JP2598980Y2 - Speaker - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker, and more particularly, to a speaker mainly used in a vehicle.

[0002]

2. Description of the Related Art FIG. 7 is a longitudinal sectional view schematically showing a conventional loudspeaker, in which 52 indicates a loudspeaker frame. One end of a generally inverted conical speaker frame 52 made of an iron plate or the like is fixed to the upper surface of a ring-shaped metal plate 53, and the speaker is fixed to the vehicle body on the outer periphery of the other end of the speaker frame 52. For this purpose, a flat annular mounting surface 50 is provided. The mounting surface 50 is provided with a screw hole (not shown). A cone 56 is stretched inside the conical wall of the speaker frame 52, and the cone 56 is fixed to the upper surface of the plate 53 via the damper 60 and the speaker frame 52 at one end of the cone 56. On the other hand, the other end of the cone 56 is adhered to the mounting surface 50 via an edge portion 51 which is rounded and has a margin. Cross carbon is used as the material of the cone 56. The lower portion of the plate 53 has a bottom yoke 5 with an annular magnet 54 interposed therebetween.
5, a bottom 8 having a substantially cylindrical shape in appearance including a plate 53, a magnet 54 and a bottom yoke 55 is formed. A hollow gap 5 around the central axis of the bottom 8
8 is provided, and a cylindrical voice coil 57 extends from the cone 56 in the gap 58, and the voice coil 57 is configured to vibrate freely in the gap 58. A center cap 59 is provided above the voice coil 57, and a center cap 5 is provided.
9 prevents dust and the like from entering the gap 58.

When the speaker is energized, the voice coil 57 vibrates due to the magnetic flux appearing in the gap 58, and the vibration moves the cone 56 to generate sound.

When the speaker is fixed to the vehicle body, the bottom 8 is inserted into a mounting hole provided in the vehicle body until the mounting surface 50 contacts the horizontal mounting surface of the vehicle body.
Is screwed to the vehicle body using the screw holes provided in the vehicle.

[0005]

In the above speaker, when the speaker is fixed to the vehicle body, the speaker is fixed to the vehicle body via the speaker frame 52. For this reason, depending on the shape of the speaker and the location where the speaker is fixed on the vehicle body, the speaker frame 52 may hit the vehicle body-side member, causing a state where the speaker cannot be fixed. In order to avoid such a situation, speakers of various shapes were manufactured according to various types of vehicles, or mounting holes were provided in the vehicle body according to the shapes of the speakers. . This state was not changed even if the height and angle of the cone 56 were changed, and it was still difficult to fix the speaker to a vehicle body having a different specification. The gap 58
The magnetic flux appearing on the speaker frame 52 leaks to the vehicle body side through the speaker frame 52, so that the speaker cannot function efficiently.

The present invention has been made in view of such problems, and provides a speaker which can be easily fixed to a wide range of vehicles without depending on a fixing place, and which can reduce magnetic flux leakage. It is intended to be.

[0007]

According to the present invention, there is provided a loudspeaker in which a magnet and a plate are fixed to a bottom yoke, and a voice coil and a cone are fixed to the plate via a damper. An outer peripheral portion having a mounting surface on which the entire outer peripheral portion of the cone is fixed , and a spacer having a connection portion with a center support at a central portion, wherein the spacer and the bottom yoke are provided with the spacer. It is characterized by being fixed via a center support (1).

[0008] loudspeaker according to the present invention, the magnet and the plate is fixed to the bottom yoke, the speaker voice coil and cone are fixed through the damper to the plate, the outer peripheral portion the entire periphery of the cone is fixed A tweeter base is fixed to an annular spacer having a mounting surface, a center support portion is formed at the center of the tweeter base, and the center support portion is screwed to the bottom yoke. (2).

[0009]

According to the speaker described in (1), the magnet and the plate are fixed to the bottom yoke, and one end of the cone is fixed to the plate via the damper together with the voice coil. Moreover, the spacer having the connection portion with the center support at the center and the bottom yoke are fixed via the center support, and the other end of the cone is provided on the outer peripheral portion of the spacer. Of the corn
The entire circumference of the outer peripheral portion is fixed to the mounting surface, and a speaker frame that was conventionally required for fixing a speaker to a vehicle body is omitted. The function of the speaker frame is the spacer and the center support. Has been fulfilled. Therefore, a situation in which the speaker frame does not interfere with the speaker from being fixed to the vehicle body does not occur, and the speaker frame can be easily fixed to a wide variety of vehicles having different specifications without depending on the fixing place. Speaker that reduces leakage to the speaker.

