JPS5827553Y2 - Crystal oscillator holding device - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a holding device for a crystal resonator.

The crystal oscillator will be explained with reference to FIG. 1. Holding springs 3, 3 are connected to the protruding tips of terminal pins 2, 2 implanted in a metal base 1, and a crystal oscillator 4 is placed between the holding springs. It is held in place and fixed with conductive adhesive.

It has a structure in which a metal cap 5 is sealed on a metal base 1 and a crystal resonator 4 is hermetically sealed.

As such crystal oscillators are miniaturized, there is a high risk that the holding spring 3 will come into contact with the metal cap 5 and cause a short circuit.

Due to this short circuit, the vibration characteristics of the crystal resonator may deteriorate,
It doesn't move or vibrate.

Therefore, it has been proposed to insert an insulating sheet, such as a Teflon film, inside the metal cap 5 so that even if the holding spring 3 comes into contact with the metal cap, there will be no short circuit. The film is in contact with the surface, which absorbs some of the vibrations, making it less fertile.

Therefore, the present invention aims to solve the above-mentioned drawbacks, and as shown in FIG.
, 6 are fixed.

Note that the insulating materials 6, 6 have spherical outer circumferential surfaces, and it is difficult to use elastic insulating materials such as silicone rubber, synthetic rubber, polyacetal, or foamed urethane.

The buffer material 6 is in contact with the metal cap 5, and the holding spring 3 and the metal cap cannot be in contact with each other.

Moreover, as shown in FIG. 2, the metal cap 5 is generally formed into a flat shape, and the spherical insulating material 6 makes surface contact with the inner wall surface of the metal cap.

Therefore, even if an external impact is received, the impact will be absorbed by the cushioning materials 6, 6.
The crystal resonator 4 is protected.

In the past, the holding spring 3 does not bend and come into contact with the metal cap 5, thus preventing short circuits.

As described above, according to the holding device of the present invention, impact resistance is improved with an extremely simple configuration, and contact between the metal camp and the holding spring can be prevented, and the broken crystal resonator comes into contact with the metal cap. There is no fear and assembly is easy.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, with FIG. 1 being a sectional view and FIG.
The figure is a sectional view taken along the line ■-■ in FIG. 1... Metal base, 3... Holding spring, 4... Crystal resonator, 5... Metal cap, 6... Cushioning material .

Claims (3)

[Scope of utility model registration request] (1) A crystal oscillator holding device characterized in that a cushioning material is fixed to the outside of a crystal oscillator holding spring located in a cap. (2) Scope of Utility Model Registration Claim 1. A holding device for a crystal resonator, wherein the cushioning material is an insulator. (3) Utility Model Registration Claim 1: The crystal resonator holding device according to claim 1, wherein the cushioning material is in surface contact with the inner wall of the cap.