KR890002814B1 - Speaker with plane diaphragm - Google Patents

Speaker with plane diaphragm Download PDF

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Publication number
KR890002814B1
KR890002814B1 KR1019860005275A KR860005275A KR890002814B1 KR 890002814 B1 KR890002814 B1 KR 890002814B1 KR 1019860005275 A KR1019860005275 A KR 1019860005275A KR 860005275 A KR860005275 A KR 860005275A KR 890002814 B1 KR890002814 B1 KR 890002814B1
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KR
South Korea
Prior art keywords
speaker
diaphragm
present
piezoelectric element
attached
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KR1019860005275A
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Korean (ko)
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KR880001170A (en
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이계수
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삼성전자부품 주식회사
임경훈
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Priority to KR1019860005275A priority Critical patent/KR890002814B1/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00Piezoelectric transducers; Electrostrictive transducers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00Diaphragms for electromechanical transducers; Cones
    • H04R7/02Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04Plane diaphragms

Abstract

Tapered air-duct (2) is formed in frames (1,1') with a cushion (3). Vibration plates (4) are installed on the upper and lower sides of the cushion (3). Piezo-electric devices (5) are attached to each vibration plate (4) and a supporting bracket (6) is placed between the piezo-electric devices. The frames (1,1') are covered with a protection net (7).

Description

평면 스피커Flat speakers

제1도는 본 발명에 따른 평면스피커의 단면도.1 is a cross-sectional view of a plane speaker according to the present invention.

제2도는 본 발명에 따른 평면스피커의 다른 실시예 단면도.2 is a cross-sectional view of another embodiment of a planar speaker according to the present invention.

제3도는 본 발명에 따른 평면스피커에 트랜스를 부착한 상태도.3 is a state attached to the transformer to the flat speaker according to the present invention.

제4도는 본 발명에 따른 평면스피커의 특성 그래프.4 is a characteristic graph of the planar speaker according to the present invention.

제5도는 종래 스피커의 특성 그래프이다.5 is a characteristic graph of a conventional speaker.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1, 1 : 프레임 2 : 공기구멍1, 1: frame 2: air hole

3 : 구션재 4 : 진동판3: cushioning material 4: diaphragm

5 : 압전소자 6 : 브라켓5: piezoelectric element 6: bracket

7 : 보호망7: protection net

본 발명은 전류신호를 음성신호로 변환시키는 스피커에 관한 것으로, 특히 압전소자를 이용하여 두께를 박형으로 구성시킴과 동시에 서로 대향되게 2중으로 진동판을 설치하여 전후 방향에서 동일한 형태의 재생음을 청취할 수 있도록 한 평면스피커에 관한 것이다.The present invention relates to a speaker for converting a current signal into a voice signal. Particularly, a piezoelectric element is used to make the thickness thin, and at the same time, a diaphragm is installed to face each other so that the same type of sound can be heard in the front and rear directions. To a flat speaker.

스피커는 일반적으로 전류신호를 음성신호로 변환하여 소리를 전달하는 것으로, 보이스코일과 페라이트마그네트 및 코온진동판으로 구성된 것이 대부분이나, 이러한 다이나믹 코온형스피커는 두께가 두껍고 구조적으로 복잡하기 때문에 오늘날에는 압전소자를 이용한 스피커의 개발이 활기를 띄고 있는바, 상기 압전소자를 이용한 스피커는 구조적으로 간단하고 박형으로 제작할 수 있는 장점을 가지고 있지만 음의 재생능력이 고음쪽으로 치우쳐 있어 고음의 재생에만 사용되고 있는 실정이며, 저음 및 중음을 재생시키기 위해서 코온형스피커를 별도로 부착하여야 하는 문제점이 있었다.In general, a speaker converts a current signal into a voice signal and transmits a sound. Most of them are composed of a voice coil, a ferrite magnet, and a coon vibrating plate, but these dynamic coon speakers are thick and structurally complex. The development of the speaker using the bar is active, the piezoelectric speaker using the structure has a simple structure and simple, but the advantage of the sound reproduction ability is biased toward the treble, which is used only for the reproduction of high-pitched sound, In order to reproduce the bass and the midtones, there was a problem in that the coon-type speaker was separately attached.

