CN110545507A - speaker and speaker assembling method - Google Patents
speaker and speaker assembling method Download PDFInfo
- Publication number
- CN110545507A CN110545507A CN201811477907.1A CN201811477907A CN110545507A CN 110545507 A CN110545507 A CN 110545507A CN 201811477907 A CN201811477907 A CN 201811477907A CN 110545507 A CN110545507 A CN 110545507A
- Authority
- CN
- China
- Prior art keywords
- voice coil
- magnetic
- magnetic circuit
- circuit unit
- coil bobbin
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/025—Magnetic circuit
-
- 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
- H04R9/06—Loudspeakers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
The invention provides a speaker and a method for assembling the speaker, which can position a voice coil to an accurate axial position even when a vibration plate and a dust cover are formed integrally, and is provided with a vibration system unit and a magnetic circuit unit in a coaxial manner. The speaker includes: a magnetic circuit unit (2), wherein the magnetic circuit unit (2) has a threaded portion (23a) that is arranged coaxially with the magnetic gap (24); a vibration system unit (1), the vibration system unit (1) having: a voice coil bobbin (15), the voice coil bobbin (15) being wound with a voice coil (16) disposed in the magnetic gap (24) and a diaphragm (12), the diaphragm (12) being provided with the voice coil bobbin (15) and a dust cap (13) in a center hole, the dust cap (13) being joined to the center hole of the diaphragm (12) and being disposed coaxially with the voice coil bobbin (15), and a screw portion (11a) being fastened to the screw portion (23 a); and a voice coil positioning jig (4) which is fitted into the voice coil bobbin (15) and abuts against the magnetic circuit unit (2) to position the voice coil (16) in the axial direction within the magnetic gap (24).
Description
Technical Field
The present invention relates to a speaker including a vibration system unit and a magnetic circuit unit coaxially provided, and a method of assembling the speaker.
Background
In general, a speaker includes a vibration system unit that radiates vibration in the form of sound waves, and a magnetic circuit unit that supplies magnetic force to the vibration system unit. In this case, the voice coil provided in the vibration system unit is disposed at a predetermined position in the magnetic gap formed in the magnetic circuit unit. The voice coil vibrates by interaction between an applied current and a magnetic force provided by the magnetic circuit unit. Patent document 1, for example, discloses a conventional speaker as described above.
Documents of the prior art
Patent document
Patent document 1
Japanese patent laid-open No. 2006-100879
Disclosure of Invention
technical problem to be solved by the invention
Here, the voice coil may be axially positioned by a jig. Thus, when the voice coil is positioned by the positioning jig, the positioning jig is taken out through the center hole of the diaphragm after the speaker is assembled.
However, the center hole of the diaphragm is closed by a dust cap for the purpose of protecting the voice coil, and the diaphragm and the dust cap are formed integrally in the conventional speaker. Therefore, when the speaker having the above-described configuration is assembled, the removal of the positioning jig affects the coaxiality between the vibration system unit and the magnetic circuit unit, and the performance of the speaker may be degraded.
the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a speaker and a method of assembling a speaker, which are coaxially provided with a vibration system unit and a magnetic circuit unit, and which can position a voice coil at an accurate axial position even when a diaphragm and a dust cap are integrally formed.
Technical scheme for solving technical problem
The speaker according to the present invention includes: a magnetic circuit unit having a magnetic side threaded portion disposed coaxially with a magnetic gap of the magnetic circuit; a vibration system unit having: a voice coil bobbin around which a voice coil disposed in the magnetic gap and a diaphragm are wound, the diaphragm having the voice coil bobbin, a dust cap disposed in the center hole, the dust cap being engaged with the diaphragm and closing the center hole, and a vibration-side screw portion disposed coaxially with the voice coil bobbin and fastened to the magnetic-side screw portion; and a positioning jig which is fitted in the voice coil bobbin so as to be able to be inserted and pulled in the axial direction and which abuts against the magnetic circuit unit inserted in the axial direction, thereby positioning the voice coil in the axial direction within the magnetic gap.
