CN1816220A - Speaker - Google Patents

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Publication number
CN1816220A
CN1816220A CN 200610002919 CN200610002919A CN1816220A CN 1816220 A CN1816220 A CN 1816220A CN 200610002919 CN200610002919 CN 200610002919 CN 200610002919 A CN200610002919 A CN 200610002919A CN 1816220 A CN1816220 A CN 1816220A
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China
Prior art keywords
baffle
magnetic loop
baffle plate
pillar
loud speaker
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CN 200610002919
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Chinese (zh)
Inventor
小野寺昇
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Minebea Co Ltd
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Minebea Co Ltd
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Publication of CN1816220A publication Critical patent/CN1816220A/en
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Abstract

To provide a reliable and small speaker with even a small diameter vibration cone capable of accommodating to a wide reproduction frequency band and enduring large volume input. The speaker 1 comprises a magnetic circuit 5, a vibration cone 2, a damper 3 and a voice coil 4. The periphery edge of the damper 3 is fixed to an internal periphery plane of a voice coil bobbin 10 forming the voice coil 4. The center of the damper 3 is fixed on the center of the magnetic circuit 5. A through-hole 33 is arranged at the core of the damper 3. The damper 3 is fixed on the magnetic circuit 5 by using the through-hole 33.

Description

Loud speaker
Technical field
The present invention relates to the loud speaker that in various acoustics, uses, more particularly, relate to miniature loudspeaker.
Background technology
When the miniaturization of acoustics, the miniaturization of loud speaker is necessary, thereby must wish the oscillating plate pathization.But along with the diameter that reduces oscillating plate, in the magnetic gap that voice coil loudspeaker voice coil is remained on magnetic loop, the external diameter that interior Zhou Duan is fixed on the baffle plate on the speech coil framework periphery also must reduce certainly.But if directly reduce the external diameter of baffle plate, then because the rigidity of baffle plate becomes big, the lowest resonance frequency that therefore produces loud speaker becomes big, the problem that reproduction band narrows down.
Solution as foregoing problems, following miniature loudspeaker is practical, promptly, by respectively the baffle plate peripheral part being fixed on the interior circumferential portion of speech coil framework, its centre portion being fixed on the central part of magnetic loop, become the structure that baffle plate is set in the inside of speech coil framework, so that the rigidity of baffle plate is constant big.
For example, open in the 2004-221691 communique (patent documentation 1) the spy, a kind of loud speaker has been proposed, it possesses dome oscillating plate, speech coil framework, baffle plate and magnetic loop, aforementioned dome oscillating plate has: first fixed part, its outer circumference end from circular top part begin to extend setting along the cylinder inner face of speech coil framework; And second fixed part, its outer circumference end from this first fixed part begins to extend setting with approximate right angle, said baffle is configured in the inside in space of speech coil framework defined, and the interior Zhou Duan of baffle plate is fixed on the aforementioned magnetic loop, and the outer circumference end of baffle plate engages with the cylinder inner face of the outer circumference end of aforementioned circular top part and speech coil framework.
In addition, open in the flat 5-30597 communique (patent documentation 2) the spy, a kind of loudspeaker unit has been proposed, it passes through the upper end in the central magnetic pole of magnetic loop, to be arranged on voice coil loudspeaker voice coil inside by the slide block that the sleeve that can move and second suspension constitute on the direction of principal axis of the axle of vertical fixing, the length of the contact site between the axle of voice coil loudspeaker voice coil and slide block is elongated thus, by preventing to wave the entanglement that prevents sound pressure frequency characteristic.
Patent documentation 1 spy opens 2004-221691 communique (claims, Fig. 1)
Patent documentation 2 spies open flat 5-30597 communique (claims)
Summary of the invention
But, the existing miniature loudspeaker that baffle plate is set in voice coil loudspeaker voice coil inside, area fixing between baffle plate and the magnetic loop is restricted, if fixed-area is few, then the fixedly instability between baffle plate and the magnetic loop can't keep amplitude up and down securely.In addition, because therefore fixing insufficient between baffle plate and the magnetic loop exist following problem, promptly phenomenon is waved in the vibrational system generation when big input, is caused by contacting of magnetic gap and voice coil loudspeaker voice coil the coil breakage perhaps to produce abnormal sound.
