JPH055694Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention relates to an ultrasonic delay line used in video equipment such as VTRs and television receivers.

Prior Art Conventionally, this type of ultrasonic delay line had a structure as shown in FIG. That is, a terminal pin 3 for connecting this ultrasonic delay line to a printed circuit board or the like is bent and fitted into a groove 2b of a rotation prevention part 2 formed integrally at the bottom of a storage body 1 fitted into a case 4. The terminal pin 3 was configured to be prevented from rotating.

Note that the above conventional example describes the case where the ultrasonic delay line is used as a horizontal type installed parallel to the printed circuit board 5 as shown in FIG. If there is no space, there are two types of use: a vertical type that is mounted perpendicularly to the printed circuit board 5 as shown in FIG.

Problems to be Solved by the Invention However, with this type of structure, depending on the mounting position, other parts may be placed around it, so it may not be possible to use it horizontally as shown in Figure 6 above. First, it has to be used as a vertical type as explained in Fig. 7 above, but there is no margin in the height direction, so if the height of the rotation prevention part 2 is reduced by 2h, the video equipment will be There was a problem in that it could not be accommodated if mounting space was available for the circuit.

That is, since the anti-rotation portion 2 integrally formed in the conventional storage body 1 has a structure that can be used both horizontally and vertically, the depth of the groove 2b for preventing the rotation of the terminal pin 3 is At least terminal pin 3
It requires more than 1/2 of the diameter 3a of
Therefore, the height dimension H of the product is the depth 2h of the groove 2b.
I needed to make the part extra large.

Therefore, there is no problem when bending the terminal pin 3 and using it horizontally, but when using it vertically, the height space of the video equipment should be reduced to the above dimensions.
It was necessary to make it 2 hours larger, and depending on the mounting position, there was a problem that it could not be installed due to lack of space, or it could come into contact with other printed circuit boards. Accordingly, the present invention provides an ultrasonic delay line that can be used in both vertical and horizontal configurations and is reduced in size when used vertically.

Means for Solving the Problems In order to solve the above problems, the ultrasonic delay line of the present invention is provided with a notch in a part of the bottom of the storage body, and a rotation prevention plate formed independently in this notch. It has a structure that allows it to be inserted in a detachable manner.

For this reason, when used as a normal vertical type, there is no need to prevent the terminal pin from rotating, so there is no need for a rotation prevention plate, and the height of the product can be reduced by the height of the rotation prevention plate. Can be made smaller. When used horizontally, rotation of the terminal pin can be prevented by fitting the rotation prevention plate into the notch of the storage body and bending and fitting the terminal pin into the groove provided in the rotation prevention plate. can.

Embodiment Hereinafter, an embodiment of the present invention will be described based on the accompanying drawings. In Figures 1, 2, and 3,
Reference numeral 1 denotes a storage body which is made of a thermoplastic resin or thermosetting resin molded product, and has a cutout 1a at a part of the bottom for attaching the rotation prevention plate 2. 2 is an independently provided anti-rotation plate made of thermoplastic resin or thermosetting resin, and has ribs 2a at both ends for positioning to the notch 1a provided in the storage body 1 and for preventing the plate from coming off; A plurality of grooves 2b are provided on the flat surface.
Reference numeral 3 denotes a terminal pin, which is held and fixed by press-fitting or insert molding so as to be in close contact with the side wall 1b of the notch 1a provided in the storage body 1. A case 4 is fitted into the upper part of the storage body 1, and is made of a molded product of thermoplastic resin or thermosetting resin.

When the ultrasonic delay line of the present invention configured as described above is used horizontally, a rib 2a for positioning and preventing the rotation prevention plate 2 from coming off is housed as shown in FIGS. The groove 2b of the anti-rotation plate 2 is engaged with the notch 1a of the body 1, and the groove 2b of the rotation prevention plate 2 is formed in the bottom 1c of the storage body 1
Rotation prevention plate 2 so that surface 2c not having
After fitting, the terminal pin 3 is bent and fitted into the groove 2b formed in the rotation prevention plate 2, thereby preventing the terminal pin 3 from rotating in the direction A. Also. The rotation prevention plate 2 is pressed against the storage body 1 by the terminal pin 3 to prevent it from coming off in the C direction, and also has ribs 2a for positioning and for preventing it from coming off.
This prevents it from coming off in the B direction and is held and fixed.

Furthermore, when used horizontally, the product may be used in a floating state to improve the mounting density of video equipment and circuit components, but in this case, the dimension L of the rotation prevention plate 2 shown in FIG. By adjusting the above, it is possible to correspond to the above-mentioned uses.

In addition, when using it horizontally like this,
Although the height H of the product increases by the amount of the anti-rotation plate 2, the height H of the product does not matter since this is limited to cases where sufficient space in the direction parallel to the printed circuit board 5 can be obtained.

Next, when using the ultrasonic delay line according to the present invention as a vertical type, since it is not necessary to prevent the terminal pin 3 from rotating, the rotation preventing plate 2 is not required, and as shown in FIG. Without using the board 2, the terminal pins 3 implanted in the storage body 1 fitted in the case 4 can be directly fitted and attached to the printed circuit board 5. Therefore, the height of the product (symbol h in Figure 4) can be reduced by the height of the anti-rotation plate 2, which saves space in the height direction when used in the circuit of video equipment. Once we are able to secure this, we will be able to solve traditional problems.

Effects of the invention Although the present invention is a single product, it can be easily adapted to both vertical and horizontal usage configurations, and also includes a rotation prevention plate that prevents the terminal pins from rotating. By making this possible, the device can be made thinner and smaller.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of essential parts of an ultrasonic delay line according to an embodiment of the present invention, Fig. 2 is a perspective view of the ultrasonic delay line in which a rotation prevention plate is fitted, and Fig. 3 is an exploded perspective view of the ultrasonic delay line according to an embodiment of the present invention. FIG. 4 is a perspective view of the anti-rotation plate; FIG. 4 is a front view when the ultrasonic delay line of the present invention is used vertically; FIG.
The figure is a perspective view of a conventional ultrasonic delay line, FIG. 6 is a front view when the conventional ultrasonic delay line is used horizontally, and FIG. 7 is a front view when the conventional ultrasonic delay line is used vertically. 1...Storage body, 1a...Notch, 1b...Side wall, 1c...Bottom, 2...Rotation prevention plate, 2a...
Rib, 2b...Groove, 2c...Surface without groove, 3
...Terminal pin, 4...Case, 5...Printed circuit board.

Claims (1)

[Scope of utility model registration request] It consists of a storage body with a plurality of terminal pins planted in a notch provided in a part of the bottom, and a case fitted into the top of this storage body, with a plurality of grooves in the flat part for bending and holding the terminal pins. The ultrasonic delay line is provided with a rotation prevention plate which is provided with ribs at both ends of a surface perpendicular to the plane portion and engages with the notch, and is detachably fitted into the notch.