JP2008108531A - Insertion engagement type connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an insertion engagement type connector capable of being stably used for a long time by a simple constitution. <P>SOLUTION: The insertion engagement type connector 1 is constituted of a pin side jack terminal 2 and a receptacle side jack terminal 3 in which the pin side jack terminal 2 is inserted, and the pin side jack terminal 2 is composed of a tubular grounding terminal 21 having a slit 21s in the axial direction and a signal terminal 22 which is located inside this grounding terminal 21 and has an insertion portion 22a protruding outside the grounding terminal 21, and the receptacle side jack terminal 3 is composed of an inserted terminal 32 in which the insertion portion 22a is inserted and a tubular receptacle side grounding terminal 31 in which the grounding terminal 21 is inserted so as to cover it. The connector 1 is further provided with a spring 7 which surrounds the outer circumference of the grounding terminal 21 and an insulating cover 6 which covers at least a part of the outer circumference of the grounding terminal 21. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to, for example, a fitting type connection terminal for external connection such as an AV device, and in particular, can be used stably over a long period of time.

  For example, AV equipment such as a television receiver, a video tape recorder, a CD player, a karaoke device, etc. is usually fitted to an external connection portion, for example, an RCA (Radio Corporation of America) connector for audio signals. A plurality of combined connection terminals are provided. This fitting-type connection terminal is electrically connected to an external device through a cord when a pin-side jack terminal, also called a plug, is inserted.

  As such a fitting-type connection terminal, conventionally, for example, a plug terminal having a signal terminal in the front in the axial direction and a ground terminal in the rear is inserted into the opening of the receiving jack terminal. (For example, refer to Patent Document 1).

Further, as shown in FIGS. 9 and 10, there is a fitting type connection terminal 10 including a pin side jack terminal 20 and a receiving side jack terminal 30 to which the pin side jack terminal 20 is fitted. The pin-side jack terminal 20 of the fitting-type connection terminal 10 is a cylindrical ground terminal 201 having a slit 201s in the axial direction, and is located inside the ground terminal 201 and extends in the length direction from the center of the ground terminal 201. A signal terminal 202 having an insertion portion 202a protruding from one end edge is provided. The insertion portion 202 a is inserted into the inserted terminal 302 of the receiving-side jack terminal 30 when the pin-side jack terminal 20 is connected to the receiving-side jack terminal 30. Further, the ground terminal 201 of the pin-side jack terminal 20 is fitted to the receiving-side ground terminal 301 of the receiving-side jack terminal 30 so that both are coupled and electrically connected. In the figure, reference numeral 40 denotes an AV device to which the receiving jack terminal 30 is attached, for example, a television receiver. Reference numeral 50 denotes a cord to which the pin-side jack terminal 20 is connected. The tip of the cord 50 and the pin-side jack terminal 20 are covered with an insulating covering portion 60 except for the tip of the ground terminal 201. . This insulation coating portion 60 is usually a molded product molded using a molding material.
JP-A-8-236224

  However, in the configuration described in Patent Document 1, since the plug terminal is provided with the signal terminal in the front in the axial direction and the ground terminal in the rear thereof, the total length of the plug terminal is naturally increased. There was also a problem that the jack terminal had a long overall length. On the other hand, in the latter fitting type connection terminal 10 shown in FIG. 9 and FIG. 10, since the signal terminal 202 of the pin side jack terminal 20 and the ground terminal 201 are disposed coaxially, it is sufficient. Conveniently, the overall length can be shortened while obtaining the contact area. However, since the contact pressure at the fitting portion between the ground terminal 201 and the receiving-side ground terminal 301 is held in the insulating coating portion 60 that is a molded product that covers the outer peripheral portion excluding the tip portion of the ground terminal 201, the contact pressure is short. There is a problem that the fitting becomes loose and the contact pressure of the ground terminal 201 is lowered due to the use in between (the insertion and removal of the pin-side jack terminal 20).

  The present invention has been made to solve the above-described problems, and an object thereof is to provide a fitting type connection terminal that can be used stably over a long period of time.

