阅读说明：本技术 一种铰链结构及可折叠电子设备 (Hinge structure and foldable electronic equipment ) 是由 朱明超 龙腾 钟梅芳 杨峻 于 2019-09-24 设计创作，主要内容包括：一种铰链结构及可折叠电子设备,该铰链结构可应用于可折叠电子设备,包括轴套、第一转轴和第二转轴,轴套用于连接可折叠电子设备的第一主体,第一转轴用于连接可折叠电子设备的第二主体；第一转轴伸入轴套与轴套摩擦配合；第二转轴伸入轴套与轴套配合；在可折叠电子设备自折叠状态到打开状态的过程中,第一转轴相对轴套转动产生第一扭力,且当第一主体与第二主体之间的夹角处于小于等于第一角度范围内,方便可折叠电子设备在开起过程中的单手操作；当第一主体与第二主体之间的夹角处于大于第一角度小于第二角度范围内,铰链结构输出大于第一扭力的第二扭力,可折叠电子设备不会出现掉屏现象,为用户提供便利。(A hinge structure and foldable electronic equipment, the hinge structure can be applied to the foldable electronic equipment, including axle sleeve, first spindle and second spindle, the axle sleeve is used for connecting the first body of the foldable electronic equipment, the first spindle is used for connecting the second body of the foldable electronic equipment; the first rotating shaft extends into the shaft sleeve and is in friction fit with the shaft sleeve; the second rotating shaft extends into the shaft sleeve to be matched with the shaft sleeve; in the process that the foldable electronic equipment is in the folded state to the opened state, the first rotating shaft rotates relative to the shaft sleeve to generate a first torsion force, and when an included angle between the first main body and the second main body is smaller than or equal to a first angle range, the foldable electronic equipment is convenient to operate by one hand in the opening process; when the included angle between the first main body and the second main body is larger than the first angle and smaller than the second angle, the hinge structure outputs a second torsion larger than the first torsion, the screen falling phenomenon of the foldable electronic equipment can not occur, and convenience is brought to users.)

1. A hinge structure is applied to foldable electronic equipment and is characterized by comprising a shaft sleeve, a first rotating shaft and a second rotating shaft, wherein the shaft sleeve is used for being connected with a first main body of the foldable electronic equipment;

the first rotating shaft extends into the shaft sleeve and can rotate around the axis of the first rotating shaft relative to the shaft sleeve, and the first rotating shaft is in friction fit with the shaft sleeve when rotating;

the second rotating shaft extends into the shaft sleeve and can rotate around the axis of the second rotating shaft relative to the shaft sleeve, and the second rotating shaft is matched with the shaft sleeve when rotating;

in the process of the foldable electronic device from the folded state to the opened state:

when the included angle between the first main body and the second main body is smaller than or equal to a first angle, the hinge structure outputs a first torsion;

when the included angle between the first main body and the second main body is larger than a first angle and smaller than a second angle, the hinge structure outputs a second torsion;

wherein the first angle is smaller than the second angle, and the second torsion is larger than the first torsion.

2. The hinge structure according to claim 1, wherein the first rotating shaft is further rotatable around an axis of the first rotating shaft relative to the second rotating shaft, and a limiting mechanism for limiting a rotation angle of the first rotating shaft relative to the second rotating shaft to be smaller than the first angle is arranged between the second rotating shaft and the first rotating shaft;

when the included angle between the first main body and the second main body is smaller than or equal to a first angle, the first rotating shaft rotates relative to the shaft sleeve, and the second rotating shaft is static relative to the shaft sleeve;

when the included angle between the first main body and the second main body is larger than a first angle and smaller than a second angle, the first rotating shaft is opposite to the shaft sleeve and drives the second rotating shaft to rotate relative to the shaft sleeve.

