CN117948343A - Locking assembly, rotating shaft mechanism and foldable electronic equipment - Google Patents

Abstract

The embodiment of the application discloses a locking assembly, a rotating shaft mechanism and foldable electronic equipment, relates to the field of foldable equipment, and aims to solve the problem of short service life of the foldable electronic equipment. The specific scheme is as follows: the locking assembly comprises a first locking part and a second locking part, and is connected with the rotating shaft; when the rotating shaft reaches a preset rotating speed along the positive rotating speed, the first locking part is clamped 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 speed of the rotating shaft reaches a preset speed, the first locking part overcomes the elasticity of the elastic piece and is clamped with the second locking part, or the first locking part deviates from the center of the rotating shaft and is clamped with the second locking part to realize the self-locking function. When the foldable electronic equipment falls to the ground, the self-locking function is started, so that the damage to the rotating shaft caused by secondary grounding is reduced.

Description

Locking assembly, rotating shaft mechanism and foldable electronic equipment

Technical Field

The embodiment of the application relates to the field of foldable equipment, in particular to a locking assembly, a rotating shaft mechanism and foldable electronic equipment.

Background

As the portability requirements of electronic devices have increased by users, foldable electronic devices have become of great interest. Such as notebooks, foldable handsets, etc. The mechanical reliability of a foldable electronic device has a large impact on its lifetime.

Fig. 1a is a schematic structural view of an end of a foldable electronic device 001 just landed, and fig. 1b is a schematic structural view of the foldable electronic device 001 after landing, and as can be seen from fig. 1a and 1b, after landing, the foldable electronic device 001 changes from an unfolded state to a folded state or a semi-folded state due to the rotation of the rotating shaft 002 under the action of the force of the rotating shaft 002 on the foldable electronic device 001 due to inertia. And the spindle 002 is impacted by the secondary drop. The rotating shaft 002 may be damaged and deformed, which results in redundant size of the screen 003 and even black spots of the screen 003.

The damage to the rotating shaft after the foldable electronic equipment falls is reduced, and the mechanical reliability of the foldable electronic equipment is improved.

Currently, some foldable electronic devices control the movement of a rotating shaft through an acceleration sensor and a solenoid valve. For example, the acceleration sensor judges whether the equipment is weightless, and when the acceleration sensor judges that the equipment is weightless, the electromagnetic valve controls the rotating shaft to be locked. However, when the electronic equipment is powered off or shut down, the acceleration sensor and the electromagnetic valve do not work, and the protection mechanism can be lost.

Disclosure of Invention

The embodiment of the application provides a locking assembly, a rotating shaft mechanism and foldable electronic equipment, which can improve the damage to a rotating shaft after the foldable electronic equipment falls down.

In order to achieve the above purpose, the application adopts the following technical scheme:

In a first aspect, a locking assembly is provided, the locking assembly is used for being connected with a rotating shaft of a foldable electronic device, the locking assembly comprises a rotating wheel, a first locking part, a locking disc and a second locking part, and the rotating wheel is used for being connected with the rotating shaft; the first locking part is connected with the peripheral wall of the rotating wheel; the locking disc is sleeved outside the rotating wheel; the second locking part is connected with the inner peripheral wall of the locking disc; when the rotating shaft reaches a preset rotating speed along the positive rotating speed, the first locking part moves close to the second locking part and is clamped with the second locking part; when the first locking part and the second locking part are in a clamping state and the rotating shaft rotates in the reverse direction, the first locking part and the second locking part are separated. Therefore, after the foldable electronic equipment falls to the ground, and the foldable electronic equipment has a folding trend under the reaction force of the ground, the first locking part is clamped with the second locking part, the rotating shaft is restrained from continuing to rotate, the foldable electronic equipment is restrained from continuing to fold, the damage of the rotating shaft is small when the rotating shaft is grounded, the damage degree of the display screen is reduced, and the service life of the foldable electronic equipment is prolonged. When the foldable electronic equipment has unfolding trend under the reaction force of the ground, the rotating shaft reversely rotates under the action of inertia, the rotating shaft is not locked, the unfolding angle of the foldable electronic equipment is larger, and the damage to the rotating shaft after the rotating shaft is secondarily landed is smaller. When the rotating shaft is locked, the rotating shaft can be unlocked by reversely rotating the rotating shaft, so that the locking assembly can protect the damage of the rotating shaft and the display screen after the foldable electronic equipment falls.

With reference to the first aspect, in some realizable forms, the rotating wheel includes: the wheel disc is used for being fixedly connected with the rotating shaft; one end of the first locking part is rotationally connected with the wheel disc, and the other end of the first locking part is elastically connected with the wheel disc through the elastic piece. When the rotating shaft reaches a preset rotating speed along the positive rotating speed, the first locking part rotates relative to the wheel disc, so that one end of the first locking part moves close to the second locking part and is clamped with the second locking part; when the first locking part and the second locking part are in a clamping state and the rotating shaft rotates in the reverse direction, the elastic piece enables the first locking part and the second locking part to be separated. Therefore, the elastic piece can enable the first locking part to be close to or far away from the second locking part, and separation and clamping connection of the first locking part and the second locking part are achieved.

With reference to the first aspect, in some realizable modes, the rotating wheel further includes: a guide rod; the elastic piece is sleeved outside the guide rod, the guide rod is connected with the first locking part in a sliding way, and one end of the guide rod is connected with the wheel disc. When the rotating shaft reaches a preset rotating speed along the positive rotating speed, the first locking part slides relative to the guide rod to enable one end of the first locking part to be close to the second locking part and to be clamped with the second locking part; when the first locking part and the second locking part are in a clamping state and the rotating shaft rotates in the opposite direction, the elastic piece enables the first locking part to slide relative to the guide rod and separate from the second locking part. Therefore, the guide rod guides the first locking part, and the phenomenon that the first locking part deviates from a track in the moving process and cannot be smoothly clamped with or separated from the second locking part is avoided.

With reference to the first aspect, in some realizable modes, the rotating wheel further includes: the elastic piece is sleeved outside the guide rod, the guide rod is in sliding connection with the first locking part, and the guide rod penetrates through the limiting piece and is in sliding connection with the limiting piece; opposite ends of the elastic piece are respectively and elastically connected with the guide rod and the limiting piece; or two opposite ends of the elastic piece are respectively and elastically connected with the limiting piece and the first locking part. When the rotating shaft reaches a preset rotating speed along the positive rotating speed, the first locking part and the guide rod slide together relative to the limiting part so that one end of the first locking part is close to the second locking part and is clamped with the second locking part; when the first locking part and the second locking part are in a clamping state and the rotating shaft rotates in the reverse direction, the elastic piece enables the first locking part and the guide rod to slide together relative to the limiting piece and to be far away from the second locking part. Therefore, the limiting piece can restrict the movement track of the guide rod, so that the first locking part and the second locking part are smoothly clamped or reset.

