Laser gyroscope sealing installation structure

Abstract

The invention discloses a laser gyroscope sealing installation structure which comprises a table body and a cover plate which are detachably connected to form a sealing shell with a sealing cavity used for installing a laser gyroscope. The laser gyroscope sealing installation structure further comprises more than one printed circuit board used for connecting and conducting an internal circuit and an external circuit of the sealing cavity, and the printed circuit board penetrates through the sealing shell and is in sealing connection with the sealing shell through sealant. The laser gyroscope sealing installation structure has the advantages of being low in cost, easy to produce and assemble, good in sealing effect and the like.

Description

Technical Field

[0001] The invention relates to the technical field of laser gyroscopes, and in particular to a sealing and mounting structure of a laser gyroscope. Background Art

[0002] Laser gyroscopes are widely used in the field of inertial navigation. To ensure their accuracy and performance, the laser gyroscopes are usually installed in a sealed housing. The sealed housing is used to connect the laser gyroscope's signal lines, power lines and other connections to external connectors. The traditional method is to directly install a pin-type electrical connector in a sealed housing. Since the electrical connector has pins, not only is it difficult to ensure the sealing of the electrical connector itself, but when the electrical connector is plugged into a pinhole-type connector, the pins are likely to become loose, affecting the sealing performance or even destroying the seal. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art and provide a laser gyroscope sealing installation structure which is low in cost, easy to produce and assemble, and has a good sealing effect.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A laser gyroscope sealed installation structure includes a platform and a cover plate, wherein the platform and the cover plate are connected in a detachable manner to form a sealed shell having a sealed cavity for installing the laser gyroscope, and the laser gyroscope sealed installation structure also includes one or more printed circuit boards for connecting and conducting the internal and external circuits of the sealed cavity, wherein the printed circuit boards penetrate the sealed shell and are sealedly connected to the sealed shell by a sealant.

[0006] As a further improvement of the above technical solution:

[0007] The platform body has a mounting cavity with an opening at one end, the cover plate is detachably connected to the platform body to enclose the sealed cavity, recesses are arranged around the edges of the open end of the platform body, the printed circuit board is accommodated and installed in the recesses and is sealed and connected to the platform body by a sealant.

[0008] An annular groove is arranged around the periphery of the opening end of the platform body, and a sealing ring pressed between the platform body and the cover plate is arranged in the annular groove.

[0009] The depth of the recess is greater than the depth of the annular groove, and the printed circuit board accommodated and installed in the recess is lower than the bottom surface of the annular groove. The sealant that seals the printed circuit board and the platform is flush with the bottom surface of the annular groove and is connected to the bottom surface of the annular groove to form an integral sealing surface.

[0010] The cover plate is connected to the platform body by a plurality of screws, and the plurality of screws are arranged at intervals along the periphery of the opening end of the platform body.

[0011] The gap between the cover plate and the platform body is sealed by sealant.

[0012] The printed circuit board comprises a board body, wherein the board body is provided with more than one inner connection point located in the sealed cavity and more than one outer connection point located outside the sealed cavity.

[0013] One or more connecting bosses are arranged on the outer wall of the platform body, and the printed circuit board is connected and fixed to the connecting bosses in a detachable manner through fasteners.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] The laser gyroscope sealing installation structure of the present invention adopts a printed circuit board to connect the internal and external circuits of the sealing cavity. The printed circuit board runs through the sealing shell and is sealed and connected to the sealing shell through a sealant. This structure and method of using a printed circuit board in the form of a whole board structure in combination with a sealant for sealing installation not only makes it easy to ensure the overall sealing of the laser gyroscope sealing installation structure after installation, but also the printed circuit board does not have loose structures such as pins, and the sealing will not be affected during the connection and disassembly process. It has a good sealing effect and, compared with traditional technologies, has the advantages of low cost and easy production and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the laser gyroscope sealing installation structure.

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the laser gyroscope sealing installation structure after the cover plate is removed.

[0018] Figure 3 for Figure 2 Enlarged structural diagram at A in the middle.

[0019] Legend:

[0020] 1. platform; 11. notch; 12. annular groove; 121. bottom surface; 13. connecting boss; 2. cover plate; 3. sealing cavity; 4. printed circuit board; 41. internal connection point; 42. external connection point. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] like Figures 1 to 3As shown, the laser gyro sealing installation structure of this embodiment includes a platform 1 and a cover plate 2, and the platform 1 and the cover plate 2 are connected in a detachable manner to form a sealed housing with a sealed cavity 3 for installing the laser gyro. The laser gyro sealing installation structure also includes one or more printed circuit boards 4 for connecting the internal and external circuits of the sealed cavity 3, and the printed circuit board 4 runs through the sealed housing and is sealed and connected to the sealed housing through a sealant. The laser gyro sealing installation structure uses a printed circuit board 4 to connect the internal and external circuits of the sealed cavity 3, and the printed circuit board 4 runs through the sealed housing and is sealed and connected to the sealed housing through a sealant. This structure and method of using a printed circuit board 4 in the form of a whole plate structure and sealing and installing in combination with a sealant not only makes it easy to ensure the overall sealing of the laser gyro sealing installation structure after installation, but also the printed circuit board 4 does not have a loose structure such as pins, and the sealing will not be affected during the connection and removal of the connection. It has a good sealing effect and has the advantages of low cost and easy production and assembly compared with traditional technologies.