For example, aforesaid patent documentation 1, the inside of baffle arrange-ment in the space of voice coil loudspeaker voice coil defined is disclosed in Fig. 1, the interior Zhou Duan of baffle plate is fixed on loudspeaker structure on the magnetic loop, but as shown in Figure 14 of this application, if increase the bond area (W1) between baffle plate 3 and the magnetic loop 5, then adhesive strength increases and does not wave phenomenon, but owing to the essential area that works as baffle plate 3 reduces, become the shape of the amplitude that can't increase baffle plate 3, therefore the rigidity that can worry baffle plate 3 becomes big, and reproduction band narrows down.
In addition, on the contrary, as shown in figure 15, if reduce bond area (W2) between baffle plate 3 and the magnetic loop 5, then the amplitude of baffle plate 3 can become greatly, but adhesive strength dies down, and can cause the phenomenon that vibrational system is as mentioned above waved, for the reliability variation of big input.
The present invention is in view of these problem points, even a kind of miniature loudspeaker of path oscillating plate is provided, the bandwidth of regeneration frequency also can obtain wide, and is also durable for big input, and the high miniature loudspeaker of reliability.
In order to realize aforementioned purpose, technical scheme 1 described invention of the present invention is a kind of loud speaker, it is made of magnetic loop, oscillating plate, baffle plate and voice coil loudspeaker voice coil, the outer circumference end of said baffle is fixed on the inner peripheral surface of the speech coil framework that forms aforementioned voice coil loudspeaker voice coil, the central part of said baffle is fixed on the central part of aforementioned magnetic loop, it is characterized in that
Said baffle is provided with open-work on its central part, utilizes this open-work, and baffle plate is fixed on the aforementioned magnetic loop.
In addition, technical scheme 2 described inventions are according to technical scheme 1 described loud speaker, it is characterized in that,
Said baffle, the back side of its central part is extended downwards and is formed with the fixed part of bottom tube-like, and in the bottom surface sections central authorities of this fixed part, form open-work, use is arranged at the baffle plate fixture on the magnetic loop, perhaps use with magnetic loop and separate the baffle plate fixture of making, this fixed part is fixed on the central part of aforementioned magnetic loop.
In addition, technical scheme 3 described inventions are according to technical scheme 2 described loud speakers, it is characterized in that,
Aforementioned magnetic loop, its central part is provided with the baffle plate fixture.
In addition, technical scheme 4 described inventions are according to technical scheme 3 described loud speakers, it is characterized in that,
The said baffle fixture is the concavity portion that is formed on the upper board that constitutes aforementioned magnetic loop.
In addition, technical scheme 5 described inventions are according to technical scheme 3 described loud speakers, it is characterized in that,
The said baffle fixture is the through hole that is formed on the upper board that constitutes aforementioned magnetic loop.
In addition, technical scheme 6 described inventions are according to technical scheme 3 described loud speakers, it is characterized in that,
The said baffle fixture is the ring-type protuberance that is formed on the upper board that constitutes aforementioned magnetic loop.
In addition, technical scheme 7 described inventions are according to technical scheme 3 described loud speakers, it is characterized in that,
The said baffle fixture is to be arranged at ring-shaped article on the upper board that constitutes aforementioned magnetic loop, that make in addition.
In addition, technical scheme 8 described inventions are according to technical scheme 3 described loud speakers, it is characterized in that,
The said baffle fixture is to be arranged at plastic cup-shaped spare on the upper board that constitutes aforementioned magnetic loop, that make in addition.
In addition, technical scheme 9 described inventions are according to technical scheme 3 described loud speakers, it is characterized in that,
The said baffle fixture is to be arranged at the plastic cup-shaped spare of system in addition on the upper board that constitutes aforementioned magnetic loop, that have lug boss on the inner bottom surface.
In addition, technical scheme 10 described inventions are according to technical scheme 3 described loud speakers, it is characterized in that,
The said baffle fixture has bolt, and it passes the open-work that is formed on the said baffle, its part is bonded on the upper board of aforementioned magnetic loop, thereby baffle plate is remained on the magnetic loop.
