CN114415785A - Foldable electronic device and angle detection method - Google Patents

Abstract

The application discloses folding electronic equipment and angle detection method relates to electronic equipment technical field, and folding electronic equipment includes: the angle detection device comprises a first shell, a second shell and an angle detection assembly, wherein the first shell is provided with a first rotating shaft assembly; the first shell and the second shell are rotationally connected through a rotating shaft assembly, and the rotating shaft assembly comprises a rotating shaft and a transmission piece which synchronously rotates with the rotating shaft; the angle detection assembly comprises a first rotating piece and an angle detection piece, the first rotating piece is connected with the transmission piece, the first rotating piece rotates synchronously with the rotating shaft through the transmission piece, and the angle detection piece is used for detecting the rotating angle of the first rotating piece. Through the mode, the first rotating part rotates synchronously with the rotating shaft through the transmission part, so that the angle change of the first rotating part can be obtained when the angle detection part detects the angle change of the first rotating part, and the angle change of the first shell and the second shell in a rotating state can be accurately and quickly detected.

Description

Foldable electronic device and angle detection method

Technical Field

The application belongs to the technical field of electronic equipment, and particularly relates to foldable electronic equipment and an angle detection method.

Background

As electronic devices have been developed and become widely available, the inventor found that at least the following technical problems exist in the prior art in the process of implementing the present application: the electronic equipment can obtain a more accurate folding angle only under the static state. If the dynamic folding angle change is detected, a Hall sensor and a magnet are required to be arranged for assistance, so that the number of parts of the whole electronic equipment is increased, and the detection error is large due to the fact that the angle detection process is easy to interfere.

Disclosure of Invention

The present application aims to provide a foldable electronic device and an angle detection method, which are used for solving the technical problem of insufficient accuracy of angle detection in a folded state of the electronic device.

In order to solve the technical problem, the present application is implemented as follows:

in a first aspect, an embodiment of the present application provides a foldable electronic device, including: a first housing;

the first shell and the second shell are in rotary connection through a rotary shaft assembly, and the rotary shaft assembly comprises a rotary shaft and a transmission piece which synchronously rotates with the rotary shaft;

the angle detection assembly comprises a first rotating piece and an angle detection piece, the first rotating piece is connected with the transmission piece, the first rotating piece rotates synchronously with the rotating shaft through the transmission piece, and the angle detection piece is used for detecting the rotating angle of the first rotating piece.

In a second aspect, an embodiment of the present application provides a method for detecting an angle of a foldable electronic device, where the foldable electronic device includes:

judging whether the first shell and the second shell are in folded states;

when the first shell and the second shell are in folded states, the rotation angle of the first rotating member is detected through the angle detecting member, and the folded angles of the first shell and the second shell are determined according to the rotation angle of the first rotating member.

In the embodiment of the application, the first rotating member and the rotating shaft synchronously rotate through the transmission member, so that the change of the rotating angle of the first shell and the second shell can be obtained when the angle detection member detects the change of the angle of the first rotating member, and the change of the angle of the first shell and the second shell in the rotating state can be accurately detected.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a foldable electronic device according to an embodiment of the present invention;

FIG. 2 is a schematic view of a portion of the structure shown in FIG. 1;

FIG. 3 is a view of the exploded structure shown in FIG. 2;

FIG. 4 is an enlarged schematic view of the structure shown at A in FIG. 1;

FIG. 5 is a schematic structural diagram of an embodiment of a rotating member and an angle detecting assembly;

FIG. 6 is a schematic structural diagram of another embodiment of the rotating member and the angle detecting assembly;

FIG. 7 is a schematic structural diagram of a further embodiment of a rotating member and an angle detecting assembly;

FIG. 8 is a schematic view of a distance sensor and cam engagement structure;

fig. 9 is a flowchart of an angle detection method of a foldable electronic device according to an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a fully unfolded state of a foldable electronic device according to an embodiment of the present invention;

FIG. 11 is a schematic view of an angle configuration of a foldable electronic device in a fully folded state according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of another angle of the foldable electronic device in a fully folded state according to the embodiment of the present invention.

