JP2002310665A - Columnar member holding part and vibration gyro manufacturing method using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration gyro manufacturing method, capable of stably fixing a vibrator and support members with high accuracy, and to provide a columnar member holding part used in the same. SOLUTION: This columnar member holding part 20 is equipped with two longitudinal contact pieces 20a and 20b for horizontally pinching an end part of the vibrator as a columnar member, and two lateral contact pieces 20c and 20d; they are deformed elastically, to widen the space between them by applying pressures to pressing parts 20m and 20n, and the vibrator is disposed in the widened space; and then by removing the pressures the vibrator is disposed at a position and the support members are fixed in this state. This vibration is prevented from looking to the exterior, the stability of vibration is enhance, and the performance of the vibration gyro can be enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a columnar member holding portion and a method of manufacturing a vibrating gyroscope using the same, and more specifically, a highly accurate positioning and fixing of a vibrator and a supporting member using the columnar member holding portion. The present invention relates to a method of manufacturing a vibrating gyroscope.

[0002]

2. Description of the Related Art FIG. 9 is a perspective view of a vibrator portion of a conventional vibrating gyroscope. In FIG. 9, the vibrator section 1 includes a vibrator 2 and metal supporting members 9 and 10.

[0003] Among them, the vibrator 2 is polarized in the thickness direction and has a piezoelectric substrate 3 having a first electrode 4 and a second electrode 5 formed on one main surface thereof. On the other hand, the piezoelectric substrate 6 having the third electrode 7 formed on the main surface
However, the fourth electrodes 8 are arranged so that the directions of polarization are opposite to each other.
And the other main surfaces are bonded together. The support members 9 and 10 are formed to have two Z-shaped bent portions, respectively, and are provided on the third electrode 7 on one main surface of the piezoelectric substrate 6 by, for example, solder or a conductive adhesive. Electrically and mechanically fixed. In addition, finally, even on one main surface of the piezoelectric substrate 3,
The first electrode 4 and the second electrode 5 like the support members 9 and 10
The two support members are fixed so as to straddle, but are omitted here.

FIG. 10 is an exploded perspective view showing a method of fixing the supporting members 9 and 10 to the vibrator 2.

[0005] As shown in FIG.
Is extended from one inner surface of the vibrator base 11 to the other opposing inner surface inside the frame of the vibrator base 11 made of resin. Here, the vibrator base 11 is for holding the vibrator 2 hollow through the support members 9 and 10 and for confining the energy of the vibration of the vibrator 2 in the frame. , 10 are formed integrally.

The vibrator 2 is mounted on supporting members 9 and 10 inside the frame of the vibrator base 11, and is adhered and fixed at a contact portion thereof with, for example, solder or a conductive adhesive. At this time, since the vibrator 2 has one main surface of the piezoelectric substrate 6 in contact with the support members 9 and 10, the third electrode 7 and the metal support member 9,
10 will be electrically and mechanically connected.

The vibrator 2 is provided with a support member 9 so that the vibration of the vibrator 2 is not obstructed as much as possible and the vibration of the vibrator 2 does not leak out of the vibrator base 11 as much as possible.
When fixing the vibrator 10, the vibrator 2 needs to be positioned at a predetermined position of the support members 9 and 10, actually at the center. Therefore, inside the two opposing side walls of the vibrator base 11, both ends of the vibrator 2 are held to support members 9, 10.
The columnar member holding portions 12 and 13 for positioning with respect to are provided.

FIG. 11 is an enlarged perspective view of the columnar member holding section 12. As shown in FIG. The columnar member holding portion 12 includes a longitudinal contact piece 12a that abuts one end face of the vibrator 2 and a width contact piece 12a that abuts both side faces in the width direction of one end of the vibrator 2.
b and 12c, a bottom surface contact piece 12d that contacts the bottom surface of one end of the vibrator 2, and arm portions 12e and 12f are integrally formed. The arm portions 12e and 12f have one ends connected to the width-direction abutting pieces 12b and 12c, respectively, and the other end connected to the inner side surface of the side wall of the vibrator base 11, so that the longitudinal-direction abutting pieces 12a and the width direction The contact pieces 12b and 12c and the bottom contact piece 12d are held in the hollow inside the side wall of the vibrator base 11. A concave portion for escape is formed in a portion of the vibrator base 11 close to the longitudinal contact piece 12 so that they do not contact each other. Although detailed description is omitted, the columnar member holding unit 1
3 is configured in exactly the same manner as the columnar member holding portion 12.

