JPH1013995A - Speaker diaphragm and speaker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate a soldering operation and to improve productivity by soldering a terminal line of a voice coil and conductive material for an external signal input through a cot part which is made in a neck part opening part of a diaphragm. SOLUTION: A coil bobbin 5 of a voice coil 4 is inserted into a neck part opening part 32 which is formed in a central part of a diaphragm 1 and fixed by an adhesive. A terminal line 4a of the coil 4 crawls on the bobbin 5, and the part 2 is provided with a cut part 3 at, at least two places, corresponding to the line 4a. At the time of assembling, the bobbin 5 is inserted into the part 2 of the diaphragm 1, the line 4a and conductive material for an external signal input are soldered together through the part 3, and the neck part of the diaphragm 1 and the bobbin 5 are fixedly attached to each other with an adhesive. At this time, the cut parts 3 are closed by the adhesive. Then, the neck part of the diaphragm 1 becomes almost as high as a damper 18, and then three-point adhesion is possible, i.e., the damper 18, the bobbin 5 and the diaphragm 1 can be adhered to one another.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a diaphragm for a speaker and a speaker, and more particularly to a speaker which facilitates the work of soldering a terminal wire of a voice coil and a lead wire for inputting an external signal and has improved performance. The present invention relates to a diaphragm for use and a speaker.

[0002]

2. Description of the Related Art As shown in FIGS. 7 and 8, in a conventional speaker assembly, a voice coil 14 is inserted into an opening 12 which is provided at a center portion of a diaphragm 11 and is called a neck portion. Insert the coil bobbin 15 and fix it with adhesive.
The wiring structure is such that a terminal wire of the voice coil 14 crawling on the coil bobbin 15 and a lead wire such as a tinsel wire for inputting an external signal are soldered. In the figure, 16 is a magnetic circuit unit, 17 is a chamber, 18 is a damper, and 19 is a frame.

As shown in FIGS. 9 to 12, there are various types of wiring structures. In FIG. 9, a conductive damper 18 having a conductive portion 18a provided on a damper is used. FIG. 10 shows a form in which the terminal wire 14a of the coil 14 is soldered 20 and FIG. 10 shows a form in which a lead wire 21 is directly outputted from the coil bobbin 15 via the solder 20 or the like, which is called a connecting voice coil. Is the terminal line 1
4a is laid on the diaphragm 11, and the lead wire 21 led from the back side of the diaphragm 11 is soldered 20 on the diaphragm, which is the most commonly used form since before. . FIG. 12 shows an embodiment in which a coaxial tweeter 22 is arranged. The lead wire 21 is led out from the soldered portion 20 on the diaphragm shown in FIG.
This is the format to connect to.

[0004]

However, the conventional wiring method has various inconveniences particularly in the structure of soldering the terminal line 14a and the external signal input line.
For example, in FIG. 10, in the height direction of the coil bobbin 15, the inner diameter of the damper 18, the lead wire 21, and the inner diameter (neck) of the diaphragm 11 are different in height, and the coil bobbin 15 has a corresponding height. There is a disadvantage that a height (length) is required.

In the case of using the conductive damper 18 shown in FIG. 9, the height of the damper body and the height of the conductive portion 18a are the same, but the inner diameter of the damper and the inner diameter (neck) of the diaphragm 11 are different. The heights were different.

In the wiring structure shown in FIGS. 11 and 12, since the lead wire 21 is connected to the diaphragm 11, it has been pointed out that an imbalanced load may be applied to the diaphragm 11. is there.

SUMMARY OF THE INVENTION An object of the present invention is to provide a speaker diaphragm in which it is extremely easy to solder a terminal line of a voice coil to an external signal input line, and to shorten the coil bobbin length by using the diaphragm. To provide a speaker with improved performance.

[0008]

A speaker diaphragm according to the present invention has at least two cutouts in the neck opening of the diaphragm corresponding to the terminal wires of the voice coil.

Further, in the speaker according to the present invention, at least two notches corresponding to the terminal lines of the voice coil are provided in the neck opening of the speaker diaphragm, and the terminal lines are connected to the terminal lines through the notches. The conductor for external signal input is soldered, and the notch is closed with an adhesive for bonding the neck and the coil bobbin.

[0010]

Since at least two notches corresponding to the terminal lines of the voice coil are provided in the opening of the neck portion of the diaphragm, the terminal lines of the voice coil and the conductive material for inputting an external signal are provided through the notches. The body can be soldered, the soldering operation is easy, and the soldering portion is at the same height position as the inner diameter portion of the damper or at a height position closer to the inner diameter portion of the damper. The neck portion and the coil bobbin are adhered with an adhesive. At this time, the notch is closed with the adhesive.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a speaker diaphragm and a speaker according to the present invention will be described with reference to FIGS. 1 to 6. The same components as those of the prior art described with reference to FIGS. Are denoted by the same reference numerals and description thereof will be omitted.

In FIG. 1, reference numeral 1 denotes a diaphragm, and 2 denotes a neck opening formed at the center of the diaphragm 1. The coil bobbin 5 of the voice coil 4 is inserted into the neck opening 2 with an adhesive. Fixed. The terminal wire 4a of the voice coil 4 runs on the coil bobbin 5, and in the present invention, the opening 2 is provided with at least two cutouts 3 corresponding to the terminal wire 4a.

