Multi-parameter test fixture for rotary potentiometer

Abstract

The utility model relates to the field of electrical component detection, in particular to an auxiliary device for electrical component detection, and more particularly relates to a rotary potentiometer multi-parameter test fixture, which comprises a sample supporting seat, a first fastener, a second fastener, a first fastener fixing seat and a first locking piece, a fixing shaft with anti-skid bulges on the inner wall is arranged in the second adjusting through groove, so that a shaft fixing groove with a large inlet and a small outlet is formed; the device further comprises a transmission shaft and a rotating motor, and the transmission shaft is connected with the rotating motor and the second fastener, so that the second fastener is driven by the rotating motor to rotate. The rotary potentiometer multi-parameter test fixture disclosed by the utility model is simple in structure, simple in sample fixing operation during test and good in fixing effect, and ensures the rotation angle of the actuator by accurately controlling the accuracy of the rotation angle of the sample actuator so as to reduce test errors and improve the test automation level and the test result reliability.

Description

Technical Field

[0001] The present invention relates to the field of electrical component detection, particularly to an auxiliary device for electrical component detection, and more specifically to a multi-parameter test fixture for a rotary potentiometer. Background Art

[0002] A potentiometer is a resistive element with three leads and a resistance value that can be adjusted according to a certain variation law. The potentiometer can be used as a three-terminal element or a two-terminal element (the latter can be regarded as a variable resistor). Since its function in the circuit is to obtain an output voltage that has a certain relationship with the input voltage (applied voltage), it is called a potentiometer.

[0003] A rotary potentiometer generally includes a saddle-shaped resistor body, a sliding arm, a sliding end (or called a contact, a brush), a rotating shaft, a rotating handle, solder pads, etc. When the sliding end slides on the saddle-shaped resistor body, the distance from the two ends of the saddle-shaped resistor body changes, thereby causing the resistance value to change, achieving the effect of converting mechanical rotation into a level pulse signal. This kind of rotary potentiometer has a wide range of applications in electrical appliances, such as lamps that can adjust light intensity and light temperature, and operation joysticks of game consoles, etc.

[0004] In the patent document CN 113617702B, an automatic detection device for a potentiometer is disclosed, which includes a test box, a base, and a test component. The base is arranged on the inner bottom wall of the test box, and the test component is arranged on the inner top wall of the test box. The base includes a turntable, a clamping member, and a support seat. One end of the turntable is fixed to the inner bottom wall of the test box, the support seat is fixed to the free end of the turntable, the clamping member is fixed on the support seat, and wiring components are arranged on both sides of the support seat.

[0005] In order to simulate the application of a rotary potentiometer in the scenario where a user uses an operation remote control to control the potentiometer in actual application, this structure shakes and rotates the free end of the potentiometer in multiple directions through the test component at the top. However, this method actually sacrifices the accuracy in rotation simulation. For application scenarios without vibration, the detection accuracy can be further improved through structural modification. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a multi-parameter test fixture for a rotary potentiometer that can accurately adjust the rotation angle of the rotary potentiometer brake, thereby being able to stabilize the rotary potentiometer, ensure the stability and accuracy of rotation, reduce test errors, and improve the accuracy and precision of detection results.

[0007] To solve the above technical problems, the present invention discloses a multi-parameter test fixture for a rotary potentiometer, which includes a specimen support base, a first fastener, and a second fastener. A specimen card slot for placing and accommodating the rotary potentiometer is provided on the specimen support base. The first fastener and the second fastener are respectively arranged at both ends of the specimen support base. The test fixture further includes a first fastener fixing base and a first locking member. A first adjustment through slot is provided on the first fastener fixing base. The first fastener passes through the first adjustment through slot, and the first locking member is arranged above the first adjustment through slot and passes through the first fastener fixing base. Thus, the first fastener can be fixed to the first fastener fixing base by screwing it up and down. A second adjustment through slot is provided inside the second fastener, and a fixed shaft with anti-slip protrusions on its inner wall is arranged in the second adjustment through slot, forming a shaft fixing slot with a large inlet and a small outlet. The test fixture further includes a transmission shaft and a rotating motor. The transmission shaft connects the rotating motor and the second fastener, so that the second fastener rotates driven by the rotating motor.

