CN103167388B - Speaker unit - Google Patents
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- CN103167388B CN103167388B CN201210555193.8A CN201210555193A CN103167388B CN 103167388 B CN103167388 B CN 103167388B CN 201210555193 A CN201210555193 A CN 201210555193A CN 103167388 B CN103167388 B CN 103167388B
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- magnetic circuit
- playback
- speaker unit
- framework
- circuit part
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Abstract
The present invention provides a kind of speaker unit, wherein, it even if the size in playback direction reduces, still is able to control acoustic pressure in broadband region, and bass and limpid alt clearly can be reproduced such that it is able to provide the good audio reproduction having compared with high tone quality and low cost.In described speaker unit, magnetic circuit part is maintained at the outside of the anti-playback side of framework by framework, vibration transfer member by framework to be maintained at the inner side of framework along playback direction by way of can moving.Framework be there is recess, protuberance and recessed space be integrally formed parts, wherein, recess accommodates magnetic circuit part；Protuberance is prominent towards anti-playback side in the both sides of recess；And in recessed space is formed at protuberance and recessed from the one of the playback side of magnetic circuit part facing to anti-playback side.
Description
Technical field
The present invention relates to speaker unit.
Background technology
All the time, people use to be arranged on stereo set and have raising of outer cover (enclosure) for sounding
Sound device device.Such speaker unit has the loudspeaker unit of dynamic type, and by vibrating the vibration of this loudspeaker unit
Plate and sounding.
But, in recent years, stereo set constantly minimizes and is thinned, and is difficult to find that therein and installs big volume
The space of outer cover.(for example, it is thus proposed that do not need to install the small speaker devices of the outer cover as separate part
See patent document 1).
Fig. 6 is the profile of the construction of the speaker unit illustrating prior art.
In figure, the framework of 811 expression speaker units, this framework is integrally molded so as the plane in circle by resin forming
Shape, and this framework includes: the magnetic circuit supporting part 817 of the magnetic circuit part of support speaker device；Cylindrical as speaker unit
The side of sidewall portion 812 of perisporium；And before the front end of described magnetic circuit supporting part 817 combined with the inner circumferential of side of sidewall portion 812
Plate portion 816.
Then, the york piece 834 of ware type shape is installed, at the recess of this york piece 834 in the inside of described magnetic circuit supporting part 817
Middle receiving magnet 841 and flat board 842.In addition, arrange oscillating plate in the front (top in figure) of described magnetic circuit supporting part 817
846.Further, fixed coil 843 after this oscillating plate 846, this coil 843 is arranged on periphery and the yoke of this flat board 842
In the magnetic gap being formed between frame 834.
In addition, be fixed with the periphery sealing lid 833 as circular slab parts in the rear end of described side of sidewall portion 812.Pass through
It is fixed with described sealing lid 833, is closed framework 811 after, and sealing lid 833 and magnetic circuit supporting part 817 and above
Form rear space 821 between plate portion 816.
And, formed in described front panel portion 816 and the rear of oscillating plate 846 is connected with rear space 821
Multiple communicating passage 815.In addition, be fixed with in the front end of described side of sidewall portion 812 as circular slab parts and be formed many
The periphery of the cover 826 of the passage not shown in individual figure.By being fixed with described cover 826, quilt before framework 811
Close and can prevent foreign matter from entering.
Thus, framework 811 and sealing lid 833 play the effects of outer cover (or housing), therefore can obtain good tonequality.
Prior art literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2003-348679 publication
But, in the speaker unit of described prior art, due at the formation rear, rear of magnetic circuit supporting part 817 sky
Between 821 to accommodate magnet 841 etc., therefore the becoming large-sized of direction before and after framework 811.
In recent years, the stereo set of radiovisor etc. constantly minimizes and is thinned, and particularly, is using liquid crystal
The slim TV of display, plasma scope etc. receives in the stereo set of device etc., is difficult to find that installation therein
There is the space of the speaker unit of large-scale framework 811.
But, receive the thin and small-sized stereo set of device etc. to install slim TV, if by before framework 811
Rear to size shorten to minimize, then the volume of rear space 821 diminishes, tonequality decline.
Further, since there is front panel portion 816 between the rear of oscillating plate 846 and rear space 821, therefore, even if
Form multiple communicating passage 815, tonequality can not be avoided to decline.Being additionally, since sealing lid 833 with framework 811 is single portion
Part, therefore, it is difficult to reduce the manufacturing cost of speaker unit.
Content of the invention
The technical problem to be solved in the present invention
It is an object of the invention to solve problem present in the speaker unit of described prior art, and provide such
Speaker unit: in this speaker unit, framework is not only used as outer cover, also serves as the frame keeping magnetic circuit part outside it
Frame；And in this speaker unit, forming recess in the inner side of framework, this recess is from the one of the playback side of magnetic circuit part facing to instead
Playback side is recessed, even if thus the size in playback direction reduces, it is also possible to control acoustic pressure in broadband region, and can
Reproducing the bass of clear (crisp) and limpid alt, audio reproduction is good, and tonequality is high, low cost.
