CN103987005A - Loudspeaker device - Google Patents
Loudspeaker device Download PDFInfo
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- CN103987005A CN103987005A CN201410119072.8A CN201410119072A CN103987005A CN 103987005 A CN103987005 A CN 103987005A CN 201410119072 A CN201410119072 A CN 201410119072A CN 103987005 A CN103987005 A CN 103987005A
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- voice coil
- lead
- out wire
- loudspeaker voice
- coil loudspeaker
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Abstract
The invention provides a loudspeaker device. The loudspeaker device comprises a frame, a vibration plate, an edge, a voice coil, a magnetic circuit and an outgoing line. The edge is of a concave section shape. One portion of the outgoing line which is located between the frame and the edge in the short-axis direction of the magnetic circuit is arranged at the magnetic circuit side compared with the top portion of the edge.
Description
Patent application of the present invention is that denomination of invention is " speaker unit ", the applying date to be that on July 31st, 2007, international application no are that " PCT/JP2007/065007 ", national applications number are the divisional application of the application for a patent for invention of " 200780100097.1 ".
Technical field
The present invention relates to a kind of speaker unit.
Background technology
In general speaker unit, the voice coil loudspeaker voice coil vibration being fixed on oscillating plate is configured in the magnetic gap of magnetic circuit freely.The lead-out wire (lead-in wire) of drawing from voice coil loudspeaker voice coil is to fix with being arranged on the state of the portion of terminal conducting speaker frame.
For example, in general speaker unit, do not there is lead-in wire and connect the structure between voice coil loudspeaker voice coil and portion of terminal with linearity, but there is the structure (for example, with reference to patent documentation 1) that the remaining length portions (excess length portion) such as bend are set on lead-in wire.
In above-mentioned speaker unit, by bend being set on lead-in wire, lead-in wire can be followed the displacement of voice coil loudspeaker voice coil, and can reduce the stress that imposes on lead-in wire.
Patent documentation 1: TOHKEMY 2003-348690 communique
Summary of the invention
But, in more slim speaker unit or small-sized speaker unit, because there is limitation arranging on space of voice coil loudspeaker voice coil lead-out wire, there is the situation of allophone so for example exist the remaining long portion of lead-out wire to contact with magnetic circuit, oscillating plate, edge part etc.And, exist because this contact produces stress at the continual-connecting-part of lead-out wire and portion of terminal situation about breaking occurs.
And, in more slim or small-sized speaker unit, the shape (path) of the lead-out wire between voice coil loudspeaker voice coil and portion of terminal is larger on the impact of voice coil loudspeaker voice coil weight balancing, if exist and lay particular stress on weight balancing, existence produces unnecessary vibration and causes the deteriorated situation of tonequality.
The present invention processes this problem as an example of problem.That is, its object is, even more slim, small-sized speaker unit also can reduce by the allophone causing that contacts of lead-out wire and miscellaneous part and occur, reduces the broken string of lead-out wire, reduces the deteriorated etc. of tonequality.
In order to reach this object, the present invention at least possesses the structure that following independent claims relate to.
Speaker unit involved in the present invention is characterised in that, this speaker unit has framework, oscillating plate, edge, voice coil loudspeaker voice coil, magnetic circuit and lead-out wire, described edge has the cross sectional shape of concavity, is disposed at described magnetic circuit side compared with the part for described lead-out wire on the short-axis direction of magnetic circuit between described framework and described edge and the top at described edge.
Brief description of the drawings
Fig. 1 is the plane graph of the related speaker unit 1 of the 1st execution mode of the present invention.
(A) of Fig. 2 is the profile of observing from the visual direction Dl of the speaker unit 1 shown in Fig. 1, is (B) figure observing from the visual direction D2 of the speaker unit 1 shown in Fig. 1.
Fig. 3 is the plane graph of the related speaker unit 1A of the 2nd execution mode of the present invention.
Fig. 4 is the plane graph of the related speaker unit lB of the 3rd execution mode of the present invention.
Fig. 5 is the profile of observing from the visual direction Dl of the speaker unit lB shown in Fig. 4.
Fig. 6 is the plane graph of the related speaker unit 1C of the 4th execution mode of the present invention.
Fig. 7 is the profile of the speaker unit 1C shown in Fig. 6.
Fig. 8 is near the amplification profile of lead-out wire 4 of the speaker unit 1C shown in Fig. 7.
Fig. 9 is the exploded perspective view of the magnetic circuit 2C of the speaker unit 1C shown in Fig. 6.
(A) of Figure 10 is the side view of drawing path of the related speaker unit of the 1st concrete example of the present invention, is (B) side view of drawing path of the related speaker unit of the 2nd concrete example of the present invention.
(A) of Figure 11 is the front elevation of the voice coil loudspeaker voice coil 33D for the related speaker unit of one embodiment of the present invention is described, (B) be near the enlarged drawing in winding starting position of the wire 401 of the voice coil loudspeaker voice coil shown in (A), (C) be near the enlarged drawing of winding end position of the wire 401 of the voice coil loudspeaker voice coil shown in (A), (D) being the variation of the voice coil loudspeaker voice coil shown in (B), is (E) variation of the voice coil loudspeaker voice coil shown in (C).
Figure 12 is the plane graph of the related speaker unit 1F of the 5th execution mode of the present invention.
Figure 13 is the plane graph of the related speaker unit 1G of the 6th execution mode of the present invention.
