JPH056694U - Conductive terminal - Google Patents

Abstract

(57) [Summary] [Object] To provide a conductive terminal 1 in which the number of cuts of the conductor 7 of the covered electric wire 9 is reduced, the connection reliability is excellent, the cost is low, and the manufacturing is easy. In a housing of an electric connector, a conductive terminal made of a conductive plate material is press-fitted into a covered electric wire inserted into the housing to electrically connect, and a flat portion is provided at a lower end of the conductive terminal 1. Two left and right symmetrical tip portions 2 and 3 are provided, and contact slope portions 4 and 5 are formed inside the conductive terminal 1 symmetrically when viewed from the side, and between the contact slope portions 4 and 5. The parallel groove portion 6 is provided,
The conductive terminal 1 has a side surface formed in a flat shape.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a conductive terminal forming an electrical contact of a connector used for connecting an electric device such as a telephone or a personal computer.

[0002]

[Prior art and its problems]

The main body of the telephone and the handset, or the main body of the telephone and the terminal mounted on the wall or the like are connected by a covered electric wire. Recently, an electrical connector has been widely used for connecting a modular plug having a conductive terminal which is press-fitted into a covered electric wire at these electrical connection points to form an electrical contact with a modular jack. FIG. 5 shows a conventional modular plug A ', in which a plurality of conductive terminal receiving holes E'are provided in parallel in a housing B'of the plug. Thus, modular plug A 'is a modular jack (not shown) is inserted into the modular plug A' conductive terminals 1 in the "upper C 'of are in contact with and electrically connected to the contact portion of the modular jack side. 6 (b) is "in the first conventional example of a method tip G 'is covered electric wire 9' to connect to pierce the conductive terminals 1" conductive terminal 1 tip G 'of the covered electric wire 9' is obtained by magnifying a state before piercing the. 'at the lower end of the covered electric wire 9' conductive terminal receiving holes E coated electric wire insertion holes D which enters' are communicated, and is opened. FIG. 6 (b) shows a cross-sectional view of a state in which the connection is completed. However, that since in the method according piercing penetration often covered electric wire 9 'is disconnected, susceptible to conduction failure, occurs a change in connection resistance There was a shortcoming, namely Shin Reliability tests such as thermal shock tests and temperature / humidity cycle tests have not reached a level where changes in contact resistance can be ignored Next, as shown in Fig. 7 (a), the tip H'of the conductive terminal 1 '"is staggered. Jo bending giving the process, 'in the second conventional example of a method of sandwiching the conductive terminals 1' covered electric wire 9 '' is that shown enlarged state before sandwiching the covered electric wire 9 '. FIG. 7 (b ) Is a cross-sectional view as seen from the side with the connection completed.However, this type of conductive terminal 1 '''not only requires a great deal of zigzag bending work, but also has a zigzag arrangement. going on for, or tilted when you inserted into the plug housing, fallen would like assembly has the disadvantage that it is not easy. it if the pressure due to jamming but borrow the moment bending the covered electric wire 9 'for relatively soft Contact pressure due to Has a drawback that the fluctuation of contact resistance cannot be neglected in reliability tests such as thermal shock test, temperature and humidity cycle test, etc. So, as of June 4, 1991, By devising a conductive terminal 1 ′ having a shape as shown in FIG. 3, the above-mentioned conventional technical problems could be solved, but when the wire is pressed into the covered electric wire 9 ′, the tip of the conductive terminal becomes sharp and thin. As a result, there is a new drawback that the tip expands.

[0003]

[The purpose of the device]

In order to solve these drawbacks, the present invention has made diligent studies, and as a result, provides a conductive terminal 1 which reduces the cutting of the conductor 7 of the covered electric wire 9 and has excellent connection reliability, which is inexpensive and easy to manufacture. The purpose is to make a conductive terminal that is electrically connected by press-fitting a conductive terminal made of a conductive plate material into a covered electric wire inserted in the housing inside the housing of an electrical connector. the two tip 2,3 symmetrical having a flat portion at the bottom tip of the conductive terminal 1 is provided, and, respectively symmetrically contact the inclined surface portion 4, 5 as viewed from the side to the inside of the conductive terminals 1 s The conductive terminal is characterized in that a parallel groove portion 6 is provided between the contact slope portions 4 and 5, and the side surface is formed in a flat shape.