With reference to the first aspect, in some realizable manners, the first locking portion is fixedly connected with the rotating wheel; the rotating wheel is used for being movably connected with the rotating shaft; when the rotating shaft reaches a preset rotating speed along the positive rotating speed, the axis of the rotating shaft deviates from the center of the rotating wheel so that the first locking part is clamped with the second locking part; when the first locking part and the second locking part are in a clamping state and the rotating shaft rotates in the opposite direction, the axis of the rotating shaft coincides with the center of the rotating wheel, so that the first locking part and the second locking part are separated. Therefore, the rotating shaft is locked when the forward speed is too high, the foldable electronic equipment cannot be folded continuously, and the damage to the rotating shaft after the foldable electronic equipment falls down is small.

With reference to the first aspect, in some realizable modes, the rotating wheel includes a wheel disc, a first limiting portion, a second limiting portion and a positioning piece, the wheel disc is sleeved outside the positioning piece, the first limiting portion and the second limiting portion are distributed on the inner peripheral wall of the wheel disc at intervals, and the first locking portion is connected with the outer peripheral wall of the wheel disc; the positioning piece is used for being connected with the rotating shaft, and the first limiting part or the second limiting part is abutted with the positioning piece; when the first limiting part is abutted with the positioning piece and the rotating speed of the rotating shaft in the forward direction reaches a preset rotating speed, the axis of the rotating shaft deviates from the center of the rotating wheel; when the second limiting part is abutted with the positioning piece and the rotating shaft rotates in the reverse direction, the axis of the rotating shaft coincides with the center of the rotating wheel. Therefore, the interaction force between the first limiting part or the second limiting part and the rotating shaft enables the rotating shaft and the wheel disc to rotate synchronously, and after the interaction force increases suddenly, the first locking part and the second locking part are clamped with the locking rotating shaft.

With reference to the first aspect, in some realizable manners, the positioning piece is an open loop structure, and two opposite ends of the open loop structure are respectively used for abutting against the first limiting portion or the second limiting portion. The open-loop structure and the rotating shaft can synchronously rotate, the open-loop structure is suitable for the cylindrical rotating shaft, the standard rotating shaft can not be additionally processed, and the applicability is wide.

With reference to the first aspect, in some realizable modes, the rotating shaft includes a special-shaped section, and the special-shaped section includes a first abutting portion and a second abutting portion; the rotating wheel comprises a wheel disc, a first limiting part and a second limiting part, the first limiting part and the second limiting part are distributed on the inner peripheral wall of the wheel disc at intervals, and the first locking part is connected with the outer peripheral wall of the wheel disc;

The first abutting part is used for abutting against the first limiting part of the rotating wheel, and the second abutting part is used for abutting against the second limiting part of the rotating wheel; when the first limiting part is abutted with the first abutting part and the rotating shaft reaches a preset rotating speed along the positive rotating speed, the axis of the rotating shaft deviates from the center of the rotating wheel; when the second limiting part is abutted with the second abutting part and the rotating shaft rotates in the reverse direction, the axis of the rotating shaft coincides with the center of the rotating wheel. Therefore, the interaction of the first abutting part and the first limiting part can enable the special-shaped section and the wheel disc to synchronously rotate or the special-shaped section is locked, so that the foldable electronic equipment is prevented from being further folded.

In a second aspect, there is provided a spindle mechanism comprising: a spindle coupled to the rotatable wheel and any one of the locking assemblies provided in the second aspect. Obviously, the rotating shaft mechanism has a self-locking function when the rotating speed is too high along the forward direction, so that the foldable electronic equipment can be prevented from being further folded.

With reference to the second aspect, in some realizable modes, the spindle mechanism further includes: the driving shaft is connected with the rotating shaft through the gear pair. From this, the moment of torsion of pivot can be through the gear pair transmission to the driving shaft, and locking mechanism can lock pivot and driving shaft simultaneously.

In a third aspect, there is provided a foldable electronic device, comprising: any one of the rotating shaft mechanisms provided by the first middle frame, the second middle frame and the second aspect, wherein the first middle frame and the second middle frame are rotationally connected through the rotating shaft mechanism. Therefore, the foldable electronic equipment can be locked when being folded rapidly, the foldable electronic equipment is prevented from being folded further, the rotating shaft mechanism is self-locked after the foldable electronic equipment falls to the ground, and damage to the rotating shaft and the display screen is reduced.

With reference to the third aspect, in some achievable manners, when the rotating shaft rotates reversely, an included angle between a plane in which the first middle frame and a plane in which the second middle frame are located increases, so that the foldable electronic device is unfolded. Therefore, when the foldable electronic equipment is folded rapidly, the rotating shaft is locked to be not folded any further, and damage to the rotating shaft is reduced.

Drawings

Fig. 1a is a schematic view of a structure of a foldable electronic device with one end just grounded.

Fig. 1b is a schematic structural diagram of the foldable electronic device after grounding.

Fig. 2a is an exploded view of a foldable electronic device according to an embodiment of the present application.

Fig. 2b is a schematic structural diagram of a foldable electronic device according to an embodiment of the present application.

Fig. 2c is a schematic structural diagram of still another foldable electronic device according to an embodiment of the present application.

Fig. 3 is a schematic structural diagram of a rotating shaft mechanism according to an embodiment of the present application.

Fig. 4a is a schematic structural diagram of a locking assembly according to an embodiment of the present application.

Fig. 4b is a schematic structural view of the locking assembly of fig. 4a in a locked state.

Fig. 4c is a schematic view of a state of the foldable electronic device.

FIG. 4d is a schematic view of the guide bar and the elastic member shown in FIG. 4 a.

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

Fig. 4f is a schematic view of still another connection between the elastic member and the wheel disc.

Fig. 5a is a schematic structural diagram of another locking assembly according to an embodiment of the present application.

Fig. 5b is a schematic view of the locking assembly of fig. 5a in a locked state.

Fig. 5c is a schematic structural diagram of a wheel disc according to an embodiment of the present application.

Fig. 5d is a schematic structural diagram of a rotating shaft according to an embodiment of the present application.

