KR200231019Y1 - Audio plug with smoller soldering portion - Google Patents

Abstract

The present invention relates to a soldering slim audio plug, in particular a sleeve conductor having a flange between the contact portion and the fastening portion contacted when the jack is inserted; Coaxially with the sleeve conductor, the tip protruding further than the tip of the contact portion, the end protruding further from the end of the fastening portion of the sleeve conductor, and formed at the tip of the tubular fastening portion and having a large diameter; At least one ring conductor having a band-like contact that contacts when the jack is inserted; Coaxially located with the ring conductor, the tip is protruding more than the tip of the band-shaped contact portion, the end is formed of a rod-shaped fastening portion protruding more than the end of the tubular fastening portion of the ring conductor, and formed at the tip of the rod-shaped fastening portion A tip conductor having a tip-shaped contact that is in contact when the jack is inserted; A first band formed between the tubular insulation formed between the fastening portion of the conductor located outside and the fastening portion of the conductor located inside, and the end of the contact portion of the conductor located in the front and the tip of the contact portion of the conductor located in the rear. An insulator integrally formed by injection-molding at least one tubular insulator having a type insulator and a second band-shaped insulator formed at an end of a fastening part of the conductor located outside; It includes a plurality of projecting washer-type terminal pieces that are forcibly fitted to the end of the coupling portion of each conductor. Therefore, in the present invention, the length of each conductor provided to the soldering portion can be reduced to the thickness of the protruding washer-type terminal piece.

Description

Soldering part slim audio plug {AUDIO PLUG WITH SMOLLER SOLDERING PORTION}

The present invention relates to a soldering type slim audio plug, and more particularly, to reduce the length of the holding portion to less than 50% of the length of the terminal portion by improving the structure of the soldering terminal, and to prevent the plug from being easily pulled out of the jack. The present invention relates to a solder slim audio plug that can significantly reduce noise generation.

In general, portable devices such as portable cassette players and electronic dictionaries listen to audio or voice through earphones or small headphones connected by wires to audio plugs having a diameter of 3.5 mm. In addition, a portable telephone such as a PCS makes a hand-free call through an ear microphone connected through an audio plug having a 3.5 mm or 2.5 mm diameter.

Audio plugs can be divided into terminal and gripping parts, and the terminal parts are inserted into and contacted with jacks installed in the audio equipment, and the gripping parts are mounted with soldering terminals for soldering each terminal and wire to the inside, and the plugs are inserted into the jacks, or When pulled out, it serves as a handle. The terminal part is standardized due to the compatibility of the audio device with the earphone or the headphone, but the grip part can be manufactured in various sizes and shapes for each manufacturer.

Recently, miniaturization of portable cassette players or mobile phones has been made competitively. However, in the case of 3.5mm earphone plugs used in these devices, the length of the terminal portion inserted into the jack is approximately 14mm in length, and the grip portion has a length similar to that of the terminal portion. Is not being miniaturized.

1 is an exploded perspective view of the terminal structure of a conventional 3.5mm three-terminal earphone plug, Figure 2 shows a cross-sectional structure of a conventional 3.5mm three-terminal earphone plug.

The terminal structure of FIG. 1 is composed of three terminals of a tip 1, a ring 2, and a sleeve 3. The tip 1 has a contact terminal 1b and a rod-shaped soldering terminal 1a in which a catching groove is formed so as to be caught by a terminal in the jack in order to prevent it from being easily pulled out. The ring 2 has a ring contact terminal 2b and a tubular solder terminal 2a. The sleeve 4 has a contact terminal 4b and a solder terminal 4a divided between the engaging jaws.

Since the injection molding material 4 of the insulating material is filled by the injection process between the respective terminals are electrically insulated from each other.

The gripping portion is then formed by connecting the electric wire 5 corresponding to the soldering portion of each terminal, then sealing the soldering portion by injection molding with the injection molding 6 of the insulating material and finally covering the sealing portion with the soft cover 7. .

In such a conventional plug, the terminal ends of the solder terminals of the terminals are arranged in a stepped manner. That is, the rod-shaped solder terminal 1a of the tip 1 at the core portion has the longest and the solder terminal 3a of the sleeve 3 has the shortest end. That is, since the length of the terminal is longer from the outermost to the deeper part, it forms a three-layer structure and wires corresponding to each layer are connected by soldering, respectively.

Therefore, the length of the terminal portion inserted into the jack is about 14 mm, and the length of the gripping portion protruding from the main body of the portable device is about 3 mm each of the soldering portions of the tips, rings, and sleeves and the interface insulating material, so that a total of 9 mm and the jaw portions of the sleeves are included. Since the sealing thickness of about 3mm, and the thickness of the sealing and the protective cover from the end of the tip occupy about 3mm, the gripping portion as a whole occupies about 15mm.

