A self-fixing sensor structure

Abstract

This invention provides a self-fixing sensor structure, relating to the field of Hall effect current sensors. It includes a sensor body comprising a housing, a magnetic core disposed on the right side of the housing, a circuit board disposed on the right side of the magnetic core, and elastic fixing strips disposed within the inner hole of the housing. The elastic fixing strips are arranged in three sets, evenly distributed within the inner hole of the housing. One side of each elastic fixing strip is fixedly connected to the inner hole of the housing, and the other side forms an angle with the inner hole of the housing. This invention uses the elastic fixing strips to directly wrap around cables or copper pillars through physical deformation, eliminating the need for bolts, welding, or adhesives. Installation time is reduced to within seconds, making it particularly suitable for confined spaces or emergency repair scenarios. Simultaneously, it fixes the cable or copper pillar at the center of the sensor body's inner hole, resulting in more accurate measurements.

Description

Technical Field

[0001] This invention belongs to the field of Ben Hall current sensors, specifically a self-fixing sensor structure. Background Technology

[0002] The Hall current sensor is a sensor that measures current based on the Hall effect principle. The Hall effect refers to the phenomenon that when current passes through a semiconductor perpendicular to an external magnetic field, the charge carriers are deflected, and an additional electric field is generated in the direction perpendicular to both the current and the magnetic field, thereby creating a potential difference across the semiconductor. The Hall current sensor utilizes this principle to convert the current to be measured into a voltage signal output through magnetic field coupling, thus achieving non-contact measurement of the current.

[0003] Sensors are typically fixed in use using screws, adhesives, or other methods to prevent shaking or displacement during measurement. This would alter the relative position between the sensor and the conductor being measured, affecting the coupling effect of the generated magnetic field and ultimately causing deviations in the measured current value, thus impacting the accuracy of the measurement results. However, due to the compact structure of Ben Hall current sensors, conventional fixing methods cannot be used in confined or inconvenient installation environments.

[0004] In summary, this invention provides a self-fixing sensor structure to solve the above problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A self-fixing sensor structure includes a sensor body, the sensor body including a housing, a magnetic core disposed on the right side of the housing, a circuit board disposed on the right side of the magnetic core, and elastic fixing strips disposed in the inner hole of the housing, the number of elastic fixing strips being three sets, and evenly arrayed in the inner hole of the housing;

[0007] One side of the elastic fixing strip is fixedly connected to the inner hole of the outer shell, and the other side of the elastic fixing strip forms an angle with the inner hole of the outer shell.

[0008] Furthermore, in this invention, the sensor body also includes a mounting cavity opened on the right side of the housing, and the magnetic core and circuit board are both mounted in the inner cavity of the mounting cavity.

[0009] Furthermore, in this invention, the surface of the magnetic core is provided with a magnetic core air gap, the back of the circuit board is provided with a Hall element, the Hall element is located in the inner cavity of the magnetic core air gap, and the front of the circuit board is provided with a potentiometer and electrical terminals.

[0010] Furthermore, this utility model also includes a locking unit disposed on the back of the sensor body. The locking unit includes a plastic ring, and a plastic abutment ring is fixedly connected to one side of the plastic ring. An internal thread is provided on the rear end of the surface of the plastic abutment ring, and an external thread that engages with the internal thread is provided in the inner hole of the outer shell.

[0011] Beneficial effects: This utility model has the following beneficial effects:

[0012] This utility model's elastic fixing strip directly wraps around the cable or copper pillar through physical deformation, eliminating the need for bolts, welding, or adhesive tools. The installation time is reduced to within a few seconds, making it particularly suitable for confined spaces or emergency repair scenarios. At the same time, it fixes the cable or copper pillar to the center of the sensor's internal hole, making its measurement more accurate. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is an exploded structural diagram of the sensor body of this utility model;

[0015] Figure 3 This is a schematic diagram of the cross-sectional structure of the sensor body of this utility model;

[0016] Figure 4 This is a schematic diagram of the back structure of the sensor body of this utility model;

[0017] Figure 5 This is a schematic diagram of the locking unit structure of this utility model;

[0018] Figure 6 This is a cross-sectional structural diagram of the connection state of the sensor body and the locking unit of this utility model.

