CN219980857U - Foldable device - Google Patents

Abstract

Embodiments of the present application provide a foldable device, including a casing with a rotating shaft mechanism installed on opposite sides. The casing is provided with a grounding piece and a flexible circuit board. The two ends of the flexible circuit board respectively span both sides of the casing. The installed rotating shaft mechanism sets a conductive sheet component on the surface of the flexible circuit board. The conductive sheet component is electrically connected to the grounding structure of the flexible circuit board and the grounding piece on the housing. In this way, the conductive sheet component can connect to the grounding components provided on the housing. The signal transmitted by the antenna is isolated from the signal transmitted by the flexible circuit board, which can reduce the interference between the antenna provided on the housing with the rotating shaft mechanism installed on both opposite sides and the flexible circuit board with both ends respectively spanning the rotating shaft mechanism on both sides. Signal interference.

Description

Foldable device

Technical field

Embodiments of the present application relate to the technical field of electronic devices, and in particular to a foldable device.

Background technique

As flexible screen technology gradually matures, the display methods of electronic devices have undergone tremendous changes. One of them is the emergence of foldable mobile phones, computers and other electronic devices. The display screens of foldable electronic devices can be flexibly changed according to different usage scenarios. Switching modes, it also has a high screen-to-body ratio and clarity. Take foldable mobile phones as an example. After folding, the mobile phone can only have the size of a traditional mobile phone, which is convenient to carry, but when unfolded, it can have a tablet-like display size. These features make it possible to switch modes. Foldable electronic devices have become one of the most popular products.

In the related art, a three-fold foldable device usually includes a first housing, a second housing, a third housing, a first rotating shaft mechanism and a second rotating shaft mechanism, where the first housing and the second housing The bodies are rotationally connected through the first rotating shaft mechanism, and the second housing and the third housing are rotationally connected through the second rotating shaft mechanism, so that the first housing and the second housing and the second housing and the third housing are rotationally connected. The three shells can rotate relative to each other, thereby realizing the folding or unfolding of the first shell and the second shell and the second shell and the third shell. A flexible printed circuit board (FPC) and an antenna are disposed on the second housing between the first housing and the third housing. The opposite ends of the flexible circuit board can span the first rotating shaft mechanism and the antenna respectively. The second rotating shaft mechanism extends into the first housing and the third housing.

However, in the three-fold foldable device in the related art, signals are easily generated between the antennas provided on the housing with rotating shaft mechanisms installed on both opposite sides and the flexible circuit boards at both ends respectively spanning the rotating shaft mechanisms on both sides. interference.

Utility model content

Embodiments of the present application provide a foldable device. By arranging a conductive sheet assembly on the surface of a flexible circuit board that is electrically connected to the grounding structure of the flexible circuit board and the grounding piece on the housing, the conductive sheet assembly can connect to the grounding components provided on the housing. The signal transmitted by the antenna is isolated from the signal transmitted by the flexible circuit board, which can reduce the interference between the antenna provided on the housing with the rotating shaft mechanism installed on both opposite sides and the flexible circuit board with both ends respectively spanning the rotating shaft mechanism on both sides. Signal interference.

This application provides a foldable device, including a first housing, a second housing, a third housing, a first rotating shaft mechanism, a second rotating shaft mechanism, a first flexible circuit board, an antenna and a conductive sheet assembly. The second housing includes a first side and a second side that are opposite in the first direction and a third side and a fourth side that are opposite in the second direction. The first side is rotationally connected to the first housing through a first rotating shaft mechanism. , the second side is rotationally connected to the third housing through the second rotating shaft mechanism, and at least one of the third side and the fourth side is provided with an antenna, wherein the first direction and the second direction are both consistent with the thickness direction of the second housing. Vertical, the first direction is perpendicular to the second direction. The first flexible circuit board includes a first section, a second section, a third section, a fourth section and a fifth section. The first section is located in the first housing, the third section is located in the second housing, and the fifth section is located in the third section. In the housing, one end of the third section in the first direction is connected to the first section through the second section, and the other end of the third section in the first direction is connected to the fifth section through the fourth section. The first component is fixedly connected to the first housing, the second component is fixedly connected to the third housing, the first section is connected to the first component, and the fifth section is connected to the second component, so that the first component and the second component pass through the third component. A flexible circuit board is electrically connected. The first flexible circuit board includes a first surface layer and a second surface layer that are opposite in the thickness direction. The first surface layer includes a first part located in the third section, and the second surface layer includes a second part located in the third section. The conductive sheet assembly is In the second housing, the conductive sheet component is located on a side of the first part facing away from the second part. A grounding piece is fixedly connected to the second housing. In the thickness direction of the second housing, at least part of the first part and at least part of the grounding piece are covered by the conductive sheet assembly. The area of the first part covered by the conductive sheet assembly has a grounding structure, the conductive sheet assembly is electrically connected to the grounding piece and the grounding structure.

In the foldable device according to the embodiment of the present application, the conductive sheet assembly is electrically connected to the grounding member fixedly connected in the second housing and the grounding structure on the first flexible circuit board, so that the conductive sheet assembly is grounded, and the grounded conductive sheet assembly can be used Isolating the signals transmitted in the third section from the signals transmitted by the antennas provided on the third and fourth sides can reduce the mutual interference between the signals transmitted in the third section and the signals transmitted by the antennas provided on the third and fourth sides. interference. In addition, part of the conductive sheet assembly is covered on the first flexible circuit board and part is covered on the grounding piece. The conductive sheet assembly can be installed after the first flexible circuit board and the grounding piece are assembled. The conductive sheet assembly is provided for other The assembly of components has less impact and is more convenient for disassembly and assembly.

In a possible implementation, the foldable device further includes a second flexible circuit board, and the second flexible circuit board is provided in the second housing. A third component and a fourth component are also fixedly connected to the second housing. The third component and the fourth component are respectively located on both sides of the third section in the second direction. One end of the second flexible circuit board is connected to the third component. , the other end of the second flexible circuit board is connected to the fourth device. The second flexible circuit board includes a main body part located on a side of the first part away from the second part. The size of the main body part in the first direction is smaller than the size of the third section in the first direction. The main part is in the second housing. The projection in the thickness direction is located outside the projection of the conductive sheet assembly in the thickness direction of the second housing. The first part includes a first overlapping area and a second overlapping area. In the thickness direction of the second housing, the main body part covers the first overlapping area, the conductive sheet assembly covers the second overlapping area, and the second overlapping area has a grounding structure.