  In order to achieve such an object, the present invention includes a pin-side jack terminal and a receiving-side jack terminal into which the pin-side jack terminal is fitted, and the pin-side jack terminal has a cylindrical shape having a slit in the axial direction. It consists of a ground terminal and a signal terminal that is located inside this ground terminal and has a plug that protrudes outward from the ground terminal. The receiving jack terminal is a plug that is inserted into the plug of the signal terminal. A fitting-type connection terminal including a terminal and a cylindrical receiving-side ground terminal that is fitted so as to cover the ground terminal, and covers at least a part of the outer periphery of the ground terminal and a spring that surrounds the outer periphery of the ground terminal An insulation coating portion, and the spring is disposed so as to be in direct contact with the ground terminal and covered with the insulation coating portion.

  According to this configuration, since the outer periphery of the cylindrical grounding terminal having a slit in the axial direction is surrounded by the spring, the grounding terminal and the grounded terminal can be connected even if the pin-side jack terminal in use is inserted or removed. The grounding terminal can maintain a stable contact pressure over a long period of time. Moreover, since the spring is covered with the insulating coating portion, the spring does not come out of the predetermined position during use. Furthermore, since the spring is covered with the insulating coating portion, the spring is not visible, and the appearance is not impaired, which is convenient.

  Further, in the present invention, it comprises a pin-side jack terminal and a receiving-side jack terminal into which the pin-side jack terminal is fitted, and the pin-side jack terminal has a cylindrical ground terminal having a slit in the axial direction, It is located inside this ground terminal and consists of a signal terminal with an insertion part protruding outward from the ground terminal. The receiving jack terminal covers the inserted terminal into which the insertion part is inserted and the ground terminal covers it. In the fitting type connection terminal composed of the cylindrical receiving-side ground terminal that is fitted in this manner, a spring that surrounds the outer periphery of the ground terminal, and an insulating covering that covers at least a part of the outer periphery of the ground terminal I have.

  According to this configuration, since the outer periphery of the cylindrical grounding terminal having a slit in the axial direction is surrounded by the spring, the grounding terminal and the grounded terminal can be connected even if the pin-side jack terminal in use is inserted or removed. The grounding terminal can maintain a stable contact pressure over a long period of time. Moreover, since it is only necessary to attach a spring so as to surround the outer periphery of the ground terminal, the configuration is very simple, and it can be applied to existing ones.

  Further, in the present invention, the spring is arranged on the outer periphery of the insulating coating portion and is configured to surround the outer periphery of the ground terminal via the insulating coating portion. According to this configuration, the spring force of the spring can be easily adjusted because the spring is attached after the insulating coating portion is formed. Further, since it is sufficient to attach a spring so as to surround the outer periphery from above the insulating coating portion, the configuration is very simple, and it can be applied to an existing one, which is convenient.

  Moreover, in this invention, a recessed part is formed in the outer periphery of the insulation coating | coated part, and a spring is arrange | positioned in the said recessed part. According to this configuration, the spring is only required to be mounted in the recess formed on the outer periphery of the insulating coating portion, and thus positioning and mounting work are simple. Moreover, since the spring is mounted in the recess, the spring does not come out of the recess during use, which is convenient.

  In the present invention, a plurality of protrusions are provided near the spring on the insulating coating portion so that the spring does not come off from the insulating coating portion. According to this configuration, since the protrusion is provided close to the spring, the spring does not come out of a predetermined position during use. Further, since the spring may be mounted at a position close to the protrusion provided on the outer periphery of the insulating coating portion, positioning and mounting work are simple.

  Furthermore, in the present invention, the ground terminal is provided with a plurality of protrusions close to the spring so that the spring does not come off from the ground terminal. According to this configuration, since the protrusion is provided close to the spring, the spring does not come out of a predetermined position during use, which is convenient.

  According to the present invention, it is possible to obtain a fitting-type connection terminal that can be used stably over a long period of time with an extremely simple configuration.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG. 1 is a cross-sectional view of an essential part showing a schematic configuration of a fitting type connection terminal which is an example of an RCA connector according to an embodiment of the present invention. FIG. 2 is a schematic side view of a pin-side jack terminal shown in FIG. FIG. 3 is an enlarged view of a main part of the pin-side jack terminal shown in FIG.

