JP2002186088A - Speaker unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a speaker unit that can reproduce a received sound signal with fidelity. SOLUTION: The speaker unit that the inside of a diaphragm is driven by a voice coil, is provided with a center support fixed to the tip of a center pole and extended in a front direction, an edge fixed frame fixed to the tip of the center support and formed to spread toward the outside of the front, has an edge fixed part and sound emission holes, and a damper fixing component fixed to an upper side of a plate of a magnetic circuit section to which a damper is fixed. The diaphragm is suspended by the edge fixed to the edge fixing frame and the damper fixed to the damper fixing component and a mount bracket formed to surround the outer circumferential part of a vibration section. The speaker unit is characterized in that it is fitted to an opposed member by using a mount bracket that is formed to surround a vibration section and the outer circumferential part of the magnetic circuit section.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker unit, and more particularly to a speaker unit structure suitable for faithfully reproducing an input audio signal.

[0002]

2. Description of the Related Art A conventional speaker unit will be described with reference to FIG.

FIG. 3 is a front sectional view showing a schematic configuration of a conventional speaker unit.

[0004] Reference numeral 100 denotes a speaker unit used for audio equipment of an electronic apparatus, which comprises a speaker frame 110, a vibrating section, a magnetic circuit section, and the like.

The speaker frame 110 is a member for holding a vibrating portion, a magnetic circuit portion, and the like. The speaker frame 110 has a shape close to a truncated cone, and requires a hole or the like for adjusting a back pressure generated by vibration of the diaphragm 103. It is opened in the place. A diaphragm 103 is provided in an opening inside the speaker frame 110.
An adhesive surface 111 of the edge 105 adhered to the opening (upper side in the drawing) and an adhesive surface 112 to which the outer peripheral portion of the damper 106 adhered to the outer periphery of the voice coil bobbin are adhered and fixed. A magnetic circuit section is fixed to the rear end. A plated steel plate, a resin member, or the like is used as the material of the speaker frame 110. The plated steel plate is formed by pressing, and the resin member is formed by resin molding.

The vibrating part includes a diaphragm 103, a voice coil 1
04, an edge 105, a damper 106, and the like.

The diaphragm 103 radiates a vibration converted from an electric input signal input to the voice coil 104 into a mechanical vibration as a sound corresponding to the input signal, and has a truncated cone shape. Pulp, resin, or the like is used as a material of the diaphragm 103. The center of the diaphragm 103 is adhesively fixed to the upper end of the cylinder of the voice coil bobbin, the outer peripheral part is adhesively fixed to the inner peripheral part of the edge 105, and the outer peripheral part of the edge 105 is an adhesive surface of the opening of the speaker frame 110 11
1 is fixedly adhered. Further, the outer periphery of the voice coil bobbin to which the diaphragm 103 is fixed is adhesively fixed to the inner peripheral portion of the damper 106, and the outer peripheral portion of the damper 106 is adhesively fixed to the adhesive surface 112 of the speaker frame 110. Therefore, the diaphragm 103 is connected to the edge 105 and the damper 10.
6 is held by the speaker frame 110 in a suspended state.

The damper 106 is a support member that supports the diaphragm 103 so that the diaphragm 103 moves following the vibration of the voice coil bobbin, and has a ring shape and a wavy cross section. As the material of the damper 106, a resin, a mixed spin, or the like is used.

The edge 105 is a supporting member for the diaphragm 103 and has a thin annular shape. The material of the edge 105 is formed by molding using a urethane material or the like.

The magnetic circuit section includes a yoke 107, a magnet 108, a plate 109, and the like.

[0011]

However, in the above-described speaker unit 100, the vibration of the diaphragm 103 is transmitted to the speaker frame 110, and the speaker frame 110 resonates. Then, the vibration is transmitted to the edge 105 supporting the diaphragm 103, and the sound reflected from the speaker frame 110 may adversely affect the diaphragm 103 and deteriorate the sound quality.

Also, the output sound from the diaphragm 103 may be reflected by the speaker frame 110 and transmitted to the diaphragm 103 to adversely affect the reproduced sound.

In addition, when the speaker unit 100 is mounted on a baffle surface or the like, the speaker frame 110
In this case, the heaviest magnetic circuit portion of the speaker unit 100 floats in the air, and is liable to be adversely affected by vibration because it is away from the fixing point.

An object of the present invention is to solve the above-mentioned problem and to provide a speaker unit capable of faithfully reproducing an input audio signal.

[0015]

According to the present invention, there is provided a speaker unit in which the inside of a diaphragm is driven by a voice coil, and an edge fixing frame formed so as to extend from a center pole to a front outside. With
An outer peripheral portion of the diaphragm is supported by the edge fixing frame.

The side surface of the diaphragm in the edge fixing frame is a smooth curved surface.

