CN117948343A - Locking assembly, hinge mechanism and foldable electronic device - Google Patents

Abstract

The embodiments of the present application disclose a locking assembly, a rotating shaft mechanism and a foldable electronic device, which relate to the field of foldable devices and improve the problem of short service life of foldable electronic devices. The specific scheme is: the locking assembly includes a first locking part and a second locking part, and the locking assembly is connected to the rotating shaft; when the rotation speed of the rotating shaft in the forward direction reaches a preset rotation speed, the first locking part is engaged with the second locking part; when the rotating shaft rotates in the reverse direction, the first locking part is separated from the second locking part. For example, when the rotating shaft speed reaches a preset speed, the first locking part overcomes the elastic force of the elastic member and engages with the second locking part, or the first locking part deviates from the center of the rotating shaft and engages with the second locking part to realize the self-locking function. When the foldable electronic device falls to the ground, the self-locking function is activated to reduce the damage to the rotating shaft caused by the second landing.

Description

Locking assembly, hinge mechanism and foldable electronic device

Technical Field

Embodiments of the present application relate to the field of foldable devices, and more particularly to a locking assembly, a hinge mechanism, and a foldable electronic device.

Background technique

As users' requirements for the portability of electronic devices increase, foldable electronic devices have attracted much attention, such as notebooks, foldable mobile phones, etc. The mechanical reliability of foldable electronic devices has a great impact on their service life.

FIG1a is a schematic diagram of the structure of the foldable electronic device 001 just after one end touches the ground, and FIG1b is a schematic diagram of the structure of the foldable electronic device 001 after touching the ground. It can be seen from FIG1a and FIG1b that after the foldable electronic device 001 touches the ground, due to inertia, the shaft 002 rotates under the force of the ground on the foldable electronic device 001, so that the foldable electronic device 001 changes from the unfolded state to the folded state or the semi-folded state. Then the shaft 002 falls for the second time and is impacted. The shaft 002 may be damaged or deformed, which may cause the screen 003 to be redundant in size, or even cause black spots on the screen 003.

Reducing the damage to the rotating shaft after the foldable electronic device falls is beneficial to improving the mechanical reliability of the foldable electronic device.

At present, some foldable electronic devices use acceleration sensors and solenoid valves to control the movement of the shaft. For example, the acceleration sensor determines whether the device is weightless. When the acceleration sensor determines that the device is weightless, the solenoid valve controls the shaft to lock. However, when the electronic device is out of power or turned off, the acceleration sensor and solenoid valve do not work, and the protection mechanism is lost.

Summary of the invention

The embodiments of the present application provide a locking assembly, a hinge mechanism and a foldable electronic device, which improve the damage to the hinge after the foldable electronic device falls.

In order to achieve the above objectives, this application adopts the following technical solutions:

In the first aspect, a locking assembly is provided, which is used to connect with the rotating shaft of a foldable electronic device, and includes a rotating wheel, a first locking part, a locking disk and a second locking part, wherein the rotating wheel is used to connect with the rotating shaft; the first locking part is connected with the outer peripheral wall of the rotating wheel; the locking disk is sleeved outside the rotating wheel; the second locking part is connected with the inner peripheral wall of the locking disk; when the rotating shaft reaches a preset speed along the forward direction, the first locking part moves close to the second locking part and engages with the second locking part; when the first locking part and the second locking part are in an engaged state and the rotating shaft rotates in the reverse direction, the first locking part is separated from the second locking part. Thus, when the foldable electronic device falls to the ground and the foldable electronic device has a tendency to fold under the reaction force of the ground, the first locking part is engaged with the second locking part, the rotating shaft is restrained from continuing to rotate, and the foldable electronic device is restrained from continuing to fold, the rotating shaft is less damaged when the rotating shaft lands, and the degree of damage to the display screen is reduced, which is conducive to improving the service life of the foldable electronic device. When the foldable electronic device has a tendency to unfold under the reaction force of the ground, the shaft rotates in the opposite direction under the action of inertia, the shaft is not locked, the foldable electronic device can unfold at a larger angle, and the shaft is less damaged after landing for the second time. When the shaft is locked, it can be unlocked by rotating the shaft in the opposite direction. Therefore, the locking component can protect the shaft and display screen of the foldable electronic device from damage after falling.

In combination with the first aspect, in some achievable ways, the rotating wheel includes: a wheel disc and an elastic member, the wheel disc is used to be fixedly connected to the rotating shaft; one end of the first locking portion is rotationally connected to the wheel disc, and the other end of the first locking portion is elastically connected to the wheel disc through the elastic member. When the rotation speed of the rotating shaft in the forward direction reaches a preset rotation speed, the first locking portion rotates relative to the wheel disc so that one end of the first locking portion moves close to the second locking portion and engages with the second locking portion; when the first locking portion and the second locking portion are in an engaged state and the rotating shaft rotates in the reverse direction, the elastic member separates the first locking portion from the second locking portion. Thus, the elastic member can make the first locking portion approach or move away from the second locking portion, thereby realizing the separation and engagement of the first locking portion and the second locking portion.

In combination with the first aspect, in some achievable embodiments, the rotating wheel further includes: a guide rod; the elastic member is sleeved outside the guide rod, the guide rod is slidably connected to the first locking portion, and one end of the guide rod is connected to the wheel disc. When the rotation speed of the rotating shaft in the forward direction reaches a preset rotation speed, the first locking portion slides relative to the guide rod so that one end of the first locking portion approaches the second locking portion and engages with the second locking portion; when the first locking portion and the second locking portion are in an engaged state and the rotating shaft rotates in the reverse direction, the elastic member causes the first locking portion to slide relative to the guide rod and separate from the second locking portion. Thus, the guide rod guides the first locking portion to prevent the first locking portion from deviating from its trajectory during movement and failing to engage or separate smoothly with the second locking portion.

In combination with the first aspect, in some achievable ways, the rotating wheel further comprises: a guide rod and a limiter, the limiter is connected to the wheel disc, the elastic member is sleeved outside the guide rod, the guide rod is slidably connected to the first locking portion, the guide rod passes through the limiter and is slidably connected to the limiter; the opposite ends of the elastic member are elastically connected to the guide rod and the limiter respectively; or, the opposite ends of the elastic member are elastically connected to the limiter and the first locking portion respectively. When the rotation speed of the rotating shaft in the positive direction reaches a preset rotation speed, the first locking portion slides with the guide rod relative to the limiter together so that one end of the first locking portion approaches the second locking portion and engages with the second locking portion; when the first locking portion and the second locking portion are in an engaged state and the rotating shaft rotates in the reverse direction, the elastic member causes the first locking portion and the guide rod to slide relative to the limiter together and move away from the second locking portion. Thus, the limiting member can constrain the movement trajectory of the guide rod, so that the first locking portion and the second locking portion can be smoothly engaged or reset.

In combination with the first aspect, in some achievable ways, the first locking part is fixedly connected to the rotating wheel; the rotating wheel is used to be movably connected to the rotating shaft; when the rotating shaft reaches a preset rotating speed in the forward direction, the axis of the rotating shaft deviates from the center of the rotating wheel so that the first locking part is engaged with the second locking part; when the first locking part and the second locking part are in an engaged state and the rotating shaft rotates in the reverse direction, the axis of the rotating shaft coincides with the center of the rotating wheel so that the first locking part is separated from the second locking part. Thus, the rotating shaft is locked when the forward speed is too large, the foldable electronic device cannot continue to fold, and the foldable electronic device is less damaged to the rotating shaft after falling.

In combination with the first aspect, in some achievable ways, the rotating wheel includes a wheel disc, a first limiting portion, a second limiting portion and a positioning member, the wheel disc is sleeved outside the positioning member, the first limiting portion and the second limiting portion are spaced and distributed on the inner peripheral wall of the wheel disc, and the first locking portion is connected to the outer peripheral wall of the wheel disc; the positioning member is used to connect with the rotating shaft, and the first limiting portion or the second limiting portion abuts against the positioning member; when the first limiting portion abuts against the positioning member and the rotating shaft reaches a preset speed in the positive direction, the axis of the rotating shaft deviates from the center of the rotating wheel; when the second limiting portion abuts against the positioning member and the rotating shaft rotates in the reverse direction, the axis of the rotating shaft coincides with the center of the rotating wheel. Thus, the interaction force between the first limiting portion or the second limiting portion and the rotating shaft causes the rotating shaft to rotate synchronously with the wheel disc, and when the interaction force suddenly increases, the first locking portion and the second locking portion engage to lock the rotating shaft.

In combination with the first aspect, in some achievable manners, the positioning member is an open-loop structure, and the two opposite ends of the open-loop structure are respectively used to abut against the first limit portion or the second limit portion. The open-loop structure and the rotating shaft can rotate synchronously, and the open-loop structure is suitable for cylindrical rotating shafts, and no additional processing is required for standard rotating shafts, and the applicability is wide.

In combination with the first aspect, in some achievable manners, the rotating shaft includes a special-shaped section, the special-shaped section includes a first abutting portion and a second abutting portion; the rotating wheel includes a wheel disc, a first limiting portion and a second limiting portion, the first limiting portion and the second limiting portion are spaced apart and distributed on the inner peripheral wall of the wheel disc, and the first locking portion is connected to the outer peripheral wall of the wheel disc;

The first abutting portion is used to abut against the first limiting portion of the rotating wheel, and the second abutting portion is used to abut against the second limiting portion of the rotating wheel; when the first limiting portion abuts against the first abutting portion, and the rotation speed of the rotating shaft in the forward direction reaches a preset rotation speed, the axis of the rotating shaft deviates from the center of the rotating wheel; when the second limiting portion abuts against the second abutting portion, and the rotating shaft rotates in the reverse direction, the axis of the rotating shaft coincides with the center of the rotating wheel. Thus, the interaction between the first abutting portion and the first limiting portion can make the special-shaped segment and the wheel disc rotate synchronously or the special-shaped segment be locked, thereby preventing the foldable electronic device from further folding.

In a second aspect, a shaft mechanism is provided, the shaft mechanism comprising: a shaft and any one of the locking components provided in the second aspect, the shaft being connected to the rotating wheel. Obviously, the shaft mechanism has a self-locking function when the rotation speed in the forward direction is too fast, which can prevent the foldable electronic device from further folding.

In conjunction with the second aspect, in some achievable manners, the rotating shaft mechanism further comprises: a driving shaft and a gear pair, wherein the driving shaft is connected to the rotating shaft via the gear pair, so that the torque of the rotating shaft can be transmitted to the driving shaft via the gear pair, and the locking mechanism can lock the rotating shaft and the driving shaft at the same time.

In a third aspect, a foldable electronic device is provided, the foldable electronic device comprising: a first middle frame, a second middle frame and any one of the hinge mechanisms provided in the second aspect, the first middle frame and the second middle frame being rotatably connected via the hinge mechanism. Thus, the foldable electronic device can be locked when folded quickly to prevent it from further folding, and the hinge mechanism is self-locking after the foldable electronic device falls to the ground, reducing damage to the hinge and the display screen.

In conjunction with the third aspect, in some achievable manners, when the shaft rotates in the opposite direction, the angle between the plane where the first middle frame is located and the plane where the second middle frame is located increases, so that the foldable electronic device is unfolded. Thus, when the foldable electronic device is folded quickly, the shaft is locked and no longer folded further, reducing damage to the shaft.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1a is a schematic diagram of the structure of a foldable electronic device with one end just touching the ground.

FIG. 1 b is a schematic diagram of the structure of the foldable electronic device after landing.

FIG. 2 a is a schematic diagram of the exploded structure of a foldable electronic device provided in an embodiment of the present application.

FIG. 2 b is a schematic diagram of the structure of a foldable electronic device provided in an embodiment of the present application.

FIG. 2c is a schematic diagram of the structure of another foldable electronic device provided in an embodiment of the present application.

FIG. 3 is a schematic diagram of the structure of the rotating shaft mechanism provided in an embodiment of the present application.

FIG. 4 a is a schematic structural diagram of a locking assembly provided in an embodiment of the present application.

FIG. 4 b is a schematic structural diagram of the locking assembly in FIG. 4 a in a locked state.

FIG. 4c is a schematic diagram of a state of a foldable electronic device.

FIG. 4d is a schematic structural diagram of the guide rod and the elastic member in FIG. 4a .

FIG. 4e is a schematic diagram of a connection between the elastic member and the wheel disc.

FIG. 4f is another schematic diagram of the connection between the elastic member and the wheel disc.

FIG. 5 a is a schematic structural diagram of another locking assembly provided in an embodiment of the present application.

FIG. 5 b is a schematic structural diagram of the locking assembly in FIG. 5 a in a locked state.

FIG5c is a schematic diagram of the structure of a roulette wheel provided in an embodiment of the present application.

FIG5 d is a schematic diagram of the structure of a rotating shaft provided in an embodiment of the present application.

FIG. 6 a is a schematic structural diagram of another locking assembly provided in an embodiment of the present application.

FIG. 6 b is a schematic structural diagram of a positioning member and a rotating shaft.

FIG. 6 c is a schematic structural diagram of the locking assembly in FIG. 6 a in a locked state.

In the figure: 001-foldable electronic device; 002-rotating shaft; 003-screen; 01-foldable electronic device; 11-cover; 12-display screen; 13-middle frame assembly; 30-rotating shaft mechanism; 14-back cover; 10-first middle frame; 20-second middle frame; 100-rotating shaft; 101-special-shaped section; 102-first abutting portion; 103-second abutting portion; 104-slide groove; 110-driving shaft; 120-gear pair; 130-connecting rod; 200-locking assembly; 210-rotating wheel; 201-first limiting portion; 202-second limiting portion; 211-wheel disc; 212-elastic member; 213-guide rod; 214-limiting member; 215-positioning member; 220-first locking portion; 230-locking disc; 240-second locking portion.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present application more clear, the present application will be further described in detail below in conjunction with the accompanying drawings.

In the following, the terms "first", "second", etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the feature. In the description of this application, unless otherwise specified, "plurality" means two or more.

In addition, in the present application, directional terms such as "upper" and "lower" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they can change accordingly according to the changes in the orientation of the components in the drawings.

The embodiment of the present application provides a foldable electronic device. The electronic device may be a foldable mobile phone, an electronic reader, a remote control, a laptop computer, a personal digital assistant (PDA), a vehicle-mounted device, an Internet TV, a TV, or the like. The embodiment of the present application does not impose any special restrictions on the form of the above-mentioned foldable electronic device, and the foldable electronic device is described below as an example of a foldable mobile phone.

FIG2a is an exploded structural diagram of a foldable electronic device 01 provided in an embodiment of the present application. As shown in FIG2a , the foldable electronic device 01 includes a cover 11, a display screen 12, a middle frame assembly 13, and a rear shell 14. The rear shell 14 and the display screen 12 are respectively located on both sides of the middle frame assembly 13, and the middle frame assembly 13 and the display screen 12 are arranged in the rear shell 14. The cover 11 is arranged on a side of the display screen 12 away from the middle frame assembly 13, and the display surface of the display screen 12 faces the cover 11.

