JPH0719118Y2 - Jig for connector connection - Google Patents

Description

[Detailed Description of the Invention] [Outline] Regarding a connector connecting jig used to assist when mounting a flat lead type connector for a surface mount type printed circuit board, when mounting a flat lead type connector for a surface mount type printed circuit board For the purpose of providing a connector connecting jig capable of preventing the deformation of the jack contact, it has a shape that can be inserted / removed from the side between the rows of the jack contacts that are arranged in the upper and lower two rows protruding from the connector body. One flat edge of one flat thin metal plate is in an open state, and the other edge is bent in a U shape so that the open state can be opened and closed. It is composed of a short expansion plate and an expandable body which is sandwiched between the bent inner surfaces and expands / contracts by press-fitting / excluding a fluid to open / close a metal plate facing the expansion plate.

[Industrial application field]

The present invention relates to a connector connecting jig used to assist when mounting a flat lead type connector for a surface mount type printed circuit board.

A printed circuit board with a surface mounting structure, in which an electronic circuit is sealed with a resin mold or the like, and lead wires derived from this electronic component are connected by soldering to a lead wire connection footprint provided on the printed circuit board, is a printed circuit board. Since electronic parts can be mounted on both front and back surfaces, it has recently been used as a printed circuit board capable of high-density mounting. With the development of higher density, the number of contacts of the connector for connecting the printed circuit board and the external device is increasing, and the number of jack contacts of one connector is over 150 at present. An increase in the number of jack contacts inevitably leads to an increase in friction at the time of insertion / removal, and realization of an improvement measure that facilitates insertion of a connector is desired.

[Conventional technology]

FIG. 5 shows a cross-sectional view of a flat lead type connector corresponding to a conventional surface mount type printed circuit board. In the figure, 1
Is a surface mount printed circuit board, and 1a and 1b are surface mount type printed circuit boards 1 (hereinafter simply referred to as printed circuit boards).
Plug contacts consisting of parallel patterns formed on the front and back edges of the, 2 is a flat lead type connector (hereinafter simply referred to as a connector) to be fitted and connected to the plug contacts 1a, 1b, 2a, 2b, 2c are long, Medium and short flat lead type jack contacts (hereinafter simply referred to as "jack contacts") are arranged alternately in the direction perpendicular to the paper surface, and are connected to the plug contacts on the front side of the printed circuit board.
2d and 2e are also long and short jack contacts, which are alternately arranged in the direction perpendicular to the paper surface and are connected to the plug contacts on the back side of the printed circuit board. The number of jack contacts can reach 75 even if it contacts one side of the printed circuit board.

2f is a resin-molded connector body, 2g-2k
Connector jack 2a to 2e to connector body 2f
The flat-type jack contacts are connected inside and the flat-type plug contacts inserted from the outside are fitted and connected. A pair of positioning mechanisms (not shown) are provided on both sides of the connector 2 in the direction perpendicular to the paper surface and on both sides of the plug contact 1a of the printed circuit board 1 in the direction perpendicular to the paper surface. Position the contacts accurately. Since the present invention has no vertical relationship with the above-mentioned flat plate type jack contacts 2g to 2k and the positioning mechanism, description thereof will be omitted in the drawings described below.

[Problems to be solved by the invention]

In the connector 2 used for the printed circuit board, the gap size (for example, 1.35 mm) of the opposing jack contacts is the thickness of the plug contact portion of the printed circuit board (for example, 1.8 m).
Due to the constraint that a suitable elastic contact pressure must be maintained for m) it is not possible to have a sufficiently open gap size. Therefore, when the printed circuit board 1 is moved in the direction of arrow A and is inserted and connected between the jack contacts of the connector 2, pressure is applied in an unreasonable direction to the tip portions of the jack contacts, which causes deformation such as bending. .

The present invention has been made in view of the above conventional drawbacks, and an object of the present invention is to provide a connector connecting jig capable of preventing deformation of a jack contact when a connector for a printed circuit board is mounted.