In a possible implementation, the conductive sheet assembly includes a first conductive sheet, and the first conductive sheet includes a first conductive part, a second conductive part, and a third conductive part. In the first direction, the first conductive part and the second conductive part are spaced apart, and the main body part is disposed between the first conductive part and the second conductive part. In the second direction, the third conductive part is located on a side of the first conductive part and the second conductive part facing the grounding piece. One end of the first conductive part faces the grounding piece and one end of the second conductive part faces the grounding piece through the third conductive part. connected. The second overlapping area includes a first sub-area and a second sub-area. The first sub-area and the second sub-area are spaced apart from each other in the first direction. There is a first overlapping area between the first sub-area and the second sub-area. In the thickness direction of the second housing, the first conductive part covers the first sub-region, the second conductive part covers the second sub-region, and at least part of the grounding member is covered by the third conductive part. At least one of the first sub-region and the second sub-region has a ground structure, at least one of the first conductive part and the second conductive part is electrically connected to the ground structure, and the ground piece is electrically connected to the third conductive part.

In a possible implementation, the conductive sheet assembly includes a second conductive sheet and a third conductive sheet, and the second overlapping area includes a third sub-region and a fourth sub-region. In the first direction, the second conductive sheet and the third conductive sheet are spaced apart, a main body is provided between the second conductive sheet and the third conductive sheet, the third sub-region and the fourth sub-region are spaced apart, and the third sub-region There is a first overlapping area with the fourth sub-area. In the thickness direction of the second housing, the second conductive sheet covers the third sub-region, the third conductive sheet covers the fourth sub-region, and the grounding piece is partially covered by the second conductive sheet and partially covered by the third conductive sheet. . Both the third sub-region and the fourth sub-region have a grounding structure. The second conductive piece is electrically connected to the ground structure of the third sub-region. The third conductive piece is electrically connected to the ground structure of the fourth sub-region. The grounding member is electrically connected to the second conductive piece. The sheet and the third conductive sheet are both electrically connected.

In a possible implementation, the main body part is bonded and fixed to the first overlapping area covered in the thickness direction of the second housing.

In a possible implementation, in the second direction, one of the third component and the fourth component is located between the ground component and the third section.

In a possible implementation, the second housing has a battery installation slot, the battery is installed in the battery installation slot, the third section is located on a side of the battery away from the bottom of the battery installation slot, and the second section faces the battery.

In a possible implementation, the first flexible circuit board further includes a ground layer. In the thickness direction of the first flexible circuit board, the ground layer is located between the first surface layer and the second surface layer, and the ground structure is electrically connected to the ground layer through the ground via hole.

In a possible implementation, the grounding member is bonded and fixed to the conductive sheet assembly through a first conductive adhesive, so that the grounding member and the conductive sheet assembly are electrically connected.

In a possible implementation, the grounding structure is bonded and fixed to the conductive sheet assembly through a second conductive adhesive, so that the grounding structure and the conductive sheet assembly are electrically connected.

Description of the drawings

Figure 1 is a schematic diagram of a foldable device provided by an embodiment of the present application when the first housing and the third housing are rotated to a certain angle toward the second housing;

Figure 2 is a schematic diagram of a foldable device provided by an embodiment of the present application when it is in a flat state;

Figure 3 is a schematic diagram of a foldable device provided by an embodiment of the present application when the third housing is rotated to be stacked with the second housing;

Figure 4 is a schematic diagram of some components in the first chamber, the second chamber and the third chamber of yet another foldable device provided by an embodiment of the present application;

Figure 5 is a schematic diagram of a first flexible circuit board of yet another foldable device provided by an embodiment of the present application;

Figure 6 is a schematic diagram of the installation of the first flexible circuit board in the second housing of yet another foldable device provided by the embodiment of the present application;

Figure 7 is a schematic diagram of the installation of the first flexible circuit board in the second housing of yet another foldable device provided by the embodiment of the present application from another perspective;

Figure 8 is a schematic diagram of some components in the first chamber, the second chamber and the third chamber of yet another foldable device provided by an embodiment of the present application;

Figure 9 is a schematic cross-sectional view of the first flexible circuit board of yet another foldable device provided by an embodiment of the present application;

Figure 10 is a schematic diagram of another conductive sheet assembly of a foldable device provided by an embodiment of the present application;

Figure 11 is a schematic diagram of another conductive sheet assembly of a foldable device provided by an embodiment of the present application before it is installed on the first flexible circuit board;

Figure 12 is a schematic diagram of the installation of the first flexible circuit board and conductive sheet assembly in the second housing of yet another foldable device provided by an embodiment of the present application;

Figure 13 is a schematic diagram of another conductive sheet assembly of a foldable device provided by an embodiment of the present application before it is installed on the first flexible circuit board;

FIG. 14 is a schematic diagram of the installation of the first flexible circuit board and conductive sheet assembly in the second housing of yet another foldable device provided by an embodiment of the present application.

Explanation of reference symbols:

10. First shell;

11. The first device; 12. The first middle frame;

20. Second shell;

21. Grounding piece; 22. Third device; 23. Fourth device; 24. Battery installation slot; 25. First side; 26. Second side; 27. Third side; 28. Fourth side; 29. Two middle frames;

30. The third shell;

31. The second device; 32. The third middle frame;

40. The first rotating shaft mechanism;

50. Second rotating shaft mechanism;

60. Flexible screen;

61. The first region; 62. The second region; 63. The third region; 64. The fourth region; 65. The fifth region;

100. The first flexible circuit board;

110. The first paragraph; 120. The second paragraph; 130. The third paragraph; 131. The first part; 132. The second part; 140. The fourth paragraph; 150. The fifth paragraph;

161. First surface layer; 162. Second surface layer; 163. First ground layer; 164. First conductive layer; 165. Second conductive layer; 166. Insulating layer;

170. The first overlapping area;

180. The second overlapping area; 181. The first sub-area; 182. The second sub-area; 183. The third sub-area; 184. The fourth sub-area; 185. The first grounding structure;

190. The first ground via;

200. Second flexible circuit board; 210. Main part;

300. Antenna;

400. Conductive sheet components;

410. The first conductive sheet; 411. The first conductive part; 412. The second conductive part; 413. The third conductive part;

420. The second conductive piece; 430. The third conductive piece;

x, thickness direction of the second shell; y, first direction; z, second direction.

Detailed ways

The terms used in the embodiments of the present application are only used to explain the specific embodiments of the present application and are not intended to limit the present application. The implementation of the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Embodiments of the present application provide a foldable device that can change its shape by folding and unfolding to meet the needs of users in different scenarios. For example, when carrying, it can be folded to reduce the size of the foldable device; when in use, it can be unfolded to increase the size of the screen used for display or operation. It can be understood that the foldable device may also be called user equipment (UE) or terminal (terminal), etc.

