Three-in-one sensor

Abstract

The utility model relates to the technical field of sensors, in particular to a three-in-one sensor, which comprises a PCB (printed circuit board) adaptive to an inner cavity of an upper shell and a lower shell adaptive to the PCB, a position sensor module on the PCB is adaptively sleeved in a position sensor module through hole of the upper shell, a pin on the PCB is adaptively sleeved in an external plug of the upper shell, and the upper shell and the lower shell are connected with each other. The fixing columns of the lower shell body penetrate through the fixing column penetrating holes of the PCB and are fixed to the upper shell fixing holes of the upper shell body in a matched mode. Compared with a traditional sensor, the three-in-one sensor has the advantages that abrasion is reduced, the service life is greatly prolonged, the structure is simple, the layout is reasonable, and use is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to a three-in-one sensor. Background Art

[0002] The "three" in the three-in-one refers to the three parameters of the engine intake system: throttle opening, intake pressure and intake temperature. The technologies of pressure sensing and temperature sensing are relatively simple and mature. When applied, only the appropriate selection and packaging design of the sensing element are required. The throttle opening refers to the angular opening of the engine intake throttle. Currently, sliding film resistors, Hall or inductance sensing are mostly used. The sliding film resistor technology is mature and the signal is not easily interfered with, but it is a contact sensor, which has the problems of easy wear, short life and complex internal structure of the sensor. Inductance or Hall is non-contact and has a long life, but it has poor anti-interference ability, complex structure and limited use.

[0003] Therefore, the applicant provides a three-in-one sensor to solve the problems of existing sensors such as complex internal structure, short life, easy wear, and inconvenient use. Utility Model Content

[0004] The utility model aims to provide a three-in-one sensor to solve the problems of easy wear, short life, complex structure, inconvenient use, etc. of the three-in-one sensor in the prior art.

[0005] In order to solve the above technical problems, the utility model provides a three-in-one sensor, including an upper shell inner cavity adapted to a PCB board, the PCB board adapted to a lower shell, a position sensor module on the PCB board adapted to be mounted in the position sensor module through-hole of the upper shell, a pin on the PCB board adapted to be mounted in an external plug of the upper shell, and a fixing column of the lower shell passes through the fixing column through-hole of the PCB board and is adapted to be fixed in the upper shell fixing hole of the upper shell.

[0006] A further improvement of the technical solution of the utility model is that the upper shell body is an open inner cavity, a position sensor module perforation is arranged in the middle, a thermistor sleeve is arranged on one side of the position sensor module perforation, an external fixing hole A is arranged on one side of the thermistor sleeve, and an external fixing hole is arranged on the side of the external fixing hole A diagonally close to the external plug.

[0007] A further improvement of the technical solution of the utility model is that: a plurality of upper shell fixing holes are arranged on the outer ring of the sensor module perforation in the inner cavity of the upper shell body opening, and a pressure sensor module sleeve is arranged on one side close to the upper shell fixing holes.

[0008] A further improvement of the technical solution of the utility model is that a thermistor, a position sensor module, a pressure sensor module, a temperature sensor, and a pin fixing column through hole are respectively installed on the PCB board body.

[0009] A further improvement of the technical solution of the utility model is that the PCB board body is a special-shaped body.

[0010] A further improvement of the technical solution of the utility model is that the lower shell body is divided into three areas, and a fixing column is fixedly arranged in each area.

[0011] A further improvement of the technical solution of the utility model is that the upper shell and the lower shell are adapted to be installed and sealed.

[0012] A further improvement of the technical solution of the utility model is that a plurality of pads are further provided on the PCB board body.

[0013] A further improvement of the technical solution of the utility model is that the thermistor, the position sensor module and the pressure sensor module on the PCB board are respectively adapted to be installed in the thermistor sleeve, the position sensor module perforation and the pressure sensor module sleeve.

[0014] A further improvement of the technical solution of the utility model is that the pins on the PCB board are adapted to the external plug.

[0015] By adopting the above technical solution, the utility model has the following beneficial effects:

[0016] 1. The utility model provides a three-in-one sensor, which adopts a new internal chamber design to reduce signal interference and is consistent with the original sliding film resistance sensor interface to achieve seamless replacement.

