および前記後板部とともに前記空気室を形成する側板部とを備え、前記側板部は、２ｍｍ以下の厚みの板で形成されている、スピーカ装置を提供する。 In the first aspect of the present invention, the front plate portion provided with one or more speaker units, the rear plate portion facing the front plate portion via the air chamber, and the front plate portion. It has a plurality of surfaces provided between the rear plate portion, includes the front plate portion and the side plate portion that forms the air chamber together with the rear plate portion, and the side plate portion has a thickness of 2 mm or less. Provided is a speaker device made of a plate.
　前記側板部は、板状の部材が折り曲げられて前記複数の面を形成していてもよい。前記側板部は、前記複数の面のうち１または２以上の面において、前記前板部から前記後板部に向かう方向に延伸する凸状補強部を有してもよい。 The side plate portion may form the plurality of surfaces by bending a plate-shaped member. The side plate portion may have a convex reinforcing portion extending in a direction from the front plate portion to the rear plate portion on one or more of the plurality of surfaces.
　前記側板部は、前記複数の面のうち１または複数の面に、複数の前記凸状補強部を有してもよい。前記側板部は、金属の板状材料からプレス加工によって形成されていてもよい。 The side plate portion may have a plurality of the convex reinforcing portions on one or a plurality of the plurality of surfaces. The side plate portion may be formed by pressing from a metal plate-like material.
　前記前板部から前記後板部に向かう方向と平行な方向に延伸し、一方の端部が前記前板部の第１固定位置に固定されており、他方の端部が前記後板部の第２固定位置に固定されている柱状部材を更に備えてもよい。 It extends in a direction parallel to the direction from the front plate portion to the rear plate portion, one end portion is fixed to the first fixed position of the front plate portion, and the other end portion is the rear plate portion. A columnar member fixed at the second fixed position may be further provided.
　前記前板部および前記後板部は平行に配置されており、前記第１固定位置および前記第２固定位置の間の距離は、前記前板部および前記後板部の間の距離に等しくてもよい。 The front plate portion and the rear plate portion are arranged in parallel, and the distance between the first fixed position and the second fixed position is equal to the distance between the front plate portion and the rear plate portion. May be good.
　前記前板部は、前記柱状部材の固定位置を調節するための、複数の前記第１固定位置を有し、前記後板部は、前記柱状部材の固定位置を調節するための、複数の前記第１固定位置に対応する複数の前記第２固定位置を有してもよい。 The front plate portion has a plurality of the first fixing positions for adjusting the fixing position of the columnar member, and the rear plate portion has a plurality of the said head plate portions for adjusting the fixing position of the columnar member. It may have a plurality of the second fixed positions corresponding to the first fixed position.
　前記前板部は、１または複数の前記スピーカユニットが音声を出力する側の第１面から、前記第１面と反対側の第２面まで貫通する開口部を更に有してもよい。１または複数の前記スピーカユニットには、圧電アクチュエータが含まれていてもよい。 The front plate portion may further have an opening that penetrates from the first surface on the side where the speaker unit outputs sound to the second surface on the side opposite to the first surface. The speaker unit may include a piezoelectric actuator.
　前記圧電アクチュエータは、前記前板部に設けられた貫通口に固定され、前記圧電アクチュエータが音声を出力する側の第１面とは反対側の第２面において、前記圧電アクチュエータの少なくとも一部を覆う保護部を更に有してもよい。 The piezoelectric actuator is fixed to a through hole provided in the front plate portion, and at least a part of the piezoelectric actuator is placed on a second surface opposite to the first surface on the side where the piezoelectric actuator outputs sound. It may further have a protective portion to cover.
　本発明の第２の態様においては、１または複数のスピーカユニットが設けられている前板部と、空気室を介して前記前板部に対向している後板部と、前記前板部と前記後板部との間に設けられた複数の面を有し、前記前板部および前記後板部とともに前記空気室を形成する側板部とを備え、前記側板部は、前記複数の面のうち２以上の面において、前記前板部から前記後板部に向かう方向に延伸する凸状補強部を有する、スピーカ装置を提供する。 In the second aspect of the present invention, the front plate portion provided with one or more speaker units, the rear plate portion facing the front plate portion via the air chamber, and the front plate portion. It has a plurality of surfaces provided between the rear plate portion, includes the front plate portion and the side plate portion that forms the air chamber together with the rear plate portion, and the side plate portion is the plurality of surfaces. Provided is a speaker device having a convex reinforcing portion extending in a direction from the front plate portion to the rear plate portion on two or more of the surfaces.
　本発明の第３の態様においては、１または複数のスピーカユニットが設けられている前板部と、空気室を介して前記前板部に対向している後板部と、前記前板部と前記後板部との間に設けられた複数の面を有し、前記前板部および前記後板部とともに前記空気室を形成する側板部とを備え、前記前板部から前記後板部に向かう方向と平行な方向に延伸し、一方の端部が前記前板部の第１固定位置に固定されており、他方の端部が前記後板部の第２固定位置に固定されている柱状部材を更に備える、スピーカ装置を提供する。 In the third aspect of the present invention, the front plate portion provided with one or more speaker units, the rear plate portion facing the front plate portion via the air chamber, and the front plate portion. It has a plurality of surfaces provided between the rear plate portion, includes the front plate portion and the side plate portion that forms the air chamber together with the rear plate portion, and from the front plate portion to the rear plate portion. A columnar structure that extends in a direction parallel to the direction in which one end is fixed at the first fixed position of the front plate portion and the other end is fixed at the second fixed position of the rear plate portion. Provided is a speaker device further comprising a member.
　本発明の第４の態様においては、前板部と、空気室を介して前記前板部に対向する位置に設けられる後板部とを形成するステップと、金属の板状材料からプレス加工によって、前記前板部と前記後板部との間に設けられた複数の面を有し、前記前板部および前記後板部とともに前記空気室を形成するための側板部を形成するステップと、前記前板部に１または複数のスピーカユニットを取り付けるステップと、前記側板部に前記前板部および前記後板部を取り付けるステップとを備える、スピーカ装置の製造方法を提供する。 In the fourth aspect of the present invention, a step of forming a front plate portion and a rear plate portion provided at a position facing the front plate portion via an air chamber, and a press working from a metal plate-like material are performed. A step of forming a side plate portion for forming the air chamber together with the front plate portion and the rear plate portion having a plurality of surfaces provided between the front plate portion and the rear plate portion. Provided is a method for manufacturing a speaker device, comprising a step of attaching one or a plurality of speaker units to the front plate portion and a step of attaching the front plate portion and the rear plate portion to the side plate portion.
　前記側板部を形成するステップにおいて、プレス加工によって、前記側板部の前記複数の面のうち１または２以上の面において、前記前板部から前記後板部に向かう方向に延伸する凸状補強部を形成してもよい。 In the step of forming the side plate portion, a convex reinforcing portion extending in a direction from the front plate portion toward the rear plate portion on one or more of the plurality of surfaces of the side plate portion by press working. May be formed.