In the method of assembling a speaker according to the present invention, the speaker includes: a magnetic circuit unit having a magnetic gap of the magnetic circuit; a voice coil bobbin around which a voice coil disposed in the magnetic gap is wound; a diaphragm having a voice coil bobbin provided in a center hole; and a vibration system unit having a dust cap engaged with the diaphragm and closing the center hole, wherein the magnetic circuit unit is abutted in an axial direction with a positioning jig fitted in the voice coil bobbin to position the voice coil in the axial direction in the magnetic gap, and the fastening between the magnetic circuit unit and the positioning jig is released, wherein the magnetic side screw portion is disposed coaxially with the magnetic gap, and the vibration side screw portion is disposed coaxially with the voice coil bobbin to separate the magnetic circuit unit from the positioning jig in the axial direction, and the positioning jig is pulled out from the voice coil bobbin to hold the axial position of the voice coil, and the magnetic side screw portion is fastened to the vibration side screw portion.
Effects of the invention
According to the present invention, even when the diaphragm and the dust cap are formed integrally, the voice coil can be positioned at an accurate axial position, and the vibration system unit and the magnetic circuit unit are provided coaxially.
Drawings
Fig. 1 is a longitudinal sectional view showing a structure of a speaker according to embodiment 1 of the present invention.
Fig. 2 is a vertical cross-sectional view showing an operation when the voice coil positioning jig is taken out from the speaker according to embodiment 1 of the present invention.
fig. 3 is a longitudinal sectional view showing a final configuration of a speaker according to embodiment 1 of the present invention.
Fig. 4 is a vertical cross-sectional view showing a structure of a speaker according to embodiment 2 of the present invention.
Fig. 5 is a vertical cross-sectional view showing an operation when the voice coil positioning jig is taken out from the speaker according to embodiment 2 of the present invention.
fig. 6 is a longitudinal sectional view showing a final configuration of a speaker according to embodiment 2 of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the drawings.
Embodiment mode 1
Fig. 1 is a longitudinal sectional view showing a structure of a speaker according to embodiment 1. Fig. 2 is a vertical cross-sectional view showing an operation when the voice coil positioning jig according to embodiment 1 is taken out of the speaker. Fig. 3 is a longitudinal sectional view showing a final configuration of the speaker according to embodiment 1.
The speaker shown in fig. 1 is, for example, a cone speaker for playing an audio electric signal, and includes: a vibration system unit 1, a magnetic circuit unit 2, and a voice coil positioning jig 4. In this speaker, a voice coil positioning jig 4 is used when the vibration system unit 1 and the magnetic circuit unit 2 are coaxially assembled.
As shown in fig. 1, the vibration system unit 1 includes: frame 11, diaphragm 12, dust cap 13, edge 14, voice coil bobbin 15, voice coil 16, terminal 17, lead 18, damper 19, and voice coil positioning jig 4.
The frame 11 is in the form of a cylinder having a larger inner diameter at the distal end than at the proximal end, and is disposed radially outward of the vibration system unit 1. The front end of the housing 11 is positioned on the front surface of the speaker. The vibration plate 12, the dust cover 13, and the edge portion 14 are housed coaxially with the frame 11 on the radial inner side of the frame 11.
the diaphragm 12 has a conical shape, and receives vibration transmitted from a voice coil bobbin 15 described later, thereby radiating the vibration in a sound wave manner toward the front of the speaker. The vibrating plate 12 has an annular shape in which the front surface gradually faces forward from the center hole toward the outer peripheral portion.
The dust cap 13 closes the center hole of the diaphragm 12 from the front side of the speaker, and is joined to the diaphragm 12. That is, the vibration plate 12 is formed integrally with the dust cap 13. The dust cover 13 has a convex cross section whose tip end surface gradually protrudes toward the axis of the vibration system unit 1, and has a dome shape as a whole.
the edge portion 14 is annular and is disposed radially outward of the diaphragm 12. The edge portion 14 is a member for connecting the frame 11 and the vibration plate 12. That is, the outer peripheral portion of the vibrating plate 12 is joined to the inner peripheral portion of the edge portion 14. Further, the front end portion of the frame 11 is joined to the outer peripheral portion of the rim 14.
the voice coil bobbin 15 and the voice coil positioning jig 4 are each cylindrical and are disposed so as to face the rear surface of the dust cap 13. Further, voice coil bobbin 15 and voice coil positioning jig 4 are disposed coaxially with diaphragm 12 and dust cap 13. The voice coil bobbin 15 is joined to the center hole of the diaphragm 12. The voice coil positioning jig 4 is fitted into the voice coil bobbin 15 so as to be axially insertable and extractable.
