Bidirectional test fixture

Abstract

The utility model discloses a bidirectional test fixture, which comprises a test board and a bottom board, a fixing component is arranged at the top end of the test board, the test board is positioned above the bottom board, a first hemispherical groove is arranged at the center of the bottom end of the test board, a first support ball is rotatably arranged in the first hemispherical groove, and a second support ball is arranged in the first support ball. The first supporting ball partially protrudes out of the bottom end of the testing table, the first supporting ball is fixed to the top end of a center supporting column, the bottom end of the center supporting column is arranged at the top end of the bottom plate, the rear portion and the right portion of the testing table are each provided with two angle supporting columns, and the bottom ends of the angle supporting columns are arranged at the top end of the bottom plate. An angle ruler is arranged at the top end of the angle supporting column, and the bottom end of the angle ruler is flush with the top end of the test board. According to the utility model, the test speed is improved, and the test accuracy can be ensured.

Description

Technical Field

[0001] This utility model relates to the field of backlight testing technology, specifically to a bidirectional testing fixture for backlight viewing angle testing. Background Technology

[0002] Viewing angle refers to the angle from which a user can clearly observe all the content on the display screen from different directions. Viewing angle is generally divided into horizontal viewing angle and vertical viewing angle. Horizontal viewing angle refers to the angle formed between the user's line of sight to the left or right of the vertical normal of the display screen (i.e., the vertical imaginary line in the center of the display screen) and the normal. Vertical viewing angle refers to the angle formed between the user's line of sight above or below the normal and the normal.

[0003] Before a display screen leaves the factory, the viewing angle of its backlight is usually tested. Currently, the backlight is typically rotated to the left, right, down, and up. The viewing angle is tested by measuring the brightness of the backlight at different angles in the horizontal and vertical directions.

[0004] Existing backlight viewing angle testing fixtures typically have test stands that can only rotate left, right, down, or up. During testing, after the backlight is fixed to the top of the test stand using a fixing component, the test stand can only rotate the backlight left, right, down, or up. Therefore, only one viewing angle of the backlight can be tested at a time. To test the viewing angle in another direction, the backlight must be removed, rotated 90 degrees, and then re-fixed to the top of the test stand using the fixing component before testing, or the backlight must be moved to another test fixture. Testing the viewing angle in another direction requires moving the backlight, resulting in slow testing speed and a higher risk of inaccurate results. Utility Model Content

[0005] To overcome the shortcomings of the existing technology, this utility model provides a bidirectional testing fixture, which improves the testing speed and ensures the accuracy of the test.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A bidirectional testing fixture includes a testing platform with a fixing component at its top and a base plate. The testing platform is located above the base plate. A first hemispherical groove is provided at the center of the bottom end of the testing platform. A first support ball is rotatably disposed in the first hemispherical groove, and the first support ball protrudes from the bottom end of the testing platform. The first support ball is fixed to the top end of a central support column, the bottom end of which is located at the top end of the base plate. Two angle support columns are provided at the rear and right sides of the testing platform, respectively. The bottom ends of the angle support columns are located at the top end of the base plate, and an angle ruler is provided at the top end of each angle support column. The bottom end of the angle ruler is flush with the top end of the testing platform.

[0008] As a preferred technical solution, the fixing component includes at least four pads disposed on the top of the test platform. Among the four pads, two pads are arranged symmetrically about the center of the top of the test platform, and the other two pads are arranged symmetrically about the center of the top of the test platform. A placement space is formed between the four pads and the top of the test platform.

[0009] As a preferred technical solution, the pad is slidably disposed at the top of the test platform; the bottom end of the pad is provided with a slider, wherein the sliders at the bottom ends of two pads are slidably engaged with the first sliding groove provided at the top of the test platform, and the sliders at the bottom ends of the other two pads are slidably engaged with the second sliding groove provided at the top of the test platform, wherein the first sliding groove and the second sliding groove are in a cross shape.