3. The hinge structure according to claim 2, wherein the first rotating shaft and the second rotating shaft are disposed oppositely; the limiting mechanism comprises a limiting piece and a rotating piece, the limiting piece is arranged on one of the second rotating shaft and the first rotating shaft, and the rotating piece is arranged on the other one of the second rotating shaft and the first rotating shaft;

an avoiding notch used for being matched with the rotating piece is formed at one end, facing the rotating piece, of the limiting piece, so that the angle of the first rotating shaft rotating relative to the second rotating shaft is limited to be smaller than or equal to the first angle.

4. The hinge structure according to claim 3, wherein the retaining member includes a connecting end surface perpendicular to the rotation axis of the rotary member and a retaining boss protruding from the connecting end surface toward the rotary member;

the avoidance gap is formed between the limiting boss and the connecting end face.

5. The hinge structure according to claim 4, wherein a cross section of the limit projection parallel to the connection end surface is a sector or an arc.

6. The hinge structure according to claim 4, wherein the stopper projection has a cutout.

7. The hinge structure according to claim 4, wherein an outer diameter of the stopper boss is smaller than an outer diameter of the connecting end face to form a shoulder;

or the outer diameter of the connecting end surface is smaller than that of the second rotating shaft to form a shaft shoulder.

8. The hinge structure according to claim 3, wherein the retaining member includes a connecting end surface perpendicular to the rotation axis of the rotary member, and a retaining groove formed on the connecting end surface;

the limiting groove forms the avoiding gap.

9. The hinge structure according to claim 8, wherein a cross section of the stopper groove parallel to the connecting end surface is a sector or an arc.

10. The hinge structure according to claim 3, wherein the first shaft and the second shaft are rotatably engaged with each other through a shaft hole.

11. The hinge structure as claimed in claim 2, wherein the second shaft has a collar, and the collar is sleeved on the first shaft;

the limiting mechanism comprises a first protrusion formed on the inner wall of the lantern ring and a second protrusion formed on the outer wall of the first rotating shaft and used for being matched with the first protrusion.

12. The hinge structure of claim 2, wherein the bushing comprises a first bushing and a second bushing that are relatively stationary;

the first rotating shaft extends into the first shaft sleeve and can rotate around the axis of the first rotating shaft relative to the first shaft sleeve, and the first rotating shaft is in friction fit with the first shaft sleeve when rotating;

the second rotating shaft extends into the second shaft sleeve and can rotate around the axis of the second rotating shaft relative to the second shaft sleeve, and the second rotating shaft is in friction fit with the second shaft sleeve when rotating.

13. The hinge structure according to claim 12, wherein a friction washer is further disposed between the first rotating shaft and the first bushing, and/or a friction washer is further disposed between the second rotating shaft and the second bushing.

14. The hinge structure according to claim 1, wherein the bushing includes a first bushing and a second bushing;

the first rotating shaft extends into the first shaft sleeve and can rotate around the axis of the first rotating shaft relative to the first shaft sleeve, and the first rotating shaft is in friction fit with the first shaft sleeve when rotating;

the second rotating shaft extends into the second shaft sleeve and can rotate around the axis of the second rotating shaft relative to the second shaft sleeve, and the second rotating shaft is matched with the second shaft sleeve when rotating;

the second rotating shaft is provided with a friction part which protrudes out of the circumferential surface of the second rotating shaft and can be in friction fit with the second shaft sleeve, the second shaft sleeve is provided with a groove area which can contain the friction part, and the angle corresponding to the groove area along the direction surrounding the axial lead of the second shaft sleeve is the first angle;

in the process of the foldable electronic device from the folded state to the opened state:

when the included angle between the first main body and the second main body is smaller than or equal to a first angle, the second rotating shaft rotates relative to the second shaft sleeve, and the friction part of the second rotating shaft is positioned in the groove area of the second shaft sleeve;

when the included angle between the first main body and the second main body is greater than a first angle and smaller than a second angle, the second rotating shaft is opposite to the second shaft sleeve and the friction part of the second rotating shaft is located outside the groove area of the second shaft sleeve.