The voice coil 16 is a vibration source of the vibration plate 12. Specifically, the voice coil 16 is wound around the outer peripheral surface of the voice coil bobbin 15, and vibrates in the axial direction integrally with the voice coil bobbin 15 by the interaction between the received audio electric signal and the magnetic flux in the magnetic circuit unit 2. Thereby, the vibration generated in the voice coil 16 is transmitted to the diaphragm 12 via the voice coil bobbin 15.
Further, the voice coil 16 is wound around the voice coil bobbin 15 disposed coaxially with the diaphragm 12 and the dust cap 13, so that the voice coil 16 is covered and protected from the front side of the speaker by the dust cap 13.
the terminal 17 is provided in the housing 11 and receives an audio electric signal. The lead wire 18 electrically connects the voice coil bobbin 15 or the voice coil 16 and the terminal 17. Further, fig. 1 shows a structure in which the voice coil bobbin 15 is electrically connected to the terminal 17 through a lead wire 18. Thus, the terminal 17 can transmit the received audio electric signal to the voice coil 16 via the lead wire 18 and the voice coil bobbin 15.
The damper 19 is annular and is joined between the inner peripheral surface of the frame 11 and the outer peripheral surface of the voice coil bobbin 15. The damper 19 damps vibration in the lateral direction generated in the voice coil bobbin 15 and the voice coil 16. Specifically, the damper 19 is formed of a flexible material having a concentric waveform.
On the other hand, as shown in fig. 1, the magnetic circuit unit 2 is an external magnet type unit that applies a magnetic field to the vibration system unit 1 from the radial outside thereof, and includes a pole piece 21, a magnet 22, a plate portion 23, and a magnetic gap 24. The pole piece 21, the magnet 22, and the plate portion 23 constitute a magnetic circuit and are arranged coaxially. The magnetic gap 24 is a gap portion of the magnetic circuit.
The pole piece 21 has a function of increasing the magnetic flux density in the magnetic gap 24, and includes a pole portion 21a and a flange portion 21 b. The direction of the magnetic flux in the magnetic gap 24 is orthogonal to the vibration direction of the voice coil 16. The pole 21a is shaft-shaped. The pole portion 21a is disposed coaxially with the voice coil positioning jig 4, and the pole portion 21a is fitted in the voice coil positioning jig 4 so as to be able to be inserted and pulled in the axial direction. The flange 21b is disposed at the base end of the pole 21 a.
the magnet 22 and the plate portion 23 are annular and arranged radially outward of the pole portion 21a and the voice coil positioning jig 4. The magnet 22 generates a magnetic force. The plate portion 23 is used to transmit the magnetic force generated by the magnet 22 toward the pole portion 21 a.
the flange portion 21b, the magnet 22, and the plate portion 23 are stacked in the axial direction, and the magnet 22 and the plate portion 23 are fixed to the flange portion 21 b. That is, the magnet 22 is disposed so as to be sandwiched by the flange portion 21b and the plate portion 23 from both axial sides.
Thus, the pole piece 21, the magnet 22, and the plate portion 23 constitute a magnetic circuit. The magnetic circuit has a magnetic gap 24 in the shape of a circular ring. The magnetic gap 24 is a radial gap between the outer peripheral surface of the pole portion 21a and the inner peripheral surface of the plate portion 23. In contrast, the voice coil 16 wound around the voice coil bobbin 15 is disposed at an appropriate position in the magnetic gap 24, and the axial position of the voice coil 16 is positioned by the voice coil positioning jig 4.
Therefore, when the voice coil 16 receives the audio electric signal via the terminal 17 and the lead wire 18, the received audio electric signal vibrates in the axial direction by the interaction with the magnetic flux in the magnetic circuit unit 2. Thereby, the vibration generated in the voice coil 16 is transmitted to the diaphragm 12 via the voice coil bobbin 15. As a result, the speaker radiates the vibration of the diaphragm 12 as sound waves.
Here, as described above, the voice coil 16 is positioned in the axial direction with respect to the magnetic gap 24 by the voice coil positioning jig 4. The jig 4 for positioning a voice coil has an inner peripheral abutting surface 41 and an opening end surface 42.