[0010] As a preferred technical solution, the bottom end of the test platform is provided with at least one second hemispherical groove in front of, behind, to the left and to the right of the first hemispherical groove. A second support ball is rotatably arranged in the second hemispherical groove. The second support ball protrudes from the bottom end of the test platform and is fixed to the top of the support telescopic column. The bottom end of the support telescopic column is located at the top of the base plate.

[0011] As a preferred technical solution, the supporting telescopic column includes at least three telescopic tubes, namely a first telescopic tube, a second telescopic tube, and a third telescopic tube. The bottom end of the first telescopic tube is located at the top end of the base plate. The second telescopic tube is sleeved inside the first telescopic tube and a portion of the second telescopic tube protrudes from the top end of the first telescopic tube. The third telescopic tube is sleeved inside the second telescopic tube and a portion of the third telescopic tube protrudes from the top end of the second telescopic tube. The second supporting ball is fixed at the top end of the third telescopic tube.

[0012] As a preferred technical solution, the outer peripheral surfaces of the first telescopic tube and the second telescopic tube are respectively provided with a first through groove and a second through groove extending along the height direction of the supporting telescopic column. The first through groove communicates with the interior of the first telescopic tube, and the second through groove communicates with the interior of the second telescopic tube and corresponds to the first through groove. A first C-shaped clamp is fitted on the outer peripheral surface of the first telescopic tube near the top end of the first telescopic tube. Two opposing first extensions are formed at both ends of the first C-shaped clamp. The first extension is provided with a first mounting hole, and a first fastener is installed in the first mounting hole of the two first extensions. A second C-shaped clamp is fitted on the outer peripheral surface of the second telescopic tube near the top end of the second telescopic tube. Two opposing second extensions are formed at both ends of the second C-shaped clamp. The second extension is provided with a second mounting hole, and a second fastener is installed in the second mounting hole of the two second extensions.

[0013] As a preferred technical solution, the angle support column is an angle telescopic column, which includes at least three telescopic components, namely a first telescopic component, a second telescopic component, and a third telescopic component. The first, second, and third telescopic components are all hollow. The bottom end of the first telescopic component is located at the top end of the base plate. The second telescopic component is fitted inside the first telescopic component, and a portion of the second telescopic component protrudes from the top end of the first telescopic component. The third telescopic component is fitted inside the second telescopic component, and a portion of the third telescopic component protrudes from the top end of the second telescopic component. The top end of the third telescopic component is provided with the angle ruler.

[0014] As a preferred technical solution, a first hole is provided on one side of the first telescopic member near the top of the first telescopic member. A third fastener is installed in the first hole. The head of the third fastener is located outside the first telescopic member, and the end of the third fastener extends into the first telescopic member and abuts against the second telescopic member. A second hole is provided on one side of the second telescopic member near the top of the second telescopic member. A fourth fastener is installed in the second hole. The head of the fourth fastener is located outside the second telescopic member, and the end of the fourth fastener extends into the second telescopic member and abuts against the third telescopic member.

[0015] As a preferred technical solution, the top of the base plate is provided with a mounting groove, the bottom of the central support column is provided with a first mounting block, and the first mounting block is disposed in the mounting groove; the bottom of the angle support column is provided with an angle mounting block, and the angle mounting block is disposed at the top of the base plate.

[0016] As a preferred technical solution, the bottom end of the supporting telescopic column is provided with a second mounting block, and the second mounting block is disposed at the top of the base plate.

