JPH0453034Y2 - - Google Patents

Description

[Detailed Description of the Invention] The wiring protection board for circuit boards of the present invention will be explained according to the following items.

A. Industrial field of application B. Overview of the invention C. Background art [Figure 7] D. Problem that the invention attempts to solve [Figure 7] E. Means for solving the problem F. Example a Base substrate [Fig. 1] Figures to Figures 3, 5 and 6] b Card board [Figures 1, 5 and 6] c Wiring protection board [Figures 1, 3 to 6] d Wiring protection Attaching the plate to the base board [Fig. 1,
Figure 3, Figure 5, Figure 6] e Attaching the card board to the connector [[Figure 1, Figure 6]
5 and 6] G. Effects of the invention (A. Field of industrial application) The present invention relates to a novel wiring protection board for circuit boards. Specifically, for example, a circuit board, such as a motherboard, is provided with a plurality of connectors to which a circuit board called a so-called card board is attached, and a wiring cord for connection is located between the plurality of connectors. This invention relates to a wiring protection board for a circuit board for protecting the wiring cord of a circuit board, which does not limit the layout of the printed wiring circuit, etc. of the circuit board on which the connector is installed, and also prevents mounting on the circuit board. This can be done in approximately one motion and without the use of any special fixing means.Furthermore, it is possible to cover the wiring cord located between two adjacent connectors regardless of the distance between them. It is an object of the present invention to provide a novel wiring protection board for a circuit board that can be installed on a circuit board.

(B Summary of the invention) The wiring protection board for a circuit board of the present invention is a wiring protection board for a circuit board that is provided with a plurality of connectors and is used to cover and protect the wiring cords located between the plurality of connectors. The circuit board is formed into a substantially plate-like shape using flexible synthetic resin, and is curved to cover the area between two adjacent connectors of the circuit board, making use of the elasticity produced by the bending. As a result, the layout of the printed wiring circuit, etc. on the circuit board is not restricted, and the mounting on the circuit board can be done in approximately one operation, and without using any special fixing means. It can be done even if
Moreover, it is possible to arrange the connector between two adjacent connectors regardless of the size of the distance between the two connectors.

(C Background Art) [FIG. 7] Today, electronic circuits are generally constructed by mounting predetermined electronic components etc. on a circuit board on which a predetermined printed wiring circuit is formed.

In addition, for electronic circuits with complex structures such as computer circuits, the entire circuit is divided into several blocks, and these multiple block circuits are installed separately on a circuit board called a card board. It is often constructed by providing a plurality of connectors on a base board called a so-called motherboard on which connection circuits are formed to connect the cards to each other, and attaching the card board to the connectors.

FIG. 7 shows an example a of a board structure having such a card board and base board.

In the figure, b is a base board (only a part of which is shown in the drawing), and a predetermined connection circuit is formed on the base board b, and a first connector c for attaching a card board, c, . . . (only two are shown in the drawing) are provided at appropriate intervals. d, d, . . . are terminal holes of the first connectors c, c, .

Note that e, e, ... are second connectors for connecting the connection circuit formed on the base board b to a circuit other than the circuit formed on the card board, and these second connectors e, e, ... are arranged in a portion of the base board b between the first connectors c, c, ..., and are connected to one ends of a large number of wiring cords f, f, ....

g, g, ... are card substrates (only two are shown in the drawing), and these card substrates g, g,
A predetermined block circuit is formed in ..., and
Terminal pins h, h, . . . arranged in a substantially comb-like shape are attached to one side thereof.

Therefore, the terminal pins h, h, ... of the card boards g, g, ... are connected to the terminal holes d, d of the first connectors c, c, ... corresponding to the card board.
The block circuits formed on the card substrates g, g, . . . are connected to the connection circuits formed on the base substrate.