[0017] 2. The utility model provides a three-in-one sensor. Compared with traditional sensors, the three-in-one sensor has the advantages of reduced wear and tear, greatly improved service life, simple structure, reasonable layout, and more convenient use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 An overall exploded view of the three-in-one sensor is provided for the utility model;

[0020] Figure 2 for Figure 1 Schematic diagram of the upper shell structure;

[0021] Figure 3 for Figure 1 Schematic diagram of the upper shell structure;

[0022] Figure 4 for Figure 1 Schematic diagram of the PCB board structure;

[0023] Figure 5 for Figure 1 Schematic diagram of the lower shell structure.

[0024] Figure markings: 1-upper shell; 2-PCB board; 3-lower shell; 11-position sensor module through hole; 12-thermistor sleeve; 13-external plug; 14-external fixing hole; 15-external fixing hole A; 16-pressure sensor module sleeve; 17-upper shell fixing hole; 21-thermistor; 22-position sensor module; 23-pressure sensor module; 24-temperature sensor; 25-pin; 26-pad; 27-fixing column through hole; 31-fixing column. DETAILED DESCRIPTION

[0025] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] The present invention will be further explained below in conjunction with specific implementation methods.

[0029] like Figure 1-5As shown, a three-in-one sensor provided in this embodiment includes an upper shell 1 whose inner cavity is adapted to a PCB board 2, the PCB board 2 is adapted to a lower shell 3, the position sensor module 22 on the PCB board 2 is adapted to be mounted in the position sensor module through hole 11 of the upper shell 1, the pin 25 on the PCB board 2 is adapted to be mounted in the external plug 13 of the upper shell 1, and the fixing column 31 of the lower shell 3 penetrates through the fixing column through hole 27 of the PCB board 2 and is adapted to be fixed in the upper shell fixing hole 17 of the upper shell 1. The upper shell 1 body is an open inner cavity, wherein a position sensor module through hole 11 is arranged in the middle, a thermistor sleeve 12 is arranged on one side of the position sensor module through hole 11, an external fixing hole A15 is arranged on one side of the thermistor sleeve 12, and an external fixing hole 14 is arranged on the side of the external fixing hole A15 diagonally close to the external plug 13. A plurality of upper shell fixing holes 17 are arranged on the outer ring of the sensor module through hole 11 in the open inner cavity of the upper shell 1 body, and a pressure sensor module sleeve 16 is arranged on the side close to the upper shell fixing hole 17. The sensor adopts a new internal chamber design to reduce signal interference and has the same interface as the original sliding film resistance sensor, achieving seamless replacement.

[0030] The sensor adopts an originally designed inner cavity of the sensor housing to assemble the shaft (not shown), PCB board, shaft cover (not shown), lower housing, sealing ring (not shown), sealing gasket (not shown) and glue potting, to ensure that the shaft can rotate flexibly without axial and radial obstruction, and to ensure the sealing and weather resistance of the pressure channel, shaft channel and glue potting cavity.

[0031] The original designed rotating shaft (not shown in the figure) and reed (not shown in the figure) are installed on the sensor housing to ensure flexible rotation without axial and radial obstruction; the outer end is connected to the engine throttle shaft and has the function of automatically eliminating the corner gap; the inner end is installed with a magnetic block so that the magnetic block and the rotating shaft move together to ensure that it is fastened and never loose.

[0032] In this embodiment, the thermistor 21, the position sensor module 22, the pressure sensor module 23, the temperature sensor 24, the pin 25 and the fixing column through hole 27 are installed on the body of the PCB board 2. The body of the PCB board 2 is a special-shaped body. The position sensor module 22 is the throttle position sensor TPS signal. The TPS signal detects the opening and the switching rate of the throttle. The signal is converted into a voltage signal and transmitted to the ECU. The ECU is a control unit. The control unit serves as the main correction signal for the injection pulse width, ignition timing, idle speed control, and exhaust gas control; it also serves as an auxiliary signal for the air flow meter. The pressure sensor MAP in the pressure sensor module 23 is an intake manifold absolute pressure sensor, which is used to measure the changes in the absolute pressure and vacuum degree in the intake manifold, and converts it into a voltage signal and transmits it to the engine electronic control unit ECU. The ECU judges the engine load based on this, and combines the speed signal to determine the injection amount.

