Device and method for detecting, clamping and electrically connecting potentiometer

Abstract

The invention belongs to the technical field of potentiometer detection, and discloses a device and method for detecting, clamping and electrically connecting potentiometers, the device comprises a base station, the top of the base station is fixedly provided with a first fixing plate, a second fixing plate and a third fixing plate from left to right, and the left side wall of the first fixing plate is fixedly provided with a motor; an output shaft of the motor penetrates to the right side of the first fixing plate and is fixedly provided with a coupler. The device is provided with the angle dial and the pointer, a worker can conveniently and accurately read the position of the potentiometer, the detection precision and reliability are improved, meanwhile, conduction is conducted in the mode that the spring ejector pin is elastically connected with the potentiometer binding post, manual direct contact with the potentiometer is not needed, the risk that manual operation causes damage to the potentiometer is effectively avoided, and the working efficiency is improved. In addition, through the design of the base, the problem of burning loss of the potentiometer caused by wrong wiring when the potentiometer is connected with the detection device is effectively avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of potentiometer detection, and in particular relates to a device and method for detecting a clamped and electrically connected potentiometer. Background Art

[0002] Potentiometer is a commonly used sensor, widely used in various measurement and control systems. It is a variable resistor whose resistance value can be adjusted mechanically. It has a wide range of applications, including audio and video equipment, computers, communication equipment, automotive electronics, medical equipment, etc. During the production and use of potentiometers, they need to be strictly tested to ensure that their performance meets the design requirements.

[0003] At present, when testing potentiometers, a multimeter or resistance tester is usually used to measure the change in resistance value. At this time, the staff is required to rotate the knob of the potentiometer or slide the slider. When the knob is rotated or the slider is slid, the position of the sliding contact on the resistor element changes, thereby changing the resistance value between the middle pin and the two end pins, further achieving the purpose of detection.

[0004] However, traditional detection devices usually require that the rotation angle and displacement are difficult to accurately control when rotating the potentiometer's knob or sliding the slider, resulting in low test accuracy, low efficiency, and difficulty in achieving batch detection. On the other hand, the subjectivity and instability of manual operation may lead to inconsistent test results and may even cause mechanical damage to the potentiometer, affecting its performance and service life. More importantly, the smoothness of the potentiometer is an important indicator to measure whether there is a jump or mutation during the adjustment process of the potentiometer, which directly affects the user experience and product quality. The current device cannot accurately detect the smoothness line of the potentiometer, so it needs to be improved and optimized. Summary of the invention

[0005] The object of the present invention is to provide a device and method for detecting clamping and electrically connecting a potentiometer, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device and method for detecting clamping and electrically connecting a potentiometer, comprising a base, a first fixing plate, a second fixing plate and a third fixing plate are fixedly installed on the top of the base from left to right, a motor is fixedly installed on the left side wall of the first fixing plate, the output shaft of the motor passes through the right side of the first fixing plate and is fixedly installed with a coupling, a chuck is fixedly installed on the right side of the coupling, a pointer is fixedly installed on the outer wall of the chuck, a slot is fixedly opened on the right side of the second fixing plate, and a screw wrench is threadedly sleeved on the top of the third fixing plate;

[0007] A potentiometer is clamped on the right side of the slot, three groups of terminals are arranged on the top of the potentiometer, a base is arranged between the potentiometer and the screw wrench, a step hole is opened on the left side of the base, a blind hole is opened in the middle of the step hole, a notch is opened on the top edge of the step hole, three groups of round holes are evenly opened inside the notch, ejectors are arranged inside the three groups of round holes, and each group of ejectors abuts against the terminals.

[0008] Preferably, a docking port is provided on the right side of the chuck, a mandrel is provided in the middle of the potentiometer, one end of the mandrel and the chuck are transmission-connected via the docking port, and the other end of the mandrel is movably mounted inside the blind hole.

[0009] Preferably, a positioning hole is opened on the right side of the base, and the left end of the screw wrench and the positioning hole abut against each other.

[0010] Preferably, a sleeve is fixedly installed inside the circular hole, and the ejector pin is movably installed inside the sleeve.

[0011] Preferably, the right end of the ejector pin and the sleeve are elastically connected via a spring, and the left end of the ejector pin and the terminal are in contact with each other.

