CN102474687A - Magnetic circuit for speaker device and speaker device - Google Patents

Magnetic circuit for speaker device and speaker device Download PDF

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Publication number
CN102474687A
CN102474687A CN2009801603484A CN200980160348A CN102474687A CN 102474687 A CN102474687 A CN 102474687A CN 2009801603484 A CN2009801603484 A CN 2009801603484A CN 200980160348 A CN200980160348 A CN 200980160348A CN 102474687 A CN102474687 A CN 102474687A
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CN
China
Prior art keywords
voice coil
vibration
speaker unit
magnetic
loudspeaker voice
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Pending
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CN2009801603484A
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Chinese (zh)
Inventor
堀米实
小林博之
引地俊博
古头晶彦
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Nippon Tokita Pioneer K K
Pioneer Corp
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Nippon Tokita Pioneer K K
Pioneer Corp
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Application filed by Nippon Tokita Pioneer K K, Pioneer Corp filed Critical Nippon Tokita Pioneer K K
Publication of CN102474687A publication Critical patent/CN102474687A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

A thin magnetic circuit for driving a flat voice coil which allows a reduction in the thickness of a speaker device. A magnetic circuit (20) for a speaker device is provided with magnetic gaps (20G) arranged in the direction of vibration of a voice coil (30). Among magnetic pole surfaces partitioned by a voice coil facing the magnetic gaps, a magnetic pole surface on one side is provided with a first magnetic pole surface (20X) comprising a magnetic body including a magnet (21) and also with a second magnetic pole surface (20Y) comprising a plate-like magnetic body magnetically joined to the magnet. In the plate-like magnetic body, a joint surface, which is located between the plate-like magnetic body and the magnetic body forming the first magnetic pole surface, and the second magnetic pole surface are formed in a step-like shape, and the first magnetic pole surface and the second magnetic pole surface have substantially the same height.

Description

Speaker unit is with magnetic circuit and speaker unit
Technical field
The present invention relates to a kind of speaker unit with magnetic circuit and speaker unit.
Background technology
As general speaker unit, known have a coil-moving speaker device (for example, with reference to patent documentation 1).As shown in Figure 1; This coil-moving speaker device for example possess framework 3J, taper oscillating plate 21J, with oscillating plate 21J be bearing in framework 3J edge 4J, be bonded on the interior perimembranous of oscillating plate 21J speech coil framework 610J, speech coil framework 610J is bearing in the damper 7J of framework 3J, the voice coil loudspeaker voice coil 611J that is wrapped in speech coil framework 610J, yoke 51J, magnetite 52J, thin plate 53J, and have the magnetic circuit of the magnetic gap that forms configuration voice coil loudspeaker voice coil 611J.In this speaker unit, if audio signal is input to voice coil loudspeaker voice coil 611J, then speech coil framework 610J is through being created in the Lorentz force vibration of the voice coil loudspeaker voice coil 611J in the magnetic gap, through this vibratory drive oscillating plate 21J.
Patent documentation 1: the openly flat 8-149596 communique of Japan Patent (the 1st figure)
Summary of the invention
Invent problem to be solved
As shown in Figure 1; Above-mentioned general coil-moving speaker device is for example with respect to the sound equipment of oscillating plate 21J radiation side and set voice coil loudspeaker voice coil 611J at opposition side, and constitutes the direction of vibration of voice coil loudspeaker voice coil 611J and speech coil framework 610J and the direction of vibration of oscillating plate 21J becomes equidirectional.In this speaker unit; The zone etc. that is used for the zone of oscillating plate 21J vibration, the zone that is used for speech coil framework 610J vibration, configuration magnetic circuit forms along the direction of vibration (sound equipment radiation direction) of oscillating plate 21J, so become the height overall of the speaker unit structure that becomes bigger of having to.
In more detail; As shown in Figure 1, comprise as follows along the size of the direction of vibration of the oscillating plate 21J of speaker unit: be bearing in the height overall (a) of the edge 4J of framework 3J along the size of the direction of vibration of taper oscillating plate 21J, with oscillating plate 21J, from the junction surface of oscillating plate 21J and speech coil framework 610J to speech coil framework height (b), the voice coil loudspeaker voice coil height overall (c) of the upper end of voice coil loudspeaker voice coil 611J, be equivalent to the thickness (e) etc. of the main yoke 51J of main magnetite height (d), magnetic circuit from the magnetic circuit of the height of bottom to yoke 51J of voice coil loudspeaker voice coil 611J.In this speaker unit; Vibratility adjustment in order to ensure sufficient oscillating plate 21J; The height of above-mentioned a, b, c, d need be fully guaranteed, and, the height of above-mentioned c, d, e need be fully guaranteed in order to obtain sufficient actuating force; So especially in big volume corresponding speaker unit, the height overall of speaker unit must not be constant big.
Like this; In speaker unit in the past; The direction of vibration of the direction of vibration of speech coil framework 610J and oscillating plate 21J becomes equidirectional; So obtain big volume if want to strengthen the amplitude of oscillating plate 21J, then cause total hypermutation of speaker unit big in order to ensure the vibratility adjustment of speech coil framework 610J, be difficult to the slimming of implement device.That is, existence is difficult to take into account the slimming of device and the problem of big volumeization.
Consider following method as the method that addresses this problem: the direction of vibration of voice coil loudspeaker voice coil is made as the direction different with the direction of vibration of oscillating plate, mechanically change voice coil loudspeaker voice coil vibration direction and be passed to oscillating plate.If can realize this method, even then strengthen the vibratility adjustment of voice coil loudspeaker voice coil, it can directly not influence the thickness of speaker unit yet and can realize slim speaker unit.If will realize that this method obtains slim speaker unit, problem is that the drive system that how will comprise magnetic circuit is made as flat condition.As in the past in the technology, when only the speech coil framework of cylinder being swung to the direction different with the direction of vibration of oscillating plate, the thickness of magnetic circuit increases and can't realize slimming.Requirement is made as the plane magnetic circuit that makes its voice coil loudspeaker voice coil plane earth come and go vibration and itself slimming with voice coil loudspeaker voice coil itself.
The present invention will address this is that the example as problem.That is, the objective of the invention is to: a kind of slim speaker unit that can radiate the regeneration sound of big volume with simpler structure is provided as inferior; Acquisition can realize the plane voice coil loudspeaker voice coil and the magnetic circuit that drives its voice coil loudspeaker voice coil and slimming of the slimming of speaker unit.
Be used to solve the means of problem
In order to realize this purpose, possesses the related structure of following each independent claims at least based on speaker unit of the present invention.
[claim 1] a kind of speaker unit is used magnetic circuit; It is used for the vibration of plane voice coil loudspeaker voice coil is passed to through the direction of vibration converter section of rigidity the speaker unit of oscillating plate; Make said voice coil loudspeaker voice coil plane earth vibration; It is characterized in that; Possess a plurality of magnetic gaps on the direction of vibration that is configured in said voice coil loudspeaker voice coil; The 2nd magnetic pole strength that the magnetic pole strength of a side that in these a plurality of magnetic gaps, is separated by said voice coil loudspeaker voice coil possesses the 1st magnetic pole strength that is made up of the magnetic that comprises magnetite and is made up of in the tabular magnetic of said magnetite magnetic engagement, said tabular magnetic will form ladder difference shape with the composition surface and said the 2nd magnetic pole strength of the said magnetic that forms said the 1st magnetic pole strength, make said the 1st magnetic pole strength and said the 2nd magnetic pole strength become roughly the same height.
Description of drawings
Fig. 1 is technological in the past key diagram.
Fig. 2 is the key diagram (being the cutaway view along X-direction with figure (a), with the key diagram of figure (b) for the action of expression drive division) of the basic structure of the related speaker unit of expression execution mode of the present invention.
Fig. 3 is the structure example of explanation direction of vibration converter section and the key diagram of action.
Fig. 4 is the structure example of explanation direction of vibration converter section and the key diagram of action.
Fig. 5 is the key diagram (Fig. 5 (a) is an end view, and Fig. 5 (b) is an oblique view, and Fig. 5 (c) is an A portion enlarged drawing) of the formation example of expression direction of vibration converter section.
Fig. 6 is the key diagram of the formation example of expression direction of vibration converter section.
Fig. 7 is the key diagram (being the cutaway view along X-direction with figure (a), with the key diagram of figure (b) for the action of expression drive division) that the speaker unit of direction of vibration converter section is adopted in expression.
Fig. 8 is the key diagram (being the cutaway view along X-direction with figure (a), with the key diagram of figure (b) for the action of expression drive division) that the speaker unit of direction of vibration converter section is adopted in expression.
Fig. 9 is the key diagram of the concrete direction of vibration converter section of expression.
Figure 10 is the key diagram of the concrete direction of vibration converter section of expression.
Figure 11 is the key diagram of other examples of expression direction of vibration converter section.
Figure 12 is the key diagram of other examples of expression direction of vibration converter section.
Figure 13 is the key diagram of other examples of expression direction of vibration converter section.
Figure 14 is the key diagram of other examples of expression direction of vibration converter section.
Figure 15 is the key diagram of the related speaker unit of expression execution mode of the present invention with magnetic circuit.
Figure 16 is the key diagram of the related speaker unit of expression execution mode of the present invention with magnetic circuit.
Figure 17 is the key diagram of expression embodiments of the invention.
Figure 18 is the key diagram of expression embodiments of the invention.
Figure 19 is the key diagram of expression embodiments of the invention.
Figure 20 is the key diagram of expression embodiments of the invention.
Figure 21 is the key diagram of expression embodiments of the invention.
Figure 22 is the key diagram of expression embodiments of the invention.
Figure 23 is the key diagram of expression embodiments of the invention.
Figure 24 is the key diagram of expression embodiments of the invention.
Figure 25 is the key diagram of expression embodiments of the invention.
Figure 26 is the key diagram of expression embodiments of the invention.
Figure 27 is the key diagram of expression variation of the present invention.
Figure 28 is the key diagram that expression possesses the electronic equipment of the related speaker unit of execution mode of the present invention.
Figure 29 is the key diagram that expression possesses the automobile of the related loud speaker of execution mode of the present invention.
Embodiment
Below, with reference to description of drawings execution mode of the present invention.Though execution mode of the present invention comprises illustrated content, is not limited only to this.In addition, in the explanation of each figure afterwards, part is omitted repeat specification with the common additional prosign of part in the position of having explained.And, the magnetic circuit of stating after as the magnetic circuit of the best mode that is used to carry out an invention being shown in Figure 15, for example explanation for ease illustrates different magnetic circuits in Fig. 2, and is also identical in other figure.
[the basic structure of speaker unit; Fig. 2]
Fig. 2 is the key diagram (being the cutaway view along X-direction with figure (a), with the key diagram of figure (b) for the action of expression drive division) of the basic structure of the speaker unit in the expression execution mode of the present invention.Speaker unit 1 possess oscillating plate 10, along direction of vibration vibration support freely oscillating plate 10 stationary part 100, be located at stationary part 100 and will vibrate and supply with the drive division 14 of giving oscillating plate 10 according to audio signal, drive division 14 possess the magnetic circuit 20, input audio signal and the edge that form magnetic gap 20G and the direction of vibration different directions vibration of oscillating plate 10 voice coil loudspeaker voice coil 30, change voice coil loudspeaker voice coil 30 vibration direction and pass to the direction of vibration converter section 50 of oscillating plate 10.In the diagram, voice coil loudspeaker voice coil 30 is bearing in voice coil loudspeaker voice coil support 40, but also can be that voice coil loudspeaker voice coil 30 links with oscillating plate changes direction end 50 itself.At this, the direction of vibration of voice coil loudspeaker voice coil 30 is made as X-direction, 2 directions of quadrature therewith are made as Y direction and Z-direction respectively.
It can be essentially rectangular that the plane of oscillating plate 10 is overlooked, perhaps circular or oval, perhaps other shapes.And that the section shape of oscillating plate 10 for example can form is plate shaped, cheese, taper isotactic shaped.The section shape of the oscillating plate 10 of illustrative example is the plane, but also can be curved shape.And, establish the height overall of oscillating plate 10 smaller as required and to seek the slimming of speaker unit 1 also harmless.
Stationary part 100 is for the general name at the position of the vibration of supporting oscillating plate 10 and drive division 14 etc., at this, framework 12, have concurrently framework 12 function after the yoke portion, installation unit etc. that state be equivalent to stationary part 100.Be not that refer to stationary part 100 itself is static fully, its integral body also can receive drive division 14 vibration influence or receive other power and vibrate.The peripheral part of oscillating plate 10 is bearing in the framework 12 as stationary part 100 through edge 11.
Drive division 14 possesses magnetic circuit 20, voice coil loudspeaker voice coil 30, direction of vibration converter section 50, and voice coil loudspeaker voice coil 30 vibrates to a direction of principal axis along the magnetic gap 20G of magnetization circuit 20, and direction of vibration converter section 50 is changed the direction of its vibrations and passed to oscillating plate 10.In embodiment illustrated; Voice coil loudspeaker voice coil 30 vibrates along X-direction; Oscillating plate 10 is to the Z-direction vibration configuration freely of quadrature therewith, direction of vibration converter section 50 with the vibration of the X-direction of voice coil loudspeaker voice coil 30 convert into itself change tiltedly establish angle, thereby oscillating plate 10 is vibrated to Z-direction.
