Safety mobile phone support with power-off protection function

Abstract

The invention provides a power-off protection safety mobile phone support, and particularly relates to the technical field of mobile phone supports, the power-off protection safety mobile phone support comprises a supporting base, a telescopic movable arm hinged to one side of the top of the supporting base, and a carrying plate hinged to the top of the telescopic movable arm; the device further comprises an active power-off mechanism and a follow-up protection mechanism. According to the safe mobile phone support with the power-off protection function, the change of current in the charging wire is captured in time through a micro-current sensor in the active power-off mechanism, when a mobile phone is fully charged, a signal of sudden current drop triggers a micro electromagnet to be powered off, and resilience force of a reset spring directly drives a charging connector to be separated from a mobile phone charging port; the mobile phone support is simple in structure and convenient to use, complete power failure on the physical level is formed instead of traditional circuit cut-off, potential safety hazards such as overcharging, heating and bulging caused by the fact that a mobile phone battery is in a charging state for a long time are effectively avoided, the safety worry about forgetting to pull out a charging line is solved, and the mobile phone support is particularly suitable for unattended scenes such as night charging and the like. And the practicability and the safety are obviously improved.

Description

Technical Field

[0001] This invention provides a safe mobile phone holder with power-off protection, specifically relating to the field of mobile phone holder technology. Background Technology

[0002] In the computer peripherals manufacturing industry, products such as human-computer interaction devices and graphics output devices are becoming increasingly common. As mobile terminals are frequently used, smartphones often require interactive operations and image display during daily use, naturally creating demand for related devices. Phone stands are one such peripheral product; they help stabilize the phone, facilitating human-computer interaction and graphics output, and meeting the phone's support and angle adjustment needs in daily use. Furthermore, some users habitually place their phones on phone stands while charging.

[0003] In the existing technology, there have been many improvements to the user experience of mobile phone stands. For example, the rechargeable stand that supports multiple port protocols disclosed in announcement number CN118488131B mainly solves the problems of traditional stands being inconvenient to move, charging cables being abnormally messy, angles not being adjustable, and being unable to be folded up when not in use. The combined multi-functional mobile phone stand disclosed in announcement number CN117615052B focuses on solving the problems of the stand becoming loose and unstable after long-term use.

[0004] However, these improvements are mostly focused on basic functions such as the ease of movement and structural stability of the stand, but they do not fully cover the core safety needs of users when charging. When the phone is fully charged on the stand, the existing stand cannot automatically disconnect the charging link and can only rely on the user to manually plug and unplug the charging cable. If the user forgets to do so, the phone will continue to charge, which poses a risk of overcharging.

[0005] Therefore, how to automatically disconnect the power after the phone is fully charged to avoid continuous charging has become a technical problem that existing phone holders urgently need to solve in charging scenarios. Summary of the Invention

[0006] In view of the deficiencies of the existing technology, the present invention provides a safe mobile phone holder with power failure protection, which can effectively solve the related technical problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: This invention discloses a power-off protection safety mobile phone holder, including a support base, a telescopic movable arm hinged to one side of the top of the support base, and a support plate hinged to the top of the telescopic movable arm. It also includes: active power-off mechanism and follow-up protection mechanism; The active power-off mechanism includes a slotted plate, a guide rail groove opened on the slotted plate, a combined telescopic block slidably disposed in the guide rail groove, a reset spring disposed in the guide rail groove and connected to the combined telescopic block, a slot support fixedly disposed on the top of the combined telescopic block, and a detection module for detecting changes in the charging wire current. The follow-up protection mechanism is linked with the active power-off mechanism.

[0008] Preferably, the card slot holder has a card slot for holding the charging cable connector, and the top two sides of the card slot holder have symmetrical abutment protrusions.

[0009] Preferably, the detection module includes an arc-shaped carrier plate, a microcurrent sensor mounted on the arc-shaped carrier plate, and a power supply module for powering the micro electromagnet and the microcurrent sensor. The power supply module consists of an external battery compartment and a button battery pack inside the compartment.

[0010] Preferably, when the miniature electromagnet is energized, it attracts the magnetic sheet, causing the card slot holder to keep the charging connector inserted into the mobile phone charging port; when the miniature electromagnet is de-energized, the reset spring causes the combined telescopic block and the card slot holder to reset along the guide rail groove, causing the charging connector to separate from the mobile phone charging port.

