Automatic alarm sensor for engine oil pressure detection

Abstract

The invention discloses an automatic alarm sensor for engine oil pressure detection, which comprises a main body, the main body comprises a sensor shell, and the two ends of the sensor shell are respectively provided with an opening for inputting / outputting oil; the oil pressure detector is arranged in the main body and is used for detecting the fluctuation of the input / output oil pressure at the two ends; the selector is used for selectively starting the oil pressure detector, one end of the sensor shell is provided with a first connector, and the end, away from the first connector, of the sensor shell is provided with a second connector. The oil pressure detector is arranged in the main body, and when oil is input into the two ends of the oil pressure detector and the pressure of the oil is detected, the change of an electric signal of the pressure of the oil can be checked through the contact assembly, the conduction cylinder, the induction assembly and the Wheatstone resistor in the detector; and the two ends can be used as input / output ends for conduction detection in the inspection process.

Description

Technical Field

[0001] The invention relates to the technical field of engine oil pressure detection, in particular to an automatic alarm sensor for engine oil pressure detection. Background Art

[0002] An oil pressure sensor is a device used to measure the pressure of a liquid or oil. It converts the actual oil pressure into an electrical signal for monitoring and control. It is commonly used in automobiles and industrial equipment to ensure that the system operates within a safe pressure range.

[0003] The patent with publication number CN206386168U discloses an oil pressure sensor, which specifically discloses that "the utility model discloses an oil pressure sensor, including a sensor body, a high-pressure cylinder is installed on the top of the sensor body, and the high-pressure cylinder is bonded to the sensor body by strong glue, a thermometer is installed on one side of the high-pressure cylinder, and the thermometer is fixedly connected to the high-pressure cylinder through the sensor body, a microcomputer is provided at the bottom of the thermometer, an air switch is installed on one side of the microcomputer, and the air switch is electrically connected to the microcomputer, and a safety alarm and a Robert pump body are provided at the bottom of the air switch" The technical solution realizes "Combining the technology of the Robert pump body and the microcomputer, in many cases, with only a slight change, the liquid level sensor and the oil pressure sensor can be used interchangeably. With the development of technology and changes in the use environment, the division of labor between the liquid level sensor and the oil pressure sensor will become more and more detailed, and they will also do their best."

[0004] However, in actual use, the device uses the Wheatstone resistor principle to operate the oil pressure sensor. In fact, compared with the working effect of the traditional Wheatstone resistor, the application range of the device is limited.

[0005] Therefore, the patent with publication number CN203809661U discloses an oil pressure sensor, which specifically discloses that "the utility model is applicable to the technical field of transmission, and discloses an oil pressure sensor, including a body and a pressure diaphragm, the upper end of the body is connected to a connector, the pressure diaphragm is arranged inside the body, one side of the pressure diaphragm is in contact with the lubricating oil inside the transmission, and the other side of the pressure diaphragm is connected to the connector, a compression sleeve is provided inside the body, the compression sleeve is threadedly connected to the inner wall of the body, a protruding compression ring is provided on the upper part of the compression sleeve, a sealing gasket is provided inside the compression sleeve, and the pressure diaphragm is arranged between the sealing gasket and the compression ring" The technical scheme realizes the technical effect of "the oil pressure sensor provided by the utility model has a simple structure, is easy to assemble, has excellent sealing performance, and has a long service life. It can effectively reduce the impact of external vibration on the transmission, and enhance the measurement accuracy of the oil pressure sensor, improve the utilization efficiency of the transmission, thereby facilitating the improvement of the comprehensive performance and market competitiveness of the transmission".

[0006] However, in actual use, this patent can only perform a single-contact oil pressure change test from one port, resulting in the device being unable to effectively meet the oil pressure test requirements of multi-cylinder engines in actual use, and there is room for improvement. Summary of the invention

[0007] The object of the present invention is to provide an automatic alarm sensor for detecting engine oil pressure to solve the problems raised in the above-mentioned background technology.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic alarm sensor for detecting engine oil pressure, comprising a main body, the main body comprising a sensor housing, both ends of the sensor housing are provided with openings for oil input / output; an oil pressure detector, the oil pressure detector is arranged in the main body and is used for detecting fluctuations in oil pressure input / output at both ends; and a selector, the selector is used to selectively open the oil pressure detector.

[0009] As a further solution of the present invention: an automatic alarm sensor for detecting engine oil pressure, wherein one end of the sensor housing is provided with interface 1, and the end of the sensor housing away from interface 1 is provided with interface 2, and interface 1 or interface 2 can be cooperated as an oil input / output end and an opening for oil pressure detection.

