CN112129286B - Integrated sealing structure for shell and connector of miniaturized micro-electromechanical inertial navigation system - Google Patents
Integrated sealing structure for shell and connector of miniaturized micro-electromechanical inertial navigation system Download PDFInfo
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- CN112129286B CN112129286B CN202010966973.6A CN202010966973A CN112129286B CN 112129286 B CN112129286 B CN 112129286B CN 202010966973 A CN202010966973 A CN 202010966973A CN 112129286 B CN112129286 B CN 112129286B
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- connector
- shell
- core body
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/10—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration
- G01C21/12—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning
- G01C21/16—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning by integrating acceleration or speed, i.e. inertial navigation
Abstract
The invention discloses an integrated sealing structure of a shell and a connector of a miniaturized micro-electromechanical inertial navigation system, wherein a core body of the connector is positioned on a system shell, and the sealing of the connector is realized. A through hole matched with the connector core body is designed on the system shell, and a limiting step is designed in the through hole to position the connector core body. Two threaded holes are designed on two sides of the through hole and used for fixing the opposite insertion connectors and controlling the opposite insertion depth of the two connectors. A U-shaped rubber ring is adhered to a circuit board interconnected with the connector, and sealant is injected into a gap between the circuit board and the structural member through a U-shaped opening to form a layer of sealant to cover the connector and the system shell, so that the connector is sealed. The top cover and the bottom shell are fixedly adhered and sealed by coating glue water on the butt joint end faces of the L shapes. The invention effectively reduces the volume and the weight of the system under the condition of realizing the sealing of the inertial navigation system.
Description
Technical Field
The invention discloses a sealing structure of a micro-electromechanical inertial navigation system, and particularly relates to a sealing structure of a miniaturized micro-electromechanical inertial navigation system.
Background
The micro-electro-mechanical inertial navigation system measures the acceleration and angular rate movement of a carrier through an MEMS accelerometer and an MEMS gyroscope, and obtains the acceleration, angular rate, attitude, position, speed and other movement information of the measured carrier through error compensation and integration. The micro-electromechanical system has the advantages of strong autonomy, small volume, light weight, low power consumption and the like, is widely applied to the military and civil fields of oil exploration, vibration monitoring, railway track detection, unmanned aerial vehicles, small guided ammunition attitude control, navigation and the like, and is in a sealed system structure for adapting to a damp and hot environment and preventing sand and dust from entering the system, and the volume and the weight of the MEMS inertial navigation system are increased due to the sealing of a system shell and the sealing connector.
Disclosure of Invention
The invention provides an integrated sealing structure of a shell and a connector of a miniaturized micro-electromechanical inertial navigation system, which effectively reduces the volume and the weight of the system under the condition of realizing the sealing of the inertial navigation system.
In order to solve the technical problems, the technical scheme of the invention adopts the following technical scheme:
the micro-electro-mechanical inertial navigation system is of a hexahedral structure and comprises a top cover, a bottom shell, a connector and a sealing circuit, and is characterized in that a connector core body is positioned on the bottom shell, and the connector is sealed; the top cover and the bottom shell are fixedly adhered and sealed by coating glue on the butt joint end face 7 of the L shape.
Furthermore, a through hole 1 matched with the connector core body is designed on the bottom shell, a limiting step 2 is designed in the through hole 1 to position the connector core body, and fixing glue 5 is coated on the limiting step 2 to fix the connector core body, so that the connector and the shell structure are integrated.
Further, two threaded holes 3 are designed on two sides of the through hole 1 and used for fixing the opposite insertion connectors and controlling the opposite insertion depth of the two connectors.
Furthermore, a U-shaped rubber ring 4 is adhered to the circuit board interconnected with the connector, and sealant is injected into a gap between the circuit board and the structural member through the U-shaped opening to form a layer of sealant to cover the connector and the system shell, so that the connector is sealed.
