JPH09232052A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector whose inserting force is low and extracting force is high by improving springiness of a contact in the inserting-extracting direction. SOLUTION: Connecting parts 12a and 22a to be respectively connected to a pair of printed circuit boards are derived, and a socket 1 and a header 2 where contacts 12 and posts 22 having contact parts 12e and 22b to be contacted with each other by being mutually inserted and extracted are arranged in respective main bodies 11 and 21, are provided. In the contacts 12, the contact parts 12e can deflect in the inserting-extracting direction and its orthogonal direction, and in a connector having round parts 12d between the connecting parts 12a and the connecting parts 12e, the contacts 12 are constituted so that the contact parts 12e are positioned on the almost round center line of the round parts 12d in the inserting-extracting direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector for connecting a pair of printed circuit boards respectively connected to a socket and a header.

[0002]

2. Description of the Related Art Conventionally, as this type of connector, there is one having a structure shown in FIGS. This one has connection parts A1 and B respectively connected to a pair of printed circuit boards.
1 is drawn out, and the contact portions A2 that are brought into contact with each other by inserting / removing
The contact A3 is provided with a contact A3 having a B2 and a post B3 on each of the main bodies A4 and B4, and the contact A3 has a contact portion A2 which can be bent in the inserting / removing direction and a direction orthogonal to the contact portion. It has a rounded portion A5 between it and A2.

However, this is the main body A4 of the socket A.
The contact portion A2 of the contact A3 provided at is not located substantially on the radius center line of the radius portion A5 in the insertion / removal direction, but is positioned on the opposite side of the radius center line from the radius center line. Further, when automatically mounted on a printed circuit board, a suction tape or the like is attached to the socket A and the header B.

[0004]

In the above-mentioned conventional connector, the connecting portion A1 of the contact A3 and the connecting portion B1 of the post B3 are respectively connected to the printed circuit board, and the contact portion A2 of the contact A3 and the contact portion of the post B3 are connected. B2 can be brought into contact with each other to connect between the pair of printed circuit boards.

However, when the contact portion B2 of the post B3 is inserted into the contact portion A2 of the contact A3, the contact A3 has a small spring property in the insertion direction and is hard to bend, and when a predetermined force or more is applied, the rounded portion A5 is plastically deformed. Was buckled. Therefore, the insertion force is high.

Further, when the post B3 is removed from the inserted state, the rounded portion A5 of the contact A3 buckles, the contact portion A2 does not follow the contact portion B2 of the post B3, and the removal force is low. . Here, when vibration or impact is applied to the product in a state where the printed circuit board is incorporated in the product, the printed circuit board may be removed if the removal force is low, and therefore a high removal force is required.

The present invention has been made in view of the above circumstances. An object of the present invention is to provide a connector having a low insertion force and a high extraction force by improving the spring property of the contact in the insertion / removal direction. is there.

[0008]

In order to solve the above-mentioned problems, according to a first aspect of the present invention, a contact part which is connected to each of a pair of printed circuit boards and which is brought out of contact with the other is inserted and removed. The contact is provided with a socket and a header, each of which has a contact and a post in its main body, and the contact has a curved portion between the connecting portion and the contact portion and the contact portion can be bent in the inserting / removing direction and the orthogonal direction. In this connector, the contact portion is configured such that the contact portion is located on a substantially radius center line of the radius portion in the insertion / removal direction.

According to a second aspect of the present invention, in the first aspect of the present invention, the contact is bent into a substantially U shape so that a space between the connecting portion and the rounded portion is press-fitted into the main body. And is formed so as to bend toward the side opposite to the rounded portion side in the insertion / withdrawal orthogonal direction.

According to a third aspect of the present invention, in the first aspect, the contact portion abuts against the tip of the contact portion of the post so as to bend in the insertion direction by a predetermined stroke when the post is inserted. Is provided.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the header and the socket are provided with recesses and protrusions which are fitted to each other, and the bottom surface of the recess or the head surface of the protrusion is formed. At least one of them is a suction surface when it is automatically mounted on the printed circuit board.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to FIGS.

Reference numeral 1 denotes a socket, which is composed of a first main body 11 and a contact 12. The first main body 11 is formed of an insulating resin in a substantially rectangular parallelepiped shape, and has a first press-fitting hole 11a having a substantially U-shaped cross section that is open on one side and is open on both sides.
A communication hole communicating with the press-fitting hole 11a is provided on each side of the center line in the longitudinal direction. Further, the protrusion 11b protruding from the one surface side has the head surface 11c on the other surface side.
And is provided along the longitudinal direction.