[0033] A new electrical principle and an originally designed PCB board are used to install the angle chip, pressure chip and temperature probe, perform anti-interference processing on the power supply and signal, and realize the calibration and detection of the angle parameters.

[0034] In this embodiment, the upper shell 1 and the lower shell 3 are adapted and installed and sealed. The lower shell 3 body is divided into three areas, and a fixing column 31 is fixed in each area. The upper shell 1 and the lower shell 3 are sealed and installed, and the signal anti-interference ability is improved by redesigning the internal chamber.

[0035] In this embodiment, the PCB board 2 body is further provided with a plurality of cushion blocks 26. By providing a plurality of cushion blocks 26, the damage to components when the upper housing is adapted and installed on the PCB board is reduced, and the damage to the PCB board is further protected.

[0036] In this embodiment, the thermistor 21, the position sensor module 22 and the pressure sensor module 23 on the PCB board 2 are respectively adapted to be installed in the thermistor sleeve 12, the position sensor module through hole 11 and the pressure sensor module sleeve 16. The pin 25 on the PCB board 2 is adapted to the external plug 13. The upper housing 1 is improved to be seamlessly installed with the PCB board 2 and the lower housing 3, the wear is reduced, the service life is greatly improved, the structure is simple, the layout is reasonable, and the use is more convenient.

[0037] In the present utility model, the installation coordinates of the three-in-one sensor, the coordinates of the three signal acquisition ports, and the input, output and connector specification definitions are all determined according to the specific requirements of the specific application object, that is, different application scenarios may have different appearances and performances.

[0038] The non-contact position sensing method is adopted, a Hall angle chip is selected, and a radial permanent magnet is adapted to non-contact sensing of the change of the angle parameter. The angle chip has strong anti-electromagnetic interference ability and initialization calibration function.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A three-in-one sensor, characterized in that: The invention comprises an upper shell (1) inner cavity adapted to fit a PCB board (2), the PCB board (2) adapted to fit a lower shell (3), a position sensor module (22) on the PCB board (2) adapted to fit in a position sensor module through hole (11) of the upper shell (1), a pin (25) on the PCB board (2) adapted to fit in an external plug (13) of the upper shell (1), and a fixing column (31) of the lower shell (3) passing through a fixing column through hole (27) of the PCB board (2) adapted to fit in an upper shell fixing hole (17) of the upper shell (1).

2. A three-in-one sensor according to claim 1, characterized in that: The upper shell (1) is an open inner cavity, wherein a position sensor module through hole (11) is arranged in the middle thereof, a thermistor sleeve (12) is arranged on one side of the position sensor module through hole (11), an external fixing hole A (15) is arranged on one side of the thermistor sleeve (12), and an external fixing hole (14) is arranged on a side diagonally opposite to the external fixing hole A (15) and close to the external plug (13).

3. A three-in-one sensor according to claim 1, characterized in that: A plurality of upper shell fixing holes (17) are arranged on the outer ring of the sensor module through hole (11) in the inner cavity of the upper shell body opening, and a pressure sensor module sleeve (16) is arranged on one side close to the upper shell fixing hole (17).

4. A three-in-one sensor according to claim 1, characterized in that: The PCB board (2) body is respectively mounted with a thermistor (21), a position sensor module (22), a pressure sensor module (23), a temperature sensor (24), and a pin (25) fixing column through hole (27).

5. A three-in-one sensor according to claim 4, characterized in that: The main body of the PCB board (2) is a special-shaped body.

6. A three-in-one sensor according to claim 1, characterized in that: The main body of the lower shell (3) is divided into three areas, and a fixing column (31) is fixedly arranged in each area.

7. A three-in-one sensor according to claim 1, characterized in that: The upper shell (1) and the lower shell (3) are adapted to be installed and sealed.

8. The three-in-one sensor according to claim 1, characterized in that: The PCB board (2) body is also provided with a plurality of cushion blocks (26).

9. A three-in-one sensor according to claim 4, characterized in that: The thermistor (21), the position sensor module (22) and the pressure sensor module (23) on the PCB board (2) are respectively adapted to be installed in the thermistor sleeve (12), the position sensor module perforation (11) and the pressure sensor module sleeve (16).

10. A three-in-one sensor according to claim 4, characterized in that: The pins (25) on the PCB board (2) are adapted to fit the external plug (13).

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