The invention uses the system shell to replace the connector plug-in locking structural member and the sealing structure, and can effectively reduce the volume and the weight of the micro-electromechanical inertial navigation system adopting the traditional independent sealing connector; the top cover and the bottom shell are fixedly adhered and sealed through glue, and the size of the sealing structure is smaller than that of a conventional sealing strip type sealing structure.
Drawings
FIG. 1 is a schematic view of a connector through hole and a limiting step;
FIG. 2 is a schematic view of a U-shaped rubber ring;
FIG. 3 is a top view of the bottom shell;
FIG. 4 is a bottom plan view of the top cover;
fig. 5 is a perspective view of the bottom case.
In the figure, 1, a connector through hole, 2, a connector limiting step, 3, a threaded hole, 4, a U-shaped rubber ring, 5, fixing glue, 6, a sealing glue injection position, 7, an L-shaped butt joint end face, 8, a limiting face, 9 and a glue coating area
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The invention utilizes the system shell to replace the connector opposite-insertion locking structural part and the sealing structure, and concretely realizes the following steps:
the micro-electromechanical inertial navigation system is of a hexahedral structure and comprises a top cover, a bottom shell, a connector and a sealing circuit.
A through hole 1 matched with a connector core body is designed on a system shell, a limiting step 2 is designed in the through hole 1 to position the connector core body, and fixing glue 5 is coated on the limiting step 2 to fix the connector core body, so that the connector and a shell structure are integrated. As shown in fig. 1;
two threaded holes 3 are designed on two sides of the through hole 1 and used for fixing the opposite insertion connectors and controlling the opposite insertion depth of the two connectors;
a U-shaped rubber ring 4 is designed and adhered to a circuit board interconnected with a connector, as shown in figure 2, the circuit board is adhered to a structure through a fixing glue 5, at the moment, the compression amount of the U-shaped rubber ring is about 10% -50%, as shown in figures 3 and 4, the U-shaped rubber ring has the advantages that a sealant can be injected into a gap between the circuit board and the structure through a U-shaped opening, a sealant injection position 6 is shown in figure 3, and finally a layer of sealant is formed to cover the connector and a system shell, so that the connector is sealed.
The top cover and the bottom shell are fixedly adhered and sealed by coating glue on the L-shaped butt joint end face 7, a glue coating area 9 is shown in figure 5, the size of the sealing structure is smaller than that of a conventional sealing strip type sealing structure, and a limiting face 8 is designed below the L-shaped butt joint end face 7 of the bottom shell to ensure that the top cover and other structures are not interfered.
The above embodiments are only for explaining and explaining the technical solution of the present invention, but should not be construed as limiting the scope of the claims. It should be clear to those skilled in the art that any simple modification or replacement based on the technical solution of the present invention may be adopted to obtain a new technical solution, which falls within the scope of the present invention.
Claims (1)
1. The miniature micro-electromechanical inertial navigation system shell and connector integrated sealing structure is characterized in that a connector core body is positioned on the bottom shell, and the connector is sealed; the top cover and the bottom shell are fixedly adhered and sealed by coating glue on the L-shaped butt joint end face (7);
a through hole (1) matched with the connector core body is designed on the bottom shell, a limiting step (2) is designed in the through hole (1) to position the connector core body, and fixing glue (5) is coated on the limiting step (2) to fix the connector core body, so that the connector and the shell structure are integrated;
two threaded holes (3) are designed on two sides of the through hole (1) and are used for fixing the opposite insertion connectors and controlling the opposite insertion depth of the two connectors;
