JPH0582136U - Support for piezoelectric vibrator - Google Patents

Abstract

(57) [Summary] [Structure] The pair of plate supports 10 of the support body of the piezoelectric vibrator used for supporting and fixing the piezoelectric body of the piezoelectric vibrator are
Slit 1 for supporting semi-circular piezoelectric bodies facing each other
3 has a fixing portion 11 having a width of the slit becoming narrower toward both ends in the longitudinal direction of the slit, and further, a conductive material for fixing the piezoelectric body to the slit of the semi-arcuate fixing portion. The adhesive is provided inside the arc of the fixed part on the half arc. [Effect] The area in which the piezoelectric body is restrained from the plate support is reduced, and further, by providing the conductive adhesive inside the arc of the fixed portion on the semi-circular arc, the uniformity when forming the conductive adhesive is obtained. In addition, since the displacement of the piezoelectric body is suppressed when the piezoelectric body is fixed, it is possible to uniformly manufacture the piezoelectric vibrator with stable characteristics.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a structure of a support body of a piezoelectric vibrator used for supporting and fixing a piezoelectric body.

[0002]

[Prior Art]

 Conventionally, the shape of the plate support portion of the support used to support and fix the piezoelectric body of the piezoelectric vibrator is as shown in, for example, Japanese Utility Model Laid-Open No. 58-109331, as shown in FIG. The structure is as shown in b). FIG. 6A is a front view showing the plate support, and FIG. 6B is a side view showing the plate support.

As shown in FIGS. 6 (a) and 6 (b), the plate support 10 has a supporting portion 12 having a semi-arcuate fixing portion 11, and the fixing portion 11 is provided with a slit 13. The slit 13 provided in the semi-circular fixing portion 11 has a constant width up to both ends of the slit 13, and moreover, the slit 13 reaches the both ends of the semi-circular fixing portion 11.

FIGS. 7A and 7B show a state in which the piezoelectric support is supported and fixed by using the support of the piezoelectric vibrator using the plate support 10 shown in FIG. FIG. 7A is a front view and FIG. 7B is a top view.

As shown in FIGS. 7A and 7B, the piezoelectric body 20 having the electrode 22 formed therein is inserted into the slit 13, and the conductive adhesive 21 is attached to the fixing portion 11 of the plate support 10 of the support body 23. By coating, the piezoelectric body 13 is fixed to the plate support 10 of the support body 23.

[0006]

[Problems to be solved by the device]

 In order to stably oscillate the piezoelectric vibrator, it is necessary to reduce the resistance value of the equivalent circuit constant of the vibrator. That is, when the piezoelectric member is supported and fixed by the supporting member, it is necessary to make the piezoelectric member vibrate as easily as possible.

When the plate support 10 shown in FIGS. 6A and 6B is used, the piezoelectric body 20 is fixed as shown in FIGS. 7A and 7B, and the end surface of the piezoelectric body 20 is fixed. It contacts the support portion 12 of the plate support 10.

Further, the area of the portion fixed by the conductive adhesive 21 is also increased because it is supported and fixed on the entire surface of the fixed portion 11 on the semicircular arc. For this reason, the area of the region where the piezoelectric body 20 is restrained by the plate support 10 becomes large, which causes an increase in the resistance value.

Further, since the characteristics of the piezoelectric vibrator change depending on the adhesion area of the conductive adhesive 21, when the adhesion area of the conductive adhesive 21 increases, the adhesion area of the conductive adhesive 21 varies. However, there is a problem regarding the uniformity of the piezoelectric vibrator characteristics.

Further, in the plate support 10 shown in FIGS. 6A and 6B, the slit 13 provided in the fixing portion 11 of the plate support 10 is formed with a constant width over the entire length of the slit 13 in the longitudinal direction. ing.

Therefore, in the assembly process, when the piezoelectric body 20 is inserted into the slit 13, unless the plate support 10 is pressed against the piezoelectric body 20 with a strong force, the position of the piezoelectric body 20 is easily displaced, and the characteristics of the piezoelectric vibrator are increased. It also has the drawback of lacking uniformity. This misalignment is particularly problematic when the piezoelectric body 20 is inserted in the vertical direction.

Furthermore, pressing the plate support 10 strongly against the piezoelectric body 20 also causes an increase in the resistance value of the piezoelectric vibrator characteristic.

A structure for suppressing displacement of the piezoelectric body when it is fixed is described in, for example, Japanese Utility Model Laid-Open No. 51-117074. This is shown in FIG.

As shown in FIG. 8, the flat plate support 10 is provided with slits 13 whose width dimension is larger than the thickness of the piezoelectric body 20 in the central portion of the slit 13 and which becomes thinner toward both ends as compared with the central portion. ing.

FIGS. 9A and 9B show a state in which the piezoelectric support is supported and fixed by using the support of the piezoelectric vibrator using the plate support 10 shown in FIG. 9 (a) is a front view and FIG. 9 (b) is a side view.