The vibrator 2 is positioned at a predetermined position on the support members 9 and 10 by the columnar member holding portions 12 and 13 configured as described above, and is fixed to the support members 9 and 10 in that state. After the vibrator 2 and the support members 9 and 10 are fixed, the arms 12e and 12f are cut at a connection portion with the vibrator base 11 or at an appropriate position so as not to hinder the vibration of the vibrator 2. The columnar member holding portion 1
2 is removed. The columnar member holder 13 is similarly removed.

[0010]

In the case of the columnar member holders 12 and 13 shown in FIG. 11, the distance between the longitudinal abutment piece 12a of the columnar member holder 12 and the longitudinal abutment piece of the columnar member holder 13 is shown. Is formed slightly larger than the length of the vibrator 2 so that it can be accommodated even if the length of the vibrator 2 varies somewhat. The width direction contact piece 1 of the columnar member holding portion 12
The interval between 2b and 12c is also formed slightly larger than the width of the vibrator 2 so that it can be accommodated even if the width of the vibrator 2 varies somewhat. The width direction contact piece in the columnar member holding portion 13 is formed in the same manner.

For this reason, the vibrator 2 is provided with the columnar member holding portion 12.
Even in the state where the vibrator 2 and the support members 9 and 10 are held in the state where the vibrator 2 and the supporting members 9 and 10 are not sufficiently obtained, there is a problem in that they can be slightly moved in the longitudinal direction and the width direction. Further, there is a possibility that the positional relationship between the vibrator 2 and the support members 9 and 10 before and after the curing may be changed due to heat or vibration during curing of the adhesive. If the positioning accuracy between the vibrator 2 and the support members 9 and 10 is insufficient, the vibration of the vibrator 2 becomes unstable,
Vibration leaks to the outside.

In order to improve the positioning accuracy of the vibrator 2, it is conceivable to provide a mechanism for pressing the vibrator 2 in one of the longitudinal direction and the width direction in the columnar member holding portion. In this case, there is a possibility that the variation of the vibrator 2 is biased and the temperature characteristic of the vibrating gyroscope is given some inclination.

Further, since the vibrator 2 is only pressed against the supporting members 9 and 10 by its own weight, the force for pressing the vibrator against the supporting member is insufficient due to the progress of miniaturization and weight reduction of the vibrator. There is also a problem that the vibrator 2 floats from the support members 9 and 10 when the adhesive is hardened, so that poor conduction is likely to occur.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and a method of manufacturing a vibrating gyroscope capable of stably fixing a vibrator and a support member with high positional accuracy and a columnar member holding used therefor Provide department.

[0015]

In order to achieve the above object, a columnar member holding portion of the present invention is a columnar member which holds both ends of a columnar member having a predetermined length and width and positions it at a predetermined position. In the holding portion, the two end portions of the columnar member are arranged so as to be sandwiched from the longitudinal direction of the columnar member at intervals shorter than the length of the columnar member, and are respectively arranged in the width direction of the columnar member. A total of four longitudinal contact pieces, which are divided into two, and two ends of the columnar member are separated from the width direction of the columnar member at intervals smaller than the width of the end of the columnar member. Four width-direction abutting pieces arranged so as to sandwich the same, and four to which external pressure is applied.
At one position corresponding to the two ends of the columnar member, each one of the longitudinal contact pieces, the width contact pieces, and the press parts, which are arranged adjacent to each other, are integrated. The longitudinal abutment piece and the width abutment piece, which are respectively formed integrally with the four pressing portions by applying pressure to the four pressing portions and elastically deforming, are moved. The distance between the two longitudinal contact pieces facing each other and the distance between the two width contact pieces facing each other are temporarily larger than the length of the columnar member and the width of the end of the columnar member. It is characterized by being formed so that it does.

Further, the columnar member holding portion of the present invention is characterized in that:
The two longitudinal contact pieces, the four width contact pieces, and the four pressing portions are formed as a lead frame formed by processing one metal plate together with a positioning target on which the columnar member is positioned. It is characterized by the following.

