CN1630426A

CN1630426A - Echo tube mounting structure for loudspeaker

Info

Publication number: CN1630426A
Application number: CN 200310117439
Authority: CN
Inventors: 柳载焕
Original assignee: LG Electronics Huizhou Co Ltd
Current assignee: LG Electronics Huizhou Co Ltd
Priority date: 2003-12-15
Filing date: 2003-12-15
Publication date: 2005-06-22

Abstract

This invention refers to an echo pipe installation structure, which contains casing with open portion in one side, echo pipe in casing its one end connected with open portion of casing, spring part its one end connected with another end of echo pipe and another end connected to inner side of casing and being fixed, and loudspeaker part installed on one inner side of casing. Said invention can make more simply the loudspeaker with echo pipe and prevent internal part of loudspeaker from dropping due to vibration.

Description

The echo pipe mounting structure of loud speaker

(1) technical field

The invention relates to the echo pipe mounting structure of loud speaker, more detail is about effective echo tubular construction that has improved composite behaviour and stability.

(2) background technology

Device-loud speaker of playing sound equipment is to play each frequency range according to the size of shock wave.Such as, when the size of shock wave is medium, show relatively difficulty of high range or low range, but can effectively play the audio frequency of midrange.Loud speaker is at the initial stage that just has been used, the main use by parts (unit) play high range and low range simultaneously, promptly mainly uses full range parts (full range unit).

Human zone of audibility is the range of 20Hz-20KHz scope, does not point out also that so far a kind of full frequency speaker can play out all range of audibility frequency sound fully by a loud speaker.Therefore, just be separated into bass, middle pitch and high pitch, play by different loud speakers, thereby the sound of human all frequencies that can hear is just as with a frequency range, so present what using is the multichannel mode according to its correspondent frequency.

In the middle of above-mentioned multichannel broadcast mode, the loud speaker of playing lower frequency sounds is called woofer (Woofer), the loud speaker of playing medium frequency sound is called middle pitch loudspeaker (mid range), and the loud speaker of playing high frequency sounds is called tweeter (Tweeter).Also can be called 2 sound channels (way) according to constructive method, 3 sound channels (way).

But, the broadcast that is lower than the ULF (Very low frequency effect:VLF) of 100hz only is difficult to realize perfect bass broadcast by loud speaker, vibrations and sound press are very strong, play so generally will design loudspeaker enclosure (Enclosure) separately, be called sub-low frequency loudspeaker (Sub-Woofer).

Especially hole has been seen from the outside by woofer system in the speaker system, on one side this is at the cabinet that forms the loud speaker outward appearance hole to be set, dihedral or circular echo pipe (duct) is set inside.

The function of echo pipe is that the sound equipment echo that produces during with speaker operation is passed on by the echo pipe, and the sound that sends with loud speaker lumps together and will produce stronger bass effect simultaneously.In addition, if be provided with the echo pipe,, also can obtain stronger bass effect even the whole size of loud speaker is smaller.This mode is called bass reflex (bass reflex), uses at most in the middle of the loud speaker of bookshelf (A4 paper size).The echo pipe not only can be arranged on the front of loud speaker, but also can be arranged on side or back, but generally all is arranged on the front downside of loud speaker.

Do not have the loud speaker of echo pipe to be called hermetic type loud speaker (Closed Type speaker), inside fills up quieter material, if the loud speaker size does not increase, is difficult to fully realize bass effect, so most woofer all is provided with the echo pipe.

With reference to Fig. 1 an embodiment of existing woofer is described below.

The outside of loud speaker 10 is a cabinet 15, and its inner space is provided with woofer parts 20.Woofer parts 20 obtain being arranged on the support of the sound panel 30 of cabinet 15 inside, and the main effect of above-mentioned sound panel 30 is the sound waves that send previously and the sound wave that sends later mutual interference mutually that stop woofer parts 20.Cabinet 15 inside are provided with echo pipe 45, form the opening portion 40 with external communications.

Cabinet 15 and sound panel 30 are normally made by timber or metal, and echo pipe 45 is fixing by connected modes such as adhesive agent or screws.

But above-mentioned echo pipe internally-arranged type loud speaker need be smeared adhesive agent or fixed screw when setting acho pipe, and very trouble becomes a low principal element of production efficiency.Especially in order need also to add an engineering that screw is installed then in hole of loud speaker external process by enough screw fixed echo pipes 45.

Moreover, the loud speaker that occurs on the market recently, the material of its outside cabinet 15 are not timber or metal but at this moment porcelain just can not use adhesive agent or screw that the echo pipe is installed sometimes.

(3) summary of the invention

Thereby the present invention carries out in order to address the above problem just, and purpose of the present invention will provide a kind of echo pipe mounting structure that has improved, and echo pipe required in the devices such as woofer can be installed to inside loudspeakers easily.

In addition, another object of the present invention provides a kind of echo pipe mounting structure that does not need fixed forms such as adhesive agent or screw just the echo pipe can be fixed on inside loudspeakers.