이에 본 고안에서는 상기와 같은 문제점을 해결하여 스피커를 박형으로 제작함과 동시에 중음 및 저음의 재생능력을 향상시킬 수 있을 뿐만 아니라 스피커의 전, 후 위치에서 재생음을 청취할 수 있도록 2개로 이루어진 프레임에 공기구멍을 테이퍼지게 각각 형성시키고, 그 공기구멍과 연한 프레임의 내측에는 쿠션재를 설치시키되 쿠션재의 상하부에는 진동판을 각각 설치시키는 한편, 그 진동판에는 압전소자를 각각 부착설치시키며, 그 압전소자의 사이에는 브라켓을 설치시킴과 더불어 상기 프레임의 외측면에는 보호망을 각각 설치시킨 평면스피커을 제공하는데 그 목적이 있다.Therefore, the present invention solves the problems described above, making the speaker thin and at the same time improving the reproduction ability of the mid and bass, as well as the two frame to listen to the playback sound from the front and rear positions of the speaker The air holes are tapered, respectively, and cushioning materials are provided inside the air holes and the soft frame, and vibration plates are provided on the upper and lower portions of the cushioning material, respectively, and piezoelectric elements are attached to the vibration plates, respectively, between the piezoelectric elements. In addition to installing the bracket, the object of the present invention is to provide a planar speaker with a protective net installed on the outer surface of the frame.

이하 본 발명의 구성 및 작용효과를 첨부된 예시도면에 의거 상세히 설명하면 다음과 같다.Hereinafter will be described in detail with reference to the accompanying drawings and the configuration and effect of the present invention.

본 발명은 프레임(1)(1')에 공기구멍(2)를 테이퍼지게 각각 형성시키고, 상기 공기구멍(2)과 연한 프레임(1)(1')의 내측에는 쿠션재(3)를 설치시키되 쿠션재(3)의 상, 하부에는 진동판(4)을 각각 부착 설치시키는 한편, 그 진동판(4)에는 압전소자(5)를 각각 부착설치시키며, 그 압전소자(5)의 사이에는 브라켓(6)을 설치시킴과 더불어 상기 프레임(1)(1')의 외측면에는 보호망(7)을 각각 설치시킨 구조로 되어있다.In the present invention, the air holes 2 are tapered in the frames 1 and 1 ', respectively, and the cushioning material 3 is installed inside the air holes 2 and the light frame 1 and 1'. The diaphragm 4 is attached to the upper and lower portions of the cushioning material 3, respectively, and the piezoelectric element 5 is attached to the diaphragm 4, and the bracket 6 is disposed between the piezoelectric elements 5, respectively. In addition to the installation, the outer surface of the frame (1) (1 ') has a structure in which protective nets (7) are respectively installed.

미설명부호 8은 걸림턱, 9는 트랜스이다.Reference numeral 8 is a locking step, and 9 is a trance.

상기와 같은 구조로 된 본 발명은 피스톤운동이 아닌 분할진동을 이용한 음의 재생장치로서, 제1도에 도시된 바와같이 2개의 프레임(1)(1')에다 공기구멍(2)을 진동판(4)사이로 향하도록 테이퍼지게 각각 형성하여 밀폐된 진동판(4) 사이내의 공기가 유통되도록 함으로써 진동판(4)이 자유롭게 진동할 수 있도록 한 것이고, 상기 공기구멍(2)과 연한 프레임(1)(1')의 내측에는 쿠션재(3)를 설치하여 진동판(4)을 지지할 수 있도록 할뿐 아니라 밀폐된 진동판(4) 사이내의 공기량이 쿠션재(3)를 통하여 조절될 수 있도록 한 것이다.The present invention having the structure as described above is a sound reproducing apparatus using divided vibrations rather than piston movements, and as shown in FIG. 1, the air holes 2 are provided in two frames 1 and 1 'as shown in FIG. 4) tapered to face each other so that the air in the sealed diaphragm 4 can flow, allowing the diaphragm 4 to vibrate freely, and the air hole 2 and the light frame 1 (1). ') Inside the cushion member (3) is installed to support the diaphragm (4) as well as to allow the amount of air between the sealed diaphragm (4) can be adjusted through the cushion material (3).

또한 상기 쿠션재(3)의 상, 하부에 각각 설치된 진동판(4) 중앙부에는 압전소자(5)를 부착 설치하여 압전소자(5)의 진도에 의해 진동판(4)이 진동하도록 하였는데, 상기 압전소자(5)를 사이에는 브라켓(6)이 압전소자(5)의 중심부를 받쳐주도록 하여 압전소자(5)의 외주부가 크게 진동하도록 한 것이다.In addition, a piezoelectric element 5 is attached to a central portion of the diaphragm 4 provided at the upper and lower portions of the cushioning material 3, respectively, so that the diaphragm 4 vibrates due to the piezoelectric element 5's magnitude. 5) between the brackets 6 to support the center of the piezoelectric element 5 so that the outer peripheral portion of the piezoelectric element 5 to vibrate greatly.

