JP2603679Y2 - 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. 5 is a longitudinal sectional view schematically showing a conventional speaker. In the drawing, reference numeral 52 denotes a speaker frame. One end of a generally inverted truncated conical speaker frame 52 made of an iron plate or the like is provided with an annular metal plate 53.
A flat annular mounting surface 50 for fixing the speaker to the vehicle body is provided on the outer periphery of the other end of the speaker frame 52. On the mounting surface 50,
A screw hole (not shown) is provided. 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 or the like 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 58 is provided around the central axis of the bottom portion 8, and the gap 56 has a cone 56.
A voice coil 57 having a cylindrical shape extends from the voice coil 57. The voice coil 57 is configured to vibrate freely in the gap 58. In the upper part of the voice coil 57,
A center cap 59 is provided to prevent dust and the like from entering the gap 58 by the center cap 59.

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 hits the horizontal mounting surface of the vehicle body. And screw it into the car body.

[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, there may be a case where the speaker frame 52 hits the vehicle body side member and 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. . Such a problem cannot be expected to be remarkably improved even if the height or the spread angle of the cone 56 is changed, and it is still difficult to fix the speaker to a vehicle body having a different specification. Further, since the magnetic flux appearing in the gap 58 is transmitted to the vehicle body side through the speaker frame 52, there is a problem 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]

SUMMARY OF THE INVENTION The present invention provides a speaker having a speaker body 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. A spacer having an annular pressing portion for sandwiching the pressing portion with the front surface of the attached portion, connecting the pressing portions, forming a connecting portion near an intersection with the axis of the cone, and a connecting portion of the spacer. And a center support for connecting the bottom yoke, wherein the center support extends from the bottom surface of the bottom yoke, and the bottom yoke is mounted and fixed so as to be sandwiched by positioning projections provided on the center support. Wherein the spacer and the speaker main body are attached to the attached portion via a center support. It is.

[0008]

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 via a damper together with the voice coil. Moreover, it has an annular pressing portion that clamps the outer peripheral edge of the cone with the front surface of the mounted portion, and connects the pressing portions,
It is provided with a spacer having a connecting portion formed near the intersection with the axis of the cone, and a center support for connecting the connecting portion of the spacer and the bottom yoke, which is conventionally required when the speaker is fixed to the vehicle body. The speaker frame is omitted, and the function of the speaker frame is fulfilled by the spacer and the center support. Therefore, it does not occur that the speaker cannot be fixed to the vehicle body side because it is obstructed by the speaker frame, and it 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.

Further, the center support connecting the connection portion of the spacer and the bottom yoke is provided with a positioning projection, and one end of the center support extends from the bottom surface of the bottom yoke whose center is formed in a cylindrical shape. Then, the bottom yoke is mounted and fixed to the positioning projection so as to be clamped. Further, by fixing the vicinity of one end of the extended center support to an attached portion such as a rear tray of a vehicle, 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 fixed speaker main body and the spacer are attached to the attached portion via the center support. Therefore, the speaker main body and the spacer can be integrally fixed and supported only by fixing one location near one end of the center support,
Workability can be improved.

[0010]

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.

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

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. Is formed by bending. An annular pressing portion 5 for holding the outer peripheral edge of the cone 56 between the outer peripheral portion and the front surface of the mounted portion.
0 is provided on the flat bottom surface of the outer peripheral portion 7. A band 6 is disposed at a portion corresponding to the diameter of the annular portion 3 of the spacer 2, and a lower portion of the center of the band 6, that is, a connection between the pressing portions 50, is formed near the intersection with the axis of the cone 56. A connection portion 4 is provided in which a column-shaped resin center support 1 is screwed. Cone 56 around center support 1
The cone 56 is fixed to the upper surface of the plate 53 via a damper 60 at one end of the cone 56. On the other hand, the other end of the cone 56 is pressed by a pressing portion 50 through an edge portion 51 which is rounded to allow a margin.
Is in contact with Screws are cut from the lower portion 15a of the center support 1 to the other end 15b. Bottom yoke 2 connected to lower part 15a of center support 1
At the center of the upper surface of the upper surface 4a, a column 9 is protruded.
When the center support 1 is attached to the bottom yoke 24a, the center support 1 extends from the bottom surface 24b of the bottom yoke 24a, and the upper surface of the support portion 9 contacts the lower surface of the positioning protrusion 11, and Yoke 24
a is fixed by a fixing member such as a nut 10a so that the nut a is held by the positioning protrusion 11 provided on the center support 1. The vibration of the vehicle body is absorbed by the positioning projections 11 by contacting the upper surface of the support portion 9 of the bottom yoke 24a with the positioning projections 11, so that the vibration is prevented from being transmitted to the cone 56 via the center support 1. ing.

An annular magnet 54 is fixed on the upper surface of the outer peripheral portion of the bottom yoke 24a, and an annular plate 53 is fixed on the upper surface of the magnet 54. These bottom yoke 24a and magnet 54 are fixed. A substantially columnar bottom portion 8 including the first and second plates 53 is formed. As described above, when the center support 1 is mounted on the bottom yoke 24a, the other end 15b of the center support extends from the bottom surface 24b of the bottom yoke 24a, and a screw is provided from the lower portion 15a to the other end 15b with a margin. The center support 1, which has been cut, has a nut 10a
And is fixed to the bottom yoke 24a using the same center support 1 even if the thickness of the plate 53 and the magnet 54 forming the bottom 8 including the bottom yoke 24a is changed. can do.

To assemble the speaker according to the present embodiment, first, the other end 15b is inserted into the support 9, and the center support 1 is rotated until the positioning projection 11 contacts the upper surface of the support 9, and the center support 1 is rotated. 1 is extended from the bottom yoke 24a and fixed to the bottom yoke 24a using a fixing member such as a nut 10a. And connection 4
Is screwed to the center support 1, one end of the cone 56 is fixed to the plate 53, and the other end is brought into contact with the pressing portion 50.

FIG. 2 is a longitudinal sectional view showing a state in which the speaker shown in FIG. 1 is fixed to a vehicle body. The configuration is substantially the same as that of the speaker shown in FIG. 1, and the same components are denoted by the same reference numerals. In order to fix the speaker according to FIG. 1 to the vehicle body, the bottom 8 of the speaker is inserted into a mounting hole provided in the vehicle body, and the pressing portion 50 of the spacer 2 at which the other end of the cone 56 is in contact is placed on the upper surface of the rear tray 61. Press Vehicle iron plate 6
A plate-shaped bracket 63a is pressed against the lower surface of the bracket 2, and the other end 15b of the center support 1 extending from the bottom surface of the bracket 63a is screwed and fixed to the bracket 63a with a fixing member such as a nut 10b. Thus, the rear tray 61
And the vehicle iron plate 62 are sandwiched between the annular portion 3 of the spacer 2 and the bracket 63a.
By simply fixing b, the speaker can be fixed to the vehicle body having the rear tray 61 and the vehicle iron plate 62, so that the assembling process is simplified and the workability can be improved.

FIG. 3 is a longitudinal sectional view of a speaker fixed to a vehicle according to another embodiment of the present invention. Parts having the same configuration as the speaker shown in FIG. 2 are denoted by the same reference numerals. In FIG. 3, the vehicle body to which the speaker is fixed has only the rear tray 61 and does not have the vehicle iron plate 62. In the case of the present embodiment, the bracket 63b having a U-shaped vertical section is pressed against the rear tray 61, and the other end 15b of the center support 1 extending from the bottom surface of the U-shaped bracket 63b is connected to the wing nut 10b. It is screwed and fixed to the bracket 63b with a fixing member such as. Thus, the same effects as in the embodiment shown in FIG. 2 can be obtained for a vehicle body having only the rear tray 61.

In this embodiment, the nut 10a and the wing nut 10b are used as fixing members for the center support 1. However, as shown in FIG.
The portion fixed to the bottom yoke 24a may be deformed by pressing with a pressing member or the like, and may be fixed by projecting in the circumferential direction. Alternatively, as shown in FIG. 4B, a cut may be made in the center support 1, and the cut portion may be deformed and protruded in the direction of the arrow to be fixed.

[0018]

As described above, 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 the damper. I have. In addition, it has an annular pressing portion that clamps the outer peripheral edge of the cone between the front surface of the attached portion and connects the pressing portions,
Conventionally, when a speaker is fixed, it is necessary to fix the speaker because it includes a spacer having a connection portion formed near the intersection with the axis of the cone and a center support connecting the connection portion of the spacer and the bottom yoke. The frame is omitted, and the function of the speaker frame is fulfilled by the spacer and the center support.

Therefore, a situation in which the speaker cannot be fixed to the vehicle body due to the obstruction of the speaker frame does not occur, and the speaker can be easily fixed to a wide variety of vehicles having different specifications regardless of the fixing place. it can. Even if the height or angle of the cone hinders 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 speaker operation. Since the leakage of the generated magnetic flux to the vehicle body side is reduced as compared with the related art, the size and weight of the magnet can be reduced, and the speaker can function more efficiently.

Further, since the influence of the conventional speaker frame on the back pressure of the speaker is eliminated, the distortion can be further reduced.

Further, the center support for connecting the connection portion of the spacer and the bottom yoke is provided with a positioning projection, and one end of the center support extends from the bottom surface of the bottom yoke whose center is formed in a cylindrical shape. Then, since the bottom yoke is mounted and fixed so as to be sandwiched by the positioning projections, even if the thickness of the magnet or the plate fixed to the bottom yoke changes, it is fixed with the same center support. And can cope with high-mix low-volume production.

Further, one end of the extended center support is fixed to a mounting portion such as a vehicle, and the speaker body and the spacer are mounted to the mounting portion via the center support. Suffices to fix one portion near one end, and the mounting process can be simplified, and workability can be improved and processing cost can be reduced.

[Brief description of the drawings]

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

FIG. 2 is a longitudinal sectional view showing a state where the speaker according to FIG. 1 is fixed to a vehicle body.

FIG. 3 is a longitudinal sectional view of a speaker fixed to a vehicle body according to another embodiment of the present invention.

FIG. 4 is a view showing a state where the center support 1 of the speaker according to the present invention is fixed.

FIG. 5 is a longitudinal sectional view schematically showing a conventional speaker.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Center support 2 Spacer 3 Annular part 4 Connecting part 6 Band part 7 Outer peripheral part 8 Bottom part 9 Support part 10a, 10b Nut 11 Positioning protrusion 15a Lower part 15b Other end part 24a Bottom yoke 24b Bottom surface 50 Pressing part 51 Edge part 52 Frame 53 Plate 54 Magnet 55 Bottom yoke 56 Cone 57 Voice coil 58 Gap 59 Center cap 60 Damper 61 Rear tray 62 Vehicle iron plate 63a, 63b Bracket

Claims (1)

(57) [Scope of request for utility model registration] 1. A speaker having a speaker body 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, wherein the outer peripheral edge of the cone is in contact with the front surface of a mounting portion. A spacer having an annular pressing portion sandwiched between the connecting portions, connecting the pressing portions and forming a connecting portion near an intersection with the axis of the cone, and a center connecting the connecting portion of the spacer and the bottom yoke. A support, wherein the center support extends from the bottom surface of the bottom yoke, and the bottom yoke is mounted and fixed so as to be sandwiched by positioning projections provided on the center support. A speaker which is attached to an attachment portion via a center support.