KR20150137517A - Diaphragm assembly for speaker device - Google Patents

Diaphragm assembly for speaker device Download PDF

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Publication number
KR20150137517A
KR20150137517A KR1020140065506A KR20140065506A KR20150137517A KR 20150137517 A KR20150137517 A KR 20150137517A KR 1020140065506 A KR1020140065506 A KR 1020140065506A KR 20140065506 A KR20140065506 A KR 20140065506A KR 20150137517 A KR20150137517 A KR 20150137517A
Authority
KR
South Korea
Prior art keywords
voice coil
surround
coupling
coupling region
region
Prior art date
Application number
KR1020140065506A
Other languages
Korean (ko)
Inventor
이한량
Original Assignee
서일경
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 서일경 filed Critical 서일경
Priority to KR1020140065506A priority Critical patent/KR20150137517A/en
Publication of KR20150137517A publication Critical patent/KR20150137517A/en

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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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • 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
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/041—Centering
    • H04R9/043—Inner suspension or damper, e.g. spider
    • 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
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/045—Mounting

Abstract

The present invention relates to a diaphragm assembly used in a speaker device, and a diaphragm assembly of a speaker device according to the present invention includes a surround coupling region formed in a substantially planar shape and formed at an outermost edge, A vibrating portion including a coil coupling region; A surround portion formed of an elastic material and formed in an annular shape so as to engage with the vibrating portion therein and having an innermost edge coupled to the surround coupling region; And a voice coil coupled to a bottom surface of the vibrating portion, the voice coil selectively coupling to the voice coil coupling region without coupling with the surround coupling region.
In the diaphragm assembly of the speaker device according to the embodiment of the present invention, the voice coil is wound on the bobbin and is coupled to the voice coil coupling region via a suspension.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a diaphragm assembly for a speaker device,

The present invention relates to a diaphragm assembly of a speaker device, and relates to a diaphragm assembly of a speaker device capable of preventing a radial vibration mode while lowering a profile of a speaker device.

The diaphragm assembly of the speaker device directly affects the acoustic performance. The diaphragm assembly of the speaker device includes a vibrating part for generating a sound pressure through vibration, a surround part for providing damping force to the vibrating part through elastic restoring force, and a voice coil . Such a diaphragm assembly forms a vibration system that vibrates due to the interaction between the voice coil and the magnet. The acoustic characteristics vary depending on the boundary condition between the diaphragm and the surround, and the position of the voice coil and the diaphragm attachment site.

Fig. 1 shows a speaker 10 using a conventional cone type diaphragm, and Fig. 2 shows a longitudinal sectional view along the line AA '. The diaphragm assembly of the loudspeaker 10 according to Fig. 1 has a vibrating part 11 having a concave central part and a surround part 12 of elastic material engaging with the edge of the vibrating part, And a voice coil 13 having a small diameter r 1 . According to this structure, although the diameter of the voice coil 13 is small, the driving force is concentrated due to the concave shape of the vibration surface 11, and distortion of the vibration surface 11 during vibration is suppressed. This effectively suppresses the radial vibration mode mainly occurring in the low frequency as well as the concentric vibration mode which occurs mainly in the high frequency sound. However, the speaker device 10 according to the structure of FIG. 1 has a problem that the height of the speaker device 10 increases by the height h 1 of the vibration surface 11 due to the concave shape of the vibration surface 11. The increase in the height of the speaker device 10 has a problem that the display device to which the speaker device is attached is not thin and the bezel is slim.

