JP2002307012A - Multifunctional acoustic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a multifunctional acoustic apparatus provided with a vibrating function with good mobility and a pronouncing function with good tone quality. SOLUTION: In the multifunctional acoustic apparatus having a frame body, a speaker diaphragm, a voice coil fixed in the speaker diaphragm for vibrating the speaker diaphragm and carrying out pronunciation, a speaker magnet for moving the speaker diaphragm in cooperation with the voice coil, a speaker yoke member for guiding the magnetic fluxes generated by the speaker magnet to the voice coil, a rotator which is a vibrating body, a rotator permanent magnet for driving a rotator fixed in the rotator, a weight fixed in the rotator for shifting the weight center of the rotator, and stator for rotating the rotator in cooperation with the rotator permanent magnet, the speaker magnet and the speaker yoke member are fixed to the frame body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multifunctional sound apparatus having a sound generating function and a vibrating function used for portable equipment.

[0002]

2. Description of the Related Art In a conventional multifunctional sound apparatus having a sound generating function and a vibration function, a speaker magnet for generating a sound from a speaker diaphragm for generating a sound function is mounted on a rotor for generating a vibration function. It was stuck. For example, Japanese Patent Application No. 2000-2 filed by the applicant of the present invention has already filed.
No. 86414.

A conventional example of Japanese Patent Application No. 2000-286414 will be described with reference to FIGS. 5 and 6. FIG. A speaker diaphragm 707 is fixed to the cylindrical frame 701, and a voice coil 708 is fixed to the speaker diaphragm 707, and both ends of the voice coil 708 are connected to voice coil input terminals 710a and 710b. ing.
Further, a stator 800 is fixed inside the outer peripheral portion of the frame 701, and the stator 800 is
And a stator winding 802 wound around the stator yoke 801
It is composed of Both ends of the stator winding 802 are connected to stator input terminals 803a and 803b. A rotor shaft 902 is planted at the center of the frame 701,
A rotor 900 is rotatably mounted on the rotor shaft 902. The rotor 900 is fixed to a speaker magnet 704 fixed to the center of the upper surface of the rotor plate 901, and fixed to the upper surface of the speaker magnet 704. Speaker yoke 705, a ring-shaped rotor permanent magnet 903 fixed to the outer periphery of the upper surface of the rotor plate 901, and a ring-shaped side yoke 703 in contact with the inner periphery of the rotor permanent magnet 903.
And a semi-ring-shaped weight 904 fixed to the upper surface of the rotor permanent magnet 903. In addition, an acoustic cover 709 having a sound emission port 709a and protecting the speaker diaphragm 707 is fixed to the upper end surface of the frame 701.

Next, the sound generation function will be described. When a sound drive signal is input to the voice coil input terminals 710a and 710b, the voice coil 708 vibrates in the vertical direction, and the speaker diaphragm 707 vibrates and generates sound with the vertical vibration of the voice coil 708. The generated sound passes through the sound emission port 709a of the acoustic cover 709 and is emitted to the outside.

Next, the vibration function will be described. When an excitation drive signal is input to the stator input terminals 803a and 803b, the rotor 900 rotates around the rotor shaft 902. Since a half ring-shaped weight 904 is fixed to the rotor 900, the center of gravity of the rotor 900 is located at a position away from the rotor shaft 902 serving as the center of rotation. The force is applied in the horizontal direction by the centrifugal force. The frame 701 vibrates due to the force received in the rotation direction.

As described above, the structure of the conventional multifunctional sound apparatus is composed of a speaker magnet 704 for driving the speaker diaphragm 707 and a speaker magnet 70.
Speaker yoke 705 fixed to the upper surface of the speaker 4
Since the side yoke 703 facing the speaker top yoke 705 with a gap is fixed to the rotor 900, the mass of the rotor 900 is large and the moment of inertia is large, so that the starting characteristic of the motor is poor and the signal There is a drawback that the time from the input to the occurrence of vibration becomes longer and the power consumption increases. In addition, since the rotor 900 and the rotor shaft 902 slide, the rotor 900 or the rotor shaft 902 may be worn. Further, the speaker top yoke 705 and the side yoke 7
Since the position of the voice coil 708 relative to the gap between the voice coil 03 and the voice coil 708 changes unstablely, the sound quality of the sound generated from the speaker diaphragm 707 may be deteriorated.

SUMMARY OF THE INVENTION An object of the present invention is to provide a multifunctional acoustic apparatus having a vibrationally exciting function and a good sound quality sounding function.

