CN217954474U - Full-sealed acceleration sensor - Google Patents
Full-sealed acceleration sensor Download PDFInfo
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- CN217954474U CN217954474U CN202221542439.3U CN202221542439U CN217954474U CN 217954474 U CN217954474 U CN 217954474U CN 202221542439 U CN202221542439 U CN 202221542439U CN 217954474 U CN217954474 U CN 217954474U
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Abstract
The application provides a totally enclosed acceleration sensor, includes: a first sealing structure having a first sealing space therein; the circuit board is arranged in the first sealed space; the third sealing cover is connected with one side of the first sealing structure in a sealing mode and forms a second sealing space; the gauge head is arranged in the second sealed space; one end of the first wiring terminal is connected with the circuit board, and the other end of the first wiring terminal penetrates through the first sealing structure to be electrically connected with the gauge outfit; the first wiring terminal is connected with the first sealing structure in a sealing mode; the circuit board, the gauge outfit and the first wiring terminal are always in a sealed environment, so that the stability of the sensor is improved, an additional sealing structure is not required to be added, and the simplicity of the sensor is improved.
Description
Technical Field
The application relates to the technical field of sensors, in particular to a full-sealed acceleration sensor.
Background
The quartz flexible acceleration sensor is used for initial alignment, flight attitude measurement, navigation control and oil well drilling platform measurement in various strapdown inertial navigation systems or platform system measurements in the fields of aviation, aerospace, navigation and the like.
The quartz flexible acceleration sensor consists of a meter head, a servo circuit and a circuit cover, wherein the servo circuit is arranged in the circuit cover. In the prior art, in order to protect the servo circuit from being influenced by the external environment and improve the performance of the sensor, sometimes the circuit cover adopts a full-sealing form, the meter head is also in the sealing structure, but the servo circuit in the circuit cover is connected with the meter head in a lead mode, the lead is exposed outside the circuit cover and the sealing structure, and the sealing structure for protecting the lead is additionally arranged for protecting the lead, so that the structure of the whole sensor is more complex.
Disclosure of Invention
In view of the above-mentioned drawbacks or deficiencies of the prior art, the present application aims to provide a hermetically sealed acceleration sensor comprising:
a first sealing structure having a first sealing space therein;
the circuit board is arranged in the first sealed space;
the third sealing cover is connected with one side of the first sealing structure in a sealing mode and forms a second sealing space;
the gauge head is arranged in the second sealed space;
one end of the first wiring terminal is connected with the circuit board, and the other end of the first wiring terminal penetrates through the first sealing structure to be electrically connected with the gauge outfit; the first wiring terminal is connected with the first sealing structure in a sealing mode.
According to the technical scheme provided by the embodiment of the application, the first sealing structure comprises a first sealing cover and a second sealing cover, and the first sealing cover and the second sealing cover are connected in a sealing manner; the third sealing cover is connected with the second sealing cover in a sealing mode.
According to the technical scheme that this application embodiment provided, first sealed lid with the sealed lid of second is stainless steel, and the two pass through laser welding mode sealing connection.
According to the technical scheme provided by the embodiment of the application, the third sealing cover is made of stainless steel, and the third sealing cover is connected with the first sealing cover in a sealing mode in a laser welding mode.
According to the technical scheme provided by the embodiment of the application, a first through hole is formed in the first sealing cover, the first wiring terminal penetrates through the first through hole, one end of the first wiring terminal is connected with the circuit board, and the other end of the first wiring terminal is connected with the gauge outfit; the outer wall of the first connecting terminal is hermetically connected with the inner wall of the first through hole through a glass sintering method.
According to the technical scheme provided by the embodiment of the application, the inner wall of the first sealing cover is provided with two protruding parts along the first direction, and the protruding parts are used for supporting the circuit board.
According to the technical scheme that this application embodiment provided, the sealed wall connection of lid of third has coupling assembling, coupling assembling be used for with sensor and external equipment are connected.
According to the technical scheme provided by the embodiment of the application, the sealing structure further comprises a second wiring terminal, one end of the second wiring terminal is connected with the circuit board, and the other end of the second wiring terminal penetrates through the second sealing cover to be exposed outside the first sealing structure; and the second connecting terminal is hermetically connected with the second sealing cover.
According to the technical scheme provided by the embodiment of the application, a second through hole is formed in the second sealing cover, one end of the second connecting terminal penetrates through the second through hole to be connected with the circuit board, and the outer wall of the second connecting terminal is connected with the inner wall of the second through hole in a sealing mode through a glass sintering method.
