JPH0321072Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an ultrasonic delay element using a glass ultrasonic delay line.

Glass ultrasonic delay lines are widely used in fields such as televisions and VTRs due to their small size, light weight, and excellent frequency characteristics. This glass ultrasonic delay line is usually manufactured by making a glass block into a pentagonal or hexagonal column, attaching an input/output transducer, and then cutting it into thin pieces.
Most have a thickness of about 1 mm, and are used in containers to prevent cracking and adhesion of foreign matter.

Figures 1 and 2 show a conventional example of a container body consisting of a hakama body and a lid body. Figure 1 is a front view with the lid removed, and Figure 2A is a front view of the container body with the lid removed. Its side view, B is a sectional view of the lid.

The hakama body 1 has a groove in the center for arranging the glass ultrasonic delay line 2, a pin 3 for an external extraction terminal, and a protrusion 5 for locking the lid body 4 as necessary. It has a locking device such as.

Further, the lid body is combined with the hakama body and covers the glass ultrasonic delay line. For this reason, the lid body is also formed with a recess 6 or the like for engaging with a protrusion or the like which is a locking member of the hakama body, if necessary.

The glass ultrasonic delay line has a transducer 7 formed on a glass plate, and has a pentagonal shape in this example, and the transducer and pins are connected by leads. In addition,
This lead is omitted in the figure.

This ultrasonic delay element was advantageous for mounting on a circuit board due to its small size, but as components have become smaller in recent years and the use of ICs has progressed, the space available for peripheral circuit components of the ultrasonic delay element has become a problem. It has been done.

The present invention solves these problems, and allows the glass ultrasonic delay line to be mounted more compactly.The glass ultrasonic delay line with the transducer attached to the glass plate is housed in the container body and can be taken out. In the ultrasonic delay element in which a terminal is formed, a circuit component is arranged inside the container body, a portion of the container body where the circuit component is arranged is cut out, and a sheet-like material is placed on the outer surface of the container body in the cutout portion. This is an ultrasonic delay element characterized by being pasted.

The ultrasonic delay element of the present invention is small and lightweight, with some of the peripheral circuit components housed in the same container as the glass ultrasonic delay line to save space.

Furthermore, in the present invention, since the portion of the container body in which the circuit components are arranged is cut out, the ultrasonic delay element can be made significantly thinner than an ultrasonic delay element that simply incorporates the circuit components.

Furthermore, in this invention, since the notch is covered with a sheet-like material, the glass ultrasonic delay line is not exposed to the outside through the notch, preventing dirt from entering from the outside, improving the reliability of the device. .

In the present invention, the sheet-like material may be a plastic film, a metal film, or a laminated film thereof, but an insulating plastic film or a laminated film with a plastic film on the surface is preferable, and it can be cut as necessary. It suffices if it is attached to an area slightly larger than the notch or to the entire side surface. Note that the pasting may be performed by various methods such as using an adhesive film, using an adhesive, and fusing using heat or ultrasonic waves.

It is also preferable to use this sheet-like material as a sticker for the device model name, lot number, manufacturer's name, etc., since it is possible to protect the notch and display the model name at the same time.

FIG. 3 is a front view of an example of the present invention in which circuit components are attached to the example of FIG. It shows where it is placed.

FIGS. 4A and 4B are a side view of the hakama body and a sectional view of the lid body of an example in which the hakama body of FIG. The width of the lid body must be increased by the amount of protrusion, and the outer width dimension _D2 is the same as that of the conventional example, ie, Fig. 2B.
It is thicker than the outer dimension D ₁ shown by twice the thickness of the circuit component (because there are circuit components on both sides).

Figures 4C and 4D are examples of the container body having the structure of the present invention, and show a side view of the hakama body and a sectional view of the lid body, respectively, and the hakama body is the same as that of the conventional example in Figure 2A. A notch 9 is provided in a portion of the lid body corresponding to the circuit component 8, and a sheet-like material 10 is provided on the surface of the notch 9.
is pasted. Note that this notch 9 is shifted in position on both sides of the glass ultrasonic delay line 2,
The notches on both sides will not appear at the same time if the cut is made at the same cross section, but to make it easier to understand, the notches on both sides are shown in the fourth section.
Figure D shows the notches on both sides.

By adopting such a configuration, the outer width dimension D ₃ can be made much thinner than in the case of FIG. 4B.
In particular, if the mounting thickness of the circuit components is thinner than the thickness of the lid body, it may be the same as the conventional example shown in FIG. 2, and even if the circuit components are built-in, the size may be the same as that of the conventional example.

FIG. 5 is a front view of an embodiment of the present invention in which a container body is formed using the hakama body shown in FIG. 3 and the lid body shown in FIG. Ru. Note that this figure shows a state in which no sheet-like material is pasted for the sake of clarity; in the actual case, a sheet-like material is pasted on this notch 9.

Also, in Figure 3, it is shown that the circuit components are attached before the cover is put on, but this is due to the shape of the cutout in the cover or the deformability of the cover. You can choose either to attach it or to cover it with a lid and then attach it. Similarly, the sheet-like material may be attached to the lid from the beginning, or it may be attached at the end.
It may be pasted in an appropriate process.

In addition, this glass ultrasonic delay line can be of the known conventional type, and is equipped with a glass plate input/output transducer. There are also types in which a transducer is attached to a hexagonal glass whose end apex is cut diagonally, and pentagonal glass which is a rectangular rectangle whose one short side is cut diagonally.

Furthermore, the notch is not limited to the rectangular shape of the embodiment, but may be circular, slit-shaped, etc., as long as the circuit components are arranged well, and it may be formed on any surface of the container body. Alternatively, the notch may extend to the end of the container body.

Of course, as in the embodiment, it is better to have a hole-shaped notch than to cut out all the way to the end in terms of strength, and it is also advantageous for miniaturization to form the notch on the surface with the largest area. Moreover, it is preferable from the viewpoint of the degree of freedom in the size of the notch and the strength of the container body.

Figures 6 to 8 show other embodiments of the present invention, in which the pins 13 for external extraction terminals are gathered on one side of the hakama body 11, and Figure 6 shows the state with the lid removed. The front view of the hakama body, Figure 7 is its side view, and Figure 8 is the front view of the hakama body.
The figure is a front view with the lid covered.

The sheet-like material 20 in FIG. 8 has the manufacturer's name,
It is a sheet-like material with the model name and lot number written on it, and if it is pasted onto the notch 19, it can be used both to protect the notch and display the manufacturer's name, etc., without any need for the conventional manufacturing process. Reliability can be improved without making any changes.

In this example, the pins 13 are gathered on one side of the hakama body 11, so the size is smaller than the previous example. Further, in this example, since only one circuit component 18 is provided, only one cutout 19 is provided, but of course two or more cutouts may be formed for two or more circuit components. You can.

FIGS. 9 and 10 show still another embodiment, and show a box-like body and a lid for placing a glass ultrasonic delay line 22 in a box-like body 21 and covering it with a plate-like lid. ing.

In this example, the external extraction terminal 23 is not a pin but a conductive film such as copper foil or thick film paste provided on the inner surface of the flat lid, and the circuit component is inserted into the cutout 29 provided in the lid. It is arranged.

Although FIG. 10 also shows a state in which no sheet-like material is attached, the sheet-like material is attached to this notch 29, and this attachment also involves integrating the lid body with the box-like body. It may be before or after the transformation.

11 and 12 show still another embodiment in which the circuit component 38 is a glass ultrasonic delay line 32.
These are a front view with the flat plate-shaped cover provided on the conductor provided above removed, and a front view with the cover covered. Shown without clothes. In this example, the sheet-like material may be, for example, a sheet-like material 40 having the shape shown by the broken line in FIG. 12.

In this example, the external extraction terminal 33 is a flat metal terminal separately placed at the bottom of the box-like body 31 that accommodates the glass ultrasonic delay line, and the circuit component 38 is an island-shaped conductive terminal provided on the glass ultrasonic delay line. connected on the body.

In the above description, the lead wires for connecting the terminals and the transducer, etc. are omitted because the diagrams would be complicated.

In this invention, the circuit components are placed inside the container of the glass ultrasonic delay line, and the peripheral wall of the container corresponding to the location where the circuit components are placed is cut out, and a sheet-like material is pasted on top of it. By this,
By accommodating the circuit components, an extremely thin and reliable ultrasonic delay element can be obtained.

In the present invention, ultrasonic delay elements of various shapes and structures are possible, not limited to those shown in the above examples, but among them, as shown in FIGS. 6 to 8, It is preferable that the circuit components are attached to the end of the container body, and it is preferable that the terminals be assembled on one side of the container body, since this has a large effect of reducing the thickness.

In addition, the present invention uses various elements such as IC chips, transistors, and diodes as circuit components, places two glass ultrasonic delay lines inside the container, changes the shape of pins, and attaches connectors. Application is possible.

As described above, compared to conventional ultrasonic delay elements, the present invention can be more compactly mounted, has higher reliability, and can be used in a variety of ways by arranging the circuit components by forming cutouts inside the container. It has the merits of being able to adopt a mounting method, being smaller in size and having higher reliability, and can be used in a variety of applications in the future.

[Brief explanation of the drawing]

FIG. 1 is a front view of a conventional example with the lid removed. FIG. 2 is a side view and a sectional view of a conventional example. FIG. 3 is a front view of the embodiment of the present invention with the lid removed. Figure 4A
and B are a side view and a sectional view of the conventional example, and Fig. 4 C and D
1 is a side view and a sectional view of an embodiment of the present invention. Fifth
The figure is a front view of an embodiment of the present invention. FIG. 6 is a front view of another embodiment of the present invention with the lid removed. FIG. 7 is a side view of the example shown in FIG. 6. FIG. 8 is a front view of the example shown in FIG. 6 with the lid covered. FIG. 9 is a front view of still another embodiment of the present invention with the lid removed. 10th
The figure is a front view of the lid body of the example shown in FIG. 9. Figure 11 shows
FIG. 7 is a front view of still another embodiment of the present invention with the lid removed. FIG. 12 is a front view of the example shown in FIG. 11 with the lid covered. Glass ultrasonic delay line: 2, 12, 22, 32,
External extraction terminal: 3, 13, 23, 33, circuit parts: 8, 18, 28, 38, cutout: 9,
19, 29, 39, sheet-like material: 10, 20, 4
0.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In an ultrasonic delay element in which a glass ultrasonic delay line with a transducer attached to a glass plate is housed in a container body and an external extraction terminal is formed,
An ultrasonic wave device characterized in that a circuit component is arranged inside a container body, a portion of the container body where the circuit component is arranged is cut out, and a sheet-like material is pasted on the outer surface of the container body in the cutout portion. delay element. (2) Claim 1 of the utility model registration claim characterized in that a circuit component is connected to the end of the external extraction terminal inside the container body, and the container body is cut out at a portion corresponding to the end portion. Ultrasonic delay element.