Housing assembly and foldable electronic device

Abstract

Embodiments of the present application relate to the technical field of foldable electronic device housings, and provide a housing assembly and a foldable electronic device. The housing assembly comprises a first housing, a second housing, a third housing, and a limiting guide mechanism. The limiting guide mechanism comprises a connecting rod, and the connecting rod is connected to a first rotating shaft mechanism. During switching of the first housing and the second housing from a folded state to an unfolded state, the connecting rod moves in a first sub-direction relative to a second rotating shaft mechanism. When the first housing and the second housing are in the unfolded state, the connecting rod limits the second housing and the third housing from being folded by means of the second rotating shaft mechanism. During switching of the first housing and the second housing from the unfolded state to the folded state, the connecting rod moves in a second sub-direction relative to the second rotating shaft mechanism. When the first housing and the second housing are in the folded state, the second housing and the third housing can be folded by means of the second rotating shaft mechanism. By means of the configuration, the folding order of the first housing and the third housing relative to the second housing can be controlled.

Description

Housing assembly and folding electronic device

[0001] The present application claims priority to the Chinese patent application No. 202410898172.9, filed on July 4, 2024, and entitled "Housing assembly and folding electronic device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] Embodiments of the present application provide a housing assembly and a folding electronic device, relating to the technical field of folding electronic device housing. BACKGROUND

[0003] The folding electronic device includes a housing and a flexible display screen, the housing is connected with the flexible display screen and is used for supporting the flexible display screen. The housing can include a first housing, a second housing and a third housing, the first housing and the second housing can be unfolded or folded, and the third housing and the second housing can also be unfolded or folded.

[0004] It can be understood that the folding sequence of the first housing and the third housing relative to the second housing needs to be controlled to avoid damage to the folding electronic device caused by the folding sequence confusion. For example, the first housing and the second housing are folded, and then the third housing and the second housing are folded.

[0005] In the related art, the mechanism for controlling the folding sequence of the housing is relatively complex, which affects the transmission accuracy and thus affects the reliability of the folding of the first housing and the third housing relative to the second housing. SUMMARY

[0006] Embodiments of the present application provide a housing assembly and a folding electronic device for improving the reliability of the folding of the first housing and the third housing relative to the second housing.

[0007] In one aspect, embodiments of the present application provide a shell assembly. The shell assembly includes a first shell, a second shell, a third shell, a first hinge mechanism, a second hinge mechanism, and a limiting guide mechanism. The first hinge mechanism is connected between the first shell and the second shell, and the first shell and the second shell are unfolded or folded through the first hinge mechanism. The second hinge mechanism is connected between the second shell and the third shell, and the third shell and the second shell are unfolded or folded through the second hinge mechanism. When the first shell and the second shell are in an unfolded state and the third shell and the second shell are in an unfolded state, the first shell, the second shell, and the third shell are arranged in sequence along a first sub-direction, and the first sub-direction is a direction in which the first shell points to the third shell. When the first shell and the second shell are in a folded state and the third shell and the second shell are in a folded state, the first shell and the third shell are located on the same side of the second shell, and the first shell is located between the second shell and the third shell. The limiting guide mechanism includes a connecting rod. One end of the connecting rod is connected to the first hinge mechanism. When the second shell and the third shell are in the unfolded state, in a process in which the first shell and the second shell are switched from the folded state to the unfolded state, the first hinge mechanism drives the connecting rod to move relative to the second hinge mechanism along the first sub-direction. When the first shell and the second shell are in the unfolded state, the connecting rod limits the second shell and the third shell from being folded through the second hinge mechanism. When the second shell and the third shell are in the unfolded state, in a process in which the first shell and the second shell are switched from the unfolded state to the folded state, the first hinge mechanism drives the connecting rod to move relative to the second hinge mechanism along a second sub-direction, and the second sub-direction is opposite to the first sub-direction. When the first shell and the second shell are in the folded state, the second shell and the third shell can be folded through the second hinge mechanism.

[0008] In embodiments of the present application, one end of the connecting rod close to the first shell is connected to the first hinge mechanism, so that the first hinge mechanism can drive the connecting rod to move relative to the second hinge mechanism along the first sub-direction and the second sub-direction. Thus, when the first shell and the second shell are in the unfolded state, the connecting rod can limit the second shell and the third shell from being folded through the second hinge mechanism; and when the first shell and the second shell are in the folded state, the second shell and the third shell can be folded through the second hinge mechanism. In this way, the folding order of the first shell and the second shell relative to the third shell can be limited, and the risk of damage to the folded electronic device caused by the folding order confusion can be reduced.

[0009] Moreover, without complex structure, the transmission accuracy is improved, the folding order control is simplified, and thus the reliability of the limiting guide mechanism 130 is improved, i.e., the reliability of the first shell and the third shell relative to the second shell when being folded is improved.

[0010] In some possible implementation manners, when the second shell and the third shell are in the unfolded state, during the process in which the first shell and the second shell are switched from the first state to the unfolded state, the first rotating shaft mechanism drives the connecting rod to move relative to the second rotating shaft mechanism along a first sub-direction. When the second shell and the third shell are in the unfolded state, during the process in which the first shell and the second shell are switched from the unfolded state to the first state, the first rotating shaft mechanism drives the connecting rod to move relative to the second rotating shaft mechanism along a second sub-direction. When the first shell and the second shell are in the first state, the included angle between the first shell and the second shell is greater than 0 degrees and less than 180 degrees. In this way, the connecting rod can move at least in part of the process in which the first shell and the second shell are unfolded and folded, so as to limit the folding sequence of the first shell and the second shell relative to the third shell, and the risk that the folding sequence is disordered to cause damage to the folded electronic device is reduced.

[0011] In some possible implementation manners, the connecting rod includes a first connecting rod and a second connecting rod. One end of the first connecting rod is connected with the first rotating shaft mechanism, and the other end of the first connecting rod is connected with the second connecting rod. When the second shell and the third shell are in the unfolded state, the second connecting rod limits the folding of the second shell and the third shell through the second rotating shaft mechanism. In this way, the second connecting rod can limit the folding sequence of the first shell and the second shell relative to the third shell, and the risk that the folding sequence is disordered to cause damage to the folded electronic device is reduced. Moreover, without a complex structure, the transmission precision is improved, the folding sequence control is simplified, and therefore the reliability of the limiting and guiding mechanism is improved, that is, the reliability of the folding of the first shell and the third shell relative to the second shell is improved.

[0012] In some possible implementation manners, the first rotating shaft mechanism includes a first main shaft, a first rotating part and a second rotating part, and the first rotating part and the second rotating part are rotationally connected with the first main shaft respectively. The first shell is connected with the first rotating part, and the second shell is connected with the second rotating part. The second rotating part includes a first driven arm and a first swing connecting rod. During the process in which the first shell and the second shell are switched from the first state to the unfolded state, the first driven arm moves relative to the first swing connecting rod. During the process in which the first shell and the second shell are switched from the unfolded state to the first state, the first driven arm moves relative to the first swing connecting rod. One end of the first connecting rod is connected with the first driven arm. In this way, when the first driven arm moves relative to the first swing connecting rod, the first connecting rod can be driven to move.

[0013] In some possible implementation manners, the first driven arm moves relative to the first swing link in the first sub-direction during the process of switching the first shell and the second shell from the first state to the unfolded state. The first driven arm moves relative to the first swing link in the first sub-direction during the process of switching the first shell and the second shell from the unfolded state to the first state. In this way, the first driven arm can drive the connecting rod to move relative to the second rotary shaft mechanism in the first sub-direction during the process of switching the first shell and the second shell from the first state to the unfolded state. The first driven arm can drive the connecting rod to move relative to the second rotary shaft mechanism in the second sub-direction during the process of switching the first shell and the second shell from the unfolded state to the first state.

[0014] In some possible implementation manners, one end of the first connecting rod is fixedly connected or rotatably connected with the first driven arm. In this way, the flexibility of the connection between the first connecting rod and the first driven arm can be improved.

[0015] In some possible implementation manners, the second shell is provided with an accommodation groove near one side edge of the first shell, and the end of the first connecting rod connected with the first driven arm and the end of the first driven arm connected with the first connecting rod are located in the accommodation groove. In this way, the accommodation groove can accommodate the end of the first connecting rod connected with the first driven arm and the end of the first driven arm connected with the first connecting rod.

[0016] In some possible implementation manners, the second rotary shaft mechanism is provided with a first limiting hole. When the first shell and the second shell are in the unfolded state, the second connecting rod is at least partially located in the first limiting hole, and the folding of the second shell and the third shell through the second rotary shaft mechanism is limited. In this way, when the first shell and the second shell are in the unfolded state, the second connecting rod can lock and limit the second rotary shaft mechanism, so that the folding of the third shell and the second shell through the second rotary shaft mechanism is limited.

[0017] In some possible implementation manners, the second rotary shaft mechanism includes a second main shaft, a third rotating part and a fourth rotating part, the third rotating part and the fourth rotating part are rotatably connected with the second main shaft respectively. The second shell is connected with the third rotating part, and the third shell is connected with the fourth rotating part. The second main shaft is provided with a first hole, the first hole is located on the second main shaft, and at least one opening of the first hole faces the second shell. The third rotating part is provided with a first avoiding groove, and the first hole is at least in communication with the first avoiding groove to form the first limiting hole. In this way, the first limiting hole can be formed on the second rotary shaft mechanism, and when the third shell and the second shell are in the unfolded state, the first limiting hole can penetrate through the third rotating part in the first sub-direction.

[0018] In some possible implementation manners, the fourth rotating part is provided with a second avoiding slot, and the first hole is in communication with the first avoiding slot and the second avoiding slot to form a first limiting hole. In this way, when the third shell and the second shell are in the unfolded state, the first limiting hole can penetrate through the third rotating part, the second main shaft and the fourth rotating part along the first sub-direction.

[0019] In some possible implementation manners, the third shell is provided with a second limiting hole, and the second limiting hole is in communication with the first limiting hole. When the first shell and the second shell are in the first state, the second connecting rod penetrates through the first limiting hole, and the end of the second connecting rod away from the first rotating shaft mechanism is embedded in the second limiting hole. In this way, the second limiting hole and the first limiting hole can jointly accommodate the second connecting rod, and the limiting effect of the second connecting rod on the second rotating shaft mechanism is improved.

[0020] In some possible implementation manners, the limiting and guiding mechanism further includes a rotating connecting rod, and the rotating connecting rod is rotationally connected with the second shell. The rotating connecting rod is rotationally connected with the end of the first connecting rod away from the first rotating shaft mechanism, and the rotating connecting rod is rotationally connected with one end of the second connecting rod. Along the length extension direction of the first rotating shaft mechanism, the first connecting rod is closer to the connection position of the rotating connecting rod and the second shell relative to the second connecting rod. In this way, the rotating connecting rod can amplify the movement stroke of the first connecting rod along the first sub-direction, and the occupied space of the limiting and guiding mechanism is reduced.

[0021] In some possible implementation manners, the rotating connecting rod has a first end and a second end. The first end of the rotating connecting rod is rotationally connected with the second shell, and the second end of the rotating connecting rod is rotationally connected with the second connecting rod. The first connecting rod is rotationally connected between the first end of the rotating connecting rod and the second end of the rotating connecting rod. In this way, the first connecting rod can be closer to the connection position of the rotating connecting rod and the second shell relative to the second connecting rod, so that the rotating connecting rod can amplify the movement stroke of the first connecting rod along the first sub-direction, and the occupied space of the limiting and guiding mechanism is reduced. In addition, the length of the rotating connecting rod can be fully utilized.

[0022] In some possible implementation manners, the second shell is provided with a first limiting slot, and the rotating connecting rod is located in the first limiting slot. In the process of switching the first shell and the second shell from the first state to the unfolded state, the first connecting rod moves relative to the second rotating shaft mechanism along a first sub-direction, and the second end of the rotating connecting rod rotates in the first limiting slot from a position away from the second rotating shaft mechanism to a position close to the second rotating shaft mechanism. The second connecting rod moves relative to the second rotating shaft mechanism along the first sub-direction. In the process of switching the first shell and the second shell from the unfolded state to the first state, the first connecting rod moves relative to the second rotating shaft mechanism along a second sub-direction, and the second end of the rotating connecting rod rotates in the first limiting slot from the position close to the second rotating shaft mechanism to the position away from the second rotating shaft mechanism. The second connecting rod moves relative to the second rotating shaft mechanism along the first sub-direction. In this way, the rotation of the rotating connecting rod relative to the second shell can be limited, and the reliability of the rotating connecting rod during rotation can be improved. Moreover, the thickness of the foldable electronic device can be reduced.