(Problem that the invention aims to solve) [Figure 7] By the way, a circuit board is usually provided with a plurality of wiring cords, and in particular, in the board structure a shown in Figure 7, the base Since a large number of wiring cords f, f, . . . are located on the side of the board b on which the connectors c, c, . . . and e, e, . are bound at several places by binding members i, i, ... to prevent the wiring cords f, f, ... from being positioned randomly, and to protect the wiring cords f, f, ..., and This prevents the wiring cords f, f, . . . from coming into contact with other parts and causing damage to the parts.

However, simply binding the wiring cords f, f, ... with such a binding member does not fix the position of the wiring cords f, f, ..., so for example, when the equipment is moved, the wiring cords may If the position shifts, it may come into contact with the card boards g, g, etc., which may cause malfunction.

In particular, in the board structure a shown in FIG. 7, card boards g, g, ... are attached to first connectors c, c, ... provided on the base board b; As shown in the figure, when some of the wiring cords f, f, ... are caught on the top surface of the first connectors c, c, ..., the card boards g, g,
When attaching ... to the connectors c, c, ..., the wiring cords f, f, ... will be sandwiched between the card boards g, g, ... and the first connectors c, c, .... Terminal pins h, h of card board g, g, ...
... are the terminal holes d, d of the first connectors c, c, ...
There is a problem that it becomes impossible to completely insert it into...

Therefore, in such a board structure a, in order to fix the positions of the wiring cords f, f, ... with respect to the base board b as much as possible, some of the wiring cords f, f, ... are connected to some kind of code. A fixing member is used to fix the cord to the base board b, and as such a cord fixing member,
Conventionally, so-called coating pins, wire clips, soldering type cord fixing members, etc. have been used.

However, such a cord fixing member
Since this itself is directly fixed to the base board b,
It is necessary to prepare a space on the base board b to attach these cord fixing members, and therefore, the printed wiring circuit on the base board b and the connectors c, c, ... and e, e, ... There is a problem that the layout etc. of the arrangement are restricted, and if such a space cannot be prepared on the base board b, these cord fixing members cannot be used.

Since such a cord fixing member only holds part of the wiring cords f, f,...
In order to fix the position of the entire wiring cord, it is necessary to use a large number of cord fixing members. There is a problem in that cord fixing members of different sizes must be used, and there is also a problem in that special work is required to attach these cord fixing members to the base board.

(E. Means for Solving the Problems) In order to solve the above-mentioned problems, the circuit board wiring protection board of the present invention is made of flexible synthetic resin and is formed into a substantially plate shape, and is attached to the circuit board. The connector is curved so as to cover the portion of the circuit board between the two connectors, and can be provided in such a manner that both ends of the connector are in elastic contact with the side surfaces of the two connectors.

Therefore, according to the wiring protection board for a circuit board of the present invention, there is no need to directly fix the wiring protection board to the circuit board, so there is no need to prepare a space for fixing the wiring protection board to the circuit board. Therefore, there is no restriction on the layout of the printed wiring circuit on the circuit board, and installation to the circuit board is as simple as curving this wiring protection board and bringing its both ends into elastic contact with the opposing surfaces of two adjacent connectors. Since it is completed in just one step, the installation to the circuit board can be completed in almost one motion.
This can be done without using special attachment means, and even if the distance between two adjacent connectors is not constant, if the size of the curvature is made to correspond to the size of the distance, 2 It can be used regardless of the size of the spacing between the two connectors.

(F. Embodiment) Details of the circuit board wiring protection board of the present invention will be described below with reference to embodiments shown in the accompanying drawings.

In the embodiment shown in the drawings, the present invention is applied to a wiring protection board for a circuit board provided with a large number of connectors for mounting card boards.

(a Base substrate) [Figures 1 to 3, Figure 5,
FIG. 6] Reference numeral 1 denotes a base board called a motherboard, and on the bottom surface of the base board 1, a connection circuit (not shown) constituting a so-called system bus is formed by a predetermined printed pattern.

