Structure for increasing output amplitude of magnetoelectric rotating speed sensor

Abstract

The utility model relates to the technical field of magnetoelectric rotating speed sensors, in particular to a structure for increasing the output amplitude of a magnetoelectric rotating speed sensor, which comprises a shell, one end of the shell is connected with a connector through a cable, a core frame is arranged in the shell, magnetic steel is arranged in the core frame, one end of the core frame is of a hollow conical structure, and the other end of the core frame is of a hollow conical structure. An enameled wire is wound on the periphery of the conical structure portion of the core frame, a special-shaped iron core is inserted into the conical structure portion of the core frame, the end portion of an existing hollow cylindrical core frame is changed into the hollow conical core frame, under the condition that the installation space is small or large limitation exists, the same sensor size is achieved, and the output amplitude can be higher. Under the same external condition and under the condition of low rotating speed, the output amplitude is higher, the acquisition precision can be improved, and the size and volume of the sensor can be reduced under the condition of achieving the same output amplitude.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetoelectric rotation speed sensors, in particular to a structure used for magnetoelectric rotation speed sensors to increase output amplitude. Background Art

[0002] The magnetoelectric sensor uses the principle of electromagnetic induction to achieve the purpose of speed measurement. It has a large output signal, good anti-interference performance, does not require an external power supply, and can be used in harsh environments such as smoke, oil and gas, and water vapor.

[0003] In the application of magnetoelectric speed sensor, the performance-related factors include gear disc speed, installation gap, minimum output amplitude, number of enameled wire winding turns, etc. The smaller the gap, the larger the corresponding output amplitude; the higher the gear disc speed, the larger the corresponding output amplitude; the more winding turns, the larger the corresponding output amplitude. In some measurement cam gear disc or low speed application states, the higher the corresponding output amplitude is generally required, the stronger the ability to resist interference and clutter, and the higher the collection accuracy of the corresponding collection part.

[0004] The main methods for increasing the output amplitude of magnetoelectric speed sensors currently include reducing the thickness of the front-end shell, increasing the size of the transformer, and increasing the number of turns of the enameled wire.

[0005] A Chinese patent with announcement number CN219915660U discloses an external magnetoelectric speed sensor with its own signal conditioning circuit, in which the magnetoelectric speed sensor part adopts a cylindrical hollow core frame, and the enameled wire is evenly wound on the core frame. In actual use, in order to increase the output amplitude, it is necessary to increase the speed or increase the volume of the sensor. Utility Model Content

[0006] In view of the above problems, the utility model provides a structure for improving the output amplitude of a magnetoelectric rotation speed sensor.

[0007] The technical solution adopted is a structure for improving the output amplitude of a magnetoelectric speed sensor, including a shell, one end of which is connected to a connector via a cable, a core frame is arranged inside the shell, and a magnetic steel is arranged inside the core frame, wherein one end of the core frame is a hollow conical structure, and an enameled wire is wound around the outer periphery of the conical structure part of the core frame, and a special-shaped iron core is inserted into the conical structure part of the core frame.

[0008] Optionally, the core frame includes a horizontal section, a tapered section, and a vertical section;

[0009] One end of the tapered section is connected to the horizontal section, and the other end of the tapered section is connected to the vertical section;

[0010] The magnetic steel is arranged in the horizontal section;

[0011] The vertical section abuts against a stop cover at the end of the shell.

[0012] Optionally, the size of the opening at the connection between the tapered section and the horizontal section is greater than the size of the opening at the connection between the tapered section and the vertical section.

[0013] Optionally, the special-shaped iron core has a conical structure, and the tail of the special-shaped iron core is located in the horizontal section, and the top of the special-shaped iron core passes through the vertical section.

[0014] A bushing and a threaded tail sleeve are optionally provided in the housing, and the threaded tail sleeve is provided at the connection between the housing and the cable;

[0015] The bushing is arranged on the outer periphery of the connecting terminal in the housing.

[0016] Optionally, a wire protection spring is arranged on the outer periphery of the cable, and one end of the wire protection spring is connected to the threaded tail sleeve.

[0017] Optionally, a sealing ring is also provided on the outer periphery of the shell.

[0018] The beneficial effects of the present utility model include at least one of the following:

[0019] 1. By changing the end of the existing hollow cylindrical core frame to a hollow conical core frame, the output amplitude of the same sensor size can be higher when the installation space is small or there are large restrictions.

[0020] 2. Under the same external conditions, at low speed, the output amplitude is higher, which can improve the acquisition accuracy. When the same output amplitude is achieved, the size and volume of the sensor can be reduced.

[0021] 3. The problem of the existing magnetoelectric speed sensor using a hollow cylindrical core frame is solved. The magnetoelectric speed sensor part uses a cylindrical hollow core frame, and the enameled wire is evenly wound on the core frame. In actual use, in order to increase the output amplitude, the speed can only be increased or the volume of the sensor is increased, resulting in inconvenient adjustment or the need to replace the sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 To improve the output amplitude, the magnetoelectric speed sensor is constructed;

[0023] Figure 2 To improve the output amplitude, the core frame diagram of the magnetoelectric speed sensor is as follows;

[0024] The figure numbers are: 1 is a special-shaped iron core, 2 is a conical core frame, 201 is a horizontal section, 202 is a conical section, 203 is a vertical section, 3 is a cover, 4 is an enameled wire, 5 is a shell, 6 is a magnet, 7 is a sealing ring, 8 is a bushing, 9 is a threaded tail sleeve, 10 is a wire protection spring, 11 is a cable, and 12 is a connector. DETAILED DESCRIPTION

[0025] The following describes the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0026] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0027] like Figure 1 As shown, a structure for increasing the output amplitude of a magnetoelectric speed sensor comprises a shell 5, one end of the shell 5 is connected to a connector 12 via a cable 11, a core frame 2 is arranged in the shell 5, a magnetic steel 6 is arranged in the core frame 2, one end of the core frame 2 is a hollow conical structure, an enameled wire 4 is wound around the outer periphery of the conical structure portion of the core frame 2, and a special-shaped iron core 1 is inserted into the conical structure portion of the core frame 2.