[0023] In some possible implementation manners, the first limiting slot is provided with a first connecting opening and a second connecting opening, the first connecting rod is connected to the rotating connecting rod through the first connecting opening, and the second connecting rod is connected to the rotating connecting rod through the second connecting opening. In this way, the first connecting rod and the second connecting rod can be connected to the rotating connecting rod located in the first limiting slot through the first connecting opening and the second connecting opening respectively, and the influence of the first limiting slot on the rotation connection between the first connecting rod, the second connecting rod and the rotating connecting rod can be reduced.

[0024] In some possible implementation manners, the shell assembly further includes a first cover plate located on the side of the rotating connecting rod away from the second shell along the thickness direction of the second shell and shielding at least part of the opening of the first limiting slot along the thickness direction of the second shell. In this way, the first cover plate can protect the rotating connecting rod located in the first limiting slot, the end of the first connecting rod rotationally connected to the rotating connecting rod and the end of the second connecting rod rotationally connected to the rotating connecting rod, and the risk of scratching between the first connecting rod, the second connecting rod and the rotating connecting rod and other components (for example, electronic components located on the mainboard) of the foldable electronic device during movement can be reduced.

[0025] In some possible implementation manners, the rotating connecting rod is rotationally connected to the end of the first connecting rod away from the first rotating shaft mechanism, and the rotating connecting rod is rotationally connected to the end of the first connecting rod away from the first rotating shaft mechanism through a first protrusion and a first connecting hole, and the first protrusion is embedded in the first connecting hole. In this way, the rotating connecting rod and the first connecting rod can be rotationally connected, and the convenience of rotationally connecting the rotating connecting rod and the first connecting rod can be improved.

[0026] In some possible implementations, the first connecting hole has a larger diameter than the length of the first protrusion along the length extension direction of the first rotating shaft mechanism. In this way, the first connecting hole and the first protrusion can be in interference fit along the length extension direction of the first rotating shaft mechanism, thereby providing a relative movement allowance for the rotating connecting rod and the first connecting rod.

[0027] In some possible implementations, the rotating connecting rod is rotationally connected to one end of the second connecting rod, including that the rotating connecting rod is rotationally connected to one end of the second connecting rod through the second protrusion and the second connecting hole, and the second protrusion is embedded in the second connecting hole. In this way, the rotating connecting rod and the second connecting rod can be rotationally connected, and the convenience of the connection can be improved.

[0028] In some possible implementations, the second connecting hole has a larger diameter than the length of the second protrusion along the length extension direction of the first rotating shaft mechanism. In this way, the second connecting hole and the second protrusion can be in interference fit along the length extension direction of the first rotating shaft mechanism, thereby providing a relative movement allowance for the rotating connecting rod and the second connecting rod.

[0029] In some possible implementations, the second housing is provided with a second limiting slot. In the process of switching the first housing and the second housing from the first state to the unfolded state, and in the process of switching the first housing and the second housing from the unfolded state to the first state, the second connecting rod slides in the second limiting slot. In this way, the second limiting slot can limit the movement of the second connecting rod, thereby improving the reliability of the second connecting rod in movement. Moreover, the thickness of the foldable electronic device can be reduced.

[0030] In some possible implementations, the housing assembly further includes a second cover plate, which is located on the side of the second connecting rod away from the second housing along the thickness direction of the second housing, and covers at least part of the opening of the second limiting slot along the thickness direction of the second housing. In this way, the second cover plate can protect the second connecting rod located in the second limiting slot, thereby reducing the risk of scratching the second connecting rod in movement with other components (for example, electronic components located on the mainboard) of the foldable electronic device.

[0031] In some possible implementations, the number of limiting guide mechanisms is a plurality, and the plurality of limiting guide mechanisms are arranged at intervals along the length extension direction of the first rotating shaft mechanism. Understandably, the plurality of limiting guide mechanisms arranged at intervals can control the unfolding or folding sequence of the first housing and the third housing relative to the second housing at different positions along the length extension direction of the first rotating shaft mechanism, thereby improving the reliability of the unfolding or folding of the first housing and the third housing relative to the second housing at different positions.

[0032] In some possible implementation manners, when the third shell and the second shell are in the folded state, the second rotating shaft mechanism limits the connecting rod from moving relative to the second rotating shaft mechanism in the first sub-direction. When the third shell and the second shell are in the unfolded state, the connecting rod can move relative to the second rotating shaft mechanism in the first sub-direction. In this way, the unfolding sequence of the first shell and the third shell relative to the second shell can be controlled, and the first shell and the second shell can be unfolded only when the third shell and the second shell are in the unfolded state, thereby avoiding damage to the folding electronic device caused by disordered unfolding sequence of the shells.

[0033] In some possible implementation manners, when the third shell and the second shell are in the second state, the connecting rod can move relative to the second rotating shaft mechanism in the first sub-direction. When the third shell and the second shell are in the second state, the included angle between the third shell and the second shell is greater than 0° and less than 180°. In this way, the convenience of unfolding the first shell and the third shell relative to the second shell can be improved.

[0034] In another aspect, the embodiments of the present application provide a folding electronic device. The folding electronic device includes a flexible display screen and a shell assembly as described above. The flexible display screen includes a first region, a second region and a third region. The first shell is arranged correspondingly to the first region, the second shell is arranged correspondingly to the second region, and the third shell is arranged correspondingly to the third region. At least one of the first shell, the second shell and the third shell is fixedly connected to the flexible display screen. When the first shell and the second shell are in the unfolded state and the third shell and the second shell are in the unfolded state, the first region, the second region and the third region are located in the same plane. When the first shell and the second shell are in the folded state and the third shell and the second shell are in the folded state, the first region is located between the first shell and the second region, the second region is located between the first region and the second shell, and the third region is located between the first shell and the third shell.

[0035] The folding electronic device provided by the embodiments of the present application includes the shell assembly as described above, and thus has all the beneficial effects described above, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0036] FIG. 1 is a structural schematic diagram of a folding electronic device in an unfolded state according to some embodiments of the present application;

[0037] FIG. 2 is a structural schematic diagram of a folding electronic device in a half-unfolded and half-folded state according to some embodiments of the present application;

[0038] FIG. 3 is a structural schematic diagram of a folding electronic device in a folded state according to some embodiments of the present application;

[0039] FIG. 4 is an exploded structural schematic diagram of a folding electronic device according to some embodiments of the present application;

[0040] Fig. 5 is an exploded structural schematic diagram of a housing assembly according to some embodiments of the present application;

[0041] Fig. 6 is a structural schematic diagram of a first rotating shaft according to some embodiments of the present application;

[0042] Fig. 7 is a partial enlarged schematic diagram of region H1 in Fig. 6;

[0043] Fig. 8 is an exploded structural schematic diagram of Fig. 7 in some embodiments;

[0044] Fig. 9 is an exploded structural schematic diagram of Fig. 7 in other embodiments;

[0045] Fig. 10 is a partial sectional schematic diagram of Fig. 6 along direction A2-A2;

[0046] Fig. 11 is a structural schematic diagram of a first rotating shaft according to other embodiments of the present application;

[0047] Fig. 12 is a partial sectional schematic diagram of Fig. 11 along direction A3-A3;

[0048] Fig. 13 is a structural schematic diagram of a first rotating shaft mechanism according to some embodiments of the present application;

[0049] Fig. 14 is a structural schematic diagram of a first driven arm according to some embodiments of the present application;

[0050] Fig. 15 is a structural schematic diagram of a second rotating shaft mechanism according to some embodiments of the present application;

[0051] Fig. 16 is a partial enlarged schematic diagram of region H2 in Fig. 15;

[0052] Fig. 17 is an exploded structural schematic diagram of Fig. 16;

[0053] Fig. 18 is a structural schematic diagram of a second rotating shaft mechanism according to other embodiments of the present application;

[0054] Fig. 19 is a partial structural schematic diagram of a second rotating shaft mechanism according to some embodiments of the present application;

[0055] Fig. 20 is a sectional schematic diagram of Fig. 19 along direction A4-A4;

[0056] Fig. 21 is a structural schematic diagram of a limiting guide mechanism according to some embodiments of the present application;

[0057] Fig. 22 is a structural schematic diagram of a limiting guide mechanism according to other embodiments of the present application;

[0058] Fig. 23 is an exploded structural schematic diagram of a limiting guide mechanism according to some embodiments of the present application;

[0059] FIG. 24 is a schematic view of a connection relationship between the first connecting rod and the first driven arm according to some embodiments of the present application;

[0060] FIG. 25 is a schematic view of a connection relationship between the first connecting rod and the first driven arm according to some other embodiments of the present application;

[0061] FIG. 26 is a schematic view of a structure of the first connecting rod according to some embodiments of the present application;

[0062] FIG. 27 is a schematic view of a structure of the housing assembly according to some embodiments of the present application;

[0063] FIG. 28 is a partial enlarged view of an H3 region in FIG. 27;

[0064] FIG. 29 is a schematic view of a cross section of the housing assembly in FIG. 27 along an A5-A5 direction;

[0065] FIG. 30 is a partial enlarged view of an H4 region in FIG. 29;

[0066] FIG. 31 is a schematic view of a positional relationship among the first housing, the second housing and the third housing according to some embodiments of the present application;

[0067] FIG. 32 is a schematic view of a structure of the second housing and the limiting guide mechanism according to some embodiments of the present application;

[0068] FIG. 33 is a partial enlarged view of an H5 region in FIG. 32;

[0069] FIG. 34 is a schematic view of a cross section of FIG. 3 along an A1-A1 direction;

[0070] FIG. 35 is a partial enlarged view of an H6 region in FIG. 34;

[0071] FIG. 36 is a schematic view of a positional relationship among the first housing, the second housing and the third housing according to some other embodiments of the present application;

[0072] FIG. 37 is a schematic view of a positional relationship among the first housing, the second housing and the third housing according to some other embodiments of the present application;

[0073] FIG. 38 is a schematic view of a positional relationship among the first housing, the second housing and the third housing according to some other embodiments of the present application;

[0074] FIG. 39 is a schematic view of a structure of the rotating connecting rod according to some embodiments of the present application;

[0075] FIG. 40 is a schematic view of a connection relationship between the rotating connecting rod and the first connecting rod according to some embodiments of the present application;

[0076] FIG. 41 is a schematic view of a structure of the second connecting rod according to some embodiments of the present application;

[0077] FIG. 42 is a schematic view of a connection relationship between a rotating connecting rod and a second connecting rod according to some embodiments of the present application;

[0078] FIG. 43 is a schematic view of a structure of a shell assembly according to some embodiments of the present application;

[0079] FIG. 44 is a schematic view of a partial enlarged view of an H7 region in FIG. 43;

[0080] FIG. 45 is a schematic view of a sectional view of FIG. 44 along an A6-A6 direction;

[0081] FIG. 46 is a schematic view of a structure of a first cover plate according to some embodiments of the present application;

[0082] FIG. 47 is a schematic view of a structure of a second cover plate according to some embodiments of the present application. DETAILED DESCRIPTION

[0083] The technical solutions in some embodiments of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments provided in the present application, all other embodiments obtained by a person of ordinary skill in the art belong to the scope of protection of the present application.

[0084] Unless otherwise required by the context, throughout the specification and claims, the term "comprising" is to be interpreted as open, inclusive, meaning "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" are intended to mean that a particular feature, structure, material or characteristic included in at least one embodiment or example of the present application. The illustrative representation of the above terms does not necessarily mean the same embodiment or example. In addition, the specific features, structures, materials or characteristics described can be included in any one or more embodiments or examples in any appropriate manner.

[0085] Hereinafter, the terms "first", "second" are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0086] As used herein, "perpendicular," "parallel" includes the recited condition and conditions that are approximately the recited condition, the range of approximation being within an acceptable range of deviation as determined by one of ordinary skill in the art taking into account the measurement being discussed and the error associated with a particular measurement (i.e., the limitations of the measurement system). For example, "perpendicular" includes absolute perpendicular and approximately perpendicular, where the acceptable range of approximation for approximately perpendicular can be 5%.

[0087] As used herein, the terms "connected," "coupled," or the like, can mean direct contact between two components or indirect contact through one or more other components. Also, the terms "connected," "coupled," or the like, can mean fixed contact, or movable contact.

[0088] Embodiments of the present application provide a folding electronic device 200. The folding electronic device 200 can be a mobile phone, a tablet computer, a notebook computer, a smart bracelet, a smart watch, etc. Embodiments of the present application do not further limit the specific form of the folding electronic device 200.