[0010] As a further solution of the present invention: an automatic alarm sensor for detecting engine oil pressure, the oil pressure detector includes a contact component, a conductive tube and a sensing component, a Wheatstone resistor for detecting oil piezoelectric fluctuations is arranged inside the contact component, and the sensing component is electrically connected to the Wheatstone resistor.

[0011] As a further solution of the present invention: an automatic alarm sensor for detecting engine oil pressure, the selector includes a switch assembly, the switch assembly includes a switch shell, a switch rod, a contact head and a cone clamp, the inside of the switch shell is fixedly connected with a spring, one side of the switch rod is fixedly connected with a screw cover, the screw cover is screwed to the switch shell, the cone clamp is fixedly installed on the outside of the switch rod, and the cone clamp is movably connected to the spring.

[0012] As a further solution of the present invention: an automatic alarm sensor for detecting engine oil pressure, the outer side of the interface 1 is provided with a tight-fitting threaded port, the inner annular array of the tight-fitting threaded port is provided with tight-fitting components, and the tight-fitting threaded port is in contact with the connected object through the tight-fitting component.

[0013] As a further solution of the present invention: an automatic alarm sensor for detecting engine oil pressure, the contact assembly includes a contact plate, a guide rod and a guide plate, the contact plate and the contact assembly are fixedly connected to Wheatstone resistors on one side opposite to the contact plate, two groups of the Wheatstone resistors are matched, the contact plate is arranged inside the contact assembly and is movably connected to the contact assembly, one end of the guide rod is fixedly connected to the contact plate, and the other end is fixedly connected to the guide plate, and the guide plate is movably connected to the conductive tube.

[0014] As a further solution of the present invention: an automatic alarm sensor for detecting engine oil pressure, the close-connection component includes a ball head, an expansion base, an expansion sheet, a spring, a spring seat and a screw plate, one end of the expansion base is fixedly connected to the ball head, and the other end is fixedly connected to the expansion sheet, one end of the spring is embedded in the expansion sheet and fixedly connected to the expansion base, and the other end is fixedly connected to the spring seat, one end of the spring seat away from the spring is fixedly connected to the screw plate, a movable opening and a screw interface are provided inside the close-connection screw port, the screw plate is screwed into the screw interface, and the ball head, expansion base, expansion sheet, spring and spring seat are all compatible with the movable opening.

[0015] As a further solution of the present invention: an automatic alarm sensor for detecting engine oil pressure, wherein one end of the switch rod away from the screw plate is fixedly connected with a contact head, and the contact head is movably connected to the conductive tube.

[0016] As a further solution of the present invention: an automatic alarm sensor for detecting engine oil pressure, the Wheatstone resistor annular array is distributed on one side of the contact component or the contact plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. By arranging an oil pressure detector inside the main body, when oil is input to both ends of the oil pressure detector and the oil pressure is detected, the change of the oil pressure electrical signal can be checked through the contact component, conduction tube, induction component and Wheatstone resistor in the detector, and both ends can be used as input / output ends for conduction detection during the inspection process.

[0019] 2. Through the setting of the selector, a spring is fixedly connected inside the switch shell in the selector, a screw cover is fixedly connected to one side of the switch rod, the screw cover is screwed to the switch shell, the cone clamp is fixedly installed on the outside of the switch rod and the cone clamp is movably connected to the spring. Therefore, after the switch shell contacts the conductive tube, the microcurrent conducted in the oil can be guided to the screw cover, so that the induction component will not feel the current change on this side, so that the port can be selected to work according to the requirements of the working scene, and the selectivity is good when used.

[0020] 3. One end of the expansion base is fixedly connected to the ball head, and the other end is fixedly connected to the expansion sheet. One end of the spring is embedded in the expansion sheet and fixedly connected to the expansion base, and the other end is fixedly connected to the spring seat. The end of the spring seat away from the spring is fixedly connected to the screw plate. A movable port and a screw interface are opened inside the screw mouth. The screw plate and the screw interface are screwed together. The ball head, expansion base, expansion sheet, spring and spring seat are all compatible with the movable port. Therefore, when the screw mouth is tightened, it can be tightened through the tight assembly to prevent the sensor from falling off during use; BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is one of the schematic diagrams of the overall structure of an automatic alarm sensor for detecting engine oil pressure of the present invention;

