WO2020206712A1

WO2020206712A1 - Gyroscope

Info

Publication number: WO2020206712A1
Application number: PCT/CN2019/083326
Authority: WO
Inventors: 孟珍奎; 刘雨微
Original assignee: 瑞声声学科技(深圳)有限公司
Priority date: 2019-04-08
Filing date: 2019-04-19
Publication date: 2020-10-15
Also published as: CN109900262A; CN109900262B

Abstract

Provided is a gyroscope (100), comprising an annular support plate (20) and a vibrating member (30), wherein the vibrating member (30) includes an annular portion (31) and a plurality of elastic connecting portions (32) arranged at intervals along the circumferential direction of the annular portion (31), each elastic connecting portion (32) includes arc-shaped rods (321) arranged at intervals on the outer circumference of the annular portion (31), a first rod (322) connected between the arc-shaped rod (321) and the outer peripheral wall of the annular portion (31), and a second rod (323) extending from the arc-shaped rod (321) and fixed on the annular support plate (20), each arc-shaped rod (321) is distributed at intervals along a circle which is concentric with the annular portion (31). The vibrating member (30) of the gyroscope (100) is erected on the annular support plate (20), when the vibrating member (30) is rotated by external force, the current changes and the angular velocity is detected; providing a plurality of elastic connecting portions (32) not only maintains the elasticity of rotation but also suppresses unnecessary vibration; and the elastic connecting portions (32) are provided with arc-shaped rods (321) concentric with the annular portion (31), such that the structure of the entire vibrating member (30) has no acute angle, and it is easier to manufacture while maintaining elasticity and resistance to unnecessary vibration performance.

Description

Gyro

【Technical Field】

The invention relates to the technical field of gyroscopes, in particular to a gyroscope.

【Background technique】

The gyroscope is an angular velocity detection device.

The prior art gyroscope has a complicated structure. While maintaining the elasticity of rotation, some unnecessary vibrations are generated, so that the accuracy of rotation detection is not high enough.

Therefore, it is necessary to provide a gyroscope with stable vibration.

[Content of the invention]

The object of the present invention is to provide a gyroscope that can suppress unnecessary vibration and is easy to manufacture.

The technical scheme of the present invention is as follows:

A gyroscope is provided, which includes a ring-shaped support plate and a vibrating member erected on one side of the ring-shaped support plate. The vibrating member includes a ring-shaped portion and a plurality of circumferentially spaced circumferentially arranged on the ring-shaped portion. The elastic connecting portion on the outer circumference of the ring-shaped portion, each of the elastic connecting portions includes an arc-shaped rod extending in an arc shape and spaced apart on the outer circumference of the ring-shaped portion, and connected to the arc-shaped rod and the ring The first rod body between the outer peripheral walls of the part and the second rod body extending from the arc-shaped rod body and fixed to the annular support plate, each of the arc-shaped rod bodies being spaced along a circumference concentric with the ring part distributed.

Preferably, each of the elastic connecting portions includes one arc-shaped rod, two first rods, and one second rod, and the two first rods are separated from two of the arc-shaped rods. The end is extended to connect the outer peripheral wall of the ring portion, and the second rod body connects the arc-shaped rod body and the ring support plate.

Preferably, the second rod is connected to the midpoint of the arc-shaped rod; and/or,

The connection between the second rod body and the annular support plate is provided with pins for electrical connection.

Preferably, the angle formed by the connection between the second rod body and the arc-shaped rod body and the angle formed by the connection between the first rod body and the annular portion are both greater than or equal to 90 degrees.

Preferably, the number of the elastic connecting parts is an even number, and the even number of elastic connecting parts are distributed at equal intervals along the circumferential direction.

Preferably, the annular support plate has a hollow inner hole, and the central axis of the hollow inner hole coincides with the central axis of the annular portion.

Preferably, the hollow inner hole is a regular polygonal hole.

Preferably, the number of sides of the regular polygon hole is an even number, and the number of sides of the regular polygon hole is the same as the number of the elastic connecting parts, and each of the second rods corresponds to each side of the regular polygon hole one by one. The midpoint of and extending is connected to the annular support plate.

Preferably, the vibrating member is made of metal; and/or,

The vibration member is integrally formed.

Preferably, the gyroscope further includes a substrate, and the side of the ring-shaped support plate opposite to the vibrating member is laminated and fixed on the substrate.

The beneficial effects of the present invention are: the present invention provides a gyroscope, the vibrating member is erected on a ring-shaped support plate, and when the vibrating member is rotated by external force, the current changes, and the angular velocity is detected; the structure of the present invention Simple, multiple elastic connecting parts can maintain the elasticity of rotation and suppress unnecessary vibration; and the elastic connecting part is provided with an arc-shaped rod body concentric with the ring part, so that the entire vibrating part structure has no acute angles and maintains elasticity. And it is easier to manufacture while resisting unnecessary vibration performance.

