Miniature anti-seismic gyroscope

Abstract

The utility model provides a miniature shock-resistant gyroscope, which belongs to the technical field of angular rate, and comprises an assembly shell, a sealing cover, a detection component and a shock absorption piece, the assembly shell is provided with a containing cavity, and one side of the containing cavity is provided with an opening communicated with the outside; the sealing cover covers the opening of the accommodating cavity and is connected to the assembly shell; the detection assembly is arranged in the accommodating cavity, and the detection assembly comprises a packaging shell and a detection part arranged in the packaging shell; and the damping part sleeves or surrounds the periphery of the packaging shell and is used for relieving the vibration force borne by the detection assembly. The utility model provides a miniature shock-resistant gyroscope, and aims to solve the problems that a miniature gyroscope in the prior art has higher sensitivity to environmental interference and is easily influenced by an external vibration environment, so that the detection precision is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to angular velocity detection technical field, more specifically, relate to a kind of miniature anti-vibration gyroscope. BACKGROUND

[0002] Micro inertial measurement unit is a kind of inertial measurement system based on MEMS technology.MEMS technology is accompanied with the development of semiconductor integrated circuit microfabrication process and precision mechanical supermachining technology, and is integrated on the basis of microelectronic technology, precision mechanical technology, microsensor, microactuator, micro mechanical structure and related signal processing circuit.MEMS inertial device is integrated and packaged by using silicon microfabrication technology and highly integrated process technology, which realizes the miniaturization and mechatronics of system.

[0003] Micro inertial measurement unit includes MEMS gyroscope and MEMS accelerometer, MEMS gyroscope is an instrument that can accurately determine the orientation of an object by using Coriolis effect, and is mainly widely used in aviation, navigation, aerospace and defense industry as a kind of inertial navigation instrument.MEMS gyroscope is a precision detection instrument, and external vibration factors can affect data collection and internal circuit.However, with the development of technology, it is required that the gyroscope has high precision and smaller size.

[0004] However, the continuous reduction of the size and weight of the gyroscope also reduces its shock resistance.Especially in some high-speed motion or high-frequency vibration environment, the miniaturized gyroscope is more susceptible to external vibration, resulting in reduced measurement accuracy, and even signal distortion.How to ensure the stability and high precision of the gyroscope in the vibration environment while maintaining small size and low power consumption has become a key problem to be solved. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of miniature anti-vibration gyroscope, to solve the problem of higher sensitivity of miniaturized gyroscope to environmental interference in prior art, which is easily affected by external vibration environment, resulting in reduced detection accuracy.

[0006] To achieve the above object, the utility model adopts the technical scheme that:

[0007] Provide a kind of miniature anti-vibration gyroscope, comprising:

[0008] Assembled shell, with containing cavity, the containing cavity has the opening communicated with the outside on one side;

[0009] Sealing cover, cover is equipped in the opening of the containing cavity, and is connected to the assembled shell;

[0010] A detection assembly is arranged in the accommodating cavity, and the detection assembly comprises a packaging shell and a detection part arranged in the packaging shell; and

[0011] A damping member is sleeved or surrounded on the outer periphery of the packaging shell to relieve the vibration force received by the detection assembly.

[0012] In a possible implementation, the detection assembly comprises a detection module and a conversion module, and further comprises conductive connecting members electrically connected to the detection module and the conversion module respectively, the packaging shell is arranged outside the detection module, and the detection module has the detection part.

[0013] In a possible implementation, the conductive connecting members are flexible circuit boards, and the detection module and the conversion module are rigid members.

[0014] In a possible implementation, the detection module comprises a PCB circuit board and a chip arranged on the PCB circuit board, the chip forms the detection part, and the packaging shell comprises:

[0015] A packaging shell body has a mounting cavity with an opening communicated with the outside; and

[0016] A packaging cover plate is connected to the packaging shell body and covers the opening of the mounting cavity, the packaging cover plate is provided with a relief hole communicated with the mounting cavity, the chip is inserted into the relief hole and is in clearance fit with the relief hole.

[0017] In a possible implementation, the damping member is a ring-shaped member connected at the head and tail, and an inner edge of the damping member is provided with a connecting groove matched with the packaging shell, and the packaging shell is inserted into the connecting groove.

