CN214893840U - Crankcase pressure sensor - Google Patents
Crankcase pressure sensor Download PDFInfo
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- CN214893840U CN214893840U CN202121668738.7U CN202121668738U CN214893840U CN 214893840 U CN214893840 U CN 214893840U CN 202121668738 U CN202121668738 U CN 202121668738U CN 214893840 U CN214893840 U CN 214893840U
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- shell
- crankcase
- pressure sensor
- assembly
- sealing
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Abstract
The utility model discloses a crankcase pressure sensor, a shell, a crankcase connecting component, a heat radiation component and a sensor component; the shell is of a hollow cuboid structure with an opening at the upper end, a sealing assembly is arranged at the upper end of the shell, and a plug-in shell is fixedly connected to the right end of the shell; the crankcase connection assembly is located at the lower end of the shell; the advantages are that: possess corresponding heat radiation structure and radiator unit, not only can realize treating the heat dissipation that detects the inside gas of crankcase, can realize the heat dissipation to this crankcase inside, the defect of work under the long-term higher temperature of electric element on pressure chip and the PCB board has effectively been avoided, the accuracy of this crankcase pressure sensor testing result has both been guaranteed, the damage that the work caused easily under the long-term higher environment of temperature of this crankcase pressure sensor electric element has effectively been avoided again, this crankcase pressure sensor's effective life has effectively been guaranteed, be convenient for popularization and use of this product.
Description
Technical Field
The utility model relates to a pressure sensor technical field, concretely relates to crankcase pressure sensor.
Background
The pressure sensor is a device or a device which can sense a pressure signal and can convert the pressure signal into a usable output electric signal according to a certain rule, the crankshaft pressure sensor is a pressure sensor for detecting the pressure inside the crankcase, the temperature of the gas inside the crankcase is high in view of the fact that high-temperature gas inside an engine enters the crankcase in the working process, the pressure sensor needs to be in contact with the gas inside the crankcase for a long time in order to detect the gas pressure inside the crankcase, the pressure sensor can work in an environment with relatively high temperature, meanwhile, the pressure sensor also generates certain heat, and the existing pressure sensor is lack of a corresponding heat dissipation assembly inside, so that a detection element in the pressure sensor can work in the environment with relatively high temperature for a long time, and the detection accuracy of the pressure sensor can be influenced, meanwhile, when the pressure sensor works in a high-temperature environment for a long time, the detection element is easily damaged, and the effective service life of the pressure sensor is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a crankcase pressure sensor just in order to solve above-mentioned problem, have advantages such as heat dispersion is good, the testing result is more accurate, long service life, see the explanation below for the detail.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a crankcase pressure sensor, which comprises a shell, a crankcase connecting assembly, a heat dissipation assembly and a sensor assembly;
the shell is of a hollow cuboid structure with an opening at the upper end, a sealing assembly is arranged at the upper end of the shell, and a plug-in shell is fixedly connected to the right end of the shell;
the crankcase connection assembly is located at the lower end of the shell;
the heat dissipation assembly is positioned at the left end of the shell;
the sensor assembly is located inside the housing.
Preferably, the seal assembly comprises an end cover, a seal platform is arranged at the lower end of the end cover, the seal platform and the shell are installed in a matched mode inside, and external environment influence is avoided for sealing the crankcase pressure sensor.
Preferably, the crankcase coupling assembling includes the spliced pole, spliced pole and casing integrated into one piece, the upper end of spliced pole is equipped with heat radiation structure, the middle part of spliced pole is equipped with the inlet port, guarantees the inside intercommunication of this crankcase pressure sensor and crankcase, lays the foundation for the inside atmospheric pressure that detects the crankcase.
Preferably, the heat radiation structure comprises annular heat radiation grooves which are uniformly distributed, reinforcing ribs which are uniformly distributed are arranged in the annular heat radiation grooves, external threads used for being connected with a crankcase are arranged at the lower end of the connecting column, the connection between the crankcase pressure sensor and the inside of the crankcase is ensured, and a foundation is laid for the installation of the crankcase pressure sensor.