Embodiment
Speaker unit involved in the present invention is characterised in that, possess the magnetic circuit of the magnetic gap that is formed with matched in clearance voice coil loudspeaker voice coil, be fixed on vibrating body on above-mentioned voice coil loudspeaker voice coil directly or indirectly, support this vibrating body and be innerly provided with the framework of above-mentioned magnetic circuit and connect the portion of terminal of the lead-out wire of voice coil loudspeaker voice coil, the voice coil loudspeaker voice coil in matched in clearance in magnetic gap and being located at disposes the path of drawing that the lead-out wire of drawing from voice coil loudspeaker voice coil passes between the portion of terminal of framework.
In the speaker unit of said structure, in matched in clearance, the voice coil loudspeaker voice coil in magnetic gap and being arranged on has the path of drawing that the lead-out wire of drawing from voice coil loudspeaker voice coil passes to magnetic circuit between the portion of terminal of framework, the lead-out wire of voice coil loudspeaker voice coil passes and draws path and be connected electrically in the portion of terminal being arranged at framework from voice coil loudspeaker voice coil, so for example can prevent that lead-out wire from contacting with magnetic circuit, oscillating plate, edge part etc., thereby can reduce the generation of allophone.And, the slim speaker unit that tonequality is higher can be provided.In addition, can provide the miniature loudspeaker device that tonequality is higher.
And, because reduced contacting of lead-out wire and miscellaneous part, can reduce the broken string of the lead-out wire being caused by contact.
Below, with reference to the accompanying drawings of the related speaker unit of one embodiment of the present invention.
［ the 1st execution mode ］
Fig. 1 is the plane graph of the related speaker unit 1 of the 1st execution mode of the present invention.(A) of Fig. 2 is the profile of observing from the visual direction Dl of the speaker unit 1 shown in Fig. 1, and (B) of Fig. 2 is the figure observing from the visual direction D2 of the speaker unit 1 shown in Fig. 1.Oscillating plate and the edge of speaker unit 1 in Fig. 1, are omitted.
As shown in Figure 1, the related speaker unit 1 of present embodiment is more slim and small-sized speaker unit.And the related speaker unit 1 of present embodiment is for example for the speaker unit of portable phone or earphone etc.
As shown in Figure 1, the related speaker unit 1 of present embodiment has magnetic circuit 2, vibrating body 3, voice coil loudspeaker voice coil 33, lead-out wire 4, framework 5 and portion of terminal 6.What magnetic circuit 2 had that the lead-out wire 4 of voice coil loudspeaker voice coil 33 passes draws path 7.
Magnetic circuit 2 is equivalent to an execution mode of magnetic circuit involved in the present invention, and vibrating body 3 is equivalent to an execution mode of vibrating body involved in the present invention, and framework 5 is equivalent to an execution mode of framework involved in the present invention.Voice coil loudspeaker voice coil 33 is equivalent to an execution mode of voice coil loudspeaker voice coil involved in the present invention, and lead-out wire 4 is equivalent to an execution mode of lead-out wire involved in the present invention, and portion of terminal 6 is equivalent to an execution mode of portion of terminal involved in the present invention.Draw path 7 and be equivalent to an execution mode of drawing path involved in the present invention.
For example can adopt internal magnetic type magnetic circuit, external magnetic circuit etc. as magnetic circuit 2.The related magnetic circuit of present embodiment adopts internal magnetic type magnetic circuit.Magnetic circuit 2 possesses the magnetic gap G of matched in clearance voice coil loudspeaker voice coil 33.
In detail, the related magnetic circuit 2 of present embodiment has yoke 21, magnet 22 and dull and stereotyped 23.
Yoke 21 has bottom surface sections 21A, bend 21B and sidepiece 21C.For example as shown in Figure 1, 2, the related yoke 21 of present embodiment has the bottom surface sections 21A of roughly rounded writing board shape, radiates the bend 21B of the shape that side (SD) is bending and the sidepiece 21C towards the tubular of sound equipment radiation side extension from this bend 21B from bottom surface sections 21A towards sound equipment.And as shown in Figure 2, the section shape of yoke 21 roughly forms U font.For example by iron etc., known to form material one-body molded for bottom surface sections 21A, the bend 21B of yoke 21 and sidepiece 21C.
And yoke 21 has the notch 71 on the sidepiece 21C that is formed on yoke.This notch 71 is equivalent to draw an execution mode of path 7.This is drawn path 7 and is arranged on the voice coil loudspeaker voice coil 33 of matched in clearance in magnetic gap G and is arranged between the portion of terminal 6 on framework 5.
In addition, as shown in Figure 1, notch 71 is formed near the extraction location of voice coil loudspeaker voice coil 33.The related notch 71 of present embodiment is formed on roughly on the point-symmetric position of central shaft with respect to voice coil loudspeaker voice coil 33 with the interval of regulation.
And for example, as shown in Fig. 2 (A), Fig. 2 (B), the related yoke 21 of present embodiment is formed with the notch 71 of the roughly U font of specific length towards bottom surface sections 21A from the upper end 21D of yoke 21.The lead-out wire 4 of drawing from voice coil loudspeaker voice coil 33 is connected with the portion of terminal 6 being arranged at framework 5 through this notch 71.For example, lead-out wire 4 is connected in portion of terminal 6 by modes such as soldering connection, thermocompression bondings.