Further, the method of manufacturing a signal gyro according to the present invention is directed to a method of manufacturing a vibrating gyroscope using the former columnar member holding portion and fixing a supporting member supporting the vibrator to the vibrator as the columnar member. A method of applying a pressure to a pressing portion of the columnar member holding portion to elastically deform the pressing portion, so that a space between the two facing longitudinal contact pieces and a width of the two facing width contact pieces facing each other. A first step of temporarily increasing the interval from the length of the vibrator and the width of the end of the vibrator, respectively, and two longitudinal contact pieces opposing each other, which are widened by the first step. A second step of disposing the vibrator between the two width-direction abutting pieces that are opposed to each other, and removing pressure applied to a pressing portion of the columnar supporting member holding portion. By each other A third step of sandwiching the vibrator between the two longitudinal contact pieces and the two width contact pieces to position the vibrator with respect to the support member; and 4th fixed to the vibrator
And a fifth step of removing the columnar member holding portion from the vibrator.

Further, the method for manufacturing a vibrating gyroscope according to the present invention uses the latter columnar member holding portion formed as a lead frame and the supporting member to be positioned, and further comprises: A method of manufacturing a vibrating gyroscope that fixes the supporting member that supports a vibrator, the method including applying pressure to a pressing portion of the columnar member holding portion of the lead frame to elastically deform the pressing member, thereby forming the two longitudinally opposed longitudinal members. A first step of temporarily widening the interval between the two width-direction abutting pieces and the interval between the two width-direction abutting pieces that are opposed to each other, more than the length of the vibrator and the width of the end of the vibrator; Disposing the vibrator between the two longitudinal contact pieces facing each other spread by the first step and between the two width contact pieces facing each other; And step, by removing the pressure that has been added to the pressing portion of the columnar support member holding portion,
A third step of sandwiching the vibrator between the two longitudinal contact pieces and the two width contact pieces facing each other and positioning the vibrator with respect to the support member; A fourth step of fixing the columnar member holding section from the vibrator by separating the support member from the lead frame.
And a step of:

With such a configuration and implementation, in the columnar member holding portion and the method of manufacturing a vibrating gyroscope using the same according to the present invention, the vibrator and the supporting member can be stably fixed with high positional accuracy. .

[0020]

FIG. 1 is an enlarged perspective view of one embodiment of a columnar member holding portion of the present invention. FIG. 2 is a plan view and FIG. 3 is a front view. 1 to 3, the same parts as those in FIG. 11 are denoted by the same reference numerals, and description thereof will be omitted.

In FIG. 1, the columnar member holding portion 20 has longitudinal contact pieces 20a and 20b which contact one end face of the vibrator 2, and widths which contact both side faces in the width direction of one end of the vibrator 2. Direction contact pieces 20c and 20d, bottom contact pieces 20e and 20 that contact the bottom face of one end of the vibrator 2.
f, arms 20g and 20h, fixing portions 20i and 20
j. Among them, the longitudinal contact piece 20
a, width direction contact piece 20c, bottom contact piece 20e, arm part 20
g, the fixing portion 20i is integrally formed. Also, a longitudinal contact piece 20b, a width contact piece 20d, a bottom contact piece 2
0f, the arm portion 20h, and the fixing portion 20j are also integrally formed. The fixing portions 20i and 20j are connected to the inner side surface of one side wall of the vibrator base 11, and the fixing portion 20i and the width direction contact piece 20c are connected to each other via the arm portion 20g. Each is connected via an arm 20h. That is, the fixing portion 20i and the arm portion 20g hold the longitudinal contact piece 20a, the width contact piece 20c, and the bottom contact piece 20e hollow inside the transducer base 11. Also,
The fixing portion 20j and the arm portion 20h connect the longitudinal contact piece 20b, the width contact piece 20d, and the bottom contact piece 20f to the vibrator base 1.
1 is held in the hollow inside the side wall.

In the columnar member holding section 20, the longitudinal contact pieces 20a and 20b are formed by the conventional columnar member holding section 12a.
Corresponds to the longitudinal contact piece 12a. The bottom contact pieces 20f and 20g correspond to the bottom contact piece 12d in the conventional columnar member holding portion 12.

Further, another columnar member holding portion having the same configuration is provided inside another side wall of the vibrator base 11 opposite to the side wall on which the columnar member holding portion 20 is provided.

The longitudinal contact piece 20 of the columnar member holding portion 20
The distance between a and 20b and the two longitudinal contact pieces of the other columnar member holding portion facing each other is formed slightly shorter than the length of the vibrator 2. In addition, the columnar member holding section 2
The interval between the zero width direction contact pieces 20c and 20d is formed slightly shorter than the width of the vibrator 2. The widthwise abutting piece of another opposing columnar member holding portion is similarly formed.