  As shown in FIG. 1, the fitting-type connection terminal 1 includes, for example, a reception-side jack terminal 3 and a reception-side jack terminal 3 provided in an audio input / output terminal portion of a television receiver 4 that is an AV device. It is comprised from the pin side jack terminal 2 fitted so that it may insert in.

  The pin-side jack terminal 2 is formed of a ground terminal 21 and a signal terminal 22 located inside the ground terminal 21 as shown in FIGS. 1 to 3. The ground terminal 21 is a cylindrical outer conductor having an open end, and a slit 21s is formed in the axial direction. On the rear end side of the ground terminal 21, a connection portion 21 a for connecting the ground wire 51 of the cord 5 is formed. In addition, an insulator 23 made of synthetic resin or the like is provided in the center of the ground terminal 21 to insulate it from the signal terminal 22. At the center of the insulator 23, for example, a through hole 23a is formed, and the signal terminal 22 is attached to the through hole 23a.

  The signal terminal 22 is a pin-shaped conductor, and the tip end side partly protrudes outward from the ground terminal 21 to serve as an insertion portion 22 a to the receiving-side jack terminal 3. Further, a connecting portion 22 b for connecting the signal line 52 of the cord 5 is formed on the rear end side of the signal terminal 22. A pair of core wires of the cord 5 are connected to the connection portions 21 a and 22 b of the ground terminal 21 and the signal terminal 22. That is, the ground line 51 is connected to the connection portion 21a of the ground terminal 21 and the signal line 52 is connected to the connection portion 22b of the signal terminal 22 by soldering, for example.

  The pin-side jack terminal 2 to which the cord 5 is connected is configured to cover at least a part of the outer periphery of the ground terminal 21 by molding using, for example, a molding material made of synthetic resin, except for the tip end side of the ground terminal 21. Insulating coating 6 is formed.

  The receiving-side jack terminal 3 has a connection structure corresponding to the pin-side jack terminal 2 described above, and is fitted so that the inserted terminal 32 into which the inserting portion 22a of the signal terminal 22 is inserted and the ground terminal 21 are covered. It is formed from a cylindrical receiving side ground terminal 31 to be joined. The receiving side ground terminal 31 and the plugged terminal 32 are insulated by an insulator 33 made of, for example, synthetic resin.

  With this configuration, the user can, for example, fit the pin-side jack terminal 2 into the receiving-side jack terminal 3 provided in the audio input / output terminal portion of the television receiver 4 so as to insert the pin-side jack. A desired sound can be heard from a device connected to the cord 5 of the terminal 2, for example, an earphone.

  Thus, according to the present invention, as shown in FIGS. 1 to 3, the ground terminal 21 of the pin-side jack terminal 2 is mounted with the spring 7 so as to directly surround and surround the outer periphery thereof. The spring 7 is made of, for example, a steel material such as stainless steel, has a spring force, and acts to prevent loosening even when the ground terminal 21 is fitted to the receiving-side ground terminal 31. In the illustrated example, the spring 7 rotates only once around the outer periphery of the ground terminal 21, but a plurality of springs 7 may be wound depending on the material or wire diameter of the spring 7 to obtain a desired spring action. Of course.

  Further, in the illustrated example, the ground terminal 21 is provided with a plurality of protrusions 21 c in the circumferential direction in the vicinity of the spring 7 so that the spring 7 does not come off the ground terminal 21 by the protrusions 21 c. ing. For example, if the protrusion 21c is formed so as to protrude at the time of pressing when the ground terminal 21 is formed in a desired shape, a special step for forming the protrusion 21c is not necessary. In the illustrated example, the protrusions 21c are formed on both sides of the spring 7. However, for example, the protrusions 21c on the insulating coating part 6 side may be omitted.

  In the present embodiment having the above configuration, the outer periphery of the cylindrical ground terminal 21 having the slit 21s in the axial direction is surrounded by the spring 7, so that even if the pin-side jack terminal 2 in use is inserted or removed, The connection between the ground terminal 21 and the grounded terminal 31 is not loosened, and the ground terminal 21 can maintain a stable contact pressure over a long period of time. Further, since the protrusion is provided in the vicinity of the spring 7, the spring 7 does not come out of a predetermined position due to insertion / removal during use. Furthermore, since the spring 7 may be attached so as to surround the outer periphery of the ground terminal 21, the configuration is very simple and can be applied to existing ones.

