JPH06163125A - Connector between substrates - Google Patents

Abstract

PURPOSE:To provide a connector between substrates which are connected unforcibly with each other while absorbing the difference of installation positions CONSTITUTION:A housing 11 can absorb the difference by shifting a reverse U-shape spring piece 15b of a contact 15 to a side while bending the spring piece. As a result, the position of a post 14 and the position of an insertion hole 10 of the housing 11 are made conformable with each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a board-to-board connector.

[0002]

2. Description of the Related Art A board-to-board connector has a connector 2 for receiving a post on one printed board 1 as shown in FIG.
Is provided, and a connector 4 having a post is provided on the other printed circuit board 3 side to connect the connectors 2 and 4,
The two printed boards 1 and 3 are electrically and mechanically joined. By the way, as shown in FIG. 6, a plurality of connectors 2, ..., 3 ...
When using the connector to attach the connector 2 ...
If there is an error a between the mounting positions of the connectors 3, ..., The positions of the posts and the positions of the holes for inserting the posts do not match, and thus the bonding cannot be performed.
It is often practiced to bend the printed circuit board 3 having a large pitch to match the pitch between the connectors 2 ...

However, in such a method, stress is applied to the printed circuit board, the connector, and the soldering portion fixing the connector to the printed circuit board, and the soldered portion sometimes peels off. In order to avoid such a problem, it is required to make the connector mounting accuracy extremely high, but in this case, a new problem arises that the assembly becomes difficult.

What is provided there is a structure of a connector as shown in FIG. In this connector, as shown in the figure, the leg 7 of the contact is elongated and the lower end is penetrated through the base 5, so that the head 6 accommodating the post receiving portion of the contact can be moved laterally by the bending of the leg 7 of the contact. By this movement, the post can be inserted into the insertion hole 6a of the head 6 without difficulty in accordance with the mounting pitch of the connector mounted on the other printed circuit board.

[0005]

In the structure shown in FIG. 7, the height of the connector becomes high, which causes a mounting problem.
The D-type connector had an inappropriate structure. The present invention is
The present invention has been made in view of the above-mentioned problems, and the object of the invention of claim 1 is that the height is not high, the error in the mounting position is absorbed, and the joining can be performed reasonably, and the terminal is removed when the post is removed. To provide a board-to-board connector in which stress is not applied to the soldering part.

It is an object of the present invention to provide a board-to-board connector in which stress is not applied to the soldered portion when the housing is moved.

[0007]

To achieve the above object, the invention according to claim 1 is such that a housing having a plurality of post insertion holes penetrating therethrough and a contact which is press-fitted and fixed into the insertion hole from the lower surface of the housing. One end is continuously connected to the lower ends of the spring piece and the contact spring piece, and is connected to the other end of the inverted U-shaped spring piece and the other end of the inverted U-shaped spring piece arranged on the outer side of the housing and fixed to the printed circuit board by soldering. And a metal member that is fixed to the printed circuit board and that restricts the upward movement of the housing. The housing is laterally movable while bending the inverted U-shaped spring piece. It is arranged as follows.

According to a second aspect of the present invention, in the first aspect of the present invention, the housing is housed movably in both directions in a frame-shaped outer shell fixed to the printed circuit board by the metal fitting. An inverted U-shaped spring piece of the contact is arranged between the inner wall surface of the outer shell and the outer side of the inverted U-shaped spring piece is press-fitted and fixed in a groove formed on the inner wall surface of the outer shell. .

[0009]

According to the first aspect of the present invention, even if an error occurs in the mounting pitch of the connector, the housing is moved laterally while bending the inverted U-shaped spring piece on the outer side of the housing to make contact. The position of the post and the insertion hole can be aligned without generating stress on the part or the soldering part, and it is not necessary to increase the connector mounting accuracy, and the inverted U-shape on the outer side of the housing Since the connector is bent by the spring piece, the height can be reduced. When the post is further removed, the housing tries to pull upward due to frictional force, but since the movement of the housing is regulated by the metal fitting, the metal fitting receives all the stress at the time of the removal and the soldering part There is no transmission, and the reliability of the soldered portion, which is a problem particularly in the case of the SMD type connector, is improved.