15. Hinge construction according to any one of claims 1-14, wherein a stop block is arranged on the shaft sleeve and a stop is arranged on the first rotary shaft for cooperating with the stop block for defining a maximum angle of opening of the first body relative to the second body.

16. A foldable electronic device, comprising a first body, a second body and a hinge structure according to any one of claims 1-15.

Technical Field

The application relates to the technical field of electronic equipment, in particular to a hinge structure and foldable electronic equipment.

Background

The hinge structure is a key component for connecting foldable electronic devices, and its main function is to connect different bodies of the foldable electronic devices and provide damping. Taking a notebook computer as an example, the hinge structure is mainly used for connecting a screen and a keyboard base of the notebook computer, and provides a supporting force for the screen through a torsion force generated by the hinge structure in a normal use process. Traditional hinge structure is in order to provide sufficient holding power when the screen of notebook opens the operating angle state, the torsion that hinge structure self produced is generally greater than the gravity of screen, therefore, to the notebook computer that keyboard base weight is lighter, traditional hinge structure hardly realizes the screen of notebook that one hand opened, keyboard base can be jointly lifted when opening the screen promptly, just at this moment just need the user to press keyboard base with one hand, another hand application of force makes it rotatory just can open the screen to the direction of keeping away from keyboard base in the screen, such operation causes comparatively poor use experience to the user.

In order to solve the problem, the conventional operation at present is to reduce the weight of the screen of the notebook computer and increase the weight of the keyboard base, thereby achieving the purpose of opening the screen with one hand. The process requirement for reducing the weight of the screen is increased, the cost of the screen is increased, and the weight of the whole notebook computer is increased due to the increase of the weight of the keyboard base, so that the notebook computer is inconvenient to use and carry. If the torsion of the hinge structure is reduced, a screen dropping phenomenon may occur in the working state of the notebook computer due to the fact that the hinge structure cannot provide enough support for the screen, and the screen dropping phenomenon means that the screen suddenly drops towards the keyboard base in the use process of the notebook computer.

Disclosure of Invention

The embodiment of the application provides a hinge structure and a foldable electronic device, wherein the hinge structure is applied to the foldable electronic device, the foldable electronic device can be opened by one hand under the condition that the cost and the weight of the whole device are not increased, and meanwhile, the stability of the foldable electronic device in an opening state is ensured.

In a first aspect, the present application provides a hinge structure, which includes a shaft sleeve, a first rotating shaft and a second rotating shaft, wherein when the hinge structure is applied to a foldable electronic device (e.g., a notebook computer), the shaft sleeve can be connected to a first main body of the foldable electronic device (e.g., a keyboard base of the notebook computer), and the first rotating shaft can be connected to a second main body of the foldable electronic device (e.g., a screen of the notebook computer); the first rotating shaft extends into the shaft sleeve and can rotate around the axis of the first rotating shaft relative to the shaft sleeve, and the first rotating shaft is in friction fit with the shaft sleeve when rotating relative to the shaft sleeve; the second rotating shaft extends into the shaft sleeve and can rotate around the axis of the second rotating shaft relative to the shaft sleeve, and the second rotating shaft is matched with the shaft sleeve when rotating relative to the shaft sleeve; in the process that the foldable electronic equipment is in a folded state to an opened state, an included angle between the first main body and the second main body is gradually increased, and the first rotating shaft rotates relative to the shaft sleeve to generate first torsion through friction between the first rotating shaft and the shaft sleeve; when the included angle between the first main body and the second main body is smaller than or equal to a first angle, no torque force is output between the second rotating shaft and the shaft sleeve, the whole hinge structure only outputs a first torque force generated when the first rotating shaft and the shaft sleeve rotate in a friction mode, and the first torque force is small at the moment, so that a user can conveniently open the foldable electronic equipment by one hand; when the included angle between the first main body and the second main body is larger than the first angle and smaller than the second angle (certainly, the second angle is larger than the first angle), in addition to the first torsion generated by the friction between the first rotating shaft and the shaft sleeve, the friction fit between the second rotating shaft and the shaft sleeve can also generate a third torsion, the sum of the first torsion and the third torsion is set to be the second torsion, the second torsion is larger than the first torsion, and under the action of the second torsion, the first main body can keep an open stable state relative to the second main body, so that a user can conveniently operate the foldable electronic device, and convenience is brought to the user.