[0019] In the picture:

[0020] 1. Sensor body; 101. Housing; 102. Magnetic core; 103. Circuit board; 104. Elastic fixing strip; 105. Mounting cavity; 106. Magnetic core air gap; 107. Hall element; 108. Potentiometer; 109. Electrical terminal; 110. External thread; 2. Locking unit; 201. Plastic ring; 202. Plastic clamping ring; 203. Internal thread. Detailed Implementation

[0021] To better understand the technical content of this utility model, specific embodiments are described below in conjunction with the accompanying drawings. Various aspects of this utility model are described in this disclosure with reference to the accompanying drawings, which illustrate numerous illustrative embodiments. The embodiments of this disclosure are not necessarily defined to include all aspects of this utility model. It should be understood that the various concepts and embodiments described above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in this utility model are not limited to any particular implementation. Furthermore, some aspects of this utility model can be used alone or in any suitable combination with other aspects disclosed in this utility model.

[0022] Example 1

[0023] like Figure 1-3 As shown, this is the first embodiment of the present invention. This embodiment provides a self-fixing sensor structure, including a sensor body 1. The sensor body 1 includes a housing 101, a magnetic core 102 disposed on the right side of the housing 101, a circuit board 103 disposed on the right side of the magnetic core 102, and an elastic fixing strip 104 disposed in the inner hole of the housing 101. There are three sets of elastic fixing strips 104, which are evenly arrayed in the inner hole of the housing 101.

[0024] One side of the elastic fixing strip 104 is fixedly connected to the inner hole of the outer shell 101, and the other side of the elastic fixing strip 104 forms an angle with the inner hole of the outer shell 101.

[0025] like Figure 1-3 As shown, the overcurrent cable or copper pillar passes through the inner hole of the sensor body 1. The elastic fixing strip 104 makes close contact with the cable or copper pillar through its elastic deformation. The elastic fixing strip 104 presses the cable or copper pillar tightly to achieve fixation without additional tools or fixing devices. The three sets of elastic fixing strips 104 are evenly arrayed in the inner hole of the housing 101 to ensure the stable fixation of the sensor body 1 on the cable or copper pillar and prevent the sensor body 1 from shaking or falling off. In addition, fixing the cable or copper pillar at the center of the inner hole of the sensor body 1 makes the measurement more accurate. The elastic fixing strip 104 can be made of silicone material with high elasticity, flexibility, temperature resistance from -50℃ to 200℃ and excellent insulation performance.

[0026] Example 2

[0027] Reference Figure 2 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0028] In this embodiment, the sensor body 1 also includes a mounting cavity 105 opened on the right side of the outer shell 101, and the magnetic core 102 and the circuit board 103 are both installed in the inner cavity of the mounting cavity 105.

[0029] The surface of the magnetic core 102 is provided with a magnetic core air gap 106, and the back of the circuit board 103 is provided with a Hall element 107, which is located in the inner cavity of the magnetic core air gap 106. The front of the circuit board 103 is provided with a potentiometer 108 and an electrical terminal 109.

[0030] like Figure 2 As shown, after all components are installed, epoxy resin can be used for potting to achieve moisture-proof, dust-proof, and chemical corrosion-proof properties, thus extending service life.

[0031] The sensor body 1 integrates a housing 101, a magnetic core 102, a circuit board 103, a magnetic core air gap 106, a Hall element 107, a potentiometer 108, and electrical terminals 109. The housing 101 provides physical protection for the internal components, preventing damage from the external environment. The Hall element 107 is fixed to the back of the circuit board 103 by soldering or surface mounting, precisely aligned with the magnetic core air gap 106. The potentiometer 108 and electrical terminals 109 are soldered to the front of the circuit board 103. The magnetic core 102 can focus the magnetic field around the cable, improving the detection sensitivity of the Hall element 107. The magnetic core air gap 106 on the surface of the magnetic core 102 provides the Hall element 107 with a precise magnetic field detection position, improving the measurement accuracy of the sensor. The Hall element 107 on the circuit board 103 is responsible for detecting changes in the magnetic field and converting it into an electrical signal for processing. The potentiometer 108 is used to adjust the output signal or sensitivity of the sensor to meet the needs of different application scenarios. The electrical terminals 109 provide an electrical connection interface for the sensor, facilitating connection and communication between the sensor and other devices or systems.