The embodiment of the present application does not limit the structures of the display screen 12 , the cover body 11 , and the rear shell 14 , and they can be configured according to the purpose of the foldable electronic device 01 .

Electronic components such as printed circuit boards (PCB), batteries, and cameras in the foldable electronic device 01 can be set on the middle frame assembly 13.

The middle frame assembly 13 includes a first middle frame 10, a second middle frame 20 and a hinge mechanism 30, and the first middle frame 10 and the second middle frame 20 are rotatably connected through the hinge mechanism 30. Therefore, the angle between the first middle frame 10 and the second middle frame 20 can be increased or decreased under the action of the hinge mechanism 30.

The embodiment of the present application does not limit the folding method of the foldable electronic device 01. For example, the foldable electronic device 01 can be folded inward or outward.

Inward folding means that after the foldable electronic device 01 is fully folded, the display screen 12 is located on the inner side of the foldable electronic device 01 .

Outward folding means that after the foldable electronic device 01 is fully folded, the display screen 12 is located on the outside of the foldable electronic device 01 .

FIG2b is a schematic diagram of the structure of a foldable electronic device 01 provided in an embodiment of the present application. In FIG2b, after the hinge mechanism 30 rotates in the positive direction A, the angle between the first middle frame 10 and the second middle frame 20 decreases, and the foldable electronic device 01 is folded. After the foldable electronic device 01 is fully folded, the display screen 12 is located on the inner side of the foldable electronic device 01, and the two ends of the display screen 12 are attached to each other. After the hinge mechanism 30 rotates in the reverse direction B, the angle between the first middle frame 10 and the second middle frame 20 increases, and the foldable electronic device 01 is unfolded.

FIG2c is a schematic diagram of the structure of another foldable electronic device 01 provided in an embodiment of the present application. In FIG2c, after the hinge mechanism 30 rotates in the positive direction A, the angle between the first middle frame 10 and the second middle frame 20 decreases, and the foldable electronic device 01 is folded. After the foldable electronic device 01 is fully folded, the display screen 12 is located on the outside of the foldable electronic device 01, and the two ends of the rear shell 14 are attached to each other. After the hinge mechanism 30 rotates in the reverse direction B, the angle between the first middle frame 10 and the second middle frame 20 increases, and the foldable electronic device 01 is unfolded.

In the examples of Figure 2b and Figure 2c, the positive direction A is clockwise, and the reverse direction B is counterclockwise. It can be understood that in other embodiments of the present application, the positive direction A can be counterclockwise, and the reverse direction B can be clockwise, and the present application does not limit this.

When the foldable electronic device 01 falls to the ground, under the force of the ground on the foldable electronic device 01, the foldable electronic device 01 has a tendency to move to a folded state or an unfolded state. When the foldable electronic device 01 has a tendency to move to a folded state, under the action of inertia, the hinge mechanism 30 rotates in the positive direction A and reduces the angle between the first middle frame 10 and the second middle frame 20. In this way, the hinge mechanism 30 will collide with the ground, and the collision may cause the hinge mechanism 30 to be damaged or deformed, and then cause the display screen 12 to be damaged or deformed, affecting the service life. In particular, when the angle between the first middle frame 10 and the second middle frame 20 is large, the hinge mechanism 30 is most damaged after being collided.

The hinge mechanism 30 provided in the embodiment of the present application restrains the foldable electronic device 01 from continuing to fold after one side of the foldable electronic device 01 touches the ground, thereby alleviating damage to the hinge mechanism 30 after the foldable electronic device 01 falls, and reducing the impact of the fall on the display screen 12.

When the rotation speed of the rotating shaft mechanism 30 provided in the embodiment of the present application along the positive direction A is relatively high, the rotating shaft mechanism 30 stops rotating, and the angle between the first middle frame 10 and the second middle frame 20 stops decreasing.

FIG3 is a schematic diagram of the structure of the rotating shaft mechanism 30 provided in the embodiment of the present application. Please refer to FIG3 . The rotating shaft mechanism 30 includes a rotating shaft 100 and a locking assembly 200. The rotating shaft 100 and the locking assembly 200 are connected. When the rotating shaft mechanism 30 rotates at a high speed in the forward direction A, the locking assembly 200 locks the rotating shaft 100 so that the rotating shaft 100 no longer rotates. When the rotating shaft mechanism 30 rotates in the reverse direction B, the locking assembly 200 does not lock the rotating shaft 100. Since the foldable electronic device 01 is unfolded after the rotating shaft mechanism 30 rotates in the reverse direction B, the damage to the rotating shaft 100 caused by the second landing of the foldable electronic device 01 is small when the foldable electronic device 01 is unfolded, and therefore, it is not necessary to lock it.

In FIG. 3 , the rotating shaft mechanism 30 further includes a driving shaft 110 and a gear pair 120 , and the driving shaft 110 and the rotating shaft 100 are connected via the gear pair 120 .

Therefore, the effect of the locking assembly 200 connected to the rotating shaft 100 on the rotating shaft 100 will be transmitted to the driving shaft 110 through the gear pair 120, and the locking assembly 200 can simultaneously control the rotation of the rotating shaft 100 and the driving shaft 110.

In FIG. 3 , the rotating shaft 100 is a driven shaft. It can be understood that in other embodiments, the rotating shaft 100 can be a driving shaft.

In Fig. 3, the locking assembly 200 is connected to the rotating shaft 100. The locking assembly 200 and the rotating shaft 100 rotate in the same direction, and the locking assembly 200 and the rotating shaft 100 rotate in opposite directions.

It is understandable that in other embodiments, the locking assembly 200 may be connected to the driving shaft 110. The direction of rotation of the shaft locked by the locking assembly 200 is selected according to the relationship between the angle change of the foldable electronic device 01 and the rotation direction of the driving shaft 110 or the rotating shaft 100.

For example, when the locking assembly 200 is connected to the rotating shaft 100, the rotating shaft 100 rotates in the positive direction A, and the foldable electronic device 01 is folded. After the rotating shaft 100 rotates in the positive direction A to a preset speed, it can be locked by the locking assembly 200. When the foldable electronic device 01 is folded, the driving shaft 110 rotates in the reverse direction B. If the locking assembly 200 is connected to the driving shaft 110, after the rotating shaft 110 rotates in the reverse direction B to a preset speed, the locking assembly 200 locks it.

In FIG. 3 , the rotating shaft mechanism 30 further includes a connecting rod 130 , and the driving shaft 110 , the locking assembly 200 , and the rotating shaft 100 are all rotatably connected to the connecting rod 130 .

The embodiment of the present application does not limit the number of locking assemblies 200. For example, there may be multiple locking assemblies 200, each of which is connected to a different rotating shaft 100. The rotation of the locking rotating shaft 100 requires overcoming the torque of the rotating shaft 100. Multiple locking assemblies 200 can overcome the torque together, and each locking assembly 200 receives a smaller reaction force, which reduces the strength required for each locking assembly 200 and reduces the wear of the locking assembly 200.

Alternatively, the number of the locking assembly 200 may be one, which can reduce the volume of the rotating shaft mechanism 30 .

Fig. 4a is a schematic diagram of the structure of a locking assembly 200 provided in an embodiment of the present application. In Fig. 4a, the locking assembly 200 includes a rotating wheel 210, a first locking portion 220, a locking plate 230 and a second locking portion 240.