Fig. 6a is a schematic structural diagram of a locking assembly according to another embodiment of the present application.

FIG. 6b is a schematic view of a structure of the positioning member and the rotating shaft.

Fig. 6c is a schematic structural view of the locking assembly of fig. 6a in a locked state.

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

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings.

Hereinafter, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

Furthermore, in the present application, directional terms "upper", "lower", etc. are defined with respect to the orientation in which the components are schematically disposed in the drawings, and it should be understood that these directional terms are relative concepts, which are used for description and clarity with respect thereto, and which may be changed accordingly in accordance with the change in the orientation in which the components are disposed in the drawings.

The embodiment of the application provides foldable electronic equipment. The electronic device may be a foldable mobile phone, an electronic reader, a remote controller, a notebook computer, a Personal Digital Assistant (PDA), a vehicle-mounted device, a network television, a television, or the like. The form of the foldable electronic device is not particularly limited in the embodiments of the present application, and the foldable electronic device will be described below as an example of a foldable mobile phone.

Fig. 2a is an exploded schematic view of a foldable electronic device 01 according to an embodiment of the present application, and as shown in fig. 2a, the foldable electronic device 01 includes a cover 11, a display 12, a middle frame assembly 13, and a rear case 14. The rear shell 14 and the display screen 12 are respectively positioned at two sides of the middle frame assembly 13, the middle frame assembly 13 and the display screen 12 are arranged in the rear shell 14, the cover body 11 is arranged at one side of the display screen 12 far away from the middle frame assembly 13, and the display surface of the display screen 12 faces the cover body 11.

The structure of the display 12, the cover 11 and the rear case 14 is not limited in the embodiment of the present application, and may be set according to the use of the foldable electronic device 01.

Printed circuit boards (printed circuit boards, PCBs), batteries, cameras, and other electronic components in the foldable electronic device 01 may be disposed on the center assembly 13.

The middle frame assembly 13 includes a first middle frame 10, a second middle frame 20 and a rotating shaft mechanism 30, and the first middle frame 10 and the second middle frame 20 are rotatably connected through the rotating shaft mechanism 30. Thus, the angle between the first middle frame 10 and the second middle frame 20 can be increased or decreased by the rotation shaft mechanism 30.

The folding manner of the foldable electronic device 01 is not limited in the embodiment of the present application, for example, the foldable electronic device 01 may be folded inwards or outwards.

The inward folding means: after the foldable electronic device 01 is completely folded, the display 12 is located inside the foldable electronic device 01.

The outward folding means: after the foldable electronic device 01 is completely folded, the display 12 is located outside the foldable electronic device 01.

Fig. 2b is a schematic structural diagram of a foldable electronic device 01 according to an embodiment of the present application, and in fig. 2b, after the rotation of the rotation shaft mechanism 30 along the forward direction a, the included angle between the first middle frame 10 and the second middle frame 20 is reduced, and the foldable electronic device 01 is folded. After the foldable electronic device 01 is completely folded, the display screen 12 is located at the inner side of the foldable electronic device 01, and two ends of the display screen 12 are mutually attached. After the rotating shaft mechanism 30 rotates along the reverse direction B, the included angle between the first middle frame 10 and the second middle frame 20 increases, and the foldable electronic device 01 is unfolded.

Fig. 2c is a schematic structural diagram of still another foldable electronic device 01 according to an embodiment of the present application, and in fig. 2c, after the rotation of the rotation shaft mechanism 30 along the forward direction a, the included angle between the first middle frame 10 and the second middle frame 20 is reduced, and the foldable electronic device 01 is folded. After the foldable electronic device 01 is completely folded, the display screen 12 is located at the outer side of the foldable electronic device 01, and two ends of the rear case 14 are mutually attached. After the rotating shaft mechanism 30 rotates along the reverse direction B, the included 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 fig. 2B and 2c, the forward direction a is clockwise and the reverse direction B is counter-clockwise. It will be appreciated that in other embodiments of the application, the forward direction a may be counterclockwise and the reverse direction B may be clockwise, as the application is not limited in this regard.

When the foldable electronic device 01 falls to the ground, the foldable electronic device 01 has a tendency to move to the folded state or the unfolded state under the force of the ground facing the foldable electronic device 01. When the foldable electronic device 01 has a movement trend of changing to a folded state, under the action of inertia, the rotating shaft mechanism 30 rotates along the forward direction a and reduces the included angle between the first middle frame 10 and the second middle frame 20, so that the rotating shaft mechanism 30 collides with the ground, and the collision may cause the damage or deformation of the rotating shaft mechanism 30, thereby causing the damage or deformation of the display screen 12 and affecting the service life. Especially, when the angle between the first middle frame 10 and the second middle frame 20 is large, the damage of the rotating shaft mechanism 30 is the largest after being collided.

According to the rotating shaft mechanism 30 provided by the embodiment of the application, after one side of the foldable electronic equipment 01 is grounded, the foldable electronic equipment 01 is restrained from being continuously folded, the damage to the rotating shaft mechanism 30 after the foldable electronic equipment 01 falls is relieved, and the influence of the falling on the display screen 12 is reduced.

When the rotation speed of the rotating shaft mechanism 30 along the positive direction a is larger, the rotating shaft mechanism 30 does not rotate any more, and the included angle between the first middle frame 10 and the second middle frame 20 does not continuously decrease.

Fig. 3 is a schematic structural diagram of a rotating shaft mechanism 30 according to an embodiment of the present application, referring to fig. 3, the rotating shaft mechanism 30 includes a rotating shaft 100 and a locking assembly 200, the rotating shaft 100 is connected with the locking assembly 200, and when the rotating speed of the rotating shaft mechanism 30 in the forward direction a is large, the locking assembly 200 locks the rotating shaft 100 to prevent the rotating shaft 100 from rotating. When the spindle mechanism 30 rotates in the reverse direction B, the locking assembly 200 does not lock the spindle 100. Since the foldable electronic device 01 is unfolded after the rotation of the rotation shaft mechanism 30 in the reverse direction B, the damage of the rotation shaft 100 to the secondary landing in the unfolded state of the foldable electronic device 01 is small, and thus, the locking thereof may not be performed.

In fig. 3, the spindle mechanism 30 further includes a drive shaft 110 and a gear pair 120, and the drive shaft 110 and the spindle 100 are connected by the gear pair 120.

Thus, the effect of the locking assembly 200 connected with the rotation shaft 100 on the rotation shaft 100 is transmitted to the driving shaft 110 through the gear pair 120, and the locking assembly 200 can control the rotation of the rotation shaft 100 and the driving shaft 110 simultaneously.

