JPH02186815A - Short side crystal resonator - Google Patents

Abstract

PURPOSE:To obtain a short side crystal resonator without generating the leakage of oscillation and with few loss resistance by unifying an oscillation part, a supporting part, a frame, and a mount part integrally by an etching method. CONSTITUTION:A resonator 1 is constituted of the oscillation part 2, the supporting part 3, the frame 4, and the mount part 5, and they are unified integrally by the etching method. Also, excitation electrodes are provided on the upper and lower planes of the oscillation part 2, and short side oscillation can occur by applying an alternating voltage between both electrodes. A hole 8 is provided at the supporting part 3, and since displacement in the direction of the supporting part 3 in a direction perpendicular to the short side oscillation occurs according to the short side oscillation, the displacement is converted to a curvature mode, and furthermore, the frame 4 enclosing the oscillation part is connected to the supporting part, and is supported fixedly with the mount part 5. In such a way, no oscillation leakage occurs, and the loss resistance can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to the shape of a short-side crystal resonator in which a vibrating part, a supporting part, and a frame are integrally formed by an etching method.

[Invention (already required)]

The object of the present invention is to provide a short-side crystal resonator with excellent electrical characteristics, that is, with very little vibration leakage and with a small loss resistance R1. Quartz is a physically and chemically very stable substance, and therefore, a so-called crystal resonator formed from it can have a low loss resistance and a high Q value. However, such excellent characteristics can only be obtained by designing a vibrator shape with small vibration leakage. In the present invention, the shape of the support part of the short-side crystal resonator in which the vibrating part, the support part, and the frame are integrally formed by etching is devised.
By modifying the structure, the energy of the vibrating part can be confined within the vibrating part. That is, an object of the present invention is to obtain a short-side crystal resonator that is easy to mount and has little vibration leakage.

[Conventional technology]

In conventional short-side crystal resonators, the vibrating part and the supporting part are integrally formed by etching, as shown in Japanese Patent Application Laid-Open No. 53-132988 and Japanese Patent Application No. 53-160737, but the mount part is Since they are provided at both ends of the vibrating section, it is difficult to support and fix them using two lead wires, which causes high costs. At the same time, it had the disadvantage of being weak against Opposition 7.

[Problem to be solved by the invention]

Therefore, it is an object of the present invention to solve the problems of the short-side crystal resonator being difficult to support and vulnerable to impact by providing a short-side crystal resonator with a new shape.

[Means to solve the problem]

FIG. 1 shows a plan view of an embodiment of the short-side crystal resonator shape of the present invention. The vibrator l is the vibrating part 2. Support part 3, frame 4
and a mount section 5. Excitation electrodes (not shown) are arranged on the upper and lower surfaces of the vibrating section 2, and extend to the mount section 5 for connection to external terminals. Now, when an alternating voltage is applied to the excitation electrode, the short side vibration vibrates not only in the short side direction but also in the direction of the support part 3 in the vertical direction. At this time, the support part 3 is provided with a six 6 to provide sufficient elasticity so that it vibrates in the bending mode. This allows the vibrating section to vibrate sufficiently freely. Furthermore, the support part 3 is connected to the foot 4 and is further supported and fixed by a mount part 5. Therefore, the vibration of the vibrating part 2 is not transmitted to the mount part 5, and a short-side crystal resonator with small vibration leakage can be obtained. As described above, the present invention has a shape that converts the vibration transmitted from the vibrating part 2 of the short side vibration into a bending mode of the support part 3, and a shape that connects both ends of the support part 3 to the frame 4 and the mount part 5. By doing so, the object of the present invention is achieved.

[Effect]

As described above, the present invention proposes a short-side crystal resonator formed by an etching method consisting of a vibrating section, a supporting section, a frame, and a mount section, thereby achieving a small size, excellent shock resistance, and loss resistance R5. A short-side crystal resonator having a small and high Q value can be obtained.

〔Example〕

Next, the results obtained with the present invention will be specifically described. 1st
The figure is a plan view of an embodiment of the short-side crystal oscillator shape of the present invention. Support part 3. frame 4
and a mount portion 5, which are integrally formed by etching. Further, excitation electrodes (not shown) are provided on the upper and lower surfaces of the vibrating section 2, and by applying an alternating voltage between both electrodes, short-side vibration can be caused. The support part 3 is provided with a 66, and as the short side vibrates, it is also displaced in the direction of the support part 3 in the direction perpendicular to it, so this displacement is converted into a bending mode, and the frame 4 surrounding the vibrating part is It is connected to the support part 3 and supported and fixed by the mount part 5. Therefore, it is possible to obtain a short-side crystal resonator with no vibration leakage, low loss resistance R+, and high Q (direction).Also, since the vibrating part, support part, frame and mount part are integrally formed by etching, A short-side crystal resonator that can be downsized and has excellent impact resistance can be obtained.

r Effects of the Invention As described above, the present invention provides a short-side crystal resonator with a new shape in which the vibrating part, the supporting part, the frame and the mount part are integrally formed by an etching method, thereby achieving the following effects. It has a remarkable effect.

■ By devising and improving the shape of the support part and frame, vibration can be made free, resulting in low loss resistance.

■ The vibrating part, support part, frame and mount part are integrally molded using the etching method, allowing for miniaturization.

■ At the same time, it has excellent impact resistance.

(2) Since the support part is connected to the frame, vibration leakage is small and loss resistance R is small.

■ Since it is fixed to a pedestal etc. with a mount part that is not affected by vibrations, vibration leakage is reduced.

[Brief explanation of the drawing]

FIG. 1 shows a plan view of an embodiment of the short-side crystal resonator shape of the present invention.・Vibrator・Vibration part・Support part・Frame・Mount part 0 Å or more

Claims (1)

[Claims] A short side crystal oscillator consisting of a vibrating part and a support part, the support part being a bridge part, a damping part and a mount part, characterized in that the support part is connected to the mount part and a frame is provided to surround the oscillator. A short-side crystal oscillator.