The rotating wheel 210 is connected to the rotating shaft 100 , the first locking portion 220 is connected to the outer peripheral wall of the rotating wheel 210 , the locking plate 230 is sleeved outside the rotating wheel 210 , and the second locking portion 240 is connected to the inner peripheral wall of the locking plate 230 .

When the rotation speed of the rotating shaft 100 in the positive direction A reaches a preset rotation speed, the first locking portion 220 moves close to the second locking portion 240 and engages with the second locking portion 240. When the first locking portion 220 and the second locking portion 240 are in an engaged state and the rotating shaft 100 rotates in the reverse direction B, the first locking portion 220 and the second locking portion 240 are separated.

The positive direction A means that the foldable electronic device 01 is folded after the rotating shaft 100 rotates in this direction, and the reverse direction B means that the foldable electronic device 01 is unfolded after the rotating shaft 100 rotates in this direction.

For example, when the rotation speed of the rotating shaft 100 in the positive direction A is less than the preset rotation speed, the centrifugal force of the first locking part 220 is small, and the first locking part 220 and the second locking part 240 are in a separated state. When the rotation speed in the positive direction A increases, the centrifugal force of the first locking part 220 increases, and the first locking part 220 moves closer to the second locking part 240 until the first locking part 220 and the second locking part 240 contact and engage, and the rotating shaft 100 no longer rotates under the action of the locking disk 230. When the rotating shaft 100 rotates in the reverse direction B, the first locking part 220 and the second locking part 240 are in a separated state.

In normal use, when the rotating shaft 100 rotates in the positive direction A, the first locking part 220 and the second locking part 240 are in a separated state, and the locking assembly 200 does not lock the rotating shaft 100. When the foldable electronic device 01 falls and lands on the ground, and the foldable electronic device 01 has a tendency to fold under the reaction force of the ground, the rotating shaft 100 increases its speed in the positive direction A to a preset speed under the action of inertia, and the centrifugal force of the first locking part 220 connected to the rotating wheel 210 increases, so that the first locking part 220 moves close to the second locking part 240 and engages with the second locking part 240, preventing the rotating shaft 100 from continuing to rotate, and preventing the foldable electronic device 01 from continuing to fold. When the rotating shaft 100 lands on the ground, the rotating shaft 100 is less damaged, and the degree of damage to the display screen 12 is reduced, which is conducive to improving the service life of the foldable electronic device 01.

When the foldable electronic device 01 has a tendency to unfold under the reaction force of the ground, the shaft 100 rotates in the reverse direction B to a preset speed under the action of inertia, and the shaft 100 is not locked. The unfolding angle of the foldable electronic device 01 is larger, and the damage to the shaft 100 after the shaft 100 lands for the second time is relatively small.

The embodiment of the present application does not limit the size of the preset rotation speed, and it can be set according to needs.

The embodiment of the present application does not limit the number of the first locking portion 220 and the second locking portion 240. In some embodiments, there are multiple second locking portions 240, and the multiple second locking portions 240 are spaced apart along the inner circumferential wall of the locking plate 230. Thus, the first locking portion 220 can be engaged with any second locking portion 240 to prevent the rotation of the rotating shaft 100. When the rotation speed of the rotating shaft 100 in the forward direction reaches a preset rotation speed, it can be quickly locked, reducing the time required for locking and increasing the corresponding speed of the locking assembly 200.

The embodiment of the present application does not limit the shapes of the first locking portion 220 and the second locking portion 240. For example, the first locking portion 220 and the second locking portion 240 may be tooth structures that can mesh with each other. When the first locking portion 220 and the second locking portion 240 are in a clamping state, a force in the positive direction A cannot separate them, and a force in the reverse direction B can separate the first locking portion 220 and the second locking portion 240.

The embodiment of the present application does not limit the shape of the locking disk 230. For example, the locking disk 230 may be a circular ring structure. Alternatively, the outer periphery of the locking disk 230 may be other irregular shapes.

Please refer to Fig. 3 again. The embodiment of the present application does not limit the connection method between the locking plate 230 and the connecting rod 130. For example, the locking plate 230 and the connecting rod 130 can be fixedly connected, welded or clamped.

The embodiment of the present application does not limit the shape of the rotating wheel 210. For example, the rotating wheel 210 may be a circular ring structure, or, in order to reduce the mass of the rotating wheel 210, the rotating wheel 210 may be an irregular shape, and during the normal rotation of the rotating shaft 100, the rotating wheel 210 does not contact the second locking portion 240.

In the embodiment of the present application, there are many ways to realize the first locking portion 220 moving close to the second locking portion 240 and engaging with the second locking portion 240, and the first locking portion 220 and the second locking portion 240 are separated, and the embodiment of the present application does not limit this.

For example, in some embodiments, the first locking portion 220 is fixedly connected to the rotating wheel 210, and when the rotation speed of the rotating shaft 100 along the positive direction A reaches a preset rotation speed, the first locking portion 220 and the rotating wheel 210 move away from the center of the rotating shaft 100 so that the first locking portion 220 moves close to the second locking portion 240 and engages with the second locking portion 240. Alternatively, in other embodiments, the first locking portion 220 is movably connected to the rotating wheel 210, and when the rotating shaft 100 rotates along the positive direction A, the first locking portion 220 moves away from the rotating wheel 210 and close to the second locking portion 240 and engages with the second locking portion 240.

The embodiment of the present application does not limit the material of the locking assembly 200. For example, in order to reduce the weight of the locking assembly 200 while improving the mechanical strength of the locking assembly 200 and reducing its wear, the material of the locking assembly 200 may be carbon fiber. It is understandable that in other embodiments of the present application, the locking assembly 200 may also be other materials.

The following describes various structures for realizing the separation and engagement of the first locking portion 220 and the second locking portion 240 as examples.

Example 1

As shown in Fig. 4a, the rotating wheel 210 includes a wheel disc 211 and an elastic member 212. The wheel disc 211 is used to be fixedly connected to the rotating shaft 100. One end of the first locking portion 220 is rotatably connected to the wheel disc 211, and the other end of the first locking portion 220 is elastically connected to the wheel disc 211 through the elastic member 212.

When the rotation speed of the rotating shaft 100 in the positive direction A reaches a preset rotation speed, one end of the first locking portion 220 rotates relative to the wheel disc 211, and the end of the first locking portion 220 away from the wheel disc 211 moves close to the second locking portion 240 and engages with the second locking portion 240. During this process, the elastic member 212 stores elastic potential energy that can move the first locking portion 220 away from the second locking portion 240. When the first locking portion 220 and the second locking portion 240 are in an engaged state and the rotating shaft 100 rotates in the reverse direction B, the elastic potential energy of the elastic member 212 causes the first locking portion 220 to separate from the second locking portion 240.

The elastic connection mentioned above includes that the elastic member 212 is fixedly connected to the wheel disc 211 , or the elastic member 212 is in contact with the wheel disc 211 but not connected thereto, and the elastic member 212 can apply elastic force to the wheel disc 211 .

The elastic connection mentioned above means that the first locking portion 220 can move closer to or away from the wheel disc 211 under the elastic force of the elastic member 212 .

In FIG. 4 a , the first locking portion 220 and the second locking portion 240 are in a separated state. In this state, the rotation axis 100 will not be locked when rotating in the forward direction A or the reverse direction B, and the foldable electronic device 01 can be folded or unfolded.