In fig. 3, the rotating shaft 100 is a driven shaft, and it is understood that in other embodiments, the rotating shaft 100 may be a driving shaft.

In fig. 3, the locking assembly 200 is coupled to the spindle 100. The locking assembly 200 is in the same rotational direction as the shaft 100, and the locking assembly 200 is in the opposite rotational direction to the shaft 100.

It is understood that in other embodiments, the lock assembly 200 may be coupled to the drive shaft 110. The steering of the shaft locked by the locking assembly 200 is selected according to the relationship between the change of the included angle 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 forward direction a, the foldable electronic device 01 is folded, and the rotating shaft 100 can be locked by the locking assembly 200 after reaching a preset speed in the forward direction a. When the foldable electronic device 01 is folded, the driving shaft 110 rotates along the reverse direction B, and if the locking assembly 200 is connected with the driving shaft 110, the locking assembly 200 locks the driving shaft 110 after the rotating speed of the driving shaft 110 reaches the preset speed along the reverse direction B.

In fig. 3, the spindle mechanism 30 further includes a link 130, and the drive shaft 110, the locking assembly 200, and the spindle 100 are rotatably connected to the link 130.

The number of the locking assemblies 200 is not limited in the embodiment of the present application, for example, the locking assemblies 200 may be plural, and each locking assembly 200 is connected to a different rotating shaft 100. The rotation of the locking shaft 100 needs to overcome the torque of the rotation of the shaft 100, and the plurality of locking assemblies 200 can jointly overcome the torque, so that the reaction force received by each locking assembly 200 is smaller, the strength required for each locking assembly 200 is reduced, and the abrasion of the locking assembly 200 is reduced.

Or the number of the locking assemblies 200 may be one, and the volume of the spindle mechanism 30 may be reduced.

Fig. 4a is a schematic structural diagram of a locking assembly 200 according to 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 disk 230, and a second locking portion 240.

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

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

The forward direction a refers to the direction in which the foldable electronic device 01 is folded after the rotating shaft 100 rotates. The reverse direction B means that the foldable electronic device 01 is unfolded after the rotation of the rotation shaft 100 in this direction.

For example, when the rotational speed of the rotating shaft 100 in the forward direction a is less than the preset rotational speed, the centrifugal force of the first locking portion 220 is small, and the first locking portion 220 and the second locking portion 240 are in a separated state. The rotational speed in the forward direction a increases, the centrifugal force of the first locking portion 220 increases, the first locking portion 220 moves close to the second locking portion 240 until the first locking portion 220 contacts and is clamped with the second locking portion 240, and the rotating shaft 100 does not continue to rotate under the action of the locking disc 230. When the rotation shaft 100 rotates in the reverse direction B, the first locking portion 220 and the second locking portion 240 are in a separated state.

In normal use, when the rotating shaft 100 rotates along the forward direction a, the first locking portion 220 and the second locking portion 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 to the ground, and the foldable electronic device 01 has a folding trend under the reaction force of the ground, the rotation speed of the rotating shaft 100 in the forward direction a increases to the preset rotation speed under the inertia effect, and the centrifugal force of the first locking portion 220 connected with the rotating wheel 210 increases, so that the first locking portion 220 moves close to the second locking portion 240 and is clamped with the second locking portion 240, the rotating shaft 100 is restrained from continuing to rotate, the foldable electronic device 01 is restrained from continuing to fold, the damage of the rotating shaft 100 is small when the rotating shaft 100 lands, the damage degree of the display screen 12 is reduced, and the service life of the foldable electronic device 01 is prolonged.

When the foldable electronic device 01 has an unfolding trend under the reaction force of the ground, the rotating shaft 100 rotates to a preset rotating speed along the reverse direction B under the inertia effect, the rotating shaft 100 is not locked, the unfolding angle of the foldable electronic device 01 is larger, and the damage to the rotating shaft 100 after the rotating shaft 100 is grounded for the second time is smaller.

The embodiment of the application does not limit the preset rotating speed, and can be set according to the requirement.

The number of the first locking portions 220 and the second locking portions 240 is not limited in the embodiment of the present application. In some embodiments, the second locking parts 240 are plural, and the plural second locking parts 240 are spaced apart along the inner circumferential wall of the locking disk 230. Thus, the first locking portion 220 may be engaged with any one of the second locking portions 240 to restrict rotation of the rotation shaft 100. When the rotational speed of the rotating shaft 100 in the forward direction reaches the preset rotational speed, the locking can be rapidly performed, the time required for locking is reduced, and the corresponding speed of the locking assembly 200 is increased.

The shapes of the first locking portion 220 and the second locking portion 240 are not limited in the embodiment of the present application. For example, the first locking portion 220 and the second locking portion 240 may have a tooth structure that can be engaged with each other. When the first lock portion 220 and the second lock portion 240 are in the engaged state, the force in the forward direction a cannot separate the first lock portion 220 from the second lock portion 240, and the force in the reverse direction B can separate the first lock portion.

The shape of the locking disk 230 is not limited in the embodiment of the present application. Illustratively, the locking disk 230 may be a circular ring structure. Or the outer circumference of the locking disk 230 may be other irregular shapes.

Referring to fig. 3 again, the connection manner between the locking plate 230 and the link 130 is not limited in the embodiment of the present application. For example, the locking disk 230 and the link 130 may be fixedly connected, welded, or clamped, etc.

The shape of the rotating wheel 210 is not limited in the embodiment of the present application. Illustratively, the rotating wheel 210 may have a circular ring structure, or in order to reduce the mass of the rotating wheel 210, the rotating wheel 210 may have an irregular shape, and the rotating wheel 210 may not contact the second locking part 240 during the normal rotation of the rotating shaft 100.

In the embodiment of the present application, the first locking portion 220 moves close to the second locking portion 240 and is engaged with the second locking portion 240, and the first locking portion 220 and the second locking portion 240 are separated from each other in various manners, which is not limited in the embodiment of the present application.

For example, in some embodiments, the first locking portion 220 is fixedly connected to the rotating wheel 210, and when the rotating shaft 100 reaches the preset rotating speed along the positive direction a, the first locking portion 220 moves close to the second locking portion 240 and is clamped with the second locking portion 240 away from the center of the rotating shaft 100 and the rotating wheel 210. Or 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 forward direction a, the first locking portion 220 moves away from the rotating wheel 210 and approaches the second locking portion 240 and is clamped with the second locking portion 240.