The fixing portions 20 i and 20 j are formed in a rectangular plate shape, and one side thereof is connected to the side wall of the vibrator base 11. Therefore, the two corner portions of the fixed portions 20i and 20j, which are not connected to the vibrator base, are easily deformed by pressure from the vertical direction. Further, since a substantially triangular hole is provided in the inside, particularly, a corner portion near the connection position with the arm portions 20g and 20h is easily deformed. In the present invention, this portion is called a pressing portion, and the reference numerals of the pressing portions of the fixed portions 20i and 20j are 20m and 20n, respectively. The columnar member holding portion provided to be connected to another opposing side wall also has a pressing portion.

The columnar member holding section 20 thus configured
A method of manufacturing a vibrating gyroscope using the method will be described below.

First, as a first step, the vibrator base 11
Fixing portions 20 of columnar member holding portions 20 provided in
Pressure is applied upward from below to the pressing portions 20m and 20n of i and 20j. Actually, the pressing portions 20m and 20n are pushed up from below with a pin-like material. Thereby, the fixing portions 20i and 20j are elastically deformed so as to warp upward. At this time, the arm portions 20g and 20f connected near the pressing portions 20m and 20n are also particularly the width direction contact pieces 20c and 20d.
The end that is connected to moves significantly upward. However, in this case, the vibrator base 1 of the fixed portions 20i and 20j
Since the connection portion with 1 serves as a fulcrum of deformation, the arm portion 20g, 2
The ends connected to the width-wise abutting pieces 20c, 20d of 0f not only move upward but also separate from each other, and are attached to the side walls to which the fixed parts 20i, 20j of the vibrator base 11 are connected. Move closer. According to this, the longitudinal contact piece 20 connected to the arm 20g
a, the width direction contact piece 20c and the bottom contact piece 20e, and the longitudinal direction contact piece 20b, the width direction contact piece 20d and the bottom contact piece 20f connected to the arm 20h also move upward. Are moved away from each other and closer to the side wall to which the fixing portions 20i and 20j of the vibrator base 11 are connected. In addition, another one facing the columnar member holding portion 20 is provided.
In the two columnar member holding portions, the same pressure is applied to the pressing portions, and the longitudinal contact pieces, the width contact pieces, and the bottom contact pieces move in the same manner.

FIGS. 4 and 5 are a front view and an AA sectional view showing the operation of the columnar member holding section 20 at this time. 4 and 5, (a) shows a state before pressure is applied to the pressing portion, and (b) shows a state where pressure is applied.

As shown in FIG. 4A, the pressing portion 20m,
Before applying pressure to 20n, the interval between the two widthwise contact pieces 20c and 20d of the columnar member holding portion 20 is W1, and the vibrator 2
Is set so as to be narrower than the width of one end. Then, as shown in FIG. 4B, by applying pressure to the pressing portions 20m and 20n to elastically deform the fixing portions 20i and 20j, the interval between the two widthwise abutting pieces 20c and 20d increases to W2. . The pressure applied to the pressing portions 20m and 20n is determined in advance so that the interval w2 is larger than the width of the end of the vibrator. In FIG. 4B,
Two white arrows indicate the pressure applied to the pressing portions 20m and 20n and the directions thereof.

Further, as shown in FIG.
Before applying pressure to 0 m and 20 n, the distance between the longitudinal contact pieces 20 a and 20 b of the columnar member holding section 20 and the two longitudinal contact pieces of the other columnar member holding section facing each other is L.
1 is set to be slightly shorter than the length of the vibrator 2. Then, as shown in FIG. 5B, by applying pressure to the pressing portions 20m and 20n to elastically deform the fixing portions 20i and 20j, the interval between each two longitudinal contact pieces increases to L2. . The pressing parts 20m, 20n
The pressure to be applied is predetermined.

As described above, as the first step, the pressing portion 20
By applying pressure to m and 20n, the longitudinal contact pieces 20a and 20b of the columnar member holding portion 20 can be easily formed,
The interval between the longitudinal contact pieces of the other columnar member holding portion facing each other can be made larger than the length of the vibrator 2. Also, the width direction contact pieces 20c and 20d of the columnar member holding portion 20 are provided.
And the distance between the two widthwise contact pieces of the other columnar member holding portion can be made larger than the width of the vibrator 2.