[0023] In this embodiment, the platform 1 has a mounting cavity with one end open, the cover plate 2 is detachably connected to the platform 1 to enclose a sealed cavity 3, a notch 11 is provided on the edges of the four sides of the open end of the platform 1, and the printed circuit board 4 is accommodated and installed in the notch 11 and is sealed and connected to the platform 1 through a sealant. The cover plate 2 is detachable, which is convenient for loading and unloading and maintenance of the laser gyro in the sealed cavity 3. During production and assembly, it is only necessary to provide the notch 11 on the edges of the four sides of the open end of the platform 1, accommodate and install the printed circuit board 4 in the notch 11, and then use the sealant to connect and seal the printed circuit board 4 with the platform 1. The production and assembly are simple, the cost is low, and it is easy to ensure the sealing.

[0024] In this embodiment, two printed circuit boards 4 are specifically provided. In other embodiments, other numbers of printed circuit boards 4 may be provided as required. The installation position of the printed circuit boards 4 may be provided at any suitable position around the edge of the opening end of the platform 1 .

[0025] In this embodiment, an annular groove 12 is provided around the periphery of the opening end of the platform 1. A sealing ring (not shown in the figure) pressed between the platform 1 and the cover plate 2 is installed in the annular groove 12 to improve the sealing performance and facilitate assembly.

[0026] In this embodiment, the depth of the recess 11 is greater than the depth of the annular groove 12, and the printed circuit board 4 installed in the recess 11 is lower than the bottom surface 121 of the annular groove 12. The sealant that seals the printed circuit board 4 and the platform 1 is flush with the bottom surface 121 of the annular groove 12 and is connected to the bottom surface 121 of the annular groove 12 to form an integral sealing surface. During production, after the annular groove 12 is machined around the edge of the opening end of the platform 1, the recess 11 with a depth greater than the annular groove 12 is then machined, and then the printed circuit board 4 is installed in the recess 11. The printed circuit board 4 is sealed and connected to the sealed housing into a whole by using the sealant. The production is simple and convenient. Since the sealant is used to form an integral sealing surface connected to the bottom surface 121 of the annular groove 12 at the recess 11 where the printed circuit board 4 is installed, it is equivalent to not destroying the integrity of the bottom surface 121 of the annular groove 12, which can improve the sealing performance.

[0027] In this embodiment, the cover plate 2 is connected to the platform body 1 by a plurality of screws, and the plurality of screws are arranged at intervals along the edges around the opening end of the platform body 1, so that the connection is stable and reliable.

[0028] In this embodiment, the gap between the cover plate 2 and the platform 1 is sealed by a sealant, which can further improve the sealing performance.

[0029] In this embodiment, the printed circuit board 4 includes a board body, which is provided with one or more inner connection points 41 located inside the sealed cavity 3 and one or more outer connection points 42 located outside the sealed cavity 3 to facilitate the connection between the inside and outside of the sealed cavity 3.

[0030] In this embodiment, one or more connecting bosses 13 are provided on the outer wall of the platform 1, and the printed circuit board 4 is detachably connected and fixed to the connecting bosses 13 by fasteners, which can improve the installation stability of the printed circuit board 4 and avoid affecting the sealing due to vibration during operation.

[0031] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. For those skilled in the art, improvements and changes obtained without departing from the technical concept of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A sealed installation structure for a laser gyroscope, comprising a platform (1) and a cover plate (2), wherein the platform (1) and the cover plate (2) are connected in a detachable manner to form a sealed housing having a sealed cavity (3) for installing the laser gyroscope, characterized in that: The laser gyro sealing installation structure also includes one or more printed circuit boards (4) for connecting the internal and external circuits of the conductive sealing cavity (3); the printed circuit board (4) is arranged to penetrate the sealing shell and is sealed to the sealing shell by means of a sealant.

2. The laser gyro sealing and mounting structure according to claim 1, characterized in that: The platform (1) has a mounting cavity with one end open, the cover plate (2) is detachably connected to the platform (1) to enclose the sealed cavity (3), and recesses (11) are provided around the periphery of the open end of the platform (1), the printed circuit board (4) is accommodated and mounted in the recess (11) and is sealed and connected to the platform (1) via a sealant.

3. The laser gyro sealing and mounting structure according to claim 2, characterized in that: An annular groove (12) is provided around the periphery of the open end of the platform (1), and a sealing ring pressed between the platform (1) and the cover plate (2) is installed in the annular groove (12).

4. The laser gyro sealing and mounting structure according to claim 3, characterized in that: The depth of the recess (11) is greater than the depth of the annular groove (12); the printed circuit board (4) accommodated and installed in the recess (11) is lower than the bottom surface (121) of the annular groove (12); the sealant sealingly connecting the printed circuit board (4) and the platform (1) is flush with the bottom surface (121) of the annular groove (12) and connected to the bottom surface (121) of the annular groove (12) to form an integral sealing surface.

5. The laser gyro sealing and mounting structure according to claim 2, characterized in that: The cover plate (2) is connected to the platform (1) via a plurality of screws, and the plurality of screws are arranged at intervals along the periphery of the opening end of the platform (1).

6. The laser gyro sealing and mounting structure according to claim 2, characterized in that: The gap between the cover plate (2) and the platform body (1) is sealed by means of a sealant.

7. The laser gyro sealing and mounting structure according to claim 1, characterized in that: The printed circuit board (4) comprises a board body, wherein the board body is provided with one or more inner connection points (41) located inside the sealed cavity (3) and one or more outer connection points (42) located outside the sealed cavity (3).

8. The laser gyro sealing and mounting structure according to any one of claims 1 to 7, characterized in that: One or more connecting bosses (13) are provided on the outer wall of the platform body (1), and the printed circuit board (4) is connected and fixed to the connecting bosses (13) in a detachable manner via fasteners.

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