JPH0749744Y2 - Connector mis-connection prevention structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an erroneous connection prevention structure for a plurality of connectors mounted in a matrix on a printed board of an electronic device.

Generally, the printed board and the external cable are plug-in connected using a connector, and the number of pins of the connector is inevitably increased as the density of the printed board increases. Therefore, if the number of connectors is reduced, the number of pins of one connector increases, so that the insertion / removal force becomes very large, and it becomes difficult to ensure the connection of all pins. Will be required. On the other hand, a method in which a large number of pins are divided into blocks with a relatively small number of pins and a separate connector is used for each block is advantageous in terms of reduction of insertion / removal force. However, in this case, a large number of pins are used. In order to effectively use the space of the connectors, matrix mounting in which the connectors are arranged side by side in the vertical and horizontal directions is often adopted. Therefore, it is possible to prevent an error in the polarity of the connector itself and an error in the connection between adjacent connectors. Will be needed.

[Prior Art] Conventionally, the above-mentioned connector misconnection preventing device prevents an error in polarity of a single connector, and is provided with misconnection preventing means at an appropriate position between the jack side case and the pin side case. ing.

[Problems to be Solved by the Invention] By the way, in the above-mentioned conventional device, since the polarity of a single connector is prevented from being incorrect, when the connector is applied to a plurality of connectors, the connectors are erroneously connected. There is no protection.

Further, in order to prevent incorrect connection of the connectors, for example, as shown in Japanese Utility Model Application Laid-Open No. 55-57985, each connector is formed in a different shape, and mechanical insertion is performed except for a predetermined part. Some have made it impossible, but
If all the connectors have different shapes, it is necessary to manage the shapes of various connectors when a large number of connectors are arranged side by side on the printed circuit board, which causes a significant reduction in mounting efficiency. I had one.

The present invention has been made to solve the above-mentioned drawbacks, and provides a connector misconnection preventing structure capable of reliably preventing misconnection to an adjacent part only by managing a small number of types of connectors. The purpose is to do.

[Means for Solving the Problems] According to the present invention, the above object is to provide a large number of pins 2 standing on a printed board 1 to the printed board 1.
A plurality of rectangular connecting portions 4a, 4b, ... Are formed by dividing them into a predetermined number by a lattice-shaped guide 3 fixed on the upper portion, and connectors 5a, 5b ,.・ Main body 6
In the matrix mounting in which the respective plugs are fitted to each other and plug-in connected, the connecting portions 4a, 4b ,.
.. are provided for each of the recesses 9a, 9b, ..., And the wall surfaces of the main body 6 of the connectors 5a, 5b, .. can be fitted into the recesses 9a, 9b, .. Convex parts 8a, 8
b, ···, and four connecting portions 4a, 4b, each consisting of two vertical and horizontal two
The concave portions 9a, 9b, ... Are provided at different positions in each block B that divides the printed circuit board 1 in a grid pattern by using the different types of connectors 5 in the same block B.
a, 5b, ... are prevented from being fitted, and the arrangement pattern of the recesses 9a, 9b, ... in the block B is the same in all blocks B, and the space between the adjacent connecting portions 4a, 4b ,. Connector 5a, 5b,
-Achieved by providing an erroneous connection prevention structure that prevents erroneous connection of.

[Operation] In order to surely prevent erroneous insertion of the connector on the printed board 1, it is possible to make all the connector shapes on the printed board 1 different so that the connector cannot be inserted to a portion other than a predetermined mounting site. desirable.

However, when a large number of connectors are mounted on the printed board 1, it is not practical in terms of management and mounting efficiency to make the shapes of all the connectors different, and moreover, it is necessary to mount the connectors normally. Experience has shown that mis-insertion during work is very often performed between adjacent objects, and at least prevention of mis-insertion during this period is very important for reducing the overall defective rate. ing.

Based on the above recognition, the present invention was made with the aim of maximizing the effect of preventing erroneous insertion by using as few types of connectors as possible. A large number of pins 2 are divided into a predetermined number by a grid-shaped guide 3 to form connection parts 4a, 4b ,.

On the wall surface of the grid-shaped guide 3, concave portions 9a, 9b, ... Are provided for each of the connecting portions 4a, 4b ,.
4b, ... Connector 5a, 5b, ..., In the wall surface of the main body 6 of the concave portion 9a, 9b ,.
By providing different positions of the concave portions 9a, 9b, ..., The fitting of the connectors 5a, 5b, ... Having the convex portions 8a, 8b, ..

Further, a block B is composed of a plurality of the connecting portions 4a, 4b ,. Each block B has a total of 4 vertical and horizontal 2 of the connection portions 4a, 4b, ...
The connection portion 4a in each block B
By making the positions of the recesses 9a, 9b, ... In 4b, ... Different, incorrect connection in the same block B is prevented.