It was very difficult to reduce the length of the gripping portion to less than 80% of the length of the terminal portion even if the sealing thickness of the locking jaw portion of the sleeve and the thickness of the sealing and protective cover from the end of the tip were reduced.

That is, in the conventional flag, since the soldering portions are configured to form different layers, the length of the holding portion becomes longer in proportion to the number of terminals. Therefore, the length of the gripping portion becomes longer relative to the terminal portion, so that the overall center of gravity of the plug is moved backward, so that the load of the gripping portion is caught by the terminal portion inserted into the jack. Therefore, since the load is biased as a whole, the load acts in the direction to be pulled away from the jack, so the plug may be easily pulled out, and the tip of the plug is biased in the opposite direction to the load, resulting in poor contact between the contact terminals located in the middle. . Since such poor contact acts as a noise to the audio signal, the contact is interrupted due to the fluctuation of the cord line, so that the sound transmitted to the earphone or the headphone is intermittently heard, which may affect the sound quality.

In addition, since the gripping portion protrudes long in the state where the plug is inserted into the audio device, the gripping portion of the earphone plug looks larger than the miniaturization of the main body. In particular, the mobile phone is protruded with a ratio of about 4: 1 compared to the width of the mobile phone.

The object of the present invention is to improve the jack contactability of the terminal by improving the contact portion of the terminal portion by improving the structure of the soldering portion to solve the problems of the prior art, such that the grip portion has a length of less than about 50 to the length of the terminal portion noise due to poor contact It is to provide a soldering slim audio plug that can significantly reduce the occurrence and improve the bonding.

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

2 is a cross-sectional view of a conventional audio plug.

Figure 3 is an exploded perspective view showing the structure of the conductors of the solder thin stereo audio plug according to the present invention.

Figure 4 is a perspective view of the combined state of the soldering portion slim stereo audio plug according to the present invention.

5 is a front view and a right side view of a soldering body slim stereo audio plug according to the present invention.

6 is a cross-sectional view of a soldering portion slim stereo audio plug according to the present invention.

Explanation of symbols on the main parts of the drawings

10 sleeve conductor 12 contact portion

12a, 22a, 24a, 34a; Tip 14: Fastening Part

14a, 22b, 24b, 32b, 34b: fastening part

16: flange 18, 26, 36: terminal piece

18a, 26a, 36a: band 18b, 26b, 36c: through hole

20 ring conductor 22 band-shaped contact

24: tubular fastening portion 30: tip conductor

32: tip type contact part 34: rod type fastening part

40: insulator 42: first tubular insulator

44: second tubular insulator 42a, 44a: tubular insulator

42b, 44b: 1st band type insulation part 42c, 44c: 2nd band type insulation part

50: wire 52: ground wire

54: R signal line 56: L signal line

60: sealing material

In order to achieve the above object, the two-pole audio plug of the present invention has a large diameter and a short length, a sleeve having a flange between a contact portion and a fastening portion contacted when the jack is inserted, a small diameter and a long length, Coaxially located, the tip is protruding more than the tip of the contact portion, the end is a rod-shaped fastening portion protruding more than the end of the fastening portion of the sleeve, and the tip-shaped contact portion formed at the tip of the rod-shaped fastening portion and contacted when the jack is inserted A tip having an excitation tip, a tubular insulation formed between the sleeve and the rod-shaped fastening portion, a first band-shaped insulation portion formed between the end of the tip-shaped contact portion and the tip of the contact portion of the sleeve, and the end of the fastening portion of the sleeve. An insulator integrally formed by injection molding a second band-shaped insulator formed in the insulator; The first washer of the protruding washer type, which is supported, and the corresponding ground wire is soldered, and the protruding washer type second, which is fitted to the end of the rod-shaped fastening portion and is interviewed and supported by the second band-type insulating portion, and the signal line is soldered. A terminal piece is provided.

In addition, the three-pole or larger audio plug of the present invention has a large diameter and a short length, and has a sleeve conductor having a flange between the contact portion and the fastening portion that are contacted when the jack is inserted, and has a middle diameter and a middle length and is coaxial with the sleeve conductor. The tip is protruded more than the tip of the contact portion, and the end is formed with a tubular fastening portion protruding more than the end of the fastening portion of the sleeve conductor, and is formed at the tip of the tubular fastening portion and has a large diameter and is contacted when the jack is inserted. At least one ring conductor with a band contact, having a small diameter and a long length, coaxial with the ring conductor, the tip protrudes further than the tip of the band contact, and the end of the tubular fastening of the ring conductor A rod-shaped fastening portion protruding further from the end, and a tip-shaped contact formed at the tip of the rod-shaped fastening portion and contacted when the jack is inserted. Between the tip conductor with the part, the tubular insulation formed between the fastening part of the conductor located outside and the fastening part of the conductor located inside, and between the end of the contact portion of the conductor located in the front and the contact end of the conductor located at the rear. An insulator integrally formed by injection-molding at least one tubular insulator having a first band-shaped insulator formed on the second insulator and a second band-shaped insulator formed on the end of the fastening portion of the conductor located outside, and the corresponding conductors It is characterized in that it is provided with a plurality of protruding washer-type terminal pieces that are forcibly fitted to the end of the fastening portion of the connecting wire, respectively.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention in detail as follows.