To achieve these goals, echo pipe mounting structure of the present invention is characterized in comprising:

Shell is provided with the peristome of opening to the outside in one side;

The echo pipe is installed in the above-mentioned shell, and an end links to each other with the peristome of above-mentioned shell; And

Elastomeric element, an end is connected with the other end of above-mentioned echo pipe, and the other end is connected to one side, inside of above-mentioned shell, thereby is fixed.

Above-mentioned echo pipe is a cylinder type, and it is increasing from central authorities to two ends diameter, in addition, above-mentioned echo pipe can rely on constructional shape difference to be connected with above-mentioned elastomeric element with the peristome of above-mentioned shell and is fixed to above-mentioned enclosure under the situation that does not have adhesive agent or other jockeys.

Above-mentioned elastomeric element is to connect a side of above-mentioned enclosure and an other end of above-mentioned echo pipe with the state that shrinks, and in addition, the jockey that is used for fixing above-mentioned elastomeric element position can be set on above-mentioned enclosure one side.

Above-mentioned echo pipe preferably is made by resin or paper, but is not limited to this, can also use multiple material such as timber, metal, porcelain.

Above-mentioned loudspeaker assembly can change in the installation site of above-mentioned enclosure, and the woofer parts are fixed on the bottom surface of above-mentioned enclosure.

The echo pipe mounting structure of loud speaker of the present invention can be applied to multiple speaker system, but preferably be applied to porcelain system bass speaker system, and, be particularly suitable for comprising the active sub-woofer system (Active sub-woofer system) that son hangs down playback amplifier.

For further specifying above-mentioned purpose of the present invention, design feature and effect, the present invention is described in detail below with reference to accompanying drawing.

(4) description of drawings

Fig. 1 is the structural representation of existing loud speaker echo pipe mounting structure.

Fig. 2 is the structural representation according to the sub-woofer system of the specific embodiment of the invention.

Fig. 3 a is the left view of Fig. 2 loud speaker.

Fig. 3 a is the right view of Fig. 2 loud speaker.

Fig. 4 a is the partial enlarged drawing of Fig. 2 loud speaker.

Fig. 4 b is the stereo amplification figure of echo tubular construction of the present invention.

(5) embodiment

Below, the specific embodiment to the sub-woofer of porcelain system of having used loud speaker echo pipe mounting structure of the present invention is elaborated with reference to the accompanying drawings.

Fig. 2 is the structural representation according to the sub-woofer system of the specific embodiment of the invention.As shown in the figure, above-mentioned shell 110 is not that wooden shell but porcelain burn casting and form.

The face shaping of porcelain shell 110 not only can with the multiple new modeling of the different realization of other wooden shell, and can reduce because the vibrations that the sound equipment that sends of the following woofer parts 140 that will talk about transmits to shell 110.Therefore, the another one advantage of porcelain system shell 110 can prevent to make the parts shake that is fixed on shell 110 inside fall shell 110 inside along with the generation of woofer parts 140 sound equipments with regard to being.

The inside of above-mentioned shell 110 is hollow, and a side 110a is recessed into shell 110 inside, in the recess 120 low playback amplifier (woofer AMP) (not shown) can be installed.Fig. 3 a is a schematic appearance, can see that central authorities are provided with above-mentioned recess 120.

Certainly, low playback amplifier (woofer AMP) also can be arranged in shell 110 inner spaces, has not like this just needed above-mentioned recess 120.

The another one side 110b of above-mentioned shell 110 is provided with the peristome 130 with exterior.The shape of above-mentioned peristome 130 shown in Fig. 3 b, preferably is set to circle.Week preferably is set to one with the inside extension 130 ' that extends to shell 110 inside in the peristome 130.

Shell 110 inner spaces are provided with echo pipe 200.Echo pipe 200 is fixed between the inside extension 130 ' of above-mentioned shell 110 inner side 110a and above-mentioned peristome 130, also will the structure of this echo pipe 200 be elaborated below.

Can see in the bottom surface of above-mentioned shell 110 inside and be provided with woofer parts 140.Because the bass that woofer parts 140 send does not have directivity, therefore can think that the installation site of woofer parts 140 can not produce big influence to tonequality.Therefore, the position of woofer parts 140 can be arranged on and different another one side shown in Figure 2.But,, woofer parts 140 are arranged on the words of shell 110 bottom surfaces from practical angle, cause the possibility of damage littler to woofer parts 140, can be at any time in the sub-woofer of indoor placement system, and, consider it so also is reasonable from angle attractive in appearance.

Above-mentioned woofer parts 140 are spaced apart with ground by the lower support frame 150 that prolongation is arranged on shell 110 bottoms.

Below, with reference to Fig. 4, the structure of above-mentioned echo pipe 200 is as follows: an end 200a of echo pipe 200 contacts with the inside extension 130 ' of above-mentioned peristome 130, and an other end 200b is connected with elastomeric element 210, is fixed on the inside one side 110a of above-mentioned shell 110.