a U-shaped rubber ring (4) is adhered to a circuit board which is interconnected with the connector, and sealant is injected into a gap between the circuit board and the structural member through a U-shaped opening to form a layer of sealant to cover the connector and the system shell, so that the connector is sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010966973.6A CN112129286B (en) | 2020-09-15 | 2020-09-15 | Integrated sealing structure for shell and connector of miniaturized micro-electromechanical inertial navigation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010966973.6A CN112129286B (en) | 2020-09-15 | 2020-09-15 | Integrated sealing structure for shell and connector of miniaturized micro-electromechanical inertial navigation system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112129286A CN112129286A (en) | 2020-12-25 |
| CN112129286B true CN112129286B (en) | 2022-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010966973.6A Active CN112129286B (en) | 2020-09-15 | 2020-09-15 | Integrated sealing structure for shell and connector of miniaturized micro-electromechanical inertial navigation system |
Country Status (1)
| Country | Link |
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| CN (1) | CN112129286B (en) |
Citations (11)
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| US5780771A (en) * | 1996-08-28 | 1998-07-14 | Honeywell | Hermetically sealed housing having a flex tape electrical connector |
| JP2001085858A (en) * | 1999-09-17 | 2001-03-30 | Denso Corp | Case for electronic control device |
| US7938004B1 (en) * | 2008-03-21 | 2011-05-10 | Brunsch Jr James P | Systems and methods for angular rate and position measurement |
| CN104142150A (en) * | 2014-08-08 | 2014-11-12 | 北京航天自动控制研究所 | Integrated small-size laser gyroscope inertia measurement device |
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| CN206506809U (en) * | 2016-07-15 | 2017-09-19 | 北京自动化控制设备研究所 | A kind of fixed structure of multi circuit board |
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| CN208860357U (en) * | 2017-11-10 | 2019-05-14 | 江苏和正特种装备有限公司 | High-precision inertial navigation set |
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| CN111561927A (en) * | 2020-04-20 | 2020-08-21 | 北京理工导航控制科技股份有限公司 | MEMS inertial navigation sensor component integrated device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6913493B2 (en) * | 2003-11-05 | 2005-07-05 | Molex Incorporated | Sealed electrical connector assembly and method of fabricating same |
| JP5358639B2 (en) * | 2011-09-21 | 2013-12-04 | 日立オートモティブシステムズ株式会社 | Electronic controller seal structure |
| JP5745127B1 (en) * | 2014-03-28 | 2015-07-08 | 三菱電機株式会社 | Waterproof control unit |
| US9844140B2 (en) * | 2015-03-02 | 2017-12-12 | Mitsubishi Electric Corporation | Electronic device |
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2020
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Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5780771A (en) * | 1996-08-28 | 1998-07-14 | Honeywell | Hermetically sealed housing having a flex tape electrical connector |
| JP2001085858A (en) * | 1999-09-17 | 2001-03-30 | Denso Corp | Case for electronic control device |
| US7938004B1 (en) * | 2008-03-21 | 2011-05-10 | Brunsch Jr James P | Systems and methods for angular rate and position measurement |
| CN104142150A (en) * | 2014-08-08 | 2014-11-12 | 北京航天自动控制研究所 | Integrated small-size laser gyroscope inertia measurement device |
| CN206506809U (en) * | 2016-07-15 | 2017-09-19 | 北京自动化控制设备研究所 | A kind of fixed structure of multi circuit board |
| CN206323699U (en) * | 2017-01-11 | 2017-07-11 | 大陆汽车电子(长春)有限公司 | electronic control unit with sealing structure |
| CN208860357U (en) * | 2017-11-10 | 2019-05-14 | 江苏和正特种装备有限公司 | High-precision inertial navigation set |
| CN207730219U (en) * | 2018-01-24 | 2018-08-14 | 无锡凌思科技有限公司 | A kind of automatic temperature-controlled inertial navigation structure |
| CN209961233U (en) * | 2019-07-22 | 2020-01-17 | 青岛智腾科技有限公司 | Miniature strapdown inertial navigation unit |
| CN210154589U (en) * | 2019-07-22 | 2020-03-17 | 青岛智腾科技有限公司 | Shell of miniature strapdown inertial navigation unit |
| CN111561927A (en) * | 2020-04-20 | 2020-08-21 | 北京理工导航控制科技股份有限公司 | MEMS inertial navigation sensor component integrated device |
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| Publication number | Publication date |
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| CN112129286A (en) | 2020-12-25 |
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