For the foldable electronic device, a maximum opening angle may exist, that is, a maximum included angle exists between the first main body and the second main body, for limiting the maximum opening angle, the hinge structure may further include a stop block on the shaft sleeve, and correspondingly, the stop block is disposed on the first rotating shaft, and when the first rotating shaft rotates relative to the shaft sleeve, the stop block and the stop block cooperate with each other to define a maximum rotation angle of the first rotating shaft relative to the shaft sleeve, so as to define a maximum included angle between the first main body and the second main body.

As mentioned above, when the included angle between the first body and the second body is larger than the first angle and smaller than the second angle, a first torque needs to be output between the first shaft and the shaft sleeve and a third torque needs to be output between the second shaft and the shaft sleeve, in order to achieve the effect, in a possible structure, the first rotating shaft can rotate around the axis thereof relative to the second rotating shaft, and a limiting mechanism for limiting the rotation angle of the first rotating shaft relative to the second rotating shaft to be smaller than a first angle is arranged between the second rotating shaft and the first rotating shaft, when the included angle between the first main body and the second main body is smaller than or equal to a first angle, the first rotating shaft rotates relative to the second rotating shaft, at the moment, the first rotating shaft rotates relative to the shaft sleeve, the second rotating shaft is static relative to the shaft sleeve, the limiting mechanism can limit the rotation of the first rotating shaft relative to the second rotating shaft within a first angle; when the angle of the first rotating shaft rotating relative to the second rotating shaft is larger than the first angle, the first rotating shaft can drive the second rotating shaft to rotate together under the limiting effect of the limiting mechanism to realize linkage, at the moment, the first rotating shaft generates first torsion force relative to the shaft sleeve in a friction rotation mode, meanwhile, the second rotating shaft generates third torsion force relative to the shaft sleeve in a friction rotation mode, and the hinge structure integrally outputs the second torsion force obtained by superposition of the first torsion force and the third torsion force. The first rotating shaft and the second rotating shaft can be in running fit through the shaft hole.

On the basis of the structure, the shaft sleeve can be split into a first shaft sleeve and a second shaft sleeve which are relatively static, the first rotating shaft extends into the first shaft sleeve and can rotate around the axial lead of the first rotating shaft relative to the first shaft sleeve, and the first rotating shaft is in friction fit with the first shaft sleeve when rotating relative to the first shaft sleeve; the second rotating shaft is arranged on the second shaft sleeve and can rotate around the axis of the second rotating shaft relative to the second shaft sleeve, and the second rotating shaft is in friction fit with the second shaft sleeve when rotating relative to the second shaft sleeve. The structure provides a possible installation mode of the hinge structure, and the first rotating shaft and the second rotating shaft can be matched with the shaft sleeve relatively flexibly according to use scenes. In addition, in the shaft sleeve structure, the first rotating shaft and the first shaft sleeve may be in an interference fit, or a friction washer may be disposed between the first rotating shaft and the first shaft sleeve, so that the first rotating shaft generates the first torsion force by friction when rotating relative to the first shaft sleeve. Of course, the second rotating shaft and the second sleeve may also be matched in a manner similar to the matching manner of the first rotating shaft and the first sleeve, so that the second rotating shaft is in friction fit with the second sleeve to generate a third torque force when rotating relative to the second sleeve under the driving of the first rotating shaft.

The limiting mechanism arranged between the first rotating shaft and the second rotating shaft needs to be arranged according to the specific structure of the first rotating shaft and the second rotating shaft.

In a possible implementation manner, the second rotating shaft may be formed with a collar, the collar may be sleeved on the first rotating shaft, so that the first rotating shaft can rotate relative to the collar without friction, a first protrusion is formed on an inner wall of the collar, a second protrusion is formed on the first rotating shaft, the first protrusion and the second protrusion are equivalent to a limiting mechanism, and when the first rotating shaft rotates relative to the second rotating shaft, the first protrusion and the second protrusion are used for cooperating to limit a rotation angle of the first rotating shaft relative to the second rotating shaft. In addition, the lantern ring can also be in friction fit with the shaft sleeve, and when the lantern ring rotates relative to the shaft sleeve, a third torque force can be generated between the lantern ring and the shaft sleeve;

in another possible implementation manner, the first rotating shaft and the second rotating shaft are arranged oppositely; the limiting mechanism may include a limiting member and a rotating member, the limiting member may be disposed on one of the second rotating shaft and the first rotating shaft, correspondingly, the rotating member is disposed on the other of the second rotating shaft and the first rotating shaft, and the positions of the limiting member and the rotating member may be exchanged; an avoiding notch is formed on one side, facing the rotating part, of the limiting part and is used for being matched with the rotating part so as to limit the rotating part to rotate in the first angle relative to the limiting part and further limit the first rotating shaft to rotate in the first angle relative to the second rotating shaft, and when an included angle of the first main body relative to the second main body is smaller than the first angle, only the first rotating shaft rotates relative to the shaft sleeve, and the second rotating shaft is static relative to the shaft sleeve, so that the whole hinge structure only outputs first torsion; when the included angle between the first main body and the second main body is larger than the first angle and smaller than the second angle, the rotation of the first rotating shaft can push the second rotating shaft to rotate together due to the cooperation of the rotating piece and the limiting piece, so that the second rotating shaft can rotate relative to the shaft sleeve (when the shaft sleeve is divided into the first shaft sleeve and the second shaft sleeve, the second rotating shaft rotates relative to the second shaft sleeve) to output a third torsion, and the whole hinge structure outputs the second torsion after the superposition of the first torsion and the third torsion.

Wherein, the locating part can be including the connection terminal surface and certainly the connection terminal surface moves towards the bellied spacing boss of rotating member, the connection terminal surface perpendicular to the rotation axis of rotating member, spacing boss with form between the connection terminal surface dodge the breach. Alternatively, the limiting member may include a connecting end surface and a limiting groove formed on the connecting end surface, the connecting end surface is perpendicular to the rotation axis of the rotating member, and the structure of the limiting groove forms the avoiding gap. The two avoiding notches can form a rotating space for the rotating part to rotate.

When the limiting part is realized by a structure of a connecting end face and a limiting bulge, the section of the limiting boss parallel to the connecting end face can be in a fan shape or an arc shape, and on the basis, the limiting boss can have various deformation structures, for example, an opening can be formed on the limiting boss; in addition, the outer diameter of the limiting boss can be smaller than that of the connecting end face or that of the connecting end face is smaller than that of the second rotating shaft, and shaft shoulders can be formed on the limiting piece through the two structural deformations. When the limiting part is realized by a structure of a connecting end face and a limiting groove, the section of the limiting groove parallel to the connecting end face can also be in a fan shape or an arc shape.

In another possible implementation, the hinge structure may include a first bushing and a second bushing; the first rotating shaft extends into the first shaft sleeve and can rotate around the axis of the first rotating shaft relative to the first shaft sleeve, and the first rotating shaft is in friction fit with the first shaft sleeve when rotating relative to the first shaft sleeve; the second rotating shaft extends into the second shaft sleeve and can rotate around the axis of the second rotating shaft relative to the second shaft sleeve, and the second rotating shaft is matched with the second shaft sleeve when rotating relative to the second shaft sleeve.

In the structure, the first rotating shaft and the second rotating shaft are not in corresponding matching relation, and when an included angle between the first main body and the second main body is smaller than or equal to a first angle in the process of changing the foldable electronic device from a folded state to an opened state, the second rotating shaft is in friction-free rotating matching with the second shaft sleeve; when the included angle between the first main body and the second main body is larger than a first angle and smaller than a second angle, the second rotating shaft and the second shaft sleeve are in friction rotation fit to generate third torsion.

