JP2002222681A - Two-stage press-fitting connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a two-step press-fitting connector of low cost and superior user workability, which can not only prevent buckling troubles of a terminal, if it has a header connector to be mounted on a board mainly for a switchboard, a transmission equipment or the like is fitted in a shroud. SOLUTION: The connector is structured, first with a base body 10 of a metal terminal 8 and its tapered tip part 9, and secondly, with a shroud 2 equipped with insertion holes 4, consisting of broad guide holes 5 of a tapered shape and metal terminal holding parts 6 of size smaller than those of the base bodies 10 arrayed in parallel. Thirdly, after the metal terminals 8, protruding toward a board side of the header connectors 7, are inserted stably to a fixed depth into the insertion holes 4 consisting of the broad guide holes 5 of a tapered shape and the metal terminal holding parts 6 smaller in size than the base bodies 10, and they are press fitted with a press-fitting head jig, so that the base bodies 10 of the metal terminals are held by and fitted with the metal terminal holding parts 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a header connector mainly mounted on a board of an exchange or a transmission device, which is fitted to a shroud (an insulator such as a wall provided for protecting and guiding a contact). The present invention relates to a two-stage press-fit connector which not only prevents terminal buckling accidents but also is inexpensive, has good workability for users, has a stable holding force, and has excellent long-term reliability.

[0002]

2. Description of the Related Art As shown in FIG. 2, a conventional connector 1 'mainly has a two-piece system, a straight terminal system, a taper terminal system, or the like.

[0003]

The problem to be solved for each of these methods is that the first two-piece method has a high component cost. There was a problem that the work was troublesome twice. Further, in the second straight terminal method, the terminal is not sufficiently looked into at the time of temporary insertion, so that the position of the press-fit head is hard to come out, and the terminal buckles. In addition, there is a problem that the shroud tends to come off. The last taper terminal method has a disadvantage that the position of the shroud is not stable because the shroud is gradually tightened when the shroud is temporarily inserted, and the shroud interferes with the press-fitting head jig to easily break the connector.

[0004]

According to the present invention, as a result of diligent studies to solve these problems, firstly, the metal terminal 8 protruding toward the substrate side of the header connector 7 is formed by the base portion of the metal terminal. Secondly, the shroud 2 which is the mating partner is provided with a tapered wide guide hole 5 and a metal terminal base 10 smaller than and parallel to the shroud 2. Thirdly, the metal terminal 8 protruding toward the substrate side of the header connector 7 including the base portion 10 of the metal terminal and the tip portion 9 made thinner than the metal terminal holding portion 6 is provided. The insertion is made to a certain depth in an insertion hole 8 formed of a tapered wide guide hole 5 formed in the shroud 2 and a metal terminal holding portion 6 which is smaller than the dimensions of the base portion 10 of the metal terminal and is formed in parallel. After that, insert the press-fit head jig 12 The two-stage press-fit type connector in which the base portion 10 of the metal terminal is held by the metal terminal holding portion 6 to be fitted by being inserted.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a two-stage press-fit type connector 1 according to the present invention will be described below in detail with reference to the accompanying drawings.

[0006]

FIG. 1A is a cross-sectional view of a two-stage press-fit connector 1 of the present invention as viewed from the side. A metal terminal 8 comprising a base portion 10 of a metal terminal and a tip portion 9 which is thinner than the base portion 10 is formed by a shroud. 2 is an explanatory view showing a stepwise state until the press-fitting is completed by being press-fitted into the insertion hole 4 formed by the tapered wide guide hole 5 and the metal terminal holding portion 6 provided in FIG. FIG. 2 is an exploded perspective view of the two-stage press-fit connector 1 of FIG. As is clear from the figure, first, the metal terminal 8 protruding toward the substrate side of the header connector 7 has a structure including a base portion 10 of the metal terminal and a tip portion 9 which is thinner than the base portion. Next, a structure in which a shroud 2 which is a mating partner is provided with an insertion hole 8 formed of a tapered wide guide hole 5 and a metal terminal holding portion 6 which is smaller than the dimensions of the base portion 10 of the metal terminal and is provided in parallel. It is. Finally, the metal terminal 8 protruding toward the substrate side of the header connector 7 comprising the base part 10 of the metal terminal and the tip part 9 made thinner than the base part 10 is formed into a tapered wide guide hole 5 formed in the shroud 2.
After inserting the metal terminal into the insertion hole 8 having a size smaller than that of the base portion 10 of the metal terminal and being parallel to the metal terminal holding portion 6 and stabilizing the insertion hole 8, the press-fit head jig 12 is inserted. This is a two-stage press-fit type connector in which the base portion 10 of the metal terminal is held by the metal terminal holding portion 6 and fitted by press-fitting.
A typical PBT (polybutylene terephthalate) resin or LCP (liquid crystal polymer) resin was used as an insulator of the shroud 2, and a typical copper alloy (treatment: partial gold plating) was used as a metal terminal. Next, as the first stage of the press-fitting state of the present invention, the shroud 2 is manually inserted into the header connector 7 inserted into the board 11 from above. In the second stage, the press-fitting head jig 12 is inserted with the shroud 2 inserted to a certain depth and stabilized.
And press-fit. As the third stage, the press-fitting is completed. In this case, since the press-fitting uses only the non-contact surface of the terminal, the contact surface is not damaged. Further, since the base portion 10 of the metal terminal is slightly larger in size than the metal terminal holding portion 6, it is held by the metal terminal holding portion 6, and a stable holding force can be obtained. Fig. 1 (c)
FIG. 2 is a cross-sectional view from the side when the two-stage press-fit connector 1 of the present invention is fitted to the receptacle connector 15, and is an explanatory view showing an actual mounting state. As is clear from the figure, two receptacle connectors 15 are mounted on the two-stage press-fit connector 1 of the present invention.