Between lead-out wire 4 and above-mentioned notch 71, separating predetermined distance is configured.In detail, the shape of lead-out wire 4, draw the shape of the notch 71 of path 7, with respect to the formation position of the portion of terminal 6 of the formation position of notch 71, specified as follows with respect to the position of the support 51 of the formation position of notch 71: even for example at voice coil loudspeaker voice coil 33 along the vertical direction (sound equipment radiation direction) vibration in the situation that, lead-out wire 4 also at least can not contact with yoke 21, framework 5, edge 32 and notch 71.
Magnet 22 is the permanent magnets that for example comprise the prescribed material such as neodymium class, scythe and cobalt kind, ferrite class, aluminium nickel cobalt class.As shown in Fig. 2 (A), magnet 22 is arranged on the bottom surface sections 21A of yoke 21.The related magnet 22 of present embodiment forms cylindrical.
Dull and stereotyped 23 are for example made up of prescribed material such as iron, as shown in Fig. 2 (A), are arranged on magnet 22.The conglobate writing board shape of for example shape of flat board 23 that present embodiment is related.
In the magnetic circuit 2 of said structure, between yoke 21 and dull and stereotyped 23 along being circumferentially formed with magnetic gap G.
Vibrating body 3 directly or be indirectly fixed on voice coil loudspeaker voice coil 33 by parts such as speech coil frameworks.
For example as shown in Figure 1 and Figure 2, the related vibrating body 3 of present embodiment has oscillating plate 31 and edge 32.
Oscillating plate 31 for example forms the shape of the regulations such as writing board shape, domed shape, cone shape.Oscillating plate 31 is vibrated and is fixed on freely on framework 5 by edge 32.In detail, the peripheral part of oscillating plate 31 is fixed in the interior perimembranous at edge 32 by bonding agent etc.
The conglobate writing board shape of oscillating plate 31 shape that present embodiment is related, with respect to the face of sound equipment radiation side, for example, is fixed on the upper end of voice coil loudspeaker voice coil 33 on the face of opposition side by bonding agent etc.The formation material of oscillating plate 31 for example can adopt: the metal materials such as aluminium, titanium, beryllium, the resins such as polyarylate, polyimides, PEN, plastics, paper, reinforced plastics fiber, the well known materials such as ceramic material.
The upper end 5A that the peripheral part at edge 32 is fixed on framework 5 by bonding agent etc. is upper, and interior perimembranous is fixed on the periphery of oscillating plate 31, supports freely oscillating plate 31 to vibrate.The section shape at edge 32 can radiate side towards sound equipment and form protrusion shape, U font, V font, waveform shape, writing board shape isotactic setting shape.The section shape at the related edge 32 of present embodiment forms U font (spill) in sound equipment radiation side.
Oscillating plate 31 and edge 32 also can be one-body molded by same materials such as resins.
For example as shown in Figure 1 and Figure 2, the related voice coil loudspeaker voice coil 33 of present embodiment forms ring-type.This voice coil loudspeaker voice coil 33 forms by being wound around wire.The voice coil loudspeaker voice coil 33 formation shape corresponding with the shape of the magnetic gap G of magnetic circuit, forms drum in the present embodiment.
As shown in Fig. 2 (A), Fig. 2 (B), the lead-out wire 4 of drawing from voice coil loudspeaker voice coil 33 is connected with the portion of terminal 6 being arranged on framework 5 by drawing path 7.And lead-out wire 4 is being drawn the remaining long portion 41 that specifies to have curved shape between path 7 and portion of terminal 6.The remaining long portion 41 of this lead-out wire 4 is defined as in roundabout shape in the part of yoke 21 of magnetic circuit 2.
For example as shown in Figure 1 and Figure 2, the related lead-out wire 4 of present embodiment is drawn from the bottom of voice coil loudspeaker voice coil 33, stretch out towards the interior perimembranous of framework 5 by drawing path 7, near the interior perimembranous of framework 5 along circumferentially towards portion of terminal 6 bendings, inner peripheral surface from this bend 42 along framework 5 stretches out with arc towards portion of terminal 6, to be fixed with the state of portion of terminal 6 conductings.
More particularly, as shown in Figure 1 and Figure 2, lead-out wire 4 passes and draws path 7 towards radial outside stretches out from the extraction location of voice coil loudspeaker voice coil 33, the direction of stretching out with respect to above-mentioned lead-out wire 4 is roughly spent left and right along about 90 degree～160 of circumferential skewing of voice coil loudspeaker voice coil, from this bend 42 roughly along voice coil loudspeaker voice coil circumferentially extend out to portion of terminal 6 in the mode of the remaining long portion 41 that forms specific length, this portion of terminal 6 is formed on along radially separating on the position of predetermined distance with voice coil loudspeaker voice coil 33.
And, as shown in Figure 1, draw a pair of lead-out wire 4 from voice coil loudspeaker voice coil 33, this pair of lead-out wire 4 is defined as the roughly point-symmetric shape of central point with respect to voice coil loudspeaker voice coil 33.
The impact of the weight balancing of the shape (path) of the lead-out wire 4 between voice coil loudspeaker voice coil 33 and portion of terminal 6 on voice coil loudspeaker voice coil 33 is larger, but in the shape of the lead-out wire 4 of said structure, a pair of lead-out wire 4 is defined as the roughly point-symmetric shape of central point with respect to voice coil loudspeaker voice coil 33, so the supporting force of a pair of lead-out wire acts on voice coil loudspeaker voice coil 33, the balance of voice coil loudspeaker voice coil 33 can be guaranteed, thereby the unnecessary vibration of voice coil loudspeaker voice coil 33 can be reduced.And if only consider a pair of lead-out wire 4, a pair of lead-out wire 4 is configured in each other roughly on point-symmetric position, to can guarantee the weight balancing of voice coil loudspeaker voice coil or the weight balancing of vibrating body as far as possible.