[0089] FIG. 1 is a structural schematic diagram of a folding electronic device in an unfolded state according to some embodiments of the present application. FIG. 2 is a structural schematic diagram of a folding electronic device in a half-unfolded and half-folded state according to some embodiments of the present application. In some examples, as shown in FIGS. 1 and 2, the folding electronic device 200 includes a flexible display screen 201 and a housing assembly 100.

[0090] The housing assembly 100 is foldable. For example, the housing assembly 100 can be folded into three folds, four folds, or more folds. Embodiments of the present application take the housing assembly 100 being foldable into three folds as an example for further illustration.

[0091] FIG. 3 is a structural schematic diagram of a folding electronic device in a folded state according to some embodiments of the present application. FIG. 4 is an exploded structural schematic diagram of a folding electronic device according to some embodiments of the present application. As shown in FIGS. 3 and 4, the housing assembly 100 includes a first housing 101, a second housing 102, and a third housing 103. The widths of the first housing 101, the second housing 102, and the third housing 103 can be the same or different. The housing assembly 100 further includes a first hinge mechanism 110 and a second hinge mechanism 120.

[0092] The first rotating shaft mechanism 110 is connected between the first shell 101 and the second shell 102, and the first shell 101 and the second shell 102 are unfolded or folded through the first rotating shaft mechanism 110. The second rotating shaft mechanism 120 is connected between the second shell 102 and the third shell 103, and the third shell 103 and the second shell 102 are unfolded or folded through the second rotating shaft mechanism 120.

[0093] As shown in FIG. 3, the flexible display screen 201 includes a first area 201a, a second area 201b and a third area 201c. The first shell 101 is arranged corresponding to the first area 201a, the second shell 102 is arranged corresponding to the second area 201b, and the third shell 103 is arranged corresponding to the third area 201c. At least one of the first shell 101, the second shell 102 and the third shell 103 is fixedly connected with the flexible display screen. For example, at least a part of the first shell 101 is fixedly connected with the first area 201a, at least a part of the second shell 102 is fixedly connected with the second area 201b, and at least a part of the third shell 103 is fixedly connected with the third area 201c. For another example, at least a part of the first shell 101 is fixedly connected with the first area 201a, the second shell 102 is not fixedly connected with the second area 201b, and the third shell 103 is fixedly connected with the third area 201c.

[0094] For example, the first shell 101, the second shell 102 and the third shell 103 can be connected with the flexible display screen 201 by adhesion. Alternatively, the first shell 101, the second shell 102 and the third shell 103 can be connected with the flexible display screen 201 by other manners. The embodiments of the present application do not limit the connection manner between the first shell 101, the second shell 102, the third shell 103 and the flexible display screen 201. The connection manner between the first shell 101 and the first area 201a, the connection manner between the second shell 102 and the second area 201b, and the connection manner between the third shell 103 and the third area 201c can be the same or different.

[0095] When the electronic device 200 is in the unfolded state, that is, when the first shell 101 and the second shell 102 are in the unfolded state and the third shell 103 and the second shell 102 are in the unfolded state, the first shell 101, the second shell 102 and the third shell 103 are arranged in sequence along a first sub-direction X1, which can also be understood as a direction in which the first shell 101 points to the third shell 103. The third shell 103, the second shell 102 and the first shell 101 are arranged in sequence along a second sub-direction X2, which can also be understood as a direction in which the third shell 103 points to the first shell 101, and the second sub-direction X2 is opposite to the first sub-direction X1.

[0096] When the first housing 101 and the second housing 102 are in the unfolded state and the third housing 103 and the second housing 102 are in the unfolded state, the first region 201a, the second region 201b and the third region 201c are located in the same plane, and the first housing 101, the second housing 102 and the third housing 103 support the flexible display 201.

[0097] As shown in FIG. 3, when the electronic device 200 is in the folded state, that is, when the first housing 101 and the second housing 102 are in the folded state and the third housing 103 and the second housing 102 are in the folded state, the first housing 101 and the third housing 103 are located on the same side of the second housing 102, and the first housing 101 is located between the second housing 102 and the third housing 103. At this time, the housing assembly 100 drives the flexible display 201 to be bent, and the folded electronic device 200 is folded in a "G" shape, and the first housing 101, the second housing 102 and the third housing 103 can protect the flexible display 201.

[0098] As shown in FIG. 3, when the first housing 101 and the second housing 102 are in the folded state and the third housing 103 and the second housing 102 are in the folded state, the first region 201a is located between the first housing 101 and the second region 201b, the second region 201b is located between the first region 201a and the second housing 102, and the third region 201c is located between the first housing 101 and the third housing 103.

[0099] It can be understood that when the folded electronic device 200 is in the unfolded state, the display area of the folded electronic device 200 can be increased, and the display effect can be improved. When the electronic device 200 is in the folded state, the volume of the folded electronic device 200 can be reduced, which is convenient for carrying.

[0100] As shown in FIG. 2, when the electronic device 200 is in the half-unfolded and half-folded state, the first housing 101 and the second housing 102 are in the folded state, the third housing 103 and the second housing 102 are in the unfolded state, the second region 201b is located between the first housing 101 and the second region 201b, the second region 201b is located between the first region 201a and the second housing 102, and the third region 201c and the second region 201b are unfolded.

[0101] As shown in FIG. 3, the flexible display screen 201 can further include a first bending area 201d1 and a second bending area 201d2. At least a part of the first rotating shaft mechanism 110 can be connected to the first bending area 201d1, and the first rotating shaft mechanism 110 can drive the first bending area 201d1 to bend when the first housing 101 and the second housing 102 are folded relative to each other. At least a part of the second rotating shaft mechanism 120 can be connected to the second bending area 201d2, and the second rotating shaft mechanism 120 can drive the second bending area 201d2 to bend when the third housing 103 and the second housing 102 are folded relative to each other.

[0102] It can be understood that the substrate of the flexible display screen 201 is made of a flexible material, so that the flexible display screen 201 has a bendable characteristic. For example, the material of the substrate of the flexible display screen 201 can be polyethylene terephthalate (PET), or the substrate of the flexible display screen 201 can also be made of other flexible materials.

[0103] The flexible display screen 201 can display image information. For example, the flexible display screen 201 can be a liquid crystal display (LCD), an organic light-emitting diode (OLED) display screen, an active matrix organic light-emitting diode (AMOLED) display screen, a flexible light-emitting diode (FLED) display screen, a mini light-emitting diode (Mini LED) display screen, a micro light-emitting diode (Micro LED) display screen, a quantum dot light-emitting diode (QLED) display screen, or the like. Alternatively, the flexible display screen 201 can also be other types of display screens.

[0104] For example, when the first housing 101 and the second housing 102 are in the unfolded state, as shown in FIGS. 1 and 4, the included angle between the first housing 101 and the second housing 102 is about 180°. In other embodiments, when the first housing 101 and the second housing 102 are in the unfolded state, the angle between the first housing 101 and the second housing 102 can also deviate from 180° by a small amount, for example, 165°, 177°, or 185°, etc. This case is also considered as the first housing 101 and the second housing 102 being unfolded.

[0105] When the first housing 101 and the second housing 102 are in the folded state, as shown in FIGS. 2 and 3, the first housing 101 is located on one side of the second housing 102 along the thickness direction Z (i.e., the third direction Z) of the second housing 102. For example, the first housing 101 and the second housing 102 are folded towards the flexible display 201. In some examples, the folding manner of the first housing 101 and the second housing 102 can be referred to as “inward folding”.

[0106] When the first housing 101 and the second housing 102 are in the folded state, the included angle between the first housing 101 and the second housing 102 is about 0°, and the two are parallel or approximately parallel. In other embodiments, when the first housing 101 and the second housing 102 are in the folded state, the angle between the first housing 101 and the second housing 102 can also deviate from 0° by a small amount, for example, 5°, 10°, or 15°, etc. This case is also considered as the first housing 101 and the second housing 102 being in the folded state.

[0107] For example, when the third housing 103 and the second housing 102 are in the unfolded state, as shown in FIGS. 1 and 2, the included angle between the third housing 103 and the second housing 102 is about 180°. In other embodiments, when the third housing 103 and the second housing 102 are in the unfolded state, the angle between the third housing 103 and the second housing 102 can also deviate from 180° by a small amount, for example, 165°, 177°, or 185°, etc. This case is also considered as the third housing 103 and the second housing 102 being unfolded.

[0108] When the third housing 103 and the second housing 102 are in the folded state, as shown in FIG. 3, the third housing 103 is located on the side of the first housing 101 away from the second housing 102 along the thickness direction Z of the second housing 102. For example, the third housing 103 and the second housing 102 are folded towards the flexible display 201. In some examples, the folding manner of the third housing 103 and the second housing 102 can be referred to as “inward folding”.

[0109] When the third shell 103 and the second shell 102 are in the folded state, the included angle between the third shell 103 and the second shell 102 is about 0°, and the two are parallel or approximately parallel. In some other embodiments, when the third shell 103 and the second shell 102 are in the folded state, the angle between the third shell 103 and the second shell 102 can also deviate from 0° by a small amount, for example, 5°, 10°, or 15°, etc. In this case, the third shell 103 and the second shell 102 are also considered to be in the folded state.

[0110] It can be understood that the first shell 101 and the second shell 102 can be folded inward, and the third shell 103 and the second shell 102 can also be folded inward. In this way, when the folded electronic device 200 is in the folded state, the first shell 101 and the third shell 103 are located on the same side of the second shell 102. Therefore, it is necessary to limit the folding order of the first shell 101 and the third shell 103 relative to the second shell 102 to avoid damage to the folded electronic device 200 (such as the hinge mechanism or the flexible display 201) caused by folding order confusion.

[0111] For example, a limiting guide mechanism can be provided in linkage with the first hinge mechanism 110 and the second hinge mechanism 120 to control the unfolding or folding order of the first hinge mechanism 110 and the second hinge mechanism 120, thereby controlling the unfolding or folding order of the first shell 101 and the third shell 103 relative to the second shell 102.

[0112] For example, in the folding process of the folded electronic device 200, the first shell 101 and the second shell 102 can be folded first, and then the third shell 103 and the second shell 102 can be folded. In the unfolding process of the folded electronic device 200, the third shell 103 and the second shell 102 can be unfolded first, and then the first shell 101 and the second shell 102 can be unfolded.

[0113] In related technologies, the structure of the limiting guide mechanism is complex, and it needs to rely on elastic members and other structures for resetting, which has low transmission precision and affects the reliability of the unfolding or folding of the first shell 101 and the third shell 103 relative to the second shell 102.

[0114] The following illustrates the setting position of the limiting guide mechanism provided in some embodiments of the present application, and the cooperation relationship between the limiting guide mechanism and other components (such as the first hinge mechanism 110 and the second hinge mechanism 120).

[0115] Figure 5 is an exploded structural schematic diagram of a housing assembly according to some embodiments of the present application. Figure 6 is a structural schematic diagram of a first rotating shaft according to some embodiments of the present application. Figure 7 is an enlarged schematic diagram of the H1 region in Figure 6. In some embodiments of the present application, as shown in Figures 5, 6 and 7, the first rotating shaft mechanism 110 includes a first main shaft 113, a first rotating part 111 and a second rotating part 112, and the first rotating part 111 and the second rotating part 112 are respectively rotatably connected to the first main shaft 113. The first housing 101 is connected to the first rotating part 111, and the second housing 102 is connected to the second rotating part 112.

[0116] The first rotating part 111 and the second rotating part 112 are respectively rotatably connected to the first main shaft 113, so that the first rotating part 111 and the second rotating part 112 can respectively rotate around the first main shaft 113. The first housing 101 is connected to the first rotating part 111, and the second housing 102 is connected to the second rotating part 112. When the first housing 101 and the second housing 102 rotate relative to each other, the first rotating part 111 and the second rotating part 112 can be driven to rotate around the first main shaft 113, so that the first housing 101 and the second housing 102 can be unfolded or folded.

[0117] Figure 8 is an exploded structural schematic diagram of Figure 7 in some embodiments. For example, as shown in Figures 7 and 8, the second rotating part 112 can include a first swing link 1121, and the first swing link 1121 is fixedly connected to the second housing 102. Alternatively, the second rotating part 112 can not include the first swing link 1121, and in this case, the second rotating part 112 is connected to the second housing 102 through other structures. In some embodiments of the present application, the second rotating part 112 includes the first swing link 1121, and the embodiments are further illustrated by way of example.