Reference numerals:

10. a first housing;

20. a second housing; 210. mounting holes; 220. an inertial measurement unit;

30. a rotating shaft assembly; 310. a rotating shaft; 320. a transmission member; 330. a first rotating shaft assembly; 3310. a first rotating shaft; 3320. a first transmission member; 340. a second spindle assembly; 3410. a second rotating shaft; 3420. a second transmission member; 350. a third transmission member;

40. an angle detection assembly; 410. a first rotating member; 4110. a light penetration region; 4120. a light-reflecting region; 4130. a through hole; 420. an angle detecting member; 430. a third rotating shaft; 440. a first link; 450. a second link; 460. a slider;

50. a direction detection component; 510. a second rotating member; 520. a distance sensor.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The features of the terms first and second in the description and in the claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specified. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

A foldable electronic device according to an embodiment of the present invention is described below with reference to fig. 1-8.

Referring to fig. 1 to 3, the foldable electronic device according to the embodiment of the present invention includes a first housing 10, a second housing 20, and an angle detecting assembly 40, wherein the first housing 10 and the second housing 20 are rotatably connected by a rotating shaft assembly 30, and the rotating shaft assembly 30 includes a rotating shaft 310 and a transmission member 320 that rotates synchronously with the rotating shaft 310. The angle detecting assembly 40 includes a first rotating member 410 and an angle detecting member 420, the first rotating member 410 is connected to the transmission member 320, the first rotating member 410 rotates synchronously with the rotating shaft 310 through the transmission member 320, and the angle detecting member 420 is used for detecting a rotation angle of the first rotating member 410.

The detection of the rotation angle of the first casing 10 and the second casing 20 is performed by an additional angle detection assembly 40. That is, the dynamic rotation process of the first casing 10 and the second casing 20 can be monitored by the angle detection assembly 40, so as to accurately obtain the rotation angle values of the first casing 10 and the second casing 20.

It should be noted that, as for the electronic device, the electronic device includes, but is not limited to, a mobile phone, a tablet, a wearable device, and the like, and the mobile phone is taken as an example herein, but is not limited thereto.

According to some embodiments of the present invention, the first housing 10 and the second housing 20 may be rotatably connected and rotate synchronously with the folding screen electronic device. The first rotating member 410 is connected to the transmission member 320, and rotates synchronously with the rotating shaft 310 through the transmission member 320, so that the angle change of the first rotating member 410 corresponds to the angle change of the first casing 10 and the second casing 20, and the angle detecting member 420 detects the angle change of the first rotating member 410 to obtain the angle change of the first casing 10 and the second casing 20.

For the rotary shaft assembly 30, the rotary shaft assembly 30 includes a first rotary shaft assembly 330 and a second rotary shaft assembly 340. The first housing 10 is provided with a first rotating shaft assembly 330, and the second housing 20 is provided with a second rotating shaft assembly 340. The first spindle assembly 330 includes a first spindle 3310 and a first transmission part 3320 sleeved on the first spindle 3310, and the second spindle assembly 340 includes a second spindle 3410 and a second transmission part 3420 sleeved on the second spindle 3410. The first transmission member 3320 and the second transmission member 3420 are gears. The first transmission member 410 is a gear engaged with the first transmission member 3320 or the second transmission member 3420, the rotation shaft assembly 30 further includes a third transmission member 350, the third transmission member 350 is disposed between the first transmission member 3320 and the second transmission member 3420 and rotates synchronously with the first transmission member 3320 and the second transmission member 3420, and the third transmission member 350 is a gear.

That is, the third transmission member 350 rotates synchronously with the first transmission member 3320 and the second transmission member 3420, the rotation angle of the first transmission member 3320 corresponds to the change of the rotation angle of the first casing 10, the rotation angle of the second transmission member 3420 corresponds to the change of the rotation angle of the second casing 20, and the third transmission member 350 rotates in cooperation with the first transmission member 3320 and the second transmission member 3420, so that the effect of synchronously rotating the first casing 10 and the second casing 20 can be achieved, that is, the first casing 10 is bent, and the second casing 20 is also bent synchronously.

