Resistance testing device

Abstract

The utility model relates to a resistance testing device, which comprises a base assembly, a lifting assembly, a shielding assembly and a testing assembly, the lifting assembly is arranged on the base assembly, the testing assembly is arranged above the lifting assembly, and the testing assembly is arranged above the lifting assembly along with ascending or descending of the lifting assembly. And the test assembly loosens or clamps the resistor element placed in the test assembly, so that the test of the resistor is realized. The resistance testing device has the advantages that manual operation can be reduced, the detection efficiency is improved, and streamlined operation is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of resistance testing, in particular to a resistance testing device. Background Art

[0002] As a basic electronic component, resistors are widely used in various equipment and electrical equipment in industry and life to limit voltage, current, and voltage division. With the development of science and technology and the continuous changes in social needs, resistors are increasingly developing in the direction of high precision and light weight, especially in mobile devices, where more functions need to be incorporated into their designs. Generally, when resistors are produced, it is necessary to measure the resistance, so it is of great significance to develop a resistance detection device.

[0003] A Chinese patent with publication number CN117074785A discloses a high-precision resistor value detection device, including a resistor placement table, a conductive clamp and a conductive mechanism. The surface of the resistor placement table is provided with a placement groove for placing the resistor, the conductive clamps are symmetrically arranged in the placement groove, and the conductive mechanism is arranged on the side of one of the conductive clamps, and the conductive mechanism is energized by an external power supply. When the resistor is detected, the two conductive clamps are electrically connected through the conductive mechanism. In the present invention, the resistor is fixed by abutting the equipment, and the path of the current passing through the resistor is increased by multi-point connection. It can effectively reduce and avoid the detection efficiency and accuracy of the resistor value due to the looseness of the abutment end as in the prior art, and when the conductive mechanism is clamped on the conductive clamp to form an electrical connection, the conductive clamp can be fixed. This connection method can also increase the stability of the fixed resistor and avoid the resistor from becoming loose after being fixed.

[0004] However, when implementing the resistance testing device, the inventor discovered that the existing resistance value detection equipment has the following technical defects:

[0005] Although the resistance can be measured, the operator needs to manually lift the conductive clamps on both sides of the placement slot and place the resistor to be tested between the conductive clamps and the bottom of the placement slot to form abutment and fixation. After the test is completed, the resistor needs to be manually removed, and the operation steps are cumbersome. When multiple resistors need to be tested, the test efficiency of the resistors becomes very low, and automated assembly line operation cannot be achieved. Utility Model Content

[0006] Based on this, the purpose of the utility model is to provide a resistance testing device.

[0007] A resistance testing device comprises a base assembly, a lifting assembly and a testing assembly, wherein the lifting assembly is arranged on the base assembly, and the testing assembly is arranged above the lifting assembly. As the lifting assembly rises or falls, the testing assembly releases or clamps a resistance element.

[0008] Compared with the prior art, the resistance testing device of the utility model sets the test component above the lifting component, and as the lifting component rises or falls, the test component loosens or clamps the resistance element, and the test component is electrically connected to the detector, thereby completing the test of the resistance. The resistance testing device of the utility model has high detection efficiency and simple operation, and can realize streamlined operation of the device, reducing manual operation.

[0009] Furthermore, the lifting assembly includes a lifting motor, a motor mounting seat, a cam and a lifting rod, wherein the motor mounting seat is mounted above the base assembly; the lifting motor is fixed to the motor mounting seat; the cam is mounted on the output shaft of the lifting motor and rotates therewith, and the lifting rod extends from the cam toward the test assembly, one end of which contacts the side of the cam and the other end abuts against the test assembly, and moves away from or toward the test assembly as the cam rotates. The lifting motor drives the cam to rotate, so that the lifting rod rises or falls.

[0010] Furthermore, the cam is an eccentric wheel, and the cam rotates eccentrically following the rotation of the lifting motor.

[0011] Furthermore, a cone is provided at one end of the lifting rod away from the cam, and in the extension direction of the lifting rod, the cross-sectional area of ​​the cone near the test assembly is smaller than the cross-sectional area of ​​the cone near the cam, thereby improving the smoothness of the lifting rod driving the first sliding block and the second sliding block to move away from each other.

