Magnet front and back detection device

Abstract

The utility model discloses a magnet front and back detection device, which comprises a plurality of detection units and a driving piece, the driving piece is provided with an integrated plate, the plurality of detection units are arranged on one side of the integrated plate far away from the driving piece, and the detection units are used for detecting the magnetic field change condition of a magnet on a product. The device can detect the magnet assembly conditions of a plurality of products at the same time, and facilitates the improvement of the efficiency of the positive and negative detection of the magnets.

Description

Technical Field

[0001] The utility model relates to a magnet positive and negative detection device. Background Art

[0002] The magnet on the product is an important structure to realize the function of the product. The properties and magnetic properties of the front and back of the magnet are different. Therefore, if the magnet is placed upside down during product assembly, it will affect the function of the product. Therefore, the front and back of the magnet in the product after assembly need to be further inspected to prevent errors.

[0003] During testing, workers bring the detector close to the product to detect the magnets on it. However, the magnets on the products are small and the number of products is large. If random inspections are used, some magnets may slip through the net. If all products are tested, it will consume a lot of manpower and material resources. Utility Model Content

[0004] In order to more comprehensively detect the front and back of the magnet in the product and reduce manpower consumption, the utility model provides a magnet front and back detection device.

[0005] The utility model provides a magnet front and back detection device adopts the following technical solutions:

[0006] A magnet front and back detection device includes multiple detection units and a driving member. The driving member is installed with an integrated plate. Multiple detection units are installed on the side of the integrated plate away from the driving member. The detection units are used to detect changes in the magnetic field of the magnet on the product.

[0007] When the product moves to the detection device, the driver drives the integrated plate to move, and the driver drives the detection unit close to the product. The detection unit detects the degree of change in the magnetic field of the approaching product. Since the magnetic field changes differently at the positive and negative poles of the magnet, the detection unit can sense the change in the magnetic field by approaching the magnetic field, and then distinguish whether the side of the magnet away from the product is the positive pole or the negative pole, making the positive and negative detection of the product more convenient and accurate. At the same time, the setting of the integrated plate allows multiple detection units to approach several products at the same time, and detect the magnet assembly status of multiple products at the same time, which is conducive to improving the efficiency of magnet positive and negative detection.

[0008] Preferably, the detection unit includes a first PCB board and a Hall element arranged on the first PCB board, the Hall element is provided in several pieces, the first PCB board is arranged on the side of the integrated board away from the driving component, and the number of the Hall elements is set corresponding to the number of magnets on the product.

[0009] Multiple Hall effect sensors share the same first PCB, which is then connected to the integrated circuit board. Due to the product's small size, the size of the Hall effect sensors required for detection is correspondingly reduced, improving overall component integration and making them easier to install on the integrated circuit board. The number of Hall effect sensors is set to match the product, allowing each sensor to inspect each magnet individually, ensuring more accurate detection of the magnet's positive and negative directions.

[0010] Preferably, the integrated board is a second PCB board, and the first PCB board is welded to the second PCB board.

[0011] The first PCB board itself needs to be set on the second PCB board. The connection structure between the second PCB board and the first PCB board can not only play a structural connection role but also a signal transmission role, which is conducive to simplifying the internal structure of the detection unit.

[0012] Preferably, a distance is left between the first PCB board and the second PCB board.

[0013] Because the product's housing is higher than the installation height of the magnet inside the product, the detection unit needs to extend into the magnet if it wants to get close to or even come into contact with it. Therefore, the spacing between the first and second PCB boards helps the Hall element move to a position closer to the magnet on the product.

[0014] Preferably, a plurality of hard pins are provided on the peripheral wall of the first PCB board, and one end of the pins away from the first PCB board is plugged and fixed in the second PCB board, and the length of the pins provides the length of the distance between the first PCB board and the second PCB board.

[0015] The pins are used to connect and support the first PCB board and can serve as a signal transmission medium between the first PCB board and the second PCB board, further simplifying the overall structure and further improving the overall integration, thereby making the Hall element easier to install.

[0016] Preferably, the shape formed by the multiple Hall elements welded on the first PCB is the same as the shape of the first PCB, and the multiple Hall elements are distributed at the edges or corners of the first PCB.

[0017] This arrangement can minimize the area occupied by the first PCB board on the second PCB board, saving the material used for the first PCB board while reducing the interference between the first PCB board and the product housing or adjacent magnets.

[0018] In summary, the present invention has the following beneficial technical effects:

[0019] When the product moves to the detection device, the driver drives the integrated plate to move, and the driver drives the detection unit close to the product. The detection unit detects the degree of change in the magnetic field of the approaching product. Since the magnetic field changes differently at the positive and negative poles of the magnet, the detection unit can sense the change in the magnetic field by approaching the magnetic field, and then distinguish whether the side of the magnet away from the product is the positive pole or the negative pole, making the positive and negative detection of the product more convenient and accurate. At the same time, the setting of the integrated plate allows multiple detection units to approach several products at the same time, and detect the magnet assembly status of multiple products at the same time, which is conducive to improving the efficiency of magnet positive and negative detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The utility model is a schematic diagram of the overall structure of a magnet positive and negative detection device.

[0021] Figure 2 It is a structural diagram used to illustrate the structure of a single detection unit.

[0022] Explanation of the reference numerals: 1. Detection unit; 11. First PCB board; 12. Hall element; 13. Pin; 2. Integrated board. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1-2 The utility model is described in further detail.

[0024] The embodiment of the utility model discloses a device for detecting the positive and negative directions of a magnet.