The contact 12 is stamped and formed from a plate-shaped metal such as copper or copper alloy, and has a first connecting portion 12a as one end and a U-shaped portion extending from the first connecting portion 12a.
U-shaped portion 12b bent in a V shape and a boundary portion 12c
And a rounded portion 12d that is formed in a rounded shape and extends from the U-shaped portion 12b. Further, the first contact portion 12e extending from the rounded portion 12d is
The first contact portion 12e is provided with a contact surface inside 2d.
An abutting portion 12f is provided at the tip of the so as to be bent and formed on the side opposite to the rounded portion 12d side. That is, the radius portion 12d is provided between the first connecting portion 12a and the first contact portion 12e,
A U-shaped portion 1 is provided between the first connecting portion 12a and the rounded portion 12d.
There will be 2b.

The U-shaped portion 12b is press-fitted into the first press-fitting hole 11a of the first main body 11 having a substantially U-shaped cross section from one surface side, and the first connecting portion 12a is led out from the first main body 11. At the same time, the first contact portion 12e is introduced into the communication hole of the first main body 11.

Reference numeral 2 denotes a header, which includes a second body 21 and a post 22.
It is composed of The second main body 21 is formed of an insulating resin into a substantially rectangular parallelepiped shape, is provided with a recess 21b having a bottom surface 21a that is open to one surface side, and has a second press-fitting hole with respect to a longitudinal centerline. The recesses 21b are provided side by side on both side walls along the longitudinal direction.

The post 22 is formed by stamping and forming a plate-shaped metal of copper or copper alloy, and comprises a second connecting portion 22a and a second contact portion 22b bent from the second connecting portion 22a. The second contact portion 22b is press-fitted into the second press-fitting hole of the second main body 21, the second connecting portion 22a is led out from the second main body 21, and the second contact portion 22b is located at the center of the longitudinal direction. The two main bodies 21 are arranged side by side in the longitudinal direction on both sides of the recess 21b.

Head surface 11c of the protrusion 11b of the socket 1
Also, the bottom surface 21a of the recess 21b of the header 2 is sucked as a suction surface, and the first connection portion 12a of the socket 1 and the second connection portion 22a of the header 2 are connected to a pair of printed circuit boards respectively and automatically mounted. It

The post 22 of the header 2 is inserted into the first contact portion 12e of the contact 12 of the socket 1, and the recess 21b of the header 2 and the projection 11b of the socket 1 are fitted to each other so that the recesses are provided in each. 21b bottom surface 21a and projection 11
The head surface 11c of b contacts. In this way, the second contact portion 22b of the post 22 contacts the first contact portion 12e of the contact 12, and the pair of printed boards is electrically connected.

Here, the first contact portion 12 of the contact 12
e is formed so as to be located substantially on the center line of the radius center of the radius portion 12d in the insertion / removal direction of the post 22. Therefore, the length of the curved piece formed in the curved surface from the boundary portion 12c between the U-shaped portion 12b and the rounded portion 12d to the first contact portion 12e is longer than in the conventional case.

When the post 22 is inserted into the first contact portion 12e of the contact 12, first, the tip of the contact portion of the post 22 contacts the contact portion 12f of the contact 12, and the contact 12 bends in the inserting direction. At this time, the contact 12
Since the first contact portion 12e of the contact 12 is located on the radius center line of the rounded portion 12d and the length of the curved piece is longer than in the conventional case, the bending and the stress due to the bending are uniformly applied to the curved piece. The stress is concentrated on the rounded portion 12d so that the post 2 does not buckle and buckles with a low insertion force.
2 easily bends in the inserting direction. It bends in the insertion direction by a predetermined stroke, and when it exceeds the predetermined stroke, it returns to a stable state.

The contact 12 is composed of the first contact portion 12
Since e is located on the center line of the rounded portion 12d, it bends in a well-balanced manner in the direction orthogonal to the insertion direction as in the insertion direction. On the other hand, the first contact portion 12e is replaced with the rounded portion 12d.
Earl part 12d not on the center line but on the center line
If it is inside, the balance of the bending in the insertion direction and the direction orthogonal to the insertion direction becomes unbalanced and the buckling occurs.

Further, when the post 22 is removed from the contact 12, since the rounded portion 12d of the contact 12 is not buckled in the insertion direction of the post 22, the contact 12 bends and follows the removal direction of the post 22.

In the connector of this embodiment,
As described above, since the first contact portion 12e of the contact 12 provided on the main body of the socket 1 is located on the radius center line of the radius portion 12d in the insertion / removal direction, the post 2
When 2 is inserted into and removed from the first contact portion 12e of the contact 12 and comes into contact with the contact 12, the contact 12 flexes in a balanced direction in the orthogonal direction without buckling as in the conventional case in the inserting and removing direction.
It can be inserted with a low insertion force, and when it is removed, it does not buckle in the insertion / removal direction, so it can follow the post 22 and have a high removal force.

Also, the first connecting portion 12a and the rounded portion 12d.
The U-shaped portion 12b formed by bending in a substantially U-shape between and is press-fitted into the first main body 11 to easily hold the contact 12 in the socket 1, and the contact 12 in the insertion / withdrawing orthogonal direction. Since the U-shaped portion 12b is not displaced because it bends to the opposite side of the rounded portion 12d, excessive stress is not applied,
It is possible to reduce the deterioration of the spring property of the contact 12.

