JP2549090Y2 - Electrical circuit connector - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector for an electric circuit which can be held by vacuum suction and is suitable for mounting using an automatic mounting machine.

[0002]

2. Description of the Related Art A conventional connector for an electric circuit comprising a male connector (plug) and a female connector (socket) has a large number of contact pins arranged in the center of a male connector. A large number of pin fitting holes are formed in the center of the female connector, and a plurality of leaf spring-like contact pieces for sandwiching the contact pins are provided inside each pin fitting hole. The male and female connectors are inserted and removed so as to engage and disengage the respective contact pins and the respective pin fitting holes (see Japanese Patent Application No. 58-27301).

[0003]

[Problems to be Solved by the Invention] When mounting components on a printed wiring board or the like, an automatic mounting machine is used. However, as an automatic mounting machine, when a component is moved and positioned at a predetermined position, the component is mounted. What holds by vacuum suction is popular because of its simple structure. In order to hold a component by vacuum suction in this way, a flat and upward suction surface having a certain area is required, but the above-described electric circuit connector has a large number of contact pins and pin fitting holes. Both the male connector and the female connector have an uneven upper surface in the center, so that vacuum suction is impossible. Therefore, in order to automatically mount them on a printed wiring board or the like, there is a problem that an automatic mounting machine having a complicated handling mechanism is required.

[0004] In addition, although the electrical circuit connector tends to be multi-polarized, the above-mentioned electrical circuit connector has a problem that as the number of contact pins increases, the insertion / extraction force increases and the operability deteriorates.

The present invention has been made in view of such a conventional problem.
An object of the present invention is to provide an electrical circuit connector capable of performing vacuum suction suitably and having a small insertion / extraction force.

[0006]

The features of the present invention for solving the conventional problems as described above and achieving the intended purpose are as follows.
An electric circuit connector comprising a male connector and a female connector which includes a plurality of sets of contacts and is mutually inserted and withdrawn,
The male connector has a convex insulating case, the female connector has a concave insulating case, and a flat suction surface is formed on an upper surface of the convex insulating case and an inner bottom surface of the concave insulating case, The contact is formed in a plate shape that makes one-side contact, and the contact piece of the contact is disposed along a side surface of the convex insulating case and an inner side surface of the concave insulating case.

A press-fitting hole is formed on the bottom side of the convex insulating case of the male connector so as to face upward. It is preferable that the fixing piece is press-fitted into the press-fitting hole and fixed to the convex insulating case, and the contact of the male connector projects laterally from the base. It is preferable to have terminal parts arranged in a substantially L-shape.

[0008]

According to the present invention, the male connector and the female connector have a convex and a concave insulating case respectively, and a flat suction surface is formed on the upper surface of the convex insulating case and the inner bottom surface of the concave insulating case. By arranging the contact pieces on the side surface of the convex insulating case and the inner side surface of the concave insulating case, it is possible to secure a relatively wide flat suction surface on the male connector and the female connector. By making the contacts in a plate-like shape that makes one-side contact, it is possible to reduce the friction between the contacts when inserting and removing the male connector and the female connector.

Further, a contact having a fixing piece and a contact piece which are vertically projected from the base and arranged in a substantially U-shape is used for a male connector, and a press-fit hole is formed on the bottom side of the convex insulating case so as to face upward. The contact piece of the male connector contact is lengthened by fixing the contact to the convex insulating case by pressing the fixing piece into the press-fitting hole.
The elasticity can be increased, and the flat portion on the upper surface of the convex insulating case can be widened.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

FIG. 1 shows an example in which the present invention is applied to a two-piece connector for connecting electric circuits of two printed wiring boards A and B. In the figure, reference numeral 10 denotes a male connector and 11 denotes a female connector. I have.

As shown in FIG. 3, the male connector 10 has a convex insulating case 12, and a flat suction surface 16 is formed on the upper surface of the insulating case 12. And
A large number of contact piece fitting grooves 13 are formed on both sides of the insulating case 12 at regular intervals in the horizontal direction, and the lower part thereof is penetrated through the bottom surface of the insulating case 12. Also, on the bottom side of the insulating case 12, fixing piece press-fit holes 14, 14,..., Which are within the thickness of the insulating case 12 and are intermediate between the contact piece fitting grooves 13, 13,. , And the press-fit holes 14, 14,... Have a depth that does not reach the upper surface. The contact piece fitting grooves 13, 13
.. And the fixing piece press-fit holes 14, 14,... Are alternately arranged in a staggered manner in the plan view. Further, the groove 13 and the hole 1 forming a pair with each other are formed on the bottom surface of the insulating case 12.
The contact base fitting groove 15 is formed in an arrangement where 4 are continuous.

As shown in FIGS. 7 and 8, a contact 20 of the male connector 10 has a plate-shaped contact base 21.
The contact piece 22 is protruded in an upright arrangement continuously from the upper edge of
Behind the contact piece upright position, a bent portion 23 is formed to project laterally from the upper edge of the contact base 21, and a fixed piece is formed by bending the tip of the bent portion 23 vertically upward to stand upright. The part 24 is integrally formed. Also,
Lead terminal portion 2 projecting laterally from contact base portion 21
5 are integrally formed. Therefore, the fixed piece 24 and the contact piece 22 of the contact 20 are arranged in a substantially U-shape, and the fixed piece 24 and the lead terminal 25 are arranged in a substantially L-shape.

