JPS5855670Y2 - Printed board - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a divided printed circuit board having a structure in which divided pieces are connected by jumper wires.

For split-type printed circuit boards, after connecting the divided pieces with jumper wires across the dividing line, when dividing the printed circuit board from the dividing line and assembling it, bend the printed circuit board so that the jumper wires are on the outside. , there was a problem that the jumper wire would be pulled and cut.

For this reason, conventionally, when wiring jumper wires across the dividing line on a divided printed circuit board, the jumper wires were slackened in advance and formed long, for example, in an arc shape or a U-shape.

By doing this, the jumper wires will not be pulled when bending the printed circuit board, so there will be no cutting accidents, but it will require a step to shape the jumper wires into a predetermined shape, and since the jumper wires will be deformed, the printed circuit board will be bent. Installation becomes a hassle.

In recent years, automatic insertion devices that automatically insert jumper wires, electronic components, etc. into printed circuit boards have been widely used, but when using such devices, it is difficult to change the sequence control program if the shape of the jumper wires is different. However, there were disadvantages such as the need for this method and the operation being troublesome.

This idea was made in view of the above points, and the purpose is to provide a printed circuit board that does not break the jumper wires even when the printed circuit board is bent, and has good assembly workability. It is in.

In order to achieve this objective, this invention alternately forms protrusions and recesses along the dividing lines of the divided pieces of printed circuit boards, and engages the protrusions and recesses of each divided piece to form jumper wires. It is designed so that it is slack.

This invention will be explained in detail below based on the drawings.

FIG. 1 shows the state of an embodiment of the printed circuit board according to this invention before being divided, in which a is a plan view and b is a side view.

In the figure, reference numeral 1 denotes a divided printed circuit board, and this printed circuit board is provided with a square-shaped dividing line 2 so as to be divided into divided pieces 1a and 1b.

Reference numeral 3 designates a plurality of rectangular through-holes formed in the same shape across the dividing line 2. By means of the through-holes 3, protrusions 4a and recesses 5a are alternately formed in the dividing piece 1a along the dividing line 2. Further, convex portions 4b and concave portions 5b are alternately formed along the dividing line 2 on the divided piece 1b.

In addition, at this time, the width of the convex portions 4 a and 4 b is a, and the width of the concave portion 5 is
If the widths of a and 5b are b, the dimensions of the through hole 3 are set such that a<b.

Further, 6a is a through hole drilled near the base of the protrusion 4a of the dividing piece 1a, 6b is a through hole drilled near the base of the protrusion 4b of the split piece 1b, and 7 is the dividing line 2. Jumper wires 8a and sb are provided straight between the through holes 6a and 6b in order to connect the divided pieces 1a and 1b by straddling the bent ends of the jumper wires 7 and connected to the divided pieces 1a and 1b. These are solders to be connected to the lb wiring conductors (not shown), respectively.

After wiring the jumper wire 7 to the printed circuit board 1 having the through hole 3 in this manner, the printed circuit board 1 is divided into the dividing pieces 1a and 1b along the dividing line 2.

Thereafter, the divided pieces 1a and 1b are laterally shifted from each other, and the convex portions 4a, 4b and the concave portions 5b, 5a are engaged with each other.

FIG. 2 shows a state in which the convex portion and the concave portion are engaged with each other after division, and a is a plan view and b is a side view.

The convex portions 4a of the divided piece 1a fit into the concave portions 5b of the divided piece 1b, and the convex portions 4b of the divided piece 1b fit into the concave portions 5a of the divided piece 1a.
into each.

As a result, the distance between the through holes 6a and 6b becomes shorter, and the jumper wire 7 becomes slack.

Next, the divided pieces 1a and 1b are bent at a predetermined angle.

FIG. 3 shows a state in which the two divided pieces are bent and crossed at an angle, in which a is a front view, b is a side view, and c is a partial perspective view.

In this state, the jumper wires 7 enter the ■-shaped interval formed by the slanted convex portions 4a and 4b, so that the adjacent jumper wires 7 are connected to the convex portions 4a and 4b.
are isolated and do not come into contact with each other.

In such a split type printed circuit board, when it is bent, the distance between the through holes becomes shorter than before splitting, so the jumper wire becomes slack and there is no disconnection due to tension, and the V-shaped spacing part of the raised part of the palm structure is Since the jumper wires are inserted, contact between adjacent jumper wires is prevented.

Furthermore, the bent parts of the printed circuit board are interlocked, so they will not come off even if force is applied from the outside.
It is especially strong against mechanical stress in the lateral direction, and no stress is applied to the jumper wire, eliminating breakage.

Furthermore, in this embodiment, the protrusions and recesses are formed at once by punching through holes across the parting line, which improves productivity.