In order to realize the matching between the second rotating shaft and the second shaft sleeve, the second rotating shaft can be provided with a friction part protruding out of the peripheral surface of the second rotating shaft, and the friction part can be in friction fit with the second shaft sleeve; correspondingly, the second shaft sleeve is provided with a groove area capable of accommodating the friction part, and the angle corresponding to the groove area along the direction surrounding the axial lead of the second shaft sleeve is the first angle; specifically, in the process of the foldable electronic device from the folded state to the unfolded state, when an included angle between the first main body and the second main body is smaller than or equal to a first angle, the second rotating shaft rotates relative to the second sleeve, and the friction part is located in the groove area of the second sleeve; when an included angle between the first main body and the second main body is larger than a first angle and smaller than a second angle, the second rotating shaft needs to be in friction rotation fit with the second shaft sleeve, the second rotating shaft rotates relative to the second shaft sleeve, a friction portion of the second rotating shaft is located outside a groove area of the second shaft sleeve, and a friction portion on the second rotating shaft and the second shaft sleeve rub to generate third torsion.

On the other hand, the present application further provides a foldable electronic device, which includes a first body and a second body, in order to realize a foldable function between the first body and the second body, any one of the hinge structures provided in the above technical solutions is disposed between the first body and the second body, specifically, a shaft sleeve of the hinge structure may be connected to the first body, and a first rotating shaft of the hinge structure may be connected to the second body.

Drawings

Fig. 1 is a schematic structural diagram of a foldable electronic device in a folded state;

fig. 2 is a schematic structural diagram of a conventional foldable electronic device in an opened state;

fig. 3 is a schematic structural diagram of a conventional foldable electronic device in an opened state;

FIG. 4 is a diagram illustrating a torque curve of a hinge structure during an opening process of a foldable electronic device according to the prior art;

FIG. 5 is a torque curve diagram of another prior art hinge structure during the opening process of the foldable electronic device;

fig. 6 is a schematic diagram of a torque curve of a hinge structure during an opening process of a foldable electronic device according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a hinge structure according to an embodiment of the present invention;

FIG. 8 is an exploded view of a hinge structure according to an embodiment of the present invention;

fig. 9 is a schematic view illustrating an assembly structure of a bushing and a first rotating shaft of a hinge structure according to an embodiment of the present invention;

fig. 10 is a schematic view of a structure of a stop block of a shaft sleeve of a hinge structure cooperating with a stop block of a first rotating shaft according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram illustrating a matching state of a first rotating shaft and a second rotating shaft of a hinge structure according to an embodiment of the present invention;

fig. 12 is a schematic structural view illustrating a first rotating shaft of a hinge structure rotating relative to a second rotating shaft according to an embodiment of the present invention;

fig. 13 is a schematic structural diagram illustrating another matching state of the first rotating shaft and the second rotating shaft of the hinge structure according to the first embodiment of the invention;

fig. 14 is a structural diagram illustrating a matching state of a first rotating shaft of a hinge structure rotating in a reverse direction relative to a second rotating shaft according to an embodiment of the present invention;

fig. 15 is a structural schematic view of a first rotating shaft of a hinge structure according to an embodiment of the present invention, after the first rotating shaft rotates reversely relative to the second rotating shaft by a first angle;

fig. 16 is a structural diagram illustrating a matching state of a first rotating shaft of a hinge structure rotating in a reverse direction relative to a second rotating shaft according to an embodiment of the present invention;

fig. 17 is a schematic torque curve diagram of a hinge structure during an opening process and a closing process of a foldable electronic device according to an embodiment of the present invention;

fig. 18 is a schematic structural diagram of a limiting member of a hinge structure according to an embodiment of the present invention;

fig. 19 is a schematic structural diagram of a limiting member of a hinge structure according to an embodiment of the invention;

