Device for detecting clearance distance of rotating shaft of folding mobile phone

Abstract

The invention discloses a folding mobile phone rotating shaft clearance distance detection device which comprises a detection device body, a linear guide rail sliding block assembly, a laser displacement sensor, a circular ring piece bearing frame, a positioning circular ring piece, a horizontal guide plate and a displacement side plate. The horizontal guide plate is slidably arranged in the middle of the top end of the positioning ring piece, and the displacement side plate is slidably arranged in the middle of the outer wall of the horizontal guide plate. A two-dimensional pressure applying adjusting mechanism composed of a horizontal guide plate and a displacement side plate is adopted, traditional single-point-position constraint limitation is broken through through a transverse magnetic attraction positioning structure of the horizontal guide plate and a longitudinal universal pressure applying assembly of the displacement side plate, the pressure applying direction can achieve multi-angle deflection through the combined design of a movable universal ball and a hollow pressure applying rod, and the pressure applying effect is improved. And in cooperation with projection positioning of the positioning laser pen, it is ensured that a pressure applying point coincides with the stress center line of the rotating shaft all the time, and the problem of deformation detection distortion caused by fixed pressure applying direction of a traditional device is solved.

Description

Technical Field

[0001] This invention relates to the field of mobile phone hinge detection technology, and in particular to a device for detecting the misalignment distance of a folding mobile phone hinge. Background Technology

[0002] Foldable phones are portable mobile terminal devices that utilize flexible foldable displays and precision hinge mechanisms. Their hinge-like mechanical structure allows the device to freely switch between an unfolded and folded state. When unfolded, they offer a tablet-like display area to support multitasking and multimedia entertainment. When folded, they return to the compact form of a traditional candybar phone for enhanced portability. These products typically employ multi-layered composite flexible OLED displays, coupled with high-precision hinge components to achieve hundreds of thousands of reliable opening and closing cycles. Auxiliary structures such as a mid-frame support plate and stress buffer layer ensure the screen's flatness and durability during dynamic deformation. As the complexity of folding mechanism designs increases, the assembly precision and motion stability of the hinge components directly affect the overall lifespan and user experience. Therefore, quantitative testing of key hinge parameters is crucial. Among these, the hinge play distance, a core indicator reflecting the hinge component's fit clearance and dynamic damping characteristics, plays a critical role in optimizing the opening and closing feel, preventing abnormal wear, and ensuring overall device reliability. Therefore, non-destructive quantitative evaluation using specialized testing equipment is essential.

[0003] Traditional hinge mechanism gap detection devices for foldable mobile terminals suffer from a single-dimensional detection limitation when verifying vertical axial gaps due to the structural characteristics of their fixed positioning fixtures. They typically employ static clamping mechanisms to impose single-point constraints on the terminal under test, resulting in the inability to obtain dynamic gap parameters of the entire motion trajectory of the hinge assembly during Z-axis deformation analysis. This leads to data blind spots in the detection results, ultimately causing significant deviations between the quality assessment results and actual usage conditions, failing to meet the requirements for high-precision reliability verification. Therefore, this paper proposes a hinge misalignment distance detection device for foldable mobile phones. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, this invention proposes a device for detecting the virtual distance of the hinge of a folding mobile phone.

[0005] To solve the above-mentioned technical problems, the basic technical solution proposed by this invention is as follows: A device for detecting the misalignment distance of a folding phone hinge includes a detection device body, a linear guide rail slider assembly, a laser displacement sensor, a ring support frame, a positioning ring, a horizontal guide plate, and a displacement side plate. The positioning ring is connected to the detection device body via the ring support frame. The horizontal guide plate is slidably disposed at the top center of the positioning ring for applying lateral pressure to the folding phone. The displacement side plate is slidably disposed at the center of the outer wall of the horizontal guide plate for applying longitudinal pressure to the folding phone. A universal ball housing is detachably installed inside the displacement side plate, and a movable universal ball is provided on the inner wall of the universal ball housing for adjusting the angle of the applied pressure. A clamping shaft guide rod is detachably disposed inside the horizontal guide plate, and a clamping shaft return spring is wound on the outer wall of the clamping shaft guide rod. Circular ring clamping shafts are provided on both sides of the outer wall of the clamping shaft guide rod for fixing the slidable horizontal guide plate.

[0006] Preferably, a short magnetic strip is fixedly installed on the outer wall of the displacement side plate, a hollow pressure rod is threadedly engaged inside the movable universal ball, and a positioning laser pen is installed at the top center of the hollow pressure rod. The movable universal ball is rolled around the universal ball shell.

[0007] Preferably, the hollow pressure rod, the movable universal ball, and the universal ball casing are coaxial. When the positioning laser pen is turned on, its light passes through the interior of the hollow pressure rod and illuminates the part to be pressured. A hollow rod assist handle is fixedly provided on the top of the outer wall of the hollow pressure rod to facilitate the operator to rotate the hollow pressure rod. The hollow rod assist handle is set at an angle of 45 degrees.

[0008] Preferably, an internal threaded sleeve is fixedly provided on the inner wall of the displacement side plate, and an internal thread is twisted on the inner wall of the internal threaded sleeve. A universal ball threaded bolt is provided on the inner wall of the internal threaded sleeve through thread engagement.

[0009] Preferably, a friction pad is fixedly provided at the middle of one end of the universal ball threaded bolt, and a threaded bolt knob is fixedly installed at the middle of the other end of the universal ball threaded bolt, with the outer wall of the friction pad and the outer wall of the movable universal ball in contact with each other.

[0010] Preferably, the outer wall of the horizontal guide plate is provided with a magnetic strip correction groove at the displacement side plate position. A long magnetic strip is fixedly installed inside the magnetic strip correction groove. The outer wall of the long magnetic strip is in contact with the outer wall of the short magnetic strip, and the long magnetic strip and the short magnetic strip attract each other.

[0011] Preferably, the ring clamping shaft is slidably connected to the clamping shaft guide rod, and the two sets of ring clamping shafts are elastically connected by a clamping shaft return spring. A clamping shaft roller is provided on the outer wall of the ring clamping shaft, and a roller support ring is fixedly provided at the bottom of the outer wall of the ring clamping shaft. A guide rod threaded pin is provided on the top inner wall of the ring clamping shaft through thread engagement, and a threaded pin knob is fixedly installed at the top center of the guide rod threaded pin.

[0012] The beneficial effects of this invention are: The two-dimensional pressure adjustment mechanism, consisting of a horizontal guide plate and a displacement side plate, breaks through the traditional single-point constraint limitation through the transverse magnetic positioning structure of the horizontal guide plate and the longitudinal universal pressure component of the displacement side plate. The combination design of the movable universal ball and the hollow pressure rod allows the pressure direction to be deflected at multiple angles. With the projection positioning of the positioning laser pen, it ensures that the pressure point and the force center line of the rotating shaft always coincide, thus solving the deformation detection distortion problem caused by the fixed pressure direction of traditional devices. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the positioning ring component of the present invention; Figure 3 This is a schematic diagram of the horizontal guide plate structure of the present invention; Figure 4 This is a schematic diagram of the displacement side plate structure of the present invention; Figure 5 This is a schematic diagram of the internal structure of the displacement side plate of the present invention; Figure 6 This is a partial enlarged cross-sectional view of the present invention.

[0014] Explanation of reference numerals in the attached figures: 100. Positioning ring component; 200. Horizontal guide plate; 201. Clamping shaft guide rod; 202. Clamping shaft return spring; 203. Long magnetic strip; 204. Magnetic strip correction groove; 205. Ring component clamping shaft; 206. Roller support ring; 207. Clamping shaft roller; 208. Threaded pin knob; 209. Guide rod threaded pin; 300. Displacement side plate; 301. Universal ball housing; 302. Movable universal ball; 303. Internal threaded sleeve; 304. Threaded bolt knob; 305. Universal ball threaded bolt; 306. Friction pad; 307. Hollow pressure rod; 308. Hollow rod assist handle; 309. Positioning laser pointer; 310. Short magnetic strip; 400. Detection equipment body; 500. Laser displacement sensor; 600. Ring component support bracket; 700. Linear guide rail slider assembly. Detailed Implementation

[0015] The following will be combined with the appendix Figure 1 To be continued Figure 6 The technical solutions in the embodiments of the present invention have been clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0016] This invention provides a technical solution: a device for detecting the misalignment distance of a folding phone hinge, comprising a detection device body 400, a linear guide rail slider assembly 700, a laser displacement sensor 500, a ring support bracket 600, a positioning ring 100, a horizontal guide plate 200, and a displacement side plate 300. The horizontal guide plate 200 is slidably disposed at the top center of the positioning ring 100 for applying lateral pressure to the folding phone. The displacement side plate 300 is slidably disposed at the center of the outer wall of the horizontal guide plate 200 for applying longitudinal pressure to the folding phone. The folding phone to be tested is positioned directly below the positioning ring 100. The laser displacement sensor 500 is used for non-contact measurement of the misalignment distance between the folding surface and the unfolded surface of the hinge. The linear guide rail slider assembly 700 is used to drive the laser displacement sensor 500 to move linearly and realize the detection of the misalignment distance of the folding phone hinge. As prior art, this invention will not elaborate further. The positioning ring 100 is connected to the detection device body 400 through the ring support bracket 600.