한편, 제2도는 본 발명에 따른 평면스피커의 다른 실시예로서, 이는 공기구멍(2)을 갖춘 1개의 프레임(1)상하면에 걸림턱(8)을 형성하여 진동판(4)을 상기 걸림턱(8)에 부착 설치시킨 평면 스피커이며, 본 발명에 따른 평면스피커의 저음 및 고음의 주파수대역은 진동판(4)의 두께와 크기로 조정할 수 있는 것익도, 특히 압전소자(5)의 임피던스는 매우 크므로 양호한 출력음압 특성을 얻기 위해 제3도와 같이 트랜스(9)로 신호를 증폭시켜 임피던스를 매칭시켜 주도록 된 것이다.On the other hand, Figure 2 is another embodiment of a flat speaker according to the present invention, which is formed on the upper and lower surfaces of one frame (1) having an air hole (2) to make the diaphragm (4) the engaging jaw ( 8) is a flat speaker attached to the installation, the frequency band of the bass and treble of the flat speaker according to the present invention can be adjusted to the thickness and size of the diaphragm 4, in particular, the impedance of the piezoelectric element 5 is very large In order to obtain good output sound pressure characteristics, the signal is amplified by the transformer 9 to match impedance as shown in FIG. 3.

제4도는 본 발명에 따른 평면스피커의 특성그래프이고, 제5도는 종래 스피커의 특성그래프인데, 이는 본 발명에 따른 평면스피커가 고음 뿐만 아니라 중음 및 저음등 전대역에 걸쳐 재생됨을 보여주고 있다.FIG. 4 is a characteristic graph of a planar speaker according to the present invention, and FIG. 5 is a characteristic graph of a conventional speaker, which shows that the planar speaker according to the present invention is reproduced not only in high frequencies but also in mid and low frequencies.

이와같은 본 발명은 진동판을 평면으로 형성하여 스피커의 슬림(silm)화를 이룰 수 있을 뿐만 아니라 박형으로 인한 음질의 손상을 없앨 수 있으며, 저가의 압전소자(5)를 이용함으로써 단가를 낮출수 있는 동시에 2중으로 진동판(4)을 설치하여 전후 방향에서 동일한 형태의 재생음을 청취할 수 있고, 다이나믹스피커와 비교해 손색이 없는 음역을 가질 뿐만 아니라 다이나믹스피커에 비해 구조가 훨씬 간단한 특징이 있다.The present invention as described above can form a diaphragm in the plane to achieve a slim (silm) of the speaker as well as to eliminate the damage of sound quality due to the thin, it is possible to lower the unit cost by using a low-cost piezoelectric element (5) At the same time, by installing the diaphragm 4 in a double way, it is possible to listen to the same type of reproduction sound in the front-rear direction, not only has a comparable range compared to the dynamic speaker, but also has a much simpler structure than the dynamic speaker.

Claims (1)

진동판에 압전소자가 부착된 평면스피커에 있어서, 프레임(1)(1')에 공기구멍(2)을 테이퍼지게 각각 형성시키고, 상기 공기구멍(2)과 연한 프레임(1)(1')의 내측에는 쿠션재(3)의 상, 하부에는 진동판(4)을 각각 설치시키는 한편, 그 진동판(4)에는 압전소자(5)를 각각 부착 설치시키며, 그 압전소자(5)의 사이에는 브라켓(6)을 설치시킴과 더불어 상기 프레임(1)(1')의 외측면에는 보호망(7)을 각각 설치시킨 것을 특징으로하는 평면스피커.In a planar speaker having a piezoelectric element attached to the diaphragm, the air holes 2 are tapered in the frames 1 and 1 ', respectively, and the air holes 2 and the light frames 1 and 1' The diaphragm 4 is provided on the inner side and the lower part of the cushioning material 3, respectively, while the piezoelectric element 5 is attached to the diaphragm 4, and the bracket 6 is provided between the piezoelectric elements 5, respectively. And a protective net (7) on each of the outer surfaces of the frame (1) (1 ').
KR1019860005275A 1986-06-30 1986-06-30 Speaker with plane diaphragm KR890002814B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019860005275A KR890002814B1 (en) 1986-06-30 1986-06-30 Speaker with plane diaphragm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019860005275A KR890002814B1 (en) 1986-06-30 1986-06-30 Speaker with plane diaphragm

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KR880001170A KR880001170A (en) 1988-03-31
KR890002814B1 true KR890002814B1 (en) 1989-07-31

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KR1019860005275A KR890002814B1 (en) 1986-06-30 1986-06-30 Speaker with plane diaphragm

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