JPH08306411A - Electric connector - Google Patents

Abstract

PURPOSE: To provide an electric connector by which a pitch of lead parts can be comparatively easily set in an allowable range even if a bending condition or the like at contact pin manufacturing time is not strictly controlled and malfunctions such as soldering failure and contact of mutual contact pins are hardly caused. CONSTITUTION: Contact pins 15 and 16 are arranged at a prescribed pitch in parallel to each other on a main body mold 12, and these contact pins 15 and 16 have lead parts 15d and 16d to be soldered by being brought into contact with contact parts 15a and 16a, L-shaped intermediate parts 15b and 16b and a surface of a wiring base board 20 in order from the tip side, and round parts 15c and 16c bent in a circular arc shape so as to draw an L letter are arranged between the intermediate parts 15b and 16b and the lead parts 15d and 16d. A plate-like spacer part 13 to be inserted between the mutual contact pins 15 and 16 so as to contact with only tail end parts of the intermediate parts 15b and 16b and upper parts of the round parts 15c and 16c of the adjacent contact pins 15 and 16, is protrusively arranged in a rear part of the main body mold 12 so as to turn sideways.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a large number of contact pins densely arranged at a relatively small pitch.
The present invention relates to an electric connector suitable for C cards and the like.

[0002]

2. Description of the Related Art FIG. 8 shows an example of an IC card connector which is an electrical connector of this type. This connector 50
In the main body mold 52 having a substantially U shape in a plan view, contact pins 55 and 56 of required books (for example, a total of 68 pieces of upper and lower 34 pieces in total) are arranged in parallel at a predetermined pitch. There is.

The contact pins 55, 56 are located on the front side of the main body mold 52 in this order from the front end side, and contact portions 55a, 56a for contacting a connector (connector portion of an IC card) of a connection partner, the main body. L-shaped intermediate portions 55b and 56b fixed to the mold 52, and lead portions 55d located on the rear side of the main body mold 52 and abutted against the surface of the wiring board 60 and soldered.
There are 56d, and rounded portions 55c, 56c are provided between the intermediate portions 55b, 56b and the lead portions 55d, 56d, which are bent in an arc shape so as to draw an L shape.

[0004]

In the connector 50 having the above structure, the contact pins 55 and 56 are
For example, 34 sheets are simultaneously formed into a chain shape by pressing the sheet metal, and the sheet metal is press-fitted and inserted into the main body mold 52, and then the chain-shaped end portion is cut off.

In this case, as shown in FIG. 9 when the contact pins are arranged from the rear side, the prescribed pitch v of the lead portions 55d and 56d of the upper and lower contact pins 55 and 56 is, for example, 0.635 mm plus or minus. 0.1 mm
However, since the habit and the like remain in the press working, the bending condition of the contact pins 55 and 56 is slightly deviated, and the lead portions 55d of the contact pins 55 and 56,
The pitches v and u between the 56d are different from each other and fall outside the allowable range, resulting in poor soldering and contact pins 55,
There were often problems such as contact between 56.

In view of such a point, the present invention makes it possible to relatively easily keep the pitch of the lead portion within an allowable range without strict control of the bending degree at the time of manufacturing the contact pin, resulting in poor soldering and It is an object of the present invention to provide an electric connector in which troubles such as contact between contact pins are less likely to occur.

[0007]

In order to achieve the above object, the electrical connector according to the present invention has a main body mold in which required contact pins are arranged in parallel at a predetermined pitch, and the contact pins are , Sequentially from the tip side, a contact portion located on the front side of the main body mold and brought into contact with a connector of a connection partner, an intermediate portion fixed to the main body mold, and a wiring board located on the rear side of the main body mold. It has a lead part that is abutted and soldered,
In addition, an R-shaped portion that is bent in an arc shape so as to draw an L shape is provided between the intermediate portion and the lead portion, and the rear portion of the main body mold and the intermediate portion of the adjacent contact pins and the It is characterized in that a spacer portion inserted between the contact pins is provided so as to protrude so as to contact only an upper portion of the rounded portion.

