JPH037906Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a cleaner for cleaning contacts of a printed circuit board connector.

(Prior art and its problems) Printed circuit board connectors have become popular with the development of labor-saving and high-density internal mounting methods for electronic devices using printed wiring boards, and card edge type connectors in particular are small and compact. Because it is economical,
It has been widely used as an electrical connection in various industrial electronic equipment or computers, especially recently as a connector for connecting a ROM cartridge containing a program to a home computer or game machine.

By the way, when using a connector, contact failures often occur due to an increase in contact resistance. Contact resistance consists of lumped resistance and boundary resistance, but especially when used for home use, people who do not have expertise in handling connectors often contaminate the contacts, resulting in an increase in boundary resistance. Many problems with poor contact occur. To prevent this, it is effective to clean the contacts, but conventionally, both the female connector and the male connector can be cleaned easily and efficiently, and a suitable cleaning method that can be used many times is used. A cleaner has not been realized.

For example, Japanese Utility Model Application Publication No. 57-17086 proposes a connector cleaning tool that cleans by inserting and removing a felt part fixed to the end of a flat plate into the connector. Since only the connector can be cleaned, the felt part becomes dirty after only a few uses at the most, making it impossible to use it any longer, which is extremely uneconomical.

(Technical Means for Solving the Problems) In view of the above-mentioned problems, the present invention was developed for cleaning male and female connectors with many contacts lined up in a row, such as card edge type connectors. The purpose of the present invention is to provide a cleaner that is easy to handle, can be used many times, and has a simple structure.

As a technical means for achieving the above object, the connector on a printed circuit board of the present invention has an endless cloth-like A body 3 is slidably and rotatably wrapped around at least one end edge 7 of the body, and the protrusion 2b
A structure is adopted in which a cloth-like auxiliary cleaning tool 8 is fixed to the auxiliary cleaning tool 8.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

In FIG. 1 and FIG. 2, the cleaner 1 is
A hygroscopic cloth-like body 3 is wrapped endlessly around the main body 2a so that it can slide and rotate around a thin plate-like substrate 2 consisting of a substantially square-shaped main body 2a and a protrusion 2b protruding from the main body 2a. . The substrate 2 is integrally formed of, for example, a metal plate, a plastic plate, a laminated plate, or the like. The upper edge portion 4 of the main body 2a is
Step portions 6, 6 are provided slightly inward from the upper edge portions 5 of the protrusions 2b, 2b. The above-mentioned cloth-like body 3 is stretched in a slightly tensioned state between the end edges 4 and 7, and the stepped portions 6, 6 prevent the cloth-like body 3 from moving laterally even when rotated and slid. It's designed to stay in place. The cloth-like body 3 is used to clean contact parts (contacts) of connectors, etc. by soaking it with an appropriate cleaning liquid and cleaning it. Consists of skin, etc. When the cloth-like body 3 is wrapped around the substrate 2, the thickness of the cleaner 1 is approximately the same as the thickness of a commonly used printed circuit board. The above-mentioned protrusions 2b, 2b are covered with bag-shaped auxiliary cleaning tools 8, 8 made of the same material as the cloth-like body 3 and fixed with an adhesive or the like.

As shown in FIG. 3, the cleaner 1 configured as described above impregnates the cleaning liquid 9 near the tip edge 3a of the cloth-like body 3, and then uses the knife that requires cleaning the tip edge 3a. Insert and remove from connector 10, or repeat insertion and removal several times. As a result, dirt on the contacts of the female connector 10 is wiped off and cleaning is performed. Tip edge 3 of cloth-like body 3
If the cloth-like body 3 becomes dirty, the cloth-like body 3 is rotated while sliding on the substrate 2, so that a new part of the cloth-like body 3 becomes the leading edge 3a. Thereby, almost the entire surface of the cloth-like body 3 can be used for cleaning, and the cleaner 1 can be used many times. Further, depending on the position of the cloth-like body 3, it may be determined that it is used for preliminary cleaning or for final cleaning, and the cloth-like body 3 may be rotated and used depending on the degree of dirt on the female connector. The auxiliary cleaning tool 8 is used to clean the card edge (i.e., male connector) by soaking the cleaning liquid 9 therein, and since it has a certain width, cleaning can be done quickly and reliably. be able to.

As described above, according to this cleaner 1, cleaning of the contacts of the female connector 10, which has been extremely difficult in the past, can be easily and reliably performed. Moreover, this cleaner 1 can clean the male and female connectors, which is very convenient, and the structure is simple and economical.

In the above-mentioned embodiment, the cloth-like body 3 was wound between the both end edges 4 and 7 of the main body 2a, but as shown in FIG. It may be wound between the groove 11 and the edge portion 7. The stepped portion 6 may be provided on the edge portion 7 side, or may be provided on the surface of the main body 2a.
The auxiliary cleaning tool 8 may be provided in other positions, or 1
It can be anywhere. Also, instead of the bag-shaped auxiliary cleaning tool 8, a suitable cloth-like auxiliary cleaning tool 8a as shown in FIG.
may be attached to one or both sides of the protrusion 2b.

(Effects of the invention) According to the cleaner of the invention, it is possible to easily and reliably clean both card edge type male and female connectors by using the cloth-like body wrapped around the main body of the board and the auxiliary cleaning tool fixed to the protrusion. can be done. Particularly in cleaning female connectors, by rotating the cloth-like body, the cloth-like body can be effectively used over its entire length, so that it can be used for multiple cleanings. Moreover, it has a simple structure and can be manufactured at low cost.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a front view of the cleaner, FIG. 2 is a cross-sectional view taken along the line - in FIG. 1, and FIG. 3 is a perspective view showing the cleaner in use.
FIG. 4 is a front view showing another embodiment of the cleaner. 1... Cleaner, 2... Board, 2a... Main body,
2b...Protrusion part, 3...Cloth-like body, 7...Edge part,
8, 8a...Auxiliary cleaning tool.

Claims (1)

[Scope of utility model registration request] An endless cloth-like body is slidably and rotatably wrapped around a thin plate-like substrate consisting of a substantially rectangular main body and a protrusion protruding from the main body, including at least one edge of the main body. and a cloth-like auxiliary cleaning tool is fixed to the protrusion.