WO2007048281A1 - Nouvelle colonne - Google Patents

Nouvelle colonne Download PDF

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Publication number
WO2007048281A1
WO2007048281A1 PCT/CN2005/002037 CN2005002037W WO2007048281A1 WO 2007048281 A1 WO2007048281 A1 WO 2007048281A1 CN 2005002037 W CN2005002037 W CN 2005002037W WO 2007048281 A1 WO2007048281 A1 WO 2007048281A1
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WO
WIPO (PCT)
Prior art keywords
circuit
signal
sound
fixed
power amplifier
Prior art date
Application number
PCT/CN2005/002037
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English (en)
French (fr)
Inventor
Shuzhe Fang
Original Assignee
Shuzhe Fang
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 Shuzhe Fang filed Critical Shuzhe Fang
Publication of WO2007048281A1 publication Critical patent/WO2007048281A1/zh

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Classifications

    • 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
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/26—Spatial arrangements of separate transducers responsive to two or more frequency ranges

Definitions

  • the present invention relates to an audio device, and more particularly to a novel sound column.
  • speakers used in sound reproduction systems, especially audio equipment use a wide variety of sound columns and various structural forms, each having advantages and disadvantages. Speakers with good sound quality are often bulky and cumbersome, and they are often unsatisfactory to use. Most of the used sound columns are just a type of speaker. Since it does not have an amplifier itself, it is inconvenient to use more external lines when using it.
  • the invention is a novel sound column, which is mainly composed of an external sound source part, a box body, a middle and high sound speaker, a panel, a power amplifier board, a sound column bottom platform and a air duct; the box body is a columnar body, and the top thereof is open upward.
  • the external sound source part is sleeved on the open end of the top of the box;
  • the middle and high sound speaker is mounted on the panel, and the panel is fastened in the box
  • the cavity is connected to the opening;
  • the power amplifier board is installed in the inner cavity of the box;
  • the sound column bottom is sleeved in the lower part of the box;
  • the air duct is installed in the box body, between the middle tweeter and the sound column bottom.
  • the duct has a nautilus shape.
  • a flip cover is hinged at the open end of the top of the cabinet, and the flip cover can be fastened to the inner cavity of the cabinet.
  • the external sound source part is mainly composed of an MP3 seat, an interface conversion board, a rubber ring, a fixed joint and a fixed joint board;
  • the MP3 seat has a cavity for accommodating an MP3 or a mobile phone, and the cavity can be played according to audio.
  • the type of the device is changed, and the lower end is sleeved on the fixed joint plate; the interface transfer plate can be replaced according to different types of audio player interface;
  • the upper joint plate is provided with an upward stud;
  • the PCB on the fixed connector is provided with a connection hole through which the screw passes; when the fixed connector is entirely placed on the fixed connector plate, the screw gap passes through the connection hole on the fixed connector PCB board and is sleeved on the fixed connector plate.
  • the rubber ring of the column is screwed to the stud of the fixed joint plate, and the fixed joint and the fixed joint plate are slightly misaligned in the horizontal plane.
  • the external sound source part is mainly composed of an MP3 seat, an interface conversion board, a rubber ring, and a fixed connection.
  • a head and a fixed joint plate the MP3 seat has a cavity for accommodating an MP3 or a mobile phone, the lower end of which is sleeved on the fixed joint plate;
  • the fixed joint plate is provided with an upward stud;
  • the PCB on the connector is provided with a connection hole through which the screw passes; when the fixed connector is entirely placed on the fixed connector plate, the screw gap passes through the connection hole on the PCB of the fixed connector and the protrusion of the protrusion on the fixed connector plate
  • the rubber ring is screwed onto the stud of the fixed joint plate, and the fixed joint and the fixed joint plate are slightly misaligned in the horizontal plane.
  • the external sound source part further includes an MP 3 sheath, a ⁇ 2. 5 / ⁇ 3. 5 mini plug, a fixed PCB board, and a spacer; the MP3 sheath is fixed in a cavity for accommodating the MP3; ⁇ 2. 5/ ⁇ 3. 5
  • the mini plug is inserted into the through hole of the MP3 seat;
  • the fixed PCB board is provided with elastic cards on both sides and two protruding columns extending downward, and the slot is provided in the middle portion;
  • the elastic card cards on both sides of the fixed PCB board are placed in the longitudinal long slots on the wall of the MP3 cavity, and the slots on the fixed PCB board are sleeved on the interface conversion board, and the posts of the fixed PCB board pass through the interface.
  • the through holes and the spacers on both sides of the plate, the lower end of the spacer abuts against the end face of the fixed joint.
  • the sound column bottom platform is composed of a foot joint, a woofer, a base cover and a bottom platform; the woofer is placed from the bottom to the middle of the foot connector and the sound film of the woofer is exposed downward.