fig. 20 is a schematic structural diagram of a limiting member of a hinge structure according to an embodiment of the invention;

fig. 21 is a schematic structural diagram of a limiting member of a hinge structure according to an embodiment of the invention;

fig. 22 is a schematic structural diagram of a limiting member of a hinge structure according to an embodiment of the invention;

fig. 23 is a schematic structural diagram of a limiting member of a hinge structure according to an embodiment of the invention;

fig. 24 is a schematic structural diagram of a limiting member of a hinge structure according to an embodiment of the present invention;

fig. 25 is a schematic structural diagram of a limiting element of a hinge structure according to an embodiment of the present invention;

fig. 26 is a schematic structural diagram of a limiting element of a hinge structure according to an embodiment of the present invention;

fig. 27 is a schematic structural diagram of a limiting member of a hinge structure according to an embodiment of the invention;

fig. 28 is a schematic structural diagram of a limiting member of a hinge structure according to an embodiment of the invention;

fig. 29 is a schematic structural diagram of a limiting member of a hinge structure according to an embodiment of the invention;

fig. 30 is a schematic structural view of a limiting member of a hinge structure according to an embodiment of the invention;

fig. 31 is a schematic structural diagram of a limiting member of a hinge structure according to an embodiment of the invention;

fig. 32 is a schematic structural diagram of a limiting element of a hinge structure according to an embodiment of the invention;

fig. 33 is a schematic structural diagram of a limiting member of a hinge structure according to an embodiment of the invention;

fig. 34 is a schematic structural diagram of a limiting element of a hinge structure according to an embodiment of the present invention;

fig. 35 is a schematic structural diagram of a limiting element of a hinge structure according to an embodiment of the present invention;

fig. 36 is a schematic structural diagram of a hinge structure according to a second embodiment of the present invention;

fig. 37 is an exploded view of a hinge structure according to a second embodiment of the present invention;

fig. 38 is an exploded view of a hinge structure according to a second embodiment of the present invention;

fig. 39 is a schematic structural diagram of a hinge structure according to a third embodiment of the present invention;

fig. 40 is an exploded view of a hinge structure according to a third embodiment of the present invention;

fig. 41 is a schematic cross-sectional view illustrating the second rotating shaft of the hinge structure matching with the second shaft sleeve according to the fourth embodiment of the present invention;

fig. 42 is a schematic cross-sectional view illustrating the second rotating shaft of the hinge structure matching with the second shaft sleeve according to the fourth embodiment of the present invention;

fig. 43 is a schematic cross-sectional view illustrating the second rotating shaft of the hinge structure matching with the second shaft sleeve according to the fourth embodiment of the present invention;

fig. 44 is a schematic structural diagram of a hinge structure according to a fifth embodiment of the present invention;

fig. 45 is a schematic structural view of a shaft sleeve and a second rotating shaft in a hinge structure according to a fifth embodiment of the present invention;

fig. 46 is a schematic cross-sectional view illustrating a first rotating shaft and a second rotating shaft of a hinge structure according to a fifth embodiment of the present invention;

fig. 47 is a schematic cross-sectional view of a hinge structure according to a sixth embodiment of the present invention;

fig. 48 is a schematic cross-sectional view illustrating a hinge structure according to a seventh embodiment of the present invention;

fig. 49 is a schematic cross-sectional view illustrating a hinge structure according to a seventh embodiment of the present invention;

fig. 50 is a schematic cross-sectional view of a hinge structure according to a seventh embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