In some embodiments of the present invention, the first casing 10 or the second casing 20 has a mounting hole 210 formed therein, and at least a portion of the first rotating member 410 is located in the mounting hole 210; the angle detector 420 is disposed in the mounting hole 210 and opposite to the first rotating member 410. The mounting hole 210 is illustrated in the second housing 20, but this is by way of example and not by way of limitation.

That is, the display screen is connected to one side of the first casing 10 and the second casing 20, and considering the requirement of the overall thickness of the electronic device, if the first rotating member 410 is disposed in the direction from the first casing 10 to the second casing 20, the thickness of the electronic device is too thick. However, if the first rotating member 410 is provided in the direction from the first casing 10 to the second casing 20, the structure of the display screen on the corresponding side will be affected. For example, the first rotating member 410 is disposed on the first casing 10 side, the first rotating member 410 may occupy a portion of the original position of the display screen, which may cause stress concentration of the display screen at the original position when the display screen is bent, which is not beneficial to long-term use of the display screen, and the second casing 20 side may also leave a portion of space so that the display screen is bent, the stress of the display screen corresponding to the first casing 10 and the second casing 20 side is consistent, which avoids stress concentration, and further causes the support effect of the first casing 10 and the second casing 20 on the display screen to be reduced. In the embodiment of the present application, the mounting holes 210 are formed in the first housing 10 and the second housing 20, so that the mounting space of the original display screen is not occupied, the problem of stress concentration caused by bending of the display screen is avoided, and the electronic device is not additionally thickened.

Referring to fig. 3 to 5, in some embodiments of the present invention, the angle detector 420 is a photo detector; the first rotating member 410 is provided with a light penetration region 4110 and a light reflection region 4120, which are sequentially arranged at intervals, and the photodetector is configured to send a detection signal to the first rotating member 410 and determine a rotation angle of the first rotating member 410 according to a signal reflected by the light reflection region 4120. That is, the detection signal emitted by the photo detector can pass through the light penetration region 4110 without returning to the photo detector, and can return to the photo detector via the light reflection region 4120, so that the rotation angle value of the rotation member can be determined according to the received detection signal. With respect to the first rotating member 410, a third rotating shaft 430 is further provided on the first casing 10 or the second casing 20 at the mounting hole 210 to support and rotatably engage with the first rotating member 410.

For a photodetector, the photodetector may be disposed within the mounting hole 210. The photoelectric detector may be an infrared reflection sensor, a light outlet of the infrared reflection sensor is disposed under or over the rotating member, the infrared reflection sensor emits detection light toward the rotating member, and a signal reflected back by the reflection light is used to obtain the folding angle of the first housing 10 and the second housing 20.

Specifically, the first rotating member 410 is provided with a plurality of through holes 4130, and the through holes 4130 are uniformly arranged around the axial circumference of the first rotating member 410 at intervals; the area corresponding to the through hole 4130 is the light transmitting area 4110, and the area between adjacent through holes 4130 corresponds to the light reflecting area 4120.

The light passing region 4110 can allow the light signal to pass out without a reflected signal, or the reflected signal is much longer than the normal return time. That is, when the light emitted from the infrared reflective sensor passes through the through hole 4130, since the infrared reflective sensor cannot receive the reflected light signal or receives the reflected light signal outside the predetermined time at this time, the data may be recorded as 0. When the light emitted from the infrared reflection sensor is located in the region between the through holes 4130, the reflected light signal can be received within a predetermined time, and the data is recorded as 1. The angle of rotation of the driving member 320 is calculated by measuring the number of pulses returned by the infrared reflective sensor. For example, if 10 through holes 4130 are provided in the transmission member 320, one pulse may represent 18 °. It should be noted that the accuracy of the rotation angle is related to the number of the through holes 4130, for example, more through holes 4130 may be provided to obtain a more accurate angle variation value.

