JPS62150999A - Speaker - Google Patents

Abstract

PURPOSE:To draw directly an input conductor from a voice coil without making the total height of a speaker higher and to prevent the disconnection of the lead wire of a voice coil by utilizing a resin film having the sufficient thermal resistance and flexibility in which a conductive layer is formed for the input lead wire of the speaker and for a voice coil bobbin. CONSTITUTION:On the outer surface of a paper cylinder 21, the resin film 22 made of polyimid or polyester which is excellent in thermal resistance and flexibility is wound and adhered. A magnet wire 23 is wound around this film 22 to form the voice coil 24. The starting and finishing ends of the lead wire of the voice coil 24 are electrically connected to one terminal 25 of the conductive layer of copper foil formed on the film 22 by means of soldering, etc. The said film 22 and the conductive layer are continuously extended to the terminal of the speaker. Thus an input lead wire part 27 and a voice coil bobbin part to supply power from the terminal of the speaker to the voice coil, are formed integrally.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to speakers used in various audio equipment, video equipment, communication equipment, and the like.

BACKGROUND ART A conventional speaker has a structure as shown in FIG. 9, as disclosed in Japanese Utility Model Application Publication No. 57-62499.

In FIG. 9, a plate 2 with a center ball 1 is shown.
A frame 6 is connected to a magnetic circuit 5 constituted by a ring-shaped magnet 3 and a ring-shaped upper plate 4, and a diaphragm 8 is fixed to the peripheral edge of the frame 6 with an adhesive or the like together with a gasket 7. A bobbin 10 of a voice coil 9 is coupled to the center of the diaphragm 8 .

The middle part of the bobbin 10 of this voice coil 9 is connected to the damper 1.
1, the voice coil 9 is fitted into the magnetic gap 12 of the magnetic circuit 5 without eccentricity.

In addition, a cap 13 is pasted on the upper surface of the central part of the diaphragm 8, and the lead wires at the beginning and end of the winding of the 11th voice = 1 ile 9 are electrically connected to the gold thread wire 14 of the 2nd water. The gold thread wire 141 is fixed to the bobbin 10. This gold thread wire 14 is installed in a part of the G and L frame 1\6 (connected to the terminal 15).

The voice coil 9 of this conventional speaker is constructed as shown in FIG. 10, and the voice coil 9 is formed by winding a magnet wire 16 around a bobbin 10 made of paper or the like (=16 voices=1). The lead wire 17 at the beginning of winding and the lead wire 18 at the end of winding of this voice coil 9 are wired with gold thread 114a, '1
The gold thread wires 14a, 1 are connected to the wires 4h by soldering, respectively.
4b is fixed to the voice coil bobbin 10.

Problems to be Solved by the Invention However, in the above configuration, the gold thread wire 14 is pulled out from between the Lee diaphragm 8 and the tamper 11 as shown in FIG.
This gold thread 'FA14 must be prevented from contacting the diaphragm 8A') damper 11.
generally has a diameter of 1.21 degrees, so a gap 19 is required between the lower part of the diaphragm 8 and the damper 11. The dimension of this gap 19 must be at least 3 mm, which has the disadvantage that the height of the speaker (H) becomes high.

Furthermore, the lead wire 7 at the beginning and end of the winding of the voice coil 9 is
, 8 are fixed to the bobbin 10 together with the gold thread wire 14, so when input is applied to the speaker and the voice coil 9 vibrates, stress is applied to the fixed portion of the gold thread wire 14.
There was a problem in that the lead wires 17 and 18 of the voice coil 9 were easily broken. To explain in more detail with reference to FIG. 10, when the voice coil 9 oscillates during speaker operation, force is applied to the bobbin-side fixed portions of the gold thread wires 14a and 14b, and the lead wires 17 and 18 of the voice coil 9 move near the gold thread wire fixed portions. The wire may be disconnected. For this reason, it is not only impossible to apply a large input that would cause a large amplitude drop in the voice coil to the speaker, but also has the disadvantage of poor reliability. In recent years, as equipment has become smaller and more space-saving, there has been a desire to develop speakers that are thin and have high input resistance, but conventional speakers have not been able to satisfy this demand.

The present invention solves these problems and aims to provide a speaker that does not increase the overall height of the speaker, has high input resistance, and is highly reliable.
be.

Means for Solving the Problem In order to solve this problem, the present invention provides a heat-resistant, flexible resin film with a conductive layer that connects the voice coil lead wire and the speaker terminal. an input conductor in which the resin film is wound around the cylindrical outer surface of the voice coil, the winding is applied from above the resin film in the cylindrical part, and the lead wires at both ends of the winding are connected to the ends of the conductive layer; It is equipped with a voice coil.

