JPS63232280A - Connector and construction of its contact pin - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Summary of the Invention The present invention is an indirect connector in which the taper shape formed at the tip of the contact pin is asymmetrically formed in order to stabilize the connection between the contact pins 1 and the female connector. By chamfering the side that contacts the contact spring on the female connector with a steep taper, and chamfering the opposite side with a gentle taper, the displacement of the contact spring can be greatly reduced. It is characterized by being able to be removed.

INDUSTRIAL APPLICATION FIELD The present invention relates to an indirect type connector and its contact pin structure.

BACKGROUND OF THE INVENTION With the development of communication equipment and electronic equipment, the electronic components used therein have been forced to become smaller and more dense.

The indirect type connectors that connect these electronic components are also required to be miniaturized, just like the electronic components, but it is necessary to obtain sufficient contact force between the contact pin and the contact spring provided on the female connector. In order to do this, it is necessary to increase the displacement of the contact spring. For this reason, there is a need for a contact pin structure that allows for a large displacement of the contact spring.

Conventional technology Figures 6 and 7 show cross-sectional views of conventional indirect connectors, with Figure 6 showing the state before the contact pins are fitted into the female connector, and Figure 7 showing the state when the contact pins are fitted into the female connector. The status of each is shown. The contact pin 1 has a square prism shape, and its tip 2 is tapered to form a regular square pyramid. The contact pin 1 is made of phosphor bronze, for example, and is plated with gold 3 or the like on all four sides, or at least on the upper and lower two sides in the drawing, over a certain range from its tip. Reference numeral 4 denotes a female connector into which the contact pin 1 is fitted, and its housing 5 has a central wall 6, on which a pair of contact springs 7 made of, for example, phosphor bronze are opposed. It is installed as follows. Further, the housing 5 is formed with an opening 8 for receiving the contact pin 1.

Problems to be Solved by the Invention FIGS. 8 and 9 are explanatory diagrams showing the positional relationship between the conventional contact spring 7 and the contact pin 1 shown in FIGS. 6 and 7. FIG. 8 shows the state before fitting, and FIG. 9 shows the state when fitting.

The contact spring 7 is bent toward the center wall 6 at the contact point 7a to form a tongue 7b.

As shown in FIG. 8, in order to insert the contact pin 1 into the female connector 4 through the opening 8 and make contact with the contact portion 7a of the contact 1-spring 7, the tapered tip of the contact pin 1 must be The lower tip edge 2a of the portion 2 must be located above the tip edge 7C of the tongue piece 7b of the contact spring 7 in the drawing. In order to achieve such a positional relationship, it is necessary to make the tongue piece 7b of the contact spring 7 longer than the lower tip edge 2a of the contact pin 1.

However, since the tongue piece 7b is formed long in this way, the ninth
As shown in the connector ltN mating state diagram in the figure, the displacement of the contact spring 7 is determined by the position of the tongue piece 7b to prevent the tip of the tongue piece 7b from hitting the central wall portion 6 of the housing 5. Therefore, in order to obtain a predetermined contact force, it is necessary to obtain a large force with a small displacement of the contact spring.
It is necessary to design the contact spring 7 to have a large stiffness.

For this reason, there is a problem in that a slight variation in the thickness of the contact pin causes a large variation in the contact force, making it difficult to miniaturize the contact spring and make it difficult to miniaturize the connector.

The present invention has been made in view of these points, and its purpose is to provide a connector that has a highly reliable contact function and can be miniaturized, and its contact l-bin structure. That's true.

Means for Solving the Problems FIG. 1 shows the shape of the contact pin of the present invention, and FIGS. 2 and 3 are explanatory diagrams for explaining the present invention in detail.

FIG. 1(A) shows a top view of the contact pin 11, and FIG. 1(8) shows a front view. The tip end 12 of the contact pin 11 is chamfered so that the side 12a that contacts the contact spring during fitting is largely chamfered with a steep taper, and the opposite side 12b is chamfered small with a gentle taper. The other two surfaces 12C orthogonal to these two surfaces are chamfered with tapers of the same size.