Referring to fig. 2, 4 and 6, in still other embodiments of the present invention, the transmission member 320 is a gear sleeved on the rotating shaft 310, and the first rotating member 410 is a gear engaged with the transmission member 320; the angle detecting member 420 is a rack engaged with the first rotating member 410; in the state that the first rotating member 410 is rotated, the folding angles of the first and second housings 10 and 20 are determined according to the moving distance of the rack.

That is, in the rotating process of the first rotating member 410, the rack is driven to move, and the rotating angle of the first rotating member 410 can be obtained by detecting the moving distance of the rack. For the rack, it may be disposed in the mounting hole 210, and a displacement sensor may be disposed in the mounting hole 210 at the same time for detecting the displacement of the rack. For example, a displacement sensor may be disposed on a side of the rack away from the first transmission 3320, and the displacement sensor may detect the displacement of the rack, so as to obtain the rotation angle of the first rotating member 410.

Referring to fig. 2, 4 and 7, in still other embodiments of the present invention, the angle detecting member 420 may also be a crank mechanism. Specifically, the angle detecting member 420 includes a first link 440 connected to the first rotating member 410, a second link 450 rotatably connected to the first link 440, and a slider 460 connected to the second link 450, and determines the rotation angles of the first transmission member 3320 and the second transmission member 3420 according to the moving distance of the slider 460, thereby obtaining the folding angles of the first casing 10 and the second casing 20. The sliding block 460 can move along the sliding rail, and the first rotating member 410 drives the first connecting rod 440 and the second connecting rod 450 to rotate during the rotation process, so as to push the sliding block 460 to slide along the sliding rail, and the rotation angle of the first rotating member 410 is obtained by calculating the sliding distance of the sliding block 460.

The first link 440 and the second link 450 may be pivotally connected by a pin, or may be pivotally connected by another pivot structure, which is not limited herein. The sliding block 460 can slide along the sliding rail, so that the rotation angle value of the first rotating member 410 can be determined through calculation of the moving distance of the sliding block 460.

The distance of the sliding block 460 can be detected by a displacement sensor, which can be disposed in the mounting hole 210 and faces one end of the sliding block 460 away from the first rotating member 410, and the rotation angle of the first rotating member 410 can be obtained by detecting the moving displacement of the sliding block 460.

Referring to fig. 2, 4 and 8, in some embodiments of the present invention, the direction detecting assembly 50 further includes a second rotating member 510, the second rotating member 510 is connected to the rotating shaft 310, and the second rotating member 510 and the rotating shaft 310 rotate synchronously to determine the bending direction of the first housing 10 and the second housing 20.

Specifically, the second rotating member 510 is a cam; the direction detecting assembly 50 further includes a distance sensor 520, a light emitting side of the distance sensor 520 faces the circumferential side surface of the cam; the distance between the distance sensor 520 and the circumferential side surface of the cam increases or decreases as the cam rotates along with the rotating shaft 310, and the bending direction of the first housing 10 and the second housing 20 is determined according to the trend of the distance between the distance sensor 520 and the circumferential side surface of the cam.

Regarding the position of the distance sensor 520, the distance sensor 520 is located in the mounting hole 210 and is connected to the first casing 10 or the second casing 20.

That is, the first housing 10 and the second housing 20 are bent at an included angle of 180 degrees toward an included angle of 0 degree during the rotation process, i.e., in a combined state. The other is bent at 0-180 degrees, namely in an unfolded state. The second rotating member 510 functions to detect the bent state of the first and second housings 10 and 20.

Specifically, the electronic device may set different display states at different bending angles, for example, once the angle between the first casing 10 and the second casing 20 is smaller than 60 degrees during the bending process, the display screen is automatically turned off to achieve the power saving effect. Or once the electronic equipment is unfolded from 0 degree to 60 degrees, the display screen is automatically lightened, so that a user can know the information displayed on the electronic equipment without completely unfolding, and the information acquisition efficiency is higher. The specific implementation scenarios are merely exemplary and not limiting.

