JPS6019387Y2 - composite oscillator - Google Patents

Description

[Detailed Description of the Invention] Technical Field> The present invention relates to a composite vibrator in which a plurality of vibrating bodies are enclosed in the same airtight container.

<Prior Art> It is well known that the accuracy of clocks has improved dramatically following the introduction of quartz clocks.

However, it is an inevitable trend that wristwatches in particular are required to be more compact due to volume limitations, and that even higher precision is required.

The present invention is intended to answer such a need.

In order to improve accuracy, improving the temperature coefficient of the vibrating body is a major issue, but recently a temperature coefficient correction method using two or more vibrators has been discussed, and it is becoming possible to put it into practical use.

However, when two or more vibrators are used, the cost doubles and the space also doubles.

<Purpose> The purpose of the present invention is to provide an extremely compact composite vibrator.

<Summary> The composite vibrator of the present invention includes a cylindrical airtight container, two plugs press-fitted into both ends of the airtight container, and one plug in each of the plugs.
The two tuning fork plate vibrators ( Hereinafter, the vibrating body) is arranged such that the forks formed on one vibrating body intersect with the forks of the other vibrating body at right angles, and the tip of one vibrating body is inside the base of the other vibrating body. The lead wire of the cylindrical airtight container and the vibrating body are characterized in that their longitudinal directions are parallel to each other. As shown in the figure.

FIG. 1 is a front sectional view showing a composite vibrator of the present invention, and FIG. 2 is a perspective view showing the arrangement of a tuning fork plate-shaped vibrating body, which is a feature of the structure of the present invention.

In the figure, the composite vibrator of the present invention includes an airtight container 1, two plugs 6.7 press-fitted into both ends of the airtight container 1,
Two lead wires 8, 9 and 1 fixed to the plug 6.7
, consisting of two tuning fork plate-shaped vibrating bodies 2 and 3 (hereinafter referred to as vibrating bodies 2 and 3) fixedly connected to the tips of each of the lead wires 8 and 9, and the two vibrating bodies 2 and 3 are as follows: As shown in FIG. 2, the feature is that the prongs 4 formed on one vibrating body 2 intersect with the prongs 5 formed on the other vibrating body 3 at right angles. There is.

In this example, the vibrating bodies 2 and 3 are made of a material that exhibits a piezoelectric effect, such as lithium tantalate, lithium niobate, or barium titanate, in addition to crystal.

The airtight container 1 is made of metal, ceramics, or the like, and is shaped into a cylinder, a square, an ellipsoid, or the like.

In FIG. 1 and FIG. 2, the prongs 4 of each of the vibrating bodies 2 and 3,
5, if the tip of one vibrating body is inserted into the base of the other vibrating body, the distance in the longitudinal direction can be further shortened.

This configuration can be an extremely effective means for achieving miniaturization in a configuration in which lead terminals are taken out in opposite directions from both ends of the airtight container.

Furthermore, the effects of the present invention can be even more pronounced by using a thin plate-like tuning fork type vibrator made by etching technology.

<effect> According to the present invention, the following advantages can be obtained.

■ A configuration in which two tuning fork plate-shaped vibrating bodies are placed in the same airtight container, crossing each other at right angles, so a configuration in which two vibrating bodies are stacked or placed in parallel in the same airtight container. Compared to this, in combination with the configuration in which the lead terminals are taken out in opposite directions at both ends of the airtight container, it is possible to accommodate the vibrating body in an airtight container with an outer diameter approximately similar to that of a configuration in which a single vibrating body is disposed, resulting in miniaturization.

■ By inserting the tip of one vibrating body into the base of the other vibrating body, combined with the structure in which one terminal is taken out in the opposite direction at each end of the airtight container, it is possible to shorten the length in the longitudinal direction and make it compact. can be achieved.

■ Since the two vibrating bodies are arranged at right angles to each other, even if one vibrating body bends, it is difficult to contact the other vibrating body, improving shock resistance and vibration characteristics. .

■ Since the cylindrical airtight container, the lead wires inserted from both ends of the container, and the tuning fork plate-shaped vibrating body are configured so that their longitudinal directions are parallel to each other, no extra space is required within the cylindrical airtight container. The effect of (2) can be combined to provide a composite vibrator with a very small diameter.

[Brief explanation of the drawing]

Figures 1 and 2 show examples of the present invention. 1... Airtight container, 2, 3... Tuning fork plate vibrating body, 4.5... Fork, 6, 7... Plug, 8, 9 ······Lead.

Claims (1)

[Scope of utility model registration request] A cylindrical airtight container, two plugs press-fitted into both ends of the airtight container, two lead wires fixed to each of the plugs, and fixedly connected to the tips of each of the lead wires. 2
In the composite vibrator, the two tuning fork plate vibrators are formed in one of the tuning fork plate vibrators, and the other tuning fork plate vibrator is in the fork formed on one of the tuning fork plate vibrators. The forks of the body are arranged to intersect at right angles, the tip of one of the tuning fork plate-shaped vibrating bodies reaches into the base of the other tuning fork plate-shaped vibrating body, and the airtight container is connected to the lead wire and the The tuning-fork plate-shaped vibrating body is a composite vibrator characterized by being configured such that the longitudinal directions thereof are parallel to each other.