JPH0312987A - Printed board - Google Patents

Abstract

PURPOSE:To prevent the disconnection of interconnection wire or damage of a socket in a printed board by producing an uneven shape on the tip plurality of terminal conductors in a card edge connector. CONSTITUTION:A peripheral part of a substrate is provided with a card edge connector 20 which is equipped with a plurality of terminal conductors 30. The terminal conductors 30 comprise recessed ones 31 and projected ones 32 in the tip, are laid out so that they may adjoin each other. Therefore, when the terminal conductors 31 and 32 are connected, their mating metal springs 41 and 42 make a different inserting motion, which does not call for the same magnitude of insertion force at the same time, distributes the force which applies to the metal springs 41 and 42 properly so that they may be inserted with a minimum force. It is, therefore, possible to prevent the generation of disconnection in the printed board or the damage of a socket 40 or the like.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention relates to a printed circuit board 1 to a board having a card edge connector, and in particular, the present invention relates to a printed circuit board 1 to a board having a card edge connector. This relates to the substrate to which the pudding 1 is shaped.

[Prior Art] It is rare for a printed circuit board to be configured as a 11'L-. functional device by mounting all the necessary functional parts on one I- board. be. Rather, in many cases, it is constructed by combining a plurality of printed circuit boards and other parts. Therefore, a means for connecting the printed circuit board and other components becomes necessary. As a means for achieving this, for example, it is known to provide a card edge connector at a suitable location on a printed circuit board, and to make the desired connection using a socket that is mechanically inserted into the card edge connector. It is widely used as a simple and reliable method.

By the way, with the recent improvements in the performance of various electronic devices and computers, printed circuit boards as electronic components have become larger and more dense, and the number of connection terminals on card edge connectors has also become extremely large. Ta. For this,
An extremely large amount of force is required when inserting the connection terminal in the card edge connector. The large force required during this insertion not only reduces the work efficiency of those performing such work, but also places an excessive load on the printed circuit board itself, which may cause disconnections on the printed circuit board or damage to the socket. This is the main cause of serious problems such as damage to the equipment.

FIG. 6 is an illustrative diagram of a card edge connector portion of a conventional printed circuit board.1 In this FIG. 6, an appropriate number of terminal conductors (30 ) to car 1 with edge connector (2
0) is provided. The shapes of the terminal conductors (30) are the same, and the connecting parts with the external conductors are also the same, so that when they are inserted, all the connecting parts have approximately the same size. force is applied. As a result, a large force is required during insertion, resulting in the above-mentioned disadvantages.

[Problems to be Solved by the Invention] The conventional printed circuit boards 1 to 414 have the above-mentioned A=414 structure, and a large force is required to connect the terminal conductor of the card edge connector with the external conductor. This can lead to serious problems such as a decrease in the work efficiency of the person performing the insertion work, breakage of the wire in the printed circuit board due to excessive load being applied to the internal body of the printed circuit board, and damage to the socket 1. One of the main causes of these failures was the problem of being in a bad situation.

This invention was made to solve the above-mentioned problems, and the present invention was made in order to solve the above-mentioned problems. Improving work efficiency by reducing excessive load 1-1
The purpose of this invention is to obtain a substrate for the printer 1 with the same reliability. .

[Means for Solving Problem 1] A printed circuit board according to the present invention is a printed circuit board equipped with a card edge connector connected to an external conductor, wherein a plurality of terminal portion conductors extending to the car I edge connector are connected to an external conductor. One of its characteristics is that its tip has an uneven shape.

1 Effect] According to the present invention, the cars 1 to 1 provided on the printed circuit board
By making the ends of the multiple conductors in the edge connector have an uneven shape, it reduces the stress during insertion (reducing the large load and increasing the required work efficiency), and also reduces the stress on the printed circuit board itself. The reliability of the system is also improved.

[Embodiments] Next, embodiments of a printer 1 to a board having a card edge connector according to the present invention will be described without reference to the related page 1.

First Embodiment FIG. 1 is an illustrative diagram of a card edge connector portion of a board to a printer 1 according to a first embodiment of the present invention. In FIG. 1, a card edge connector (20) equipped with an appropriate number of terminal conductors (30) is installed in a predetermined peripheral area of the printed circuit board (10). Regarding the shape of the conductor (30), there are two types, one with a concave tip and the other with a convex tip. Arranged.

FIG. 2 is a perspective view showing a state in which the printed circuit board of the first embodiment is inserted into a corresponding socket. In this FIG. 2, a (
) A suitable number of terminal conductors (30) in the unique card edge connector (20) are arranged so as to face the corresponding sockets 1140>.

FIG. 3 is an illustrative diagram of a situation in which the terminal conductor contacts the metal spring on the socket side during insertion in the first embodiment. In Fig. 3, the terminal conductors (3]) and (32) in the card edge connector are arranged so as to face the corresponding metal springs (41) and (42) in the socket in sequence. .