And, due to exist because of voice coil loudspeaker voice coil 33 from being wound around the centre-of gravity shift starting to being wound around the voice coil loudspeaker voice coil 33 that causes of wire finishing, so centre-of gravity shift that should voice coil loudspeaker voice coil 33 is specified to the shape of this lead-out wire 4 so that voice coil loudspeaker voice coil 33 keeps balance.
In addition, as shown in Figure 1 and Figure 2, more than lead-out wire 4 is defined as, length portion 41 is between edge 32 and framework 5.
And the lead-out wire 4 of drawing from voice coil loudspeaker voice coil 33 has multiple bends.Lead-out wire 4 possesses multiple bends, becomes larger so lead-out wire 4 supports the supporting force of voice coil loudspeaker voice coil 33, the generation of the abnormal vibrations such as phenomenon that can suppress to roll.In addition, can guarantee the balance of voice coil loudspeaker voice coil 33.
And lead-out wire 4 has the rigidity (elasticity) of regulation and is formed with bend, so for example can prevent rolling, lead-out wire 4 is supported on voice coil loudspeaker voice coil 33.
Framework 5 supports vibrating body 3, and inside is provided with magnetic circuit 2.As shown in Figure 1 and Figure 2, the section of the related framework 5 of present embodiment forms U font, and magnetic circuit 2 is configured on plane bottom 5B.And framework 5 forms the sidepiece 5C stretching out towards sound equipment radiation side from bottom 5B, the peripheral part at edge 32 is fixed on the upper end 5A of sidepiece 5C by bonding agent etc.Framework 5 is for example determined material by resin isotactic and is formed.
Framework 5 possesses support 51 drawing between path 7 and portion of terminal 6 of magnetic circuit 2.Support 51 is formed on the shape of giving prominence on the assigned position of framework 5, supports lead-out wire 4 to contact (butt) with lead-out wire 4.And support 51 can reduce from voice coil loudspeaker voice coil 33 and is transmitted to vibration and the stress portion of terminal 6 by lead-out wire 4.
For example as shown in Figure 1, the related support 51 of present embodiment forms in the mode of the remaining long portion outer circumferential side that is positioned at lead-out wire 4, supports lead-out wire 4 with lead-out wire 4 butts.
Portion of terminal 6 is formed on the assigned position of framework 5, and is electrically connected with the end of the lead-out wire 4 of drawing from voice coil loudspeaker voice coil 33.As portion of terminal 6, for example, can adopt the metal that the conductivity such as iron are higher.
As shown in Figure 1 and Figure 2, the related portion of terminal 6 of present embodiment is formed at the remaining long portion 41 of lead-out wire 4 is configured in to drawing on the position between path 7 and portion of terminal 6 of magnetic circuit 2.In detail, as shown in Figure 1, pair of terminal portion 6 is formed on position from being formed at 2 notchs 71 that pass for lead-out wire 4 yoke 21 roughly along circumferentially separately on the position of predetermined distance.And, this pair of terminal portion 6 with the central shaft with respect to voice coil loudspeaker voice coil 33 roughly point-symmetric mode form.
And in detail, as shown in Figure 1 and Figure 2, the related portion of terminal 6 of present embodiment has internal terminal portion 61 and external terminal portions 62.Internal terminal portion 61 and external terminal portions 62 are electrically connected.Internal terminal portion 61 forms the shape outstanding to the interior perimembranous of framework 5.External terminal portions 62 also can form the shape outstanding to the outer circumferential side of framework 5, for example, form highlightedly to the bottom of framework 5.External terminal portions 62 for example can be connected electrically in the portion of terminal of the external circuits such as audio signal processing circuit.
Specifically, as shown in Figure 1, the following regulation position of portion of terminal 6 and the position of support 51, make: lead-out wire 4 is drawn from the bottom of drawing near the voice coil loudspeaker voice coil 33 notch 71 of path 7, pass the notch 71 of drawing path 7 roughly after radial outside stretches out, to circumferentially (observe to left) bending from sound equipment radiation side, to form the remaining long portion 41 of specific length.
Then, with reference to the accompanying drawings of the action of the speaker unit 1 of said structure.
In speaker unit 1, if from portion of terminal 6 input audio signals, audio signal inputs to voice coil loudspeaker voice coil 33 by the lead-out wire 4 being connected electrically in the internal terminal portion 61 of portion of terminal 6.On voice coil loudspeaker voice coil 33, produce and be formed on the flux density (magnetic field intensity) in the magnetic gap G of magnetic circuit 2 and input to the electromagnetic force (Lorentz force) that the current level of audio signal of voice coil loudspeaker voice coil 33 is corresponding along above-below direction (sound equipment radiation direction or its rightabout).Voice coil loudspeaker voice coil 33 is using this electromagnetic force (Lorentz force) as actuating force and along sound equipment radiation direction or the vibration of its rightabout.
If actuating force is delivered to oscillating plate 31 by voice coil loudspeaker voice coil 33, vibrating body 3 is to should actuating force vibrating along sound equipment radiation direction or its rightabout.As mentioned above, the lead-out wire 4 of voice coil loudspeaker voice coil 33 is passed on yoke 21 notch of drawing path 7 71 forming, roundabout and more than having, be connected to longways in portion of terminal 6 in a part of the sidepiece 21C of yoke 21, and lead-out wire 4 is followed the vibration of voice coil loudspeaker voice coil 33 and displacement.