Fig. 3 shows a speaker device in which the profile of the speaker device 20 is reduced, and Fig. 4 shows a longitudinal sectional view along line BB '. The diaphragm assembly of the speaker device 20 according to the structure of FIG. 3 includes a vibration portion 21 which is a substantially planar shape, a surround portion 21 of elastic material which engages with the edge of the vibration portion, a relatively large diameter and a voice coil 23 of r 2 . According to this structure, the profile is reduced by the planar vibration section 21 as compared with the speaker device of FIG. In addition, since the diameter r 2 of the voice coil 13 is large, the number of turns of the coil can be reduced, so that the height of the voice coil 13 is lowered, and as a result, the profile of the speaker device 20 is further reduced. However, unlike the speaker device 10 of FIG. 1, since the vibration portion 21 is flat, distortion occurs easily during vibration, and speaker characteristics are deteriorated due to the concentric vibration mode and the radial vibration mode. On the other hand, the occurrence of the concentric vibration mode can be suppressed by forming the upwardly convex stiffness reinforcing region 24 in a track shape on the upper surface of the vibration portion 21. [ However, since the voice coil 23 is attached to the coupling portion between the surround portion 22 and the vibration portion 21 in the middle portion of the long axis of the speaker device 20, the driving force is directly transmitted to the boundary condition, There is a problem that the acoustic characteristic due to the radial vibration mode deteriorates because the damping force is not sufficiently provided. Such a problem causes a dip phenomenon in which SPL (Speaker Pressure Level) is drastically decreased at 1 kHz to 2 kHz in which human hearing is sensitive.

Korean Patent Laid-Open Publication No. 1996-0020604 Korean Patent Laid-Open Publication No. 1997-0058306

In order to solve the above problems, the present invention provides a diaphragm assembly of a loudspeaker apparatus according to the present invention, wherein the vibrating portion is formed in a substantially planar shape, and a voice coil coupling region is formed inside the surround coupling region, And is intended to prevent a dip phenomenon at a specific frequency due to the radial vibration mode.

The diaphragm assembly of the speaker device according to the embodiment of the present invention includes the voice coil coupling region where the vibration portion is formed below the surround coupling region so that even though the voice coil having the diameter larger than the width of the surround coupling region is used, It is another object that the interference between the surround combining areas can be prevented at the source.

The diaphragm assembly of the speaker device according to another embodiment of the present invention may further include a buffer region between the voice coil coupling region and the surround coupling region so that the vibration unit is provided with an additional damping force to increase the efficiency of the speaker apparatus, .

In order to achieve the above object, a diaphragm assembly of a loudspeaker apparatus according to the present invention includes a diaphragm assembly formed in a substantially planar shape, including a surround coupling region formed at an outermost edge and a voice coil coupling region inside the surround coupling portion, Jin Dongbu; A surround portion formed of an elastic material and formed in an annular shape so as to engage with the vibrating portion therein and having an innermost edge coupled to the surround coupling region; And a voice coil coupled to a bottom surface of the vibrating portion, the voice coil selectively coupling to the voice coil coupling region without coupling with the surround coupling region.

In the diaphragm assembly of the speaker device according to the embodiment of the present invention, the voice coil is wound on the bobbin and is coupled to the voice coil coupling region via a suspension.

The vibrating plate assembly of the speaker device according to the embodiment of the present invention may further include a buffer region formed between the surround coupling region and the voice coil coupling region so as to be convex on the upper surface.

In the diaphragm assembly of the speaker device according to the embodiment of the present invention, the vibrating part is formed at a position lower than the surround coupling area.

In the diaphragm assembly of the speaker device according to the embodiment of the present invention, the vibrating part is formed in a position where the voice coil coupling area is 0.1 mm to 1 mm lower than the surround coupling area.

In the diaphragm assembly of the speaker device according to the embodiment of the present invention, the vibrating part may further include an inclined area between the surround coupling area and the voice coil coupling area.

 The vibrating plate assembly of the speaker device according to the embodiment of the present invention may further include a buffer region formed between the surround coupling region and the voice coil coupling region so as to be convex on the upper surface.

In the diaphragm assembly of the loudspeaker apparatus according to the embodiment of the present invention, the voice coil has a diameter larger than the distance of the mutually opposed voice coil coupling areas.

In the diaphragm assembly of the speaker device according to the embodiment of the present invention, the vibrating portion is formed in a shape having a short axis and a long axis, and the voice coil has a diameter substantially equal to a distance of the surround combining region facing each other .

In the diaphragm assembly of the speaker device according to the embodiment of the present invention, the vibrating portion may further include a reinforcing region formed inside the voice coil coupling region to have a convex shape on the upper surface.