Since the contact portion 12f is provided at the tip of the contact portion of the contact 12, when the post 22 is inserted, the tip of the contact portion of the post 22 first comes into contact with the contact portion 12f, and the contact 12 has a predetermined stroke. It bends in the insertion direction by an amount, and when it exceeds this predetermined stroke, it returns to a stable state, and snap action property, that is, click feeling can be obtained.

Further, a recess 21b and a protrusion 11b which are fitted to each other are provided in the header 2 and the socket 1, respectively, and the bottom surface 21a of the recess 21b or the head surface 11 of the protrusion 11b is provided.
Since at least one of c is used as the suction surface, the suction surface can be sucked with depressurized air or the like, and automatic mounting can be easily performed without using a suction tape or the like unlike the conventional case. .

In this embodiment, the header 2 is inserted into or removed from the socket 1 and the post 22 is inserted into or removed from the contact 12, but the contact 12 may be inserted into or removed from the post 22, that is, the contact 12 and the post. There is no limitation as long as 22 and 22 are inserted into and removed from each other and contacted.

[0029]

According to the first aspect of the present invention, since the contact portion of the contact provided on the body of the socket is located on the approximate center line of the round portion in the insertion / removal direction, the contact portion of the post or the contact is inserted / removed with respect to each other. Contact with each other, the contacts will not buckle in the insertion / removal direction as in the conventional case and can be bent in the orthogonal direction in a well-balanced manner, and can be inserted with a low insertion force.When removing, there is no buckling in the insertion / removal direction. The removal force can be increased by following the post.

According to a second aspect of the present invention, in addition to the effect of the first aspect, a U-shaped portion bent and formed in a substantially U-shape between the connecting portion and the rounded portion is press-fitted into the main body. The contact is easily held in the socket, and the contact bends in the direction opposite to the rounded portion side in the insertion / withdrawal orthogonal direction.
It is possible to reduce the deterioration of the spring property of the contact without the displacement of the character-shaped portion and the application of excessive stress.

According to the third aspect of the present invention, in addition to the effect of the first aspect, the contact portion is provided at the tip of the contact portion of the contact. Upon contact with the contact portion, the contact bends in the insertion direction by a predetermined stroke, and when the contact exceeds the predetermined stroke, the contact returns to a stable state and snap action, that is, a click feeling can be obtained.

According to a fourth aspect of the present invention, in addition to the effect of the first aspect, a recess b and a protrusion which are fitted to each other are provided in the header and the socket, respectively, and the bottom of the recess or the head of the protrusion is provided. Since at least one of the surfaces is used as an adsorption surface, this adsorption surface can be adsorbed by depressurized air or the like, and automatic mounting can be easily performed without using an adsorption tape or the like as in the past. .

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a state in which a socket and a header are fitted together, showing an embodiment of the present invention.

FIG. 2 is a sectional view of the above socket.

FIG. 3 is a front view of the above socket.

FIG. 4 is a bottom view of the above socket.

FIG. 5 is a sectional view of the header of the above.

FIG. 6 is a front view of the header of the above.

FIG. 7 is a bottom view of the above header.

FIG. 8 is a sectional view of a socket showing a conventional example.

FIG. 9 is a front view of the above socket.

FIG. 10 is a sectional view of the header of the above.

FIG. 11 is a front view of the header of the above.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 socket 11 1st main body 11b convex part 11c head surface 12 contact 12a 1st connection part 12b U-shaped 12d rounded part 12e 1st contact part 12f contact part 2 header 21 2nd main body 21a bottom face 21b recess 22 post 22a 4th 2 connection part 22b second contact part

Claims (4)

[Claims] 1. A socket and a header, each of which has a contact portion and a post having a contact portion which is connected to a pair of printed circuit boards and which is contacted by being inserted into and removed from the main body, and a socket, and a header. Is a connector in which the contact portion can bend in the insertion / removal direction and the direction orthogonal thereto and has a rounded portion between the connection portion and the contact portion, wherein the contact has a substantially rounded shape of the rounded portion in the insertion / removal direction. A connector characterized by being located on the center line. 2. The contact is bent into a substantially U-shape so that a space between the connecting portion and the rounded portion is press-fitted into the main body, and the contact is directed to a side opposite to the rounded portion side in a direction perpendicular to the insertion / removal direction. The connector according to claim 1, wherein the connector is formed to be flexible. 3. The contact is provided with an abutting portion that abuts a tip of a contacting portion of the post so as to bend in the inserting direction by a predetermined stroke when the post is inserted. connector. 4. When a recess and a protrusion which fit with each other are provided in the header and the socket, respectively, and at least one of a bottom surface of the recess and a head surface of the protrusion is automatically mounted on the printed circuit board. The connector according to claim 1, wherein the connector is a suction surface of the connector.