Preferably, the heat dissipation assembly comprises a snake-shaped heat exchange tube, the snake-shaped heat exchange tube is located inside the shell, one end of the snake-shaped heat exchange tube penetrates through the front end of the shell and is communicated with the pump body, the heat dissipation inside the crankcase pressure sensor is achieved through the rear end penetrated through by the other end of the snake-shaped heat exchange tube, and the crankcase pressure sensor is prevented from working in a high-temperature environment for a long time.
Preferably, the sensor assembly comprises a PCB, fixing columns are arranged at four corners of the lower end of the PCB, the lower end of each fixing column is fixedly connected with the inner bottom surface of the shell, the upper ends of the fixing columns are connected with the PCB through screws, a pressure chip is arranged at the lower end of the PCB, a sealing washer is arranged between the pressure chip and the shell, the middle of the sealing washer is communicated with the air inlet, a mounting groove corresponding to the sealing washer is formed in the shell, the sealing washer is installed in a matched mode with the mounting groove, the thickness of the sealing washer is larger than the distance from the bottom of the pressure chip to the bottom of the mounting groove, and a foundation is laid for air pressure detection of the crankcase pressure sensor.
Preferably, the right end of the pressure chip is connected with a contact pin used for transmitting signals, the right end of the contact pin penetrates through the shell and is located inside the plug-in shell, the plug-in shell protects the contact pin, the contact pin is prevented from being damaged, and meanwhile, a foundation is laid for data transmission detection of the crankcase pressure sensor.
The beneficial effects of the utility model reside in that:
possess corresponding heat radiation structure and radiator unit, not only can realize treating the heat dissipation that detects the inside gas of crankcase, can realize the heat dissipation to this crankcase inside, the defect of work under the long-term higher temperature of electric element on pressure chip and the PCB board has effectively been avoided, the accuracy of this crankcase pressure sensor testing result has both been guaranteed, the damage that the work caused easily under the long-term higher environment of temperature of this crankcase pressure sensor electric element has effectively been avoided again, this crankcase pressure sensor's effective life has effectively been guaranteed, be convenient for popularization and use of this product.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a front view of the present invention;
fig. 2 is a schematic perspective view of fig. 1 according to the present invention;
fig. 3 is a schematic sectional view of the perspective front view of fig. 1 according to the present invention;
fig. 4 is a schematic cross-sectional view of the perspective side view of fig. 1 according to the present invention.
The reference numerals are explained below:
1. a housing; 2. a seal assembly; 21. a sealing table; 22. an end cap; 3. an insert housing; 4. a crankcase connection assembly; 41. an air inlet; 42. connecting columns; 43. an annular heat dissipation groove; 44. reinforcing ribs; 5. a heat dissipating component; 51. a serpentine heat exchange tube; 52. a pump body; 6. a sensor assembly; 61. a pressure chip; 62. a PCB board; 63. inserting a pin; 64. a sealing gasket; 65 screws; 66. and (5) fixing the column.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a crankcase pressure sensor, which includes a housing 1, a crankcase connection assembly 4, a heat dissipation assembly 5 and a sensor assembly 6;
the crankcase pressure sensor is characterized in that the shell 1 is of a hollow cuboid structure with an opening at the upper end, the upper end of the shell 1 is provided with the sealing assembly 2, the sealing assembly 2 comprises an end cover 22, the lower end of the end cover 22 is provided with the sealing table 21, the sealing table 21 and the shell 1 are installed in a matched mode, and in order to seal the crankcase pressure sensor and avoid the influence of the external environment, the right end of the shell 1 is fixedly connected with the plug-in shell 3;