　本発明によれば、より広帯域な周波数の音を高い忠実度で再現できるスピーカ装置を小型かつ軽量な構成で実現できるという効果を奏する。 According to the present invention, there is an effect that a speaker device capable of reproducing a sound having a wider band frequency with high fidelity can be realized with a compact and lightweight configuration.
本実施形態に係るスピーカ装置１００の構成例を示す。A configuration example of the speaker device 100 according to the present embodiment is shown. 本実施形態に係るスピーカ装置１００の断面の構成例を示す。A configuration example of a cross section of the speaker device 100 according to the present embodiment is shown. 本実施形態に係るスピーカ装置１００が出力した音の検出結果の第１例を示す。The first example of the detection result of the sound output by the speaker apparatus 100 which concerns on this embodiment is shown. 本実施形態に係るスピーカ装置１００が出力した音の検出結果の第２例を示す。A second example of the sound detection result output by the speaker device 100 according to the present embodiment is shown. 本実施形態に係るスピーカ装置１００の製造フローの一例を示す。An example of the manufacturing flow of the speaker apparatus 100 according to this embodiment is shown.
＜スピーカ装置１００の構成例＞
　図１は、本実施形態に係るスピーカ装置１００の構成例を示す。スピーカ装置１００は、入力する信号を音に変換して出力する。言い換えると、スピーカ装置１００は、電気的な振動を物理的な振動に変換して出力する。スピーカ装置１００は、入力する電気信号の波形と出力された音の波形とを比較した場合に、波形の歪等の発生、雑音等の混入等を低減させて、より広帯域な周波数の音を高い忠実度で再現する。 <Configuration example of speaker device 100>
FIG. 1 shows a configuration example of the speaker device 100 according to the present embodiment. The speaker device 100 converts the input signal into sound and outputs it. In other words, the speaker device 100 converts electrical vibration into physical vibration and outputs it. When the waveform of the input electric signal and the waveform of the output sound are compared, the speaker device 100 reduces the occurrence of waveform distortion, noise, etc., and raises the sound of a wider band frequency. Reproduce with fidelity.
　図１は、音を出力する面から見た左側用のスピーカ装置１００Ｌと、音を出力する面とは反対側から見た右側用のスピーカ装置１００Ｒとを、それぞれスピーカ装置１００の例として示す。右側用のスピーカ装置１００Ｒおよび左側用のスピーカ装置１００Ｌは、同様の形状を有してよく、これに代えて、左右対称の形状を有していてもよい。それぞれのスピーカ装置１００は、前板部１１０と、後板部１２０と、側板部１３０とを備える。 FIG. 1 shows an example of the speaker device 100 for the left side when viewed from the surface for outputting sound and the speaker device 100R for the right side when viewed from the side opposite to the surface for outputting sound. The speaker device 100R for the right side and the speaker device 100L for the left side may have the same shape, and may have a symmetrical shape instead. Each speaker device 100 includes a front plate portion 110, a rear plate portion 120, and a side plate portion 130.
　前板部１１０には、１または複数のスピーカユニット１４０が設けられている。図１は、スピーカユニット１４０が、ウーファ１４２、スコーカ１４４、トゥイータ１４６を含む例を示す。スピーカユニット１４０は、全体で可聴帯域の周波数の音を再現可能に構成されていることが望ましい。また、スピーカユニット１４０は、全体で可聴帯域の周波数と可聴帯域よりも高い周波数とを含む音を再現可能に構成されていることがより望ましい。 The front plate portion 110 is provided with one or more speaker units 140. FIG. 1 shows an example in which the speaker unit 140 includes a woofer 142, a scooka 144, and a tweeter 146. It is desirable that the speaker unit 140 is configured so as to be able to reproduce sound having a frequency in the audible band as a whole. Further, it is more desirable that the speaker unit 140 is configured to be able to reproduce a sound including a frequency in the audible band and a frequency higher than the audible band as a whole.
　前板部１１０において、スピーカユニット１４０が音声を出力する側の面を第１面とし、第１面とは反対側の面を第２面とする。前板部１１０は、このような第１面から第２面まで貫通する開口部１１２を更に有する。前板部１１０には、複数の開口部１１２が形成されていてもよい。前板部１１０に開口部１１２が形成されていることにより、スピーカ装置１００は、予め定められた低周波帯域を増幅するバスレフレックス型のスピーカとしても構成される。また、前板部１１０は、１または複数の第１固定位置１１４を有する。第１固定位置１１４については後述する。 In the front plate portion 110, the surface on the side where the speaker unit 140 outputs sound is the first surface, and the surface on the side opposite to the first surface is the second surface. The front plate portion 110 further has an opening 112 that penetrates from the first surface to the second surface. A plurality of openings 112 may be formed in the front plate portion 110. Since the opening 112 is formed in the front plate portion 110, the speaker device 100 is also configured as a bass reflex type speaker that amplifies a predetermined low frequency band. Further, the front plate portion 110 has one or a plurality of first fixed positions 114. The first fixed position 114 will be described later.
　後板部１２０は、空気室を介して前板部１１０に対向している。本実施形態において、空気室をスピーカ装置１００の内部空間とする。後板部１２０の外周の形状は、一例として、前板部１１０と同様の形状である。前板部１１０および後板部１２０は、板状の部材から形成されている。また、後板部１２０は、１または複数の第２固定位置１２２を有する。第２固定位置１２２については後述する。後板部１２０および前板部１１０は、平行に配置されていてもよく、これに代えて、予め定められた角度で傾斜して対向してもよい。 The rear plate portion 120 faces the front plate portion 110 via the air chamber. In the present embodiment, the air chamber is used as the internal space of the speaker device 100. The shape of the outer circumference of the rear plate portion 120 is, for example, the same shape as that of the front plate portion 110. The front plate portion 110 and the rear plate portion 120 are formed of plate-shaped members. Further, the rear plate portion 120 has one or a plurality of second fixed positions 122. The second fixed position 122 will be described later. The rear plate portion 120 and the front plate portion 110 may be arranged in parallel, or instead, the rear plate portion 120 and the front plate portion 110 may be inclined to face each other at a predetermined angle.
　側板部１３０は、前板部１１０と後板部１２０との間に設けられた複数の面を有し、前板部１１０および後板部１２０とともに空気室を形成する。側板部１３０は、板状の部材が折り曲げられて複数の面を形成している。図１は、側板部１３０が４つの面を有し、前板部１１０および後板部１２０と組み合わされて立方体の空気室を形成している例を示す。側板部１３０には、例えば、前板部１１０および後板部１２０がそれぞれ取り付けられる取り付け部が設けられている。なお、図１は、側板部１３０が空気室を形成する面の数は、前板部１１０および後板部１２０の四角形の形状に対応する数となっている例を示すが、これに限定されることはない。側板部１３０の形状は、前板部１１０および／または後板部１２０の形状とは無関係に形成されていてもよく、この場合、側板部１３０の面の数も前板部１１０および／または後板部１２０の形状と無関係であってよい。 The side plate portion 130 has a plurality of surfaces provided between the front plate portion 110 and the rear plate portion 120, and forms an air chamber together with the front plate portion 110 and the rear plate portion 120. The side plate portion 130 is formed by bending a plate-shaped member to form a plurality of surfaces. FIG. 1 shows an example in which the side plate portion 130 has four surfaces and is combined with the front plate portion 110 and the rear plate portion 120 to form a cubic air chamber. The side plate portion 130 is provided with, for example, an attachment portion to which the front plate portion 110 and the rear plate portion 120 are attached. Note that FIG. 1 shows an example in which the number of surfaces on which the side plate portion 130 forms an air chamber is a number corresponding to the quadrangular shape of the front plate portion 110 and the rear plate portion 120, but the number is limited to this. There is nothing. The shape of the side plate 130 may be formed independently of the shape of the front plate 110 and / or the rear plate 120, and in this case, the number of surfaces of the side plate 130 is also the front plate 110 and / or the rear. It may be irrelevant to the shape of the plate portion 120.
