JPH08236875A - Electric circuit board - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to provide an electric circuit board on which a cable can be hooked or removed without using a binding band or the like. [Structure] Notch 6 that opens at the edge of electric circuit board 1
By including the first through hole portion 5 communicating with the cutout portion 6, the cable 2 is easily inserted into the substrate 1 along the open cutout portion 6, and a binding band, a wire or the like is attached. The electric circuit board 1 is engaged with the outer edge corner portion 8 and the first through hole portion 5 corner portion 7 without using. Further, the cable 2 can be easily removed from the substrate 1 by guiding it along the outer edge of the first through hole portion 5. [Effect] The cable can be easily inserted into, locked on and removed from the substrate without using a binding band, a wire, or the like. Therefore, it is possible to provide an electric circuit board with a small number of assembling steps and a small number of repair steps.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric circuit board used for electric equipment and the like, and more particularly to an electric circuit board to which a cable is connected.

[0002]

2. Description of the Related Art In recent years, with the miniaturization of electric equipment and the like, a printed wiring land pattern (hereinafter, simply referred to as a pattern) of an electric circuit board (hereinafter, simply referred to as a board) used in the electric equipment is used.
The high density and the miniaturization of mounted parts have been achieved, and even for cables that connect the same board or between other boards and exchange power, signals, etc., thin cables and flexible cables with a narrow pattern pitch, etc. Is often used.

Even when a tensile force acts on a cable or the like, the tensile force does not extend to the connecting portion between the substrate and the cable or the like, and the connecting portion between the substrate and the cable does not come off or deform and the substrate pattern does not peel off. As described above, the cables and the like are hooked on the substrate by means of binding bands, wires, etc. attached to the substrate. In particular, when a thinned cable or a flexible cable having a narrow pattern pitch is connected to the high-density substrate pattern as described above, it is important to hook the cable or the like on the substrate.

A connector is usually used as a connecting means for connecting a cable or the like to a substrate, and a conventional technique using the connector will be described with reference to FIGS. 8 and 9.

Prior Art Example 1 In FIG. 8, a cable 2 is hooked on a substrate 1 by using a binding band 11. The cable 2 having the female connector 3 is inserted into the male connector 4 mounted on the substrate 1 by soldering, and the hole 1 of the substrate 1 near the male connector 4 is inserted.
It is hooked on the substrate 1 by a binding band 11 which is passed through 2. As a result, even if a pulling force acts on the cable 2, the pulling force is received by the binding band 11 attached to the substrate 1 and does not reach the female connector 3 and the male connector 4. Therefore, the female connector 3 and the male connector 4 are not detached or deformed and the pattern of the substrate 1 is not peeled off.

However, in the above structure, the binding band 1 is used.
Since the cable 1 is passed through the hole 12 and the cable 2 is hooked on the board 1, the number of steps for assembling the board 1 and the cable 2 is increased.

Further, the cable 2 for repairing the substrate 1 is connected to the substrate 1
When it becomes necessary to remove the cable from the cable, the cable tie 11 or the like must be unwound or cut, which increases the number of man-hours for repairs, etc., or prepare a new cable tie or the like to hook the cable to the board. I had to do it.

Prior Art Example 2 FIG. 9 shows a cable 2 with a wire 13 soldered to a substrate 1.
It is to be wrapped around and hooked. The wire 13 is soldered and fixed to the board 1 near the male connector 4, and is wound around the cable 2 and hooked on the board 1. As a result, as in the case of the conventional technology example 1 described above, even when a pulling force acts on the cable 2, the pulling force is received by the wire 13 attached to the substrate 1 and reaches the female connector 3 and the male connector 4. Absent. Therefore, the female connector 3 and the male connector 4 are not detached or deformed and the pattern of the substrate 1 is not peeled off.

However, in the above structure, the wire 13 is wound around the cable 2 to be hooked, and there is a drawback that the number of steps for assembling the substrate 1 and the cable 2 increases.

In addition, when it is necessary to remove the cable 2 from the substrate 1 for repair or the like, the wire 13 must be unwound and the cable 2 must be removed, and the wire 13 is rewound around the cable 2 when reassembled. Must be,
There was a drawback that the number of man-hours required for repairs increased. Then, if the above-mentioned repair or the like is repeated, the wire 13 may be cut due to fatigue or the like due to repetition, or the pattern of the substrate 1 to which the wire 13 is fixed may be peeled from the substrate, and the cable cannot be hooked on the substrate. There was also.