Foldable devices provided by embodiments of the present application may include, but are not limited to, tablet computers (portable android devices, PADs), personal digital assistants (personal digital assistants, PDAs), handheld devices with wireless communication functions, computing devices, vehicle-mounted devices, and portable devices. Wearable devices, virtual reality (VR) terminal devices, augmented reality (AR) terminal devices, wireless terminals in industrial control, wireless terminals in self-driving, and telemedicine Wireless terminals in remote medical, wireless terminals in smart grid, wireless terminals in transportation safety, wireless terminals in smart city, and smart homes. Mobile terminals such as wireless terminals or fixed terminals. The embodiments of this application are described by taking a handheld device with a wireless communication function as an example. The handheld device with a wireless communication function may be a mobile phone.

Figure 1 is a schematic diagram of the first housing and the third housing of a foldable device provided by an embodiment of the present application when they are rotated to a certain angle toward the second housing. Figure 2 is a schematic diagram of a foldable device provided by an embodiment of the present application. A schematic view of the device when it is in a flat state. Figure 3 is a schematic view of a foldable device provided by an embodiment of the present application when the third shell is rotated to be stacked with the second shell. The x direction in the figure is the second shell. In the thickness direction, the y direction is the first direction, the z direction is the second direction, both the first direction and the second direction are perpendicular to the thickness direction of the second shell, and the first direction is perpendicular to the second direction.

As shown in Figures 1-3, in the embodiment of the present application, the foldable device may include at least three housings and a rotating shaft mechanism located between two adjacent housings. The two adjacent housings pass through two The rotating shaft mechanism between them is rotationally connected to realize folding and flattening between two adjacent shells.

It can be understood that two adjacent shells can rotate toward each other to overlap each other, so as to fold the two adjacent shells. The two adjacent shells can also be rotated back to each other until the angle between them is approximately 180° to flatten the two adjacent shells. Those skilled in the art can understand that the included angle referred to in this application document is approximately 180°. Due to design tolerances and other reasons, it may not be an absolute 180°, and a slight deviation is allowed, such as 165°, 177° or 185°.

It can be understood that the foldable device may include three, four, five or more housings, so that the foldable device may be a three-fold foldable device, a four-fold foldable device, or a five-fold foldable device. Foldable devices, etc.

For example, the foldable device may be a three-fold foldable device, and the at least three housings may include a first housing 10, a second housing 20, and a third housing 30. The second housing 20 is included in the third housing. The first side 25 and the second side 26 are opposite in one direction, the first side 25 is rotationally connected to the first housing 10 through the first rotating shaft mechanism 40, and the second side 26 is connected to the third housing 30 through the second rotating shaft mechanism 50. Turn the connection. The first housing 10 and the second housing 20 can rotate toward each other until they are stacked, or they can rotate backwards until the angle between them is approximately 180°. The third housing 30 and the second housing 20 can rotate toward each other until they are stacked. It can also be rotated backwards until the angle between the two is approximately 180°.

It can be understood that the first direction may be the length direction of the second housing 20 , and in this case, the second direction may be the width direction of the second housing 20 . The first direction may also be the width direction of the second housing 20 , in which case the second direction is the length direction of the second housing 20 .

It can be understood that the first housing 10 and the third housing 30 can be stacked on opposite sides of the second housing 20 in the thickness direction, so that the foldable device has a three-layer structure when in the folded state. The first housing 10 and the third housing 30 may be stacked on the same side of the second housing 20 in the thickness direction, and when the foldable device is in the folded state, the first housing 10 and the third housing 30 are located on the same layer. , so that the foldable device has a two-layer structure when it is in the folded state. The first housing 10 and the third housing 30 may be stacked on the same side of the second housing 20 in the thickness direction, and when the foldable device is in the folded state, in the thickness direction of the second housing 20, the third housing The body 30 is located between the first housing 10 and the second housing 20, so that the foldable device has a three-layer structure when in the folded state.

For example, the foldable device may also be a four-fold foldable device. In addition to the first shell 10 , the second shell 20 and the third shell 30 , the at least three shells also include a fourth shell. (not shown), the second housing 20 includes a first side 25 and a second side 26 opposite in the first direction. The first side 25 is rotationally connected to the first housing 10 through the first rotating shaft mechanism 40. The side 26 is rotatably connected to the third housing 30 through the second rotary shaft mechanism 50 , and the side of the third housing 30 away from the second rotary shaft mechanism 50 is rotatably connected to the fourth housing through the third rotary shaft mechanism (not shown). The first housing 10 and the second housing 20 can rotate toward each other until they are stacked, or they can rotate backwards until the angle between them is approximately 180°. The third housing 30 and the second housing 20 can rotate toward each other until they are stacked. The fourth housing and the third housing 30 can also be rotated back to each other until the angle between them is approximately 180°. The fourth housing and the third housing 30 can be rotated towards each other until they are stacked, or they can be rotated back until the angle between them is approximately 180°.

Let's take a foldable device that is a tri-fold type as an example to illustrate.

In the embodiment of the present application, the foldable device may also include a flexible screen 60. The flexible screen 60 is installed on the casing and the rotating shaft mechanism. The flexible screen 60 is located on the same side of the casing and the rotating shaft mechanism where it is installed. The casing can be connected to the flexible screen 60. The screen 60 is fixedly connected. For example, the housing can be fixed to the flexible screen 60 through adhesive, and the rotating shaft mechanism can be used to support the flexible screen 60 . Specifically, the flexible screen 60 may include a first area 61, a second area 62, a third area 63, a fourth area 64 and a fifth area 65. The first area 61 is opposite to the first housing 10 and is connected to the first area 61. The housing 10 is fixedly connected, the third area 63 is opposite to the second housing 20 and is fixedly connected to the second housing 20, and the fifth area 65 is opposite to the third housing 30 and is fixedly connected to the third housing 30. The third area 63 is connected to the first area 61 through the second area 62 on one side in the first direction, and is connected to the fifth area 65 through the fourth area 64 on the other side in the first direction.

It can be understood that when the flattened first housing 10 and the second housing 20 rotate toward each other to be stacked, the first housing 10 and the second housing 20 can drive the first region 61 and the third region 63 to rotate toward each other. And the second area 62 is bent, and when the stacked first housing 10 and the second housing 20 are rotated back to flatten, the first housing 10 and the second housing 20 can drive the first area 61 and the third The area 63 rotates away and gradually flattens the second area 62. When the flattened third housing 30 and the second housing 20 rotate toward each other until they are stacked, the third housing 30 and the second housing 20 can drive the fifth region 65 and the third region 63 to rotate toward each other, and make the fourth region 64 is bent, and when the stacked third housing 30 and the second housing 20 rotate backwards to flatten, the third housing 30 and the second housing 20 can drive the fifth region 65 and the third region 63 to rotate backwards. , and the fourth area 64 is gradually flattened.

It can be understood that the flexible screen 60 can be used for image display or as a virtual keyboard for inputting information. The functions of the flexible screen 60 can be determined according to specific application scenarios.