　側板部１３０は、板状の部材から形成されていることが望ましい。側板部１３０は、例えば、金属の板状材料からプレス加工等によって形成されている。側板部１３０は、板状の部材を折り曲げて形成されていてもよい。以上の前板部１１０、後板部１２０、および側板部１３０は、例えば、金属材料で形成されている。これに代えて、前板部１１０、後板部１２０、および側板部１３０は、木材、樹脂等の材料で形成されていてもよい。 It is desirable that the side plate portion 130 is formed of a plate-shaped member. The side plate portion 130 is formed from, for example, a metal plate-like material by press working or the like. The side plate portion 130 may be formed by bending a plate-shaped member. The front plate portion 110, the rear plate portion 120, and the side plate portion 130 are made of, for example, a metal material. Instead, the front plate portion 110, the rear plate portion 120, and the side plate portion 130 may be made of a material such as wood or resin.
　前板部１１０、後板部１２０、および側板部１３０は、スピーカ装置１００が発生する音に含まれる周波数で共鳴して振動する程度に、薄い板厚で形成されている。側板部１３０は、折り曲げられて形成できる程度の薄い板厚で形成されている。また、側板部１３０は、プレス加工によって折り曲げて形成されることが望ましい。プレス加工等によって折り曲げて形成できる程度の板厚は、例えば、０．１ｍｍ以上、かつ、１０ｍｍ以下である。側板部１３０の厚さは、０．３ｍｍ以上、かつ、５ｍｍ以下であってもよい。また、側板部１３０の厚さは、０．５ｍｍ以上、かつ、３ｍｍ以下でもよい。側板部１３０は、２ｍｍ以下の厚みの板で形成されていることが望ましい。なお、前板部１１０および後板部１２０の少なくとも一部は、このような側板部１３０の厚さと同等程度の厚さに形成されていることが望ましい。 The front plate portion 110, the rear plate portion 120, and the side plate portion 130 are formed to be thin enough to resonate and vibrate at a frequency included in the sound generated by the speaker device 100. The side plate portion 130 is formed with a thin plate thickness that can be formed by bending. Further, it is desirable that the side plate portion 130 is formed by bending by press working. The plate thickness that can be formed by bending by press working or the like is, for example, 0.1 mm or more and 10 mm or less. The thickness of the side plate portion 130 may be 0.3 mm or more and 5 mm or less. Further, the thickness of the side plate portion 130 may be 0.5 mm or more and 3 mm or less. It is desirable that the side plate portion 130 is formed of a plate having a thickness of 2 mm or less. It is desirable that at least a part of the front plate portion 110 and the rear plate portion 120 is formed to have a thickness equivalent to the thickness of such a side plate portion 130.
　以上の本実施形態に係るスピーカ装置１００は、従来のスピーカとは異なり、側板部１３０を共鳴によって振動できる程度に薄くする。また、前板部１１０および後板部１２０も、同様に薄くしてもよい。このようなスピーカ装置１００の筐体の断面構造を次に説明する。 The speaker device 100 according to the above embodiment is different from the conventional speaker, and the side plate portion 130 is made thin enough to vibrate by resonance. Further, the front plate portion 110 and the rear plate portion 120 may be similarly thinned. The cross-sectional structure of the housing of the speaker device 100 will be described below.
＜スピーカ装置１００の断面の構成例＞
　図２は、本実施形態に係るスピーカ装置１００の断面斜視図の一例を示す。図２は、図１に示すＡ－Ａ’線を含む面によってスピーカ装置１００の筐体を切断した場合の断面斜視図の一例を示す。側板部１３０は、複数の面のうち１または２以上の面において、前板部１１０から後板部１２０に向かう方向に延伸する凸状補強部１３２を有する。また、側板部１３０は、複数の面のうち１または複数の面に、このような凸状補強部１３２を複数有してもよい。 <Structure example of cross section of speaker device 100>
FIG. 2 shows an example of a cross-sectional perspective view of the speaker device 100 according to the present embodiment. FIG. 2 shows an example of a cross-sectional perspective view when the housing of the speaker device 100 is cut by the surface including the AA'line shown in FIG. The side plate portion 130 has a convex reinforcing portion 132 extending in a direction from the front plate portion 110 to the rear plate portion 120 on one or more of the plurality of surfaces. Further, the side plate portion 130 may have a plurality of such convex reinforcing portions 132 on one or a plurality of surfaces among the plurality of surfaces.
　図２は、側板部１３０が空気室を形成する４つの面のそれぞれに凸状補強部１３２を複数有する例を示す。凸状補強部１３２は、板状の部材を補強するための補強部材として機能し、補強する部材の平面に対して略直角の方向に設けられている凸状の部材である。側板部１３０がプレス加工によって形成される場合、凸状補強部１３２もプレス加工によって形成されていることが望ましい。このような凸状補強部１３２が、例えば、図２に示すような空気室を形成する４つの面を有する側板部１３０に設けられる場合、１つの凸状補強部１３２を１つの面に形成すれば、当該側板部１３０の強度を十分に維持できる。 FIG. 2 shows an example in which the side plate portion 130 has a plurality of convex reinforcing portions 132 on each of the four surfaces forming the air chamber. The convex reinforcing portion 132 functions as a reinforcing member for reinforcing the plate-shaped member, and is a convex member provided in a direction substantially perpendicular to the plane of the reinforcing member. When the side plate portion 130 is formed by press working, it is desirable that the convex reinforcing portion 132 is also formed by press working. When such a convex reinforcing portion 132 is provided on a side plate portion 130 having four surfaces forming an air chamber as shown in FIG. 2, for example, one convex reinforcing portion 132 is formed on one surface. For example, the strength of the side plate portion 130 can be sufficiently maintained.
　ここで、本実施形態に係る凸状補強部１３２は、スピーカ装置１００が発生させる音の振動を、当該凸状補強部１３２が設けられている面に拡散させる機能を更に有する。このような凸状補強部１３２は、例えば、バイオリン、チェロ等に設けられているバスバー等の機能に類似する。このような機能を有する凸状補強部１３２は、空気室を形成している複数の面のうち２以上の面に形成されていることが望ましい。凸状補強部１３２は、空気室を形成している複数の面の全ての面に形成されていてもよい。また、少なくとも１つの面に、複数の凸状補強部１３２が形成されていることがより望ましい。 Here, the convex reinforcing portion 132 according to the present embodiment further has a function of diffusing the vibration of the sound generated by the speaker device 100 on the surface on which the convex reinforcing portion 132 is provided. Such a convex reinforcing portion 132 resembles the function of a bus bar or the like provided on, for example, a violin, a cello, or the like. It is desirable that the convex reinforcing portion 132 having such a function is formed on two or more of the plurality of surfaces forming the air chamber. The convex reinforcing portion 132 may be formed on all the surfaces of the plurality of surfaces forming the air chamber. Further, it is more desirable that a plurality of convex reinforcing portions 132 are formed on at least one surface.