Magnetic circuit 20 possesses magnetite 21 (21A, 21B) and pole piece (yoke portion) 22 (22A, 22B), so that a plurality of magnetic gap 20G arranges along the direction of vibration (for example X-direction) of voice coil loudspeaker voice coil 30.At this; Set the pole orientation of magnetite 21 (21A, 21B); So that the magnetic direction of a pair of magnetic gap 20G becomes (± Z-direction) in the other direction each other; And the voice coil loudspeaker voice coil 30 of conductive component is twined in configuration, so that the electric current that flows through rightabout (± Y direction) with respect to the magnetic gap 20G that in the opposite direction has magnetic field makes at voice coil loudspeaker voice coil 30 to produce along the actuating force (Lorentz force, electromagnetic force) of the direction (± X-direction) of magnetic gap 20G thus.The configuration relation of magnetite 21 and pole piece (yoke portion) 22 is not limited to embodiment illustrated.
Voice coil loudspeaker voice coil 30 twines the lead (conductive component) of input audio signal and forms, and itself vibrates to be configured in stationary part 100 freely or to be configured in stationary part 100 freely through 40 vibrations of voice coil loudspeaker voice coil support.Voice coil loudspeaker voice coil support 40 for example can be formed by plate shaped insulating element, in its surface or interior support voice coil loudspeaker voice coil 30.For example form voice coil loudspeaker voice coil support 40 by plate shaped insulating element, thus can be to voice coil loudspeaker voice coil 30 whole additional rigidity (also comprising flexural rigidity, torsion rigidity).
And, in plate shaped insulating element, be formed with a plurality of conductive layers in the outside of lead as voice coil loudspeaker voice coil support 40.This conductive layer (voice coil loudspeaker voice coil lead-out wire) 32 (with reference to Figure 21) are electrically connected with the lead-out wire 31 (with reference to Figure 21) of drawing from the starting point and the terminal point of lead.This lead-out wire 31 (with reference to Figure 21) for example by after the part of the conductive component stated constitute.And, through after the maintaining part 15 (with reference to Figure 21) stated be connected with external electric, and as the trunk line performance function that will be input to voice coil loudspeaker voice coil 30 from the audio signal of outside.And, in the time of for example will centering in speaker unit as trunk line with respect to the lead that voice coil loudspeaker voice coil dissociates, in addition need be around the space of distribution.But, through being formed on the surface of voice coil loudspeaker voice coil support 40, need not the space of guaranteeing that trunk line is used thus as conductive layer (voice coil loudspeaker voice coil lead-out wire) 32 (with reference to Figure 21) of trunk line, can make the speaker unit slimming.
In embodiment illustrated, voice coil loudspeaker voice coil 30 and voice coil loudspeaker voice coil support 40 form plate shaped, but are not limited thereto, and also can form barrel shape.And, when the voice coil loudspeaker voice coil support 40 of voice coil loudspeaker voice coil 30 or supporting voice coil loudspeaker voice coil 30 is barrel shape, also can the plate shaped cap that the change of direction of vibration converter section angle is linked freely be installed in the end of direction of vibration converter section 50 sides.
This voice coil loudspeaker voice coil 30 remains on stationary part 100 through omitting illustrated maintaining part.Maintaining part has when keeping voice coil loudspeaker voice coil 30 or voice coil loudspeaker voice coil support 40 with respect to stationary part 100 freely along direction of vibration (for example X-direction) vibration, the structure that regulation Cheng Buxiang direction beyond this moves.For example, maintaining part can be along the distortion of the direction of vibration (for example, X-direction) of voice coil loudspeaker voice coil 30, can be through having the twisted plate parts formation of rigidity in the direction of intersecting with this direction of vibration.And voice coil loudspeaker voice coil 30 is with respect to the length on the direction of vibration of voice coil loudspeaker voice coil 30, can be with establishing greatlyyer with respect to the length of the voice coil loudspeaker voice coil on the direction of the direction of vibration quadrature of voice coil loudspeaker voice coil 30, thus when speaker drive, can obtain bigger actuating force.
Direction of vibration converter section 50 possesses: angle changes the shaft portion 51 of the rigidity that geocline freely establishes between voice coil loudspeaker voice coil 30 or voice coil loudspeaker voice coil support 40 and oscillating plate 10; Be formed on the two ends of shaft portion 51 and become the articular portion 52 of the fulcrum that the angle of direction of vibration converter section 50 changes.The linking portion 53 of direction of vibration converter section 50 is with respect to oscillating plate 10 or voice coil loudspeaker voice coil 30; Perhaps with respect to the installing component 200 that comprises except that oscillating plate 10 or the miscellaneous part the voice coil loudspeaker voice coil 30; For example by as the binding agent of attachment or two-sided tape, link, and articular portion 52 is configured near installing component 200 as the binding parts of the screw of concluding parts etc.In embodiment illustrated, the linking portion 53 (53A) of an end of direction of vibration converter section 50 links with linking part 60 through voice coil loudspeaker voice coil 30 or voice coil loudspeaker voice coil support 40, but also can directly not link through linking part 60.Linking part 60 is formed between the end of direction of vibration converter section side of end and voice coil loudspeaker voice coil 30 or voice coil loudspeaker voice coil support 40 of the voice coil loudspeaker voice coil side in the direction of vibration converter section 50, and make both ends along direction of vibration across linking at interval.And linking part 60 absorbs the thickness of magnetic circuit 20, seeks the slimming of speaker unit.
In addition, be formed with the contact avoidance portion 70 that contacts that avoids with articular portion 52 in face side near the installing component 200 of the articular portion 52 of direction of vibration converter section 50.This contact avoidance portion 70 also engages the attachment restrictions performance function of the attachment of direction of vibration converter section 50 and installing component 200 as restriction.This contact avoidance portion 70 forms concavity along articular portion 52.For example; As recess or notch or slot part etc.; Between articular portion 52 and the surface near the installing component 200 of the configuration articular portion 52, form predetermined space, the bonding parts that suppress between direction of vibration converter section 50 and installing component 200 relate to articular portion 52.In embodiment illustrated, notch 71 is formed near articular portion 52 (52A) as contact avoidance portion 70 at the linking part that becomes installing component 200 60, recess 72 is formed near articular portion 52 (52B) as contact avoidance portion 70 at oscillating plate 10.Thus; The end face of the linking portion 53 of direction of vibration converter section 50 and linking part 60 or oscillating plate 10 is by the attachment of binding agent or two-sided tape etc. when bonding; The binding agent that overflows towards articular portion 52 or the end of two-sided tape get into notch 71 or recess 72, thereby make it can not touch articular portion 52 and adhere to.
Shown in figure (a), this speaker unit 1 at the voice coil loudspeaker voice coil 30 of drive division 14 as signal of telecommunication input audio signal SS, thereby as shown in the figure (b), voice coil loudspeaker voice coil 30 or voice coil loudspeaker voice coil support 40 along the magnetic gap 20G of magnetization circuit 20 for example to illustrated X-direction vibration.Thus, the direction of this vibration is delivered to oscillating plate 10 through 50 conversions of direction of vibration converter section, makes oscillating plate 10 for example to illustrated Z-direction vibration and to the sound of sound equipment radiation direction SD radiation according to audio signal.
According to this speaker unit 1; Make the direction of vibration of voice coil loudspeaker voice coil 30 and the direction of vibration of oscillating plate 10 become different directions through direction of vibration converter section 50; So compare rear side that can slimming oscillating plate 10 along the situation of the direction of vibration of oscillating plate 10 vibration with making voice coil loudspeaker voice coil 30.Can obtain thus can be by the regenerate slim speaker unit of bass area of high sound pressure.
In addition; The direction of the vibration through direction of vibration converter section 50 conversion voice coil loudspeaker voice coils 30 is also passed to oscillating plate 10; So strengthen the amplitude of voice coil loudspeaker voice coil 30, thereby even strengthen the amplitude of oscillating plate 10, the thickness (height overall of speaker unit) of the sound equipment radiation direction of speaker unit 1 can not become big yet.Thus, can obtain to radiate the slim speaker unit of the regeneration sound of big volume.
And; When using linking portion 53 that binding agent links direction of vibration converter section 50 with installing component 200 as attachment; The binding agent diffusion is stretched and is overflowed towards articular portion 52 if follow this joint; And adhere to binding agent in articular portion 52, then articular portion 52 is solidified and might be become inactive.And when using two-sided tape as attachment, overflow towards articular portion 52 end of this two-sided tape, adheres to two-sided tape in articular portion 52, and then articular portion 52 is solidified and might be become inactive.In addition, the end of binding agent or two-sided tape etc. is adhered to and articular portion 52 alternating bendings of solidifying or tortuous or rotatablely move and have the worry of breaking.If articular portion 52 is broken, then the position adhered to such as the end of binding agent or two-sided tape contacts repeatedly or away from the installing component 200 of oscillating plate 10 or voice coil loudspeaker voice coil 30 or miscellaneous part etc., different sound (impact sound) can take place all at every turn like this.On the other hand; If reduce the coated weight of binding agent or based on the bonding area of two-sided tape; In order to avoid overflow the ends of binding agent or two-sided tape etc. attached to articular portion 52; Then direction of vibration converter section 50 reduces with the binding strength of installing component 200, and produces from end face and to peel off and become the root of different sound, or and then causes peeling off fully and have a problem of the destruction that involves loud speaker.In addition; Because of articular portion 52 be configured in installing component 200 near, so sometimes articular portion 52 touch installing component 200 and damage articular portion 52 or direction of vibration converter section 50 can't be crooked or tortuous with respect to installing component 200 or be rotated motion.But, in this speaker unit 1, because of being formed with contact avoidance portion 70 in face side near the installing component 200 of articular portion 52, so when suppressing with the contacting of joint component 52, the different sound generation that can suppress to cause etc. by contact.And; Even for the linking portion that links direction of vibration converter section 50 53 with installing component 200 and bonded blocks such as binding agent that uses or two-sided tape overflow; Entering also has as the contact avoidance portion 70 of the function of attachment restrictions and attached to articular portion 52, thereby also can suppress to hinder the movable of articular portion 52.Thus, when keeping the binding strength of direction of vibration converter section 50 and installing component 200, can also keep the function of articular portion 52 than the highland.Direction of vibration converter section 50 positively carries out bending or complications with respect to installing component 200 or rotatablely moves, so the articular portion 52 that can suppress to cause because of breaking is to the contact of installing component 200 or the generation of different sound etc.
[direction of vibration converter section; Fig. 3～Figure 14]
Fig. 3 and Fig. 4 are the structure example of explanation direction of vibration converter section 50 and the key diagram of action.The direction of the vibration of conversion the voice coil loudspeaker voice coil 30 and direction of vibration converter section 50 of passing to the rigidity of oscillating plate 10 has shaft portion 51, said shaft portion respectively in oscillating plate 10 sides with voice coil loudspeaker voice coil 30 sides formation articular portion 52 and tiltedly establish with respect to the direction of vibration of voice coil loudspeaker voice coil 30.At this, articular portion 52 is meant that rotation engages 2 freely and has the part of rigid parts or make the incorporate tortuous or crooked part freely of 2 parts with rigidity, and shaft portion 51 is parts with rigidity that knuckle part 52 forms in the end.At this, rigidity is meant and can gives oscillating plate 10 degree and indeformable performance is not only to represent complete indeformable situation with the vibration transfer of voice coil loudspeaker voice coil 30.Shaft portion 51 can form tabular or bar-shaped.
In the mode example shown in Figure 3, possess 1 shaft portion 51, form articular portion 52 (52A, 52B) at its two ends, a side articular portion 52A is formed on the end of voice coil loudspeaker voice coil 30 or voice coil loudspeaker voice coil support 40, and the opposing party's articular portion 52B is formed on oscillating plate 10 sides.The opposing party's articular portion 52B both can be connected oscillating plate 10, also can be connected oscillating plate 10 through miscellaneous part.Can use known parts as miscellaneous part, for example also can select (diagram are omitted oscillating plate 10 in Fig. 3) such as metal partss of the bond strength raising of articular portion 52 and oscillating plate 10.
As figure (a) situation that shaft portion 51 is in the centre position of vibration is shown.Shaft portion 51 between voice coil loudspeaker voice coil 30 (or voice coil loudspeaker voice coil support 40) and oscillating plate 10 with angle θ 0Tiltedly establish.At this moment, from voice coil loudspeaker voice coil 30 along oscillating plate 10 direction of vibration only away from distance H 0Position Z 0The articular portion 52B of configuration oscillating plate 10 sides.Voice coil loudspeaker voice coil 30 (or voice coil loudspeaker voice coil support 40) makes direction of vibration regulation Cheng Xiangyi direction of principal axis (for example, X-direction) vibration, and oscillating plate 10 makes direction of vibration different directions (for example Z-direction) vibration of its direction of vibration regulation one-tenth and voice coil loudspeaker voice coil 30.
Shown in figure (b), the articular portion 52A of end that is formed at voice coil loudspeaker voice coil 30 is from initial position X 0Only move Δ X to direction of vibration (X-direction) 1And in-position X 1, then the angle of inclination of shaft portion 51 converts θ into 1(θ 0＞θ 1), thereby Δ Z is only moved to the direction of vibration (Z-direction) of oscillating plate 10 in the position of the articular portion 52B of oscillating plate 10 sides 1And in-position Z 1That is, oscillating plate 10 is pushed away Δ Z along direction of vibration on only 1
Shown in figure (c), the articular portion 52A of end that is formed at voice coil loudspeaker voice coil 30 is from initial position X 0Only move Δ X to direction of vibration (X-direction) 2And in-position X 2, then the angle of inclination of shaft portion 51 converts θ into 2(θ 0＜θ 2), thereby Δ Z is only moved to the direction of vibration (Z-direction) of oscillating plate 10 in the position of the articular portion 52B of oscillating plate 10 sides 2And in-position Z 2That is, oscillating plate 10 is only pressed down Δ Z along direction of vibration 2
The function of the direction of vibration converter section 50 that is made up of shaft portion 51 and articular portion 52 (52A, 52B) is so tiltedly established angle and is passed to oscillating plate 10 what the vibration of voice coil loudspeaker voice coil 30 converted that shaft portion 51 changes into, make oscillating plate 10 to the direction of vibration different directions vibration of voice coil loudspeaker voice coil 30.