In addition, technical scheme 11 described inventions are according to technical scheme 1 described loud speaker, it is characterized in that,
Said baffle, the side that its central part has open-work is a tabular, by by discoid mount body, comprise the pillar of the threaded rod that is arranged at upper surface and comprise the positioning sleeve that is installed in from the outside on this pillar and the baffle plate fixture of nut, be fixed on the magnetic loop.
In addition, technical scheme 12 described inventions are according to technical scheme 1 described loud speaker, it is characterized in that,
Said baffle, the side that its central part has open-work is a tabular, by by pillar with comprise the positioning sleeve that is installed in from the outside on this pillar and the baffle plate fixture of nut, be fixed on the magnetic loop, this pillar comprises the threaded rod that engages with the upper board of the aforementioned magnetic loop of formation.
In addition, technical scheme 13 described inventions are according to technical scheme 1 described loud speaker, it is characterized in that,
Said baffle, the side that its central part has open-work is a tabular, by by pillar with comprise the baffle plate fixture of nut, be fixed on the magnetic loop, this pillar has the support of said baffle on top, be provided with threaded rod at upper surface and base end part, above-mentioned base end part engages with the upper board that constitutes aforementioned magnetic loop.
In addition, technical scheme 14 described inventions are according to technical scheme 1 described loud speaker, it is characterized in that,
The side that said baffle, its central part have open-work is a tabular, by the baffle plate fixture that is made of pillar, be fixed on the magnetic loop, this pillar is made of threaded rod, and it has the support of said baffle on top, and base end part engages with the upper board that constitutes aforementioned magnetic loop.
In addition, technical scheme 15 described inventions are according to technical scheme 1 described loud speaker, it is characterized in that,
The side that said baffle, its central part have open-work is a tabular, by comprising the baffle plate fixture of synthetic resin system pillar, is fixed on the magnetic loop, and this pillar has on top and the reliable bonding area of aforementioned open-work periphery.
In addition, technical scheme 16 described inventions are according to technical scheme 1 described loud speaker, it is characterized in that,
The side that said baffle, its central part have open-work is a tabular, by comprising the baffle plate fixture of synthetic resin system pillar, is fixed on the magnetic loop, and this pillar forms the lug boss of path by stage portion on leading section.
In addition, technical scheme 17 described inventions are according to technical scheme 1 described loud speaker, it is characterized in that,
The side that said baffle, its central part have open-work is a tabular, by comprising the baffle plate fixture of synthetic resin system pillar, is fixed on the magnetic loop, and this pillar forms the lug boss of path by stage portion on leading section, and has base on base end part.
The effect of invention
Loud speaker of the present invention, be in its centre portion, to form open-work, utilize this open-work, and utilize the baffle plate fixture that directly is formed on the magnetic loop, and perhaps utilize the baffle plate fixture of system in addition, baffle plate is fixed on the magnetic loop, owing to baffle plate can be securely fixed on the magnetic loop, even therefore voice coil diameter is little, also can guarantee to be used to make the constant big effective necessary diameter of rigidity of baffle plate, can be corresponding with miniaturization.
Particularly, in the present invention, if use the fixed part that the round-ended cylinder shape is arranged that extends is set below downwards, and form the baffle plate of open-work on the bottom surface sections, then be arranged on the interior bonding agent of baffle plate fixture of aforementioned magnetic loop, penetration fixed part inside and outside and can be adhesively fixed more firmly baffle plate and magnetic loop, and controlled the scope that bonding agent spreads towards periphery by the baffle plate fixture, thus the stable stay in grade that makes of bonding process.
In addition, by on the upper board that constitutes magnetic loop, setting is by the ring-shaped article of plastic system in addition or the baffle plate fixture that cup-shaped spare constitutes, can exchange the baffle plate fixture corresponding to the baffle plate of various diameters, can make upper board become common component in the baffle plate of various diameters, thereby enhance productivity.
