JPH1126111A - Female type electric connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To further narrow an arranging interval between pin type contactors by preventing the pin type contactors from being damaged by bending since a mating electronic part collides with tone tips of the pin type contactors when a contactor installing part of the mating electronic part is inserted. SOLUTION: A recessed part 11 into which a contactor installing part of a mating electronic part is inserted, is arranged in a housing 10, and plural grooves 15 are formed at prescribed intervals on an inner wall of this recessed part 11, and pin type contactors 20 are held in these grooves 15. The pin type contactors 20 have guide parts 22 whose tips extend in the opening direction of the recessed part 11 and which incline backward so as to guide the mating electronic part. A guide bar 30 which opens so as to be positioned inside more than the tips 25 of the pin type contactors 20 and has an inserting port 33 forming a tapering guide inclined face 31 whose inner periphery expands toward the mating electronic part side, is put on an opening surface of the recessed part 11 of this housing 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a female electrical connector which can be surface-mounted on a circuit board provided with high-density printed wiring, and more particularly, to a female connector having a structure capable of narrowing the arrangement pitch of contacts in a housing thereof. Electrical connector.

[0002]

2. Description of the Related Art Conventionally, female electrical connectors (socket electrical connectors) have been used to connect electronic components such as male electrical connectors and memory modules. The female electrical connector has a concave portion for receiving the contact mounting portion of the mating electronic component as described above, and inserts the contact into each groove formed at a predetermined pitch on the inner wall of the concave portion,
It is configured to hold. By the way, in recent years, various electronic components have been required to be reduced in size and weight, and various electronic components have been mounted on a board at a high density. It is required to further narrow the array pitch.

FIG. 5 is a view showing an example of a conventional female electrical connector, and FIG. 5A is a partial plan view.
FIG. 5B is a cross-sectional view taken along the line AA ′ in FIG. This conventional female electrical connector includes a housing 10 having a slit-shaped recess 11 into which a contact mounting portion such as a mating electronic component (not shown) such as a male electrical connector is inserted. Grooves 15 are formed at a predetermined pitch on each of the opposing inner walls of the recess 11, and pin-type contacts 20 are inserted and held in these grooves 15.

The upper end of the pin-type contact 20 is
The guide portion 22 extends in the opening direction of the first electronic component 1 and inclines rearward so as to guide a contact mounting portion of a counterpart electronic component (not shown). In addition, adjacent pin-type contacts 20, 20
The partition walls 12 protrude in the opening direction from the tip of the guide portion 22 are provided therebetween. This partition 12
Prevents the pin-type contact 20 from being bent when the counter-part electronic component strikes the tip of the pin-type contact 20 when the contact-mounting portion of the mating electronic component (not shown) is inserted into the recess 11. As a result, the contact mounting portion of the mating electronic component first comes into contact with the guide portion 22 of the pin type contact 20, slides down along the guide portion 22, and is pressed against the contact 21.

[0005]

However, in the above-mentioned conventional female electrical connector, when the distance between adjacent pin-type contacts 20 is to be reduced in order to further reduce the size, for example, the above-mentioned pin-type contact is required. When the distance between the contacts is 0.6 mm, the width of the pin-type contact 20 needs to be about 0.25 to 0.35 mm.
It becomes as thin as 35mm.

As described above, when the partition 12 becomes thin, the recess 1
Injection molding of the tip end of the partition wall 12 protruding in the opening direction becomes difficult, and mechanical strength becomes insufficient. There is a problem that it is easily damaged.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a female electrical connector which can solve the above-mentioned problems caused when the arrangement pitch of the pin-type contacts is further reduced.

[0008]

In order to achieve the above object, the present invention has a concave portion into which a contact mounting portion of a mating electronic component is inserted, and a plurality of grooves are formed on the inner wall of the concave portion at a predetermined pitch. And a plurality of pin-type contacts each having a guide portion which is housed in the groove of the housing, the tip of which extends in the opening direction of the recess, and which is inclined rearward so as to guide the mating electronic component. In the female electrical connector having the pin-type contact, an opening is formed so as to be located inside the distal end of the guide portion of the pin-type contact, and the inner periphery of the insertion hole forms a tapered guide inclined surface that extends toward the counterpart electronic component side. Wherein the guide cover is formed separately from the housing and is fitted over the opening surface of the recess of the housing.

In a preferred aspect of the present invention, the pin-type contactor has a back surface opposite to the contact point and has a tapered or arcuate shape in a cross section perpendicular to the longitudinal direction. The groove of the housing has a shape that comes into close contact with the back surface when the pin-type contact is pressed.

[0010] In a further preferred aspect of the present invention, the pin-type contactor has a shape in which the tip of the guide portion is tapered rearward as viewed from the insertion direction of the mating electronic component. .

According to the present invention, when the contact mounting portion of the counterpart electronic component is inserted into the recess of the housing, the contact mounting portion of the counterpart electronic component is guided by the guide surface of the guide cover which covers the recess opening surface of the housing. While being guided along, is inserted into the recess through the opening of the guide cover. For this reason, the tip of the contact mounting portion of the counterpart electronic component does not collide with the tip of the pin-type contact, abuts on the guide of the pin-type contact, is guided inside along the inclination thereof, and The contact can be reliably brought into contact with the contact of the other electronic component without damaging the contact.