[0118] Figure 9 is an exploded structural schematic diagram of Figure 7 in some other embodiments. As shown in Figures 8 and 9, the second rotating part 112 can further include a first swing arm 1122 and a first driven arm 1123. For example, one end 1122a of the first swing arm 1122 is rotatably connected to the first main shaft 113, and the other end 1122b of the first swing arm 1122 is rotatably connected to the first swing link 1121. One end 1123a of the first driven arm 1123 is rotatably connected to the first main shaft 113, and the other end 1123b of the first driven arm 1123 is slidably connected to the first swing link 1121.

[0119] The rotation axes of the first driven arm 1123 and the first swing arm 1122 on the first main shaft 113 are parallel to each other but do not coincide with each other, so that during the process in which the second housing 102 drives the first swing link 1121 to rotate around the first main shaft 113, the first driven arm 1123 and the first swing link 1121 can slide relative to each other.

[0120] In addition, during the unfolding or folding of the first housing 101 and the second housing 102, the angle between the first swing link 1121 and the first swing arm 1122 changes, so that the length of the second rotating part 112 increases or decreases, i.e., the length of the link mechanism formed by the first swing link 1121 and the first swing arm 1122 increases or decreases.

[0121] FIG. 10 is a schematic diagram of a partial cross section of FIG. 6 along A2-A2. FIG. 11 is a schematic diagram of a structure of a first rotating shaft according to some embodiments of the present application. FIG. 12 is a schematic diagram of a partial cross section of FIG. 11 along A3-A3. It can be understood that, in order to clearly show the structure of the drawings, the angles of the first rotating shaft mechanism 110 in FIG. 11 and FIG. 12 are different.

[0122] As shown in FIG. 10, FIG. 11 and FIG. 12, when the first rotating shaft 110 is in the unfolded state, the length of the link mechanism formed by the first swing link 1121 and the first swing arm 1122 is smaller than that when the first rotating shaft 110 is in the folded state.

[0123] FIG. 13 is a schematic diagram of a structure of a first rotating shaft mechanism according to some embodiments of the present application. As shown in FIG. 13, the first swing link 1121 (represented by a solid line in FIG. 13), the first swing arm 1122 (represented by a dotted line in FIG. 13) and the first driven arm 1123 (represented by a dashed line in FIG. 13) can form a slider-crank mechanism by being rotatably connected and slidably connected. When an external force acts on the first swing link 1121 to rotate it around the first main shaft 113, the first swing link 1121 drives the first driven arm 1123 to rotate, and at the same time, the first swing link 1121 also drives the first swing arm 1122 to rotate.

[0124] As shown in FIG. 13, the second rotating part 112 can further include a first support plate 1124 (represented by a double dotted line in FIG. 13), which is rotatably connected with the first swing link 1121 and slidably connected with at least one of the first swing arm 1122 or the first driven arm 1123. Taking the first support plate 1124 being slidably connected with the first swing arm 1122 as an example, when the angle between the first swing arm 1122 and the first swing link 1121 changes, the first support plate 1124 is driven to rotate relative to the first swing link 1121, so that the first support plate 1124 can support the flexible display 201 when the first housing 101 and the second housing 102 are in the unfolded state, and the first support plate 1124 can form a containing space with the first main shaft 113 for containing the flexible display 201 when the first housing 101 and the second housing 102 are in the folded state.

[0125] In other examples, the second rotating part 112 can also be other structures. It can be understood that the structures of the first rotating part 111 and the second rotating part 112 can be the same or different. The embodiments of the present application do not make further limitation on the structures of the first rotating part 111, the second rotating part 112 and the first main shaft 113.

[0126] FIG. 14 is a structural schematic diagram of the first driven arm according to some embodiments of the present application. In some examples, as shown in FIG. 14, the first driven arm 1123 can be provided with a second hole 1123a penetrating the first driven arm 1123 along the thickness direction of the first driven arm 1123. The second hole 1123a can be a rectangular hole, a cylindrical hole or a polygonal hole, and the embodiments of the present application do not make further limitation on the shape of the second hole 1123a. For example, the second hole 1123a is used to connect with the limiting guide mechanism 130.

[0127] In other examples, as shown in FIG. 7, FIG. 8 and FIG. 9, the first driven arm 1123 can also not be provided with the second hole 1123a. At this time, the limiting guide mechanism 130 can be connected with the first driven arm 1123 through other ways, for example, the connecting rod 131 of the limiting guide mechanism 130 can be integrally formed with the first driven arm 1123.

[0128] FIG. 15 is a structural schematic diagram of the second rotating shaft mechanism according to some embodiments of the present application. FIG. 16 is a partial enlarged schematic diagram of the H2 area in FIG. 15. FIG. 17 is an exploded structural schematic diagram of FIG. 16. In some examples, as shown in FIG. 15, FIG. 16 and FIG. 17, the second rotating shaft mechanism 120 includes a second main shaft 123, a third rotating part 121 and a fourth rotating part 122, and the third rotating part 121 and the fourth rotating part 122 are respectively rotationally connected with the second main shaft 123. A second shell 102 is connected with the third rotating part 121, and a third shell 103 is connected with the fourth rotating part 122.

[0129] It can be understood that the third rotating part 121 and the fourth rotating part 122 are respectively rotationally connected with the second main shaft 123, so that the third rotating part 121 and the fourth rotating part 122 can respectively rotate around the second main shaft 123. The second shell 102 is connected with the third rotating part 121, and the third shell 103 is connected with the fourth rotating part 122. When the third shell 103 and the second shell 102 relatively rotate, the third rotating part 121 and the fourth rotating part 122 can be driven to rotate around the second main shaft 123, so that the third shell 103 and the second shell 102 can be relatively unfolded or folded.

[0130] FIG. 18 is a structural schematic view of a second rotating shaft mechanism according to some embodiments of the present application. FIG. 19 is a partial structural schematic view of the second rotating shaft mechanism according to some embodiments of the present application. FIG. 20 is a sectional view of FIG. 19 along A4-A4. In some examples, as shown in FIGS. 18, 19 and 20, the second rotating shaft mechanism 120 is provided with a first limiting hole M1.

[0131] For example, the first limiting hole M1 is formed on a side of the second rotating shaft mechanism 120 away from the flexible display 201. When the third housing 103 and the second housing 102 are in the unfolded state, the first limiting hole M1 is at least partially located in the second rotating shaft mechanism 120, and an opening of the first limiting hole is directed towards the second housing 102. For example, the first limiting hole M1 can pass through the third rotating part 121, the second main shaft 123 and the fourth rotating part 122 along the first sub-direction X1, or the first limiting hole M1 can pass through the third rotating part 121 and the second main shaft 123 along the first sub-direction X1.

[0132] In some examples, as shown in FIGS. 18, 19 and 20, the second main shaft 123 is provided with a first hole 123a, the first hole 123a is located on the second main shaft 123, and at least one opening of the first hole 123a is directed towards the second housing 102. For example, the first hole 123a can pass through the second main shaft 123 along the first sub-direction X1. The third rotating part 121 is provided with a first avoiding slot 121a, and the first hole 123a is in communication with the first avoiding slot 121a to form the first limiting hole M1.

[0133] In this way, the first limiting hole M1 can be formed on the second rotating shaft mechanism 120, and when the third housing 103 and the second housing 102 are in the unfolded state, the first limiting hole M1 can pass through the third rotating part 121 along the first sub-direction X1.

[0134] In some examples, as shown in FIGS. 18, 19 and 20, the fourth rotating part 122 is provided with a second avoiding slot 122a, and the first hole 123a is in communication with the first avoiding slot 121a and the second avoiding slot 122a to form the first limiting hole M1.

[0135] In this way, when the third housing 103 and the second housing 102 are in the unfolded state, the first limiting hole M1 can pass through the third rotating part 121, the second main shaft 123 and the fourth rotating part 122 along the first sub-direction X1.

[0136] In some examples, the shell assembly 100 further comprises a limiting guide mechanism 130. In some examples, the limiting guide mechanism 130 can be located on one side of the second shell 102 along the thickness direction Z (i.e., the third direction Z) of the second shell 102. At this time, a side surface of the second shell 102 along the thickness direction Z can be provided with a receiving groove (e.g., a first limiting groove P1 and a second limiting groove P2), and the limiting guide mechanism 130 can be located in the receiving groove provided on the side of the second shell 102; or the limiting guide mechanism 130 can also be located on the side surface of the second shell 102 along the thickness direction Z. In other examples, the limiting guide mechanism 130 can be located in the receiving space surrounded by the second shell 102.

[0137] FIG. 21 is a structural schematic diagram of a limiting guide mechanism provided by some embodiments of the present application. FIG. 22 is a structural schematic diagram of a limiting guide mechanism provided by some other embodiments of the present application. FIG. 23 is an exploded structural schematic diagram of a limiting guide mechanism provided by some embodiments of the present application.

[0138] In some examples, as shown in FIGS. 21, 22 and 23, the limiting guide mechanism 130 comprises a connecting rod 131. For example, the connecting rod 131 extends along the first sub-direction X1. One end of the connecting rod 131 is connected to the first rotating shaft mechanism 110. For example, the connecting rod 131 and the first rotating shaft mechanism 110 can be fixedly connected or detachably connected.

[0139] In some examples, as shown in FIGS. 21, 22 and 23, the connecting rod 131 comprises a first connecting rod 1311 and a second connecting rod 1312. One end of the first connecting rod 1311 is connected to the first rotating shaft mechanism 110, and the other end of the first connecting rod 1311 is connected to the second connecting rod 1312.

[0140] For example, the first connecting rod 1311 and the second connecting rod 1312 can be directly connected, or the first connecting rod 1311 and the second connecting rod 1312 can be indirectly connected through other components (e.g., a rotating connecting rod 132).

[0141] In some examples, when the second shell 102 and the third shell 103 are in the unfolded state, the first connecting rod 131 is driven by the first rotating shaft mechanism 110 to move relative to the second rotating shaft mechanism 120 along the first sub-direction X1 during the process that the first shell 101 and the second shell 102 are switched from the folded state to the unfolded state. When the first shell 101 and the second shell 102 are in the unfolded state, the connecting rod 131 can limit the second shell 102 and the third shell 103 from being folded through the second rotating shaft mechanism 120.

[0142] In the process of switching the first shell 101 and the second shell 102 from the unfolded state to the folded state, the first rotating shaft mechanism 110 drives the connecting rod 131 to move relative to the second rotating shaft mechanism 120 along the second sub-direction X2 when the second shell 102 and the third shell 103 are in the unfolded state.

[0143] In some examples, in the process of switching the first shell 101 and the second shell 102 between the first state and the unfolded state, the first rotating shaft mechanism 110 drives the connecting rod 131 to move relative to the second rotating shaft mechanism 120 when the second shell 102 and the third shell 103 are in the unfolded state.

[0144] For example, in the process of switching the first shell 101 and the second shell 102 from the first state to the unfolded state, the first rotating shaft mechanism 110 drives the connecting rod 131 to move relative to the second rotating shaft mechanism 120 along the first sub-direction X1. In the process of switching the first shell 101 and the second shell 102 from the unfolded state to the first state, the first rotating shaft mechanism 110 drives the connecting rod 131 to move relative to the second rotating shaft mechanism 120 along the second sub-direction X2.

[0145] In the first state, the included angle between the first shell 101 and the second shell 102 is greater than 0° and less than 180°, for example, the included angle between the first shell 101 and the second shell 102 can be 150°, 160°, 170°. At this time, in the first state, the first shell 101 and the second shell 102 can be between the folded state and the unfolded state. It can be understood that the embodiments of the present application do not further limit the angle of the included angle between the first shell 101 and the second shell 102 in the first state.

[0146] In the process of switching the first shell 101 and the second shell 102 between the folded state and the first state, the first rotating shaft mechanism 110 can drive the connecting rod 131 to move relative to the second rotating shaft mechanism 120, or the connecting rod 131 can also not move relative to the second rotating shaft mechanism 120.

[0147] In some examples, during the process of switching the first housing 101 and the second housing 102 from the folded state to the first state, the first pivot mechanism 110 can drive the connecting rod 131 to move relative to the second pivot mechanism 120 along a first sub-direction X1, or the connecting rod 131 can not move relative to the second pivot mechanism 120. During the process of switching the first housing 101 and the second housing 102 from the first state to the unfolded state, the first pivot mechanism 110 can drive the connecting rod 131 to move relative to the second pivot mechanism 120 along a second sub-direction X2, or the connecting rod 131 can not move relative to the second pivot mechanism 120.

[0148] It can be understood that, during the process of switching the first housing 101 and the second housing 102 between the folded state and the first state, the connecting rod 131 can not move relative to the second pivot mechanism 120, so that the connecting rod 131 does not need to move in the whole process of movement of the first housing 101 and the second housing 102, the movement range of the connecting rod 131 is shortened, and the occupied space of the connecting rod 131 in the movement process is reduced.

