Flat cable folding test device

Abstract

The invention aims to provide the flat cable folding test device which has folding test and performance test functions and is stable and reliable in structure and high in detection efficiency. The device comprises a bottom plate, the bottom plate is provided with a test board card, a four-axis bending mechanism and two sets of driving switching mechanisms arranged on the two sides of the test board card, the four-axis bending mechanism is matched with a to-be-tested flat cable in a clamping mode, and each driving switching mechanism comprises a movable switching plate. The movable adapter plates of the two sets of driving adapter structures are connected with the two movable ends of the four-axis bending mechanism respectively and drive the two movable ends of the four-axis bending mechanism to conduct folding motion, and at least one movable adapter plate is provided with a connector in electric signal connection with a flat cable to be tested. And the connector is in electric signal connection with the test board card. The invention is applied to the technical field of flat cable testing.

Description

Technical Field

[0001] This invention relates to the technical field of ribbon cable testing, and particularly to a ribbon cable folding testing device. Background Technology

[0002] With the rapid development of the foldable phone market, the reliability of foldable screen cables, as key components connecting various functional modules of the phone, is of paramount importance. These cables must maintain good electrical performance during frequent folding of the phone, making accurate and efficient testing crucial for ensuring product quality. While testing technologies for foldable screen cables have continuously evolved in the field of electronic component testing, there are still many shortcomings in testing foldable screen cables for this specific application scenario. Currently, traditional foldable screen cable testing still focuses on static testing before and after cable aging, which is insufficient to meet the unique testing requirements. Furthermore, current testing methods involve folding and testing, requiring the cable under test to be transferred multiple times between different testing machines, making the testing process cumbersome and inefficient. Existing testing methods typically use fixed angles and positions for cable folding, which differs significantly from the bending and stress states of the cables during actual use in foldable phones. This can easily lead to cosmetic damage during testing and makes it impossible to accurately measure the impedance value under actual use, thus failing to guarantee the stability of the foldable screen phone cables in real-world applications. In addition, in traditional testing solutions, the entire testing equipment is usually designed according to the product being tested. When the product is upgraded and iterated, the existing testing equipment needs to be replaced, which is not conducive to the rapid upgrading of the product.

[0003] Therefore, there is an urgent need for more efficient, accurate, and practical testing solutions to ensure the overall performance and quality of foldable screen phone cables. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a ribbon cable folding test device that combines folding test and performance test, and has a stable and reliable structure and high detection efficiency.

[0005] The technical solution adopted in this invention is as follows: This invention includes a base plate, on which a test board, a four-axis bending mechanism, and two sets of drive adapter mechanisms are disposed on both sides of the test board. The four-axis bending mechanism is clamped and cooperated with the cable under test. The drive adapter mechanism includes a movable adapter plate. The two sets of movable adapter plates of the drive adapter structure are respectively connected to the two movable ends of the four-axis bending mechanism, and drive the two movable ends of the four-axis bending mechanism to perform a folding action. At least one of the movable adapter plates is provided with a connector that is electrically connected to the cable under test. The connector is electrically connected to the test board.

[0006] As can be seen from the above scheme, the test board is used to electrically connect to the cable under test and communicate with the cable under test to perform electrical performance testing. The four-axis bending mechanism cooperates with the drive adapter mechanism. The drive adapter mechanism drives the four-axis bending mechanism to fold the cable under test, and at the same time, it communicates with the test board through the connector set on the drive adapter mechanism, thereby ensuring a stable and reliable connection between the cable under test and the test board, realizing dynamic testing, and simulating the cable under test under real working conditions. The four-axis bending mechanism and the movable connecting plate are detachably connected. After product upgrades, only the four-axis bending mechanism needs to be adapted and adjusted, without replacing the entire machine, reducing costs. Dynamic folding is achieved through the four-axis bending mechanism. The driven structure realizes the stretching action of the cable under test during folding and the contraction action during reset, so that the folding effect of the cable under test is consistent with its working state, thereby ensuring the accuracy and reliability of the test data.

[0007] In a preferred embodiment, the four-axis bending mechanism includes a mounting plate and a pair of rotating frames. Each rotating frame includes a support shaft, an active tilting frame, and a driven tilting frame. The support shaft is mounted on the mounting plate, the active tilting frame is movably mounted on the support shaft, and the driven tilting frame is limited to the support shaft via a hinge block. The active tilting frame is provided with a limiting sliding groove that limits the driven tilting frame. The active tilting frame is connected to the movable adapter plate, and the driven tilting frame is clamped to the cable under test. When the movable adapter plate drives the active tilting frame to rotate along the support shaft, the driven tilting frame follows the active tilting frame to rotate and slides along the limiting sliding groove.

[0008] A further preferred embodiment is that the driven flip frame is provided with a first adapter cable that is electrically connected to the connector, and the cable under test is communicatively connected to the connector through the first adapter cable.

[0009] A further preferred embodiment is that the movable adapter plate is provided with a plurality of equal-height screws that cooperate with the limiting of the active tilting frame, and a floating spring is sleeved on the equal-height screw, the floating spring being located between the active tilting frame and the nut of the equal-height screw.

[0010] A further preferred embodiment is that the driven flipping frame includes a movable plate and a pressure block. The pressure block is connected to the movable plate and cooperates to limit the position of the cable to be tested. Both ends of the movable plate are connected to the hinge block. When the active flipping frame drives the driven flipping frame to move, the driven flipping frame slides away from the support shaft along the limiting sliding groove under the limitation of the hinge block.

[0011] A further preferred embodiment is that one end of the hinge block is rotatably connected to the movable plate, the other end of the hinge block is rotatably connected to the support shaft, and the movable plate is provided with a clearance groove adapted to the hinge block.

[0012] A further preferred embodiment is that the mounting plate is also provided with a positioning pin that cooperates with the driven flipping frame for limiting.

[0013] In a preferred embodiment, the drive adapter mechanism further includes a servo motor and a rotary bearing assembly mounted on the base plate, with one end of the movable adapter plate connected to the rotor of the servo motor and the other end of the movable adapter plate connected to the rotary bearing assembly.

[0014] In a preferred embodiment, the test board includes a communication board and a processing card, wherein the communication board is connected to the connector via a second adapter cable, and the processing card is electrically connected to the second adapter cable.

[0015] A further preferred embodiment is that the drive adapter mechanism further includes a cable support base, on which a plurality of guide rollers are rotatably disposed, and the second adapter cable is wound around the guide rollers. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a three-dimensional structural schematic diagram of the four-axis bending mechanism; Figure 3 This is an exploded structural diagram of the four-axis bending mechanism; Figure 4 This is a first three-dimensional structural schematic diagram of the test board and the drive adapter mechanism; Figure 5 This is a second three-dimensional structural diagram of the test board and the drive adapter mechanism. Detailed Implementation

[0017] like Figures 1 to 5As shown, in this embodiment, the present invention includes a base plate 1, on which a test board 2, a four-axis bending mechanism 3, and two sets of drive adapter mechanisms 4 are disposed on both sides of the test board 2. The four-axis bending mechanism 3 is clamped and engaged with the cable under test 5. The drive adapter mechanism 4 includes a movable adapter plate 401. The movable adapter plates 401 of the two sets of drive adapter mechanisms 4 are respectively connected to the two movable ends of the four-axis bending mechanism 3, and drive the two movable ends of the four-axis bending mechanism 3 to perform a folding action. Each set of movable adapter plates 401 is provided with a connector that is electrically connected to the cable under test 5. The connector is electrically connected to the test board 2. By using a connector adapter testing method, the cable under test 5 and the test board 2 form a test connection path, replacing the traditional complex manual testing or static machine testing. The operation is simple and quick, requiring no professional operators to operate for a long time, greatly shortening the single test time and improving production efficiency. Meanwhile, the four-axis bending mechanism 3 can simulate the real working conditions of the ribbon cable under the stretching and contraction state in the folding screen device. It integrates dynamic aging and performance testing functions on the same device, which significantly simplifies the testing process, effectively shortens the production time, improves production efficiency, and reduces the production cost of enterprises.

[0018] like Figure 2 and Figure 3As shown, in this embodiment, the four-axis bending mechanism 3 includes a mounting plate 301 and a pair of rotating frames. The pair of rotating frames are respectively disposed on both sides of the mounting plate 301, and the folding action of the pair of rotating frames realizes the folding of the cable 5 to be tested. The rotating frame includes a support shaft 302, an active flipping frame 303, and a driven flipping frame 304. The support shaft 302 is disposed on the mounting plate 301, the active flipping frame 303 is movably disposed on the support shaft 302, and the driven flipping frame 304 is limited to the support shaft 302 through a hinge block 305. The active flipping frame 303 is provided with a limiting sliding groove 306 that limits the movement of the driven flipping frame 304. The active flipping frame 303 is connected to the movable adapter plate 401, and the driven flipping frame 304 is clamped and connected to the cable 5 to be tested. When the movable adapter plate 401 drives the active flip frame 303 to rotate along the support shaft 302, the driven flip frame 304 follows the active flip frame 303 to flip and slide along the limiting sliding groove 306. The active flip frame 303 is movably connected to the support shaft 302 through a pair of first bearings, which make the rotation of the active flip frame 303 smoother. The active flip frame 303 of the pair of rotating frames serves as the folding body to realize the folding action of simulating a folding screen mobile phone. The test cable 5 is clamped on the driven flip frame 304, and then follows the active flip frame 303 to fold the test cable 5 during the folding action. During folding, under the limiting action of the hinge block 305 and the limiting sliding groove 306, the test cable 5 is driven to extend along the direction of the active flip frame 303, and during unfolding, the test cable 5 is driven to retract. The overall structure of the rotating frame simulates the actual bending and stress state of the ribbon cable in a foldable screen phone, making the test environment highly consistent with the actual use scenario. This avoids damage to the ribbon cable caused by test conditions not matching reality, obtains accurate impedance values ​​and other performance parameters, and ensures the stability of the ribbon cable in actual use.

[0019] like Figure 1 As shown, in this embodiment, the driven flip frame 304 is provided with a first adapter cable 307 that is electrically connected to the connector. The cable under test 5 is communicatively connected to the connector through the first adapter cable 307. Communication is achieved through the first adapter cable 307, making the communication structure of the driven flip frame 304 separable from the movable adapter plate 401, thus realizing modular connection. For product upgrades and iterations, equipment upgrades can be achieved by replacing the corresponding four-axis bending mechanism 3 with a contour clamping device, reducing equipment upgrade costs, shortening the design time required for equipment upgrades, and facilitating rapid product upgrades and replacements.

[0020] like Figure 2As shown, in this embodiment, the movable adapter plate 401 is provided with a plurality of equal-height screws 402 that cooperate with the active flip frame 303 for limiting. A floating spring 403 is sleeved on each equal-height screw 402, and the floating spring 403 is located between the active flip frame 303 and the nuts of the equal-height screws 402. The floating adapter plate 401 is floatingly connected to the active flip frame 303, thereby reducing the impact force generated when the drive adapter mechanism 4 starts folding, ensuring that no additional interference is introduced during the testing of the cable under test.

[0021] like Figure 3 As shown, in this embodiment, the driven flipping frame 304 includes a movable plate 308 and a pressure block 309. The pressure block 309 is connected to the movable plate 308 and cooperates to limit the movement of the cable 5 to be tested. Both ends of the movable plate 308 are connected to the hinge blocks 305. When the active flipping frame 303 drives the driven flipping frame 304 to move, the driven flipping frame 304 slides along the limiting sliding groove 306 away from the support shaft 302 under the limitation of the hinge blocks 305. The movable plate 308 and the pressure block 309 cooperate to clamp the cable 5 to be tested. The two sets of hinge blocks 305 realize the smooth movement limitation of the movable plate 308, ensuring the operational stability of the movable plate 308 during the folding process.

[0022] like Figure 2 As shown, in this embodiment, one end of the hinge block 305 is rotatably connected to the movable plate 308, and the other end of the hinge block 305 is rotatably connected to the support shaft 302. The movable plate 308 is provided with a clearance groove 310 that matches the hinge block 305. The hinge block 305 and the support shaft 302 cooperate to provide a flipping limit, thereby allowing the driven flipping frame 304 to simulate the actual deformation of the cabling.

[0023] like Figure 2 As shown, in this embodiment, the mounting plate 301 is also provided with a positioning pin 311 that cooperates with the driven tilting frame 304 for limiting. By setting the positioning pin 311 to position the driven tilting frame 304, the driven tilting frame 304 can be accurately stopped when it resets.

[0024] like Figure 4 and Figure 5As shown, in this embodiment, the drive adapter mechanism 4 further includes a servo motor 404 and a rotary bearing assembly 405 mounted on the base plate 1. One end of the movable adapter plate 401 is connected to the rotor of the servo motor 404, and the other end of the movable adapter plate 401 is connected to the rotary bearing assembly 405. The servo motor 404 drives the movable adapter plate 401 to rotate. The rotary bearing assembly 405 includes a bearing housing and a bearing. The bearing housing provides support to enable the movable adapter plate 401 to move stably, while the bearing ensures smooth rotation.

[0025] like Figure 5 As shown, in this embodiment, the test board 2 includes a communication board 201 and a processing card 202. The communication board 201 is connected to the connector via a second adapter cable 203, and the processing card 202 is electrically connected to the second adapter cable 203. The processing card 202 is used for operational testing and power supply, the communication board 201 is used for line continuity, and the second adapter cable 203 enables a flexible connection between the communication board 201 and the connector on the movable adapter board 401, ensuring smooth operation of the movable adapter board 401 while maintaining line continuity.

