JPS5832396Y2 - speaker - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a speaker in which a mass ring is attached to the connecting part between a bobbin around which a voice coil is wound and a cone paper, and is particularly concerned with woofers, midrange ranges, etc. used in multiway speaker systems. It is suitable for use in cone-type dynamic speaker knits.

Conventionally, in order to improve the frequency characteristics of a speaker, it is known that a mass ring is attached to a connecting portion between a voice coil bobbin and a paper cone.

That is, as shown in FIG. 1, for example, a cylindrical bobbin 3 around which a voice coil 1 is wound is passed through the center of a paper cone 5 and connected to the paper cone 5 with an adhesive or the like. A mass ring 7 made of metal, plastic, etc. is attached to the connecting portion, ie, the narrow angle area formed by these, with an adhesive.

By attaching the mass ring 7 in this way, the mass is increased without increasing the stiffness of the vibration system, so the sound pressure level at the high resonance frequency fh of the vibration system is lowered, and the frequency characteristics in the high range are improved. Flattened.

Moreover, the lowest resonant frequency f is increased by increasing the mass of the vibrating system.

is further lowered to a lower frequency range, and the frequency characteristics of the speaker unit are improved.

In addition, with the piston movement of the bobbin 3 and the cone paper 5, the top 3a of the bobbin 3 in particular tends to resonate and deform into an elliptical shape.
is reinforced and the rigidity of the bobbin 3 is increased, which has the advantage of preventing deformation of the bobbin.

By the way, when attaching the mass ring 7' to the connecting part, adhesive is applied or dropped on at least one part of the outer peripheral surface 3b of the top 3a of the bobbin 3 and the cone paper 5 in the included angle area, and then I had to put on Masling 7.

This is because if the adhesive is applied after the massing ring 7 is attached to the connecting part (included angle part), there is a high possibility that the massing ring 7 will not be completely adhered to the bobbin 3 or the cone paper 5.

Therefore, the massing ring 7 must be attached after the adhesive application process, and there is no flexibility in the line organization of the manufacturing process.

The present invention was devised in view of the above-mentioned circumstances, and in the speaker mentioned at the beginning, the part of the mass ring that contacts the bobbin and the part of the mass ring that contacts the cone paper. at least one part,
For example, by providing unevenness in the portion that contacts the cone paper, and allowing adhesive to flow through the gap formed by the unevenness, the mass ring is attached to at least the bobbin and the cone paper.
On the other hand, the present invention relates to a speaker characterized in that it is fixed to a paper cone, for example.

Next, an embodiment in which the present invention is applied to a cone type dynamic speaker will be described with reference to FIGS. 2 to 7.

Note that parts common to those in FIG. 1 are designated by common reference numerals, and their explanations will be omitted.

FIG. 2 shows a mass ring 10 according to a first embodiment of the present invention, which has an opening 12 and whose vertical cross section is approximately rectangular as shown in FIG. The outer and inner corners of the lower end are cut out to provide sloped surfaces 14,15.

A plurality of protrusions 16 are provided on the outer inclined surface 14 at approximately equal intervals.

Further, FIG. 4 shows a state in which the massing ring 10 configured as described above is attached to the included angle region of the connecting portion between the bobbin 3 and the cone paper 5, and the massing ring 10 is attached to the protrusion 16.
The top portion 13a of the bobbin 3 is placed on the cone paper 5 via the mass ring 10, and the top portion 13a of the bobbin 3 is fitted into the opening 12 of the mass ring 10.

In this case, due to the presence of protrusions 16 between the massing ring 10 and the cone paper 5, the massing ring 1 is formed between these protrusions 16.
Gaps 18 are intermittently formed in the circumferential direction of the hole.

Therefore, if adhesive is dropped onto the paper cone 5 near the outer periphery of the mass ring 10 in this state, the adhesive will move along the paper cone 5 by the arrow A as shown in FIG. 5 due to gravity.
The paper flows in this direction and flows into the connecting portion between the bobbin 3 and the cone paper 5.

The mass ring 10 is securely fixed to the cone paper 5 and the top portion 3a of the bobbin 3 by the adhesive that has flowed in.

In this way, by using the massing ring 10 configured as described above, it becomes possible to incorporate the mounting process of the massing ring 10 before the adhesive application process in line knitting.

It goes without saying that the adhesive may be applied in advance as in the prior art, and then the massing ring 10 may be attached.