the crankcase connecting assembly 4 is located at the lower end of the shell 1, the crankcase connecting assembly 4 comprises a connecting column 42, the connecting column 42 and the shell 1 are integrally formed, a heat dissipation structure is arranged at the upper end of the connecting column 42 and comprises annular heat dissipation grooves 43 which are uniformly distributed, reinforcing ribs 44 which are uniformly distributed are arranged inside the annular heat dissipation grooves 43, external threads used for being connected with a crankcase are arranged at the lower end of the connecting column 42, connection between the crankcase pressure sensor and the inside of the crankcase is guaranteed, a foundation is laid for installation of the crankcase pressure sensor, an air inlet 41 is arranged in the middle of the connecting column 42, communication between the crankcase pressure sensor and the inside of the crankcase is guaranteed, and a foundation is laid for detecting internal air pressure of the crankcase;
the heat dissipation assembly 5 is positioned at the left end of the shell 1, the heat dissipation assembly 5 comprises a serpentine heat exchange tube 51, the serpentine heat exchange tube 51 is positioned inside the shell 1, one end of the serpentine heat exchange tube 51 penetrates through the front end of the shell 1 and is communicated with the pump body 52, and the rear end of the serpentine heat exchange tube 51, which penetrates through the other end, realizes heat dissipation inside the crankcase pressure sensor, and prevents the crankcase pressure sensor from working in a high-temperature environment for a long time;
the sensor assembly 6 is positioned inside the shell 1, the sensor assembly 6 comprises a PCB 62, four corners of the lower end of the PCB 62 are respectively provided with a fixing column 66, the lower end of the fixing column 66 is fixedly connected with the inner bottom surface of the shell 1, the upper end of the fixing column 66 is connected with the PCB 62 through a screw 65, the lower end of the PCB 62 is provided with a pressure chip 61, a sealing gasket 64 is arranged between the pressure chip 61 and the shell 1, the middle part of the sealing gasket 64 is communicated with the air inlet 41, the shell 1 is provided with a mounting groove corresponding to the sealing gasket 64, the sealing gasket 64 is matched with the mounting groove, the thickness of the sealing gasket 64 is larger than the distance from the bottom of the pressure chip 61 to the bottom end of the mounting groove, a foundation is laid for air pressure detection of the crankcase pressure sensor, the right end of the pressure chip 61 is connected with a contact pin 63 used for transmitting signals, and the right end of the contact pin 63 penetrates through the shell 1 and is positioned inside the plug-in shell 3, the plug-in shell 3 protects the contact pin 63, avoids the contact pin from being damaged, and lays a foundation for detection data transmission of the crankcase pressure sensor.
In one embodiment of the utility model, the crankcase pressure sensor with the structure realizes the sealing of the shell 1 through the sealing component 2 after the sensor component 6 is installed, the connection of the crankcase pressure sensor to the interior of the crankcase to be tested is then effected by means of an external thread on the connecting stud 42 in the crankcase connection assembly 4, then, the gas in the crankcase is contacted with the pressure chip 61 through the air inlet 41 and the middle part of the sealing washer 64, the pressure chip 61 detects the gas pressure in the crankcase, in the process, the wall thickness of the position of the connecting column 42 provided with the annular heat dissipation groove 43 is smaller, so that the heat dissipation of the gas in the crankcase is convenient to realize, the pump body 52 works to ensure the flow of the gas in the serpentine heat exchange tube 51, thereby realize 1 inside heat transfer of casing, avoid 1 inside high temperatures of casing, further realized the operation of cooling to crankcase pressure sensor.
It should be noted that, after the end cap 22 is installed, the end cap is sealed by using a rubber body;
the utility model discloses well pump body 52 work controller on accessible PCB board 62 controls, and the work of controller control pump body 52 adopts prior art.