As shown in FIG. 2, the contact spring 17 of the female connector is separated from the part 17a that contacts the wall part 16 parallel to the mating direction of the contact pin 11, and gradually separates from this wall part 16 at a gentle angle. an intermediate portion 17b, and a tip portion 17 bent from the intermediate portion 17b toward the wall portion 16;
C, and as shown in Fig. 2, the contact pin 1
1 into the female connector 14, the tip edge 17d of the tip portion 17c of the contact spring 17 is connected to the tip edge 1 of the largely chamfered tapered surface 12a of the contact pin 11.
2 (arranged so as to be closer to the wall portion 16 than j).

Operation By forming the shape of the tip 12 of the contact pin 11 in this way, the lower tip edge 12d of the tip 12 of the contact pin 11 has a shape that is smaller than that of the conventional example shown in FIG.
It is located above the center wall 16 of the female connector 14. Therefore, the tip of the contact spring 17°
Even if the (tongue) 17C is formed short, its tip edge 17d will be located below the lower tip edge 12d of the contact pin 11.

With this structure, as shown in FIG.
Since the amount of displacement of contact spring 7 can be increased, a contact spring 17 with small stiffness can be used. Further, since the length of the tip portion 17c of the contact spring 17 can be shortened, the contact spring can be made smaller, and as a result, the connector can be made smaller.

Embodiments The present invention will be described in detail below with reference to embodiments shown in FIGS. 4 and 5, and explanatory diagrams in FIGS. 2 and 3.

The contact pin 11 has a rectangular prism shape made of phosphor bronze, for example, and its tip 12 is chamfered with a steep taper on the side 12a that contacts the contact spring 17, and on the opposite side 12b. It has a small chamfer with a gentle taper angle. Further, as shown in FIG. 1(A), two surfaces 12c perpendicular to these surfaces are chamfered with tapers having the same angle.

Reference numeral 14 indicates a female connector into which the contact pins 11 are fitted, and the housing 15 thereof has a central wall portion 16. A pair of contact springs 17 made of, for example, phosphor bronze are provided in the housing 15 so as to face each other.
7a, an intermediate portion 17b that gradually separates from the central wall portion 16 at a gentle angle, and a tip portion (tongue) 17C that is bent from the intermediate portion 17b toward the central wall portion 16. A contact portion 17e with the contact pin 11 is formed between the intermediate portion 17b and the tip portion 17C. Further, the housing 15 is formed with an opening 18 into which the contact pin 11 is inserted.

As shown in the detailed view of FIG.
Gold plating 13 is formed on the lower end surface of the contact spring 1 at a predetermined length from the tip of the contact spring 1 when the contact pin is fitted.
The tip edge 17d of the tip portion 17C of the contact pin 11 is closer to the center wall 1 than the lower tip edge 12d of the tip portion 12 of the contact pin 11.
6 side, that is, the lower side in FIG.

However, when the contact pin 11 is inserted into the opening 18 of the housing 15 and a mating operation is performed, the large chamfered lower tapered surface 12 of the contact pin 11 in FIG.
While pushing the tip portion 17C of the contact spring 17 downward, the contact pin 11 is fitted into the female connector 14 as shown in FIGS. 3 and 5. Since the tapered surface 12a of the contact pin 11 on the side that contacts the contact spring 17 is greatly chamfered in this way,
The lower end edge 12d can be positioned relatively far from the center wall 16.

As a result, even if the tip portion 17c of the contact spring 17 is formed short, the tip edge 17d of the contact 1 to the spring 17 can be shortened.
Since the contact pin 11 can be positioned closer to the center wall 16 than the edge 12d of the lower spring 711, it is not shown in FIG. It can be made very large. As a result, the stiffness of the contact spring 17 can be reduced, and a design margin is created, allowing the connector 1 to the spring to be made smaller, and thus the entire connector to be made smaller.