[0149] The manner in which the first pivot mechanism 110 drives the connecting rod 131 to move relative to the second pivot mechanism 120 is exemplified below.

[0150] In some examples, during the process of switching the first housing 101 and the second housing 102 from the first state to the unfolded state, the first driven arm 1123 moves relative to the first swing link 1121. During the process of switching the first housing 101 and the second housing 102 from the unfolded state to the first state, the first driven arm 1123 moves relative to the first swing link 1121.

[0151] It can be understood that, since the rotation axis R1 of the first driven arm 1123 on the first main shaft 113 and the rotation axis R2 of the first swing arm 1122 on the first main shaft 113 do not coincide (in combination with FIG. 13), in the process of rotating the first housing 101 and the second housing 102 around the first main shaft 113, the second housing 102 can drive the first swing link 1121 to rotate around the first main shaft 113, and the first driven arm 1123 and the first swing link 1121 can slide relative to each other, so that the first driven arm 1123 can move relative to the first swing link 1121 during the process of switching the first housing 101 and the second housing 102 from the first state to the unfolded state and during the process of switching the first housing 101 and the second housing 102 from the unfolded state to the first state.

[0152] It can be understood that the first connecting rod 1311 and the first driven arm 1123 are not limited in position, that is, the first connecting rod 1311 does not affect the rotation of the first driven arm 1123 around the first main shaft 113.

[0153] One end of the first connecting rod 1311 is connected with the first driven arm 1123, so that when the first driven arm 1123 moves relative to the first swing link 1121, the first connecting rod 1311 can be driven to move.

[0154] In some examples, during the process of switching the first housing 101 and the second housing 102 from the first state to the unfolded state, the first driven arm 1123 can move relative to the first swing link 1121 along the first sub-direction X1. During the process of switching the first housing 101 and the second housing 102 from the unfolded state to the first state, the first driven arm 1123 can move relative to the first swing link 1121 along the first sub-direction X1.

[0155] In this way, during the process of switching the first housing 101 and the second housing 102 from the first state to the unfolded state, the first driven arm 1123 can drive the connecting rod 131 to move relative to the second rotating shaft mechanism 120 along the first sub-direction X1. During the process of switching the first housing 101 and the second housing 102 from the unfolded state to the first state, the first driven arm 1123 can drive the connecting rod 131 to move relative to the second rotating shaft mechanism 120 along the second sub-direction X2.

[0156] In other embodiments, during the process of switching the first housing 101 and the second housing 102 from the first state to the unfolded state, the first driven arm 1123 can also move relative to the first swing link 1121 along the length extension direction Y of the first rotating shaft mechanism 110, thereby driving the connecting rod 131 to move relative to the second rotating shaft mechanism 120 along the first sub-direction X1. During the process of switching the first housing 101 and the second housing 102 from the first state to the folded state, the first driven arm 1123 can also move relative to the first swing link 1121 along the length extension direction Y of the first rotating shaft mechanism 110, thereby driving the connecting rod 131 to move relative to the second rotating shaft mechanism 120 along the second sub-direction X2.

[0157] It can be understood that the end of the first connecting rod 1311 close to the first housing 101 can also be connected with other components in the first rotating shaft mechanism 110 that can drive the first connecting rod 1311 to move along the first sub-direction X1 and the second sub-direction X2, and the present application does not limit this. The embodiments of the present application take the example that the first connecting rod 1311 is connected with the first driven arm 1123, and continue to illustrate by example.

[0158] FIG. 24 is a schematic diagram of the connection relationship between the first connecting rod and the first driven arm according to some embodiments of the present application. FIG. 25 is a schematic diagram of the connection relationship between the first connecting rod and the first driven arm according to other embodiments of the present application. FIG. 26 is a schematic diagram of the structure of the first connecting rod according to some embodiments of the present application.

[0159] The connection between the first connecting rod 1311 and the first driven arm 1123 is described below.

[0160] In some examples, one end of the first connecting rod 1311 is fixedly connected or rotatably connected to the first driven arm 1123. In this way, the flexibility of the connection between the first connecting rod 1311 and the first driven arm 1123 can be improved.

[0161] For example, the first connecting rod 1311 is fixedly connected to the first driven arm 1123 by clamping. As shown in FIG. 26, the first connecting rod 1311 includes a connecting rod body 1311a and a connecting portion 1311b. The connecting portion 1311b is connected to the connecting rod body 1311a, and the extension direction of the connecting portion 1311b intersects the extension direction of the connecting rod body 1311a. The connecting rod body 1311a can extend along the first sub-direction X1, and the connecting portion 1311b can extend along the thickness direction Z of the second housing 102.

[0162] For example, the first connecting rod 1311 can be an integrally formed structure to improve the connection reliability of the connecting rod body 1311a and the connecting portion 1311b. The extension direction of the connecting portion 1311b intersects the extension direction of the connecting rod body 1311a, so that the connecting portion 1311b can be bent relative to the connecting rod body 1311a. For example, the extension direction of the connecting portion 1311b can be perpendicular to the extension direction of the connecting rod body 1311a, or the extension direction of the connecting portion 1311b can also be an acute angle to the extension direction of the connecting rod body 1311a.

[0163] In some examples, as shown in FIGS. 24 and 25, the connecting portion 1311b passes through the second hole 1123a formed in the first driven arm 1123 and is clamped with the first driven arm 1123.

[0164] For example, as shown in FIG. 26, the connecting portion 1311b can include a connecting portion body 1311b1 and a clamping portion 1311b2. The connecting portion body 1311b1 is connected to the connecting rod body 1311a, the clamping portion 1311b2 is connected to the side of the connecting portion body 1311b1 away from the connecting rod body 1311a, and extends along the length direction (second direction) Y of the first rotating shaft mechanism 110. The clamping portion 1311b2 protrudes from the connecting portion body 1311b1. The connecting portion 1311b can be an integrally formed structure to improve the connection reliability between the connecting portion body 1311b1 and the clamping portion 1311b2.

[0165] As shown in FIG. 24 and FIG. 25, the connecting portion body 1311b1 passes through the second hole 1123a formed on the first driven arm 1123, and the clamping portion 1311b2 can be clamped with the first driven arm 1123, so that the first connecting rod 1311 can be clamped with the first driven arm 1123, thereby enabling the first driven arm 1123 to drive the first connecting rod 1311 to move.

[0166] Alternatively, the first connecting rod 1311 and the first driven arm 1123 can also be connected by other means other than clamping. For example, the first connecting rod 1311 and the first driven arm 1123 can be integrally formed to improve the connection reliability therebetween.

[0167] FIG. 27 is a structural schematic diagram of a shell assembly provided by some embodiments of the present application. FIG. 28 is a partial enlarged schematic diagram of the H3 region in FIG. 27. It can be understood that, for the purpose of simplifying the structure of the drawings, in the drawings of the specification of the present application, for example, in FIG. 27 and FIG. 28, only the first driven arm 1123 of the first rotating shaft mechanism 110 is shown, and other components of the first rotating shaft mechanism 110 are not shown.

[0168] In some examples, as shown in FIG. 27 and FIG. 28, the second shell 102 is formed with a receiving groove Q (see FIG. 44 and FIG. 45) near one side edge of the first shell 101, and the end of the first connecting rod 1311 connected with the first driven arm 1123 and the end of the first driven arm 1123 connected with the first connecting rod 1311 are located in the receiving groove Q.

[0169] In this way, the receiving groove Q can accommodate the end of the first connecting rod 1311 connected with the first driven arm 1123 and the end of the first driven arm 1123 connected with the first connecting rod 1311.

[0170] FIG. 29 is a cross-sectional schematic diagram of the shell assembly in FIG. 27 along the A5-A5 direction. FIG. 30 is a partial enlarged schematic diagram of the H4 region in FIG. 29. FIG. 31 is a schematic diagram of the positional relationship among the first shell, the second shell and the third shell provided by some embodiments of the present application. For example, the state of the first shell 101 and the second shell 102 shown in FIG. 31 can be the first state.

[0171] In some examples, as shown in FIG. 29 and FIG. 30, when the first shell 101 and the second shell 102 are in the unfolded state, the second connecting rod 1312 restricts the second shell 102 and the third shell 103 from being folded through the second rotating shaft mechanism 120. For example, as shown in FIG. 31, when the first shell 101 and the second shell 102 are in the first state, the second connecting rod 1312 restricts the second shell 102 and the third shell 103 from being folded through the second rotating shaft mechanism 120.

[0172] The following illustrates the manner in which the second connecting rod 1312 restricts the second housing 102 and the third housing 103 from being folded by the second rotating shaft mechanism 120.

[0173] In some examples, as shown in FIGS. 29 and 30, when the first housing 101 and the second housing 102 are in the unfolded state, the second connecting rod 1312 is at least partially located in the first limiting hole M1 on the second rotating shaft mechanism 120, and restricts the third housing 103 and the second housing 102 from being folded by the second rotating shaft mechanism 120.

[0174] It can be understood that, when the first housing 101 and the second housing 102 are in the unfolded state, the end of the second connecting rod 1312 away from the first rotating shaft mechanism 110 at least protrudes from the connection position of the third rotating part 121 and the second main shaft 123 in the first sub-direction X1, so that when the first housing 101 and the second housing 102 are in the unfolded state, the second connecting rod 1312 can lock and limit the second rotating shaft mechanism 120, thereby restricting the second rotating shaft mechanism 120 from being folded, that is, restricting the third housing 103 and the second housing 102 from being folded.

[0175] For example, when the first limiting hole M1 is formed on the third rotating part 121 and the second main shaft 123, the end of the second connecting rod 1312 away from the first rotating shaft mechanism 110 can be approximately flush with the edge of the second main shaft 123 away from the third rotating part 121 when the first housing 101 and the second housing 102 are in the unfolded state.

[0176] Alternatively, when the first limiting hole M1 is formed on the third rotating part 121, the fourth rotating part 122, and the second main shaft 123, the end of the second connecting rod 1312 away from the first rotating shaft mechanism 110 can be approximately flush with the edge of the fourth rotating part 122 away from the second main shaft 123 when the first housing 101 and the second housing 102 are in the unfolded state.

[0177] It can be understood that, when the first housing 101 and the second housing 102 are in the unfolded state, the second connecting rod 1312 can also restrict the second rotating shaft mechanism 120 from being folded in other manners.

[0178] That is, when the third housing 103 and the second housing 102 are in the unfolded state, if the first housing 101 and the second housing 102 are in the unfolded state, the second connecting rod 1312 can restrict the second rotating shaft mechanism 120 from being folded, that is, restrict the third housing 103 and the second housing 102 from being folded. In other words, when the first housing 101 and the second housing 102 are in the unfolded state, the third housing 103 and the second housing 102 cannot be folded, and cannot be switched from the unfolded state to the folded state.

[0179] FIG. 32 is a structural schematic diagram of the second housing and the limiting guide mechanism. FIG. 33 is a partial enlarged schematic diagram of the H5 region in FIG. 32. FIG. 34 is a sectional schematic diagram of FIG. 3 along the A1-A1 direction. FIG. 35 is a partial enlarged schematic diagram of the H6 region in FIG. 34. It can be understood that, in order to clearly show the structure of the drawings, the flexible display screen 201 is not shown in FIG. 34 and FIG. 35.

[0180] In some examples, as shown in FIG. 32, FIG. 33, FIG. 34 and FIG. 35, the first connecting rod 131 cancels the limitation of the second rotating shaft mechanism 120 when the first housing 101 and the second housing 102 are in the folded state. For example, the second connecting rod 1312 cancels the limitation of the second rotating shaft mechanism 120 when the first housing 101 and the second housing 102 are in the folded state.

[0181] It can be understood that, as shown in FIG. 34 and FIG. 35, when the second connecting rod 1312 cancels the limitation of the second rotating shaft 120, the end of the second connecting rod 1312 away from the first rotating shaft mechanism 110 is closer to the first rotating shaft mechanism 110 relative to the connecting position of the third rotating part 121 and the second main shaft 123 along the first sub-direction X1, so that the second rotating shaft mechanism 120 can be folded, that is, the third housing 103 and the second housing 102 can be folded.

[0182] Alternatively, when the second connecting rod 1312 cancels the limitation of the second rotating shaft 120, the end of the second connecting rod 1312 away from the first housing 101 can also be separated from the first limiting hole M1, so that the second rotating shaft mechanism 120 can be folded, that is, the third housing 103 and the second housing 102 can be folded.

[0183] That is, when the third housing 103 and the second housing 102 are in the unfolded state, if the first housing 101 and the second housing 102 are in the folded state, the second connecting rod 1312 can cancel the limitation of the second rotating shaft mechanism 120, so that the third housing 103 and the second housing 102 can be folded. In other words, when the first housing 101 and the second housing 102 are in the folded state, the third housing 103 and the second housing 102 can be folded through the second rotating shaft mechanism 120. Of course, when the first housing 101 and the second housing 102 are in the folded state, the third housing 103 and the second housing 102 can also be in the unfolded state.

[0184] In the embodiments of the present application, the first connecting rod 1311 is connected to the first driven arm 1123 at one end close to the first shell 101, so that the first driven arm 1123 can drive the connecting rod 131 to move along the first sub-direction X1 and the second sub-direction X2, thereby limiting the second connecting rod 132 to fold the third shell 103 and the second shell 102 through the second rotating shaft mechanism 120 when the first shell 101 and the second shell 102 are in the unfolded state; when the first shell 101 and the second shell 102 are in the folded state, the second connecting rod 132 can cancel the limiting of the second rotating shaft 120, so that the third shell 103 and the second shell 102 can be folded through the second rotating shaft mechanism 120. In this way, the folding order of the first shell 101 and the second shell 102 relative to the third shell 103 can be limited, and the risk of damage to the folded electronic device 200 caused by the folding order confusion can be reduced.

[0185] Moreover, without complex structure, the transmission accuracy is improved, the folding order control is simplified, thereby improving the reliability of the limiting and guiding mechanism 130, that is, improving the reliability of the first shell 101 and the third shell 103 relative to the second shell 102 when folding.

[0186] In some examples, a second limiting hole (not shown in the figure) is formed on the first shell 101. The second limiting hole is in communication with the first limiting hole M1. When the first shell 101 and the second shell 102 are in the first state, the second connecting rod 1312 penetrates the first limiting hole M1, and the end of the second connecting rod 1312 away from the first rotating shaft mechanism 110 is embedded in the second limiting hole.

[0187] In this way, the second limiting hole and the first limiting hole M1 can jointly accommodate the second connecting rod 1312, thereby improving the limiting effect of the second connecting rod 1312 on the second rotating shaft mechanism 120.

[0188] In some examples, as shown in FIGS. 34 and 35, when the third shell 103 and the second shell 102 are in the folded state, the second rotating shaft mechanism 120 limits the connecting rod 131 to move along the first sub-direction X1 relative to the second rotating shaft mechanism 120. When the third shell 103 and the second shell 102 are in the unfolded state, the connecting rod 131 can move along the first sub-direction X1 relative to the second rotating shaft mechanism 120.

[0189] It can be understood that when the third shell 103 and the second shell 102 are in the folded state, the second rotating shaft mechanism 120 limits the connecting rod 131 to move along the first sub-direction X1 relative to the second rotating shaft mechanism 120. For example, the fourth rotating part 122 of the second rotating shaft mechanism 120 limits the connecting rod 131 to move along the first sub-direction X1 relative to the second rotating shaft mechanism 120.

[0190] Under the limiting action of the second rotating shaft mechanism 120, the connecting rod 131 cannot move relative to the second rotating shaft mechanism 120 along the first sub-direction X1, thereby limiting the first shell 101 and the second shell 102 from unfolding through the first rotating shaft mechanism 110. In other words, when the third shell 103 and the second shell 102 are in the folded state, the first shell 101 and the second shell 102 cannot switch from the folded state to the unfolded state.

[0191] In the process of switching the third shell 103 and the second shell 102 from the folded state to the unfolded state, the fourth rotating part 122 rotates around the second main shaft 123. When the third shell 103 and the second shell 102 are in the unfolded state, the connecting rod 131 can move relative to the second rotating shaft mechanism 120 along the first sub-direction X1. At this time, the second rotating shaft mechanism 120 cancels the limitation on the connecting rod 131, and the connecting rod 131 can move relative to the second rotating shaft mechanism 120 along the first sub-direction X1, thereby enabling the first shell 101 and the second shell 102 to unfold through the first rotating shaft mechanism 110. In other words, when the third shell 103 and the second shell 102 are in the unfolded state, the first shell 101 and the second shell 102 can switch from the folded state to the unfolded state.

[0192] With the above arrangement, the unfolding sequence of the first shell 101 and the third shell 103 relative to the second shell 102 can be controlled. When the third shell 103 and the second shell 102 are in the unfolded state, the first shell 101 and the second shell 102 can unfold, thereby avoiding damage to the folded electronic device 200 due to disordered unfolding sequence of the shells.

[0193] FIG. 36 is a schematic diagram of the positional relationship of the first shell, the second shell, and the third shell according to some embodiments of the present application. FIG. 37 is a schematic diagram of the positional relationship of the first shell, the second shell, and the third shell according to some other embodiments of the present application. FIG. 38 is a schematic diagram of the positional relationship of the first shell, the second shell, and the third shell according to yet some other embodiments of the present application. For example, the third shell 103 and the second shell 102 in FIGS. 36, 37, and 38 can be in the second state.

[0194] In some examples, the connecting rod 131 can move relative to the second rotating shaft mechanism 120 along the first sub-direction X1 when the third shell 103 and the second shell 102 are in the second state. When the third shell 103 and the second shell 102 are in the second state, the included angle between the third shell 103 and the second shell 102 is greater than 0° and less than 180°, for example, the included angle between the third shell 103 and the second shell 102 can be 150°, 160°, 170°, at this time, when the third shell 103 and the second shell 102 are in the second state, the third shell 103 and the second shell 102 can be between the folded state and the unfolded state. It can be understood that the embodiments of the present application do not further limit the angle of the included angle between the third shell 103 and the second shell 102 when the third shell 103 and the second shell 102 are in the second state.

[0195] When the third shell 103 and the second shell 102 are in the second state, the connecting rod 131 can move relative to the second rotating shaft mechanism 120 along the first sub-direction X1, which can improve the convenience of unfolding the first shell 101 and the third shell 103 relative to the second shell 102.

[0196] FIG. 39 is a structural schematic view of a rotating connecting rod provided by some embodiments of the present application. In some examples, as shown in FIG. 39, the limiting and guiding mechanism 130 further includes a rotating connecting rod 132, for example, the rotating connecting rod 132 can be rotatably connected with the second shell 102 in the third direction Z (see FIGS. 32 and 33). As shown in FIGS. 21 and 22, the rotating connecting rod 132 is rotatably connected with one end of the first connecting rod 1311 away from the first rotating shaft mechanism 110, and the rotating connecting rod 132 is rotatably connected with one end of the second connecting rod 1312.

[0197] In combination with FIG. 5, the rotating connecting rod 132 can be rotatably connected with the second shell 102 through a bolt S. For example, as shown in FIG. 39, a first connecting screw hole 1305 can be formed on the rotating connecting rod 132, and the bolt S passes through the first connecting screw hole 1305 to be connected with the second shell 102, so that the rotating connecting rod 132 can be rotatably connected with the second shell 102. For example, the first connecting screw hole 1305 can be formed at the end or the middle of the rotating connecting rod 132.

[0198] It can be understood that, in the process that the first connecting rod 1311 is driven by the first rotating shaft mechanism 110 to move relative to the second rotating shaft mechanism 120 along the first sub-direction X1, the first connecting rod 1311 rotates relative to the rotating connecting rod 132, and the first connecting rod 1311 can drive the rotating connecting rod 132 to rotate relative to the second shell 102. In the process of rotation, the rotating connecting rod 132 can drive the second connecting rod 1312 to move relative to the second rotating shaft mechanism 120 along the first sub-direction X1, and relative rotation can occur between the rotating connecting rod 132 and the second connecting rod 1312, so that the second connecting rod 1312 can extend into the first limiting hole M1 and lock the second rotating shaft mechanism 120.

[0199] In the process that the first connecting rod 1311 is driven by the first rotating shaft mechanism 110 to move relative to the second rotating shaft mechanism 120 along the second sub-direction X2, the first connecting rod 1311 rotates relative to the rotating connecting rod 132, and the first connecting rod 1311 can drive the rotating connecting rod 132 to rotate relative to the second shell 102. In the process of rotation, the rotating connecting rod 132 can drive the second connecting rod 1312 to move relative to the second rotating shaft mechanism 120 along the second sub-direction X2, and relative rotation can occur between the rotating connecting rod 132 and the second connecting rod 1312, so that the second connecting rod 1312 can cancel the limiting of the second rotating shaft mechanism 120.

[0200] FIG. 40 is a schematic view of the connection relationship between the rotating connecting rod and the first connecting rod according to some embodiments of the present application. FIG. 41 is a schematic view of the structure of the second connecting rod according to some embodiments of the present application. FIG. 42 is a schematic view of the connection relationship between the rotating connecting rod and the second connecting rod according to some embodiments of the present application. In some examples, as shown in FIGS. 40, 41 and 42, along the length extension direction (second direction) Y of the first rotating shaft mechanism 110, the first connecting rod 1311 is closer to the connection position of the rotating connecting rod 132 and the second shell 102 relative to the second connecting rod 1312.

[0201] The first connecting rod 1311 and the second connecting rod 1312 are respectively connected in rotation with the rotating connecting rod 132, and along the length extension direction (second direction) Y of the first rotating shaft mechanism 110, the first connecting rod 1311 can be closer to the connection position of the rotating connecting rod 132 and the second shell 102 relative to the second connecting rod 1312, so that the rotating connecting rod 132 can amplify the movement stroke of the first connecting rod 1311 along the first sub-direction X1, and the occupied space of the limiting and guiding mechanism 130 is reduced.

[0202] In some examples, as shown in FIGS. 39 and 40, the rotating connecting rod 132 has oppositely arranged first and second ends 132a and 132b, the first end 132a of the rotating connecting rod 132 is rotationally connected to the second housing 102, and the second end 132b of the rotating connecting rod 132 is rotationally connected to the second connecting rod 1312. The first connecting rod 1311 is rotationally connected between the first end 132a of the rotating connecting rod 132 and the second end 132b of the rotating connecting rod 132.

[0203] In this way, the first connecting rod 1311 can be closer to the connection position of the rotating connecting rod 132 and the second housing 102 relative to the second connecting rod 1312, so that the rotating connecting rod 132 can amplify the movement stroke of the first connecting rod 1311 along the first sub-direction X1, and reduce the occupied space of the limiting and guiding mechanism 130. In addition, the length of the rotating connecting rod 132 can be fully utilized.

[0204] In other examples, the first end 132a of the rotating connecting rod 132 is rotationally connected to one of the first and second connecting rods 1311 and 1312, and the second end 132b of the rotating connecting rod 132 is rotationally connected to the other one of the first and second connecting rods 1311 and 1312. The middle region (between the first end 132a and the second end 132b of the rotating connecting rod 132) of the rotating connecting rod 132 is rotationally connected to the second housing 102, and the first connecting rod 1311 is closer to the connection position of the rotating connecting rod 132 and the second housing 102 relative to the second connecting rod 1312.

[0205] In this way, the rotating connecting rod 132 can also amplify the movement stroke of the first connecting rod 1311 along the first sub-direction X1, and reduce the occupied space of the limiting and guiding mechanism 130.

[0206] FIG. 43 is a structural schematic view of a housing assembly according to some other embodiments of the present application. FIG. 44 is a partial enlarged view of the H7 region in FIG. 43. FIG. 45 is a sectional view of FIG. 44 along the A6-A6 direction. In some examples, as shown in FIGS. 43, 44 and 45, the second housing 102 is provided with a first limiting groove P1, and the rotating connecting rod 132 is located in the first limiting groove P1. For example, along the thickness direction Z (i.e., the third direction Z) of the second housing 102, the rotating connecting rod 132 can be located in the first limiting groove P1 entirely or partially.

[0207] In the process of switching the first shell 101 and the second shell 102 from the folded state to the unfolded state, or in the process of switching the first shell 101 and the second shell 102 from the first state to the unfolded state, the first connecting rod 1311 moves relative to the second rotating shaft mechanism 120 along the first sub-direction X1, and the second end 132b of the rotating connecting rod 132 rotates in the first limiting groove P1 from a position away from the second rotating shaft mechanism 120 to a position close to the second rotating shaft mechanism 120. The second connecting rod 1312 moves relative to the second rotating shaft mechanism 120 along the first sub-direction X1.

[0208] In the process of switching the first shell 101 and the second shell 102 from the unfolded state to the folded state, or in the process of switching the first shell 101 and the second shell 102 from the unfolded state to the first state, the first connecting rod 1311 moves relative to the second rotating shaft mechanism 120 along the second sub-direction X2, and the second end 132b of the rotating connecting rod 132 rotates in the first limiting groove P1 from a position close to the second rotating shaft mechanism 120 to a position away from the second rotating shaft mechanism 120. The second connecting rod 1312 moves relative to the second rotating shaft mechanism 120 along the second sub-direction X2.

