JPS6314480Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is an automatic electronic component insertion device in which electronic components such as transistors, resistors, capacitors, etc. are inserted into a printed circuit board. This invention relates to a printed circuit board mounting device that presses and fixes the side edges of the printed circuit board.

Conventionally, this type of printed circuit board mounting equipment
The structure is as shown in Figure 1. That is, a rectangular opening A1 is formed in the base A,
The printed circuit board B placed on this base A is fixed to one side edge B by a board stopper C fixed to the base A.
1 is regulated in position, and the position is regulated by fitting the pin E protruding from the base A into the through hole D opened in the printed circuit board B. It is fixed to the base A by being held down by one end G1 of a presser fitting G which is rotatable around the fulcrum. As shown in FIG. 2, the presser fitting G in the conventional printed circuit board mounting device has a sleeve with a flange I at the same height as the printed circuit board B in a through hole H opened in the center of the presser fitting G. J is rotatably inserted, and the sleeve J and the presser metal G, which are the same height as the presser metal G, are manually fixed to the base A by tightening the screw F via the flat washer K so as to be rotatable. There is. Then, as mentioned above, the flat washer K is tightened by tightening the screw F.
By utilizing the friction between the
The presser metal G that is holding the printed circuit board B is
This prevents it from rotating accidentally due to machine vibrations, etc. However, with the presser foot G having the above structure, the movement is stiff and difficult to rotate at first, but after using it several times, the connection between the presser foot G and the flat washer K becomes easier. As the gap is worn out and the frictional force is lost, the holding fitting G will eventually rotate on its own due to vibrations from the machine, etc., and will no longer play the role of holding down the printed circuit board B.
In addition, when the presser foot no longer functions as a presser, it is necessary to retighten the screw F, but there are various drawbacks such as the fact that it is difficult to adjust the tightening method of the screw F. Ta.

Therefore, the present invention aims to solve the above-mentioned drawbacks, and it is possible to prevent the printed circuit board placed on the base from lifting up and securely fix it, and also prevent it from rotating accidentally due to vibration etc. Without,
It is an object of the present invention to provide a printed circuit board mounting device having a presser fitting that does not require readjustment once it has been mounted.

Hereinafter, the present invention will be described in detail with reference to the embodiments of the drawings. FIG. 3 is a sectional view showing the main parts of the present invention.
Other points are the same as those in FIG. 1, so they are omitted. In the figure, 1 is a base and 1a is the base 1
, 2 is a pin for position regulation, 3 is a printed circuit board, and 4 is a through hole for position regulation which is formed in the printed circuit board 3 and fits into the pin 2 described above. Reference numeral 5 denotes an arm-shaped presser metal fitting, and 6 is a through hole opened in the center of the presser metal fitting 5, and the upper half of the through hole 6 is formed into a large diameter circular hole 7. Reference numeral 8 denotes a sleeve that can be inserted into the above-mentioned through hole 6, but the height of the sleeve 8 is slightly higher than that of the presser metal fitting 5, and the lower end of the sleeve 8 has a sleeve at the same height as the printed circuit board 3. A flange 9 is provided.

10 is a compression type coil spring, 11 is a flat washer, and 12 is a hexagon socket screw.

Therefore, in order to assemble the above-mentioned parts, first, the sleeve 8 is inserted into the through hole 6 from the lower surface of the presser metal fitting 5, and then placed on the female thread 1b formed on the base 1. Next, the spring 10 is inserted into the circular hole 7 of the presser metal fitting 5, and the spring 10 is
After placing the flat washer 11 on top, insert the screw 12 through the flat washer 11 and sleeve 8, screw it onto the female screw 1b, and tighten until the flat washer 11 contacts the top surface of the sleeve 8, and the assembly is complete. is completed.

Thus, when the presser metal fitting 5 is manually rotated, the presser metal fitting 5 rotates using the screw 12 as a fulcrum, and if it stops when the end portion 5a of the presser metal fitting 5 reaches the side edge 3a of the printed circuit board 3, The presser metal fitting 5
The end portion 5a presses the printed circuit board 3 against the base 1 by the elastic force of a spring 10 interposed between the presser metal fitting 5 and the flat washer 11.
In the illustrated embodiment, the circular hole 7 is formed in the presser metal fitting 5, but the spring 10 is interposed between the upper surface of the presser metal fitting 5 and the flat washer 11 without forming the circular hole 7. You can.