2, 2, ... are connector holders for holding a first connector to be described later, and these connector holders 2, 2, ... are formed of a metal material, and have a shape when viewed from the longitudinal direction. The U-shaped openings are arranged in parallel with each other at a predetermined interval, with two U-shaped openings facing each other. 2a, 2a, . . . are fixed to the base substrate 1.

3, 3, . . . are first connectors to which a card board, which will be described later, is removably attached, and most of the connectors 3, 3, . It is provided in a substantially embedded manner in the main parts 3a, 3a, ... and its lower end is the main part 3a, 3
Connecting pins 4, 4, ... protruding downward from a, ...
(See FIG. 6. Only the lower end portions are shown in the drawing.) A large number of first connectors 3, 3, ... are arranged in two rows along the longitudinal direction. Further, the upper ends of the main portions 3a, 3a, 3a, 3a, 4, 4, . . .
Terminal holes 5, 5, . . . are formed that open on the upper surface.

At both ends in the longitudinal direction of the main parts 3a, 3a, ... of these first connectors 3, 3, ..., notches 6, 6, ... has been formed, and the first
The connectors 3, 3, ... are the main parts 3a, 3a, ...
into the connector holders 2, 2 with both ends thereof being sandwiched between the lower piece 2a and the upper piece 2b of the two connector holders 2, 2, . held,
Moreover, it is fixed to the connector holders 2, 2 by a fixing means (not shown).

The first connectors 3, 3, . . . are attached to the connector holders 2, 2, . At the same time, the lower ends of the connecting pins 4, 4, . . . are soldered to a connecting circuit formed on the lower surface of the base substrate 1.

Thus, the first connectors 3, 3, ... are attached to the upper surface of the base board 1 via the connector holders 2, 2, and the first connectors 3,
3. Between the bottom surface of the base board 1 and the top surface of the base board 1, there are gaps 7, 7,... having a height equal to the thickness of the lower pieces 2a, 2a... of the connector holders 2, 2,... (see Figure 6) will be possible.

8, 8, ... are second connectors for connecting the connection circuit formed on the base board 1 and the wiring cords 9, 9, ..., and these second connectors 8,
8, . . . are connecting pins 8b arranged in a portion of the base board 1 between two adjacent first connectors 3, 3, and provided substantially embedded in the fixing portions 8a, 8a, . , 8b, . . . (see FIG. 6) are soldered to connection circuits formed on the lower surface of the base board 1, and connecting portions 8c, 8c, . . . to which wiring cords 9, 9, . . . are connected. is the fixed part 8a,
8a, . . . in a detachable manner.

The other ends of the wiring cords 9, 9, . . . are connected to other circuits not shown, and are bound at several points by binding members 10, 10, .

(b card board) [Fig. 1, Fig. 5, Fig. 6] 11, 11, . . . are card substrates.

A predetermined block circuit is formed on each of these card boards 11, 11, .
2, . . . are attached so that a part thereof protrudes from the one side edge and is arranged in a substantially comb-like shape.

(c Wiring protection board) [Fig. 1, Fig. 3 to Fig. 6] Reference numeral 13 denotes two adjacent first electrodes of the base substrate 1.
This is a wiring protection board provided to cover the part between the connectors 3, 3.

The wiring protection board 13 is formed of a flexible synthetic resin, for example, a transparent synthetic resin such as hard vinyl chloride or polycarbonate, and has a substantially rectangular plate shape. Engagement pieces 14, 14 bent at a substantially right angle are formed on the two side edges 13a, 13a extending along the width direction, and the edges are formed on the two side edges 13b, 13b extending along the width direction. Notches 15, 15 are formed that are substantially arcuate and extend with a relatively large curvature.

The length in the longitudinal direction of the wiring protection plates 13, 13, 13 is approximately equal to or slightly shorter than the length in the longitudinal direction of the main portions 3a, 3a, . . . of the first connectors 3, 3, . Further, its length in the width direction is approximately twice the distance between two adjacent first connectors 3, 3.