On the other hand, the arrangement patterns of the concave portions 9a, 9b, ... In the block B are all the same, and as a result, erroneous connection between the adjacent connection portions 4a, 4b ,. Adjacent connection parts 4a, 4 that have the most chance of incorrect connection only by managing the types of connectors 5a, 5b, ...
Prevents incorrect connection to b ,.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 is a printed board, and a large number of pins 2 are provided upright on the back surface of the printed board 1. The pins 2 are divided into a predetermined number by a lattice-shaped guide 3 to form a rectangular shape. Connection parts 4a, 4b, ... Are formed.

The connectors 5a, 5b, which are connected to the connection portions 4a, 4b, ...
.. is a rectangular body 6 that fits tightly inside the guide 3.
And a cover 7 for covering the body 6 and the like. A jack (not shown) is housed and arranged in the main body 6 in the same manner as the pin 2 while being connected to a cable.

Therefore, the plurality of connecting portions 4a, 4b, ... And the connector
5a, 5b, ... that match each other, that is, 4a and 5a, 4b
In 5b ..., the convex portions 8a, 8 are provided on one side of the main body 6 side.
.. are formed on the guide 3 side along the insertion / removal direction. Then, the uneven portions 8a and 9 of each set
The positions of a, 8b and 9b, ... Can be engaged, but 8a and 9a
The positions 8b and 9b are offset from each other.

With the above configuration, each of the plurality of connectors 5a and 5b, ... Has its projections 8a, 8b, ... And the recesses 9a, 9b ,.
.. The direction of insertion makes the insertion direction clear, and the positional relationship makes compatibility clear. Therefore, for example, when the connector 5a is inserted into the matching connecting portion 4a so as to be fitted thereto, the main body 6 is fitted into the connecting portion 4a and is flag-in connected while being guided by the engagement of the concave and convex portions 8a and 9a. On the other hand, if the connector 5a is to be inserted into the other connecting portion 4b, the connection becomes impossible due to the non-coincidence of the concave and convex portions 8a and 9b, and erroneous connection is prevented.

In addition, the protrusions 8a, 8b, ... Of the connector are initially a plurality of types of protrusions 8a, 8b whose positions are different on the body 6 of each connector.
.. are extended from the cover 7 and all connectors are manufactured to have the same shape, and when the connection position to the printed board 1 becomes clear, leave only one necessary convex portion 8a and cut the other Can be individualized. As a result, mass productivity of the connector alone and ease of storage are improved.

Next, referring to FIG. 2, an actual usage state of matrix mounting will be described. First, one block B is formed on the printed board 1 side by four types of connection portions 4a to 4d, and four types of recesses 9a to 4d are formed on the guide 3 side of each connection portion 4a to 4d.
9d are installed at different positions. The connectors for these connecting portions 4a to 4d are provided with projections 8a, 8b, ... Which can be fitted into the recesses 9a, 9b .. It becomes possible to connect to the connection part accurately.

[Effects of the Invention] As described above, according to the present invention, in matrix mounting of a plurality of connectors, it is possible to prevent erroneous connection with a small number of types of connectors, thus reducing manufacturing costs. Moreover, management becomes easy.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a connector misconnection preventing structure of the present invention, and FIG. 2 is a view showing a usage state of matrix mounting. In the figure, 3 is a guide, 4a, 4b, ... Are connection parts, 5a, 5b ,.
Is a connector, 6 is a main body, 8a, 8b, ... are convex portions, 9a, 9
b, ... Denote concave portions.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kyoichiro Kono, 1015 Kamiodanaka, Nakahara-ku, Kawasaki-shi, Kanagawa, within Fujitsu Limited (72) Creator Charjia Socker, USA, California, Santa Cruz, Childers Lane, 3050 (72) Creator C. Timothy Norman, USA, California, San Jose, Taomino Street, 5898 (56) References 55-26894 (JP, U) Actually opened 55-57985 (JP, U) Japanese Patent 46-38228 (JP, B1) Japanese Patent 42-13905 (JP, B1)

Claims (1)

[Scope of utility model registration request] 1. A plurality of rectangular connecting portions are formed by dividing a large number of pins erected on a printed board into a predetermined number by a grid-like guide fixed on the printed board, and a connector is provided at each connecting portion. In the matrix mounting in which the main bodies are fitted and plug-in connected to each other, the wall surface of the grid-like guide is provided with a recess for each connection portion, and the wall surface of the main body of the connector is provided with the recess of the guide. In each block, which is provided with projecting protrusions for preventing mis-insertion that can be fitted, and which divides the printed board into a grid pattern with four connecting portions, each of which is two in length and width, the above-mentioned recesses are different. Are installed at different positions to prevent different types of connectors from mating in the same block, and the arrangement pattern of the recesses in the block is the same in all blocks, Misconnection preventing structure of a connector to prevent erroneous connection of the connectors.