The material of the locking assembly 200 is not limited in the embodiment of the present application, and for example, in order to reduce the weight of the locking assembly 200 and improve the mechanical strength of the locking assembly 200 and reduce the abrasion thereof, the material of the locking assembly 200 may be carbon fiber, and it is understood that in other embodiments of the present application, the locking assembly 200 may be other materials.

Various configurations for disengaging and engaging the first locking portion 220 and the second locking portion 240 will be described below as examples.

Example one

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

When the rotational speed of the rotating shaft 100 in the forward direction a reaches the preset rotational speed, one end of the first locking portion 220 rotates relative to the wheel disc 211, and one end of the first locking portion 220 away from the wheel disc 211 moves close to the second locking portion 240 and is clamped with the second locking portion 240, and in this process, the elastic member 212 stores elastic potential energy that can enable the first locking portion 220 to move away from the second locking portion 240. When the first locking portion 220 and the second locking portion 240 are in the locked state and the rotating shaft 100 rotates along the opposite direction B, the elastic potential energy of the elastic member 212 separates the first locking portion 220 from the second locking portion 240.

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

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

In fig. 4a, the first locking portion 220 and the second locking portion 240 are in a separated state, in which the rotation shaft 100 is not locked in the forward direction a or the reverse direction B, and the foldable electronic device 01 can be folded or unfolded.

Fig. 4B is a schematic structural view of the locking assembly 200 in fig. 4a in a locked state, and in fig. 4B, the first locking portion 220 and the second locking portion 240 are in a separated state, in which the rotating shaft 100 is locked, and the rotating shaft 100 cannot rotate further in the forward direction a and can rotate in the reverse direction B.

Referring to fig. 4b, when the rotating shaft 100 rotates along the forward direction a, the wheel 211, the first locking portion 220 and the elastic member 212 rotate synchronously. The first locking portion 220 receives both the tensile force of the elastic member 212 and the centrifugal force of the rotation shaft 100 thereto. When the rotational speed of the rotational shaft 100 in the forward direction a reaches the preset rotational speed, the centrifugal force received by the first locking portion 220 increases, and the centrifugal force is greater than the elastic force of the elastic member 212 to move the end portion of the first locking portion 220 away from the wheel disc 211.

After the rotational speed of the rotating shaft 100 in the forward direction a reaches the preset rotational speed, the distance between the end of the first locking portion 220 and the wheel disc 211 reaches the preset distance L1, so that the first locking portion 220 and the second locking portion 240 are clamped, the rotating shaft 100 is locked, and the foldable electronic device 01 cannot be folded continuously.

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 track of the first locking portion 220 and the second locking portion 240 is shortened only until the first locking portion 220 is engaged with the second locking portion 240.

The preset rotation speed along the forward direction a can be set by detecting the rotation speed of the rotating shaft 100 in the free falling state, so that the rotating shaft 100 is locked after the rotation speed along the forward direction a reaches the preset rotation speed by adjusting the parameters such as the mass of the first locking part 220, the diameter of the wheel disc 211, the elastic potential energy of the elastic member 212 and the like.

It can be appreciated that when the rotation speed of the rotation shaft 100 along the forward direction a is less than the preset rotation speed, the rotation shaft 100 is not locked, and the foldable electronic device 01 can be folded normally. Therefore, when a user normally folds the foldable electronic device 01, the possibility that the rotating shaft 100 is 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 rotation 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 far away from the second locking portion 240, and the first locking portion 220 is reset to the state shown in fig. 4 a.

Therefore, the foldable electronic device 01 provided by the embodiment of the application can be locked after being quickly folded, after the foldable electronic device 01 is unfolded by a user after being locked to enable the rotating shaft 100 to rotate along the reverse direction B, the foldable electronic device 01 can be unlocked to be continuously used, so that the foldable electronic device 01 can protect the rotating shaft 100 from being damaged under the quick folding trend. And does not affect normal folding and normal unfolding.

When the locking assembly 200 is in the state shown in fig. 4a, the rotary shaft 100 can be rotated in either the forward direction a or the reverse direction B.

In fig. 4a, the first locking portion 220 is engaged with the second locking portion 240 with directionality, that is, the first locking portion 220 can be engaged with the second locking portion 240 only after rotating in the forward direction a, and the first locking portion 220 cannot be engaged with the second locking portion 240 after rotating in the reverse direction B.

Fig. 4c is a schematic view of a state of the foldable electronic device 01, for example, when the foldable electronic device 01 falls in the posture shown in fig. 4c, the rotating shaft 100 is rapidly rotated along the direction B under the action of inertia, the unfolding angle of the foldable electronic device 01 is increased, then the foldable electronic device 01 is landed again, and in the process of landing again, the rotating shaft 100 is located at a side of the foldable electronic device 01 away from the bottom surface, the rotating shaft 100 is not directly contacted with the ground, and the rotating shaft 100 is not easily damaged, so that the locking assembly 200 may not lock the rotating shaft 100 when rapidly rotating along the direction B.

Embodiments of the present application are not limited to the shape of wheel disc 211, and in FIG. 4a wheel disc 211 is generally triangular, and in other embodiments wheel disc 211 may be circular or other irregular shape. During the rotation of the rotation shaft 100, the movement track of the wheel disc 211 may not overlap with the second locking portion 240.

The connection mode of the wheel disc 211 and the rotating shaft 100 is not limited in the embodiment of the present application, and illustratively, a non-circular hole is provided on the wheel disc 211 and is clamped with the rotating shaft 100. Or the surface of the rotating shaft 100 is provided with a tooth, the wheel 211 is connected with the tooth, etc.

The structure of the elastic member 212 is not limited in the embodiment of the present application, for example, the elastic member 212 may be a spring, an elastic rubber strip, a rubber sleeve, or the like.

The embodiment of the present application does not limit the manner in which first locking portion 220 is rotatably coupled to wheel disc 211, for example, first locking portion 220 is rotatably coupled to wheel disc 211 by a rotation pin or first locking portion 220 is rotatably coupled to wheel disc 211 by a hinge.

In fig. 4a, the locking assembly 200 further includes a guide rod 213, 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. Therefore, the guide rod 213 can restrict the compression or extension path of the elastic member 212, and the guide rod 213 guides the first locking portion 220 in the process that the first locking portion 220 is close to or far from the second locking portion 240 under the action of the elastic member 212, so as to avoid the deviation track of the first locking portion 220 in the moving process and the failure to be smoothly clamped or separated with the second locking portion 240.