According to the speaker described in (2), the magnet and the plate are fixed to the bottom yoke, and one end of the cone is fixed to the plate together with the voice coil via the damper. Have been. Further, the center support portion is formed at a center portion of the tweeter base to which the spacer is fixed, the center support portion is screwed to the bottom yoke, and the other end side of the cone is the outer peripheral portion of the spacer. The entire circumference of the cone provided at
It is fixed to the mounting surface to be. Conventionally, a speaker frame required for fixing a speaker to a vehicle body is omitted, and the function of the speaker frame is fulfilled by the spacer and the center support portion. Therefore, a situation in which the speaker frame does not interfere with the speaker from being fixed to the vehicle body does not occur, and the speaker frame can be easily fixed to a wide variety of vehicles having different specifications without depending on the fixing place. Speaker that reduces leakage to the speaker.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a speaker according to the present invention. Note that components having the same functions as those of the conventional example are denoted by the same reference numerals.

FIGS. 1 and 2 are a longitudinal sectional view and a plan view, respectively, schematically showing a speaker according to a first embodiment.

In FIG. 1, reference numeral 2 denotes a spacer. The spacer 2 is formed to include an annular portion 3 and a band portion 6, and the lower portion of the outer periphery of the annular portion 3 has a substantially L-shaped cross section. Outer part 7
Are bent. Cone 56 mounting surface 50
Is provided on the flat bottom surface of the outer peripheral portion 7. Screw holes 13 vertically penetrating the outer peripheral portion 7 are provided at four symmetrical positions on both sides of the annular portion 3. A band 6 is provided at a portion corresponding to the diameter of the annular portion 3, and a connecting portion 4 to which a columnar resin support 1 is screwed is provided below the center of the band 6. The other end 1 of the center support 1
A screw is cut inside 5. Center support 1
At the center of the upper surface of a bottom yoke 55 connected to the lower part of the column, a column 9 is projected, and the other end 15 of the center support 1 is fixed to the bottom yoke 55 by a nut 10 embedded in the bottom of the column 9. Have been. A small metal piece stopper 11 is fixed to the lower portion of the center support 1. When the center support 1 is fixed to the bottom yoke 55, the upper surface of the support 9 contacts the lower surface of the stopper 11. The structure is such that the vibration of the vehicle body is absorbed by the stopper 11 and transmitted to the cone 56 described below via the center support 1. An annular magnet 54 is fixed on the upper surface of the outer peripheral portion of the bottom yoke 55, and an annular plate 53 is fixed on the upper surface of the magnet 54. The bottom yoke 55, the magnet 54 and the plate 53 are included. Thus, a substantially cylindrical bottom 8 is formed. Inside the bottom 8 is formed a generally cylindrical hollow gap 58. Cone 5
6 is fixed to the upper surface of the plate 53 via a damper 60, while the other end of the cone 56 is attached to the mounting surface 50 via an edge portion 51 which is bent to give a margin. Glued. Cone 5 in gap 58
A cylindrical voice coil 57 extending from 6 is provided, and the voice coil 57 can freely vibrate in the gap 58. A center cap 59 is provided above the voice coil 57, and the center cap 59 prevents dust and the like from entering the gap 58.

To assemble the speaker according to the first embodiment, first, the other end 15 is inserted into the support 9, and the center support 1 is rotated by rotating the center support 1 until the other end 15 reaches the bottom of the nut 10. It is fixed to the bottom yoke 55. Then, the connection part 4 is screwed to the center support 1, and the cone 56 is fixed to the plate 53 and the mounting surface 50.

When the speaker according to the first embodiment is energized, the voice coil 57 vibrates due to the magnetic flux appearing in the gap 58, and the vibration moves the cone 56 to generate sound.

In order to fix the speaker according to the first embodiment to the vehicle body, the speaker bottom portion 8 is inserted into a mounting hole provided in the vehicle body, the mounting surface 50 is brought into contact with the vehicle body wall, and the speaker is screwed using the screw hole 13. Screw it into the car body.

As described above, in the speaker according to the first embodiment,
Since the speaker frame, which has conventionally hindered the fixing of the speaker to the vehicle body, is not required, resonance of the cone 56 due to the vibration of the vehicle body can be almost eliminated, and the speaker can be easily mounted on a vehicle body having a different specification. Can be fixed. Even if it is necessary to change the height or angle of the cone 56 in fixing the speaker to the vehicle body, it is sufficient to simply replace the center support 1, and since the center support 1 is a non-magnetic material, the gap 58 Since the leakage of the magnetic flux appearing on the vehicle body side is reduced as compared with the conventional case, the size and weight of the magnet 54 can be reduced.
The speaker can function more efficiently.