According to the above configuration, in the diaphragm assembly of the speaker device according to the present invention, the vibration part is formed in a substantially planar shape, and the voice coil coupling area is formed inwardly of the surround coupling area, It is effective to prevent the dip phenomenon at a specific frequency due to the radial vibration mode.

The diaphragm assembly of the speaker device according to the embodiment of the present invention includes the voice coil coupling region where the vibration portion is formed below the surround coupling region so that even though the voice coil having the diameter larger than the width of the surround coupling region is used, It is possible to prevent the interference between the surround combining regions at the source.

The diaphragm assembly of the speaker device according to another embodiment of the present invention further includes a buffer region between the voice coil coupling region and the surround coupling region so that the vibration unit is provided with an additional damping force to increase the efficiency of the speaker apparatus do.

1 is an external view of a speaker device according to Prior Art 1. Fig.
2 is a longitudinal sectional view of a speaker device according to Prior Art 1. Fig.
Fig. 3 is an external view of a speaker device according to Prior Art 2. Fig.
4 is a longitudinal sectional view of a speaker device according to Prior Art 2. Fig.
5 is a longitudinal sectional view of a speaker device according to a first embodiment of the present invention.
6 is a longitudinal sectional view of a diaphragm assembly according to a second embodiment of the present invention;
7 is a longitudinal sectional view of a diaphragm assembly according to a third embodiment of the present invention.
8 is a view showing the coupling between the voice coil and the suspension.
9 is a bottom view of the suspension.
10 is a longitudinal sectional view of a diaphragm assembly according to a fourth embodiment of the present invention.
11 is a longitudinal sectional view of a diaphragm assembly according to a fifth embodiment of the present invention.

Hereinafter, a diaphragm assembly of a speaker device 100 according to the present invention will be described with reference to the drawings. Fig. 5 shows a first embodiment of the present invention, Fig. 6 shows a second embodiment of the present invention, Fig. 7 shows a third embodiment of the present invention, Fig. 8 shows a fourth embodiment of the present invention, Fig. 12 shows a sixth embodiment of the present invention, and Fig. The first embodiment and the second embodiment are embodiments in which the surround coupling region 111 and the voice coil coupling region 112 are formed at the same height. Is formed at a lower height than the surround coupling region 111. [0154]

First, a first embodiment of the present invention will be described with reference to FIG. The diaphragm assembly according to the present invention includes a vibration unit 110, a surround unit 120, and a voice coil 130.

The vibrating portion 110 is formed in a substantially planar shape and includes a surround coupling region 111 formed at the outermost edge and a voice coil coupling region 112 inside the surround coupling portion. The vibrating part 110 may be made of a usual diaphragm material, and may be made of pulp, a metal thin film, a polymer film, a carbon fiber film, a glass fiber film, or a flexible PCB. The planar shape of the vibration portion 110 is not particularly limited and may be formed into a track shape or a rectangular shape having a major axis and a minor axis as shown in Figs. 1 and 3, or a circular or square shape have. The cross-sectional shape of the vibration portion 110 is formed in a substantially planar shape. The substantially planar shape means that a convex portion or a concave portion may be formed in a part of the surface, and a shape excluding a dome-shaped diaphragm having a concave shape as a whole as shown in FIG. 1 or a convex shape as a whole do. Meanwhile, the vibration unit 110 may further include a rigid reinforcing area 115 formed inside the voice coil coupling area 112 so as to be convex on the upper surface. According to this embodiment, the three-dimensional shape of the rigid reinforcing region 115 serves to increase the stiffness of the vibration portion 110, thereby providing an effect of increasing speaker efficiency.

