JP2003299190A - Speaker and connecting terminal therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connecting terminal for speaker by which an external input wire for voice signal input can be connected to a lead wire from a voice coil easily and reliably without forming a terminal substrate on a frame, and improvement of productivity and miniaturization of a speaker can be promoted, and to provide a speaker. <P>SOLUTION: A positive wire and a negative wire of the voice coil 7 are led out to the outside of the frame 6 via lead wires 15, 16. In a state that the one portions of the lead wires 15, 16 are led out to the outside, end portions of the lead wires 15, 16 are fixed on the frame 6 with the end portions of the lead wires 15, 16 electrically insulated, and the lead wires 15, 16 outside the frame 6 are used as terminal members 17, 18 connected to the external input wires. In this way, the speaker 1 is configured. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker connecting terminal used in various audio equipments and a speaker using this connecting terminal. More specifically, the present invention relates to a speaker using the connecting terminal. The present invention relates to a speaker connection terminal that allows an external input line to be easily and easily connected directly to a voice coil, and a speaker with excellent productivity that uses this connection terminal.

[0002]

2. Description of the Related Art Various means have been proposed and practically used for connecting a voice coil or a lead wire whose one end is connected to the voice coil and an external input line for inputting a voice signal from an amplifier circuit. However, in general, a rectangular terminal board is integrally attached to the outer periphery of the frame, and a pair of brass terminal lugs are fixed on this board. Connect the plus side of the voice coil and the minus side to the other terminal lug,
The mainstream is a terminal device that connects an external input line for audio signal input to each terminal lug.

On the other hand, in a certain type of speaker, a lead wire in which a base end portion is connected to a voice coil is directly led out of the speaker, and the tip of the lead wire is directly used as a terminal, or the lead wire is used. There is also known a method of attaching a terminal connector or the like to the tip of the.

[0004]

In the terminal device, the terminal is formed of a relatively expensive member such as brass, and the terminal lug and the faston terminal connected to the terminal lug are required, which suppresses the manufacturing cost. It is not easy, and since the method of attaching the terminals to the terminal board protruding to the outside of the speaker frame is adopted, it is indispensable to attach the terminal board to a part of the outer peripheral portion of the frame, and it is not easy to simplify the frame shape. .

Particularly, in the method of mounting the terminal device on the speaker frame, the size of the frame must be increased in the outer peripheral direction or the height direction, so that the speaker design often has many restrictions and is small. In the case of a loudspeaker, it is fatal that the loudspeaker unit becomes large, and the degree of freedom in loudspeaker design is greatly limited.

Further, in the terminal system in which the lead wire of the voice coil is directly led to the outside, it takes a lot of steps and labor to electrically and mechanically connect the wiring from the amplifier circuit to the lead wire. Therefore, it is not easy to improve the productivity of the speaker, and there is a risk of disconnection, which causes a problem in reliability.

Further, in the terminal system in which a connector or the like is connected to the lead wire of the voice coil led out to the outside, the component cost of this connector is involved and the risk of the lead wire being broken cannot be avoided, so that the same problem as described above is encountered. have.

In view of the above situation, the present invention can easily and surely connect an external input line for inputting a voice signal and a lead wire from a voice coil without forming a terminal board on the frame. An object of the present invention is to provide a speaker connection terminal and a speaker, which can promote productivity and size reduction of the speaker.

[0009]

In order to achieve the above object, the invention according to claim 1 of the present invention draws out the plus wire and the minus wire of the voice coil to the outside of the frame through lead wires respectively. , A part of the drawn-out lead wire is drawn out to the outside, and the tip of the lead wire is fixed to the frame in a state of being electrically insulated, and the lead wire outside the frame is connected to an external input wire. The speaker connection terminal is characterized in that

According to a second aspect of the present invention, in the speaker connection terminal according to the first aspect, the lead wire drawn out of the frame is formed into an arc shape to be a terminal member. At the same time, the tip portion is fixed to the frame in an electrically insulated state.

Further, according to a third aspect of the present invention, in the speaker connection terminal according to the first or second aspect, the lead wire drawn out of the frame is formed in an arc shape to form a terminal member. In addition, the terminal member is bent upward or downward along the frame, and the tip end portion of the terminal member is fixed to the frame in an electrically insulated state.

According to a fourth aspect of the present invention, in the speaker connection terminal according to any of the first to third aspects, the frame is composed of a divisible upper frame and a lower frame. The lead wire is pulled out from the joint portion of each frame to the outside, and a part of the lead wire is pulled out to the outside, and the tip portion is fixed while being sandwiched between the joint portions of the frames. It is characterized by.

Further, a fifth aspect of the present invention is a speaker including the speaker connection terminal according to any one of the first to fourth aspects.