The shape of echo pipe 200 is preferably drum shown in Fig. 4 b, increasing from central authorities to two ends diameter.Such structure can be so that echo pipe 200 be connected with the inside extension 130 ' of elastomeric element 210 and peristome 130 easily.In particular, an end 200a of echo pipe 200 contacts and combination with the inside extension 130 ' of above-mentioned peristome 130 in order to be easy to, and preferably can be set to the shape that expansion as shown in Figs. 4a and 4b is opened.In addition, an other end 200b of echo pipe 200 is fixed to elastomeric element 210 in order to snap in, and its shape is preferably progressive amplification.

Above-mentioned echo pipe 200 two

ends

200a, 200b are connected with the inside extension 130 ' of elastomeric element 210 and peristome 130 respectively, are fixed to shell 110 inside.Among the present invention, because be the elastic force effect fixed echo pipe 200 that relies on elastomeric element 210, so do not need jockeys such as special adhesive agent or screw.Elastomeric element 210 as shown in the figure, is preferably astragal type spring, but also can use the spring of other shape even other elastomeric element.In addition, also can be not only with a spring but connect the other end 200b of echo pipe with plural spring.

In addition, above-mentioned elastomeric element 210 is not only an end that connects echo pipe 200, and, can also play the effect that keeps certain intervals between echo pipe 200 and the shell 110 inner side 110a that makes.In the middle of the sub-woofer system, the function of echo pipe 200 is that the bass and the consequent echo that can allow woofer parts 140 send propagate into the system front, therefore, need make between echo pipe 200 and the shell 110 inner side 110a and keep certain intervals, and, in the middle of the present invention, the another one effect of above-mentioned elastomeric element 210 makes exactly between echo pipe 200 and the shell 110 inner side 110a and keeps certain intervals.

Elastomeric element 210 is being wholely set retainer ring 220 (perhaps be provided with separately) with the contacted end of shell 110 inner side 110a, and elastomeric element 210 just can be firmer like this is fixed to shell 110 inside, and can not come off because of vibrations.

In addition, though it is not shown, at the position that elastomeric element 210 contacts with shell 110 inner side 110a, the position that the inside extension 130 ' of position that elastomeric element 210 contacts with the echo pipe and echo pipe 200 and peristome 130 contacts all adds liner (gasket) or felt sound-absorbing members such as (felt) is set, thereby also can effectively prevent because the vibrations that woofer parts 140 produce cause the vibrations of other parts.Such as, shown in Fig. 4 b, the outer peripheral face of one end 200a of echo pipe 200 is provided with hook 212, after above-mentioned liner (gasket) or felt (felt) 213 filled in above-mentioned hook 212, just can be inserted into the inside of the inside extension 130 ' of the contacted peristome 130 of an end 200a of echo pipe 200.

Reference: the sub-woofer of above-mentioned porcelain system system can also be applied to other multiple speaker system.

The echo pipe mounting structure of the loud speaker of the present invention that has above-mentioned formation and operate as mentioned above can simply be connected to the enclosure space with the echo pipe by spring after shell is made, thereby can improve combinatory possibility.In addition, also can effectively prevent coming off owing to the inside loudspeakers parts that cause of vibrations.

In addition, the echo pipe mounting structure of loud speaker of the present invention does not just need to use the difficult fixture of using such as screw or adhesive agent, and directly the echo pipe firmly is fixed to enclosure when the sub-woofer of the porcelain system of being applied to system in porcelain system shell.

Though the present invention describes with reference to current specific embodiment, but those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, under the situation that does not break away from spirit of the present invention, also can make the variation and the modification of various equivalences, therefore, as long as variation, the modification to the foregoing description all will drop in the scope of claims of the present invention in connotation scope of the present invention.

Claims

1. echo pipe mounting structure is characterized in that comprising:

Shell is provided with the peristome of opening to the outside in one side;

2. echo pipe mounting structure as claimed in claim 1, it is characterized in that: above-mentioned echo pipe is a cylinder type, and it is increasing from central authorities to two ends diameter, in addition, above-mentioned echo pipe can rely on constructional shape difference to be connected with above-mentioned elastomeric element with the peristome of above-mentioned shell and is fixed to above-mentioned enclosure under the situation that does not have adhesive agent or other jockeys.

3. echo pipe mounting structure as claimed in claim 1 is characterized in that: above-mentioned elastomeric element is to connect a side of above-mentioned enclosure and an other end of above-mentioned echo pipe with the state that shrinks.

4. echo pipe mounting structure as claimed in claim 1 is characterized in that: above-mentioned enclosure one side is provided with the jockey that is used for fixing above-mentioned elastomeric element position.

5. echo pipe mounting structure as claimed in claim 1 is characterized in that: liner or felt are all filled in interconnective position between above-mentioned echo pipe, elastomeric element and the shell.

6. echo pipe mounting structure as claimed in claim 1 is characterized in that: above-mentioned shell is a porcelain system.