FIG. 4 shows another embodiment of the present invention.
The structure of the fulcrum portion is completely the same as that of the previous embodiment, so a description thereof will be omitted. In this embodiment, at least two presser fittings 5, 5 are arranged in parallel, and both presser fittings 5, 5 are arranged in parallel.
The ends 5b, 5b on the same side are integrally connected by a connecting rod 13. That is, as shown in FIG. 5, the sleeve 14 is rotatably inserted into a through hole formed at the end of the connecting rod 13, and the sleeve 14 is held down by a hexagon socket screw 16 via a flat washer 15. 5 is fixed to the end portion 5b of 5. The connecting rod 13 may be provided on the end 5a side of the presser metal fitting 5 that holds the printed circuit board 3, or may be provided on both ends 5a and 5b, respectively.

Therefore, if one presser metal fitting 5 is manually rotated in a predetermined direction, the other presser metal fitting 5 can be attached to the connecting rod 13.
can be rotated in the same direction by the same rotation angle.

Conventionally, when there were at least two presser metal fittings 5, 5, both presser metal fittings 5, 5 were operated separately, so when the electronic component automatic insertion device moves quickly,
Often, one of the two presser fittings 5, 5 is not used, and the printed circuit board 3 cannot be prevented from floating, resulting in incorrect insertion of electronic components. However, in this embodiment, at least two presser metal fittings 5, 5 can be rotated simultaneously by one operation, so that the number of steps performed by the operator is halved. Further, as described above, in one operation, the ends 5a, 5a of at least two presser fittings 5, 5 are pressed against the printed circuit board 3.
The printed circuit board 3 can be held in the holding position even if the automatic electronic component insertion device moves quickly.
This has the advantage that it is possible to prevent the printed circuit board 3 from lifting up, and also to prevent errors in inserting electronic components by preventing the printed circuit board 3 from lifting up.

As mentioned above, the present invention includes a base on which a printed circuit board is placed, a board stopper provided on the board for regulating the position of one side edge of the printed circuit board, and a board stopper provided on the board for regulating the position of the printed circuit board protruding from the board. In a printed circuit board mounting device comprising a pin and an arm-shaped holding fitting that presses the other side edge of the printed circuit board provided on the board by the end, a through hole formed in the center of the holding fitting is provided with a through hole formed in the center of the holding fitting. Insert a sleeve that is taller than the metal fitting and has a flange that is the same height as the printed circuit board, fix the sleeve to the base via a flat washer, and insert a spring between the flat washer and the holding metal fitting. , because the elastic force of the spring presses the presser metal fitting towards the flange,
It has the following effects.

Spring 1 interposed between flat washers 11
Due to the elastic force of 0, the presser metal fitting 5 always presses the printed circuit board 3 with a constant force. Therefore, once the presser metal fitting is set, it will not be inadvertently rotated or loosened from its position due to vibration or the like.

The spring 10 allows the presser metal fitting 5 to reliably press the printed circuit board 3 against the base 1, thereby eliminating insertion errors and losses of electronic components due to the printed circuit board 3 coming up.

Since the presser metal fitting 5 is constantly pressed by the spring 10 rather than by the tightening force of the screw 12 as in the conventional example, there is no need to adjust it when installing the presser metal fitting 5, and the installation is easy. There is no need for readjustment thereafter, and the manual rotational force of the presser metal fitting 5 is always constant.

As in the conventional example, the presser metal fitting 5 and the flat washer 11
Since it does not utilize the frictional force between

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a conventional printed circuit board mounting device, FIG. 2 is a cross-sectional view of a main part of the same device, and FIG. 3 is a cross-sectional view of a main part showing an embodiment of a printed circuit board mounting device according to the present invention. 4 are plan views of other embodiments, and FIG. 5 is a sectional view of the same essential parts. DESCRIPTION OF SYMBOLS 1... Base, 3... Printed circuit board, 3a... Side edge, 5... Holder metal fitting, 5a, 5b... End, 6...
...Through hole, 8...Sleeve, 10...Spring,
11...Flat wire, 12...Screw.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A base on which a printed circuit board is placed, a board stopper provided on the board to regulate the position of one side edge of the printed circuit board, and the position of the printed circuit board protruding from the board. In a printed circuit board mounting device consisting of a regulating pin and an arm-shaped holding fitting that presses the other side edge of a printed circuit board provided on the board by an end, a through hole formed in the center of the holding fitting is provided. Insert a sleeve that is taller than the metal fitting and has a flange that is the same height as the printed circuit board,
A print characterized in that the sleeve is fixed to a base via a flat washer, a spring is interposed between the flat washer and the presser metal fitting, and the spring presses the presser metal fitting toward the flange. Board mounting equipment. (2) Scope of Utility Model Registration Claim 1, characterized in that a plurality of presser metal fittings are arranged, the ends of which are rotatably connected by connecting rods, so that they interlock when the presser metal fittings rotate. The printed circuit board mounting device described.