In addition, underclearance size as baffle vibration portion, the discontiguous size of situation baffle plate in baffle vibration must be arranged, if but use the baffle plate fixture that constitutes by cup-shaped spare, then can be so that the bottom of baffle vibration portion does not exist the mode in the place that is equivalent to ring-shaped article to reduce external diameter, compare with the situation of using the baffle plate fixture that is made of ring-shaped article, the underclearance size of baffle vibration portion can obtain bigger, thus more slimming.
In addition, as the baffle plate fixture that baffle plate is fixed on the magnetic loop, form baffle plate fixture and deposited fixed dam by synthetic resin, thus, compare with the situation of using bonding agent, fixing of baffle plate is easier, can improve operating efficiency.
In addition, as baffle plate, use central part to have the flat baffle plate of open-work, fix this baffle plate by the strut mount that pillar constitutes, thus, can reduce the area of the fixing required baffle plate central part of baffle plate,, also can come corresponding in the mode of the rigidity that do not increase baffle plate even voice coil diameter is very little.
And, under the situation of using pillar, there is no need baffle plate is made special shape, smooth shape gets final product, and therefore, the making of baffle plate is easy, and employed Mold Making is also simple and easy.
In addition, make pillar pass the positioning sleeve that central authorities have through hole, the threaded portion is set on the top of pillar, seize the central part of said baffle on both sides by the arms by positioning sleeve and nut, thus, compare with the situation of the fixedly use bonding agent of baffle plate, easier baffle plate is fixed on the pillar, can improves operating efficiency.
In addition, form pillar by resin, become its centre portion and pillar by deposited structure of fixing, thus, compare with the situation of using bonding agent, baffle plate fixing easier can be improved operating efficiency.
In addition, by fix baffle plate and magnetic loop by fixture, can improve the efficient of fixed operation.
And, in the present invention, because by adopting some in the aforementioned various structures, can be in the mode of the rigidity that do not increase baffle plate, firmly fix baffle plate and magnetic loop, therefore, even the miniature loudspeaker of path oscillating plate, reproduction band also can obtain wide, and waves the generation of phenomenon in the vibrational system can prevent to import greatly the time.
Description of drawings
Fig. 1 is the profile of an example of the loud speaker that the present invention relates to of expression.
Fig. 2 is the key diagram that expression is installed in the baffle plate of loud speaker shown in Figure 1 operation in the magnetic loop.
Fig. 3 is the profile of an example that expression has formed the upper board of baffle plate fixture, (a) example that is made of through hole of expression baffle plate fixture, (b) example that is made of the protuberance of ring-type of expression.
Fig. 4 is the profile that expression and magnetic loop separate an example of the baffle plate fixture of making, and (a) represents the example that is made of ring-shaped article, (b) represents this ring-shaped article is anchored at other examples on the upper board.
Fig. 5 is the profile that expression and magnetic loop separate another example of the baffle plate fixture of making, and (a) example of the set of expression and upper board (b) is represented another example, (c) represents another example.
Fig. 6 is the profile that expression and magnetic loop separate another example of the baffle plate fixture of making, and (a)~(c) expression is to the installation procedure of the upper board of baffle plate.
Fig. 7 is the profile that expression and magnetic loop separate another example of the baffle plate fixture of making.
Fig. 8 is the profile that expression and magnetic loop separate another example of the baffle plate fixture of making.
Fig. 9 be expression to baffle plate fixture shown in Figure 8 key diagram to the example of the installation of upper board, (a) expression anchors at example on the upper board with mount body, (b) expression anchors at the example of the bottom of upper board.
Figure 10 is the profile of another example of expression baffle plate fixture, (a) is illustrated in the fixing middle example that uses nut of baffle plate, and (b) example of nut is not used in expression.
Figure 11 is the profile of another example of expression baffle plate fixture.
Figure 12 is another example of expression baffle plate fixture, with and the key diagram of installation procedure.
Figure 13 represents another example of baffle plate fixture, (a) is front view, (b) is upward view.
Figure 14 is the key diagram of the relation of existing baffle plate of expression and magnetic loop.
Figure 15 is another key diagram of the relation of existing baffle plate of expression and magnetic loop.