[0022] Figure 2 This is a second schematic diagram of the overall structure of an automatic alarm sensor for detecting engine oil pressure according to the present invention;

[0023] Figure 3 It is a structural schematic diagram of an oil pressure detector in an automatic alarm sensor for detecting engine oil pressure of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the components in an automatic alarm sensor for detecting engine oil pressure of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of a switch assembly in an automatic alarm sensor for detecting engine oil pressure according to the present invention;

[0026] Figure 6 It is a structural schematic diagram of a screw port in an automatic alarm sensor for detecting engine oil pressure of the present invention;

[0027] In the figure: 1. sensor housing; 2. interface 1; 3. interface 2; 4. close-connecting screw port; 41. movable port; 42. screw interface; 5. contact assembly; 51. contact plate; 52. guide rod; 53. guide plate; 6. conduction tube; 7. induction assembly; 8. switch assembly; 81. switch housing; 82. switch rod; 83. contact head; 84. cone clamp; 85. spring piece; 86. screw cover; 9. close-connecting assembly; 91. ball head; 92. expansion base; 93. expansion piece; 94. spring; 95. spring seat; 96. screw plate; 10. Wheatstone resistor. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" 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 directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of an embodiment of the present invention based on the overall structure of the present invention.

[0030] See also Figures 1 to 6In an embodiment of the present invention, an automatic alarm sensor for detecting engine oil pressure includes a main body, the main body includes a sensor housing 1, and both ends of the sensor housing 1 are provided with openings for inputting / outputting oil liquid; an oil pressure detector, the oil pressure detector is arranged in the main body and is used for detecting fluctuations of inputting / outputting oil pressure at both ends, the oil pressure detector includes a contact component 5, a conductive cylinder 6 and a sensing component 7, the interior of the contact component 5 is provided with a Wheatstone resistor 10 for detecting oil piezoelectric fluctuations, and the sensing component 7 is electrically connected to the Wheatstone resistor 10; and a selector, the selector is selectively opened for the oil pressure detector, the selector includes a switch component 8, the switch component 8 includes a switch housing 81, a switch rod 82, a contact head 83 and a cone clamp 84, a spring piece 85 is fixedly connected to the interior of the switch housing 81, a screw cover 86 is fixedly connected to one side of the switch rod 82, the screw cover 86 is screwed to the switch housing 81, the cone clamp 84 is fixedly installed on the outside of the switch rod 82, and the cone clamp 84 is movably connected to the spring piece 85.

[0031] By arranging an oil pressure detector inside the main body, when oil is input into the two ends of the oil pressure detector and the oil pressure is detected, the change of the oil pressure electrical signal can be checked through the contact component 5, the conductive tube 6, the inductive component 7 and the Wheatstone resistor 10 in the detector, and during the inspection process, both ends can be used as input / output ends for conduction detection.

[0032] At the same time, through the setting of the selector, the switch shell 81 in the selector is fixedly connected with a spring 85, one side of the switch rod 82 is fixedly connected with a screw cover 86, the screw cover 86 is screwed to the switch shell 81, and the cone clamp 84 is fixedly installed on the outside of the switch rod 82 and the cone clamp 84 is movably connected to the spring 85. Therefore, after the switch shell 81 contacts the conductive tube 6, the microcurrent conducted in the oil can be guided to the screw cover 86, so that the induction component 7 will not feel the current change on this side, so that the port can be selected to work according to the requirements of the working scene, and the selectivity is good when used.

[0033] As a further solution of the present invention: an automatic alarm sensor for detecting engine oil pressure, wherein one end of the sensor housing 1 is provided with an interface 2, and the end of the sensor housing 1 away from the interface 2 is provided with an interface 2 3, and the interface 1 2 or the interface 2 3 can be cooperated as an oil input / output end and an opening for oil pressure detection.

[0034] As a further solution of the present invention: an automatic alarm sensor for detecting engine oil pressure, the oil pressure detector includes a contact component 5, a conductive tube 6 and a sensing component 7, a Wheatstone resistor 10 for detecting oil piezoelectric fluctuations is arranged inside the contact component 5, and the sensing component 7 is electrically connected to the Wheatstone resistor 10.

[0035] As a further solution of the present invention: an automatic alarm sensor for detecting engine oil pressure, the selector includes a switch assembly 8, the switch assembly 8 includes a switch housing 81, a switch rod 82, a contact head 83 and a cone clamp 84, the interior of the switch housing 81 is fixedly connected with a spring 85, one side of the switch rod 82 is fixedly connected with a screw cover 86, the screw cover 86 is screwed to the switch housing 81, the cone clamp 84 is fixedly installed on the outside of the switch rod 82, and the cone clamp 84 is movably connected to the spring 85.