According to a sixth aspect of the present invention, in the loudspeaker according to the fifth aspect, the speaker frame is formed of an upper frame and a lower frame that can be divided, and a dividing portion of each frame. In one of the side walls, one of the opposing peripheral walls of the frame has an engaging concave portion for receiving the lead wire, and the other peripheral frame of the other side frame has a pair of engaging convex portions engaging with the engaging concave portion. It is a speaker characterized by being formed.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, preferred embodiments of a speaker connecting terminal according to the present invention and a speaker having the connecting terminal will be described with reference to FIGS. 1 to 4.
The present invention can of course be modified to configurations other than those shown in FIGS. 1 to 4 without departing from the scope of the invention.

The greatest feature of the present invention is that the plus wire and the minus wire of the voice coil are drawn out of the frame via the lead wires respectively, and a part of the drawn lead wires is drawn out to the outside. Is fixed to the frame while being electrically insulated, and the lead wire outside the frame is used as a terminal member with the external input wire.

The speaker 1 shown in FIG. 1 comprises a pot-shaped yoke 3 and a cylindrical magnet 4 arranged in the yoke 3.
And a magnetic circuit 2 consisting of a pole 5 fixed on the magnet 4, a frame 6 fixed on the magnetic circuit 2, and a magnetic gap formed between the yoke 3 and the pole 5. Winding wire 7a and bobbin 7b
A voice coil 7 consisting of, a damper 8 for holding the voice coil 7 in a constant state, and a ring shape having an inverted dome having a central opening fixed to the voice coil 7 and an outer peripheral part fixed to the frame 6. Center plate 1 that closes the diaphragm 9 and the upper end opening of the voice coil 7 to prevent dust and the like from entering the magnetic gap from the outside.
It is composed of 0 and 0.

As is apparent from FIG. 1, the frame 6 is divided into an upper part and a lower part in a substantially central region, and one lower frame 6a has an upper edge of the yoke 3 whose bottom forms the magnetic circuit 2. The outer peripheral edge portion 8 of the damper 8 is fixed to the ring-shaped flat step portion formed on the inner peripheral portion.
The outer peripheral edge portion 9a of the diaphragm 9 is fixed to a ring-shaped flat step portion formed on the inner peripheral portion of the other upper frame 6b.

As is clear from FIG. 2 or FIG. 4, the frame 6 has, for example, two engaging projections 1 with a required space at opposite portions of the upper edge of the peripheral wall of the lower frame 6a.
1, 12 are formed so as to project upward with a required spacing, and the two engaging projections 11 are provided at a required spacing at opposing portions of the lower edge of the peripheral wall of the upper frame 6b. , 1
Engagement recesses 13 and 14 capable of engaging with 2 are formed by notches facing upward.

More specifically, each of the engaging projections 1 is
A circular arc-shaped notch capable of receiving a lead wire to be applied, which will be described later, is formed in the central portion of the tip edges of the lead wires 1, 12, and the lead wires 15, 16 are held in the notch. When the lower frame 6a is engaged with the engaging recesses 13 and 14 formed in the upper frame 6b, the lead wires 15 and 16 can be securely fixed to the frame 6 without using an adhesive or the like. It is configured so that

The voice coil 7 is a bobbin 7b.
Of the lead wire 15 is connected to one end of the lead wire 15 by pulling out the plus wire almost to the center of the lead wire 16.
The leading end of the plus side lead wire 15 is pulled out to the outside of the frame 6 from between the one engaging convex portion 11 and the engaging concave portion 13 formed in the joint portion of the frame 6, and 2 to 3, the lead wire 15 is bent in an arc shape to form the terminal member 17, and the tip end portion thereof is sandwiched between the other adjacent engaging convex portion 12 and engaging concave portion 14. And then fix it.

Similarly, the lead wire 16 on the minus side is pulled out from the frame 6 from between the engagement convex portion 11 and the engagement concave portion 13 formed on the opposite side of the frame 6 from each other. As is apparent from FIG. 3, the lead wire 16 is bent in an arc shape to form the terminal member 18, and the tip end portion of the lead wire 16 is adjacent to the other engaging convex portion 12 and the engaging concave portion 14.
It is sandwiched between and fixed.

At this time, the lead wire 1 from the voice coil 7
There is no particular limitation on the method of drawing 5, 16 out of the frame 6, but in order to prevent the risk of disconnection more reliably, as shown in FIG. 4, it is drawn tangentially and at least the frame is extended on the extension line. Engagement protrusion 11 for pulling out 6
It is preferable that the engaging convex portion 11 and the engaging concave portion 13 which are formed at the positions where the engaging concave portion 13 and the engaging concave portion 13 are opposed to each other are symmetrical to the above.