Embodiment
Below with reference to the accompanying drawings, specify the execution mode of the loud speaker that the present invention relates to, but in the scope that does not change purport of the present invention, can carry out various changes, having more than is to be defined in disclosed execution mode.In addition, same section in the accompanying drawing, the label that mark is identical also omits its explanation, describes for difference.
Loud speaker 1 of the present invention as shown in Figure 1, by constituting: dome-type oscillating plate 2 with the lower part; Baffle plate (damper) 3; Vibrational system that forms by voice coil loudspeaker voice coil 4 and the framework 9 that supports it; And the magnetic loop 5 that constitutes by pole piece 6, magnet 7 and tubular yoke 8.
In addition, the magnetic loop 5 in the illustrated loud speaker is internal magnetic types, but because also can be applied in the external magnetic type, therefore below aforementioned pole piece 6 is referred to as upper board 6.
In the loud speaker 1 of aforementioned structure, said baffle 3, the part of its central part is extended downwards, form the fixed part 31 of round-ended cylinder shape, and on its bottom surface sections 32, form open-work 33, its peripheral part is adhesively fixed on the inner peripheral surface of speech coil framework 10 of the voice coil loudspeaker voice coil 4 of having reeled, and, the bottom surface sections 32 of aforementioned fixation portion 31 is adhesively fixed in the upper face center portion of upper board 6 directly or indirectly.
In addition, Fig. 1~baffle plate 3 shown in Figure 7 all is identical mode.
At first, specify the method for the baffle plate 3 that in the upper face center portion of upper board 6, directly is adhesively fixed, as shown in Figure 2, in the upper face center portion of aforementioned upper board 6, form the baffle plate fixture H of shallow recess, and in this baffle plate fixture H, smear the bonding agent G of aequum, if the bottom surface sections 32 of said baffle 3 is pressed in the said baffle fixture H, then the part of bonding agent G is overflowed, diffusion between bottom surface sections 32 and upper board 6, and its part enters in the fixed part 31 by open-work 33.Thereby, harden by under this state, making bonding agent G, and baffle plate 3 be securely fixed on the central part of the upper board 6 that constitutes magnetic loop 5.
In addition, the aforementioned bonding agent of double as accumulates the form of the baffle plate fixture H of portion, is not limited to aforementioned shapes, for example, can be shown in Fig. 3 (a), be the through hole of required diameter that runs through the central part of upper board 6, can shown in Fig. 3 (b), be the protuberance of ring-type also.
In addition, as the means that baffle plate 3 are adhesively fixed on indirectly the upper face center portion of upper board 6, as shown in Figure 4, the baffle plate fixture 11 that also can use split to make.
An example as this baffle plate fixture 11, shown in Fig. 4 (a), constitute by ring-shaped article, this ring-shaped article accumulates the h of portion with the open-work (external diameter of the fixed part 31 of its internal diameter and employed baffle plate about equally) of the central part that is formed at discoid mount body 11a as bonding agent, and this mount body 11a is made by rubber or resin, metal etc.In addition, Fig. 4 (b) be expression for aforementioned fixation part main body 11a stably is arranged on the upper board 6, and form protuberance 6a with ring-type along the periphery of upper board 6.
In addition, said baffle fixture 11 also can be shown in Fig. 5 (a), use the material with said baffle fixture 11 homogeneities, make the external diameter tazza shape that the end is arranged about equally of the bottom surface sections 32 that makes internal diameter and employed baffle plate, its inside diameter is accumulated the h of portion as bonding agent.
In addition, in Fig. 5, (b) the baffle plate fixture 11 shown in, be stably to be arranged on the central portion of above-mentioned plate 6 for baffle plate fixture 11 with aforementioned cup-shaped, and, location as baffle plate fixture 11 is used, and in the upper face center portion of upper board 6, formed the holding section 6b of concavity, (c) the baffle plate fixture 11 shown in, on the central portion of the back side of mount body 11a, form lug boss 11b, make aforementioned lug boss 11b engaging remain among the concavity holding section 6b of the upper face center that is arranged at upper board 6 center when determining the loud speaker assembling.