【Explanation of drawings】

FIG. 1 is an exploded view of the structure of a gyroscope provided by an embodiment of the present invention;

2 is a schematic diagram of the overall structure of a gyroscope provided by an embodiment of the present invention;

Figure 3 is a cross-sectional view of A-A in Figure 2;

Fig. 4 is a top view of a gyroscope provided by an embodiment of the present invention.

【detailed description】

The present invention will be further described below with reference to the drawings and embodiments.

1 and 2, a preferred embodiment of the present invention provides a gyroscope 100, which includes a substrate 10, a ring-shaped support plate 20, and a vibrating member 30 erected on one side of the ring-shaped support plate 20. The vibrating member 30 includes a ring The shaped portion 31 and a plurality of elastic connecting portions 32 arranged on the outer periphery of the annular portion 31 at intervals along the circumferential direction of the annular portion 31, each elastic connecting portion 32 includes an arc extending and spaced apart on the outer periphery of the annular portion 31 An arc-shaped rod body 321, a first rod body 322 connected between the arc-shaped rod body 321 and the outer peripheral wall of the ring portion 31, and a second rod body 323 extending from the arc-shaped rod body 321 and fixed on the annular support plate 20, each of the arc-shaped rod bodies 321 are distributed along a circumferential interval concentric with the ring portion 31. A pin 324 for electrical connection is provided at the connection between the elastic connecting portion 32 and the annular support plate 20. The annular support plate 20 is made of silicon dioxide, and the vibrating member 30 is made of metal. The pin 324 is in a continuously energized state, so that the vibrating member 30 is also in a conductive state. The vibrating member 30 is erected on the ring-shaped support plate 20. Under normal conditions, the current is normal and there is no fluctuation; if the ring-shaped portion 31 is subjected to external pressure, the elastic connecting portion 32 will rotate, which will cause the current to change. When the current changes, the gyroscope 100 can detect the corresponding angular velocity change. The gyroscope 100 provided by the embodiment of the present invention has a simple structure, and the provision of a plurality of elastic connecting portions 32 not only maintains the elasticity of rotation but also suppresses unnecessary vibration; and the elastic connecting portion 32 is provided with an arc that is concentric with the ring portion 31 The rod body 321 makes the structure of the entire vibrating member 30 free of acute angles, which is easier to manufacture while maintaining elasticity and resistance to unnecessary vibration performance.

1 and 4, preferably, each elastic connecting portion 32 includes an arc-shaped rod 321, two first rods 322 and a second rod 323, the two first rods 322 from the arc-shaped rod 321 respectively Both ends extend to connect the outer peripheral wall of the ring portion 31. A distance is maintained between two adjacent elastic connecting portions 32, which can prevent the elastic connecting portions 32 from colliding with each other during vibration, thereby improving the accuracy and reliability of the detection result.

Preferably, the second rod body 323 is connected to the midpoint of the arc-shaped rod body 321. The angle formed by the connection between the second rod body 323 and the arc-shaped rod body 321 and the angle formed by the connection between the first rod body 322 and the annular portion 31 are both greater than or equal to 90 degrees. The overall structure of the vibrating member 30 has no acute angles, and it is easier to manufacture on the premise of maintaining the elasticity of rotation and resistance to unnecessary vibration.

Preferably, the number of the elastic connecting portions 32 is an even number, and the even number of elastic connecting portions 32 are distributed at equal intervals along the circumferential direction. The elastic connecting parts 32 are arranged at intervals along a circumference concentric with the ring part 31, the arrangement is uniform and the connection is stable, so that the gyroscope 100 can be more resistant to unnecessary vibration.

Preferably, the annular portion 31 has a circular ring shape, which has a simple structure, is convenient for manufacturing and molding, and facilitates the symmetrical connection of an even number of elastic connecting portions 32. Of course, the annular portion 31 may also have other regular polygonal shapes.

Preferably, the vibration member 30 is integrally formed. The vibrating member 30 is manufactured in an integrated manner, which is beneficial to the overall stability of the vibrating member 30, makes it more resistant to unnecessary vibration, and is convenient for industrial manufacturing.

1 and 3, preferably, the outer contour shape of the annular support plate 20 is rectangular, the annular support plate 20 has a hollow inner hole 21, and the central axis of the hollow inner hole 21 coincides with the central axis of the annular portion 31. The vibrating member 30 is erected on the ring-shaped support plate 20, and the portion of the ring-shaped support plate 20 facing the vibrating member 30 is set as a through hole, which can prevent the vibration of the vibrating member 30 from occurring between the elastic connecting portion 32 and the ring support plate 20 Collision, so as to affect the test results.