The surround portion 120 is formed of an elastic material, and is formed in an annular shape so that the vibration portion 110 is coupled to the inside thereof, and the innermost edge thereof is coupled to the surround coupling region 111. The surround part 120 is made of an elastic material and may be made of, for example, TPU (thermal polyurethane). The outermost edge of the surround part 120 is coupled to the frame 170 of the speaker device 100 and the innermost edge of the surround part 120 is coupled to the surround coupling area 111 of the vibration part 110. [ A convex shape or the like may be formed upward between the outermost edge and the innermost edge of the surround part 120 to reinforce the elastic restoring force provided to the vibration part 110. [

The voice coil 130 is configured to be coupled to the bottom surface of the vibration unit 110 and selectively coupled to the voice coil coupling area 112 without being coupled to the surround coupling area 111. [ The voice coil 130 according to the present invention includes a voice coil 130 that is self-bonded to be attached to the vibration unit 110, a voice coil 130 wound around the bobbin 131, and a bobbin 131 attached to the vibration unit 110 130 and a voice coil 130 that is attached to the suspension 132 that is coupled to the vibration portion 110 as shown in FIG. 9 and is self-bonded or held on the bobbin 131. Also, the voice coil 130 does not necessarily have to be one. Depending on the embodiment, a plurality of voice coils 130 may be attached to one vibration unit 110. The cross-sectional shape of the voice coil 130 is not particularly limited, and may be circular, track, square, or the like.

According to the present invention, the driving force generated by the interaction between the magnetic field of the magnetic circuit and the electric field of the voice coil 130 is not directly transmitted to the outer surround coupling unit where the vibration unit 110 and the surround unit 120 are coupled And is transmitted only to the coupling portion of the voice coil 130 formed on the inner side thereof, it is possible to prevent the loss of vibration in the boundary condition. 5, since the voice coil 130 is attached at a certain distance (H offset ) from the surround coupling portion, vibration is not directly transmitted to the suspension 132, but is transmitted through the surface of the vibration portion 110 The vibration progresses, and consequently, the concentric vibration mode can be effectively blocked.

6 shows a second embodiment in which the vibration portion 110 further includes a buffer portion 113 formed between the surround coupling region 111 and the voice coil coupling region 112 in a convex shape. According to the second embodiment, since the buffer part 113 of the vibration part 110 provides an additional damping force, the effect of improving the speaker efficiency is provided. In addition, since the buffering portion 113 provides an additional three-dimensional shape to the vibration portion 110, an additional effect of improving the stiffness of the vibration portion 110 increases the damping force without reducing the area of the vibration surface, It can also provide an effect that does not occur.

7 is a side view of the present invention in which the voice coil coupling region 112 is formed at a lower position than the surround coupling region 111 and the inclined region 114 is formed between the surround coupling region 111 and the voice coil coupling region 112 And shows a third embodiment. Even when the diameter of the voice coil 130 is set to be larger than the distance of the voice coil coupling area 112 facing the voice coil 130 according to the third embodiment, the voice coil 130 and the bottom surface of the surround coupling area 111 are prevented from interfering with each other It is possible to prevent the driving force from being transmitted to the surround side. Accordingly, since the voice coil 130 having a large diameter can be used while effectively shielding the concentric vibration mode, the height of the voice coil 130 can be reduced, and consequently the profile of the speaker device 100 can be reduced. If the voice coil coupling area 112 is excessively lower than the surround coupling area 111, there is a problem that the profile of the speaker device 100 is increased similarly to the case of FIG. 7, the height difference (V offset ) is exaggerated for explaining the invention, and the height difference of the voice coil coupling area 112 in the present invention is the difference between the height of the voice coil 130 and the surround coupling area 111 It is sufficient that the vibrating portion 110 has a height difference enough to maintain a substantially planar shape. For example, the voice coil coupling area 112 is formed to be formed at a position 0.1 mm to 1 mm lower than the surround coupling area 111.

8 shows a state in which the voice coil coupling region 112 is formed at a lower position than the surround coupling region 111 and the inclined region 114 is formed between the surround coupling region 111 and the voice coil coupling region 112, 130 shows a fourth embodiment of the present invention which is attached to the vibration portion 110 via the bobbin 131 and the suspension 132. The inner side of the surround 120 is positioned on the outer side so that the height of the coupling area of the frame 170 of the surround part 120 and the height of the voice coil coupling area 112 of the vibration part 110 are set to be equal to each other, As shown in FIG. According to this embodiment, even when the voice coil 130 is attached to the vibration unit 110 via the suspension 132 in a planar shape as shown in FIGS. 9 and 10, Lt; / RTI > On the other hand, in the case of forming the adhesive region 133 on the inner side rather than the outermost circular shape as shown in FIG. 10, the diameter of the voice coil 130 may be larger than the distance of the voice coil coupling region 112 opposing each other Thereby providing an effect that can be formed. At this time, the diameter of the voice coil 130 can be formed as the distance of the surround coupling region 111 facing each other.