Baffle plate fixture 11 shown in Figure 6, another form of expression baffle plate fixture, this baffle plate fixture 11 is made by synthetic resin, on the inner bottom surface of the mount body 11a that end tazza shape is arranged that has lug boss 11b on the bottom surface sections shown in the earlier figures 5 (c), form the lug boss 11c of column.In addition, the external diameter of aforementioned lug boss 11c equates with the internal diameter of open-work on the bottom surface sections 32 of the fixed part 31 that is formed at employed baffle plate 3 or slightly littler than it.
This baffle plate fixture 11, at first, the open-work that will on the bottom surface sections 32 that is formed at the fixed part 31 on the baffle plate 3, form, with protrude the lug boss 11c tabling that forms on the bottom surface within it, under the state that the bottom surface sections of inner bottom surface that makes mount body 11a and baffle plate 3 is close to, utilize deposition apparatus with the fusing of the head of lug boss 11c, its head is processed into the shape of Fig. 6 (b), so that baffle plate 3 and baffle plate fixture 11 become one.
On the other hand, on the upper surface central part of upper board 6, smear bonding agent, will have the bottom surface lug boss 11b of the baffle plate fixture 11 of said baffle 3, be fitted in the concavity holding section 6c that is formed at upper board 6 upper surfaces, both are adhesively fixed.In addition, the bottom surface lug boss 11b of baffle plate fixture 11 might not be essential structure important document.
Baffle plate fixture shown in Figure 7, represent other other forms, its constituted mode is, the mount body 11a of this baffle plate fixture 11 is made of bolt, central part at upper board 6 forms the screwed hole 6c that is screwed with the mount body 11a that should be made of bolt, the axial region of mount body 11a is inserted in the open-work on the bottom surface sections 32 of the fixed part 31 be arranged on baffle plate 3, be screwed, aforementioned fixation portion 31 is remained on the upper board 6 by making axial region and aforementioned threads hole 6c.At this moment, be chosen as closely by external diameter, can more stably baffle plate 3 be fixed on the magnetic loop 5 with the internal diameter of the fixed part 31 of employed baffle plate 3 with bolt head.
Baffle plate fixture 21 shown in Figure 8 is by constituting with the lower part: discoid mount body 21a; Pillar 21b, its threaded rod by the Len req in the upper face center portion that is vertically set on this mount body 21a constitutes; And positioning sleeve 21c cylindraceous and nut 21d, they are installed on this pillar 21b from the outside, the size that cooperates the desired loud speaker that obtains, select the positioning sleeve 21c of desired height and diameter and be embedded on the pillar 21b from the outside, and after in the open-work 33 that the leading section of pillar 21b is inserted the central part that is formed at baffle plate 3, nut 21d is screwed on the leading section of pillar 21b, thereby baffle plate fixture 21 and baffle plate 3 are become one.Then, in the bonding agent maintaining part 6e of the upper face center portion that is formed at aforementioned upper board 6, smear bonding agent, mount body 21a be fitted in the bonding agent maintaining part 6e so that baffle plate 3 and baffle plate fixture 21 be fixed on magnetic loop 5 in the heart.
Because the baffle plate fixture of aforementioned structure 21 does not use the baffle plate with given shape 3 shown in Fig. 1~7, but can use smooth, be that the side is flat baffle plate, therefore the making of baffle plate is easy, the making of employed mould simultaneously is also easy, and baffle plate stably can be fixed on the magnetic loop.
Baffle plate fixture 21 shown in Fig. 9 (a), with as shown in Figure 8, that baffle plate fixture 21 is fitted to situation about using in the bonding agent maintaining part 6e that is formed on the upper board 6 is relative, its constituted mode is, the projection 61 of engaging usefulness is set at the central part of upper board 6, engaging on the bottom central part that is formed at mount body 21a is fastened on this projection 61 with recess, thereby mount body 21 is adhesively fixed on the upper board 6.
In addition, baffle plate fixture 21 shown in Fig. 9 (b), with the pillar 21b that is arranged on the upper surface central part of mount body 21a, insert from the bottom surface in the through hole 62 of the central part that is arranged on upper board 6, be installed on the pillar 21b that the upper surface to upper board 6 protrudes from the outside with the positioning sleeve 21c of desired height and diameter, after baffle plate 3 has been installed, nut 21d is screwed on the pillar, so that baffle plate 3 is fixed on the upper board 6.