The inner peripheral abutting surface 41 is formed on the inner peripheral surface of the voice coil positioning jig 4. The inner peripheral abutting surface 41 is a surface which abuts against the top surface of the pole portion 21a in the axial direction when the pole portion 21a of the pole piece 21 is inserted into the voice coil positioning jig 4 from the axial direction.
The opening end face 42 is an opening end face located on the opposite side of the opening end face of the voice coil positioning jig 4 facing the dust cap 13, and the opening end face 42 is a face abutting against the surface of the flange portion 21b in the axial direction when the pole portion 21a of the pole piece 21 is inserted into the voice coil positioning jig 4 from the axial direction.
Thus, when the pole portion 21a of the magnetic circuit unit 2 is inserted into the voice coil positioning jig 4, the inner peripheral abutment surface 41 of the voice coil positioning jig 4 abuts against the pole portion 21a, and the opening end surface 42 abuts against the flange portion 21b, so that the voice coil 16 can be always positioned at the same axial position in the magnetic gap 24.
the frame 11 has a screw portion 11a as a vibration-side screw portion. The screw portion 11a is formed on the outer peripheral surface of the base end portion of the frame 11. Correspondingly, the housing 23 has a screw portion 23a as a magnetic side screw portion. The screw portion 23a is formed on the inner peripheral surface of the plate portion 23, and is disposed coaxially with the magnetic gap 24, the pole portion 21a forming the magnetic gap 24, and the plate portion 23. The threaded portion 11a and the threaded portion 23a are arranged coaxially and can be fastened to each other. That is, when the voice coil positioning jig 4 is brought into contact with the pole portion 21a and the flange portion 21b, the vibration system unit 1 and the magnetic circuit unit 2 are assembled coaxially with the threaded portion 11a and the threaded portion 23a fastened to each other.
The loudspeaker shown in fig. 1 is in a state where the voice coil positioning jig 4 is attached between the center of the vibration system unit 1 and the center of the magnetic circuit unit 2. Therefore, after assembling the vibration system unit 1 and the magnetic circuit unit 2, the operator needs to take out the voice coil positioning jig 4 from the inside of the speaker.
Next, a method of removing the voice coil positioning jig 4 after the speaker assembly will be described with reference to fig. 2 and 3.
First, as shown by the solid line in fig. 2, the operator releases the fastening between the screw portion 11a of the housing 11 and the screw portion 23a of the housing 23, and pulls out the magnetic circuit unit 2 from the vibration system unit 1. Thereby, the pole portion 21a of the pole piece 21 is pulled out from the voice coil positioning jig 4, and the voice coil positioning jig 4 and the pole piece 21 are separated from the state of abutting in the axial direction.
Next, as shown by the two-dot chain line in fig. 2, the operator pulls out the voice coil positioning jig 4 from the voice coil bobbin 15 of the vibration system unit 1. At this time, even if the voice coil positioning jig 4 is pulled out, the voice coil bobbin 15 is supported by the housing 11 via the diaphragm 12 and the damper 19, and therefore, no positional deviation in the axial direction occurs. That is, the axial position of the voice coil 16 wound around the voice coil bobbin 15 is not shifted, and the axial position positioned by the voice coil positioning jig 4 is continuously maintained.
As shown in fig. 3, the vibration system unit 1 from which the voice coil positioning jig 4 has been removed and the magnetic circuit unit 2 are assembled by the operator by fastening the screw portions 11a and 23 a. Thus, the loudspeaker is provided with the vibration system unit 1 and the magnetic circuit unit 2 coaxially, and the assembly is completed.
As described above, the speaker and the speaker assembling method according to embodiment 1 are provided with the vibration system unit 1 and the magnetic circuit unit 2 coaxially, by positioning the voice coil 16 to an accurate axial position even when the diaphragm 12 and the dust cap 13 are formed integrally.
Embodiment mode 2
Fig. 4 is a vertical sectional view showing the structure of the speaker according to embodiment 2. Fig. 5 is a vertical cross-sectional view showing an operation when the voice coil positioning jig according to embodiment 2 is taken out of the speaker. Fig. 6 is a longitudinal sectional view showing a final configuration of the speaker according to embodiment 2.
The speaker according to embodiment 2 employs an internal magnetic type magnetic circuit unit 3 instead of the external magnetic type magnetic circuit unit 2, as the speaker according to embodiment 1. Therefore, in the speaker according to embodiment 2, the vibration system unit 1 and the voice coil positioning jig 4, which are common to the speaker according to embodiment 1, are not described.
As shown in fig. 4, the magnetic circuit unit 3 is an internal magnet type unit that applies a magnetic action to the vibration system unit 1 from the radially inner side thereof, and includes a pole piece 31, a magnet 32, a plate portion 33, and a magnetic gap 34. The pole piece 31, the magnet 32, and the plate portion 33 constitute a magnetic circuit and are disposed coaxially. The magnetic gap 34 is the air gap portion of the magnetic circuit.
The pole piece 31 has a function of increasing the magnetic flux density in the magnetic gap 34, and includes a pole portion 31a and a bottom plate portion 31 b. The direction of the magnetic flux in the magnetic gap 34 is orthogonal to the vibration direction of the voice coil 16. The pole 31a is cylindrical and is disposed coaxially with the voice coil positioning jig 4. The bottom plate portion 31b is formed in a circular shape so as to close the base end side opening end of the pole portion 31 a. That is, the pole portion 31a is formed on the outer peripheral portion of the bottom plate portion 31 b.
the magnet 32 and the plate portion 33 are disposed axially inside the pole portion 31a and the voice coil positioning jig 4 in the radial direction. The magnet 32 and the plate portion 33 are disposed coaxially with the voice coil positioning jig 4, and are fitted in the voice coil positioning jig 4 so as to be able to be inserted and extracted in the axial direction. The magnet 32 generates a magnetic force. The plate portion 33 transmits the magnetic force generated by the magnet 32 toward the pole portion 31 a.
The bottom plate 31b, the magnet 32, and the plate 33 are stacked in the axial direction, and the magnet 32 and the plate 33 are fixed to the bottom plate 31 b. That is, the magnet 32 is disposed so as to be sandwiched by the bottom plate portion 31b and the plate portion 33 from both axial sides.
Thus, the pole piece 31, the magnet 32, and the plate portion 33 constitute a magnetic circuit. The magnetic circuit has a magnetic gap 34 in the shape of a circular ring. The magnetic gap 34 is a radial gap between the inner peripheral surface of the pole portion 31a and the outer peripheral surface of the plate portion 33. In contrast, the voice coil 16 wound around the voice coil bobbin 15 is disposed at an appropriate position in the magnetic gap 34, and the axial position of the voice coil 16 is positioned by the voice coil positioning jig 4.
Therefore, when the voice coil 16 receives the audio electric signal via the terminal 17 and the lead wire 18, the received audio electric signal vibrates in the axial direction by the interaction with the magnetic flux in the magnetic circuit unit 3. Thereby, the vibration generated in the voice coil 16 is transmitted to the diaphragm 12 via the voice coil bobbin 15. As a result, the speaker radiates the vibration of the diaphragm 12 as sound waves.
here, as described above, the voice coil 16 is positioned in the axial direction with respect to the magnetic gap 34 by the voice coil positioning jig 4. That is, the inner peripheral abutment surface 41 of the voice coil positioning jig 4 is a surface which abuts against the top surface of the plate portion 33 in the axial direction when the magnet 32 and the plate portion 33 are inserted into the voice coil positioning jig 4 from the axial direction.
Thus, when the magnet 32 and the plate portion 33 of the magnetic circuit unit 3 are inserted into the voice coil positioning jig 4, the inner circumferential abutment surface 41 of the voice coil positioning jig 4 abuts against the plate portion 33, and the voice coil 16 can be always positioned at the same axial position in the magnetic gap 34.
Further, the pole piece 31 has a screw portion 31c as a magnetic side screw portion. The screw portion 31c is formed on the inner peripheral surface of the pole portion 31a, and is disposed coaxially with the magnetic gap 34, the pole portion 31a forming the magnetic gap 34, and the plate portion 33. The threaded portion 11a and the threaded portion 31c are arranged coaxially and can be fastened to each other. That is, when the voice coil positioning jig 4 is brought into contact with the plate portion 33, the screw portion 11a and the screw portion 31c are fastened to each other, and the vibration system unit 1 and the magnetic circuit unit 3 are assembled coaxially.
the loudspeaker shown in fig. 4 is in a state where the voice coil positioning jig 4 is attached between the center of the vibration system unit 1 and the center of the magnetic circuit unit 3. Therefore, after assembling the vibration system unit 1 and the magnetic circuit unit 3, the operator needs to take out the voice coil positioning jig 4 from the inside of the speaker.
Next, a method of removing the voice coil positioning jig 4 after the speaker assembly will be described with reference to fig. 5 and 6.
First, as shown by the solid line in fig. 5, the operator releases the fastening between the threaded portion 11a of the frame 11 and the threaded portion 31c of the pole piece 31, and pulls out the magnetic circuit unit 3 from the vibration system unit 1. Thereby, the magnet 32 and the plate portion 33 are pulled out from the voice coil positioning jig 4, and the voice coil positioning jig 4 and the plate portion 33 are separated from the state of abutting in the axial direction.
next, as shown by the two-dot chain line in fig. 5, the operator pulls out the voice coil positioning jig 4 from the voice coil bobbin 15 of the vibration system unit 1. At this time, even if the voice coil positioning jig 4 is pulled out, the voice coil bobbin 15 is supported by the housing 11 via the diaphragm 12 and the damper 19, and therefore, no positional deviation in the axial direction occurs. That is, the axial position of the voice coil 16 wound around the voice coil bobbin 15 is not shifted, and the axial position positioned by the voice coil positioning jig 4 is continuously maintained.
As shown in fig. 6, the vibration system unit 1 from which the voice coil positioning jig 4 has been removed and the magnetic circuit unit 3 are assembled by the operator by tightening the screw portions 11a and 31 c. Thus, the loudspeaker is provided with the vibration system unit 1 and the magnetic circuit unit 3 coaxially, and the assembly is completed.
As described above, the speaker and the speaker assembling method according to embodiment 2 can position the voice coil 16 to an accurate axial position even when the diaphragm 12 and the dust cap 13 are formed integrally, and can coaxially include the vibration system unit 1 and the magnetic circuit unit 3.
The present invention may be freely combined with the embodiments within the scope of the present invention, or may be modified in any of the components of the embodiments, or may be omitted from the embodiments.
Description of the reference symbols
1 vibration system unit
2. 3 magnetic circuit unit
4 voice coil loudspeaker voice coil anchor clamps for location
11 frame body
11a screw part
12 vibrating plate
13 dust cap
14 edge part
15 voice coil framework
16 voice coil
17 terminal
18 lead wire
19 damper
21. 31 pole piece
21a, 31a pole part
21b flange part
22. 32 magnet
23. 33 plate part
23a, 31c screw part
24. 34 magnetic gap
31b bottom plate part
41 inner peripheral abutment surface
42 open end face.
Claims (6)
1. A loudspeaker, comprising:
A magnetic circuit unit having a magnetic side threaded portion disposed coaxially with a magnetic gap of the magnetic circuit;
A vibration system unit having: a voice coil bobbin around which a voice coil disposed in the magnetic gap is wound, a diaphragm in which the voice coil bobbin is disposed in a center hole, a dust cap joined to the diaphragm and closing the center hole, and a vibration-side screw portion disposed coaxially with the voice coil bobbin and fastened to the magnetic-side screw portion; and
And a positioning jig which is fitted in the voice coil bobbin so as to be axially insertable and extractable, and which is abutted against the magnetic circuit unit inserted in the axial direction, thereby positioning the voice coil in the axial direction within the magnetic gap.
2. The loudspeaker of claim 1,
The vibration system unit has:
A frame supporting the diaphragm; and
A damper joined between the vibration plate and the frame body,
The vibration-side screw portion is formed in the frame body.
3. loudspeaker according to claim 1 or 2,
The magnetic circuit unit has a pole piece and a plate portion forming the magnetic gap,
The magnetic side screw thread portion is formed on the pole piece or the plate portion.
4. The loudspeaker of claim 3,
The magnetic circuit unit includes a magnet that constitutes the magnetic circuit together with the pole piece and the plate portion,
The plate portion on which the magnetic side thread portion is formed and the magnet are disposed radially outward of the pole piece.
5. The loudspeaker of claim 3,
The magnetic circuit unit includes a magnet that constitutes the magnetic circuit together with the pole piece and the plate portion,
The plate portion and the magnet are disposed radially inward of the pole piece on which the magnetic side thread portion is formed.
6. A method of assembling a loudspeaker, the loudspeaker comprising:
A magnetic circuit unit having a magnetic gap of the magnetic circuit; and
A vibration system unit having: a voice coil bobbin around which a voice coil disposed in the magnetic gap is wound, a diaphragm having the voice coil bobbin in a center hole, and a dust cap joined to the diaphragm and closing the center hole,
The method of assembling the loudspeaker is characterized in that,
Positioning the voice coil in the axial direction in the magnetic gap by abutting the magnetic circuit unit to a positioning jig fitted in the voice coil bobbin in the axial direction,
Releasing fastening between a magnetic side screw portion disposed coaxially with the magnetic gap and a vibration side screw portion disposed coaxially with the voice coil bobbin to separate the magnetic circuit unit from the positioning jig in the axial direction,
Pulling out the positioning jig from the voice coil bobbin and holding the axial position of the voice coil,
And fastening the magnetic side thread part and the vibration side thread part.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-101678 | 2018-05-28 | ||
| JP2018101678A JP2019208106A (en) | 2018-05-28 | 2018-05-28 | Speaker and method of assembling the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110545507A true CN110545507A (en) | 2019-12-06 |
Family
ID=68701914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811477907.1A Pending CN110545507A (en) | 2018-05-28 | 2018-12-05 | speaker and speaker assembling method |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2019208106A (en) |
| CN (1) | CN110545507A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113163309A (en) * | 2021-05-26 | 2021-07-23 | 海宁市西米尼科技有限公司 | Loudspeaker with voice coil reinforcing ring |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113542996B (en) * | 2021-06-25 | 2023-03-24 | 厦门今起电子有限公司 | Tool jig for micro loudspeaker and assembling process thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61198999A (en) * | 1985-02-28 | 1986-09-03 | Pioneer Electronic Corp | Method for assembling loudspeaker |
| JPWO2018011912A1 (en) * | 2016-07-13 | 2019-04-25 | 三菱電機エンジニアリング株式会社 | Speaker, vibration system unit and magnetic circuit unit |
-
2018
- 2018-05-28 JP JP2018101678A patent/JP2019208106A/en active Pending
- 2018-12-05 CN CN201811477907.1A patent/CN110545507A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113163309A (en) * | 2021-05-26 | 2021-07-23 | 海宁市西米尼科技有限公司 | Loudspeaker with voice coil reinforcing ring |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2019208106A (en) | 2019-12-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8520885B2 (en) | Composite speaker | |
| US8837762B2 (en) | Speaker | |
| EP2779695B1 (en) | Loudspeaker unit | |
| JP2007142981A (en) | Speaker apparatus | |
| US20050276436A1 (en) | Speaker device | |
| JP2007208592A (en) | Speaker unit | |
| CN110545507A (en) | speaker and speaker assembling method | |
| WO2019073948A1 (en) | Speaker and method for manufacturing speaker | |
| JPH0937536A (en) | Oscillation converter in voice transmission system | |
| WO2020218042A1 (en) | Electroacoustic transducer | |
| WO2018011912A1 (en) | Loudspeaker, vibration system unit, and magnetic circuit unit | |
| US20060269094A1 (en) | Speaker | |
| JP2007300180A (en) | Speaker | |
| JP2007124241A (en) | Speaker apparatus | |
| KR200459612Y1 (en) | Speaker improved the reproduction of low frequency band | |
| WO2018051480A1 (en) | Electroacoustic conversion device | |
| JP7291888B2 (en) | Speaker device manufacturing method and speaker device | |
| US20240056740A1 (en) | Speaker magnetic circuit and speaker driver | |
| US11985492B2 (en) | Speaker and method of manufacturing a speaker | |
| JP2005151210A (en) | Speaker apparatus | |
| US20060093182A1 (en) | Speaker | |
| JP2007251285A (en) | Speaker | |
| JP2008211617A (en) | Headphone | |
| JP2008167238A (en) | Speaker apparatus | |
| US9729972B2 (en) | Speaker device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191206 |