As described above, since the distal end of the pin-type contact can be protected by the guide cover, it is not necessary to project the distal end of the partition partitioning between the adjacent pin-type contacts in the opening direction of the recess. Even if the arrangement interval of the pin-type contacts is reduced, there is no problem in molding the housing 10.

In a preferred aspect of the present invention, the back surface of the pin-type contact opposite to the contact has a tapered or arcuate shape in a cross section perpendicular to the longitudinal direction, and the groove of the housing presses the pin-type contact. When the pin-type contact is formed integrally with the housing in the case where the pin-type contact is integrally formed with the housing, the pin-type contact may be spring-backed into the recess of the housing by its own elasticity after molding. it can. This makes it possible to manufacture a female connector in which the arrangement interval of the pin-type contacts is narrowed. Further, when the pin-type contact is pressed to the back side by the mating electronic component, the back surface of the pin-type contact comes into close contact with the groove and the positional accuracy is improved, so that the electrical reliability can be improved.

In a further preferred aspect of the present invention, when the tip of the guide portion of the pin-type contact is tapered rearward as viewed from the insertion direction of the mating electronic component, as described above, When the contact is insert-molded integrally with the housing, it becomes easier to spring back the pin-type contact into the recess of the housing after molding.

[0015]

1 to 4 show one embodiment of a female electrical connector according to the present invention. FIG. 1 (a)
1 is a partial plan view, FIG. 1B is a cross-sectional view taken along the line BB ′ of FIG. 1A, and FIG. 2 is a cross-section taken along the line CC ′ of FIG. FIG. 3 is a cross-sectional view taken along the line DD ′ of FIG. 1B showing the back shape of the pin-type contactor. FIG. 4 is a female electrical connector of the present invention, showing a mating electronic component. It is sectional drawing which shows the state which inserted the male connector. It is to be noted that the same parts as those in the conventional example shown in FIG.

The female electrical connector 100 includes an insulative housing 10 and a similarly insulative guide cover 30 placed on the housing 10, and these members are preferably formed of a synthetic resin. ing.

The housing 10 is provided with a slit-shaped recess 11 which is elongated when viewed from the plane direction. The recess 11 is provided with a contact of a mating electronic component, for example, a male electrical connector 200 shown in FIG. The attachment part 210 is inserted. In the recess 11, a plurality of grooves 15 are formed at predetermined pitches on two opposing inner walls in the longitudinal direction. Each groove 15 houses a pin-type contact 20. In this embodiment, the pin-type contacts 20 are mounted on each of the opposing inner walls of the recess 11.
It suffices if it is mounted on at least one side of the inner wall of the first. Further, stepped portions 14 with which the guide covers 30 are fitted are formed at the opening edges of both ends of the concave portion 11 of the housing 10 (see FIG. 2).

The pin-type contact 20 is made of a conductive metal or the like, and its upper side extends in the opening direction of the concave portion 11.
A guide portion 22 having a shape inclined rearward so as to guide the male electrical connector 200 is formed. This pin-type contact 20
The rear surface 24 has a tapered shape in a cross section perpendicular to the longitudinal direction thereof, and the groove 15 for receiving the pin type contact 20 is formed on the rear surface 24 when the pin type contact 20 is pressed against the rear side. It has an inner peripheral shape that is in close contact.
Further, the tip 25 of the guide portion 22 of the pin-type contact 20 is
Each of the male electrical connectors 200 has a tapered shape toward the rear as viewed from the insertion direction. The lower side of the pin-type contact 20 is bent in an L-shape and protrudes outward from the bottom wall of the housing 10 to form a foot 23, which can be soldered to a printed wiring board (not shown). Thereby, the surface mounting of the female electrical connector 100 can be performed.

In this embodiment, when the pin-type contact 20 is formed as described above, the pin-type contact 20 is formed integrally with the housing 10 by insert molding. The elasticity makes it possible to spring back into the recess 11. Therefore, it is possible to further reduce the arrangement interval of the pin-type contacts 20 by using insert molding. The shape of the back surface 24 of the pin-type contact 20 may be an arc in a cross section perpendicular to the longitudinal direction.

On the other hand, the guide cover 30 has a rib 34 formed on the bottom surface thereof to be fitted to the step portion 14 of the housing 10, and the opening surface of the concave portion 11 of the housing 10 is formed by bonding, welding, mechanical fitting or the like. It is stuck to. The guide cover 30 is opened so as to be located inside the tip end 25 of the pin-type contact 20, and the inner periphery thereof is tapered guide slope 3 which is widened toward the male electrical connector 200 side.
1 is provided. This insertion port 33 is
It has an inside diameter into which the contact mounting portion 210 of the male electrical connector 200 can be inserted.