Fig. 4 is used to explain other structure example of direction of vibration converter section 50 and the key diagram of action thereof.In detail; Be in the state of direction of vibration converter section 50 of the state of reference position as figure (b) expression oscillating plate 10; As scheming (a) expression oscillating plate 10, represent that as figure (c) oscillating plate 10 is with respect to the state (diagram omit oscillating plate 10) of reference position to the direction of vibration converter section 50 of the state of the opposite direction displacement of radiating side with respect to sound equipment with respect to the state of reference position to the direction of vibration converter section 50 of the state of sound equipment radiation side displacement.
This direction of vibration converter section 50 has that shaft portion 51 receives from being positioned at the reaction force of the stationary part such as framework 12 100 of the opposition side of oscillating plate side and the function of angular transition.In detail, direction of vibration converter section 50 has: an end is made as the articular portion 52A of voice coil loudspeaker voice coil 30 sides and the other end is made as the 1st shaft portion 51A of the articular portion 52B of oscillating plate 10 sides; One end is made as with the articular portion 52C of the pars intermedia of the 1st shaft portion 51 and with the other end is made as the 2nd shaft portion 51B with the articular portion 52D of stationary part 100, with the 1st shaft portion 51A and the 2nd shaft portion 51B to the direction tilted configuration different with respect to the direction of vibration of voice coil loudspeaker voice coil 30.More detailed, direction of vibration converter section 50 has: an end is made as the 1st articular portion 52A of voice coil loudspeaker voice coil 30 sides and the other end is made as the 1st shaft portion 51A of the 2nd articular portion 52B of oscillating plate 10 sides; One end is made as with the 3rd articular portion 52C of the pars intermedia of the 1st shaft portion 51A and with the other end is made as the 2nd shaft portion 51B with the 4th articular portion 52D of stationary part 100, the 1st articular portion 52A, the 2nd articular portion 52B and the 4th articular portion 52D are on the circumference with the almost equal diameter of the length of the 1st shaft portion 51A that with the 3rd articular portion 52C is the center.
In this direction of vibration converter section 50, articular portion 52D is the moving joint portion of unique invariant position, and this articular portion supports with respect to stationary part 100 (or framework 12), and will give in shaft portion 51 from the reaction force of stationary part 100.Thus, if voice coil loudspeaker voice coil 30 (or voice coil loudspeaker voice coil support 40) X from the reference position 0Only move Δ X to X-direction 1The time; Shown in Fig. 4 (a); Towards the angle of the 1st shaft portion 51A of different directions tilted configuration and the 2nd shaft portion 51B equal angular that almost rises, articular portion 52D receive from the reaction force of stationary part 100 and articular portion 52B positively with oscillating plate 10 from the reference position Z 0Push away Δ Z to Z-direction on only 1And, shown in Fig. 4 (c), if voice coil loudspeaker voice coil 30 from the reference position X 0To only moving Δ X in the other direction with the X axle 2, the angle of the 1st shaft portion 51A and the 2nd shaft portion 51B equal angular that almost descends then, articular portion 52D receive from the reaction force of stationary part 100 and articular portion 52B positively with oscillating plate 10 from the reference position Z 0To only pressing down Δ Z in the other direction with the Z axle 2
At this; The length a of shaft portion that preferably will be, the length b of shaft portion from articular portion 52C to articular portion 52B from articular portion 52A to articular portion 52C, and the length c of shaft portion from articular portion 52C to articular portion 52D in fact be made as equally, and dispose articular portion 52A and articular portion 52D with the moving direction almost parallel ground of voice coil loudspeaker voice coil 30.This linkage is as Scott-Russell mechanism is and known, and articular portion 52A, 52B, 52D are the center with articular portion 52C, and diameter is on the circumference of length (a+b=2a) of the 1st shaft portion 51A.That is, straight line through articular portion 52A and articular portion 52D and the formed angle of straight line through articular portion 52B and articular portion 52D become the right angle.Thus, if voice coil loudspeaker voice coil 30 is moved to X-direction, then the articular portion 52B edge of the 1st shaft portion 51A and the oscillating plate 10 Z axle vertical with the X axle moves, and can convert the direction of vibration of voice coil loudspeaker voice coil 30 into perpendicular direction and passes to oscillating plate 10.
Fig. 5 and Fig. 6 are the key diagrams (Fig. 5 (a) is an end view, and Fig. 5 (b) is an oblique view, and Fig. 5 (c) is an A portion enlarged drawing) of the formation example of expression direction of vibration converter section 50.As aforementioned, direction of vibration converter section 50 possesses shaft portion 51 and the articular portion 52 (52A, 52B) that is formed on its two ends.In embodiment illustrated, be formed with linking portion 53 (the 1st linking portion 53A, the 2nd linking portion 53B) through articular portion 52 in the both end sides of shaft portion 51.At this; The 1st linking portion 53A be with respect to voice coil loudspeaker voice coil 30 or voice coil loudspeaker voice coil support 40 and directly or through miscellaneous part link and with the part of voice coil loudspeaker voice coil 30 one vibration, the 2nd linking portion 53B be directly or through miscellaneous part be attached at oscillating plate 10 and with the part of oscillating plate 10 one vibration.
The integrally formed shaft portion of this direction of vibration converter section 50 51, articular portion 52A, 52B and the 1st, the 2nd linking portion 53A, 53B, articular portion 52A, 52B are by forming through the complications continuous member freely across the partial continuous of the both sides of articular portion 52A, 52B.The continuous member here can be to form shaft portion 51 and the 1st, the 2nd linking portion 53A, the whole parts of 53B, also can be the parts that form the part of shaft portion 51 and the 1st, the 2nd linking portion 53A, 53B.This 2nd linking portion 53B is set makes shaft portion 51, thereby oscillating plate 10 is vibrated with same-phase at wide region supporting oscillating plate 10.Also comprise notional complications in these said complications.
When forming direction of vibration converter section 50 by plate-shaped member, shown in Fig. 5 (b), articular portion 52 forms the linear of broad ways extension.And; Require shaft portion 51 to have indeformable rigidity, require articular portion 52 complications freely, so; Form the thickness t 2 of articular portion 52 with respect to the thickness t 1 thin wall shape ground of shaft portion 51 or linking portion 53, thereby make the parts of one have different character.
And, the variation of the thickness of articular portion 52 and shaft portion 51 is formed inclined plane type, form aspectant inclined plane 51t, 53t in end across the part of the both sides of articular portion 52.Thus, when angle change shaft portion 51, can suppress the interference of the thickness angle change of shaft portion 51.
In addition; End at the linking part 60 that becomes the installing component 200 that disposes near articular portion 52A; Form recess or notch 71 as contact avoidance portion 70; In the example shown in Fig. 5 (a), forming section shape is skewed notch, so that between articular portion 52A and linking part 60, form the space.And; Oscillating plate 10 at the installing component 200 that disposes near articular portion 52B; Form recess or notch 72 as contact avoidance portion 70, in embodiment illustrated, forming section shape is forniciform recess, so that between articular portion 52B and oscillating plate 10, form the space.Thus, can suppress articular portion 52A, 52B contacts with installing component 200.And; When being used separately as to the end face of the 1st linking portion 53A of the binding agent applying shaft portion 51 of attachment and linking part 60 and the 2nd linking portion 53B and oscillating plate 10; Even overflowing towards articular portion 52A, 52B, binding agent also gets into recess or notch 71,72; So it is non-cohesive at articular portion 52A, 52B; Also be merely non-articular portion (non-serpentine or crooked part) even adhere to, so can suppress to hinder complications action or the flexure operation of articular portion 52A, 52B with rigidity.
Example shown in Figure 6 is to make rigid parts integrated and form shaft portion or linking portion at complications continuous member freely, and articular portion is made as the part that is made up of continuous member.In the example of figure shown in (a), paste rigid element 50Q and form shaft portion 51 or linking portion 53 on surface as the continuous member 50P of complications sheet component freely.If like this, continuous member 50P extends in the partial continuous across the both sides of articular portion 52, and articular portion 52 in fact only forms in continuous member 50P complications freely.On the other hand, shaft portion 51 or the linking portion 53 at continuous member 50P stickup rigid element 50Q is formed on the part with rigidity.
In the example shown in the figure (b), paste rigid element 50Q and form shaft portion 51 or linking portion 53, so that seize continuous member 50P on both sides by the arms.At this, the part of not pasting rigid element 50Q also becomes articular portion 52.In the example of figure shown in (c), form the rigid element lamination rigid element 50Q1,50Q2 of shaft portion 51 and form multilayer.In addition, in figure (c), it is also harmless that rigid element 50Q1 or rigid element 50Q2 are made as sandwich construction.Paste rigid element 50Q locally at complications continuous member 50P freely like this, thus can integrally formed complications articular portion 52 freely and shaft portion 51, linking portion 53 with rigidity.
Continuous member 50P preferably has repeatedly the intensity and the durability of complications of articular portion 52 when the driving of speaker unit of ability only, and the complications degree ground of not sounding when moving does not repeatedly have flexibility.As concrete example, continuous member 50P can be formed by the fabric or the nonwoven fabrics of high strength fibre.Plain cloth, warp thread and the weft yarn that can be made as the homogeneous material as the example of weaving cotton cloth be the plain cloth of unlike material, whenever at a distance from 1 yarn alternately change the plain cloth of yarn material, based on the plain cloth of twisted union yarn, the plain cloth of doubling etc.; Except plain cloth, can also be made as fiber of three, four fabrics, three, four fabrics, braid, a direction doubling etc.
High strength fibre is applicable to all or local time,, thereby can obtains full intensity with respect to the vibration of voice coil loudspeaker voice coil 30 or voice coil loudspeaker voice coil support 40 along the direction of vibration configuration high strength fibre of voice coil loudspeaker voice coil support 40.When warp thread and weft yarn all are made as high strength fibre, all make machine direction tilt about 45 °, thereby can make warp thread and weft yarn bear impartial tension force and improve durability with respect to the direction of vibration of voice coil loudspeaker voice coil support 40.Can use aramid fiber, carbon fiber, glass fiber etc. as high strength fibre.And,, also can apply (giving) scavenger (vibration damping agent, brake material) for rerum naturas such as the bending stress of adjusting continuous member or rigidity.
Have rigidity as the preferred light weight easy-formation of rigid element 50Q and after solidifying, can use thermoplastic resin, thermosetting resin, metal, paper etc.Rigid element 50Q be shaped to tabular after, paste by binding agent on the surface of the part except that articular portion 52 of continuous member 50P, thereby can form direction of vibration converter section 50 as cement.And, when using thermosetting resin, resin is immersed in partly make it to solidify behind shaft portion 51 or the linking portion 53 among the cellulosic continuous member 50P to form direction of vibration converter section 50 as rigid element 50Q.And, when using resin or metal, can in shaft portion 51 and linking portion 53, make continuous member 50P and rigid element 50Q integrated through insert moulding as rigid element 50Q.
In addition; With the US20050127233 that is documented in U.S.'s application on May 12nd, 2005 in the aforesaid integrally formed relevant technology (publication number: US2005/253298), (publication number: US2005/253299), the application quotes the content of putting down in writing in the said communique for the US20050128232 of U.S.'s application on May 13rd, 2005.
Fig. 7 and Fig. 8 are the key diagrams (Fig. 7 (a) and Fig. 8 (a) are the cutaway view along X-direction, as the key diagram of figure (b) for the action of expression drive division) that the speaker unit of aforesaid direction of vibration converter section is adopted in expression.The position additional prosign common with aforesaid explanation carries out the explanation of a part to repeat specification.Among Fig. 7 and speaker unit 1A shown in Figure 8, the 1B; Possess be attached at voice coil loudspeaker voice coil support 40 and with the 1st linking portion 53A of voice coil loudspeaker voice coil support 40 one vibrations, be attached at oscillating plate 10 and with the 2nd linking portion 53B of oscillating plate 10 one vibration, be formed with the linkage 50L that possesses a plurality of shaft portion simultaneously.
Among the speaker unit 1A shown in Figure 7, direction of vibration converter section 50 is formed by the linkage 50L of the 1st shaft portion 51A that possesses rigidity and the 2nd shaft portion 51B.The 1st shaft portion 51A; At one end side forms the 1st linking portion 53A through articular portion 52A; Distolaterally form the 2nd linking portion 53B at another through articular portion 52B; The 2nd shaft portion 51B, at one end side forms the pars intermedia of the 1st shaft portion 51A through articular portion 52C, distolaterally is formed with motionless linking portion 53C through articular portion 52D with respect to the vibration of voice coil loudspeaker voice coil support 40 at another.