When the rotational speed of the rotating shaft 100 in the forward direction a reaches the preset rotational speed, the first locking portion 220 rotates relative to the wheel disc 211, one 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 is clamped with the second locking portion 240. Also 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 opposite direction B, the elastic potential energy of the elastic member 212 slides the first locking portion 220 relative to the guide rod 213 and is separated from the second locking portion 240.

The connection between guide bar 213 and wheel 211 may be direct connection or indirect connection.

Fig. 4d is a schematic structural diagram of the guide rod 213 and the elastic member 212 in fig. 4a, and referring to fig. 4a and fig. 4d, the locking assembly 200 further includes a limiting member 214. The limiting piece 214 is connected with the wheel disc 211, and the guide rod 213 passes through the limiting piece 214 and is in sliding connection with the limiting piece 214. Opposite ends of the elastic member 212 are respectively connected with a guide rod 213 and a limiting member 214. Or the opposite ends of the elastic member 212 are respectively connected with the limiting member 214 and the first locking portion 220.

When the rotational speed of the rotating shaft 100 in the forward direction a reaches the preset rotational speed, the first locking portion 220 rotates relative to the wheel disc 211, the end of the first locking portion 220 away from the wheel disc 211 slides together with the guide rod 213 relative to the limiting member 214, the first locking portion 220 moves close to the second locking portion 240 and is clamped with the second locking portion 240, and in this process, the elastic member 212 stores elastic potential energy that can enable the first locking portion 220 to move away from the second locking portion 240. When the rotating shaft 100 rotates along the reverse direction B, the elastic potential energy of the elastic member 212 slides the first locking portion 220 and the guide rod 213 together relative to the limiting member 214, and the first locking portion 220 is separated from the second locking portion 240.

In this way, when the guide bar 213 moves synchronously with the first locking portion 220 and the first locking portion 220 moves close to the second locking portion 240, the guide bar 213 slides relative to the stopper 214, the elastic member 212 is stretched, and the guide bar 213 moves away from the stopper 214 together with the first locking portion 220. 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 are close to the limiting member 214. The limiting member 214 can restrict the movement track of the guide rod 213, so that the first locking portion 220 and the second locking portion 240 can be smoothly clamped or reset.

The connection mode of the elastic member 212 and the guide rod 213 is not limited in the embodiment of the present application, for example, one end of the guide rod 213 is provided with a stop portion, two ends of the elastic member 212 are not directly connected to the guide rod 213, and the stop portion can prevent the elastic member 212 from being separated from the guide rod 213. Or one end of the elastic member 212 is directly connected to the guide bar 213 and the other end is a free end.

The present application is not limited to the sliding connection between the guide bar 213 and the first locking portion 220, referring to fig. 4a and 4d, a pin is disposed at an end of the guide bar 213, and extends into the sliding slot 104 of the first locking portion 220, and is slidably connected with the sliding slot 104.

In fig. 4a, the sliding chute 104 is a bar-shaped hole, and the extending direction of the sliding chute 104 may be set according to the movement track of the first locking portion 220 near the second locking portion 240.

In the embodiment of the present application, the guide bar 213 and the stopper 214 are not necessary. Elastic member 212 may be coupled to wheel 211 without using guide bar 213 or stopper 214.

For example, fig. 4e is a schematic connection diagram of the elastic member 212 and the wheel disc 211, and in fig. 4e, two opposite ends of the elastic member 212 are fixedly connected with the first locking portion 220 and the wheel disc 211, respectively. In this way, the first locking portion 220 can be close to or far away from the second locking portion 240 under the combined action of the elastic member 212 and the centrifugal force, and the connection manner in fig. 4e can reduce the weight and the volume of the locking assembly 200.

For example, fig. 4f is a schematic diagram illustrating still another connection between the elastic member 212 and the wheel 211, and in fig. 4f, the elastic member 212 is connected to the wheel 211 through a guide rod 213, one end of the guide rod 213 is fixedly connected to the wheel 211, and the other end of the guide rod 213 is slidably connected to the first locking portion 220. In this manner, the first locking portion 220 may be moved closer to or farther from the second locking portion 240, and may facilitate a reduction in weight and volume of the locking assembly 200.

Referring to fig. 4a and fig. 4f together, in fig. 4a, two opposite ends of the guide rod 213 are not directly connected to the wheel 211, and the entire guide rod 213 can move along with the first locking portion 220. In fig. 4f, one end of the guide bar 213 is fixedly coupled to the wheel 211, and the other end is slidably coupled to the first locking portion 220.

The shapes of the guide rod 213 and the limiting member 214 are not limited in the embodiment of the present application, and are set according to the movement track of the first locking portion 220.

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

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

Example two

Fig. 5a is a schematic structural diagram of another locking assembly 200 according to an embodiment of the present application, in the example of fig. 5a, a first locking portion 220 is fixedly connected to a rotating wheel 210, and the rotating wheel 210 is movably connected to the rotating shaft 100. When the rotational speed of the rotating shaft 100 in the forward direction a increases, 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 rotation shaft 100 rotates in the reverse direction B, the axis of the rotation shaft 100 coincides with the center of the rotation wheel 210 to separate the first locking part 220 from the second locking part 240.

In fig. 5a, 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.

Fig. 5b is a schematic structural diagram of the locking assembly 200 in the locked state in fig. 5a, in fig. 5b, the axis m of the rotating shaft 100 is deviated from the center n of the rotating wheel 210, and the first locking portion 220 is engaged with the second locking portion 240.

The shape of wheel disc 211 is not limited in the embodiment of the present application, and 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 is the center of the motion track of the rotating wheel 210.

The coincidence of the axis m of the rotating shaft 100 and the center n of the rotating wheel 210 includes: the center n is collinear with the axis m, and the distance between the center n and the axis m is smaller than or equal to a preset distance L2, where the preset distance L2 is the distance between the center n and the axis m when the first locking portion 220 and the second locking portion 240 are clamped.

In fig. 5b, the rotating wheel 210 includes a wheel disc 211, a first limiting portion 201 and a second limiting portion 202, where the first limiting portion 201 and the second limiting portion 202 are distributed on an inner peripheral wall of the wheel disc 211 at intervals, and the wheel disc 211 is fixedly connected with the first locking portion 220.

The rotation shaft 100 is in contact with the first limiting portion 201 or the second limiting portion 202, in other words, the rotation shaft 100 is not in contact with the first limiting portion 201 and the second limiting portion 202 at the same time.