As shown in FIGS. 9A and 9B, the piezoelectric body 20 on which the electrode 22 is formed is fixed at both ends of the slit 13 by the conductive adhesive 21.

Since the position of the piezoelectric body 20 is determined by the positions of both ends of the slit 13, the displacement is unlikely to occur, and the area where the conductive adhesive 21 is formed is small only at the both ends of the slit 13.

As a result, it is possible to prevent an increase in the resistance value caused by the size of the adhesive area, but it is difficult to form the amount and area of the conductive adhesive 21 with good uniformity. Therefore, this variation causes a problem regarding the uniformity of the characteristics of the piezoelectric vibrator.

Further, in the flat plate support 10 extending in the vertical direction shown in FIG. 8, the rectangular piezoelectric body cannot be fixed so that one side of the rectangular piezoelectric body is parallel to the support plate 10. Therefore, the piezoelectric body has to be fixed obliquely.

For this reason, since it is difficult to support and fix the piezoelectric body in a well-balanced manner, it is difficult to support and fix the piezoelectric body without impairing the characteristics of the piezoelectric vibrator.

Therefore, an object of the present invention is to solve the above problems and provide a structure of a support necessary for producing a piezoelectric vibrator having stable characteristics with good uniformity.

[0022]

[Means for Solving the Problems]

 In order to achieve the above object, the support of the piezoelectric vibrator of the present invention has the following structure.

The plate support of the support used to support and fix the piezoelectric body of the piezoelectric vibrator of the present invention has a semi-circular fixing portion, and the semi-circular fixing portion supports the piezoelectric body. The slit is formed so that the width of the slit becomes smaller toward both ends in the longitudinal direction of the slit, and the conductive adhesive that fixes the piezoelectric body is a semi-circular arc of the fixed part Provide inside.

The plate support of the support used to support and fix the piezoelectric body of the piezoelectric vibrator of the present invention has a semi-circular fixing part, and the semi-circular fixing part supports the piezoelectric body. There is a supporting slit, and this slit is formed in a part of the semi-circular fixed portion, and the conductive adhesive that fixes the piezoelectric body is provided inside the semi-circular fixed portion arc.

[0025]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 (a) and 1 (b) show a structure of a plate support in which a fixing portion used for a support of a piezoelectric vibrator according to the present invention has a semi-arcuate shape, and FIG. 1 (a) shows a front surface of the plate support. It is a figure and Drawing 1 (b) is a side view showing board support.

As shown in FIG. 1A, the plate support 10 has a semicircular arc-shaped fixing portion 11 on a supporting portion 12, and a slit 13 is provided in the fixing portion 11. The slit 13 provided in the fixed portion 11 of the plate support 10 has a shape that tapers toward both ends in the longitudinal direction of the slit 13.

FIGS. 2A and 2B show a state in which the piezoelectric body 20 on which the electrode 22 is formed is supported and fixed to the plate support 10 shown in FIG. 2A is a front view and FIG. 2B is a top view.

As shown in FIG. 2B, when the piezoelectric body 20 is supported and fixed using the support body of the piezoelectric vibrator using the plate support 10 of the present invention, the width dimension of the slit 13 is the slit 13. Since the thickness of the piezoelectric body 20 is larger than the thickness of the piezoelectric body 20 at the center of the piezoelectric body 20 and becomes narrower toward both ends of the slit 13 in the longitudinal direction, the piezoelectric body 20 is fixed at a position where the thickness of the piezoelectric body 20 is balanced with the width of the slit 13. .

Therefore, as shown in FIG. 2A, the piezoelectric body 20 does not come into contact with the supporting portion 12 of the plate support 10.

Further, the area fixed by the conductive adhesive 21 is also smaller than in the conventional case. For this reason, the area constrained by the plate support 10 becomes small, so that it is possible to prevent the resistance value from increasing due to the fixing of the conductive adhesive 21.

Furthermore, since the slit 13 is tapered toward both ends in the longitudinal direction of the slit 13, the piezoelectric body 10 comes into point contact with the fixed portion 11.

For this reason, the piezoelectric body 20 can be easily pressed by the plate support 10 without causing displacement by merely utilizing a slight spring property of the plate support 10.

In addition, the adhesion area of the conductive adhesive 21 is small, and further, the conductive adhesive 21 is provided inside the arc of the fixed portion 11 on the semi-arc of the plate support 10.

Therefore, it is possible to suppress variations in the characteristics of the piezoelectric vibrator caused by the difference in the bonding area of the conductive adhesive 21, and improve the uniformity of the characteristics of the piezoelectric vibrator.

FIGS. 3A and 3B show a plate support 10 used as a support for a piezoelectric vibrator according to another embodiment of the present invention. FIG. 3A is a front view showing the plate support. FIG. 3B is a side view showing the plate support.