Figure 3 is an exploded perspective view showing the conductor structure of the soldering portion slim stereo audio plug according to the present invention, Figure 4 is a perspective view of the soldering state of the slim type stereo audio plug coupled to the present invention, Figure 5 Front and right side views of the soldering portion slim stereo audio plug according to the present invention, Figure 6 shows a cross-sectional view of the soldering portion slim stereo audio plug according to the present invention.

The stereo audio plug of the present invention largely includes a sleeve conductor 10, a ring conductor 20, a tip conductor 30, and an insulator 40.

The sleeve conductor 10 has a large diameter and a short length and has a flange 16 between the contact portion 12 and the fastening portion 14 contacted when the jack is inserted. The length of the fastening portion 14 is relatively very short compared to the length of the contact portion 12 and its length corresponds to the thickness of the band portion 18a of the protruding washer-type terminal piece 18.

The protruding washer-type terminal piece 18 is inserted into the fastening portion 14 of the sleeve conductor 10 by a through hole 18b of the band portion 18a by force fitting, thereby being physically fastened and electrically connected. It is preferable that the protrusion part 18c of the protruding washer-type terminal piece 18 bends to an 'L' shape. One end of the ground wire 52 is soldered to this protruding portion 18c.

The ring conductor 20 has a median diameter and a median length and is coaxial with the sleeve conductor 10, the tip 24a protrudes more than the tip 12a of the contact portion 12, and the terminal 24b is The tubular fastening part 24 which protrudes more than the terminal part 14a of the fastening part 14 of the said sleeve conductor 10, and is formed in the front end 24a of the said tubular fastening part 24, has a large diameter, and is inserted into a jack It has a band-shaped contact portion 22 in contact with the jack terminal corresponding to the time.

The protruding washer-type terminal piece 26 is physically fastened and electrically connected to the end 24b of the tubular fastening portion 24 of the ring conductor 20 by forcibly fitting the through hole 26b of the band portion 26a. . One end of the R or L signal line 54 or 56 is soldered to the protruding portion 26c of the protruding washer terminal piece 26.

The tip conductor 30 has a small diameter and a long length and is coaxial with the ring conductor 20, the tip 34a protrudes further than the tip of the band-shaped contact 22, and the end 34b is the ring. A terminal coupling portion 34 protruding more than the tubular coupling portion 24 terminal 24b of the conductor 20, and a terminal coupled to the tip 34a of the rod coupling portion 34 and inserted into the jack; It has a tip-shaped contact 32 in contact. The tip contact 32 includes a tapered tip tip 32a.

The protruding washer-type terminal piece 36 is fitted into the end 34b of the rod-shaped fastening portion 34 of the tip conductor 30 by a force fitting of the through hole 36b of the band portion 36a, thereby being physically fastened and electrically connected. . One end of the L or R signal line 56 or 54 is soldered to the protrusion 36c of the protruding washer terminal piece 36.

Insulator 40 includes first and second tubular insulators 42 and 44 formed simultaneously by injection molding.

The first tubular insulator 42 is a contact portion between the tubular insulator 42a formed between the sleeve conductor 10 located on the outer side and the ring conductor 20 located on the inner side, and the ring conductor 20 located on the front side. (22) First band-shaped insulation portion 42b formed between the end portion 22b and the tip portion 12a of the contact portion 12 of the sleeve conductor 10 located behind and the sleeve conductor 10 located outside. And a second band-type insulating portion 42c formed at the end 14a of the fastening portion 14 of the.

The second tubular insulator 44 is a contact portion between the tubular insulator 44a formed between the ring conductor 20 located on the outer side and the tip conductor 30 located on the inner side, and the tip conductor 30 located on the front side. (32) A first band-shaped insulating portion 44b formed between the end portion 32b and the tip end portion 22a of the contact portion 22 of the ring conductor 20 located behind and the fastening portion of the ring conductor 20 ( 24) A second band-type insulating portion 44c formed at the end 24b.

These three conductors are arranged coaxially and then electrically insulated and bonded to each other by inserting an insulator by injection molding into the space between them.

