Position sensor with Hall structure

Abstract

The utility model discloses a position sensor with a Hall structure, which comprises a shell part, a through hole is arranged at the upper end of the shell part, a rotating shaft is arranged in the through hole, the rotating shaft is movably connected with a valve actuating mechanism, a magnetic material is arranged at the tail end of the rotating shaft, and a Hall chip is arranged in a cavity of the shell part at a position opposite to the magnetic material in a non-contact manner. The Hall chip is used for detecting the magnetic field change of the magnetic material and outputting an electric signal to an external control circuit, and one end of the Hall chip is electrically connected with a wire; according to the technical scheme, the position sensor achieves high precision, quick response and reliable operation in valve control, non-contact position feedback and high-speed response are achieved through combination of the piezoelectric valve and the magnetic feedback system, and a sealing structure and anti-seismic performance are achieved; therefore, the purposes of reducing mechanical wear, improving positioning precision, improving control precision and energy-saving effect of an industrial automation system and prolonging service life of equipment are achieved, and waterproof performance and stability of the sensor in an outdoor environment are improved.

Description

Technical Field

[0001] This utility model relates to the field of position sensor technology, and more specifically, to a position sensor with a Hall structure. Background Technology

[0002] Position sensors are mainly used in industrial automation, especially in applications where precise control of fluid flow (such as gas, liquid, etc.) is required. Their main function is to precisely control the position of valves, thereby regulating the flow of fluid.

[0003] Traditional position sensor drive modules often consist of piezoelectric valves, which are piezoelectric switches such as potentiometers or photoelectric encoders. These valves input air pressure into the regulating valve diaphragm in a switching manner. However, they suffer from drawbacks such as relatively short lifespan due to mechanical wear, poor waterproofing, low environmental tolerance, and low installation accuracy. Utility Model Content

[0004] In view of the above-mentioned technical problems in related technologies, this utility model proposes a Hall structure position sensor, which can overcome the above-mentioned shortcomings of the prior art.

[0005] To achieve the above-mentioned technical objectives, the technical solution of this utility model is implemented as follows:

[0006] A position sensor with a Hall effect structure;

[0007] The Hall effect position sensor includes a housing, with a through hole at the upper end of the housing. A rotating shaft is disposed within the through hole and is movably connected to a valve actuator. A magnetic material is disposed at the end of the rotating shaft. A Hall chip is disposed in the cavity of the housing, in a non-contact manner opposite to the magnetic material, for detecting changes in the magnetic field of the magnetic material and outputting an electrical signal to an external control circuit. One end of the Hall chip is electrically connected to a wire.

[0008] Furthermore, a sealing structure is provided between the rotating shaft and the through hole at the upper end of the housing to prevent moisture and dust from entering the detection area.

[0009] Furthermore, a sealing ring is provided at the circumferential contact portion between the sealing structure and the rotating shaft.

[0010] Furthermore, the Hall chip and the wire are connected by the positive terminal of the wire, the negative terminal of the wire, and a connecting wire, respectively.

[0011] Furthermore, the Hall chip, the positive terminal of the wire, the negative terminal of the wire, and the external surface of the connecting wire are provided with a first encapsulation structure for improving waterproof and shockproof performance. The first encapsulation structure is an epoxy resin potting layer.

[0012] Furthermore, the upper and lower end faces of the housing portion having through holes are both provided with a second plastic sealing structure.

[0013] Furthermore, the sealing structure includes a waterproof coating, a metal shielding layer, and an O-ring.

[0014] Furthermore, the relative positions of the magnetic material and the Hall chip can be adjusted.

[0015] The beneficial effects of this utility model are as follows: Through the optimized and improved design of the product, the position sensor achieves high precision, fast response and reliable operation in valve control. The combination of the piezoelectric valve and the magnetic feedback system realizes non-contact position feedback and high-speed response, and has a sealed structure and shock resistance. This reduces mechanical wear, improves positioning accuracy, enhances the control accuracy of industrial automation systems, improves energy efficiency and extends equipment lifespan, and improves the waterproof performance and stability of the sensor in outdoor environments. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a front view of the overall structure of a Hall effect position sensor according to an embodiment of the present invention;

[0018] Figure 2 This is a rear view of the overall structure of a Hall effect position sensor according to an embodiment of the present invention;

[0019] In the diagram: 1. Shaft; 2. Sealing structure; 3. Sealing ring; 4. Magnetic material; 5. Hall effect chip; 601. First encapsulation structure; 602. Second encapsulation structure; 701. Positive terminal of the wire; 702. Negative terminal of the wire; 703. Connecting wire; 8. Wire. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art are within the protection scope of the present utility model.

[0021] It should be understood that in the description of the embodiments of this utility model, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of the embodiments of this utility model, "several" means two or more, unless otherwise explicitly specified.