[Means for solving problems]

FIG. 1 shows a schematic perspective view of a connector connecting jig of the present invention and a connector and a printed circuit board corresponding to the jig. Jack contacts 2a are arranged in two rows which project from the connector body 2f _-1 ~2a _-n; in the form of a removably from the side between the columns of 2d _-1 ~2d _-n, two plane strips One edge of the metal thin plates 3a, 3b in the lateral direction is opened,
An extension plate 3 that is integrally formed by bending the other end into a U-shape or a U-shape so that the opening state can be opened and closed, and an extension plate 3 that is shorter than the length of the jack contact, and is sandwiched inside the extension plate 3 that is bent. The expandable / contractible body 4 expands / contracts by press-fitting / excluding the fluid and opens / closes the facing thin metal plates 3a, 3b of the expansion plate 3.

[Action]

In FIG. 1, jacks are arranged in two upper and lower stages projecting from the connector body 2f with respect to plug contacts formed in a plurality of parallel patterns on the front and back sides of the end of the printed circuit board 1 (the back side is not shown). Contact 2a _{-1 to} 2a _-n ; 2d _-1
In the case of inserting and connecting so as to be sandwiched by ~ 2d _-n, an expansion plate 3 for expanding the facing interval of the jack contacts by inserting the fluid into the facing space between the upper and lower two stages before the inserting is extended. The sandwiched stretchable body 4 is inserted, and the stretchable body 4 is expanded to increase the facing distance between the jack contacts, which facilitates the printed circuit board 1
The tip portions of the plug contacts can be inserted into the enlarged tip portions of both jack contacts. When the tip portion can be inserted in the loose state, the fluid pressure is reduced, the elastic body 4 is contracted and withdrawn from the insertion position, and then the plug contact and the jack contact can be smoothly inserted and connected. it can.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, in order to make the description of the configuration and the operation easy to understand, the same reference numerals are given to the same portions throughout the drawings, and the duplicated description will be omitted.

FIG. 2 is a principle diagram for explaining the order of use of the connector connecting jig of FIG. Fig. 2 (a) shows the printed circuit board and the connector facing each other before using the jig. For easy understanding, only jack contacts 2a and 2d are placed facing each other, and other jack contacts are shown. Omitted. The jack contacts 2a and 2d, respectively 2a _-1 to 2A region _-n vertically to the paper surface; and consists of an array of n lines (not shown) of the 2d _-1 ~2d _-n. The thickness of the printed circuit board 1 including the plug contacts 1a and 1b is wider than the facing distance between the jack contacts 2a and 2d, indicating that the insertion connection requires insertion force against the pressing resilience of both jack contacts. .

FIG. 2 (b) shows a diagram in which the connector connecting jig is inserted from the side surface of the jack contact. The connector connecting jig is composed of two flat strip-shaped thin metal plates 3a arranged opposite to each other.
An extension plate 3 formed by bending one end edge of 3b in the lateral direction into an open state and bending the other edge into a U-shape or a U-shape so that the open state can be opened and closed, and the extension plate Balloon-shaped telescopic body 4 which is sandwiched by 3 and partially fixed by an adhesive or the like, and which communicates with a fluid (for example, air) press-fitting / excluding means (for example, a pump attached to a sphygmomanometer) not shown.
It consists of and.

The size of the entire jig when the air is reduced by air pressurization / exclusion means (not shown) in communication with the balloon-shaped telescopic body 4 is such that the flat plate-shaped metal thin plates 3a of two flat strips facing each other of the expansion plate 3 are arranged. And 3b are formed so that the open ends of the jack contacts 2a and 2d face each other toward the plug contact side while sliding in a space orthogonal to the jack inserting / removing direction. The insertion of the expansion plate 3 is stopped at a position where the thin metal plates 3a and 3b face all the jack contacts 2a and 2d.

FIG. 2 (c) is a view in which the expansion plate is expanded to widen the facing distance of the jack connector, and air is pressed in and expanded by the air pressurization / exclusion means (not shown) communicating with the balloon-shaped telescopic body 4, As a result, the metal thin plates 3a and 3b of the expansion plate 3 are expanded, and the jack contact 2a that abuts the metal thin plates 3a and 3b.
As a result of expanding the facing spaces of 2 and 2b, the edge of the printed board 1 can be easily inserted to a position where it abuts against the open end of the expansion plate 3. At this inserted position, the air pressure is reduced by an air pressure inserting / excluding means (not shown), the telescopic body 4 is reduced, and the entire jig is pulled out from the jack connector. Then, the plug contact and the jack contact can be easily inserted and connected. It can be performed.