[0036] As a further solution of the present invention: an automatic alarm sensor for detecting engine oil pressure, the outer side of the interface 2 is provided with a tight-fitting threaded port 4, the inner annular array of the tight-fitting threaded port 4 is distributed with tight-fitting components 9, and the tight-fitting threaded port 4 is connected to the connected object through the tight-fitting component 9.

[0037] As a further solution of the present invention: an automatic alarm sensor for detecting engine oil pressure, the contact component 5 includes a contact plate 51, a guide rod 52 and a guide plate 53, the contact plate 51 and the contact component 5 have opposite sides fixedly connected with Wheatstone resistors 10, two groups of the Wheatstone resistors 10 are adapted to each other, the contact plate 51 is arranged inside the contact component 5 and is movably connected to the contact component 5, one end of the guide rod 52 is fixedly connected to the contact plate 51, and the other end is fixedly connected to the guide plate 53, and the guide plate 53 is movably connected to the conductive tube 6.

[0038] As a further solution of the present invention: an automatic alarm sensor for detecting engine oil pressure, the close-connection component 9 includes a ball head 91, an expansion base 92, an expansion sheet 93, a spring 94, a spring seat 95 and a screw plate 96, one end of the expansion base 92 is fixedly connected to the ball head 91, and the other end is fixedly connected to the expansion sheet 93, one end of the spring 94 is embedded in the expansion sheet 93 and fixedly connected to the expansion base 92, and the other end is fixedly connected to the spring seat 95, one end of the spring seat 95 away from the spring 94 is fixedly connected to the screw plate 96, the interior of the close-connection screw port 4 is provided with a movable port 41 and a screw interface 42, the screw plate 96 is screwed together with the screw interface 42, and the ball head 91, the expansion base 92, the expansion sheet 93, the spring 94 and the spring seat 95 are all adapted to the movable port 41.

[0039] One end of the expansion base 92 is fixedly connected to the ball head 91, and the other end is fixedly connected to the expansion sheet 93. One end of the spring 94 is embedded in the expansion sheet 93 and fixedly connected to the expansion base 92, and the other end is fixedly connected to the spring seat 95. The end of the spring seat 95 away from the spring 94 is fixedly connected to the screw plate 96. A movable opening 41 and a screw interface 42 are provided inside the screw mouth 4. The screw plate 96 is screwed together with the screw interface 42. The ball head 91, the expansion base 92, the expansion sheet 93, the spring 94 and the spring seat 95 are all compatible with the movable opening 41. Therefore, when the screw mouth 4 is tightened, it can be tightened through the tight-fitting component 9 to prevent the sensor from falling off during use.

[0040] As a further solution of the present invention: an automatic alarm sensor for detecting engine oil pressure, the end of the switch rod 82 away from the screw plate 96 is fixedly connected to a contact head 83, and the contact head 83 is movably connected to the conductive tube 6.

[0041] As a further solution of the present invention: an automatic alarm sensor for detecting engine oil pressure, the Wheatstone resistor 10 is distributed in a ring array on one side of the contact component 5 or the contact plate 51.

[0042] The working principle of the present invention is: by arranging an oil pressure detector inside the main body, when oil is input into the two ends of the oil pressure detector and the oil pressure is detected, the change of the oil pressure electrical signal can be checked through the contact component 5, the conductive tube 6, the inductive component 7 and the Wheatstone resistor 10 in the detector, and during the inspection process, both ends can be used as input / output ends for conduction detection.

[0043] Through the setting of the selector, the switch shell 81 in the selector is fixedly connected with a spring 85, one side of the switch rod 82 is fixedly connected with a screw cover 86, the screw cover 86 is screwed to the switch shell 81, and the cone clamp 84 is fixedly installed on the outside of the switch rod 82 and the cone clamp 84 is movably connected to the spring 85. Therefore, after the switch shell 81 contacts the conductive tube 6, the microcurrent conducted in the oil can be guided to the screw cover 86, so that the induction component 7 will not feel the current change on this side, so that the port can be selected to work according to the requirements of the working scene, and the selectivity is good when used.