[0018] In a possible implementation, the damping member comprises a plurality of damping pads, the plurality of damping pads are distributed on the outer side of the packaging shell in the circumferential direction, and two adjacent damping pads are distributed in a spaced manner, the damping pad is provided with a damping groove for accommodating the packaging shell, and the side wall of the packaging shell is inserted into the damping groove.

[0019] In a possible implementation, the accommodating cavity comprises a first accommodating area, a second accommodating area and a connecting channel communicated between the first accommodating area and the second accommodating area, the first accommodating area is matched with the detection module, the second accommodating area is matched with the conversion module, and the connecting channel is matched with the conductive connecting members.

[0020] In a possible implementation, the assembly shell further has a mounting groove in communication with the accommodating cavity, the mounting groove is located at the opening of the accommodating cavity and forms a limiting step with the connecting part of the accommodating cavity, and the sealing cover is embedded in the mounting groove and abuts against the limiting step.

[0021] In a possible implementation, the assembly shell comprises an assembly body and a mounting lug connected to the assembly body, and the accommodating cavity is formed in the assembly body, and the mounting lug is used for external connection.

[0022] In a possible implementation, the assembly shell has a first fixing hole, the sealing cover has a second fixing hole matched with the first fixing hole, and a locking member is inserted into the first fixing hole and the second fixing hole.

[0023] The micro anti-vibration gyroscope has the advantages that, compared with the prior art, the micro anti-vibration gyroscope has a damping member arranged at the outer periphery of the packaging shell, and the detection assembly connected with the damping member is placed in the accommodating cavity, and the opening of the accommodating cavity is covered by the sealing cover. The detection part of the detection assembly is used for detecting the angular rate. When the assembly shell or the sealing cover is subjected to a vibration force, the damping member can buffer the vibration force received by the packaging shell, so that the detection part located in the packaging shell is not disturbed by the vibration force, and the detection accuracy is improved. The utility model not only avoids the influence of external vibration on the detection part, but also uses the packaging shell as an intermediate medium to relieve the influence of the vibration force on the detection part, avoid the influence of the connection between the detection part and the damping member on the detection sensitivity of the detection part, and improve the detection accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor.

[0025] Figure 1 The structural schematic diagram of the micro anti-vibration gyroscope provided by the embodiments of the utility model is shown in the figure.

[0026] Figure 2 The internal structure schematic diagram of the micro anti-vibration gyroscope provided by the embodiments of the utility model is shown in the figure.

[0027] Figure 3 The structural schematic diagram of the detection assembly and the damping member used in the embodiments of the utility model is shown in the figure.

[0028] Figure 4The structural schematic diagram of the detection assembly used for the embodiment of the utility model is adopted.

[0029] Figure 5 The three-dimensional structural schematic diagram of the assembled shell used for the embodiment of the utility model is adopted.

[0030] In the figure: 1, assembled shell; 101, assembly body; 102, mounting lug; 103, containing cavity; 1031, first containing area; 1032, second containing area; 1033, connecting channel; 104, mounting groove; 105, first fixing hole; 2, sealing cover; 3, detection assembly; 301, conversion module; 302, detection module; 3021, chip; 3022, PCB circuit board; 303, conductive connecting piece; 304, packaging shell; 3041, packaging shell body; 3042, packaging cover plate; 4, damping piece; 401, damping pad; 5, connector; 6, locking piece. DETAILED DESCRIPTION

[0031] In order to make the technical problems, technical solutions and beneficial effects of the utility model to be solved more clearly, the utility model is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0032] In the claims, description and above drawings of the utility model, unless otherwise explicitly limited, the terms such as "first", "second" or "third" are used only to distinguish different objects, and are not used to describe a specific order. Unless otherwise stated, the remaining orientation words, such as "vertical", "clockwise", "counterclockwise" and the like, indicate the orientation or positional relationship based on the orientation and positional relationship shown in the drawings, and are only used to facilitate the description of the utility model and simplify the description, and cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation, so it cannot be understood as limiting the specific protection scope of the utility model. In the claims, description and above drawings of the utility model, unless otherwise explicitly limited, such as the terms "fixedly connected" or "fixedly connected", should be understood broadly, that is, any connection mode between the two without displacement relationship and relative rotation relationship, that is, including non-detachable fixed connection, detachable fixed connection, integration and fixed connection through other devices or elements. In the claims, description and above drawings of the utility model, such as the terms "include", "have" and their variants, are intended to "include but not limited to".