[0012] Preferably, a dial is rotatably mounted on the left side of the second fixed plate, the dial and the second fixed plate are locked by screws, and the 0 position of the dial and the pointer are aligned with each other.

[0013] Preferably, the base is made of nylon, and a cable is welded to the right end of the ejector pin, and the other end of the cable is respectively connected to a pointer voltmeter, a digital multimeter, and a DC power supply.

[0014] Preferably, the method of using the device is:

[0015] S1, before testing, the staff first rotates the dial to align the 0 position and the pointer on the dial with each other, and then fixes the dial and the second fixing plate with screws;

[0016] S2, then assemble the potentiometer and the base. First, the staff aligns the terminal on the top of the potentiometer with the top pin respectively. After alignment, the left end of the potentiometer is inserted into the slot, and the right end of the potentiometer is inserted into the step hole.

[0017] S3, at this time, the staff can press the base with one hand to ensure that the base and the second fixing plate clamp the potentiometer, and turn the screw wrench with the other hand to move the screw wrench to the left;

[0018] S4, as the screw wrench moves to the left, the left end of the screw wrench abuts against the positioning hole, and the base further fixes the potentiometer between the second fixing plate and the base through the leftward force provided by the screw wrench;

[0019] S5, after the fixation is completed, one end of the mandrel is located in the blind hole, and the other end is located inside the docking port, and the ejector pin abuts against the terminal through the elastic potential energy of the spring to achieve electrical conduction;

[0020] S6, further, the staff turns on the test power supply, and starts the motor through the motor controller so that the output shaft of the motor drives the chuck and the pointer to rotate. The rotation of the pointer on the dial surface facilitates the staff to accurately read the rotation angle and displacement of the potentiometer, and the rotation of the chuck drives the spindle to rotate;

[0021] S7, when the spindle rotates, the resistance inside the potentiometer changes, and the staff detects the potentiometer through the measuring device connected by the ejector pin;

[0022] S8. The staff observes the voltage linearity of the multimeter. As the spindle rotates, the needle of the pointer voltmeter moves at a constant speed, and the potentiometer is judged to be qualified. If the potentiometer voltage is interrupted, fluctuates, does not change with the angle, and does not reach the voltage upper limit, the potentiometer is judged to be unqualified.

[0023] The beneficial effects of the present invention are as follows:

[0024] The present invention uses a motor controller to accurately control the rotation angle or displacement of the potentiometer, and is equipped with an angle dial and a pointer, which can facilitate the staff to accurately read the position of the potentiometer, thereby improving the detection accuracy and reliability. At the same time, a spring ejector and a potentiometer terminal are elastically connected to conduct electricity, without the need for direct manual contact with the potentiometer, thereby effectively avoiding the risk of damage to the potentiometer caused by manual operation. In addition, the device fixes the potentiometer in the step hole through the design of the base, and connects it to the terminal through the spring ejector, thereby effectively avoiding the problem of burning the potentiometer due to miswiring when connecting the potentiometer to the detection device. Finally, the chuck drives the spindle to rotate smoothly and at a uniform speed, so that the staff can detect the smooth line of the potentiometer through a pointer voltmeter and a digital multimeter, thereby ensuring the quality of detection and improving the efficiency of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the chuck structure of the present invention;

[0027] Figure 3 It is a schematic diagram of the mandrel structure of the present invention;

[0028] Figure 4 This is a schematic diagram of the base structure of the present invention;

[0029] Figure 5 This is a schematic diagram of the blind hole structure of the present invention;

[0030] Figure 6 This is a schematic diagram of the ejector structure of the present invention;

[0031] Figure 7 It is a schematic diagram of the card slot structure of the present invention.

