JPH0626175U - Plug-in type audio connector - Google Patents

Abstract

(57) [Abstract] [Purpose] Developed a plug-in type audio connector with a structure that can achieve stable quality both electrically and mechanically while adopting a simple assembly structure. To do. [Structure] A male or female connector member is embedded in a metal shell, and an insulator covered with a metal barrel on the outer surface is housed, and the connector is provided on the rear end side of the insulator. In a plug-in type audio connector formed so that a cable lead wire introduced from the rear of a metal shell is connected to a member, a cushion spring formed on the outer peripheral surface of the barrel. Were formed at three locations at substantially equal intervals in the circumferential direction of the barrel.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention eliminates the structure of the plug-in type audio connector, more specifically, the soldering structure of each connection portion, improves the housing structure of the barrel containing the contact assembly and the metal shell, and further, The present invention relates to the structure of an audio connector that allows the cords introduced into the connector to be connected and attached in a simple and orderly manner.

[0002]

[Prior art]

 Conventionally, a connecting device such as a microphone is connected by a so-called plug-in method to a male or female device-side connector provided on an operation panel or the like on the audio device side. At the rear end, a plug-in type connector having a female or male connector member having a structure corresponding to the device side connector is attached.

The plug-in type connector on the microphone side, which is connected to the connector on the audio device side, is frequently attached to and detached from the device side connector during use, but it is inserted and connected to the counterpart connector. Every time, it must be possible to achieve accurate mechanical and electrical connections. Further, in manufacturing and assembling this audio connector, it is necessary to eliminate complicated work such as soldering work and to assemble it into a connector of mechanically and electrically uniform quality. Few were fully satisfied in these respects.

[0004]

[Problems to be solved by the device]

 In view of the above points, the present invention adopts a simple assembly structure, and at the same time, has a structure capable of realizing stable quality both electrically and mechanically, and is a plug-in type audio connector. The task is to develop

[0005]

[Means for Solving the Problems]

 The structure of the present invention, which has been made to solve the above-mentioned problems, has a structure in which a male or female connector member is embedded in a metal shell and an outer surface is covered by a metal barrel. In addition, a plug-in type audio connector formed so that the lead wire of the cable introduced from the rear of the metal shell is connected to the connector member at the rear end side of the insulator. In this case, the main feature is that the cushion springs formed on the outer peripheral surface of the barrel are formed at three locations at substantially equal intervals in the circumferential direction of the barrel.

[0006]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. 1 is a vertical side view of an example of a plug-in type audio connector according to the present invention, FIG. 2 is a plan view of a barrel in the connector of FIG. 1, FIG. 3 is a right side view of FIG. 2, and FIG. 2 is a sectional view taken along the line AA of FIG. 2, FIG. 5 is a sectional view showing another example of the mounting structure of the noiseless terminal, and FIG. 6 is a side view of an example of the female connector member.

In the figure, reference numeral 1 denotes a tapered taper outer shape, which is formed into a hollow cylindrical portion 1a and has a cable introduction port 1b formed at its rear end, and The front end of the cylindrical portion 1a is a metal shell formed in the entire opening 1c. In addition, 1d is a latch installation portion formed by notching on the upper surface side of the opening 1c of the metal shell 1.

Reference numeral 2 denotes an insulator made of a non-conductive material such as synthetic resin in which three female connector members 3 are embedded. The insulator 2 has a metal outer surface excluding its rear end. Although covered by the barrel 4, the outer shape of the barrel 4 is formed so as to be lightly press-fitted into the cylindrical portion 1c of the metal shell 1.

That is, in the barrel 4, as shown in FIGS. 2 to 4, three cushion springs 4a are formed on the outer periphery of the barrel 4 at equal intervals in the circumferential direction, specifically, at intervals of about 120 degrees. . Each cushion spring 4a has two slits 4b formed along the length of the barrel 4 with an appropriate width on the outer peripheral surface of the barrel 4, and the portion sandwiched between the slits 4b and 4b is the outer surface of the barrel. It is processed so that it bulges slightly to the side, and the elastic force of these bulging surfaces 4a ', 4a "is formed so as to act as a spring force.

As for the installation position of the cushion spring 4a, if the barrel 4 is formed with a latch hole 4c for inserting a later-described latch 5, it is natural to avoid the ratch hole 4c. Are formed at intervals of about 120 degrees. Here, the bulging surfaces 4a ', 4a "of the cushion spring 4a are formed at two positions in the front and rear, but the rear bulging surface 4a" is for holding contact with the metal shell 1 by light press-fitting, and for the front. The bulging surface 4a 'of the metal shell 1 is located in front of the front opening of the metal shell 1 and acts as a spring to hold the mating connector (not shown) in contact with the metal shell.

