JPH06296298A - Speaker - Google Patents

Abstract

PURPOSE:To obtain a speaker in which connection between a terminal plate and a gold thread wire drawn out from a voice coil that is a trouble in conventional assembling can be easily performed and the rationalization of production can be attained as a speaker used in every kind of acoustic equipment. CONSTITUTION:Such constitution is employed that a hole into which the terminal plate 7 of a frame 10 is inserted and a louvered part 10b are provided, and the voice coil is coupled with the terminal plate 7 by fitting the terminal plate 7 to which the cord 6 drawn out from the voice coil is connected in the hole and applying bending working to the louvered part 10b. A final assembling product can be obtained by assembling work in one direction from an upper side from first to last without inverting the speaker while the assembling work is performed by throwing by assembling a working device in which the voice coil 4 is connected to the terminal plate 7 via the tinsel cord 6 in a process. Therefore, it is possible to perform automatic assembling by a machine and to perform the rationalization of production.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker used in various audio equipment such as radio and television.

[0002]

2. Description of the Related Art A conventional speaker will be described below with reference to the drawings.

FIG. 7 shows the structure of a conventional loudspeaker. In FIG. 7, 1 is a magnet, 2 is an upper plate, 3 is a lower plate, and the magnet 1 is sandwiched and coupled to form an annular magnetic gap 13. Forming a magnetic circuit 15.

Reference numeral 4 is a voice coil, and the magnetic gap 13 is provided.
The voice coil 4 is supported by a damper 5 so as not to come into contact with the surroundings of the voice coil 4, and both ends of a winding wire 12 wound around the voice coil 4 are connected to a pair of highly flexible gold thread wires 6 and the frame 10
It is pulled out to the attached terminal board 7 from the rear surface side.

Reference numeral 8 is a diaphragm, 9 is a dust cap,
The frame 10 is connected to the upper plate 2, and the vibrating plate 8,
It supports one end of the damper 5.

The terminal plate 7 for the frame 10 is also used.
In general, the terminal plate 7 is attached from the rear surface side of the frame 10 by using a rivet or the like, and in any case, the frame 10 and the terminal plate 7 are attached in advance in the magnetic circuit 15. The method of combining with was taken.

Further, the gold wire 6 connected to the voice coil 4 passes through the window hole of the frame 10 and the hole or notch provided in the terminal 14 of the terminal plate 7, and further in the central axis direction of the voice coil 4. After adjusting the length with an appropriate slack in order to withstand the severe bending due to the vibration of, the solder is soldered to the terminal 14 using the solder 11, and then the gold thread inside the frame 10 is used using tweezers or the like. Line 6 had a habit of Yamagata. These are called forming work, but this work is a skillful work such as adjusting the work while observing the processing state, and of course it is a complicated work that is carried out by rotating it while lifting it to a position that is easy to see and work. Was left to hand work.

[0008]

However, in the above-mentioned conventional configuration, the work of connecting the gold thread wire 6 drawn out from the voice coil 4 to the terminal plate 7 previously joined to the frame 10 requires a forming work, which is a skill. However, the problem is that it is a manual work that requires a lot of work, and there is a problem that it becomes a bottleneck in automating the speaker assembling work using a machine.

Further, for the purpose of solving these problems and rationalizing the production, the inventors can assemble the gold thread wire 6 without adjustment, and assemble it from one direction without changing the posture of the speaker. Japanese Patent Application No. 4-2
As proposed in No. 89875, the speaker has a problem that the component cost is high and the number of assembling steps is increased because another component is added between the terminal plate and the gold wire. there were.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems of the prior art, and to provide a speaker which has an inexpensive structure, can eliminate the forming work, and can improve the efficiency of production by automatic assembly.

[0011]

In order to solve the above-mentioned problems, a speaker according to the present invention has a frame coupled to a magnetic circuit having a magnetic gap, and a voice coil centered on the periphery of the frame and fitted in the magnetic gap. In a speaker in which an outer peripheral portion of a coupled diaphragm is coupled, a hole for inserting a terminal plate in the frame and a cut-and-raised portion are provided in the periphery of the hole, and a voice coil and a terminal plate to which a gold wire drawn from the voice coil are connected are described above. The structure is such that the cut-and-raised part is fitted into the hole, and the cut-and-raised part is bent and joined.