When the rotating shaft 100 rotates in the forward direction a, the first limiting portion 201 abuts against the rotating shaft 100, the rotating shaft 100 transmits power to the wheel disc 211 and the first locking portion 220 through the first limiting portion 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 synchronously rotate. When the rotational speed of the rotation shaft 100 in the forward direction a suddenly increases, the wheel disc 211 and the first locking part 220 continue to move in the tangential direction of the rotation shaft 100 under the inertia, the first limiting part 201 is separated from the rotation shaft 100, and the distance between the axis m of the rotation shaft 100 and the center n of the rotation wheel 210 increases.

If the rotation speed of the rotation shaft 100 in the forward direction a reaches the preset rotation speed, the interaction force between the first limiting portion 201 and the rotation shaft 100 is larger, the distance between the first limiting portion 201 and the rotation shaft 100 increases, and only the distance between the axis m of the rotation shaft 100 and the center n of the rotation 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 relatively move in a short time, and only until the second limiting portion 202 abuts against the rotating shaft 100, the second limiting portion 202 has an acting force on the rotating shaft 100, so that the rotating shaft 100 is locked.

As shown in fig. 5b, after the first limiting portion 201 is separated from the rotating shaft 100, if the rotating shaft 100 rotates at a speed less than the preset rotating speed in the forward direction a, the inertia of the first limiting portion 201 is insufficient 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 at this time, the first locking portion 220 and the second locking portion 240 are still in a separated state. After the rotation of the rotation shaft 100 is continued, the rotation shaft 100 is abutted against the first limiting portion 201 again, and the rotation shaft 100 and the wheel disc 211 continue to move synchronously. Thus, when the rotational speed of the rotating shaft 100 in the forward direction a does not reach the preset rotational speed, the rotating shaft 100 is not locked.

When the locking assembly 200 is in the locked state shown in fig. 5B, the rotating shaft 100 is rotated in the reverse direction B, the rotating shaft 100 acts on the wheel disc 211 through the second limiting part 202, so that the wheel disc 211 is rotated in the reverse direction B, the first locking part 220 is separated from the second locking part 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. 5a, the rotary shaft 100 can be rotated in either the forward direction a or the reverse direction B.

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

Illustratively, the first locking portion 220 and the second locking portion 240 are teeth engaged 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 is engaged with the first locking portion 220 and the second locking portion 240 under the inertial action, and the rotating shaft 100 is locked. Similarly, the rotation shaft 100 rotates in the forward direction a to separate the first locking portion 220 from the second locking portion 240.

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

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

Fig. 5c is a schematic structural diagram of a wheel disc 211 according to an embodiment of the present application, referring to fig. 5c, an outer contour of the wheel disc 211 is circular, and an inner hole is irregular.

The outer contour of wheel disc 211 is not limited in the embodiment of the present application, and may be circular, for example, or may be shaped in order to reduce weight.

The shape of the inner hole is not limited in the embodiment of the application, for example, the inner hole is a round hole, a strip hole or a special-shaped hole. The inner hole is matched with 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 smaller than 360 degrees, so that the rotating shaft 100 can synchronously rotate with the wheel disc 211.

The shapes of the first limiting portion 201 and the second limiting portion 202 are not limited in the embodiment of the present application, 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 to the wall of the inner hole.

The connection manner of wheel disc 211 and first locking portion 220 is not limited in the embodiment of the present application, for example, wheel disc 211 is welded with first locking portion 220, or wheel disc 211 is integrally formed with first locking portion 220.

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

Fig. 5d is a schematic structural diagram of a rotating shaft 100 according to an embodiment of the present application, referring to fig. 5a and 5d, the rotating shaft 100 includes a shaped section 101, and a wheel disc 211 is sleeved outside the shaped section 101.

In fig. 5d, the shaped section 101 is flat, and two opposite sides of the flat are respectively used for abutting against the first limiting portion 201 or the second limiting portion 202.

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

It should be understood that the foregoing profiled section 101 may be formed by cutting the rotating shaft 100, or may be formed by sleeving a positioning member having the same outer contour as the profiled section 101 on the rotating shaft 100, and may be selected according to the size of the rotating shaft 100 and the size of the wheel disc 211.

In fig. 5a, the first limiting portion 201 and the second limiting portion 202 are arc-shaped protruding portions, and in other embodiments, may have 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 be offset or coincident with the center n of the rotating wheel 210 by other means.

Fig. 6a is a schematic structural diagram of another locking assembly 200 according to an embodiment of the present application, in fig. 6a, the rotating wheel 210 further includes a positioning member 215, and the rest of the structures in the rotating wheel 210 are the same as those in the example shown in fig. 5a, which is not repeated here.

The positioning element 215 is used for being connected with the rotating shaft 100, the positioning element 215 and the rotating shaft 100 can synchronously rotate, and the positioning element 215 is optionally abutted with the first limiting part 201 or the second limiting part 202. Illustratively, when the spindle 100 rotates in the forward direction a, the positioning member 215 abuts against the first limiting portion 201. When the rotating shaft 100 rotates along the reverse direction B, the limiting member 214 abuts against the second limiting portion 202.

Thus, the shaft 100 may have a cylindrical shape, etc., and the shaft 100 may not be cut, and the locking assembly 200 may be applied to more shafts 100. It is understood that the shaft 100 may have other shapes.

The connection manner of the positioning element 215 and the rotating shaft 100 is not limited in the embodiment of the present application, for example, the positioning element 215 is clamped with the rotating shaft 100, or the positioning element 215 is fixedly connected with the rotating shaft 100. Or in some embodiments, the retainer 215 is integrally formed with the spindle 100.

The shape of the positioning member 215 is not limited in the embodiment of the present application.

It will be appreciated that the profiled section 101 in fig. 5a can be seen as being formed as a square shaped retainer 215 integrally with the shaft 100.

Fig. 6b is a schematic structural diagram of the positioning member 215 and the rotating shaft 100, and in fig. 6b, the positioning member 215 is in an open loop structure, and the open loop structure is sleeved outside the rotating shaft 100 and is clamped with the rotating shaft 100.

The aforementioned open-loop structure means: the positioning members 215 are not connected end to end in the circumferential direction of the rotation shaft 100.

Opposite ends of the open loop structure are respectively used for abutting against the first limiting part 201 or the second limiting part 202. Illustratively, when the rotating shaft 100 rotates in the forward direction a, one end of the open-loop structure abuts against the first limiting portion 201, and when the rotating shaft 100 rotates in the reverse direction B, the other end of the open-loop structure abuts against the second limiting portion 202.