FIGS. 3 and 4 are a longitudinal sectional view and a plan view, respectively, schematically showing the speaker according to the second embodiment. The speaker according to the second embodiment is different from the speaker according to the first embodiment in that a grill 72 is used as a spacer. That is, as shown in FIGS. 3 and 4, the grill 72 having a convex central portion is formed to include an annular portion 73 and a substantially Y-shaped Y band 76, and the outer peripheral side of the annular portion 73. An outer peripheral portion 77 extends from the portion. The cone 56 mounting surface 50 is provided on a flat bottom surface of the outer peripheral portion 77. An outer edge 80 of a net 79 made of perforated metal or the like for protecting the speaker is fitted in a groove 78 formed by the annular portion 73 and the outer peripheral portion 77 by covering the entire convex side of the grill 72. ing. Screw holes 13 are provided at four symmetrical positions of the annular portion 73 and the outer edge portion 80 so as to vertically penetrate the annular portion 73 and the outer edge portion 80. A Y-shaped band 76 is provided inside the annular portion 73, and a connecting portion 74 in which a cylindrical center support 1 made of resin is screwed is provided below the center of the Y-shaped band 76.

To assemble the speaker according to the second embodiment, first, the other end 15 is inserted into the support 9, and the center support 1 is rotated by rotating the center support 1 until the other end 15 reaches the bottom of the nut 10. It is fixed to the bottom yoke 55. Then, the connection part 74 is screwed to the center support 1, and the cone 56 is fixed to the plate 53 and the mounting surface 50.

To fix the speaker according to the second embodiment to the vehicle body, the bottom 8 of the speaker is inserted into a mounting hole provided in the vehicle body, the mounting surface 50 is brought into contact with the vehicle body wall, and the annular portion 73 and the outer edge portion are attached. 80 and all screw holes 13
The outer edge portion 80 is fitted in the groove 78 so as to overlap with each other, and the speaker is screwed to the vehicle body wall using these screw holes 13. By screwing the speaker to the car body in this way,
The net 79 can be fixed at the same time.

According to the second embodiment, the speaker frame, which has conventionally hindered the fixing of the grill type speaker to the vehicle body, becomes unnecessary, so that resonance and vibration of the conventional speaker frame can be prevented. Further, the grill type speaker can be easily fixed to a vehicle body having a different specification. Even if the height and angle of the cone 56 hinder the fixing of the grill type speaker to the vehicle body, only the center support 1 needs to be replaced, and since the center support 1 is a non-magnetic material, Since the leakage of the magnetic flux of the magnetic circuit portion to the vehicle body side is reduced as compared with the related art, the size and weight of the magnet 54 can be reduced, and the grill type speaker can function more efficiently.

FIGS. 5 and 6 are a longitudinal sectional view and a plan view schematically showing a speaker according to the third embodiment, respectively. The speaker according to the third embodiment is different from the speakers according to the first and second embodiments in the method of supporting the spacer and the grill from the bottom yoke. That is, as shown in FIGS. 5 and 6, the spacer 21 includes the annular portion 3 and the cross-shaped tweeter base 2.
And an outer peripheral portion 7 having a substantially L-shaped cross section is formed on the outer peripheral side portion of the annular portion 3 by bending. A tweeter base 20 is fixed inside the annular portion 3, and a tweeter 30 is fixed at the upper center of the tweeter base 20. A center support portion 23 made of resin is integrally formed at the lower center portion of the tweeter base 20, and a screw is cut inside a concave portion 26 at the lower center portion of the center support portion 23. A support 25 is formed in the center of the upper surface of the bottom yoke 24, and a screw hole 27 is provided in the support 25.

In order to assemble the speaker according to the third embodiment, the lower surface of the concave portion 26 and the upper surface of the support portion 25 are brought into contact with each other, and a screw 28 reaching the concave portion 26 from the bottom of the bottom yoke 24 is inserted into a screw hole 27. 28 to rotate spacer 2
1 is screwed to the bottom yoke 24. Then cone 56
Is fixed to the plate 53 and the mounting surface 50.

When the speaker according to the third embodiment is fixed to the vehicle body, the bottom 8 of the speaker is inserted into a mounting hole provided in the vehicle body, and the mounting surface 50 is brought into contact with the wall of the vehicle body and the screw hole 13 is used. To wear.

According to the third embodiment, the speaker frame, which has conventionally hindered the fixing of the two-way speaker to the vehicle body, becomes unnecessary, so that resonance and vibration of the conventional speaker frame can be prevented. Further, the two-way speaker can be easily fixed to a vehicle body having a different specification. Even if the height and angle of the cone 56 hinder the fixing of the two-way speaker to the vehicle body, it is only necessary to replace the spacer 21 and the center support portion 23 is a non-magnetic material. Since the leakage of the magnetic flux appearing in the gap 58 to the vehicle body during the operation of the magnet 54 is reduced, the size and weight of the magnet 54 can be reduced, and the two-way speaker can function more efficiently.

[0026]

As described above in detail, in the speaker according to the present invention, the magnet and the plate are fixed to the bottom yoke, and one end of the cone is fixed to the plate together with the voice coil via a damper. ing. In addition, the spacer having a connection portion with the center support at the center and the bottom yoke are fixed via the center support, and the other end of the cone is provided on the outer periphery of the spacer . Outer circumference
Is fixed to the mounting surface to which the speaker is fixed, so that the speaker frame conventionally required for fixing the speaker is omitted, and the function of the speaker frame is performed by the spacer and the center support. I have. Therefore, a situation in which the speaker frame does not interfere with fixing the speaker to the vehicle body does not occur,
The speaker can be easily fixed to a wide variety of vehicles having different specifications without depending on the fixing place. Even if the height and angle of the cone hinder the fixing of the speaker to the vehicle body, the center support only needs to be replaced, and since the center support is a non-magnetic material, it appears in the gap during the operation of the speaker. Since the leakage of the magnetic flux to the vehicle body side is reduced as compared with the related art, the magnet can be reduced in size and weight, and the speaker can function more efficiently. Further, the other end of the cone is outside the spacer.
The entire periphery of the cone provided on the periphery is fixed.
Fixed to the mounting surface that is
Distortion does not affect the speaker back pressure.
Can be further reduced.

In the speaker according to the present invention,
A magnet and a plate are fixed to the bottom yoke, and one end of the cone is fixed to the plate via a damper together with a voice coil. In addition, a center support portion is formed at the center of the tweeter base to which the spacer is fixed, the center support portion is screwed to the bottom yoke, and the other end of the cone is provided on the outer peripheral portion of the spacer. Perimeter of said cone
Since the entire periphery of the speaker is fixed to the mounting surface, the speaker frame conventionally required for fixing the speaker is omitted, and the function of the speaker frame is performed by the spacer and the center support portion. Has been fulfilled. Therefore, a situation in which the speaker frame does not interfere with the fixing of the speaker to the vehicle body does not occur, and the speaker can be easily fixed to a wide variety of vehicles having different specifications without depending on the fixing position. Even if the height or angle of the cone hinders the fixing of the speaker to the vehicle body, it is only necessary to replace the spacer, and since the center support is a non-magnetic material,
Since the leakage of the magnetic flux to the vehicle body side during the operation of the speaker is reduced, the size and weight of the magnet can be reduced, and the speaker can function more efficiently. Also before
The other end of the cone is provided on the outer periphery of the spacer.
On the mounting surface where the entire circumference of the cone is fixed
Since it is fixed and the influence of the conventional speaker frame on the back pressure of the speaker is eliminated, the distortion can be further reduced.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view schematically illustrating a speaker according to a first embodiment of the present invention.

FIG. 2 is a plan view schematically showing the speaker according to the first embodiment.

FIG. 3 is a longitudinal sectional view schematically showing a speaker according to a second embodiment.

FIG. 4 is a plan view schematically showing a speaker according to a second embodiment.

FIG. 5 is a longitudinal sectional view schematically showing a speaker according to a third embodiment.

FIG. 6 is a plan view schematically showing a speaker according to a third embodiment.

FIG. 7 is a plan view schematically showing a conventional speaker.

[Explanation of symbols]

 Reference Signs List 1 center support 2, 21 spacer 4, 74 connection part 7, 77 outer peripheral part 20 tweeter base 23 center support part 24, 55 bottom yoke 50 mounting surface 53 plate 54 magnet 56 cone 57 voice coil 60 damper

Claims (2)

(57) [Scope of request for utility model registration] 1. A magnet and the plate is fixed to the bottom yoke, the speaker voice coil and cone are fixed through the damper to the plate, the mounting surface outer peripheral portion the entire circumference of the cone to the outer peripheral portion is fixed Have
A speaker comprising a spacer having a connection portion with a center support at a central portion, wherein the spacer and the bottom yoke are fixed via the center support. 2. A speaker in which a magnet and a plate are fixed to a bottom yoke, and a voice coil and a cone are fixed to the plate via a damper, the ring having a mounting surface on which the entire outer periphery of the cone is fixed. A tweeter, wherein a tweeter base is fixed to a spacer having a shape, a center support part is formed at a center part of the tweeter base, and the center support part is screwed to the bottom yoke.