Figure 4b is a structural schematic diagram of the locking assembly 200 in Figure 4a in a locked state. In Figure 4b, the first locking portion 220 and the second locking portion 240 are in a separated state. In this state, the rotating shaft 100 is locked and cannot continue to rotate in the forward direction A, but can rotate in the reverse direction B.

Please refer to FIG. 4b , when the rotating shaft 100 rotates in the positive direction A, the wheel disc 211, the first locking portion 220 and the elastic member 212 rotate synchronously. The first locking portion 220 simultaneously bears the pulling force of the elastic member 212 and the centrifugal force exerted on it by the rotating shaft 100. When the rotating speed of the rotating shaft 100 in the positive direction A reaches a preset rotating speed, the centrifugal force exerted on the first locking portion 220 increases, and the centrifugal force is greater than the elastic force of the elastic member 212, causing the end of the first locking portion 220 to move away from the wheel disc 211.

When the rotation speed of the rotating shaft 100 along the positive direction A reaches the preset rotation speed, the distance between the end of the first locking part 220 and the wheel 211 reaches the preset distance L1, so that the first locking part 220 is engaged with the second locking part 240, the rotating shaft 100 is locked, and the foldable electronic device 01 cannot continue to fold.

The movement of the first locking portion 220 toward the second locking portion 240 means that the movement radius of the first locking portion 220 gradually increases, so that the distance between the movement trajectory of the first locking portion 220 and the second locking portion 240 is shortened until the first locking portion 220 and the second locking portion 240 are engaged.

The aforementioned preset rotation speed along the positive direction A can be set by detecting the rotation speed of the rotating shaft 100 in the free fall state, thereby adjusting parameters such as the mass of the first locking part 220, the diameter of the wheel 211, the elastic potential energy of the elastic part 212, etc. so that the rotating shaft 100 is locked after the rotation speed along the positive direction A reaches the preset rotation speed.

It is understandable that when the rotation speed of the shaft 100 in the positive direction A is less than the preset rotation speed, the shaft 100 is not locked, and the foldable electronic device 01 can be folded normally. Therefore, when the user folds the foldable electronic device 01 normally, the probability of the shaft 100 being locked is small, and normal use is not affected.

In Fig. 4b, the first locking portion 220 is engaged with the second locking portion 240, and the elastic member 212 is stretched. When the locking assembly 200 is in the state shown in Fig. 4b, after the rotating shaft 100 rotates in the reverse direction B, the first locking portion 220 is separated from the second locking portion 240, and under the elastic force of the elastic member 212, the first locking portion 220 is away from the second locking portion 240, and the first locking portion 220 is reset to the state shown in Fig. 4a.

Therefore, the foldable electronic device 01 provided in the embodiment of the present application will be locked after being quickly folded. After being locked, the user unfolds the foldable electronic device 01 to rotate the shaft 100 in the reverse direction B, and the foldable electronic device 01 can be unlocked and continued to be used, so that the foldable electronic device 01 can protect the shaft 100 from damage when it has a tendency to fold quickly, and normal folding and unfolding will not be affected.

When the locking assembly 200 is in the state shown in FIG. 4 a , the rotating shaft 100 can rotate in the forward direction A or the reverse direction B.

In Figure 4a, the engagement between the first locking portion 220 and the second locking portion 240 is directional, that is, the first locking portion 220 can be engaged with the second locking portion 240 only after rotating in the positive direction A, and the first locking portion 220 will not be engaged with the second locking portion 240 after rotating in the reverse direction B.

Figure 4c is a schematic diagram of a state of the foldable electronic device 01. For example, when the foldable electronic device 01 falls in the posture shown in Figure 4c, under the action of inertia, the shaft 100 rotates rapidly in the reverse direction B, the unfolding angle of the foldable electronic device 01 increases, and then it lands again. During the landing again, the shaft 100 is on the side of the foldable electronic device 01 away from the bottom surface, the shaft 100 is not in direct contact with the ground, and the shaft 100 is not easily damaged. Therefore, when the shaft 100 rotates rapidly in the reverse direction B, the locking assembly 200 may not lock it.

The embodiment of the present application does not limit the shape of the wheel disc 211. In FIG. 4a, the wheel disc 211 is roughly triangular. In other embodiments, the wheel disc 211 may be circular or other irregular shapes. During the rotation of the shaft 100, the motion trajectory of the wheel disc 211 does not overlap with the second locking portion 240.

The embodiment of the present application does not limit the connection method between the wheel disc 211 and the rotating shaft 100. For example, a non-circular hole is provided on the wheel disc 211, and the non-circular hole is engaged with the rotating shaft 100. Alternatively, meshing teeth are provided on the surface of the rotating shaft 100, and the wheel disc 211 is connected to the meshing teeth.

The embodiment of the present application does not limit the structure of the elastic member 212. For example, the elastic member 212 may be a spring, an elastic rubber strip, or a rubber sleeve.

The embodiment of the present application does not limit the manner in which the first locking portion 220 is rotationally connected to the wheel disc 211. For example, the first locking portion 220 is rotationally connected to the wheel disc 211 via a rotating pin, or the first locking portion 220 is rotationally connected to the wheel disc 211 via a hinge.

In FIG. 4a , the locking assembly 200 further includes a guide rod 213, and the elastic member 212 is sleeved outside the guide rod 213. One end of the guide rod 213 is slidably connected to the first locking portion 220, and the other end of the guide rod 213 is connected to the wheel disc 211. Thus, the guide rod 213 can constrain the path of compression or extension of the elastic member 212. When the first locking portion 220 approaches or moves away from the second locking portion 240 under the action of the elastic member 212, the guide rod 213 guides the first locking portion 220, so as to prevent the first locking portion 220 from deviating from the track during movement and failing to smoothly engage or separate from the second locking portion 240.

When the rotation speed of the rotating shaft 100 in the positive direction A reaches a preset rotation speed, the first locking portion 220 rotates relative to the wheel disc 211, and the end of the first locking portion 220 away from the wheel disc 211 slides relative to the guide rod 213, and the first locking portion 220 moves close to the second locking portion 240 and engages with the second locking portion 240. Similarly, in this process, the elastic member 212 stores elastic potential energy that can move the first locking portion 220 away from the second locking portion 240. When the rotating shaft 100 rotates in the reverse direction B, the elastic potential energy of the elastic member 212 causes the first locking portion 220 to slide relative to the guide rod 213 and separate from the second locking portion 240.

The guide rod 213 and the wheel disc 211 may be connected directly or indirectly.

FIG4d is a schematic diagram of the structure of the guide rod 213 and the elastic member 212 in FIG4a. Please refer to FIG4a and FIG4d together. The locking assembly 200 further includes a limiter 214. The limiter 214 is connected to the wheel disc 211, and the guide rod 213 passes through the limiter 214 and is slidably connected to the limiter 214. The opposite ends of the elastic member 212 are respectively connected to the guide rod 213 and the limiter 214. Alternatively, the opposite ends of the elastic member 212 are respectively connected to the limiter 214 and the first locking portion 220.

When the rotation speed of the rotating shaft 100 in the positive direction A reaches the preset rotation speed, the first locking part 220 rotates relative to the wheel disc 211, and the end of the first locking part 220 away from the wheel disc 211 and the guide rod 213 slide relative to the limiter 214, and the first locking part 220 moves close to the second locking part 240 and engages with the second locking part 240. Similarly, in this process, the elastic member 212 stores elastic potential energy that can move the first locking part 220 away from the second locking part 240. When the rotating shaft 100 rotates in the reverse direction B, the elastic potential energy of the elastic member 212 causes the first locking part 220 and the guide rod 213 to slide relative to the limiter 214, and the first locking part 220 is separated from the second locking part 240.

