JPH0227600Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a component mounting error detection device in an automatic electronic component mounting machine that mounts electronic components onto a printed circuit board (PC board), for example.

[Technical background of the invention]

In general, automatic electronic component mounting machines mount required electronic components such as integrated circuits (ICs), resistors, capacitors, transistors, etc. onto printed circuit boards of TVs, video cameras, personal computers, etc., and then transfer these components in the next process. It is designed to be fixed by soldering.

As described above, the electronic component automatic mounting machine is designed to insert each electronic component onto the printed circuit board, but when inserting the electronic components, for some reason, mistakes may be made when inserting the electronic components onto the printed circuit board. Sometimes it occurs.

Therefore, conventionally, these insertion errors are manually inspected or one by one is inspected using a mounted board inspection machine (in-circuit inspection machine).

[Problems with background technology]

However, the above-mentioned inspection means are not only troublesome, but also consume time and increase the number of inspection processes, and from the standpoint of saving labor through mass production,
There are drawbacks such as an increase in the number of steps, problems, and high costs.

[Purpose of invention]

The present invention was developed in view of the above-mentioned circumstances, and it detects each electronic component inserted into a printed circuit board using a continuity test circuit using a contact, detects insertion errors in electronic components, and enables mass production. In order to save labor,
In addition, the present invention provides a component mounting error inspection device for the purpose of improving reliability.

[Summary of the idea]

In the present invention, a conductive guide tube is inserted into a pinhole drilled in a substrate, a pair of stoppers is formed at an interval in the opening of the guide tube, and a pair of stoppers is formed at a distance between the two stoppers. A contactor biased by a coil spring is fitted into the opening located in the opening so that it can slide freely and not come out, and an insulating cylinder is inserted in the middle of the guide cylinder. A central conductor is fitted into the cylinder so that it can come into contact with the contact, and the contact is brought into contact with each electronic component on the printed circuit board to form a conductive circuit for inspection.

[Example of idea]

Hereinafter, the present invention will be described with reference to an illustrated embodiment.

In FIGS. 1 to 3, reference numeral 1 denotes a flat substrate, in which a plurality of pinholes 1a are bored, and lead wires 2 are provided in the pinholes 1a. A conductive guide cylinder 3 is firmly inserted. Further, a pair of stoppers 4 and 5 are formed in the opening 3a of the guide cylinder 3 with a gap between them by drawing process, and the above-mentioned stoppers 4 and 5 located between the two stoppers 4 and 5 are formed by drawing. A contact 7 having a contact portion 7a urged outwardly by the elasticity of the coil spring 6 is slid into the opening 3a, and is prevented from slipping out by the stopper 5. It is fitted.

On the other hand, an insulating cylinder 8 is located in the middle of the guide cylinder 3.
is inserted, and the upper part of this insulating cylinder 8 is locked by a stopper 9 formed on the guide cylinder 3 so as not to come off. Further, a bracket 11 for a center conductor 10 formed of, for example, stranded copper wire is provided on the upper part of the insulating cylinder 8, and a bracket 11 is provided between the lower end 10a of the center conductor 10 and the bracket 11. includes an extensible coil spring 12
urges the center conductor 10 downward so that it can come into elastic contact with the upper end 7b of the contactor 7. Furthermore, the upper end portion 1 of the center conductor 10
A lead wire 13 is connected to 0b via a joint 14, and this lead wire 13 and the lead wire 2
is connected to the power source 15, as shown in FIGS. 2 and 3.

Therefore, when inspecting a printed circuit board with electronic components a and b inserted therein for incorrect insertion of the electronic components a and b, it is necessary to check if the electronic component a is inserted onto the printed circuit board. If not, as shown in the electrical circuit of Figure 2,
The contact portion 7a of the contactor 7 is connected to the electronic component a.
Since it is not inserted, it remains hanging down due to the elasticity of the coil spring 6.

Next, when the electronic component b is inserted onto the printed circuit board, the contact portion 7a of the contactor 7 comes into contact with the electronic component b, as shown in the electric circuit of FIG. , is pushed up against the elasticity of the coil spring 6, so the upper part 7b of the contact 7 comes into contact with the lower part 10a of the central conductor 10, forming a conductive circuit to the power supply 15 through the lead wires 2 and 13. However, it is now possible to confirm that there are no insertion errors using, for example, an alarm device or a warning lamp.

Incidentally, it goes without saying that the contact portion 7a of the contactor 7 does not necessarily have to be made of a conductor.

[Effect of idea]

As described above, according to the present invention, the pinhole 1a is formed in the substrate 1, the conductive guide cylinder 3 is inserted into the pinhole 1a, and the guide cylinder 3 is inserted into the pinhole 1a.
A pair of stoppers 4 and 5 are formed at an interval in the opening 3a, and a contact 7 biased by a coil spring 6 is inserted into the opening 3a located between the stoppers 4 and 5. The insulating cylinder 8 is inserted in the middle of the guide cylinder 3 so that it can slide freely and not come off, and the center conductor 10 is brought into contact with the contact 7 in the insulating cylinder 8. Since the parts are fitted in such a way that they can be easily inspected, they are not only easy to inspect for parts installation errors, but also easy to handle and operate.Furthermore, the structure is simple, and assembly and adjustment are easy, which saves labor through mass production. can be achieved.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a component mounting error detection device according to the present invention, and FIGS. 2 and 3 are electrical circuit diagrams for explaining the operation of the present invention. DESCRIPTION OF SYMBOLS 1... Board, 2... Lead wire, 3... Guide cylinder, 4, 5... Stopper, 6... Coil spring, 7
...Contact, 8...Insulating cylinder, 9...Stopper,
10... Center conductor, 11... Bracket, 13...
…Lead.

Claims (1)

[Scope of utility model registration request] A pinhole is made in the board, a conductive guide cylinder is inserted into the pinhole, a pair of stoppers is formed at the opening of the guide cylinder with a gap between them, and a conductive guide cylinder is inserted into the pinhole. A contactor biased by a coil spring is fitted into the opening located in the opening so that it can slide freely and not come out, and an insulating cylinder is inserted in the middle of the guide cylinder, and the insulating cylinder is inserted into the opening. A component mounting error detection device characterized in that a center conductor is fitted into a cylindrical body so as to be able to come into contact with the contactor.