We have provided a speaker diaphragm in which a slit-shaped portion is provided in an opening of a neck portion of a diaphragm so that an adhesive flows down from the slit-shaped portion when the neck portion is bonded to a coil bobbin of a voice coil. In the present invention, a semicircular cutout 3 is provided in the opening 2 corresponding to the terminal wire 4a of the voice coil 4 in the present invention. The notch 3 is used to solder the terminal wire 4a to a conductor for inputting an external signal.
This is for escaping the soldering portion when performing. The shape of the notch 3 is arbitrary, may be completely cut out, or the remaining piece may be hung downward as shown in FIG.

When assembling, a coil bobbin 5 is inserted into the neck opening 2 of the diaphragm 1 and the terminal wire 4a and a conductor for inputting an external signal are soldered 10 through the notch 3, The neck portion (inner diameter portion) of the diaphragm 1 and the coil bobbin 5 are fixed by bonding with an adhesive. At this time, the notch 3 is closed by the adhesive.

FIGS. 3 to 6 are cross-sectional views of a main part of a speaker using the diaphragm 1, and FIGS.
10 shows a speaker corresponding to FIG. 10, FIG. 5 shows a speaker corresponding to FIG. 11, and FIG. 6 shows a speaker corresponding to FIG. In FIG. 3, a conductive damper 18 having a conductive portion 18a provided on a damper body is used, and the inner end of the conductive portion 18a and the terminal wire 4a are soldered.
0 has been set.

When comparing the example of FIG. 3 with the conventional example of FIG.
Are located at the same height, but can be soldered from the notch 3, so that the neck (inner diameter) of the diaphragm 1
With respect to the height positional relationship between the vibration plate 1 and the damper 18, the neck portion of the diaphragm 1 can be set at almost the same height position as the damper 18. That is, so-called three-point bonding of the damper 18, the coil bobbin 5, and the diaphragm 1 becomes possible.

As described above, the advantage that the neck portion of the diaphragm 1 can be set at a lower position is the same in the structure of FIG. 4 corresponding to FIG.
In FIG. 5, unlike the one shown in FIG. 11, the terminal wire 4a and the lead wire 21 can be soldered on the coil bobbin 5. In FIG. 5, reference numeral 7 denotes a sub-cone.

Further, as shown in FIG.
12, the lead wire 21 led out to the tweeter 22 can be pulled out from the coil bobbin 5 unlike the conventional one in which the coaxial tweeter 22 is attached. In this case, even when the soldering portion 10 is located above the neck portion of the diaphragm 1, the diaphragm 1 can be set later, and the degree of freedom in the production process is increased.

[0019]

According to the speaker diaphragm of the present invention, the terminal wire of the voice coil and the conductor for inputting an external signal are soldered through the cutout provided in the neck opening of the diaphragm. Therefore, the soldering operation is easy, and the productivity can be improved.

According to the loudspeaker according to the present invention, (1) For example, in a type using a conductive damper or a connecting voice coil type, the height of the inner diameter portion of the damper and the neck portion (inner diameter portion) of the diaphragm. Can be matched, so that the overall length (height) of the coil bobbin can be shorter than that of the conventional one. (2) It is possible to manufacture even when the inner diameter of the diaphragm hits the solder portion of the coil bobbin. (3) Due to the effects of (1) and (2), when diaphragms having the same depth are used, a speaker having a low overall height can be produced. (4) Due to the effects of (1) and (2), the overall height of the coil bobbin is reduced, the bending of the neck portion of the diaphragm and the coil bobbin is reduced, the rigidity is increased, and the sound quality is improved. And so on.

[Brief description of the drawings]

FIG. 1 is a plan view of a speaker diaphragm according to the present invention.

FIG. 2 is a cross-sectional view of a speaker diaphragm.

FIG. 3 shows an embodiment of the speaker according to the present invention, and is a cross-sectional view of a main part of the speaker using a conductive damper.

FIG. 4 is a cross-sectional view of a main part of a loudspeaker of the type using a connecting voice coil.

FIG. 5 is a sectional view showing an example in which lead wires are directly connected to the coil bobbin from the front side of the diaphragm.

FIG. 6 is a cross-sectional view of a main part showing a wiring format for a coaxial tweeter.

FIG. 7 is a plan view of a conventional speaker diaphragm.

FIG. 8 is a sectional view of a conventional speaker.

FIG. 9 is a sectional view of a main part of a speaker using a conventional conductive damper.

FIG. 10 is a cross-sectional view of a main part of a conventional loudspeaker of a connecting voice coil type.

FIG. 11 is a cross-sectional view of a main part of a conventional speaker in which a soldering point is on a diaphragm.

FIG. 12 is a cross-sectional view of a main part showing a wiring format for a conventional coaxial tweeter.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Diaphragm 2 Neck opening part 3 Notch part 4 Voice coil 4a Terminal wire 5 Coil bobbin 10 Soldering 18 Damper 18a Conductive part in conductive damper 21 Lead wire such as tinsel wire for external signal input

Claims (2)

[Claims] 1. A speaker diaphragm, wherein notches are provided in at least two places at neck opening portions of the speaker diaphragm corresponding to terminal lines of the voice coil. At least two notches corresponding to the terminal wires of the voice coil are provided in the neck opening of the speaker diaphragm, and the terminal wires and a conductor for inputting an external signal are provided through the notches. Wherein the notch is closed with an adhesive for bonding the neck portion and the coil bobbin.