[0017] The beneficial effects of this utility model are as follows: By setting a first hemispherical groove at the center of the bottom of the test platform, and rotatably mounting a first support ball within the groove, the first support ball protrudes from the bottom of the test platform and is fixed to the top of a central support column. The bottom of the central support column is located at the top of the base plate. Thus, after the backlight is fixed to the top of the test platform using a fixing assembly, the first support ball allows the test platform to rotate left, right, up, and down, thereby causing the backlight to rotate left, right, down, and up in the same directions. This allows for simultaneous testing of the horizontal and vertical viewing angles of the backlight. Compared to existing technologies, this eliminates the need to move the backlight, improving testing speed and ensuring accuracy. An angle gauge located at the rear of the test platform indicates the left and right rotation angles, while an angle gauge located on the right side indicates the up and down rotation angles, facilitating control of the test platform's rotation angle and consequently, the backlight's rotation angle. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the structure of a bidirectional testing fixture at a first angle according to an embodiment of the present invention;

[0020] Figure 2 yes Figure 1 A schematic diagram of the second angle of the bidirectional test fixture shown;

[0021] Figure 3 yes Figure 1 A schematic diagram of the third angle of the bidirectional test fixture shown;

[0022] Figure 4 yes Figure 1 A schematic diagram of the test platform and fixing components of the bidirectional test fixture at the first angle;

[0023] Figure 5 yes Figure 1 A schematic diagram of the test platform and fixing components of the bidirectional test fixture from a second angle;

[0024] Figure 6 yes Figure 1 The diagram shows the structure of the bidirectional test fixture after removing the test table and fixing components.

[0025] Figure 7 yes Figure 1 A schematic diagram of the structure of the second support column and the second support ball of the bidirectional test fixture shown;

[0026] Figure 8 yes Figure 1 The diagram shows the structure of the angle support column and angle ruler of the bidirectional test fixture. Detailed Implementation

[0027] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0028] Please refer to Figures 1 to 6 An embodiment of this utility model provides a bidirectional testing fixture, including a base plate 10 and a testing platform 20.

[0029] The test platform 20 is located above the base plate 10. A fixing component 30 is provided at the top of the test platform 20. The fixing component 30 includes four pads 31 disposed at the top of the test platform 20. Two of the four pads 31 are arranged symmetrically about the center of the top of the test platform 20, and the other two are arranged symmetrically about the center of the top of the test platform 20. The four pads 31 and the top of the test platform 20 form a placement space for the backlight. Understandably, the number of pads 31 can be set according to actual needs.

[0030] In this embodiment, the pad 31 is slidably disposed at the top of the test platform 20. Specifically, the bottom end of the pad 31 is provided with a slider 311, wherein the sliders 311 at the bottom of two pads 31 are slidably engaged with the first groove 312 provided at the top of the test platform 20, and the sliders 311 at the bottom of the other two pads 31 are slidably engaged with the second groove 313 provided at the top of the test platform 20. The first groove 312 and the second groove 313 are cross-shaped. The slider 311 is T-shaped, and the shapes of the first groove 312 and the second groove 313 are adapted to the shape of the slider 311. By slidably disposing of the pad 31 at the top of the test platform 20, the length and width dimensions of the placement space can be adjusted, thus accommodating backlights of different lengths and widths, and has a wide range of applications.

[0031] The test platform 20 has a first hemispherical groove 21 at its bottom center, and a first support ball 22 is rotatably disposed within the first hemispherical groove 21, with part of the first support ball 22 protruding from the bottom of the test platform 20. The first support ball 22 is fixed to the top of a central support column 40, the bottom of which is located at the top of the base plate 10. The central support column 40 supports the test platform 20, and the first support ball 22 allows the test platform 20 to rotate left, right, downward, and upward.

[0032] In this embodiment, the top of the base plate 10 is provided with an installation groove, and the bottom of the central support column 40 is provided with a first installation block 11. The first installation block 11 is disposed in the installation groove. The first installation block 11 and the installation groove facilitate the placement of the central support column 40 at the top of the base plate 10.

[0033] Two angle support columns 50 are provided at the rear and right sides of the test platform 20. The bottom end of the angle support column 50 is set at the top of the base plate 10, and an angle ruler 60 is provided at the top of the angle support column 50. The bottom end of the angle ruler 60 is flush with the top of the test platform 20. The angle ruler 60 located at the rear of the test platform 20 is used to indicate the angle of rotation of the test platform 20 to the left and right, and the angle ruler 60 located on the right side of the test platform 20 is used to indicate the angle of rotation of the test platform 20 upward and downward.

