JPS5855800Y2 - Fasteners for mounting printed circuit boards, etc. - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a fastener for attaching a plate-like object such as a printed circuit board to a fixed base.

2. Description of the Related Art As a fastener used to attach a printed circuit board to a fixing base, there is a conventional fastener as shown in FIG.

In the figure, 11 is a first fastener, 12 is a second fastener, 13 is a wood screw, 14 is a printed circuit board, and 15 is a fixing base.
is inserted into the mounting hole 14a of the printed circuit board 14, and the second fastener 12 is fitted to the tip portion 11a protruding from the mounting hole 14a, and the second fastener 12 is inserted through both fasteners 11° and 12 from the second fastener 12 side. A screw 13 is inserted therethrough and screwed onto a fixing base 15.

However, the above-mentioned fastener requires two types of fasteners, which has the drawback of increasing manufacturing cost.

It is an object of the present invention to provide an inexpensive mounting fastener that has only one fastener and can be installed accurately and easily, and also has a cylindrical structure.

Embodiments of the present invention will be described below with reference to FIGS. 2 and 3.

In the figure, 1 is a fastener, 2 is a printed circuit board, 3 is a wood screw, and 4 is a fixing base.

Usually, in the case of printed circuit boards, there are pattern surfaces, electronic components, etc. on the back side, so in order to maintain a predetermined distance between the fastener 1 and the fixing base 4, the fastener 1 is provided with a fastener main body 5 that serves as a spacer. An insertion portion 6 for insertion into the mounting hole 2a of the printed circuit board 2 is integrally molded at the tip of the main body of the fastener.

Reference numeral 7 denotes an insertion hole for a mounting screw provided from the tip of the insertion portion to the rear end of the fastener, and therefore the insertion portion 6 has a thin tubular shape.

8 is a slit provided radially from the tip of the insertion section 6, and 9 is a locking claw formed on the outer periphery of the tip of the insertion section 6, so that when the insertion section 6 is inserted into the printed circuit board, the fastener is printed. This locking pawl is designed to prevent it from falling off the board, and in the present invention, this locking pawl serves as a protrusion for pressing the printed circuit board as shown in FIG.

The above-mentioned fastener 1 is integrally molded of soft plastic or the like, and is made of a material such that the divided pieces 6a of the insertion portion divided by the slits 8 are easily bent.

In the above-described fastener, when the mounting screw 3 is inserted through the insertion hole 7 and screwed into the fixing base 4, the divided piece 6 is inserted.
a is pushed apart by the mounting screw, bent along the back surface 3a of the head of the mounting screw 3, and crushed as shown in FIG.

This crushed divided piece 6a functions as a washer for the mounting screw 3, and can elastically press and fix the printed circuit board 2 via the locking claw 9.

According to the fastener for mounting printed circuit boards, etc. of the present invention,
It is only necessary to remove the fastener from the main body of the fastener and the insertion part formed integrally with the main body, and there is no need for two types of fasteners as in the past, reducing costs and simplifying the installation process. .

In addition, a slit is formed from the tip of the insertion part, and the divided piece divided by the slit is pushed apart by the screwing of the mounting screw, and is crushed to act as a washer, and the divided piece is protruded from the outside. It is possible to elastically press the printed circuit board or the like with the locking pawl to properly tighten and fix it.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing an example of a conventional fastener for mounting a printed circuit board, Figs. 2 and 3 show an embodiment of the fastener for mounting a printed circuit board according to the present invention, and Fig. 2 shows the mounting process. FIG. 3 is a sectional view showing the attached state. 1... Fastener, 2... Printed circuit board, 2a... Mounting hole, 3... Mounting screw, 4... Fixing base, 5 ...... Fastener body part, 6... Insertion part, 6a... Divided piece, 7... Insertion hole, 8... Slit, 9
・・・・・・Latching claw.

Claims (1)

[Claim for Utility Model Registration] A main body of a fastener that is used to attach a plate-like object such as a printed circuit board to a fixing base and serves as a spacer between the plate-like object and the fixing base, and the main body of the fastener. an insertion portion integrally molded at the tip of the plate and inserted into the mounting hole of the plate-shaped body; and an insertion hole for a mounting screw formed from the tip of the insertion portion to the rear end of the main body of the fastener. In the fastener equipped with a hole, the insertion portion has a plurality of slits formed from its tip, and a locking claw is formed on the outer surface of the insertion portion, so that a mounting screw can be inserted into the insertion portion from the outside. A fastener characterized in that when screwed in, the tip of the insertion portion expands and the locking claw presses and fixes the plate-shaped body.