Next, as a second step, two opposing columns of the two columnar member holding portions spread by the first step.
The vibrator 2 is arranged between two longitudinal contact pieces and between two width contact pieces opposing each other, and on two opposing bottom contact pieces. I do. In this state, the vibrator 2 can move in the horizontal direction.
Its position accuracy is not enough.

Next, as a third step, the pressure applied to the pressing portions 20m and 20n of the columnar member holding portion 20 and the pressing portion of the other columnar member holding portion is removed. Thereby, the deformation of the fixing portions 20i and 20j of the columnar member holding portion 20 and the fixing portion of the other columnar member holding portion is eliminated,
The longitudinal abutment, the width abutment and the bottom abutment return to their original positions. At this time, the vibrator 2 is sandwiched in the longitudinal direction by the four longitudinal contact pieces, and its end is sandwiched in the width direction by the two width contact pieces to be positioned with respect to the support members 9 and 10. You. At that time, vibrator 2
Is not necessarily biased from either direction, so that it is located at approximately the center of the four opposing longitudinal contact pieces and the widthwise contact pieces, respectively, and , 10 with high accuracy. In addition, since a force is applied to the vibrator 2 from all four directions in the horizontal direction, there is no degree of freedom of movement in the horizontal direction unless an external force is applied.

Further, the vibrator 2 is not only positioned with respect to the support members 9 and 10, but also sandwiched between the longitudinal contact pieces and the width contact pieces, and the elastically deformed fixed portion returns to its original position. A force is applied in the downward direction by the force that is going to be applied. That is, they are pressed against the support members 9 and 10. Therefore, compared with the case where the vibrator 2 comes into contact with the support members 9 and 10 due to its own weight, the force of pressing the two members against each other is stronger, and the position of the contact portion is stabilized.

At this time, the vibrator 2 and the support members 9, 1
It is assumed that solder or a conductive adhesive is applied to at least one side of the zero contact portion.

Next, as a fourth step, the vibrator 2 and the supporting members 9 and 10 are fixed by melting solder or applying heat to the conductive adhesive to cure the conductive adhesive. At that time, vibrator 2
Since the and the support members 9 and 10 are pressed against each other, there is almost no possibility that the positional relationship between them and the conduction failure will occur.

Finally, as a fifth step, a connection portion between the side wall of the vibrator base 11 and the four fixing portions of the two columnar member holding portions, or an appropriate one of the four arm portions of the two columnar member holding portions. By cutting the position, the two columnar member holding portions are removed.

As described above, in the method for manufacturing a vibrating gyroscope according to the present invention, by using the vibrator base 11 having the columnar member holding portion 20, the supporting members 9, 10 can be stably mounted on the vibrator 2 with high positional accuracy. Can be fixed.
In addition, since the columnar member holding portion has a function of pressing the vibrator against the support member, even if the vibrator is reduced in weight, connection with the support member does not become unstable, and occurrence of poor conduction is prevented. be able to. Then, by increasing the positional accuracy between the support member and the vibrator and fixing the vibrator stably, the stability of the vibration of the vibrator can be improved and the vibration can be prevented from leaking to the outside.

By the way, in the method of manufacturing the vibrating gyroscope, the supporting member for fixing the vibrator is not always formed integrally with the vibrator base in advance. For example, a supporting member is supplied as a part of a hoop-shaped lead frame, and the supporting member and the vibrator are fixed in the state of the lead frame, and thereafter, the supporting member is cut together with the vibrator from the lead frame and fixed to the vibrator base. Such a manufacturing method is also conceivable. At this time, if the columnar member holding portion is formed integrally with the support member on the lead frame, the positional accuracy between the support member and the vibrator can be further improved.

FIG. 6 is a perspective view of another embodiment of the columnar member holding portion of the present invention formed integrally with the support member on such a lead frame.

In FIG. 6, a lead frame 33 includes a frame portion 31, a columnar member holding portion 30 formed by processing one metal plate and integrally formed with the frame portion 31, and a support member 3.
2 is comprised. There are two columnar member holders corresponding to one vibrator corresponding to the two ends of the vibrator, but here, only the columnar member holder 30 corresponding to one end is shown. The illustration of another columnar member holding portion having exactly the same configuration is omitted. In addition, there are two support members fixed to one surface of one vibrator, but here, only one support member 32 is shown, and illustration of another support member is omitted.