[0011] Compared with the known prior art, the technical solution provided by this invention has the following beneficial effects: This power-off safety phone holder uses a micro-current sensor in its active power-off mechanism to detect changes in the current in the charging cable. When the phone is fully charged, a sudden drop in current triggers a miniature electromagnet to cut off the power. The return force of the reset spring directly separates the charging connector from the phone's charging port, creating a complete physical power-off rather than a traditional circuit cutoff. This effectively avoids safety hazards such as overcharging, overheating, and bulging caused by the phone battery being in a charging state for a long time, and solves the safety concerns of users when they forget to unplug the charging cable. This phone holder is especially suitable for unattended scenarios such as charging at night, and its practicality and safety are significantly improved. The card slot holder and the contact protrusion are made of elastic rubber. Utilizing the elastic deformation properties of rubber, it can not only adapt to charging connectors of different specifications such as Type-C and Lightning, but also be compatible with non-standard connectors with slight surface wear or minor size differences. The clamping force generated by the deformation ensures that the connector is stably fixed. The combined telescopic block adopts an interference fit structure of guide block and adjustment block. Users can manually adjust the height of the adjustment block according to the thickness of the phone itself or the phone case, so that the charging connector can be accurately aligned with the charging port of devices of different thicknesses. The adaptation adjustment can be achieved without replacing special brackets or accessories or additional tools, making the bracket compatible with most models of smartphones on the market, greatly expanding the applicability of the bracket. Meanwhile, when the user pushes the combined telescopic block to connect the charging connector, the linkage strip synchronously drives the gear transmission, ultimately causing the L-shaped extensions on both sides to automatically move closer to the phone, forming a side protective barrier. This effectively prevents the phone from slipping due to accidental bumps, slight shaking of the stand, or tilting of the table. The protective action is triggered simultaneously with the charging action, requiring no additional user operation. The protection automatically deactivates when the phone is fully charged, ensuring safety during the charging process without affecting the user's convenience in taking the phone in and out, thus balancing safety and practicality. Attached Figure Description

[0012] Figure 1 This is a front-view perspective view of the present invention. Figure 2 This is a schematic diagram illustrating the usage state of the present invention; Figure 3 This is a bottom-view perspective view of the structure of the present invention; Figure 4 This is a partial three-dimensional structural diagram of the relevant components at the active power-off mechanism in this invention; Figure 5 This is a partial three-dimensional structural diagram of the relevant components at the active power-off mechanism in this invention from another perspective; Figure 6 This is a partial three-dimensional structural diagram of the relevant components in the cross-section state of the grooved plate component in this invention; Figure 7 This is a partial three-dimensional structural diagram of the relevant components at the combined telescopic block in this invention; Figure 8 This is a partial three-dimensional structural diagram of the relevant components of the follow-up protection mechanism in this invention; Figure 9 This is a partial three-dimensional structural diagram of the relevant components of the follow-up protection mechanism in this invention from another perspective.

[0013] The labels in the diagram represent: 1. Support base; 11. Telescopic arm; 12. Loading plate; 2. Active power-off mechanism; Separation components: 21. Slotted plate; 22. Guide rail slot; 23. Combined telescopic block; 231. Miniature electromagnet; 232. Magnetic sheet; 233. Guide block; 234. Adjusting block; 24. Return spring; 25. Slot support; 251. Slot; 252. Abutment protrusion; Monitoring modules: 26. Curved carrier plate; 27. Microcurrent sensor; 28. Power supply module; 3. Follow-up protection mechanism; 31. Linkage strip component; 32. Strip toothed plate; 33. Reversing gear; 34. Linkage gear; 35. Mirror rack; 351. Limiting groove plate; 36. Concave frame; 361. L-shaped extension. Detailed Implementation

[0014] The present invention will be further described below with reference to embodiments.

[0015] Example 1:

[0016] like Figures 1 to 7 As shown, a power-off protection safety mobile phone holder includes a support base 1, a telescopic movable arm 11 hinged to one side of the top of the support base 1, and a support plate 12 hinged to the top of the telescopic movable arm 11.

[0017] It also includes: active power-off mechanism 2; Further implemented, the active power-off mechanism 2 includes a slotted plate 21, a guide rail groove 22 formed on the slotted plate 21, a combined telescopic block 23 slidably disposed within the guide rail groove 22, a reset spring 24 disposed within the guide rail groove 22 and connected to the combined telescopic block 23, a slot support 25 fixedly disposed on the top of the combined telescopic block 23, and a detection module for detecting changes in the charging cable current; a guide post is sleeved on the inner side of the spring, the guide post being integrally formed with the slotted plate 21, which can prevent lateral bending when the spring is compressed or reset, ensuring that the spring force direction is along the axis of the guide rail groove 22, and preventing the combined telescopic block 23 from sliding and getting stuck. The slot support 25 has a slot 251 for engaging the charging cable connector, and symmetrical abutment protrusions 252 are provided on both sides of the top of the slot support 25. Both the card slot holder 25 and the abutment protrusion 252 are made of elastic rubber. The advantage of this design is that the elastic rubber's deformation capability can adapt to the outer wall of different specifications of charging connectors. It can not only form a clamping force through the abutment protrusion 252 to prevent the connector from loosening, but also avoid rigid contact from causing scratches or pressure damage to the charging connector shell.