[0033] Please see Figures 1 to 5The utility model provides a miniature anti shock gyroscope, and compared with the prior art, the utility model miniature anti shock gyroscope sets up the shock absorber 4 on the outer periphery of the encapsulation shell 304, and detection assembly 3 connected with the shock absorber 4 is put into the containing cavity 103, and the sealing cover 2 seals the opening of the containing cavity 103.The detection part of detection assembly 3 is used to detect angular rate, and after the assembly shell 1 or the sealing cover 2 is subjected to vibration force, the shock absorber 4 can buffer the vibration force that the encapsulation shell 304 is subjected to, ensures that the detection part in the encapsulation shell 304 is not disturbed by vibration force, and improves detection precision.

[0034] The utility model provides a miniature anti shock gyroscope, and compared with the prior art, the utility model miniature anti shock gyroscope sets up the shock absorber 4 on the outer periphery of the encapsulation shell 304, and detection assembly 3 connected with the shock absorber 4 is put into the containing cavity 103, and the sealing cover 2 seals the opening of the containing cavity 103.The detection part of detection assembly 3 is used to detect angular rate, and after the assembly shell 1 or the sealing cover 2 is subjected to vibration force, the shock absorber 4 can buffer the vibration force that the encapsulation shell 304 is subjected to, ensures that the detection part in the encapsulation shell 304 is not disturbed by vibration force, and improves detection precision.

[0035] Optionally, the shock absorber 4 is an elastic member, such as a rubber member or an EVA member.

[0036] Optionally, the assembly shell 1 further has a connecting opening that communicates with the containing cavity 103, and the miniature anti shock gyroscope further includes a connector 5 that is inserted into the containing cavity 103 through the connecting opening, the connector 5 is electrically connected with the detection assembly 3, and the connector 5 is used to be electrically connected with an external device.

[0037] Optionally, the assembly shell 1 further has a make room opening through which the connector 5 passes.

[0038] Optionally, the sealing cover 2 can be a whole member or can be formed by multiple cover plates that are attached to each other.

[0039] As a specific embodiment of the assembly shell 1, the assembly shell 1 includes a first assembly part and a second assembly part that are distributed at an included angle, and the containing cavity 103 is located in the first assembly part and the second assembly part. The assembly shell 304 in the embodiment can be adapted to a special-shaped mounting area, and can also increase the contact area with the mounting area, improving the reliability after being fixed.

[0040] In some embodiments, please refer to Figures 2 to 4The detection assembly 3 comprises a detection module 302 and a conversion module 301, and further comprises a conductive connecting piece 303 electrically connected to the detection module 302 and the conversion module 301 respectively, and a packaging shell 304 is arranged outside the detection module 302, and the detection module 302 has a detection part.

[0041] The detection module 302 is used for detecting an angular rate, the conversion module 301 is used for converting a detection result of the detection module 302 into an electrical signal and transmitting the electrical signal to the outside through the connector 5. In the embodiment, only the detection module 302 is arranged in the packaging shell 304, so that the vibration force acting on the detection part is alleviated, and the detection precision is improved. Compared with the scheme that the conversion module 301 and the detection module 302 are both arranged in the packaging shell 304, the size of the packaging shell 304 can be reduced, and the miniaturization of the micro anti-vibration gyroscope is realized.

[0042] In some embodiments, referring to Figures 2 to 4 The conductive connecting piece 303 is a flexible circuit board, and the detection module 302 and the conversion module 301 are both rigid members.

[0043] In the embodiment, the detection module 302 and the conversion module 301 are conductively connected through the flexible circuit board. After the flexible circuit board is subjected to a force, the flexible circuit board is deformed itself, so that the vibration force is alleviated, the vibration force is not transmitted to the detection module 302, and the influence of the external vibration environment on the detection module 302 is reduced. In addition, the rigid-flexible combination is adopted, the detection module 302 and the conversion module 301 are not connected through soldering wires, the assembly difficulty is reduced, and the problem that the volume of the entire detection assembly 3 is increased due to too many soldering wires is avoided.

[0044] Optionally, the conversion module 301 is a digital circuit rigid board.

[0045] In some embodiments, referring to Figures 2 to 4 The detection module 302 comprises a PCB circuit board 3022 and a chip 3021 arranged on the PCB circuit board 3022, the chip 3021 forms the detection part, the packaging shell 304 comprises a packaging shell body 3041 and a packaging cover plate 3042, the packaging shell body 3041 has a mounting cavity, and the mounting cavity has an opening communicated with the outside; the packaging cover plate 3042 is connected to the packaging shell body 3041 and covers the opening of the mounting cavity, the packaging cover plate 3042 is provided with a relief hole communicated with the receiving cavity 103, the chip 3021 is inserted into the relief hole and is in clearance fit with the relief hole.