[0012] Further, the test assembly includes a first test needle, a second test needle, a first sliding block, a second sliding block and a roller; the first sliding block and the second sliding block can slide closer or separate in a direction perpendicular to the lifting direction of the lifting assembly; the first test needle is fixedly connected to the first sliding block, the second test needle is fixedly connected to the second sliding block, the two rollers are arranged opposite to each other and are axially connected to the first sliding block and the second sliding block respectively, their axes are parallel to each other and perpendicular to the lifting direction of the lifting assembly and the sliding direction of the first sliding block, and the wheel surface of the roller abuts against the cone.

[0013] Furthermore, the first sliding block and the second sliding block are elastically connected by a first tension spring and a second tension spring, the first tension spring and the second tension spring are respectively located on both sides of the first sliding block and the second sliding block, and their axes are parallel to the sliding direction of the first sliding block. Since the tension spring is retractable, it can meet the test of resistors of different sizes.

[0014] Furthermore, the test assembly further includes a first stopper and a second stopper, the first sliding block and the second sliding block are provided with a notch extending along the Z direction, and the first stopper and the second stopper respectively penetrate into the notch of the first sliding block and the second sliding block, so that the first sliding block and the second sliding block can slide within a certain distance range.

[0015] Furthermore, a shielding component is included; the test component is located inside the shielding component and is wrapped by the shielding component. The test component is arranged inside the shielding component, which can minimize the impact of the external environment and improve the accuracy and quality of the detection.

[0016] Furthermore, the shielding assembly includes an insulating cover, an insulating outer frame and an insulating partition stacked in sequence, the insulating partition being fixedly connected to the motor mounting seat; the insulating outer frame is a hollow surrounding structure with openings at the top and bottom, and is fixed to the insulating partition, and the insulating cover is covered on the side of the insulating outer frame facing away from the insulating partition. A shielding space can be formed, so that the test assembly is arranged in the shielding space.

[0017] Furthermore, a groove is provided on the side of the insulating cover facing away from the insulating outer frame, and the groove is connected to the inside of the shielding assembly. The resistor to be tested can directly enter the inside of the shielding assembly through the groove without reopening the insulating cover, thereby achieving the purpose of rapid detection.

[0018] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the resistance testing device in the utility model;

[0020] Figure 2 It is a front view of the resistance testing device of the utility model;

[0021] Figure 3 for Figure 2 A partial enlarged view of the A part;

[0022] Figure 4 It is a partial exploded view of the shielding component in the resistance testing device of the utility model;

[0023] Figure 5 It is a top view of the test assembly in the resistance test device of the utility model;

[0024] Figure 6 It is a cross-sectional view of the resistance testing device of the utility model;

[0025] Figure 7 for Figure 6 A partial enlarged view of area B. DETAILED DESCRIPTION

[0026] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0027] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0028] In this embodiment, the resistance testing device is placed on a workbench surface, with the direction perpendicular to the workbench surface being the Z direction, and the two directions parallel to the workbench surface and perpendicular to each other being the X direction and the Y direction.

[0029] See also Figures 1 to 7 The resistance testing device includes a base assembly 10, a lifting assembly 20, a shielding assembly 30 and a testing assembly 40. The base assembly 10 is placed on the workbench surface for support. The lifting assembly 20 is arranged on the base assembly 10 and moves to different positions on the workbench with the base assembly 10. The testing assembly 40 is arranged above the lifting assembly 20. As the lifting assembly 30 rises or falls, the testing assembly 40 loosens or clamps the resistor placed inside it, thereby realizing the test of the resistor; further, the testing assembly 40 is wrapped by the shielding assembly 30, thereby reducing the influence of the external environment and improving the accuracy of the detection.

[0030] Specifically, Figure 1As shown, the base assembly 10 is placed on a workbench to support the entire device. The base assembly 10 includes a Z-axis fine-tuning device 11 and an XY-axis fine-tuning device 12, which can be fine-tuned in the XYZ direction according to different actual material conditions, and is used to adjust the slight deviations generated when the entire device is assembled, so that the device can be modularly replaced. It should be noted that the Z-axis fine-tuning device and the XY-axis fine-tuning device in this embodiment are conventional designs and are not described in detail here.

[0031] Further references Figure 2 and Figure 3 , the lifting assembly 20 is fixedly connected above the base assembly 10, and the lifting assembly 20 includes a lifting motor 21, a motor mounting seat 22, a cam 25, a lifting rod 27 and a contact block 24. The motor mounting seat 22 is fixed to one side above the base assembly 10. The lifting motor 21 is mounted on the motor mounting seat 22, and the axis of its output shaft is parallel to the workbench surface and extends toward the test assembly 40. The cam 25 is mounted on the output shaft of the lifting motor 21 and rotates therewith. In this embodiment, the cam 25 is an eccentric wheel, and the output shaft of the lifting motor 21 passes through the center of the cam 25, so that the cam 25 rotates eccentrically following the rotation of the lifting motor 21. The contact block 24 is horizontally placed above the cam 25 and abuts against the side of the cam 25. When the cam 25 rotates, the contact block 24 moves up and down along the Z-axis direction. One end of the lifting rod 27 in the axial direction is connected to the contact block 24 and extends along the Z-direction. The other end away from the contact block 24 is provided with a cone 271, and the cross-sectional area of ​​the side away from the contact block 24 is smaller than the cross-sectional area of ​​the side close to the contact block 24. The end of the cone 271 of the lifting rod 27 passes through the shielding assembly 30 and abuts against the test assembly 40. Further, the lifting assembly 20 also includes a spring 23 and a sliding sleeve 26. The upper and lower ends of the sliding sleeve 26 abut against the shielding assembly 30 and the lifting rod 27 respectively. In this embodiment, the sliding sleeve 26 is movably sleeved outside the lifting rod 27. The spring 23 is sleeved outside the lifting rod 27 and its two ends abut against the contact block 24 and the sliding sleeve 26 respectively. When the lifting motor 21 rotates, as the cam 25 rotates eccentrically, the cam 25 drives the lifting rod 27 to rise. At this time, the spring 24 is in a compressed state. When the cam 25 rotates eccentrically downward, the lifting rod 27 drops under the action of gravity. At this time, the elastic force of the spring 23 is slowly released, which can prevent the lifting rod 27 from dropping rapidly and hitting the cam 25, thereby realizing reciprocating lifting.

[0032] Continue to refer Figure 4The shielding assembly 30 is installed above the motor mounting seat 22. The shielding assembly 30 includes an insulating cover 31, an insulating outer frame 32 and an insulating partition 33 stacked in sequence. The insulating partition 33 is fixed on the motor mounting seat 22. The insulating outer frame 32 is a hollow rectangular parallelepiped enclosing structure with openings at the top and bottom. The insulating partition 33 is a rectangular structure and has a circular hole in the middle that matches the lifting rod 27 so that the lifting rod 27 can pass through the insulating partition 33. The four corners of the insulating outer frame 32 are fixed to the insulating partition 33 by bolts, etc., and the insulating cover 31 covers the side of the insulating outer frame 32 away from the insulating partition 33, thereby forming a shielding space (not marked), and the test component 40 is arranged in the shielding space; the side of the insulating cover 31 facing away from the insulating outer frame 32 is provided with a "cross-shaped" groove 311, and the groove 311 is connected to the inside of the shielding component 30. The resistance to be tested can directly enter the inside of the shielding component 30 through the groove 311 without reopening the insulating cover 31, thereby achieving the purpose of rapid detection. Furthermore, the insulating cover 31, the insulating outer frame 32 and the insulating partition 33 are all insulating parts made of insulating materials, which can minimize the influence of the external environment on the test results.

[0033] Continue to refer Figures 5 to 7The test assembly 40 is located in the shielding assembly 30. The test assembly 40 is installed on the side of the insulating partition 33 facing the insulating cover 31. The test assembly 40 includes a first test needle 41, a second test needle 42, a first sliding block 43, a second sliding block 44, a first slide groove 45, a second slide groove 46, a first tension spring 47, a second tension spring 48 and two rollers 51. The first sliding block 43 and the second sliding block 44 are arranged opposite to each other and can approach or separate from each other in a direction perpendicular to the Z-axis direction, and the sliding directions of the first sliding block 43 and the second sliding block 44 are parallel to each other. The resistance to be tested is located between the first sliding block 43 and the second sliding block 44. The two rollers 51 are arranged opposite to each other and are axially connected to the first sliding block 43 and the second sliding block 44 respectively. The axes thereof are parallel to each other and perpendicular to the Z-direction and the sliding directions of the first sliding block 43 and the second sliding block 44, so that the wheel surface of the roller 51 abuts against the cone 271. When the cam 25 drives the lifting rod 27 to rise, since the cone 271 abuts against the bottom of the two rollers 51, the lifting rod 27 can push the two rollers 51 away from each other, the first test needle 41 is fixedly connected to the first sliding block 43, and the second test needle 42 is fixedly connected to the second sliding block 44, and as the first sliding block 43 and the second sliding block 44 move, they approach or separate from each other to contact or separate with the resistor to be tested. During testing, one end of the first test needle 41 and the second test needle 42 respectively contact the pole piece of the resistor to be tested, and the other end is electrically connected to the testing instrument to form an electrical circuit. The first slide groove 45 and the second slide groove 46 are relatively arranged on the insulating partition 33, and their extension direction is parallel to the sliding direction of the first slide groove 45 and the second slide groove 46. The first sliding block 43 and the second sliding block 44 slide along the first slide groove 45 and the second slide groove 46 respectively. The first tension spring 47 and the second tension spring 48 are connected between the first sliding block 43 and the second sliding block 44, respectively, and their axes are parallel to the sliding directions of the first sliding block 43 and the second sliding block 44. In this embodiment, along the Z direction, in the direction perpendicular to the sliding directions of the first sliding slot 45 and the second sliding slot 46, the first tension spring 47 and the second tension spring 48 are respectively located on both sides of the first sliding block 43 and the second sliding block 44, so that the tension directed to the opposite sides of the first sliding block 43 and the second sliding block 44 is uniformly generated on the opposite sides of the first sliding block 43 and the second sliding block 44. Since the tension spring is retractable, resistors of different sizes can be placed by controlling the length of the retraction of the tension spring, and the first sliding block 43 and the second sliding block 44 are kept clamped with the resistor to be detected.Furthermore, the test assembly 40 also includes a first stop block 49 and a second stop block 50, and the first stop block 49 and the second stop block 50 are respectively protruding from the side of the insulating partition 33 facing the insulating cover 31, and the outer sides of the first sliding block 43 and the second sliding block 44 are provided with a notch (not marked) extending along the Z direction, and the first stop block 49 and the second stop block 50 are respectively inserted into the notches of the first sliding block 44 and the second sliding block 43. During the sliding of the first sliding block 43 and the second sliding block 44, the two opposite walls of the notches of the first sliding block 43 and the second sliding block 44 are respectively abutted against the first stop block 49 and the second stop block 50. Through this design, the first sliding block 43 and the second sliding block 44 can slide within a certain distance range.

[0034] In this embodiment, the specific operation process is as follows: when the resistance testing device is in use, the lifting motor 21 fixed on the motor mounting seat 22 rotates and drives the cam 25 to rotate eccentrically, thereby pushing the contact block 24 to move up and down along the Z direction, and the lifting rod 27 moves up and down accordingly; when the lifting rod 27 rises, the cone 271 of the lifting rod 27 presses against the bottom of the first sliding block 43 and the second sliding block 44, so that the first sliding block 43 and the second sliding block 44 are separated from each other, and the resistor to be tested is placed on the first sliding block 4 through a suction nozzle or a manipulator. 3 and the second sliding block 44; the cam 25 continues to rotate eccentrically, and when the lifting rod 27 descends, the cone 271 of the lifting rod 27 moves away from the bottom of the first sliding block 43 and the second sliding block 44, and the first sliding block 43 and the second sliding block 44 approach each other under the action of the first tension spring 47 and the second tension spring 48, and clamp the two end surfaces of the resistor element. At this time, the first test needle 41 and the second test needle 42 are in contact with the resistor electrode respectively. Since the first test needle 41 and the second test needle 42 are also electrically connected to the detector respectively, the resistance test data can be recorded.