[0007]

In order to achieve the above object, according to the present invention, there is provided a frame, a speaker diaphragm as a sounding body fixed to the frame, and a speaker diaphragm fixed to the speaker diaphragm. A voice coil that vibrates a speaker diaphragm to generate sound, a speaker magnet for driving the speaker diaphragm in cooperation with the voice coil, and a speaker yoke member that guides a magnetic flux generated by the speaker magnet to the voice coil A rotor as a vibrator, a rotor permanent magnet fixed to the rotor for driving the rotor, and a weight fixed to the rotor to shift the center of gravity of the rotor from the center of rotation. And a multifunction acoustic device having a stator that rotates the rotor in cooperation with the rotor permanent magnet,
The speaker magnet and the speaker yoke member are fixed to the frame.

The speaker yoke member has a speaker top yoke fixed to one magnetic pole surface of the speaker magnet and a magnetic flux of the other magnetic pole surface of the speaker magnet positioned at a position facing the speaker top yoke. And a speaker side yoke for guiding and supplying a magnetic field to the voice coil.

Further, the rotor is rotatably mounted on a side of the frame body opposite to a surface to which the speaker magnet is fixed.

[0010] Further, the rotor permanent magnet is closely opposed to an inner periphery of the stator and is opposed to the stator.

[0011] Further, the rotor permanent magnet is closely opposed to the outer periphery of the stator, and is opposed to the stator.

Further, the stator is constituted by a stator yoke formed in a cylindrical shape, and a stator winding wound inside a hollow cylindrical portion of the stator yoke. Things.

[0013] Further, the present invention is characterized in that the stator is constituted by a stator yoke formed in a core shape and a stator winding wound around the stator yoke.

Further, the rotor has a rotor shaft, and the frame has a bearing which fits with the rotor shaft and rotatably supports the rotor. .

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on embodiments with reference to the drawings. FIG. 1 is a main sectional view of a first embodiment according to the present invention. FIG. 2 is a cross-sectional view showing a state of a cross section taken along line AA in FIG.
FIG. 3 is a main sectional view of a second embodiment according to the present invention.
FIG. 4 is a cross-sectional view showing a state of a cross section taken along a line BB in FIG. FIG. 5 is a main sectional view of a conventional example. FIG. 6 is a cross-sectional view showing the state of the cross section taken along the line CC in FIG.

The first embodiment will be described with reference to FIGS. 1 and 2. A second frame 102 having a concave central portion is fixed to the cylindrical first frame 101 to form a frame of the entire apparatus. A speaker diaphragm 107 is fixed to the first frame 101 and the second frame 102.
A voice coil 108 is fixed to the speaker diaphragm 107, and both ends of the voice coil 108 are connected to voice coil input terminals 110a and 110b, and the voice coil input terminals 110a and 110b are connected to a control circuit. Further, a stator 200 having a stator winding 202 wound inside a hollow cylindrical portion of a stator yoke 201 formed in a hollow cylindrical shape is disposed and fixed to the outer peripheral portion of the first frame body 101. ing. Both ends of the stator winding 202 are connected to stator input terminals 203a and 203b, and the stator input terminals 203a and 203b are connected to a control circuit.

A bearing 106 is provided at the center of the concave portion at the center of the second frame 102. A cylindrical speaker magnet 104 is fixed so as to surround the bearing 106, and a speaker top yoke 105 is fixed to the upper surface of the speaker magnet 104. A cylindrical speaker side yoke 103 is fixed to the outer peripheral portion of the concave portion of the second frame 102, and the speaker side yoke 103 and the speaker top yoke 105 are configured so as to sandwich the voice coil 108 with a gap. The magnetic flux generated by the speaker magnet 104 is guided to supply a magnetic field to the voice coil 108.

A rotor shaft 302 is rotatably mounted on the bearing 106. The rotor shaft 302 is fixed to the center of the upper surface of a rotor plate 301 formed in a tea tube shape. A cylindrical rotor permanent magnet 303 is fixed to the outer periphery of the rotor plate 301, and a semi-ring weight 304 is fixed to the lower surface of the rotor permanent magnet 303.
1, a rotor shaft 302, a rotor permanent magnet 303, and a weight 304 constitute a rotor 300. An acoustic cover 109 for protecting the speaker diaphragm 107 is provided on the upper end surface of the first frame 101.
Is fixed.

As described above, in the first embodiment of the present invention, the rotor 300 includes a rotor plate 301, a rotor shaft 302, and a rotor permanent magnet 30 for rotating the rotor 300.
3 and weight 304 for vibrating rotor 300
The rotor 300 includes a speaker magnet 704 for driving a speaker diaphragm 707 and a speaker top yoke 7 as in the conventional example described above.
05, since the speaker yoke member such as the speaker side yoke 703 is not mounted, the mass is small, and the moment of inertia is small, so that the starting characteristics of the motor are excellent. Power consumption is reduced. A rotor shaft 302 is fixed to the rotor plate 301, and the rotor shaft 3 is fixed to the second frame 102.
The bearing 106 that rotatably supports the rotator 300 is fixedly mounted. Therefore, the bearing 106 or the rotor shaft 302 is less likely to be worn due to sliding between the bearing 106 and the rotor shaft 302, and even if worn, the gap between the speaker top yoke 105 and the speaker side yoke 103 is reduced. The relative position of the voice coil 108 does not change unstably, and the sound quality of the sound generated from the speaker diaphragm 107 does not deteriorate.

