Shell assembly and opening and closing angle detection method thereof, and foldable electronic device

Abstract

The present application provides a shell assembly and a method for detecting the opening and closing angles thereof, and a foldable electronic device. The shell assembly is provided with a detection device in a first shell, and at least one magnetic component is provided in a second shell, and a conversion device is provided to be electrically connected to the detection device. The magnetic field strength generated by the magnetic component is detected by the detection device, and the signal of the magnetic field strength detected by the detection device can be transmitted to the conversion device, and the conversion device converts the magnetic field strength into a corresponding opening and closing angle to detect the opening and closing angle of the shell assembly. In this way, the opening and closing angle of the shell assembly can be detected by only using the magnetic component, the detection device and the conversion device. The structure is simple and easy to install, which can reduce the production cost of the foldable electronic device, improve the production efficiency of the foldable electronic device, and is conducive to the layout design of the shell assembly, which helps the thin and light design of the foldable electronic device.

Description

Technical Field

[0001] The present application relates to the field of electronic devices, and in particular to a housing assembly and a method for detecting an opening and closing angle thereof, and a foldable electronic device. Background Art

[0002] Folding screens have the property of being bendable, so that electronic devices equipped with folding screens, i.e. foldable electronic devices, can switch between an unfolded state and a folded state. Foldable electronic devices have a large display area and are easy to carry, and are increasingly favored by consumers.

[0003] During the use of foldable electronic devices, the opening and closing angles are usually detected to control the electronic devices accordingly. In the related art, electronic devices need to be equipped with complex angle detection mechanisms to specifically detect the opening and closing angles, which increases the production cost of electronic devices and reduces the production efficiency of electronic devices. In addition, the angle detection mechanism occupies a large space, which is not conducive to the layout design of electronic devices. Summary of the invention

[0004] The present application provides a shell assembly and an opening and closing angle detection method thereof, and a foldable electronic device to solve the problems of high production cost, low production efficiency, and unreasonable layout design of electronic devices due to the need to configure a complex angle detection mechanism.

[0005] A first aspect of the present application provides a housing assembly, including a first housing, a second housing, a detection device, a conversion device, and at least one magnetic device;

[0006] The first shell is rotatably connected to the second shell, the detection device is arranged in the first shell, the at least one magnetic member includes a magnetic member arranged in the second shell, the conversion device is arranged in the first shell or in the second shell, and the conversion device is electrically connected to the detection device;

[0007] The detection device detects the magnetic field strength generated by the magnetic component, and the conversion device converts the magnetic field strength into a corresponding opening and closing angle; wherein the opening and closing angle is the rotation angle of the second shell relative to the first shell.

[0008] The shell assembly provided by the present application is provided with a detection device, a conversion device and at least one magnetic component, the detection device is provided in the first shell, and at least one magnetic component is provided in the second shell, and the conversion device is electrically connected to the detection device. The magnetic field strength generated by the magnetic component is detected by the detection device, and the signal of the magnetic field strength detected by the detection device can be transmitted to the conversion device, and the conversion device converts the magnetic field strength into a corresponding opening and closing angle to detect the opening and closing angle of the shell assembly. In this way, the opening and closing angle of the shell assembly can be detected by only using the magnetic component, the detection device and the conversion device. The structure is simple and easy to install, which can reduce the production cost of the foldable electronic device, improve the production efficiency of the foldable electronic device, and is conducive to the layout design of the shell assembly, which helps the thin and light design of the foldable electronic device.

[0009] In a possible implementation manner, two poles of the magnetic member are arranged along the thickness direction of the shell assembly.

[0010] In a possible implementation, two poles of the magnetic member are arranged along a plane direction of the shell assembly.

[0011] In a possible implementation, the at least one magnetic member includes a first magnetic member and a second magnetic member, the first magnetic member is disposed in the first shell, and the second magnetic member is disposed in the second shell;

[0012] A magnetic attraction force is generated between the first magnetic component and the second magnetic component, and the detection device is located on a side of the first magnetic component facing the second magnetic component.

[0013] By setting the first magnetic component in the first shell and the second magnetic component in the second shell, the magnetic field strength generated between the first magnetic component and the second magnetic component is relatively large. The detection device is set between the first magnetic component and the second magnetic component. During the rotation of the second shell relative to the first shell, the change in the magnetic field strength detected by the detection device is also more obvious, and the magnetic field strength can be converted into the corresponding opening and closing angle more accurately.

[0014] By generating a magnetic attraction force between the first magnetic component and the second magnetic component, the magnetic field strength between the first magnetic component and the second magnetic component and the distance between the two components are in a monotonic linear relationship. In this way, the magnetic field strength detected by the detection device and the opening and closing angle of the shell component conform to a monotonic linear relationship, and the corresponding relationship between the magnetic field strength and the opening and closing angle is unique, and the opening and closing angle can be accurately determined according to the magnetic field strength.

[0015] In a possible embodiment, when the first shell and the second shell are stacked relative to each other, the magnetic pole of one of the first magnetic component and the second magnetic component facing each other is the south pole and the magnetic pole away from each other is the north pole, and the magnetic pole of the other one facing each other is the north pole and the magnetic pole away from each other is the south pole.

[0016] In a possible implementation, when the first shell and the second shell are relatively stacked, along a first direction within the plane where the shell components are located, the first magnetic member is sequentially arranged with a south pole and a north pole, and the second magnetic member is sequentially arranged with a north pole and a south pole.

[0017] In a possible implementation, the first direction is an extension direction of a side edge of the housing assembly.

[0018] In a possible implementation, both the first magnetic component and the second magnetic component are permanent magnetic components, or at least one of the first magnetic component and the second magnetic component is an electromagnetic component.

[0019] In a possible implementation, when the first shell and the second shell are relatively stacked, the detection device is located on a line between the first magnetic component and the second magnetic component.

[0020] Due to the magnetic attraction between the first magnetic component and the second magnetic component, the magnetic field between the first magnetic component and the second magnetic component has the largest magnetic flux density and the strongest magnetic field strength on the line (straight line) between the two. By setting the detection device on the line between the first magnetic component and the second magnetic component, the magnetic flux density and the magnetic field strength at the location of the detection device are large, and the magnetic field strength detected by the detection device is large. As the opening and closing angle of the shell assembly changes, the magnetic field strength detected by the detection device changes significantly, which can improve the reliability and sensitivity of the detection device.

[0021] In a possible implementation, when the first shell and the second shell are relatively stacked, the first magnetic member and the second magnetic member are arranged opposite to each other, and the detection device is located within the coverage area of ​​the orthographic projection of the first magnetic member.

[0022] By arranging the first magnetic member and the second magnetic member opposite to each other, the distance between the first magnetic member and the second magnetic member is minimized, and the magnetic field strength generated between the two is maximized. In addition, by arranging the detection device opposite to the first magnetic member, the detection device can detect a larger magnetic field strength, and can more accurately correspond the magnetic field strength to the opening and closing angle.

[0023] In a possible implementation, when the first shell and the second shell are stacked relatively to each other, the second magnetic member is attached to an inner wall of the second shell on one side facing the first shell.

[0024] By attaching the second magnetic component to the inner wall of the second shell facing the first shell, the distance between the second magnetic component and the first magnetic component (detection device) is shortened, and the magnetic field strength at the location of the detection device is stronger, which can improve the sensitivity of the detection device in detecting the magnetic field strength and improve the accuracy of the opening and closing angle detection.

[0025] In a possible implementation, when the first shell and the second shell are stacked relative to each other, the first magnetic member is attached to an inner wall of a side of the first shell facing away from the second shell.

[0026] In a possible implementation manner, a first circuit board is further disposed in the first housing, and the detection device is disposed on the first circuit board.