Function: With this configuration, the resin film with the conductive layer electrically connects the voice coil and the terminal, and becomes the input conductor portion of the S speaker. The thickness of the resin film with the conductive layer is very thin, so the resin film can be pulled out to the terminal even if there is almost no gap between the damper and the bottom of the diaphragm.1. There's no need to make it expensive. Furthermore, since the lead wires at the beginning and end of winding of the voice coil are connected to the bobbin part located away from the speaker input conductor part of the resin film, the voice coil vibrates when the speaker is operated and force is applied to the input conductor part. However, the lead wire is hardly affected by this force.

Therefore, a large input can be applied to the speaker without breaking the lead wire, and the reliability of the speaker can be dramatically improved.

Embodiments Hereinafter, embodiments of the present invention will be described based on the drawings.

First, the first embodiment shown in FIGS. 1 to 4 will be described. Reference numeral 21 is a paper cylinder, and a heat-resistant and flexible resin film 22 made of polyimide, polyester, etc. is wrapped around the outer surface of the cylinder. It is glued. This resin film 2
A magnet wire 23 is wound around the voice coil 24.
form. Lead wires at the beginning and end of the voice coil 24 are electrically connected to one end 25 of conductive 1N made of copper foil or the like formed on the resin film 22 by soldering or the like.

In reality, the voice coil 24 is connected at two locations, at the beginning and end of the winding, but FIG. 1(B) shows the connection location of the lead wire 26 at the beginning of the winding. The resin film 1\22 and the conductive layer formed thereon are continuous to the terminal of the speaker. In other words, the input conductor part 27 that supplies power from the speaker terminal to the voice coil 24 and the voice coil bobbin part number are integrated into one piece.

The structure is shown in FIGS. 2 and 3, and explained in detail. The resin film 22 is extended along the terminal section of the speaker, and the voice coil 24 and the terminal are placed on top of this resin film 22. Two parallel conductive layers 28 and 28 are provided which pass through each other, and portions 29 and 29 that connect the lead wires at the beginning and end of the voice coil 24 are solder-plated with copper foil. ing. 30 is a terminal board fixed to the large end surface of the resin film 22;
1.31 is a terminal eyelet fixed to the terminal board 30, and the narrow end 32 of the conductive layer 28.28
．． It is electrically connected to 32 by soldering or the like. Voice coil 24 lead wire and terminal eyelet 31
．． The conductive layer 28, 28 other than the portion connected to the conductive layer 31 is covered with a resin film 33 made of polyester, polyimide, or the like. That is, it has exactly the same structure as a flexible printed circuit board, and the terminal board 30 is attached to it.

FIG. 4 shows a state in which the voice coil with input conductor constructed in this manner is incorporated into a speaker.

In FIG. 4, a play i with a center ball 37
~38, A frame 42 is coupled to a magnetic circuit 41 constituted by a ring-shaped magnet 39 and a ring-shaped upper plate 40, and a diaphragm 44 is fixed to the peripheral edge of the frame 42 together with a gasket 43 with adhesive or the like. The upper part of the paper cylinder 21 of the voice coil 24 is coupled to the center of the diaphragm 44 .

The paper cylinder 21 is held by a damper 45 immediately below where it is connected to the diaphragm 44, and the voice coil 24 is fitted into the magnetic gap 46 of the magnetic circuit 41 without being eccentric. Further, a dust cap 47 is pasted on the upper surface of the central part of the diaphragm 44, and the terminal board 30 is fixed to the frame 42 by relaying the input conductor part 27 integrated with the voice 1-il 24. There is.

In the case of such a configuration, the thickness of the resin film with conductive IM of the input conductor portion 27 is about 0,1snn m.
The gap 48 between the lower part of the diaphragm 44 and the damper 45 is 0.
211 is also sufficient. In other words, it becomes possible to draw an input line directly from the voice coil to the terminal without increasing the total height (H) of the speaker. Furthermore, even when the voice coil 24 vibrates and force is applied to the boundary between the input conductor section 27 and the voice coil bobbin section during speaker operation, the lead wire of the voice-1 coil 24 is
Since the bobbin 1 is connected at a distance from the bobbin 1, almost no force from the operation is transmitted to the connected portion, and the lead wire of the voice coil 24 will not be disconnected. First, by adopting the configuration of the present invention, it is possible to realize a speaker with high input resistance, which can apply a large amount of human power to the speaker power, and which is also excellent in reliability.

Next, a second embodiment shown in FIGS. 5 and 6 will be described. That is, in the second embodiment, a ■-shaped cut 49.4 is formed on both sides of the resin film 22 at the boundary between the bobbin part and the input conductor part.
9 is provided to make it easier to bend the portion that will become the input conductor portion 27 (FIG. 6 50).