It can be understood that the flexible screen 60 may include, 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 (active-matrix organic light-emitting diode). light-emitting diode (AMOLED) display, miniorganic light-emitting diode (miniorganic light-emitting diode) display, micro light-emitting diode (micro light-emittingdiode) display, micro organic light-emitting diode (micro organic light-emitting diode) display, Quantum dot light-emitting diode (quantum dot light-emitting diode) display screen, etc.

In the embodiment of the present application, the casing may include a middle frame and a back cover. One side of the middle frame in the thickness direction of the casing is used for fixed connection with the flexible screen 60 , and the middle frame is on the other side in the thickness direction of the casing. The side is used for fixed connection with the back cover, and a cavity for installing devices can be formed between the middle frame and the back cover.

Figure 4 is a schematic diagram of some components in the first chamber, the second chamber and the third chamber of yet another foldable device provided by an embodiment of the present application.

As shown in FIG. 4 , in the embodiment of the present application, the first housing 10 may include a first middle frame 12 and a first back cover (not shown). The first middle frame 12 is in the thickness direction of the first housing 10 . One side of the first middle frame 12 is used to be fixedly connected to the first region 61 , and the other side of the first middle frame 12 in the thickness direction of the first housing 10 is used to be fixedly connected to the first back cover. A first cavity (not shown) can be formed between a back cover, and a first device 11 is installed in the first cavity. The first device 11 can be fixedly connected to the first middle frame 12 .

In the embodiment of the present application, the second housing 20 may include a second middle frame 29 and a second back cover (not shown). One side of the second middle frame 29 in the thickness direction of the second housing 20 is used for Fixedly connected to the third area 63, the other side of the second middle frame 29 in the thickness direction of the second housing 20 is used to be fixedly connected to the second back cover. The second middle frame 29 and the second back cover can be fixedly connected to each other. A second chamber (not shown) is formed.

It can be understood that the second middle frame 29 includes a first side 25 and a second side 26 opposite in the first direction.

In the embodiment of the present application, the third housing 30 may include a third middle frame 32 and a third back cover (not shown). One side of the third middle frame 32 in the thickness direction of the third housing 30 is used for Fixedly connected to the fifth area 65, the other side of the third middle frame 32 in the thickness direction of the third housing 30 is used to be fixedly connected to the third back cover. The third middle frame 32 and the third back cover can be fixedly connected to each other. A third chamber (not shown) is formed, in which the second device 31 is installed, and the second device 31 can be fixedly connected to the third middle frame 32 .

Figure 5 is a schematic diagram of a first flexible circuit board of yet another foldable device provided by an embodiment of the present application. Figure 6 is a schematic diagram of a first flexible circuit board of yet another foldable device provided by an embodiment of the present application in a second housing. FIG. 7 is an installation schematic diagram from another perspective of the first flexible circuit board of another foldable device provided in the second housing according to an embodiment of the present application.

As shown in Figures 5-7, and referring to Figure 4, in order to enable signal interaction between the first device 11 in the first chamber and the second device 31 in the third chamber, in the embodiment of the present application, the foldable device A first flexible circuit board 100 is also included. The first flexible circuit board 100 includes a first section 110, a second section 120, a third section 130, a fourth section 140 and a fifth section 150. The first section 110 is located in the first cavity of the first housing 10, and the third section 110 is located in the first cavity of the first housing 10. The section 130 is located in the second chamber of the second housing 20, the fifth section 150 is located in the third chamber of the third housing 30, and one end of the third section 130 in the first direction passes through the second section 120 and the first section. 110 is connected, the other end of the third section 130 in the first direction is connected to the fifth section 150 through the fourth section 140, the first section 110 is connected to the first device 11, and the fifth section 150 is connected to the second device 31, so that The first device 11 and the second device 31 are electrically connected through the first flexible circuit board 100 .

It can be understood that the first flexible circuit board 100 has a signal line extending from the first section 110 to the fifth section 150 and connecting the first device 11 and the second device 31 so that the first device 11 and the second device 31 are connected. 31 is capable of signal interaction. The signal line connecting the first device 11 and the second device 31 is routed along the first direction in the third section 130 .

It can be understood that the first device 11 can be a first circuit board, the second device 31 can be a second circuit board, components can be installed on the first circuit board, and components can be installed on the second circuit board. The components on one circuit board and the components on the second circuit board can perform signal interaction through the first flexible circuit board 100 .

It can be understood that the first device 11 and the second device 31 can also be devices such as cameras, microphones, and chips.

In the embodiment of the present application, the second housing 20 is provided with the antenna 300. The second housing 20 also includes a third side 27 and a fourth side 28 opposite in the second direction. Since the first side 25 and the second side The position of side 26 has been occupied by the installed first rotating shaft mechanism 40 and second rotating shaft mechanism 50, and the antenna 300 on the second housing 20 is provided on at least one of the third side 27 and the fourth side 28, that is to say , an antenna 300 is provided on at least one of the third side 27 and the fourth side 28 .

It is understood that the antenna 300 may be provided on both the third side 27 and the fourth side 28 . The antenna 300 may be provided on the third side 27 and the antenna 300 may not be provided on the fourth side 28 . The antenna 300 may also be provided on the fourth side 28 and the antenna 300 may not be provided on the third side 27 .

It can be understood that both ends of the antenna 300 disposed on the third side 27 and the fourth side 28 extend along the first direction. That is to say, the direction of the antenna 300 provided on the second housing 20 is in the third direction with the signal line on the first flexible circuit board 100 for signal interaction between the devices in the first housing 10 and the third housing 30 . Segment 130 runs in much the same direction.

It can be understood that when the second housing 20 includes the second middle frame 29 , the second middle frame 29 includes a third side 27 and a fourth side 28 that are opposite in the second direction.

In the related art, there is no structure for signal isolation between the third section of the first flexible circuit board and the antenna provided on the second housing. Since the direction of the antenna provided on the second housing is different from that on the first flexible circuit board, The signal lines used for signal interaction between the devices in the first housing and the third housing have roughly the same direction in the third section. The signals transmitted by the antenna provided on the second housing are the same as those used for using the first flexible circuit board. The devices in the first housing and the third housing carry out signal interaction and the signals transmitted through the signal lines are likely to interfere with each other.

FIG. 8 is a schematic diagram of some components in the first chamber, the second chamber and the third chamber of another foldable device provided by an embodiment of the present application. FIG. 9 is a further foldable device provided by an embodiment of the present application. A schematic cross-section of the first flexible circuit board of the device.