The columnar member holding portion 30 shown in FIG. 6 has longitudinal contact pieces 30a and 30b which contact one end face of the vibrator 2, and widths which contact both side faces in the width direction of one end of the vibrator 2. Direction contact pieces 30c and 30d, bottom contact pieces 30e and 30f that contact the bottom face of one end of the vibrator 2,
It is composed of arms 30g and 30h and fixed parts 30i and 30j. Among them, the longitudinal contact piece 30a,
Width direction contact piece 30c, bottom contact piece 30e, arm 30g,
The fixing part 30i is formed integrally. Further, a longitudinal contact piece 30b, a width contact piece 30d, a bottom contact piece 30
f, the arm portion 30h, and the fixing portion 30j are also integrally formed. The fixing portions 30i and 30j are connected to the frame portion 31 of the lead frame 33. The fixing portion 30i and the bottom contacting piece 30e are connected via an arm 30g, and the fixing portion 30j and the bottom contacting piece 30d are connected via an arm 30h. Each is connected. That is, the fixing portion 30i and the arm portion 30g form the longitudinal contact piece 30.
a, the width direction contact piece 30c and the bottom face contact piece 30e are held hollow in the frame of the lead frame 33. The fixing portion 30j and the arm portion 30h hold the longitudinal contact piece 30b, the width contact piece 30d, and the bottom contact piece 30f hollow in the frame of the lead frame 33.

The longitudinal contact piece 30 of the columnar member holding portion 30
The distance between the two abutting pieces of the other columnar member holding portion facing a and 30b is formed slightly shorter than the length of the vibrator 2. In addition, the columnar member holding portion 3
The interval between the zero width direction contact pieces 30c and 30d is slightly shorter than the width of the vibrator 2. The widthwise abutting piece of another opposing columnar member holding portion is similarly formed.

Since the fixing portions 30i and 30j are only partially connected to the frame portion 31, the fixing portions 30i and 30j are vertically elastically applied to the connecting portions between the arm portions 30g and 30h and the fixing portions 30i and 30j. It is easy to deform.
When the fixing portions 30i, 30j are deformed, the arms 30g, 30
h is a longitudinal contact piece 30 formed to be connected thereto.
a, moves in the vertical direction together with the width direction contact piece 30c, the bottom face contact piece 30e, the longitudinal direction contact piece 30b, the width direction contact piece 30d, and the bottom face contact piece 30f. In the present invention, the arms 30g and 30h to which pressure is applied from the vertical direction
The connection portion between the first and second fixing portions 30i and 30j is called a pressing portion, and the reference numerals of the pressing portions are 30m and 30n, respectively. However,
In FIG. 6, the display of the pressing portion 30n is omitted because it is shaded by the widthwise contact piece 30d.

The columnar member holding section 30 thus configured
Also, by applying a pressure upward from below to the pressing portions 30m and 30n, the longitudinal contact piece 30a and the longitudinal contact piece 30b connected to the arm 30g move upward and Further, the distance between the other columnar member holding portion and the longitudinal abutting piece is slightly larger than the length of the vibrator 2. Also, the width direction contact piece 30
c and 30d also move upward, and the distance between them increases slightly from the width of the vibrator 2. And, between two opposing longitudinal contact pieces of the two columnar member holding portions, and between two opposing width contact pieces opposing to each other, and furthermore, facing two opposing pieces. By arranging the vibrator 2 on the two bottom abutting pieces and removing the pressure applied to the pressing portion, the vibrator 2 is sandwiched from the longitudinal direction by the four longitudinal abutting pieces, each having two width directions. The end is sandwiched in the width direction by the contact piece and positioned with respect to the two support members. At this time, since the pressure biased from any direction is not applied to the vibrator 2,
It is located at a substantially central portion of each of the four longitudinal contact pieces and the width contact pieces facing each other, and is positioned with high precision with respect to the support member. In addition, since a force is applied to the vibrator 2 from all four directions in the horizontal direction, there is no degree of freedom of movement in the horizontal direction unless an external force is applied.

Further, the vibrator 2 is not only positioned with respect to the support member, but also sandwiched between the longitudinal contact pieces and the width contact pieces. The force trying to return applies a force in the downward direction. That is, it is pressed against the support member. Therefore, compared to the case where the vibrator 2 comes into contact with the support member by its own weight, the force for pressing the both members is strong and stable.

At this time, it is assumed that solder or a conductive adhesive is applied to at least one side of the contact portion between the vibrator 2 and the two support members.