　このように、側板部１３０には、強度を維持するのに十分な数以上の凸状補強部１３２が、複数の面に設けられている。これにより、側板部１３０を含む筐体全体に音の振動を拡散させることができる。なお、凸状補強部１３２は、前板部１１０および／または後板部１２０に設けられていてもよい。 As described above, the side plate portion 130 is provided with a plurality of convex reinforcing portions 132 on a plurality of surfaces, which is sufficient in number or more to maintain the strength. As a result, the vibration of the sound can be diffused to the entire housing including the side plate portion 130. The convex reinforcing portion 132 may be provided on the front plate portion 110 and / or the rear plate portion 120.
　また、スピーカ装置１００は、柱状部材１５０を更に備える。柱状部材１５０は、前板部１１０から後板部１２０に向かう方向と平行な方向に延伸し、一方の端部が前板部１１０の第１固定位置１１４に固定されており、他方の端部が後板部１２０の第２固定位置１２２に固定されている。第１固定位置１１４および第２固定位置１２２は、例えば、貫通孔等でよく、この場合、柱状部材１５０はネジ等で固定される。 Further, the speaker device 100 further includes a columnar member 150. The columnar member 150 extends in a direction parallel to the direction from the front plate portion 110 toward the rear plate portion 120, and one end thereof is fixed to the first fixed position 114 of the front plate portion 110, and the other end portion Is fixed at the second fixed position 122 of the rear plate portion 120. The first fixing position 114 and the second fixing position 122 may be, for example, through holes or the like, and in this case, the columnar member 150 is fixed by screws or the like.
　柱状部材１５０は、前板部１１０の振動を後板部１２０に伝達する、および／または、後板部１２０の振動を前板部１１０に伝達する機能を有する。スピーカ装置１００が柱状部材１５０を有することにより、前板部１１０または後板部１２０に生じた振動が他方に伝わるので、前板部１１０および後板部１２０の振動位相を変化させて、再生する音の音色および音量を調節できる。例えば、従来のスピーカにおいて、スピーカユニットの振動板の反作用によって発生していた位相が反転した筐体の振動を低減させることができる。また、例えば、再生する音に好適な音色および音量に最適化することができる。その結果、スピーカ装置１００は、例えば、従来の同等サイズのスピーカに比べて、再現性良く迫力がある音を発生することができる。 The columnar member 150 has a function of transmitting the vibration of the front plate portion 110 to the rear plate portion 120 and / or transmitting the vibration of the rear plate portion 120 to the front plate portion 110. Since the speaker device 100 has the columnar member 150, the vibration generated in the front plate portion 110 or the rear plate portion 120 is transmitted to the other, so that the vibration phases of the front plate portion 110 and the rear plate portion 120 are changed and reproduced. You can adjust the tone and volume of the sound. For example, in a conventional speaker, it is possible to reduce the vibration of the housing whose phase is inverted, which is generated by the reaction of the diaphragm of the speaker unit. Further, for example, it can be optimized for a tone color and volume suitable for the sound to be reproduced. As a result, the speaker device 100 can generate powerful sound with better reproducibility as compared with, for example, a conventional speaker of the same size.
　前板部１１０には、柱状部材１５０の固定位置を調節するための、複数の第１固定位置１１４が設けられていることが望ましい。同様に、後板部１２０には、柱状部材１５０の固定位置を調節するための、複数の第１固定位置１１４に対応する複数の第２固定位置１２２が設けられていることが望ましい。これにより、柱状部材１５０を取り付ける位置を調節することができ、スピーカ装置１００が出力する音色および音量等を調節することができる。 It is desirable that the front plate portion 110 is provided with a plurality of first fixed positions 114 for adjusting the fixed positions of the columnar member 150. Similarly, it is desirable that the rear plate portion 120 is provided with a plurality of second fixed positions 122 corresponding to the plurality of first fixed positions 114 for adjusting the fixed positions of the columnar member 150. As a result, the position where the columnar member 150 is attached can be adjusted, and the tone color, volume, and the like output by the speaker device 100 can be adjusted.
　これに加えて、柱状部材１５０は、バネ付きのネジ等で取り付けられてよい。また、柱状部材１５０は、長さが調整可能に構成されていてもよい。これにより、柱状部材１５０は、突っ張り具合が調整可能な部材として、スピーカ装置１００に取り付けられる。なお、柱状部材１５０は、１つのスピーカ装置１００に複数設けられていてもよい。 In addition to this, the columnar member 150 may be attached with a screw with a spring or the like. Further, the columnar member 150 may be configured so that the length can be adjusted. As a result, the columnar member 150 is attached to the speaker device 100 as a member whose tension can be adjusted. A plurality of columnar members 150 may be provided in one speaker device 100.
　図１および図２は、前板部１１０および後板部１２０が平行に配置されている例を示す。そして、第１固定位置１１４および第２固定位置１２２の間の距離は、前板部１１０および後板部１２０の間の距離に略等しい。また、柱状部材１５０は、一例として、長さが前板部１１０および後板部１２０の間の距離に略等しく、前板部１１０および後板部１２０を接続する。 1 and 2 show an example in which the front plate portion 110 and the rear plate portion 120 are arranged in parallel. The distance between the first fixed position 114 and the second fixed position 122 is substantially equal to the distance between the front plate portion 110 and the rear plate portion 120. Further, as an example, the columnar member 150 has a length substantially equal to the distance between the front plate portion 110 and the rear plate portion 120, and connects the front plate portion 110 and the rear plate portion 120.
　以上のように、本実施形態に係るスピーカ装置１００は、前板部１１０、後板部１２０、および側板部１３０がプレス加工によって形成される程度の厚さで形成されるので、筐体固有の振動を発生させる。また、スピーカ装置１００は、空気室を形成する面のそれぞれに凸状補強部１３２を有するので、このような固有振動を筐体全体で発生させる。そして、スピーカ装置１００は、前板部１１０および後板部１２０を接続する柱状部材１５０が更に設けられるので、バイオリン、チェロ等の共鳴胴のような固有振動を有する音を再生することに好適な筐体とすることができる。 As described above, the speaker device 100 according to the present embodiment is formed with a thickness such that the front plate portion 110, the rear plate portion 120, and the side plate portion 130 are formed by press working, and thus is unique to the housing. Generate vibration. Further, since the speaker device 100 has a convex reinforcing portion 132 on each of the surfaces forming the air chamber, such natural vibration is generated in the entire housing. Since the speaker device 100 is further provided with a columnar member 150 connecting the front plate portion 110 and the rear plate portion 120, it is suitable for reproducing a sound having a natural vibration such as a sound box such as a violin or a cello. It can be a housing.