[0026] like Figure 4 and Figure 5 As shown, in this embodiment, the drive adapter mechanism 4 further includes a cable support base 406, on which a plurality of guide rollers 407 are rotatably disposed, and the second adapter cable 203 is wound around the guide rollers 407. By setting the guide rollers 407 to guide and limit the second adapter cable 203, the second adapter cable 203 will not interfere with the movement of the movable adapter plate 401 when the movable adapter plate 401 moves, while ensuring the stable connection of the second adapter cable 203. Although the embodiments of the present invention are described with reference to actual solutions, they do not constitute a limitation on the meaning of the present invention. Modifications to the embodiments and combinations with other solutions based on this specification will be obvious to those skilled in the art.

Claims

1. A wire folding test apparatus, characterized by: It includes the bottom plate (1), is provided with test board card (2), four axle bending mechanism (3) and two groups of drive switching mechanism (4) arranged on the both sides of test board card (2) on the bottom plate (1), four axle bending mechanism (3) is matched with the clamping of the wire to be measured (5), drive switching mechanism (4) includes movable switching plate (401), and the movable switching plate (401) of two groups drive switching mechanism (4) is connected with two movable ends of four axle bending mechanism (3) respectively and drives two movable ends of four axle bending mechanism (3) to make folding action, at least one movable switching plate (401) is provided with connector for electrical signal connection with the wire to be measured (5), and the connector is electrically connected with test board card (2).

2. The wire folding test apparatus of claim 1, wherein: The four axle bending mechanism (3) includes a mounting plate (301) and a pair of rotating frames, the rotating frame includes a support shaft (302), a driving turnover frame (303) and a driven turnover frame (304), the support shaft (302) is arranged on the mounting plate (301), the driving turnover frame (303) is movably arranged on the support shaft (302), the driven turnover frame (304) is limitingly matched with the support shaft (302) through a hinge block (305), the driving turnover frame (303) is provided with a limiting sliding groove (306) limitingly matched with the driven turnover frame (304), the driving turnover frame (303) is connected with the movable switching plate (401), the driven turnover frame (304) is clampedly connected with the wire to be measured (5), when the movable switching plate (401) drives the driving turnover frame (303) to rotate along the support shaft (302), the driven turnover frame (304) turns over along with the driving turnover frame (303) and slides and displaces along the limiting sliding groove (306).

3. The wire folding test apparatus of claim 2, wherein: The driven turnover frame (304) is provided with a first switching wire (307) electrically connected with the connector, and the wire to be measured (5) is communicated and connected with the connector through the first switching wire (307).

4. The wire folding test apparatus of claim 2, wherein: The movable switching plate (401) is provided with a plurality of equal-height screws (402) limitingly matched with the driving turnover frame (303), the equal-height screw (402) is sleeved with a floating spring (403), and the floating spring (403) is located between the driving turnover frame (303) and the nut of the equal-height screw (402).

5. The wire folding test apparatus of claim 2, wherein: The driven turnover frame (304) includes an activity plate (308) and a pressing block (309), the pressing block (309) is connected with the activity plate (308) and cooperates to limit the wire to be measured (5), both ends of the activity plate (308) are connected with the hinge block (305), when the driving turnover frame (303) drives the driven turnover frame (304) to move, the driven turnover frame (304) slides away from the support shaft (302) along the limiting sliding groove (306) under the limitation of the hinge block (305).

6. The wire folding test apparatus of claim 5, wherein: One end of the hinged block (305) is rotationally connected with the movable plate (308), and the other end of the hinged block (305) is rotationally connected with the support shaft (302), and the movable plate (308) is provided with an avoiding slot (310) matched with the hinged block (305).

7. The wire folding test apparatus of claim 2, wherein: The mounting plate (301) is further provided with a positioning pin (311) matched with the driven turnover frame (304).

8. The wire folding test apparatus of claim 1, wherein: The driving adapter mechanism (4) further comprises a servo motor (404) and a rotating bearing assembly (405) arranged on the bottom plate (1), one end of the movable adapter plate (401) is connected with the rotor of the servo motor (404), and the other end of the movable adapter plate (401) is connected with the rotating bearing assembly (405).

9. The wire folding test apparatus of claim 1, wherein: The test board card (2) comprises a communication board (201) and a processing card (202), the communication board (201) is connected with the connector through a second adapter wire (203), and the processing card (202) is electrically connected with the second adapter wire (203).

10. The wire folding test apparatus of claim 9, wherein: The driving adapter mechanism (4) further comprises a wire support seat (406), a plurality of guide rollers (407) are rotationally arranged on the wire support seat (406), and the second adapter wire (203) is arranged on the guide rollers (407).

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