After fixing the vibrator 2 and the support member, the support member is fixed to the vibrator base. Then, in this state, for example, the connecting portions between the arm portions 30g and 30h of the columnar member holding portion 30 and the fixing portions 30i and 30j are cut off, and at the same time, the support member is cut off from the frame portion 31 of the lead frame 33. Thus, the frame portion 31 and the columnar member holding portion 30 of the lead frame 33 can be removed. In this way, the vibrator 2 is held in the hollow inside the vibrator base by the support member.

As described above, by using the columnar member holding portion of the present invention, two support members including the support member 32 can be stably fixed to the vibrator 2 with high positional accuracy. Further, unlike the case of the columnar member holding portion 20 shown in FIG. 1, the columnar member holding portion and the support member are integrally formed on the same lead frame 33, so that the position between the columnar member holding portion and the support member is different. The accuracy can be further increased, and the support member can be fixed to the vibrator 2 with higher positional accuracy than when the columnar member holding section 20 is used.
Further, since the columnar member holding portion has a function of pressing the vibrator against the support member, the connection with the support member does not become unstable even when the vibrator is reduced in weight. By increasing the positional accuracy between the support member and the vibrator, the stability of the vibration of the vibrator can be further improved, and the vibration can be prevented from leaking to the outside.

In each of the embodiments described above, the vibration gyro of the type in which the end of the support member is fixed to the vibrator base is shown, but the end of the support member is not used without using a frame-shaped vibrator base. A vibrating gyroscope that is bent downward and directly fixed to the component mounting board may be used.

FIG. 7 is a perspective view of still another embodiment of the columnar member holding portion of the present invention formed integrally with such a lead frame with a supporting member for fixing the end portion directly to the component mounting board. Show. 7, the same or equivalent parts as those in FIG. 6 are denoted by the same reference numerals, and description thereof will be omitted.

In FIG. 7, the difference between the lead frame 40 and the lead frame 33 shown in FIG.
2 is changed to the support member 41, and the lead frame 3
Similar to No. 3, it is formed by processing one metal plate. Since the role of the columnar member holding portion 30 in the lead frame 40 is exactly the same as that of the lead frame 33, the description is omitted, but the same operational effects are obtained.

FIG. 8 is a perspective view of a vibrating gyroscope manufactured using the lead frame 40. 8, the same or equivalent parts as those in FIG. 7 are denoted by the same reference numerals, and description thereof will be omitted.

In FIG. 8, a vibrating gyroscope 50 is configured by holding a vibrator 2 in a hollow above a component mounting board 45 via four support members 41, 42, 43 and 44.
The four support members 41, 42, 43, and 44 have a number of bent portions so as not to suppress vibration in the thickness direction and the width direction of the vibrator 2. Each electrode of the vibrator 2 is used to detect a drive circuit for bending and vibrating the vibrator 2 formed on the component mounting board 45 in the thickness direction via the support members 41, 42, 43, and 44 and a Coriolis force. It is connected to a circuit (not shown). Although a cover for covering the vibrator 2 and each circuit is provided on the component mounting board 45, it is omitted here.

In the vibrating gyroscope 50 configured as described above, since the vibrator 2 and the supporting member are fixed using the columnar member holding portion 30 formed on the lead frame 40, the vibration stability of the vibrator is stabilized. And vibration can be prevented from leaking to the outside.

[0056]

According to the columnar member holding portion and the method of manufacturing a vibrating gyroscope using the same according to the present invention, the columnar member holding portion sandwiches two ends of the vibrator, which is a columnar member, in four longitudinal directions respectively. With a direction contact piece and a width direction contact piece, the vibrator is arranged at a place where they are spread by utilizing elastic deformation due to pressure, and then the vibrator is arranged at a predetermined position by removing the pressure, By fixing the vibrator and the support member in this state, the vibrator and the support member can be stably fixed with high positional accuracy, and the performance of the vibrating gyroscope can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a columnar member holding section of the present invention.

FIG. 2 is a plan view showing a columnar member holding section of FIG. 1;

FIG. 3 is a front view showing a columnar member holding section of FIG. 1;

FIG. 4 is a front view for explaining an elastic deformation of the columnar member holding section of FIG. 1;

FIG. 5 is a cross-sectional view for explaining an elastic deformation of the columnar member holding section in FIG. 1;

FIG. 6 is a perspective view showing another embodiment of the columnar member holding section of the present invention.