Further, at least a portion near the connection portion with the center pole in the edge fixing frame is formed of a non-magnetic material.

Further, a mounting bracket is fixed to the magnetic circuit portion of the speaker unit, and the bracket and the edge fixing frame are provided between the bracket and the edge fixing frame via a cushion material. is there.

Also, a cushion material is interposed between the magnetic circuit portion and the bracket.

Further, a tweeter unit is fixed to the front surface of the edge fixing frame.

[0021]

FIG. 1 shows a first embodiment of the present invention.
This will be described with reference to FIG.

FIGS. 1A and 1B are schematic structural views showing a speaker unit according to a first embodiment of the present invention. FIG. 1A is a front sectional view, FIG. It is an arrow view (mounting bracket).

Reference numeral 10 denotes a speaker unit used for audio equipment of electronic equipment.
It is composed of an edge fixing frame 40, a damper fixing component 47, a magnetic circuit section 50, and the like.

The mounting bracket 20 is a member for holding the magnetic circuit portion 50, the vibrating portion 30, and the like, has a shape close to a truncated cone, extends outward in the opening, and extends to the mating member 15 (for example, In the case of vehicle audio equipment, there is a mounting portion 21 for mounting on a vehicle body, or on a baffle plate or the like in a speaker box), and a plurality of mounting holes 22 (four in this example) are formed in the mounting portion 21. Further, an adhesive surface 23 for adhesively fixing the sound seal member 24 is formed in the opening. A hole 26 for adjusting the back pressure generated by the vibration of the diaphragm 31 is formed in the truncated cone portion (body portion).
Are opened where necessary. Mounting bracket 20
The magnetic circuit portion 50 is fixed inside the bottom portion 25 of the device, and the vibrating portion 30 connected to the magnetic circuit portion 50 is also held. A plated steel plate, a resin member, an aluminum die-cast member, or the like is used as a material of the mounting bracket 20, and a plated steel plate is formed by press working, and a resin member is formed by resin molding, aluminum die casting, or the like.

The vibrating section 30 includes a diaphragm 31, a voice coil 32, an edge 35, a damper 36, and the like.

The diaphragm 31 radiates a vibration converted from an electric input signal input to the voice coil 32 into a mechanical vibration as a sound corresponding to the input signal, and has a substantially truncated conical shape. Is made of pulp or resin.
The center of the diaphragm 31 is adhesively fixed to the upper end of the cylinder of the voice coil bobbin 33, the outer peripheral portion is adhesively fixed to the inner peripheral portion of the edge 35, and the outer peripheral portion of the edge 35 is an edge adhesive portion of the edge fixing frame 40 41 is adhered and fixed. The outer periphery of the voice coil bobbin 33 to which the diaphragm 31 is fixed is adhesively fixed to the inner peripheral portion of the damper 36, and the outer peripheral portion of the damper 36 is adhesively fixed to the adhesive surface of the mounting bracket 20. Therefore, the diaphragm 31 is held by the mounting bracket 20 in a suspended state by the edge 35 and the damper 36.

The edge 35 has an annular shape and is a support member that adheres to the opening edge of the diaphragm 31 to support the diaphragm 31. The material of the edge 35 is a thin urethane material or the like and is formed. Formed by

The damper 36 is a support member for supporting the diaphragm 31 so that the diaphragm 31 adhered and fixed to the voice coil bobbin 33 moves following the vibration of the voice coil bobbin 33. The damper 36 has an annular shape and a wavy section. Is formed.
As the material of the damper 36, a resin, a blend, or the like is used.

The edge fixing frame 40 is a member for holding the opening side of the diaphragm 31. The edge fixing frame 40 has an edge bonding portion 41 formed on the lower surface in the figure of the annular plate, a mounting portion 42 formed in the center portion, and a front portion (shown in the figure). A plurality of stays 43 (in this example, four places) curved upward are formed integrally. Attachment part 42 is diaphragm 3
In order to obtain the spread of the sound generated from the
A taper or R extending from the front to the front is provided, and the side surface of the diaphragm 31 of the edge fixing frame 40 is a smooth curved surface.

The edge fixing frame 40 is a cylindrical center support 4 fixed to the tip of the center pole 52 of the yoke 51 of the magnetic circuit section 50 by an adhesive or a screw.
5, the edge fixing frame 40 is provided in front of the diaphragm 31 because the edge fixing frame 40 is fixed by an adhesive or a screw. A resin material is used as the material of the edge fixing frame 40 and is formed by resin molding. The center support 45 is made of a non-magnetic material such as an aluminum material or a stainless steel material, and is formed by turning or the like.