[0008]

In the electric connector according to the present invention having the above-described structure, when the contact pin is press-fitted into the main body mold, the upper portion of the middle portion and the rounded portion of the contact pin is the main body mold. It is pressed against a spacer portion provided at the rear portion.

That is, when the pitch between the lead portions of the adjacent contact pins deviates from the specified value due to the bending of the contact pin, the upper part of the rounded portion is arranged so as to sandwich it. One of the spacers (the one where the lead is located on the side where the lead is bent) is pressed by the lower end and turned slightly to the left and right, the bend is corrected, and the lead of the adjacent contact pin is parallel. It is modified so that

Further, since the lower end of the spacer portion contacts the upper portion of the rounded portion of the contact pin, there is a gap between the lower surface of the lead portion of the contact pin, that is, the upper surface of the substrate and the lower end of the spacer portion. Since the lead portions are formed and located there, it is possible to prevent the soldering portions from being short-circuited (solder flows between the lead portions of the contact pins) during surface mounting.

By doing so, the pitch of the lead portions can be kept within an allowable range relatively easily without strict control of the degree of bending at the time of manufacturing the contact pin, resulting in poor soldering and Problems such as contact pins contacting each other are less likely to occur.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 5 are a plan view, a front view, a rear view, a bottom view, and an AA enlarged cross-sectional view, respectively, showing an embodiment of an electric connector according to the present invention.

The electrical connector 10 of this embodiment shown in the drawings.
Is divided into upper and lower two stages into the main body mold 12 having a generally U-shaped plan view into which the upper end portion (connector portion) of the IC card is inserted, and a required number of contact pins 15 (for example, a total of 68 upper and lower 34 contact pins). , 16 are arranged in parallel at a predetermined pitch.

The contact pins 15 and 16 are sequentially located on the front side of the body mold 12 from the tip side,
Contact parts 15a and 16a to be brought into contact with the connector (connector part of the IC card) of the connection partner, the main body mold 12
L-shaped intermediate portions 15b and 16b fixed to the main body mold 12 and the lead portion 15 located on the rear side of the main body mold 12 and abutted against the surface of the wiring board 20 and soldered.
d and 16d.

Further, between the intermediate portions 15b and 16b and the lead portions 15d and 16d, there are provided rounded portions 15c and 16c which are bent in an arc shape so as to draw an L shape (see FIG. 7).

Then, at the rear portion of the main body mold 12,
Intermediate portions 15b, 1 of adjacent contact pins 15, 16
A plate-like spacer portion 13 having a rounded surface 13a formed therein is laterally projected so as to be inserted between the contact pins 15 and 16 so as to contact only the end portion of 6b and the upper portions of the rounded portions 15c and 16c. (See FIGS. 6 and 7).

In the connector 10 having such a structure, the contact pins 15 and 16 are formed in a chain shape, for example, by pressing 34 sheet metals at the same time, and the contact pins 15 and 16 are press-fitted into the main body mold 12 from the rear thereof. At the same time, the upper portions of the intermediate portions 15b and 16b and the rounded portions 15c and 16c are press-fitted between the spacer portions 13, and then the chain-like end portions are cut off.

In this case, as shown in FIG. 6 when the contact pins are arranged from the rear side, the prescribed pitch of the lead portions 15d and 16d of the upper and lower contact pins 15 and 16 is p.

In the electrical connector 10 of the present embodiment having the above-described structure, when the contact pins 15 and 16 are press-fitted and inserted into the main body mold 12, as shown in FIG. , 16 intermediate part 15b,
16b and the upper portions of the rounded portions 15c and 16c (X portions in the drawing) are pressed against the spacer portion 13 provided at the rear portion of the main body mold 12.