　このようなスピーカ装置１００は、スピーカユニット１４０が駆動する音振動に基づいて、筐体を含む全体が楽器のように音を鳴らすように動作する。このように、スピーカ装置１００は、装置全体を楽器のように響かせるので、従来のスピーカのように、特定の周波数成分の振動等を抑制するように機能しなくてよい。したがって、スピーカ装置１００は、筐体を大型化することなく、原音に忠実な音を再現することができる。また、スピーカ装置１００は、筐体を積極的に振動させるために筐体の厚さを薄く形成することが好ましく、これにより、筐体全体の重さを軽量化できる。 Such a speaker device 100 operates so that the entire body including the housing sounds like a musical instrument based on the sound vibration driven by the speaker unit 140. In this way, since the speaker device 100 makes the entire device sound like a musical instrument, it does not have to function to suppress vibration or the like of a specific frequency component like a conventional speaker. Therefore, the speaker device 100 can reproduce a sound faithful to the original sound without increasing the size of the housing. Further, the speaker device 100 preferably has a thin housing in order to vibrate the housing positively, whereby the weight of the entire housing can be reduced.
＜スピーカ装置１００の出力の例＞
　図３は、本実施形態に係るスピーカ装置１００が出力した音の検出結果の第１例を示す。図３は、スピーカ装置１００の前板部１１０にマイクを接触させ、前板部１１０の振動を測定した結果の一例を示す。図３の横軸は、周波数を示し、縦軸は振動の強度の相対的な値を対数軸で示す。 <Example of output of speaker device 100>
FIG. 3 shows a first example of the sound detection result output by the speaker device 100 according to the present embodiment. FIG. 3 shows an example of the result of measuring the vibration of the front plate portion 110 by bringing the microphone into contact with the front plate portion 110 of the speaker device 100. The horizontal axis of FIG. 3 indicates the frequency, and the vertical axis indicates the relative value of the vibration intensity on the logarithmic axis.
　図３において、比較対象として、既知のスピーカが出力した音の検出結果を示す。当該スピーカは、本体の大きさが１２００ｍｍ（横）×９５０ｍｍ（高さ）×５８２ｍｍ（奥行）の筐体内に、２つの３６ｃｍサブウーファ、２つの２５ｃｍウーファ、１つのホーン型トゥイータ、２つのダイヤモンドドーム・スーパートゥイータが設けられ、１チャンネル（片チャンネル）あたりの総重量が２００ｋｇ以上であり、詳細は非特許文献１に掲載されている。 FIG. 3 shows the detection result of the sound output by a known speaker as a comparison target. The speaker has two 36 cm subwoofers, two 25 cm woofers, one horn-type tweeter, and two diamond domes in a housing having a main body size of 1200 mm (width) x 950 mm (height) x 582 mm (depth). A super tweeter is provided, and the total weight per channel (one channel) is 200 kg or more, and the details are published in Non-Patent Document 1.
　図４は、本実施形態に係るスピーカ装置１００が出力した音の検出結果の第２例を示す。図４は、スピーカ装置１００から略１ｍ離れた位置で音声を検出して周波数特性を測定した結果の一例を示す。図４の横軸は、周波数を示し、縦軸は音声信号の信号強度の相対的な値を対数軸で示す。図４においても、図３と同じ既知のスピーカを用いて同様の測定を行った結果を比較対象として示す。　 FIG. 4 shows a second example of the sound detection result output by the speaker device 100 according to the present embodiment. FIG. 4 shows an example of the result of measuring the frequency characteristics by detecting the sound at a position approximately 1 m away from the speaker device 100. The horizontal axis of FIG. 4 indicates the frequency, and the vertical axis indicates the relative value of the signal strength of the voice signal on the logarithmic axis. Also in FIG. 4, the results of performing the same measurement using the same known speaker as in FIG. 3 are shown as comparison targets.
　図３および図４は、大きく、重い既知のスピーカと比較して、容積が１／１００程度以下、重量が１／３０程度以下で形成されたスピーカ装置１００の測定結果の例を示す。図３より、小型および軽量のスピーカ装置１００にも関わらず、既知のスピーカよりも筐体表面の振動強度が４０ｄＢ程度大きくなることがわかる。また、図３および図４より、スピーカ装置１００の周波数特性のスペクトル形状がスタジオモニタ用の高性能なスピーカと同等程度となっており、既知のスピーカと同等程度に原音を忠実に再生できていることもわかる。 3 and 4 show an example of the measurement result of the speaker device 100 formed with a volume of about 1/100 or less and a weight of about 1/30 or less as compared with a large and heavy known speaker. From FIG. 3, it can be seen that the vibration intensity of the housing surface is about 40 dB larger than that of the known speaker, despite the small and lightweight speaker device 100. Further, from FIGS. 3 and 4, the spectral shape of the frequency characteristic of the speaker device 100 is about the same as that of a high-performance speaker for a studio monitor, and the original sound can be faithfully reproduced to the same extent as a known speaker. You can also see that.
　以上のように、スピーカ装置１００は、折り曲げて形成できる程度の薄い側板部１３０が大きく振動し、筐体全体で鳴り響くことができるので、音楽として有効な周波数帯域成分を盛大に出力できることがわかる。このように、スピーカ装置１００は、筐体自身の共鳴振動を利用することにより、例えば、ブックシェルフタイプのような小型の筐体であっても、容積が数十倍以上の大型の筐体のサブウーハーに匹敵する低音等を再生できる。 As described above, in the speaker device 100, since the thin side plate portion 130 that can be formed by bending vibrates greatly and can reverberate in the entire housing, it can be seen that the frequency band component effective as music can be output magnificently. In this way, by utilizing the resonance vibration of the housing itself, the speaker device 100 can be a large housing having a volume of several tens of times or more even if it is a small housing such as a bookshelf type. It can reproduce bass sounds comparable to subwoofers.
　以上の本実施形態に係るスピーカ装置１００は、電気信号を増幅する増幅回路、不要な信号成分を低減させるフィルタ回路等が更に内蔵されていてもよい。また、スピーカ装置１００に設けられている１または複数のスピーカユニット１４０には、圧電アクチュエータが含まれていてもよい。一例として、圧電アクチュエータは、トゥイータ１４６としてスピーカユニット１４０に含まれる。これらにより、スピーカ装置１００は、より小型および軽量な装置として構成できる。また、圧電アクチュエータを設けることにより、可聴帯域よりも高周波の音を再現することもできる。図３および図４の例は、このような、増幅回路、フィルタ回路、圧電アクチュエータが設けられたスピーカ装置１００から出力された音の一例である。 The speaker device 100 according to the above embodiment may further include an amplifier circuit for amplifying an electric signal, a filter circuit for reducing unnecessary signal components, and the like. Further, one or a plurality of speaker units 140 provided in the speaker device 100 may include a piezoelectric actuator. As an example, the piezoelectric actuator is included in the speaker unit 140 as a tweeter 146. As a result, the speaker device 100 can be configured as a smaller and lighter device. Further, by providing the piezoelectric actuator, it is possible to reproduce a sound having a frequency higher than that in the audible band. The examples of FIGS. 3 and 4 are examples of sounds output from the speaker device 100 provided with such an amplifier circuit, a filter circuit, and a piezoelectric actuator.