[0011]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a substrate on which a cable can be easily hooked or removed.

[0012]

In order to solve the above-mentioned problems, the invention of claim 1 comprises a notch portion which opens to the outer edge portion of the substrate, and a first through hole portion which communicates with the notch portion. Thus, the cable is hooked on the substrate.

According to a second aspect of the present invention, the cutout portion opening to the outer edge portion of the substrate is communicated with the cutout portion, and the diameter of the first through hole portion is larger than the width of the cutout portion. By providing the hole portion, the cable housed in the first through hole portion is not easily pulled out, and the cable is hooked on the substrate. Here, the diameter of the first through hole portion, if the shape of the first through hole portion is substantially quadrangle, the distance between the facing sides is large,
If it is a polygon, the distance between opposite sides is the largest, and if it is almost circular, it is the one with the largest diameter.

According to the third aspect of the present invention, even if the shape of the notch opening to the outer edge of the substrate or the shape of the first through hole is lost due to an accident or the like, the binding is performed adjacent to the first through hole. A second through hole for passing a band or the like is provided on the substrate so that the cable can be hooked on the substrate again with a binding band or the like.

According to the invention of claim 4, the second through hole portion according to claim 3 is formed even when the shape of the notch opening to the outer edge portion of the substrate or the shape of the first through hole portion is destroyed due to an accident or the like. A soldering pattern is provided on the periphery of the wire, and the wire fixed to the pattern by solder is wrapped around the cable so that the wire can be hooked again on the board.

[0016]

According to the invention of claim 1, the cable can be easily hooked and removed from the substrate without using a binding band, a wire or the like, and the work efficiency of assembly or the efficiency of maintenance such as repair is excellent. A structural substrate can be provided.

According to the second aspect of the invention, the cable can be easily hooked on the substrate without using a binding band, a wire or the like, and the cable housed in the first through hole portion is not easily pulled out. A structural substrate can be provided.

According to the third aspect of the invention, even if the notch or the shape of the first through hole that opens to the outer edge of the substrate is destroyed due to an accident or the like, the cable can be hooked again with a binding band or the like. It is possible to provide a substrate having a structure with excellent efficiency during maintenance such as repair.

According to the fourth aspect of the invention, even if the shape of the notch opening at the outer edge of the substrate or the shape of the first through hole is destroyed due to an accident or the like, the cable can be hooked again with a wire or the like. It is possible to provide a substrate having a structure with excellent efficiency during maintenance such as repair.

[0020]

Embodiments of the present invention will be described below with reference to the drawings. The cable has a small number of electric conductors, and there is only one cable, but it is generally composed of a plurality of electric conductors, and in recent years, flexible cables and the like have been widely used. The cable is connected to the inside of the same board or between other boards by making the terminal into a harness shape with a connector or the like, or by making the terminal directly solderable. It is offered for giving and receiving. Here, a connector is used as a connecting means between the substrate and the cable, as in the conventional technique. Further, the constituent elements in the figure that have the same structure as the conventional technique are designated by the same reference numerals.

Embodiment 1 Claim 1 will be described below with reference to FIG. FIG.
1A is a schematic plan view of a main part of a substrate, and FIG. 1B is a schematic side view. Notch 6 that opens to the outer edge of the substrate 1
And a substantially rectangular first through hole portion 5 communicating with the cutout portion 6.
Is provided. The cable 2 having the female connector 3 is inserted into the male connector 4 mounted on the substrate 1 by soldering, and the cable 2 is bent at the outer edge portion 8 of the substrate 1 and guided from the mounting surface 9 to the pattern surface 10. Then, the cable 2 inserted from the opening notch 6
Is bent again through the first through hole portion 5 and returned to the mounting surface 9. The other end of the cable 2 is the same board 1
Internally or connected to another substrate (not shown).

A notch 6 opening to the outer edge of the substrate 1;
By providing the substantially rectangular first through hole portion 5 communicating with the cutout portion 6, the cable 2 can be inserted more easily than the open cutout portion 6 when the substrate 1 and the cable 2 are assembled.