An audio plug is formed by assembling the terminal pieces corresponding to the combination in an interference fit manner. As shown in FIG. 5, the electric wire is soldered to each terminal piece of the formed audio plug and the soldering portion is sealed with the sealing material 60 to complete the audio plug having the grip portion formed as shown in FIG. 6.

The above-described three-pole stereo audio plug has a length t1 of the protruding washer-type terminal piece that prevents electrical short from the length of the fastening portions of each conductor protruding rearward from the center of the flange 16 of the sleeve conductor 10. Since the thickness of the insulating band (t2) is slimmer, the length of the soldering part is shortened as a whole.

Even if the number of poles is increased to 4 poles, 5 poles, 6 poles, or the like, each time one pole is increased, the length of the terminal piece thickness t1 and the insulation band thickness t2 is increased by the length. Accordingly, the ratio of the length of the soldering portion to the jack insertion portion is summarized as follows according to the number of poles by applying specific numerical values.

As shown in the following table, in the case of 2 poles, the jack insertion part is approximately 20%, in the case of 3 poles, approximately 30%, in the case of 4 poles, approximately 40%, and even if 6 poles are applied, they are about 70% or less. It can be seen that it becomes slim.

Poles Number of terminals (t1 = 0.8mm) Number of insulation bands (t2 = 0.6mm) Solder Length 3.5Ø plug (14mm jack insertion length) 2.5 Ø plug (11 mm jack insert length) Mono 2-pole 2 One 2.2 16% 20% Stereo tripole 3 2 3.6 26% 33% Stereo 4-pole 4 3 5.0 36% 45% Stereo 5-pole 5 4 6.4 46% 58% Stereo 6 pole 6 5 7.8 56% 70%

As described above, in the present invention, the length of the soldering portion of the audio plug can be minimized to the length of the terminal piece fastening length, so that the length of the gripping portion of the plug can be reduced to about 70% or less than the length of the terminal portion.

The slimming of the gripping portion can obtain the effect of moving the center of gravity of the plug toward the terminal portion, thereby improving the contactability of the terminal portion inserted into the jack. Such improved contactability prevents noise caused by poor contact of the audio signal, thereby enabling to enjoy high quality sound.

The present invention is not limited to the above-described specific preferred embodiment, and any person having ordinary skill in the art to which the present invention pertains may make various modifications without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

Claims (2)

A sleeve having a large diameter and a short length and having a flange between the contact portion and the fastening portion contacted when the jack is inserted; It has a small diameter and long length and is coaxial with the sleeve, the tip is protruding more than the tip of the contact portion, the end is formed in the end of the rod-shaped fastening portion and the rod-shaped fastening portion protruding more than the end of the fastening portion of the sleeve; A tip having a tip-shaped contact that is contacted when the jack is inserted; A tubular insulation formed between the sleeve and the rod-shaped fastening portion of the tip, a first band-shaped insulation portion formed between the end of the tip-shaped contact portion and the tip of the contact portion of the sleeve, and a second formed at the end of the fastening portion of the sleeve. An insulating material integrally formed by injection molding the two-band insulating part; A protruding washer-type first terminal piece that is forcibly fitted to the fastening portion of the sleeve, is interviewed and supported by the flange, and a corresponding ground wire is soldered; And A soldering-type slim audio plug, comprising: a protruding washer-type second terminal piece that is forcibly fitted to an end of the rod-shaped fastening part, is interviewed and supported by the second band-type insulating part, and a signal line is soldered. A sleeve conductor having a large diameter and a short length and having a flange between the contact portion and the fastening portion contacted when the jack is inserted; A tubular fastening portion having a median diameter and a middle length coaxial with the sleeve conductor, the tip protruding more than the tip of the contact portion, the end protruding more than the end of the fastening portion of the sleeve conductor, and the tip of the tubular fastening portion At least one ring conductor having a large diameter and having a band-shaped contact portion contacted when the jack is inserted; A rod-shaped fastening portion having a small diameter and a long length and coaxial with the ring conductor, the tip protruding more than the tip of the band-shaped contact portion, and the end protruding more than the end of the tubular fastening portion of the ring conductor; A tip conductor formed at the tip of the fastening portion and having a tip-shaped contact portion contacted when the jack is inserted; A first band formed between the tubular insulation formed between the fastening portion of the conductor located outside and the fastening portion of the conductor located inside, and the end of the contact portion of the conductor located in the front and the tip of the contact portion of the conductor located in the rear. An insulator integrally formed by injection-molding at least one tubular insulator having a type insulator and a second band-shaped insulator formed at an end of a fastening part of the conductor located outside; And And a plurality of protruding washer-type terminal pieces that are forcibly fitted to the ends of the fastening portions of the corresponding conductors and to which the corresponding wires are respectively connected.