FIG. 7 is a perspective view showing still another embodiment of the columnar member holding section of the present invention.

FIG. 8 is a perspective view showing a vibrating gyroscope manufactured using the columnar member holding section of FIG. 7;

FIG. 9 is a perspective view showing a vibrator portion of a conventional vibrating gyroscope.

FIG. 10 is an exploded perspective view for explaining a conventional method of fixing a support member to a vibrator.

FIG. 11 is a perspective view showing a conventional columnar member holding section.

[Explanation of symbols]

 2 vibrator 9, 10, 32, 41, 41, 43, 44 support member 11 vibrator base 20, 30 columnar member holding portion 20a, 20b, 30a, 30b longitudinal contact piece 20c, 20d 30c, 30d: width direction contact piece 20e, 20f, 30e, 30f: bottom contact piece 20g, 20h, 30g, 30h: arm part 20i, 20j, 30i, 30j: fixing part 20m, 20n, 30m, 30n: pressing Part 31 ... Frame parts 33, 40 ... Lead frame 45 ... Component mounting board 50 ... Vibrating gyroscope

Claims (4)

[Claims] 1. A columnar member holding section for holding both ends of a columnar member having a predetermined length and width and positioning the columnar member at a predetermined position, wherein two end portions of the columnar member are fixed to the length of the columnar member. A total of four longitudinal contact pieces, which are arranged so as to be sandwiched from the longitudinal direction of the columnar member at a shorter interval and are each divided into two in the width direction of the columnar member, Four width-direction abutting pieces arranged so as to sandwich the two ends from the width direction of the columnar member at intervals smaller than the width of the end of the columnar member; And four pressing portions, each of which is disposed adjacent to each other at a position corresponding to the two end portions of the columnar member, each one of the longitudinal contact pieces, the width contact pieces, and the press. The part is formed integrally By applying pressure to the four pressing portions to elastically deform the four pressing portions, the longitudinal contact piece and the width contact piece formed integrally with the four pressing portions move, and the two opposing pieces are opposed to each other. The space between the longitudinal contact pieces and the space between the two width-direction contact pieces facing each other are formed so as to be temporarily larger than the length of the columnar member and the width of the end of the columnar member. A columnar member holding section, characterized in that: 2. The four longitudinal contact pieces, the four width contact pieces, and the four pressing portions are formed by processing one metal plate together with a positioning target on which the columnar member is positioned. The columnar member holder according to claim 1, wherein the columnar member holder is formed as a lead frame. 3. A method for manufacturing a vibrating gyroscope using the columnar member holding portion according to claim 1, wherein a supporting member supporting the vibrator is fixed to the vibrator as the columnar member. By applying pressure to the pressing portion of the holding portion and elastically deforming it, the interval between the two longitudinal contact pieces opposing each other and the interval between the two width contact pieces opposing each other are temporarily set, respectively. A first step of increasing the length of the vibrator and a width of the end of the vibrator, and between the two opposing longitudinal contact pieces spread by the first step and facing each other A second step of arranging the vibrator between the two width-direction abutting pieces, and removing the pressure applied to the pressing portion of the columnar support member holding section, thereby forming the two opposing sections. Longitudinal contact piece and A third step of positioning the vibrator with respect to the support member by holding the vibrator between the two width-direction contact pieces and a fourth step of fixing the support member to the vibrator. And a fifth step of removing the columnar member holding portion from the vibrator. 4. The supporting member supporting the vibrator on the vibrator as the columnar member, using the columnar member holding portion and the supporting member as the positioning target according to claim 2 formed as a lead frame. A method of manufacturing a vibrating gyroscope, comprising: applying a pressure to a pressing portion of the columnar member holding portion of the lead frame to resiliently deform the pressing portion; Opposite 2
A first step of temporarily increasing the distance between the two width-direction abutting pieces from the length of the vibrator and the width of the end of the vibrator; A second step of disposing the vibrator between the two longitudinal contact pieces between the two longitudinal contact pieces and facing each other; and a pressing portion of the columnar support member holding portion. By removing the pressure applied to the vibrator, the vibrator is sandwiched between the two longitudinal contact pieces and the two width contact pieces facing each other, and the vibrator is positioned with respect to the support member. A third step of fixing the support member to the vibrator; a fifth step of removing the columnar member holding portion from the vibrator by separating the support member from the lead frame. And having A method for manufacturing a vibrating gyroscope, characterized in that: