Detection tool for Hall circuit board

Abstract

The utility model discloses a detection tool for a Hall circuit board, which is characterized in that the detection tool comprises a bottom plate and a test part voltage detection indication module, the bottom plate is provided with the voltage detection indication module, the test part comprises a base, a test seat, an elastic test clamp and a detection connection plate, the test seat is rotatably arranged on the base, and the elastic test clamp is arranged on the detection connection plate. The elastic testing clamp is fixedly arranged on the testing seat in an elastic opening and closing mode in the vertical direction and passes through the rotating center of the testing seat, the detection connecting plate is fixedly arranged on an upper clamping piece of the elastic testing clamp and extends out of the front side where the closed end of the elastic testing clamp is located, and a plurality of connecting probes are fixedly arranged on the bottom side of the front end of the detection connecting plate downwards. A detection mounting groove for fixedly placing a Hall circuit board to be tested is formed in the front side of the elastic test clamp on the test seat, and a magnet is fixedly arranged on the base; the Hall circuit board detector has the advantages of simple structure, convenience in operation, stable and reliable detection result, capability of detecting a plurality of Hall circuit boards to be detected in advance and high efficiency.

Description

Technical Field

[0001] The utility model relates to a detection tool, in particular to a detection tool used for a Hall circuit board. Background Art

[0002] The Hall sensor is an integrated sensor composed of a Hall element and its auxiliary circuits, which is based on the Hall effect. It can detect magnetic fields and their changes and can be used in various occasions related to magnetic fields. When welding the Hall sensor, it is impossible to determine whether the Hall element used is normal. Only when it is assembled into a product can it be determined through the use phenomenon; if the Hall element used is abnormal, it will lead to repeated disassembly and assembly, thereby reducing work efficiency. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a detection tool for a Hall circuit board which has a simple structure and a convenient and fast detection process.

[0004] The utility model solves the above technical problems by adopting the following technical scheme: a detection tool for a Hall circuit board, comprising a bottom plate and a test component voltage detection indication module, the bottom plate is provided with a voltage detection indication module, the test component comprises a base, a test seat, an elastic test clip and a detection connection plate, the test seat is rotatably arranged on the base, the elastic test clip is elastically opened and closed in the up and down directions and fixedly arranged on the test seat and passes through the rotation center of the test seat, the detection connection plate is fixedly arranged on the upper clip of the elastic test clip and extends to the front side where the closed end of the elastic test clip is located The front end bottom side of the detection connection plate is fixedly provided with a plurality of connection probes downwardly, the test socket is provided with a detection mounting groove for fixing the Hall circuit board to be tested on the front side of the elastic test clip, the base is fixedly provided with magnets whose number and position correspond to the Hall elements in the Hall circuit board to be tested on the outer side of the test socket, the detection connection plate is used to connect the Hall circuit board to be tested with the voltage detection indication module through the plurality of connection probes and the corresponding number of wires, and the voltage detection indication module is used to display the corresponding voltage detection result through the voltage indication element after normal connection.

[0005] Compared with the prior art, the advantage of the utility model is that when the employee is conducting the test, he presses down the rear end of the elastic test clip, and puts the Hall circuit board to be tested into the test installation slot of the test seat. At this time, the original wiring hole position on the Hall circuit board to be tested is aligned with the connection probe on the detection connection plate, and then the elastic test clip is released to make the connection probe contact with the wiring hole position of the Hall circuit board to be tested, thereby connecting the circuit; the test seat is rotated to make the Hall element in the Hall circuit board to be tested correspond to the position of the corresponding magnet, and the Hall element outputs an induced voltage signal after sensing the magnetic field of the magnet, and the voltage detection indication module displays the corresponding voltage detection result through the voltage indication element, wherein the voltage indication element can be a conventional voltage indication device such as a voltmeter, an indicator light and a speaker that can respond to a voltage signal. The detection result of the Hall element at this time is normal operation; the test socket is rotated to make the Hall circuit board under test away from the magnet. At this time, the Hall element cannot sense the magnetic field and stops outputting signals, and the voltage indicating element stops displaying the corresponding voltage detection result; repeatedly performing the above actions can ensure that the detection result of the Hall circuit board to be tested is accurate; wherein, the wire on the detection connection board can be directly welded to the other end of the conductive sheet electrically connected to the connecting probe at one end, or it can be plugged into the detection connection board by a plug-in combination of a plug and a plug interface, and a connecting pin electrically connected to each connecting probe through a metal conductive sheet is set at the plug interface, and the other end of the wire is also plugged into the bottom plate through the plug-in combination of the plug and the plug interface and electrically connected to the voltage detection indicating module through the metal conductive sheet.

