JPS6121861Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a holding structure for a thickness-shear vibrator that has good electrical characteristics, excellent vibration resistance and impact resistance, and allows common parts.

Generally, thickness-shear resonators such as AT-cut crystal resonators and BT-cut crystal resonators are formed into a rectangular shape that is elongated in the X-axis direction, which is the main displacement direction of thickness-shear vibration, as a means of reducing the size. ing. FIG. 1 is a perspective view showing an example of a cage commonly used in this type of rectangular AT-cut crystal resonator. In FIG. 1, reference numeral 1 denotes a support base made of a conductive member;
A pair of support rods 2 are inserted through an insulating material 3 at a predetermined interval on the center line in the longitudinal direction. The support rod 2 is made of a conductive material, and a vibrator such as a crystal piece (not shown) is attached to the end protruding to one side of the support base 1 by soldering, adhesive, or the like, and is held therein. Note that electrodes are formed on this vibrator and led out to the other side of the support base 1 via the support rod 2, so that thickness shear vibration is excited by an electric signal applied from the outside. In this manner, the vibrator using the retainer can reduce the contact area between the support rod 2 and the vibrator, thereby obtaining good vibration characteristics without impairing the electrical characteristics. However, the support points of such a cage are limited to two locations at the ends of the support rods 2, and if the diameter of these ends is increased, the contact area increases and the electrical characteristics deteriorate, so the contact area must be reduced. This resulted in the drawback of low vibration resistance and impact resistance. Furthermore, in such a holder, the interval at which the support rods 2 are inserted through the support base 1 is determined by the length of the vibrator to be held.
On the other hand, the dimensions of the vibrator are determined by the desired resonance frequency, so when manufacturing vibrators with various resonance frequencies, it is necessary to prepare cages of various shapes, resulting in high costs and low productivity. There was a problem.

The present invention was devised in view of the above circumstances, and provides a holding structure for a thickness shear vibrator that has a simple structure, provides good electrical characteristics, vibration resistance, and impact resistance, and also allows for the use of common parts. The purpose is to provide

Hereinafter, one embodiment of the present invention will be described in detail with reference to the perspective views shown in FIGS. 2a and 2b.

In the figure, reference numeral 11 denotes a support base made of a conductive material, and a pair of lead terminals 12 are inserted through an insulating material 13 at a predetermined interval on the center line in the longitudinal direction of the support base 11. are doing. One side of an L-shaped support 14 is attached to the tip of each lead terminal 12 parallel to the plate surface of the support base 11 by brazing, welding, or the like. A recess 14a is provided at the tip of the other side of the support 14, and a protrusion 14b is formed in the recess 14a to face each other with a predetermined gap. Then, as shown in FIG. 2b, the substantially central part of the thickness of both ends of the vibrator 15 is sandwiched between the protrusions 14b of the support base 14, and fixed and held by, for example, soldering or conductive adhesive. The electrodes formed on the surface of the Shiko vibrator 15 are connected to the support base 14 and the lead terminals 12.
The data is extracted to the outside via the . In addition, when holding a thickness shear crystal resonator with a length of around 10 m/m and a resonance frequency of MHz, the thickness of the support 14 is 0.05.
mm to 0.3 mm, and the width is preferably about 0.3 mm to 2.5 mm from the viewpoint of balance between rigidity and elasticity.

With such a configuration, even if the lead terminals 12 are inserted through the support base 10 at regular intervals, the desired length can be achieved by adjusting the position where the support body 14 is fixed to the lead terminals 12. It is possible to hold the same size vibrator 15, and it is possible to use common parts. Since the support body 14 is designed to sandwich the vibrator 15 at approximately the center of its thickness, which is the neutral point of the vibration displacement, it can be firmly supported, and there is no deterioration of the electrical characteristics due to the increase in the number of support points. Characteristics will improve. Therefore, the vibration resistance and impact resistance are also extremely good.

It should be noted that the present invention is not limited to the above-mentioned embodiments; for example, as shown in FIG. 3, the width of the support body 14 may be partially narrowed to obtain good elasticity. Further, as shown in FIG. 4, a conductive foil 16 may be attached to the plate surface of the support 14 made of an insulating member.

As described in detail above, the present invention has a pair of lead terminals inserted through the support base 12, and an L at the end of the lead terminal.
One side of a letter-shaped support is fixed at an appropriate position, and the center of the thickness of both ends of the vibrator is held between protrusions formed opposite to the recesses on the other side of the support. It is. Therefore, it is an object of the present invention to provide a holding structure for a thickness-shear vibrator that can hold a vibrator of a desired length, obtain good electrical characteristics, vibration resistance, and shock resistance, and improve productivity by using common parts. Can be done.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of a conventional holding structure;
Figures 2a and 2b are perspective views showing an embodiment of the present invention;
FIGS. 3 and 4 are perspective views showing other embodiments of the present invention. 11...Support stand, 12...Lead terminal, 13...
...Insulating material, 14...Support, 14a...Recess, 1
4b... protrusion, 15... vibrator.

Claims (1)

[Scope of utility model registration request] a support base having a pair of lead terminals inserted therethrough; a support member formed in an L-shape and having one side fixed to each end of the lead terminal with one side parallel to the support base and the other side facing each other; A protrusion is provided facing each other at a predetermined interval from the distal end of a recess formed at the distal end of the other side of the body, and the center of the thickness of both ends in the longitudinal direction is sandwiched between the protrusions and the lead terminal and A holding structure for a thickness-shear vibrator, comprising a vibrator elongated in the X-axis direction and whose thickness-shear vibration is excited by a signal applied from the outside via the support.