[0044] One end of the expansion base 92 is fixedly connected to the ball head 91, and the other end is fixedly connected to the expansion sheet 93. One end of the spring 94 is embedded in the expansion sheet 93 and fixedly connected to the expansion base 92, and the other end is fixedly connected to the spring seat 95. The end of the spring seat 95 away from the spring 94 is fixedly connected to the screw plate 96. A movable opening 41 and a screw interface 42 are provided inside the screw mouth 4. The screw plate 96 is screwed together with the screw interface 42. The ball head 91, the expansion base 92, the expansion sheet 93, the spring 94 and the spring seat 95 are all compatible with the movable opening 41. Therefore, when the screw mouth 4 is tightened, it can be tightened through the tight-fitting component 9 to prevent the sensor from falling off during use.

[0045] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic alarm sensor for detecting engine oil pressure, characterized in that: The main body comprises a sensor housing (1), and both ends of the sensor housing (1) are provided with openings for inputting / outputting oil liquid; An oil pressure detector, which is arranged in the main body and is used for detecting fluctuations of input / output oil pressure at both ends; as well as A selector is provided to selectively open the oil pressure detector.

2. An automatic alarm sensor for detecting engine oil pressure according to claim 1, characterized in that: One end of the sensor housing (1) is provided with an interface 1 (2), and an end of the sensor housing (1) away from the interface 1 (2) is provided with an interface 2 (3). The interface 1 (2) or the interface 2 (3) can be used as an oil input / output end and an opening for oil pressure detection.

3. An automatic alarm sensor for detecting engine oil pressure according to claim 2, characterized in that: The oil pressure detector comprises a contact component (5), a conductive tube (6) and a sensing component (7); a Wheatstone resistor (10) for detecting oil piezoelectric fluctuations is arranged inside the contact component (5); and the sensing component (7) is electrically connected to the Wheatstone resistor (10).

4. The automatic alarm sensor for detecting engine oil pressure according to claim 3, characterized in that: The selector comprises a switch assembly (8), the switch assembly (8) comprising a switch housing (81), a switch rod (82), a contact head (83) and a cone clamp (84); a spring sheet (85) is fixedly connected inside the switch housing (81); a screw cover (86) is fixedly connected to one side of the switch rod (82); the screw cover (86) is screwed to the switch housing (81); the cone clamp (84) is fixedly mounted on the outside of the switch rod (82); and the cone clamp (84) is movably connected to the spring sheet (85).

5. The automatic alarm sensor for detecting engine oil pressure according to claim 4, characterized in that: The outer side of the interface 1 (2) is sleeved with a fastening threaded port (4), and the inner annular array of the fastening threaded port (4) is provided with fastening components (9), and the fastening threaded port (4) is in contact with the connected object through the fastening components (9).

6. The automatic alarm sensor for detecting engine oil pressure according to claim 5, characterized in that: The contact assembly (5) comprises a contact plate (51), a guide rod (52) and a guide plate (53); the contact plate (51) and the contact assembly (5) are both fixedly connected to a Wheatstone resistor (10) on one side opposite to the other; the two groups of Wheatstone resistors (10) are matched; the contact plate (51) is arranged inside the contact assembly (5) and is movably connected to the contact assembly (5); one end of the guide rod (52) is fixedly connected to the contact plate (51) and the other end is fixedly connected to the guide plate (53); and the guide plate (53) is movably connected to the conductive cylinder (6).

7. An automatic alarm sensor for detecting engine oil pressure according to claim 6, characterized in that: The close-fitting assembly (9) comprises a ball head (91), an expansion base (92), an expansion plate (93), a spring (94), a spring seat (95) and a screw plate (96); one end of the expansion base (92) is fixedly connected to the ball head (91), and the other end is fixedly connected to the expansion plate (93); one end of the spring (94) is embedded in the expansion plate (93) and fixedly connected to the expansion base (92), and the other end is fixedly connected to the spring seat (95); one end of the spring seat (95) away from the spring (94) is fixedly connected to the screw plate (96); a movable opening (41) and a screw interface (42) are provided inside the close-fitting screw port (4); the screw plate (96) is screwedly connected to the screw interface (42); the ball head (91), the expansion base (92), the expansion plate (93), the spring (94) and the spring seat (95) are all compatible with the movable opening (41).

8. An automatic alarm sensor for detecting engine oil pressure according to claim 7, characterized in that: One end of the switch rod (82) away from the screw plate (96) is fixedly connected to a contact head (83), and the contact head (83) is movably connected to the conductive cylinder (6).

9. An automatic alarm sensor for detecting engine oil pressure according to claim 8, characterized in that: The Wheatstone resistor (10) annular array is distributed on one side of the contact component (5) or the contact plate (51).

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