As shown in Figures 8 and 9, and with reference to Figures 4-7, based on this, in the embodiment of the present application, the foldable device further includes a conductive sheet assembly 400. The first flexible circuit board 100 includes a first surface layer 161 and a second surface layer 162 that are opposite in the thickness direction. The first surface layer 161 includes a first portion 131 located in the third section 130 , and the second surface layer 162 includes a first portion 131 located in the third section 130 . In the second part 132 , the conductive sheet assembly 400 is disposed in the second cavity of the second housing 20 . The conductive sheet assembly 400 is located on the side of the first part 131 away from the second part 132 . A grounding member 21 is fixedly connected to the second housing 20 . In the thickness direction of the second housing 20 , at least part of the first part 131 and at least part of the grounding member 21 are covered by the conductive sheet assembly 400 . The first part 131 is The area covered by the conductive sheet assembly 400 has the first ground structure 185 , and the conductive sheet assembly 400 is electrically connected to both the ground member 21 and the first ground structure 185 .

In this way, the conductive sheet assembly 400 is electrically connected to the first grounding structure 185 on the first flexible circuit board 100 through the grounding member 21 fixedly connected to the second housing 20 , so that the conductive sheet assembly 400 is grounded, and the grounded conductive sheet assembly 400 It can be used to isolate the signal transmitted by the third section 130 from the signal transmitted by the antenna 300 provided on the third side 27 and the fourth side 28, and can reduce the interference between the signal transmitted by the third section 130 and the third side 27 and the fourth side 28. Mutual interference between the signals transmitted by the antenna 300 is provided. In addition, the conductive sheet assembly 400 partially covers the first flexible circuit board 100 and partially covers the grounding member 21. The conductive sheet assembly 400 can be installed after the first flexible circuit board 100 and the grounding member 21 are assembled. The conductive sheet assembly 400 has less impact on the assembly of other components, and is more convenient to disassemble and assemble.

What can be connected is that the entire area of the first part 131 can be covered by the conductive sheet assembly 400 . It is also possible that part of the first part 131 is covered by the conductive sheet component 400 and part of the first part 131 is not covered by the conductive sheet component 400 .

It can be understood that both the grounding member 21 and the first grounding structure 185 are used for grounding.

It can be understood that the grounding member 21 can be fixedly connected to the second middle frame 29 , and the grounding member 21 can be electrically connected to the grounding area on the second middle frame 29 .

It can be understood that one or more grounding members 21 may be fixedly connected in the second housing 20 , and the conductive sheet assembly 400 may be electrically connected to one or more grounding members 21 .

It can be understood that the conductive sheet assembly 400 can be made of conductive materials such as copper, aluminum, silver, iron, etc.

For example, a communication module (not shown) may be fixedly connected to the second middle frame 29 , and the grounding member 21 may be a shielding cover provided outside the communication module.

For example, the grounding structure may be an exposed copper area of the copper foil of the first surface layer 161 of the first flexible circuit board 100 .

In this embodiment of the present application, the first flexible circuit board 100 further includes a first ground layer 163 . In the thickness direction of the first flexible circuit board 100 , the first ground layer 163 is located between the first surface layer 161 and the second surface layer 162 , and the first ground structure 185 is electrically connected to the first ground layer 163 through the first ground via 190 .

In this way, the first ground structure 163 located in the first part 131 is easily grounded.

In the embodiment of the present application, the first flexible circuit board 100 may further include a first conductive layer 164 located between the first surface layer 161 and the first ground layer 163 and a second conductive layer 164 located between the second surface layer 162 and the first ground layer 163 . At least one of the second conductive layer 165, the first conductive layer 164 and the second conductive layer 165 is a signal layer for providing a signal line.

It can be understood that the first surface layer 161, the second surface layer 162, the first ground layer 163, the first conductive layer 164 and the second conductive layer 165 are all conductive layers. The first flexible circuit board 100 includes the first surface layer 161, In addition to the second surface layer 162 , the first ground layer 163 , the first conductive layer 164 and the second conductive layer 165 , other conductive layers may also be included. Two adjacent conductive layers are connected through an insulating layer 166 .

In the embodiment of the present application, when one of the first conductive layer 164 and the second conductive layer 165 is a signal layer, the other of the first conductive layer 164 and the second conductive layer 165 may be a power supply for power supply. layer.

In the embodiment of the present application, the foldable device further includes a second flexible circuit board 200 , and the second flexible circuit board 200 is provided in the second housing 20 . A third component 22 and a fourth component 23 are also fixedly connected to the second housing 20 . The third component 22 and the fourth component 23 are respectively located on both sides of the third section 130 in the second direction. The second flexible circuit board 200 One end of the second flexible circuit board 200 is connected to the third component 22 , and the other end of the second flexible circuit board 200 is connected to the fourth component 23 .

It can be understood that the third device 22 can be a third circuit board, the fourth device 23 can be a fourth circuit board, components can be installed on the third circuit board, and components can be installed on the fourth circuit board. The components on the third circuit board and the components on the fourth circuit board can perform signal interaction through the second flexible circuit board 200 .

It can be understood that the third device 22 and the fourth device 23 can also be devices such as cameras, microphones, and chips.

For example, the distance between the third device 22 and the third side 27 is smaller than the distance between the third device 22 and the fourth side 28 , and the distance between the fourth device 23 and the third side 27 is larger than the distance between the fourth device 23 and the fourth side 28 . distance.

In the embodiment of the present application, the first flexible circuit board 100 can be connected to at least one of the third device 22 and the fourth device 23 , so that at least one of the third device 22 and the fourth device 23 can be connected to the first flexible circuit. Board 100 is electrically connected.

In the embodiment where the foldable device further includes a second flexible circuit board 200 , the second flexible circuit board 200 includes a main body part 210 , which is located on a side of the first part 131 away from the second part 132 , and the main part 210 is on the first side. The upward size is smaller than the size of the third section 130 in the first direction, and the projection of the main body portion 210 in the thickness direction of the second housing 20 is located outside the projection of the conductive sheet assembly 400 in the thickness direction of the second housing 20 . The first part 131 includes a first overlapping area 170 and a second overlapping area 180. In the thickness direction of the second housing 20, the main body part 210 covers the first overlapping area 170, and the conductive sheet assembly 400 covers the second overlapping area 180. Overlap area 180 has first ground structure 185 .

In this way, when the foldable device also includes the second flexible circuit board 200, the conductive sheet assembly 400 and the second flexible circuit board 200 are disposed in a misaligned manner, and the conductive sheet assembly 400 will not affect the overall structure due to overlapping with the second flexible circuit board 200. The thickness of the machine. In addition, the first flexible circuit board 100 and the conductive sheet assembly 400 are not easily wrinkled due to the overlapping of the second flexible circuit board 200 and the conductive sheet assembly 400 . In addition, when the battery is installed in the second housing 20 and the battery is overlapped with the first flexible circuit board 100, the first flexible circuit board 100 and the conductive sheet assembly 400, the thickness of the battery can be made larger, thereby reducing the battery's thickness. Larger capacity.