Effects of the Invention Since the connector of the present invention is configured as detailed above,
Since the displacement position of the contact spring can be increased, the stiffness of the contact spring can be reduced, and there is a margin for installation, which allows the contact spring to be made smaller, and the entire connector to be made smaller. It has the effect of not only being able to be measured, but also providing a highly reliable contact function.

[Brief explanation of drawings]

FIG. 1 shows the shape of the contact pin of the present invention 73.
(A) shows a top view, and (B) shows a front view. Figure 2 is an enlarged sectional view showing the positional relationship between the contact pin and the female connector when the contact pin is mated, and Figure 3 does not show the positional relationship between the contact pin and the female connector when the contact pin is fully mated. 4 is a cross-sectional view of the embodiment of the present invention before mating, FIG. 5 is a cross-sectional view of the embodiment of the present invention in a mated state, and FIG. 6 is a cross-sectional view of the conventional example before mating. FIG. 7 is a sectional view of the conventional example in a fitted state, FIG. 8 is an explanatory view of the conventional example before fitting, and FIG. 9 is an explanatory view of the conventional example when fitted. 11... Contact pin, 12... Tip, 12a... Sharply angled tapered surface, 12b... Slowly angled tapered surface, 12d... Lower tip edge, 14... Female side connector , 15...Housing, 16...Central wall part, 1
7... Contact spring, 17c... Tip part (tongue piece), 17d... Tip edge, 18... Frontage part.・, -2, -Neyuno-ko=- (A) (B) +2: Tip part 13:
Shokume y Rokuo → Sekimei 0 contact pin 1,011 feet section 1st figure 16: Dana Togo 17; contact 1; Fig. 3: Contact pin 14: Female shellfish 16: Medium fire wall 17: No contact 4) 1: Contact pin 14: Mesui law Kokikuta 17; Fig. 5 1: Handling bin 4: Mesui Required Purification 5: Housing 7: Non-contact regulations before the Cabinet Order Figure 7: Contact pin 4: Female IJ: l Purification geta 6: City fire! Post 7: Funtact Itwa moromi〉ζItmaeσ2Ibun 1AMoita υ8 Figure 8 Figure 1: Contact pin 6: Part 7: Contact 1.1 Explanatory diagram of the 4 rows of holes during metal drilling Figure 9

Claims (2)

[Claims] (1) Contact spring (17) inside the housing (15)
A contact formed into a square pyramid shape by chamfering a square prism-shaped tip (12) that is fitted into a female connector (14) equipped with a connector and achieves electrical connection through contact with the contact spring (17). In the pin (11), the tip (12) is chamfered so that the side (12a) that contacts the contact spring (11) is largely chamfered with a steep taper, and the opposite side (12b) is chamfered with a gentle taper. Contact pin structure characterized by small chamfers. (2) Contact spring (17) inside the housing (15)
A female connector (14) is fitted with a rectangular prism-shaped tip (12) that is fitted into the female connector (14) and achieves electrical connection through contact with the contact spring (17). In this connector, the tip end (12) of the contact pin (11) is chamfered on the side (12a) that contacts the contact spring (17).
) is greatly chamfered with a steep taper, and the opposite side (12b
) is slightly chamfered with a gentle taper angle, and the contact spring (17) of the female side connector (14) is connected to the part (17a) that contacts the wall part (16) parallel to the fitting direction of the contact pin (11). , an intermediate portion (17b) gradually separating from the wall portion (16) at a gentle angle;
7b) and a tip portion (17c) bent toward the wall portion (16), and the contact pin (11) is connected to the female connector (1).
4), when the tip edge (17d) of the tip portion (17c) of the contact spring (17) is fitted into the large chamfered taper surface (12a) of the contact pin (11).
) is arranged so as to be closer to the wall (16) than the tip edge (12d) of the connector.