[0006] The entire detection device has a simple structure, is easy to manufacture and install, has a low cost of use, is easy to operate during the detection process, and has stable and reliable detection results. It can quickly and in batches pre-detect the operating conditions of Hall elements in multiple Hall circuit boards to be tested. After passing the detection, the Hall circuit boards can be assembled and used, and the entire processing, detection and assembly process is highly efficient.

[0007] The connection probe includes a power probe, a grounding probe and an output signal probe whose number corresponds to the Hall elements in the Hall circuit board to be tested. The voltage detection indication module includes a DC power supply and detection units corresponding to the number of the Hall elements. Each of the detection units includes an NPN transistor and a voltmeter. The base of the NPN transistor is connected to one end of the voltmeter and the output signal probe. The output signal probe is used to connect the output signal end corresponding to the Hall element in the Hall circuit board to be tested. The other end of the voltmeter and the source of the NPN transistor are connected to the power ground of the DC power supply. The collector of the NPN transistor, the positive end of the DC power supply and the power probe are connected, and the power ground of the DC power supply is connected to the grounding probe. When the Hall element senses the magnetic field of the magnet, it outputs the corresponding induced voltage signal to the base of the NPN transistor. When the Hall element is working normally, the NPN transistor is turned on and the voltmeter reading is low. When the test socket is rotated to make the Hall circuit board to be tested leave the magnet, the Hall element stops outputting the corresponding signal when it cannot sense the magnetic field, the NPN transistor is disconnected, and the voltmeter reading increases significantly. Repeating the above actions can prove that the Hall element is working normally. If the test socket is rotated to align the Hall element with the magnet, the voltmeter reading does not decrease significantly, it means that the Hall element cannot work normally, and the test result of the Hall circuit board to be tested is unqualified. The power module can be introduced by a battery or an external plug plus an adapter.

[0008] The detection unit also includes a detection indicator light, one end of which is connected to the collector of the NPN transistor, and the other end of which is connected to the positive end of the DC power supply. If the Hall element works normally, after the detection connection board is connected to the circuit through each connection probe, the voltage indication number becomes smaller and the indicator light lights up normally; if there is no corresponding change, it means that the Hall element is working abnormally and the detection result is unqualified.

[0009] The upper middle part of the base is recessed with a circular countersunk hole, the test seat is cylindrical, the test seat is rotatably arranged in the circular countersunk hole through a rotating shaft, and a corrugated spring is sleeved on the rotating shaft between the test seat and the base. It is easy to process, manufacture and install, the rotation process is relatively stable, and the reliability of the test result is guaranteed, wherein the base can also be set as a circular ring structure, so as to be easy to process and install.

[0010] The test seat is radially recessed with a strip-shaped installation groove, and the elastic test clip is fixedly embedded in the strip-shaped installation groove. The installation is faster and more convenient, and they are closely attached to each other to ensure the friction between each other, thereby preventing relative movement, and can be connected to the detection installation groove, so that the elastic test clip is located at the lower part of the detection installation groove, and the Hall circuit board to be tested is located at the upper part of the elastic test clip after being placed, which makes it more convenient to connect the probe to find the correct position.

[0011] A limit pin is radially protruding outward on the side wall of the test seat, and a rotation limit block that cooperates with the limit pin is fixedly arranged on the base. When the test seat is rotated until the limit pin is limited by the rotation limit block, the Hall element is aligned with the position of a corresponding magnet. It is convenient to rotate in place, so that the Hall element can find the corresponding magnet position, effectively improving work efficiency; the limit pin plays the role of a rotating handle when rotating, making the operation more convenient and labor-saving.

[0012] An elastic compression spring is arranged between the rear side of the upper clip and the rear side of the lower clip of the elastic test clip. When testing, the rear end of the elastic test clip is pressed down to compress the elastic compression spring, and the Hall circuit board to be tested is placed into the test installation slot of the test socket. At this time, the original wiring hole position of the Hall circuit board to be tested is aligned with the connection probe on the test connection board, and then the elastic test clip is released, the elastic compression spring is reset to close the front end of the elastic test clip, and the connection probe contacts the wiring hole position of the Hall circuit board to be tested to connect the circuit.