Thus, one end of each of the external input wires 19 (plus side) and 20 (minus side) is connected to each of the arc-shaped terminal members 17 and 18 that are drawn out of the frame 6. Is.

The arc-shaped terminal members 17 and 18 formed outside the frame 6 are bent downward (or upward depending on the case) along the frame 6 as shown in FIG. It is possible to minimize the protrusion of the terminal members 17 and 18 to the outside and reduce the overall shape of the speaker 1.

The frame 6 may be made of steel, but when the terminal members 17 and 18 are formed outside the frame 6, an electrical insulation process may be performed.
It is preferable to use a material that does not require such insulation treatment, for example, a plastic material.

In order to assemble the speaker 1 using the above-mentioned components, for example, the bottom portion of the lower frame 6a constituting the frame 6 is fixed to the outer periphery of the upper end of the yoke 3 of the magnetic circuit 2 by means such as bonding. The outer peripheral edge portion of the damper 8 integrally fixing the voice coil 7 is fixed to a ring-shaped flat step portion formed on the inner peripheral portion thereof, and the base end portions thereof are positive and negative wires of the voice coil, respectively. The lead wires 15 and 16 connected to the lower frame 6a are respectively drawn out of the lower frame 6a while being placed in the notches on the upper edge of the engaging protrusion 11 formed on the lower frame 6a, and outside the frame 6, Part of the terminal member 17 is bent in an arc shape,
18 is formed, and then the tips of the lead wires 15 and 16 are held by appropriate means on the notches formed in the upper edges of the adjacent lower engaging protrusions 12.

After that, the upper frame 6b is engaged with the lower frame 6a so that the corresponding engaging protrusions 11 and 12 are inserted into the engaging recesses 13 and 14 formed at the lower edges thereof. Then, the lead wires 15 and 16 are
Engaging projections 11, 12 and corresponding engaging recesses 13, 1
It is securely held by the frame 4 and fixed to the frame 6.

Then, the inner peripheral portion of the diaphragm 9 is fixed to the upper end portion of the voice coil 7, and the outer peripheral portion thereof is fixed to a ring-shaped flat step portion formed on the inner peripheral portion of the upper frame 6b. The speaker 1 is assembled by fixing the center cap 10 to the opening of the coil 7.

When assembling the speaker 1, the one in which the damper 8 is integrally fixed to the outer peripheral portion of the voice coil 7 in advance and the one in which the diaphragm 9 and the center cap 10 are integrated in advance are used. By using it, the speaker can be assembled more efficiently, which is a preferable method.

According to the preferred embodiment described above, the base ends of the lead wires 15 and 16 are electrically connected to the plus and minus wires of the voice coil 7, and the tip ends of the lead wires 15 and 16 are connected to the lower frame 6a and the upper frame 6b. In a state of being sandwiched between the engaging convex portion 11 and the engaging concave portion 13 formed in between, it is pulled out to the outside of the frame 6, and the tip portion thereof is sandwiched and fixed between the adjacent engaging convex portion 12 and the engaging concave portion 14, Lead wire 1 outside the frame 6
Since 5 and 16 are the terminal members 17 and 18, respectively,
By using external input wires 19 and 20 electrically connected to the amplifier circuit and the like to the terminal members 17 and 18, respectively, a relatively expensive member such as brass or a special connection portion is used. Since it is possible to easily connect the voice coil and the external input line, the wiring structure of the speaker can be simplified, the manufacturing cost can be suppressed, and the productivity can be easily improved.

On the outside of the frame 6 of the speaker 1,
Since it is not necessary to separately provide a terminal board or the like, it is possible to secure a sufficient degree of freedom in design, especially when designing a small speaker, and it is possible to reduce the size.

Further, a part of the lead wire extended to the outside of the frame 6 is used as the terminal members 17 and 18, and the tip end portion thereof is sandwiched between the upper frame 6b and the lower frame 6a while being electrically insulated. The lead wires 15 and 16 drawn out to the outside of the frame 6 can be effectively utilized by fixing them by fixing them with the terminal members 17 and 18 fixed to the frame 6.
The external input wires 19 and 20 can be connected to the external input wires 19 and 20 very easily, and the strength against external force applied from the external input wires 19 and 20 to the terminal members 17 and 18 can be further improved. .

Further, by bending the terminal members 17 and 18 along the frame 6, the area of the terminal members 17 and 18 is reduced while suppressing the excessive protrusion of the terminal members 17 and 18 from the frame 6. Since the size can be increased, the speaker 1 can be easily downsized.