As mentioned above, in speaker unit 1, there are more slim and small-sized magnetic circuit 2, vibrating body 3, framework 5 etc., even at voice coil loudspeaker voice coil 33 along above-below direction displacement in the situation that, lead-out wire 4 also has remaining length portion and is connected in portion of terminal 6 through drawing path 7, therefore can reduce contacting of the miscellaneous parts such as such as lead-out wire 4 and yoke 21, edge 32.
In detail, for example as shown in Figure 2, if simply through the upper end of yoke 21 and edge 32 and be connected to portion of terminal 6, the interval at the upper end of yoke 21 and edge 32 is narrow by the lead-out wire of drawing from voice coil loudspeaker voice coil 33 4, what therefore have that lead-out wire 4 contacts with edge 32 may.
On the other hand, in speaker unit involved in the present invention 1, on magnetic circuit 2, be provided with as described above pass for lead-out wire 4 draw path 7, so even in the case of the upper end of yoke 21 and the interval at edge 32 narrow, also can reduce contacting of lead-out wire 4 and edge 32.
And, in speaker unit 1, can reduce the generation of the allophone being caused by this contact., can provide thin speaker device and the higher miniature loudspeaker device of tonequality that tonequality is higher.
And, in speaker unit 1, can reduce the broken string that is contacted the lead-out wire 4 causing by lead-out wire 4 described above with miscellaneous part.
In addition, as shown in Figure 1, the notch 71 of drawing path 7 is formed on respect to the central shaft of voice coil loudspeaker voice coil 33 roughly on point-symmetric position with the interval of regulation, and a pair of lead-out wire 4 is defined as the roughly point-symmetric shape of central point with respect to voice coil loudspeaker voice coil 33, therefore voice coil loudspeaker voice coil 33 can keep balance, thereby can reduce the unnecessary vibration of voice coil loudspeaker voice coil 33., can provide the speaker unit 1 that tonequality is higher.
［ the 2nd execution mode ］
Fig. 3 is the plane graph of the related speaker unit 1A of the 2nd execution mode of the present invention.In the 1st execution mode and the 2nd execution mode, to same structure etc., description thereof is omitted.
As shown in Figure 3, in the related speaker unit 1A of present embodiment, compared with the 1st execution mode, be arranged on support 51A between voice coil loudspeaker voice coil 33 and portion of terminal 6 and be formed near of the notch 71 of drawing path 7.And support 51A is positioned at the inner circumferential side of the bend 42 of lead-out wire 4.
According to the speaker unit 1A of said structure, because support 51A is formed near of the notch 71 of drawing path 7, and be positioned at the inner circumferential side of the bend 42 of lead-out wire 4, so can easily make the bend of lead-out wire 4 form bend 42.In detail, the shape that the lead-out wire 4 of for example voice coil loudspeaker voice coil 33 is drawn with linearity under state in the early stage.When by voice coil loudspeaker voice coil 33 matched in clearance in the magnetic gap G of magnetic circuit 2 time, by the lead-out wire of drawing from voice coil loudspeaker voice coil 33 4 by being pressed in support 51A and making it bending and after forming bend 42, again the end of lead-out wire 4 is connected in portion of terminal 6, can easily obtains thus the lead-out wire 4 of above-mentioned shape.
［ the 3rd execution mode ］
Fig. 4 is the plane graph of the related speaker unit lB of the 3rd execution mode of the present invention.Fig. 5 is the profile of observing from the visual direction Dl of the speaker unit lB shown in Fig. 4.In the 1st～3rd execution mode, omit the explanation to same structure etc.
As shown in Figure 4, Figure 5, the related speaker unit 1B of present embodiment has the 1st support 51 and the 2nd support 52.The 1st support 51 support 51 related with the 1st execution mode is identical structural elements.
The 2nd support 52 is formed on the roughly the same position of the support 51A related with the 2nd execution mode, roughly the same with the function of support 51A.And as shown in Figure 5, the 2nd related support 52 of present embodiment is formed as the font of falling L.
In the speaker unit lB of said structure, because being provided with the 2nd support 52 and the support 51 of the above-mentioned font of falling L, so in the time carrying out speaker drive, even if lead-out wire 4 vibrates, also can suppress pressure-acting in the junction surface of portion of terminal on phenomenon and the phenomenon that comes off from portion of terminal of lead-out wire 4.
［ the 4th execution mode ］
Fig. 6 is the plane graph of the related speaker unit 1C of the 4th execution mode of the present invention.Fig. 7 is the profile of the speaker unit 1C shown in Fig. 6.Fig. 8 is near the amplification profile of lead-out wire 4 of the speaker unit 1C shown in Fig. 7.Fig. 9 is the exploded perspective view of the magnetic circuit 2C of the speaker unit 1C shown in Fig. 6.In Fig. 6, omit oscillating plate and the edge of speaker unit 1C.And, in the 1st～4th execution mode, omit the explanation to same structure etc.
As shown in Figure 6, the related speaker unit 1C of present embodiment has magnetic circuit 2C, voice coil loudspeaker voice coil 33C and framework 5.
For example, as shown in Fig. 6, Fig. 9, if observe from sound equipment radiation direction, the related magnetic circuit 2C of present embodiment roughly forms rectangle.Magnetic circuit 2C has roughly rectangular bottom surface sections 21A, from the end of bottom surface sections 21A towards the bend 21B of the shape of sound equipment radiation lateral bend and the sidepiece 21C stretching out towards sound equipment radiation side from this bend 21B.