It can be understood that in the embodiment where the foldable device further includes the second flexible circuit board 200 , the first overlapping area 170 is not covered by the conductive sheet assembly 400 .

It can be understood that the second flexible circuit board 200 may also include connectors provided at both ends of the main body 210 , and the second flexible circuit board 200 may be connected to the third device 22 and the fourth device respectively through the connectors located at both ends of the main body 210 . 23 connected.

It can be understood that the second housing 20 may be provided with a plurality of second flexible circuit boards 200 distributed along the first direction, and the first part 131 includes a plurality of first flexible circuit boards 200 corresponding to the main body part 210 of the second flexible circuit board 200 . In the overlapping area 170, the main body portion 210 of each second flexible circuit board 200 covers the corresponding first overlapping area 170.

In the embodiment of the present application, the main body portion 210 is bonded and fixed to the first overlapping area 170 covering the second housing 20 in the thickness direction.

In this way, relative movement between the main body part 210 and the third section 130 is difficult to occur, and overlap between the main body part 210 and the conductive sheet assembly 400 is difficult to occur due to the displacement of the main body part 210.

For example, the main body part 210 and the first overlapping area 170 covering the thickness direction of the second housing 20 may be fixed by insulating glue.

Exemplarily, the side of the main body 210 facing the first flexible circuit board 100 has a second ground structure (not shown), and the first overlapping area 170 has a third ground structure (not shown) opposite to the second ground structure. , the second ground structure and the opposite third ground structure may be bonded through conductive adhesive, so that the main body part 210 and the first overlapping area 170 covering the thickness direction of the second housing 20 are bonded and fixed. The second flexible circuit board 200 may include a second ground layer (not shown), the second ground structure may be electrically connected to the second ground layer through a second ground via (not shown) provided on the main body 210, and a third The ground structure may be electrically connected to the first ground layer 163 of the first flexible circuit board 100 through a third ground via hole (not shown).

For example, in the second direction, the grounding member 21 is located between the third section 130 and the third side 27 , or the grounding member 21 is located between the third section 130 and the fourth side 28 . In this way, when the second flexible circuit board 200 is provided and the first overlapping area 170 has the second overlapping area 180 on both sides in the first direction, it is convenient for the conductive sheet assembly 400 to be connected to the grounding member 21 .

In the embodiment of the present application, one of the third device 22 and the fourth device 23 is located between the grounding member 21 and the third section 130 in the second direction.

In this way, the grounding member 21 is not likely to obstruct the arrangement of the second flexible circuit board 200, and the arrangement of the second flexible circuit board 200 is more convenient. In addition, when the second flexible circuit board 200 is provided and the first overlapping area 170 has the second overlapping area 180 on both sides in the first direction, it is convenient for the conductive sheet assembly 400 to be located on both sides of the main body 210 in the first direction. The side portions are connected through the portions located on the third device 22 or the fourth device 23 away from the third section 130 in the second direction. The second flexible circuit board 200 will not interfere with the conductive sheet assembly 400 located on the third device in the second direction. 22 or the part of the fourth device 23 facing away from the third section 130 causes obstruction.

In the embodiment of the present application, the second housing 20 has a battery installation slot 24, and a battery (not shown) is installed in the battery installation slot 24. The third section 130 is located on the side of the battery away from the bottom of the battery installation slot 24, The second portion 132 faces the battery.

In this way, compared with the third section 130 being installed at the bottom of the battery installation slot 24, there is no need to reserve space between the battery installed in the battery installation slot 24 and the slot wall of the battery installation slot 24 for the first flexible circuit board 100 to pass from the battery. The space penetrated in the installation groove 24 can make the size of the battery larger in at least one of the first direction and the second direction, so that the capacity of the battery is larger.

It can be understood that in the embodiment in which the second housing 20 includes a second middle frame 29 and a second back cover, the second middle frame 29 has a battery installation slot 24 on one side facing the second back cover, that is, The opening of the battery installation groove 24 faces the second back cover, and the third section 130, the main body portion 210, and the conductive sheet assembly 400 are located between the battery and the second back cover.

In some embodiments of the present application, the grounding member 21 and the conductive sheet assembly 400 are welded and fixed, so that the grounding member 21 and the conductive sheet assembly 400 are electrically connected.

In other embodiments of the present application, the grounding member 21 is bonded and fixed to the conductive sheet assembly 400 through a first conductive adhesive, so that the grounding member 21 is electrically connected to the conductive sheet assembly 400 .

In this way, the fixed connection and electrical connection between the grounding member 21 and the conductive sheet assembly 400 are more convenient. In addition, the first conductive glue can play a certain buffering role, so that the connection between the ground member 21 and the conductive sheet assembly 400 is not easily broken, causing the fixedly connected ground member 21 and the conductive sheet assembly 400 to separate.

In some embodiments of the present application, the first ground structure 185 and the conductive sheet assembly 400 are welded and fixed, so that the first ground structure 185 and the conductive sheet assembly 400 are electrically connected.

In the embodiment of the present application, the first ground structure 185 is bonded and fixed to the conductive sheet assembly 400 through a second conductive adhesive, so that the first ground structure 185 and the conductive sheet assembly 400 are electrically connected.

In this way, the fixed connection and electrical connection between the first ground structure 185 and the conductive sheet assembly 400 are more convenient. In addition, the second conductive glue can play a certain buffering role, making the connection between the first ground structure 185 and the conductive sheet assembly 400 less likely to break, causing the fixedly connected first ground structure 185 to separate from the conductive sheet assembly 400 .

Figure 10 is a schematic diagram of another conductive sheet assembly of a foldable device provided by an embodiment of the present application. Figure 11 is a schematic diagram of another conductive sheet assembly of a foldable device provided by an embodiment of the present application before it is installed on the first flexible circuit board. 12 is a schematic diagram of the installation of the first flexible circuit board and conductive sheet assembly in the second housing of yet another foldable device provided by an embodiment of the present application.

As shown in Figures 10-12, and with reference to Figures 4-7, in some embodiments of the present application, the conductive sheet assembly 400 includes a first conductive sheet 410, and the first conductive sheet 410 includes a first conductive portion 411, a The second conductive part 412 and the third conductive part 413. In the first direction, the first conductive part 411 and the second conductive part 412 are spaced apart, and the main body part 210 is provided between the first conductive part 411 and the second conductive part 412. In the second direction, the third conductive part 413 is located on the side of the first conductive part 411 and the second conductive part 412 facing the grounding member 21 . The first conductive part 411 faces one end of the grounding member 21 and the second conductive part 412 faces the ground. One end of the component 21 is connected through a third conductive part 413. The second overlapping area 180 includes a first sub-area 181 and a second sub-area 182. In the first direction, the first sub-area 181 and the second sub-area 182 are spaced apart. There is a first overlapping area 170 between them. In the thickness direction of the second housing 20 , the first conductive part 411 covers the first sub-region 181 , the second conductive part 412 covers the second sub-region 182 , and at least part of the grounding member 21 is covered by the third conductive part 413 . At least one of the first sub-region 181 and the second sub-region 182 has a first ground structure 185, at least one of the first conductive part 411 and the second conductive part 412 is electrically connected to the first ground structure 185, and the ground member 21 is connected to the first ground structure 185. The third conductive part 413 is electrically connected.