The technological means that the present invention uses
To achieve these goals, the invention provides a kind of speaker unit, have: oscillating plate；This oscillating plate is made to shake
Dynamic driver element；And be used as to cover the framework of the outer cover of the anti-playback side of described oscillating plate, described oscillating plate and framework from
Playback side sees have narrow width and elongated flat shape, and described driver element has magnetic circuit part and cooperates with this magnetic circuit part and produce
The driver part of raw vibration and the vibration transfer member that the vibration of this driver part is sent to described oscillating plate, described magnetic
Road portion is in the outside of the anti-playback side being maintained at described framework by described framework, and described vibration transfer member passes through described frame
Body is maintained at the inner side of described framework along playback direction in the way of can moving, and this framework for have recess, protuberance and
The integral part of parts in recessed space, its center dant accommodates described magnetic circuit part, and protuberance is in two lateral anti-playback sides of this recess
Highlight, and recessed space is formed in this protuberance, and recessed towards anti-playback side from the surface of magnetic circuit part in playback side.
In other speaker units of the present invention, further, the face on the anti-playback side of described protuberance and described magnetic circuit
Face on the anti-playback side in portion is substantially flush.
In other speaker units another of the present invention, further, at least one recessed sky in the female space
Between containing perforate with ft connection.
In the yet other speaker unit of the present invention, further, described perforate is opened in the anti-playback side of described protuberance
On face on.
In the yet other speaker unit of the present invention, further, described perforate is by along orthogonal with playback direction
Direction extend groove and connect with recessed space.
Advantageous Effects
Having framework according to the speaker unit of the present invention, this framework can be used not only as outer cover but also can be used as at it
Outside keeps the framework of magnetic circuit part.Framework has the recess being formed within it, and this recess is from the one side of the playback side of magnetic circuit part
Recessed towards anti-playback side.Thus, it even if the size in playback direction reduces, still is able to control acoustic pressure in broadband region,
And can reproduce bass and limpid alt clearly, audio reproduction is good, and tonequality is improved, and reduces simultaneously
Cost.
Brief description
Fig. 1 a and Fig. 1 b is the stereogram of the speaker unit in the present invention the 1st embodiment, and Fig. 1 a therein is for from putting
The view that sound side is seen, Fig. 1 b is the view in terms of anti-playback side.
Fig. 2 a and Fig. 2 b is two views of the speaker unit in the present invention the 1st embodiment, and Fig. 2 a therein is flat
Face view, Fig. 2 b is the sectional view of the A-A arrow along Fig. 2 a.
Fig. 3 is the exploded perspective view of the speaker unit the present invention the 1st embodiment in terms of playback side.
Fig. 4 is the exploded perspective view of the speaker unit the present invention the 1st embodiment in terms of anti-playback side.
Fig. 5 a and Fig. 5 b is three views of the speaker unit in the present invention the 2nd embodiment, and Fig. 5 a therein is flat
Face view, Fig. 5 b is side view, and Fig. 5 c is the sectional view of the B-B arrow along Fig. 5 a.
Fig. 6 is the sectional view of the construction of the speaker unit illustrating prior art.
Description of reference numerals
10 speaker units
11 housings
12 side plates
13 back plate portions
15th, 815 communicating passage
15a tonequality adjustment hole
16 front panel portion
16a oscillating plate accommodates opening portion
16b circumference
17 magnetic circuit support convex
17a magnetic circuit supports convex sidepiece
18 magnetic circuit fixed components
18a magnetic circuit fixed component accommodates recess
21st, 821 rear space
The recessed space of 21a
34 magnetic circuits accommodate recess
35 end plate
35a installation portion
35b fixed plate portion
35c mounting opening
36 coils pass through opening portion
37 partition board portion
37a muffler connecting portion
40 magnetic circuit part
41st, 841 magnet
41a, 42a centre bore
42nd, 842 flat board
43 voice coil loudspeaker voice coils
44 bobbins
45 dust caps
46th, 846 oscillating plate
46a central portion
46b oscillating plate edge part
46c cushion part
48th, 834 york piece
48a central post portion
50 mufflers
51 bobbin connecting portions
52 electric wires
53 terminals
54 guide plates
54a stator
55 arm portions
56 housing coupling part
56a short leg
56b long leg
811 frameworks
812 side of sidewall portion
816 front panel portions
817 magnetic circuit supporting parts
826 covers
833 seal lid
843 coils
Detailed description of the invention
With reference to the accompanying drawings embodiment of the present invention are described in detail.
Fig. 1 a and Fig. 1 b is the stereogram of the speaker unit in the present invention the 1st embodiment.It should be noted that its
In, Fig. 1 a is the view in terms of playback side, and Fig. 1 b is the view in terms of anti-playback side.
In figure, 10 represent the speaker unit in the present embodiment, which is and are arranged on radiovisor, radio reception
The various stereo sets such as device, PC, CD player, DVD player, game machine use.Speaker unit is logical
Cross the signal of telecommunication to be driven thus the sound-producing device that reproduces audio signal.Speaker unit 10 in the present embodiment can be small-sized
Change, therefore, in general, may be installed employ liquid crystal display, plasma scope etc. slim TV receive device,
Pocket pc, PDA (Personal Digital Assistant), portable game machine etc. are slim or compact electric apparatus,
Electronic equipment etc. use.This speaker unit may be installed any kind, arbitrary size electrical equipment, electronic equipment etc.
Any position uses.
