High-temperature-resistant magnetoelectric rotating speed sensor

Abstract

The embodiment of the utility model provides a high-temperature-resistant magnetoelectric rotating speed sensor. The high-temperature-resistant magnetoelectric rotating speed sensor comprises a plug; one end of the high-temperature-resistant framework is embedded in the plug; the high-temperature-resistant framework is provided with a containing cavity; the accommodating cavity is used for accommodating the magnetic steel, the iron core and the coil; the first sealing element is arranged on the peripheral side of the plug; the coating piece coats the other end of the high-temperature-resistant framework and the first sealing piece; wherein the first sealing piece is used for sealing a connecting gap between the plug and the wrapping piece. According to the invention, the wrapping piece wraps the other end of the high-temperature-resistant framework and the first sealing piece, so that the wrapping piece plays a structural sealing role on the first sealing piece, that is, the wrapping piece is matched with the first sealing piece, so that the sealing strength is enhanced, water vapor is prevented from invading and corroding internal parts, and the use reliability of equipment is ensured. The use performance of the sensor in a high-temperature environment can be ensured by selecting the high-temperature-resistant framework.

Description

Technical Field

[0001] The embodiments of the present disclosure belong to the field of sensor technology, and specifically relate to a high-temperature resistant magnetoelectric speed sensor. Background Art

[0002] The magnetoelectric speed sensor uses magnetoelectric induction as the basic principle to measure the speed. The magnetoelectric speed sensor is composed of iron core, magnetic steel, induction coil and other components. When the measured object rotates, the coil of the speed sensor will generate magnetic lines of force, and the rotation of the gear will cut the magnetic lines of force. Due to the change in magnetic resistance, the magnetic circuit will generate a pulse voltage in the induction coil. The working mode of the magnetoelectric speed sensor determines that it has strong anti-interference ability and can work in environments such as smoke, oil and gas, and water vapor. The magnetoelectric speed sensor has a strong output signal and a wide measurement range. It can measure components such as gears, crankshafts, spokes, and rotating bodies with gaps on the surface.

[0003] The maintenance cost of the magnetoelectric speed sensor is low, and no power is required during operation. The measurement is completely based on magnetoelectric induction. The magnetoelectric speed sensor has a compact structure, small size, easy installation and use, high operating temperature, and can be used with various secondary instruments to monitor the vehicle's driving speed.

[0004] Now more and more heavy-duty vehicle sensors use this type of sensor. It can not only be used for the camshaft and crankshaft of the vehicle engine, but also can be used on gears in harsh environments to monitor the wheel speed of the vehicle. With the high-end development of commercial vehicles, AMT gearboxes will gradually become popular, and the product is in a rising period. However, the existing sensor skeleton has poor high temperature resistance, which limits the use of sensors in high temperature environments. In addition, the iron core, magnetic steel and plastic skeleton are assembled. After injection molding, there is still a gap between the iron core and the skeleton, and water vapor will invade and corrode internal components, resulting in poor reliability.

[0005] Therefore, how to solve the above problems has become a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0006] The embodiments of the present disclosure aim to solve at least one of the technical problems existing in the prior art and provide a high temperature resistant magnetoelectric rotation speed sensor.

[0007] One aspect of an embodiment of the present disclosure provides a high temperature resistant magnetoelectric rotation speed sensor, comprising: a plug;

[0008] A high temperature resistant frame, one end of which is embedded in the plug; the high temperature resistant frame has a receiving cavity; the receiving cavity is used to accommodate the magnetic steel, the iron core and the coil;

[0009] A first sealing member, arranged on the peripheral side of the plug;

[0010] A covering member covers the other end of the high temperature resistant skeleton and the first sealing member; wherein the first sealing member is used to seal the connection gap between the plug and the covering member.

[0011] Optionally, the accommodating cavity includes a first cavity formed in the high temperature resistant frame and a second cavity surrounding the first cavity;

[0012] The magnetic steel and the iron core are arranged in the first chamber, and the magnetic steel is connected to the iron core; the coil is arranged in the second chamber; wherein the coil is arranged on the circumference of the iron core.

[0013] Optionally, the material of the covering member includes metal.

[0014] Optionally, the material of the covering element includes stainless steel.

[0015] Optionally, a first sealing groove is formed on the plug; and the first sealing member is arranged in the first sealing groove.

[0016] Optionally, a first connection structure is formed on the plug; the covering member has a second connection structure; wherein the covering member is fixed to the plug by connecting the second connection structure with the first connection structure.

