KR100274720B1 - Assembly method of an audio plug - Google Patents

Abstract

PURPOSE: A method for assembling an audio plug is provided to obtain an audio plug having a good assembly without bad contact by settling respective terminals and soldering terminals by a cocking process and then insulating/fixing respective terminals by injection molding. CONSTITUTION: A method for assembling an audio plug settles soldering terminals(12,14) curved in a shape at each of the rear ends of a plurality of terminals by means of cocking process. Respective terminals are electrically insulated and fixed by means of injection molding.

Description

How to assemble an audio plug

The present invention relates to a method of assembling an audio plug, and more particularly, to a method of assembling an audio plug, which improves associability between components to remove audio noise due to poor contact and improves assemblage to improve production efficiency. will be.

In general, an audio device has a headphone jack and a microphone jack for external input and output to the main body, the headphone and microphone is inserted into this jack at the end of the cord is connected to a rotatable audio plug.

Referring to FIG. 1, a conventional three-pole, stereo audio plug having a 6.3 mm aperture includes a tip terminal, a ring terminal, and a sleeve. In the assembling procedure, a ring-shaped first soldering terminal portion 2 having a terminal piece 2a is fitted into a terminal rod 1 having a locking step 1a formed at a rear end thereof, and the first soldering terminal portion 2 is a terminal. It is caught by the latching jaw 1a of the rod 1, and the ring-shaped first insulating member 2b and the tubular second insulating member 2c are sequentially inserted into the terminal rod 1.

Then, a connecting pipe 3 made of a conductor having a locking step 3a formed at the rear end thereof is fitted into the second insulating member 2c. A ring-shaped second soldering terminal portion 4 having a terminal piece 4a formed in the connecting pipe 3, a third insulating member 4c, and a fourth insulating member 4b having a latching jaw 4bb at the rear end thereof are sequentially formed. Fitted with At this time, the second soldering terminal part 4 is caught by the locking step 3a formed in the connection pipe 3. The ring body 5a of the third soldering terminal portion 5 is fitted to the fourth insulating member 4b. At this time, the ring body 5a of the third soldering terminal portion 5 is caught by the locking step 4bb of the fourth insulating member 4b. On one side of the third soldering terminal portion 5, a wire piece and a terminal piece 5b to be soldered are formed.

Then, the sleeve 6 is fitted to the outer periphery of the fourth insulating member 4b, a male screw portion 6a having a larger diameter is formed on the upper end of the sleeve 6, and the male screw portion A latching jaw 6b is formed at the inner periphery of the upper end of 6a so that the ring body 5a of the third solder terminal part 5 is seated.

In addition, the fifth insulating member 6c is inserted between the inner periphery of the sleeve 6 at the outer periphery of the connecting tube 3 to prevent the connecting tube 3 and the sleeve 6 from contacting each other. 5 A locking width 6cc of a predetermined width is formed at the lower end of the insulating member 6c.

Then, the sixth insulating member between the ring terminal 7 and the terminal rod 1 penetrating through the center axis line of the ring terminal 7 is coupled to the outer peripheral edge of the lower end of the connecting pipe (3) A 7a is inserted into the lower end of the sixth insulating member 7a, and a locking jaw 7aa is also formed. Then, the tip terminal 8 is finally coupled to the distal end of the terminal rod 1 by interference fit.

Accordingly, the locking jaw 6cc of the fifth insulating member 6cc is interposed between the sleeve 6 and the ring terminal 7, and the locking jaw 7aa of the sixth insulating member 7a is the ring terminal 7. ) And the tip terminal 8.

On the other hand, the protective cap 9 is screwed to the male screw portion 6a of the sleeve 6 so as to protect the terminal portion connected to the electric wire.

As described above, the conventional audio plug has a problem that not only the assembly production efficiency is extremely low, but also the cost of the audio plug is increased because many insulating members must be assembled between the terminals.

In addition, when the degree of the sleeve, the ring, the insulating member is lowered, the components are shifted from each other, the insertion of the jacks of the jacks, or caused a poor contact, causing audio noise.

Therefore, in recent years, the method of integrally forming the insulating member by injection molding has been adopted, rather than the assembly method.

Japanese Patent Application Laid-Open No. 56-109472 discloses a technique for connecting solder terminals to connecting tubes and terminal bars after injection molding, respectively. However, since the patented technology allows electrical contact by inserting a soldering terminal portion into a coupling groove formed in an injection-molded insulating member, its contactability is not good, and uniform contact is difficult for each product, resulting in high defect rate due to poor contact. There was a problem of audio noise caused by poor contact.