[0012]

With this structure, the voice coil and the terminal plate to which the gold wire drawn from the voice coil are connected are fitted into the holes for inserting the terminal plate provided in the frame, and the cut-and-raised portion provided at the periphery is bent. Not only can it be easily and firmly joined together by using, but the complex forming work by reversing the speaker is not required, and the voice coil, the gold thread wire, and the terminal board can be assembled in a separate process beforehand. By putting it into the speaker assembling process, it is possible to automatically assemble the speaker in only one direction from the front side by the machine, and to realize the efficiency of production.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

It should be noted that the same reference numerals are given to parts having the same configurations as the parts shown in the conventional example. FIG. 1 is a cross-sectional view showing the overall configuration of the speaker according to the embodiment, in which 1 is a magnet, 2 is an upper plate, and 3 is a lower plate. The magnetic circuit 15 having the magnetic gap 13 is formed.
10 is a frame coupled to the upper surface of the magnetic circuit 15;
Reference numeral 8 denotes a diaphragm whose outer peripheral portion is connected to the peripheral edge of the frame 10, and 4 is a voice coil connected to the center of the diaphragm 8. The voice coil 4 has a coil 12 wound around its lower end to form a magnetic gap 13. It is fitted without eccentricity.

Reference numeral 5 is a damper for supporting the voice coil 4 by connecting the peripheral edge to the frame 10 and the inner peripheral portion to the voice coil 4, and 9 is a dust cap connected to the central upper surface of the diaphragm 8. Reference numeral 6 denotes a gold thread wire, one end of which is connected to the coil 12 of the voice coil 4 and which is drawn out, and the other end of which is connected to the terminal 14a of the terminal plate 7 connected to the frame 10 by the solder 11.

2 (a) and 2 (b) are a perspective view showing the terminal plate 7 and a sectional view taken along the line AA 'of the terminal plate 7, with a groove for guiding the gold wire 6 at the tip. A pair of terminals 14a for connecting the gold thread wire 6 and a terminal 14b for external connection in a conductive state are insert-molded to the terminals 14a. Further, a protrusion 7a for fitting into the frame 10 is provided on the lower surface side of the terminal board 7, and the frame 10 is provided on the upper surface side.
Locking portions 7b for fixing after being fitted are provided so as to face each other, and the locking portions 7b are provided with an inclination so that they are raised in opposite directions.

FIGS. 3A, 3B and 3C show the frame 1
FIG. 2 is a perspective view showing 0 and a perspective view of an essential part in the vicinity where the terminal plate 7 is attached. A part of the frame 10 is provided with a hole 10a into which the projection 7a of the terminal plate 7 is fitted, and cut-and-raised parts 10b are provided at both ends of the hole 10a. The cut-and-raised part 10b is provided in a pair, and the lower end of the cut-and-raised part 10b is notched. Also, for reference,
As shown in FIG. 7C, the cut-and-raised portion 10b may have a structure in which the central portion of the upper end is separated.

4 (a), (b) and (c) are partially enlarged perspective views showing a state in which the terminal plate 7 is attached to the frame 10 as shown in FIG. 4 (a). Frame 10
The protrusion 7a of the terminal plate 7 is inserted into the hole 10a provided in the direction of the arrow, and the cut-and-raised portion 10b is formed along the curved surface of the locking portion 7b of the terminal plate 7 as shown in FIG. Bend in the direction and fix.

Further, FIG. 3C shows, for reference, a state in which the cut-and-raised portion 10b shown in FIG.

Next, a method of connecting the terminal plate 7 to the frame 10 will be described with reference to FIG. The necessary strength after connecting the terminal plate 7 to the frame 10 is the strength for the pulling out method shown by the arrow A in the figure, and in order to improve the strength for this pulling out method, the locking portion 7b of the terminal plate 7 has about 10 strength.
There is an inclination of about 10 degrees, and when the cut-and-raised part 10b provided on the frame 10 is bent in the horizontal direction by applying a force from the direction of arrow B or C, the locking part 7b of the terminal board 7 is locked. Upon contact, the above-mentioned forces in the directions of arrows B and C are converted into large forces in the directions of arrows D and E, and the terminal board 7 is pressed downward. Moreover, the above arrows B to C
A relatively small force is sufficient to deform the cut-and-raised portion 10b by applying a force in the direction of.

Further, since the engaging portion 7b of the terminal plate 7 is inclined, a gap as shown by the dimension symbol F in the figure occurs at the beginning of bending of the cut-and-raised portion 10b. Even if variations occur, the binding state is not hindered.

Further, in the mounting structure of the terminal board 7 according to the present embodiment, the user may disconnect the terminal board 7 from the direction of arrow A in FIG. 5 in order to connect the faston terminal or the harness-like connector to the external connection terminal 14b. Therefore, there is a risk that the locking portion 7b of the terminal plate 7 may come loose or fall off, and higher mounting reliability than ever is required.