[0032] Example 3

[0033] Reference Figure 4-6 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0034] In this embodiment, a locking unit 2 is also provided on the back of the sensor body 1. The locking unit 2 includes a plastic ring 201. A plastic abutment ring 202 is fixedly connected to one side of the plastic ring 201. An internal thread 203 is provided at the rear end of the surface of the plastic abutment ring 202. An external thread 110 is provided in the inner hole of the outer shell 101 to engage with the internal thread 203.

[0035] like Figure 4-6As shown, the sensor body 1 can be automatically fixed by the elastic fixing strip 104. The locking unit 2 in this embodiment can be used as an auxiliary fixation for the sensor body 1. The size selection should be adapted to the size of the overcurrent cable or copper pillar and the size of the inner hole of the sensor body 1. When the locking unit 2 is needed, the overcurrent cable or copper pillar is passed through the plastic ring 201 and the plastic clamping ring 202. The plastic ring 201 is rotated, and the plastic clamping ring 202 moves into the inner hole of the sensor body 1. One end of the elastic fixing strip 104 will be inserted into the plastic clamping ring 202. At the same time as the rotation, the internal thread 203 on the plastic clamping ring 202 engages with the external thread 110 of the inner hole of the outer shell 101, thereby fixing the locking unit 2. Since the plastic clamping ring 202 limits and fixes the elastic fixing strip 104, the fixing effect of the sensor body 1 is further enhanced.

[0036] In use, the overcurrent cable or copper post passes through the inner hole of the sensor body 1. The elastic fixing strip 104 makes close contact with the cable or copper post through its elastic deformation, and the elastic fixing strip 104 presses the cable or copper post tightly to achieve fixation. When the locking unit 2 is required, the overcurrent cable or copper post is passed through the plastic ring 201 and the plastic clamping ring 202. The plastic ring 201 is rotated, and the plastic clamping ring 202 moves into the inner hole of the sensor body 1. One end of the elastic fixing strip 104 is inserted into the plastic clamping ring 202. At the same time as the rotation, the internal thread 203 on the plastic clamping ring 202 engages with the external thread 110 of the inner hole of the outer shell 101, thereby fixing the locking unit 2. Due to the limiting and fixing of the elastic fixing strip 104 by the plastic clamping ring 202, the fixing effect on the sensor body 1 is further enhanced.

[0037] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Since this application is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail in this application.

[0038] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which this invention pertains can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this invention shall be determined by the claims.

Claims

1. A self-fixing sensor structure, comprising a sensor body (1), characterized in that: The sensor body (1) includes a housing (101), a magnetic core (102) disposed on the right side of the housing (101), a circuit board (103) disposed on the right side of the magnetic core (102), and an elastic fixing strip (104) disposed in the inner hole of the housing (101). The number of elastic fixing strips (104) is three sets, and they are evenly arrayed in the inner hole of the housing (101). One side of the elastic fixing strip (104) is fixedly connected to the inner hole of the outer shell (101), and the other side of the elastic fixing strip (104) forms an angle with the inner hole of the outer shell (101).

2. The self-fixing sensor structure as described in claim 1, characterized in that: The sensor body (1) also includes a mounting cavity (105) opened on the right side of the housing (101), and the magnetic core (102) and the circuit board (103) are both installed in the inner cavity of the mounting cavity (105).

3. The self-fixing sensor structure as described in claim 1, characterized in that: The magnetic core (102) has a magnetic core air gap (106) on its surface. A Hall element (107) is provided on the back of the circuit board (103). The Hall element (107) is located in the inner cavity of the magnetic core air gap (106). A potentiometer (108) and an electrical terminal (109) are provided on the front of the circuit board (103).

4. The self-fixing sensor structure as described in claim 1, characterized in that: It also includes a locking unit (2) disposed on the back of the sensor body (1). The locking unit (2) includes a plastic ring (201). A plastic clamping ring (202) is fixedly connected to one side of the plastic ring (201). An internal thread (203) is provided on the rear end of the surface of the plastic clamping ring (202). An external thread (110) is provided in the inner hole of the outer shell (101) to engage with the internal thread (203).

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