[0025] Reference Figure 1 A magnet forward and reverse detection device includes multiple detection units 1 and a driving member. The driving member is equipped with an integrated plate 2. Multiple detection units 1 are installed on the side of the integrated plate 2 away from the driving member. The detection unit 1 is used to detect the magnetic field changes of the magnet on the product.

[0026] When the product moves to the detection device, the driver drives the integrated plate 2 to move, thereby driving the detection unit 1 close to the product. The detection unit 1 detects the degree of change in the magnetic field of the approaching product. Since the magnetic field changes of the positive and negative poles of the magnet are different, the detection unit 1 can sense the change in the magnetic field by approaching the magnetic field, and then distinguish whether the side of the magnet away from the product is the positive pole or the negative pole, making the positive and negative detection of the product more convenient and accurate. At the same time, the setting of the integrated plate 2 allows multiple detection units 1 to approach several products at the same time and detect the magnet assembly status of multiple products at the same time, which is conducive to improving the efficiency of the positive and negative detection of the magnet.

[0027] In this embodiment, the driving member includes a driving rod, which is vertically arranged and has a driving cylinder at the top end thereof.

[0028] Reference Figure 1as well as Figure 2 In this embodiment, the detection unit 1 includes a first PCB board 11 and a Hall element 12 provided on the first PCB board 11. The Hall element 12 is provided with a plurality of pieces. The first PCB board 11 is provided on the side of the integrated board 2 away from the driving component. The number of the Hall elements 12 corresponds to the number of magnets on the product.

[0029] Multiple Hall elements 12 share the same first PCB 11 and are connected to the integrated board 2 via this first PCB 11. Due to the product's small size, the size of the Hall elements 12 used for detection is correspondingly reduced, improving the overall component integration while making it easier to install the Hall elements 12 on the integrated board 2. The number of Hall elements 12 is set according to the product, allowing each Hall element 12 to inspect each magnet on the product individually, making the detection unit 1 more accurate in detecting the magnet's positive and negative directions.

[0030] Reference Figure 1 as well as Figure 2 In this embodiment, the integrated board 2 is a second PCB board, and the first PCB board 11 is welded to the second PCB board.

[0031] The first PCB board 11 itself needs to be set on the second PCB board. The connection structure between the second PCB board and the first PCB board 11 can not only play a structural connection role but also a signal transmission role, which is conducive to simplifying the internal structure of the detection unit 1.

[0032] Reference Figure 1 as well as Figure 2 In this embodiment, a gap is left between the first PCB board 11 and the second PCB board.

[0033] Since the height of the product's shell is higher than the installation height of the magnet inside the product, if the detection unit 1 wants to get close to the magnet or even abut against the magnet, it needs to extend into the interior of the magnet. Therefore, the distance between the first PCB board 11 and the second PCB board helps the Hall element 12 move to a position closer to the magnet on the product.

[0034] Reference Figure 1 as well as Figure 2 In this embodiment, a plurality of hard pins 13 are provided on the peripheral wall of the first PCB board 11. The end of the pin 13 away from the first PCB board 11 is plugged and fixed in the second PCB board. The length of the pin 13 provides the length of the distance between the first PCB board 11 and the second PCB board.

[0035] The pin 13 is used to connect and support the first PCB board 11 and can serve as a signal transmission medium between the first PCB board 11 and the second PCB board, further simplifying the overall structure and further improving the overall integration, thereby making it easier to install the Hall element 12.

[0036] Reference Figure 1 as well as Figure 2 In this embodiment, the shape formed by the multiple Hall elements 12 soldered on the first PCB board 11 is the same as the shape of the first PCB board 11, and the multiple Hall elements 12 are distributed at the edges or corners of the first PCB board 11.

[0037] In this embodiment, each first PCB board 11 has four Hall elements 12. The first PCB board 11 is adaptively configured as a quadrilateral, with the four Hall elements 12 located at the four corners of the first PCB board 11. This configuration minimizes the area occupied by the first PCB board 11 on the second PCB board, saving material for the first PCB board 11 while reducing motion interference between the first PCB board 11 and the product housing or adjacent magnets.

[0038] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A magnet front and back detection device, characterized by: It includes multiple detection units and a driving member. The driving member is installed with an integrated plate. Multiple detection units are installed on the side of the integrated plate away from the driving member. The detection units are used to detect the changes in the magnetic field of the magnet on the product.

2. The magnet front and back detection device according to claim 1, characterized in that: The detection unit includes a first PCB board and a Hall element arranged on the first PCB board. The Hall element is provided in a plurality of pieces. The first PCB board is arranged on the side of the integrated board away from the driving component. The number of the Hall elements is set corresponding to the number of magnets on the product.

3. The magnet front and back detection device according to claim 2, characterized in that: The integrated board is a second PCB board, and the first PCB board is welded to the second PCB board.

4. The magnet front and back detection device according to claim 3, characterized in that: A distance is left between the first PCB board and the second PCB board.

5. The magnet front and back detection device according to claim 4, characterized in that: The peripheral wall of the first PCB is provided with a plurality of hard pins. The ends of the pins away from the first PCB are plugged and fixed in the second PCB. The length of the pins provides the length of the distance between the first PCB and the second PCB.

6. The magnet front and back detection device according to claim 4, characterized in that: The shape formed by the multiple Hall elements welded on the first PCB is the same as the shape of the first PCB, and the multiple Hall elements are distributed at the edges or corners of the first PCB.

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