Therefore, there is an advantage that the manufacturing line for speaker units such as woofers and midrange ranges can be freely organized.

Therefore, in the actual assembly process, if there is a process in which there is time for the assigned work, the line can be organized in such a way that the mass ring 10 is installed in that process, and the line organization can be streamlined. .

6 and 7 show a second embodiment of the present invention, in which a mass ring 10 having a plurality of protrusions 20 on the inner peripheral surface 10a is used. There is.

In this case, as shown in FIG. 7, the outer inclined surface 14 of the mass ring 10 directly contacts the cone paper 5, and the outer peripheral surface 3b of the top 3a of the bobbin 3 and the plurality of protrusions 20 contact each other. In this state, the mass ring 10 is attached to the connecting portion between the bobbin 3 and the cone paper 5.

In this state, a gap 22 is formed between the inner circumferential surface 10a of the mass ring 10 and the outer circumferential surface 3b of the top portion 3a.

Therefore, if the mass ring 10 is attached to the top 3a of the bobbin 3 and adhesive is dropped from above the bobbin 3 into the vicinity of the gap 22, the adhesive will be moved by gravity to the arrow B in FIG.
flow in the direction.

This adhesive flows into the connecting portion, and as a result, the mass ring 10 is reliably fixed to the bobbin 3 and the paper cone 5.

Although the present invention has been described above based on the first and second embodiments, the present invention is not limited to these embodiments.
Further modifications are possible based on the technical idea of the invention.

For example, a plurality of protrusions may be provided on the outer inclined surface 14 and the inner peripheral surface 10a of the mass ring 10, respectively.

In this case, the adhesive can be injected from the gap between the bobbin 3 and the mass ring 10 and the gap between the mass ring 10 and the cone paper 5, so that the mass ring 10 can be attached more reliably. become.

Further, in order to form a void, the inclined surface 14 of the mass ring 10 may be formed into a corrugated shape as shown in FIG. It may be formed into

Furthermore, the inclined surface 14 and the circumferential surface 10b of the mass ring 10
Both may form wavy unevenness.

Also, the inclined surface 14 or inner peripheral surface 10 b of the mass ring 10
A protrusion may be provided on one side, and the other side may be formed into a wave-like unevenness.

As described above, the present invention provides unevenness on at least one of the part of the massing ring that contacts the bobbin and the part of the massing ring that contacts the cone paper, and allows the adhesive to flow through the gap formed by the unevenness. The mass ring is fixed to at least one of the bobbin and the cone paper.

Therefore, it is possible to attach the mass ring in advance to the connecting portion between the bobbin of the voice coil and the cone paper, and then pour adhesive to fix the mass ring.

Therefore, the massing ring mounting process can be optionally incorporated into the line organization of the speaker manufacturing process, greatly contributing to the flexibility of the line organization.

[Brief explanation of drawings]

FIG. 1 is a vertical cross-sectional view of a conventional cone-type dynamic speaker, FIGS. 2 to 5 are for explaining the first embodiment of the present invention, and FIG. Figure 3 is a perspective view of the massing ring used from below; Figure 3 is an enlarged cross-sectional view of line I■■-■II in Figure 2; Figure 4 is a vertical cross-section of the main parts of the speaker showing the state in which the massing ring is attached. 5 is an enlarged vertical cross-sectional view of the same essential parts showing the operation of dropping adhesive, and FIG. 6 is a top view.
7 and 7 are for explaining the second embodiment of the present invention, FIG. 6 is a perspective view similar to FIG. 2, and FIG. 7 is a perspective view similar to FIG.
This figure is a longitudinal sectional view similar to FIG. 4, and FIG. 8 is a perspective view similar to FIGS. 2 and 6, showing a modification of the mass ring. In addition, in the symbols used in the drawings, 1...
・Voice coil, 3...Bobbin, 5...
・Cone paper, 10... Masling, 16.20
...Protrusion, 18.22...Void.

Claims (1)

[Scope of utility model registration request] In a speaker consisting of a mass ring attached to the connection between the bobbin around which the voice coil is wound and the paper cone,
At least one of the part of the mass ring that contacts the bobbin and the part of the mass ring that contacts the cone paper is provided with depressions and depressions, and an adhesive is flowed through the gap formed by the depressions and depressions to form the mass. A speaker characterized in that a ring is fixed to at least one of the bobbin and the cone paper.