For the bending tendency of the electronic device, for example, the current folding angle of the first casing 10 and the second casing 20 is 90 degrees, and then the next folding angle may be changed to be folded toward 0 to 90 degrees, or may be changed to be folded toward 90 to 180 degrees. In some embodiments of the present invention, the distance from the distance sensor 520 to the side of the cam is continuously variable, either smaller or larger, as the cam rotates. For example, the angle between the first casing 10 and the second casing 20 in the initial state may be set to 0 degree, and the angle in the final state may be set to 180 degrees. The distance between the cam side and the distance sensor 520 may be minimized at 0 degrees, and as the first and second housings 10 and 20 are unfolded, the cam rotates and increases the distance from the distance sensor 520 to the cam side until the fully unfolded state is reached, at which the cam side is farthest from the distance sensor 520. When the angle detected by the distance sensor 520 is reduced, the first casing 10 and the second casing 20 are folded toward 0 degree; when the angle detected by the distance sensor 520 is increased, the first casing 10 and the second casing 20 are folded in the direction of the angle, so that the rotating tendency of the first casing 10 and the second casing 20 can be obtained according to the change of the distance from the cam side to the distance sensor 520.

Further, at least one Inertial Measurement Unit (IMU) 220 is further disposed on each of the first casing 10 and the second casing 20, so as to detect an angle between the first casing 10 and the second casing 20 when the electronic device is in a static state. Interaction of various implementation scenarios with a display screen or other components may be achieved in conjunction with the distance sensor 520 and angle detection element 420 described above. For example, the specific operation scene may be, for example, only by way of example and not by way of limitation, when the folding angle is 30 degrees, 60 degrees, 90 degrees, 120 degrees, and the like, for example, when the mobile terminal is turned on at 30 degrees, the display screen corresponding to the first casing 10 displays content at 60 degrees, and the display screens corresponding to the first casing 10 and the second casing 20 display content at 90 degrees.

Referring to fig. 9, an embodiment of the present invention further provides a method for detecting an angle of a foldable electronic device, where the foldable electronic device includes:

and S110, judging whether the first shell and the second shell are in a folded state.

The first and second housings include a detection of the static angle, i.e. by an Inertial Measurement Unit (IMU) on the first and second housings, from which the static angle of the first and second housings is derived. When the first shell and the second shell are in the folded state, the inertial measurement unit cannot obtain the rotation angle of the first shell and the second shell in real time.

And S120, when the first shell and the second shell are in the folded state, detecting the rotating angle of the first rotating member through the angle detecting member, and determining the folding angle of the first shell and the second shell according to the rotating angle of the first rotating member.

For the detection of the folded states of the first housing and the second housing, in some embodiments of the present invention, an initial value of the electronic device may be recorded first, for example, when the electronic device is in a fully folded state or a fully unfolded state before shipping, the initial value is defined as 0 degree or 180 degrees. When a user takes the electronic product and folds the electronic product, the rotation angles of the first shell and the second shell are determined through the first rotating piece and the angle detection piece.

Further, the turning tendency of the first housing and the second housing may be determined simultaneously by the change in the distance from the cam by the distance sensor to determine whether the electronic apparatus is bent from the current state toward the fully folded state or the fully unfolded state. Specifically, fig. 10 to 12 can be referred to for various bending states of the electronic device. Fig. 10 shows a fully unfolded state of the electronic device, and fig. 11 and 12 show a fully folded state of the electronic device, wherein the electronic device reciprocates corresponding to the fully folded to fully unfolded state during use. Because distance sensor and angle detection piece can detect the turned angle and the trend of rotation of first casing and second casing, can accomplish the interaction of multiple implementation scenarios so. For example, the specific operation scene, which is a specific operation scene, may be, for example, only by way of example and not by way of limitation, a distance sensor that detects that the user bends from the folded state to the unfolded state, and corresponds to different operations such as folding angles of 30 degrees, 60 degrees, 90 degrees, and 120 degrees, for example, turning on at 30 degrees, displaying content on one display screen at 60 degrees, displaying content on both display screens at 90 degrees, and the like.