[0027] By arranging the detection device on the first circuit board in the first housing, the first circuit board can provide electrical signals for the detection device and can serve as a bridge for transmitting signals between the detection device and other devices to control the operation of the detection device.

[0028] In a possible implementation, the detection device includes a magnetoresistive sensor or a Hall sensor.

[0029] By setting a magnetoresistive sensor as a detection device, the resistance value of the self-sufficient sensor will change with the size of the external magnetic field, so as to detect the magnetic field strength generated by the magnetic part at its location. By setting a Hall sensor as a detection device, the Hall voltage output by it is linearly related to the magnetic field strength of the external magnetic field, so as to detect the magnetic field strength generated by the magnetic part at its location.

[0030] In a possible implementation, the housing assembly further includes a rotating shaft, which is connected between the first housing and the second housing, and the first housing and the second housing rotate relatively around the rotating shaft.

[0031] A second aspect of the present application provides a method for detecting an opening and closing angle of a housing assembly, which is applied to the housing assembly as described above. The method for detecting an opening and closing angle includes:

[0032] Detecting the magnetic field strength generated by the magnetic parts in the housing assembly;

[0033] The opening and closing angle of the shell assembly is obtained according to the magnetic field strength; wherein the opening and closing angle is the rotation angle of the second shell relative to the first shell.

[0034] The present application provides a method for detecting the opening and closing angle of a shell component, in which a detection device detects the magnetic field strength generated by a magnetic component, and the signal of the magnetic field strength detected by the detection device can be transmitted to a conversion device, and the conversion device converts the magnetic field strength into a corresponding opening and closing angle to detect the opening and closing angle of the shell component. As the opening and closing angle of the shell component gradually increases, the magnetic field strength detected by the detection device gradually decreases, and the magnetic field strength and the opening and closing angle conform to a monotonic linear relationship, and the two are in a one-to-one correspondence. Therefore, a unique and accurate opening and closing angle can be obtained according to the magnetic field strength detected by the detection device.

[0035] In a possible implementation, obtaining the opening and closing angle of the housing assembly according to the magnetic field strength includes:

[0036] When the opening angle is ≥0° and ≤90°, according to α=Am 2 +Bm+C calculates the opening and closing angle;

[0037] When the opening and closing angle is greater than 90° and less than or equal to 180°, the opening and closing angle is calculated according to α=Dm+E;

[0038] Among them, α is the opening and closing angle, m is the magnetic field intensity, and A, B, C, D, and E are all constants.

[0039] A third aspect of the present application provides a foldable electronic device, comprising a foldable screen and a shell assembly as described above, wherein the foldable screen is mounted on the shell assembly.

[0040] The foldable electronic device provided by the present application includes a shell component and a folding screen mounted on the shell component. The shell component is provided with a detection device, a conversion device and at least one magnetic component, the detection device is arranged in the first shell, and at least one magnetic component is arranged in the second shell, and the conversion device is electrically connected to the detection device. The magnetic field strength generated by the magnetic component is detected by the detection device, and the signal of the magnetic field strength detected by the detection device can be transmitted to the conversion device, and the conversion device converts the magnetic field strength into a corresponding opening and closing angle to realize the detection of the opening and closing angle of the shell component. In this way, the opening and closing angle of the shell component can be detected by only using the magnetic component, the detection device and the conversion device. The structure is simple and easy to install, which can reduce the production cost of the foldable electronic device, improve the production efficiency of the foldable electronic device, and is conducive to the layout design of the shell component, which is conducive to the thin and light design of the foldable electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 A schematic diagram of the structure of a foldable electronic device provided in an embodiment of the present application when in an unfolded state;

[0042] Figure 2 for Figure 1 A schematic diagram of the structure of the foldable electronic device shown in FIG. 1 when the foldable electronic device is in a folded state;

[0043] Figure 3 for Figure 1 A schematic diagram of the structure of the foldable electronic device in a semi-expanded state;

[0044] Figure 4 A schematic diagram of the exploded structure of a foldable electronic device provided in an embodiment of the present application;

[0045] Figure 5 A schematic cross-sectional view of a housing assembly provided in an embodiment of the present application;

[0046] Figure 6 A schematic cross-sectional view of another housing assembly provided in an embodiment of the present application;

[0047] Figure 7 A schematic diagram of the layout of a magnetic component provided in an embodiment of the present application;

[0048] Figure 8 A schematic diagram of another arrangement of magnetic components provided in an embodiment of the present application;

[0049] Fig. 9 A flowchart of the opening and closing angle detection method provided in an embodiment of the present application;

[0050] Fig.10 This is a simulation curve diagram of the magnetic field strength and the opening and closing angle provided in this embodiment.

[0051] Description of reference numerals:

[0052] 10- Foldable electronic devices;

[0053] 100-housing assembly; 101-middle frame; 102-back cover;

[0054] 110 - first housing; 120 - second housing; 130 - rotating shaft; 140 - magnetic member;

[0055] 111 - detection device; 112 - first circuit board; 141 - first magnetic member; 142 - second magnetic member;

[0056] 200-folding screen;

[0057] 210-first non-bending portion; 220-second non-bending portion; 230-bending portion;

[0058] 300-bar screen. DETAILED DESCRIPTION

[0059] The terms used in the implementation section of this application are only used to explain the specific embodiments of this application and are not intended to limit this application.

[0060] The embodiment of the present application provides a foldable electronic device, which includes but is not limited to foldable electronic products such as mobile phones, tablet personal computers, laptop computers, notebook computers, personal digital assistants (PDAs), personal computers, multimedia players, e-book readers, vehicle-mounted devices or wearable devices. Among them, wearable devices include but are not limited to smart bracelets, smart watches, smart head-mounted displays, smart glasses, etc.

[0061] Figure 1A schematic diagram of the structure of a foldable electronic device provided in an embodiment of the present application when in an unfolded state; Figure 2 for Figure 1 A schematic diagram of the structure of the foldable electronic device shown in FIG. 1 when the foldable electronic device is in a folded state; Figure 3 for Figure 1 Schematic diagram of the structure of the foldable electronic device in a semi-expanded state.

[0062] Reference Figures 1 to 3 As shown, this embodiment takes the foldable electronic device 10 as a foldable mobile phone as an example for description.

[0063] For the foldable electronic device 10, in different usage scenarios, the foldable electronic device 10 may have different usage states. Figure 1 The foldable electronic device 10 is shown in an unfolded state, and the unfolding angle α of the foldable electronic device 10 is, for example, 180°. At this time, the foldable electronic device 10 can realize a large-screen display; Figure 2 The foldable electronic device 10 is shown in a folded state. At this time, the foldable electronic device 10 is small in size and easy to carry; Figure 3 The foldable electronic device 10 is shown in a semi-expanded state. At this time, the foldable electronic device 10 is suspended at a certain angle between the expanded state and the folded state. Exemplarily, the suspension angle β of the foldable electronic device 10 can be 120°, 130°, 140° or 150°, etc.

[0064] It should be noted that the angles described in this embodiment are allowed to have a slight deviation. Figure 1 The unfolding angle α of the foldable electronic device 10 shown is 180°, which means that the unfolding angle α can be 180°, or about 180°, such as 170°, 175°, 185° or 190°, etc. The angles exemplified below can be understood in the same way.

[0065] in addition, Figures 1 to 3 The foldable electronic device 10 shown in the figure is an electronic device that can be folded once. The electronic device includes two parts that can rotate relative to each other. When the two parts rotate to be coplanar, the foldable electronic device 10 is in an unfolded state (such as Figure 1 When the two parts are rotated to overlap each other, the foldable electronic device 10 is in a folded state (as shown in FIG. Figure 2 When the two parts rotate to a certain angle between the unfolded state and the folded state, the foldable electronic device 10 is in a semi-expanded state (as shown in FIG. Figure 3 shown).