[0209] For example, when the first end 132a of the rotating connecting rod 132 is rotationally connected to the second shell 102, the first limiting groove P1 can be a triangular recess, so that the first limiting groove P1 can limit the rotation of the rotating connecting rod 132. When the middle part of the rotating connecting rod 132 is rotationally connected to the second shell 102, the first limiting groove P1 can be a recess of other shapes. The embodiments of the present application do not limit the shape of the first limiting groove P1.

[0210] By opening the first limiting groove P1 on the second shell 102, the rotation of the rotating connecting rod 132 relative to the second shell 102 can be limited, and the reliability of the rotating connecting rod 132 during rotation can be improved. Moreover, the thickness of the folded electronic device 200 can be reduced.

[0211] In some examples, as shown in FIGS. 44 and 45, the first limiting groove P1 has a first connecting opening P1a and a second connecting opening P1b, the first connecting rod 1311 is connected to the rotating connecting rod 132 through the first connecting opening P1a, and the second connecting rod 1312 is connected to the rotating connecting rod 132 through the second connecting opening P1b.

[0212] In this way, the first connecting rod 1311 and the second connecting rod 1312 can be connected to the rotating connecting rod 132 located in the first limiting groove P1 through the first connecting opening P1a and the second connecting opening P1b respectively, and the influence of the first limiting groove P1 on the rotation of the first connecting rod 1311 and the second connecting rod 1312 relative to the rotating connecting rod 132 is reduced.

[0213] In some examples, the first limiting slot P1 can also not be provided with the first connecting opening P1a and the second connecting opening P1b, and the first connecting rod 1311 and the second connecting rod 1312 are connected to the rotating connecting rod 132 through openings of the first limiting slot P1 along the thickness direction Z of the second housing 102.

[0214] FIG. 46 is a structural schematic diagram of a first cover plate provided in some embodiments of the present application. In some examples, as shown in FIG. 46, the housing assembly 100 further includes a first cover plate 104, which is located on the side of the rotating connecting rod 132 away from the second housing 102 along the thickness direction Z of the second housing 102, and covers at least part of the opening of the first limiting slot P1 along the thickness direction Z of the second housing 102.

[0215] It can be understood that the first cover plate 104 can completely cover the opening of the first limiting slot P1 along the thickness direction Z of the second housing 102, and in this case, the shape of the first cover plate 104 can be the same as the shape of the opening of the first limiting slot P1. Alternatively, the first cover plate 104 can also partially cover the opening of the first limiting slot P1 along the thickness direction Z of the second housing 102.

[0216] As shown in FIG. 46, the first cover plate 104 can be provided with a second connecting screw hole 104a, and a connecting screw S (see FIG. 5) passes through the second connecting screw hole 104a and is connected to the second housing 102, thereby reducing the risk of the first cover plate 104 being offset or shaken relative to the second housing 102.

[0217] It can be understood that by setting the first cover plate 104 to cover at least part of the opening of the first limiting slot P1 along the thickness direction Z of the second housing 102, the first cover plate 104 can protect the rotating connecting rod 132 located in the first limiting slot P1, the end of the first connecting rod 1311 connected to the rotating connecting rod 132, and the end of the second connecting rod 1312 connected to the rotating connecting rod 132, thereby reducing the risk of the first connecting rod 1311, the second connecting rod 1312 and the rotating connecting rod 132 being scratched by other components (such as electronic components located on the main board) of the foldable electronic device 200 during movement.

[0218] In some examples, as shown in FIGS. 43 and 44, the second housing 102 is provided with a second limiting slot P2. For example, along the thickness direction Z (i.e., the third direction Z) of the second housing 102, the second connecting rod 1312 can be entirely located in the second limiting slot P2, or the second connecting rod 1312 can be partially located in the second limiting slot P2. The second limiting slot P2 can be a cuboid limiting slot, or the second limiting slot P2 can also be a limiting slot of other shapes.

[0219] In the switching process of the first housing 101 and the second housing 102 between the first state and the unfolded state, the second connecting rod 1312 slides in the second limiting slot P2. That is, in the switching process of the first housing 101 and the second housing 102 from the first state to the unfolded state, and in the switching process of the first housing 101 and the second housing 102 from the unfolded state to the first state, the second connecting rod 1312 slides in the second limiting slot P2. In this way, the second limiting slot P2 can limit the movement of the second connecting rod 1312, improving the reliability of the second connecting rod 1312 when moving. Moreover, it can help to reduce the thickness of the foldable electronic device 200.

[0220] FIG. 47 is a structural schematic view of a second cover plate provided in some embodiments of the present application. In some examples, as shown in FIG. 47, the housing assembly 100 further includes a second cover plate 105, which is located on the side of the second connecting rod 1312 away from the second housing 102 along the thickness direction Z of the second housing 102, and covers at least part of the opening of the second limiting slot P2 along the thickness direction Z of the second housing 102.

[0221] It can be understood that the second cover plate 105 can completely cover the opening of the second limiting slot P2 along the thickness direction Z of the second housing 102, in which case the shape of the second cover plate 105 can be the same as the shape of the opening of the second limiting slot P2. Alternatively, the second cover plate 105 can also partially cover the opening of the second limiting slot P2 along the thickness direction Z of the second housing 102. For example, the shape of the second cover plate 105 can be triangular or approximately triangular.

[0222] As shown in FIG. 47, the second cover plate 105 can be provided with a third connecting screw hole 105a, and a connecting bolt S (see FIG. 5) passes through the third connecting screw hole 105a and is connected to the second housing 102, reducing the risk of offset or shaking of the second cover plate 105 relative to the second housing 102.

[0223] By setting the second cover plate 105 to close at least part of the opening of the second limiting slot P2 along the thickness direction Z of the second housing 102, the second cover plate 105 can protect the second connecting rod 1312 located in the second limiting slot P2, reducing the risk of scratching between the second connecting rod 1312 and other components (such as electronic components located on the mainboard) of the foldable electronic device 200 when moving.

[0224] In some examples, as shown in FIGS. 39 and 40, the rotating connecting rod 132 is rotatably connected to the first connecting rod 1311 away from the first shell 101, including that the rotating connecting rod 132 is rotatably connected to the first connecting rod 1311 away from the first shell 101 through the first protrusion 1301 and the first connecting hole 1302, and the first protrusion 1301 is embedded in the first connecting hole 1302.

[0225] It can be understood that the first protrusion 1301 is arranged on one of the rotating connecting rod 132 and the first connecting rod 1311, and the first connecting hole 1302 is arranged on the other one. For example, as shown in FIGS. 39 and 40, the first protrusion 1301 is arranged on the rotating connecting rod 132, and the first connecting hole 1302 is arranged on the first connecting rod 1311. Alternatively, the first protrusion 1301 is arranged on the first connecting rod 1311, and the first connecting hole 1302 is arranged on the rotating connecting rod 132. The first protrusion 1301 is embedded in the first connecting hole 1302, so that the rotating connecting rod 132 and the first connecting rod 1311 can be rotatably connected, and the convenience of the rotatable connection between the two can be improved.

[0226] For example, the shape of the first protrusion 1301 can be cylindrical or prismatic, or the shape of the first protrusion 1301 can also be conical, pyramidal or other irregular shapes.

[0227] In some examples, as shown in FIG. 40, along the length extension direction Y (i.e. the second direction Y) of the first rotating shaft mechanism 110, the hole diameter of the first connecting hole 1302 is greater than the length of the first protrusion 1302. It can be understood that the length of the rotating connecting rod 132 will change in the second direction Y during the rotation of the rotating connecting rod 132 relative to the second shell 102. When the rotating connecting rod 132 is rotated to a position parallel or approximately parallel to the second direction Y, the length of the rotating connecting rod 132 in the second direction Y is greater than the length of the rotating connecting rod 132 in the second direction Y when the rotating connecting rod 132 is rotated to a position having an included angle between the second direction Y.

[0228] In this way, the hole diameter of the first connecting hole 1302 is greater than the length of the first protrusion 1302 along the second direction Y, so that the first connecting hole 1302 and the first protrusion 1301 can be interference fit in the second direction Y, thereby providing a relative motion allowance for the rotating connecting rod 132 and the first connecting rod 1311.

[0229] In some examples, as shown in FIGS. 41 and 42, the rotating connecting rod 132 is rotatably connected to one end of the second connecting rod 1312, including that the rotating connecting rod 132 and the second connecting rod 1312 are rotatably connected through the second protrusion 1303 and the second connecting hole 1304, and the second protrusion 1303 is embedded in the second connecting hole 1304.

[0230] It can be understood that the second protrusion 1303 is arranged on one of the rotating connecting rod 132 and the second connecting rod 1312, and the second connecting hole 1304 is arranged on the other one. For example, as shown in FIG. 42, the second protrusion 1303 is arranged on the rotating connecting rod 132, and the second connecting hole 1304 is arranged on the second connecting rod 1312. Alternatively, the second connecting hole 1304 is arranged on the rotating connecting rod 132, and the second protrusion 1303 is arranged on the second connecting rod 1312.

[0231] For example, the shape of the second protrusion 1303 can be cylindrical or prismatic, or the shape of the second protrusion 1303 can also be conical, pyramidal or other irregular shapes.

[0232] The second protrusion 1303 can be embedded in the second connecting hole 1304, so that the rotating connecting rod 132 and the second connecting rod 1312 can be rotatably connected, and the convenience of connection between the two can be improved.

[0233] In some examples, as shown in FIG. 42, along the length extension direction Y (i.e. the second direction Y) of the first rotating shaft mechanism 110, the hole diameter of the second connecting hole 1304 is greater than the length of the second protrusion 1303.

[0234] It can be understood that the hole diameter of the first connecting hole 1304 is greater than the length of the second protrusion 1303 along the second direction Y, so that the second connecting hole 1304 and the second protrusion 1303 can be interference fit in the second direction Y, thereby providing a relative movement allowance for the rotating connecting rod 132 and the second connecting rod 1312.

[0235] In some examples, the number of the limiting guide mechanism 130 is multiple, and multiple limiting guide mechanisms 130 can be arranged at intervals along the length extension direction (second direction) Y of the first rotating shaft mechanism 110.

[0236] The structures of the multiple limiting guide mechanisms 130 can be the same or different. It can be understood that the above-mentioned embodiments of the present application have illustrated the structure cooperation relationship between one limiting guide mechanism 130 and the first rotating shaft mechanism 110 and the second rotating shaft mechanism 120. Among the multiple limiting guide mechanisms 130, the structure cooperation relationship between each limiting guide mechanism 130 and the first rotating shaft mechanism 110 and the second rotating shaft mechanism 120 is the same as or similar to the above-mentioned embodiments, which will not be repeated here.

[0237] As shown in FIG. 27, the number of the limiting guide mechanisms 130 is two, and the two limiting guide mechanisms 130 are arranged adjacent to the two side edges of the second housing 102 along the length extension direction (the second direction) Y of the first rotating shaft mechanism 110, and the two limiting guide mechanisms 130 can be arranged in axial symmetry along the second direction Y. Alternatively, the number of the limiting guide mechanisms 130 can also be three, four or more. The number of the limiting guide mechanisms 130 is not limited further in the embodiments of the present application.

[0238] It can be understood that the plurality of limiting guide mechanisms 130 arranged at intervals can control the unfolding or folding sequence of the first housing 101 and the third housing 103 relative to the second housing 102 at different positions along the length extension direction of the first rotating shaft mechanism 110, and improve the reliability of the unfolding or folding of the first housing 101 and the third housing 103 relative to the second housing 102 at different positions.