[0035] Compared with the prior art, the resistance testing device of the utility model sets the test component 40 above the lifting component 20. As the lifting component 20 rises or falls, the test component 40 loosens or clamps the resistance element, and the test component 20 is electrically connected to the detector, thereby completing the test of the resistance. The resistance testing device of the utility model has high detection efficiency and simple operation, and can realize streamlined operation of the device, reducing manual operation.

[0036] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and the utility model is also intended to include these modifications and modifications.

Claims

1. A resistance testing device, characterized in that: The invention comprises a base assembly, a lifting assembly and a test assembly, wherein the lifting assembly is arranged on the base assembly, and the test assembly is arranged above the lifting assembly. As the lifting assembly rises or falls, the test assembly releases or clamps the resistance element.

2. The resistance testing device according to claim 1, characterized in that: The lifting assembly includes a lifting motor, a motor mounting seat, a cam and a lifting rod, wherein the motor mounting seat is installed above the base assembly; the lifting motor is fixed to the motor mounting seat; the cam is installed on the output shaft of the lifting motor and rotates therewith, and the lifting rod extends from the cam toward the test assembly, one end of which contacts the side surface of the cam and the other end abuts the test assembly, and moves away from or toward the test assembly as the cam rotates.

3. The resistance testing device according to claim 2, characterized in that: The cam is an eccentric wheel, and the cam rotates eccentrically following the rotation of the lifting motor.

4. The resistance testing device according to claim 2, characterized in that: A cone is provided at one end of the lifting rod away from the cam, and in the extending direction of the lifting rod, the cross-sectional area of ​​the cone close to the test assembly is smaller than the cross-sectional area of ​​the cone close to the cam.

5. The resistance testing device according to claim 4, characterized in that: The test assembly includes a first test needle, a second test needle, a first sliding block, a second sliding block and two rollers; the first sliding block and the second sliding block can slide closer or separate in a direction perpendicular to the lifting direction of the lifting assembly; the first test needle is fixedly connected to the first sliding block, and the second test needle is fixedly connected to the second sliding block. The two rollers are arranged opposite to each other and are axially connected to the first sliding block and the second sliding block respectively, and their axes are parallel to each other and perpendicular to the lifting direction of the lifting assembly and the sliding direction of the first sliding block, and the wheel surface of the roller abuts against the cone.

6. The resistance testing device according to claim 5, characterized in that: The first sliding block is elastically connected to the second sliding block via a first tension spring and a second tension spring. The first tension spring and the second tension spring are respectively located on both sides of the first sliding block and the second sliding block, and their axes are parallel to the sliding direction of the first sliding block.

7. The resistance testing device according to claim 6, characterized in that: The test assembly also includes a first stopper and a second stopper. The first sliding block and the second sliding block are provided with a notch extending along the Z direction. The first stopper and the second stopper respectively penetrate into the notch of the first sliding block and the second sliding block. The Z direction is consistent with the extension direction of the lifting rod.

8. The resistance testing device according to claim 2, characterized in that: It also includes a shielding component; the test component is located in the shielding component and is wrapped by the shielding component.

9. The resistance testing device according to claim 8, characterized in that: The shielding assembly includes an insulating cover, an insulating outer frame and an insulating partition stacked in sequence, wherein the insulating partition is fixedly connected to the motor mounting base; the insulating outer frame is a hollow enclosing structure with openings at the top and bottom, and is fixed to the insulating partition, and the insulating cover is covered on the side of the insulating outer frame facing away from the insulating partition.

10. The resistance testing device according to claim 9, characterized in that: A groove is provided on a side of the insulation cover facing away from the insulation outer frame, and the groove is communicated with the inside of the shielding assembly.

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