(d. Attaching the wiring protection board to the base board) [1st
, FIG. 3, FIG. 5, FIG. 6] And the wiring protection board 13 formed in this way
is provided on the base substrate 1 as follows.

That is, the wiring protection board 13 is attached to the base board 1 as can be clearly understood by looking at FIG.
3 has a substantially dome shape when viewed from the longitudinal direction thereof, and the two engaging pieces 14 are curved so as to protrude outward from each other, and the two adjacent first This is done by positioning the engaging pieces 14, 14 in the gaps 7, 7 between the two first connectors 3, 3 and the base board 1 while positioning the connectors 3, 3 between the connectors 3, 3.

Therefore, one side edge 13a, 1 of the wiring protection board 13
3a elastically contacts the lower ends of the opposing surfaces of the two first connectors 3, 3, and the engaging pieces 14, 14 engage with the lower surfaces of the two first connectors 3, 3. It will be combined.

As a result, the wiring protection board 13 is prevented from engaging the two engaging pieces 14, 14 with the lower surfaces of the first connectors 3, 3 and pulling it out toward the side opposite to the base board 1. Unless this is done, the state attached to the base board 1 will be maintained, and the other side edges 13b will come into contact with the connector holder 2, thereby preventing its movement in the longitudinal direction. .

Therefore, the portion of the base board 1 between the two adjacent first connectors 3, 3 is connected to the wiring protection board 13.
Therefore, the second connectors 8, 8, ... and wiring cords 9, 9, ... located in the above part are covered by the base board 1, the two first connectors 3, 3, and the wiring protection board. Therefore, the portion of the wiring cords 9, 9, ... located between at least two first connectors 3, 3 is located in a space surrounded by the first connectors 3, 3
There is no such thing as climbing on top.

In addition, since the wiring protection board 13 is provided on the base board 1 in a curved state so as to form a substantially dome shape, stress that tends to spread laterally is applied to the curved part in a substantially circular arc shape. However, since the notches 15, 15 are located at both ends of this arcuate curved portion, the above stress can be suppressed to a small level, and therefore, the stress between the two adjacent first Even if the distance between the connectors 3 and 3 is quite narrow, the dome-shaped upper end expands outward more than the other parts, i.e., the two first
The connectors 3, 3 are not positioned above the connectors 3, 3.

Furthermore, in this embodiment, the interval between the two adjacent first connectors 3, 3 was kept approximately constant;
Even if this interval is not constant, the wiring protection board 13, 1
3,... can be attached to the base substrate 1 by the same attachment manner as described above without changing its size. That is, when the distance between the two first connectors 3, 3 is wider than the distance shown in the drawing, the height of the dome shape of the wiring protection board 13 is low;
In addition, if the curvature of the arcuate curved portion becomes smaller and the above-mentioned interval is narrower than the interval shown in the drawing, the height of the dome shape of the wiring protection board 13 is high and the arcuate curved part becomes smaller. The only difference is that the curvature of the affected area increases.

Therefore, even if the spacing between the two first connectors 3, 3 is considerably different, wiring protection boards of the same size can be used.

Further, since the wiring protection plate 13 is made of transparent synthetic resin, the portion covered by the wiring protection plate can be seen without looking into the side.

(Attachment of e-card board to connector) [Fig. 1,
5, 6] Furthermore, the card boards 11, 11, . . . are connected to terminal pins of the first connectors 3, 3, . 12, 12, . . . are inserted into the terminal holes 5, 5, . . . of the first connector 3.

In this case, since the side surfaces of the wiring protection plates 13, 13 are located close to the sides of the first connectors 3, 3, . . . , the card boards 11, 11, .
The side surfaces of the wiring protection plates 13, 13 can be used as guide members when the connectors 3, 3, . . .