11 is a sectional view of the present invention in which the voice coil coupling region 112 is formed at a lower position than the surround coupling region 111 and the buffer region 113 is formed between the surround coupling region 111 and the voice coil coupling region 112 And shows a fifth embodiment. According to the fifth embodiment, the buffer region 113 has the effect of providing additional damping force and additional stiffness. In addition, since the diameter of the voice coil 130 can be increased, the profile of the speaker device 100 can be further reduced.

12 shows a state in which the voice coil coupling region 112 is formed at a position lower than the surround coupling region 111 and the buffer region 113 is formed between the surround coupling region 111 and the voice coil coupling region 112, And a rigid reinforcing area 115 within the coupling area 112. The rigid reinforcing area 115 is formed by a rigid reinforcing area 115, The sixth embodiment is the same as the fifth embodiment, but the stiffening region 115 inside the vibration portion 110 provides an effect of improving the speaker efficiency by increasing the stiffness of the vibration portion 110. [

100: Speaker device 110:
111: Surround coupling area 112: Voice coil coupling area
113: buffer area 114: inclined area
115: rigidity reinforcing region 120:
130: voice coil 140: magnet
150: yoke 160: plate
170: frame

Claims (10)

A vibration section formed in a substantially planar shape and including a surround coupling region formed at the outermost edge and a voice coil coupling region inside the surround coupling portion;
A surround portion formed of an elastic material and formed in an annular shape so as to engage with the vibrating portion therein and having an innermost edge coupled to the surround coupling region; And
And a voice coil coupled to a bottom surface of the vibrating part and selectively coupling to the voice coil coupling area without being coupled to the surround coupling area.
The method according to claim 1,
Wherein the voice coil is wound on a bobbin and coupled to the voice coil coupling region via a suspension.
The method according to claim 1,
Wherein the vibrating part further comprises a buffer area formed between the surround coupling area and the voice coil coupling area to have a convex shape on an upper surface thereof.
The method according to claim 1,
Wherein the vibrating part is formed at a position lower than the surround coupling area of the voice coil coupling area.
5. The method of claim 4,
Wherein the vibrating part is formed at a position where the voice coil coupling area is 0.1 mm to 1 mm lower than the surround coupling area.
5. The method of claim 4,
Wherein the vibrating portion further includes an inclined region between the surround coupling region and the voice coil coupling region.
5. The method of claim 4,
Wherein the vibrating portion further comprises a buffer region formed between the surround coupling region and the voice coil coupling region and formed in a convex shape on an upper surface thereof.
The method according to claim 1,
Wherein the voice coil has a diameter larger than a distance of a voice coil coupling area facing each other.
9. The method of claim 8,
Wherein the vibrating portion is formed in a shape having a short axis and a long axis,
Wherein the voice coil has a diameter substantially equal to a distance of the surround coupling region facing each other.
The method according to claim 1,
Wherein the vibrating portion further includes a reinforcing region formed inside the voice coil coupling region to have a convex shape on an upper surface thereof.
KR1020140065506A 2014-05-30 2014-05-30 Diaphragm assembly for speaker device KR20150137517A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020140065506A KR20150137517A (en) 2014-05-30 2014-05-30 Diaphragm assembly for speaker device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020140065506A KR20150137517A (en) 2014-05-30 2014-05-30 Diaphragm assembly for speaker device

Publications (1)

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KR20150137517A true KR20150137517A (en) 2015-12-09

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112237011A (en) * 2018-06-26 2021-01-15 花田昭人 Voice coil vibrating plate

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112237011A (en) * 2018-06-26 2021-01-15 花田昭人 Voice coil vibrating plate
CN112237011B (en) * 2018-06-26 2021-12-10 花田昭人 Voice coil vibrating plate
US11297435B2 (en) 2018-06-26 2022-04-05 Akito Hanada Voice coil diaphragm

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