[0034] In this embodiment, the bottom end of the angle support column 50 is provided with an angle mounting block 14, which is located at the top of the base plate 10. The angle mounting block 14 facilitates the installation of the angle support column 50 at the top of the base plate 10.

[0035] With the above structure, in practical application, first apply double-sided tape to the side of the pad 31 near the center of the top of the test platform 20. Then, place the backlight in the placement space and adhere it to the double-sided tape on the four pads 31. This fixes the backlight to the top of the test platform 20. Then, for example, rotating the test platform 20 left, right, down, and up will cause the backlight to rotate left, right, down, and up in the same direction. After each rotation, the brightness value of the backlight is measured, thus enabling the testing of the backlight's viewing angle. An angle gauge 60 located behind the test platform 20 indicates the angle of rotation to the left and right, and an angle gauge 60 located to the right of the test platform 20 indicates the angle of rotation to the up and down. This facilitates control of the rotation angle of the test platform 20, and consequently, control of the rotation angle of the backlight.

[0036] This invention features a first hemispherical groove 21 at the center of the bottom of a test platform 20. A first support ball 22 is rotatably disposed within the first hemispherical groove 21, with a portion of the first support ball 22 protruding from the bottom of the test platform 20. The first support ball 22 is fixed to the top of a central support column 40, the bottom of which is located at the top of a base plate 10. Thus, after the backlight is fixed to the top of the test platform 20 by the fixing assembly 30, the test platform 20 can rotate left, right, up, and down via the first support ball 22. This, in turn, drives the backlight to rotate left, right, down, and up, allowing simultaneous testing of the horizontal and vertical viewing angles of the backlight. Compared to existing technologies, this eliminates the need to move the backlight, improving testing speed and ensuring testing accuracy.

[0037] Furthermore, combined Figure 7 As shown, the bottom of the test platform 20 is provided with a second hemispherical groove 23 in front of, behind, to the left of, and to the right of the first hemispherical groove 21. A second support ball 24 is rotatably disposed in the second hemispherical groove 23. The second support ball 24 protrudes from the bottom of the test platform 20 and is fixed to the top of the support telescopic column 70. The bottom of the support telescopic column 70 is located at the top of the base plate 10. It can be understood that the number and position of the second hemispherical grooves 23 can be set according to the actual situation.

[0038] In this embodiment, a second mounting block 12 is provided at the bottom end of the supporting telescopic column 70. The second mounting block 12 is provided at the top of the base plate 10, and the second mounting block 12 facilitates the installation of the supporting telescopic column 70 at the top of the base plate 10.

[0039] The supporting telescopic column 70 includes three telescopic tubes: a first telescopic tube 71, a second telescopic tube 72, and a third telescopic tube 73. The bottom end of the first telescopic tube 71 is provided with the second mounting block 12, and the bottom end of the first telescopic tube 71 is mounted on the top end of the base plate 10 via the second mounting block 12. The second telescopic tube 72 is fitted inside the first telescopic tube 71, with a portion of the second telescopic tube 72 protruding from the top end of the first telescopic tube 71. The third telescopic tube 73 is fitted inside the second telescopic tube 72, with a portion of the third telescopic tube 73 protruding from the top end of the second telescopic tube 72. A second supporting ball 24 is fixed to the top end of the third telescopic tube 73. Understandably, the number of telescopic tubes can be set according to actual conditions.