The second embodiment will be described with reference to FIGS. 3 and 4. A second frame 402 having a concave central portion is fixed to the funnel-shaped first frame 401.
The speaker diaphragm 4 is provided on the frame 401 and the second frame 402.
07 is fixed. The voice coil 408 is fixed to the speaker diaphragm 407 and the voice coil 4
08 are voice coil input terminals 410a, 410b
Are connected to the voice coil input terminals 410a,
10b is connected to a control circuit (not shown). A stator 500 in which a stator winding 502 is wound around a stator yoke 501 formed in a core shape is arranged and fixed to the outer peripheral portion of the concave portion of the second frame 402. Both ends of the stator winding 502 are connected to stator input terminals 503a and 503b, and the stator input terminals 503a and 503b are connected to a control circuit (not shown).

A bearing 406 is provided at the center of the concave portion at the center of the second frame 402. A cylindrical speaker magnet 404 is fixed to surround the bearing 406, and a speaker top yoke 405 is fixed to the upper surface of the speaker magnet 404. A cylindrical speaker side yoke 403 is fixed to the inner peripheral portion of the concave portion of the second frame 402, and the speaker side yoke 403 and the speaker top yoke 405 are configured to sandwich the voice coil 408 with a gap. . The magnetic flux generated by the speaker magnet 404 is guided to supply a magnetic field to the voice coil 408.

A rotor shaft 602 is rotatably mounted on the bearing 406. The rotor shaft 602 is fixed to the center of the upper surface of a rotor plate 601 formed in a flat tea tube shape. A cylindrical rotor permanent magnet 603 is fixed to the inner periphery of the rotor plate 601, and a semi-ring weight 604 is fixed to the outer periphery of the rotor plate 601, and the rotor plate 601 and the rotor shaft 602 are fixed. , Rotor permanent magnet 603, and weight 604
Thus, the rotor 600 is configured. Further, an acoustic cover 409 for protecting the speaker diaphragm 407 is fixed to the upper end surface of the first frame 401, having a sound emission port 409 a.

The stator 200 in which the stator winding 202 is wound inside the hollow cylindrical portion of the stator yoke 201 formed in a hollow cylindrical shape in the first embodiment is rotated as in the second embodiment. The stator 500 in which the stator winding 502 is wound around the core-shaped stator yoke 501 in the second embodiment can also be disposed inside the stator 300 as in the first embodiment. It is also possible to dispose outside the rotor 300.

As described above, in the second embodiment of the present invention, similarly to the first embodiment, the rotor 600
A rotor plate 601, a rotor shaft 602, a rotor permanent magnet 603, and a rotor 6 for rotating the rotor 600
00 is made up of only a weight 604 for vibrating 00, and the rotor 600 has a speaker magnet 70 for driving a speaker diaphragm 707, as in the above-described conventional example.
4, speaker top yoke 705, side yoke 7
Since no yoke member such as 03 is mounted, the mass is small, and the moment of inertia is small, so that the starting characteristics of the motor are excellent. Become. A rotor shaft 602 is fixed to the rotor plate 601 and the second frame 4
A bearing 406 that fits with the rotor shaft 602 and rotatably supports the rotor 600 is fixed to 02. Therefore, the bearing 406 or the rotor shaft 602 is hardly worn due to the sliding between the bearing 406 and the rotor shaft 602, and even if worn, the gap between the speaker top yoke 405 and the speaker side yoke 403 and the voice are reduced. The relative position of the coil 408 does not change unstably, and the sound quality of the sound generated from the speaker diaphragm 407 does not deteriorate.

As described above, in the present invention, the rotor 3
00, 600 to the first frames 101, 401, and the second
Since the speaker magnets 104 and 404 of the frame composed of the frames 102 and 402 are rotatably mounted on the opposite side of the surface to which the speaker magnets 104 and 404 are fixed, the speaker magnets 104 and 40 are provided.
4 and a speaker yoke composed of speaker side yokes 103 and 403 and speaker top yokes 105 and 405 can be fixed to the frame.

[0026]

As described above, according to the present invention,
The rotors 300 and 600 include rotor plates 301 and 601, and a rotor shaft 30 for rotating the rotors 300 and 600.
2, 602, rotor permanent magnets 303, 603, and
Weights 304, 6 for vibrating rotors 300, 600
The rotor 900 includes a speaker magnet 704 for driving a speaker diaphragm 707 and yoke members such as a speaker top yoke 705 and a side yoke 703 as in the conventional example described above. As a result, since the mass is small and the moment of inertia is small, the starting characteristics of the motor are excellent, and the time from the input of a signal to the occurrence of vibration is shortened and the power consumption is reduced.