  • the foot connector is connected to the upper end surface of the upper cover of the base through the legs of the base, so that the exposed woofer sound film and the upper end surface of the upper cover of the base have a certain space, and an external power supply is provided on the leg.
  • the copper terminal is provided on the base cover, and the copper terminal is provided with a copper plug that can be inserted and connected; the upper cover of the base is fastened on the base, and a heat can be installed between the upper cover and the bottom of the base.
  • the storage space of the device is provided with an opening communicating with the storage space at a position opposite to the sound diaphragm of the bass speaker in the middle of the cover, and a plurality of air outlet holes are formed in the base housing.
  • the mid-high pitch speaker consists of a tweeter and four mid-range speakers that can simultaneously play the left and right channel treble signals.
  • the voice coil in the tweeter is composed of a circular cylinder made of an insulating material and a coil, and the coil has two sets, and the two sets of coils are wound together on a circular cylinder and have four taps.
  • the box body is made of aluminum metal material, and the power amplifier board is mounted on the inner wall of the box body.
  • the power amplifier board is mainly composed of an input selection circuit, a preamplifier circuit, a control chip, a signal detection/amplification circuit, a power amplifier circuit, and a power control circuit; the input end of the control chip is connected to the signal detection/amplification circuit, The output end of the control chip is connected to the power control circuit, and the control chip controls the switching of the power control relay according to the detection signal of the signal detection/amplification circuit; the input selection circuit selects the input signal according to the external signal and transmits the audio signal to the preamplifier circuit.
  • the preamplifier circuit power-amplifies the input signal, and then sends the signal to the power amplifier circuit of the latter stage to amplify the signal and transmit it to the middle and high-pitched speakers.
  • the power amplifier board further comprises a preamplifier/low pass processing circuit, a subwoofer rear stage power amplifying circuit and a right channel load detecting circuit; and the right channel load detecting circuit
  • the input end is connected to the output end of the control chip.
  • the control chip controls the switching of the relay according to the signal fed back by the right channel load detecting circuit, thereby switching the left and right channels of the main column to the main sound.
  • the column is the left channel, and the external passive sound column is the right channel;
  • the input selection circuit selects the input signal according to the external signal and transmits the audio signal to the preamplifier/low pass processing circuit and the preamplifier circuit;
  • the amplifying/low-pass processing circuit performs power amplification and low-pass filtering on the input signal, and then sends the low-frequency signal to the subwoofer power amplifier circuit for signal amplification and transmission to the woofer.
  • the present invention has the following advantages:
  • the present invention integrates all of the components in the cabinet, it is composed of a top flip, an MP3 input conversion interface, a mid-high-pitched speaker, a power amplifier, a subwoofer, and the like.
  • the tweeter is a double voice coil structure.
  • the power amplifier board uses the control chip control relay to switch the left and right channels of the external sound column.
  • the nautilus-shaped duct is small in size and can obtain an effective length.
  • the fixed joint and the fixed joint plate in the external sound source part of the present invention are connected by a rubber ring, which is a flexible connection, and the connection part is not easily damaged.
  • the speaker of the invention is installed in the bottom of the sound column, and utilizes the gas flow driven by the vibration of the sound film on the speaker to disperse the heat generating device (such as a transformer) installed in the storage space between the upper cover and the base of the base. The heat is brought out.
  • the heat generating device such as a transformer
  • the power amplifier board is closely attached to the box, and the metal is easy to conduct heat, so that the heat of the power amplifier board can be dissipated with the metal box, and the heat is solved skillfully.
  • the heat dissipation problem of the device is good.
  • FIG. 1 is an exploded perspective view of the present invention
  • Figure 2 is an exploded perspective view of the external sound source portion of the present invention
  • FIG. 3 is a structural diagram of the voice coil of the tweeter of the present invention.
  • Figure 4 is a plan view of the air duct of the present invention.
  • Figure 5 is an isometric view of the duct of the present invention.
  • Figure 6 is a view taken along the line A in Figure 1;
  • Figure 7 is a circuit block diagram of a first embodiment of the power amplifier board of the present invention.
  • Figure 8 is a circuit diagram of a first embodiment of the power amplifier board of the present invention
  • Figure 9 is a circuit block diagram of a second embodiment of the power amplifier board of the present invention
  • Figure 10 is a circuit diagram of a second embodiment of the power amplifier board of the present invention.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1 , the present invention is a novel sound column, which mainly comprises an external sound source part 1, a box body 2, a middle and high sound speaker 3, a panel 4, a power amplifier board 5, a sound column bottom stage 6 and a duct. 7 composition.
  • the box body 2 is a columnar body made of a metal material (such as an aluminum alloy), the top of which is open upwardly and defines an opening 22 communicating with the inner cavity 21 of the casing 2 on the upper side wall;
  • the sound source unit 1 is integrally inserted from the top open end of the box and placed in the inner cavity 21 of the box 2; the middle and high sound speaker 3 is mounted on the panel 4, and the panel 4 is fastened to the inner cavity 21 of the box 2.
  • the power amplifier board 5 is mounted on the wall of the cabinet body.
  • the sound column base 6 is sleeved on the lower part of the casing 2 and serves as a foot.
  • a flip cover 23 is hinged at the top open end of the casing 2, and the flip cover 23 is fastened to the inner cavity 21 of the casing 2.
  • the top of the casing 1 can be opened or closed as needed to put or remove the MP3.
  • the air duct 7 is installed in the box 2, between the middle tweeter 3 and the sound column base 6, and functions to isolate the middle tweeter and the woofer (ie, the partition), and the duct 7 has a nautilus shape. (As shown in Figure 4 and Figure 5), the outer size is small, and the length required for the bass vibration can still be obtained.
  • the external sound source part 1 is composed of an MP3 sheath 11, an MP 3 seat 12, a ⁇ 2. 5/ ⁇ 3. 5 mini plug 13, a fixed PCB board 14, an interface conversion board 15, and a spacer 16
  • the rubber ring 17, the fixed joint 18, and the fixed joint plate 19 are composed.
  • the MP3 holder 12 has a cavity 121 for accommodating an MP3 or a mobile phone MP3.
  • the cavity can be changed according to the type of the audio player, and the lower end is sleeved on the fixed connector board 19; the interface conversion board 15 can be replaced according to different types of audio player interface;
  • the MP3 sheath 11 is fixed in the cavity 121 of the accommodating MP3; the ⁇ 2. 5/ ⁇ 3. 5 mini plug 13 is actively worn.
  • the interface conversion board 15 is inserted into the plug 183 of the fixed connector 18;
  • the two sides of the PCB board 14 are provided with an elastic card 141 and two protrusions 14 2 extending downwardly, and a slot 143 is formed in the middle portion thereof.
  • the elastic card 141 on both sides of the fixed PCB board 14 is stuck in the cavity of the MP3 socket 12 In the longitudinal long groove 123 of the wall, the slot 143 of the fixed PCB board 14 is sleeved on the interface conversion board 15, and the protrusion 142 of the fixed PCB board 14 passes through the through hole 151 and the spacer 16 on both sides of the interface conversion board 15. The lower end surface of the spacer 16 abuts against the end surface of the fixed joint 18.
  • An upwardly protruding post 191 is disposed on the fixed joint plate 19; the PCB board 181 of the fixed joint 18 is provided with a connecting hole 182 through which the screw 10 passes; when the fixed joint 18 is entirely placed on the fixed joint plate 19 , the gap of the screw 10 passes through the fixed joint 18 PCB board 181
  • the connecting hole 182 and the rubber ring 17 of the protruding post 191 of the fixing joint plate 19 are screwed onto the protruding post 191 of the fixed joint plate 19, and the fixed joint 18 and the fixed joint plate 19 can be slightly dislocated on the horizontal surface after assembly. . Since the fixed joint 18 and the fixed joint plate 19 are flexibly connected, the fixed joint 18 is not easily damaged.
  • the column base 6 is composed of a foot joint 61, a woofer 62, a base cover 63 and a base 64.
  • the woofer 62 is sleeved from the bottom to the middle of the foot connector 61 and the sound film of the woofer 62 is exposed downward; the foot connector 61 is connected to the base cover 63 by the legs 611 at the periphery thereof.
  • the upper end surface has a certain space for the exposed woofer sound film and the upper end surface of the base upper cover 63.
  • the leg 611 is provided with a copper terminal 66 of an external power supply, and the base cover 63 and the copper terminal 66 correspond to each other.
  • a copper plug 67 is provided which can be inserted into the copper terminal 66.
  • the copper plug 67 is connected to the circular transformer 65 by a wire.
  • the foot connector 61 is connected to the base cover 63 through the three legs 611 at the periphery thereof, the copper terminal 66
  • the copper plug 67 is inserted into the circular transformer 65; the base upper cover 63 is fastened to the base 64, and a storage space for mounting the heat generating device is formed between the base cover 63 and the base 64.
  • the circular transformer 65 is mounted in the storage space, and an opening 631 communicating with the storage space is provided in the middle of the base cover 63 opposite to the sound film of the woofer 62, on the bottom 64 housing.
  • a plurality of air outlet holes 641 are opened.
  • the mid-range speaker 3 is composed of a tweeter 31 and four mid-range speakers 32 which can simultaneously play left and right channel tweeter signals.
  • the voice coil 311 in the tweeter 31 is composed of a circular cylinder 3111 made of an insulating material and a coil 3112.
  • the coils 3112 have two sets, and the two sets of coils are wound together.
  • the circular cylinder 3111 has four taps Al, A2, Bl, B2.
  • the first embodiment of the power amplifier board 5 of the present invention is mainly composed of an input selection circuit 51 (PT2313L), a preamplifier circuit 52 (TL084), and a control chip 53 (HT46R47).
  • the amplifier circuit 54 (LM324), the power amplifier circuit 55 (LM1876), and the power control circuit 56 are provided.
  • the input end of the control chip 53 is connected to the signal detecting/amplifying circuit 54, and the output end of the control chip 53 is connected to the power control circuit 56.
  • the control chip 53 controls the relay J1 in the power control circuit 56 according to the detection signal of the signal detecting/amplifying circuit 54. Switching; the input selection circuit 51 selects an input signal according to the difference of the external signal and transmits the audio signal to the preamplifier circuit 52; the preamplifier circuit 52 performs power amplification on the input signal, and then sends the signal to the power amplifier circuit of the subsequent stage.
  • the signal is amplified by 55 and transmitted to the middle and high-range speakers L and R.
  • the second embodiment of the present invention increases the bass output unit and can externally connect an active subwoofer or another sound column.
  • the power amplifier board 5' circuit of the present invention is mainly composed of an input selection circuit 51, (PT2313L), a preamplifier/low pass processing circuit 52, (TL084), preamplification/ Low-pass processing circuit 53, (LM324), control chip 54, (HT46R47), signal detection/amplification circuit 55, (LM324), power amplifier circuit 56 (LM1876), subwoofer power amplifier circuit 57, ( LM1875), power control circuit 58, and right channel load detection circuit 59, (LM4558).
  • the control chip 54 is connected to the signal detecting/amplifying circuit 55, and the output of the control chip 54 is connected to the power control circuit 58' and the right channel load detecting circuit 59, and the control chip 54 is controlled according to the right channel.
  • the detecting circuit 59 feeds back the presence or absence of the external sound column detection signal, and controls the power supply control circuit 58 to switch the relay J2 to realize the switching of the left and right channels of the sound column speaker, that is, when another passive sound column is externally connected, the power amplifier
  • the board 5 automatically switches the left and right channels of the main column to the main column 100, and is the left channel, and the external passive column 101 is the right channel.
  • the input selection circuit 51' selects the input signal according to the difference of the external signal and transmits the audio signal to the preamplifier/low pass processing circuit 52, and the preamplifier circuit 53, the preamplifier/low pass processing circuit 52, the input
  • the signal is subjected to power amplification and low-pass filtering, and then the low-frequency signal is sent to the subwoofer rear stage power amplifier circuit 57, and the signal is amplified and transmitted to the woofer SW;
  • the preamplifier circuit 53 performs power amplification on the input signal, and then The signal is sent to the power amplifier circuit 56 of the subsequent stage, and the signal is amplified and transmitted to the middle and high-range speaker R.

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  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)

Description

新型音柱 技术领域 本发明涉及一种音响器材， 特别是涉及一种新型音柱。 背景技术 目前放声系统使用的音箱， 特别是音响设备使用的音柱种类很 多， 结构形式各异， 各有优缺点。 音质良好的音箱， 往往体积庞大、 笨重， 使用起来往往不尽人意。 习用的音柱大都只是一种音箱， 由于 其本身并不带放大器， 使用时需外接较多的线路， 较不方便。 发明内容 本发明目的在于提供一种体积小、 音质较为良好、 易于散热、 可 播放 MP 3和手机 MP 3的高质量新型音柱。
为实现上述目的， 本发明的技术解决方案是：
本发明是一种新型音柱， 它主要由外接音源部、 箱体、 中高音扬 声器、 面板、 功放板、 音柱底台和风管组成； 所述的箱体为柱状体， 其顶部向上敞开并在上部侧壁上开设一与箱体内腔相通的开口；所述 的外接音源部套置于箱体的顶部敞开端；所述的中高音扬声器安装在 面板上， 面板扣合在与箱体内腔相通的开口上； 功放板安装在箱体内 腔内； 所述的音柱底台套接在箱体的下部； 所述的风管安装箱体内、 中高音扬声器和音柱底台之间。
所述的风管呈鹦鹉螺状。
在箱体的顶部敞开端铰接一个翻盖， 该翻盖可扣合在箱体内腔 上。
所述的外接音源部主要由 MP3座、 接口转换板、 橡胶圈、 固定接 头、固定接头板组成；所述的 MP3座具有一可容置 MP3或手机的腔体， 该腔体可根据音频播放器的类型进行变换，其下端套接在固定接头板 上；所述的接口转採板可根据不同类型的音频播放器接口方式进行更 换； 在固定接头板上设有向上的凸柱； 所述的固定接头的 PCB板上设 有供螺钉穿过的连接孔； 在固定接头整体放在固定接头板上时， 螺钉 间隙穿过固定接头 PCB板上的连接孔和套接在固定接头板上凸柱的 橡胶圈后螺接在固定接头板的凸柱上，固定接头和固定接头板可在水 平面上略微错位。
所述的外接音源部主要由 MP3座、 接口转换板、 橡胶圈、 固定接 头、固定接头板组成；所述的 MP3座具有一可容置 MP3或手机的腔体， 其下端套接在固定接头板上； 在固定接头板上设有向上的凸柱； 所述 的固定接头的 PCB板上设有供螺钉穿过的连接孔；在固定接头整体放 在固定接头板上时，螺钉间隙穿过固定接头 PCB板上的连接孔和套接 在固定接头板上凸柱的橡胶圈后螺接在固定接头板的凸柱上， 固定接 头和固定接头板可在水平面上略微错位。
所述的外接音源部还包括 MP 3护套、 Φ 2. 5 / Φ 3. 5迷你插头、 固 定 PCB板、 间隔柱； 所述的 MP3护套固定于容置 MP3的腔体内； 所述 的 Φ 2. 5/ Φ 3. 5迷你插头活动穿置于 MP3座的通孔内；所述的固定 PCB 板两侧设有弹性卡片和向下延设两凸柱， 其中部设有槽孔； 装配时， 固定 PCB板两侧弹性卡片卡置于 MP3座腔体壁上的纵向长槽内，固定 PCB板上的槽孔套接在接口转换板上， 固定 PCB板的凸柱穿过接口转 换板两侧通孔和间隔柱， 间隔柱的下端面抵靠在固定接头的端面上。
所述的音柱底台由脚座连接件、低音扬声器、底座上盖和底台组 成；所述的低音扬声器自下而上套置在脚座连接件中部且低音扬声器 的音膜外露朝下；所述的脚座连接件通过其周边的支脚连接在底座上 盖的上端面，使外露的低音扬声器音膜与底座上盖的上端面具有一定 的相隔空间， 在支脚上设有外接电源的铜端子， 在底座上盖上、 铜端 子对应处设有可与插接的铜插头； 所述的底座上盖扣合在底台上， 在 底座上盖和底台之间形成一个可安装发热器件的置物空间，在底座上 盖中部、 与低音杨声器音膜相对处开设有一个与置物空间连通的开 口， 在底台壳体上开设多个出气通孔。'
所述的中高音扬声器由一个可同时播放左右声道高音信号的高 音扬声器和四个中音扬声器组成。
所述的高音扬声器中的音圈由绝缘材料制成的圆形筒和线圈组 成， 所述的线圈有两组， 该两组线圈一起缠绕在圆形筒上且具有四个 抽头。
所述的箱体由铝金属材料制成 , 功放板安装在箱体内腔壁上。 所述的功放板主要由输入选择电路、 前置放大电路、 控制芯片、 信号检测 /放大电路、 后级功率放大电路、 电源控制电路组成； 所述 的控制芯片输入端连接信号检测 /放大电路， 控制芯片的输出端连接 电源控制电路， 控制芯片根据信号检测 /放大电路的检测信号控制电 源控制继电器的切换；输入选择电路根据外接信号的不同进行输入信 号选择并将音频信号传送到前置放大电路；前置放大电路对输入的信 号进行功率放大，再将信号送至后级功率放大电路进行信号放大后传 送给中、 高音扬声器。
所述的功放板还包括前级放大 /低通处理电路、 低音炮后级功率 放大电路和右声道负载检测电路组成；所述的右声道负载检测电路的 输入端连接控制芯片的输出端， 当外接另一无源音柱时，控制芯片根 据右声道负载检测电路所反馈的信号控制继电器的切换，从而将主音 柱的左、 右声道切换为主音柱为左声道， 外接无源音柱为右声道； 输 入选择电路根据外接信号的不同进行输入信号选择并将音频信号传 送到前级放大 /低通处理电路和前置放大电路；前级放大 /低通处理电 路对输入的信号进行功率放大、低通滤波，再将低频信号送至低音炮 后级功率放大电路进行信号放大后传送给低音扬声器。
采用上述方案后， 本发明具有以下优点:
1、 结构紧凑， 体积小。 由于本发明将所有的元器件都集合在箱 体内， 由顶部翻盖、 MP3输入转换接口、 中高音扬声器、 功率放大器、 超重低音等组成的整体。
2、 高音扬声器为双音圈结构。
3、 功放板采用控制芯片控制继电器进行外接音柱的左右声道的 切换。
4、 采用鹦鹉螺状的风管体积小， 又能获得有效的长度。
5、 本发明外接音源部中的固定接头与固定接头板采用橡胶圈过 渡连接， 为柔性连接， 连接部位不易损坏。
6、 且在外接音源部内还设有 Φ2. 5/Φ 3. 5 迷你插头、 可更换的 接头转换板， 可与多种规格音源（IP0D、 手机 MP3、 普通 MP3 )连接， 使用起来十分方便。
7、 散热效果好。 本发明扬声器安装在音柱底台内， 巧妙利用了 扬声器上音膜振动所带动的气体流动，将安装在底座上盖和底座之间 的置物空间内的发热器件（如： 变压器）所散发的热量带出。
8、 采用具有较好散热效果的金属件作为箱体材料， 将功放板紧 贴箱体安装， 利用金属易于导热的特性，使得功放板的热量可随金属 箱体散发出去， 巧妙的解决了发热器件的散热问题， 散热效果好。
下面结合附图和具体实施例对本发明作进一步的说明。 附图说明 图 1是本发明的立体分解图；
图 2是本发明外接音源部的立体分解图；
图 3是本发明高音扬声器的音圈结构图；
图 4是本发明风管的俯视图；
图 5是本发明风管的轴测图；
图 6是图 1的 A向视图；
图 7是本发明功放板第一个实施例的电路框图；
图 8是本发明功放板第一个实施例的电路图； 图 9是本发明功放板第二个实施例的电路框图;
图 10是本发明功放板第二个实施例的电路图。 具体实施方式 如图 1所示， 本发明是一种新型音柱， 它主要由外接音源部 1、 箱体 2、 中高音扬声器 3、 面板 4、 功放板 5、 音柱底台 6和风管 7组 成。
所述的箱体 2为柱状体， 由金属材料（如： 铝合金）制成， 其顶 部向上敞开并在上部侧壁上开设一与箱体 2内腔 21相通的开口 22; 所述的外接音源部 1整体自箱体的顶部敞开端穿入，套置于箱体 2内 腔 21内； 所述的中高音扬声器 3安装在面板 4上， 面板 4扣合在与 箱体 2内腔 21相通的开口 22上； 为了更好的散热， 所述的功放板 5 安装在箱体内腔壁上。 所述的音柱底台 6套接在箱体 2的下部， 兼做 脚座。 在箱体 2的顶部敞开端铰接一个翻盖 23 , 该翻盖 23可扣合在 箱体 2内腔 21上， 可根据需要打开或封闭箱体 1的顶部， 放入或取 出 MP3。 所述的风管 7安装箱体 2内、 中高音扬声器 3和音柱底台 6 之间， 起到隔离中高音扬声器与低音扬声器（即隔板）的作用， 且该 风管 7呈鹦鹉螺状（如图 4、 图 5所示）， 外尺寸小， 仍能获得低音 偕振所需的长度。
如图 2所示， 所述的外接音源部 1由 MP3护套 11、 MP 3座 12、 Φ 2. 5/Φ 3. 5迷你插头 13、 固定 PCB板 14、 接口转换板 15、 间隔柱 16、 橡胶圈 17、 固定接头 18、 固定接头板 19组成。 所述的 MP3座 12具有一可容置 MP3或手机 MP3的腔体 121 ,该腔体可根据音频播放 器的类型进行变换， 其下端套接在固定接头板 19上； 所述的接口转 换板 15可根据不同类型的音频播放器接口方式进行更换；所述的 MP3 护套 11 固定于该容置 MP3的腔体 121内； 所述的 Φ 2. 5/ Φ 3. 5迷你 插头 13活动穿置于 MP3座的通孔 122内， 并可从该通孔 122内抽拉 出来与播放器 20插接； 所述的接口转换板 15插接在固定接头 18的 插头 183上； 所述的固定 PCB板 14两侧设有弹性卡片 141和向下延 设两凸柱 142 , 其中部设有槽孔 143; 装配时， 固定 PCB板 14两侧弹 性卡片 141卡置于 MP3座 12腔体 121壁上的纵向长槽 123内， 固定 PCB板 14上的槽孔 143套接在接口转换板 15上， 固定 PCB板 14的 凸柱 142穿过接口转换板 15两侧通孔 151和间隔柱 16 , 间隔柱 16 的下端面抵靠在固定接头 18的端面上。
在固定接头板 19上设有向上的凸柱 191 ; 所述的固定接头 18的 PCB板 181上设有供螺钉 10穿过的连接孔 182; 在固定接头 18整体 放在固定接头板 19上时，螺钉 10间隙穿过固定接头 18PCB板 181上 的连接孔 182和套接在固定接头板 19上凸柱 191的橡胶圈 17后螺接 在固定接头板 19的凸柱 191上， 装配后固定接头 18和固定接头板 19可 ^水平面上略微错位。 由于固定接头 18与固定接头板 19为柔 性连接， 固定接头 18不易损坏。
如图 1所示， 所述的音柱底台 6由脚座连接件 61、 低音扬声器 62、 底座上盖 63和底台 64组成。 所述的低音扬声器 62 自下而上套 置在脚座连接件 61中部且低音扬声器 62的音膜外露朝下；所述的脚 座连接件 61通过其周边的支脚 611连接在底座上盖 63的上端面，使 外露的低音扬声器音膜与底座上盖 63 的上端面具有一定的相隔空 间， 在支脚 611上设有外接电源的铜端子 66 , 在底座上盖 63上、 铜 端子 66对应处设有可与铜端子 66插接的铜插头 67 , 铜插头 67通过 导线连接圆形变压器 65 ,当脚座连接件 61通过其周边的三个支脚 611 连接在底座上盖 63时， 铜端子 66与铜插头 67插接， 将电流导入圆 形变压器 65; 所述的底座上盖 63扣合在底台 64上， 在底座上盖 63 和底台 64之间形成一个可安装发热器件的置物空间， 圆形变压器 65 就安装在该置物空间内， 在底座上盖 63中部、 与低音扬声器 62音膜 相对处开设有一个与置物空间连通的开口 631， 在底台 64 壳体上开 设多个出气通孔 641。
所述的中高音扬声器 3 由一个可同时播放左右声道高音信号的 高音扬声器 31和四个中音扬声器 32组成。 如图 3所示， 所述的高音 扬声器 31中的音圈 311由绝缘材料制成的圆形筒 3111和线圏 3112 组成， 所述的线圏 3112有两组， 该两组线圈一起缠绕在圆形筒 3111 上且具有四个抽头 Al、 A2、 Bl、 B2。
如图 7、 图 8所示， 本发明功放板 5第一个实施例， 它主要由输 入选择电路 51 (PT2313L)、 前置放大电路 52 (TL084)、 控制芯片 53 ( HT46R47 ), 信号检测 /放大电路 54 (LM324)、 后级功率放大电路 55 (LM1876)、 电源控制电路 56组成。
所述的控制芯片 53输入端连接信号检测 /放大电路 54， 控制芯 片 53的输出端连接电源控制电路 56, 控制芯片 53根据信号检测 /放 大电路 54的检测信号控制电源控制电路 56中继电器 J1的切换； 输 入选择电路 51根据外接信号的不同进行输入信号选择并将音频信号 传送到前置放大电路 52; 前置放大电路 52对输入的信号进行功率放 大， 再将信号送至后级功率放大电路 55进行信号放大后传送给中、 高音扬声器 L、 R。
如图 9、 图 10所示， 为了进一步提高音盾， 本发明的第二个实 施例， 增加低音输出单元， 并可外接有源的超重低音音箱或另一个音 柱。 为此， 本发明的功放板 5 ' 电路主要由输入选择电路 51， (PT2313L) , 前级放大 /低通处理电路 52， （TL084)、 前置放大 / 低通处理电路 53， （LM324 )、 控制芯片 54， ( HT46R47 ), 信号检测 / 放大电路 55， （LM324)、后级功率放大电路 56， （LM1876)、低音炮后 级功率放大电路 57， （LM1875)、 电源控制电路 58， 和右声道负载检 测电路 59， （LM4558)组成。
所述的控制芯片 54， 输入端连接信号检测 /放大电路 55， ，控制 芯片 54， 的输出端连接电源控制电路 58 ' 和右声道负载检测电路 59， ， 控制芯片 54， 根据右声道负载检测电路 59， 反馈有无外接音 柱检测信号， 控制电源控制电路 58， 中的继电器 J2进行切换， 实现 该音柱扬声器左右声道的切换， 即， 当外接另一无源音柱时， 功放板 5， 自动将主音柱的左、 右声道切换为主音柱 100， 为左声道， 外接 的无源音柱 101， 为右声道。
输入选择电路 51 ' 根据外接信号的不同进行输入信号选择并将 音频信号传送到前级放大 /低通处理电路 52， 和前置放大电路 53， ； 前级放大 /低通处理电路 52， 对输入的信号进行功率放大、低通滤波， 再将低频信号送至低音炮后级功率放大电路 57， 进行信号放大后传 送给低音扬声器 SW;前置放大电路 53， 对输入的信号进行功率放大， 再将信号送至后级功率放大电路 56， 进行信号放大后传送给中、 高 音扬声器 R。

Claims

权 利 要 求
1、 一种新型音柱， 其特征在于： 它主要由外接音源部、 箱体、 中高音扬声器、 面板、 功放板、 音柱底台和风管组成； 所述的箱体为 柱状体，其顶部向上敞开并在上部侧壁上开设一与箱体内腔相通的开 口； 所述的外接音源部套置于箱体的顶部敞开端； 所述的中高音扬声 器安装在面板上， 面板扣合在与箱体内腔相通的开口上； 功放板安装 在箱体内腔内； 所述的音柱底台套接在箱体的下部； 所述的风管安装 箱体内、 中高音扬声器和音柱底台之间。
2、 根据权利要求 1所述的新型音柱， 其特征在于： 所述的风管 呈鹦鹉螺状。
3、 根据权利要求 1所述的新型音柱， 其特征在于： 在箱体的顶 部敞开端铰接一个翻盖， 该翻盖可扣合在箱体内腔上。
4、 根据权利要求 1所述的新型音柱， 其特征在于： 所述的外接 音源部主要由 MP3座、 接口转换板、 橡胶圈、 固定接头、 固定接头板 组成； 所述的 MP3座具有一可容置 MP3或手机的腔体， 该腔体可根据 音频播放器的类型进行变换， 其下端套接在固定接头板上； 所述的接 口转换板可根据不同类型的音频播放器接口方式进行更换；在固定接 头板上设有向上的凸柱；所述的固定接头的 PCB板上设有供螺钉穿过 的连接孔； 在固定接头整体放在固定接头板上时， 螺钉间隙穿过固定 接头 PCB板上的连接孔和套接在固定接头板上凸柱的橡胶圈后螺接 在固定接头板的凸柱上，固定接头和固定接头板可在水平面上略微错 位。
5、 根据权利要求 4所述的新型音柱， 其特征在于： 所述的外接 音源部还包括 MP3护套、 Φ 2. 5 /Φ 3. 5迷你插头、 固定 PCB板、 间隔 柱；所述的 MP3护套固定于容置 MP3座的腔体内；所述的 Φ 2. 5/ Φ 3. 5 迷你插头活动穿置于 MP3座的通孔内；所述的固定 PCB板两侧设有弹 性卡片和向下延设两凸柱， 其中部设有槽孔； 装配时， 固定 PCB板两 侧弹性卡片卡置于 MP3座腔体壁上的纵向长槽内，固定 PCB板上的槽 孔套接在接口转换板上，固定 PCB板的凸柱穿过接口转换板两侧通孔 和间隔柱， 间隔柱的下端面抵靠在固定接头的端面上。
6、 根据权利要求 1所述的新型音柱， 其特征在于： 所述的音柱 底台由脚座连接件、 低音扬声器、 底座上盖和底台组成； 所述的低音 扬声器自下而上套置在脚座连接件中部且低音扬声器的音膜外露朝 下； 所述的脚座连接件通过其周边的支脚连接在底座上盖的上端面， 使外露的低音扬声器音膜与底座上盖的上端面具有一定的相隔空间， 在支脚上设有外接电源的铜端子， 在底座上盖上、铜端子对应处设有 可与插接的铜插头； 所述的底座上盖扣合在底台上， 在底座上盖和底 台之间形成一个可安装发热器件的置物空间，在底座上盖中部、 与低 音扬声器音莫相对处开设有一个与置物空间连通的开口，在底台壳体 上开设多个出气通孔。
7、 根据权利要求 1所述的新型音柱， 其特征在于： 所述的中高 音扬声器由一个可同时播放左右声道高音信号的高音扬声器和四个 中音扬声器组成。
8、 根据权利要求 7所述的新型音柱， 其特征在于： 所述的高音 扬声器中的音圈由绝缘材料制成的圆形筒和线圈组成，所述的线圈有 两组， 该两组线圈一起缠绕在圆形筒上且具有四个抽头。
9、 根据权利要求 1所述的新型音柱， 其特征在于： 所述的箱体 由铝金属材料制成， 功放板安装在箱体内腔壁上。
10、 根据权利要求 1所述的新型音柱， 其特征在于： 所述的功放 板主要由输入选择电路、 前置放大电路、 控制芯片、 信号检测 /放大 电路、 后级功率放大电路、 电源控制电路组成； 所述的控制芯片输入 端连接信号检测 /放大电路， 控制芯片的输出端连接电源控制电路， 控制芯片根据信号检测 /放大电路的检测信号控制电源控制电路中继 电器的切换；输入选择电路根据外接信号的不同进行输入信号选择并 将音频信号传送到前置放大电路；前置放大电路对输入的信号进行功 率放大， 再将信号送至后级功率放大电路进行信号放大后传送给中、 高音扬声器。
11、 根据权利要求 10所述的新型音柱， 其特征在于： 所述的功 放板还包括前級放大 /低通处理电路、 低音炮后级功率放大电路和右 声道负载检测电路组成；所述的右声道负载检测电路的输入端连接控 制芯片的输出端， 当外接另一无源音柱时， 控制芯片根据右声道负载 检测电路所反馈的信号控制继电器的切换， 从而将主音柱的左、 右声 道切换为主音柱为左声道， 外接无源音柱为右声道； 输入选择电路根 据外接信号的不同进行输入信号选择并将音频信号传送到前级放大 / 低通处理电路和前置放大电路； 前级放大 /低通处理电路对输入的信 号进行功率放大、低通滤波， 再将低频信号送至低音炮后级功率放大 电路进行信号放大后传送给低音扬声器。
PCT/CN2005/002037 2005-10-27 2005-11-28 Nouvelle colonne WO2007048281A1 (fr)

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