[0040] The outer periphery of the first telescopic tube 71 is provided with a first through groove 711 extending along the height direction of the supporting telescopic column 70. The first through groove 711 communicates with the interior of the first telescopic tube 71. The outer periphery of the second telescopic tube 72 is provided with a second through groove 721 extending along the height direction of the supporting telescopic column 70. The second through groove 721 communicates with the interior of the second telescopic tube 72 and corresponds to the first through groove 711. A first C-shaped clamp 74 is fitted around the outer periphery of the first telescopic tube 71 near its top end. Two opposing first extensions 741 are formed at both ends of the first C-shaped clamp 74. Each first extension 741 has a first mounting hole, and a first fastener 75 is installed in the first mounting hole of each first extension 741. A second C-shaped clamp 76 is fitted around the outer periphery of the second telescopic tube 72 near its top end. Two opposing second extensions 761 are formed at both ends of the second C-shaped clamp 76. Each second extension 761 has a second mounting hole, and a second fastener 77 is installed in the second mounting hole of each second extension 761. By providing a first through groove 711 on the outer circumferential surface of the first telescopic tube 71, the first C-shaped clamp 74 can compress the first telescopic tube 71. By compressing the first telescopic tube 71, the first telescopic tube 71 and the second telescopic tube 72 can be fixed together, preventing the second telescopic tube 72 from extending or retracting under external force. By providing a second through groove 721 on the outer circumferential surface of the second telescopic tube 72, the second C-shaped clamp 76 can compress the second telescopic tube 72. By compressing the second telescopic tube 72, the second telescopic tube 72 and the third telescopic tube 73 can be fixed together, preventing the third telescopic tube 73 from extending or retracting under external force.

[0041] Both the first fastener 75 and the second fastener 77 include a bolt 751 and a nut 752. The first mounting hole and the second mounting hole are both threaded holes. The bolt 751 of the first fastener 75 is threaded into the two first mounting holes. The nut 752 of the first fastener 75 and the bolt 741 of the first fastener 75 are threadedly engaged. The head of the bolt 751 and the nut 752 of the first fastener 75 abut against the side of the two first extensions 741 that are far away from each other. By abutting the head of the bolt 751 and the nut 752 of the first fastener 75 against the side of the two first extensions 741 that are far away from each other, the first telescopic tube 71 can be compressed by the first C-shaped clamp 74. The bolt 751 of the second fastener 77 is threaded into the two second mounting holes. The nut 752 of the second fastener 77 is threaded into the bolt 751 of the second fastener 77. The head of the bolt 751 of the second fastener 77 and the nut 752 of the second fastener 77 respectively abut against the side of the two second extensions 761 that is far away from each other. By abutting the head of the bolt 751 of the second fastener 77 and the nut 752 of the second fastener 77 against the side of the two second extensions 761 that is far away from each other, the second telescopic tube 72 can be compressed by the second C-shaped clamp 77.

[0042] The supporting telescopic column 70 ensures that the test platform 20 is stabilized at the current angle after each rotation, preventing it from shaking and improving testing accuracy. The second supporting ball 24 ensures that the test platform 20 can rotate left, right, downward, and upward. In practical application, before rotating the test platform 20, loosen the nuts 752 of the first fastener 75 and the second fastener 77. This prevents the first C-type clamp 74 from squeezing the first telescopic tube 71 and the second C-type clamp 76 from squeezing the second telescopic tube 72. At this time, the second telescopic tube 72 and the third telescopic tube 73 can extend and retract. Then, the test platform 20 can be rotated left, right, downward, and upward. During the rotation of the test platform 20, it will cause the second telescopic tube 72 and the third telescopic tube 73 of the supporting telescopic column 70 to extend and retract. After the test bench 20 is rotated to a certain angle, the nuts 752 of the first fastener 75 and the nuts 752 of the second fastener 77 are tightened. In this way, the first telescopic tube 71 and the second telescopic tube 72 can be fixed together by the first C-type clamp 74, and the second telescopic tube 72 and the third telescopic tube 73 can be fixed together by the second C-type clamp 76. In this way, the test bench 20 can be stabilized at the current angle.