[0239] The above merely provides the specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any modification or substitution within the technical scope disclosed by the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A housing assembly (100) characterized by, Comprise: A first shell (101), a second shell (102) and a third shell (103); A first rotating shaft mechanism (110) and a second rotating shaft mechanism (120); the first rotating shaft mechanism (110) is connected between the first shell (101) and the second shell (102), and the first shell (101) and the second shell (102) are unfolded or folded through the first rotating shaft mechanism (110); the second rotating shaft mechanism (120) is connected between the second shell (102) and the third shell (103), and the third shell (103) and the second shell (102) are unfolded or folded through the second rotating shaft mechanism (120); when the first shell (101) and the second shell (102) are in an unfolded state, and the third shell (103) and the second shell (102) are in an unfolded state, the first shell (101), the second shell (102) and the third shell (103) are arranged in sequence along a first sub-direction (X1), and the first sub-direction (X1) is a direction in which the first shell (101) points to the third shell (103); when the first shell (101) and the second shell (102) are in a folded state, and the third shell (103) and the second shell (102) are in a folded state, the first shell (101) and the third shell (103) are located on the same side of the second shell (102), and the first shell (101) is located between the second shell (102) and the third shell (103); and A limiting guide mechanism (130) comprising a connecting rod (131); one end of the connecting rod (131) is connected with the first rotating shaft mechanism (110); When the second shell (102) and the third shell (103) are in an unfolded state, in the process that the first shell (101) and the second shell (102) are switched from a folded state to an unfolded state, the first rotating shaft mechanism (110) drives the connecting rod (131) to move relative to the second rotating shaft mechanism (120) along a first sub-direction (X1); when the first shell (101) and the second shell (102) are in the unfolded state, the connecting rod (131) limits the second shell (102) and the third shell (103) from being folded through the second rotating shaft mechanism (120); When the second shell (102) and the third shell (103) are in the unfolded state, the first shell (101) and the second shell (102) are switched from the unfolded state to the folded state, and the first rotating shaft mechanism (110) drives the connecting rod (131) to move relative to the second rotating shaft mechanism (120) along the second sub-direction (X2).

2. The housing assembly (100) of claim 1, wherein, When the second shell (102) and the third shell (103) are in the unfolded state, the first shell (101) and the second shell (102) are switched from the unfolded state to the folded state, and the first rotating shaft mechanism (110) drives the connecting rod (131) to move relative to the second rotating shaft mechanism (120) along the second sub-direction (X2). When the second shell (102) and the third shell (103) are in the unfolded state, the first shell (101) and the second shell (102) are switched from the unfolded state to the folded state, and the first rotating shaft mechanism (110) drives the connecting rod (131) to move relative to the second rotating shaft mechanism (120) along the second sub-direction (X2). When the first shell (101) and the second shell (102) are in the first state, the included angle between the first shell (101) and the second shell (102) is greater than 0 degrees and less than 180 degrees.

3. The housing assembly (100) of claim 2, wherein, The connecting rod (131) comprises a first connecting rod (1311) and a second connecting rod (1312); one end of the first connecting rod (1311) is connected with the first rotating shaft mechanism (110), and the other end of the first connecting rod (1311) is connected with the second connecting rod (1312); When the first shell (101) and the second shell (102) are in the unfolded state, the second connecting rod (1312) restricts the second shell (102) and the third shell (103) from being folded through the second rotating shaft mechanism (120).

4. The housing assembly (100) of claim 3, wherein, The first rotating shaft mechanism (110) comprises a first main shaft (113), a first rotating part (111) and a second rotating part (112), and the first rotating part (111) and the second rotating part (112) are respectively rotatably connected with the first main shaft (113); the first shell (101) is connected with the first rotating part (111), and the second shell (102) is connected with the second rotating part (112); The second rotating part (112) comprises a first driven arm (1123) and a first swing connecting rod (1121); during the process of switching from the first state to the unfolded state, the first driven arm (1123) moves relative to the first swing connecting rod (1121); during the process of switching from the unfolded state to the first state, the first driven arm (1123) moves relative to the first swing connecting rod (1121). One end of the first connecting rod (1311) is connected with the first driven arm (1123).

5. The housing assembly (100) of claim 4, wherein, During the process of switching from the first state to the unfolded state, the first driven arm (1123) moves relative to the first swing connecting rod (1121) along the first sub-direction (X1); during the process of switching from the unfolded state to the first state, the first driven arm (1123) moves relative to the first swing connecting rod (1121) along the first sub-direction (X1).

6. The housing assembly (100) according to claim 4 or 5, characterized in that One end of the first connecting rod (1311) is fixedly connected or rotatably connected with the first driven arm (1123).

7. The housing assembly (100) according to any one of claims 4 to 6, characterized in that The second shell (102) is provided with an accommodating groove (Q) near one side edge of the first shell (101), and one end of the first connecting rod (1311) connected with the first driven arm (1123) and one end of the first driven arm (1123) connected with the first connecting rod (1311) are located in the accommodating groove (Q).

8. The housing assembly (100) according to any one of claims 3 to 7, characterized in that The second rotating shaft mechanism (120) is provided with a first limiting hole (M1); When the first shell (101) and the second shell (102) are in the unfolded state, the second connecting rod (1312) is at least partially located in the first limiting hole (M1) and limits the second shell (102) and the third shell (103) from being folded through the second rotating shaft mechanism (120).

9. The housing assembly (100) of claim 8, characterized by The second rotating shaft mechanism (120) comprises a second main shaft (123), a third rotating part (121) and a fourth rotating part (122), the third rotating part (121) and the fourth rotating part (122) are rotatably connected with the second main shaft (123); the second shell (102) is connected with the third rotating part (121), and the third shell (103) is connected with the fourth rotating part (122). The second main shaft (123) is provided with a first hole (123a), the first hole (123a) is located on the second main shaft (123), and at least one opening of the first hole (123a) faces the second shell (102); the third rotating part (121) is provided with a first avoiding groove (121a), and the first hole (123a) is in communication with the first avoiding groove (121a) to form the first limiting hole (M1).

10. The housing assembly (100) of claim 9, characterized by The fourth rotating part (122) is provided with a second avoiding slot (122a), and the first hole (123a) is communicated with the first avoiding slot (121a) and the second avoiding slot (122a) to form the first limiting hole (M1).

11. The housing assembly (100) according to claim 9 or 10, characterized in that The third shell (103) is provided with a second limiting hole, and the second limiting hole is communicated with the first limiting hole (M1); When the first shell (101) and the second shell (102) are in the first state, the second connecting rod (1312) penetrates through the first limiting hole (M1), and the end of the second connecting rod (1312) away from the first rotating shaft mechanism (110) is embedded in the second limiting hole.

12. The housing assembly (100) according to any one of claims 3 to 11, characterized in that The limiting guide mechanism (130) further comprises: A rotating connecting rod (132) is rotationally connected with the second shell (102); the rotating connecting rod (132) is rotationally connected with one end of the first connecting rod (1311) away from the first rotating shaft mechanism (110), and the rotating connecting rod (132) is rotationally connected with one end of the second connecting rod (1312); Along the length extension direction (Y) of the first rotating shaft mechanism (110), the first connecting rod (1311) is closer to the connection position of the rotating connecting rod (132) and the second shell (102) relative to the second connecting rod (1312).

13. The housing assembly (100) of claim 12, characterized by The rotating connecting rod (132) has a first end (132a) and a second end (132b); The first end (132a) of the rotating connecting rod (132) is rotationally connected with the second shell (102), and the second end (132b) of the rotating connecting rod (132) is rotationally connected with the second connecting rod (1312); and the first connecting rod (1311) is rotationally connected between the first end (132a) of the rotating connecting rod (132) and the second end (132b) of the rotating connecting rod (132).

14. The housing assembly (100) of claim 13, characterized by The second shell (102) is provided with a first limiting slot (P1), and the rotating connecting rod (132) is located in the first limiting slot (P1); During the process that the first shell (101) and the second shell (102) are switched from the first state to the unfolded state, the first connecting rod (1311) moves relative to the second rotating shaft mechanism (120) along the first sub-direction (X1), the second end (132b) of the rotating connecting rod (132) rotates in the first limiting slot (P1) from a position away from the second rotating shaft mechanism (120) to a position close to the second rotating shaft mechanism (120); and the second connecting rod (1312) moves relative to the second rotating shaft mechanism (120) along the first sub-direction (X1). In the process that the first shell (101) and the second shell (102) are switched from the unfolded state to the first state, the first connecting rod (1311) moves relative to the second rotating shaft mechanism (120) along the second sub-direction (X2), and the second end (132b) of the rotating connecting rod (132) rotates from a position close to the second rotating shaft mechanism (120) to a position away from the second rotating shaft mechanism (120) in the first limiting groove (P1); the second connecting rod (1312) moves relative to the second rotating shaft mechanism (120) along the first sub-direction (X1).

15. The housing assembly (100) of claim 14, characterized by The first limiting groove (P1) has a first connecting opening (P1a) and a second connecting opening (P1b), the first connecting rod (1311) is connected with the rotating connecting rod (132) through the first connecting opening (P1a), and the second connecting rod (1312) is connected with the rotating connecting rod (132) through the second connecting opening (P1a).

16. The housing assembly (100) according to claim 14 or 15, characterized in that Further comprising a first cover plate (104), which is located on the side of the rotating connecting rod (132) away from the second shell (102) in the thickness direction (Z) of the second shell (102) and shields at least part of the opening of the first limiting groove (P1) in the thickness direction (Z) of the second shell (102).

17. The housing assembly (100) according to any one of claims 12 to 16, characterized in that The rotating connecting rod (132) is rotationally connected to one end of the first connecting rod (1311) away from the first rotating shaft mechanism (110), comprising: The rotating connecting rod (132) is rotationally connected to one end of the first connecting rod (131) away from the first rotating shaft mechanism (110) through a first protrusion (1302) and a first connecting hole (1302), and the first protrusion (1302) is embedded in the first connecting hole (1302).

18. The housing assembly (100) of claim 17, characterized by In the length extension direction (Y) of the first rotating shaft mechanism (110), the aperture of the first connecting hole (1302) is greater than the length of the first protrusion (1302).

19. The housing assembly (100) according to any one of claims 12 to 18, characterized in that The rotating connecting rod (132) is rotationally connected to one end of the second connecting rod (1312), comprising: The rotating connecting rod (132) is rotationally connected to one end of the second connecting rod (1312) through a second protrusion (1303) and a first connecting hole (1304), and the second protrusion (1303) is embedded in the first connecting hole (1304).

20. The housing assembly (100) of claim 19, wherein, In the length extension direction (Y) of the first rotating shaft mechanism (110), the aperture of the second connecting hole (1304) is greater than the length of the second protrusion (1303).

21. The housing assembly (100) according to any one of claims 3 to 20, characterized in that The second shell (102) is provided with a second limiting groove (P2); In the process that the first shell (101) and the second shell (102) are switched from the first state to the unfolded state and in the process that the first shell (101) and the second shell (102) are switched from the unfolded state to the first state, the second connecting rod (1312) slides in the second limiting groove (P2).

22. The housing assembly (100) of claim 21, wherein, A second cover plate (105) is further included, which is located on a side of the second connecting rod (1312) away from the second shell (102) along the thickness direction (Z) of the second shell (102), and covers at least part of the opening of the second limiting groove (P2) along the thickness direction (Z) of the second shell (102).

23. The housing assembly (100) according to any one of claims 1 to 22, characterized in that The number of the limiting guide mechanisms (130) is multiple, and the multiple limiting guide mechanisms (130) are arranged at intervals along the length extension direction (Y) of the first rotating shaft mechanism (110).

24. The housing assembly (100) according to any one of claims 1 to 23, characterized in that When the third shell (103) and the second shell (102) are in the folded state, the second rotating shaft mechanism (120) limits the movement of the connecting rod (131) relative to the second rotating shaft mechanism (120) along the first sub-direction (X1); When the third shell (103) and the second shell (102) are in the unfolded state, the connecting rod (131) can move relative to the second rotating shaft mechanism (120) along the first sub-direction (X1).

25. The housing assembly (100) of claim 24, wherein, When the third shell (103) and the second shell (102) are in the second state, the connecting rod (131) can move relative to the second rotating shaft mechanism (120) along the first sub-direction (X1). When the third shell (103) and the second shell (102) are in the second state, the included angle between the third shell (103) and the second shell (102) is greater than 0° and less than 180°.

26. A foldable electronic device (200) characterized by Comprise: A flexible display screen (201) comprises a first area (201a), a second area (201b), and a third area (201c); The shell assembly (100) according to any one of claims 1-25, wherein the first shell (101) is arranged corresponding to the first area (201a), the second shell (102) is arranged corresponding to the second area (201b), and the third shell (103) is arranged corresponding to the third area (201c); at least one of the first shell (101), the second shell (102), and the third shell (103) is fixedly connected with the flexible display screen (201); When the first shell (101) and the second shell (102) are in the unfolded state, and the third shell (103) and the second shell (102) are in the unfolded state, the first area (201a), the second area (201b), and the third area (201c) are located in the same plane; When the first shell (101) and the second shell (102) are in a folded state, and the third shell (103) and the second shell (102) are in a folded state, the first area (201a) is located between the first shell (101) and the second area (201b), the second area (201b) is located between the first area (201a) and the second shell (102), and the third area (201c) is located between the first shell (101) and the third shell (103).

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