[0017] Specifically, a short magnetic strip 310 is fixedly installed on the outer wall of the displacement side plate 300 to fix the sliding displacement side plate 300. A universal ball housing 301 is detachably installed inside the displacement side plate 300, and a movable universal ball 302 is provided on the inner wall of the universal ball housing 301 for adjusting the angle of the applied pressure. The movable universal ball 302 rolls with the universal ball housing 301. A hollow pressure rod 307 is threadedly engaged inside the movable universal ball 302, and a positioning laser pointer 309 is installed at the top center of the hollow pressure rod 307 for positioning the area to be pressured. The hollow pressure rod 307, the movable universal ball 302, and the universal ball housing 301 are coaxial. When the positioning laser pointer 309 is activated, its light passes through the interior of the hollow pressure rod 307 and illuminates the area to be pressured. A hollow... The hollow rod assist handle 308 facilitates the operator's rotation of the hollow pressure rod 307. The hollow rod assist handle 308 is set at a 45-degree angle. An internal threaded sleeve 303 is fixedly installed on the inner wall of the displacement side plate 300, and an internal thread is twisted on the inner wall of the internal threaded sleeve 303. A universal ball threaded bolt 305 is installed on the inner wall of the internal threaded sleeve 303 through thread engagement, which is used to limit the rotation of the movable universal ball 302. A friction pad 306 is fixedly installed in the middle of one end of the universal ball threaded bolt 305, which is used to pre-tighten and protect the movable universal ball 302. A threaded bolt knob 304 is fixedly installed in the middle of the other end of the universal ball threaded bolt 305, which is used to drive the universal ball threaded bolt 305. The outer wall of the friction pad 306 fits against the outer wall of the movable universal ball 302. A hole is opened through the outer wall of the universal ball casing 301 to facilitate the movement of the friction pad 306.

[0018] Specifically, the top of the horizontal guide plate 200 is provided with a graduated groove, and the outer wall of the horizontal guide plate 200 at the position of the displacement side plate 300 is provided with a magnetic strip correction groove 204 for stabilizing the displacement side plate 300 during the sliding process. A long magnetic strip 203 is fixedly installed inside the magnetic strip correction groove 204 to cooperate with the short magnetic strip 310 to fix the displacement side plate 300 after sliding. The outer wall of the long magnetic strip 203 and the outer wall of the short magnetic strip 310 are in contact with each other and attract each other. A clamping shaft guide rod 201 is detachably installed inside the horizontal guide plate 200, and a clamping shaft return spring 202 is wound on the outer wall of the clamping shaft guide rod 201. Circular clamping shaft 2 rings are provided on both sides of the outer wall of the clamping shaft guide rod 201. 05, used to fix the horizontal guide plate 200 after sliding. The ring clamping shaft 205 is slidably connected to the clamping shaft guide rod 201. The two sets of ring clamping shafts 205 are elastically connected by the clamping shaft return spring 202. The outer wall of the ring clamping shaft 205 is provided with clamping shaft rollers 207 to reduce friction at the connection. The bottom of the outer wall of the ring clamping shaft 205 is fixedly provided with roller support rings 206 to intercept the clamping shaft rollers 207. The top inner wall of the ring clamping shaft 205 is provided with guide rod threaded pins 209 through threaded engagement to squeeze the clamping shaft guide rod 201. The top center of the guide rod threaded pins 209 is fixedly installed with threaded pin knobs 208 to drive the guide rod threaded pins 209.

[0019] Based on the above, the present invention employs a two-dimensional pressure adjustment mechanism composed of a horizontal guide plate 200 and a displacement side plate 300. Through the lateral magnetic positioning structure of the horizontal guide plate 200 and the longitudinal universal pressure component of the displacement side plate 300, it breaks through the traditional single-point constraint limitation. The combined design of the movable universal ball 302 and the hollow pressure rod 307 allows the pressure direction to be deflected at multiple angles. With the projection positioning of the positioning laser pen 309, it ensures that the pressure point and the force center line of the rotating shaft always coincide, solving the deformation detection distortion problem caused by the fixed pressure direction in traditional devices. Through the adaptive clamping mechanism composed of the ring clamping shaft 205 and the clamping shaft return spring 202, and the fine-tuning locking mechanism of the guide rod threaded pin 209, it can be adapted to multiple folding terminals of different sizes.