(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 4 is a partial cross-sectional view showing a schematic configuration of the pin-side jack terminal of the fitting-type connection terminal according to the second embodiment of the present invention. In FIG. 4, the portions denoted by the same reference numerals as those in FIGS. 1 to 3 described above are substantially the same, and thus detailed description thereof is omitted here. Hereinafter, the difference from the above-described embodiment will be mainly described.

  In the present embodiment, as shown in FIG. 4, the spring 7 surrounding the outer periphery of the ground terminal 21 is disposed so as to be in direct contact with the ground terminal 21 as in the above-described embodiment. Then, the spring 7 is formed so as to be covered with the insulating coating portion 6. In the same manner as in the above-described embodiment, the insulating covering portion 6 is preliminarily molded by using a molding material made of synthetic resin or the like to attach the spring 7 to the ground terminal 21 and connect the pin-side jack terminal 2 to which the cord 5 is connected. What is necessary is just to carry out simultaneously at the time of shaping | molding.

  According to the present embodiment having the above-described configuration, the spring 7 is covered with the insulating coating portion 6 in addition to the same effects as those of the above-described embodiments, so that the spring 7 may come off from a predetermined position during use. Absent. Moreover, since the spring 7 is covered with the insulating coating part 6, the spring 7 is not visible, and the appearance is not impaired, which is convenient.

(Third embodiment)
Next, a third embodiment of the present invention will be described with reference to FIGS. FIG. 5 is a schematic diagram showing a schematic configuration of a pin-side jack terminal of a fitting type connection terminal according to a third embodiment of the present invention, and FIG. 6 is an enlarged view of a main part of the pin-side jack terminal shown in FIG. . 5 and FIG. 6, the portions denoted by the same reference numerals as those in FIGS. 1 to 4 described above are substantially the same, and thus detailed description thereof is omitted here. Hereinafter, the difference from the above-described embodiment will be mainly described.

  In the present embodiment, as shown in FIGS. 5 and 6, the spring 7 is arranged on the outer periphery of the insulating coating portion 6 and is configured to surround the outer periphery of the ground terminal 21 via the insulating coating portion 6. . In addition, a plurality of projections 61 are provided in the insulating coating portion 6 in the vicinity of the spring 7 so that the spring 7 does not come out of the insulating coating portion 6 by the projection 61. Similar to the above-described embodiment, the protrusion 61 is simultaneously formed using a mold or the like when the pin-side jack terminal 2 to which the cord 5 is connected is molded using a molding material made of synthetic resin or the like. What should I do?

  According to this embodiment having the above-described configuration, the same effect as the above-described embodiment can be obtained, and the spring 7 can be attached after the insulating coating portion 6 is formed, so that the spring force of the spring 7 can be easily adjusted. Can be done. Further, since the protrusion 61 is provided close to the spring 7, the spring 7 does not come out of a predetermined position during use. Moreover, since the spring 7 should just be mounted | worn in the position close | similar to the protrusion 61 provided in the outer periphery of the insulation coating part 6, the positioning and mounting | wearing operation | work are easy. Further, since the spring 7 may be attached so as to surround the outer periphery from the top of the insulating coating portion 6, the configuration thereof is very simple and can be applied to existing ones, which is convenient.

(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described with reference to FIGS. FIG. 7 is a side view of a main part showing a schematic configuration of a pin-side jack terminal of a fitting type connection terminal according to a fourth embodiment of the present invention, and FIG. 8 is an enlarged view of a main part of the pin-side jack terminal shown in FIG. It is. 7 and 8, the portions denoted by the same reference numerals as those in FIGS. 1 to 6 described above are substantially the same, and thus detailed description thereof is omitted here. Hereinafter, the difference from the above-described embodiment will be mainly described.

