JPS63146595A - Diaphragm for speaker - Google Patents

Abstract

PURPOSE:To obtain a diaphragm with ease of manufacture. high elasticity, and with rigidity reinforced in the radial direction by providing seam by a high elastic fiber group radially from the top of the diaphragm to the circumference. CONSTITUTION:A cone diaphragm 1 is conical and opened from the top 1a to the circumference 1b. A base 2 forming the diaphragm 1 is formed by pressing the high elastic fiber clotch, which is made of an inorganic fiber such as corbon fiber or silicon fiber and an organic fiber such as alamide fiber with woven or pressing. Moreover, the seam 3 of the high elastic fiber group provided radially from the top 1a of the diaphragm 1 to the circumference 1b increase the radial rigidity of the diaphragm 1 and acts like a reinforcement member. In providing the seam 3, the diaphragm using the high elastic fiber cloth as the base with high rigidity and reinforced radially is obtained simply.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a diaphragm used in a speaker.

(Prior art and other problems) The physical properties of the speaker imaging plate include that it must be lightweight to improve efficiency, it must be highly elastic to improve transient characteristics and widen the band, and In order to suppress split vibration and achieve frequency characteristics of 11, it is required that the internal loss be appropriately large.

In order to meet these demands, there is a speaker imaging plate made of highly elastic fiber cloth such as carbon fiber as a diaphragm for the purpose of increasing elasticity. However, it is desirable to increase the elastic modulus in the radial direction for speaker imaging plates, etc.
Molded high elasticity fiber cloth is insufficient in terms of increasing the elasticity in the radial direction. In addition, carbon is aligned in one direction to increase elasticity in the radial direction! There is a diaphragm formed by arranging Qtltun in the radial direction, but this diaphragm requires a lot of man-hours and increases the cost.

(Means for Solving the Problems) The present invention has been proposed in view of the above points, and its purpose is to provide a diaphragm for a speaker that has excellent physical properties required for a diaphragm and is easy to manufacture. The aim is to provide 8 treatments.

That is, in order to achieve the above objective, lT'! i) Vibration for a speaker whose characteristic is that a seam is provided with rS elastic fiber yarn in a q1 line extending from the top of the diaphragm toward the periphery in a speaker imaging plate having an elastic fiber cloth as a base. The board is the gist.

(Function) By using lV''!i elastic rag cloth, which is familiar as the base of the S moving plate for speakers, and making stitches with high elastic fiber yarn in a radial manner, kliΔ is easy, highly elastic, and in the radial direction. A diaphragm with reinforced rigidity can be obtained.

(Example) The present invention will be described in detail below with reference to the drawings.

FIG. 1 is a side view showing an example of a swallowtail according to the present invention, and FIG. 2 is a diagram illustrating a base before forming a diaphragm. In the figure, reference numeral 1 denotes a cone-shaped diaphragm having a conical shape, and the 10 section 1a is opened toward the peripheral section 1b. The U body 2 forming the diaphragm 1 is press-molded from 11 high-elastic fibers, and the high-elastic fiber cloth is made of carbon fibers, inorganic fibers such as navy blue, silicon fibers, and organic fibers such as aramid fibers. Woven cloth or pressed fabric is used. J, T, 3 are 111. This is the la-thread made of highly elastic fiber yarns arranged in rays. In other words, the eye 3 increases the rigidity of the diaphragm 1 in the radial direction I21 and acts as a reinforcing material.

Next, molding of the imaging plate will be explained using FIG. 2.

First, stitches 3 of high elastic fiber thread are made in a linear manner on the high elastic fiber cloth 2'. This is easy if you use an industrial sewing machine or the like. Next, the highly elastic fiber m2° with the seams 3 is treated with resin impregnation, etc., and then press-molded using upper and lower molds to obtain the diaphragm 1.

In addition, when inserting the F+1 stitches and forming the imaging plate, it is possible to sew multiple pieces of high-elastic fiber cloth 2° all at once, or to sew multiple pieces of high-elastic fiber If t52' with seam 3 in place by shifting the seam 3. Bonding and press molding is an embodiment of -2.

(Effects of the Invention) As described above, according to the present invention, a speaker diaphragm having a high-elastic fiber cloth as a base is coated with high-elastic fibers in a tIio4 linear manner from the top of the diaphragm toward the periphery. By creating seams with thread, a highly rigid and radially reinforced diaphragm made of highly elastic fiber cloth can be manufactured using a simple manufacturing method.
It has the advantage of being

[Brief explanation of the drawing]

Fig. 1 shows an embodiment of the present invention, Fig. 2 [J photo! 7
FIG. 1 is a diagram illustrating a base before temporary molding. 1...Diaphragm, 1a...Top, 1b...
Peripheral part, 2...Base body, 2°...High elastic fiber cloth,
3...Seam Special Applicant Foster Electric Co., Ltd. Agent Patent Attorney Michio Takayama, J Haka1 Figure 1

Claims (1)

[Claims] In speaker diaphragms based on highly elastic fiber cloth,
A diaphragm for a speaker, characterized in that seams are provided in a radial pattern from the top of the diaphragm to the periphery using highly elastic fiber yarn.