According to the second aspect of the invention, the outer shell is fixed to the printed circuit board by the metal fittings, and the contacts are press-fitted and fixed in the groove of the outer shell, so that the soldering part is moved when the housing is moved. Stress is not transmitted.

[0011]

The present invention will be described below with reference to the drawings. Figure 2
Shows a perspective view of an embodiment constituting an SMD type connector. In this embodiment, an insertion hole 10 for inserting a post is shown.
A frame-shaped outer shell 12 that houses a plurality of housings 11 that are pierced in two rows in a row so as to be movable in both directions, and for preventing the housing 11 from floating and fixing the outer shell 12 to a printed circuit board. The metal fitting 13 is provided.

Each insertion hole 10 of the housing 11 is an independent square hole. As shown in FIG. 1, the contact spring pieces 15a of the contacts 15 are directed upward from the lower surface side of the housing 11 as shown in FIG. The contact spring piece 1 is inserted when the post 14 is inserted from the upper surface opening of the insertion hole 10.
The post 5 is elastically contacted with the post 14 in the direction of the inner wall surface parallel to it, and is electrically connected.

The contact 13 is formed by bending a metal spring material into the shape shown in FIG. 3, and has a contact spring piece 15a.
The protrusions 15e provided on both sides of the lower end of the contact spring piece 15a are pressed against the inner wall of the insertion hole 10 as shown in FIG.
Is press-fitted and fixed in the insertion hole 10, and an extension piece extending outward from the lower end of the contact spring piece 15a is further bent in an inverted U shape so as to be parallel to the outer wall surface of the housing 11 to form an inverted U-shaped spring piece 15b. The lower end portion of the outer side of the inverted U-shaped spring piece 15b is press-fitted and fixed to the groove 16 provided in the lower portion of both inner side walls of the outer shell body 12 corresponding to each contact 15. At this time, as shown in FIG. 5, the protrusions 15c projecting from both sides of the lower end of the outer side of the inverted U-shaped spring piece 15b are pressed against the inner wall surfaces of both sides of the groove 16.

The contact 15 further includes an inverted U-shaped spring piece 15.
The lower end of the outer side of b is extended outward and the extension piece constitutes a terminal 13d for fixed connection to the pattern of the printed board by reflow soldering. The metal fittings 13 provided on the outer surfaces of both ends of the outer shell body 12 are fixed pieces 1 provided on the lower ends of both side legs.
3a is fixed to the printed circuit board by reflow soldering, and as shown in FIG. 4, projecting pieces 13b penetrating the outer shell body 12 from the central piece and projecting into the outer shell body 12 are provided on the lower outer surface of both ends of the housing 11. It is located above the protruding portion 11a protruding from the housing 11 and regulates the upward movement of the housing 11.

Thus, the connector of this embodiment constructed as described above has terminals 15d of each contact 15 and metal fittings 13.
By fixing the fixing piece 13a of 1 to the pattern of the printed circuit board by reflow soldering. It is mounted on a printed circuit board. If there is an error in the mounting pitch of the connector when joining the post 14 of the connector provided on another Punlint board, the housing 11 is moved to the side while bending the inverted U-shaped spring piece 15b of the contact 15. By doing so, the error is absorbed, the position of the post 14 and the position of the insertion hole 10 of the housing 11 are aligned, and smooth insertion joining can be performed.

Further, the outer shell 12 is fixed to the printed board by the metal fitting 16, and the contact 15 is provided with the groove 16 of the outer shell 12.
Since it is press-fitted and fixed in, the stress to the soldered portion is not transmitted when the housing 11 is moved. When the post 14 is removed, the housing 11 tends to be pulled upward by frictional force, but the protrusion 16a of the housing 11 hits the protrusion 16b of the metal fitting 16 and the housing 11
The metal fitting 16 receives all the stress at the time of withdrawal to prevent the movement of the
The reliability of the soldered portion, which is a problem in the case of the D-type connector, is improved.