FIG. 3 is a diagram showing a first embodiment of the present invention. FIG. 3 (a) is an insertion diagram of the connector connecting jig, and FIG. 3 (b) is a diagram in which the edge of the printed circuit board is inserted into the connector. As shown in FIG. 3 (a), the plug contact 1a
If the contact positions of the jack contacts 2a, 2b, 2c contacting and connecting with and the contact positions of the jack contacts 2d, 2e contacting and connecting with the plug contact 1b are deviated by the required dimension in the direction of arrow A, the whole structure It is not possible to insert the edge of the printed circuit board by expanding the facing gap of the jack contact. In this embodiment, the flat lead type jack contacts 2c and 2e cannot contact the plug contacts 1a and 1b when the expansion plate 3 is contracted, and the size is set to be insertable to about 3/5 of the total number of contacts. is doing.

As shown in FIG. 3 (b), the jack contacts 2a and 2b corresponding to the plug contact 1a and the plug contact 1b.
The jack contact 2d corresponding to is expanded by the open end of the expansion plate 3 and the edge of the printed circuit board 1 can be inserted. When the expansion plate 3 is contracted and pulled out in this state, 2e returns to its original state. However, since the pressing force of about 3/5 of the total number of jack contacts is applied to the printed circuit board, the friction force for inserting and connecting the connector is reduced by 3/5, so that the insertion pressure in the impossible direction is largely reduced. The rate of occurrence of deformation such as bending can be reduced.

FIG. 4 is a perspective view showing a second embodiment of the present invention. In the figure, the expansion plate 3 and the expansion / contraction body 4 are formed in a "bellows" shape, and the size of the expansion plate 3 in the longitudinal direction is made larger than the size that covers all the arrayed jack contacts. A fluid press-fitting pipe 5 is provided which communicates with the telescopic body 4 from the end face, and is connected to the air press-fitting / excluding means 4a. This has an advantage that the method of FIG. 4 can be carried out more easily than when the fluid press-fitting pipe 5 is connected to the expandable body on the side face when the size of the opening of the expansion plate 3 is very small, about 2 mm.

[Effect of device]

As is apparent from the above description, according to the present invention, there is an effect that the flat lead can be prevented from being deformed when the flat lead type connector for the surface mount type printed circuit board is mounted by the jig having the simple structure.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a connector connecting jig of the present invention and a connector and a printed circuit board corresponding to the jig, and FIG. 2 is a principle for explaining the order of using the connector connecting jig of FIG. 3 and 4 are views showing a first embodiment of the present invention, FIG. 4 is a perspective view showing a second embodiment of the present invention, and FIG. 5 is a flat surface corresponding to a conventional surface mount type printed circuit board. The sectional view of a lead type connector is shown. In FIG. 1, 2a _{-1 to} 2a _-n and 2d _{-1 to} 2d _-n are jack contacts, 2f is a connector body, 3 is an expansion plate, and 3a and 3b.
Indicates a thin metal plate, and 4 indicates a stretchable body.

Claims (1)

[Scope of utility model registration request] 1. Jack contacts (2a _{-1 to} 2a _-n ; 2d _-1 to 2a _{-1 to} 2a _{-1 to} 2a _{-1 to} 2a _{-1 to} 2a _{-1 to} 2a _{-1 to} 2a _{-1 to} 2a _{-1 to} 2a _{-1 to} 2a _{-1 to} 2a _{-1 to} 2a _{-1 to} 2a _{-1 to} 2a _{-1 to} 2a _{-1 to} 2a _{-1 to} 2a _{-1 to} 2a _-1
2d _-n ) that can be inserted and removed from the side between the rows, and one edge of the two flat strip-shaped metal thin plates (3a, 3b) in the lateral direction is open, and the other edge is open. An expansion plate (3) which is integrally formed by bending the edge into a U-shape or a U-shape so that the opening can be opened and closed, and an inner side surface of the expansion plate (3) that is bent. And a stretchable body (4) which is sandwiched between the two and expands / contracts by press-fitting / excluding a fluid to open / close the facing thin metal plates (3a, 3b) of the expansion plate (3). Jig for connector connection.