Furthermore, the lead wires 15 and 16 drawn out of the frame 6 are connected to the lower frame 6a and the upper frame 6 respectively.
By sandwiching and fixing between b, the terminal members 17,
Since 18 can be easily formed, the productivity of the speaker 1 can be improved more easily.

The speaker 1 provided with the speaker connection terminal shown in the above embodiment is composed of the upper frame 6b and the lower frame 6a which can divide the frame 6, and holds the lead wires 17 and 18 between the two frames. Then, the tip end portion is pulled out to the outside of the frame 6 to form the terminal members 19 and 20, but as a means for fixing the terminal plate to the frame, there is a means shown in FIG.

In FIG. 5, reference numeral 61 denotes an upper frame 61b and a lower frame 61 as in the speaker 1 shown in FIG.
a frame composed of a and a lower frame 6
An engaging projection 62 is formed at a required position on the upper edge of the peripheral wall of the la 1a, and an engaging projection 62 is engaged with the lower edge of the peripheral wall of the upper frame 61b corresponding to the engaging projection 62. A mating recess 63 is formed, and the engaging projection 62 and the engaging recess 63 are formed.
In between, a terminal board 64 provided with a locking piece 64a at one end,
The engaging piece 64a is sandwiched and fixed in a state of being joined to the inner peripheral wall of the frame 61. One terminal lug 65 provided on the terminal board 64 has one end connected to the plus wire of the voice coil. The other end of the lead wire is connected to the other terminal lug 66 with the lead wire to which the minus wire is attached, and to the terminal lugs 65 and 66 with the external input wire. The speaker itself is basically the same as that shown in FIG. 1, but its structure is not particularly limited.

The means for fixing the terminal board to the frame is
Compared to the method of integrally molding the terminal board in advance on the frame or the method of fixing it later using screws, the terminal board can be attached to the frame securely and easily, and the terminal board can be bent. By forming the material, similarly to the above-described embodiment, the terminal plate protruding from the frame is bent along the side wall of the frame,
The amount of protrusion can be adjusted, and further, since it is not necessary to fix it by using an adhesive or the like, it has an advantage that it can be separately discarded and parts can be reused.

[0039]

According to the speaker connection terminal and the speaker of the present invention, it is possible to easily form a terminal member that can be connected to an external input line outside the frame without providing a terminal substrate or the like on the frame. In addition, the wiring structure of the speaker can be greatly simplified, the speaker itself can be downsized, and the speaker manufacturing process can be reduced to improve productivity, which is a great practical advantage. Is.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a speaker according to the present invention.

FIG. 2 is a side view showing the same speaker.

FIG. 3 is a schematic plan view showing the same speaker.

FIG. 4 is a schematic plan view showing a state in which an upper frame of the speaker is removed from the same as above.

FIG. 5 is a schematic explanatory view showing an example of terminals of another speaker of the present invention.

[Explanation of symbols]

1 speaker 2 magnetic circuit 6 frames 6a Upper frame 6b lower frame 7 voice coil 11, 12 Engagement protrusions on the lower frame 13, 14 Upper frame engaging recess 15,16 Lead wire connected to voice coil 17, 18 Lead wire terminal member 19,20 External input line

Claims (6)

[Claims] 1. A positive and negative wire of a voice coil is drawn to the outside of the frame through lead wires, respectively, and a part of the drawn lead wire is drawn to the outside, and the tip of the lead wire is drawn to the frame. A speaker connection terminal, characterized in that the lead wire outside the frame is fixed as a terminal member to an external input wire. 2. A lead wire drawn out of the frame is formed into an arc shape to serve as a terminal member, and a tip end portion of the lead wire is fixed to the frame in an electrically insulated state. The speaker connection terminal according to claim 1. 3. The lead wire drawn out of the frame is formed into an arc shape to form a terminal member, and the terminal member is bent upward or downward along the frame so that the tip end portion of the terminal member is The speaker connection terminal according to claim 1 or 2, wherein the speaker connection terminal is fixed to the speaker in an electrically insulated state. 4. The frame comprises a divisible upper frame and a lower frame, wherein the lead wire is drawn out from a joint portion of each frame, and a part of the lead wire is drawn out. The speaker connection terminal according to any one of claims 1 to 3, wherein the front end is fixed in a state of being sandwiched between the joints of the respective frames. 5. A speaker comprising the speaker connection terminal according to any one of claims 1 to 4. 6. The speaker according to claim 5, wherein the speaker frame is formed of an upper frame and a lower frame that can be divided, and the divided frame of each frame is provided on opposite peripheral walls of one of the frames. , The engaging recess for receiving the lead wire,
A speaker, characterized in that a pair of engaging projections that engage with the engaging recesses are formed on opposite peripheral walls of the frame on the other side.