[0043] Furthermore, combined Figure 8As shown, the angle support column 50 is an angle telescopic column, which includes three telescopic components: a first telescopic component 51, a second telescopic component 52, and a third telescopic component 53. The first telescopic component 51, the second telescopic component 52, and the third telescopic component 53 are all hollow. The bottom end of the first telescopic component 51 is provided with an angle mounting block 14, which is used to mount the bottom end of the first telescopic component 51 to the top of the base plate 10. The second telescopic component 52 is fitted inside the first telescopic component 51, with a portion of the second telescopic component 52 protruding from the top of the first telescopic component 51. The third telescopic component 53 is fitted inside the second telescopic component 52, with a portion of the third telescopic component 53 protruding from the top of the second telescopic component 52. The top of the third telescopic component 53 is provided with the angle ruler 60.

[0044] A first hole is provided on one side of the first telescopic member 51 near the top of the first telescopic member 51. A third fastener 54 is installed in the first hole. The head of the third fastener 54 is located outside the first telescopic member 51, and the end of the third fastener 54 extends into the first telescopic member 51 and abuts against the second telescopic member 52 to prevent the second telescopic member 52 from telescopically extending under external force. A second hole is provided on one side of the second telescopic member 52 near the top of the second telescopic member 52. A fourth fastener 55 is installed in the second hole. The head of the fourth fastener 55 is located outside the second telescopic member 52, and the end of the fourth fastener 55 extends into the second telescopic member 52 and abuts against the third telescopic member 53 to prevent the third telescopic member 53 from telescopically extending under external force. Both the third fastener 54 and the fourth fastener 55 include bolts. The first hole and the second hole are both threaded holes. The bolt of the third fastener 54 is installed in the internal thread of the first hole, and the bolt of the fourth fastener 55 is installed in the internal thread of the second hole. The end of the bolt of the third fastener 53 abuts against the second expansion member 52, and the end of the bolt of the fourth fastener 55 abuts against the third expansion member 53.

[0045] By setting the angle support column 50 as an angle telescopic column, the height of the angle ruler 60 can be adjusted, ensuring that the bottom of the angle ruler 60 is flush with the top of the test platform 20. This ensures the accuracy of the rotation angle of the test platform 20 and improves the testing precision. When adjusting the height of the angle ruler 60, first tighten the bolts of the third fastener 54 and the fourth fastener 55, separating the end of the bolt of the third fastener 54 from the second telescopic member 52 and the end of the bolt of the fourth fastener 55 from the third telescopic member 53. Then, extend and retract the second telescopic member 52 and the third telescopic member 53 until the bottom of the angle ruler 60 is flush with the top of the test platform 20. Finally, tighten the bolts of the third fastener 54 and the fourth fastener 55, ensuring that the end of the bolt of the third fastener 54 abuts against the second telescopic member 52 and the end of the bolt of the fourth fastener 55 abuts against the third telescopic member 53.

[0046] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A bidirectional testing fixture, comprising a testing platform, wherein a fixing component is provided at the top of the testing platform, characterized in that, It also includes a base plate, with the test platform located above the base plate. A first hemispherical groove is provided at the center of the bottom end of the test platform, and a first support ball is rotatably disposed in the first hemispherical groove. The first support ball protrudes from the bottom end of the test platform and is fixed to the top of a central support column. The bottom end of the central support column is located at the top end of the base plate. Two angle support columns are provided at the rear and right sides of the test platform, respectively. The bottom ends of the angle support columns are located at the top end of the base plate, and an angle ruler is provided at the top end of the angle support columns. The bottom end of the angle ruler is flush with the top end of the test platform.

2. The bidirectional testing fixture according to claim 1, characterized in that, The fixing component includes at least four pads disposed on the top of the test platform. Two of the pads are arranged symmetrically about the center of the top of the test platform, and the other two are arranged symmetrically about the center of the top of the test platform. A placement space is formed between the four pads and the top of the test platform.

