JPH0628878Y2 - Speaker cone paper - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to improving the weight balance of speaker cone paper in which an edge is attached to the peripheral edge of a diaphragm.

(Prior Art) In recent years, there has been a strong demand for high-performance amplifiers in audio equipment and high-input compatibility of speakers. With regard to this high input capability, in a speaker with a conventional general structure, it is necessary to solder the lead wire pulled out from the voice coil to the tinsel wire connected to the terminal board on the cone paper. There is a problem in that there is a difference in weight balance between the soldered side and the opposite side of the voice coil with the voice coil as the center, and the following rolling phenomenon occurs.

That is, when a particularly large signal is input to the speaker,
A rolling phenomenon occurs when the vibration system operates in amplitude,
The voice coil may come into contact with the yoke or the plate to generate an abnormal sound, which may eventually lead to a fatal defect called disconnection of the voice coil wire. As a remedy for such a problem due to the weight imbalance of the vibration system, conventionally, for example, as shown in FIGS.
The balancer (weight) 3 is attached to the diaphragm 1 on the opposite side of 180 °, and so on.

(Problems to be Solved by the Invention) However, according to the above-described conventional improvement measures, there are problems that cost and man-hours increase and that there are many disadvantages such as deterioration of sound quality due to increase in cone paper weight.

Also, when making conventional speaker cone paper,
As shown in FIG. 5, an edge material 5 is punched out in a ring shape from a foam material 4 which is generally made of cloth or foam material (FIG. 5 (a)), and the ring-shaped material 5 is hot-pressed to form an edge. 6 was formed (FIGS. 5 (b) and (c)), and the edge 6 was attached to the peripheral portion of the diaphragm 1.

Therefore, as the diameter of the switch is larger, the area of the shaded area in FIG. 5 (a) is larger, and the number of materials to be taken at the edges is poor, which is also the cause of the deterioration of the material cost.

This invention was made to solve such problems,
The purpose is to add components such as a balancer as a measure against speaker rolling, increase the assembly man-hours accompanying it, and to prevent deterioration of sound quality due to an increase in cone paper weight, to prevent rolling, and to achieve cost performance. It is to provide high cone paper for speakers.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention bends a rod-shaped edge material cut into a predetermined length into a ring shape and forms an edge by overlapping and joining both ends thereof. The edge is then attached to the peripheral edge of the diaphragm.

(Operation) According to the present invention, due to the above-mentioned configuration, the lead wire pulled out from the voice coil on the cone paper and the tinsel wire are soldered to each other, and the edges are superposed and joined to each other by approximately 180 °. By arranging the parts, it is possible to balance the weight when the cone paper vibrates, and to prevent rolling.

(Embodiment) A preferred embodiment of the present invention will be described with reference to the drawings.

FIGS. 1 (a) to 1 (e) show a process of creating an edge to be attached to the peripheral portion of the speaker diaphragm. Note that the same or corresponding members are denoted by the same reference symbols throughout the drawings, and description thereof will be omitted.

In this embodiment, a plate-like foam material 4 made of a foam material such as urethane as shown in FIG. 1 (a) is cut to form a prismatic edge material 5 as shown in FIG. 1 (b). Is cut out, bent into a ring shape, and both ends thereof are superposed and joined (Fig. 1 (c)). Further, this ring-shaped material is formed by hot press forming to form an edge 6 as shown in FIG. 1 (d).
To finish.

The edge 6 thus formed is characterized in that it has a cross-coupled portion as shown by the hatched portion in FIG. 1 (d).

FIGS. 2 (a) and 2 (b) show a state in which a speaker is formed by using cone paper made by bonding the edge 6 to the peripheral portion of the diaphragm 1.

That is, on the side where the voice coil wire 7 and the tinsel wire 8 are soldered on the cone paper,
The connecting portion of the edge 6 (the hatched portion in FIG. 2 (a)) is positioned 180 ° on the opposite side with the voice coil 9 as the center, and is bonded to the frame 10. This makes it possible to adjust the vibration mode balance when the vibration system performs an amplitude operation, and prevent rolling. Further, since the cone paper can be produced without making an extra waste part in the edge material, the material cost can be greatly reduced.

Further, according to the embodiment of the present invention, not only a general speaker but also a coaxial type speaker as shown in FIGS. In this embodiment, by adjusting the width of the joint portion of the edge 6 to be superposed and joined, it is possible to change the rigidity and the physical properties of the edge 6 at a portion other than the joint portion.

(Effects of the Invention) As described above, according to the present invention, a rod-shaped edge material cut into a predetermined length is bent into a ring shape, and both ends thereof are superposed and joined to form an edge. By sticking to the peripheral part, it is possible to obtain a high-input speaker cone paper that does not cause rolling without adding components such as a balancer, increasing the number of assembly steps accompanying it, and degrading sound quality due to an increase in cone paper weight. be able to.

Further, since the edge material can be efficiently cut out from the foam material having a required size, there is no material loss, and it is economical and the material cost can be reduced.

[Brief description of drawings]

FIG. 1 is a diagram showing a process of forming an edge, FIG. 1 (a) is a diagram showing a state in which an edge material is cut out from a plate-like foam, and FIG. 1 (b) is a prismatic edge. Fig. 1 (c) is an external view of the material, Fig. 1 (c) is an external view of the edge material rolled into a ring shape, Fig. 1 (d) is a plan view of the edge formed by hot press molding, and Fig. 1 (e). Is its CC ′ cross-section view,
FIG. 2 (a) is a plan view of the speaker when the present invention is applied to a general speaker, FIG. 2 (b) is a sectional view taken along the line DD ', and FIG. 3 (a) is the coaxial of the present invention. 3B is a plan view of the speaker when applied to a speaker of a type, FIG. 3B is a sectional view taken along the line EE ', and FIG. 4A is a plan view of a speaker using a conventional cone paper. FIG. 5B is a sectional view taken along the line AA ', and FIG. 5 is a view showing a conventional edge forming process.
FIG. 5 (a) is a view showing a state in which an edge material is cut out from a foam material, FIG. 5 (b) is a plan view of an edge formed by hot press molding, and FIG. 5 (c) is its OB cross section. It is a figure. 1 ... Vibration plate 4 ... Foam material 5 ... Edge material 6 ... Edge

Claims (1)

[Scope of utility model registration request] 1. A bar-shaped edge material cut into a predetermined length is bent into a ring shape, both ends thereof are overlapped and joined to form an edge, and the edge is bonded to a peripheral portion of a diaphragm. And speaker cone paper.