In conclusion, the application provides a totally enclosed acceleration sensor, and in the first seal structure was located to the circuit board, the gauge outfit was in by first seal structure and the sealed second seal space that forms of lid of third, through first binding post with circuit board and gauge outfit connection, circuit board, gauge outfit and first binding post were in sealed environment all the time, had improved the stability of sensor, and need not to increase extra seal structure, had improved the simplicity of sensor.
Drawings
Fig. 1 is a schematic structural diagram of a hermetically sealed acceleration sensor according to an embodiment of the present application.
The text labels in the figures are represented as:
1. a first seal structure; 11. a first sealed space; 12. can be sealed; 121. a boss portion; 13. a second sealing cover; 2. a circuit board; 3. a third sealing cover; 31. a second sealed space; 4. a gauge head; 5. a first connection terminal; 6. a connecting assembly; 7. and a second connection terminal.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
As mentioned in the background, the present application proposes, in view of the problems in the prior art, a hermetically sealed acceleration sensor comprising:
a first sealing structure 1, wherein the first sealing structure 1 is internally provided with a first sealing space 11; optionally, the first sealing structure 1 has a cylindrical shape;
the circuit board 2 is arranged in the first sealed space 11; wherein, a servo circuit is integrated on the circuit board 2, and the shape of the servo circuit is a cylinder;
a third sealing cover 3, wherein the third sealing cover 3 is connected with one side of the first sealing structure 1 in a sealing way, and forms a second sealing space 31; optionally, the third sealing cover 3 is cylindrical, and has an opening at the top end, and the first sealing structure 1 is connected with the third sealing cover 3 in a sealing manner at the opening;
the gauge outfit 4 is arranged in the second sealed space 31;
one end of the first wiring terminal 5 is connected with the circuit board 2, and the other end of the first wiring terminal 5 penetrates through the first sealing structure 1 and is electrically connected with the gauge outfit 4; the first connecting terminal 5 is connected with the first sealing structure 1 in a sealing manner; optionally, first binding post 5 is the terminal, the material of terminal is stainless steel, through first binding post 5 will circuit board 2 with gauge outfit 4 is connected, circuit board 2 gauge outfit 4 with first binding post 5 is in sealed environment all the time, has improved the stability of sensor, and need not to increase extra seal structure, has improved the simplicity of sensor.
Further, the first sealing structure 1 comprises a first sealing cover 12 and a second sealing cover 13, wherein the first sealing cover 12 and the second sealing cover 13 are connected in a sealing manner; the third sealing cover 3 is connected with the first sealing cover 12 in a sealing way; during assembly, the circuit board 2 is fixed in the first sealing space 11, and then the second sealing cover 13 is hermetically connected with the first sealing cover 12.
Further, the first sealing cover 12 and the second sealing cover 13 are made of stainless steel, and are hermetically connected in a laser welding manner; the third sealing cover 3 is made of stainless steel, and the third sealing cover 3 is hermetically connected with the first sealing cover 12 in a laser welding manner; laser welding is an efficient and precise welding method using a laser beam with high energy density as a heat source, and has the advantages of high safety, smooth appearance and strong sealing property.
Furthermore, a first through hole is formed in the first sealing cover 12, the first connecting terminal 5 penetrates through the first through hole, one end of the first connecting terminal is connected with the circuit board 2, and the other end of the first connecting terminal is connected with the gauge outfit 4; the outer wall of the first wiring terminal 5 is hermetically connected with the inner wall of the first through hole by a glass sintering method; the first connecting terminal 5 is a stainless steel connecting terminal, is a cylinder, has a length direction perpendicular to the first sealing cover 12, has one end welded to the circuit board 2, and has the other end connected to the gauge outfit 4 through a wire.
Further, the inner wall of the first sealing cover 12 is provided with two protrusions 121 along a first direction, and the protrusions 121 are used for supporting the circuit board 2; the first direction is a horizontal direction and is a diameter direction of the first sealing space 11, a groove is formed in a position, corresponding to the protruding portion 121 of the first sealing cover 12, on the inner wall of the second sealing cover 13, and a space for accommodating an end portion of the circuit board 2 is formed between the groove and the protruding portion 121.
Further, a connecting assembly 6 is connected to the outer wall of the third sealing cover 3, and the connecting assembly 6 is used for connecting the sensor with external equipment; specifically, a connecting block is arranged outside the third sealing cover 3, a through hole is formed in the connecting block, and external equipment can be fixedly connected with the whole sensor through the through hole through a bolt.
Further, the sealing structure further comprises a second connecting terminal 7, one end of the second connecting terminal 7 is connected with the circuit board 2, and the other end of the second connecting terminal 7 passes through the second sealing cover 13 and is exposed outside the first sealing structure 1; the second connecting terminal 7 is connected with the second sealing cover 13 in a sealing manner; the second connecting terminal 7 is connected with a power supply device at the end away from the first sealing structure 1, and is used for supplying power to the sensor; the second connecting terminal 7 and the first connecting terminal 5 are made of the same material and have the same shape.
Furthermore, a second through hole is formed in the second sealing cover 13, one end of the second wiring terminal 7 penetrates through the second through hole to be connected with the circuit board 2, and the outer wall of the second wiring terminal 7 is hermetically connected with the inner wall of the second through hole through a glass sintering method; all joints are sealed, so that the sealing performance of the whole sensor is improved.
The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. The foregoing is only a preferred embodiment of the present application, and it should be noted that there are no specific structures which are objectively limitless due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes can be made without departing from the principle of the present invention, and the technical features mentioned above can be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention in other instances, which may or may not be practiced, are intended to be within the scope of the present application.
Claims (9)
1. A hermetically sealed acceleration sensor, characterized by comprising:
a first sealing structure (1), wherein a first sealing space (11) is arranged inside the first sealing structure (1);
the circuit board (2), the said circuit board (2) locates in the said first sealed space (11);
the third sealing cover (3), the third sealing cover (3) is connected with one side of the first sealing structure (1) in a sealing way, and the third sealing cover and the first sealing structure form a second sealing space (31);
the gauge head (4), the said gauge head (4) locates in the said second sealed space (31);
one end of the first wiring terminal (5) is connected with the circuit board (2), and the other end of the first wiring terminal (5) penetrates through the first sealing structure (1) to be electrically connected with the gauge outfit (4); the first wiring terminal (5) is connected with the first sealing structure (1) in a sealing mode.
2. The hermetically sealed acceleration sensor of claim 1, characterized in that: the first sealing structure (1) comprises a first sealing cover (12) and a second sealing cover (13), and the first sealing cover (12) and the second sealing cover (13) are connected in a sealing mode; the third sealing cover (3) is connected with the first sealing cover (12) in a sealing mode.
3. The hermetically sealed acceleration sensor of claim 2, characterized in that: the first sealing cover (12) and the second sealing cover (13) are made of stainless steel materials and are hermetically connected in a laser welding mode.
4. The hermetically sealed acceleration sensor of claim 3, characterized in that: the third sealing cover (3) is made of stainless steel, and the third sealing cover (3) is connected with the first sealing cover (12) in a sealing mode in a laser welding mode.
5. The hermetically sealed acceleration sensor of claim 4, characterized in that: a first through hole is formed in the first sealing cover (12), the first wiring terminal (5) penetrates through the first through hole, one end of the first wiring terminal is connected with the circuit board (2), and the other end of the first wiring terminal is connected with the gauge outfit (4); the outer wall of the first connecting terminal (5) and the inner wall of the first through hole are hermetically connected through a glass sintering method.
6. The hermetically sealed acceleration sensor of claim 5, characterized in that: the inner wall of the first sealing cover (12) is provided with two protruding parts (121) along a first direction, and the protruding parts (121) are used for supporting the circuit board (2).
7. The hermetically sealed acceleration sensor of claim 6, characterized in that: the outer wall of the third sealing cover (3) is connected with a connecting assembly (6), and the connecting assembly (6) is used for connecting the sensor with external equipment.
8. The hermetically sealed acceleration sensor of claim 7, characterized in that: the circuit board is characterized by further comprising a second wiring terminal (7), wherein one end of the second wiring terminal (7) is connected with the circuit board (2), and the other end of the second wiring terminal (7) penetrates through the second sealing cover (13) to be exposed out of the first sealing structure (1); the second connecting terminal (7) is connected with the second sealing cover (13) in a sealing mode.
9. The hermetically sealed acceleration sensor of claim 8, characterized in that: a second through hole is formed in the second sealing cover (13), one end of the second wiring terminal (7) penetrates through the second through hole to be connected with the circuit board (2), and the outer wall of the second wiring terminal (7) is connected with the inner wall of the second through hole in a sealing mode through a glass sintering method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221542439.3U CN217954474U (en) | 2022-06-20 | 2022-06-20 | Full-sealed acceleration sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221542439.3U CN217954474U (en) | 2022-06-20 | 2022-06-20 | Full-sealed acceleration sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217954474U true CN217954474U (en) | 2022-12-02 |
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ID=84219395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221542439.3U Active CN217954474U (en) | 2022-06-20 | 2022-06-20 | Full-sealed acceleration sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217954474U (en) |
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2022
- 2022-06-20 CN CN202221542439.3U patent/CN217954474U/en active Active
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