It should be noted that in the present embodiment, in order to the composition of various piece of speaker unit 10 and dynamic is described
The term in expression up, down, left, right, before and after etc. the direction made and use is not absolute but relative, at speaker unit
10 or its parts be suitable when being posture shown in figure, but, the posture at speaker unit 10 or its parts changes
During change, it should change according to the change of posture to explain.
Described speaker unit 10 has: magnetic circuit part 40, and it has the driver element for reproducing audio signal sounding；
Vibrated by this magnetic circuit part 40 thus the oscillating plate 46 of sounding；And the housing 11 as framework, described framework is not only used as protecting
Hold the framework of each parts of described magnetic circuit part 40 and oscillating plate 46 etc., also serve as anti-playback side (with send sound
Contrary side, side) surround the outer cover of oscillating plate 46.It should be noted that described driver element also have described later such as
The parts of voice coil loudspeaker voice coil 43 and bobbin 44 etc..
In addition, when playback side (sending the side of sound) sees towards plane projection face, described speaker unit 10 is thin
Long is elongated, or can be for having major axis and the ellipse of short axle.In other words, speaker unit 10 on the whole for, it is relative
For the size of longitudinal direction (long axis direction), the size of width (short-axis direction) is short.
Described housing 11 is usually the integral part of parts being made up of resins such as synthetic resin, but housing 11 is also permissible
It is made up of metals such as aluminium, steel, copper, or the composite can being composited by resin, carbon, metal etc. is constituted.In addition, described shell
Body 11 has front panel portion the 16th, side plate the 12nd, back plate portion 13 and end plate 35.Bottom back plate portion 13 on anti-playback side is formed, front
The major part in plate portion 16 is in the upper shed of playback side.In other words, housing 11 is in the shape of the container with bottom, and is relative
For the size of longitudinal direction (long axis direction), the container-like parts in what the size of width (short-axis direction) was short the have end.Need
Illustrating, the middle body at the long axis direction of the anti-playback side of described housing 11 is formed as recessed towards playback side
The magnetic circuit of recess accommodates recess 34, and the both sides of the long axis direction that this magnetic circuit accommodates recess 34 relatively become as towards anti-playback
The magnetic circuit support convex 17 of the prominent protuberance in side.Described magnetic circuit part 40 is accommodated in described magnetic circuit and accommodates recessed in the outside of housing 11
In portion 34.
So, magnetic circuit part 40 is exposed in the outside of housing 11, therefore, it is possible to the heat release effectively magnetic circuit part 40 being produced
In extraneous air such that it is able to prevent speaker unit 10 particularly magnetic circuit part 40 overheated.
In addition, in the rear space 21 described later that is internally formed of described magnetic circuit support convex 17, and, described being arranged on
At least one of the back plate portion 13 of magnetic circuit receiving recess 34 both sides forms the tonequality adjustment hole 15a as perforate, wherein said
Perforate is positioned at the outboard end of the communicating passage 15 that the ft connection by described rear space 21 and housing 11 gets up.
Further, in the rear plate portion 13 tonequality adjustment hole 15a be arranged around conducting with voice coil loudspeaker voice coil 43 described later
Terminal 53.This terminal 53 is inserted into counterpart terminal, for the electric audio signal from audible signal generating device is sent to sound
Circle 43, the amplifier etc. that wherein said counterpart terminal is had with electrical equipment, the electronic equipment etc. that are provided with speaker unit 10
Audible signal generating device connects.It should be noted that the position of described terminal 53 not necessarily must be in the tonequality in back plate portion 13
Around adjustment hole 15a, it is also possible to arbitrarily arrange.
In addition, described magnetic circuit part 40 has: the magnet 41 of rectangular tabular or highly low cube-shaped profile；And
York piece 48 on the face of the anti-playback side being arranged on this magnet 41.Described magnet 41 is permanent for be made up of the high material of coercive force
Magnetite, described york piece 48 for forming the parts of magnetic circuit, for example, is made up of the high material of the magnetic susceptibilities such as soft iron.It should be noted that
The part exposed in anti-playback side of the magnet 41 in described york piece 48 has the shape of rectangular flat shape.So in this part,
The size making its long axis direction is more slightly shorter than the size of the long axis direction of magnet 41, and the size of its short-axis direction and magnet 41
Short-axis direction equivalently-sized or more slightly shorter than the size of the short-axis direction of magnet 41.In addition, described magnetic circuit part 40 has on the whole
Have rectangular flat shape or a highly low cube-shaped profile, and be received and be arranged on there is about rectangular flat shape or highly low
The described magnetic circuit of cube-shaped profile accommodate in recess 34.
In the state of described magnetic circuit part 40 is received and is arranged in magnetic circuit receiving recess 34, the face of its anti-playback side
The face of (that is, the face of the anti-playback side of york piece 48) anti-playback side with back plate portion 13 is substantially flush.In addition, for described magnetic circuit
For portion 40, the size of its long axis direction is more slightly shorter than the size of the long axis direction that magnetic circuit accommodates recess 34, and its short-axis direction
Size and the short-axis direction of housing 11 equivalently-sized or more slightly shorter than the size of the short-axis direction of housing 11, therefore can be by really
Be contained in magnetic circuit and accommodate in recess 34, and outside will not be projected into from side plate 12.