And; In the embodiment illustrated; The 1st linking portion 53A is through linking part 60 or directly be attached at the end of voice coil loudspeaker voice coil support 40, and the 2nd linking portion 53B directly is attached at oscillating plate 10, and motionless linking portion 53C is attached at the bottom 12A of the framework 12 that becomes stationary part 100.Bottom 12A near the framework 12 of the installing component 200 of articular portion 52D configuration forms recess or notchs 73 as contact avoidance portion 70, in embodiment illustrated, forms notch, so that between the bottom 12A of articular portion 52D and framework 12, form the space.The 1st shaft portion 51A and the 2nd shaft portion 51B be in direction of vibration (X-direction) the different directions tilted configuration with respect to voice coil loudspeaker voice coil support 40, and stationary part 100 is located at the opposition side with oscillating plate 10 sides with respect to direction of vibration converter section 50.In the embodiment illustrated, stationary part 100 is formed by the bottom 12A of framework 12, but replaces, and also can make the 22A of yoke portion of magnetic circuit 20 extend to the below of direction of vibration converter section 50 and the 22A of this yoke portion is made as stationary part 100.
Shown in Fig. 7 (b); The articular portion 52A of voice coil loudspeaker voice coil support 40 sides is along with moving of voice coil loudspeaker voice coil support 40 moved to X-direction; The articular portion 52D that is attached at stationary part 100 becomes fixing state; And the reaction force through accepting from stationary part 100, articular portion 52A mobile converts the angle that the 1st shaft portion 51A and the 2nd shaft portion 51B are changed to, and the articular portion 52B of oscillating plate 10 sides is moved to the direction of vibration (for example Z-direction) of oscillating plate 10.
Speaker unit 1B shown in Figure 8 is the unit of the mutual arranged opposite of left and right symmetrically drive division 14 shown in Figure 7; Possess drive division 14 (R), 14 (L), be provided with linkage 50L (R), 50L (L), voice coil loudspeaker voice coil support 40 (R), 40 (L), magnetic circuit 20 (R), 20 (L) and linking part 60 (R), 60 (L) at separately drive division 14 (R), 14 (L).
And; With regard to linkage 50L (R), (L), a pair of the 1st shaft portion 51A of arranged opposite, a pair of the 2nd shaft portion 51B, a pair of the 1st linking portion 53A, the 2nd linking portion 53B, motionless linking portion 53C becomes one and form direction of vibration converter section 50.A pair of the 1st linking portion 53A is attached at voice coil loudspeaker voice coil support 40, the 2 linking portion 53B respectively and is attached at oscillating plate 10, and motionless linking portion 53C is attached at the bottom 12A of framework 12.
If like this, shown in Fig. 8 (b), be made as the opposite direction that makes its same period, thereby can merge the actuating force of 2 drive divisions 14 (R), 14 (L) and make oscillating plate 10 vibrations through direction of vibration with voice coil loudspeaker voice coil support 40 (R), 40 (L).And, because of the articular portion 52B of oscillating plate 10 sides can be set at a plurality of positions,, and can merge the phase place of the vibration of oscillating plate 10 so the supporting point of oscillating plate 10 increases.
Fig. 9 and Figure 10 represent that more specifically (Fig. 9 (a) is an oblique view to the key diagram of direction of vibration converter section; Fig. 9 (b) is the enlarged drawing as the A portion among the figure (a); Figure 10 (a) is for elongating the plane graph that articular portion makes the state of general planarization, and Figure 10 (b) is for elongating the end view that articular portion makes the state of general planarization).In this example; Direction of vibration converter section 50 is formed by an incorporate part; Respectively form articular portion 52A, 52B at a pair of the 1st shaft portion 51A with its two ends as aforementioned, form articular portion 52C, 52D respectively with its two ends at a pair of the 2nd shaft portion 51B.And; Distolaterally form the 1st linking portion 53A at one of a pair of the 1st shaft portion 51A through articular portion 52A; Between another the distolateral articular portion 52B that is formed at a pair of the 1st shaft portion 51A, form the 2nd linking portion 53B, between another the distolateral articular portion 52D that is formed at the 2nd shaft portion 51B, form motionless linking portion 53C.And the 1st shaft portion 51A, 51A and the 2nd linking portion 53B complications become convex, and the 2nd shaft portion 51B, 51B and motionless linking portion 53C complications become concavity.
Shown in Fig. 9 (b), articular portion 52A is formed by aforesaid continuous member 50P complications freely, is pasted with aforesaid rigid element 50Q at the 1st shaft portion 51A, also is pasted with aforesaid rigid element 50Q at the 1st linking portion 53A.And aforesaid all articular portion form identical structure.And, at opposed inclined plane 51t, the 53t of being formed with of each articular portion.
Shown in Figure 10 (a), the direction of vibration converter section 50 that is made up of shaft portion 51A, 51B, each articular portion, linking portion 53A, 53B, 53C is formed by the flat parts of one.Mode with the flat parts of linearity ground crosscut one forms articular portion 52A, forms articular portion 52B, 52C, 52D with the mode of the flat parts of crosscut one partly.And, form the pair of notches 50S of portion through long side direction, thereby cut out and form the 2nd shaft portion 51B, 51B and motionless linking portion 53C along the flat parts of one.
Shown in Figure 10 (b); For form this direction of vibration converter section 50 for example on as the continuous member 50P of sheet component whole coating be used to form the resin material etc. of rigid element 50Q and carry out lamination, gone forward side by side behavior and formed the demoulding of V font of inclined plane 51t, the 53t of each articular portion and its both sides.Afterwards, form aforesaid notch 50S and resin material is solidified.Resin material in this use can use aqueous uncured resin material or resin film.
And, when forming inclined plane 51t, the 53t of each articular portion and its both sides, also can with forms rigid element 50Q while moulding by resin material.At this moment, preferably be pre-formed groove or the recess that section shape is the V font at the mould of moulding rigid element 50Q.
Figure 11, Figure 12, Figure 13 are the key diagrams (Figure 11 (a) is an end view, and Figure 11 (b) is an oblique view, and Figure 12 is action specification figure, and Figure 13 (a) and (b) are for forming the key diagram of example) of other examples of expression direction of vibration converter section 50.This direction of vibration converter section 50 (linkage 50L) makes direction of vibration converter section 50 each other roughly during the left and right symmetrically arranged opposite when a pair of drive division is set, form parallel rod by a plurality of shaft portion.
Direction of vibration converter section 50 has an end is made as with the articular portion 52A (R) of the 1st linking portion 53A (R), 53A (L), 52A (L) and with the other end and is made as articular portion 52B (R), a pair of the 1st shaft portion 51A (R) of 52B (L), 51A (L) with the 2nd linking portion 53B.And, have an end is made as with the articular portion 52C (R) of the pars intermedia of the 1st shaft portion 51A (R), 51A (L), 52C (L) and with the other end and be made as articular portion 52D (R), a pair of the 2nd shaft portion 51B (R) of 52D (L), 51B (L) with motionless linking portion 53C.As aforementioned; The 1st linking portion 53A directly or through the linking part 60 as miscellaneous part is attached at voice coil loudspeaker voice coil 30 or voice coil loudspeaker voice coil support 40; The 2nd linking portion 53B is attached at oscillating plate 10, and motionless linking portion 53C is attached at the bottom 12A of the framework 12 that becomes stationary part 100 or the yoke portion 22 of formation magnetic circuit 20 etc.
In addition; Have the 3rd shaft portion 51C (R), (L); The one of which end for from the 1st linking portion 53A (R), a pair of linking portion 53D (R), the articular portion 52E (R) of 53D (L), 52E (L) that 53A (L) one extends, and the other end is articular portion 52F (R), the 52F (L) of the linking portion 53E of the 2nd linking portion 53B and one.
And the 1st shaft portion 51A (R) and the 3rd shaft portion 51C (R), the 1st shaft portion 51A (L) and the 3rd shaft portion 51C (L), the 2nd shaft portion 51B (R) and the 3rd shaft portion 51C (L), the 2nd shaft portion 51B (L) and the 3rd shaft portion 51C (R) form parallel rod respectively.
In fact the linkage 50L of this direction of vibration converter section 50 has the linkage of combination mode example shown in Figure 7 and the function of parallel linkage; Make rigid element 50Q integrated and form each shaft portion and linking portion at continuous member 50P; Each articular portion between the shaft portion is formed linear by complications continuous member 50P freely, shaft portion is integrally formed through articular portion each other.
In the embodiment illustrated; The 2nd linking portion 53B near articular portion 52F (R), 52F (L) configuration forms recesses 76 with a pair of linking portion 53D (R) that disposes near articular portion 52A (R), 52A (L), 53D (L) as contacting avoidance portion 70, so that between each articular portion and linking portion, form the space.
The action of this direction of vibration converter section 50 is described according to Figure 12.In this example, the motionless linking portion 53C that is bearing in framework 12 is as stationary part 100 performance functions.According to this direction of vibration converter section 50; If articular portion 52A (R), (L) move to X1 from the reference position X0 of X-direction through the vibration of voice coil loudspeaker voice coil support 40; Then through parallel linkage the 2nd linking portion 53B with keep parastate with the linking portion 53E of its one and rise, and angle changes to the 1st shaft portion 51A (R), (L) and the 3rd shaft portion 51C (R), (L) that form parallel rod and holds up.At this moment; Because of articular portion 52D (L), (R) two supports by the motionless linking portion 53C that becomes stationary part; Change so accept positively to carry out the angle of the 1st shaft portion 51A (R), (L) and the 3rd shaft portion 51C (R), (L), will positively convert the displacement to position Z1 into to the displacement of position X1 from the position X0 of articular portion 52A (R), (L) from the position Z0 of oscillating plate 10 from the reaction force of stationary part.
Likewise; If articular portion 52A (R), (L) move to X2 from the reference position X0 of X-direction; Then through parallel linkage the 2nd linking portion 53B with keep parastate with the linking portion 53E of its one and descend, and angle changes to the 1st shaft portion 51A (R), (L) and the 3rd shaft portion 51C (R), (L) that form parallel rod and falls down.At this moment; Because of articular portion 52D (R), (L) are bearing in stationary part; Change so accept positively to carry out the angle of the 1st shaft portion 51A (R), (L) and the 3rd shaft portion 51C (R), (L), will positively convert the displacement to position Z2 into to the displacement of position X2 from the position X0 of articular portion 52A (R), (L) from the position Z0 of oscillating plate 10 from the reaction force of stationary part.
Convert the vibration of the Z-direction of articular portion 52B (R), (L), 52F (R), (L) and the 2nd linking portion 53B with roughly the same phase place/roughly the same amplitude vibration into according to the vibration of the X-direction of 50, one voice coil loudspeaker voice coil supports 40 of this direction of vibration converter section.Thus, so the vibration that oscillating plate 10 bears roughly the same phase place/roughly the same amplitude in wide region supporting is the vibration that can transmit voice coil loudspeaker voice coil support 40 with same-phase roughly with respect to the oscillating plate 10 on the plane of wide area.
Shown in Figure 11 (b); Direction of vibration converter section 50 is respectively to a pair of linking portion 53B of wide cut direction configured in parallel, 53D (R), (L), the 3rd shaft portion 51C (R), (L); Form two strand of the 1st shaft portion 51A (R), (L) and therebetween portion form and the 2nd shaft portion 51B (R), the articular portion 52C (R) of (L), (L), the 2nd shaft portion 51B (R), (L) and linking portion 53C are provided between a pair of linking portion 53B of Width configured in parallel, 53D (R), (L) and the 3rd shaft portion 51C (R), (L).
Through forming shaft portion, can make it vibration like this by surface bearing oscillating plate 10 by 1 sheet (tabular) part, thus can make oscillating plate 10 integral body with roughly same-phase vibration, and can suppress to cut apart vibration.
And; Shown in Figure 11 (b); The direction of vibration converter section 50 of this mode makes the whole tortuous one-tenth boss shape of a plate-shaped member that forms shaft portion and forms the 1st shaft portion 51A (R), (L) and the 2nd linking portion 53B; The part cuts out this plate-shaped member and makes it tortuous one-tenth concave table, thereby forms the 2nd shaft portion 51B (R), (L) and motionless linking portion 53C.
The formation method of this direction of vibration converter section 50 is described according to Figure 13.As a formation method; Shown in Figure 13 (a); This direction of vibration converter section 50 is fitted a plurality of (2) sheets (tabular) part 501,502 and is formed; Flat parts 501 a side forms the 1st linking portion 53A (R), (L), the 1st shaft portion 51A (R), (L), the 2nd shaft portion 51B (R), (L), the 2nd linking portion 53B and motionless linking portion 53C, at the opposing party's flat parts 502 formation linking portion 53D, the 3rd shaft portion 51C (R), (L) and linking portion 53E.And; When forming linking portion 53D (R), (L) and the 3rd shaft portion 51C (R), (L), be formed with and the 2nd shaft portion 51B (R), (L) and motionless linking portion 53C corresponding opening 502A at flat parts 502 along the 1st shaft portion 51A (R), (L) and the 2nd linking portion 53B.
In this example, be formed on to form from an end of the opposing party's flat parts 502 and enlarge towards the inboard with the 2nd shaft portion 51B (R) of a side flat parts 501, (L) with the size of the opening 502A of the corresponding the opposing party's of motionless linking portion 53C flat parts 502.Through like this, suppress the 2nd shaft portion 51B (R), (L) and motionless linking portion 53C and contact, and moving of linkage carried out sleekly with other flat parts 502.
Flat parts 501,502 forms through continuous member 50P and rigid element 50Q, shown in Figure 13 (b), under the state that makes continuous member 50P opposite, links 2 parts 501,502.Integrated thus continuous member 50P and can carry out the complications of articular portion 52 sleekly.In this situation,, also form recess or notch 76 as contact avoidance portion 70 at position near articular portion 52.