The crankcase pressure sensor of the embodiment has the following advantages:
possess corresponding heat radiation structure and radiator unit 5, not only can realize treating the heat dissipation that detects the inside gaseous of crankcase, can realize the heat dissipation to this crankcase inside, the defect of work under the electrical component is in higher temperature for a long time on pressure chip 61 and the PCB board 62 has effectively been avoided, the accuracy of this crankcase pressure sensor testing result has both been guaranteed, the damage that this crankcase pressure sensor electrical component is in the easy work of work under the higher environment of temperature for a long time has effectively been avoided again, this crankcase pressure sensor's effective life has effectively been guaranteed, be convenient for the popularization and the use of this product.
The above embodiments are only specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention, and all should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A crankcase pressure sensor, characterized in that: the crankcase comprises a shell (1), a crankcase connecting assembly (4), a heat dissipation assembly (5) and a sensor assembly (6);
the shell (1) is of a hollow cuboid structure with an opening at the upper end, a sealing assembly (2) is arranged at the upper end of the shell (1), and a plug-in shell (3) is fixedly connected to the right end of the shell (1);
the crankcase connecting assembly (4) is positioned at the lower end of the shell (1);
the heat dissipation assembly (5) is positioned at the left end of the shell (1);
the sensor assembly (6) is located inside the housing (1).
2. A crankcase pressure sensor according to claim 1, wherein: the sealing assembly (2) comprises an end cover (22), a sealing table (21) is arranged at the lower end of the end cover (22), and the sealing table (21) and the shell (1) are installed in a matched mode.
3. A crankcase pressure sensor according to claim 1, wherein: crankcase coupling assembling (4) is including spliced pole (42), spliced pole (42) and casing (1) integrated into one piece, the upper end of spliced pole (42) is equipped with heat radiation structure, the middle part of spliced pole (42) is equipped with inlet port (41).
4. A crankcase pressure sensor according to claim 3, wherein: the heat radiation structure comprises uniformly distributed annular heat radiation grooves (43), uniformly distributed reinforcing ribs (44) are arranged in the annular heat radiation grooves (43), and external threads used for being connected with a crankcase are arranged at the lower end of the connecting column (42).
5. A crankcase pressure sensor according to claim 1, wherein: radiating component (5) include snakelike heat exchange tube (51), snakelike heat exchange tube (51) are located the inside of casing (1), the one end of snakelike heat exchange tube (51) run through the front end of casing (1) and communicate with the pump body (52), the rear end that the other end of snakelike heat exchange tube (51) runs through.
6. A crankcase pressure sensor according to claim 1, wherein: the sensor assembly (6) comprises a PCB (printed circuit board) (62), fixing columns (66) are arranged at four corners of the lower end of the PCB (62), the lower end of each fixing column (66) is fixedly connected with the inner bottom surface of the shell (1), the upper ends of the fixing columns (66) are connected with the PCB (62) through screws (65), a pressure chip (61) is arranged at the lower end of the PCB (62), sealing gaskets (64) are arranged between the pressure chip (61) and the shell (1), the middle of each sealing gasket (64) is communicated with the air inlet hole (41), mounting grooves corresponding to the sealing gaskets (64) are formed in the shell (1), the sealing gaskets (64) are installed in a matched mode with the mounting grooves, and the thickness of each sealing gasket (64) is larger than the distance from the bottom of the pressure chip (61) to the bottom of each mounting groove.
7. A crankcase pressure sensor according to claim 6, wherein: the right end of the pressure chip (61) is connected with a contact pin (63) for transmitting signals, and the right end of the contact pin (63) penetrates through the shell (1) and is located inside the plug-in shell (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121668738.7U CN214893840U (en) | 2021-07-22 | 2021-07-22 | Crankcase pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121668738.7U CN214893840U (en) | 2021-07-22 | 2021-07-22 | Crankcase pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214893840U true CN214893840U (en) | 2021-11-26 |
Family
ID=78927152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121668738.7U Active CN214893840U (en) | 2021-07-22 | 2021-07-22 | Crankcase pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214893840U (en) |
-
2021
- 2021-07-22 CN CN202121668738.7U patent/CN214893840U/en active Active
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