3. The bidirectional testing fixture according to claim 2, characterized in that, The pad is slidably disposed at the top of the test bench; the bottom end of the pad is provided with a slider, wherein the sliders at the bottom ends of two pads are slidably engaged with the first sliding groove provided at the top of the test bench, and the sliders at the bottom ends of the other two pads are slidably engaged with the second sliding groove provided at the top of the test bench, wherein the first sliding groove and the second sliding groove are in a cross shape.

4. The bidirectional testing fixture according to claim 1, characterized in that, The bottom of the test platform is provided with at least one second hemispherical groove in front of, behind, to the left and to the right of the first hemispherical groove. A second support ball is rotatably arranged in the second hemispherical groove. The second support ball protrudes from the bottom of the test platform and is fixed to the top of the support telescopic column. The bottom of the support telescopic column is located at the top of the base plate.

5. The bidirectional testing fixture according to claim 4, characterized in that, The supporting telescopic column includes at least three telescopic tubes, namely a first telescopic tube, a second telescopic tube, and a third telescopic tube. The bottom end of the first telescopic tube is located at the top end of the base plate. The second telescopic tube is sleeved inside the first telescopic tube and a portion of the second telescopic tube protrudes from the top end of the first telescopic tube. The third telescopic tube is sleeved inside the second telescopic tube and a portion of the third telescopic tube protrudes from the top end of the second telescopic tube. The second supporting ball is fixed at the top end of the third telescopic tube.

6. The bidirectional testing fixture according to claim 5, characterized in that, The outer circumferential surfaces of the first telescopic tube and the second telescopic tube are respectively provided with a first through groove and a second through groove extending along the height direction of the supporting telescopic column. The first through groove communicates with the interior of the first telescopic tube, and the second through groove communicates with the interior of the second telescopic tube and corresponds to the first through groove. A first C-shaped clamp is fitted on the outer circumference of the first telescopic tube near the top end of the first telescopic tube. Two opposing first extensions are formed at both ends of the first C-shaped clamp. The first extension is provided with a first mounting hole, and a first fastener is installed in the first mounting hole of the two first extensions. A second C-shaped clamp is fitted on the outer circumference of the second telescopic tube near the top end of the second telescopic tube. Two opposing second extensions are formed at both ends of the second C-shaped clamp. The second extension is provided with a second mounting hole, and a second fastener is installed in the second mounting hole of the two second extensions.

7. The bidirectional testing fixture according to claim 1, characterized in that, The angle support column is an angle telescopic column, which includes at least three telescopic components, namely a first telescopic component, a second telescopic component, and a third telescopic component. The first, second, and third telescopic components are all hollow. The bottom end of the first telescopic component is located at the top end of the base plate. The second telescopic component is fitted inside the first telescopic component, and a portion of the second telescopic component protrudes from the top end of the first telescopic component. The third telescopic component is fitted inside the second telescopic component, and a portion of the third telescopic component protrudes from the top end of the second telescopic component. The top end of the third telescopic component is provided with the angle ruler.

8. The bidirectional testing fixture according to claim 7, characterized in that, A first hole is provided on one side of the first telescopic member near the top of the first telescopic member. A third fastener is installed in the first hole. The head of the third fastener is located outside the first telescopic member, and the end of the third fastener extends into the first telescopic member and abuts against the second telescopic member. A second hole is provided on one side of the second telescopic member near the top of the second telescopic member. A fourth fastener is installed in the second hole. The head of the fourth fastener is located outside the second telescopic member, and the end of the fourth fastener extends into the second telescopic member and abuts against the third telescopic member.

9. The bidirectional testing fixture according to claim 1, characterized in that, The top of the base plate is provided with a mounting groove, and the bottom of the central support column is provided with a first mounting block, which is disposed in the mounting groove; the bottom of the angle support column is provided with an angle mounting block, which is disposed at the top of the base plate.

10. The bidirectional testing fixture according to claim 4, characterized in that, The bottom end of the support telescopic column is provided with a second mounting block, which is located at the top of the base plate.

Images