Note that when the card boards 11, 11, ... are attached to the first connectors 3, 3, ..., the first connectors 3,
3. A certain amount of pressing force will be applied to..., but since this pressing force will be applied to the base board 1 via the connector holder 2, the pressing force will be distributed over a fairly wide area. .
In addition, the connector holders 2, 2 of the base board 1,
For example, if the corresponding parts are supported from below on the board rack or chassis part, even if a pressing force is applied to the connector holders 2, 2, etc., excessive pressure will be applied to the base board 1. The burden can be avoided.

(G Effect of the invention) As is clear from the above description, the wiring protection board for a circuit board of the present invention is formed of a flexible synthetic resin into a substantially plate-like shape, and has two parts provided on the circuit board. The connector is curved so as to cover the portion of the circuit board between the two connectors, and its both ends are in elastic contact with the side surfaces of the two connectors.

That is, according to the present invention, since the wiring protection board can be provided without being directly fixed to the circuit board, there is no need to prepare a space for fixing the wiring protection board to the circuit board, and therefore, the circuit board This means that there is no need to limit the layout of the printed wiring circuit.

In addition, the installation to the circuit board can be completed by simply bending the wiring protection board and bringing both ends of the board into elastic contact with the opposing surfaces of the two connectors. This can be done without using any special attachment means.

Even if the distance between two adjacent connectors is not constant, if the size of the curvature is made to correspond to the size of the distance, it can be provided regardless of the size of the distance between the two connectors. So,
In addition to reducing the number of different sizes, by selecting the size of this wiring protection board, two parts of the circuit board can be used.
Since most of the area between the two connectors can be covered with one type of wiring protection board, the number of types of wiring protection boards to be prepared can be reduced.

In the above-mentioned embodiment, the present invention is applied to a circuit board wiring protection board disposed between the connectors of a circuit board provided with a plurality of connectors to which card boards are attached, and is The mounting was carried out after installing a wiring protection board between these connectors, and by doing so, when the card board was mounted on the connectors, the card board was positioned close to these connectors from the side. The wiring protection board can be used as a guide member for its installation.

In addition, in the embodiment described above, two of the four side edges of the wiring protection board are curved in a substantially arc shape when provided on the circuit board, and the notch edge thereof extends in a substantially arc shape. formed a section, but
By doing this, when the wiring protection board is curved, the stress that tends to spread laterally and is generated in the approximately arc-shaped portion can be suppressed to a small extent, thereby protecting the wiring. Even when the plate is bent into a shape in which the curvature of the arcuate portion is larger, the arcuate portion is prevented from protruding laterally than other portions. be able to.

Furthermore, in the above-mentioned embodiments, the wiring protection board of the present invention was made of transparent synthetic resin, but by doing so, the wiring protection board of the circuit board can be easily seen from the side. You can see the covered parts.

The present invention is not limited to the wiring protection board having the purpose of use as shown in the above embodiment, but is applicable to a portion between two adjacent connectors of a circuit board provided with a plurality of connectors having some function. It can be applied to wiring protection boards for circuit boards that have various protection purposes, such as protecting wiring cords, circuit components, etc. located in the circuit board.

[Brief explanation of the drawing]

1 to 6 show an example of the implementation of the wiring protection board for a circuit board according to the present invention. The figure is a plan view of the base board before the wiring protection board and card board are installed.
Figure 3 is a plan view of the base board with a wiring protection board installed, Figure 4 is a perspective view of the wiring protection board, and Figure 5 is a perspective view of the wiring protection board.
The figure is a partially enlarged and partially exploded perspective view of the base board with the wiring protection board and card board installed, and Figure 6 is an enlarged sectional view taken along the - line in Figure 1. , FIG. 7 is a perspective view of essential parts showing an example of a board structure having a card board and a base board. Explanation of symbols: 1...Circuit board, 3...Connector, 13...Wiring protection board for circuit board.

Claims (1)

[Claims for Utility Model Registration] A device formed of flexible synthetic resin into a substantially plate shape and curved between two connectors provided on a circuit board so as to cover the portion of the circuit board between them. A wiring protection board for a circuit board, characterized in that both ends thereof are provided in elastic contact with the side surfaces of the two connectors.