The related magnetic circuit 2C of present embodiment is formed with and draws path 7 in roughly rectangular bight.In detail, be formed with notch 71 in 4 bights of yoke 21.As shown in Figure 6, in 4 bights of yoke 21, be at least formed with in 2 relative bights pass for lead-out wire 4 draw path 7.
As shown in Figure 6, if observe from sound equipment radiation direction, voice coil loudspeaker voice coil 33C forms the essentially rectangular that possesses line part 331 and curve part 332.Voice coil loudspeaker voice coil 33C matched in clearance is in the magnetic gap G of magnetic circuit 2.For example, in order to reduce to impose on the stress of lead division as far as possible, preferably the lead-out wire of drawing from voice coil loudspeaker voice coil 33C 4 is drawn from line part 331.
As shown in Figure 6, framework 5 is formed with portion of terminal 6C near not being formed with the bight of drawing path 7 of magnetic circuit 2.In detail, as shown in Figure 6 to 8, portion of terminal 6C has the internal terminal portion 61 being formed in framework and is formed on the external terminal portions 62 outside framework, and internal terminal portion 61 and external terminal portions 62 are electrically connected mutually.
And as shown in Figure 6, framework 5 is at the support 51C between path 7 and portion of terminal 6C with supporting lead-out wire 4 that draws of magnetic circuit 2C.
The shape that support 51C forms to give prominence to is formed on the assigned position of framework 5, and contact with lead-out wire 4 (butt) and supporting lead-out wire 4.The related support 51C of present embodiment is positioned at the inner circumferential side of the remaining long portion 41 of lead-out wire 4.
The related lead-out wire 4 of present embodiment is drawn near the bight of roughly rectangular voice coil loudspeaker voice coil 33, through the notch 71 of drawing path 7, is roughly fixed in portion of terminal 6 along short-axis direction bending.
As shown in Figure 6, the related bend 42 of present embodiment has multiple bend 42A, 42B.Lead-out wire 4 possesses multiple bend 42A, 42B, and therefore to support the supporting force of voice coil loudspeaker voice coil 33C larger for lead-out wire 4, the generation of the abnormal vibrations such as phenomenon that can suppress to roll.And, can guarantee the balance of voice coil loudspeaker voice coil 33.
And, in the early stage under state (Audio Meter is 0 o'clock), for example as shown in Figure 8, the lead-out wire 4 of voice coil loudspeaker voice coil 33C is drawn near the bottom of voice coil loudspeaker voice coil 33C, through drawing path 7, bending after stretching out obliquely from extraction location, with the state of internal terminal portion 61 conductings under be fixed, this internal terminal portion 61 is arranged on the horizontal level roughly the same with extraction location.That is, lead-out wire 4 is through the notch 71 of drawing path 7, roundabout and be connected in portion of terminal 6 in a part for yoke 21.
In the speaker unit 1C of said structure, because lead-out wire 4 forms above-mentioned shape, so even in the time that voice coil loudspeaker voice coil 33 vibrates, also can suppress lead-out wire 4 and contact with miscellaneous parts such as edge 32, yokes 21.
As shown in Figure 8, although speaker unit 1C is the thin speaker device of the narrow structure in the interval between edge 32 and yoke 21, but because the lead-out wire 4 of voice coil loudspeaker voice coil 33 passes drawing path 7 and being connected in internal terminal portion 61 of magnetic circuit 2, so can reduce by lead-out wire 4 deteriorated with the tonequality that contacting of the parts such as edge, yoke causes.
And, in the present embodiment, by the remaining length of the side configuration portion 41 than the top at edge 32 34 more close frameworks, can suppress edge 32 and contact with remaining long portion 41.In addition, this remaining long portion also can be configured in yoke 4 one sides.
［ drawing the concrete example of path ］
(A) of Figure 10 is the side view of drawing path of the related speaker unit of the 1st concrete example of the present invention.(B) of Figure 10 is the side view of drawing path of the related speaker unit of the 2nd concrete example of the present invention.
For example, as shown in Figure 10 (A), be formed on drawing path 7 and also can reaching bottom surface sections 21A from the upper end 21D of yoke 21 always and form notch 71 of magnetic circuit 2C.And for example, as shown in Figure 10 (B), the path 7 of drawing of magnetic circuit 2C also can be from the upper end 21D of yoke 21 towards bottom surface sections 21A with predetermined distance formation notch 71.
Magnetic circuit 2C has following structure: even in the situation that voice coil loudspeaker voice coil 33 vibrates, lead-out wire 4 also can not contact with the notch 71 of drawing path 7.
［ balance of voice coil loudspeaker voice coil ］
(A) of Figure 11 is the front elevation of the voice coil loudspeaker voice coil 33D for the related speaker unit of one embodiment of the present invention is described, (B) of Figure 11 is near the enlarged drawing winding starting position of wire 401 of the voice coil loudspeaker voice coil shown in (A) of Figure 11, and (C) of Figure 11 is near the enlarged drawing winding end position of wire 401 of the voice coil loudspeaker voice coil shown in (A) of Figure 11.
And (D) of Figure 11 and (E) of Figure 11 are respectively the variation of the voice coil loudspeaker voice coil shown in Figure 11 (B) and Figure 11 (C).
As shown in Figure 11 (A)～(C), a pair of lead-out wire 4 of the related voice coil loudspeaker voice coil 33D of one embodiment of the present invention is defined as the roughly point-symmetric shape of central point 0 with respect to voice coil loudspeaker voice coil 33D.