As shown in FIGS. 3 (a) and 3 (b), the plate support 10 has a semicircular arc-shaped fixing portion 11 on the supporting portion 12, and the slit 13 has a center portion of the semicircular arc fixing portion 11. It is provided only in the section.

As shown in FIGS. 3A and 3B, by providing the slit 13 only in the central portion of the fixed portion 11 on the semi-circular arc of the plate support 10, the width of the slit 13 extends over the entire length of the slit 13. Even in a constant case, the piezoelectric body 20 does not come into contact with the plate support 10, and the area where the piezoelectric body 20 is restrained by the plate support 10 becomes small.

Therefore, the effect of suppressing an increase in resistance due to fixing can be obtained as in the embodiment shown in FIGS.

Furthermore, when the slit 13 is provided in the central portion of the fixed portion 11 on the semi-circular arc of the plate support 10, the width of the slit 13 is not constant over the entire length in the longitudinal direction, and the width of the slit 13 shown in FIG. As shown in b), the shape may be tapered toward both ends of the slit 13.

Further, even when the fixing portion 11 of the plate support 10 has a polygonal shape as shown in FIGS. 5A and 5B, the same effect as in the case of the semicircular arc shape can be obtained.

5A and 5B, the shape of the fixing portion 11 is shown as a triangle, but this shape may be a polygon of a triangle or more.

2A and 2B show the case where the piezoelectric body 20 has a rectangular shape, the present invention can be applied even if the piezoelectric body 20 has another shape such as a circular shape. It is possible to use the support of the piezoelectric vibrator according to.

[0043]

[Effect of the device]

 As described above, according to the present invention, a plate support having a pair of semi-arcuate fixed portions facing each other used for supporting and fixing the piezoelectric body of the piezoelectric vibrator and having slits whose widths become narrower toward both ends. The support of the piezoelectric vibrator using

Therefore, the area in which the piezoelectric body is restrained from the plate support becomes small, and furthermore, the conductive adhesive is formed by providing the conductive adhesive inside the arc of the fixed portion on the half arc. When the piezoelectric body is fixed, displacement is suppressed when the piezoelectric body is fixed. As a result, it becomes possible to manufacture a piezoelectric vibrator having stable characteristics with good uniformity.

Further, as for the same effect as described above, a slit is provided only in the central portion of the semi-arcuate fixing portion of the support plate, or a plate support having a structure in which the fixing portion of the plate support has a polygonal shape is used. It can also be obtained.

[Brief description of drawings]

FIG. 1 is a view showing a plate support used for a support of a piezoelectric vibrator according to an embodiment of the present invention.

FIG. 2 is a view showing a state in which a piezoelectric body is supported and fixed by using the support body of the piezoelectric vibrator according to the present invention.

FIG. 3 is a view showing a plate support used for a support of a piezoelectric vibrator according to another embodiment of the present invention.

FIG. 4 is a view showing a plate support used as a support of a piezoelectric vibrator according to another embodiment of the present invention.

FIG. 5 is a view showing a plate support used as a support of a piezoelectric vibrator according to another embodiment of the present invention.

FIG. 6 is a view showing a plate support used for a conventional piezoelectric vibrator support.

FIG. 7 is a view showing a state in which a piezoelectric body is supported and fixed by using a support body of a conventional piezoelectric vibrator.

FIG. 8 is a view showing a plate support used for a support of another conventional piezoelectric vibrator.

FIG. 9 is a view showing a state in which a piezoelectric body is supported and fixed by using a support body of another conventional piezoelectric vibrator.

[Explanation of symbols]

 10 Plate Support 11 Fixing Part 12 Supporting Part 13 Slit 20 Piezoelectric Body 21 Conductive Adhesive

Claims (3)

[Scope of utility model registration request] 1. A pair of plate supports of a support of a piezoelectric vibrator used for supporting and fixing the piezoelectric body of the piezoelectric vibrator,
The semi-arcuate fixing part faces each other, and the semi-arcuate fixing part has a slit for supporting the piezoelectric body, and the width of the slit becomes narrower toward both ends in the longitudinal direction of the slit. A support body for a piezoelectric vibrator, wherein a conductive adhesive for fixing the to the slit of the semicircular fixing portion is provided inside the semicircular arc of the fixing portion. 2. A pair of plate supports of the support of the piezoelectric vibrator used for supporting and fixing the piezoelectric body of the piezoelectric vibrator,
It has a semi-arcuate fixed part facing each other, and the semi-arcuate fixed part has a slit for supporting the piezoelectric body, and the slit is formed in a part of the semi-arcuate fixed part to make the piezoelectric body a semi-arcuate shape. A support for a piezoelectric vibrator, wherein a conductive adhesive for fixing to the slit of the fixing portion is provided inside the arc of the fixing portion on a semi-circle. 3. A plate support of a supporting member used for supporting and fixing a piezoelectric body of a piezoelectric vibrator is characterized in that a fixing portion for supporting and fixing the piezoelectric body has a polygonal shape. Support for piezoelectric vibrators.