The embodiment of the 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. 6b, but may have other structures.

Fig. 6c is a schematic view of the locking assembly 200 in fig. 6a, please refer to fig. 6c together with fig. 6a, when the locking assembly 200 is in the state shown in fig. 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 along the forward direction a or the 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 and the second locking portion 240 are engaged, and the rotating shaft 100 cannot continue to rotate in the forward direction a. The first locking portion 220 is separated from the second locking portion 240 after the rotation of the rotation shaft 100 along the reverse direction B, and is specifically far away from the locking assembly 200 shown in fig. 5a, which is not described herein again.

Similarly, after the foldable electronic device 01 including the locking assembly 200 shown in fig. 6a falls, the locking assembly 200 can lock the rotating shaft 100 and cannot rotate continuously along the forward direction a, so as to protect the rotating shaft 100, reduce damage to the rotating shaft 100 and the display screen 12, and prolong the service life of the foldable electronic device 01.

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

Obviously, when the foldable electronic device 01 including the locking assembly 200 collides with the outside (e.g. falls to the ground) with a large force and the posture during the collision causes the foldable electronic device 01 to have further folding inertia, the locking assembly 200 starts the self-locking function to prevent the foldable electronic device 01 from continuing folding, so as to reduce the damage to the rotating shaft 100 caused by the secondary collision, thereby improving the damage problem of the display screen 12 caused by the damage to the rotating shaft 100 and prolonging the service life of the foldable electronic device 01.

The foregoing is merely illustrative of specific embodiments of the present application, and the scope of the present application is not limited thereto, but any changes or substitutions within the technical scope of the present application should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (12)

1. A locking assembly for connection with a spindle of a foldable electronic device, comprising:

the rotating wheel is used for being connected with the rotating shaft;

a first locking portion connected to an outer peripheral wall of the rotating wheel;

The locking disc is sleeved outside the rotating wheel; and

A second locking portion connected to an inner peripheral wall of the locking plate;

When the rotating shaft reaches a preset rotating speed along the positive rotating speed, the first locking part moves close to the second locking part and is clamped with the second locking part;

when the first locking part and the second locking part are in a clamping state and the rotating shaft rotates in the reverse direction, the first locking part is separated from the second locking part.

2. The lock assembly of claim 1, wherein the rotating wheel comprises: the wheel disc is used for being fixedly connected with the rotating shaft; one end of the first locking part is rotationally connected with the wheel disc, and the other end of the first locking part is elastically connected with the wheel disc through the elastic piece;

When the rotating speed of the rotating shaft in the forward direction reaches a preset rotating speed, the first locking part rotates relative to the wheel disc, so that one end of the first locking part moves close to the second locking part and is clamped with the second locking part;

When the first locking part and the second locking part are in a clamping state and the rotating shaft rotates in the reverse direction, the elastic piece enables the first locking part to be separated from the second locking part.

3. The lock assembly of claim 2, wherein the rotating wheel further comprises: a guide rod; the elastic piece is sleeved outside the guide rod, one end of the guide rod is connected with the first locking part in a sliding manner, and the other end of the guide rod is connected with the wheel disc;

When the rotating speed of the rotating shaft in the forward direction reaches a preset rotating speed, the first locking part slides relative to the guide rod to enable one end of the first locking part to be close to the second locking part and to be clamped with the second locking part;

when the first locking part and the second locking part are in a clamping state and the rotating shaft rotates in the reverse direction, the elastic piece enables the first locking part to slide relative to the guide rod and separate from the second locking part.

4. The lock assembly of claim 2, wherein the rotating wheel further comprises: the elastic piece is sleeved outside the guide rod, and the guide rod is in sliding connection with the first locking part; the guide rod passes through the limiting piece and is in sliding connection with the limiting piece;

Opposite ends of the elastic piece are respectively and elastically connected with the guide rod and the limiting piece; or two opposite ends of the elastic piece are respectively and elastically connected with the limiting piece and the first locking part;

when the rotating speed of the rotating shaft in the forward direction reaches a preset rotating speed, the first locking part and the guide rod slide together relative to the limiting piece so that one end of the first locking part is close to the second locking part and is clamped with the second locking part;

When the first locking part and the second locking part are in a clamping state and the rotating shaft rotates in the reverse direction, the elastic piece enables the first locking part and the guide rod to slide relative to the limiting piece together and to be far away from the second locking part.

5. The locking assembly of claim 1, wherein the first locking portion is fixedly connected to the rotating wheel; the rotating wheel is used for being movably connected with the rotating shaft;

When the rotating speed of the rotating shaft in the forward direction reaches a preset rotating speed, the axis of the rotating shaft deviates from the center of the rotating wheel so that the first locking part and the second locking part are clamped;

When the first locking part and the second locking part 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, so that the first locking part and the second locking part are separated.

6. The locking assembly of claim 5, wherein the rotating wheel comprises a wheel disc, a first limiting part, a second limiting part and a positioning piece, the wheel disc is sleeved outside the positioning piece, the first limiting part and the second limiting part are distributed on the inner peripheral wall of the wheel disc at intervals, and the first locking part is connected with the outer peripheral wall of the wheel disc;

the positioning piece is used for being connected with the rotating shaft, and the first limiting part or the second limiting part is abutted with the positioning piece;

When the first limiting part is abutted with the positioning piece and the rotating speed of the rotating shaft in the forward direction reaches a preset rotating speed, the axis of the rotating shaft deviates from the center of the rotating wheel;

When the second limiting part is abutted with the positioning piece 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 of claim 6, wherein the positioning member has an open loop structure, and opposite ends of the open loop structure are respectively used for abutting against the first limiting portion or the second limiting portion.

8. The locking assembly of any one of claims 1-7, wherein the plurality of second locking portions are spaced apart along the inner peripheral wall of the locking disk.

9. A spindle mechanism, the spindle mechanism comprising: a spindle and the locking assembly of any one of claims 1-8, the spindle being connected to the rotatable wheel.

10. The spindle mechanism of claim 9, further comprising: the driving shaft is connected with the rotating shaft through the gear pair.

11. A foldable electronic device, characterized in that the foldable electronic device comprises: the first middle frame, the second middle frame and the rotating shaft mechanism of claim 9 or 10, wherein the first middle frame and the second middle frame are rotatably connected through the rotating shaft mechanism.

12. The foldable electronic device of claim 11, wherein an increase in an angle between a plane in which the first middle frame lies and a plane in which the second middle frame lies causes the foldable electronic device to unfold when the spindle rotates in a reverse direction.