Baffle plate fixture 21 shown in Figure 10, as the baffle plate fixture 21 that keeps baffle plate 3 central parts, the top of the pillar 21b that constitutes at the threaded rod that is screwed by screw thread with the through hole 62 that is formed at upper board 6 central parts, the support 21e of baffle plate 3 is set in the mode with pillar 21b quadrature, Figure 10 (a) is illustrated in central part with baffle plate 3 and remains on after aforementioned support 21e goes up, nut 21d is screwed on the leading section of pillar 21b, thereby baffle plate 3 and pillar 21b are become one.In addition, nut is not used in Figure 10 (b) expression, but the example that baffle plate 3 and support 21e are adhesively fixed no matter be which kind of situation is not used positioning sleeve, therefore can make structure simpler.
Baffle plate fixture 21 shown in Figure 11, to have the column that to guarantee with the upper surface of the reliable bonding required area of the central part of baffle plate 3, as pillar 21b, this mount body 21 is the engaging recesses that make in the bottom center that is arranged on pillar 21b, be entrenched in be located at pillar 21b bottom center engaging with on the recess, can locate thus,, therefore can make structure simpler owing to do not use positioning sleeve in the same manner with embodiment shown in Figure 10.
Baffle plate fixture 21 shown in Figure 12, on the upper end of the columned pillar 21b that has required diameter, constitutes by synthetic resin, form the little lug boss b of diameter by stage portion a, among the aforementioned lug boss b of open-work 32 insertions on making the central part that is formed at baffle plate 3 and after making baffle plate 3 and pillar 21b butt, make lug boss b fusing and baffle plate 3 and pillar 21b are become one, when loud speaker is installed, the bottom of pillar 21b is adhesively fixed in the upper face center portion of pole piece.
Figure 13 represents the example of another baffle plate fixture 21, be following structure, promptly on upper end with columned pillar 21b required diameter, that constitute by synthetic resin, form the little lug boss b of diameter by stage portion a, and form installation base c in the bottom, be provided with a plurality of holes or recess d at the back side of this base c, further improve adhesive strength by bonding agent is entered among this recess d.
In the present embodiment, the oscillating plate that illustrates loud speaker is dome-type situation, but the present invention is not limited to dome, can be corresponding to the loud speaker of various ways.

Claims (17)

1. loud speaker, it is made of magnetic loop, oscillating plate, baffle plate and voice coil loudspeaker voice coil, and the outer circumference end of said baffle is fixed on the inner peripheral surface of the speech coil framework that forms aforementioned voice coil loudspeaker voice coil, and the central part of said baffle is fixed on the central part of aforementioned magnetic loop, it is characterized in that,
Said baffle is provided with open-work on its central part, utilizes this open-work, and baffle plate is fixed on the aforementioned magnetic loop.
2. loud speaker according to claim 1 is characterized in that,
Said baffle, the back side of its central part is extended downwards and is formed with the fixed part of bottom tube-like, and the bottom surface sections at this fixed part forms open-work, use is arranged at the baffle plate fixture on the magnetic loop, perhaps use with magnetic loop and separate the baffle plate fixture of making, this fixed part is fixed on the central part of aforementioned magnetic loop.
3. loud speaker according to claim 2 is characterized in that,
Aforementioned magnetic loop, its central part is provided with the baffle plate fixture.
4. loud speaker according to claim 3 is characterized in that,
The said baffle fixture is the concavity portion that is formed on the upper board that constitutes aforementioned magnetic loop.
5. loud speaker according to claim 3 is characterized in that,
The said baffle fixture is the through hole that is formed on the upper board that constitutes aforementioned magnetic loop.
6. loud speaker according to claim 3 is characterized in that,
The said baffle fixture is the ring-type protuberance that is formed on the upper board that constitutes aforementioned magnetic loop.
7. loud speaker according to claim 3 is characterized in that,
The said baffle fixture is to be arranged at ring-shaped article on the upper board that constitutes aforementioned magnetic loop, that make in addition.