Therefore, in the structure for connecting the terminal plate 7 to the frame 10 according to the present embodiment, the cut-and-raised portion 10b necessary for the terminal plate 7 to be loosened or dropped is not bent in the plate thickness direction. In addition to the force required to bend the longitudinal direction of the bar-shaped cut-and-raised portion 10b having a plate thickness of a short side and a length of at least 2 to 3 times the length, a plastic deformation of the steel plate The structure is such that it does not loosen or fall off unless a much larger force is applied than when it is attached, and extremely strong attachment strength and high reliability are obtained.

Since the terminal board 7 can be easily attached to the frame 10 as described above, the voice coil 4 and the terminal board 7 are preliminarily separated from each other through the gold thread wire 6 in a separate step as shown in FIG. By preparing the work-in-process product 16 connected by connecting the work-in-process product 16 to the speaker assembling process, the work-in-process product 1 is installed from the front side of the speaker.
6 can be put in and assembled, and the work of reversing the speaker and pulling around the gold thread wire 6 and slackening as in the conventional case is unnecessary, which is a neck of automation of assembly by mechanization. It is possible to solve all the work that has been done at once and realize automatic assembly by one-way assembly from the front side of the speaker.

Further, the frame 10 and the terminal plate 7 do not require any special material or processing, can be easily attached, and have extremely high coupling strength and reliability, so that they are inexpensive and highly reliable. A speaker can be provided. In FIG. 6, reference numeral 17 is a spacer fitted inside the voice coil 4 as a jig for assembling.

[0026]

As described above, since the speaker according to the present invention has a simple structure, the terminal plate can be easily coupled to the frame from the front side of the speaker. Therefore, the voice coil and the terminal plate are preliminarily connected to each other via the gold wire. By preparing a work-in-progress connected to the speaker and putting this work-in-process into the speaker assembling process, complicated drawing and forming work of the gold thread wire are not required, and the work can be done in one direction from the front side of the speaker. It is possible to realize automatic assembly using a machine and greatly improve productivity. Also,
Since the step of connecting the gold wire drawn from the voice coil to the terminal board can be performed in a separate process, the length of the gold wire can be controlled to a predetermined length and the soldering work can be performed stably. It also contributes to the stabilization of quality.

[Brief description of drawings]

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

FIG. 2 (a) is a perspective view showing the configuration of a terminal board according to the same embodiment. FIG.

3A is a perspective view showing a configuration of a frame according to the embodiment, FIG. 3B is a perspective view of a main portion of the frame, and FIG. 3C is a perspective view of a main portion of another embodiment of the frame.

FIG. 4A is a perspective view of an essential part showing a state before the terminal plate and the frame are combined with each other according to the embodiment. FIG. 4B is a perspective view of an essential part showing a state after the connection. Main part perspective view showing an example

FIG. 5 is a cross-sectional view of essential parts showing a method of connecting the terminal plate to the frame according to the same embodiment.

FIG. 6 is a perspective view of a work-in-process product in which a voice coil and a terminal plate according to the embodiment are connected via a gold thread wire.

FIG. 7 is a sectional view showing a configuration of a conventional speaker.

[Explanation of symbols]

 1 magnet 2 upper plate 3 lower plate 4 voice coil 5 damper 6 gold thread wire 7 terminal plate 7a protrusion 7b locking part 8 vibrating plate 9 dust cap 10 frame 10a hole 10b cut and raised part 11 solder 12 coil 13 magnetic gap 14a terminal 14b external Connection terminal 15 Magnetic circuit

Front page continuation (72) Inventor Manaoka Oka, 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. Inventor Yoshiyoshi Hamaguchi Address 1006, Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Yu Fukuda In-house 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. 1006 Kadoma City, Matsushita Electric Industrial Co., Ltd.

Claims (2)

[Claims] 1. A voice coil having a hole into which a terminal plate is fitted and a frame provided with a cut-and-raised portion at the periphery of the hole is coupled to a magnetic circuit having a magnetic gap, and a voice coil fitted in the magnetic gap at the periphery of the frame. The terminal plate provided with an engaging portion on the upper surface, which is provided with a protrusion on the lower portion, which joins the outer peripheral portions of the joined diaphragms and fits into a hole provided in the frame, and which bends the cut and raised portion to contact A speaker in which a cut-and-raised part is bent into a hole provided on the base plate, and the cut-and-raised part is bent and combined, and a gold wire drawn from a voice coil is connected to the terminal plate. 2. The speaker according to claim 1, wherein a terminal plate having an inclined portion is used at a portion that comes into contact when the cut-and-raised portion provided on the frame is bent.