Thus, even if installing the narrow space of speaker unit 10 in the inside of electrical equipment, electronic equipment etc. and not surpassing
Go out the size in direction (playback direction) before and after housing 11 in the case of have more than needed, it is also possible to install and use speaker unit 10.
It should be noted that described housing 11 has the cantilever-shaped magnetic circuit fixed component 18 prominent towards anti-playback side.Should
The free end of magnetic circuit fixed component 18 forms uncinus, and be separately positioned on that magnetic circuit accommodates the long axis direction of recess 34 two
End.Then, form magnetic circuit fixed component at the position corresponding to magnetic circuit fixed component 18 of magnetic circuit support convex 17 and accommodate recess
18a, thus absorb the displacement outside the long axis direction towards magnetic circuit receiving recess 34 of magnetic circuit fixed component 18.It is contained in magnetic circuit
Accommodate on the face of the anti-playback side that the magnetic circuit part 40 in recess 34 is hung over magnet 41 by the uncinus of magnetic circuit fixed component 18
It is lockable, thus magnet 41 will not depart from from magnetic circuit receiving recess 34.Therefore, the installation parts such as screw, joint need not be used
Just can easily and positively by magnetic circuit part 40 be arranged on housing 11.
Form oscillating plate described later in described front panel portion 16, accommodate opening portion 16a, and oscillating plate 46 is accommodated in this
Oscillating plate accommodates in the 16a of opening portion.When seeing from plane projection face, this oscillating plate 46 be shaped as elongated rectangle, or be
There is major axis and the ellipse of short axle, and the size of its short-axis direction and the equivalently-sized of the short-axis direction of housing 11 or ratio
The size of the short-axis direction of housing 11 is slightly shorter.Therefore, in terms of the playback side of speaker unit 10, front panel portion 16 is positioned at oscillating plate 46
The outside of long axis direction, outside the short-axis direction of oscillating plate 46, then there's almost no front panel portion 16.It should be noted that
Part outside the long axis direction being positioned at oscillating plate 46 of front panel portion 16 plays the effect of dividing plate, is used for preventing from going out from anti-playback side
The sound coming returns to playback side.
Described oscillating plate 46 has: the oscillating plate that the central portion 46a being formed at its center is connected with peripheral part one
Edge part 46b and cushion part 46c being connected with the periphery one of this oscillating plate edge part 46b.At described central portion
In 46a, accommodate the dust cap 45 of the leading section being arranged on aftermentioned bobbin 44.In addition, described oscillating plate edge part 46 has
For improving the section configuration of the bending of flexibility.It should be noted that the flat shape of described oscillating plate edge part 46b is tool
The shapes such as the ellipse having major axis and short axle.Further, described cushion part 46c is flat-shaped part, its outer peripheral edge be shaped as by
The shape cut sth. askew in elongated rectangular corner.
In addition, described end plate 35 has installation portion 35a.This installation portion 35a is parallel with described front panel portion 16, and have from
Described end plate 35 is along the fixed plate portion 35b extending longitudinally outward out, and mounting opening 35c.Described fixed plate portion 35b is
It is connected with the loudspeaker component for fixing not shown in the figure that the electrical equipment being provided with speaker unit 10, electronic equipment etc. are had
Part.Further, described mounting opening 35c is the part inserted for the set parts such as bolt, screw.Need explanation
It is that the shape of described installation portion 35a and size can be according to being provided with speaker unit 10 in the framework of electrical equipment, electronic equipment etc.
The shape at position and size be suitably changed in.For example, the diameter of described mounting opening 35c can be according to bolt, screw etc.
The external diameter of set parts and change.In addition, the shape of described fixed plate portion 35b and size can be according to described electrical equipment, electronic equipments
Change Deng shape and the size of the loudspeaker component for fixing being had.
Below the internal structure of above-mentioned speaker unit 10 is illustrated.
Fig. 2 a and Fig. 2 b is two plan views of the speaker unit in the present invention the 1st embodiment, and Fig. 3 is for from playback
The exploded perspective view of the speaker unit in the present invention the 1st embodiment that side is seen, Fig. 4 is the present invention the in terms of anti-playback side
The exploded perspective view of the speaker unit in 1 embodiment.In addition, Fig. 2 a is plan view, Fig. 2 b is the A-A arrow along Fig. 2 a
The sectional view of head.
As it can be seen, magnetic circuit part 40 also has the flat board 42 as top board on the face of the playback side being arranged on magnet 41.
This rectangular flat plate-like shape of flat board 42, as york piece 48, is also the parts forming magnetic circuit, and this flat board 42 is for example by soft iron
Constitute Deng the high material of magnetic susceptibility.In addition, described magnet 41 has through-thickness (vertical direction in Fig. 2 b) therethrough
The centre bore 41a of the heart, described flat board 42 also has the centre bore of through-thickness (vertical direction in Fig. 2 b) heart therethrough
42a.In the state of flat board 42 is arranged on magnet 41, the centre bore 41a of magnet 41 is concentric with the centre bore 42a of flat board 42.
It should be noted that preferably, the diameter less than the centre bore 41a of magnet 41 for the diameter of the centre bore 42a of flat board 42.
In addition, york piece 48 have from which the heart vertically along playback side to columned central post portion 48a extended.