That is, when the pitch p between the lead portions 15d and 16d of the adjacent contact pins 15 and 16 deviates from the specified value due to bending of the contact pins 15 and 16, the rounded portion 15c, Spacers 1 on both sides arranged so that the upper part X of 16c sandwiches it.
7 is pressed by the lower end of one of the parts 3 and 13 (the one on the side where the lead parts 15d and 16d are bent).
As shown by the alternate long and short dash line in (B), it is slightly rotated to the left and right to correct the bend and the lead portions 15d and 16d of the adjacent contact pins 15 and 16 are corrected to be parallel.

In particular, in the embodiment, since the rounded surface 13a is formed on the spacer portion 13, the spacer 13 is guided by the rounded surface 13a, and the bending is effectively corrected.

Further, since the lower end of the spacer portion 13 is brought into contact with the upper portions X of the rounded portions 15c and 16c of the contact pins 15 and 16, the lower surfaces of the lead portions 15d and 16d of the contact pins 15 and 16, that is, the substrate. A gap α larger than the thickness of the lead portions 15d and 16d is formed between the upper surface (SMT) of 20 and the lower end of the spacer portion 13 so that the lead portions 15d and 16d are located there. It is possible to prevent the soldering portion from being short-circuited (solder flows between the lead portions of the contact pins) during mounting.

By doing so, the pitch of the lead portions 15d, 16d can be relatively easily set within the allowable range without strict control of the degree of bending when manufacturing the contact pins 15, 16. As a result, problems such as poor soldering and contact between contact pins are less likely to occur.

[0024]

As can be understood from the above description, in the electrical connector according to the present invention, when the contact pins are bent or the like, the pitch between the lead portions of the adjacent contact pins deviates from the specified value. The upper part of the rounded part is pressed by one lower end of one of the spacer parts on both sides arranged so as to sandwich it, and it is rotated slightly to the left and right, the bend is corrected, and the lead of the adjacent contact pin is corrected. The spacers are modified so that they are parallel, and the lower end of the spacer portion contacts the upper portion of the rounded portion of the contact pin, so that a gap is formed between the upper surface of the substrate and the lower end of the spacer portion. The lead portion is positioned there, so that it is possible to prevent the soldering portion from being short-circuited during surface mounting.

For this reason, the pitch of the lead portions can be kept within an allowable range relatively easily without strict control of the bending condition at the time of manufacturing the contact pins, resulting in poor soldering or contact between the contact pins. It is possible to obtain an excellent effect that problems such as the above can be hardly caused.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of an electric connector according to the present invention.

FIG. 2 is a front view of the electric connector shown in FIG.

FIG. 3 is a rear view of the electrical connector shown in FIG.

4 is a bottom view of the electrical connector shown in FIG. 1. FIG.

5 is an enlarged cross-sectional view taken along the line AA of FIG.

6 is an enlarged partial rear view of the electrical connector shown in FIG.

FIG. 7 is a diagram which is used for describing a function and effect of the electrical connector of FIG.

FIG. 8 is an enlarged cross-sectional view of a conventional IC card connector.

9 is an enlarged partial rear view of the connector shown in FIG.

[Explanation of symbols]

 10 Electrical Connector 12 Body Mold 13 Spacer Part 13 Rounded Surface 15, 16 Contact Pins 15a, 16a Contact Part 15b, 16b Intermediate Part 15c, 16c Rounded Part 15d, 16d Lead Part 20 Wiring Board p Pitch α Gap

Claims (1)

[Claims] 1. A required number of contact pins are arranged in parallel on a main body mold at a predetermined pitch, and the contact pins are sequentially located from the front end side to the front side of the main body mold and are connected to each other. A contact portion that contacts the connector, an intermediate portion that is fixed to the main body mold, and a lead portion that is located on the rear side of the main body mold and that is abutted against the wiring board and soldered, and the intermediate portion A rounded portion that is bent in an arc shape so as to draw an L shape is provided between the lead portion and the lead portion, and at the rear portion of the main body mold, one of the intermediate portion and the rounded portion of the adjacent contact pins is provided. An electrical connector characterized in that a spacer portion inserted between the contact pins is provided so as to contact only an upper portion of the electrical connector.