Further, even when a force such as pulling acts on the cable 2, the cable 2 can be hooked at the corner portion 7 of the first through hole portion 5 and the corner portion 8 of the outer edge of the substrate 1. Therefore,
Since no force such as pulling is applied to the female connector 3 or the male connector 4, the female connector 3 and the male connector 4 are not detached or deformed and the circuit pattern of the substrate 1 is not peeled off.

Further, at the time of repairing the substrate 1, the cable 2 is guided along the notch 6 opened from the first through hole 5 without unraveling or cutting the binding band. , Can be easily removed from the substrate 1.

The position provided on the substrate 1 which is provided with the notched portion 6 which opens and the first through hole portion 5 which communicates with the notched portion 6 is pulled by a connector which is a connecting portion between the substrate and the cable. In order to prevent the force from being applied, the vicinity of the connecting portion between the substrate 1 and the cable 2 is desirable, but the present invention is not limited to this.

Embodiment 2 Claim 2 will be described below with reference to FIG. Figure 2
FIG. 2A is a schematic plan view of a main part of the substrate, and FIG. 2B is a schematic side view. Notch 6 that opens to the outer edge of the substrate 1
The more inserted cable 2 has a corner portion 7 of the first through hole portion 5.
And, it is accommodated in the first through hole portion 5 by being hooked at the corner portion 8 of the outer edge of the substrate 1 but having a diameter D of the first through hole portion 5 larger than the width of the cutout portion 6 that opens. The separated cable 2 does not come off easily from the substrate 1.

When the board is repaired, the cable 2 is guided along the notch 6 opened from the outer edge of the first through hole 5 without uncoupling or cutting the binding band. As a result, it can be easily removed from the substrate 1.

In the present embodiment, the shape of the first through hole portion 5 is a substantially quadrangular shape as shown in FIG. 1, but the shape is not limited to this. For example, a substantially circular shape as shown in FIG. It may be a substantially triangular shape as shown in FIG. In addition, the notch 6 that opens and the first through hole 5 are not limited to a pair. As an example, as shown in FIG. 7A which is a schematic plan view and a schematic CC cross-sectional view of the main part of the substrate of FIG. 7B, an opening notch portion 6 and a first through hole portion 5 are provided. Two pairs may be provided, and the shape of the through hole may be substantially circular as shown in FIG. 5 or substantially triangular as shown in FIG.

The position where the notch 6 that opens and the first through hole 5 that communicates with the notch 6 are provided on the substrate 1 are as follows.
Since it is the same as the first embodiment, the description thereof is omitted.

Embodiment 3 Claim 3 will be described below with reference to FIG. FIG.
FIG. 3A is a schematic plan view of a main part of the substrate, and FIG. 3B is a schematic AA cross-sectional view. A two-dot chain line portion in FIG. 3 indicates a portion where the cutout portion 6 and the first through hole portion 5 provided in the substrate 1 are destroyed due to an accident or the like. However, even in such a state, by providing at least one second through hole portion 12 on the substrate 1 in the vicinity of the first through hole portion 5, the cable 2 can be bound with the binding band 11 or the like. , The substrate 1 can be hooked again.

Embodiment 4 Claim 4 will be described below with reference to FIG. FIG.
FIG. 4A is a schematic plan view of a main part of the substrate, and FIG. 4B is a schematic BB cross-sectional view. A two-dot chain line portion in FIG. 4 indicates a portion where the open notch portion 6 and the first through hole portion 5 provided in the substrate 1 are destroyed due to an accident or the like. However, even in such a state, by providing the solderable pattern 14 on the peripheral portion of the at least one second through hole portion 12 described in the third embodiment, the cable 2 can be connected to the board 1.
The wire 13 fixed to the substrate 1 by soldering can be hooked on the substrate 1 again.

[0032]

As described above in detail, according to the invention of claim 1, the cable is easily inserted from the notch opening at the outer edge of the substrate without using a binding band, wire, or the like. Since it can be hooked at the corner of the first through hole communicating with the cutout, the number of steps for assembling the cable and the board does not take much.

Further, even when a force such as a pulling force acts on the cable hooked at the corner of the first through hole communicating with the corner of the outer edge of the substrate and the notch that opens, the cable and the substrate are Since no force such as pulling is applied to the connection portion, the connection portion between the cable and the substrate is not detached or deformed and the pattern of the substrate is not peeled off. This is particularly effective when the high-density substrate pattern and the cable are connected.