In the state of york piece 48 is arranged on magnet 41, in described central post portion 48a is inserted into the centre bore 41a of magnet 41 and flat board
In the centre bore 42a of 42.Between the outer peripheral face of central post portion 48a of the inner peripheral surface of the centre bore 42a of this flat board 42 and york piece 48
The space being formed becomes magnetic gap, is provided as the voice coil loudspeaker voice coil 43 of coil in this magnetic gap.
This voice coil loudspeaker voice coil 43 is for such parts being formed: be wrapped in the wire that material high for the electric conductivity by such as copper etc. is constituted
The rear end of the cylindric bobbin 44 that through-thickness (fore-and-aft direction) (that is, playback direction (vertical direction in Fig. 2 b)) extends
The outer peripheral face in portion, this voice coil loudspeaker voice coil plays the effect of driver part.And, described voice coil loudspeaker voice coil 43 has the thin cylindric shape of thickness on the whole
Shape, and be arranged in described magnetic gap in the moveable mode of through-thickness (that is, playback direction).
In addition, described bobbin 44 is as vibration transfer member, forwards extend from the front end of described voice coil loudspeaker voice coil 43, and
Connect the dust cap 45 in substantially disk-like member in its leading section.And, the lateral surface at described bobbin 44 is connected with and subtracts
The bobbin connecting portion 51 of sound device 50.It should be noted that the housing coupling part 56 of described muffler 50 is connected with housing 11.By
This, described voice coil loudspeaker voice coil 43 is retained as (that is, not playing the centre bore 42a's of the flat board 42 of magnetic pole effect with the two sides of above-mentioned magnetic gap
The outer peripheral face of central post portion 48a of inner peripheral surface and york piece 48) move along playback direction contiguously.
It should be noted that be provided with electric wire 52 on bobbin 44.This electric wire 52 is for being sent to electric audio signal
Voice coil loudspeaker voice coil 43, the one end not shown in figure is connected with voice coil loudspeaker voice coil 43, and the other end is connected with terminal 53.Described electric wire 52 total length is longer,
Owing to the relation of diagram merely illustrates a part in Fig. 3 and Fig. 4.
Further, the lateral surface of described bobbin 44 is connected to the inner peripheral of the central portion 46a of oscillating plate 46.Need
Illustrating, described oscillating plate 46 is arranged on the more front (that is, being arranged on playback side) of described muffler 50.Described oscillating plate 46
The cushion part 46c material that for example EVA (ethylene-vinyl acetate copolymer resins) etc. had flexibility constitute, lead to behind
Cross sticker etc. and set the oscillating plate being arranged on the front panel portion 16 being formed at housing 11 accommodate the circumference of opening portion 16a
16b.Thus, oscillating plate 46 is kept to hinder vibration by front panel portion 16 simultaneously.
As shown in Figure 4, magnetic circuit accommodates recess 34 is such recess: this recess is by parallel with front panel portion 16 and back plate portion 13
Partition board portion 37 and pair of magnetic circuits that is orthogonal with this partition board portion 37 and that extend along playback direction support convex sidepiece 17a and divide
It is three parts.Support convex sidepiece it should be noted that be provided with near the central authorities that each magnetic circuit supports convex sidepiece 17a along magnetic circuit
The magnetic circuit fixed component 18 that 17a extends.
Described partition board portion 37 is by the inside and outside rectangular flat shape part separating of housing 11, relative to playback side
To partition board portion 37 is positioned between front panel portion 16 and back plate portion 13, and the face of the playback side with flat board 42 (which is and is contained in magnetic circuit
Accommodate the face of the playback side of the magnetic circuit part 40 in recess 34) adjoin.Hold as described above, accommodate in magnetic circuit part 40 and be arranged on magnetic circuit
In the state of receiving in recess 34, the face on the anti-playback side of magnetic circuit part 40 is substantially with the face on the anti-playback side in back plate portion 13
Flush, therefore relative to playback direction, the chi of the thickness direction of the distance between partition board portion 37 and back plate portion 13 and magnetic circuit part 40
Very little of substantially equal.
In described partition board portion 37, the coil that formation through-thickness is entreated therethrough passes through opening portion 36.Such as Fig. 2 b institute
Show, the almost overall inside being all located at housing 11 of bobbin 44, i.e. be positioned at playback side relative to partition board portion 37, but, voice coil loudspeaker voice coil
At least rear end part of 43 is passed through coil and is extended towards playback side relative to partition board portion 37 by opening portion 36, thus, and this portion
Split-phase is positioned at the magnetic gap of playback side for coil by opening portion 36 arrival.
In addition, as it is shown on figure 3, the periphery formation in the playback side of partition board portion 37 is prolonged towards playback side relative to partition board portion 37
The muffler connecting portion 37a stretching.It in the one side of the playback side of this muffler connecting portion 37a, is fixed with by sticker and subtracts sound
The housing coupling part 56 of device 50.
In the present embodiment, described muffler 50 is the integral part of flat part being made up of resins such as nylon, institute
State muffler 50 to have: the bobbin connecting portion 51 of circular (that is, flange shape)；Square around this bobbin connecting portion 51
The ring-type housing coupling part of shape 56；And described bobbin connecting portion 51 and housing coupling part 56 coupled together slightly S-shaped
A pair arm portions 55 of shape.It should be noted that described housing coupling part 56 includes that the short-axis direction along housing 11 extends
A pair long leg 56b that pair of short edges portion 56a and the long axis direction along housing 11 extend, and arm portions 55 and each minor face
Portion 56a connects.