[0022] like Figure 1-2 As shown, a position sensor with a Hall structure according to an embodiment of the present invention includes a housing portion, the upper end of which has a through hole, and a rotating shaft 1 is disposed in the through hole. The rotating shaft 1 is movably connected to a valve actuator. A magnetic material 4 is disposed at the end of the rotating shaft 1. A Hall chip 5 is disposed in the cavity of the housing portion at a position opposite to the magnetic material 4 without contact, for detecting changes in the magnetic field of the magnetic material 4 and outputting an electrical signal to an external control circuit. One end of the Hall chip 5 is electrically connected to a wire 8.

[0023] According to an embodiment of the present invention, a position sensor with a Hall structure is provided, in a specific embodiment, a sealing structure 2 is provided between the rotating shaft 1 and the through hole at the upper end of the housing to prevent water vapor and dust from entering the detection area.

[0024] According to an embodiment of the present invention, a position sensor with a Hall structure is provided, in a specific embodiment, a sealing ring 3 is provided at the circumferential contact portion between the sealing structure 2 and the rotating shaft 1.

[0025] According to an embodiment of the present invention, a position sensor with a Hall structure is provided. In a specific embodiment, the Hall chip 5 and the wire 8 are connected by a positive wire 701, a negative wire 702, and a connecting wire 703, respectively.

[0026] According to an embodiment of the present invention, a position sensor with a Hall structure is provided on the outside of the Hall chip 5, the positive electrode 701 of the wire, the negative electrode 702 of the wire and the connecting wire 703 to improve waterproof and shockproof performance. The first encapsulation structure 601 is an epoxy resin potting layer.

[0027] According to an embodiment of the present invention, a position sensor with a Hall structure is provided, in a specific embodiment, the upper and lower end faces of the housing portion having through holes are provided with a second plastic sealing structure 602.

[0028] According to an embodiment of the present invention, a position sensor with a Hall structure is provided. In a specific embodiment, the sealing structure 2 includes a waterproof coating, a metal shielding layer, and an O-ring.

[0029] According to an embodiment of the present invention, in a specific embodiment of a Hall structure position sensor, the relative positions of the magnetic material 4 and the Hall chip 5 are adjustable.

[0030] To facilitate understanding of the above-mentioned technical solutions of this utility model, the following detailed description of the above-mentioned technical solutions of this utility model is provided through specific usage methods.

[0031] In summary, by utilizing the above-mentioned technical solution of this utility model and through the optimized and improved design of the product, the position sensor achieves high precision, fast response, and reliable operation in valve control. The combination of the piezoelectric valve and the magnetic feedback system enables contactless position feedback and high-speed response, and also features a sealed structure and shock resistance. This reduces mechanical wear, improves positioning accuracy, enhances the control precision of industrial automation systems, improves energy efficiency, and extends equipment lifespan. Furthermore, it improves the sensor's waterproof performance and stability in outdoor environments.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A position sensor with a Hall effect structure, characterized in that, The device includes a housing, with a through hole at the upper end of the housing. A rotating shaft (1) is installed in the through hole. The rotating shaft (1) is movably connected to a valve actuator. A magnetic material (4) is provided at the end of the rotating shaft (1). A Hall chip (5) is provided in the cavity of the housing in a non-contact position opposite to the magnetic material (4) for detecting changes in the magnetic field of the magnetic material (4) and outputting an electrical signal to an external control circuit. One end of the Hall chip (5) is electrically connected to a wire (8).

2. A position sensor with a Hall structure according to claim 1, characterized in that, A sealing structure (2) is provided between the rotating shaft (1) and the through hole at the upper end of the housing to prevent water vapor and dust from entering the detection area.

3. A position sensor with a Hall structure according to claim 2, characterized in that, The sealing structure (2) is provided with a sealing ring (3) at the circumferential contact portion with the rotating shaft (1).

4. A position sensor with a Hall structure according to claim 1, characterized in that, The Hall chip (5) and the wire (8) are connected by the positive terminal (701), the negative terminal (702), and the connecting wire (703), respectively.

5. A position sensor with a Hall structure according to claim 4, characterized in that, The Hall chip (5), the positive electrode (701), the negative electrode (702) and the connecting wire (703) are provided with a first encapsulation structure (601) for improving waterproof and shockproof performance. The first encapsulation structure (601) is an epoxy resin potting layer.

6. A position sensor with a Hall structure according to claim 1, characterized in that, The upper and lower ends of the housing portion having through holes are provided with a second plastic sealing structure (602).

7. A position sensor with a Hall structure according to claim 2, characterized in that, The sealing structure (2) includes a waterproof coating, a metal shielding layer, and an O-ring.

8. A position sensor with a Hall structure according to claim 1, characterized in that, The relative positions of the magnetic material (4) and the Hall chip (5) can be adjusted.

Images