In this way, the guide rod 213 moves synchronously with the first locking portion 220. When the first locking portion 220 moves close to the second locking portion 240, the guide rod 213 slides relative to the limiting member 214, the elastic member 212 is stretched, and the guide rod 213 and the first locking portion 220 move away from the limiting member 214 together. When the first locking portion 220 moves away from the second locking portion 240, the elastic member 212 is reset, and the guide rod 213 and the first locking portion 220 approach the limiting member 214 together. The limiting member 214 can constrain the movement trajectory of the guide rod 213, so that the first locking portion 220 and the second locking portion 240 are smoothly engaged or reset.

The embodiment of the present application does not limit the connection method between the elastic member 212 and the guide rod 213. For example, a stopper is provided at one end of the guide rod 213, and both ends of the elastic member 212 are not directly connected to the guide rod 213. The stopper can prevent the elastic member 212 from falling off the guide rod 213. Alternatively, one end of the elastic member 212 is directly connected to the guide rod 213, and the other end is a free end.

The present application does not limit the manner in which the guide rod 213 is slidably connected to the first locking portion 220 . Please refer to FIG. 4 a and FIG. 4 d . A pin is disposed at the end of the guide rod 213 . The pin extends into the slide groove 104 of the first locking portion 220 . The pin is slidably connected to the slide groove 104 .

In FIG. 4 a , the slide groove 104 is a bar-shaped hole, and the extension direction of the slide groove 104 can be set according to the movement trajectory of the first locking portion 220 approaching the second locking portion 240 .

In the embodiment of the present application, the guide rod 213 and the stopper 214 are not necessary. The elastic member 212 and the wheel disc 211 may be connected without the guide rod 213 or the stopper 214 .

For example, FIG4e is a schematic diagram of a connection between the elastic member 212 and the wheel disc 211. In FIG4e, opposite ends of the elastic member 212 are respectively fixedly connected to the first locking portion 220 and the wheel disc 211. In this way, the first locking portion 220 can be moved closer to or farther from the second locking portion 240 under the combined action of the elastic member 212 and the centrifugal force, and the connection method in FIG4e can reduce the weight and volume of the locking assembly 200.

For example, FIG4f is another schematic diagram of the connection between the elastic member 212 and the wheel disc 211. In FIG4f, the elastic member 212 is connected to the wheel disc 211 via a guide rod 213. One end of the guide rod 213 is fixedly connected to the wheel disc 211, and the other end of the guide rod 213 is slidably connected to the first locking portion 220. In this way, the first locking portion 220 can be moved close to or away from the second locking portion 240, and the weight and volume of the locking assembly 200 can be reduced.

Please refer to FIG. 4a and FIG. 4f together. In FIG. 4a, the two opposite ends of the guide rod 213 are not directly connected to the wheel disc 211, and the entire guide rod 213 can move with the first locking portion 220. In FIG. 4f, one end of the guide rod 213 is fixedly connected to the wheel disc 211, and the other end can be slidably connected to the first locking portion 220.

The embodiment of the present application does not limit the shapes of the guide rod 213 and the limiter 214 , and they are arranged according to the movement trajectory of the first locking portion 220 .

4a again, the elastic member 212, the guide rod 213, and the stopper 214 are all connected to the radial surface of the wheel disc 211. It is understandable that in other embodiments, the elastic member 212, the guide rod 213, and the stopper 214 can all be connected to the outer peripheral wall of the wheel disc 211.

It is understandable that the structure for implementing the first locking portion 220 and the wheel disc 211 is not limited to the examples shown in FIG. 4 a , FIG. 4 e , and FIG. 4 f , and may be other structures, which is not limited in the embodiments of the present application.

Example 2

FIG5a is a schematic diagram of the structure of another locking assembly 200 provided in an embodiment of the present application. In the example of FIG5a, the first locking portion 220 is fixedly connected to the rotating wheel 210, and the rotating wheel 210 is used to be movably connected to the rotating shaft 100. When the rotation speed of the rotating shaft 100 increases along the positive direction A, the axis of the rotating shaft 100 deviates from the center of the rotating wheel 210, so that the first locking portion 220 is engaged with the second locking portion 240. When the rotating shaft 100 rotates along the reverse direction B, the axis of the rotating shaft 100 coincides with the center of the rotating wheel 210, so that the first locking portion 220 is separated from the second locking portion 240.

In FIG. 5 a , the axis m of the rotating shaft 100 coincides with the center n of the rotating wheel 210 , and the first locking portion 220 and the second locking portion 240 are in a separated state.

FIG5 b is a schematic structural diagram of the locking assembly 200 in FIG5 a in a locked state. In FIG5 b , the axis m of the rotating shaft 100 deviates from the center n of the rotating wheel 210 , and the first locking portion 220 is engaged with the second locking portion 240 .

The embodiment of the present application does not limit the shape of the wheel disc 211, which may be a regular structure such as a circular ring, a triangular ring, etc., or an irregular structure.

The center n of the rotating wheel 210 mentioned above is the center of the motion track of the rotating wheel 210 .

The axis m of the aforementioned rotating shaft 100 coincides with the center n of the rotating wheel 210, including: the center n and the axis m are collinear, and the distance between the center n and the axis m is less than or equal to the preset distance L2, which is the distance between the center n and the axis m when the first locking portion 220 and the second locking portion 240 are engaged.

In FIG. 5 b , the rotating wheel 210 includes a wheel disc 211 , a first limiting portion 201 and a second limiting portion 202 . The first limiting portion 201 and the second limiting portion 202 are spaced apart on the inner circumferential wall of the wheel disc 211 . The wheel disc 211 is fixedly connected to the first locking portion 220 .

The rotating shaft 100 abuts against the first limiting portion 201 or the second limiting portion 202 . In other words, the rotating shaft 100 does not abut against the first limiting portion 201 or the second limiting portion 202 at the same time.

When the rotating shaft 100 rotates in the positive direction A, the first limiter 201 abuts against the rotating shaft 100, and the rotating shaft 100 transmits power to the wheel disc 211 and the first locking portion 220 through the first limiter 201. The axis m of the rotating shaft 100 coincides with the center n of the rotating wheel 210, and the first locking portion 220, the rotating shaft 100 and the wheel disc 211 rotate synchronously. When the rotation speed of the rotating shaft 100 in the positive direction A suddenly increases, the wheel disc 211 and the first locking portion 220 continue to move in the tangential direction of the rotating shaft 100 under the action of inertia, the first limiter 201 separates from the rotating shaft 100, and the distance between the axis m of the rotating shaft 100 and the center n of the rotating wheel 210 increases.

If the rotation speed of the rotating shaft 100 along the positive direction A reaches the preset rotation speed, the interaction force between the first limit portion 201 and the rotating shaft 100 is relatively large, and the separation distance between the first limit portion 201 and the rotating shaft 100 increases until the distance between the axis m of the rotating shaft 100 and the center n of the rotating wheel 210 is L2, and the first locking portion 220 is engaged with the second locking portion 240.

After the first limiting portion 201 is separated from the rotating shaft 100, the rotating shaft 100 and the wheel disc 211 will move relative to each other for a short time until the second limiting portion 202 abuts against the rotating shaft 100. The second limiting portion 202 exerts a force on the rotating shaft 100, so that the rotating shaft 100 is locked.