　なお、本実施形態に係るスピーカ装置１００は、再生する音に応じて筐体を固有振動させるので、空気室の内部の圧力が、既知のスピーカの空気室内部の圧力よりも高くなる傾向にある。このような圧力により、スピーカユニット１４０の少なくとも一部に不要な共振が発生することがある。そこで、このような共振を低減すべく、スピーカユニット１４０には、少なくとも一部を覆うカバー部材が更に設けられていることが望ましい。 Since the speaker device 100 according to the present embodiment naturally vibrates the housing in response to the reproduced sound, the pressure inside the air chamber tends to be higher than the pressure inside the air chamber of a known speaker. .. Due to such pressure, unnecessary resonance may occur in at least a part of the speaker unit 140. Therefore, in order to reduce such resonance, it is desirable that the speaker unit 140 is further provided with a cover member that covers at least a part of the speaker unit 140.
　例えば、スピーカユニット１４０に圧電アクチュエータが設けられている場合、当該圧電アクチュエータは小型かつ軽量であるため、空気室の圧力に応じて物理的に共振してしまうことがある。そこで、圧電アクチュエータは、前板部１１０に設けられた貫通口に固定されつつ、圧電アクチュエータが音声を出力する側の第１面とは反対側の第２面において、圧電アクチュエータの少なくとも一部を覆う保護部を更に有してよい。これにより、空気室の圧力が圧電アクチュエータに直接伝わることを防止して、不要な共振現象の発生を低減できる。 For example, when the speaker unit 140 is provided with a piezoelectric actuator, the piezoelectric actuator is small and lightweight, so that it may physically resonate according to the pressure in the air chamber. Therefore, while the piezoelectric actuator is fixed to the through hole provided in the front plate portion 110, at least a part of the piezoelectric actuator is placed on the second surface opposite to the first surface on the side where the piezoelectric actuator outputs sound. It may further have a protective portion to cover. As a result, it is possible to prevent the pressure in the air chamber from being directly transmitted to the piezoelectric actuator and reduce the occurrence of an unnecessary resonance phenomenon.
＜スピーカ装置１００の製造フローの一例＞
　以上の本実施形態に係るスピーカ装置１００は、筐体の一部である側板部１３０を１枚の板状の材質から形成することができるので、簡便に組み立てて製造することができる。図５は、本実施形態に係るスピーカ装置１００の製造フローの一例を示す。 <Example of manufacturing flow of speaker device 100>
The speaker device 100 according to the present embodiment described above can be easily assembled and manufactured because the side plate portion 130, which is a part of the housing, can be formed from a single plate-shaped material. FIG. 5 shows an example of the manufacturing flow of the speaker device 100 according to the present embodiment.
　まず、前板部１１０と、空気室を介して前板部１１０に対向する位置に設けられる後板部１２０とを形成する（Ｓ４１０）。前板部１１０および後板部１２０は、側板部１３０と同様の厚さを有してよく、これに代えて、側板部１３０の厚さよりも厚く形成されていてもよい。前板部１１０および後板部１２０は、一例として、１ｃｍ程度の厚さを有する。 First, the front plate portion 110 and the rear plate portion 120 provided at a position facing the front plate portion 110 via the air chamber are formed (S410). The front plate portion 110 and the rear plate portion 120 may have the same thickness as the side plate portion 130, and may be formed to be thicker than the thickness of the side plate portion 130 instead. The front plate portion 110 and the rear plate portion 120 have a thickness of about 1 cm as an example.
　前板部１１０には、スピーカユニット１４０が取り付けられる貫通口、バスレフレックス型を形成するための開口部１１２、１または複数の第１固定位置１１４、取り付け用のネジ穴等が形成される。また、後板部１２０には、１または複数の第２固定位置１２２、取り付け用のネジ穴等が形成される。 The front plate portion 110 is formed with a through hole to which the speaker unit 140 is attached, an opening 112 for forming a bass reflex type, one or a plurality of first fixed positions 114, a screw hole for attachment, and the like. Further, the rear plate portion 120 is formed with one or a plurality of second fixed positions 122, screw holes for attachment, and the like.
　次に、金属の板状材料からプレス加工によって、前板部１１０と後板部１２０との間に設けられた複数の面を有し、前板部１１０および後板部１２０とともに空気室を形成するための側板部１３０を折り曲げて形成する（Ｓ４２０）。この段階において、プレス加工によって、側板部１３０の複数の面のうち１または２以上の面において、前板部１１０から後板部１２０に向かう方向に延伸する凸状補強部１３２を形成する。側板部１３０は、一例として、２ｍｍ程度の厚さを有する。 Next, a metal plate-like material is pressed to form a plurality of surfaces provided between the front plate portion 110 and the rear plate portion 120, and an air chamber is formed together with the front plate portion 110 and the rear plate portion 120. The side plate portion 130 is bent and formed (S420). At this stage, the convex reinforcing portion 132 extending in the direction from the front plate portion 110 to the rear plate portion 120 is formed on one or more of the plurality of surfaces of the side plate portion 130 by press working. The side plate portion 130 has a thickness of about 2 mm as an example.
　プレス加工は、例えば、１枚の金属板を立体的に変形させるしぼり出しプレスといった加工である。金属板は、例えば、アルミニウム、ステンレス、または銅等の材料を含む。金属の板状材料は、例えば、２ｍｍ程度以下の厚みの板である。例えば、このようなプレス加工の実行により、凸状補強部１３２を有する側板部１３０が形成されることが好ましい。 The press processing is, for example, a processing such as a squeeze press that three-dimensionally deforms one metal plate. The metal plate includes, for example, a material such as aluminum, stainless steel, or copper. The metal plate-like material is, for example, a plate having a thickness of about 2 mm or less. For example, it is preferable that the side plate portion 130 having the convex reinforcing portion 132 is formed by performing such press working.
　これにより、側板部１３０は、例えば、加工によって生じる応力歪を残留させることができ、スピーカ装置１００として形成されると、当該スピーカ装置１００の固有振動を容易に発生させることができる。また、側板部１３０等の部材を自動で大量に生産することができる。なお、凸状補強部１３２が側板部１３０の空気室を向く面に形成される例を説明したが、これに代えて、または、これに加えて、凸状補強部１３２は、側板部１３０の外部を向く面に形成されてもよい。 As a result, the side plate portion 130 can retain the stress-strain generated by processing, for example, and when formed as the speaker device 100, the natural vibration of the speaker device 100 can be easily generated. In addition, members such as the side plate portion 130 can be automatically mass-produced. An example in which the convex reinforcing portion 132 is formed on the surface of the side plate portion 130 facing the air chamber has been described, but instead of or in addition to this, the convex reinforcing portion 132 is formed on the side plate portion 130. It may be formed on a surface facing the outside.