Described arm portions 55 is smooth strip-shaped members, but, slightly S-shaped permissible by making flat shape bend to
Play flexibility, thus at the end being connected on bobbin connecting portion 51 and the short leg 56a being connected to housing coupling part 56
On end between can stretch.Therefore, it is connected to bobbin 44 and voice coil loudspeaker voice coil 43 and the oscillating plate 46 1 of bobbin connecting portion 51
Rise and can move along playback direction.Thus, oscillating plate 46 can unfetteredly vibrate.
Guide the guide plate 54 of electric wire 52 it should be noted that formed on the face of the playback side of described muffler 50 and consolidate
Determine the stator 54a of electric wire 52.Thus, electric wire 52 is maintained on the face of playback side of muffler 50.It should be noted that institute
State guide plate 54 and stator 54a can suitably omit.
On the playback side relative to oscillating plate 46, rear space 21 is formed at the inside of housing 11, empty for use as sound equipment
Between.This rear space 21 is for being supported convex sidepiece 17a by side plate the 12nd, back plate portion the 13rd, end plate the 35th, partition board portion the 37th, magnetic circuit, being shaken
Dynamic plate the 46th, bobbin 44 and magnetic circuit part 40 delimit space around.Therefore, housing 11 plays the effect of outer cover, and this can fill
The performance of speaker unit 10 is waved in distribution.
In addition, the both sides of the long axis direction of the partition board portion 37 in side space 21 are formed relative to flat board 42 in the rear
The face (which is the face of the playback side of magnetic circuit part 40) of the playback side recessed space 21a recessed towards playback side.This recessed space 21a
For space corresponding with the inner space of magnetic circuit support convex 17.It should be noted that as it was previously stated, the anti-playback of magnetic circuit part 40
The face of side is substantially flush with the face of the anti-playback side in back plate portion 13, the therefore degree of depth of the female space 21a, i.e. recessed sky
Between the size in playback direction of 21a of substantially equal with the size of the thickness direction of magnetic circuit part 40.
So, by forming a pair recessed space 21a, the rear as the sound space of the anti-playback side of oscillating plate 46 is empty
Between 21 volume become big.Therefore, even if the appearance and size of speaker unit 10 is little, it is possible to so that the appearance of the housing 11 as outer cover
Long-pending (that is, playing the volume of the rear space 21 of sound space effect) becomes big, therefore, it is possible to reproduce bass and limpid clearly
Alt, audio reproduction becomes good, and tonequality is improved.
In the present embodiment, at least one of a pair recessed space 21a, setting is formed at the tonequality in back plate portion 13
Adjustment hole 15a.
In the speaker unit with outer cover, the volume V (unit: rise) of outer cover is represented by following formula (1):
V=(355 × a4)/(α×f2× m) ... formula (1)
Wherein, a is the equivalent redius (unit: cm) of oscillating plate area, and α is coefficient, f be lowest resonance frequency (unit:
Hz), m is the quality (unit: g) of vibration system.In addition, in the loudspeaker with the tonequality adjustment hole being formed on outer cover,
The recommendation of factor alpha is more than 0.5.
In the trial target of the speaker unit 10 of the present embodiment that the present inventor makes, V is 0.0223 liter, and a is
2.3cm, f are 240Hz, and m is 1.8g.Plugging these values in above formula (1), factor alpha is 4.3.
Thus, it will be seen that in speaker unit 10 in the present embodiment, coefficient a, in the range of recommendation, can obtain
Obtain audio reproduction well and tonequality.
It should be noted that in example shown in the figure, in only Fig. 2 b, the recessed space 21a on right side has tonequality regulation
Hole (perforate) 15a, but it is also possible to only the recessed space 21a in left side has tonequality adjustment hole 15a, or can be in left and right
The recessed space 21a of both sides has tonequality adjustment hole 15a.
It should be noted that in example shown in the figure, being shaped as of this tonequality adjustment hole 15a is substantially T-shaped, but
It is that its shape is not limited to substantially T-shaped, but can have any shape.In addition, the area of tonequality adjustment hole 15a is also permissible
Suitably set.
Thus, the rear space 21 of outer cover effect is played by tonequality adjustment hole 15a and ft connection.Therefore, pass through
The length of regulation tonequality adjustment hole 15a, cross sectional shape, cross-sectional sizes etc., can control the acoustic pressure of various frequency band.Particularly,
The tonequality of lower frequency band can be improved.