[0007] Because of the above structure, the second aspect of the present invention.
A reliability test (thermal shock test, temperature and humidity cycle test, high-temperature creep, terminal holding force) was performed on the step-fit connector 1 and the conventional product.
The results were as good or better.

In the embodiment of the present invention, the two-stage press-fit type connector 1 in which the header connector and the shroud are fitted has been described as a representative example. However, the present invention is not necessarily limited to this number, and other variations may be used. It goes without saying that the design is within the scope of the present invention.

[0009]

As described above, according to the two-stage press-fit type connector 1 of the present invention, 1. It is possible to prevent the terminal from buckling. 2. It can be manufactured at low cost. 3. User workability is good. 4. It has a long-term reliability because it has stable holding power. Its industrial value is great.

[Brief description of the drawings]

FIG. 1A is a cross-sectional view of a two-stage press-fit connector 1 of the present invention as viewed from the side, in which a metal terminal 8 including a base portion 10 of a metal terminal and a thinner tip portion 9 is applied to a shroud 2. FIG. FIG. 7 is an explanatory view showing a stepwise state until the press-fitting is completed by being press-fitted into an insertion hole 4 formed by a tapered wide guide hole 5 and a metal terminal holding portion 6. (B) It is an exploded perspective view of the two-stage press-fit type connector 1 of the present invention. (C) A cross-sectional view from the side when the two-stage press-fit connector 1 of the present invention is fitted to the receptacle connector 15, and is an explanatory diagram showing an actual mounting state.

FIG. 2 is a cross-sectional view of a conventional connector 1 'as viewed from the side, and is an explanatory view of a problem of the conventional method.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Two-stage press-fit type connector of this invention 2 Shroud (Insulator, such as a wall provided for protecting and guiding a contact) 3 Insertion hole 4 Insulator 5 Wide guide hole 6 Metal terminal holding part 7 Header connector 8 Metal Terminal 9 Metal terminal tip 10 Metal terminal base 11 Board 12 Press-fit head jig 13 Contact surface 14 Non-contact surface 15 Receptacle connector 1 'Conventional connector 2' Shroud 7 'Header connector 8' Metal terminal 11 'Board 12 ′ Press-fit head jig 16 ′ Press-fit plate

Continuation of the front page (72) Inventor Takuro Horinaka 2-12-8 Shimoodanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture Inside the Oki Electric Cable Co., Ltd. (72) Inventor Masami Harada 2- 12-8 Shimoodanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture No. Oki Electric Cable Co., Ltd. F term (reference) 5E023 AA04 AA08 AA18 BB02 BB12 CC22 DD08 DD17 EE02 EE27 GG04 GG08 HH16 HH19 HH22

Claims (3)

[Claims] 1. A board 11 is inserted into a header connector 7 in which a plurality of metal terminals 8 are protruded in parallel on both sides of an insulator 4 and held and integrated, and the metal terminals 8 protruding toward the board are
In the connector which is press-fitted into a plurality of insertion holes 4 formed in the shroud 2, the metal terminal 7 protruding toward the board side of the header connector 7 is formed from a base portion 10 of the metal terminal and a tip portion 9 which is thinner than the base portion 10. A two-stage press-fit connector. 2. A board 11 is inserted into a header connector 7 in which a plurality of metal terminals 8 are protruded in parallel on both sides of an insulator 4 and held and integrated, and the metal terminals 8 protruding toward the board are
In the connector which is press-fitted into a plurality of insertion holes 4 formed in the shroud 2 and is fitted in the shroud 2 in parallel with a tapered wide guide hole 5 and a base smaller than the dimensions of the base 10 of the metal terminal. A two-stage press-fit type connector in which an insertion hole (8) comprising a holding portion (6) is provided. 3. A board 11 is inserted into a header connector 7 in which a plurality of metal terminals 8 are projected in parallel on both sides of an insulator 4 and held and integrated, and the metal terminals 8 projected on the board side are
In the connector that is press-fitted into the plurality of insertion holes 4 formed in the shroud 2 and is fitted, the metal terminal 8 protruding toward the substrate side of the header connector 7 including the base part 10 of the metal terminal and the tip part 9 made thinner than the base part 10 is formed. The insertion is made to a certain depth in an insertion hole 8 formed of a tapered wide guide hole 5 formed in the shroud 2 and a metal terminal holding portion 6 which is smaller than the dimensions of the base portion 10 of the metal terminal and is formed in parallel. A two-stage press-fitting connector characterized in that the base part 10 of the metal terminal is held and fitted by the metal terminal holding part 6 by inserting and press-fitting the press-fit head jig 12.