　次に、前板部１１０に１または複数のスピーカユニット１４０を取り付ける（Ｓ４３０）。ここで、前板部１１０には、柱状部材１５０等の他の部材が取り付けられてもよい。なお、Ｓ４１０からＳ４３０のフローは、順番を変更してもよい。例えば、Ｓ４２０、Ｓ４１０、Ｓ４３０の順に実行してもよく、これに代えて、Ｓ４１０、Ｓ４３０、Ｓ４２０の順に実行してもよい。 Next, one or more speaker units 140 are attached to the front plate portion 110 (S430). Here, another member such as a columnar member 150 may be attached to the front plate portion 110. The order of the flows from S410 to S430 may be changed. For example, S420, S410, and S430 may be executed in this order, and instead, S410, S430, and S420 may be executed in this order.
　次に、側板部１３０に前板部１１０および後板部１２０を取り付ける（Ｓ４４０）。ここで、前板部１１０および後板部１２０の所定の位置に、柱状部材１５０を取り付けてもよい。なお、側板部１３０の内部には、増幅回路、フィルタ回路等の他の部材が更に取り付けられてもよい。以上のように、本実施形態に係るスピーカ装置１００は、容易に製造することができる。 Next, the front plate portion 110 and the rear plate portion 120 are attached to the side plate portion 130 (S440). Here, the columnar member 150 may be attached to predetermined positions of the front plate portion 110 and the rear plate portion 120. In addition, other members such as an amplifier circuit and a filter circuit may be further attached to the inside of the side plate portion 130. As described above, the speaker device 100 according to the present embodiment can be easily manufactured.
　以上の本実施形態に係るスピーカ装置１００は、前板部１１０にスピーカユニット１４０を取り付ける例を説明したが、これに限定されることはない。スピーカユニット１４０は、側板部１３０に取り付けられてもよい。また、スピーカ装置１００の形状を立方体の形状として説明したが、これに限定されることはない。スピーカ装置１００は、６つよりも多い数の面で空気室を形成する複雑な形状を有してもよく、また、曲面等を有してもよい。 The speaker device 100 according to the present embodiment described above has described an example in which the speaker unit 140 is attached to the front plate portion 110, but the present invention is not limited to this. The speaker unit 140 may be attached to the side plate portion 130. Further, although the shape of the speaker device 100 has been described as the shape of a cube, the present invention is not limited to this. The speaker device 100 may have a complicated shape that forms an air chamber with more than six surfaces, or may have a curved surface or the like.
　また、スピーカユニット１４０は、例えば、ウーファ１４２だけの構成でもよく、これに代えて、ウーファ１４２およびスコーカ１４４だけの構成でもよい。また、本実施例において、スピーカ装置１００は、開口部１１２を有するバスレフレックス型の構成例を説明したが、これに限定されることはない。例えば、スピーカ装置１００には、開口部１１２がなくてもよい。また、以上の本実施形態に係るスピーカ装置１００は、凸状補強部１３２および柱状部材１５０が設けられている例を説明したが、これに限定されることはない。スピーカ装置１００は、凸状補強部１３２および柱状部材１５０のいずれか一方が設けられていてもよい。 Further, the speaker unit 140 may have a configuration of only the woofer 142, for example, and may have a configuration of only the woofer 142 and the scooka 144 instead. Further, in the present embodiment, the speaker device 100 has been described as a bass reflex type configuration example having an opening 112, but the present invention is not limited thereto. For example, the speaker device 100 may not have the opening 112. Further, the speaker device 100 according to the present embodiment described above has described an example in which the convex reinforcing portion 132 and the columnar member 150 are provided, but the present invention is not limited thereto. The speaker device 100 may be provided with either one of the convex reinforcing portion 132 and the columnar member 150.
　以上、本発明を実施の形態を用いて説明したが、本発明の技術的範囲は上記実施の形態に記載の範囲には限定されず、その要旨の範囲内で種々の変形および変更が可能である。例えば、装置の分散・統合の具体的な実施の形態は、以上の実施の形態に限られず、その全部又は一部について、任意の単位で機能的又は物理的に分散・統合して構成することができる。また、複数の実施の形態の任意の組み合わせによって生じる新たな実施の形態も、本発明の実施の形態に含まれる。組み合わせによって生じる新たな実施の形態の効果は、もとの実施の形態の効果を合わせ持つ。 Although the present invention has been described above using the embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments, and various modifications and changes can be made within the scope of the gist thereof. is there. For example, the specific embodiment of the distribution / integration of the device is not limited to the above embodiment, and all or a part thereof may be functionally or physically distributed / integrated in an arbitrary unit. Can be done. Also included in the embodiments of the present invention are new embodiments resulting from any combination of the plurality of embodiments. The effect of the new embodiment produced by the combination has the effect of the original embodiment together.
１００　スピーカ装置
１１０　前板部
１１２　開口部
１１４　第１固定位置
１２０　後板部
１２２　第２固定位置
１３０　側板部
１３２　凸状補強部
１４０　スピーカユニット
１４２　ウーファ
１４４　スコーカ
１４６　トゥイータ
１５０　柱状部材 100 Speaker device 110 Front plate 112 Opening 114 First fixed position 120 Rear plate 122 Second fixed position 130 Side plate 132 Convex reinforcement 140 Speaker unit 142 Ufa 144 Scorker 146 Tweeter 150 Columnar member

Claims (15)

  1. 　１または複数のスピーカユニットが設けられている前板部と、
    　空気室を介して前記前板部に対向している後板部と、
    　前記前板部と前記後板部との間に設けられた複数の面を有し、前記前板部および前記後板部とともに前記空気室を形成する側板部と
    　を備え、
    　前記側板部は、２ｍｍ以下の厚みの板で形成されている、スピーカ装置。     The front plate part where one or more speaker units are provided, and
    The rear plate portion facing the front plate portion via the air chamber and the rear plate portion
    It has a plurality of surfaces provided between the front plate portion and the rear plate portion, and includes the front plate portion and the side plate portion that forms the air chamber together with the rear plate portion.
    A speaker device in which the side plate portion is formed of a plate having a thickness of 2 mm or less.
  2. 　前記側板部は、板状の部材が折り曲げられて前記複数の面を形成している、請求項１に記載のスピーカ装置。 The speaker device according to claim 1, wherein the side plate portion is formed by bending a plate-shaped member to form the plurality of surfaces.
  3. 　前記側板部は、前記複数の面のうち１または２以上の面において、前記前板部から前記後板部に向かう方向に延伸する凸状補強部を有する、請求項１または２に記載のスピーカ装置。 The speaker according to claim 1 or 2, wherein the side plate portion has a convex reinforcing portion extending in a direction from the front plate portion to the rear plate portion on one or more of the plurality of surfaces. apparatus.
  4. 　前記側板部は、前記複数の面のうち１または複数の面に、複数の前記凸状補強部を有する、請求項３に記載のスピーカ装置。 The speaker device according to claim 3, wherein the side plate portion has a plurality of the convex reinforcing portions on one or a plurality of the plurality of surfaces.
  5. 　前記側板部は、金属の板状材料からプレス加工によって形成されている、請求項１から４のいずれか一項に記載のスピーカ装置。 The speaker device according to any one of claims 1 to 4, wherein the side plate portion is formed from a metal plate-like material by press working.