The object of the present invention is to assemble each terminal and solder terminal by caulking treatment in order to solve the above-mentioned problems of the prior art and then insulated and fixed between the terminals by injection molding, excellent assembly and poor contact It is to provide an assembly method for forming a good audio plug.

Another object of the present invention is to provide an assembly method which can reduce the cost by simultaneously forming the male screw portion of the terminal portion for coupling the safety cap of the audio plug with an insulating material during injection molding.

1 is an exploded perspective view showing the structure of a conventional audio plug.

Figure 2 is an exploded perspective view showing the structure of the audio plug according to the present invention.

3 is a cross-sectional view of a preferred embodiment of an audio plug according to the present invention.

4 is a cross-sectional view of another preferred embodiment of an audio plug according to the invention.

In order to achieve the above object, in the assembly method of the present invention, in a rotatable audio plug having a plurality of terminals having a circular cross section, a soldering terminal portion bent by a letter A at each rear end of the plurality of terminals is bound by a coking process and injection molded. By electrically insulating and fixing each terminal.

In addition, the method of assembling the audio plug includes sequentially inserting the support ring and the soldering terminal portion on the outer circumferential surface of the sleeve and caulking the rear end to bind the first soldering terminal portion to the rear end of the sleeve, and assembling the ring terminal in the sleeve and ring terminals. Fitting the second soldering terminal portion to the rear end of the ring terminal by inserting the second soldering terminal portion on the rear outer peripheral surface of the terminal and caulking the rear end, and binding the terminal rod to the tip portion of the tip terminal to bind the terminal rod in the assembled ring terminal. Inserting the terminal to complete the assembly of the terminal part, seating the assembled terminal part on the injection molding frame, and injecting insulating material to insulate and fix each terminal part, and simultaneously, forming a male part on the rear outer surface of the sleeve; After inserting the heat insulation ring and the third soldering terminal portion to the terminal bar exposed to the rear of the molded insulating material The coking process is characterized in that it comprises the step of binding the third soldering terminal portion to the rear end of the tip jack.

In addition, the assembly method of the present invention includes the step of inserting the male screw portion on the outer peripheral surface of the sleeve and the first solder terminal portion on the support jaw of the male screw portion; Caulking the rear end of the woogo to bind the second soldering terminal part to the rear end of the ring terminal, and to bind the terminal rod to the tip of the tip terminal by binding the terminal rod into the assembled ring terminal to complete the assembly of the terminal part. And seating the assembled terminal part on an injection molding mold, and then insulating and fixing each terminal part by injecting insulating material, and inserting a heat insulating ring and a third solder terminal part into the terminal rod exposed to the rear of the injection molded insulating material. And caulking the rear end of the terminal to bind the third solder terminal to the rear end of the tip terminal. The.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is an exploded perspective view showing the structure of a 6.3mm three-pole audio plug of a preferred embodiment according to the present invention, Figure 3 is a cross-sectional view of the audio plug of an embodiment according to the present invention.

The assembling of the audio plug according to the embodiment firstly installs the support ring 11 on the rear outer circumferential surface of the sleeve 10 by punching, and then the ring body 12a bent in an L shape from the first soldering terminal portion 12. ) And then caulking the rear end of the sleeve 10, the first soldering terminal 12 is supported by the ring body 12a by the support ring 11, and the rear end of the sleeve 10 is unfolded and bound. This caulking treatment can harden the electrical contact between the first soldering terminal portion 12 and the sleeve 10 to eliminate the contact failure.

Next, the tube portion of the ring terminal 13 is inserted into the sleeve 10 to which the first soldering terminal portion 12 is coupled, and the second soldering terminal portion 14 is forcibly fitted to the rear outer circumferential surface of the ring terminal 13. Then, similarly, the rear end of the pipe portion is caulked to bind the second solder terminal portion 14 to the rear end of the ring terminal 13. The ring terminal 13 has a ring 13a having a diameter equal to the outer diameter of the sleeve 10 at the tip end thereof, or is formed in the tube portion or is fitted by an interference fit. The 2nd soldering terminal part 14 is formed with the terminal piece 14a bent in a "-" shape from the ring body. The signal line of the cord is soldered to this terminal piece 14a. The terminal piece 14a has a length sufficient to reduce the transfer of heat to the insulating material during soldering. The terminal rod 15 is forcibly fitted into the insertion groove 16a of the tip terminal 16, and the terminal rod 15 is inserted into the assembled ring terminal 13 to complete the one-step assembly of the terminal portion.