[0028] The purpose of this design is to change the end of the existing hollow cylindrical core frame into a hollow conical core frame, so that the output amplitude of the same sensor size can be higher when the installation space is small or there are large restrictions. Under the same external conditions, at low speeds, the output amplitude is higher, which can improve the acquisition accuracy. When the same output amplitude is achieved, the size and volume of the sensor can be reduced. The existing magnetoelectric speed sensor using a hollow cylindrical core frame is solved, in which the magnetoelectric speed sensor part uses a cylindrical hollow core frame, and the enameled wire is evenly wound on the core frame. In actual use, in order to increase the output amplitude, it can only be done by increasing the speed or increasing the volume of the sensor, resulting in inconvenient adjustment or the need to replace the sensor.

[0029] At the same time, in this embodiment, a specific structure of a conical core frame is also provided, such as Figure 2 As shown, the core frame 2 includes a horizontal section 201, a tapered section 202 and a vertical section 203;

[0030] One end of the tapered section 202 is connected to the horizontal section 201, and the other end of the tapered section 202 is connected to the vertical section 203;

[0031] The magnetic steel 6 is disposed in the horizontal section 201;

[0032] The vertical section 203 abuts against the stop cover 3 at the end of the housing 5 .

[0033] The opening size at the connection between the conical section 202 and the horizontal section 201 is larger than the opening size at the connection between the conical section 202 and the vertical section 203 .

[0034] The special-shaped iron core 1 has a conical structure, and the tail of the special-shaped iron core 1 is located in the horizontal section 201, and the top of the special-shaped iron core 1 passes through the vertical section 203.

[0035] In this way, in actual use, during the enameled wire winding process, part of the coil is concentrated at the front end, and the coil is moved forward with a new structure, shortening the distance between the coil and the gear disc teeth. Under the same external installation gap, the same front end shell thickness, and the same number of winding turns, the magnetic induction intensity is improved, thereby increasing the output amplitude. Therefore, when the installation space is small or has large restrictions, the output amplitude of the same sensor size can be higher.

[0036] In this embodiment, a peripheral connection structure of a housing is also provided, wherein a bushing 8 and a threaded tail sleeve 9 are arranged in the housing 5, and the threaded tail sleeve 9 is arranged at the connection between the housing 5 and the cable 11;

[0037] The bushing 8 is disposed on the outer periphery of the connecting terminal in the housing 5 .

[0038] At the same time, a wire protection spring 10 is arranged on the outer periphery of the cable 11 , and one end of the wire protection spring 10 is connected to the threaded tail sleeve 9 .

[0039] Furthermore, a sealing ring 7 is provided on the outer periphery of the housing 5 .

[0040] The purpose of this design is to protect the connection terminal by providing a bushing, and the wire protection spring is provided to prevent bending at the connection between the cable and the housing, and also to provide stability for the cable connection. The sealing performance of the entire magnetoelectric speed sensor is improved by providing a sealing ring.

[0041] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A structure for increasing the output amplitude of a magnetoelectric speed sensor, comprising a housing (5), one end of the housing (5) being connected to a connector (12) via a cable (11), a core frame (2) being arranged in the housing (5), and a magnetic steel (6) being arranged in the core frame (2), characterized in that: One end of the core frame (2) is in a hollow conical structure, and an enameled wire (4) is wound around the outer periphery of the conical structure portion of the core frame (2), and a special-shaped iron core (1) is inserted into the conical structure portion of the core frame (2).

2. A structure for increasing the output amplitude of a magnetoelectric speed sensor according to claim 1, characterized in that: The core frame (2) comprises a horizontal section (201), a conical section (202) and a vertical section (203); One end of the tapered section (202) is connected to the horizontal section (201), and the other end of the tapered section (202) is connected to the vertical section (203); The magnetic steel (6) is arranged in the horizontal section (201); The vertical section (203) abuts against the stop cover (3) at the end of the housing (5).

3. A structure for increasing the output amplitude of a magnetoelectric speed sensor according to claim 2, characterized in that: The size of the opening at the connection between the conical section (202) and the horizontal section (201) is greater than the size of the opening at the connection between the conical section (202) and the vertical section (203).

4. The structure for increasing the output amplitude of a magnetoelectric speed sensor according to claim 3, characterized in that: The special-shaped iron core (1) has a conical structure, and the tail of the special-shaped iron core (1) is located in the horizontal section (201), and the top of the special-shaped iron core (1) passes through the vertical section (203).

5. The structure for increasing the output amplitude of a magnetoelectric speed sensor according to claim 1, characterized in that: A bushing (8) and a threaded tail sleeve (9) are arranged in the housing (5), and the threaded tail sleeve (9) is arranged at the connection between the housing (5) and the cable (11); The bushing (8) is arranged on the outer periphery of the connecting terminal in the housing (5).

6. A structure for increasing the output amplitude of a magnetoelectric speed sensor according to claim 5, characterized in that: A wire protection spring (10) is arranged on the outer periphery of the cable (11), and one end of the wire protection spring (10) is connected to the threaded tail sleeve (9).

7. The structure for increasing the output amplitude of a magnetoelectric speed sensor according to claim 1, characterized in that: A sealing ring (7) is also provided on the outer periphery of the housing (5).

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