Looking at the operation of the first embodiment described in 111, the edge connector (20) is now pushed to the car 1 in the direction of the arrow (F), and the edge connector (20) is pushed into the card edge connector (20).
Vine terminal part conductor (31), (32)... or socket 1
The corresponding metal body spring <41) at ~(/1.0), (
42)... is gradually approached. At this time, the concave tip of the terminal conductor (31) pushes the vicinity of the center of the corresponding metal spring (41), and the adjacent terminal Since the conductor (32) has a concave tip, the corresponding metal spring (4
2) At the same time, press the central part A and the vicinity of 1;
) It will move like pushing up near both ends 1
, Immediately, the socket 1-(4,
0) in the direction shown by the arrow (F), and comes into contact with the corresponding metal springs (41) and (42).

Then, these metal springs (41) and (42) are lifted up and inserted deeper, thereby electrically connecting the terminal conductor and the corresponding metal spring. At this time, the terminal conductors (3]) and (32) have different ways of lifting the corresponding metal body springs (/11) and (42), so the same amount of insertion force is required. Only things you need at a time 1. Therefore, the metal body spring (41), (
42) The force applied to the tube is appropriately distributed, allowing insertion with less force.

According to the first embodiment, when inserting the edge connector (20) into the socket 1-(40) of the car 1, the force required for insertion corresponds to the terminal conductor. It is possible to reliably avoid a situation where an excessive insertion force is applied all at once by appropriately distributing the insertion force to each metal spring.

Thus, according to the first embodiment, it is possible to obtain a printed circuit board that improves the efficiency of the insertion operation and has improved reliability. Note that this eleventh embodiment is as follows:
This is particularly effective when the number of terminals of the car 1 to edge connectors is small.

Figure 4 is an illustrative view of the edge connector portion to the car 1 in the printer 1-board according to the second embodiment of the present invention.

In FIG. 4, a card edge connector (20) having an appropriate number of terminal conductors (30) is provided at a predetermined peripheral portion of the printed circuit board (10).
The terminal conductor (30) is illustratively provided with three different lengths. The terminal conductors (30) having three different lengths are arranged in a predetermined order.

In this way, in this second embodiment as well, when inserting the card edge connector (20) into the corresponding (7') socket, the force required for the insertion is reduced by the force required to connect the terminal conductor and the corresponding metal spring. It is possible to reliably avoid a situation where an excessive insertion force is applied all at once. Note that this second embodiment is particularly effective when the number of terminals in the card edge connector is large. Also,
As mentioned above, in this second embodiment, although the terminal portion conductors (30) are made of three different lengths, it is even more effective to increase the number of different lengths. .

Third Embodiment FIG. 5 is an illustration of the card edge connector portion of the printer 1 to the board according to the third embodiment of the present invention. In FIG. 5, a card edge connector (20) equipped with an appropriate number of terminal conductors (30) is installed (hanged) around a predetermined peripheral portion of the printed circuit board (10). Adjustment protrusions (33) having different lengths are provided at the tip of the conductor (30).

In addition, for the sake of illustration of the iron +j, adjustment protrusions of three different lengths are provided. However, terminal conductors (30) that do not have such adjustment protrusions are also appropriately mixed. In this way, the terminal conductors 30) are arranged in a predetermined order based on the shape of the tip.

In this third embodiment, the card edge connector (2
By changing the effective lengths of the plurality of terminal portion conductors (30) in 0) in a certain predetermined order, it is possible to avoid timing when individually contacting the plurality of metal springs in the bracket. has been done. And to do it like this,
The force required when inserting the card edge connector (20) into the socket is appropriately distributed between the terminal conductors and the corresponding metal springs. Note that this third embodiment is
If there are many terminals in the card edge connector,
In addition, as mentioned above, in this third embodiment, the projections (33) on the terminal conductor (30) are made of three different lengths. , the more types it has, the more effective it is.Furthermore,
In this third embodiment, J3 has individual terminal conductors (30
) σ) When specifying the final shape, the length of the adjustment protrusion (4J) is changed while keeping the shape of the terminal conductor itself the same, so it is easy to carry out such a predetermined operation. become. Furthermore, the force dispersion effect G required when inserting the car I/edge connector (20) into the socket, which is an object of the present invention, is the same as in the first and second embodiments. 1, ru.

[Effects of the Invention] As detailed above, this invention (in this case, it is possible to disperse the force applied when inserting the printer 1 to the board into the corresponding sockets, and as a result, the above-mentioned effects can be achieved. Insertion can be easily performed with a small force.In addition, since excessive force is not applied to the printed circuit board at once during insertion, serious inconveniences such as wire breakage within the printed circuit board can be avoided. Occurrence can be prevented.

[Brief explanation of drawings]

FIG. 1 is an illustrative diagram of the card edge connector portion of the printer I/board according to the first embodiment of the present invention, and FIG.
Figure 3 is a perspective view showing the state in which it is inserted into the
In the embodiment, FIG. 4 is a diagram showing a second embodiment of the present invention, and FIG. FIG. 6, a diagram showing a third embodiment of the present invention, is an illustrative diagram of a card edge connector portion of a conventional printed circuit board. 10 Printed circuit board, 20: Force-1 edge connector, 30 Terminal conductor, 3] (Chevron-shaped convex) terminal conductor, 32 (Chevron-shaped concave) terminal conductor, 33: Adjustment protrusion, 40 Socket 1 41. Metal spring. In the figures, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Claims] (1) A printed circuit board equipped with a card edge connector connected to an external conductor, characterized in that the tip portions of the plurality of terminal conductors in the card edge connector are formed into an uneven shape.