[0004]

【Example】

 Hereinafter, the conductive terminal of the present invention1Embodiments will be described in detail with reference to the accompanying drawings. FIG. 1 (a) shows the conductive terminal of the present invention.1FIG. 1B is a cross-sectional view seen from the side surface. Conductive terminal1Is made of a conductive thin plate and has a conductive terminal1Two symmetrical left and right end portions 2 and 3 having a flat portion are provided at the lower end of the1Two contact bevels 4 and 5 are formed symmetrically from the side, respectively, inside of the contact, and parallel grooves 6 are provided between the bevels 4 and 5, so that the side faces are flat without bending. It is a structure formed in the. FIG. 2A shows the conductive terminal of the present invention.1Covered wire9FIG. 2 (B) is a plan view of the lower end of FIG. 2 (A), in which the connection is completed by press-fitting into the connector. Since the structure is as described above, the conductive terminal of the present invention is used as the first step.1Is inserted into the conductive terminal receiving hole in the connector housing, and the tips 2 and 3 are covered wires.9To reach. As the second stage, conductive terminals1When press-fitting, the projecting blade pierces the sheath (cover) 8 and9The conductor 7 of is inserted between the two contact slope portions 4 and 5 symmetrically provided, and the covered electric wire9The conductors 7 form a meandering array portion 10 with plastic deformation in opposite directions. As the third stage, conductive terminals1Is further pressed, the covered electric wire9The conductor 7 is further pressed from the two contact slope portions 4 and 5 in the inner direction of the parallel groove portion 6 with plastic deformation. Thus, the parallel groove portion 6 and the meandering arrangement portion 10 of the conductor 7 provide a reliable connection. Conductive terminal having flat portion of the present invention1Conductive terminal filed earlier with a sharp tip 1 (See FIG. 3) was compared by a thermal shock test, and as a result, the change value of the contact resistance of the present invention was 10 mmΩ or less, which was reduced by about 50% and good results could be obtained. In other words, the conductive terminal of the present invention having a flat portion1Is a conductive terminal with a sharp tip1Since the strength is stronger than ′, the spread of the tip is suppressed and the coated electric wire9The force to pinch the9The creep of is also absorbed and it can be connected reliably, and a highly reliable connection can be achieved. Also, the conductive terminal of the present invention1Since the tip end portions 2 and 3 are arranged on the same plane, they can be easily assembled without tilting or falling when inserting into the plug housing. Furthermore, the conductive terminal of the present invention1It is possible to continuously manufacture a thin conductive plate material by press punching.

In the embodiment of the present invention, the conductor 7 of the covered electric wire 9 has been described as a multi-core wire (stranded wire), but a single wire may be used. Further, the parallel groove portion 6 of the conductive terminal 1 may be slightly widened, and it goes without saying that various modifications are included within the scope of the present invention.

[0006]

[Effect of the device]

As is apparent from the above description, the conductive terminal 1 of the present invention is gas-tight (airtight), reliable, strong, and surely connected due to the parallel groove portion 6 and the meandering arrangement portion 10 of the conductor 7. It is possible. Moreover, since the conductive terminal 1 of the present invention has an extremely simple shape, it is easy to manufacture. In particular, since it has an excellent effect that it can be manufactured at low cost by continuous press working using a strip-shaped plate material, it has great industrial value.

[Brief description of drawings]

FIG. 1A is a plan view of a conductive terminal 1 for a connector of the present invention. (B) is a cross-sectional view as seen from the side surface thereof.

FIG. 2A is a cross-sectional view seen from the side in a state where the conductive terminal 1 of the present invention is press-fitted into the covered electric wire 9 and the connection is completed. 2B is a plan view of FIG. 2A viewed from the lower end.

FIG. 3A is a plan view of a conventional connector conductive terminal 1 ′. (B) is a cross-sectional view as seen from the side surface thereof.

FIG. 4 is a cross-sectional view seen from the side in a state where a conventional conductive terminal 1 ′ is press-fitted into a covered electric wire 9 ′ and connection is completed.

FIG. 5 is a perspective view of a conventional modular plug A ′.

FIG. 6A is a perspective view of a conventional example in which the tip end G ′ of the conductive terminal 1 ″ pierces the covered electric wire 1 ″, and before piercing. (B) is a cross-sectional view seen from the side with the connection completed.

FIG. 7A is a perspective view of a conventional example of a method in which a tip portion 1 ′ ″ of a conductive terminal is bent in a zigzag manner, and the conductive terminal 1 ′ ″ holds a covered electric wire 9 ′. .. (B) is a cross-sectional view seen from the side with the connection completed.

[Explanation of reference numerals] 1 , 1 ', 1 ", 1 '" Conductive terminals 2, 2 ', 3, 3' Tip portions 4, 4 ', 5, 5' Contact slope portions 6, 6 'Parallel groove portions 7 , 7 'conductors 8, 8' sheath (coating) 9, 9 'covering the electric wire 10 meandering arrangement part A' modular plugs B 'housing C' upper D 'covered wire insertion hole E' conductive terminal receiving hole G ', H' conductive Tip of terminal

Claims (1)

[Claims for utility model registration] [Claim 1] In the housing of the electrical connector,
In a conductive terminal in which a conductive terminal made of a conductive plate material is press-fitted into a covered electric wire inserted into the housing and electrically connected, two symmetrical left and right end portions 2 having a flat portion at the lower end of the conductive terminal 1 are provided. 3 and the conductive terminal 1
Contact sloping surface portions 4 and 5 are formed symmetrically from the side, and parallel groove portions 6 are provided between the contact sloping surface portions 4 and 5, and the side surfaces are formed in a flat shape. Conductive terminal to do.