  6. 　前記前板部から前記後板部に向かう方向と平行な方向に延伸し、一方の端部が前記前板部の第１固定位置に固定されており、他方の端部が前記後板部の第２固定位置に固定されている柱状部材を更に備える、請求項１から５のいずれか一項に記載のスピーカ装置。 It extends in a direction parallel to the direction from the front plate portion to the rear plate portion, one end portion is fixed to the first fixed position of the front plate portion, and the other end portion is the rear plate portion. The speaker device according to any one of claims 1 to 5, further comprising a columnar member fixed at a second fixed position.
  7. 　前記前板部および前記後板部は平行に配置されており、前記第１固定位置および前記第２固定位置の間の距離は、前記前板部および前記後板部の間の距離に等しい、請求項６に記載のスピーカ装置。 The front plate portion and the rear plate portion are arranged in parallel, and the distance between the first fixed position and the second fixed position is equal to the distance between the front plate portion and the rear plate portion. The speaker device according to claim 6.
  8. 　前記前板部は、前記柱状部材の固定位置を調節するための、複数の前記第１固定位置を有し、
    　前記後板部は、前記柱状部材の固定位置を調節するための、複数の前記第１固定位置に対応する複数の前記第２固定位置を有する、
    　請求項６または７に記載のスピーカ装置。     The front plate portion has a plurality of the first fixing positions for adjusting the fixing position of the columnar member.
    The rear plate portion has a plurality of the second fixing positions corresponding to the plurality of the first fixing positions for adjusting the fixing position of the columnar member.
    The speaker device according to claim 6 or 7.
  9. 　前記前板部は、１または複数の前記スピーカユニットが音声を出力する側の第１面から、前記第１面と反対側の第２面まで貫通する開口部を更に有する、請求項１から８のいずれか一項に記載のスピーカ装置。 Claims 1 to 8 further include an opening that penetrates from the first surface on the side where the speaker unit outputs sound to the second surface on the side opposite to the first surface. The speaker device according to any one of the above.
  10. 　１または複数の前記スピーカユニットには、圧電アクチュエータが含まれている、請求項１から９のいずれか一項に記載のスピーカ装置。 The speaker device according to any one of claims 1 to 9, wherein the one or a plurality of the speaker units include a piezoelectric actuator.
  11. 　前記圧電アクチュエータは、
    　　前記前板部に設けられた貫通口に固定され、
    　　前記圧電アクチュエータが音声を出力する側の第１面とは反対側の第２面において、前記圧電アクチュエータの少なくとも一部を覆う保護部を更に有する、
    　請求項１０に記載のスピーカ装置。     The piezoelectric actuator is
    It is fixed to the through hole provided in the front plate portion and is fixed.
    On the second surface opposite to the first surface on the side where the piezoelectric actuator outputs sound, a protective portion that covers at least a part of the piezoelectric actuator is further provided.
    The speaker device according to claim 10.
  12. 　１または複数のスピーカユニットが設けられている前板部と、
    　空気室を介して前記前板部に対向している後板部と、
    　前記前板部と前記後板部との間に設けられた複数の面を有し、前記前板部および前記後板部とともに前記空気室を形成する側板部と
    　を備え、
    　前記側板部は、前記複数の面のうち２以上の面において、前記前板部から前記後板部に向かう方向に延伸する凸状補強部を有する、スピーカ装置。     The front plate part where one or more speaker units are provided, and
    The rear plate portion facing the front plate portion via the air chamber and the rear plate portion
    It has a plurality of surfaces provided between the front plate portion and the rear plate portion, and includes the front plate portion and the side plate portion that forms the air chamber together with the rear plate portion.
    The speaker device has a convex reinforcing portion extending in a direction from the front plate portion to the rear plate portion on two or more of the plurality of surfaces.
  13. 　１または複数のスピーカユニットが設けられている前板部と、
    　空気室を介して前記前板部に対向している後板部と、
    　前記前板部と前記後板部との間に設けられた複数の面を有し、前記前板部および前記後板部とともに前記空気室を形成する側板部と
    　を備え、
    　前記前板部から前記後板部に向かう方向と平行な方向に延伸し、一方の端部が前記前板部の第１固定位置に固定されており、他方の端部が前記後板部の第２固定位置に固定されている柱状部材を更に備える、スピーカ装置。     The front plate part where one or more speaker units are provided, and
    The rear plate portion facing the front plate portion via the air chamber and the rear plate portion
    It has a plurality of surfaces provided between the front plate portion and the rear plate portion, and includes the front plate portion and the side plate portion that forms the air chamber together with the rear plate portion.
    It extends in a direction parallel to the direction from the front plate portion to the rear plate portion, one end portion is fixed to the first fixed position of the front plate portion, and the other end portion is the rear plate portion. A speaker device further comprising a columnar member fixed at a second fixed position.
  14. 　前板部と、空気室を介して前記前板部に対向する位置に設けられる後板部とを形成するステップと、
    　金属の板状材料からプレス加工によって、前記前板部と前記後板部との間に設けられた複数の面を有し、前記前板部および前記後板部とともに前記空気室を形成するための側板部を形成するステップと、
    　前記前板部に１または複数のスピーカユニットを取り付けるステップと、
    　前記側板部に前記前板部および前記後板部を取り付けるステップと
    　を備える、スピーカ装置の製造方法。     A step of forming a front plate portion and a rear plate portion provided at a position facing the front plate portion via an air chamber, and a step of forming the rear plate portion.
    In order to have a plurality of surfaces provided between the front plate portion and the rear plate portion by press working from a metal plate-like material, and to form the air chamber together with the front plate portion and the rear plate portion. Steps to form the side plate of
    The step of attaching one or more speaker units to the front plate portion,
    A method for manufacturing a speaker device, comprising a step of attaching the front plate portion and the rear plate portion to the side plate portion.
  15. 　前記側板部を形成するステップにおいて、プレス加工によって、前記側板部の前記複数の面のうち１または２以上の面において、前記前板部から前記後板部に向かう方向に延伸する凸状補強部を形成する、請求項１４に記載のスピーカ装置の製造方法。 In the step of forming the side plate portion, a convex reinforcing portion extending in a direction from the front plate portion toward the rear plate portion on one or more of the plurality of surfaces of the side plate portion by press working. The method for manufacturing a speaker device according to claim 14, wherein the speaker device is formed.
PCT/JP2019/038925 2019-10-02 2019-10-02 Speaker device and method for manufacturing speaker device WO2021064896A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60230797A (en) * 1984-04-28 1985-11-16 Mitsumoto Shokai:Kk Speaker box
JPS61152198A (en) * 1984-12-26 1986-07-10 Hitachi Ltd Speaker system
JPS62137000A (en) * 1985-12-10 1987-06-19 Sawafuji Dainameka Kk Dome type piezoelectric speaker

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60230797A (en) * 1984-04-28 1985-11-16 Mitsumoto Shokai:Kk Speaker box
JPS61152198A (en) * 1984-12-26 1986-07-10 Hitachi Ltd Speaker system
JPS62137000A (en) * 1985-12-10 1987-06-19 Sawafuji Dainameka Kk Dome type piezoelectric speaker

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