[0008] In the present invention, the first fastener abuts against the end face of the rotary potentiometer, and the second fastener forms a coaxial rotation form with the rotary potentiometer. Then, by using the rotating motor and the transmission shaft, the second fastener and the rotary potentiometer shaft are synchronized to rotate. Here, the rotation angle and rotation speed of the shaft are controlled by the rotating motor. Therefore, the accuracy of the rotation angle of the specimen actuator can be accurately controlled, the rotation angle of the actuator can be ensured to reduce the test error, and the test automation level can be improved. Thus, various resistance values of the rotary potentiometer can be simulated as needed, and the test efficiency can be improved.

[0009] In the present invention, we utilize the shaft fixing slot with a large inlet and a small outlet provided inside the second fastener, so that the shaft can be engaged with the anti-slip protrusions with a suitable outer diameter through the depth of the shaft, thereby realizing the fixation of the shaft of the rotary potentiometer and the second fastener. At the same time, compared with other methods, this method is more convenient and fast. When the rotary potentiometer needs to be removed, only the cooperation depth between the second fastener and the shaft needs to be adjusted to release the lock between the second fastener and the shaft, so that the shaft of the rotary potentiometer can be removed from the second fastener.

[0010] Further preferably, it further includes a sliding adjustment device for the specimen support seat. The sliding adjustment device includes a sliding base, a sliding rod, and a sliding adjustment spring. The sliding rod is fixed to the sliding base parallel to the first fastener. The sliding adjustment spring is sleeved on the sliding rod respectively, and both ends are fixed to the specimen support seat and the sliding base respectively. A through hole matching the sliding rod is formed at the bottom of the specimen support seat, and the specimen support seat is slidably mounted on the sliding rod through the through hole. It further includes a second locking member, and the second locking member is a bolt with an operating head. Screw holes matching the bolt are formed on the sliding base and the specimen support seat. The second locking member passes through the sliding base, and its top is inserted into the screw hole of the specimen support seat.

[0011] The position of the specimen support seat can be adjusted through the sliding adjustment device, making the experimental operation more convenient.

[0012] Further preferably, the cross-section of the anti-slip protrusion is several concentric circular fan shapes.

[0013] Further preferably, the number of the anti-slip protrusions is eight, and they are evenly distributed within the fixed shaft.

[0014] We find that the anti-slip protrusions with eight in number and concentric circular fan-shaped cross-sections have good effects and advantages in both adjusting the depth and locking effect.

[0015] Further preferably, it further includes a moving adjustment device for the sliding adjustment device. The moving adjustment device includes a test platform and a platform fixed seat fixed on the test platform. A through hole matching the sliding rod is formed on the sliding base, and the sliding rod extends and is fixed to the platform fixed seat. It further includes a moving adjustment spring. The moving adjustment spring is sleeved on the sliding rod, and both ends are fixed to the sliding base and the platform fixed seat respectively.

[0016] For those skilled in the art, we can understand that both the sliding base and the platform fixed seat include two front and rear ones. The sliding rod is fixed to the sliding base, or the sliding rod is fixed to the platform fixed seat, thus forming a slidable track. When the specimen support seat slides, its sliding range is between the two sliding bases. We can form a restoring force on the specimen support seat by setting a sliding adjustment spring between the sliding base and the specimen support seat, so that it is affected by the restoring force during adjustment and has a better adjustment effect. When the sliding adjustment device slides, its sliding range is between the two platform fixed seats. We can form a restoring force on the sliding adjustment device by setting a moving adjustment spring between the sliding base and the platform fixed seat, so that it is affected by the restoring force during movement and thus has a better adjustment effect.

[0017] Finally, the present invention further preferably discloses that it further includes a rotating handle, and the rotating handle is arranged on the transmission shaft. This provides a basis for manually controlling the shaft of the rotary potentiometer. In some test items, we may need to manually adjust the rotation of the shaft. At this time, without starting the motor, the transmission shaft is rotated by using the manual handle, and then the rotation of the second fastener is controlled, thereby driving the rotation of the shaft of the rotary potentiometer, and thus completing the test item.

[0018] The multi-parameter test fixture for the rotary potentiometer disclosed by the present invention has a simple structure. During the test, the fixing operation of the specimen is simple, and the fixing effect is good. By precisely controlling the accuracy of the rotation angle of the specimen actuator and ensuring the rotation angle of the actuator to reduce the test error, the test automation level and the reliability of the test results are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the top view angle of the multi-parameter test device for the rotary potentiometer.

[0020] Figure 2 It is a schematic diagram of the side view angle of the multi-parameter test fixture for the rotary potentiometer.

[0021] Figure 3 It is a schematic diagram of the second fastener. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following further describes in detail the embodiments of the present utility model in conjunction with the drawings and embodiments. Embodiment 1

[0023] As Figure 1 and Figure 2 shown in the multi-parameter test fixture for the rotary potentiometer, it includes a specimen support base 1, a first fastener 2, and a second fastener 3. A specimen card slot 4 for placing and accommodating the rotary potentiometer is provided on the specimen support base. The first fastener 2 and the second fastener 3 are respectively arranged at both ends of the specimen support base 1; it further includes a first fastener fixing base 5 and a first locking member 6. A first adjustment through slot is provided on the first fastener fixing base 5. The first fastener passes through the first adjustment through slot, as Figure 1 and Figure 2 shown in, in combination with Figure 2 viewed, the first locking member 6 is arranged above the first adjustment through slot and passes through the first fastener fixing base 5; thus, the first fastener 2 can be fixed to the first fastener fixing base 5 by tightening up and down; hereinafter, we further combine Figure 3As shown, a second adjustment through groove is formed inside the second fastener 3, and a fixed shaft 7 with anti-slip protrusions on its inner wall is arranged in the second adjustment through groove, forming a shaft fixing groove 8 with a large inlet and a small outlet; a transmission shaft 10 and a rotation motor 11 are further included, and the transmission shaft 10 connects the rotation motor 11 and the second fastener 3, so that the second fastener rotates driven by the rotation motor.

[0024] Further preferably, in this embodiment, the rotary potentiometer multi-parameter test fixture we disclose further includes a sliding adjustment device for the sample support seat 1. The sliding adjustment device includes a sliding base 12, a sliding rod 13, and a sliding adjustment spring 14. As Figure 1 and Figure 2 shown, the sliding rod 13 is fixed on the sliding base 12 parallel to the first fastener 2. The sliding adjustment spring 14 is sleeved on the sliding rod 13 respectively, and both ends of the sliding adjustment spring 14 are fixed on the sample support seat 1 and the sliding base 12 respectively. In order to be able to slide back and forth on the sliding rod 13, the sample support seat 1 is formed with through holes matching the sliding rod at the bottom and is slidably installed on the sliding rod through the through holes, as Figure 1 and Figure 2 shown; a second locking member 15 is further included. The second locking member 15 is a bolt with an operating head. Threaded holes matching the bolt are formed on the sliding base 12 and the sample support seat 1. The second locking member 15 passes through the sliding base 12, and its top is inserted into the threaded hole of the sample support seat, as Figure 1 and Figure 2 shown.

[0025] Further preferably, in this embodiment, we also disclose that the cross-section of the anti-slip protrusion is several concentric circular fan shapes. Combining Figure 3 it can be seen that in this embodiment, the number of the anti-slip protrusions is eight and they are evenly distributed in the fixed shaft.

[0026] Combining Figure 1 and Figure 2 it can be seen that in this embodiment, a moving adjustment device for the sliding adjustment device is further disclosed for the rotary potentiometer multi-parameter test fixture. The moving adjustment device includes a test platform 16 and a platform fixing seat 17 fixed on the test platform. A through hole matching the sliding rod 13 is formed on the sliding base 12, and the sliding rod extends and is fixed on the platform fixing seat 17. A moving adjustment spring 18 is further included. The moving adjustment spring 18 is sleeved on the sliding rod and both ends are fixed on the sliding base 12 and the platform fixing seat 17 respectively.

[0027] As a preference, in this embodiment, we also disclose the structure of a rotating handle 9, as Figure 1 and Figure 2As shown, the rotating handle 9 is arranged on the transmission shaft 10 and fixed to the transmission shaft 10.

[0028] Based on the above-disclosed structure, we will further clarify how the present invention effectively clamps a rotary potentiometer and further conducts multi-parameter tests.

[0029] First, we place the rotary potentiometer to be tested on the specimen support base 1. We can call this area the specimen installation area, where we complete the fixation and installation of the specimen to be tested. Specifically, in the first step, insert the shaft of the rotary potentiometer into the shaft fixing groove 8 of the second fastener and then tighten it so that the shaft of the rotary potentiometer is fixed within the second fastener; in the second step, adjust the positions of the sliding base 12 and the specimen support base 1 so that the first fastener is at a suitable adjustment position, and then rotate the second locking member 15 to fix the specimen support base 1 at a specific position; in the third step, rotate the first locking member 6 to make it abut against the end face of the specimen to be tested. Thus, we fix the specimen of the rotary potentiometer to be tested on the multi-parameter test fixture of the rotary potentiometer disclosed in the present invention.

[0030] Then, we connect the specimen terminal communication port and the motor communication port by means of a data communication line. This part is the same as the existing detection connection method and will not be elaborated here.

[0031] Finally, start the rotating motor 11. The rotating motor is driven by the transmission shaft 10 to drive the second fastener 3 to rotate. Since the shaft of the rotary potentiometer to be tested is fixed within the second fastener 3, the shaft of the rotary potentiometer will rotate with the rotating motor according to the set parameters. The test results are transmitted to the host computer through the data communication line, and the test results are recorded.

[0032] In some tests, it is necessary to manually control the rotation of the transmission shaft 10. At this time, the rotating motor 11 is not started, but the tester manually rotates the transmission shaft 10 by using the manual handle 9, thereby controlling the rotation of the second fastener 3, and then driving the rotation of the shaft of the rotary potentiometer to complete the test item.

Claims

1. Rotary potentiometer multi-parameter test fixture, characterized by: It includes a sample support seat, a first fastener, and a second fastener. The sample support seat is provided with a sample slot for placing and accommodating a rotary potentiometer. The first fastener and the second fastener are respectively arranged at two ends of the sample support seat; It also includes a first fastener fixing seat and a first locking member, wherein the first fastener fixing seat is provided with a first adjustment slot, the first fastener passes through the first adjustment slot, and the first locking member is provided above the first adjustment slot and passes through the first fastener fixing seat; A second adjusting slot is provided inside the second fastener, and a fixing shaft with an anti-slip protrusion on the inner wall is arranged in the second adjusting slot, forming a shaft fixing slot with a large inlet and a small outlet; It also includes a transmission shaft and a rotating motor. The transmission shaft connects the rotating motor and the second fastener, so that the second fastener rotates under the drive of the rotating motor.

2. The rotary potentiometer multi-parameter test fixture according to claim 1, characterized in that: It also includes a sliding adjustment device for the sample support seat, the sliding adjustment device includes a sliding base, a sliding rod, and a sliding adjustment spring, the sliding rod is fixed to the sliding base parallel to the first fastener, the sliding adjustment spring is respectively sleeved on the sliding rod, and the two ends are respectively fixed to the sample support seat and the sliding base, the bottom of the sample support seat is formed with a through hole matching the sliding rod, and the sample support seat can be slidably installed on the sliding rod through the through hole; it also includes a second locking member, the second locking member is a bolt with an operating head, the sliding base and the sample support seat are provided with screw holes matching the bolts, the second locking member passes through the sliding base, and the top of the second locking member is inserted into the screw hole of the sample support seat.

3. The rotary potentiometer multi-parameter test fixture according to claim 1, characterized in that: The cross section of the anti-slip protrusion is a plurality of concentric circle sectors.

4. The rotary potentiometer multi-parameter test fixture according to claim 3 is characterized in that: The number of the anti-slip protrusions is eight and they are evenly distributed in the fixed shaft.

5. The rotary potentiometer multi-parameter test fixture according to claim 2, characterized in that: It also includes a mobile adjustment device of the sliding adjustment device, the mobile adjustment device includes a test platform, a platform fixing seat fixed on the test platform, the sliding base is provided with a through hole matching the sliding rod, the sliding rod is extended and fixed on the platform fixing seat, and also includes a mobile adjustment spring, the mobile adjustment spring is sleeved on the sliding rod, and the two ends are respectively fixed on the sliding base and the platform fixing seat.

6. The rotary potentiometer multi-parameter test fixture according to claim 1, characterized in that: The utility model also comprises a rotating handle, and the rotating handle is arranged on the transmission shaft.

Images