JPH024555Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a horn speaker having a diaphragm that is made of the same material as the edge part and has a thick part integrally formed around the support. It is.

[Conventional technology]

Conventionally, in the dome-shaped diaphragm of a horn speaker, the dome part 1 and the edge part 2 are made separately or integrally, as shown in FIG. It was common practice to attach it by sandwiching it from both sides with ring-shaped packings 4 and 5.

[Problem that the invention attempts to solve]

These ring-shaped packings 4 and 5 function as spacers to obtain the necessary space for the diaphragm to vibrate, and also as supporting materials that elastically support the diaphragm with appropriate softness. Not only are the shaped packings 4 and 5 required as separate parts, but also the diaphragm and the packing are made of different materials, making it difficult to obtain an appropriate elastic support structure. in this case,
If the packings 4 and 5 are too soft or too hard, point a is easily damaged, which affects the vibration characteristics of the diaphragm and adversely affects the sound quality. Therefore, appropriate ease of vibration (softness) and firmness to absorb and damp vibrations are required in relation to the characteristics of the diaphragm.

In addition, in Japanese Utility Model Publication No. 47-529, a peripheral edge portion 1 of cone paper is provided approximately at the center of the thick packing portion 13.
2 is integrally formed, and an upright part 13a for maintaining a small gap between the peripheral edge part 12 and the frame 2.
A paper cone for a speaker is disclosed.

However, the one described in this publication is related to a cone speaker, and the packing part 13 is attached with an adhesive 3.
Therefore, it has to be joined to the inner circumferential stepped portion 21 of the frame 2, which is complicated.

The present invention was developed in view of the above points, and by integrally molding the diaphragm for a horn speaker so that the peripheral part has a thick wall, it is possible to reduce the pressure plate (packing) when incorporating the diaphragm into the drive unit. It is an object of the present invention to provide a horn speaker that can be easily installed.

[Means for solving problems]

In order to achieve the above object, the horn speaker of the present invention, as shown in FIG. A thick wall portion 6 is formed by integrally forming the same material with a larger wall thickness and a substantially L-shaped longitudinal section, and the inner periphery of this thick wall portion is connected to the upper plate 9 of the magnetic circuit of the horn speaker. The diaphragm is held in such a manner that the diaphragm is held in contact with the outer periphery, and the outer periphery of the thick portion is held in contact with the inner periphery of the throat tool 10 of the horn speaker.

[Effect]

The horn speaker diaphragm is made of the same material as that used for the edge part 2 connected to the dome part 1, and has a thick part 6 with a substantially L-shaped longitudinal section integrally molded around the support. Because of this, it is possible to easily obtain the appropriate elasticity required for the support, making it difficult to break. In addition, the center of the diaphragm can be easily held and positioned, making installation and holding work easier.

〔Example〕

Hereinafter, embodiments of the present invention will be described based on the drawings. As shown in FIGS. 2 and 3, thick portions 6 in a ring shape or at regular intervals are integrally provided around the edge portion 2 of the horn speaker diaphragm. Although some parts of the thick portion 6 are omitted from the drawings, as shown in FIG. 1, the thick portion 6 is formed in a substantially L-shape in longitudinal section. The thick portion 6 is made of the same material as the edge portion 2 and is integrally molded so as to have a larger thickness. Various materials such as synthetic resins, fibers, and cloth can be used for the diaphragm, singly or in combination, but when molding under heat and pressure, a space corresponding to the thick part 6 is provided around the mold. If left in place, the material will expand due to heat or be pushed out to the periphery due to pressure, and the thick portion 6 will be integrally molded. 7 is a bobbin, and 8 is a voice coil.

The diaphragm for a horn speaker according to the present invention is suitable for a diaphragm using synthetic resin as part or all of the diaphragm material. The dome portion 1 and the edge portion 2 may be integrally molded or may be made separately and bonded together. The thickness of the thick portion 6 is formed so as to gradually increase from the edge portion 2.

FIG. 1 shows an embodiment of the horn speaker of the present invention. In the case of this example, the thick part 6 is formed with a substantially L-shaped vertical section, and the inner periphery is in contact with the outer periphery of the upper plate 9 of the magnetic circuit, and the outer periphery is in contact with the inner periphery of the throat tool 10. The positioning is performed and held by aligning the two. Therefore, positioning parts and assembly jigs are no longer necessary. 11 is the horn, 12
13 is a magnetic gap, 14 is a center pole, 15 is a lower plate, and 16 is a lid.

[Effect of idea]

As explained above, the horn speaker diaphragm in the horn speaker of the present invention is made of the same material as the edge part and has a thick part integrally molded around the support. It is possible to easily obtain the appropriate elasticity required for this, and it is difficult to break at point a shown in Fig. 4, and ring-shaped packing is not required, reducing the number of parts and simplifying the configuration. Furthermore, it has the advantage of being able to serve both as a center holder and a positioning ring.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional explanatory diagram showing one embodiment of the horn speaker of the present invention, and FIG. 2 is a perspective view of the horn speaker diaphragm shown in FIG. 3 is a cross-sectional explanatory diagram of the diaphragm shown in FIG. 2 (however, only the right half is shown),
FIG. 4 is an explanatory cross-sectional view of a conventional diaphragm. 1...Dome part, 2...Edge part, 3...Peripheral part, 4, 5...Packing, 6...Thick wall part, 7...
...Bobbin, 8...Voice coil, 9...Top plate, 10...Throat tool, 11...Horn, 1
2...Magnetic gap, 13...Magnet, 14...
Center pole, 15...Lower plate, 16...
…lid.

Claims (1)

[Scope of utility model registration request] A support part around the edge part of a horn speaker diaphragm having a dome part 1 and an edge part 2 is integrally formed with the same material as the edge part and has a large wall thickness and has a substantially L-shape in longitudinal section. A thick portion 6 is provided, and the inner periphery of this thick portion is brought into contact with the outer periphery of the upper plate 9 of the magnetic circuit of the horn speaker, and the outer periphery of the thick portion is brought into contact with the inner periphery of the throat tool 10 of the horn speaker. A horn speaker characterized in that the diaphragm is held by being held in contact with each other.