Next, when the assembled terminal part is seated in the injection molding mold, the sleeve, the ring terminal, and the tip terminal are supported to be aligned with concentric lines and to maintain a constant distance from each other. In this way, when the insulating material such as plastic is filled into the mold by the injection method, the insulating material 19 is filled into each empty space between the sleeve, the ring terminal, and the tip terminal.

As shown in FIG. 3, the insulating material 19 insulates and fixes the respective terminal portions, and simultaneously forms a male screw portion 19a on the rear outer circumferential surface of the sleeve 10. When the heat insulation ring 17b and the third soldering terminal portion 17 are inserted into the terminal rod 15 exposed behind the injection-molded insulating material 19, and the rear end of the terminal rod 15 is caulked, the third soldering terminal portion ( 17) is coupled to the rear end of the terminal rod (15). The rear end of the terminal rod 15 is formed with a groove 15a for caulking work. Since the length of the terminal piece 17a of the third soldering terminal portion 17 is relatively smaller than that of the second soldering terminal portion 14, the heat insulating ring 17b can easily transfer heat to the insulating material 19 during soldering. It is to prevent. For the same reason, the third solder terminal portion 17 is not assembled before injection molding.

The fastening member of the elastic member 18c in which the cord is fitted into the fitting groove 18b of the protective cap 18 after being fastened to the male screw portion 19a formed of the insulating material 19 by the cylinder 18a of the protective cap 18. Combine (18d).

As mentioned above, since the 1st and 2nd soldering terminal parts are hardly couple | bonded with each terminal part by a coking process, and after that, it is fixed by an insulating material once again by injection molding, contactability is very excellent.

Figure 4 shows a cross-sectional structure of a three-pole audio plug of another embodiment according to the present invention. Another embodiment is different from the male screw portion for coupling the protective cap is formed of a metal material than the above-described embodiment is formed of a metal material and the remaining parts are the same, so the same reference numerals.

Another embodiment of the assembly method is to insert the male screw portion (10a) on the outer peripheral surface of the sleeve 10, and the ring body 12a of the first soldering terminal portion (12a) to the supporting jaw (10aa) of the male screw portion (10a) by force-fitting. To combine. Since the remaining assembly steps are the same as the above-described embodiment, detailed descriptions are omitted.

As described above, in the present invention, in the 6.3 mm audio plug, the coupling between the terminal portion and the soldering terminal portions is primarily coupled by a coking process, and then, by injection molding, the coupling portion is once again fixed with an insulating material. Since the negative contactability can be maintained excellently, there is no audio noise generated due to poor contact or the like, and the defective rate is reduced, thereby improving productivity.

Claims (3)

In a rotatable audio plug having a plurality of terminals having a circular cross section, And a solder terminal portion bent by a letter at each rear end of the plurality of terminals by a coking process, and electrically insulated and fixed to each terminal by injection molding. Inserting the support ring and the solder terminal portion sequentially on the outer circumferential surface of the sleeve and caulking the rear end to bind the first solder terminal portion to the rear end of the sleeve; Assembling a ring terminal in the sleeve and inserting a second solder terminal portion into the rear outer circumferential surface of the ring terminal and caulking the rear end to bind the second solder terminal portion to the rear end of the ring terminal; Inserting the terminal rod into the tip of the tip terminal and binding the terminal rod and inserting the terminal rod into the assembled ring terminal to complete the assembly of the terminal portion; Seating the assembled terminal part on an injection molding mold and then injecting insulating material to insulate and fix each terminal part and simultaneously form a male part on the rear outer circumferential surface of the sleeve; And And inserting a heat insulation ring and a third soldering terminal portion into the terminal rod exposed behind the injection-molded insulating material, and coordinating a rear end of the terminal portion to bind the third soldering terminal portion to the rear end of the tip terminal. How to assemble an audio plug. Inserting the male screw portion into the outer circumferential surface of the sleeve and inserting the first solder terminal portion into the support jaw of the male screw portion; Assembling a ring terminal in the sleeve and inserting a second solder terminal portion into the rear outer circumferential surface of the ring terminal and caulking the rear end to bind the second solder terminal portion to the rear end of the ring terminal; Inserting the terminal rod into the tip of the tip terminal and binding the terminal rod and inserting the terminal rod into the assembled ring terminal to complete the assembly of the terminal portion; Seating the assembled terminal part on an injection molding mold and then injecting insulating material to insulate and fix each terminal part; And And inserting a heat insulation ring and a third soldering terminal portion into the terminal rod exposed behind the injection-molded insulating material, and coordinating a rear end of the terminal portion to bind the third soldering terminal portion to the rear end of the tip terminal. How to assemble an audio plug.

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