[0066] In other embodiments, the foldable electronic device 10 may also be an electronic device that can be folded more than twice. In this case, the foldable electronic device 10 may include multiple parts that are connected and rotated in sequence. Two adjacent parts can be relatively far apart to be unfolded to an unfolded state, and two adjacent parts can be relatively close to be folded to a folded state.

[0067] Figure 4 This is a schematic diagram of the exploded structure of a foldable electronic device provided in an embodiment of the present application. Figure 3 As shown, the foldable electronic device 10 includes a housing assembly 100 and a folding screen 200, the folding screen 200 is supported and connected to one side surface of the housing assembly 100, and the side surface of the folding screen 200 facing away from the housing assembly 100 is its display surface (not shown in the figure), and the display surface is used to display information and provide an interactive interface for the user. In this embodiment, the display surface of the folding screen 200 is defined as its front side, and the other side surface of the folding screen 200 opposite to the front side is defined as its back side, that is, the front side of the folding screen 200 is exposed outside the housing assembly 100, and the back side of the folding screen 200 faces the housing assembly 100 and is connected to the housing assembly 100. Accordingly, the side surface of the housing assembly 100 facing the folding screen 200 is defined as the front side of the housing assembly 100, and the side surface of the housing assembly 100 facing away from the folding screen 200 is defined as the back side of the housing assembly 100.

[0068] In this embodiment, the folding screen 200 can be but is not limited to an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode or an active-matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode (miniorganic light-emitting diode) display screen, a micro organic light-emitting diode (micro organic light-emitting diode) display screen, a micro organic light-emitting diode (micro organic light-emitting diode) display screen, or a quantum dot light emitting diode (quantum dot light emitting diodes, QLED) display screen, etc.

[0069] The folding screen 200 may include a first non-bending portion 210, a second non-bending portion 220 and a bendable portion 230, wherein the bendable portion 230 is located between the first non-bending portion 210 and the second non-bending portion 220. During use of the foldable electronic device 10, the first non-bending portion 210 and the second non-bending portion 220 always maintain a planar state, while the bendable portion 230 may be bent to change the angle between the first non-bending portion 210 and the second non-bending portion 220, so that the folding screen 200 is folded or unfolded with the movement of the housing assembly 100, so as to realize the switching of the foldable electronic device 10 between the folded state and the unfolded state.

[0070] For example, in the folding screen 200, at least the bendable portion 230 is made of a flexible material so that the bendable portion 230 is bendable. The first non-bending portion 210 and the second non-bending portion 220 can be made of a flexible material, or a rigid material, or partially made of a rigid material and partially made of a flexible material, which is not limited in this embodiment.

[0071] Driven by the housing assembly 100, the folding screen 200 can switch between the unfolded state and the folded state. Figure 1 and Figure 4 As shown, when the folding screen 200 is in the unfolded state, the first non-bending portion 210 and the second non-bending portion 220 are in a relatively far unfolded state, the bendable portion 230 is in a flattened state without bending, and the first non-bending portion 210, the second non-bending portion 220 and the bendable portion 230 face the same direction and are in a coplanar state. At this time, the angle between the first non-bending portion 210 and the second non-bending portion 220 is 180°, and the folding screen 200 can achieve a large-screen display, which can provide users with richer information and bring users a better user experience.

[0072] Combination Figure 2 and Figure 4 As shown, when the folding screen 200 is in the folded state, the first non-bending portion 210 and the second non-bending portion 220 are relatively stacked, and the bendable portion 230 is in a bent state, and the bending angle of the bendable portion 230 is, for example, 180°. At this time, the foldable electronic device 10 is small in size and easy to carry and store.

[0073] It should be noted that this embodiment takes the foldable electronic device 10 as an inward-folding electronic device as an example. When the foldable electronic device 10 is in the folded state, the first non-bending portion 210 and the second non-bending portion 220 of the folding screen 200 are relatively fitted, the bendable portion 230 is in the bent state, and the housing assembly 100 is protected outside the folding screen 200 to prevent the folding screen 200 from being scratched by hard objects. Figure 2 or Figure 3As shown, if the inward-folding electronic device needs to realize the display function in the folded state, a straight screen 300 can be added to the back of the shell, and the foldable electronic device 10 relies on the straight screen 300 to realize the display function in the folded state.

[0074] In other words, the inward-folding electronic device may include a folding screen 200 and a straight screen 300. The folding screen 200 may be mounted on the front of the housing assembly 100. With the movement of the housing assembly 100, the folding screen 200 may switch between the unfolded state and the folded state. When the foldable electronic device 10 is in the folded state, the folding screen 200 is not visible to the outside. The straight screen 300 may be mounted on the back of the housing assembly 100. The straight screen 300 is displayed when the foldable electronic device 10 is in the folded state.

[0075] In other examples, the foldable electronic device 10 may also be an external folding electronic device. When the foldable electronic device 10 is in the folded state, the first non-bending portion 210 and the second non-bending portion 220 of the folding screen 200 are opposite to each other, the housing assembly 100 is located between the first non-bending portion 210 and the second non-bending portion 220, and the folding screen 200 is surrounded outside the housing assembly 100 and is visible to the user. When the external folding electronic device is in the folded state, the folding screen 200 is exposed to the outside, and the folding screen 200 can be used to realize the display function. Therefore, there is no need to add an additional straight screen 300 on the back of the housing in order to realize the display function of the foldable electronic device 10 in the folded state.

[0076] In addition, in some embodiments, the foldable electronic device 10, especially the inward-folding electronic device, can be suspended at a certain angle between the unfolded state and the folded state. For example, the hovering angle of the foldable electronic device 10 can be 120°, 130°, 140° or 150°, etc. Among them, the housing assembly 100 can be suspended in a semi-expanded state between the folded state and the unfolded state by relying on the damping force provided by the housing assembly 100, and the folding screen 200 stays in the semi-expanded state with the housing assembly 100. At this time, the bendable portion 230 of the folding screen 200 is also in a bent state, and the bending degree of the bendable portion 230 is less than the bending degree when in the folded state, and the first non-bending portion 210 and the second non-bending portion 220 of the folding screen 200 are relatively inclined, and the angle between the first non-bending portion 210 and the second non-bending portion 220 is, for example, 120°, 130°, 140° or 150°, etc.

[0077] The housing assembly 100 is used to support and fix the folding screen 200, and drive the folding screen 200 to switch between the folded state and the unfolded state. Figure 3As shown, the shell assembly 100 includes a first shell 110, a second shell 120 and a rotating shaft 130. The rotating shaft 130 is connected between the first shell 110 and the second shell 120. The first shell 110 and the second shell 120 are rotatably connected through the rotating shaft 130, thereby realizing relative rotation between the first shell 110 and the second shell 120.

[0078] Among them, the first housing 110 supports and fixes the first non-bending portion 210 of the folding screen 200, and the second housing 120 supports and fixes the second non-bending portion 220 of the folding screen 200. In other words, the first non-bending portion 210 of the folding screen 200 is fixedly connected to the first housing 110, and the second non-bending portion 220 of the folding screen 200 is fixedly connected to the second housing 120. The bendable portion 230 of the folding screen 200 is arranged corresponding to the rotating shaft 130. When the rotating shaft 130 drives the first housing 110 and the second housing 120 to rotate relative to each other, the first non-bending portion 210 and the second non-bending portion 220 of the folding screen 200 change their orientations accordingly, and the bendable portion 230 of the folding screen 200 bends or flattens as the orientations of the first non-bending portion 210 and the second non-bending portion 220 change.