8. loud speaker according to claim 3 is characterized in that,
The said baffle fixture is to be arranged at plastic cup-shaped spare on the upper board that constitutes aforementioned magnetic loop, that make in addition.
9. loud speaker according to claim 3 is characterized in that,
The said baffle fixture is to be arranged at the plastic cup-shaped spare of system in addition on the upper board that constitutes aforementioned magnetic loop, that have lug boss on the inner bottom surface.
10. loud speaker according to claim 3 is characterized in that,
The said baffle fixture has bolt, and it passes the open-work that is formed on the said baffle, its part is bonded on the upper board of aforementioned magnetic loop, thereby baffle plate is remained on the magnetic loop.
11. loud speaker according to claim 1 is characterized in that,
Said baffle, the side that its central part has open-work is a tabular, by by discoid mount body, comprise the pillar of the threaded rod that is arranged at upper surface and comprise the positioning sleeve that is installed in from the outside on this pillar and the baffle plate fixture of nut, be fixed on the magnetic loop.
12. loud speaker according to claim 1 is characterized in that,
Said baffle, the side that its central part has open-work is a tabular, by by pillar with comprise the positioning sleeve that is installed in from the outside on this pillar and the baffle plate fixture of nut, be fixed on the magnetic loop, this pillar comprises the threaded rod that engages with the upper board of the aforementioned magnetic loop of formation.
13. loud speaker according to claim 1 is characterized in that,
Said baffle, the side that its central part has open-work is a tabular, by by pillar with comprise the baffle plate fixture of nut, be fixed on the magnetic loop, this pillar has the support of said baffle on top, be provided with threaded rod at upper surface and base end part, above-mentioned base end part engages with the upper board that constitutes aforementioned magnetic loop.
14. loud speaker according to claim 1 is characterized in that,
The side that said baffle, its central part have open-work is a tabular, by the baffle plate fixture that is made of pillar, be fixed on the magnetic loop, this pillar is made of threaded rod, and it has the support of said baffle on top, and base end part engages with the upper board that constitutes aforementioned magnetic loop.
15. loud speaker according to claim 1 is characterized in that,
The side that said baffle, its central part have open-work is a tabular, by comprising the baffle plate fixture of synthetic resin system pillar, is fixed on the magnetic loop, and this pillar has on top and the reliable bonding area of aforementioned open-work periphery.
16. loud speaker according to claim 1 is characterized in that,
The side that said baffle, its central part have open-work is a tabular, by comprising the baffle plate fixture of synthetic resin system pillar, is fixed on the magnetic loop, and this pillar forms the lug boss of path by stage portion on leading section.
17. loud speaker according to claim 1 is characterized in that,
The side that said baffle, its central part have open-work is a tabular, by comprising the baffle plate fixture of synthetic resin system pillar, is fixed on the magnetic loop, and this pillar forms the lug boss of path by stage portion on leading section, and has base on base end part.
CN 200610002919 2005-01-31 2006-01-27 Speaker Pending CN1816220A (en)

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JP2005022768A JP2006211469A (en) 2005-01-31 2005-01-31 Speaker
JP2005022768 2005-01-31

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CN 200620001998 Expired - Fee Related CN2924984Y (en) 2005-01-31 2006-01-27 Speaker

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101924974A (en) * 2009-06-12 2010-12-22 星电株式会社 Loud speaker
CN102461210A (en) * 2009-05-21 2012-05-16 伯斯有限公司 Loudspeaker inner suspension

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008124806A (en) * 2006-11-13 2008-05-29 Pioneer Electronic Corp Speaker device
WO2008059600A1 (en) 2006-11-17 2008-05-22 Pioneer Corporation Speaker

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102461210A (en) * 2009-05-21 2012-05-16 伯斯有限公司 Loudspeaker inner suspension
CN101924974A (en) * 2009-06-12 2010-12-22 星电株式会社 Loud speaker
CN101924974B (en) * 2009-06-12 2014-06-25 星电株式会社 Speaker

Also Published As

Publication number Publication date
JP2006211469A (en) 2006-08-10
CN2924984Y (en) 2007-07-18

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