Preferably, the hollow inner hole 21 is a regular polygon hole, the number of sides of the regular polygon hole is an even number, and the number of sides of the regular polygon hole is the same as the number of the elastic connecting portion 32, and each second rod body 323 corresponds to each of the regular polygon holes one by one. The midpoint of the edge is extended and connected to the ring-shaped support plate 20. This arrangement can make the overall stability of the vibrating member 30 better. In the embodiment of the present invention, the number of elastic connecting portions 32 and the number of sides of the regular polygonal hole are both eight. Of course, the number of sides of the regular polygonal hole can be any other even number to ensure that the elastic connecting portions 32 are evenly arranged and connected stably, so that unnecessary vibration can be suppressed.

Preferably, the gyroscope 100 includes a substrate 10, and the side of the ring-shaped support plate 20 opposite to the vibrating element 30 is laminated and fixed on the substrate 10. Preferably, the substrate 10 is a rectangular plate. Here, by adding the substrate 10, the strength of the entire gyroscope 100 can be increased.

The principle of detecting the angular velocity of the gyroscope 100 provided by the embodiment of the present invention is: the vibrating member 30 is erected on the annular support plate 20. When the vibrating member 30 rotates due to external force, the current changes, and the angular velocity is detected. The gyroscope 100 provided by the embodiment of the present invention has a simple structure, and the provision of a plurality of elastic connecting portions 32 not only maintains the elasticity of rotation but also suppresses unnecessary vibration; and the elastic connecting portion 32 is provided with an arc that is concentric with the ring portion 31 The rod body 321 makes the structure of the entire vibrating member 30 free of acute angles, which is easier to manufacture while maintaining elasticity and resistance to unnecessary vibration performance.

The above are only the embodiments of the present invention. It should be pointed out here that for those of ordinary skill in the art, improvements can be made without departing from the inventive concept of the present invention, but these all belong to the present invention. The scope of protection.

Claims

A gyroscope, which is characterized in that it comprises a ring-shaped support plate and a vibrating member erected on one side of the ring-shaped support plate. The vibrating member includes a ring-shaped part and a plurality of circumferentially spacedly surrounding parts along the ring-shaped part. The elastic connecting portions are arranged on the outer circumference of the annular portion, each of the elastic connecting portions includes an arc-shaped rod extending in an arc shape and spaced apart on the outer circumference of the annular portion, connected to the arc-shaped rod and the The first rod body between the outer peripheral walls of the annular portion and the second rod body extending from the arc-shaped rod body and fixed to the annular support plate, each of the arc-shaped rod bodies being concentric with the annular part along one的circumferential spacing distribution.
The gyroscope according to claim 1, wherein each of the elastic connecting parts includes one arc-shaped rod, two first rods and one second rod, and the two second rods A rod body extends from both ends of the arc-shaped rod body to connect to the outer peripheral wall of the ring portion, and the second rod body connects the arc-shaped rod body and the ring-shaped support plate.
The gyroscope according to claim 2, wherein the second rod is connected to the midpoint of the arc-shaped rod; and/or,

The connection between the second rod body and the annular support plate is provided with pins for electrical connection.
The gyroscope according to claim 3, wherein the angle formed by the connection between the second rod body and the arc-shaped rod body and the angle formed by the connection between the first rod body and the ring portion are both greater than or Equal to 90 degrees.
The gyroscope according to claim 4, wherein the number of the elastic connecting parts is an even number, and the even number of elastic connecting parts are distributed at equal intervals along the circumferential direction.
The gyroscope according to any one of claims 2 to 5, wherein the annular support plate has a hollow inner hole, and the central axis of the hollow inner hole coincides with the central axis of the annular portion.
The gyroscope according to claim 6, wherein the hollow inner hole is a regular polygon hole.
The gyroscope according to claim 7, wherein the number of sides of the regular polygonal hole is an even number, and the number of sides of the regular polygonal hole is the same as the number of the elastic connecting parts, and each of the second rods They respectively correspond to the midpoints of the sides of the regular polygonal holes one by one and are extended and connected to the annular support plate.
The gyroscope according to any one of claims 1 to 5, wherein the vibrating member is made of metal; and/or,

The vibration member is integrally formed.
The gyroscope according to any one of claims 1 to 5, wherein the gyroscope further comprises a substrate, and the side of the ring-shaped support plate facing away from the vibrating member is laminated and fixed on the substrate .