  In the present embodiment, as shown in FIGS. 7 and 8, the insulating coating 6 has a recess 62 formed on the outer periphery thereof, and the spring 7 is disposed in the recess 62. Similar to the above-described embodiment, the concave portion 62 is simultaneously formed using a mold or the like when the pin-side jack terminal 2 to which the cord 5 is connected is molded using a molding material made of synthetic resin or the like. What should I do?

  According to this embodiment having the above configuration, the spring 7 can be mounted in the recess 62 formed on the outer periphery of the insulating coating portion 6 in addition to the same effects as the above-described embodiment. The installation work is easy. Moreover, since the spring 7 is mounted in the recess 62, the spring 7 does not come out of the recess 62 during use, which is convenient.

  Each embodiment described above is a preferred example of the present invention, but the present invention is not limited to this, and various modifications can be made without departing from the scope of the present invention.

It is principal part sectional drawing which shows schematic structure of the fitting type | mold connection terminal which is an example of the RCA connector which concerns on one Embodiment of this invention. It is a schematic side view of the pin side jack terminal shown in FIG. It is a principal part enlarged view of the pin side jack terminal shown in FIG. It is a partial cross section figure which shows schematic structure of the pin side jack terminal of the fitting type connection terminal which concerns on 2nd Embodiment of this invention. It is a side view which shows schematic structure of the pin side jack terminal of the fitting type connection terminal which concerns on 3rd Embodiment of this invention. It is a principal part enlarged view of the pin side jack terminal shown in FIG. It is a principal part side view which shows schematic structure of the pin side jack terminal of the fitting type connection terminal which concerns on 4th Embodiment of this invention. It is a principal part enlarged view of the pin side jack terminal shown in FIG. It is principal part sectional drawing which shows schematic structure of the conventional fitting type | mold connection terminal. It is a schematic side view of the pin side jack terminal shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fitting type connection terminal 2 Pin side jack terminal 21 Grounding terminal 21c Protruding part 21s Slit 22 Signal terminal 22a Inserting part 3 Receiving side jack terminal 31 Receiving side grounding terminal 32 Inserted terminal 6 Insulation coating part 61 Protrusion 62 Concave part 7 spring

Claims (6)

A pin-side jack terminal; and a receiving-side jack terminal into which the pin-side jack terminal is fitted. The pin-side jack terminal includes a cylindrical ground terminal having a slit in the axial direction, and an inner side of the ground terminal. A signal terminal having an insertion portion projecting outward from the ground terminal, the receiving jack terminal including a plugged terminal into which the insertion portion of the signal terminal is inserted, and the ground terminal. In the fitting type connection terminal consisting of a cylindrical receiving side ground terminal fitted so as to cover,
A spring surrounding the outer periphery of the ground terminal; and an insulating coating covering at least a portion of the outer periphery of the ground terminal; and the spring is disposed so as to be in direct contact with the ground terminal; and A fitting-type connection terminal characterized by being covered with an insulating coating. A pin-side jack terminal; and a receiving-side jack terminal into which the pin-side jack terminal is fitted. The pin-side jack terminal includes a cylindrical ground terminal having a slit in the axial direction, and an inner side of the ground terminal. A signal terminal having an insertion portion protruding outward from the ground terminal, the receiving jack terminal covering the inserted terminal into which the insertion portion is inserted and the ground terminal covering In the fitting type connection terminal composed of the cylindrical receiving side ground terminal to be fitted,
The fitting type connection terminal further comprising: a spring surrounding an outer periphery of the ground terminal; and an insulating covering portion covering at least a part of the outer periphery of the ground terminal.   The fitting type connection according to claim 2, wherein the spring is disposed on an outer periphery of the insulating coating portion and is configured to surround the outer periphery of the ground terminal via the insulating coating portion. Terminal.   The fitting-type connecting terminal according to claim 3, wherein the insulating coating portion has a recess formed on an outer periphery thereof, and the spring is disposed in the recess.   4. The fitting type according to claim 3, wherein a plurality of protrusions are provided in the insulating coating portion in proximity to the spring so that the spring does not come out of the insulating coating portion by the protrusion. Connecting terminal.   3. The fitting type according to claim 2, wherein the ground terminal is provided with a plurality of protrusions in the vicinity of the spring so that the spring does not come off from the ground terminal. Connecting terminal.