It should be noted that, in the barrel 4, when the insulator 2 is inserted into a portion sandwiched by the cushion springs 4 a, the insulator 2 serves as a retainer for preventing the insulator 2 from coming out of the barrel 4. A tongue-shaped lance 4d is cut and raised inward. Further, in this barrel 4, 4e is a key for circumferential positioning when inserting into the metal shell 1, and 4f is a front flange of the barrel 4. Although not shown, a lance receiving portion and a key groove are formed on the outer surface of the insulator 2 and the inner surface of the cylindrical portion 1a of the metal shell 1 corresponding to the above-mentioned lances 4d and keys 4e. .

In the example shown in the figure, about half the length of the insulator 2 whose barrel 4 is covered on the outer surface is inserted into the metal shell 1 and fixed to the shell 1 by a fixing screw 2b. Therefore, the latter half side of the cylindrical portion 1a of the shell 1 remains as a space portion, and this space serves as a connection portion with a core wire such as a cable introduced into the metal shell. The amount of insertion of the insulator 2 into the shell 1 causes the front bulge 4a 'of the cushion spring 4a formed in the barrel 4 to be exposed to the outside of the shell 1.

In the illustrated connector, a notch groove 2a for accommodating the latch 5 is provided on the upper surface side of the insulator 2, and the latch 5 is accommodated with a latch spring 5a accommodated in the groove 2a interposed. It is provided. 5b is a latch claw, 5c is a latch operating portion, and 4c is a latch hole formed in the barrel 4 at a position corresponding to the cutout groove 2a.

An annular cable introducing portion 6 is integrally formed on the outer side of the cable introducing opening 1b of the metal shell 1, and the lower half side of the introducing portion 6 is formed. The clamp member 6a to be formed is integrally molded with the metal shell 1. Although not shown, the length of the inner circumference 61a of the clamp member 6a is larger than a half circumference of the inner circumference of the introduction portion 6, that is, slightly larger than 180 degrees, and exceeds 180 degrees of the inner circumference 61a. The raised part is erected substantially straight in the tangential direction. An uneven surface 62a is formed in the circumferential direction on the peripheral surface of the inner circumference 61a of the clamp member 6a.

On the other hand, above the clamp member 6a of the cable introducing portion 6, a substantially semi-annular holding member 6b which is less than a semi-annular shape is arranged, and as shown in FIG. Together, they form a cable clamp part in the cable introduction part 6 communicating with the cable introduction port 1b. The clamp member 6a and the pressing member 6b are tightened and integrated by tightening screws (not shown) provided on both wings of these members 6a and 6b. Further, the inner surface 61b of the pressing member 6b is provided with a convex / concave surface 62b corresponding to the concave / convex surface 62a formed on the inner peripheral surface of the clamp member 6a.

Reference numeral 7 denotes a cable introduction port 1b, and a cable made of rubber, for example, which is fitted into the opening formed by the clamp member 6a forming the cable introduction portion 6 and the holding member 6b. In the bush, for example, a three-core cord 8a is shielded by a shield wire 8b, and a coaxial cable 8 which is entirely covered with an insulating material is inserted through the bush 7 so that the metal shell 1 It is introduced inside. Therefore, the cable introducing port 1b and the cable introducing portion 6 are coaxial with each other via the cable bush 7 by tightening the clamp member 6a and the pressing member 6b with the tightening screw. The bull 8 is tightly tightened, and the cords 8a of the cable 8 are introduced into the metal shell 1. Reference numeral 9 denotes a noiseless code which is introduced into the metal shell 1 in parallel with the cable 8.

Each of the cords 8 a and 9 introduced into the rear space of the metal shell 1 as described above is bound by a cord clamp 10 at their introduction ends. Since the outer diameter of the clamp 10 after bundling is larger than that of the cable introduction port 1b, the cord clamp 10 does not allow the cords 8a and 9 to be removed from the cable bush 7. It also works as a stopper.

Next, the respective cords 8a, the shield wires 8b, and the noiseless cord 9 are connected to the respective connection terminals provided in the insulator 2 inside the metal shell 1. It First, as shown in FIGS. 1 and 6, each cord 8a is clamped by crimping claws 3a and 3b of the crimping terminal portion formed on the rear end side of each connector member 3 by sandwiching the core wire 81a and the coating 82a. Be done. Reference numeral 3c is a contact with the mating connector member formed by cutting and raising the inner peripheral surface of the connector member 3. The shield wire 8b is clamped and crimped by the crimp claw 11a of the asslug 11 mounted on the fixing screw 2b of the shell 1 and the insulator 2. As shown in FIG. 1, the core wire 9a of the noiseless code 9 is connected to the set screw 12a of the noiseless terminal 12 embedded from the rear side of the insulator 2 in the form of being connected to the latch spring 5a. Of.

The noiseless terminal 12 may be embedded between the insulator 2 and the barrel 4 as shown in FIG. In this case, since the terminal 12 is embedded in the outer surface of the insulator 2 between the inner surface of the barrel 4 and the outer surface of the insulator 2, a groove or a groove corresponding to the thickness of the noiseless terminal 12 to be sandwiched is formed. The recess 2b is formed.

In the insulator 2 in which the connector member 3 is embedded, there is a through hole 2b for lightly press-fitting the connector member 3 from the rear of the insulator 2, and the front surface of the insulator 2 is provided. The side has a hole 2b formed in the chamfered opening 2c into which the mating connector member is pushed. Further, on the inner surface of the hole 2b, there is formed a concave portion or hole 2d for fitting a retaining lance 3d formed outwardly to the connector member 3 to be lightly press-fitted.

[0021]

[Effect of device]

 The structure of the audio connector of the present invention is as described above, and the cushion springs of the barrel are arranged at three or more positions at equal pitches in the circumferential direction of the outer peripheral surface of the barrel, so that they are frequently inserted and removed. The contact pressure with the mating connector on the mating connector can be made almost uniform over the entire circumference of the barrel.As a result, in the conventional product, the contact pressure is uneven, so that an eccentric load is applied to the terminals of the mating connector. The contact surface is unevenly worn, and the plating applied to the outer surface of the terminal to improve the contact property is unevenly worn, resulting in poor contact or a change in the contact resistance value. However, these points can be eliminated.

Also, the terminals of the contact members embedded in the insulator and the noiseless terminals pre-assembled in the insulator and the core wires and shield wires of the cords are all connected by soldering. Since it is carried out by screwing or clamping with crimping claws without requiring any soldering work, the assembling property can be greatly improved.

Further, even if soldering is not used, a large tensile force may act on the cable introduced into the metal shell due to the clamping force of the cable introducing portion and the action of the code clamp. Even if there is, the connection state can be sufficiently maintained.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of an example of a plug-in type audio connector according to the present invention.

FIG. 2 is a plan view of a barrel of the connector of FIG.

FIG. 3 is a right side view of FIG.

4 is a sectional view taken along the line AA of FIG.

FIG. 5 is a sectional view showing another example of a noiseless terminal mounting structure.

FIG. 6 is a side view of an example of a female connector member.

[Explanation of symbols]

 1 Metal Shell 2 Insulator 3 Female Connector Member 4 Barrel 5 Latch 6 Code Introductory Section 6a Clamping Member 6b Holding Member 7 Cable Bushing 8 Coaxial Cable 9 Noiseless Code 10 Code Clamp 11 Aer Lug 12 noiseless terminal

Claims (3)

[Scope of utility model registration request] 1. A male or female connector member is embedded in a metal shell, the outer surface of which accommodates an insulator covered by a metal barrel, and at the rear end side of the insulator. A plug-in type audio connector formed so that a cable lead wire introduced from the rear of a metal shell is connected to the connector member, which is formed on the outer peripheral surface of the barrel. A plug-in type audio connector characterized in that cushion springs are formed at three positions at substantially equal intervals in the circumferential direction of the barrel. 2. A male or female connector member is embedded inside a metal shell, and an outer surface of the insulator is covered by a metal barrel, and at the rear end side of the insulator. In a plug-in type audio connector formed so that a cable lead wire introduced from the rear of a metal shell is connected to the connector member, it is insulated from a male or female connector member. The latchless spring or the noiseless terminal abutting on the barrel is embedded in the insulator so as to project from the rear surface thereof, and at the rear end side of the noiseless terminal, the noiseless wire of the noiseless wire introduced into the metal shell is inserted. A plug-in type audio connector, which is provided with a fixing screw or a clamp portion. 3. A rear end side of the male or female connector member embedded in the insulator is formed into a clamp-shaped cord crimp type terminal portion, and a core wire of the cord is formed in the terminal portion. The plug-in type audio connector according to claim 1 or 2, wherein the cover is crimped, and is inserted into and held by a hole-shaped connector member housing portion formed in the insulator from the rear surface of the insulator. .