FIG. 4 is a plan view of another embodiment before division.

In the figure, the same parts as in FIG. 1 are given the same reference numerals, and the explanation thereof will be omitted.

The through hole 13 is formed in a substantially T-shape across the dividing line.

For this reason, the convex portion 14 a, the concave portion 15 a, and the convex portion 14
The recesses 15b and 15b are formed alternately, but their widths are significantly different.

Then, the width of the convex portion 14a is a, and the width of the concave portion 15a (7) is b.
, where the width of the convex portion 14b (7) is C1 and the width of the concave portion 15b is d, the dimensions are set such that a<d, b>C.

The other configurations are the same as those of the previous embodiment.

FIG. 5 shows another embodiment, in which a is a plan view of the state before division, and b is a plan view of the state bent before division.

In the figure, the same parts as in FIG. 1 are given the same reference numerals, and the explanation thereof will be omitted.

The through hole 23 is formed in a triangular shape across the dividing line 2.

By means of the through holes 23, inverted trapezoidal convex portions 24a and inverted trapezoidal concave portions 25a are alternately formed along the dividing line 2 in the dividing piece 1a, and in the dividing piece 1b along the dividing line 2. Trapezoidal convex portions 24b and triangular concave portions 25b are formed alternately.

After dividing the printed circuit board 1 from the dividing line 2, the convex portion 2
4a into the recess 25b and the protrusion 24b into the recess 25a, respectively, and bend the divided pieces 1a and lb at an angle.

The convex portions 24a and 24b engage with each other in a closed palm shape to obtain a strong combination structure, but since the tip of the convex portion 24a in particular is wider than the base, it separates in the direction of the arrow shown in Fig. 5. There's nothing left to do.

As a result, the assembly strength of the divided pieces 1a and 1b is further improved.

FIG. 6 shows another embodiment, in which a is a plan view of the state before division, and b is a plan view of the state bent after division.

In the figure, the same parts as in FIG. 1 are given the same reference numerals, and the explanation thereof will be omitted.

The through hole 33 is formed in a trapezoid shape across the dividing line 2.

Through the through holes 33, inverted trapezoidal convex portions 34a and inverted trapezoidal concave portions 35a are alternately formed along the dividing line 2 in the dividing piece 1a, and trapezoidal convex portions 35a are formed in the dividing piece 1b along the dividing line. 3
4b and trapezoidal recesses 35b are formed alternately.

Here, if the width of the base of the convex portion 34b is a, and the width of the base of the concave portion 35a is b, the dimensions are set such that a<b.

The rest of the structure is the same as the embodiment shown in FIG.

In this embodiment as well, since the tip of the convex portion 34a is wider than the base, separation in the direction of the arrow shown in FIG. 6 is prevented, and the assembly strength of the divided pieces 1a and 1b is increased.

In each of the above embodiments, the dividing line is formed by a V-shaped groove, but it can also be formed by arranging pores in a straight line.

In this way, according to the printed circuit board of this invention, the jumper wires become slack when bent, and each divided piece is firmly assembled, so accidents such as the jumper wires being pulled and cut are eliminated, and the adjacent jumper wires become loose. Comrades are isolated by the convex part, so they never come into contact.

Additionally, since there is no need to deform and form the jumper wires into long enough lengths before dividing the printed circuit board, it becomes extremely easy to insert the jumper wires into the through holes of the printed circuit board, especially automatic insertion work, which improves productivity. It has many excellent effects, such as:

[Brief explanation of the drawing]

Fig. 1a is a plan view of an embodiment of the printed circuit board according to this invention before division, Fig. 1 is a side view thereof, Fig. 2a is a plan view after division, and Fig. 2 is a side view thereof. , FIG. 3A is a front view when folded, FIG. 3 is a side view thereof, FIG. 3C is a partial perspective view thereof, FIG. 4 is a plan view of another embodiment before division, and FIG.
Figure a is a plan view of another embodiment before division, Figure 5 is a plane view when folded, Figure 6 a is a plane view of another embodiment before division,
FIG. 6 is a plan view when folded. 1...Printed circuit board, LA, LB...
Dividing piece, 2...Parting line, 3...Through hole,
4a, 4b... Convex portion, 5 a, 5 b...
... recess, 6 a , 6 b ... through hole, 7 ... jumper wire, 8 a , 8 b ...
...Solder.

Claims (1)

[Scope of utility model registration request] In a printed circuit board in which divided pieces of a divisible printed circuit board are connected to each other by jumper wires across a dividing line, protrusions and recesses are alternately formed along the dividing line of the divided pieces, and each divided piece A printed circuit board characterized in that the convex portion and the concave portion of the printed circuit board are engaged with each other so that the jumper wire becomes slack.