[0013] The number of Hall elements in the Hall circuit board to be tested is three, and the number of magnets is three. The Hall element will only send out an induced voltage signal when it is aligned with the magnet and kept within a certain distance. The magnet can be made into a cylindrical structure and embedded in the corresponding installation hole set on the base. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The structure diagram of the test component in the utility model is shown in FIG. Figure 1 ;

[0015] Figure 2 for Figure 1 A top view of the structure;

[0016] Figure 3 The structure diagram of the test component in the utility model is shown in FIG. Figure 2 ;

[0017] Figure 4 It is a top view of the overall structure of the utility model;

[0018] Figure 5 It is a partial structural sectional view of the utility model;

[0019] Figure 6This is a circuit schematic diagram of the utility model. DETAILED DESCRIPTION

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0021] Embodiment 1: A detection tool for a Hall circuit board, comprising a base plate 1 and a test component, wherein a voltage detection indication module is arranged on the base plate 1, and the test component comprises a base 21, a test seat 22, an elastic test clip 23 and a detection connection plate 24, wherein the test seat 22 is rotatably arranged on the base 21, and the elastic test clip 23 is elastically opened and closed in the up and down directions and fixedly arranged on the test seat 22 and passes through the rotation center of the test seat 22, and the detection connection plate 24 is fixedly arranged on the upper clip of the elastic test clip 23 and extends toward the front side where the closed end of the elastic test clip 23 is located, and a plurality of connection probes are fixedly arranged downward on the bottom side of the front end of the detection connection plate 24, and a detection installation groove 221 for fixing and placing the Hall circuit board to be tested is arranged on the test seat 22 at the front side of the elastic test clip 23, and a magnet 25 corresponding in number and position to the Hall element (not shown) in the Hall circuit board to be tested (not shown) is fixedly arranged on the base 21 at the outer side of the test seat 22, and the detection connection plate 24 is used to pass A plurality of connection probes and a corresponding number of wires (not shown) connect the Hall circuit board to be tested and the voltage detection indication module. The voltage detection indication module is used to display the corresponding voltage detection result through the voltage indication element after normal connection. The connection probes include a power probe 31, a grounding probe 32 and an output signal probe 33 whose number corresponds to the Hall elements in the Hall circuit board to be tested. The voltage detection indication module includes a DC power supply DC and detection units corresponding to the number of Hall elements. Each detection unit includes an NPN transistor Q and a voltmeter V. The base of the NPN transistor Q is connected to one end of the voltmeter V and the output signal probe 33. The output signal probe 33 is used to connect the output signal end corresponding to the Hall element in the Hall circuit board to be tested. The other end of the voltmeter V and the source of the NPN transistor Q are connected to the power ground of the DC power supply DC. The collector of the NPN transistor Q, the positive end of the DC power supply DC and the power probe 31 are connected. The power ground of the DC power supply DC is connected to the grounding probe 32.

[0022] Embodiment 2: The rest of the parts are the same as Embodiment 1, except that the detection unit further includes a detection indicator light LD, one end of the detection indicator light LD is connected to the collector of the NPN transistor Q, and the other end of the detection indicator light LD is connected to the positive end of the DC power supply DC.

[0023] Embodiment 3: The rest of the parts are the same as Embodiment 1, with the difference being that a circular countersunk hole 211 is recessed in the middle of the upper part of the base 21, the test seat 22 is cylindrical, the test seat 22 is rotatably arranged in the circular countersunk hole 211 via a rotating shaft 26, a corrugated spring piece 27 is sleeved on the rotating shaft 26 between the test seat 22 and the base 21, a strip mounting groove 222 is radially recessed on the test seat 22, and an elastic test clip 23 is fixedly embedded in the strip mounting groove 222.

[0024] Embodiment 4: The rest of the parts are the same as Embodiment 3, except that a limit pin 41 is provided on the side wall of the test seat 22 to protrude radially outward, and a rotating limit block 42 that cooperates with the limit pin 41 is fixedly provided on the base 21. When the test seat 22 rotates until the limit pin 41 is limited by the rotating limit block 42, the Hall element is aligned with the position of a corresponding magnet 25.