The damper fixing part 47 is a member for holding the outer peripheral side of the damper 36 fixed to the voice coil bobbin 33, and has an annular bottom 48 adhered to the upper surface of the plate 54 of the magnetic circuit section 50, and an outer periphery of the bottom 48. An annular damper fixing surface 49 having a step in the front direction and extending outward is formed. The material of the damper fixing part 47 is formed by press working using a plated steel plate or the like.

The magnetic circuit section 50 includes a yoke 51, a magnet 53, a plate 54, and the like.

Next, an example of assembling the speaker unit will be described.

The center support 45 is fixed to the front end surface of the center pole 52 of the yoke 51 of the magnetic circuit unit 50 assembled in advance by an adhesive or a screw. Next, the central portion of the diaphragm 31 is adhesively fixed to the upper end portion of the voice coil bobbin 33, and an edge 35
Adhesively fix the inner peripheral part of. Voice coil bobbin 3
The inner peripheral portion of the damper 36 is bonded and fixed in the middle of 3. next,
The outer peripheral portion of the edge 35 is bonded and fixed to the edge bonding portion 41 of the edge fixing frame 40. Next, the voice coil bobbin 33 integrated with the edge fixing frame 40 is inserted into the center support 45 fixed earlier, and the mounting surface 44 of the edge fixing frame 40 is attached to the front end surface of the center support 45 with an adhesive or a screw. Fix it. Next, the outer peripheral edge of the damper 36 is bonded and fixed to the damper fixing surface 49 of the damper fixing component 47. Next, an anti-vibration sheet 27 is placed inside the bottom 25 of the mounting bracket 20, and the sound seal member 2 is placed in the opening of the mounting bracket 20.
4 (for example, an eptsealer or a vibration absorbing material) is bonded and fixed. Next, the end surface (the lower surface in the figure) of the yoke 51 of the magnetic circuit portion 50 is matched with the vibration-proof sheet 27 on the bottom portion 25 of the mounting bracket 20 and fixed with an adhesive or a screw. In this state, the diaphragm 31 is suspended from the edge fixing frame 40 by the edge 35 and the damper 36. The sound sealing member 24 bonded to the lower surface of the edge fixing frame 40 and the bonding surface 23 of the opening of the mounting bracket 20 is pressed against the front of the diaphragm 31 so that the sound generated behind the diaphragm 31 can be blocked. Let me.

As described above, according to the speaker unit 10 according to the first embodiment of the present invention, the diaphragm 31
The edge 35 supporting the opening of the diaphragm 31 is fixed to the edge fixing frame 40, and the damper 36 supporting the voice coil bobbin 33 to which the center part of the diaphragm 31 is adhered is fixed to the damper fixing part 47. Vibration of the component parts (particularly, the mounting bracket 20) is less likely to be transmitted, and the feeling of spreading in the middle and high ranges is improved, and the sound quality can be improved.

Since the edge fixing frame 40, the damper fixing part 47 and the mounting bracket 20 are separated,
Transmission of unnecessary resonance (resonance due to the piston motion of the speaker and resonance from the vehicle side) from the mounting bracket 20 and the vehicle side can be reduced, so that sound quality can be improved.

Next, a second embodiment of the present invention will be described with reference to FIG.

FIG. 2 is a schematic configuration diagram showing a speaker unit according to a second embodiment of the present invention, in which (a) is a front sectional view, and (b) is a schematic enlarged sectional view of a tweeter unit. The second embodiment is a partial modification of the first embodiment, and the other components are substantially the same as those of the first embodiment. Is omitted.

Numeral 11 designates 2 used for audio equipment of electronic equipment.
Speaker unit with a way structure, mounting bracket 2
0, vibrating part 30, edge fixing frame 60, damper fixing part 4
7, a tweeter unit 70, a magnetic circuit unit 50, and the like.

The edge fixing frame 60 is a member for holding the opening side of the diaphragm 31. The edge fixing portion 60 is formed on the lower surface of the annular plate in the drawing, and the tweeter unit 7 is provided on the front surface at the center.
An attachment part 42 having a zero attachment part 61 is formed integrally with a plurality of stays 43 (four places in this example) curved forward (upward in the figure). The mounting portion 42 is provided with a taper or R extending in the front direction from the mounting surface 44 in order to obtain the spread of the sound generated from the diaphragm 31, and the side surface of the diaphragm 31 of the edge fixing frame 40 has a smooth curved surface. Has become.

The edge fixing frame 60 is a cylindrical center support 4 fixed to the tip of the center pole 52 of the yoke 51 of the magnetic circuit section 50 by an adhesive or a screw.
5, the edge fixing frame 60 is provided in front of the diaphragm 31 because it is fixed by an adhesive or a screw.

The tweeter unit 70 is a loudspeaker for a high frequency range, and is composed of a speaker frame 71, a vibrating section 74, a magnetic circuit section 80, a front plate 84, and the like, and is bonded and fixed to a mounting section 61 of the edge fixing frame 60. You.

The speaker frame 71 is a member for holding the vibrating portion and the magnetic circuit portion 80, and has a shape close to a truncated cone. The opening inside the speaker frame 71 has an opening (shown in FIG. The bonding surface 72 of the edge 77 bonded to the upper side and the bonding surface 73 to which the outer peripheral portion of the damper 78 bonded to the outer circumference of the voice coil bobbin is bonded and fixed.
Are formed, and a magnetic circuit section 80 is fixed to the rear end of the speaker frame 71.

The vibrating section 74 includes a diaphragm 75, a voice coil 76, an edge 77, a damper 78 and the like.

The diaphragm 75 radiates vibration converted from an electric input signal input to the voice coil 76 into mechanical vibration as sound corresponding to the input signal, and has a truncated cone shape. Pulp, resin, or the like is used as a material of the diaphragm 75. The center of the diaphragm 75 is adhesively fixed to the upper end of the cylinder of the voice coil bobbin.
7, and an outer peripheral portion of the edge 77 is adhesively fixed to an adhesive surface 72 of an opening of the speaker frame 71. The outer periphery of the voice coil bobbin to which the diaphragm 75 is fixed is adhesively fixed to the inner peripheral portion of the damper 78, and the outer peripheral portion of the damper 78 is adhesively fixed to the adhesive surface 73 of the speaker frame 71. Therefore, the diaphragm 75 is held by the speaker frame 71 in a suspended state by the edge 77 and the damper 78.

The magnetic circuit section 80 includes a yoke 81, a magnet 82, a plate 83, and the like.

The front plate 84 has a disk shape and has a hole for emitting sound. It is bonded and fixed on the bonding portion of the outer peripheral edge of the edge 77 bonded to the diaphragm 75. A resin member is used as the material of the front plate 84 and is formed by molding.

As described above, according to the loudspeaker unit 11 according to the second embodiment of the present invention, in addition to the same effects as those of the first embodiment, the loudspeaker unit 11 is provided inside the front surface of the central portion of the edge fixing frame 60. By arranging the eta unit 70, the sound quality of the speaker unit 11 can be improved because it does not interfere with the low / middle sound generated from the diaphragm 31 and can prevent the deterioration of the sound quality in the middle and low frequencies. Can be achieved.

[0049]

As described above, according to the present invention, it is possible to provide a speaker unit capable of faithfully reproducing a sound based on an input audio signal.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram illustrating a speaker unit according to a first embodiment of the present invention.

FIG. 2 is a schematic configuration diagram illustrating a speaker unit according to a second embodiment of the present invention.

FIG. 3 is a front sectional view showing a schematic configuration of a conventional speaker unit.

[Explanation of symbols]

 10, 71 · · · speaker unit 20 · · · mounting bracket 21 · · · mounting part 22 · · · mounting hole 23, 72, 73 · · · bonding surface 24 · · sound sealing member 25, 48 · · · bottom 26 · · · hole 27 · · ·. Anti-vibration sheet 30 ・ ・ Vibration part 31,75 ・ ・ Vibration plate 32,76 ・ ・ Voice coil 33 ・ ・ Voice coil bobbin 35,77 ・ ・ Edge 36,78 ・ ・ Damper 40 ・ ・ Edge fixing frame 41 ・ ・ Edge bonding Part 42 Mounting part 43 Stay 44 Mounting surface 45 Center support 47 Damper fixing part 49 Damper fixing surface 50, 80 Magnetic circuit part 51, 81 Yoke 52 Center・ Pole 53,82 ・ ・ Magnet 54,83 ・ ・ Plate 70 ・ ・ Tweeter unit 74 ・ ・ Adhesive part 84 ・ ・ Front plate

Claims (6)

[Claims] 1. A speaker unit in which the inside of a diaphragm is driven by a voice coil, comprising: an edge fixing frame formed so as to extend from a center pole to a front outside; a peripheral portion of the diaphragm is attached to the edge fixing frame. A speaker unit that is supported. 2. The speaker unit according to claim 1, wherein a side surface of the diaphragm in the edge fixing frame has a smooth curved surface. 3. The non-magnetic material according to claim 1, wherein at least a portion of the edge fixing frame near a connection with the center pole is formed.
The speaker unit according to the above. 4. A mounting bracket is fixed to the magnetic circuit portion of the speaker unit, and the bracket and the edge fixing frame are provided between the bracket and the edge fixing frame via a cushion material. The speaker unit according to claim 1, 2, or 3. 5. The speaker unit according to claim 1, wherein a cushion material is interposed between the magnetic circuit portion and the bracket. 6. The speaker unit according to claim 1, wherein a tweeter unit is fixed to a front surface of the edge fixing frame.