Male electrical connector 2 as a mating electronic component
00 has a protruding contact mounting portion 210 inserted into the recess 11 of the female electrical connector 100, and the contact 220 is provided with a contact 220 on the pin type of the female electrical connector 200. They are mounted at intervals that match the contacts 20. The mating electronic component is not limited to the male electrical connector 100 as described above, but may be an electronic component such as a memory module. In that case, a terminal portion formed on one side of the memory module may be used. Can be inserted directly.

Next, the operation of the female electrical connector 100 will be described. As shown in FIG. 4, when the contact mounting portion 210 of the male electrical connector 200 is inserted into the insertion opening 33 of the guide cover 30 of the female electrical connector 100,
The tip of the contact mounting portion 210 of the male electrical connector 200 comes into contact with the guide slope 31 of the guide cover 30 and slides down along the slope, whereby the opposed pin-type contact 20 of the female electrical connector 100 is It is guided between the 20 guide portions 22. And male electrical connector 2
The contact mounting portion 210 of the female connector 200 spreads the pin-type contacts 20, 20 while sliding on the guide portions 22, 22, and is inserted deeply into the concave portion 11 of the female electrical connector 100. Contact 220 is connected to the corresponding pin-type contact 20 of the female electrical connector 100 by the contact 2
The contact is made at the portion 1 and conduction is made.

As described above, the contact mounting portion 210 of the male electrical connector 200 slides down along the guide slope 31 of the guide cover 30, and the guide portion 22 of the pin-type contacts 20, 20 passes through the insertion opening 33. , 22 so that the contact mounting portion 210 of the male electrical connector 200
However, it is possible to prevent the pin-type contact 20 from being damaged by colliding with the tip 25 of the pin-type contact 20. For this reason, it is not necessary to project the partition 12 in FIG.
Can be further narrowed.

When the contact mounting portion 210 of the male electrical connector 200 is inserted into the concave portion 11 of the female electrical connector 100, the contact 220 of the male electrical connector 200 causes the pin-shaped contact of the female electrical connector 100. The child 20 is pressed to the back side and pressed against the groove 15. At this time, the inner peripheral shape of the groove 15 is the rear surface 24 of the pin type contact 20.
The pin-type contact 20 is held in close contact with the groove 15 and its position is accurately determined, and the matching with the contact 220 of the male electrical connector 200 is improved, and the electrical contact is improved. The connection is made more reliably.

[0025]

As described above, according to the present invention,
A guide cover having an insertion opening which is formed inside the tip of the guide portion of the pin-type contact and has an insertion opening forming a tapered guide slope whose inner periphery is widened toward the other electronic component is separated from the housing. When the contact mounting part of the mating electronic component is inserted by being formed on the body and covering the concave opening surface of the housing, the mating electronic component collides with the tip of the pin-type contact and the pin-type contact is bent. Breakage can be prevented, thereby eliminating the need to protrude the partition wall between the pin-type contacts in the direction of the opening, so that the arrangement interval of the pin-type contacts can be further reduced.

[Brief description of the drawings]

FIG. 1 is a view showing one embodiment of a female electrical connector according to the present invention, wherein (a) is a partial plan view and (b) is (a).
FIG. 7 is a sectional view taken along the line BB ′ of FIG.

FIG. 2 is a cross-sectional view taken along the line CC ′ of FIG.

FIG. 3 is a sectional view taken along the line DD ′ of FIG. 1 (b).

FIG. 4 is a cross-sectional view showing a state where a male connector as a mating electronic component is inserted into the female electrical connector.

5A and 5B are views showing an example of a conventional female electrical connector, wherein FIG. 5A is a partial plan view, and FIG. 5B is a cross-sectional view taken along the line AA ′ of FIG.

[Explanation of symbols]

 Reference Signs List 10 housing 11 recess 14 step 15 groove 20 pin contact 21 contact 22 guide 23 foot 24 back 25 tip 30 guide cover 31, 32 guide slope 33 insertion opening 34 rib 100 female electrical connector 200 male electrical connector 210 Contact mounting part

Claims (3)

[Claims] 1. A housing having a concave portion into which a contact mounting portion of a mating electronic component is inserted, a plurality of grooves formed at a predetermined pitch in an inner wall of the concave portion, and a housing which is housed in the groove of the housing and has a tip. And a plurality of pin-type contacts having a guide portion having a shape inclined rearward so as to extend the opening direction of the concave portion and guide the counterpart electronic component, wherein the guide portion of the pin-type contact member is provided. A guide cover having an insertion opening which is formed so as to be located on the inner side of the front end and which has a tapered guide inclined surface whose inner periphery expands toward the counterpart electronic component side, is formed separately from the housing. A female electrical connector, wherein the female electrical connector is covered by the recess opening surface of the housing. 2. The pin-type contactor has a back surface opposite to the contact point in a cross-section perpendicular to the longitudinal direction, and has a tapered or arcuate shape. The female electrical connector according to claim 1, wherein the female electrical connector has a shape that comes into close contact with the rear surface when a pin-type contact is pressed. 3. The female mold according to claim 2, wherein the pin-type contact has a shape in which a tip end of the guide portion is tapered rearward as viewed from an insertion direction of a mating electronic component. Electrical connector.