So, in the present embodiment, speaker unit 10 has the driving list that the 46th, oscillating plate makes oscillating plate 46 vibrate
The housing 11 playing outer cover effect of the anti-playback side of unit and covering oscillating plate 46, oscillating plate 46 and housing 11 are from playback side
Seeing have narrow width and elongated flat shape, driver element has magnetic circuit part 40 and cooperates with magnetic circuit part 40 and produce vibration
Voice coil loudspeaker voice coil 43 and the vibration by voice coil loudspeaker voice coil 43 are sent to the bobbin 44 of oscillating plate 46, and magnetic circuit part 40 passes through housing 11 in anti-playback
Be maintained at the outside of housing 11 at side, bobbin 44 by housing 11 to be maintained at shell along the moveable mode in playback direction
On body 11, parts that housing 11 is formed as one, and have and accommodate the magnetic circuit of magnetic circuit part 40 and accommodate recess and the 34th, accommodate recessed at magnetic circuit
The both sides in the portion 34 magnetic circuit support convex 17 prominent towards anti-playback side and magnetic circuit support convex 17 in formation, from magnetic
The one of the playback side in the road portion 40 recessed space 21a recessed facing to anti-playback side.
So, the separate part of such as framework etc. need not be used, only just can keep with integral part of housing 11 driving
Unit and oscillating plate 46, such that it is able to reduce number of parts so that assembles easily, reduces the cost of speaker unit 10.In addition,
Cover the anti-playback side of oscillating plate 46 with integral part of housing 11, therefore improve the function as outer cover, even if using width
Spend narrow and elongated shape, it is also possible to obtain there is good audio reproduction, the speaker unit 10 of high tone quality.Further,
Owing to recessed space 21a is set to from the playback side one of magnetic circuit part 40 facing to anti-playback side recessed, even if therefore by loudspeaker
The size in the playback direction of device 10 reduces to minimize, it is possible to so that the volume as the housing 11 of outer cover becomes big, Neng Gouzai
Now bass and limpid alt clearly, audio reproduction becomes good, and tonequality is improved.
In addition, the face of the anti-playback side of magnetic circuit support convex 17 is substantially flush with the face of the anti-playback side of magnetic circuit part 40.
Therefore, even if reducing the size in the playback direction of speaker unit 10 to minimize, it is possible to so that the playback of recessed space 21a
Becoming large-sized of direction.
Further, at least one the recessed space in recessed space 21a comprises the communicating passage 15 with ft connection.By
This, can control the acoustic pressure of various frequency band, especially it is possible to improve the tonequality of lower frequency band.
Below the present invention the 2nd embodiment is illustrated.It should be noted that with regard to identical with the 1st embodiment
Structure, is marked with identical reference and omits its description.In addition, with regard to the action identical with described 1st embodiment
And identical effect, also omit its description.
Fig. 5 a and Fig. 5 b is three views of the speaker unit in the present invention the 2nd embodiment.It should be noted that figure
5a is plan view, and Fig. 5 b is side view, and Fig. 5 c is the sectional view of B-B arrow along Fig. 5 a.
In the present embodiment, at least one the recessed space 21a in a pair recessed space 21a has the company as groove
Circulation passage 15.The end of anti-playback side in recessed space 21a for this communicating passage 15 is along the direction (tool orthogonal with playback direction
It for body, is the long axis direction of housing 11) extend.Then, tonequality adjustment hole (perforate) 15a is formed at magnetic circuit support convex 17
Side (specifically, is formed at the side of end plate 35).In addition, tonequality adjustment hole 15a's is generally rectangular in shape.
With regard to the composition of other side, for example, although the shape of each several parts such as installation portion 35a or size and aforementioned 1st real
Execute scheme different, but substantially identical with the 1st embodiment, therefore omit its description.
In the trial target of the speaker unit 10 of the present embodiment that the present inventor makes, V is 0.0114 liter, and a is
1.93cm, f are 210Hz, and m is 0.7g.Plugging these values in above formula (1), factor alpha is 14.0.
Thus, it will be seen that in speaker unit 10 in the present embodiment, factor alpha also in the range of recommendation, because of
And good audio reproduction and tonequality can be obtained.
So, in the present embodiment, the communicating passage 15 with groove function is prolonged along the direction orthogonal with playback direction
Stretch, and be positioned at the tonequality adjustment hole 15a of outboard end of communicating passage 15 at the lateral opening of magnetic circuit support convex 17.
So, by the length of regulation communicating passage 15 and tonequality adjustment hole 15a, cross sectional shape, cross-sectional sizes etc., permissible
Control the acoustic pressure of various frequency band.
It should be noted that the present invention is not limited to the embodiment above, can carry out each based on spirit of the invention
Planting deformation, these are not precluded from outside the scope of the present invention.
Industrial usability
Present invention can be suitably applied to speaker unit.
Claims (5)
1. a speaker unit, it is characterised in that
A () this speaker unit has: oscillating plate；Make the driver element that this oscillating plate vibrates；And be used as to cover described vibration
The framework of the outer cover of the anti-playback side of plate；
B () described oscillating plate and framework have narrow width and elongated flat shape in terms of playback side；
C () described driver element has: magnetic circuit part；Cooperate with this magnetic circuit part and produce the driver part of vibration；And this is driven
The vibration of dynamic component is sent to the vibration transfer member of described oscillating plate, and described magnetic circuit part is maintained at described by described framework
The outside of the anti-playback side of framework, described vibration transfer member by described framework to be protected along the moveable mode in playback direction
Hold the inner side in described framework；And
D parts that () this framework is formed as one and having: accommodate the recess of described magnetic circuit part, this recess by partition board portion and with
This partition board portion pair of magnetic circuits that is orthogonal and that extend along playback direction supports convex sidepiece and is divided into three parts, and described partition board portion is for by frame
The inside and outside rectangular flat shape part separating of body；The protuberance prominent in two lateral anti-playback sides of this recess；And
Formed, the recessed space recessed facing to anti-playback side from the playback side one of described magnetic circuit part in this protuberance, the female is empty
Between size and the thickness direction of described magnetic circuit part equal sized in playback direction.
