JPS5827546Y2 - ceramic resonator - Google Patents

Description

[Detailed description of the invention] This invention relates to a ceramic resonator, and its purpose is to simplify the installation work by making it easier to install and position the ceramic resonator on a printed circuit board, and to reduce external pressure. This provides a ceramic resonator that is strong even against

In the conventional ceramic resonator, as shown in FIG. 12, a ceramic resonator 3a is attached onto a printed circuit board 1a with a conductive adhesive or solder 11.

In addition, 4 a s 4 b' in the figure shows an electrode part.

However, in the configuration of the conventional example, when the ceramic resonator 3a is attached to the printed circuit board 1a, the ceramic resonator 3a is unstable and difficult to attach and position. Because of this, there was a problem with the strength from external pressure.

This idea eliminates the above-mentioned conventional drawbacks and problems.
a rectangular ceramic resonator having two electrode surfaces;
A printed circuit board is formed having two electrode surfaces and a hole or groove that is aligned with the two electrode surfaces. The ceramic resonator is formed so that both ends of the ceramic resonator and its peripheral parts are close to or in contact with the printed circuit board, and the ceramic resonator is inserted into this hole or groove, and the ceramic resonator is connected to the electrode section of the printed circuit board. A conductive adhesive or adhesive is applied so that the ceramic resonator is fixed to the printed circuit board while the electrode parts of the ceramic resonator are connected correspondingly to each other.
・The resonant part of the 7-inch resonator or the entire printed circuit board is covered with an elastic material, and the whole is molded with synthetic resin to form a single component.

Examples of this invention will be described below with reference to the drawings.

(Example 1) In FIG. 1, FIG. 2, and FIG. 3, 1 is a printed circuit board, 2 is a hole or groove into which a ceramic resonator 3 is inserted, and the details will be described later.

4 and 4' are electrode surfaces provided on the same surface of the printed circuit board 1;
5 is a terminal.

As shown in FIG. 2, the ceramic resonator 3 has a rectangular shape, and both surfaces are divided into electrode surfaces 6, 6' and non-electrode surfaces.

The electrode surfaces 4 and 4' of the printed circuit board 1 and the electrode surface 6 of the ceramic resonator 3 are inserted into the holes or grooves 2 provided in the printed circuit board 1.
, 6' are perpendicular (see Figure 3), so that the electrode parts of the printed circuit board 1 and the electrode parts of the ceramic resonator 3, 4, 6.4' and 6', are perpendicular to each other. The connected electrode surfaces 6, 6' of the ceramic resonator 3 are bonded to the electrode parts 4, 4' of the printed circuit board 1 to the ends of the electrode surfaces 6, 6', which are not resonant parts, using a conductive adhesive or... to generate ceramic resonance. The child 3 is fixed to the printed circuit board 1.

Further, the resonant portion of the ceramic resonator 3 or the entire printed circuit board is covered with an elastic material such as silicone rubber, and the entire body is molded with synthetic resin.

By adopting the above configuration, in this embodiment, a hole or a groove is formed in the printed circuit board, and a ceramic resonator is inserted into the hole or groove, so that ceramic resonance can be achieved when the ceramic resonator is attached to the printed circuit board. The positioning of the child becomes easy and the installation work is simplified.

In addition, since the electrodes of the printed circuit board only need to be provided on one side, it is possible to reduce costs, and since the narrow and elongated surface of the ceramic resonator is perpendicular to the thickness direction of the printed circuit board, it can withstand forces in the thickness direction of the printed circuit board. It is strong and has excellent effects such as increasing the strength of parts.

(Embodiment 2) In FIGS. 2 and 4, 7 is a printed circuit board, which has electrode surfaces 8 and 8' on both sides, and a hole or groove 9 into which the ceramic resonator 3 is inserted. has been established.

3 is the same ceramic resonator as used in Example 1, and 6 and 6' indicate electrode surfaces.

