JPH0462771A - Contact pin for socket and manufacture thereof - Google Patents

Abstract

PURPOSE:To simplify the assembly process of socket with an efficient use of material by juxtaposing pressure contacted pieces of contact pins in a close manner, thereby preventing intrusion of flux at the time of solder dipping. CONSTITUTION:A plug 12 is fitted into a socket 11 so that contact pins 13, 13... of the socket 11 are connected to contact pins 14, 14.... The contact pins 13, 13... are formed through a press punching-out work to a metal plate. On the upper part of the pins 13, 13... a pressure contact pieces 15, 15a, 15, 15a... are juxtaposed so that the bases 16, 16a, 16, 16a... of the pieces 15, 15a, 15, 15a... are connected thereto. The pressure contact pieces 15, 15a, 15, 15a... are juxtaposed adjacently and the lower parts of the pins 13, 13... are arranged in series at a bar. With the arrangement, since the distance between the pieces 15, 15a is made small, the pitch between the pins 13, 13 is made small so that many pins 13 can be provided in series with the unit length of the bar.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a contact pin for a socket and a method for manufacturing the same, and particularly to a contact pin for a socket that simplifies the assembly process of the socket and a method for manufacturing the same. It is.

[Prior art] Conventionally, contact pins for this type of socket are shown in Fig. 7 to Fig. 1.
This will be explained according to Figure 0. In the figure, (1) is a contact pin, and as shown in FIG.
1) is formed by cutting a metal plate into a mold by press punching. A number of contact pins (1) are connected to the bar (2). Moreover, pressure contact pieces (3) (3a) are arranged in parallel on the upper part of the contact pin (1), and the pressure contact pieces (3) (
3a) are connected together by a connecting part (4). Then, the inside of the pressure contact piece (3M3a), that is, the pressure contact piece (3)
The base of (3a) is bent at the position shown by the two-dot chain line in FIG. 7, and the pressure contact piece (3) (
The base of 3a) is formed into a U-shape via a connecting portion (4), and a blank space is provided.

Further, the upper portions of the bases of the pressure contact pieces (3) (3a) are bent inward and provided obliquely, thereby applying a pressure contact force to the pressure contact pieces (3) (3a). The pressure contact pieces (3) (3a) are configured to sandwich and connect a contact pin of a plug (not shown).

Further, a lead portion (5) is formed at the bottom of the contact pin (1), and the lead portion (5) is provided to protrude from the nozzing (not shown) of the socket, and is attached to a circuit board, etc. It is set up so that you can do it.

[Problems to be Solved by the Invention] Since the lead portion of the conventional socket contact pin described above is formed in a flat plate shape, the clearance of the hole in the housing through which the lead portion is inserted is large, and the lead portion is When connecting with a solder dip to a board etc., the solder flanks rise into the socket and deteriorate the quality. In addition, since the press contact pieces of the contact pins have a blank space at the connection part, the pitch ((A) in Fig. 8) of the contact pins connected to the bar is large. Therefore, high-density mounting is possible. For example, press-fit every other contact pin connected to the bar into the fixing hole of the socket housing formed accordingly, and again press-fit the contact pin of another bar into the fixing hole between the press-fitted contact pins. Press-fitting increases assembly man-hours and reduces productivity.Furthermore, the unnecessary area of the metal plate to be pressed increases, increasing material costs.

Therefore, a technical problem arises that needs to be solved in order to prevent blanks from entering during soldering, as well as to use materials efficiently and simplify the socket assembly process. The purpose is to solve problems.

[Means for Solving the Problems] The present invention has been proposed to achieve the above object, and provides a socket for a socket in which pressure-welding pieces for sandwiching the contact pins of a plug are provided on the upper part of the contact pins. A contact pin for a socket, characterized in that the base of each pressure contact piece is brought into close contact with each other, and the base of the pressure contact piece is bent above so that the pressure contact piece can hold the contact pin of the plug. and manufacture of a socket bin in which a metal plate is punched out using a press or the like, the pressure welding pieces are arranged side by side on the top of a contact pin, and one pressure welding piece is bent to one side of the other pressure welding piece so that the respective pressure welding pieces face each other. It is an object of the present invention to provide a method for manufacturing a contact pin for a socket, characterized in that pressure contact pieces of the contact pin are arranged closely in parallel.

[Function] In the invention described in claim (1), since the base of the pressure contact piece of the contact pin for a socket is formed in close contact with each other, if the base is press-fitted into the hole through which the lead part of the socket housing is inserted, the chain can be removed. By making the hole clearance small, it is possible to prevent flux from entering during solder dipping.

In the invention described in claim (2), unlike the conventional type, a blank is not provided, but the pressure contact pieces of the contact pin for the socket are arranged adjacently in parallel by press punching.

Therefore, since the contact pins can be successively arranged on the bar with a small pitch, they can be press-fitted into the fixing holes for each contact pin in the high-density socket housing at the same time, and the waste of material can be reduced. be able to.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 6 of the attached drawings.

In the figure, (10) is a connector, and as shown in Figs.・
・And plug (l■ contact pin (kl) (14)・
It is configured so that it can be connected to... The socket (
11) Contact pins (1st class (1st class...) are molded by press punching a metal plate as shown in Figure 3. are pressure welding pieces (159 (15a), (IE9 (15a)...
・ are arranged in parallel, pressure contact pieces (1'1l (15a), (15
) (15a) - Base of... (+6) (16a), (
1*(16a)... are connected. The contact pin (1■(!罎...) pressure contact piece (1 (15a), (
I'J (15a)... are arranged closely in parallel, and
The lower part of the contact pin θi (1') is connected to a bar (rumor has it). Therefore, since the interval between the pressure contact pieces (15a) is made small, the pitch near the contact pin θ is made small, More bars (r7) can be connected in series per unit length.