[0032] In the figure: 1, base; 2, first fixed plate; 3, motor; 4, motor controller; 5, coupling; 6, chuck; 7, pointer; 8, second fixed plate; 9, dial; 10, slot; 11, third fixed plate; 12, screw wrench; 13, base; 14, step hole; 15, blind hole; 16, round hole; 17, sleeve; 18, ejector pin; 19, spring; 20, potentiometer; 21, spindle; 22, terminal; 23, docking port; 24, notch; 25, positioning hole. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] like Figures 1 to 7 As shown, an embodiment of the present invention provides a device and method for detecting clamping and electrically connecting a potentiometer, comprising a base 1, a first fixing plate 2, a second fixing plate 8 and a third fixing plate 11 are fixedly installed on the top of the base 1 from left to right, a motor 3 is fixedly installed on the left side wall of the first fixing plate 2, an output shaft of the motor 3 passes through the right side of the first fixing plate 2 and is fixedly installed with a coupling 5, a chuck 6 is fixedly installed on the right side of the coupling 5, a pointer 7 is fixedly installed on the outer wall of the chuck 6, a slot 10 is fixedly opened on the right side of the second fixing plate 8, and a screw wrench 12 is threadedly sleeved on the top of the third fixing plate 11;

[0035] A potentiometer 20 is clamped on the right side of the slot 10, and three groups of terminals 22 are arranged on the top of the potentiometer 20. A base 13 is arranged between the potentiometer 20 and the screw wrench 12. A step hole 14 is opened on the left side of the base 13, a blind hole 15 is opened in the middle of the step hole 14, a notch 24 is opened on the top edge of the step hole 14, and three groups of round holes 16 are evenly opened inside the notch 24. Ejectors 18 are arranged inside the three groups of round holes 16, and each group of ejectors 18 abuts against the terminals 22.

[0036] The rotation angle or displacement of the potentiometer is accurately controlled by the motor controller, and an angle dial and a pointer are provided, so that the staff can read the position of the potentiometer accurately and improve the detection accuracy and reliability. At the same time, the spring ejector and the potentiometer terminal are elastically connected to conduct electricity, and there is no need for direct manual contact with the potentiometer, which effectively avoids the risk of damage to the potentiometer caused by manual operation. In addition, the device fixes the potentiometer in the step hole through the design of the base and connects it to the terminal through the spring ejector, which effectively avoids the problem of burning the potentiometer due to miswiring when connecting the potentiometer to the detection device. Finally, the chuck 6 drives the spindle 21 to rotate smoothly and evenly, so that the staff can detect the smooth line of the potentiometer 20 through a pointer voltmeter and a digital multimeter, thereby ensuring the quality of detection and improving the efficiency of detection.

[0037] A docking port 23 is provided on the right side of the chuck 6 , a spindle 21 is provided in the middle of the potentiometer 20 , one end of the spindle 21 is transmission-connected to the chuck 6 via the docking port 23 , and the other end of the spindle 21 is movably installed inside the blind hole 15 .

[0038] Since one end of the spindle 21 and the chuck 6 are connected via the docking port 23, the spindle 21 rotates synchronously when the chuck 6 rotates. Furthermore, since the internal resistance of the potentiometer 20 is adjusted through the spindle 21 when it changes, the staff can detect the potentiometer 20 by rotating the spindle 21.

[0039] A positioning hole 25 is formed on the right side of the base 13 , and the left end of the screw wrench 12 abuts against the positioning hole 25 .

[0040] By setting the positioning hole 25, the screw wrench 12 will move to the left when rotating. As the screw wrench 12 moves to the left, the screw wrench 12 will eventually abut against the positioning hole 25. The setting of the positioning hole 25 can ensure that the base 13 and the screw wrench 12 are aligned with each other, and there will be no offset problem during clamping.

[0041] A sleeve 17 is fixedly installed inside the circular hole 16 , and a ejector pin 18 is movably installed inside the sleeve 17 .

[0042] The right end of the ejector pin 18 and the sleeve 17 are elastically connected via a spring 19 , and the left end of the ejector pin 18 and the terminal 22 are in contact with each other.

[0043] When the base 13 moves to the left, the ejector pin 18 and the terminal 22 will contact each other. As the base 13 continues to move to the left, the ejector pin 18 will be pushed to the right by the terminal 22. The elastic potential energy of the spring 19 ensures that the ejector pin 18 and the terminal 22 fit tightly and conduct electricity reliably.

[0044] A dial 9 is rotatably mounted on the left side of the second fixed plate 8 , and the dial 9 and the second fixed plate 8 are locked by screws, so that the 0 position of the dial 9 and the pointer 7 are aligned with each other.

[0045] Through the rotation setting of the dial 9, the staff can rotate the dial 9 after each test to ensure that the dial 9 and the pointer 7 are aligned, and then fixed by screws, the structure is simple and easy to operate.