Then, a large number of contacts 20, 20...
However, as shown in FIG. 3, the contact piece 22 extends along the contact piece fitting groove 13 from the bottom surface of the insulating case 12, and the fixed piece 24 is pressed into the fixed piece press-fitting hole 14.
It is mounted on the insulating case 12 and is supported by press-fitting to the insulating case 12. That is, since the contact piece 22 of the contact 20 is disposed on the side surface of the insulating case 12 and the fixed piece 24 is pressed into the insulating case 12 from the bottom side, the contact 2 is placed on the upper surface of the insulating case 12.
There is no zero portion, and a suction surface 16 having a sufficient width for vacuum suction is secured. Since the contact piece 22 of the contact 20 is formed in a substantially straight line, the fitting groove 13 of the insulating case 12 can be formed relatively shallow.

On the other hand, the female connector 11 has a concave insulating case 30 corresponding to the convex insulating case 12 of the male connector 10 as shown in FIG.
A number of contact piece fitting grooves are vertically formed on the inner side surface of the insulating case 12 so as to correspond to the contact piece fitting grooves 13 of the insulating case 12, and a lower portion thereof is formed on the outer bottom surface of the insulating case 30. Is pierced. Contact 31 of female connector 11
Consists of a contact piece 32 and a lead terminal 33 integrally formed in a substantially L-shape.
However, the contact piece 32 is fixed to the fitting groove on the inner side surface of the insulating case 30, and the lead terminal portion 33 is attached to the insulating case 30 so as to protrude laterally from the outer bottom surface. Therefore, the contact portion 31 does not exist on the inner bottom surface of the insulating case 30, and the suction surface 3 has a sufficient size for vacuum suction.
6 are secured.

When the male connector 10 and the female connector 11 configured as described above are mounted on the printed wiring boards A and B, they can be held by vacuum suction from above via the suction surfaces 16 and 36, respectively. Therefore, reliable and highly accurate mounting can be performed using an automatic mounting machine having a relatively simple structure. Further, since the lead terminal portions 25 and 33 of the contacts 20 and 31 are formed to protrude sideways and are formed long, the contact area with the printed wiring boards A and B is increased, and the strength of the soldered portion may be increased. it can.

The male connector 1 is inserted into the female connector 11.
0, the contact piece 3 of the contact 31 is pressed.
2 is pressed against the contact piece 22 of the contact 20, the contact piece 22 bends rearward, and the two are pressed by the elastic force. Since the contact 20 and the contact 31 come into contact only on one side, the frictional force between the two is small. Also, the contact piece 2 of the contact 20
2 is a substantially U-shaped arrangement with respect to the fixing piece 24,
The male connector 10 is formed in a long shape rising from the bottom surface to the upper surface, and has a high elasticity. Therefore, the insertion / extraction force between the male connector 10 and the female connector 11 is reduced, the operability is improved even when the number of poles is increased, and the load on the soldering portion is reduced.

[0018]

As described above, the electrical circuit connector according to the present invention has a male connector and a female connector having a convex and concave insulating cases, respectively, and the upper surface of the convex insulating case and the inside of the concave insulating case. A flat suction surface is formed on the bottom surface, and the contact piece of the contact is arranged on the side surface of the convex insulating case and the inner side surface of the concave insulating case. Therefore, automatic mounting on a printed wiring board or the like can be suitably performed. And, by making the contact into a single-sided plate shape, the force for inserting and removing the male connector and the female connector can be reduced, and operability can be improved.

Further, a contact having a fixing piece and a contact piece, which are vertically protruded from the base and arranged in a substantially U-shape, is used for a male connector, and a press-fit hole is formed on the bottom side of the convex insulating case so as to face upward. By fixing the contact to the convex insulating case by pressing the fixing piece into the press-fitting hole, the vacuum suction of the male connector can be more suitably performed, and the insertion and removal of the male connector and the female connector can be performed. The force can be further reduced.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an entire assembled state of an embodiment of the present invention.

FIG. 2 is a sectional view of a female connector.

FIG. 3 is a sectional view of a male connector.

FIG. 4 is a plan view of the male connector.

FIG. 5 is a half sectional view of an insulating case of the male connector.

FIG. 6 is a sectional view taken along line AA in FIG.

FIG. 7 is a side view of a contact of the male connector.

FIG. 8 is a rear view of the contact of the male connector.

[Explanation of symbols]

 A, B: Printed wiring board 10: Male connector 11: Female connector 12: Insulating case 13: Contact piece fitting groove 14: Fixed piece press-fitting hole 15: Base fitting groove 16 Suction surface 20 Contact 21 Base 22 Contact piece 23 Bending part 24 Fixed piece 25 Terminal part 30 Insulating case 31 Contact 32 Contact piece 33 Terminal 36 ... Suction surface

Claims (2)

(57) [Scope of request for utility model registration] 1. An electrical circuit connector comprising a plurality of sets of contacts and comprising a male connector and a female connector which are inserted and withdrawn from each other, wherein the male connector has a convex insulating case, and the female connector has a concave insulating case. A flat suction surface is formed on an upper surface of the convex insulating case and an inner bottom surface of the concave insulating case, and the contact is formed in a plate shape that makes one-side contact. A connector for an electric circuit, which is arranged along a side surface of a shaped insulating case and an inner side surface of the concave shaped insulating case. 2. A press-fitting hole is opened on the bottom surface side of the convex insulating case of the male connector toward the upper surface, and the contact of the male connector projects perpendicularly from the base and is disposed in a substantially U-shaped fixing piece. The electrical circuit connector according to claim 1, further comprising: a contact piece; and the fixing piece is press-fitted into the press-fitting hole and fixed to the convex insulating case.