As shown in FIG5b, after the first limiter 201 is separated from the rotating shaft 100, if the rotation speed of the rotating shaft 100 in the positive direction A is less than the preset rotation speed, the inertia of the first limiter 201 is not enough to make the distance between the axis m of the rotating shaft 100 and the center n of the rotating wheel 210 be L2, and the first locking portion 220 and the second locking portion 240 are still in a separated state. After the rotating shaft 100 continues to rotate, the rotating shaft 100 will contact the first limiter 201 again, and the rotating shaft 100 and the wheel 211 will continue to move synchronously. Therefore, when the rotation speed of the rotating shaft 100 in the positive direction A does not reach the preset rotation speed, the rotating shaft 100 will not be locked.

When the locking assembly 200 is in the locking state shown in FIG. 5 b , the rotating shaft 100 is rotated in the reverse direction B, and the rotating shaft 100 acts on the wheel 211 through the second limiting portion 202, so that the wheel 211 rotates in the reverse direction B, the first locking portion 220 is separated from the second locking portion 240, and the locking assembly 200 is in the state shown in FIG. 5 a .

When the locking assembly 200 is in the state shown in FIG. 5 a , the rotating shaft 100 can rotate in the forward direction A or the reverse direction B.

The embodiment of the present application does not limit the structures of the first locking portion 220 and the second locking portion 240 .

Exemplarily, the first locking portion 220 and the second locking portion 240 are teeth meshing with each other, and when the foldable electronic device 01 falls in the posture shown in FIG. 4c, the locking assembly 200 shown in FIG. 5a engages the first locking portion 220 and the second locking portion 240 under the action of inertia, and the shaft 100 is locked. Similarly, the first locking portion 220 and the second locking portion 240 can be separated after the shaft 100 rotates in the positive direction A.

Alternatively, in some embodiments, the first locking portion 220 and the second locking portion 240 adopt the structure shown in FIG. 4a , and when the foldable electronic device 01 falls in the posture shown in FIG. 4c , when the shaft 100 rotates faster in the reverse direction B, the locking assembly 200 does not lock it. This application does not limit this.

The embodiment of the present application does not limit the structure of the wheel disc 211 . The wheel disc 211 has an inner hole, and the first limiting portion 201 and the second limiting portion 202 are connected to the inner hole.

FIG5c is a schematic diagram of the structure of a wheel disc 211 provided in an embodiment of the present application. Please refer to FIG5c . The outer contour of the wheel disc 211 is circular, and the inner hole is irregularly shaped.

The embodiment of the present application does not limit the outer contour of the wheel disc 211. For example, the outer contour may be circular, or, in order to reduce weight, the outer contour may be irregular.

The embodiment of the present application does not limit the shape of the inner hole, for example, the inner hole is a circular hole, a strip hole or a special-shaped hole, etc. The inner hole is adapted to the shape of the rotating shaft 100, so that the rotating shaft 100 can slide relative to the inner hole, and the sliding angle of the rotating shaft 100 relative to the inner hole is less than 360°, so that the rotating shaft 100 can rotate synchronously with the wheel disc 211.

The embodiment of the present application does not limit the shapes of the first limiting portion 201 and the second limiting portion 202. For example, the first limiting portion 201 and the second limiting portion 202 are flanges, and the first limiting portion 201 and the second limiting portion 202 are protruding from the wall of the inner hole.

The embodiment of the present application does not limit the connection method between the wheel disc 211 and the first locking portion 220. For example, the wheel disc 211 and the first locking portion 220 are welded, or the wheel disc 211 and the first locking portion 220 are integrally formed.

As described above, the rotating shaft 100 abuts against the first limiting portion 201 or the second limiting portion 202. In the embodiment of the present application, the manner in which the rotating shaft 100 abuts against the first limiting portion 201 or the second limiting portion 202 is not limited.

FIG5 d is a schematic structural diagram of a rotating shaft 100 provided in an embodiment of the present application. Please refer to FIG5 a and FIG5 d . The rotating shaft 100 includes a special-shaped section 101 , and the wheel disc 211 is sleeved outside the special-shaped section 101 .

In FIG. 5 d , the special-shaped segment 101 is flat, and two opposite sides of the flat shape are used to abut against the first limiting portion 201 or the second limiting portion 202 respectively.

The special-shaped section 101 includes a first abutting portion 102 and a second abutting portion 103 . The first abutting portion 102 is used to abut against the first limiting portion 201 , and the second limiting portion 203 is used to abut against the second limiting portion 202 .

It is understandable that the aforementioned special-shaped segment 101 can be formed by cutting the rotating shaft 100, or by disposing a positioning piece with an outer contour identical to that of the special-shaped segment 101 outside the rotating shaft 100, which can be selected according to the size of the rotating shaft 100 and the size of the wheel disc 211.

In FIG. 5 a , the first limiting portion 201 and the second limiting portion 202 are both arc-shaped convex portions. In other embodiments, they may be other shapes, which is not limited in the embodiment of the present application.

In other embodiments of the present application, the rotating shaft 100 may be cylindrical, and the axis m of the rotating shaft 100 may deviate from or coincide with the center n of the rotating wheel 210 by other means.

FIG6a is a schematic structural diagram of another locking assembly 200 provided in an embodiment of the present application. In FIG6a , the rotating wheel 210 further includes a positioning member 215 , and the remaining structures in the rotating wheel 210 are the same as those in the example shown in FIG5a , and are not described again here.

The positioning member 215 is used to connect with the rotating shaft 100, and the positioning member 215 and the rotating shaft 100 can rotate synchronously. The positioning member 215 can optionally abut against the first limiting portion 201 or the second limiting portion 202. Exemplarily, when the rotating shaft 100 rotates in the positive direction A, the positioning member 215 abuts against the first limiting portion 201. When the rotating shaft 100 rotates in the reverse direction B, the limiting member 214 abuts against the second limiting portion 202.

Therefore, the rotating shaft 100 can be in a cylindrical shape or the like, and the rotating shaft 100 may not be cut, and the locking assembly 200 can be applied to more rotating shafts 100. It is understandable that the rotating shaft 100 can also be in other shapes.

The embodiment of the present application does not limit the connection mode between the positioning member 215 and the rotating shaft 100. For example, the positioning member 215 and the rotating shaft 100 are clamped or fixedly connected. Alternatively, in some embodiments, the positioning member 215 and the rotating shaft 100 are integrally formed.

The embodiment of the present application does not limit the shape of the positioning member 215 .

It can be understood that the special-shaped segment 101 in FIG. 5 a can be regarded as the shape of the square positioning member 215 and the rotating shaft 100 formed in one piece.

FIG6 b is a schematic diagram of the structure of the positioning member 215 and the rotating shaft 100 . In FIG6 b , the positioning member 215 is an open-loop structure, which is sleeved outside the rotating shaft 100 and is engaged with the rotating shaft 100 .

The aforementioned open-loop structure means that along the circumference of the rotating shaft 100 , the head and tail of the positioning member 215 are not connected.

The two opposite ends of the open loop structure are respectively used to abut against the first limit portion 201 or the second limit portion 202. For example, when the shaft 100 rotates in the forward direction A, one end of the open loop structure abuts against the first limit portion 201, and when the shaft 100 rotates in the reverse direction B, the other end of the open loop structure abuts against the second limit portion 202.

The embodiment of the present application does not limit the arc length of the open-loop structure and can be set according to requirements.

The positioning member 215 provided in the embodiment of the present application is not limited to the open-loop structure in FIG. 6 b , and may be other structures.

Figure 6c is a structural diagram of the locking state of the locking assembly 200 in Figure 6a. Please refer to Figure 6c and Figure 6a together. When the locking assembly 200 is in the state shown in Figure 6a, the axis m of the rotating shaft 100 coincides with the center n of the rotating wheel 210, the first locking portion 220 is separated from the second locking portion 240, and the rotating shaft 100 can rotate in the positive direction A or direction B.

When the locking assembly 200 is in the state shown in FIG. 6c , the axis m of the rotating shaft 100 deviates from the center n of the rotating wheel 210, and the distance between the axis m of the rotating shaft 100 and the center n of the rotating wheel 210 is L1, the first locking portion 220 is engaged with the second locking portion 240, and the rotating shaft 100 cannot continue to rotate in the positive direction A. After the rotating shaft 100 rotates in the reverse direction B, the first locking portion 220 is separated from the second locking portion 240, specifically away from the locking assembly 200 shown in FIG. 5a , which will not be described in detail here.

Similarly, after the foldable electronic device 01 including the locking assembly 200 shown in Figure 6a falls, the locking assembly 200 can lock the rotating shaft 100 so that it cannot continue to rotate in the positive direction A, thereby protecting the rotating shaft 100, reducing damage to the rotating shaft 100 and the display screen 12, and extending the service life of the foldable electronic device 01.

When the rotation speed of the rotating shaft 100 in the forward direction is too fast, the locking assembly 200 provided in the embodiment of the present application can activate the self-locking mechanism to prevent the rotating shaft 100 from continuing to rotate.

Obviously, after the foldable electronic device 01 including the aforementioned locking component 200 collides with the outside world with a large force (for example, falls to the ground), and the posture during the collision causes it to have the inertia to fold further, the locking component 200 activates the self-locking function to prevent the foldable electronic device 01 from continuing to fold, which can reduce the damage to the hinge 100 caused by the secondary collision, thereby improving the problem of damage to the display screen 12 caused by damage to the hinge 100, and extending the service life of the foldable electronic device 01.

The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims (12)

1. A locking assembly, characterized in that the locking assembly is used to connect with the rotating shaft of a foldable electronic device, and comprises: A rotating wheel, the rotating wheel is used to be connected to the rotating shaft; a first locking portion, the first locking portion being connected to an outer peripheral wall of the rotating wheel; A locking plate, wherein the locking plate is sleeved outside the rotating wheel; and a second locking portion, the second locking portion being connected to the inner peripheral wall of the locking plate; When the rotation speed of the rotating shaft in the forward direction reaches a preset rotation speed, the first locking portion moves close to the second locking portion and engages with the second locking portion; When the first locking portion and the second locking portion are in a clamping state and the rotating shaft rotates in a reverse direction, the first locking portion is separated from the second locking portion. 2. The locking assembly according to claim 1, characterized in that the rotating wheel comprises: a wheel disc and an elastic member, the wheel disc is used to be fixedly connected to the rotating shaft; one end of the first locking portion is rotatably connected to the wheel disc, and the other end of the first locking portion is elastically connected to the wheel disc through the elastic member; When the rotation speed of the rotating shaft in the forward direction reaches a preset rotation speed, the first locking portion rotates relative to the wheel disc so that one end of the first locking portion moves close to the second locking portion and is engaged with the second locking portion; When the first locking portion and the second locking portion are in a clamping state and the rotating shaft rotates in the reverse direction, the elastic member separates the first locking portion from the second locking portion. 3. The locking assembly according to claim 2, characterized in that the rotating wheel further comprises: a guide rod; the elastic member is sleeved outside the guide rod, one end of the guide rod is slidably connected to the first locking portion, and the other end of the guide rod is connected to the wheel disc; When the rotation speed of the rotating shaft in the forward direction reaches a preset rotation speed, the first locking portion slides relative to the guide rod so that one end of the first locking portion approaches the second locking portion and is engaged with the second locking portion; When the first locking portion and the second locking portion are in a clamping state and the rotating shaft rotates in the reverse direction, the elastic member causes the first locking portion to slide relative to the guide rod and separate from the second locking portion. 4. The locking assembly according to claim 2, characterized in that the rotating wheel further comprises: a guide rod and a limiter, the limiter is connected to the wheel disc, the elastic member is sleeved outside the guide rod, the guide rod is slidably connected to the first locking portion; the guide rod passes through the limiter and is slidably connected to the limiter; The two opposite ends of the elastic member are elastically connected to the guide rod and the limit member respectively; or the two opposite ends of the elastic member are elastically connected to the limit member and the first locking portion respectively; When the rotation speed of the rotating shaft in the forward direction reaches a preset rotation speed, the first locking portion and the guide rod slide together relative to the limiter so that one end of the first locking portion approaches the second locking portion and is engaged with the second locking portion; When the first locking portion and the second locking portion are in a clamping state and the rotating shaft rotates in the reverse direction, the elastic member causes the first locking portion and the guide rod to slide relative to the limiting member and away from the second locking portion. 5. The locking assembly according to claim 1, characterized in that the first locking portion is fixedly connected to the rotating wheel; the rotating wheel is used to be movably connected to the rotating shaft; When the rotation speed of the rotating shaft in the positive direction reaches a preset rotation speed, the axis of the rotating shaft deviates from the center of the rotating wheel so that the first locking portion is engaged with the second locking portion; When the first locking portion and the second locking portion are in a clamping state and the rotating shaft rotates in the reverse direction, the axis of the rotating shaft coincides with the center of the rotating wheel to separate the first locking portion from the second locking portion. 6. The locking assembly according to claim 5, characterized in that the rotating wheel comprises a wheel disc, a first limiting portion, a second limiting portion and a positioning member, the wheel disc is sleeved outside the positioning member, the first limiting portion and the second limiting portion are spaced apart and distributed on the inner peripheral wall of the wheel disc, and the first locking portion is connected to the outer peripheral wall of the wheel disc; The positioning member is used to be connected to the rotating shaft, and the first limiting portion or the second limiting portion abuts against the positioning member; When the first limiting portion abuts against the positioning member and the rotation speed of the rotating shaft in the positive direction reaches a preset rotation speed, the axis of the rotating shaft deviates from the center of the rotating wheel; When the second limiting portion abuts against the positioning member and the rotating shaft rotates in the reverse direction, the axis of the rotating shaft coincides with the center of the rotating wheel. 7 . The locking assembly according to claim 6 , wherein the positioning member is an open-loop structure, and two opposite ends of the open-loop structure are respectively used to abut against the first limiting portion or the second limiting portion. 8. The locking assembly according to any one of claims 1 to 7, characterized in that the number of the second locking portions is multiple, and the multiple second locking portions are distributed along the inner circumferential wall of the locking plate at intervals. 9. A rotating shaft mechanism, characterized in that the rotating shaft mechanism comprises: a rotating shaft and a locking assembly according to any one of claims 1 to 8, wherein the rotating shaft is connected to the rotating wheel. 10 . The rotating shaft mechanism according to claim 9 , characterized in that the rotating shaft mechanism further comprises: a driving shaft and a gear pair, and the driving shaft is connected to the rotating shaft through the gear pair. 11. A foldable electronic device, characterized in that the foldable electronic device comprises: a first middle frame, a second middle frame and the hinge mechanism according to claim 9 or 10, and the first middle frame and the second middle frame are rotatably connected through the hinge mechanism. 12. The foldable electronic device according to claim 11, characterized in that when the rotating shaft rotates in the opposite direction, the angle between the plane where the first middle frame is located and the plane where the second middle frame is located increases, so that the foldable electronic device is unfolded.