In this way, the parts of the third section 130 located on both sides of the first overlapping area 170 in the first direction can be covered by the conductive sheet assembly 400. The conductive sheet assembly 400 has a better isolation effect on signal transmission on the third section 130. In addition, the parts used to cover the first sub-region 181 and the second sub-region 182 can be installed integrally, making the installation of the conductive sheet assembly 400 more convenient. In addition, the connection area between the conductive sheet assembly 400 and the ground member 21 can be made larger, and the connection between the conductive sheet assembly 400 and the ground member 21 is more stable.

It can be understood that a gap is formed between the first conductive part 411 , the second conductive part 412 and the third conductive part 413 for avoiding the main body part 210 of the second flexible circuit board 200 .

It can be understood that the first conductive part 411, the second conductive part 412 and the third conductive part 413 are an integral structure.

It can be understood that both the first sub-region 181 and the second sub-region 182 can have the first ground structure 185 . It is also possible that the first sub-region 181 has the first ground structure 185 and the second sub-region 182 does not have the first ground structure 185 . It is also possible that the first sub-region 181 does not have the first ground structure 185 and the second sub-region 182 has the first ground structure 185 .

For example, the first conductive sheet 410 may be a copper sheet, a silver sheet, an aluminum sheet, an iron sheet, etc.

When a plurality of second flexible circuit boards 200 are arranged along the first direction in the second housing 20 , the conductive sheet assembly 400 may include a plurality of first conductive parts 411 and at least one second conductive portion 411 alternately arranged along the first direction. The conductive part 412, the second overlapping region 180 includes a plurality of first sub-regions 181 corresponding to the first conductive part 411 and at least one second sub-region 182 corresponding to the second conductive part 412, each first conductive part 411 covers The corresponding first sub-region 181 and each second conductive part 412 cover the corresponding second sub-region 182, and a gap is formed between the adjacent first conductive parts 411 and the second conductive parts 412 to avoid the second flexible circuit board. There are notches in the main body portion 210 of 200, each notch is opposite to a first overlapping area 170.

FIG. 13 is a schematic diagram before the conductive sheet assembly of another foldable device provided by an embodiment of the present application is installed on the first flexible circuit board. FIG. 14 is a first flexible circuit board of another foldable device provided by an embodiment of the present application. Schematic diagram of the installation of the circuit board and conductive sheet assembly in the second housing.

As shown in Figures 13 and 14, in some embodiments of the present application, the conductive sheet assembly 400 includes a second conductive sheet 420 and a third conductive sheet 430, and the second overlapping area 180 includes a third sub-area 183 and a fourth sub-area 183. Area 184. In the first direction, the second conductive sheet 420 and the third conductive sheet 430 are spaced apart, the main body 210 is disposed between the second conductive sheet 420 and the third conductive sheet 430, the third sub-region 183 and the fourth sub-region 184 They are arranged at intervals, and there is a first overlapping area 170 between the third sub-area 183 and the fourth sub-area 184 . In the thickness direction of the second housing 20 , the second conductive sheet 420 covers the third sub-region 183 , the third conductive sheet 430 covers the fourth sub-region 184 , and the grounding member 21 is partially covered by the second conductive sheet 420 . Covered by the third conductive sheet 430 . Both the third sub-region 183 and the fourth sub-region 184 have a first ground structure 185 , the second conductive sheet 420 is electrically connected to the first ground structure 185 of the third sub-region 183 , and the third conductive sheet 430 is electrically connected to the fourth sub-region 184 The first ground structure 185 is electrically connected, and the ground member 21 is electrically connected to both the second conductive sheet 420 and the third conductive sheet 430 .

In this way, the parts of the third section 130 located on both sides of the first overlapping area 170 in the first direction can be covered by the conductive sheet assembly 400. The conductive sheet assembly 400 has a better isolation effect on signal transmission on the third section 130. In addition, the second conductive sheet 420 and the third conductive sheet 430 are separate structures that are independent of each other, and the arrangement of the conductive sheet assembly 400 is relatively flexible.

It can be understood that a gap is formed between the second conductive sheet 420 and the third conductive sheet 430 for avoiding the main body portion 210 of the second flexible circuit board 200 .

For example, the second conductive sheet 420 may be a copper sheet, a silver sheet, an aluminum sheet, an iron sheet, etc., and the third conductive sheet 430 may be a copper sheet, a silver sheet, an aluminum sheet, an iron sheet, etc.

When a plurality of second flexible circuit boards 200 are arranged along the first direction in the second housing 20 , the conductive sheet assembly 400 may include a plurality of second conductive sheets 420 and at least one third conductive sheet 420 alternately arranged along the first direction. The conductive sheet 430, the second overlapping area 180 includes a plurality of third sub-areas 183 corresponding to the second conductive sheet 420 and at least one fourth sub-area 184 corresponding to the third conductive sheet 430, each second conductive sheet 420 covers Corresponding to the third sub-region 183, each third conductive sheet 430 covers the corresponding fourth sub-region 184, and a gap is formed between the adjacent second conductive sheets 420 and the third conductive sheet 430 to avoid the second flexible circuit board. There are notches in the main body portion 210 of 200, each notch is opposite to a first overlapping area 170.

In an embodiment in which the conductive sheet assembly 400 includes a second conductive sheet 420 and a third conductive sheet 430, both the second conductive sheet 420 and the third conductive sheet 430 may be solid sheet structures.

In an embodiment in which the conductive sheet assembly 400 includes the second conductive sheet 420 and the third conductive sheet 430 , at least one of the second conductive sheet 420 and the third conductive sheet 430 may have the same structure as the first conductive sheet 410 . That is to say, the second conductive sheet 420 may include the first conductive part 411 , the second conductive part 412 and the third conductive part 413 , and the third sub-region 183 may include the first sub-region 181 and the second sub-region 182 . The third conductive sheet 430 may also include a first conductive part 411 , a second conductive part 412 and a third conductive part 413 , and the fourth sub-region 184 may include a first sub-region 181 and a second sub-region 182 .

It can be understood that when the conductive sheet assembly 400 includes a plurality of second conductive sheets 420, the structure of one or more of the second conductive sheets 420 may be the same as the structure of the first conductive sheet 410. When the conductive sheet assembly 400 includes a plurality of third conductive sheets 430 , the structure of one or more of the third conductive sheets 430 may be the same as the structure of the first conductive sheet 410 .