[0025] When conducting the test, the employee presses down the rear end of the elastic test clip 23, and puts the Hall circuit board to be tested into the detection installation slot 221 of the test socket 22. At this time, the original wiring holes on the Hall circuit board to be tested are aligned with the connection probes on the detection connection board 24, and then the elastic test clip 23 is released to make the connection probes contact with the wiring holes of the Hall circuit board to be tested to connect the circuit; the test socket 22 is rotated to make the Hall element in the Hall circuit board to be tested correspond to the position of the corresponding magnet 25, and the Hall element outputs an induced voltage signal after sensing the magnetic field of the magnet 25, and the voltage detection indication module displays the corresponding voltage detection result through the voltage indication element, wherein the voltage indication element can be a conventional voltage indication device such as a voltmeter V, an indicator light and a speaker that can respond to a voltage signal, indicating that the detection result of the Hall element at this time is normal operation; the test socket 22 is rotated to make the Hall circuit board to be tested away from the magnet 25, and at this time the Hall element stops outputting signals when it cannot sense the magnetic field, and the voltage indication element stops displaying the corresponding voltage detection result; repeatedly performing the above actions can ensure that the detection result of the Hall circuit board to be tested is accurate.

Claims

1. A detection tool for a Hall circuit board, characterized in that The invention comprises a bottom plate and a test component voltage detection indicating module, wherein the bottom plate is provided with the voltage detection indicating module, the test component comprises a base, a test seat, an elastic test clip and a detection connection plate, the test seat is rotatably arranged on the base, the elastic test clip is elastically opened and closed in the up-down direction and fixedly arranged on the test seat and passes through the rotation center of the test seat, the detection connection plate is fixedly arranged on the upper clip of the elastic test clip and extends to the front side where the closed end of the elastic test clip is located, a plurality of connection probes are fixedly arranged downward on the bottom side of the front end of the detection connection plate, a detection installation groove for fixing and placing a Hall circuit board to be tested is arranged on the test seat at the front side of the elastic test clip, a magnet corresponding in number and position to the Hall element in the Hall circuit board to be tested is fixedly arranged on the outside of the test seat on the base, the detection connection plate is used to connect the Hall circuit board to be tested with the voltage detection indicating module through a plurality of connection probes and a corresponding number of wires, and the voltage detection indicating module is used to display the corresponding voltage detection result through the voltage indicating element after normal connection.

2. The detection tool for Hall circuit board according to claim 1, characterized in that The connection probe includes a power probe, a grounding probe and an output signal probe whose number corresponds to the Hall elements in the Hall circuit board to be tested. The voltage detection indication module includes a DC power supply and detection units corresponding to the number of the Hall elements. Each of the detection units includes an NPN transistor and a voltmeter. The base of the NPN transistor is connected to one end of the voltmeter and the output signal probe. The output signal probe is used to connect the output signal end corresponding to the Hall element in the Hall circuit board to be tested. The other end of the voltmeter and the source of the NPN transistor are connected to the power ground of the DC power supply. The collector of the NPN transistor, the positive end of the DC power supply and the power probe are connected, and the power ground of the DC power supply is connected to the grounding probe.

3. A detection tool for a Hall circuit board according to claim 2, characterized in that The detection unit also includes a detection indicator light, one end of which is connected to the collector of the NPN transistor, and the other end of which is connected to the positive end of the DC power supply.

4. The detection tool for Hall circuit board according to claim 1, characterized in that A circular countersunk hole is recessed in the middle of the upper portion of the base. The test seat is cylindrical. The test seat is rotatably arranged in the circular countersunk hole via a rotating shaft. A corrugated spring piece is sleeved on the rotating shaft between the test seat and the base.

5. The detection tool for Hall circuit board according to claim 4, characterized in that The test seat is radially recessed with a strip-shaped installation groove, and the elastic test clip is fixedly embedded in the strip-shaped installation groove.

6. The detection tool for Hall circuit board according to claim 4, characterized in that A limit pin is provided on the side wall of the test seat protruding radially outward, and a rotation limit block cooperating with the limit pin is fixedly provided on the base. When the test seat is rotated until the limit pin is limited by the rotation limit block, the Hall element is aligned with the position of a corresponding magnet.

7. The detection tool for Hall circuit board according to claim 1, characterized in that An elastic compression spring is arranged between the rear side of the upper clamping piece and the rear side of the lower clamping piece of the elastic test clamp.

8. The detection tool for Hall circuit board according to claim 1, characterized in that The number of the Hall elements in the Hall circuit board to be tested is three, and the number of the magnets is three.

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