[0017] Optionally, the first connection structure includes a groove; the second connection structure includes a riveting structure; wherein the covering member is fixed to the plug by an adaptable connection between the riveting structure and the groove.

[0018] Optionally, a second sealing groove is also formed on the plug;

[0019] The sensor further includes a second sealing member disposed in the second sealing groove.

[0020] Optionally, a second sealing groove is provided on the plug; and the second sealing member is adapted to be installed in the second sealing groove.

[0021] Optionally, the second sealing member includes an O-ring; and the first sealing member includes an O-ring.

[0022] The beneficial effects of the embodiments of the present disclosure include:

[0023] In the present disclosure, the use of a high temperature resistant skeleton can significantly improve the high temperature resistance of the sensor, and ensure the working reliability and applicability of the sensor in a high temperature environment. In addition, a first seal is provided on the plug, and the first seal is used to seal the connection gap between the plug and the covering. Furthermore, the covering is used to cover the other end of the high temperature resistant skeleton and the first seal, so that the covering plays a structural sealing role for the first seal, that is, the covering cooperates with the first seal to strengthen the sealing strength, prevent water vapor from intruding, corrode internal components, and ensure the reliability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The present invention is a schematic structural diagram of a high temperature resistant magnetoelectric speed sensor according to an embodiment of the present invention.

[0025] In the figure, 1. high temperature resistant skeleton; 2. plug; 3. first sealing member; 4. covering member; 5. magnet; 6. core; 7. coil; 8. second sealing member; 9. terminal; 11. first chamber; 12. second chamber; 21. first sealing groove; 22. first connecting structure; 23. second sealing groove; 41. second connecting structure. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solution of the present disclosure, the present disclosure is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0027] The following is a further detailed description of the implementation methods of the present application in conjunction with the accompanying drawings and examples. The detailed descriptions and drawings of the following examples are used to illustrate the principles of the present application, but cannot be used to limit the scope of the present application, that is, the present application is not limited to the described embodiments. In the description of the present application, it should be noted that, unless otherwise specified, the meaning of "multiple" is more than two; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inside", "outside", etc. is only for the convenience of describing the present application 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 a limitation on the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. "Vertical" is not vertical in the strict sense, but within the error tolerance range. "Parallel" is not parallel in the strict sense, but within the error tolerance range.

[0028] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0029] like Figure 1 As shown, a high temperature resistant magnetoelectric speed sensor comprises a high temperature resistant frame 1, a plug 2, a first sealing component 3, a covering component 4, a magnetic steel 5, an iron core 6 and a coil 7.

[0030] One end of the high temperature resistant frame 1 is embedded in the plug 2 , and the high temperature resistant frame 1 has a receiving cavity, which is used to accommodate the magnetic steel 5 , the iron core 6 and the coil 7 .

[0031] The first sealing member 3 is disposed on the peripheral side of the plug 2. The covering member 4 covers the other end of the high temperature resistant frame 1 and the first sealing member 3, wherein the first sealing member 3 is used to seal the connection gap between the plug 2 and the covering member 4.

[0032] In the present disclosure, the use of a high temperature resistant skeleton can significantly improve the high temperature resistance of the sensor and ensure the working reliability and applicability of the sensor in a high temperature environment. In addition, a first seal 3 is provided on the plug 2, and the first seal 3 is used to seal the connection gap between the plug 2 and the covering 4. Further, the covering 4 is used to cover the other end of the high temperature resistant skeleton 1 and the first seal 3, so that the covering 4 plays a structural sealing role for the first seal 3, that is, the covering 4 cooperates with the first seal 3 to strengthen the sealing strength, prevent water vapor from intruding, corrode internal components, and ensure the reliability of the equipment.

[0033] In some embodiments, the accommodating cavity includes a first cavity 11 formed in the high temperature resistant frame and a second cavity 12 surrounding the first cavity 11. The magnetic steel 5 and the iron core 6 are arranged in the first cavity 11, and the magnetic steel 5 is connected to the iron core 6, and the coil 7 is arranged in the second cavity 12, wherein the coil 7 is arranged around the iron core 6.

[0034] In some embodiments, the material of the covering member 4 includes metal. The use of a covering member made of metal can effectively ensure structural rigidity and structural reliability of the sensor.

[0035] In some embodiments, the material of the covering member 4 includes stainless steel. The stainless steel covering member has good high temperature resistance, ensuring the structural stability of the frame in a high temperature environment.

[0036] In some embodiments, the plug 2 is provided with a first sealing groove 21, and the first sealing member 3 is disposed in the first sealing groove 21. By fitting and installing the first sealing groove 21 and the first sealing member 3, the connection gap between the plug 2 and the covering member 4 can be effectively sealed.

[0037] In some embodiments, the first sealing member 3 comprises an O-ring.

[0038] In some embodiments, a first connection structure 22 is formed on the plug 2 , and the covering member 4 has a second connection structure 41 , wherein the covering member 4 is fixed to the plug 2 by connecting the second connection structure 41 to the first connection structure 22 .

[0039] In some embodiments, the first connection structure 22 includes a groove, and the second connection structure 41 includes a rivet structure, wherein the cover 4 is fixed to the plug 2 by the adaptive connection between the rivet structure and the groove. Specifically, the rivet structure is clamped to the side wall of the groove to achieve the connection between the cover 4 and the groove. With this arrangement, the connection reliability between the cover 4 and the plug 2 can be effectively guaranteed. On the other hand, the sealing effect can be further enhanced by clamping the rivet structure to the side wall of the groove.

[0040] In some embodiments, the material of the covering member 4 includes stainless steel.

[0041] In some embodiments, a second sealing groove 23 is further formed on the plug 2. The sensor further comprises a second sealing member 8, which is disposed in the second sealing groove 23.

[0042] In some embodiments, the second seal 8 comprises an O-ring.

[0043] In some embodiments, the sensor further has a terminal 9 , which is disposed in the plug 2 .

[0044] In some embodiments, the material of the high temperature resistant frame 1 is a high temperature resistant material. For the magnetoelectric speed sensor with the covering 4, the high temperature resistant material needs to meet the requirement of high temperature resistance of 200°C and the performance does not decay during the subsequent product life cycle.

[0045] In summary, the speed sensor disclosed in the present invention is resistant to high temperatures and has good product sealing and reliability.

[0046] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present disclosure, but the present disclosure is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and substance of the present disclosure, and these modifications and improvements are also considered to be within the scope of protection of the present disclosure.

Claims

1. A high temperature resistant magnetoelectric speed sensor, characterized in that: include: plug; A high temperature resistant frame, one end of which is embedded in the plug; the high temperature resistant frame has a receiving cavity; the receiving cavity is used to accommodate the magnetic steel, the iron core and the coil; A first sealing member, arranged on the peripheral side of the plug; A covering member covers the other end of the high temperature resistant skeleton and the first sealing member; wherein the first sealing member is used to seal the connection gap between the plug and the covering member.

2. A high temperature resistant magnetoelectric speed sensor according to claim 1, characterized in that: The accommodating cavity includes a first cavity formed in the high temperature resistant frame and a second cavity surrounding the first cavity; The magnetic steel and the iron core are arranged in the first chamber, and the magnetic steel is connected to the iron core; the coil is arranged in the second chamber; wherein the coil is arranged on the circumference of the iron core.

3. A high temperature resistant magnetoelectric speed sensor according to claim 1 or 2, characterized in that: The material of the covering element includes metal.

4. A high temperature resistant magnetoelectric speed sensor according to claim 1 or 2, characterized in that: The material of the covering member includes stainless steel.

5. A high temperature resistant magnetoelectric speed sensor according to claim 1 or 2, characterized in that: The plug is provided with a first sealing groove; the first sealing member is arranged in the first sealing groove.

6. A high temperature resistant magnetoelectric speed sensor according to claim 1 or 2, characterized in that: The plug is formed with a first connection structure; the covering member has a second connection structure; wherein the covering member is fixed to the plug through the connection between the second connection structure and the first connection structure.

7. A high temperature resistant magnetoelectric speed sensor according to claim 6, characterized in that: The first connection structure includes a groove; the second connection structure includes a riveting structure; wherein the covering member is fixed to the plug through the adapting connection between the riveting structure and the groove.

8. A high temperature resistant magnetoelectric speed sensor according to claim 1 or 2, characterized in that: A second sealing groove is also formed on the plug; The sensor further includes a second sealing member disposed in the second sealing groove.

9. The high temperature resistant magnetoelectric speed sensor according to claim 8, characterized in that: The plug is provided with a second sealing groove; the second sealing member is adapted and installed in the second sealing groove.

10. The high temperature resistant magnetoelectric speed sensor according to claim 8, characterized in that: The second sealing member includes an O-ring; and the first sealing member includes an O-ring.

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