The configuration of the base is the same as that of the first embodiment. Shown in Figure 6'! J
- When the voice coil with human power conductor of the second embodiment is incorporated into a speaker, it becomes possible to use the input line directly from the voice coil to the terminal without increasing the overall height of the speaker as in the first embodiment, Furthermore, it is possible to realize a highly reliable speaker in which the voice coil lead wire does not break. Further, since the notches 49 and 49 are made at the boundary where the input conductor part 27 will become, it is easy to bend the part which will become the input conductor part 27, and since this position is determined, there is an advantage that assembly of the speaker is facilitated.

Next, a third embodiment shown in FIG. 7 will be described.

That is, in the third embodiment, arc-shaped notches 51.
51 is provided so that the input conductor portion 27 can be easily bent. The other configurations are the same as in the first embodiment. This third
Even in the example, without increasing the overall height of the speaker,
It is possible to directly draw out the input conductor from the voice coil to the terminal, and it is possible to realize a highly reliable speaker in which the voice coil lead wire is less likely to be disconnected. In addition, the portion that becomes the input conductor portion 27 is easily bent.
Once this position is determined, it is easy to assemble the speaker 41
: There is also the advantage of

Further, a fourth embodiment shown in FIG. 8 will be described. That is, in the fourth embodiment, arc-shaped cuts 52.52 are provided on both sides of the resin film 22 at the boundary between the bobbin section and the input conductor section, and a hole is formed in the center of the resin film 22 between the cuts 52.52. +3 is provided. The other configurations are the same as in the first embodiment.

In this fourth embodiment as well, the input conductor can be drawn directly from the voice coil to the terminal without increasing the overall height of the speaker, and the speaker has excellent reliability since the voice coil lead wire does not break. can be realized. In addition, since the resin film 22 of the input conductor portion 27 is provided with notches 52, 52 and holes 53, it is easy to bend at these parts, and the bending position is determined.
It also makes it easier to assemble the speaker.

In the four embodiments described above, there are four voice coils between the terminals, but the terminals may not be connected.

Effects of the Invention As described above, according to the present invention, a heat-resistant and highly flexible resin film on which a conductive layer is formed is used for the input conductor of a speaker that connects a voice coil and a terminal, and this resin film By using this in the voice coil bobbin, the input conductor can be pulled out directly from the voice coil without increasing the overall height of the speaker, and the speaker is highly reliable as the voice coil lead wire will not break. It can be done, and its practical effects are great.

[Brief explanation of drawings]

Figures 1 to 4 show 11 embodiments of the present invention, Figure 1 (A> and (8)) is a plan view J3 and a front view of the voice coil with input conductor of the speaker, and Figure 2 is the speaker. 3 is a sectional view of the voice coil bobbin with an input conductor before winding the magnet wire, FIG. 4 is a sectional view of the speaker, and FIGS. 5 and 6 are a second embodiment of the present invention. Figure 5 is a developed view of the voice coil bobbin with input conductor before winding the speaker magnet wire.
Figure 6 is a front view of the voice coil with input conductor of the speaker.
Fig. 7 is a developed view of a voice coil bobbin with an input conductor before winding the magnet wire of a speaker according to the third embodiment of the present invention, and Fig. 8 shows the winding of the magnet wire of a speaker according to the fourth embodiment of the present invention. FIG. 9 is a sectional view of a conventional speaker, and FIG. 10 is a side view of a voice coil with an input conductor of a conventional speaker. 21...Paper cylinder, 22...Resin film, 23.
...Magnet wire, 24...Voice coil, 27
... Input conductor section, 28 ... 1j electric layer, 30 ... Terminal board, 31 ... Terminal eyelet, 4
9.51.52...Incision agent Morimoto
Yoshihiro 1st figure tA slot 21-beard cylinder 3θ---Dermina 1L small"-p' 31--Darmip JL eye L-yl- Figure 2Figure 4Figure 5Figure 7Figure 1 ``-112ji Figure 2 Figure 7ρ

Claims (1)

[Claims] 1. A conductive layer connecting the lead wire of the voice coil and the terminal of the speaker is provided on a resin film having heat resistance and flexibility to form an input conductor part, and the resin film is attached to the voice coil. A speaker comprising a voice coil with an input conductor wound around the outer surface of a cylinder, wound on a resin film in the cylindrical part, and having lead wires at both ends of the winding connected to ends of the conductive layer. 2. The speaker according to claim 1, wherein a V-shaped cut is provided in the resin film at the boundary between the bobbin portion of the voice coil and the input conductor portion. 3. The speaker according to claim 1, wherein an arc-shaped cut is provided in the resin film at the boundary between the bobbin portion of the voice coil and the input conductor portion. 4. The speaker according to claim 1, wherein a notch is provided in the resin film at the boundary between the bobbin portion of the voice coil and the input conductor portion, and a hole is provided in the center portion of the resin film.