[0046] The base 13 is made of nylon, and a cable is welded to the right end of the ejector pin 18, and the other end of the cable is respectively connected to a pointer voltmeter, a digital multimeter, and a DC power supply.

[0047] While realizing reliable electrical conduction, the ejector pin 18 is respectively connected to two sets of meters and a power supply for detection, thereby further realizing the detection operation of the potentiometer 20 .

[0048] The method of using the device is as follows:

[0049] S1, before testing, the staff first rotates the dial 9 to align the 0 position on the dial 9 and the pointer 7 with each other, and then fixes the dial 9 and the second fixing plate 8 with screws;

[0050] Through this step, it is convenient for the staff to accurately read the rotation angle and displacement of the potentiometer spindle 21;

[0051] S2, then assemble the potentiometer 20 and the base 13. First, the staff aligns the terminal 22 on the top of the potentiometer 20 with the ejector pin 18 respectively, and then snaps the left end of the potentiometer 20 into the slot 10, and then snaps the right end of the potentiometer 20 into the step hole 14;

[0052] S3, at this time, the staff can press the base 13 with one hand to ensure that the base 13 and the second fixing plate 8 are clamped and fixed to the potentiometer 20, and turn the screw wrench 12 with the other hand to move the screw wrench 12 to the left;

[0053] S4, as the screw wrench 12 moves to the left, the left end of the screw wrench 12 abuts against the positioning hole 25, and the base 13 further fixes the potentiometer 20 between the second fixing plate 8 and the base 13 through the leftward force provided by the screw wrench 12;

[0054] S5, after the fixation is completed, one end of the mandrel 21 is located in the blind hole 15, and the other end thereof is located inside the docking port 23, and the ejector pin 18 abuts against the terminal 22 through the elastic potential energy of the spring 19 to achieve electrical conduction;

[0055] S6, further, the staff turns on the test power supply, and starts the motor 3 through the motor controller 4 so that the output shaft of the motor 3 drives the chuck 6 and the pointer 7 to rotate. The rotation of the pointer 7 on the surface of the dial 9 facilitates the staff to accurately read the rotation angle and displacement of the potentiometer, and the rotation of the chuck 6 drives the spindle 21 to rotate;

[0056] S7, when the spindle 21 rotates, the resistance inside the potentiometer 20 changes, and the staff detects the potentiometer 20 through the measuring device connected to the ejector pin 18;

[0057] S8, the staff observes the voltage linearity of the multimeter. As the spindle 21 rotates, the needle of the pointer voltmeter moves at a constant speed, and the potentiometer is judged to be qualified; if the potentiometer voltage is interrupted, fluctuates, does not change with the angle, and does not reach the voltage upper limit, the potentiometer is judged to be unqualified.

[0058] Here, the three groups of ejector pins 18 are respectively set as ejector pin one, ejector pin two and ejector pin three from front to back, wherein ejector pin one and three are interconnected with the power supply, and ejector pin two and ejector pin three are connected to the pointer voltmeter and the digital multimeter. When the spindle 21 rotates at a uniform and stable speed, the resistance inside the potentiometer 20 should rise smoothly. At this time, if the potentiometer voltage is interrupted, fluctuates, and does not change with the angle, it means that the potentiometer 20 is unqualified.

[0059] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0060] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for detecting clamping and electrically connecting a potentiometer, comprising a base (1), characterized in that: The top of the base (1) is fixedly installed with a first fixing plate (2), a second fixing plate (8) and a third fixing plate (11) from left to right, respectively; a motor (3) is fixedly installed on the left side wall of the first fixing plate (2); the output shaft of the motor (3) passes through the right side of the first fixing plate (2) and is fixedly installed with a coupling (5); a chuck (6) is fixedly installed on the right side of the coupling (5); a pointer (7) is fixedly installed on the outer wall of the chuck (6); a slot (10) is fixedly opened on the right side of the second fixing plate (8); and a screw wrench (12) is threadedly sleeved on the top of the third fixing plate (11); A potentiometer (20) is clamped on the right side of the clamping slot (10), three groups of terminal posts (22) are arranged on the top of the potentiometer (20), a base (13) is arranged between the potentiometer (20) and the screw wrench (12), a step hole (14) is opened on the left side of the base (13), a blind hole (15) is opened in the middle of the step hole (14), a notch (24) is opened on the top edge of the step hole (14), three groups of round holes (16) are evenly opened inside the notch (24), ejector pins (18) are arranged inside the three groups of round holes (16), and each group of ejector pins (18) abuts against the terminal posts (22).