[0018] Furthermore, the detection module includes an arc-shaped carrier plate 26, a micro-current sensor 27 mounted on the arc-shaped carrier plate 26, and a power supply module 28 for powering the miniature electromagnet 231 and the micro-current sensor 27. The power supply module 28 consists of an external battery compartment and a button battery pack inside the compartment. Its inner arc surface fits against the outer wall of the charging cable to ensure that the detection end of the micro-current sensor 27 can stably collect current signals. The external battery compartment of the power supply module 28 adopts a snap-on detachable design and is assembled on the rear side of the support base 1, which facilitates the replacement of the button battery pack in the future. A miniature toggle switch is provided on the outside of the battery compartment, which can disconnect the power supply when idle to save energy.

[0019] Specifically, when the miniature electromagnet 231 is energized, it attracts the magnetic sheet 232, causing the card slot holder 25 to keep the charging connector inserted into the mobile phone charging port. When the miniature electromagnet 231 is de-energized, the reset spring 24 drives the combined telescopic block 23 and the card slot holder 25 to reset along the guide rail groove 22, causing the charging connector to separate from the mobile phone charging port.

[0020] As a further implementation, the combined telescopic block 23 includes a guide block 233 that slides within the guide rail groove 22 and an adjusting block 234 that slides within the guide block 233. The adjusting block 234 and the guide block 233 are in an interference fit. The purpose of the interference fit is to achieve the height positioning of the adjusting block 234 without additional locking components. When adapting to mobile phones or phone cases of different thicknesses, the adjusting block 234 can be manually pushed to slide along the inner cavity of the guide block 233. After adjustment, the static friction generated by the interference fit can maintain the current height, preventing the charging connector from shifting in height due to gravity or slight vibration. A miniature electromagnet 231 is embedded in the bottom of the guide block 233. The embedded design protects the electromagnet from external impact damage, and its pins are connected to the power supply module 28 via FPC flexible wires along the wiring groove at the bottom of the slotted plate 21 to prevent the exposed wires from being pulled. A magnetic sheet 232 that cooperates with the miniature electromagnet 231 is fixed on one side of the bottom of the slotted plate 21.

[0021] As a further implementation, the guide block 233 has arc grooves on both sides that are adapted to the guide rail groove 22. The guide rail groove 22 slides with the arc grooves, which can limit the vertical displacement of the guide block 233 and prevent it from falling out of the guide rail groove 22, and also ensure the stability during the sliding process. At the same time, the surface of the guide block 233 is provided with a wear-resistant coating, which can reduce the coefficient of friction with the inner wall of the guide rail groove 22 and extend its service life.

[0022] Example 2:

[0023] like Figure 1 , Figure 8 , Figure 9 As shown, the aforementioned power-off protection safety phone holder also includes a follow-up protection mechanism 3; the follow-up protection mechanism 3 is linked with the active power-off mechanism 2, and the follow-up protection mechanism 3 is synchronously driven by the sliding action of the combined telescopic block 23 in the active power-off mechanism 2 to achieve side protection of the phone.

[0024] Further implemented, the follow-up protection mechanism 3 includes a linkage bar 31 fixedly connected to the bottom of the combined telescopic block 23. The end of the linkage bar 31 away from the combined telescopic block 23 is provided with a strip-shaped toothed plate 32. In specific connection, the linkage bar 31 is fixed to the bottom of the guide block 233 of the combined telescopic block 23 by countersunk screws. The strip-shaped toothed plate 32 is integrally formed with the linkage bar 31 and is made of stainless steel to ensure the strength of the tooth surface and avoid tooth wear and deformation caused by long-term meshing transmission.

[0025] Furthermore, the follow-up protection mechanism 3 also includes a reversing gear 33 meshing with the strip-shaped toothed plate 32, a linkage gear 34 coaxially connected to the reversing gear 33, two mirror racks 35 meshing with the linkage gear 34 and arranged in parallel, and a concave frame 36 fixedly connected to the mirror racks 35. An L-shaped extension 361 is integrally formed on the concave frame 36. The two mirror racks 35 are slidably disposed on the bottom of the support plate 12 through a linear sliding groove structure. The tooth surfaces of the two racks are arranged opposite each other to ensure that they can move away or closer to each other synchronously when meshing with the reversing gear 33.

[0026] Specifically, the linear groove structure includes a limiting groove plate 351 fixedly disposed at the bottom of the support plate 12 and used to guide the mirror rack 35. The limiting groove plate 351 has a groove for the mirror rack 35 to slide and translate. The limiting groove plate 351 is fixed to the bottom of the support plate 12 by screws. Solid grease can be applied to the inner wall of its groove during assembly, which can further reduce the friction loss when the mirror rack 35 slides. At the same time, the end of the mirror rack 35 is connected to the concave frame 36 by self-tapping screws. A flexible buffer pad is attached to the inner wall of the concave frame 36. When the L-shaped extension 361 abuts against the side of the mobile phone, the buffer pad can avoid the scratches on the mobile phone shell caused by rigid contact, and can adapt to mobile phones of different widths through deformation, thereby improving the protective adaptability.

[0027] In addition, the free end of the L-shaped extension 361 is provided with an arc transition angle to prevent sharp edges from scratching the user or mobile phone during the protection process; the length of the linkage strip 31 is designed according to the size of the support plate 12 to ensure that when the combined telescopic block 23 slides to the charging position, the meshing depth of the strip toothed plate 32 and the reversing gear 33 remains stable, avoiding excessively shallow meshing that could cause tooth dislodgement.

[0028] The complete working principle of the above embodiments one and two is as follows: In actual use, the user first places the phone stably on the support plate 12, and then manually pushes the adjusting block 234 in the combined telescopic block 23 according to the thickness of the phone or the size of the phone case, so that it slides along the inner cavity of the guide block 233 to a suitable height. The static friction generated by the two interference fits will firmly lock the position of the adjusting block 234, and the height can be kept stable without the need for additional locking parts.

[0029] The charging cable connector is then inserted into the slot 251 of the card holder 25. The elastic rubber material of the card holder 25 and the contact protrusion 252 deforms, tightly wrapping the outer wall of the connector, forming a reliable clamping force to prevent the connector from loosening without damaging the connector shell. Next, the combined telescopic block 23 is manually pushed to slide along the guide rail groove 22 toward the mobile phone, so that the charging connector is accurately inserted into the mobile phone charging port. During this process, the return spring 24 is compressed. Simultaneously, the miniature electromagnet 231 at the bottom of the guide block 233 moves with the combined telescopic block 23 to directly above the magnetic sheet 232. After the charging cable is powered on, the micro-current sensor 27 attached to the outer wall of the charging cable detects the charging current. The power supply module 28 supplies power to the miniature electromagnet 231 through a preset circuit. After being powered on, the miniature electromagnet 231 and the magnetic sheet 232 generate an attractive force, locking the combined telescopic block 23 in the current position, ensuring that the charging connector and the mobile phone charging port maintain stable contact and achieve normal charging.

[0030] When the phone is fully charged, the current in the charging cable drops sharply. The micro-current sensor 27 detects this change and triggers the power supply module 28 to cut off the power supply to the miniature electromagnet 231, causing the attraction force to disappear instantly. At this time, the return spring 24, under its restoring force, pushes the combined telescopic block 23 and the card slot bracket 25 to reset in the opposite direction along the guide rail groove 22. The charging connector moves synchronously with the card slot bracket 25, completely separating from the phone's charging port, completing the physical power disconnection. When not in use, the user can disconnect the power supply via the miniature toggle switch on the outside of the power supply module 28, extending the lifespan of the button battery pack.

[0031] At the same time, when the user pushes the combined telescopic block 23 to slide towards the mobile phone to insert the charging connector, the linkage bar 31 at the bottom of the combined telescopic block 23 moves synchronously, and the strip tooth plate 32 at the end of the linkage bar 31 moves accordingly and meshes with the reversing gear 33.

[0032] The linkage gear 34 meshes with the mirror racks 35 on both sides, and the tooth surfaces of the two mirror racks 35 are arranged opposite each other, so that the rotation of the linkage gear 34 is converted into the opposite movement of the two mirror racks 35 along the groove of the limiting groove plate 351. The mirror racks 35 drive the concave frame 36 and the L-shaped extension 361 fixedly connected to it to move towards the sides of the mobile phone simultaneously until the flexible buffer pad inside the concave frame 36 touches the side of the mobile phone, forming reliable side protection.