The bearings 1 are mounted on the second frames 102 and 402.
06 and 406 are fixed, the rotor shafts 302 and 602 are fixed to the rotors 300 and 600, and the rotor shafts 302 and 602 are rotatably fitted to the bearings 106 and 406. The bearings 106, 406 and the rotor shaft 302,
The bearings 106 and 406 or the rotor shafts 302 and 602 do not wear due to sliding between the bearings 602 and 602. The sliding between the bearings 106 and 406 and the rotor shafts 302 and 602 causes the bearings 106 and 406 or the rotor shaft 3 to slide.
02 and 602 are worn, the speaker top yoke 10
The relative positions of the gaps between the voice coils 108 and 408 and the gaps between the speaker coils 5 and 405 and the speaker side yokes 103 and 403 do not change in an unstable manner.
There is no deterioration in the sound quality of the sound produced from the sound 7.

[Brief description of the drawings]

FIG. 1 is a main cross-sectional view of a first embodiment according to the present invention.

FIG. 2 is a sectional view showing a state of a section taken along line AA in FIG. 1;

FIG. 3 is a main sectional view of a second embodiment according to the present invention.

FIG. 4 is a sectional view showing a state of a section taken along line BB in FIG. 3;

FIG. 5 is a main sectional view of a conventional example.

FIG. 6 is a sectional view showing a state of a section taken along line CC in FIG. 5;

[Explanation of symbols]

101, 401 First frame 102, 402 Second frame 103, 403 Speaker side yoke 104, 404 Speaker magnet 105, 405 Speaker top yoke 106, 406 Bearing 107, 407 Speaker diaphragm 108, 408 Voice coil 109, 409 Sound Covers 109a, 409a Sound outlets 110a, 110b, 410a, 410b Voice coil input terminals 200, 500 Stator 201, 501 Stator yoke 202, 502 Stator windings 203a, 203b, 503a, 503b Stator input terminals 300, 600 Rotor 301, 601 Rotor plate 302, 602 Rotor shaft 303, 603 Rotor permanent magnet 304, 604 Weight

Continuation of the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) H04R 1/00 310 H04R 1/00 310G 1/02 102 1/02 102Z 9/02 102 9/02 102A 102E 9/10 9/10 F term (reference) 5D012 BB03 BB04 CA09 FA02 GA04 5D017 AA11 AE22 5D107 AA20 BB08 CC09 DD09 5H002 AA00 AB05 AE08 5H621 BB07 GA01 GA02 HH01 JK08 JK15 JK17

Claims (8)

[Claims] 1. A frame, a speaker diaphragm as a sounding body fixed to the frame, a voice coil fixed to the speaker diaphragm to vibrate the speaker diaphragm to generate sound,
A speaker magnet for driving the speaker diaphragm in cooperation with the voice coil, a speaker yoke member for guiding a magnetic flux generated by the speaker magnet to the voice coil,
A rotor that is a vibrator, a rotor permanent magnet that is fixed to the rotor and drives the rotor, and a weight that is fixed to the rotor and shifts the center of gravity of the rotor from the center of rotation,
In a multi-function audio device including a rotor permanent magnet and a stator that rotates the rotor in cooperation with each other, the speaker magnet and the speaker yoke member are fixed to the frame. Functional sound device. 2. The multifunctional audio device according to claim 1, wherein the rotor is rotatably mounted on a side of the frame body opposite to a surface to which the speaker magnet is fixed. 3. The speaker yoke member includes a speaker top yoke fixed to one magnetic pole surface of the speaker magnet, and a magnetic flux on the other magnetic pole surface of the speaker magnet positioned at a position facing the speaker top yoke. 2. The multifunctional audio apparatus according to claim 1, further comprising a speaker side yoke for guiding and supplying a magnetic field to the voice coil. 4. The multi-function acoustic device according to claim 1, wherein the rotor permanent magnet is opposed to an inner periphery of the stator in close proximity. 5. The multi-function acoustic device according to claim 1, wherein the rotor permanent magnet is closely opposed to an outer periphery of the stator. 6. The stator according to claim 1, wherein the stator comprises a stator yoke formed in a hollow cylindrical shape, and a stator winding wound inside a hollow cylindrical portion of the stator yoke. The multi-functional sound device according to claim 4. 7. The stator according to claim 4, wherein the stator includes a stator yoke formed in a core shape and a stator winding wound around the stator yoke. 5. The multifunctional acoustic device according to 5. 8. The apparatus according to claim 1, wherein the rotor has a rotor shaft, and the frame has a bearing which fits with the rotor shaft and rotatably supports the rotor. 8. The multifunctional sound device according to any one of claims 7 to 7.