[0046] The chip 3021 is used for detecting angular velocity and is fixed to the PCB circuit board 3022, which is arranged in the packaging shell 304. The packaging cover plate 3042 is connected to the packaging shell 304 and covers the opening of the mounting cavity. In the scheme in the embodiment, the PCB circuit board 3022 is not only fixedly arranged in the packaging shell 304, but also the structure of the packaging shell 304 is convenient for disassembly and assembly, which is beneficial to subsequent maintenance. The chip 3021 passes through the avoiding hole and is in gap cooperation with the avoiding hole, so as to avoid that the buffering effect of the damping member 4 causes the chip 3021 to be out of detection, and the detection sensitivity of the chip 3021 is ensured.

[0047] Optionally, the packaging shell 3041 and the packaging cover plate 3042 are clamped or screwed.

[0048] In some embodiments, not shown in the figure, the damping member 4 is a ring member connected end to end, and the inner edge of the damping member 4 is provided with a connecting groove matched with the packaging shell 304, and the packaging shell 304 is inserted into the connecting groove.

[0049] The damping member 4 covers the entire outer periphery of the packaging shell 304, and after the packaging shell 304 is arranged in the accommodating cavity 103, the vibration force between the packaging shell 304 and the assembly shell 1 and the sealing cover 2 is relieved. Since the detection module 302 is inserted into the connecting groove of the damping member 4, the reliability of the connection between the damping member 4 and the packaging shell 304 is improved, so that the two are prevented from being separated after being stressed, and it is ensured that the damping member 4 can effectively buffer the vibration force received by the packaging shell 304.

[0050] It should be noted that the inner peripheral surface of the damping member 4 is matched with the outer peripheral surface of the packaging shell 304, which can be any closed structure connected end to end, not limited to a circular ring structure, and can also be a closed polygonal structure.

[0051] In some embodiments, please refer to Figures 2 to 3 The damping member 4 includes a plurality of damping pads 401, which are distributed on the outer side of the packaging shell 304 in the circumferential direction, and two adjacent damping pads 401 are distributed at intervals. The damping pad 401 is provided with a damping groove for accommodating the packaging shell 304, and the side wall of the packaging shell 304 is inserted into the damping groove.

[0052] A plurality of damping pads 401 are arranged at intervals in the circumferential direction of the packaging shell 304, and the side wall of the packaging shell 304 is inserted into the damping groove of the damping member 4, so that the vibration force of the assembly shell 1 and the sealing cover 2 on the packaging shell 304 can be relieved. The number of damping pads 401 can be flexibly adjusted according to actual needs in the embodiment, which has a wider application range and is more convenient to install.

[0053] Optionally, the damping pad 401 is arranged at the top corner of the packaging shell 304 and is arranged one by one corresponding to the top corner of the packaging shell 304.

[0054] In some embodiments, please refer to Figure 5 The accommodating cavity 103 comprises a first accommodating area 1031, a second accommodating area 1032, and a connecting channel 1033 connecting the first accommodating area 1031 and the second accommodating area 1032, the first accommodating area 1031 is adapted to the detection module 302, the second accommodating area 1032 is adapted to the conversion module 301, and the connecting channel 1033 is adapted to the conductive connecting piece 303.

[0055] The embodiment can reduce the gap between the detection module 302, the conversion module 301, the conductive connecting piece 303, and the accommodating cavity 103, improve the stability and reliability of the connection between the detection assembly 3 and the assembly shell 1, and avoid the shaking of the detection assembly 3 in the accommodating cavity 103 to affect the detection precision.

[0056] In some embodiments, please refer to Figure 5 The assembly shell 1 is also provided with a mounting groove 104 communicating with the accommodating cavity 103, the mounting groove 104 is located at the opening of the accommodating cavity 103 and forms a limiting step with the accommodating cavity 103, and the sealing cover 2 is embedded in the mounting groove 104 and abuts against the limiting step.

[0057] The scheme in the embodiment limits the sealing cover 2 through the limiting step, not only increases the sealing performance between the sealing cover 2 and the assembly shell 1, but also avoids the protrusion of the sealing cover 2 outside the assembly shell 1, ensures the flatness of the outer surface of the assembly shell 1 after connection, and avoids interference with other components.

[0058] In some embodiments, please refer to Figure 1 and Figure 5 The assembly shell 1 comprises an assembly body 101 and a mounting lug 102 connected to the assembly body 101, the accommodating cavity 103 is provided in the assembly body 101, and the mounting lug 102 is used for connection with the outside.

[0059] The assembly body 101 is connected with the outside through the mounting lug 102 to realize fixation, avoids the opening of holes on the assembly body 101, and ensures the sealing performance of the detection assembly 3 located in the accommodating cavity 103.

[0060] Optionally, the mounting lug 102 is provided with a mounting hole, the mounting hole is adapted to a connecting hole of a mounting surface, and a fixing piece is inserted in the mounting hole and the connecting hole. The fixing piece can be a threaded piece or a clamping piece.

[0061] Optionally, the mounting lug 102 is provided with a mounting column, and the mounting column is clamped or screwed with an external connecting piece.

[0062] In some embodiments, please refer to Figure 1 The assembly shell 1 is provided with a first fixing hole 105, the sealing cover 2 is provided with a second fixing hole adapted to the first fixing hole 105, and a locking piece 6 is inserted in the first fixing hole 105 and the second fixing hole.

[0063] The locking member 6 is inserted into the first fixing hole 105 and the second fixing hole, so that the connection between the sealing cover 2 and the assembly shell 1 is realized, and the installation is convenient.

[0064] Optionally, the locking member 6 is a threaded member or a clamping member.

[0065] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A microseismic gyroscope, characterized in that The application relates to an assembly shell, a sealing cover, a detection assembly and a damping member. The detection assembly comprises a detection module and a conversion module, and further comprises conductive connecting members electrically connected to the detection module and the conversion module respectively, the detection module is arranged outside the package shell, and the detection module has the detection part. The conductive connecting members are flexible circuit boards, and the detection module and the conversion module are rigid members. The detection module comprises a PCB circuit board and a chip arranged on the PCB circuit board, the chip forms the detection part, and the package shell comprises a package shell body having a mounting cavity with an opening communicated with the outside and a package cover plate connected to the package shell body and covering the opening of the mounting cavity. The package cover plate is provided with a avoiding hole communicated with the mounting cavity, the chip is inserted into the avoiding hole and is in clearance fit with the avoiding hole. The damping member is a ring-shaped member with a first end connected to a second end, and an inner edge of the damping member is provided with a connecting groove matched with the package shell, and the package shell is inserted into the connecting groove.

2. The micro shock resistant gyroscope of claim 1, wherein, The damping member comprises a plurality of damping pads distributed on the outer side of the package shell in the circumferential direction, and two adjacent damping pads are distributed in a spaced manner, the damping pad is provided with a damping groove for accommodating the package shell, and the side wall of the package shell is inserted into the damping groove.

3. The micro shock resistant gyroscope as claimed in claim 2, wherein, The mounting cavity comprises a first accommodating area, a second accommodating area and a connecting channel connecting the first accommodating area and the second accommodating area, the first accommodating area is matched with the detection module, the second accommodating area is matched with the conversion module, and the connecting channel is matched with the conductive connecting members.

4. The micro shock resistant gyroscope as claimed in claim 2, wherein, The assembly shell is further provided with a mounting groove communicated with the mounting cavity, the mounting groove is located at the opening of the mounting cavity and forms a limiting step at the connecting position of the mounting cavity, the sealing cover is embedded in the mounting groove and abuts against the limiting step. The assembly shell comprises an assembly body and a mounting lug connected to the assembly body, the mounting cavity is arranged in the assembly body, and the mounting lug is used for being connected with the outside. The assembly shell is provided with a first fixing hole, the sealing cover is provided with a second fixing hole matched with the first fixing hole, and a locking member is inserted into the first fixing hole and the second fixing hole.

5. The micro shock resistant gyroscope as claimed in claim 1, wherein, ​ 6. The micro shock resistant gyroscope as claimed in claim 1, wherein, ​ 7. The micro shock resistant gyroscope as claimed in claim 2, wherein, ​ 8. The micro shock resistant gyroscope as claimed in claim 1, wherein, ​ 9. The micro shock resistant gyroscope as claimed in claim 1, wherein, ​ 10. The micro shock resistant gyroscope as claimed in claim 1, wherein, ​

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