CN2370521Y

CN2370521Y - Audio equipment

Info

Publication number: CN2370521Y
Application number: CN 99212190
Authority: CN
Inventors: 郭玉玲
Original assignee: GUOTAI ELECTRONIC (SHENZHEN) CO Ltd
Current assignee: GUOTAI ELECTRONIC (SHENZHEN) CO Ltd
Priority date: 1999-05-25
Filing date: 1999-05-25
Publication date: 2000-03-22
Anticipated expiration: 2009-05-25

Abstract

The utility model discloses sound equipment which comprises a mainframe and a horn which is a flat horn is detachably installed on the mainframe through a flexible connection mechanism of a rotation axis, and can rotate around the rotation axis. A wire output terminal arranged on the mainframe and a wire input terminal arranged on the horn are connected by an audio cable, or a wireless ejector is arranged on the mainframe. A wireless acceptor corresponding to the wireless ejector is arranged on the horn, or mechanical connection is adopted for the connection of audio signal, and even an acoustic frequency connection point is coincided with a mechanical coupled mechanism. The horn which can be expanded or applied on the mainframe can satisfy acoustic quality request and reduce the installation space when requirement.

Description

Stereo set

The utility model relates to a kind of stereo set, and for example radio, sound-track engraving apparatus, video recorder, VCD, DVD etc. reach the stereo set that may develop future.

Existing stereo set, the setting of its sound-producing device roughly has dual mode.The one, adopt compact horn, this mode can reduce volume, weight reduction, but tonequality can not be satisfactory.The 2nd, adopt big audio amplifier, its tonequality is better, but because of volume, weight are big, very heavy, inconvenience is carried.Though the patent No. is 91217977.5, patent name has proposed a kind of Collapsible loudspeaker box in the Chinese patent of " Collapsible loudspeaker box ", the expansion that can stretch in use increases sound wave sympathetic response space, improve audio, but condensation when not using, save the space so that carry, even but this audio amplifier still occupies sizable space when condensation, say nothing of when launching.Because loudspeaker itself take up space greatly, simple by effect end of dwindling that audio amplifier can reach be limited.

Fundamental purpose of the present utility model is exactly to provide a kind of stereo set in order to overcome the above problems, make its tonequality good, be easy to carry.

The utility model realizes that the scheme of above-mentioned purpose is: a kind of stereo set, comprise main frame, loudspeaker, it is characterized in that: described loudspeaker are tabular, be removably installed in the main frame side by the moving connecting mechanism that turning axle is arranged, and can rotate around turning axle, form the side of launching shape or fitting in main frame.

Owing to adopt as above scheme, loudspeaker be shaped as tabular, the connected mode of rotatable folding makes it deployable when needed satisfying audio again between itself and the main frame, or fits in the main frame side so that carry, and reduces greatly because of folding back institute takes up space.Because loudspeaker are to be removably installed on the main frame, thus loudspeaker can be unloaded, placed apart with main frame, use flexibly.

Fig. 1 is the utility model embodiment one synoptic diagram.

Fig. 2 is the synoptic diagram after the utility model embodiment one folds.

Fig. 3 is the utility model embodiment two synoptic diagram.

Fig. 4 is the synoptic diagram of the utility model embodiment eighty percent discount poststack.

Fig. 5 is the utility model left side tabular loudspeaker synoptic diagram.

Fig. 6 is the utility model main frame rear side synoptic diagram.

Fig. 7 is the utility model right side tabular loudspeaker synoptic diagram.

Fig. 8 is the utility model tone frequency channel wire connection diagram.

Fig. 9 is " loudspeaker wall " synoptic diagram.

Figure 10 is that mutual side by side support of two tabular loudspeaker stands up synoptic diagram.

Figure 11 is that mutual side by side support of a plurality of tabular loudspeaker stands up synoptic diagram.

Figure 12 is a low frequency filtering circuit synoptic diagram.

Also in conjunction with the accompanying drawings the utility model is described in further detail below by specific embodiment.

Embodiment one: see Fig. 1, be depicted as an embodiment of the utility model stereo set, comprise main frame 1, loudspeaker 2, described loudspeaker 2 are tabular, be removably installed in main frame 1 front side by the moving connecting mechanism that turning axle is arranged, and can behind axial rotary, rotate.