And, because the wire 401 that starts to finish to winding from winding because of voice coil loudspeaker voice coil 33D causes voice coil loudspeaker voice coil center of gravity CG to be positioned at different positions with respect to center O, thus the shape of regulation lead-out wire 4, so that this voice coil loudspeaker voice coil 33D keeps balance.And, if only consider a pair of lead-out wire 4, a pair of lead-out wire 4 is configured in mutually roughly on point-symmetric position, to can guarantee the weight balancing of voice coil loudspeaker voice coil or the weight balancing of vibrating body as far as possible.
In detail, as shown in Figure 11 (A)～(E), the wire 401 of voice coil loudspeaker voice coil 33D starts to be wound around near winding starting position 401S rectangle bight, and after being wound around stipulated number (N time), near the winding end position 401E place its relative bight finishes to be wound around.Now, in voice coil loudspeaker voice coil 33D, center of gravity CG from the center O of voice coil loudspeaker voice coil 33 be offset with from being wound around starting position 401S to amount corresponding to the wire 401 that is wound around end position 401E.
It is heavy because heart CG is from the center O skew of voice coil loudspeaker voice coil 33, so can keep the mode of balance to specify the shape of this lead-out wire 4 with this voice coil loudspeaker voice coil 33D.
Specifically, for example, as shown in Figure 11 (A)～(E), the position of the position of centre of gravity CG of voice coil loudspeaker voice coil 33D and the bend 42 of lead-out wire 4 is defined as across the diagonal DL through voice coil loudspeaker voice coil 33D central point O and each other in opposition side.
In the voice coil loudspeaker voice coil 33D of said structure, consider the line density of lead-out wire 4 and can keep the mode of balance to specify the shape of the bend 42 of a pair of lead-out wire 4 with voice coil loudspeaker voice coil 33D.
In the related speaker unit of one embodiment of the present invention, by adopting the voice coil loudspeaker voice coil 33D of said structure, can keep balance, and can prevent the reduction of tonequality.
［ the 5th execution mode ］
Figure 12 is the plane graph of the related speaker unit 1F of the 5th execution mode of the present invention.In the 4th execution mode and the 5th execution mode, omit the explanation to same structure etc.
As shown in figure 12, the support 51 related with the 4th execution mode is formed on compared with near situation yoke minor axis center, and the related speaker unit 1F support 51E of present embodiment is formed near of portion of terminal 6F.And the related lead-out wire 4F of present embodiment forms the curved shape corresponding with the formation position of support 51E.
In the speaker unit 1F of said structure, the length of drawing the lead-out wire 4F between path 7 and support 51E is long compared with the 4th execution mode, and therefore braking is better.
And, because support 5E is configured near of portion of terminal 6F, thus can be suppressed on lead-out wire vibrate, junction surface that pressure etc. acts on lead-out wire 4 and portion of terminal 6F, lead-out wire 4 be from phenomenons such as portion of terminal 6F come off.
［ the 6th execution mode ］
Figure 13 is the plane graph of the related speaker unit 1G of the 6th execution mode of the present invention.In the 4th～6th execution mode, omit the explanation to same structure etc.
As shown in figure 13, the path 7 of drawing of the magnetic circuit 2G of the related speaker unit 1G of present embodiment is formed near the minor axis center of yoke 21G.And portion of terminal 6G is formed on roughly near the bight of rectangular magnetic circuit 2G, support 51G is formed near of this portion of terminal 6G.
The lead-out wire 4 of drawing from voice coil loudspeaker voice coil 33G through the notch 71G that draws path 7G after portion of terminal 6G bending and support 51G butt, to fix with the state of portion of terminal 6G conducting.
In the speaker unit 1G of said structure, can reduce the accommodation space of length portion more than lead-out wire compared with the 4th, 5 execution modes.
And lead-out wire 4 is along major axis supporting voice coil loudspeaker voice coil 33G, therefore braking is larger compared with the 4th, 5 execution modes.
The invention is not restricted to above-mentioned execution mode.Also can implement the present invention by variety of way.And, also can combine the respective embodiments described above and implement the present invention.
For example, also can adopt external magnetic circuit as the magnetic circuit of speaker unit involved in the present invention.For example this external magnetic circuit have central portion form center pole yoke, be entrenched in the ringshaped magnet in the center pole of this yoke and be formed on the annular plate on above-mentioned ringshaped magnet, at least any one party in magnet and flat board is formed with the notch of drawing path.
In the speaker unit of external magnetic circuit that adopts said structure, the lead-out wire that voice coil loudspeaker voice coil from matched in clearance magnetic circuit is drawn is through the notch of drawing path, and be connected with the portion of terminal being formed on framework, therefore can reduce the phenomenon that lead-out wire contacts with miscellaneous part.
And in the above-described embodiment, the path 7 of drawing of magnetic circuit 2 has adopted the notch (peristome) being formed on yoke, but is not limited to this mode.The through hole of drawing path and also can be formed in the yoke sidepiece of internal magnetic type magnetic circuit of for example magnetic circuit.In internal magnetic type magnetic circuit, form magnetic gap, the lead-out wire that the voice coil loudspeaker voice coil from matched in clearance in magnetic gap is drawn passes the through hole being formed on yoke, and is connected with the portion of terminal being formed on framework.In the speaker unit of said structure, can be to the magnetic field intensity of the additional approximate equality of magnetic gap.
And the voice coil loudspeaker voice coil of the related speaker unit of the 4th execution mode roughly forms rectangle, but is not limited to this mode.For example, also voice coil loudspeaker voice coil can be defined as to the shapes corresponding with loudspeaker shapes such as the trade shape that at least possesses line part, essentially rectangular, elliptical shape, circle.
In addition, in the above-described embodiment, lead-out wire 4 and support 51 butts, but be not limited to this, lead-out wire 4 can be not and support 51 butts yet.And support 51 is configured on framework 5, but is not limited to this, also can not configure support 51.
As mentioned above, speaker unit 1 involved in the present invention has the magnetic circuit 2 of the magnetic gap that is formed with matched in clearance voice coil loudspeaker voice coil 33, be fixed on directly or indirectly the vibrating body 3 on voice coil loudspeaker voice coil 33, support this vibrating body 3 and the inner framework 5 that is provided with magnetic circuit 2, connect the portion of terminal 6 of the lead-out wire 4 of voice coil loudspeaker voice coil 33, voice coil loudspeaker voice coil 33 in matched in clearance in magnetic gap G and being arranged between the portion of terminal 6 of framework 5, dispose pass for the lead-out wire 4 of drawing from voice coil loudspeaker voice coil 33 draw path 7, therefore, even more slim, small-sized speaker unit, also can reduce the generation that is contacted the allophone causing by lead-out wire 4 with miscellaneous part.And, can reduce the broken string of the lead-out wire of voice coil loudspeaker voice coil.
Claims (2)
1. a speaker unit, is characterized in that,
This speaker unit has framework, oscillating plate, edge, voice coil loudspeaker voice coil, magnetic circuit and lead-out wire,
Described edge has the cross sectional shape of concavity,
Compared with a part for described lead-out wire on the short-axis direction of magnetic circuit between described framework and described edge and the top at described edge, be disposed at described magnetic circuit side.
2. speaker unit according to claim 1, is characterized in that, a part for described lead-out wire is along the sidepiece of the yoke of described magnetic circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410119072.8A CN103987005B (en) | 2007-07-31 | 2007-07-31 | Speaker unit |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200780100097.1A CN101766035B (en) | 2007-07-31 | 2007-07-31 | Speaker apparatus |
| CN201410119072.8A CN103987005B (en) | 2007-07-31 | 2007-07-31 | Speaker unit |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200780100097.1A Division CN101766035B (en) | 2007-07-31 | 2007-07-31 | Speaker apparatus |
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| CN103987005A true CN103987005A (en) | 2014-08-13 |
| CN103987005B CN103987005B (en) | 2018-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410119072.8A Active CN103987005B (en) | 2007-07-31 | 2007-07-31 | Speaker unit |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105979445A (en) * | 2016-06-29 | 2016-09-28 | 歌尔股份有限公司 | Loudspeaker |
| CN110572757A (en) * | 2019-09-29 | 2019-12-13 | 歌尔股份有限公司 | Magnetizer and sound production device |
| CN110662143A (en) * | 2019-09-29 | 2020-01-07 | 歌尔股份有限公司 | Sound production device |
| CN110662144A (en) * | 2019-09-29 | 2020-01-07 | 歌尔股份有限公司 | Centering support piece and sound generating device |
| CN110832882A (en) * | 2017-06-28 | 2020-02-21 | 歌乐株式会社 | Loudspeaker |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE388600T1 (en) * | 2000-01-27 | 2008-03-15 | Nxp Bv | ELECTROACOUSTIC TRANSDUCER WITH MOVABLE COIL AND WITH ELASTIC FASTENING ELEMENTS FOR THE MOVABLE COIL CONNECTION CONTACTS |
| JP2004096670A (en) * | 2002-09-04 | 2004-03-25 | Matsushita Electric Ind Co Ltd | Speaker |
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2007
- 2007-07-31 CN CN201410119072.8A patent/CN103987005B/en active Active
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105979445A (en) * | 2016-06-29 | 2016-09-28 | 歌尔股份有限公司 | Loudspeaker |
| CN105979445B (en) * | 2016-06-29 | 2021-05-07 | 歌尔股份有限公司 | Loudspeaker |
| CN110832882A (en) * | 2017-06-28 | 2020-02-21 | 歌乐株式会社 | Loudspeaker |
| US10887702B2 (en) | 2017-06-28 | 2021-01-05 | Clarion Co., Ltd. | Loudspeaker |
| CN110832882B (en) * | 2017-06-28 | 2021-05-25 | 歌乐株式会社 | Loudspeaker |
| CN110572757A (en) * | 2019-09-29 | 2019-12-13 | 歌尔股份有限公司 | Magnetizer and sound production device |
| CN110662143A (en) * | 2019-09-29 | 2020-01-07 | 歌尔股份有限公司 | Sound production device |
| CN110662144A (en) * | 2019-09-29 | 2020-01-07 | 歌尔股份有限公司 | Centering support piece and sound generating device |
| CN110662143B (en) * | 2019-09-29 | 2021-03-30 | 歌尔股份有限公司 | Sound production device |
| CN110662144B (en) * | 2019-09-29 | 2021-03-30 | 歌尔股份有限公司 | Centering support piece and sound generating device |
| WO2021056899A1 (en) * | 2019-09-29 | 2021-04-01 | 歌尔股份有限公司 | Sound generation device |
| CN110572757B (en) * | 2019-09-29 | 2022-02-08 | 歌尔股份有限公司 | Sound production device |
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|---|---|
| CN103987005B (en) | 2018-01-12 |
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