And, near each articular portion, be formed with the inclined plane shown in Fig. 5 (c) in the end of each shaft portion.When shaft portion when articular portion is tortuous, the inclined plane forms mutually noninterfere, shaft portion can be carried out complications expeditiously in articular portion.
Form example as other; Shown in Figure 13 (c); In the end of aforesaid flat parts 501 and integrally formed aforesaid flat parts 502, and folding to the direction of arrow through continuously by fold line f, thus Figure 11 and direction of vibration converter section 50 shown in Figure 12 can be obtained.In this example; Identical with example shown in Figure 10; Through can simply forming as follows: lamination is used for whole resin material that forms rigid element 50Q on as the continuous member 50P of flat parts; Carry out the demoulding, form aforesaid notch 50S and opening 502A afterwards and make resin material curing for the V font on the inclined plane that forms each articular portion and its both sides.
And, when the inclined plane 51t that forms each articular portion and its both sides, 53t, also can with forms rigid element 50Q while moulding by resin material.At this moment, preferably be pre-formed groove or the recess that section shape is the V font at the mould of moulding rigid element 50Q.
In the direction of vibration converter section 50 of Fig. 8～shown in Figure 13; 2 opposed voice coil loudspeaker voice coil supports 40 are used an one part; Thereby can form the linkage of direction of vibration converter section 50, so when formation possesses the speaker unit of a pair of drive division, also can simply carry out assembly operation.And; Through motionless linking portion 53C is set; Opposed vibration (vibrate into a plurality of voice coil loudspeaker voice coil supports 40 and become rightabout situation) with respect to voice coil loudspeaker voice coil support 40; Even especially at framework 12 supporting articular portion 52D (R), (L), the position of this articular portion 52D (R), (L) is not held in necessarily yet, can simplify the assembling to the speaker unit of direction of vibration converter section according to this yet.
And; In the direction of vibration converter section 50 of Figure 11～shown in Figure 13; Form parallel rod as linkage by the 1st shaft portion 51A (L) and the 3rd shaft portion 51C (L) in the 1st shaft portion 51A (R) on right side and the 3rd shaft portion 51C (R), left side, so the 2nd linking portion 53B that is fastened on oscillating plate 10 is moved along Z-direction is stably parallel with respect to the opposed vibration of voice coil loudspeaker voice coil support 40.Thus, can apply stable vibration to plane oscillating plate 10.
According to this speaker unit 1,1A, 1B; If input audio signal SS; Then voice coil loudspeaker voice coil support 40 is along magnetization crack 20G vibration; The direction of vibration different directions that said magnetic gap edge and oscillating plate 10 are allowed forms, and the direction of this vibration is delivered to oscillating plate 10 through 50 conversions of direction of vibration converter section, and makes oscillating plate 10 vibrations and to the sound of sound equipment radiation direction SD radiation according to audio signal SS.
At this moment; The direction that makes magnetic gap 20G is intersected at the thickness direction of the direction of vibration of oscillating plate 10 and speaker unit 1,1A, 1B, so strengthen the size that the vibration of actuating force or the voice coil loudspeaker voice coil 30 of magnetic circuit 20 can directly not influence the thickness direction (Z-direction) of speaker unit 1,1A, 1B.Thus, when seeking big volumeization, can realize the slimming of speaker unit 1,1A, 1B.
And the direction of vibration that direction of vibration converter section 50 is changed voice coil loudspeaker voice coil support 40 through the mechanicalness linkage is passed to oscillating plate 10, so transfer of vibration efficient is high.Especially at Fig. 7～speaker unit 1A, 1B shown in Figure 8; In; The change of the angle of the 1st shaft portion 51A and the 2nd shaft portion 51B through voice coil loudspeaker voice coil support 40 vibration and carry out from the reaction force of stationary part 100, so can oscillating plate 10 be more positively passed in the vibration from voice coil loudspeaker voice coil support 40.Thus, can obtain the good regeneration efficiency of speaker unit 1A, 1B.
And; At Fig. 2, Fig. 7 and speaker unit 1,1A, 1B shown in Figure 8; In, through linking part 60 is set, can between the position of the end 50A of the position of the end 40A of voice coil loudspeaker voice coil 30 or voice coil loudspeaker voice coil support 40 and direction of vibration converter section 50, form ladder poor (at interval).Thus, can the width (highly) of the Z-direction of magnetic circuit 20 be contained in the height of direction of vibration converter section 50, guarantee fully to guarantee the height of required magnetic circuit 20 on the basis of actuating force, simultaneously can slimming speaker unit 1,1A, 1B.And,,, also can fully guarantee the necessary height (length of shaft portion 51) of direction of vibration converter section 50, and can establish the amplitude of oscillating plate 10 bigger even realize the slimming of speaker unit 1,1A, 1B through linking part 60 is set.
In addition, slide with the state that predetermined gap is set on the bottom of framework 12 12A or stationary part 100 through the bottom 61 that forms linking part 60, thus vibration that can stabilisation voice coil loudspeaker voice coil support 40.And, can carry out the moving of end of direction of vibration converter section 50 point-blank, and can be really and stabilisation be attached at end mobile of the direction of vibration converter section 50 of oscillating plate 10.
Direction of vibration converter section 50 shown in Figure 14 is the improvement example of mode shown in Figure 11.In the example shown in Figure 14 (a),, protuberance 510 is set and has improved rigidity with respect to the shaft portion that bends easily through the opposed vibration of voice coil loudspeaker voice coil support 40.In embodiment illustrated, at the 1st shaft portion 51A (R), (L), the 2nd shaft portion 51B (R), (L), linking portion 53D (R), (L), linking portion 53C are provided with protuberance 510 respectively.And, in the example shown in the figure (b), the lightweight that peristome 520 is sought the direction of vibration converter section is set in the shaft portion that does not need intensity especially.In the embodiment illustrated, be provided with peristome 520 at linking portion 53B.The lightweight of direction of vibration converter section is especially in the wide areaization of reproducing characteristic or strengthen effective aspect the amplitude of the sound wave of predetermined tone currents and the sound pressure level.
[magnetic circuit]
Figure 15 and Figure 16 are for representing the key diagram of the related speaker unit of execution mode of the present invention with magnetic circuit.As above-mentioned, magnetic circuit 20 possesses has magnetite 21 and pole piece (yoke portion) 22, and possesses through this magnetite 21 and pole piece 22 and be configured in a plurality of magnetic gap 20G1,20G2 (illustrated 30X is the center line of voice coil loudspeaker voice coil 30) on the direction of vibration of voice coil loudspeaker voice coil 30.
In this magnetic circuit 20; The 2nd magnetic pole strength 20Y that the magnetic pole strength of a side that in a plurality of magnetic gap 20G1,20G2, is separated by voice coil loudspeaker voice coil 30 possesses the 1st magnetic pole strength 20X that is made up of the magnetic that comprises magnetite 21 and is made up of in the tabular magnetic (yoke portion 22) of magnetite 21 magnetic engagement; Tabular magnetic (yoke portion 22) will form ladder difference shape with the composition surface and the 2nd magnetic pole strength 20Y of the magnetic (magnetite 21) that forms the 1st magnetic pole strength 20X, make the 1st magnetic pole strength 20X and the 2nd magnetic pole strength 20Y become roughly the same height.
Promptly; Shown in the figure (a) and (b); Tortuous state (also comprising crooked state) when being section and observing as the yoke portion 22 of tabular magnetic, possessing is magnetic is engaged in the flat part 22h1 of magnetite 21, from the rake 22t of flat part 22h1 to the 2 magnetic pole strength 20Y and be used to form the flat part 22h2 of the 2nd magnetic pole strength 20Y.The 1st magnetic pole strength 20X is formed on the magnetic that is configured in flat part 22h1, and promptly magnetite 21.
Shown in figure (a), the opposing party in the space that in a plurality of magnetic gap 20G1,20G2, is separated by voice coil loudspeaker voice coil 30 is formed with the 3rd magnetic pole strength 20X1 and the 4th magnetic pole strength 20Y1.The 3rd magnetic pole strength 20X1 arranged opposite is at the 1st magnetic pole strength 20X, and the 4th magnetic pole strength 20Y1 arranged opposite is at the 2nd magnetic pole strength 20Y.And, constitute the 3rd magnetic pole strength 20X1 by the magnetic that comprises magnetite 21, and constitute the 4th magnetic pole strength 20Y1 by tabular magnetic (yoke portion 22).
In the example shown in the figure (b), the opposing party in the space that in a plurality of magnetic gap 20G1,20G2, is separated by voice coil loudspeaker voice coil 30 is equipped with the plate yoke portion 22 of arranged opposite at the 1st magnetic pole strength 20X, the 2nd magnetic pole strength 22Y.
In such magnetic circuit 20, shown in figure (c), a plurality of magnetic gap 20G1,20G2 form mutual rightabout magnetic field along a direction of principal axis (for example Z-direction).The voice coil loudspeaker voice coil 30 that twines conductive component is configured in its magnetic gap 20G1,20G2 to intersect with its magnetic direction and to make electric current reverse flow in each magnetic gap 20G1,20G2.If tone currents flows into the conductive component of voice coil loudspeaker voice coil 30, the actuating force (Lorentz force, electromagnetic force) of the direction (for example X-direction) of then intersecting towards the magnetic direction of magnetic gap 20G1,20G2 and with electric current acts on voice coil loudspeaker voice coil 30, and voice coil loudspeaker voice coil 30 vibrates along its actuating force.
And; Magnetic density in the magnetic gap 20G2 that magnetic density in the magnetic gap 20G1 that is formed by the 1st magnetic pole strength 20X and the 3rd magnetic pole strength 20X1 is formed by the 2nd magnetic pole strength 20Y and the 4th magnetic pole strength 20Y1 relatively is bigger; At magnetic gap 20G1 side configuration direction of vibration converter section 50 and when linking end and the direction of vibration converter section 50 of voice coil loudspeaker voice coil 30, can make the actuating force of voice coil loudspeaker voice coil 30 become bigger thus.
The magnetic that magnetic circuit 20 will become magnetite 21 is configured to shown in Figure 15 (a) or Figure 15 (b), with this configuration status the magnetic that becomes magnetite 21 magnetized with the magnetic that becomes yoke portion 22.In the example of figure shown in (a), a pair of magnetite 21,21 is assemblied in after the magnetic circuit 20, can obtain through once magnetizing operation.Through reducing the magnetization number of times, can suppress dust etc. and get in the magnetic circuit 20, and can improve the reliability of speaker unit, and manufacturing process is oversimplified.
In addition, constitute the 1st magnetic pole strength 20X, 20X1 shown in Figure 15, but for example also can utilize the 1st magnetic pole strength 20X that is clipped between magnetite 21 and the flat part 22h1 or constitutes by the magnetic and the magnetite 21 of the magnetic gap 20G1 side that is arranged on magnetite 21 by magnetite 21.
Figure 16 is the key diagram (with figure (a) be plane graph, with figure (b) be X-X cutaway view) of the related speaker unit of expression execution mode of the present invention with other structure example of magnetic circuit.In this example, the structure that is used to form magnetic gap 20G1,20G2 is identical with the example of above-mentioned Figure 15, but possess as the yoke portion 22 of tabular magnetic a plurality of protuberance 22p is arranged.A plurality of protuberance 22p (the 1st protuberance 22p1,22p2) extend to mutual rightabout along the direction (for example Y direction) of direction of vibration (for example X-direction) intersection of relative voice coil loudspeaker voice coil.And 1 protuberance 22p (the 2nd protuberance 22p3) extends along the direction of vibration of voice coil loudspeaker voice coil 30.
These a plurality of protuberance 22p (22p1,22p2,22p3) are as the locking protrusion performance function that is used for magnetic circuit 20 is installed on stationary part 100.Through this jut 22p is set, can make gap in the magnetic gap 20G1,20G2 along the direction of vibration constant of voice coil loudspeaker voice coil 30.Therefore can improve the uniformity of the magnetic density in magnetic gap 20G1, the 20G2.
[embodiment/variation/lift-launch example]
Figure 17 is the plane graph of the related speaker unit of embodiments of the invention, and Figure 18 representes its rearview.Below in the explanation, utilize the example that speaker unit 1B shown in Figure 8 is made as basic structure, to parts shown in Figure 16 speaker unit as magnetic circuit 20 equipments is described.
In the example shown in Figure 17; The shape that oscillating plate 10 is observed from sound equipment radiation direction forms rectangle; Forming profile near the portion of centre therein is that ellipse and section shape are the bend 10A of concavity, on the direction of vibration of the direction of vibration of oscillating plate 10 and voice coil loudspeaker voice coil 30, has predetermined flexural rigidity thus.And through form the bend 10A of concavity at oscillating plate 10, the density among the bend 10A becomes greater than the density of the part of other oscillating plates 10, can also make rigidity become bigger.And, when 1 pair of direction of vibration converter section 50 arranged opposite, between the 1 couple of articular portion 52B that is formed between direction of vibration converter section 50 and the oscillating plate 10, be formed with bend 10A.
Because oscillating plate 10 has rigidity (comprising flexural rigidity) on the direction of vibration of oscillating plate 10; So can suppress to take place the deflection of oscillating plate 10 etc., and can be suppressed at and produce phase difference between the sound wave and by cutting apart the following degradation that vibrates the acoustic characteristic that causes.And, between a pair of articular portion 52B that is formed between oscillating plate 10 and the direction of vibration converter section direction of vibration converter section 50, can suppress to take place deflection through forming bend 10A at oscillating plate 10.