2. speaker unit according to claim 1, wherein, the face of the anti-playback side of described protuberance and described magnetic circuit part
The face of anti-playback side flushes.
3. speaker unit according to claim 1 and 2, wherein, at least one recessed space in the female space
Including the perforate with ft connection.
4. speaker unit according to claim 3, wherein, described perforate is opened in the face of the anti-playback side of described protuberance
On.
5. speaker unit according to claim 3, wherein, described perforate is by along the direction orthogonal with playback direction
Extend groove and connect with the female space.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011276759A JP5714477B2 (en) | 2011-12-19 | 2011-12-19 | Speaker device |
| JP2011-276759 | 2011-12-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103167388A CN103167388A (en) | 2013-06-19 |
| CN103167388B true CN103167388B (en) | 2016-10-05 |
Family
ID=48590062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210555193.8A Expired - Fee Related CN103167388B (en) | 2011-12-19 | 2012-12-19 | Speaker unit |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5714477B2 (en) |
| CN (1) | CN103167388B (en) |
| TW (1) | TWI549526B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6251881B2 (en) * | 2013-07-24 | 2017-12-27 | パナソニックＩｐマネジメント株式会社 | SPEAKER SYSTEM, ELECTRONIC DEVICE USING THE SAME, AND MOBILE DEVICE |
| CN106465018B (en) * | 2014-06-26 | 2019-07-19 | Toa株式会社 | Loudspeaker unit and the loudspeaker for having the loudspeaker unit |
| WO2018196147A1 (en) * | 2017-04-26 | 2018-11-01 | 华为技术有限公司 | Horn assembly, electronic device and method for mounting horn assembly in electronic device |
| TWI706677B (en) * | 2019-04-19 | 2020-10-01 | 友達光電股份有限公司 | Display device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1647580A (en) * | 2002-04-25 | 2005-07-27 | 皇家飞利浦电子股份有限公司 | Loudspeaker with a first and a second diaphragm body |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02502959A (en) * | 1987-04-08 | 1990-09-13 | ハーマン インターナショナル インダストリーズ，インコーポレイテッド | shallow loudspeaker |
| JPH05244687A (en) * | 1992-02-28 | 1993-09-21 | Sony Corp | Speaker device |
| JPH1098789A (en) * | 1996-09-24 | 1998-04-14 | Matsushita Electric Ind Co Ltd | Speaker system |
| EP1377115B1 (en) * | 2002-06-24 | 2016-01-06 | Panasonic Intellectual Property Management Co., Ltd. | Loudspeaker diaphragm |
| JP4078322B2 (en) * | 2004-03-11 | 2008-04-23 | ホシデン株式会社 | speaker |
| JP2006043573A (en) * | 2004-08-04 | 2006-02-16 | Tokyo Parts Ind Co Ltd | Electromagnetic acoustic transducer incorporated with flat type vibration motor |
| JP2007221561A (en) * | 2006-02-17 | 2007-08-30 | Minebea Co Ltd | Speaker |
| JP5068570B2 (en) * | 2007-03-29 | 2012-11-07 | Ｎｅｃカシオモバイルコミュニケーションズ株式会社 | Waterproof sound equipment |
| JP2009094912A (en) * | 2007-10-11 | 2009-04-30 | Panasonic Corp | Speaker |
| CN201150128Y (en) * | 2008-02-01 | 2008-11-12 | 瑞声声学科技(常州)有限公司 | Miniature sounding device |
| CN101674515B (en) * | 2009-09-15 | 2013-01-02 | 歌尔声学股份有限公司 | Miniature moving ring type electroacoustic transducer and assembling method thereof |
| CN201509302U (en) * | 2009-09-15 | 2010-06-16 | 歌尔声学股份有限公司 | Minitype movable ring type electro-acoustic transformer |
| JP4575515B1 (en) * | 2009-10-20 | 2010-11-04 | 大和音響株式会社 | Speaker and its assembling method |
| CN201563227U (en) * | 2009-11-09 | 2010-08-25 | 瑞声声学科技(常州)有限公司 | miniature sounder |
| TWM388189U (en) * | 2010-01-22 | 2010-09-01 | Fortune Grand Technology Inc | Ultra thin speaker |
-
2011
- 2011-12-19 JP JP2011276759A patent/JP5714477B2/en not_active Expired - Fee Related
-
2012
- 2012-12-18 TW TW101148062A patent/TWI549526B/en not_active IP Right Cessation
- 2012-12-19 CN CN201210555193.8A patent/CN103167388B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1647580A (en) * | 2002-04-25 | 2005-07-27 | 皇家飞利浦电子股份有限公司 | Loudspeaker with a first and a second diaphragm body |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103167388A (en) | 2013-06-19 |
| TWI549526B (en) | 2016-09-11 |
| JP5714477B2 (en) | 2015-05-07 |
| JP2013128199A (en) | 2013-06-27 |
| TW201334579A (en) | 2013-08-16 |
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