In some embodiments of the present invention, the number of IMUs is two (refer to fig. 1) and are respectively provided on the first and second housings. When the initial value of the electronic device is not recorded before the electronic device leaves the factory, the initial value can be reset by the IMU when the electronic device is static and in a fully folded or unfolded state. Furthermore, when the electronic device is in a stationary state after rotating, the included angle between the first shell and the second shell can be detected through the IMU, and then compared with the included angle detected by the first rotating part and the angle detecting part, so that the folding angle of the dual-IMU detection electronic device in the stationary state can be used as a calibration value. And if the detection result of the angle detection assembly is abnormal, the initial value can be determined again through the double IMUs, and then angle detection is carried out.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A foldable electronic device, comprising:

a first housing;

the first shell and the second shell are in rotary connection through a rotary shaft assembly, and the rotary shaft assembly comprises a rotary shaft and a transmission piece which synchronously rotates with the rotary shaft;

the angle detection assembly comprises a first rotating piece and an angle detection piece, the first rotating piece is connected with the transmission piece, the first rotating piece rotates synchronously with the rotating shaft through the transmission piece, and the angle detection piece is used for detecting the rotating angle of the first rotating piece.

2. The foldable electronic device of claim 1, wherein the hinge assembly comprises a first hinge assembly and a second hinge assembly;

the first rotating shaft assembly is arranged on the first shell, and the second rotating shaft assembly is arranged on the second shell;

the first rotating shaft assembly comprises a first rotating shaft and a first transmission piece sleeved on the first rotating shaft, and the second rotating shaft assembly comprises a second rotating shaft and a second transmission piece sleeved on the second rotating shaft; the first transmission piece and the second transmission piece are gears;

the first rotating part is a gear meshed with the first driving part or the second driving part, the rotating shaft assembly further comprises a third driving part, the third driving part is arranged between the first driving part and the second driving part and rotates synchronously with the first driving part and the second driving part, and the third driving part is a gear.

3. The foldable electronic device of claim 1, wherein the first housing or the second housing has a mounting hole, and at least a portion of the first rotating member is located in the mounting hole;

the angle detection piece is arranged in the mounting hole and is opposite to the first rotating piece.

4. The foldable electronic device of claim 1, wherein the angle detector is a photodetector;

the photoelectric detector is used for sending detection signals to the first rotating member and determining the rotating angle of the first rotating member according to the signals reflected by the light reflection region.

5. The foldable electronic device of claim 4, wherein the first rotating member has a plurality of through holes formed therein, the through holes being evenly spaced around an axial circumference of the first rotating member;

the area corresponding to the through holes is the light penetration area, and the area between the adjacent through holes corresponds to the light reflection area.

6. The foldable electronic device of claim 1, wherein the transmission member is a gear sleeved on the rotation shaft, and the first rotation member is a gear engaged with the transmission member; the angle detection piece is a rack meshed with the first rotating piece;

and under the rotating state of the first rotating piece, determining the folding angle of the first shell and the second shell according to the moving distance of the rack.

7. The foldable electronic device of claim 1, further comprising a direction detection assembly, wherein the direction detection assembly comprises a second rotating member, the second rotating member is connected to the rotating shaft, and the second rotating member rotates synchronously with the rotating shaft to determine the bending direction of the first housing and the second housing.

8. The foldable electronic device of claim 7, wherein the second rotating member is a cam;

the direction detection assembly further comprises a distance sensor, and the light emitting side of the distance sensor faces the peripheral side face of the cam; and in the process that the cam rotates along with the rotating shaft, the distance between the distance sensor and the peripheral side surface of the cam is gradually increased or decreased, and the bending direction of the first shell and the second shell is determined according to the change trend of the distance between the distance sensor and the peripheral side surface of the cam.

9. The foldable electronic device of claim 8, wherein the first housing or the second housing has a mounting hole;

the distance sensor is located in the mounting hole and connected with the first shell or the second shell.

10. A method for detecting an angle of a foldable electronic device, the foldable electronic device of any one of claims 1-9 being used, the method comprising:

judging whether the first shell and the second shell are in folded states;

when the first shell and the second shell are in folded states, the rotation angle of the first rotating member is detected through the angle detecting member, and the folded angles of the first shell and the second shell are determined according to the rotation angle of the first rotating member.

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