Positioning clamp for Hall sensor production

Abstract

The utility model discloses a positioning fixture for Hall sensor production, which comprises a box-shaped base, a bottom plate is slidably mounted in the base, a reset part is arranged between the bottom of the bottom plate and the base, the output end of the reset part is abutted against the bottom plate, a bearing plate and an upper panel are fixedly mounted on the base, the bearing plate is positioned above the bottom plate, and the upper panel is positioned above the bearing plate. A plurality of through holes are formed in a rectangular array of the bearing plate, the upper panel is located above the bearing plate, the upper panel and the bearing plate are correspondingly provided with a plurality of through holes, positioning pins are slidably installed in the through holes, sealing rings are arranged between the through holes and the positioning pins, the space between the bearing plate and the upper panel is filled with magnetorheological fluid, and an electromagnet is fixedly installed on the side face of the base. And the electromagnet is connected with a control switch. The placement positions are formed through the positioning pin array, so that the positioning pins can form corresponding placement points according to the shape of the side where the Hall current sensors are placed, and the placement requirements of the Hall current sensors in different shapes can be met conveniently.

Description

Technical Field

[0001] This utility model belongs to the field of Hall current sensor technology and relates to a positioning fixture for Hall sensor production. Background Technology

[0002] A Hall current sensor is a sensor that detects the current in a conductor based on the Hall effect. The Hall current sensor has a plastic housing with a detection hole in the center. Inside the housing are encapsulated electronic circuitry and a detection coil, which is mounted at the detection hole. In use, a conductor passes through the detection hole and the detection coil, and the Hall current sensor measures the current in the conductor.

[0003] In the production process of Hall current sensors, some steps require manual operation. However, Hall current sensors are irregularly shaped, and different specifications of Hall current sensors have different shapes, making them difficult to position manually. Utility Model Content

[0004] To address the aforementioned problems, this invention proposes a positioning fixture for the production of Hall sensors, which effectively solves the problems in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A positioning fixture for manufacturing Hall effect sensors includes:

[0007] The base is box-shaped;

[0008] A base plate, which is slidably mounted within the base;

[0009] A reset component, wherein the reset component is installed between the bottom of the base plate and the base;

[0010] A support plate is fixedly installed on the base and is located above the bottom plate. The support plate has multiple through holes arranged in a rectangular array.

[0011] The upper panel is fixedly installed on the base and is located above the support plate. The upper panel and the support plate are provided with a plurality of through holes.

[0012] Positioning pins, a plurality of the positioning pins are slidably installed in the through hole in a one-to-one correspondence, and a sealing ring is provided between the through hole and the positioning pin;

[0013] Magnetorheological fluid, wherein the magnetorheological fluid is filled between the support plate and the upper panel;

[0014] An electromagnet is fixedly installed on the side of the base, and the electromagnet is connected to a control switch.

[0015] Optionally, the reset component includes a drive motor, and a reset cam is mounted on the output end of the drive motor.

[0016] Optionally, the circumferential array of reset cams is provided with multiple cams, and a driven bevel gear is installed at one end of each cam that is close to the other. The driven bevel gear meshes with the same driving bevel gear.

[0017] Optionally, the bottom of the positioning pin is fixedly mounted with a limiting block.

[0018] Optionally, the base plate can slide a distance less than the length of the positioning pin.

[0019] Optionally, the base is fixedly mounted with at least two positioning posts, and the base plate is slidably mounted on the positioning posts.

[0020] Optionally, two electromagnets are provided, arranged in a mirror-symmetrical manner on both sides of the base.

[0021] Optionally, the control switch is a foot pedal.

[0022] Compared with existing technologies, this invention has the following advantages: By forming a placement position using a positioning pin array, after the Hall current sensor is placed, the positioning pins at the corresponding positions move downwards a corresponding distance, allowing the positioning pins to form corresponding placement points according to the shape of the side where the Hall current sensor is placed. These points are then fixed in position by the magnetorheological fluid and the electromagnet. This facilitates the placement of Hall current sensors of different shapes. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0024] Figure 2 This is a schematic diagram of the internal structure of an embodiment of the present utility model;

[0025] Figure 3 yes Figure 2 An enlarged schematic diagram of part A in the middle.