2. A device for detecting clamping and electrically connecting a potentiometer according to claim 1, characterized in that: A docking port (23) is provided on the right side of the chuck (6), a spindle (21) is provided in the middle of the potentiometer (20), one end of the spindle (21) is transmission-connected to the chuck (6) via the docking port (23), and the other end of the spindle (21) is movably mounted inside the blind hole (15).

3. A device for detecting clamping and electrically connecting a potentiometer according to claim 1, characterized in that: A positioning hole (25) is provided on the right side of the base (13), and the left end of the screw wrench (12) and the positioning hole (25) are in contact with each other.

4. A device for detecting clamping and electrically connecting a potentiometer according to claim 1, characterized in that: A sleeve (17) is fixedly installed inside the circular hole (16), and the ejector pin (18) is movably installed inside the sleeve (17).

5. A device for detecting clamping and electrically connecting a potentiometer according to claim 1, characterized in that: The right end of the ejector pin (18) and the sleeve (17) are elastically connected via a spring (19), and the left end of the ejector pin (18) and the terminal (22) are in contact with each other.

6. A device for detecting clamping and electrically connecting a potentiometer according to claim 1, characterized in that: A dial (9) is rotatably mounted on the left side of the second fixed plate (8), the dial (9) and the second fixed plate (8) are locked by screws, and the 0 position of the dial (9) and the pointer (7) are aligned with each other.

7. A device for detecting clamping and electrically connecting a potentiometer according to claim 1, characterized in that: The base (13) is made of nylon, and a cable is welded to the right end of the ejector pin (18), and the other end of the cable is respectively connected to a pointer voltmeter, a digital multimeter, and a DC power supply.

8. A method for detecting clamping and electrically connecting a potentiometer according to claim 1, characterized in that: The method of using the device is: S1, before testing, the staff first rotates the dial (9) to align the 0 position on the dial (9) and the pointer (7) with each other, and then fixes the dial (9) and the second fixing plate (8) with screws; S2, then assemble the potentiometer (20) and the base (13), first the staff aligns the terminal (22) on the top of the potentiometer (20) with the ejector pin (18), and after alignment, snaps the left end of the potentiometer (20) into the slot (10), and snaps the right end of the potentiometer (20) into the step hole (14); S3, at this time, the staff can press the base (13) with one hand to ensure that the base (13) and the second fixing plate (8) clamp the potentiometer (20), and use the other hand to rotate the screw wrench (12) to move the screw wrench (12) to the left; S4, as the screw wrench (12) moves to the left, the left end of the screw wrench (12) abuts against the positioning hole (25), and the base (13) further fixes the potentiometer (20) between the second fixing plate (8) and the base (13) through the leftward force provided by the screw wrench (12); S5, after the fixation is completed, one end of the mandrel (21) is located in the blind hole (15), and the other end thereof is located inside the docking port (23), and the ejector pin (18) abuts against the terminal (22) through the elastic potential energy of the spring (19), thereby achieving electrical conduction; S6, further, the staff turns on the test power supply, and starts the motor (3) through the motor controller (4) so ​​that the output shaft of the motor (3) drives the chuck (6) and the pointer (7) to rotate, and the rotation of the pointer (7) on the surface of the dial (9) facilitates the staff to accurately read the rotation angle and displacement of the potentiometer, and the rotation of the chuck (6) drives the spindle (21) to rotate; S7, when the spindle (21) rotates, the resistance inside the potentiometer (20) changes, and the staff detects the potentiometer (20) through a measuring device connected to the ejector pin (18); S8, the staff observes the voltage linearity of the multimeter. As the spindle (21) rotates, the needle of the pointer-type voltmeter moves at a constant speed, and the potentiometer is judged to be qualified; if the potentiometer voltage is interrupted, fluctuates, does not change with the angle, and does not reach the voltage upper limit value, the potentiometer is judged to be unqualified.

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