[0020] Based on the disclosure and teachings of the foregoing specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on the present invention.

Claims

1. A device for detecting the misalignment distance of a folding mobile phone hinge, comprising a detection device body (400), a linear guide rail slider assembly (700), a laser displacement sensor (500), a circular ring support frame (600), a positioning circular ring (100), a horizontal guide plate (200), and a displacement side plate (300), characterized in that, The positioning ring (100) is connected to the detection equipment body (400) through the ring support bracket (600). The horizontal guide plate (200) is slidably disposed at the top center of the positioning ring (100) for applying lateral pressure to the folding mobile phone. The displacement side plate (300) is slidably disposed at the center of the outer wall of the horizontal guide plate (200) for applying longitudinal pressure to the folding mobile phone. The displacement side plate (300) is detachably fitted with a universal ball shell (301). Furthermore, a movable universal ball (302) is provided on the inner wall of the universal ball housing (301) for adjusting the angle of the applied pressure. A clamping shaft guide rod (201) is detachably provided inside the horizontal guide plate (200), and a clamping shaft return spring (202) is wound on the outer wall of the clamping shaft guide rod (201). A ring clamping shaft (205) is provided on both sides of the outer wall of the clamping shaft guide rod (201) for fixing the horizontal guide plate (200) after sliding.

2. The folding phone hinge misalignment distance detection device according to claim 1, characterized in that: A short magnetic strip (310) is fixedly installed on the outer wall of the displacement side plate (300). A hollow pressure rod (307) is threadedly engaged inside the movable universal ball (302), and a positioning laser pen (309) is installed at the top center of the hollow pressure rod (307). The movable universal ball (302) and the universal ball shell (301) are rolled together.

3. The folding phone hinge misalignment distance detection device according to claim 2, characterized in that: The hollow pressure rod (307), the movable universal ball (302), and the universal ball casing (301) are coaxial. When the positioning laser pen (309) is turned on, its light passes through the interior of the hollow pressure rod (307) and illuminates the part to be pressured. A hollow rod assist handle (308) is fixedly provided on the top of the outer wall of the hollow pressure rod (307) to facilitate the operator to rotate the hollow pressure rod (307). The hollow rod assist handle (308) is set at an angle of 45 degrees.

4. The folding phone hinge misalignment distance detection device according to claim 1, characterized in that: An internal threaded sleeve (303) is fixedly provided on the inner wall of the displacement side plate (300), and an internal thread is twisted on the inner wall of the internal threaded sleeve (303). A universal ball threaded bolt (305) is provided on the inner wall of the internal threaded sleeve (303) through thread engagement.

5. The folding phone hinge misalignment distance detection device according to claim 4, characterized in that: A friction pad (306) is fixedly provided at the middle of one end of the universal ball threaded bolt (305), and a threaded bolt knob (304) is fixedly installed at the middle of the other end of the universal ball threaded bolt (305). The outer wall of the friction pad (306) is in contact with the outer wall of the movable universal ball (302).

6. The folding phone hinge misalignment distance detection device according to claim 1, characterized in that: The outer wall of the horizontal guide plate (200) is provided with a magnetic strip correction groove (204) at the position of the displacement side plate (300). A long magnetic strip (203) is fixedly installed inside the magnetic strip correction groove (204). The outer wall of the long magnetic strip (203) is in contact with the outer wall of the short magnetic strip (310), and the long magnetic strip (203) and the short magnetic strip (310) attract each other.

7. The folding phone hinge misalignment distance detection device according to claim 6, characterized in that: The ring clamping shaft (205) is slidably connected to the clamping shaft guide rod (201). The two sets of ring clamping shafts (205) are elastically connected by the clamping shaft return spring (202). The outer wall of the ring clamping shaft (205) is provided with a clamping shaft roller (207). The bottom of the outer wall of the ring clamping shaft (205) is fixedly provided with a roller support ring (206). The top inner wall of the ring clamping shaft (205) is provided with a guide rod threaded pin (209) through thread engagement. The top center of the guide rod threaded pin (209) is fixedly installed with a threaded pin knob (208).

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