[0026] Reference numerals in the attached drawings: 1. Base; 2. Base plate; 21. Reset component; 211. Drive motor; 212. Reset cam; 22. Positioning pin; 31. Support plate; 32. Top panel; 33. Positioning pin; 331. Limiting block; 4. Magnetorheological fluid; 5. Electromagnetic body; 51. Control switch. Detailed Implementation

[0027] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1 to 3 This utility model discloses a positioning fixture for producing Hall effect sensors, comprising a base 1, which is box-shaped, with a base plate 2 slidably mounted inside the base 1. A reset member 21 is provided between the bottom of the base plate 2 and the base 1, with the output end of the reset member 21 abutting against the base plate 2. A support plate 31 and a top panel 32 are fixedly mounted on the base 1. The support plate 31 is located above the base plate 2 and has multiple through holes in a rectangular array. The top panel 32 is located above the support plate 31 and has multiple through holes corresponding to the support plate 31. Positioning pins 33 are slidably mounted in each of the through holes. A sealing ring is provided between the through hole and the positioning pin 33. Magnetorheological fluid 4 is filled between the support plate 31 and the top panel 32. An electromagnet 5 is fixedly mounted on the side of the base 1 and is connected to a control switch 51.

[0029] Specifically, the magnetorheological fluid 4 is a special liquid that can change its flow state under the action of a magnetic field. An electromagnet 5 controlled by a control switch 51 is provided on the side of the base 1. The positioning pin 33 is slidably installed in the through hole. When the magnetorheological fluid 4 solidifies from a liquid under the action of a magnetic field, the position of the positioning pin 33 is fixed. After the magnetic field is removed, the magnetorheological fluid 4 returns to a liquid state, and the base plate 2 pushes the positioning pin 33 to reset under the action of the reset member 21.

[0030] In this way, the positioning pins 33 are arrayed to form a placement position. After the Hall current sensor is placed, the corresponding positioning pins 33 move downwards a corresponding distance, so that the positioning pins 33 can form a corresponding placement point according to the shape of the side where the Hall current sensor is placed, and are fixed in position by the magnetorheological fluid 4 and the electromagnet 5. This facilitates the placement of Hall current sensors of different shapes.

[0031] In some feasible configurations, the base 1 is a rectangular box, and the base plate 2 is a rectangular plate. The reset component 21 can be a linear motion mechanism such as an electric actuator or a spring. The positioning pin 33 is reset by pushing it through the base plate 2, ensuring that the positioning pin 33 is at the same height after each reset, facilitating future use. Simultaneously, resetting the positioning pin 33 using a single base plate 2 simplifies the reset structure. The support plate 31 and the upper panel 32 are rectangular plates, or they can be configured as a single box. A through hole penetrates the support plate 31 and the upper panel 32, and the positioning pin 33 is installed within the through hole. The electromagnet 5 is bolted to the base 1, with its magnetic poles located at both ends of the base 1, allowing the magnetic field lines to pass through the plane of the magnetorheological fluid 4.

[0032] As a specific embodiment of a positioning fixture for producing a Hall sensor provided in the application, the reset component 21 includes a drive motor 211, and a reset cam 212 is installed at the output end of the drive motor 211.

[0033] Overall, driven by the drive motor 211, the base plate 2 pushes the positioning pin 33 to reset via the reset cam 212.

[0034] Furthermore, multiple reset cams 212 are arranged in a circumferential array, and a driven bevel gear is installed at one end of the cam that is close to each other. The driven bevel gear meshes with the same driving bevel gear.

[0035] It should be understood that by evenly arranging multiple reset cams 212, each position of the base plate 2 can be subjected to force when it is reset, thus reducing the possibility of the base plate 2 tilting.

[0036] Furthermore, the bottom of the positioning pin 33 is fixedly mounted with a limiting block 331.

[0037] It should be understood that by setting the limiting block 331, after the base plate 2 pushes the positioning pin 33 to reset, the limiting block 331 abuts against the bearing plate 31. On the one hand, this prevents the positioning pin 33 from entering the magnetorheological fluid 4 and causing the magnetorheological fluid 4 to flow out along the through hole. On the other hand, it facilitates the positioning pin 33 to reset to a uniform height.

[0038] In some feasible configurations, the reset cam 212 is axially extended into a rod shape to provide support at more locations. The driving bevel gear is arranged parallel to the base plate 2, and the output end of the drive motor 211 is fixedly connected to the driving bevel gear. The driving bevel gear meshes with the driven bevel gear, driving the reset cam 212 to rotate. To facilitate the pressing down of the base plate 2, after the base plate 2 rises to its limit position, the reset cam 212 is tilted to prevent the base plate 2 from making remote point contact with the reset cam 212, thus preventing the base plate 2 from being unable to press down. To prevent the positioning pin 33 from dislodging during the pressing process, the sliding distance of the base plate 2 is less than the length of the positioning pin 33.

[0039] As another specific embodiment of the positioning fixture for producing a Hall sensor provided in the application, the base 1 is fixedly installed with at least two positioning posts 22, and the base plate 2 is slidably installed on the positioning posts 22.

[0040] Depending on the specific application scenario, by setting positioning posts 22, the base plate 2 can slide along the positioning posts 22, reducing the possibility of the base plate 2 tilting.

[0041] In some feasible methods, the positioning post 22 is fixedly installed between the base 1 and the bearing plate 31. To facilitate fixing, the positioning post 22 is provided with a through hole. The bottom of the bearing plate 31 is fixedly connected with a bolt. After the bolt passes through the positioning post 22, it is threadedly connected to the base 1 with a nut.

[0042] As a specific embodiment of a positioning fixture for producing a Hall sensor provided in the application, two electromagnets 5 are provided, arranged in a mirror-symmetrical manner on both sides of the base 1.

[0043] It should be understood that by setting multiple electromagnets 5, the degree of curing is improved.

[0044] In some feasible ways, the control switch 51 is a foot pedal for easy control of the electromagnet 5.

[0045] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A positioning fixture for manufacturing Hall effect sensors, characterized in that, include: The base is box-shaped; A base plate, which is slidably mounted within the base; A reset component, wherein the reset component is installed between the bottom of the base plate and the base; A support plate is fixedly installed on the base and is located above the bottom plate. The support plate has multiple through holes arranged in a rectangular array. The upper panel is fixedly installed on the base and is located above the support plate. The upper panel and the support plate are provided with a plurality of through holes. Positioning pins, a plurality of the positioning pins are slidably installed in the through hole in a one-to-one correspondence, and a sealing ring is provided between the through hole and the positioning pin; Magnetorheological fluid, wherein the magnetorheological fluid is filled between the support plate and the upper panel; An electromagnet is fixedly installed on the side of the base, and the electromagnet is connected to a control switch.

2. The positioning fixture for manufacturing a Hall sensor according to claim 1, characterized in that: The reset component includes a drive motor, and a reset cam is installed at the output end of the drive motor.

3. A positioning fixture for manufacturing a Hall sensor according to claim 2, characterized in that: The reset cam circumferential array is provided with multiple cams, and a driven bevel gear is installed at one end of each cam that is close to the other. The driven bevel gear meshes with the same driving bevel gear.

4. A positioning fixture for manufacturing a Hall sensor according to claim 2, characterized in that: The bottom of the positioning pin is fixedly mounted with a limiting block.

5. A positioning fixture for manufacturing a Hall sensor according to claim 4, characterized in that: The base plate can slide a distance less than the length of the positioning pin.

6. A positioning fixture for manufacturing a Hall sensor according to claim 1, characterized in that: The base is fixedly installed with at least two positioning columns, and the base plate is slidably installed on the positioning columns.

7. A positioning fixture for manufacturing a Hall sensor according to claim 1, characterized in that: Two electromagnets are provided, arranged in a mirror-symmetrical manner on both sides of the base.

8. A positioning fixture for manufacturing a Hall sensor according to claim 7, characterized in that: The control switch is a foot pedal type.

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