Further, when the board is repaired or the like, if the cable is guided along the first through hole without unwinding or cutting the binding band or the like, a notch opening to the outer edge of the board is formed. It can be removed from the board and easily removed from the board. Therefore, it is possible to provide a substrate that is easy to repair and does not require many steps.

According to the second aspect of the present invention, the cable is easily inserted from the notch opening to the outer edge of the substrate without using a binding band or wire, and the notch opening to the corner of the outer edge of the substrate. Since it is hooked at the corner of the first through hole communicating with the section, the number of steps for assembling the cable and the board does not take much. Furthermore, by making the diameter of the first through hole larger than the width of the notch opening in the outer edge of the substrate,
It does not come off easily from the substrate 1.

Further, even when a force such as pulling acts on the cable hooked at the corner of the first through hole communicating with the corner of the outer edge of the substrate and the notch opening to the opening, the cable and the substrate are Since no force such as pulling is applied to the connecting portion, the connecting portion between the cable and the substrate will not be detached or deformed, and the pattern of the substrate will not be peeled off. This is particularly effective when the high-density substrate pattern and the cable are connected.

Furthermore, when the board is repaired, the cable is opened to the board outer edge by guiding the cable along the outer edge of the first through hole without uncoupling the binding band or cutting the cable. It can be easily removed from the notch.
Therefore, it is possible to provide a substrate that is easy to repair and does not require many steps.

According to the invention of claim 3, due to an accident or the like,
Even in the state where the cutout portion opening to the outer edge portion of the substrate and the shape of the first through hole portion are destroyed, the cable can be hooked on the substrate again by using a binding band or the like.

According to the invention of claim 4, due to an accident or the like,
Even in the state where the groove opening to the outer edge of the substrate and the shape of the first through hole are destroyed, the cable can be hooked on the substrate again by using wire or the like.

[Brief description of drawings]

1A and 1B show a main part of an electric circuit board according to a first embodiment of the present invention, in which FIG. 1A is a schematic plan view and FIG.
FIG. 4 is a schematic side view.

2A and 2B show a main part of an electric circuit board according to a second embodiment of the present invention, in which FIG. 2A is a schematic plan view and FIG.
FIG. 4 is a schematic side view.

3A and 3B show a main part of an electric circuit board according to a third embodiment of the present invention, in which FIG. 3A is a schematic plan view and FIG.
[Fig. 3] is a schematic A-A sectional view.

4A and 4B show a main part of an electric circuit board according to a fourth embodiment of the present invention, in which FIG. 4A is a schematic plan view and FIG.
[Fig. 3] is a schematic BB sectional view.

FIG. 5 is a schematic plan view of an electric circuit board in which the first through-hole portion has a substantially circular shape in an application example of the second embodiment to which the present invention is applied.

FIG. 6 is a schematic plan view of an electric circuit board in which the first through-hole portion has a substantially triangular shape in an application example of the second embodiment to which the present invention is applied.

FIG. 7 is a schematic plan view of an electric circuit board having two pairs of open groove portions and first through hole portions in an application example of the second embodiment to which the present invention is applied.

8A and 8B show a main part of an electric circuit board according to a conventional technology example 1, where FIG. 8A is a schematic plan view and FIG. 8B is a schematic side view.

9A and 9B show a main part of an electric circuit board according to a second conventional technology example, FIG. 9A is a schematic plan view, and FIG. 9B is a schematic side view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 board 2 cable 3 female connector 4 male connector 5 first through hole portion 6 notch opening to the outer edge portion 7 corner portion of the first through hole portion 8 outer edge portion of the substrate 9 board mounting surface 10 board pattern Surface 11 Binding band 12 Second through hole portion 13 Wire 14 Solderable pattern D Diameter of first through hole portion

Claims (4)

[Claims] 1. An electric circuit board to which a cable is connected, comprising: a cutout portion that opens to an outer edge portion of the electric circuit board; and a through hole portion that communicates with the cutout portion. substrate. 2. The electric circuit board according to claim 1, wherein a diameter of the through hole portion is wider than a width of the cutout portion. 3. The electric circuit board according to claim 1, wherein a second through hole portion is provided adjacent to the through hole portion. 4. The electric circuit board according to claim 3, wherein a solderable pattern is formed on a peripheral portion of the second through hole portion.