And oscillating plate 10 forms to be possessed along the minor axis of the direction of vibration of voice coil loudspeaker voice coil 30 with along the essentially rectangular of the major axis of the direction of the direction of vibration quadrature of voice coil loudspeaker voice coil 30 relatively, also can form rib along the direction of major axis or minor axis.Rib is the slot part of V word shape or other shapes for for example section shape, and the surface or the inside of oscillating plate 10 form linearity, ring-type, grid-like relatively, can in this slot part, apply (giving) for example scavenger packing materials such as (vibration damping agent, brake materials).Thus, through filling up slot part, can improve the rigidity (comprising flexural rigidity) of oscillating plate 10, and can reduce the peak valley of loud speaker sound pressure frequency characteristic with packing material.And,, for example also can attach the illustrated fiber component of omission that constitutes by nonwoven fabrics etc., thereby replace forming slot part as other examples of rib.Thus,, can improve the rigidity (flexural rigidity) of oscillating plate 10 through rib 10B is made as fiber component, and can be suppressed at oscillating plate 10 vibration the time because of the vibration of propagating or air drag from the direction of vibration converter section in distortion such as oscillating plate 10 generation deflections.In addition, through rib 10B being set, the internal losses that can improve oscillating plate 10.
And oscillating plate 10 is formed by layers 1 and 2, and becomes with a pair of the 2nd layer of stepped construction of clamping the 1st layer, and said the 1st layer is made up of the Foamex that comprises propylene resin etc., and said the 2nd layer is made up of fiber components such as glass fibers.In addition, as the formation material of oscillating plate 10, for example can adopt resinous material, metal species material, paper-like materials, fiber-like material, ceramic-like materials, composite material etc.
The edge 11 that oscillating plate 10 vibrations are bearing on the framework 12 that becomes stationary part 100 freely is configured between oscillating plate 10 and the framework 12 as stationary part 100; When perimembranous supports the peripheral part of oscillating plate 10 in it; Peripheral part directly or through miscellaneous part is engaged on the framework 12, thus oscillating plate 10 is remained on assigned position.As miscellaneous part, can enumerate and possess as the elastomeric element (comprising resin component) of the function of liner or bonding with resin etc.In detail, when edge 11 supports oscillating plate 10 freely along direction of vibration (Z-direction) vibration, to direction (Y direction) braking of direction of vibration quadrature.Edge 11 forms from what sound equipment radiation direction was observed and is shaped as annular shape (ring-type), and its section shape is the regulation shape, for example on sound equipment radiation direction, forms concave shape, convex form, wave mode shape etc.As the formation material at edge 11, for example can adopt skin, cloth, rubber, resin and to these material known such as parts that impose the filler material processed and rubber or resin etc. is shaped to the regulation shape.And also 11 local or full week formation improves the rigidity of edge 11 on prescribed direction towards outstanding jut and the concave shape of surperficial (face of sound equipment radiation side) or the inside (face of the opposition side of sound equipment radiation side) on the edge of.
Stationary part 100 possesses the periphery frame portion 101 that surrounds oscillating plate 10 and at the bridge part 102 of the inboard bridge joint of periphery frame portion 101; 102 couples of above-mentioned linkage 50L of bridge part (direction of vibration converter section 50) provide reaction force, and on the direction of vibration of linkage 50L, possess rigidity.
If voice coil loudspeaker voice coil 30 vibration as above-mentioned, then its vibration is passed to oscillating plate 10 through linkage 50L, but the linkage 50L acceptance of angle of changing shaft portion 51 at this moment is from the reaction force of oscillating plate 10.When linkage 50L accepted this reaction force, stationary part 100 deflections of the 50L of bearing connecting rod mechanism then can cause linkage 50L vibration itself, and linkage 50L transmits useless vibration to shaft portion 51.If be passed to useless vibration transfer to the oscillating plate 10 of shaft portion 51, then the vibration of voice coil loudspeaker voice coil 30 can't be passed to oscillating plate 10 effectively.Therefore, produce the function of deflections through giving the bridge part 102 that is suppressed at the 50L of bearing connecting rod mechanism, thereby can suppress useless vibration transfer to shaft portion and oscillating plate 10 as the part of stationary part 100.Thus, the vibration of voice coil loudspeaker voice coil 30 is passed to oscillating plate 10 effectively.
Stationary part 100 possesses the 1st component parts is arranged (the 1st framework) 100A and the 2nd component parts (the 2nd framework) 100B.The 1st component parts 100A is the support unit of the sound equipment radiation side of speaker unit 1B, and the 2nd component parts 100B is the support unit of opposite (back side) side of sound equipment radiation side.Drive division 14 supportings of speaker unit 1 are that the 1st component parts 100A and the 2nd component parts 100B sandwich.
The 1st component parts 100A possesses the periphery frame portion 101 of the ring-type of forming, through the periphery of edge 11 supporting oscillating plates 10, and a side (22B) of the pole piece (yoke portion) 22 of supporting magnetic circuit 20.On the other hand, the 2nd component parts 100B possesses periphery frame portion 101 and bridge part 102 is arranged, a side (22A) of the pole piece (yoke portion) 22 of supporting magnetic circuit 20, and bridge part 102 50L of bearing connecting rod mechanism.At this moment, bridge part 102 has rigidity with respect to the power of accepting from oscillating plate 10 through linkage 50L.Preferred for this reason on the direction of vibration of oscillating plate 10, the compliance of the relative periphery frame of the compliance of bridge part 102 portion 101 is practically identical or littler than it.More specifically, in fact the thickness with the part of the stationary part 100 of supporting oscillating plate 10 or magnetic circuit 20 is identical or bigger than it for the thickness in the preferred bridge part 102.
(Figure 19 (a) is the plane oblique view of the 1st component parts 100A for the oblique view of the individual construction of expression the 1st component parts 100A and the 2nd component parts 100B for Figure 19 and Figure 20; With figure (b) is the backsight oblique view of these parts, and Figure 20 (a) is the plane oblique view of the 2nd component parts 100B, figure (b) is the backsight oblique view of these parts together.)。The 1st component parts 100A as the 1st periphery frame 101A of portion, and possesses the 2nd periphery frame 101B of portion of supporting oscillating plate 10 with the periphery frame portion 101 in the stationary part 100 in the inboard of the 1st periphery frame 101A of portion.The edge of opening 11 of the inboard of the 2nd peripheral part 101B stops up with oscillating plate 10.
Be formed with towards the direction of its extension and the 1st outstanding protuberance 102A of direction of vibration of oscillating plate 10 at the bridge part that is arranged on the 2nd component parts 100B 102.The 1st protuberance 102A is the rib structure along the long side direction formation of bridge part 102, improves the flexural rigidity of bridge part 102 thus.And, with the face of oscillating plate 10 opposed bridge parts 102 in be formed with the 2nd protuberance 102B that extends to the direction of intersecting with the 1st protuberance 102A.The 2nd protuberance 102B becomes the ribs at the both ends of bridge part 102, at its two ends with bridge part 102 non-yielding props in periphery frame portion 101.
In addition; In bridge part 102; In the 3rd protuberance 102C that the direction that relative the 1st protuberance 102A and the 2nd protuberance 102B intersect is extended was formed at the face with oscillating plate 10 opposed stationary part 100, forming flat shape by a plurality of the 2nd protuberance 102B and the 3rd protuberance 102C was polygon-shaped rib 103.
The 1st component parts 100A and the 2nd component parts 100B that become stationary part 100 have and possess major axis O 1With minor axis O 2Flat shape, bridge part 102 is along minor axis O 2Direction forms.And, can also be along major axis O 1Direction forms perhaps along major axis O 1Direction and minor axis O 2Direction forms bridge part 102.
Quadrangle at the 1st component parts 100A becomes protuberance 100m, and becomes recess 100n at the quadrangle of the 2nd component parts 100B, and protuberance 100m and recess 100n tabling and the 1st component parts 100A and the 2nd component parts 100B combine.The side that protuberance 100m is formed at the 1st component parts 100A and the 2nd component parts 100B gets final product, and the opposing party that recess 100n is formed at the 1st component parts 100A and the 2nd component parts 100B gets final product.Recess 100n also can be used as hole portion and forms.
Be formed with jut 101B1 at the 2nd periphery frame 101B of portion towards sound equipment radiation direction projection through edge 11 supporting oscillating plates 10.Obtain to be used to support the rigidity on every side of oscillating plate 10 through this jut 101B1.
The yoke portion 22 that the 1st component parts 100A and the 2nd component parts 100B supporting magnetic circuit 20 are possessed.The concavity that the 1st component parts 100A and the 2nd component parts 100B possess the part that holds yoke portion 22 bears portion 105.Bear portion 105 at this and embed above-mentioned protuberance 22p, yoke portion 22 is positioned in order to form suitable magnetic gap.
Be formed with guiding in the side of the 1st component parts 100A and be used for from the outside guide portion 106 to the distribution 82 of voice coil loudspeaker voice coil 360 input audio signals.And, between the periphery frame portion 101 of the 2nd component parts 100B and bridge part 102, be formed with peristome 101S.Be formed with the 4th jut 102D in these periphery frame portion 101 outer peripheral edges along peristome 101S.The 4th jut 102D improves the torsion rigidity of periphery frame portion 101.
In addition, be formed with the excessive vibration inhibition portion 108 of the excessive vibration that is used to suppress voice coil loudspeaker voice coil 30 at the 1st component parts 100A or the 2nd component parts 100B.Excessive vibration inhibition portion 108 is outstanding in the movable area of voice coil loudspeaker voice coil 30, contacts the excessive vibration that suppresses voice coil loudspeaker voice coil 30 therewith through voice coil loudspeaker voice coil support 40.On the matrix of voice coil loudspeaker voice coil support 40, be formed with notch 41f, in this notch 41f, dispose the protuberance of excessive vibration inhibition portion 108.
Figure 21 is illustrated in the plane graph that the 1st component parts 100A goes up the state of assembling drive division.In addition, in Figure 21, omit the 2nd component parts 100B.Be equipped with 20,1 pair of voice coil loudspeaker voice coil 30 of 1 pair of magnetic circuit (voice coil loudspeaker voice coil support 40) and direction of vibration converter section 50 (linkage 50L) on the 1st component parts 100A at oscillating plate 10 and edge 11 being equipped with.
Magnetic circuit 20 is installed on the 1st component parts 100A with the state that the pole piece 22 of the side that is illustrated by the broken lines engages magnetites.Pole piece 22 possesses a plurality of protuberance 22p is arranged, and this protuberance 22p is supported on the portion of bearing 105 that above-mentioned section is a concavity., diminish up to stationary part 100 from direction of vibration converter section 50, thus, suppress maintaining part 15 and contact with yoke portion 22 as yoke portion 22 its width of tabular magnetic.
Voice coil loudspeaker voice coil 30 flexibly remains in stationary part 100 through maintaining part 15.Maintaining part 15 suppresses to move to other directions to the vibration of direction of principal axis restriction voice coil loudspeaker voice coil 30.Voice coil loudspeaker voice coil 30 is supported on voice coil loudspeaker voice coil support 40 and remains in installation unit 16 through maintaining part 15.Through this installation unit 16 is installed on the 1st component parts 100A, the installation of voice coil loudspeaker voice coil 30 and location are oversimplified.
Direction of vibration converter section 50 possesses the 1st shaft portion 51A and the 2nd shaft portion 51B as linkage 50L, and the end bearing of the 2nd shaft portion 51B is in the 1st shaft portion 51A, and the other end is supported on bridge part 102.The bridge part 102 that supports the 2nd shaft portion 51B forms plate shaped, and the linking part 104 that the other end of the 2nd shaft portion 51B and bridge part 102 link forms a plane.
The other end of the 2nd shaft portion 51B and bridge part 102 are chimeric, and direction of vibration converter section 50 links with bridge part 102 thus.Linking part 104 at bridge part 102 is formed with jut 104A, and the linking portion 53C in the end that is integrally formed in the 2nd shaft portion 51B through articular portion 52 is formed with the 104B of hole portion that inserts jut 104A.
The jut 104A of the linking part 104 in the bridge part 102 becomes the location division 102E of the position of decision direction of vibration converter section 50 relative stationary part 100.In the 104B of hole portion that the linking portion 53C of the end that is integrally formed in the 2nd shaft portion 51B through articular portion 52 is had, insert jut 104A, stationary part 100 is located direction of vibration converter sections 50 relatively thus.
Figure 22 and Figure 23 are the key diagrams of expression embodiments of the invention.Figure 22 is the partial sectional view of above-mentioned speaker unit 1B.Figure 23 is the oblique view of the state of main expression the 1st component parts 100A, oscillating plate 10 and the edge 4J that do not comprise speaker unit 1B.Omit part explanation with the common additional same-sign of part of above-mentioned explanation.
Under the 1st component parts 100A and state that the 2nd component parts 100B combines; The 2nd linking portion 53B that links direction of vibration converter section 50 at the back side of the oscillating plate that is supported on the 1st component parts 100A 10 links the motionless linking portion 53C of direction of vibration converter sections 50 at the linking part 104 of the middle body of the bridge part that is formed at the 2nd component parts 100B 102.
The 2nd linking portion 53B is the part through the integrated end in the 1st shaft portion 51A of articular portion 52B, links with oscillating plate 10 through the 2nd linking portion 53B, thus the end of the 1st shaft portion 51A and oscillating plate 10 bindings.In addition, the face that radiates side at the sound equipment with the opposed oscillating plate 10 of the 2nd linking portion 53B is formed with recess, and oscillating plate 10 possesses rigidity.