[0079] The rotating shaft 130 drives the first shell 110 and the second shell 120 to rotate relative to each other, so that the foldable electronic device 10 switches between the folded state and the unfolded state. The first shell 110 and the second shell 120 can rotate in a direction away from each other until they are coplanar. At this time, the shell assembly 100 is in the unfolded state, and the folding screen 200 is in the unfolded state as the shell assembly 100 is unfolded. Figure 1 As shown; the first shell 110 and the second shell 120 can also be rotated in a direction close to each other until the two are relatively stacked. At this time, the shell assembly 100 is in a folded state, and the folding screen 200 is in a folded state along with the folding of the shell assembly 100, as shown Figure 2 shown.

[0080] Exemplarily, the first housing 110 may have a support surface facing the first non-bending portion 210 of the folding screen 200, and the first non-bending portion 210 of the folding screen 200 is attached to the support surface of the first housing 110, for example, the first non-bending portion 210 of the folding screen 200 is bonded to the support surface of the first housing 110. Similarly, the second housing 120 may have a support surface facing the second non-bending portion 220 of the folding screen 200, and the second non-bending portion 220 of the folding screen 200 is attached to the support surface of the second housing 120, for example, the second non-bending portion 220 of the folding screen 200 is bonded to the support surface of the second housing 120.

[0081] In addition, both the first shell 110 and the second shell 120 may have a storage space, and some functional devices (not shown in the figure) of the foldable electronic device 10 may be installed in the storage space, for example, circuit boards, batteries, camera modules, microphones, speakers and other devices may be installed in the storage space. Exemplarily, circuit boards may be provided in both the first shell 110 and the second shell 120, and the electrical connection between the devices in the two shells is realized through the circuit boards in the two shells; the battery for powering the device may be provided only in the first shell 110 or the second shell 120, or the battery may be provided in both the first shell 110 and the second shell 120; as for other devices such as camera modules, microphones, speakers, etc., they may be centrally provided in the first shell 110 or the second shell 120, or some devices may be provided in the first shell 110 and some devices may be provided in the second shell 120.

[0082] Continue to refer to Figure 4 In the housing assembly 100 of the foldable electronic device, the first housing 110 and the second housing 120 may both include a middle frame 101, and the first non-bending portion 210 and the second non-bending portion 220 of the foldable screen 200 may be supported on the front of the corresponding middle frame 101. For an external foldable electronic device or an internal foldable electronic device without an additional straight screen 300, the first housing 110 and the second housing 120 of the electronic device 1 may both further include a back cover 102, and the back cover 102 is connected to a side surface of the middle frame 101 away from the foldable screen 200; for an internal foldable electronic device with an additional straight screen 300, one of the first housing 110 and the second housing 120 may not include the back cover 102, but may install the straight screen 300 on the back of the middle frame 101 instead.

[0083] In the first shell 110 and the second shell 120, the middle frame 101 and the back cover 102 (the straight screen 300) together form a receiving cavity, and the receiving cavity is used to install the aforementioned circuit board, battery, camera module, microphone, speaker and other devices.

[0084] During the use of the foldable electronic device 10, it is usually necessary to detect its opening and closing angle, which is the rotation angle of the second shell 120 relative to the first shell 110, that is, it is necessary to detect the rotation angle of the second shell 120 relative to the first shell 110. Among them, the folded state of the foldable electronic device 10 is usually taken as the initial state. When the foldable electronic device 10 is in the folded state, the first shell 110 and the second shell 120 are opposite and stacked, and the rotation angle of the second shell 120 relative to the first shell 110 is 0°. When the foldable electronic device 10 is in the unfolded state, the first shell 110 and the second shell 120 are coplanar, and the rotation angle of the second shell 120 relative to the first shell 110 is 180°. Usually, the rotation angle of the second shell 120 relative to the first shell 110 ranges from 0° to 180°, that is, the opening and closing angle of the foldable electronic device 10 ranges from 0° to 180°.

[0085] By detecting the opening and closing angle of the foldable electronic device 10, some related controls on the foldable electronic device 10 can be implemented, especially in the process of the foldable electronic device 10 dynamically switching between the folded state and the unfolded state, some related controls on the foldable electronic device 10 can be performed. For example, according to the opening and closing angle of the foldable electronic device 10, or according to the opening and closing angle of the housing assembly 100, the dynamic effect of the wallpaper displayed on the foldable screen 200 can be controlled, especially in the process of the foldable electronic device 10 dynamically switching between the folded state and the unfolded state, according to the opening and closing angle of the foldable electronic device 10, the wallpaper displayed on the foldable screen 200 can be controlled to have a gradually changing dynamic effect.

[0086] Illustratively, during the process of the foldable electronic device 10 being transformed from a folded state to an unfolded state, as the opening and closing angle of the foldable electronic device 10 gradually increases, the flower displayed on the folding screen 200 gradually changes from a bud to a fully bloomed state; conversely, during the process of the foldable electronic device 10 being transformed from an unfolded state to a folded state, as the opening and closing angle of the foldable electronic device 10 gradually decreases, the flower displayed on the folding screen 200 gradually changes from a fully bloomed state to a bud.

[0087] In the related art, a complex angle detection mechanism is usually configured in the housing assembly 100, and the opening and closing angle of the housing assembly 100 (foldable electronic device 10) is detected by the angle detection mechanism. However, the angle detection mechanism is relatively complex, difficult to install and costly, which increases the production cost of the foldable electronic device 10 and reduces the production efficiency of the foldable electronic device 10; and the angle detection mechanism occupies a large space, which is not conducive to the layout of other components in the housing assembly 100, and will also increase the volume of the housing assembly 100, which is not conducive to the thin and light design of the foldable electronic device 10.

[0088] In view of this, the present embodiment improves the housing assembly 100 of the foldable electronic device 10 by arranging a detection device, a conversion device and at least one magnetic member in the housing assembly 100, arranging the detection device in the first housing 110, and arranging at least one magnetic member in the second housing 120, and the conversion device is electrically connected to the detection device. The magnetic field strength generated by the magnetic member is detected by the detection device, and the signal of the magnetic field strength detected by the detection device can be transmitted to the conversion device, and the conversion device converts the magnetic field strength into a corresponding opening and closing angle to detect the opening and closing angle of the housing assembly 100. In this way, the opening and closing angle of the housing assembly 100 can be detected by only using the magnetic member, the detection device and the conversion device. The structure is simple and easy to install, which can reduce the production cost of the foldable electronic device 10, improve the production efficiency of the foldable electronic device 10, and is conducive to the layout design of the housing assembly 100, and helps the thin and light design of the foldable electronic device 10.

[0089] The housing assembly 100 of the foldable electronic device 10 of this embodiment is described in detail below.

[0090] Figure 5 A schematic cross-sectional view of a housing assembly provided in an embodiment of the present application; Figure 6 A schematic cross-sectional view of another housing assembly provided in an embodiment of the present application.

[0091] Reference Figure 5 or Figure 6 As shown, the housing assembly 100 of this embodiment is further provided with a detection device 111, a conversion device (not shown in the figure) and at least one magnetic member 140. The detection device 111 is arranged in the first housing 110, and at least one magnetic member 140 is arranged in the second housing 120. The conversion device can be arranged in the first housing 110 or in the second housing 120, and the conversion device is electrically connected to the detection device 111. The detection device 111 can detect the magnetic field strength generated by the magnetic member 140, and the signal of the magnetic field strength detected by the detection device 111 can be transmitted to the conversion device, and the conversion device converts the signal of the magnetic field strength into a signal of the opening and closing angle for output, so as to detect the opening and closing angle of the housing assembly 100.

[0092] During the rotation of the second shell 120 relative to the first shell 110, that is, during the change of the opening and closing angle of the shell assembly 100, the distance of the magnetic member 140 relative to the detection device 111 changes, and the magnetic field strength detected by the detection device 111 also changes. In addition, there is a linear relationship between the magnetic field strength and the opening and closing angle. As the opening and closing angle gradually increases, the magnetic field strength gradually weakens, and as the opening and closing angle gradually decreases, the magnetic field strength gradually increases. Therefore, based on the linear relationship between the magnetic field strength and the opening and closing angle, the conversion device can convert the magnetic field strength into a uniquely determined opening and closing angle to achieve accurate detection of the opening and closing angle of the shell assembly 100.

[0093] Among them, when the second shell 120 and the first shell 110 are stacked relative to each other, the distance between the magnetic member 140 and the detection device 111 is the smallest, the magnetic field strength detected by the detection device 111 is the largest, and the opening and closing angle of the shell assembly 100 is 0°; when the second shell 120 is rotated to be coplanar with the first shell 110, the distance between the magnetic member 140 and the detection device 111 is the largest, the magnetic field strength detected by the detection device 111 is the smallest (close to zero), and the opening and closing angle of the shell assembly 100 is 180°. In the process of the shell assembly 100 gradually transforming from the folded state to the unfolded state, the distance between the magnetic member 140 and the detection device 111 gradually increases, and the magnetic field strength detected by the detection device 111 gradually decreases; in the process of the shell assembly 100 gradually transforming from the unfolded state to the folded state, the distance between the magnetic member 140 and the detection device 111 gradually decreases, and the magnetic field strength detected by the detection device 111 gradually increases.

[0094] In this embodiment, both the detection device 111 and the conversion device can be components that the foldable electronic device 10 should be equipped with. For example, the detection device 111 can be an electronic compass (compass), which detects the magnetic field strength of the magnetic member 140 it receives through the electronic compass. The conversion device can be a processor, and the linear relationship between the magnetic field strength and the opening and closing angle can be pre-stored in the processor. After receiving the magnetic field strength signal, the processor converts the magnetic field strength into the opening and closing angle according to the linear relationship, so as to detect the opening and closing angle of the housing assembly 100.

[0095] Exemplarily, the electronic compass may use a magnetoresistive sensor, for example, the electronic compass includes three mutually perpendicular magnetoresistive sensors (three-axis magnetoresistive sensors), the resistance value of which changes with the magnitude of the external magnetic field, thereby detecting the magnetic field strength generated by the magnetic member 140 at the location thereof. The compass may also use a Hall sensor, for example, a linear Hall sensor, which is composed of a Hall element, a linear amplifier, and an emitter follower, and the Hall voltage outputted by the linear relationship with the magnetic field strength, thereby detecting the magnetic field strength generated by the magnetic member 140 at the location thereof.

[0096] It should be noted that the components that the foldable electronic device 10 mentioned here should be equipped with do not completely refer to the components that should be installed in the shell assembly 100, but may also be an increase in the number of existing components in the shell assembly 100. Taking the detection device 111 as an electronic compass as an example, when an electronic compass is used to detect the magnetic field strength generated by the magnetic component 140 at its location, the electronic compass will be affected by the magnetic force of the magnetic component 140, and it cannot accurately locate the direction. At this time, at least two electronic compasses can be set in the shell assembly 100, one of which is used to detect the magnetic field strength of the magnetic component 140, and at least one other electronic compass is used to determine the direction.

[0097] Taking the conversion device as a processor as an example, the processor can be an existing component in the shell assembly 100 rather than a new component. The processor can, on the basis of completing the original function, add the function of receiving the magnetic field strength detected by the detection device 111 and converting the magnetic field strength into an opening and closing angle.

[0098] Of course, the magnetic component 140 can also be a component already existing in the shell assembly 100. At this time, for the magnetic component 140 already in the shell assembly 100, the basic function of the magnetic component 140 can be to rely on the magnetic field force it generates to provide a certain damping force for the movement (opening and closing) of the shell assembly 100, to ensure the stability of the shell assembly 100 in the folded state, the unfolded state and the movement process (state conversion process), and to improve the reliability of the shell assembly 100. On the basis of the magnetic component 140 providing damping force for the shell assembly 100, the detection of the opening and closing angle of the shell assembly 100 is achieved through the cooperation of the detection device 111, the conversion device and the magnetic component 140.

[0099] Among them, since the detection device 111 needs to detect the magnetic field strength generated by the magnetic member 140 at its location and transmit the magnetic field strength signal to the conversion device, it is necessary to transmit an electrical signal to the detection device 111 to control the operation of the detection device 111. In this regard, the detection device 111 can be arranged on the first circuit board 112 in the first housing 110, and the first circuit board 112 provides an electrical signal to the detection device 111, and can realize signal transmission between the detection device 111 and other devices (such as conversion devices).

[0100] For example, taking the first shell 110 as the main shell of the foldable electronic device 10 (the housing cavity of the shell is mainly used to install core components), the first circuit board 112 can be a main board installed in the first shell 110, and the first circuit board 112 can be integrated with system chips, central processing units (CPU), memory and other devices.

[0101] Similarly, the conversion device can also be arranged on a circuit board to transmit electrical signals to the conversion device through the circuit board to control the operation of the conversion device. The circuit board can also serve as a bridge for transmitting signals between the conversion device and other devices. Among them, when the conversion device is arranged in the first housing 110, the conversion device can also be arranged on the first circuit board 112, and the conversion device and the detection device 111 are connected by a wire; or, the conversion device can also be arranged on other circuit boards in the first housing 110, and the circuit board is electrically connected to the first circuit board 112 to achieve electrical connection between the conversion device and the detection device 111. When the conversion device is arranged in the second housing 120, the circuit board provided with the conversion device can be connected to the first circuit board 112 in the first housing 110 through a flexible circuit board to achieve electrical connection between the conversion device and the detection device 111; or, the conversion device and the detection device 111 can also be connected by wireless communication.

[0102] In this embodiment, by arranging the magnetic component 140, the detection device 111 and the conversion device in the housing assembly 100, the opening and closing angle of the housing assembly 100 is accurately detected, the structure is simple, and it is easy to install. In addition, the detection device 111, the conversion device and even the magnetic component 140 can be existing devices in the housing assembly 100, and the existing devices can be reused. In this way, the production cost of the foldable electronic device 10 can be reduced, the production efficiency of the foldable electronic device 10 can be improved, and it is conducive to the layout design of the internal structure of the housing assembly 100, meeting the light and thin design requirements of the foldable electronic device 10.

[0103] Reference Figure 5 As shown, in some embodiments, only one magnetic member 140 may be provided in the second housing 120, and the detection device 111 may be used to detect the magnetic field strength generated by the magnetic member 140 to determine the opening and closing angle of the housing assembly 100. As the second housing 120 rotates relative to the first housing 110, the spacing between the magnetic member 140 in the second housing 120 and the detection device 111 in the first housing 110 changes, and the magnetic field strength applied by the magnetic member 140 to the detection device 111 also changes. Moreover, the magnetic field strength applied by the magnetic member 140 to the detection device 111 is linearly related to the opening and closing angle of the housing assembly 100. According to the magnetic field strength of the magnetic member 140 detected by the detection device 111, the opening and closing angle of the housing assembly 100 can be accurately determined.

[0104] Reference Figure 6As shown, in other embodiments, on the basis of providing a magnetic member 140 in the second shell 120, a magnetic member 140 may also be provided in the first shell 110. For the convenience of description, the magnetic member 140 in the first shell 110 is defined as the first magnetic member 141, and the magnetic member 140 in the second shell 120 is defined as the second magnetic member 142 in this embodiment. The first magnetic member 141 in the first shell 110 is located on the side of the detection device 111 away from the second shell 120, or in other words, the detection device 111 is located on the side of the first magnetic member 141 facing the second magnetic member 142. When the second shell 120 and the first shell 110 are stacked relative to each other, the detection device 111 is located between the first magnetic member 141 and the second magnetic member 142.

[0105] Compared with only setting one magnetic member 140 in the second shell 120, by setting the first magnetic member 141 in the first shell 110 and the second magnetic member 142 in the second shell 120, the magnetic field strength generated between the first magnetic member 141 and the second magnetic member 142 is greater. By setting the detection device 111 on the side of the first magnetic member 141 facing the second magnetic member 142, the detection device 111 is located within the magnetic field generated between the first magnetic member 141 and the second magnetic member 142, and is subjected to a greater magnetic field strength. As the second shell 120 rotates relative to the first shell 110, the change in the magnetic field strength detected by the detection device 111 is also more obvious, so that the magnetic field strength can be more accurately converted into the corresponding opening and closing angle, so as to improve the accuracy of the opening and closing angle detection.

[0106] Moreover, in the present embodiment, a magnetic attraction is generated between the first magnetic member 141 and the second magnetic member 142. As the distance between the first magnetic member 141 and the second magnetic member 142 gradually increases or decreases, the magnetic field strength generated between the two gradually decreases or increases, and the magnetic field strength between the two magnetic members 140 generating the magnetic attraction is in a monotonic linear relationship with the distance between the two. In other words, as the opening and closing angle of the shell assembly 100 gradually increases, the magnetic field strength generated between the first magnetic member 141 and the second magnetic member 142 gradually decreases; as the opening and closing angle of the shell assembly 100 gradually decreases, the magnetic field strength generated between the first magnetic member 141 and the second magnetic member 142 gradually increases; the magnetic field strength and the opening and closing angle conform to a monotonic linear relationship, and the corresponding relationship between the magnetic field strength and the opening and closing angle is unique, and the opening and closing angle can be accurately determined according to the magnetic field strength.

[0107] Whether only one magnetic component 140 is provided in the second shell 120, or a first magnetic component 141 is provided in the first shell 110 and a second magnetic component 142 is provided in the second shell 120, in this embodiment, the magnetic component 140 may be a permanent magnetic component or an electromagnetic component. When the magnetic component 140 is a permanent magnetic component, the magnetic component 140 does not need to be connected to other components, and the magnetic component 140 may only be mechanically fixed in the shell assembly 100; when the magnetic component 140 is an electromagnetic component, the magnetic component 140 needs to be connected to a power supply device to supply power to the magnetic component 140, for example, the magnetic component 140 may be electrically connected to a circuit board provided in the shell assembly 100.

[0108] Taking the example that the first magnetic component 141 is disposed in the first shell 110 and the second magnetic component 142 is disposed in the second shell 120, the first magnetic component 141 and the second magnetic component 142 can both be permanent magnetic components, or the first magnetic component 141 and the second magnetic component 142 can both be electromagnetic components, or one of the first magnetic component 141 and the second magnetic component 142 is a permanent magnetic component and the other is an electromagnetic component.

[0109] In addition, this embodiment does not limit the setting direction of the magnetic member 140. As an implementation method, the two poles (the south pole and the north pole) of the magnetic member 140 can be arranged along the thickness direction of the shell assembly 100. Taking the magnetic member 140 in the second shell 120 as an example, when the first shell 110 and the second shell 120 are relatively stacked, one of the south pole and the north pole of the magnetic member 140 in the second shell 120 faces the first shell 110, and the other faces away from the first shell 110. As another implementation method, the two poles of the magnetic member 140 can be arranged along the plane direction of the shell assembly 100. Continuing to take the magnetic member 140 in the second shell 120 as an example, it is equivalent to the two poles of the magnetic member 140 being arranged along the plane direction of the second shell 120.

[0110] The following description will be made by taking the example that the magnetic member 140 is a permanent magnetic member, and the first magnetic member 141 is disposed in the first shell 110 and the second magnetic member 142 is disposed in the second shell 120 .

[0111] Continue to refer to Figure 5 or Figure 6 As shown, when the magnetic member 140 is installed in the housing assembly 100, taking the state when the second housing 120 and the first housing 110 are relatively stacked as an example, since the detection device 111 needs to be arranged on the side of the first magnetic member 141 facing the second magnetic member 142, the first magnetic member 141 can be mounted on the inner wall of the first housing 110 on the side away from the second housing 120. For example, the first magnetic member 141 can be mounted on the back cover 102 of the first housing 110, or, when the side where the first housing 110 is located is equipped with the aforementioned straight screen 300, the first magnetic member 141 can be mounted on the straight screen 300.

[0112] The second magnetic member 142 in the second shell 120 can be arranged close to the first shell 110, and the second magnetic member 142 can be mounted on the inner wall of the second shell 120 facing the first shell 110. For example, the second magnetic member 142 can be mounted on the middle frame 101 of the second shell 120. In this way, the distance between the second magnetic member 142 and the first magnetic member 141 is shortened, especially when the shell assembly 100 is in a folded state (when the second shell 120 and the first shell 110 are relatively stacked), the magnetic field strength between the second magnetic member 142 and the first magnetic member 141 can be increased, and the magnetic field strength at the position of the detection device 111 is stronger, which can improve the sensitivity of the detection device 111 in detecting the magnetic field strength, and then improve the accuracy of the opening and closing angle detection.

[0113] Similarly, when only one magnetic component 140 is provided in the second shell 120, that is, a second magnetic component 142 is provided in the second shell 120 and only a detection device 111 is provided in the first shell 110, the magnetic field strength detected by the detection device 111 is relatively weak. By mounting the second magnetic component 142 on the inner wall of the second shell 120 facing the first shell 110, the distance between the second magnetic component 142 and the detection device 111 is shortened, thereby improving the sensitivity of the detection device 111 in detecting the magnetic field strength and improving the accuracy of the opening and closing angle detection.

[0114] Figure 7 A schematic diagram of the layout of a magnetic component provided in an embodiment of the present application; Figure 8 A schematic diagram of another layout of magnetic components provided in an embodiment of the present application.

[0115] Reference Figure 7 As shown in the figure, the two poles of the magnetic member 140 are arranged along the thickness direction of the shell assembly 100. At this time, when the first shell 110 and the second shell 120 are relatively stacked, that is, when the shell assembly 100 is in a folded state (the folding screen 200 is in a folded state), in order to generate a magnetic attraction between the first magnetic member 141 in the first shell 110 and the second magnetic member 142 in the second shell 120, one of the first magnetic member 141 and the second magnetic member 142 has a magnetic pole facing each other on the side thereof as the south pole (S pole) and a magnetic pole away from each other on the side thereof as the north pole (N pole), and the other of the first magnetic member 141 and the second magnetic member 142 has a magnetic pole facing each other on the side thereof as the north pole and a magnetic pole away from each other on the side thereof as the south pole.

[0116] As shown in the figure, the side of the first magnetic component 141 facing the second magnetic component 142 is the south pole, and the side of the first magnetic component 141 away from the second magnetic component 142 is the north pole, while the side of the second magnetic component 142 facing the first magnetic component 141 is the north pole, and the side of the second magnetic component 142 away from the first magnetic component 141 is the south pole. The south pole of the first magnetic component 141 is opposite to the north pole of the second magnetic component 142, and a magnetic attraction is generated between the two.

[0117] Of course, the side of the first magnetic component 141 facing the second magnetic component 142 can also be the North Pole, and the side of the first magnetic component 141 away from the second magnetic component 142 can be the South Pole, while the side of the second magnetic component 142 facing the first magnetic component 141 is the South Pole, and the side of the second magnetic component 142 away from the first magnetic component 141 is the North Pole. The North Pole of the first magnetic component 141 is opposite to the South Pole of the second magnetic component 142, and a magnetic attraction is generated between the two.

[0118] Reference Figure 8 As shown, the figure shows the arrangement of the two poles of the magnetic member 140 along the planar direction of the shell assembly 100. Specifically, the arrangement of the two poles of the magnetic member 140 along the first direction in the planar direction of the shell assembly 100 is taken as an example. At this time, when the first shell 110 and the second shell 120 are relatively stacked (the folding screen 200 is in a folded state), in order to generate a magnetic attraction between the first magnetic member 141 in the first shell 110 and the second magnetic member 142 in the second shell 120, along the first direction, the first magnetic member 141 is arranged in sequence with the south pole (S pole) and the north pole (N pole), and the second magnetic member 142 is arranged in sequence with the north pole and the south pole. In this way, the south pole of the first magnetic member 141 corresponds to the north pole of the second magnetic member 142, and the north pole of the first magnetic member 141 corresponds to the south pole of the second magnetic member 142, and a magnetic attraction is generated between the two.

[0119] The magnetic member 140 may be arranged along the extension direction of the side of the housing assembly 100 (folding screen 200). In other words, the two poles of the magnetic member 140 may be arranged along the extension direction of the side of the housing assembly 100. Figure 8 As shown, the two poles of the magnetic member 140 can be arranged along the extension direction of the folding edge (the side that needs to be folded) of the folding screen 200; of course, in other examples, the two poles of the magnetic member 140 can also be arranged along the extension direction of the non-folding edge (the side that does not need to be folded) of the folding screen 200.

[0120] For example, the two poles of the magnetic member 140 are arranged along the extension direction of the folding screen 200. Figure 8As shown, as an example, the side of the first magnetic component 141 close to the bendable portion 230 of the folding screen 200 is the South Pole, the side of the first magnetic component 141 away from the bendable portion 230 of the folding screen 200 is the North Pole, the side of the second magnetic component 142 close to the bendable portion 230 of the folding screen 200 is the North Pole, and the side of the second magnetic component 142 away from the bendable portion 230 of the folding screen 200 is the South Pole; as another example, the side of the first magnetic component 141 close to the bendable portion 230 of the folding screen 200 can also be the North Pole, the side of the first magnetic component 141 away from the bendable portion 230 of the folding screen 200 is the South Pole, the side of the second magnetic component 142 close to the bendable portion 230 of the folding screen 200 can be the South Pole, and the side of the second magnetic component 142 away from the bendable portion 230 of the folding screen 200 is the North Pole.

[0121] As for the detection system composed of the first magnetic member 141, the second magnetic member 142 and the detection device 111, taking the case where the housing assembly 100 is in a folded state as an example, this embodiment does not specifically limit the relative positions of the three in the plane direction of the housing assembly 100. Among them, the detection device 111 can be located in the overall coverage area of ​​the first magnetic member 141 and the second magnetic member 142. For example, with the positions of the first magnetic member 141 and the second magnetic member 142 as the vertical angles, the first magnetic member 141 and the second magnetic member 142 together form a rectangle (the extension direction of the side of the rectangle corresponds to the extension direction of the side of the housing assembly 100), and the detection device 111 is located in the coverage range of the rectangle.

[0122] In the rectangular area formed by the first magnetic member 141 and the second magnetic member 142, the density of the magnetic flux lines of the magnetic field is relatively large. By arranging the detection device 111 in the rectangular area, there are more magnetic flux lines at the location of the detection device 111, and the location of the detection device 111 has sufficient magnetic field strength, which can ensure the reliability of the detection device 111 in detecting the magnetic field strength. As the second shell 120 rotates relative to the first shell 110, the distance between the first magnetic member 141 and the second magnetic member 142 changes, and the change in the magnetic field strength detected by the detection device 111 is also relatively obvious, which can improve the sensitivity of the detection device 111.

[0123] Continuing to take the shell assembly 100 in the folded state as a reference, due to the magnetic attraction between the first magnetic member 141 and the second magnetic member 142, the magnetic field between the first magnetic member 141 and the second magnetic member 142 has the largest magnetic flux density and the strongest magnetic field strength on the line (straight line) between the two. Therefore, the detection device 111 can be set on the line between the first magnetic member 141 and the second magnetic member 142, so that the magnetic flux density and magnetic field strength at the location of the detection device 111 are large, and the magnetic field strength detected by the detection device 111 is large. With the change of the opening and closing angle of the shell assembly 100, the magnetic field strength detected by the detection device 111 changes significantly, which can improve the reliability and sensitivity of the detection device 111.

[0124] As an example, the first magnetic member 141 in the first shell 110 and the second magnetic member 142 in the second shell 120 can be arranged opposite to each other. In other words, when the shell assembly 100 is in a folded state, the first magnetic member 141 and the second magnetic member 142 are opposite to each other, so that the distance between the first magnetic member 141 and the second magnetic member 142 is the smallest, and the magnetic field strength generated between the two is the largest. At this time, the detection device 111 can be arranged opposite to the first magnetic member 141, and the detection device 111 can be located in the coverage area of ​​the positive projection of the first magnetic member 141. The detection device 111 can detect a larger magnetic field strength and can more accurately correspond the magnetic field strength to the opening and closing angle. In addition, since the magnetic field strength detected by the detection device 111 is the largest when the shell assembly 100 is in a folded state, the decrease in the magnetic field strength detected by the detection device 111 is also the most obvious during the process of the shell assembly 100 gradually converting from the folded state to the unfolded state, which can enhance the sensitivity of the detection device 111 and improve the accuracy of the opening and closing angle detection.

[0125] The present embodiment also provides an opening and closing angle detection method of a housing assembly 100 (foldable electronic device 10) (hereinafter referred to as an opening and closing angle detection method), which is applied to the aforementioned housing assembly 100 (foldable electronic device 10).

[0126] Fig. 9 This is a flowchart of the opening and closing angle detection method provided in the embodiment of the present application. Fig. 9 As shown, the opening and closing angle detection method provided in the embodiment of the present application includes the following steps:

[0127] S100, detecting the magnetic field strength generated by the magnetic components in the housing assembly.

[0128] First, the magnetic field strength generated by the magnetic member 140 in the housing assembly 100 is detected by the detection device 111 disposed in the first housing 110 of the housing assembly 100. When only one magnetic member 140 is disposed in the second housing 120 of the housing assembly 100, the magnetic field strength generated by the magnetic member 140 at the location where the detection device 111 is located is detected by the detection device 111; when the first magnetic member 141 is disposed in the first housing 110 of the housing assembly 100 and the second magnetic member 142 is disposed in the second housing 120, a magnetic attraction force is generated between the first magnetic member 141 and the second magnetic member 142, and the magnetic field strength at the location where the first magnetic member 141 and the second magnetic member 142 are located is detected by the detection device 111.

[0129] S200: Obtaining an opening and closing angle of the shell assembly according to the magnetic field strength.

[0130] After the detection device 111 detects the magnetic field strength, it transmits the signal of the magnetic field strength to the conversion device set in the housing assembly 100. The conversion device converts the obtained magnetic field strength signal into a corresponding opening and closing angle to detect the opening and closing angle of the housing assembly 100. There is a unique corresponding relationship between the magnetic field strength and the opening and closing angle. The corresponding relationship between the magnetic field strength and the opening and closing angle can be pre-stored in the conversion device. According to the magnetic field strength and the corresponding relationship, a unique opening and closing angle is obtained, which can ensure the accuracy of the opening and closing angle detection.

[0131] Whether only one magnetic component 140 is set in the second shell 120, or the first magnetic component 141 is set in the first shell 110 and the second magnetic component 142 is set in the second shell 120, as the opening and closing angle of the shell assembly 100 gradually increases, the magnetic field strength detected by the detection device 111 gradually decreases, and the magnetic field strength and the opening and closing angle conform to a monotonic linear relationship, and there is a one-to-one correspondence between the two. Therefore, a unique and accurate opening and closing angle can be obtained based on the magnetic field strength detected by the detection device 111.

[0132] Fig.10 The simulation curve diagram of magnetic field intensity and opening and closing angle provided in this embodiment. Fig.10 As shown in the figure, a curve chart of the corresponding relationship between the opening and closing angle and the magnetic field strength obtained by simulation is shown, wherein the horizontal axis represents the opening and closing angle (the angle of rotation of the second shell 120 relative to the first shell 110), and the vertical axis represents the magnetic field strength in the direction perpendicular to the thickness of the shell assembly.

[0133] By fitting the corresponding relationship between the magnetic field intensity detected by the detection device 111 and the opening and closing angle, the following conclusions are obtained:

[0134] When the opening angle is ≥0° and ≤90°, or when the opening angle is between 0° and 90°, the corresponding relationship between the opening angle and the magnetic field strength is a quadratic function, satisfying the formula α=Am 2 +Bm+C, where α is the opening and closing angle, m is the magnetic field strength, and A, B, and C are all constants. The opening and closing angle can be calculated based on this formula.

[0135] It should be noted that the corresponding relationship between the magnetic field strength and the opening and closing angle is different depending on the magnetic force of the magnetic member 140 (the first magnetic member 141 and the second magnetic member 142), the position of the magnetic member 140 (the first magnetic member 141 and the second magnetic member 142) and the relative position of the magnetic member 140 (the first magnetic member 141 and the second magnetic member 142) to the detection device 111. In other words, the specific values ​​of A, B, and C in the above formula are different depending on the magnetic force of the magnetic member 140 and the relative position of the magnetic member 140 and the detection device 111.

[0136] According to the specific configuration of the magnetic member 140 and the detection device 111, the corresponding relationship between the magnetic field strength and the opening and closing angle can be fitted to determine the specific values ​​of A, B, and C in the above formula. Then, the corresponding opening and closing angle can be calculated based on the magnetic field strength and the fitted quadratic function formula.

[0137] When the opening and closing angle is greater than 90° and less than or equal to 180°, or in other words, when the opening and closing angle is between 90° and 180°, the corresponding relationship between the opening and closing angle and the magnetic field strength is a linear function, satisfying the formula α=Dm+E, wherein α is the opening and closing angle, m is the magnetic field strength, and D and E are both constants. The opening and closing angle can be calculated according to this formula.

[0138] Similar to the aforementioned quadratic function formula, the values ​​of D and E in the linear function formula are different when the magnetic force of the magnetic member 140 is different and the relative positions of the magnetic member 140 and the detection device 111 are different. According to the specific setting of the magnetic member 140 and the detection device 111, the corresponding relationship between the magnetic field strength and the opening and closing angle can be fitted first to determine the specific values ​​of D and E in the linear function formula. Afterwards, the corresponding opening and closing angle is calculated based on the magnetic field strength and the fitted linear function formula.

[0139] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0140] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the embodiments of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

Claims

1. A housing assembly, applied to a foldable electronic device, characterized in that: It includes a first shell, a second shell, a rotating shaft, a detection device, a conversion device and at least one magnetic device; The first shell and the second shell are rotatably connected, the detection device is arranged in the first shell, the at least one magnetic member includes a magnetic member arranged in the second shell, the conversion device is arranged in the first shell or in the second shell, and the conversion device is electrically connected to the detection device, wherein the rotating shaft is connected between the first shell and the second shell, and the detection device and the at least one magnetic member are arranged close to the rotating shaft; when the first shell and the second shell are relatively stacked, the detection device is located in the coverage area of ​​the orthographic projection of the at least one magnetic member; The detection device detects the magnetic field strength generated by the magnetic member, and the conversion device converts the magnetic field strength into a corresponding opening and closing angle; wherein the opening and closing angle is a rotation angle of the second shell relative to the first shell; When the foldable electronic device is in a semi-expanded state, the foldable electronic device is suspended at an angle between the expanded state and the folded state; The at least one magnetic member includes a first magnetic member and a second magnetic member, the first magnetic member is disposed in the first shell, and the second magnetic member is disposed in the second shell; Wherein, a magnetic attraction force is generated between the first magnetic member and the second magnetic member, and the detection device is located on a side of the first magnetic member facing the second magnetic member; When the first shell and the second shell are relatively stacked, the detection device is located on a line between the first magnetic member and the second magnetic member.

2. The housing assembly according to claim 1, characterized in that: The two poles of the magnetic member are arranged along the thickness direction of the shell component.

3. The housing assembly according to claim 1, characterized in that: The two poles of the magnetic member are arranged along the plane direction of the shell component.

4. The housing assembly according to claim 1, characterized in that: When the first shell and the second shell are stacked relative to each other, one of the first magnetic member and the second magnetic member has a magnetic pole facing the other side as the south pole and a magnetic pole away from the other side as the north pole, and the other has a magnetic pole facing the other side as the north pole and a magnetic pole away from the other side as the south pole.

5. The housing assembly according to claim 1, characterized in that: When the first shell and the second shell are relatively stacked, along a first direction within the plane where the shell assembly is located, the first magnetic member is sequentially arranged with a south pole and a north pole, and the second magnetic member is sequentially arranged with a north pole and a south pole.

6. The housing assembly according to claim 5, characterized in that: The first direction is an extension direction of a side edge of the housing assembly.

7. The housing assembly according to claim 1, characterized in that: The first magnetic member and the second magnetic member are both permanent magnetic members, or at least one of the first magnetic member and the second magnetic member is an electromagnetic member.

8. The housing assembly according to claim 1, characterized in that: When the first shell and the second shell are relatively stacked, the first magnetic member and the second magnetic member are arranged opposite to each other, and the detection device is located in the coverage area of ​​the orthographic projection of the first magnetic member.

9. The housing assembly according to claim 1, characterized in that: When the first shell and the second shell are stacked relatively to each other, the second magnetic member is attached to an inner wall of the second shell facing the first shell.

10. The housing assembly according to claim 9, characterized in that: When the first shell and the second shell are stacked relative to each other, the first magnetic member is attached to an inner wall of the first shell on a side facing away from the second shell.

11. The housing assembly according to any one of claims 1 to 3, characterized in that: A first circuit board is also arranged in the first shell, and the detection device is arranged on the first circuit board.

12. The housing assembly according to any one of claims 1 to 3, characterized in that: The detection device includes a magnetoresistive sensor or a Hall sensor.

13. The housing assembly according to any one of claims 1 to 3, characterized in that: The first shell and the second shell rotate relatively around the rotating shaft.

14. A method for detecting the opening and closing angle of a housing assembly, applied to the housing assembly according to any one of claims 1 to 13, characterized in that: The opening and closing angle detection method comprises: Detecting the magnetic field strength generated by the magnetic component in the housing assembly; The opening and closing angle of the shell assembly is obtained according to the magnetic field strength; wherein the opening and closing angle is the rotation angle of the second shell relative to the first shell.

15. The method for detecting an opening and closing angle according to claim 14, characterized in that: Obtaining the opening and closing angle of the shell assembly according to the magnetic field strength includes: When the opening and closing angle is ≥0° and ≤90°, according to α=Am 2 +Bm+C to calculate the opening and closing angle; When the opening and closing angle is greater than 90° and less than or equal to 180°, the opening and closing angle is calculated according to α=Dm+E; Among them, α is the opening and closing angle, m is the magnetic field intensity, and A, B, C, D, and E are all constants.

16. A foldable electronic device, characterized in that: It comprises a folding screen and a shell assembly as described in any one of claims 1 to 13, wherein the folding screen is attached to the shell assembly.

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