Described " tabular " loudspeaker can have multiple implementation, as NXT (NEXT generationtechnology) or NCT (Noise Cancellation Technology) plate speaker, and for example " the loudspeaker wall " be made up of a plurality of little loudspeakers (traditional moving-coil type or other non-coil-moving speakers) and thin type audio amplifier (seen Fig. 9, wherein 7 is the thin type audio amplifier, 2 ' is little loudspeaker) etc., be exactly exemplary; It also can be the novel flat-plate shape loudspeaker that may occur in the future.(notice that alleged its scope of tabular loudspeaker is wideer than " plate speaker " in this instructions, it not only comprises plate speaker, also comprises the tabular loudspeaker that are made of traditional loudspeaker, thin type audio amplifier, and other tabular loudspeaker).The reader should be able to understand, so-called tabular loudspeaker, and the thickness that is meant loudspeaker is much smaller than its surperficial length and width.

Wherein the tabular loudspeaker can have two, as shown in Fig. 1-4, Yi Bian one, but also can be many.Described moving connecting mechanism can adopt multiple mode, and as bearing pin, hinge etc., those skilled in the art are easy to find out many kinds of connected modes, resemble Yishanmen and are installed on the doorframe opening or closing.

Fig. 2 is the synoptic diagram of tabular loudspeaker 2 behind rotary folding behind the axial rotary.Volume reduces greatly behind the rotary folding, is easy to carry, and can be used as portable machine and uses.

In order to realize allowing sound signal be delivered to loudspeaker 2 from main frame 1, the moving connecting mechanism on the main frame 1 and the audio signal output end of main frame join, the audio signal input end of moving connecting mechanism on the loudspeaker 2 and loudspeaker 2 joins, thereby makes moving connecting mechanism simultaneously also as the audio interface line end.When loudspeaker 2 are installed on the main frame 1, have also finished it and be electrically connected, be i.e. the connection of tone frequency channel wire.Install like this and seem succinct.

Certainly, audio frequency between main frame 1 and the loudspeaker 2 connects the contact mechanical connection contact of also can getting along well and overlaps, promptly the audio frequency contact is established in the place that does not overlap with moving connecting mechanism on main frame 1 and loudspeaker 2 in addition, and the employing " mechanism's formula " that is connected of audio frequency contact place main frame 1 and loudspeaker 2 connects.So-called " mechanism's formula " connection herein is meant with reference to mechanical type and flexibly connects and the movable audio frequency tie point of design, as plug-in, plug-in etc., to save audio connection, makes audio-visual equipment integral body more succinct, attractive in appearance.

Embodiment two: see Fig. 3, present embodiment shows another kind of mounting means, and with the difference of embodiment one be: tabular loudspeaker 2 are installed on the rear side of main frame 1, rotate forward during rotary folding to get final product (see figure 4).

In above-mentioned two examples, tabular loudspeaker 2 can be dismantled, as Fig. 5,6,7 show its dismounting after state, each illustrates a discrete element among three figure.Should be noted in the discussion above that the installation site of tabular loudspeaker 2 on main frame 1 is not limited to two kinds of front side, rear sides, also can be installed on suitable positions such as middle.

Embodiment three: in this example, main frame 1 can adopt and embodiment one or two identical schemes with the mechanical connection manner of loudspeaker 2, but its audio frequency connected mode difference.Shown in Fig. 5,6,7, this is a kind of wireless connections mode.Wireless launcher 4 is set on main frame 1, corresponding with it wireless receiver 5 is set on the loudspeaker 2.The two connects by wireless mode.The physical circuit of wireless launcher 4 and wireless receiver 5 can adopt prior art.Mounting means and the position of wireless receiver 5 on loudspeaker 2 can have multiple, for example can establish a shrinkage pool, wiring is put into wherein and finished to wireless receiver 5, and for example also can on loudspeaker 2, establish a hitch in a side of loudspeaker 2, wireless receiver 5 is hung thereon, or the like.

Embodiment four: main frame 1 has increased the wired connection mode in this example with the audio frequency connected mode of loudspeaker 2, and main frame 1 is provided with line output terminal 3, and loudspeaker 2 are provided with line input terminal 6, and the two connects by tone frequency channel wire.See shown in Figure 8.

Audio frequency connected mode among the embodiment three, four can make tabular loudspeaker 2 unload from main frame 1, separately puts on the table or hangs on the wall.Because loudspeaker are tabulars, very thin thickness is painted the usefulness that pattern or literal can be used as decoration in its surface.For example shown in Figure 10, two in a certain angle being erected on the table of tabular loudspeaker; Figure 11 then illustrates many loudspeaker and is erected on the table at an angle.Can be connected together by connected modes commonly used such as knobs between two or many loudspeaker, so that support mutually.If two loudspeaker are separately put or are separately hung, then should on loudspeaker, establish the strong point in addition, as feet, suppending hole etc., this is a simple technique, so no longer carefully state.

Embodiment five: in general, plate speaker (as NXT, NCT plate speaker) low-frequency minimum is poor than the moving-coil type cone loudspeaker, the input of full range tape input source of sound medium and low frequency can cause power attenuation, distortion, easy burn-out loudspeaker, and low frequency part does not have the essence low-frequency effect again.For avoiding above-mentioned shortcoming, before audio signal output end on the main frame 1, increased filtering circuit 8 (seeing Figure 12) in this example, filter the low frequency composition in the sound signal.After the low frequency elimination, prevent the ineffective power consumption of loudspeaker, prevented to burn the generation of loudspeaker, also prevented the distortion that causes by low frequency.Described filtering circuit 8 mainly comprises inductance L and capacitor C, inductance L is parallel to loudspeaker 2 two ends, the two back in parallel is in series with capacitor C, inductance L and appearance C parameter are selected to determine that according to the impedance at part-frequency point (promptly wishing the separation between frequency that filters and the frequency of the wishing reservation) frequency and part-frequency point place thereof formula is as follows:

L = \frac{Z_{D}}{\sqrt{2} π f_{c}}

C = \frac{1}{2 \sqrt{2} π f_{c} Z_{D}}

F wherein _cBe the part-frequency point frequency, Z _DIt is part-frequency point place loudspeaker impedances.

Can be imported in the audio amplifier that another one designs for bass specially by the bass signal of elimination, when the needs bass, still can reach promising result like this.Woofer can be positioned over the places such as below of main frame 1.

Should be noted that the cited embodiment of the utility model establishes in order to say something.Wherein still have other numerous embodiments and unlisted,, all should be considered as protection domain of the present utility model as long as meet the spirit of claims.

Claims

1. stereo set, comprise main frame (1), loudspeaker (2), it is characterized in that: described loudspeaker (2) are tabular, are removably installed in main frame (1) side by the moving connecting mechanism that turning axle is arranged, and can rotate around turning axle, form the side of launching shape or fitting in main frame (1).

2. stereo set as claimed in claim 1 is characterized in that: wired lead-out terminal (3) on the main frame (1), and wired input terminal (6) on the loudspeaker (2), the two connects by tone frequency channel wire.

3. stereo set as claimed in claim 1, it is characterized in that: the moving connecting mechanism on the main frame (1) and the audio signal output end of main frame join, the moving connecting mechanism on the loudspeaker (2) and the audio signal input end of loudspeaker join, thereby make moving connecting mechanism simultaneously also as the audio interface line end.

4. stereo set as claimed in claim 1 is characterized in that: the audio frequency contact is established in the place that does not overlap with moving connecting mechanism on main frame (1) and loudspeaker (2) in addition, and the employing " mechanism's formula " that is connected of audio frequency contact place main frame (1) and loudspeaker (2) connects.

5. as claim 1 or 2 or 3 or 4 described stereo sets, it is characterized in that: wireless launcher (4) is arranged on the main frame (1), corresponding with it wireless receiver (5) is arranged on the loudspeaker (2).

6. as claim 1 or 2 or 3 or 4 described stereo sets, it is characterized in that: described loudspeaker (2) are plate speakers; Before main frame (1) is gone up audio signal output end, increase filtering circuit, filter the low frequency composition in the sound signal.

7. stereo set as claimed in claim 5 is characterized in that: described loudspeaker (2) are plate speakers; Before main frame (1) is gone up audio signal output end, increase filtering circuit (8), filter the low frequency composition in the sound signal.

8. as claim 1 or 2 or 3 or 4 described stereo sets, it is characterized in that: can link to each other by bindiny mechanism after described loudspeaker (2) are pulled down from main frame (1), support mutually at a certain angle and put.

9. stereo set as claimed in claim 5 is characterized in that: can link to each other by bindiny mechanism after described loudspeaker (2) are pulled down from main frame (1), support mutually at a certain angle and put.

10. stereo set as claimed in claim 6 is characterized in that: can link to each other by bindiny mechanism after described loudspeaker (2) are pulled down from main frame (1), support mutually at a certain angle and put.