In the description of the embodiments of this application, it should be noted that, unless otherwise clearly stated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a fixed connection. Indirect connection through an intermediary can be the internal connection between two elements or the interaction between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of this application can be understood according to specific circumstances.

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

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, but not to limit them; although the embodiments of the present application have been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art It should be understood that the technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features can be equivalently replaced; and these modifications or substitutions do not deviate from the essence of the corresponding technical solutions from the embodiments of the present application. The scope of the technical solutions of each embodiment.

Claims (10)

1. A foldable device, characterized in that it includes a first housing, a second housing, a third housing, a first rotating shaft mechanism, a second rotating shaft mechanism, a first flexible circuit board, an antenna and a conductive sheet assembly; The second housing includes a first side and a second side that are opposite in the first direction and a third side and a fourth side that are opposite in the second direction. The first side is connected to the first side through the first rotating shaft mechanism. The first housing is rotatably connected, the second side is rotatably connected to the third housing through the second rotating shaft mechanism, and at least one of the third side and the fourth side is provided with the Antenna, wherein the first direction and the second direction are both perpendicular to the thickness direction of the second housing, and the first direction is perpendicular to the second direction; The first flexible circuit board includes a first section, a second section, a third section, a fourth section and a fifth section, the first section is located in the first housing, and the third section is located in the first housing. In the second housing, the fifth section is located in the third housing, and one end of the third section in the first direction is connected to the first section through the second section. The third section The other end in the first direction is connected to the fifth section through the fourth section; A first component is fixedly connected to the first housing, a second component is fixedly connected to the third housing, the first section is connected to the first component, and the fifth section is connected to the second component. Connected such that the first device and the second device are electrically connected through the first flexible circuit board; The first flexible circuit board includes a first surface layer and a second surface layer that are opposite in the thickness direction, the first surface layer includes a first portion located in the third section, and the second surface layer includes a first portion located in the third section. In the second part of the segment, the conductive sheet assembly is provided in the second housing, and the conductive sheet assembly is located on the side of the first part away from the second part; A grounding piece is fixedly connected to the second housing. In the thickness direction of the second housing, at least part of the first part and at least part of the grounding piece are covered by the conductive sheet assembly. The area of the first part covered by the conductive sheet assembly has a grounding structure, and the conductive sheet assembly is electrically connected to both the grounding piece and the grounding structure. 2. The foldable device according to claim 1, further comprising a second flexible circuit board, the second flexible circuit board being disposed in the second housing; A third component and a fourth component are also fixedly connected to the second housing. The third component and the fourth component are respectively located on both sides of the third section in the second direction. One end of the second flexible circuit board is connected to the third component, and the other end of the second flexible circuit board is connected to the fourth component; The second flexible circuit board includes a main body portion located on a side of the first portion facing away from the second portion, and a size of the main body portion in the first direction is smaller than that of the third section in the first direction. The size in the first direction, the projection of the main body part in the thickness direction of the second housing is located outside the projection of the conductive sheet assembly in the thickness direction of the second housing; The first part includes a first overlapping area and a second overlapping area. In the thickness direction of the second housing, the main body part covers the first overlapping area, and the conductive sheet assembly covers the second overlapping area. area, the second overlapping area having the ground structure. 3. The foldable device according to claim 2, wherein the conductive sheet assembly includes a first conductive sheet, and the first conductive sheet includes a first conductive part, a second conductive part and a third conductive part; In the first direction, the first conductive part and the second conductive part are spaced apart, and the main body part is disposed between the first conductive part and the second conductive part; In the second direction, the third conductive part is located on the side of the first conductive part and the second conductive part facing the grounding piece, and the first conductive part faces one end of the grounding piece. It is connected to one end of the second conductive part facing the grounding member through the third conductive part; The second overlapping area includes a first sub-area and a second sub-area, the first sub-area is spaced apart from the second sub-area in the first direction, and the first sub-area is spaced apart from the second sub-area. There is the first overlapping area between the second sub-areas; In the thickness direction of the second housing, the first conductive part covers the first sub-region, the second conductive part covers the second sub-region, and at least part of the grounding member is covered by the Covered by the third conductive part; At least one of the first sub-region and the second sub-region has the ground structure, at least one of the first conductive part and the second conductive part is electrically connected to the ground structure, the The ground component is electrically connected to the third conductive part. 4. The foldable device according to claim 2, wherein the conductive sheet assembly includes a second conductive sheet and a third conductive sheet, and the second overlapping area includes a third sub-region and a fourth sub-region; In the first direction, the second conductive sheet and the third conductive sheet are spaced apart, and the main body part is disposed between the second conductive sheet and the third conductive sheet. The sub-region is spaced apart from the fourth sub-region, and there is the first overlapping region between the third sub-region and the fourth sub-region; In the thickness direction of the second housing, the second conductive sheet covers the third sub-region, the third conductive sheet covers the fourth sub-region, and a portion of the grounding piece is covered by the third sub-region. Covered by the two conductive sheets and partially covered by the third conductive sheet; Both the third sub-region and the fourth sub-region have the ground structure, the second conductive sheet is electrically connected to the ground structure of the third sub-region, and the third conductive sheet is electrically connected to the ground structure. The ground structure in the fourth sub-region is electrically connected, and the ground piece is electrically connected to both the second conductive sheet and the third conductive sheet. 5. The foldable device according to claim 2, wherein the main body part is adhesively fixed to the first overlapping area covering the thickness direction of the second housing. 6. The foldable device according to claim 2, wherein in the second direction, one of the third component and the fourth component is located between the grounding member and the third component. between paragraphs. 7. The foldable device according to any one of claims 1 to 6, wherein the second housing has a battery installation slot, a battery is installed in the battery installation slot, and the third section is located at the The side of the battery facing away from the bottom of the battery installation slot, and the second part facing the battery. 8. The foldable device according to any one of claims 1-6, wherein the first flexible circuit board further includes a ground layer; In the thickness direction of the first flexible circuit board, the ground layer is located between the first surface layer and the second surface layer, and the ground structure is electrically connected to the ground layer through a ground via hole. 9. The foldable device according to any one of claims 1 to 6, wherein the grounding piece is bonded and fixed to the conductive sheet assembly through a first conductive glue, so that the grounding piece and the conductive sheet assembly are bonded and fixed. The conductive sheet components are electrically connected. 10. The foldable device according to any one of claims 1 to 6, characterized in that the grounding structure is bonded and fixed to the conductive sheet assembly through a second conductive glue, so that the grounding structure and the conductive sheet assembly are bonded and fixed. The conductive sheet components are electrically connected.