The present application provides a foldable electronic device having a foldable function, including a foldable mobile phone, a notebook computer, etc. a foldable electronic device as shown in fig. 1 to 3, including a first body 10 (e.g. a screen of a notebook computer), a second body 20 (e.g. a keyboard base of a notebook computer), and a hinge structure 30 disposed between the first body 10 and the second body 20, one end of the hinge structure 30 being connected to the first body 10, and the other end being connected to the second body 20, the first body 10 being rotatable about the hinge structure 30 relative to the second body 20, under the connecting action of the hinge structure 30, the first body 10 and the second body 20 can assume a change from a folded state to an open state as shown in fig. 1 to 3, the first body 10 and the second body 20 can assume a folded state (as shown in fig. 1, an angle between the first body 10 and the second body 20 is 0 °), when the first body 10 is rotatable about the hinge structure 30 relative to the second body 20, the first body 10 and the second body 20 can assume a change from the folded state to the open state as shown in fig. 1 to the second body 20, the first body 10 and the second body 20 can assume an angle equal to the second body 10, when the first body 10 is equal to the second body 10, the second body 10 is equal to the second body 10, and the second body 20, the angle is equal to the second body 10, and equal to the angle is equal to the second body 10, and equal to the second body 10 is equal to the maximum angle is equal to the angle between.

Taking a notebook computer as an example, a conventional hinge structure includes a shaft and a shaft sleeve, when the shaft rotates and rubs with respect to the shaft sleeve to generate a torque, a curve of the torque is shown in fig. 4 (ignoring a pre-tightening angle of the shaft and the shaft sleeve when the screen is closed with respect to the keyboard base) in a process that the screen is opened with respect to the keyboard base to an included angle of β.

Another hinge structure has a self-locking angle α, wherein the torsion force increases with the increase of the angle when the angle between the screen and the keyboard base is smaller than α during the gradual opening of the screen relative to the keyboard base, and the torsion force remains constant when the angle between the screen and the keyboard base exceeds α, and the torsion force generated by the hinge structure during the opening of the screen relative to the keyboard base from the closing to the opening is plotted in FIG. 5 (ignoring the pre-tightening angle of the hinge structure of the shaft and the shaft sleeve when the screen is closed relative to the keyboard base).

Therefore, the hinge structure described above cannot simultaneously satisfy the requirement of convenience for opening with one hand of a user and the requirement of working stability of the foldable electronic device in the open state.

Based on the above application scenarios, the hinge structure 30 provided in the embodiment of the present application can output different torsion forces during the process of the first body 10 moving from the folded state (the included angle between the first body 10 and the second body 20 is 0 ° as shown in fig. 1) to the opened state (the included angle between the first body 10 and the second body 20 is greater than 0 ° as shown in fig. 2 or 3) relative to the second body 20, so as to meet the requirement of the first body 10 and the second body 20 on torsion forces in the states.

Specifically, referring to the state of the torsion force output from the hinge structure 30 during the process of the first body 10 of the foldable electronic device being folded relative to the second body 20 from the folded state to the unfolded state to the maximum angle therebetween as shown in fig. 6, the ordinate in fig. 6 represents the value of the torsion force generated by the hinge structure 30, the origin O of the abscissa is the folded state of the first body 10 relative to the second body 20, the first angle is set to α (e.g., α is 60 °) when the angle between the first body 10 and the second body 20 is equal to or smaller than the first angle, the range of the first angle is greater than 0 ° and equal to or smaller than α, the first torsion force T1 generated by the hinge structure 30 is smaller in the first angle range, the user can unfold the foldable electronic device with one hand by applying a smaller force to open the first body 10 relative to the second body 20, and the angle between the first body 10 and the second body 20 is greater than the second angle when the angle is greater than the first angle, the second angle is equal to or smaller than the second angle β, the second angle is smaller than the second angle 3528, the second angle is set to be greater than the second angle 35150, the maximum angle, the notebook computer main body 20 is capable of being opened, the notebook computer user can operate the notebook computer with the computer output angle being greater than the notebook computer keyboard 3526, the notebook computer keyboard 3528, the notebook computer.

Next, a detailed description will be given of a specific implementation of the hinge structure 30 provided in the present application by way of a specific embodiment. Of course, the terminology used in the following embodiments is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification of this application and the appended claims, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, such as "one or more", unless the context clearly indicates otherwise.

Furthermore, references to "one embodiment" or "some embodiments" or the like described in this specification mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise.