JPH02228113A - Connection type crystal resonator - Google Patents

Abstract

PURPOSE:To simplify the fitting means and to obtain different reference signals from one piece of unit by connecting base parts of plural pieces of crystal resonators having different resonance frequencies and forming them integrally. CONSTITUTION:A base part 1' and 4' of a quartz oscillator 1 and 4 are connected by a connecting part 6. Therefore, the resonator 1 and 4 can be joined in a fixed position of a container 3 by a single work. In this case, as for a condition for the alignment, in a connecting edge 6' and 6'' of the connecting part 6, it is a desirable condition for the fixation to be in the inside of a base edge 3'' of a supporting base 3'. The reason why this condition is required is because mass of the supporting base 3' brought into contact and fixed to the connecting part 6 is increased enough in order to prevent each resonator from exerting an influence on each other. Also, by connecting these part 1' and base part 4', two pieces can be fixed simultaneously without applying any obstruction or variation to a resonating motion of the resonators 1 and 4.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is directed to a rational crystal oscillator applied to a crystal oscillator unit incorporated in an IC card, etc., in response to the demand for thinning in the electronic equipment industry. It is related to.

[Summary of the invention]

The present invention is a crystal oscillator applied to a thin crystal oscillator unit for obtaining a reference frequency as an electronic component applied particularly to thin electronic devices such as IC cards. As shown in FIG. When storing crystal resonators with different frequencies in the same container, it provides a resonator with a suitable shape. This simplifies the construction and fixing process, and as a result, it is possible to reduce series resonance resistance, reduce parts costs, and improve productivity.

[Conventional technology]

A conventional thin crystal oscillator unit is one in which one crystal oscillator 1 is housed inside a container 3, as shown in FIG. One was known that housed crystal oscillators 1 and 4.

[Problem to be solved by the invention]

However, although the structure of accommodating two crystal oscillators in one container as shown in FIG. 4 is preferable, it requires a number of man-hours to fix each crystal oscillator according to the number of crystal oscillators, and this poses a problem particularly in the implementation stage. In other words, when fixing depends on the viscosity of the conductive adhesive, when one piece is fixed and the next one is attached, the previous one will shift in position. A similar problem also occurred in the case of soldering.

The present invention solves the above problem by connecting a plurality of crystal oscillators,
The purpose is to solve the problem with one-time fixation.

[Means to solve the problem]

In order to solve the above problems, the present invention is characterized in that the crystal oscillators are composed of a plurality of crystal oscillators, each of which has a different resonance frequency, and are integrally molded with their bases connected. This is a connected type crystal oscillator that solves the above-mentioned problems by simultaneously performing the fixing operation once.

[Effect]

-a, the crystal resonator is divided into a vibrating part and a support part, and the support part is provided to hold and fix the vibrating part so as not to inhibit the free movement of the vibrating part. In other words, even if some additional conditions are applied to the support part, the vibrating part will not be affected, and the present invention makes use of this principle. is expressed as the base to facilitate understanding.

〔Example〕

Embodiments of the present invention will be described below based on the drawings. 1st
The figure is a plan view of crystal oscillators 1 and 4 of the present invention installed in a container 3.

Figure 2 is a cross-sectional view of the section A-A'' in Figure 1, and shows the crystal resonator 1.
is fixed on support electrodes 2 and 5 provided on a support base 3° approximately in the middle of the thickness of the container 3. This state is
It serves both as an electrical connection and a mechanical holding of the crystal resonator 1, and although not shown, four connection points are connected with conductive adhesive or the like, and are connected to connection terminals outside the container 3. It has been derived.

The features of the present invention are as shown in FIG.
The base parts 1' and 4' are connected by a connecting part 6, and as a result, the crystal units 1 and 4 can be joined to a predetermined position of the container 3 in one operation. At this time, as a positioning condition, it is preferable that the connecting edges 6° and 6' of the connecting part 6 are inside the joint edge 3'' of the support base 3'. In order to prevent each vibrator from influencing each other, the mass of the support base 3' that faces and is fixed to the connecting part 6 is made sufficiently large. By connecting the base parts 4', it is possible to fix the two crystal units 1 and 4 at the same time without any inhibition or change in their vibrational movements.

Although the illustrated example uses a tuning fork type crystal resonator of the same shape, it is also possible to apply a resonator of different dimensions or other shapes depending on the desired resonant frequency conditions. The first is that two crystal oscillators with different resonance frequencies are formed in a flat plate shape, and the parts that do not participate in vibration (the bases in the present invention) are connected by a connecting part. The quartz crystal resonator is preferably made from a quartz plate by etching.

〔Effect of the invention〕

As explained above, the coupled crystal resonator of the present invention has a cylindrical mounting means, which reduces manufacturing costs, and allows the position of the resonator to be controlled within the container, making it possible to reduce the size of the container.
It becomes possible to make it thinner. Also, two crystal oscillators are housed therein, and different reference signals thereof are obtained from one unit. These configurations not only make the electronic device thinner, but also have many effects such as cost reduction due to a reduction in the number of parts and improved productivity.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the crystal resonator of the present invention fixed in a container, Fig. 2 is a sectional view taken along the line A-A' in Fig. 1, and Figs. 3 and 4 are views of a conventional crystal resonator. It is a top view fixed in a container. 1.4...Crystal unit 1', 4'...Base 2.5...Support electrode/container 3''...Support stand 3''...Join edge/connection part 6'...Connection edge or above

Claims (1)

[Claims] 1. A connected type crystal oscillator comprising a plurality of crystal oscillators, each crystal oscillator having a different resonant frequency and integrally molded with connected base parts.