As shown in FIGS. 3 and 4, the connecting portion between the pressure welding pieces (one (15a)) (the time is the center line (2 in FIG. 3)
The base (10(
16a) in close contact. Furthermore, as shown in FIGS. 5 and 6, the pressure contact pieces θ (+52) are connected to the base (16) (16a).
The upper part of the pressure welding piece (1 (1)
The tips of 5a) are bent so as to closely face each other, and apply a strong pressure to the pressure contact piece 0→(+53). In addition, the middle part of the contact pin (1), that is, the base (163 (
16a) is bent slightly inward, and the lead portion (+9) of the contact pin (I) is connected to the pressure contact piece θ5i1 (15a
) is formed so that it is located in the center between Then, the bent connecting part (the part protrudes slightly to the side) is made small, and the contact pin (I■θ■...) connected to the bar (the pitch ω) is made small. The adjacent fixing holes 12+) (2) of the socket housing (A) shown in Figures 1 and 2
1) Matches the pitch (a) of...

On the other hand, the socket housing Q@ is the lower base (2)
and the upper mold (c) can be freely fitted.

Also, the insertion holes (B) (B)... of the base (2) are communicated with the insertion holes (C) (C)... of the mold (C), so that the fixing holes Q+) (2+)...・Form. The base (2
In the insertion hole (B) of ), the upper part of )... and the lower part of the insertion hole (C) of mold (C) (C) -...
)...-(2'i5 gradient...) is formed.

Therefore, as shown in FIGS. 1, 2, and 5,
Insert a bar (ω) into the insertion hole (c) (c) of the mold (to)
Press-fit the contact pin 0■ (one...) connected in series to (4) matches, so the negative side of the mold (for example, the second
All insertion holes (C) (C) (right or left side in the figure)
The contact pin θA (1→...) can be inserted simultaneously into the bar (r't) and then the base (2) is fitted.At this time, the contact pin (!Connection part of erection...(g)(g)...
(on the base) and on the notch groove of the mold (c)) (c)
..., 12iH-..., and the contact pin 0
Prevent the looseness of the contact pin (1■...). Also, the base of the contact pin (40 books...) (1→(16a)).

(16) (16a)... is press-fitted into the upper part of the insertion hole (B) (C) -- of the base (2), and into the insertion hole)
(b) While absorbing the clearance of..., the lead part (I (c)... is vertically installed from the insertion hole...).Then, the plug (force) is inserted into the socket (11). Once installed, the fixing holes (21) (21
) - ... to the contact pin (Y) of the plug (2).
... is inserted, and the plug (0 contact pin (b)
(b) Connect the lower end of the socket (++) to the contact pin 0 (1) -... pressure contact piece θ → (15a), (g)
(15a)... is held in between.

Note that this invention can be modified in various ways without departing from the spirit of the invention, and it goes without saying that this invention extends to such modifications.

[Effects of the Invention] As detailed in the above embodiment, the base of the socket contact pin is brought into close contact with the present invention, so the base can be press-fitted into the hole through which the lead part of the socket housing is inserted to reduce the clearance. It can be done. Therefore, it is possible to prevent flux from entering when applying a solder dip to the lead portion.

Further, during the press punching process for forming the contact pins, the pressure contact pieces of the contact pins for the socket are arranged closely in parallel, so that the contact pins can be successively arranged on the bar with a small pitch. Therefore, it is possible to match the pitch of the fixing holes of the socket housing, which is formed in response to high-density packaging, and to press fit into each fixing hole at the same time without having to press fit into every other hole as in the conventional case. Furthermore, since the contact pins of the socket are formed with a small pitch, waste of metal plate material can be reduced, contributing to cost reduction.

[Brief explanation of drawings]

Figures 1 to 6 show an embodiment of the present invention, Figures 1 and 2 are cross-sectional views of the main parts of the connector, and Figure 3 is a molded socket contact connected to a bar. A partially cutaway front view of the pin, FIG. 4 is a sectional view of the bent base of the pressure welding piece, and FIG. 5 is a partially cutaway showing the contact pin in FIG. 3 after being bent and bent in a prescribed manner. A front view, FIG. 6 is a side view, FIGS. 7 to 10 show a conventional example, and FIG. 7 is a front view showing a state in which a metal plate is press punched and contact pins are connected to a bar. , FIG. 8 is a front view showing the contact pin shown in FIG. 7 after being bent in a predetermined manner;
FIG. 9 is a side view of the same, and FIG. 10 is a cross-sectional view taken along the line AA in FIG. 9. (I l)...Socket (Y...Plug θ■ (Y...Contact pin θ (15a)) -...Pressure piece (lt9 (16a) ・...- Base patent applicant Mitsumi Electric Co., Ltd. Figure Figure Figure (If9 (16a) - Base Figure Figure 8 Figure Figure Figure 9

Claims (2)

[Claims] (1) In a contact pin for a socket, in which pressure-welding pieces that sandwich the contact pins of the plug are provided on the top of the contact pin, the bases of the pressure-welding pieces are brought into close contact with each other, and the upper part of the base of the pressure-welding pieces is bent. A contact pin for a socket, characterized in that the pressure contact piece is configured to clamp a contact pin of the plug. (2) A contact pin for a socket in which a metal plate is punched out using a press or the like, the pressure welding pieces are arranged side by side on the top of the contact pin, one pressure welding piece is bent to one side of the other pressure contacting piece, and each pressure welding piece faces each other. Claim (1), characterized in that, in the manufacturing method, the pressure contact pieces of the contact pin are arranged adjacently in parallel.
A method of manufacturing the described contact pin for a socket.