Motionless linking portion 53C is the part through the integrated end in the 2nd shaft portion 51B of articular portion 52D; Form porose 104B at this linking portion 53C; At the jut 104A of the 104B of this hole portion insertion linking part 104, thereby the end of linking part 104 and the 2nd shaft portion 51B links.
The voice coil loudspeaker voice coil support 40 of supporting voice coil loudspeaker voice coil 30 links through linking part 60 with direction of vibration converter section 50.Linking part 60 is mounted to along the width of voice coil loudspeaker voice coil support 40 and extends.The 1st linking portion 53A that is formed with direction of vibration converter section 50 at linking part 60 loads and unloads the 60s of linkage section portion that connects freely, and is formed with the through hole 60p that runs through along the direction of vibration of voice coil loudspeaker voice coil support 40.Through hole 60p reduces the air vent hole that acts on the air drag of linking part 60 and form for the vibration with respect to voice coil loudspeaker voice coil support 40.These linking part 60 devices spaced apart link the 1st linking portion 53A of direction of vibration converter section 50 and the end of voice coil loudspeaker voice coil support 40, and the height of magnetic circuit 20 is controlled in the height of direction of vibration converter section 50.
Voice coil loudspeaker voice coil support 40 and linking part 60 remain in stationary part 100 through maintaining part 15.Maintaining part 15 possesses the 1st maintaining part 15A and the 2nd maintaining part 15B that constitutes to the curved plate shap part of other directions distortion along the direction distortion of the direction of vibration of voice coil loudspeaker voice coil support 40 and regulation by allowing.The 1st maintaining part 15A and the 2nd maintaining part 15B remain in the 1st component parts 100A and the 2nd component parts 100B through installation unit 16 with voice coil loudspeaker voice coil support 40.The 1st maintaining part 15A remains in linking part 60 sidepiece of installation unit 16; The end of the inboard of the 1st maintaining part 15A about being separately positioned on is connected in the end in two outsides of linking part 60, and the end in the outside of each the 1st maintaining part 15A is connected to installation unit 16.And the 1st maintaining part 15A is formed by conductive metal, and is electrically connected with the lead-out wire of drawing from the end of voice coil loudspeaker voice coil 30, makes audio signal be supplied to voice coil loudspeaker voice coil 30 through the 1st maintaining part 15A.And the 1st maintaining part 15A is electrically connected with the splicing ear portion 81,81 of the linearity that is supported on the 2nd component parts 100B, and distribution through being electrically connected on these splicing ear portions 81,81 respectively 82,82 is connected with external electric.
The 2nd its central portion of maintaining part 15B is connected in the other side of installation unit 16, its two ends be connected in voice coil loudspeaker voice coil support 40 about the end.At this, the 2nd maintaining part 15B is configured in the width of voice coil loudspeaker voice coil support 40, the maintaining body of voice coil loudspeaker voice coil support 40 can not increased to the Width of voice coil loudspeaker voice coil support 40.And the 2nd maintaining part 15B is formed by link, therefore also has continuous shape at middle body, but can be formed by a plurality of parts, not special the qualification.In addition, it is outstanding laterally from stationary part 100 that the local configuration of the 2nd maintaining part 15B becomes, but be not limited to this, the also variable inside that more is contained in stationary part 100.
For to voice coil loudspeaker voice coil 30,30 input audio signals corresponding with a plurality of drive division 14; Extend towards the opposing party's voice coil loudspeaker voice coil 30 from a side's of a plurality of voice coil loudspeaker voice coils 30,30 voice coil loudspeaker voice coil 30, and be provided with the common portion of terminal 81,81 of a pair of a plurality of relatively voice coil loudspeaker voice coil 30,30 in stationary part 100.And; With regard to portion of terminal 81, with regard to 81, be formed at the 1st framework 12B (1st component parts 100A) of formation as the framework 12 of stationary part 100 and the internal configurations portion of terminal 81,81 of the illustrated peristome of omission between the 2nd framework 12C (the 2nd component parts 100B).Therefore, and compare with the situation that the other end is provided with portion of terminal at an end of each voice coil loudspeaker voice coil 30 respectively, make the configuration of portion of terminal more can save spatialization, and realize the miniaturization or the slimming of speaker unit.And, can portion of terminal 81,81 stably be fixed on stationary part 100, and can avoid the bad connection with voice coil loudspeaker voice coil 30,30.And portion of terminal 81,81 forms the major axis that has from a side voice coil loudspeaker voice coil 30 along the opposing party's voice coil loudspeaker voice coil 30 and the shape of the minor axis that intersects with this major axis.Like this, can improve the efficient that the space is set through being made as elongated shape.
Form and the connecting portion 81a that is electrically connected on outside distribution 82,82 in portion of terminal 81,81, portion of terminal 81,81 is electrically connected with distribution 82 connecting portion 81a.And distribution 82 is fixed in the side of stationary part 100, and the periphery frame portion 101 of stationary part 100 possesses the side that distribution 82 is installed, and is formed with the guide portion 106,106 of guiding distribution 82 in the side of stationary part 100.
On the other hand, on the voice coil loudspeaker voice coil support 40 (matrix) of supporting voice coil loudspeaker voice coil 30, be formed with the conductive layer (voice coil loudspeaker voice coil lead-out wire) 32 that is connected in the lead-out wire 31 that constitutes by conductive component.Conductive layer (voice coil loudspeaker voice coil lead-out wire) 32 pattern are formed on the voice coil loudspeaker voice coil support 40 (matrix), so that surround the conductive component of voice coil loudspeaker voice coil 30, conductive layer (voice coil loudspeaker voice coil lead-out wire) 32 is electrically connected the conductive component and the maintaining part 15 of voice coil loudspeaker voice coil 30 through voice coil loudspeaker voice coil lead-out wire 31.
Be formed with the distribution that is electrically connected voice coil loudspeaker voice coil 30 and portion of terminal 81 in maintaining part 15; Conductive layer (voice coil loudspeaker voice coil lead-out wire) 32 is connected with the wired electric of maintaining part 15; Maintaining part 15 is electrically connected with the end of portion of terminal 81,81; Distribution 82 is connected on the portion of terminal 81,81, and audio signal is input to voice coil loudspeaker voice coil 30 from the outside thus.
Be formed with the connecting portion F1 that is connected with portion of terminal 81,81 in maintaining part 15.This connecting portion F1 forms plate shaped, so that the direction of intersecting to the direction of vibration (Z-direction) with oscillating plate 10 is extended and is connected to portion of terminal 81,81.And, also be formed with the illustrated connecting portion of the omission that is connected with voice coil loudspeaker voice coil lead-out wire 43 in maintaining part 15, and form plate shaped so that the end of voice coil loudspeaker voice coil lead-out wire 43 is extended and be connected to the direction of intersecting to the direction of vibration (Z-direction) with oscillating plate 10.
In the installation unit 16; The 1st connecting portion 16a that connects the end of the 1st maintaining part 15A is arranged on the left and right sides of linking part 60; The 2nd connecting portion 16b that connects the 2nd maintaining part 15B is arranged on the rear of voice coil loudspeaker voice coil support 40, has the one support 16c that supports the 1st connecting portion 16a and the 2nd connecting portion 16b integratedly.And the 16d of connecting hole portion of the protuberance 100m that the 1st component parts 100A of insertion stationary part 100 is possessed is arranged on four jiaos of installation unit 16, and stationary part 100 is fixed on preposition relatively.
The 22A of yoke portion of magnetic circuit 20,22B are installed on the 1st component parts 100A, the 2nd component parts 100B.And the 1st component parts 100A combines with the 2nd component parts 100B, is formed between the 22A of yoke portion, the 22B thus or the gap between the magnetite 21 becomes magnetic gap.
According to this embodiment, the height of magnetic circuit 20 almost becomes the whole height overall of device, and is near the structure that voice coil loudspeaker voice coil support 40 vibrates the center of its magnetic circuit 20.And the end of the end of voice coil loudspeaker voice coil support 40 and direction of vibration converter section 50 is connected with different height through linking part 60, and each shaft portion of direction of vibration converter section 50 can be guaranteed sufficient length in height of devices thus.And can the part of the height of magnetic circuit 20 be controlled in the height of direction of vibration converter section 50.
Figure 24 is the figure of the variation of the related speaker unit of expression embodiments of the invention.Omit repeat specification with the common part additional phase prosign of above-mentioned explanation.In this variation, be the range upon range of structure of the yoke portion that forms by tabular magnetic 22.At the 1st component parts 100A the side bearing 22A of yoke portion, the 22A1 that constitute by 2 range upon range of magnetics of supporting oscillating plate 10, the 22B of yoke portion, the 22B1 that constitute by 2 range upon range of magnetics at the 2nd component parts 100B side bearing.The magnetic gap of magnetic circuit 20 is formed near between magnetite 21, the 22A of yoke portion, 22B between 21.And, in the embodiment illustrated, be formed with the outstanding protuberance 22p (being equivalent to the 1st protuberance 22p1,22p2) of direction that intersects to direction of vibration at the 22A of yoke portion, 22A1,22B, 22B1 with respect to voice coil loudspeaker voice coil 30.This protuberance 22p forms section portion in the yoke portion 22 opposed sides with stationary part 100, at the supporting protuberance 22p of this section portion, and is formed with magnetic gap.And, also can form along the 2nd outstanding protuberance 22p3 of the direction of vibration of voice coil loudspeaker voice coil 30 not special the qualification in yoke portion 22.
Figure 25 is the figure of other variation of the related speaker unit of expression embodiments of the invention.Omit repeat specification with the common additional same-sign of part of above-mentioned explanation.In this variation, at first magnetite 21 is configured in the sidepiece of magnetic gap and in the thickness of magnetite 21, forms magnetic gap, take into account the slimming and the thickness of guaranteeing magnetite 21 of magnetic circuit 20 thus.Arrow is represented the direction of the magnetic pole of magnetite 21.And, in the embodiment illustrated, separately form magnetic circuit by voice coil loudspeaker voice coil 30 pairing straight line portioies.That is, seize magnetite 21,21 on both sides by the arms in the both sides of 1 couple of 22Aa of yoke portion that clips magnetic gap and the 22Ba of yoke portion, the parallel therewith both sides at 1 couple of 22Ab of yoke portion that clips magnetic gap and the 22Bb of yoke portion are seized magnetite 21,21 on both sides by the arms.Magnetic gap is formed on between the outstanding protuberance 22a of yoke portion, the 22b.In the embodiment illustrated, arrange 2 magnetic circuits to X-direction, but can also form this 2 magnetic circuits.
Figure 26 is the key diagram of the binding of explanation maintaining part 15 and installation unit 16.The 2nd maintaining part 15B of part and installation unit 16 link with resin through bonding as a whole.The flat part F of the right ends of the 2nd maintaining part 15B, F are linked to connecting portion 40g, the 40g of the right ends of end limit 40f1 respectively through binding part 40g1, the 40g1 with hole 40g2, and the flat part F of the central authorities of the 2nd maintaining part 15B is linked to the binding end 16f1 of installation unit 16.
In addition; The end limit 40f1 that the direction of vibration converter section side of relative voice coil loudspeaker voice coil support 40 is in the voice coil loudspeaker voice coil support 40 of opposition side forms concavity in voice coil loudspeaker voice coil 30 sides, and voice coil loudspeaker voice coil support 40 forms and can suppress the flat shape that voice coil loudspeaker voice coil support 40 vibrates and contacts with installation unit 16 because of the vibration of voice coil loudspeaker voice coil 30.Particularly; Between the end limit 40f1 of the binding end 16f1 of installation unit 16 and voice coil loudspeaker voice coil support 40, form bigger gap, and become along with to the par F side shifting of the right ends of the 2nd maintaining part 15B and towards the outstanding flat shape of the 2nd maintaining part 15B.In addition, be formed with the hole portion of connecting portion 40g of the right ends of the opposing party's side 40f1 that inserts voice coil loudspeaker voice coil support 40 at the par F of the right ends of the 2nd maintaining part 15B.
Figure 27 is the enlarged drawing of the electric connection structure of expression maintaining part.The joint face F2 that is shown specifically the side of the 1st maintaining part 15A with figure (a) is connected in the position of the splicing ear portion 42 of voice coil loudspeaker voice coil lead-out wire 32 (conductive layer).The joint face F1 that is shown specifically the opposing party of the 1st maintaining part 15A with figure (b) is connected in the position of portion of terminal 81.
Among the 1st maintaining part 15A, a distolateral joint face F1 is connected in portion of terminal 81, and another distolateral joint face F2 is connected in the splicing ear 42 of voice coil loudspeaker voice coil lead-out wire 32.Portion of terminal 81 is electrically connected the distolateral and distribution 82 (outside) of a pair of the 1st maintaining part 15A, and the audio signal of importing from distribution 82 is supplied to voice coil loudspeaker voice coil lead-out wire 32 through portion of terminal 81 and the 1st maintaining part 15A.Portion of terminal 81 is bar-shaped electroconductive component, is formed with location hole, is positioned at the privileged site in the stationary part 100 through making the locator protrusions 111 that is arranged on stationary part 100 be inserted in this location hole.In addition, the part of portion of terminal 81 is imposed insulation processing, expose, can be electrically connected with the 1st maintaining part 15A with the surface of electroconductive component in the zone that the joint face F1 of the 1st maintaining part 15A is connected.And, also can constitute portion of terminal 81, and electroconductive component is set on this insulating element by the parts (insulating element) that resin component etc. possesses insulating properties, thus with the joint face F of maintaining part 15 1Be electrically connected.