[0033] When the phone is fully charged, the combined telescopic block 23 of the active power-off mechanism 2 reverses and resets. The linkage bar 31 drives the strip toothed plate 32 to move in the opposite direction. Through gear transmission, the two mirrored racks 35 move in the opposite direction along the groove of the limiting groove plate 351. The concave frame 36 and the L-shaped extension 361 move away from the sides of the phone simultaneously, automatically releasing the protection and not affecting the user's ability to take the phone. The length of the linkage bar 31 is adapted to the sliding distance of the combined telescopic block 23 to achieve the mobile phone charging distance. Specifically, it ensures that when the combined telescopic block 23 slides to the charging position, the meshing depth between the strip toothed plate 32 and the reversing gear 33 remains stable, effectively preventing tooth disengagement.

[0034] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A power-off protection safety mobile phone holder, comprising a support base (1), a telescopic movable arm (11) hinged to one side of the top of the support base (1), and a support plate (12) hinged to the top of the telescopic movable arm (11). Its features are, Also includes: Active power-off mechanism (2) and follow-up protection mechanism (3); The active power-off mechanism (2) includes a slotted plate (21), a guide rail groove (22) opened on the slotted plate (21), a combined telescopic block (23) slidably disposed in the guide rail groove (22), a reset spring (24) disposed in the guide rail groove (22) and connected to the combined telescopic block (23), a card slot support (25) fixedly disposed on the top of the combined telescopic block (23), and a detection module for detecting changes in the charging wire current; The follow-up protection mechanism (3) is linked with the active power-off mechanism (2).

2. The power-off protection safety phone holder according to claim 1, characterized in that, The combined telescopic block (23) includes a guide block (233) that slides in the guide rail groove (22) and an adjusting block (234) that slides in the guide block (233). A miniature electromagnet (231) is embedded in the bottom of the guide block (233), and a magnetic sheet (232) that cooperates with the miniature electromagnet (231) is fixed on one side of the bottom of the groove plate (21).

3. The power-off protection safety phone holder according to claim 2, characterized in that, The adjusting moving block (234) and the guiding fixed block (233) are interference fit.

4. The power-off protection safety phone holder according to claim 1, characterized in that, The card slot holder (25) is provided with a card slot (251) for attaching the charging cable connector, and the card slot holder (25) is provided with symmetrical abutment protrusions (252) on both sides of the top.

5. The power-off protection safety phone holder according to claim 4, characterized in that, Both the card slot support (25) and the abutment protrusion (252) are made of elastic rubber.

6. The power-off protection safety phone holder according to claim 1, characterized in that, The detection module includes an arc-shaped carrier plate (26), a microcurrent sensor (27) mounted on the arc-shaped carrier plate (26), and a power supply module (28) for powering the micro electromagnet (231) and the microcurrent sensor (27). The power supply module (28) consists of an external battery compartment and a button battery pack inside the compartment.

7. The power-off protection safety phone holder according to claim 6, characterized in that, When the miniature electromagnet (231) is energized, it attracts the magnetic sheet (232), causing the card slot holder (25) to keep the charging connector in the state of being inserted into the mobile phone charging port; when the miniature electromagnet (231) is de-energized, the reset spring (24) causes the combined telescopic block (23) and the card slot holder (25) to reset along the guide rail groove (22), so that the charging connector is separated from the mobile phone charging port.

8. The power-off protection safety phone holder according to claim 1, characterized in that, The follow-up protection mechanism (3) includes a linkage bar (31) fixedly connected to the bottom of the combined telescopic block (23), and a strip toothed plate (32) is provided at the end of the linkage bar (31) away from the combined telescopic block (23).

9. The power-off protection safety phone holder according to claim 5, characterized in that, The follow-up protection mechanism (3) further includes a reversing gear (33) meshing with the strip toothed plate (32), a linkage gear (34) coaxially connected with the reversing gear (33), two mirror racks (35) meshing with the linkage gear (34) and arranged in parallel, and a concave frame (36) fixedly connected to the mirror racks (35), with an L-shaped extension (361) integrally formed on the concave frame (36). Among them, two mirror racks (35) are slidably set at the bottom of the support plate (12) through a linear groove structure.

10. The power-off protection safety phone holder according to claim 9, characterized in that, The linear chute structure includes a limiting groove plate (351) fixedly disposed at the bottom of the support plate (12) and used to guide the mirror rack (35). The limiting groove plate (351) has a groove for the mirror rack (35) to slide and translate.

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