JPH0127105Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a keyboard wiring check device.
In particular, the present invention relates to a keyboard wiring check device (hereinafter referred to as "this product") used when wiring a plurality of lead wires between each connection terminal and a connector in a keyboard.

In recent years, electrical devices using keyboards have been used for a wide variety of purposes.

Wiring around the keyboard in such electrical equipment involves soldering each connection terminal on the keyboard and each contact on the connector using lead wires, and then inserting the connector into a separate connector provided in another electrical circuit. This is done by wearing the clothes.

Conventionally, color-coded lead wires and the like have been used for wiring between the keyboard and the connector in order to prevent incorrect wiring.

However, although the wiring between the keyboard and the connector generally requires a large number of wires, there is a limit to the color coding of the lead wires, so lead wires of the same or similar colors are used in the wiring. There are many.

Therefore, in the conventional wiring work between the keyboard and the connector, incorrect wiring sometimes occurs.

In addition, since the contacts of a connector are generally close together, it is easy to cause solder bridging between two contacts during wiring work, but since the wiring is densely packed in the contact area, it is difficult for workers to avoid solder bridging points. Easy to miss.

Furthermore, if the above-mentioned wiring errors or solder bridges are discovered through an electrical test after the wiring work is completed, it is extremely difficult to correct those parts.

This invention was made in view of the above circumstances,
It is an object of the present invention to provide a keyboard wiring check device that allows a worker to easily find incorrect wiring between a keyboard and a connector or a solder bridge in a contact part of a connector during wiring work, and thereby immediately correct the problem. .

An embodiment of the present product will be described below with reference to the drawings.

FIG. 1 is an explanatory diagram showing the state of use of an embodiment of the present product.

In FIG. 1, a keyboard 1 has a plurality of key switches 2 on its front side, and a plurality of connection terminals (not shown) corresponding to the key switches 2 on its back side. Reference numeral 4 denotes a connector (female connector in this embodiment) having a plurality of contacts on which wiring work is to be performed, and lead wires 3 are used to connect the plurality of contacts and the plurality of connection terminals of the keyboard 1. Wiring work will be done for each.

Reference numeral 10 denotes a wiring stand, and the wiring stand 10 is made of, for example, a metal plate bent at an acute angle, and is fixed to the work desk 5 by an appropriate method.
A receiving connector 12 (a male connector in this embodiment) has a plurality of contacts fastened to an inclined surface of the receiving connector 12, and a lead wire at one end is soldered to the contacts of the receiving connector 12, and a lead wire at the other end is soldered to the contact of the receiving connector 12. It consists of a cable 13 to which a separate checker connector 14 is connected.

20 is a wiring checker, and the wiring checker 20 is
A plurality of lamps 21 are provided on the front surface of the receiving connector 12 so that a predetermined lamp lights up when a conductive state is established between the predetermined contacts of the receiving connector 12, and a checker connector 22, a power switch 23, etc. are provided as appropriate. It is arranged. Further, the checker connector 22 is inserted into the checker connector 14 of the cable 13. In addition,
The keyboard 1, the fixed base 11, and the wiring checker 20 are arranged on the upper surface of the work desk 5.

One embodiment of the keyboard wiring checking device of the present invention is comprised of the wiring stand 10 and the wiring checker 20 as described above.

Next, we will explain how to operate this product.

First, connect the connector 4 to be wired to the wiring board 1.
0 into the receiving connector 12. Then, the other ends of the two lead wires 3, one end of which has already been soldered to two predetermined connection terminals of the keyboard 1, are respectively soldered to two predetermined contacts of the connector 4 to be wired. After that, the operator presses on the key switch 2 corresponding to the connection terminal of the keyboard 1. As a result, the predetermined contacts of the receiving connector 12 become electrically conductive, and as a result, the electric circuit of the wiring checker 20 operates as described later, and one of the lamps 21 lights up.
The operator checks whether the lit lamp 21 corresponds to the key switch 2 that was pushed on, and if the lit lamp 21 corresponds to the key switch 2, the wiring has been completed without error. On the other hand, if a lamp other than the lamp corresponding to the key switch that was pushed on turns on, the wiring is incorrect, and if other lamps also light up along with the lamp that corresponds to the key switch that was pushed on, then the It can be seen that solder bridging occurs between the contacts of the connector 4. If there is any wiring error, the operator should immediately correct it.
Make the wiring correct.