Note that 10 in the figure is a terminal. In this embodiment, the electrode surfaces 8, 8' of the printed circuit board T and the electrode surfaces 6.degree. ′ are parallel,
When inserting the ceramic resonator 3 (see Figure 5), connect the printed circuit board T and the electrode surfaces 8 and 6 of the ceramic resonator 3, respectively.
．． 8' and 6' are connected, and both ends of the electrode parts 6, 6' of the ceramic resonator 3, which are not resonant parts, and the electrode parts 8, 8' of the printed circuit board I are bonded with a conductive adhesive or The ceramic resonator 3 is fixed to the printed circuit board T by soldering.

Furthermore, the resonant portion of the ceramic resonator 3 or the entire printed circuit board is covered with an elastic material such as silicone, and the entire structure is molded with synthetic resin.

As described above, in this embodiment, a hole or groove is provided in the printed circuit board, and the ceramic resonator is inserted into this hole or groove, so that the positioning of the ceramic resonator when attaching the ceramic resonator to the printed circuit board is possible. This simplifies the installation work.

In addition, since the electrode surface of the ceramic resonator and the electrode surface of the printed circuit board are parallel to each other, excellent effects can be obtained, such as making it easier to connect the two electrode surfaces with conductive adhesive or solder. have

The shape of the hole or groove provided in the printed circuit board will be described in detail with reference to the shape of the first embodiment.

The shape of the hole or groove provided in the printed circuit board shall be as specified in Section 6.7.
．． 8, both ends of the ceramic resonator 3 and its surroundings are in contact with or close to the printed circuit board 1, and the resonant part of the ceramic resonator 3 is connected to the printed circuit board 1.
The following embodiment will be described below, which is constructed using straight lines and circular arcs so as not to come into close contact with the surface.

6 is composed of only straight parts. Forming in such a shape makes the shape simple and easy to process, and also reduces the gap between the ceramic resonator 3 and the printed circuit board 1. It is possible to minimize the necessary amount.

Next, FIG. 1 shows a structure consisting only of circular arc parts.

With such a shape, it is only necessary to make a hole with a drill large enough to accommodate the longitudinal sides of the ceramic resonator 3, making processing extremely simple and easy.

FIG. 8 shows a shape composed of a straight line part and a circular arc part, and by having such a shape, it is possible to process it to match the shape of the ceramic resonator 3.
It has excellent flexibility.

Next, an example of the position of the hole or groove 2 provided in the printed circuit board 1 will be described below with reference to FIGS. 9 to 11.

Note that the same numbers as above indicate the same parts. As shown in FIG. 9, the hole or groove 2 is formed so that the extension line B of the longitudinal side of the ceramic resonator 3 and the extension line A of the terminal 5 intersect perpendicularly.
Provided on the printed circuit board 1.

In this way, the electrode surfaces 4, 4' of the printed circuit board 1
Moreover, the molded component can be formed into a horizontally elongated and low-height item without complicating the length and shape of the terminal 5, so that it can be applied to a miniaturized set of circuits.

Next, the hole or groove 2 is formed so that the extension line C of the longitudinal side of the ceramic resonator 3 and the extension line A of the terminal 5 are parallel to each other.
FIG. 10 shows what is provided on the printed circuit board 1.

By doing this, the electrode surface 4 of the printed circuit board 1
．． 4' and terminals 5. Since the molded parts can be formed into long, thin and narrow pieces without complicating the lengths and shapes of the terminals 5 and 5, it can be applied to narrow spaces in miniaturized sets. be.

Next, as shown in FIG. 11, the hole or groove 2 is set at an arbitrary angle θ (0° x θ <180°θ) 90 so that the longitudinal extension line of the ceramic resonator 3 is at an arbitrary angle θ (0° x θ <180°θ) with the extension line A of the terminal 5. They are arranged so that they intersect at °.

By doing so, there is no possibility that the electrode portions of the printed circuit board 1 and the electrode portions of the ceramic resonator 3, 6 and 4', and 6' and 4 will be short-circuited.

Although each of the above describes the first embodiment in which the printed circuit board has electrode surfaces on one side, the same applies to the second embodiment in which the electrode surfaces are formed on both sides of the printed circuit board.

As mentioned above, this idea uses a configuration in which a hole or groove is provided in the printed circuit board and the ceramic resonator is inserted into this hole or groove, so positioning of the ceramic resonator is easy when attaching the ceramic resonator to the printed circuit board. 9. Work is simplified.

In addition, since the ceramic resonator is embedded in the hole or groove of the printed circuit board, the ceramic resonator can be protected from external pressure, and the ceramic resonator has various practical effects such as increased strength as a component. can.

[Brief explanation of the drawing]

Fig. 1 A is a plan view and a side view of a printed circuit board used in the ceramic resonator of Example 1 of this invention, Fig. 2 is an overall perspective view of the ceramic resonator used in Examples 1 and 2, and Fig. 3 The figure is an explanatory diagram of the state in which the ceramic resonator shown in Fig. 2 is inserted into the printed circuit board shown in Fig. 1, Fig. 4 A1 is a schematic plan view and side view of the printed board used in Example 2, and Fig. 4
6.7.8 is a plan view of an example of the shape of the hole or groove provided in the printed circuit board used in this invention. Figures 9, 10, and 11 are plan views illustrating the positions of holes or grooves provided in the printed circuit board of this invention. FIG. 12 is a sectional view of a main part of a conventional example. 1.1...Printed circuit board, 2,9...hole or groove, 3...
...Ceramic resonator, 4.4', 8.8.0. . ...electrode surface of printed circuit board, 5,10...terminal, 6゜6'...electrode surface of ceramic resonator.

Claims (1)

[Scope of utility model registration request] 1. A rectangular ceramic resonator having two electrode surfaces and a printed circuit board having two electrode surfaces and provided with a hole or groove spanning the two electrode surfaces are formed, and the hole or groove of this printed circuit board is The resonant part of the ceramic resonator is formed so that it does not come into close contact with the printed circuit board, and both ends of the ceramic pendulum and its peripheral parts are close to or in contact with the printed circuit board, and the ceramic resonator is inserted into this hole or groove. The electrode portions of the printed circuit board and the electrode portions of the ceramic resonator are connected in correspondence with each other, and the ceramic resonator is fixed to the printed circuit board with conductive adhesive or solder, and then the ceramic resonator is fixed to the printed circuit board. 1. A ceramic resonator characterized in that the resonant part or the entire printed circuit board is covered with an elastic body, and the whole is molded with synthetic resin to form a single component. 2. Form two electrode surfaces on one side of a printed circuit board, and insert a ceramic resonator into the hole or groove of this printed circuit board so that the electrode surface of the printed circuit board and the electrode surface of the ceramic resonator are perpendicular. A ceramic resonator according to claim 1 of the claimed utility model registration. 3. Practical use in which electrode surfaces are formed on both sides of a printed circuit board, and a ceramic resonator is inserted into the hole or groove of the printed circuit board so that the electrode surfaces of the printed circuit board and the electrode surfaces of the ceramic resonator are parallel to each other. A ceramic resonator according to claim 1 of patent registration. 4. The ceramic resonator according to claim 1, in which the holes or grooves provided in the printed circuit board are formed only in straight parts. 5. The ceramic resonator according to claim 1, in which the holes or grooves provided in the printed circuit board are formed only in circular arc portions. 6. The ceramic resonator according to claim 1, wherein the hole or groove provided in the printed circuit board is formed by a straight line part and a circular arc part. 7. The ceramic resonator according to claim 1, wherein the holes or grooves are provided on the printed circuit board so that the extended line of the longitudinal side of the ceramic resonator and the extended line of the terminal intersect perpendicularly. 8. The ceramic resonator according to claim 1 of the utility model registration, in which the holes or grooves are provided on the printed circuit board so that the extended line of the longitudinal side of the ceramic resonator is parallel to the extended line of the terminal. . 9. Place the hole or groove at an arbitrary angle θ (0°〈θ(180',
Ceramic resonators according to claim 1, which are arranged so as to intersect at θN90°).