As more than, the related speaker unit 1 of execution mode of the present invention can be realized slimming, and can also realize big volumeization.This speaker unit can be used as various electronic equipments or vehicle mounted effectively.Figure 28 is the key diagram that expression possesses the electronic equipment of the related speaker unit of execution mode of the present invention.As scheming mobile phone shown in (a) or the electronic equipment the portable terminal device 2 together or scheming together in the such electronic equipment 3 of the flat-panel monitor shown in (b); Even in the basket that electronic equipment 3 is possessed, hold speaker unit 1 or speaker unit 1 be installed in the basket side as installing component of electronic equipment as installing component; Also can dwindle the required thickness space of being provided with of speaker unit 1, therefore can realize the slimming that electronic equipment is whole.In addition, in the electronic equipment of slimming, also can access sufficient audio frequency output.Figure 29 is the key diagram that expression possesses the automobile of the related loud speaker of execution mode of the present invention.Can realize the expansion of interior space through the slimming of speaker unit 1 with the automobile 4 shown in the figure.Especially at door-plate or ceiling the related speaker unit of execution mode of the present invention 1 is installed, also can door-plate outstanding be made as lessly, and can enlarge driver's operating space or enlarge the interior space as installing component.And, because of obtaining the output of sufficient audio frequency, thus noise more run at high speed the time etc., also can enjoy music or broadcast receiver broadcasting cosily in car.
And; As the building that possesses speaker unit 1; Be in inhabitation that the dwelling house (building) of purposes can hold maybe that most personnel hold a meeting, in (buildings) such as hotel, hotel or advanced study and training facilities of lecture, party etc., when speaker unit 1 being set, can dwindle that the required thickness space of speaker unit 1 being set as the wall of installing component or ceiling with the people; So can remove indoor unwanted space, and can effectively apply flexibly the space.And; In recent years, along with popularizing of projector or big frame TV etc., the example that the room that possesses sound equipment/image documentation equipment is set day by day more to be seen; On the other hand, the room that possesses sound equipment/image documentation equipment is not set and instance that living room etc. is used as home theater also more sees.In this instance,, can make front yard movie theatreization simply such as living room man, and then can further apply flexibly the space in the living room effectively through using speaker unit 1.In addition, (installing components) such as ceiling or walls in the room for example can be enumerated in the configuration place of speaker unit 1.
More than, with reference to accompanying drawing execution mode of the present invention is described in detail, but concrete structure being not limited to these execution modes, design alteration that the scope that does not break away from aim of the present invention is arranged etc. also is contained among the present invention.And each above-mentioned execution mode just can flow with mutual technology as long as on its purpose and structure etc., do not have special contradiction or problem.In addition; In this application, 2008 January 28 international application PCT/JP2008/051197, October in 2008 international application on the 14th PCT/JP2008/068580, October in 2008 international application on the 27th PCT/JP2008/069480, October in 2008 international application on the 23rd PCT/JP2008/069269, February in 2009 international application on the 27th PCT/JP2009/053752, February in 2009 international application on the 26th PCT/JP2009/053592, January in 2009 international application on the 20th PCT/JP2009/050764, the PCT/JP2009/055533 of 03 month international application on the 19th in 2009, March in 2009 international application on the 19th PCT/JP2009/055496, March in 2009 international application on the 19th PCT/JP2009/055497, March in 2009 international application on the 19th PCT/JP2009/055498, March in 2009 international application on the 19th PCT/JP2009/055534, March in 2009 international application on the 19th PCT/JP2009/055523, March in 2009 international application on the 19th PCT/JP2009/055524, March in 2009 international application on the 19th PCT/JP2009/055525, March in 2009 international application on the 19th PCT/JP2009/055526, March in 2009 international application on the 19th PCT/JP2009/055527, March in 2009 international application on the 19th PCT/JP2009/055528 in the full content put down in writing enroll among the application.

Claims (33)

1. a speaker unit is used magnetic circuit, and it is used for the vibration of plane voice coil loudspeaker voice coil is passed to the speaker unit of oscillating plate through the direction of vibration converter section of rigidity, makes said voice coil loudspeaker voice coil plane earth vibration, it is characterized in that,
Possess a plurality of magnetic gaps on the direction of vibration that is configured in said voice coil loudspeaker voice coil,
The 2nd magnetic pole strength that the magnetic pole strength of a side that in these a plurality of magnetic gaps, is separated by said voice coil loudspeaker voice coil possesses the 1st magnetic pole strength that is made up of the magnetic that comprises magnetite and is made up of in the tabular magnetic of said magnetite magnetic engagement,
Said tabular magnetic will form ladder difference shape with the composition surface and said the 2nd magnetic pole strength of the said magnetic that forms said the 1st magnetic pole strength, make said the 1st magnetic pole strength and said the 2nd magnetic pole strength become roughly the same height.
2. speaker unit as claimed in claim 1 is used magnetic circuit, it is characterized in that,
Said tabular magnetic possesses magnetic engagement in the flat part of said magnetite with from the rake of said flat part to said the 2nd magnetic pole strength.
3. speaker unit as claimed in claim 2 is used magnetic circuit, it is characterized in that,
Constitute the magnetic of said the 1st magnetic pole strength in said plate-like portion configuration.
4. speaker unit as claimed in claim 3 is used magnetic circuit, it is characterized in that,
The opposing party in the space that is separated by said voice coil loudspeaker voice coil is formed with the 3rd magnetic pole strength and the 4th magnetic pole strength.
5. speaker unit as claimed in claim 4 is used magnetic circuit, it is characterized in that,
At said the 3rd magnetic pole strength of said the 1st magnetic pole strength arranged opposite,
At said the 4th magnetic pole strength of said the 2nd magnetic pole strength arranged opposite,
Said the 3rd magnetic pole strength is made up of the magnetic that comprises said magnetite, and said the 4th magnetic pole strength is made up of said tabular magnetic.
6. speaker unit as claimed in claim 5 is used magnetic circuit, it is characterized in that,
Magnetic density in the magnetic gap that magnetic density in the magnetic gap that is formed by said the 1st magnetic pole strength and said the 3rd magnetic pole strength is formed by said the 2nd magnetic pole strength and said the 4th magnetic pole strength relatively is bigger.
7. a speaker unit is characterized in that,
Possess the described speaker unit of claim 1 with magnetic circuit as drive division; Possess oscillating plate and support the stationary part of this oscillating plate along direction of vibration vibration freely; Provide the said drive division of vibration to be supported on said stationary part through audio signal to said oscillating plate, and possess the voice coil loudspeaker voice coil of the magnetic circuit, the said audio signal of input and the edge that the form magnetic gap direction vibration different with the direction of vibration of said oscillating plate and change said voice coil loudspeaker voice coil vibration direction and be passed to the said direction of vibration converter section of said oscillating plate.
8. speaker unit as claimed in claim 7 is characterized in that,
Said stationary part possesses surrounds periphery frame portion and the bottom surface sections of said speaker unit with magnetic circuit,
Said speaker unit possesses the protuberance that extends towards the periphery frame portion of said stationary part with the said tabular magnetic that magnetic circuit had,
Said speaker unit is supported on said stationary part with magnetic circuit through said protuberance.
9. speaker unit as claimed in claim 8 is characterized in that,
A plurality of said protuberances extend along the direction of the direction of vibration intersection of said relatively voice coil loudspeaker voice coil each other in the opposite direction.
10. speaker unit as claimed in claim 8 is characterized in that,
A plurality of said protuberances possess the 1st protuberance that direction that the direction of vibration of the said relatively voice coil loudspeaker voice coil in a plurality of edges intersects is extended, and,
Possesses the 2nd protuberance that extends along the direction of vibration of said voice coil loudspeaker voice coil.
11. speaker unit as claimed in claim 8 is characterized in that,
Be formed with the portion of bearing of the said jut of supporting in said stationary part.
12. speaker unit as claimed in claim 11 is characterized in that,
The overhang bracket of said protuberance is in the portion of bearing of said stationary part.
13. speaker unit as claimed in claim 12 is characterized in that,
The said section that bears portion forms concavity.
14. speaker unit as claimed in claim 13 is characterized in that,
Said stationary part is formed by a plurality of component parts,
Each constitutes the said tabular magnetic of said the 2nd magnetic pole strength and said the 4th magnetic pole strength said a plurality of component parts supporting.
15. speaker unit as claimed in claim 14 is characterized in that,
From said direction of vibration converter section up to the opposed said stationary part of this direction of vibration converter section, said its width of tabular magnetic diminishes.
16. speaker unit as claimed in claim 15 is characterized in that,
Said the 2nd magnetic pole strength and said the 4th magnetic pole strength are made up of a plurality of said tabular magnetics.
17. speaker unit as claimed in claim 15 is characterized in that,
A plurality of said speaker units clip the direction alignment arrangements of said vibrating body along said voice coil loudspeaker voice coil vibration with magnetic circuit.
18. speaker unit as claimed in claim 7 is characterized in that,
One end of said direction of vibration converter section directly or through the change of miscellaneous part angle is linked to said voice coil loudspeaker voice coil freely, and the other end is direct or be linked to said oscillating plate freely through the change of miscellaneous part angle,
The shaft portion that possesses the rigidity that the direction of vibration of direction of vibration and the said voice coil loudspeaker voice coil of said relatively oscillating plate respectively tiltedly establishes.
19. speaker unit as claimed in claim 7 is characterized in that,
Said direction of vibration converter section possesses makes the shaft portion that is formed between said voice coil loudspeaker voice coil support and the said oscillating plate carry out the linkage of angular transition.
20. speaker unit as claimed in claim 7 is characterized in that,
Possess linking part, said linking part leans on the end of said voice coil loudspeaker voice coil side to link along said direction of vibration with leaning on of said voice coil loudspeaker voice coil makes both ends between the end of said direction of vibration converter section side position in said direction of vibration converter section differently.
21. speaker unit as claimed in claim 7 is characterized in that,
Said direction of vibration converter section links with the installing component that comprises said oscillating plate and said voice coil loudspeaker voice coil, and possesses the articular portion near this installing component,
Be formed with the contact avoidance portion that contacts with said articular portion of avoiding in face side near the said installing component of said articular portion.
22. speaker unit as claimed in claim 7 is characterized in that,
Said direction of vibration converter section links with the installing component that comprises said oscillating plate and said voice coil loudspeaker voice coil, and possesses the articular portion near this installing component,
Be formed with the accommodation section of the bonding parts that engage said direction of vibration converter section and said installing component in face side with the opposed said installing component of said articular portion.
23. speaker unit as claimed in claim 7 is characterized in that,
Between said voice coil loudspeaker voice coil and the said oscillating plate angle of possessing said direction of vibration converter section changes the shaft portion and the articular portion that is formed on the two ends of this shaft portion of the rigidity that geocline freely establishes,
Said articular portion is formed by complications continuous member freely, and said continuous member is continuous by the two side portions across this articular portion.
24. speaker unit as claimed in claim 7 is characterized in that,
Said voice coil loudspeaker voice coil possesses plane and is wound in the conductive component of annular and the matrix of the rigidity of the said conductive component of supporting,
In said matrix, lean on the picture on surface in the outside of said conductive component to be formed with conductive layer.
25. speaker unit as claimed in claim 24 is characterized in that,
Said conductive layer is equipped with a pair of, so that around said conductive component, and as being used for the trunk line performance function to said conductive component input audio signal.
26. speaker unit as claimed in claim 1 is characterized in that,
Possess the 1st maintaining part, said the 1st maintaining part directly or through miscellaneous part keeps said voice coil loudspeaker voice coil to the direction of vibration vibration of said voice coil loudspeaker voice coil freely in said stationary part.
27. speaker unit as claimed in claim 26 is characterized in that,
Possess the 2nd maintaining part, said the 2nd maintaining part directly or through miscellaneous part keeps said voice coil loudspeaker voice coil to the direction of vibration vibration of this voice coil loudspeaker voice coil freely in said stationary part.
28. speaker unit as claimed in claim 27 is characterized in that,
Possess linking part, said linking part leans on the end of said voice coil loudspeaker voice coil side to link along said direction of vibration with leaning on of said voice coil loudspeaker voice coil makes both ends between the end of said direction of vibration converter section side position in said direction of vibration converter section differently,
Between said linking part and said stationary part, said the 1st maintaining part be configured in this linking part about,
Said the 2nd maintaining part is leaned on a side of said stationary part in said relatively the 1st maintaining part, with respect to disposing about said voice coil loudspeaker voice coil,
Said the 1st maintaining part and said the 2nd maintaining part directly or through miscellaneous part with said voice coil loudspeaker voice coil roughly left and right symmetrically remain on said stationary part.
29. speaker unit as claimed in claim 28 is characterized in that,
The central portion of said the 2nd maintaining part directly or through miscellaneous part remains on said stationary part, its two ends be connected in said voice coil loudspeaker voice coil about end.
30. speaker unit as claimed in claim 28 is characterized in that,
Said the 1st maintaining part and said the 2nd maintaining part remain on said stationary part through installation unit with said linking part and said voice coil loudspeaker voice coil.
31. an electronic equipment is characterized in that, possesses the described speaker unit of claim 7.
32. an automobile is characterized in that, possesses the described speaker unit of claim 7.
33. a building is characterized in that, possesses the described speaker unit of claim 7.
CN2009801603484A 2009-07-09 2009-07-09 Magnetic circuit for speaker device and speaker device Pending CN102474687A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2009/062483 WO2011004480A1 (en) 2009-07-09 2009-07-09 Magnetic circuit for speaker device and speaker device

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CN102474687A true CN102474687A (en) 2012-05-23

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Application publication date: 20120523