Although the SMD type connector is constructed in the above embodiment, it may be adopted as a dip type connector, in which case the metal fitting 16 may be fixed to the printed circuit board with screws or the like, and the contact 15 may be used. The terminal 15d may be formed in a direction orthogonal to the printed board. Further, after soldering the contacts 15, the outer shell 15 may be removed.
Also in this case, the metal fitting 16 for restricting the upward movement of the housing 11 or a means having the same function as that is necessary.

[0018]

According to the first aspect of the present invention, the housing has a plurality of insertion holes penetrating the post, the contact spring piece press-fitted into the insertion hole from the lower surface of the housing, and one end of the contact spring piece is connected to the lower end of the contact spring piece. And a contact composed of an inverted U-shaped spring piece arranged on the outer side of the housing and a terminal connected to the other end of the inverted U-shaped spring piece and fixed by soldering to the printed circuit board, and a printed circuit board. Since the housing is arranged so that it can be moved laterally while bending the inverted U-shaped spring piece, there is an error in the mounting pitch of the connector. Even if it comes out, by moving the housing laterally while bending the inverted U-shaped spring piece on the outside of the housing, the position of the post and the insertion hole can be aligned without causing stress on the contact part and soldering part. Since the connector does not need to be mounted with high precision and the connector is bent by the inverted U-shaped spring piece on the outer side of the housing, the height can be reduced and the post can be further improved. When pulling out, the housing tries to pull upward due to frictional force, but since the movement of the housing is restricted by the metal fitting, the metal fitting receives all the stress at the time of pulling out and the transmission to the soldering part In particular, the reliability of the soldered portion, which is a problem in the case of the SMD type connector, is improved.

According to a second aspect of the present invention, the housing is housed movably in both directions in a frame-shaped outer shell fixed to the printed circuit board by the metal fitting, and the housing and the inner wall surface of the outer shell are provided. Since the inverted U-shaped spring piece of the contact is arranged between them and the outer side of the inverted U-shaped spring piece is press-fitted and fixed in the groove formed in the inner wall surface of the outer shell, the soldering part is moved when the housing is moved. The effect is that the stress to the body is not transmitted.

[Brief description of drawings]

FIG. 1 is a front sectional view of a main part of an embodiment of the present invention.

FIG. 2 is a perspective view of the same.

FIG. 3 is an enlarged perspective view of the above contact.

FIG. 4 is an enlarged cross-sectional view with a part of the above-mentioned main part omitted.

FIG. 5 is an enlarged perspective view of a main part of the above with a part thereof being omitted.

FIG. 6 is a diagram illustrating a conventional use of a board-to-board connector.

FIG. 7 is a perspective view of another conventional connector.

[Explanation of symbols]

 10 Insertion Hole 11 Housing 12 Outer Shell 15 Contact 15a Contact Spring Piece 15b Reverse U-Shaped Spring Piece 15d Terminal 16 Groove

Claims (2)

[Claims] 1. A housing having a plurality of post insertion holes penetrating therethrough, a contact spring piece press-fitted and fixed into the insertion hole from the lower surface of the housing, and one end of the contact spring piece is connected to the lower end of the contact spring piece and arranged outside the housing. Of the housing, which is fixed to the printed board and a contact which is formed by connecting the inverted U-shaped spring piece to the other end of the inverted U-shaped spring piece and which is fixed to the printed board by soldering. A board-to-board connector comprising: a metal fitting for restricting upward movement; and a housing arranged so as to be laterally movable while bending an inverted U-shaped spring piece. 2. The frame is housed in a frame-shaped outer shell fixed to the printed circuit board by the metal fittings so as to be movable in both directions, and the contact is reversed between the housing and the inner wall surface of the outer shell. The board-to-board connector according to claim 1, wherein a U-shaped spring piece is arranged, and the outer side of the inverted U-shaped spring piece is press-fitted and fixed in a groove formed on the inner wall surface of the outer shell.