The above operations are performed for each lead wire 3.

Next, the electric circuit of the wiring checker 20 will be explained.

Figure 2 shows that when the product is in use, the lead wire 3 is connected between the connector 4 and each predetermined terminal of the keyboard 1.
A schematic electrical circuit diagram when wiring is shown.

In Figure 2, the same symbols as in Figure 1 are:
It shows the same thing as FIG. 1, and to simplify the electrical circuit, only the electrical system of the two contacts of the connector 4 is shown, and the checker connector 1 is shown.
The insertion portions 4 and 22 are omitted.

In the figure, one contact of the receiving connector 12 is connected to the power supply (+) via a resistor 24, and the other contact is grounded via a lamp 21 made of, for example, a light emitting diode. . The two contacts of the connector 4 inserted into the two contacts of the receiving connector 12 are connected to respective connection terminals of the key switch 2 in the corresponding keyboard 1 by lead wires 3. There is.

In such an electric circuit, the key switch 2
By pushing on the key switch 2, a constant current determined by the resistor 24 flows, and the key switch 2
The lamp 21 corresponding to the corresponding one is lit. Furthermore, if there is an error in the wiring to the contacts of the connector 4, it is obvious that even if the key switch 2 is pressed on, the corresponding lamp 21 will not light up.

As is clear from the above description of the embodiment of the present product, according to the present product, the wiring is checked every time the lead wire connected to the connection terminal of the keyboard 1 is soldered to the contact of the connector 4. Therefore, it is possible to easily find locations such as incorrect wiring or solder bridges during wiring work, and they can be corrected immediately, making the correction work much easier than doing it after wiring is completed. . Therefore, since the wiring between the keyboard and the connector can be quickly and reliably performed, it is expected that the productivity of the wiring work will be improved, and that the reliability of electronic equipment using them will also be improved.

In addition, in the explanation of the embodiment, it was explained that the wiring check is to be performed every time each lead wire is soldered, but before soldering the lead wire, one end of the lead wire should be brought into contact with a predetermined contact of the connector 4. By checking the wiring before soldering and checking the wiring again after soldering, it is possible to almost completely eliminate incorrect wiring of the lead wires.

Furthermore, in the embodiment of this product, the wiring board 10
has been described as being provided separately from the wiring checker 20, but they may be formed integrally. That is, in this case, the checker connector 22 disposed on the front surface of the wiring checker 20 is made to protrude from the front surface of the wiring checker 20, and is fixed to the checker connector 22 with an inclination by an appropriate means. Connector 4 to be wired by using this as a receiving connector
It is also possible to perform wiring by directly inserting the connector into the checker connector 22. Furthermore, in the device of the present invention, since the receiving connector or checker connector is fixed at an angle, it is easy to connect the connector, and it is extremely easy to discover and correct wiring errors during wiring work. It is possible to improve the efficiency of the entire work.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing the usage state of one embodiment of the present product, and Fig. 2 shows the use state of the present product, in which lead wires 3 are wired between the female connector 4 and each predetermined terminal of the keyboard 1. A schematic electrical circuit diagram is shown. 1...Keyboard, 4...Connector, 10...
Fixing base, 12... Receptacle connector, 20... Wiring checker, 21... Lamp.

Claims (1)

[Scope of utility model registration request] A keyboard wiring check device is used to wire multiple lead wires between each connection terminal of a key switch and each contact of a connector in a keyboard, and the device consists of a wiring stand fixed to the top surface of a work desk and a wiring checker. The wiring board is provided with a plurality of receiving connectors into which the connectors fastened to the inclined surface of the fixed stand bent at an acute angle are inserted, and the wiring checker is equipped with a checker connector and a plurality of receiving connectors. a lamp, a means for lighting a predetermined lamp among the plurality of lamps when conduction is established between predetermined contacts of the receiving connector, and a cable connecting the receiving connector and the checker connector. A keyboard wiring check device comprising: