Shell for electronic equipment, shell assembly, folding device, electronic equipment, rotating shaft assembly and foldable equipment

Abstract

The utility model provides a shell for electronic equipment, a shell assembly, a folding device, the electronic equipment, a rotating shaft assembly and foldable equipment, the shell comprises a first shell and a second shell, and the bottom of the first shell is provided with a hollow part. The second shell is movably connected to the part, located around the hollow part, of the first shell, so that the second shell is switched between the retraction position and the extension position relative to the first shell. A cavity defined by the second shell and the first shell in the extending position is larger than a cavity defined by the second shell and the first shell in the retracting position. When the electronic equipment is in a use state, the second shell is located at the extending position, the volume of the cavity of the shell is increased, and the heat dissipation performance of the electronic equipment is enhanced; when the electronic equipment is in an idle state, the second shell is located at the retraction position, the cavity volume of the shell is reduced, and the electronic equipment is lighter, thinner and more attractive. According to the shell of the electronic equipment, the heat dissipation capacity of the electronic equipment is improved, and meanwhile the light and thin requirements and the appearance requirements of the electronic equipment are met.

Description

Technical Field

[0001] The present application relates to the field of housings for electronic devices, and in particular to a housing for electronic devices, a housing assembly, a folding device, an electronic device, a hinge assembly, and a foldable device. Background Art

[0002] In recent years, with the continuous development of hardware and terminal devices, users are pursuing the aesthetic appearance and thinness of electronic devices, while also paying more attention to the performance of electronic devices. How to balance the three contradictions of beauty, thinness and performance to meet users' growing pursuit of product beauty, thinness and high performance experience is a key challenge facing existing electronic devices.

[0003] The challenges faced by electronic devices are that achieving a thin and light design will compress the internal space of the electronic device, and the increased airflow resistance will affect the heat dissipation efficiency, which in turn affects the performance of the electronic device. Before the existing heat dissipation technology can be revolutionary upgraded, an effective solution to increase the performance of electronic devices is to increase the heat dissipation space, which in turn goes against the design trend of thin and light electronic devices. How to achieve both thinness and performance is an important issue that needs to be solved urgently for electronic devices.

[0004] At present, the industry mainly provides the following three technical solutions to solve the need to improve the performance of electronic devices as they become increasingly thin and light:

[0005] 1) By improving the performance of the heat dissipation module and optimizing the air duct, the heat dissipation capacity under the thin thickness constraint requirement is improved from the heat dissipation capacity end to achieve performance improvement. However, this solution is limited by the limited heat dissipation capacity of the heat dissipation module in a single area. For example, the wind force generated by the rated power fan installed in the rated space is certain and cannot take away more heat; and it cannot fundamentally solve the bottleneck problem of the heat dissipation pipeline in the heat conduction chain. For example, the size of some heat dissipation pipelines is constant and cannot accommodate more hot air flow.

[0006] 2) An air inlet and outlet duct that can be switched between an open state and a closed state is provided on the side of the host end of the electronic device that faces the user. When the electronic device is working, the air inlet and outlet duct on the host end is opened by the action of the mechanism to improve the heat dissipation capacity. Starting from the system solution, this solution adds a pipe interface to the heat dissipation space, increases the flow of air between the electronic device and the external environment, and thus improves the heat dissipation capacity. However, when the air inlet and outlet duct is in an open state, the air inlet and outlet duct on the host end is used to keep the closed duct housing in a raised state, and is located on the side facing the user when in use, which makes the electronic device lack integrity and simplicity in appearance.

[0007] 3) By controlling the lifting of the electronic device foot pads to increase the distance between the electronic device and the desktop, the electronic device is made thinner and lighter while the air inlet and outlet environment of the electronic device is improved, thereby improving the heat dissipation capacity of the electronic device. However, this solution cannot systematically increase the heat dissipation space of the heat source, has no effect on improving the internal heat dissipation environment of the electronic device, and the heat dissipation capacity is limited.

[0008] It can be seen that the heat dissipation method of electronic devices in the prior art is limited by space, and the improvement of heat dissipation capacity is limited, which cannot effectively enhance the performance of electronic devices; and while improving the heat dissipation capacity, it cannot take into account the requirements of electronic devices for lightness and thinness and appearance. Utility Model Content

[0009] The shell, shell assembly, folding device, electronic device, hinge assembly and foldable device for electronic devices provided in the embodiments of the present application solve the problems in the prior art that the heat dissipation method of electronic devices is limited by space, the heat dissipation capacity is limited, and the performance of the electronic device cannot be effectively enhanced; and while the heat dissipation capacity is improved, the requirements for the electronic device to be lightweight and the appearance requirements cannot be taken into account.

[0010] The embodiment of the present application provides a housing for an electronic device, comprising a first housing and a second housing. A hollow portion is provided at the bottom of the first housing. The second housing is movably connected to a portion of the first housing located around the hollow portion, so that the second housing can be switched between a retracted position and an extended position relative to the first housing, and the second housing and the first housing are surrounded together to form a cavity, and the cavity is used to accommodate an electronic unit of the electronic device.

[0011] When the second shell is in the retracted position, the second shell is located in the hollow portion; when the second shell is in the extended position, at least part of the second shell is located outside the hollow portion and protrudes from the bottom of the first shell in a first direction, and the first direction is parallel to the thickness direction of the shell. In addition, the cavity enclosed by the second shell and the first shell in the extended position is larger than the cavity enclosed by the second shell and the first shell in the retracted position.

[0012] In the present application, the second shell can be switched between a retracted position and an extended position relative to the first shell, and the volume of the cavity enclosed by the second shell and the first shell in the extended position is larger than the volume of the cavity enclosed by the second shell and the first shell in the retracted position. The shell is applied to an electronic device, and when the electronic device is in use, the second shell is in the extended position. At this time, the volume of the cavity enclosed by the second shell and the first shell is larger, which can effectively increase the heat dissipation space of the electronic device and improve the performance of the electronic device. The second shell is located at the bottom of the shell, that is, on the side of the shell away from the user, and can be well hidden, reducing its impact on the overall appearance of the electronic device. When the electronic device is in an idle state (i.e., not in use), the second shell is in the retracted position, and the second shell is located in the hollow portion at the bottom of the first shell, or it can be understood that the second shell is hidden in the first shell, and will not occupy the thickness space of the electronic device, making the electronic device thinner and more beautiful.

[0013] Therefore, the shell for electronic devices provided in the embodiment of the present application has a larger cavity volume of the shell when the electronic device is in use, which effectively enhances the heat dissipation performance of the electronic device; when the electronic device is in an idle state, the second shell is located in the hollow portion, the cavity volume of the shell becomes smaller, and the electronic device becomes thinner and more beautiful. This solves the problem that the heat dissipation method of electronic devices in the prior art is limited by space, the heat dissipation capacity is limited, and the performance of the electronic device cannot be effectively enhanced; and the requirements for thinness and appearance of the electronic device cannot be taken into account while improving the heat dissipation capacity.

[0014] In some embodiments, the first side edge portion of the second shell is rotatably connected to the first side edge portion of the first shell located around the hollow portion via a first pivot assembly, so that the second shell can rotate around the first axis relative to the first shell between a retracted position and an extended position; wherein the first axis extends along a second direction, and the second direction is perpendicular to the first direction.

[0015] Furthermore, when the second shell is located at the extended position, a gap exists between the side edge portions of the second shell except the first side edge portion and the portion of the first shell located around the hollow portion in the first direction.

[0016] With the above solution, the first side edge of the second housing is rotatably connected to the first side edge of the first housing through the first rotating shaft assembly. The volume of the cavity enclosed by the first housing and the second housing is changed by the rotatable connection, thereby improving the heat dissipation performance of the electronic device and taking into account the characteristics of the electronic device being light, thin and beautiful.

[0017] In some embodiments, when the second housing is in the retracted position, the outer edge area of ​​the surface of the second housing facing away from the cavity is flush with the bottom surface of the portion of the first housing located around the hollow portion. With such a design, the bottom surface of the second housing is flush with the bottom surface of the portion of the first housing around the hollow portion, making the electronic device more integrated and more beautiful.

[0018] In some embodiments, other side edge portions of the second shell except the first side edge portion are provided with a retaining wall structure extending along the first direction toward the inside of the cavity.

[0019] Among them, when the second shell is in the retracted position, the retaining wall structure is located on the side of the hollow portion facing the top of the first shell; when the second shell is in the extended position, the retaining wall structure is located in the gap, and the part of the retaining wall structure away from the second shell is located around the hollow portion, and the retaining wall structure, the second shell and the first shell together form a cavity.

[0020] By adopting the above solution, the side edge portions of the second housing other than the first side edge portion are provided with a retaining wall structure, which effectively reduces the possibility of pollutants entering the interior of the electronic device and prolongs the service life of the electronic device. In addition, when the second housing is located at a different position relative to the first housing, the second housing and the first housing are both integral structures, making the electronic device more integrated and more beautiful.

[0021] In some embodiments, the side wall of the retaining wall structure is provided with a plurality of through holes. When the second shell is in the extended position, the cavity is connected to the outside of the shell through the plurality of through holes, and the portion of the retaining wall structure away from the second shell is connected to the portion of the first shell located around the hollow portion.

[0022] With such a design, through holes are provided on the side walls of the retaining wall structure. When the second shell is in the extended position, the through holes of the retaining wall structure are used for airflow in and out, which can effectively improve the heat dissipation performance of the electronic equipment.

[0023] In some embodiments, the first rotating shaft assembly includes a first fixed bracket, a second fixed bracket and a first connecting shaft, the first fixed bracket is fixed to the first side edge portion of the first shell located around the hollow portion, the second fixed bracket is fixed to the first side edge portion of the second shell, and the first fixed bracket is rotatably connected to the second fixed bracket through the first connecting shaft, so that the second fixed bracket can rotate around the first axis relative to the first fixed bracket, so that the second shell can rotate around the first axis relative to the first shell.

[0024] With this design, the first shell fixedly connected to the first fixing bracket and the second shell fixedly connected to the second fixing bracket are rotationally connected via the first connecting shaft in the first rotating shaft assembly, and the relative rotation between the first shell and the second shell is simple.

[0025] In some embodiments, each of the first fixing bracket and the second fixing bracket includes a mounting plate and a sleeve connected to one side of the mounting plate, the mounting plate of the first fixing bracket is fixedly and detachably connected to the first shell, and the mounting plate of the second fixing bracket is fixedly and detachably connected to the second shell. The first connecting shaft includes an anti-rotation shaft segment and a rotating shaft segment that are sequentially connected and relatively fixed along its axial direction.

[0026] The anti-rotation shaft section is sleeved in the sleeve of the first fixed bracket and fixed relative to the sleeve of the first fixed bracket along its circumferential direction, and the rotation shaft section is sleeved in the sleeve of the second fixed bracket and can be rotatably connected around the first axis, so that the first fixed bracket is rotatably connected to the second fixed bracket through the first connecting shaft. Or,

[0027] The rotating shaft section is sleeved in the sleeve of the first fixed bracket and can be rotatably connected around the first axis. The anti-rotation shaft section is sleeved in the sleeve of the second fixed bracket and is fixed relative to the sleeve of the second fixed bracket along its circumferential direction, so that the first fixed bracket is rotatably connected to the second fixed bracket through the first connecting shaft.

[0028] With such a design, one of the first fixed bracket and the second fixed bracket is circumferentially fixed to the first connecting shaft, and the other is rotationally connected to the first connecting shaft, so that the first shell fixedly connected to the first fixed bracket and the second shell fixedly connected to the second fixed bracket are rotationally connected through the first rotating shaft assembly. The first rotating assembly for realizing relative rotation of the first shell and the second shell is simple in structure and easy to assemble.

[0029] In some embodiments, the first side edge portion of the second shell is rotatably connected to the first side edge portion of the first shell located around the hollow portion through two first rotating shaft assemblies, and the two first rotating shaft assemblies are spaced apart in the second direction.

[0030] By adopting the above solution, the first shell and the second shell are rotationally connected through two first rotating shaft assemblies spaced apart in the second direction, and the rotation process is smoother.

[0031] In some embodiments, the first shell includes a first partial shell and a second partial shell. The first partial shell is configured as a groove-shaped structure and includes a top plate and an outer periphery connected to the top plate and a side wall protruding from the top plate in a first direction. The second partial shell is configured as an annular frame structure. The inner periphery of the second partial shell is surrounded to form a hollow portion, and the outer periphery of the second partial shell is fixedly connected to an end of the side wall of the first partial shell away from the top plate.

[0032] Through such a design, the first shell is a groove-shaped structure composed of a first shell portion including a top plate and a side wall and a second shell portion of an annular frame structure. The first shell adopts a split structure design, which is decomposed into various sub-components with simpler structures, effectively reducing production costs and facilitating assembly.

[0033] In some embodiments, the electronic device is a laptop computer, which includes a system end part, the shell is used as a shell of the system end part, the top of the first shell is used to install the keyboard of the system end part, and the bottom surface of the second shell facing away from the cavity is provided with a foot pad.

[0034] The embodiment of the present application also provides a housing assembly, including a second shaft assembly and a housing provided by any of the above embodiments, wherein the second shaft assembly is disposed on a first housing of the housing and is used to connect to a third housing of the electronic device, so that the first housing of the housing can rotate relative to the third housing around a second axis through the second shaft assembly. The method for the two housings of the electronic device to rotate relative to each other is simple.

[0035] In some embodiments, when the first side edge portion of the second shell is rotatably connected to the first side edge portion of the first shell located around the hollow portion through the first shaft assembly, so that the second shell can rotate around the first axis relative to the first shell between a retracted position and an extended position, the second shaft assembly includes a shaft structure and a transmission structure.

[0036] The rotating shaft structure includes a rotating bearing frame and a second connecting shaft, wherein the rotating bearing frame is fixedly connected to a side of the first housing away from the first rotating shaft assembly; the second connecting shaft is rotatably connected to the rotating bearing frame around a second axis, so that the second connecting shaft can switch between a first position and a second position relative to the rotating bearing frame, and the second connecting shaft is used to be fixedly connected to the third housing, so that the first housing can rotate relative to the third housing around the second axis through the rotating shaft structure. The second axis is parallel to the first axis.

[0037] The transmission structure is connected between the second connecting shaft and a side of the second shell away from the first side edge portion. In response to the rotation of the second connecting shaft relative to the rotating bearing frame, the transmission structure can drive the second shell to rotate around the first axis relative to the first shell between a retracted position and an extended position.

[0038] Among them, when the second connecting shaft is in the first position relative to the rotating bearing frame, the third shell is in a closed state relative to the first shell, and the second shell is in a retracted position relative to the first shell; when the second connecting shaft is in the second position relative to the rotating bearing frame, the third shell is in an expanded state relative to the first shell, and the second shell is in an extended position relative to the first shell.

[0039] When the second connecting shaft switches from the first position to the second position, the transmission structure, driven by the second connecting shaft, links the second housing to rotate from the retracted position to the extended position relative to the first housing.

[0040] When the second connecting shaft switches from the second position to the first position, the transmission structure, driven by the second connecting shaft, links the second housing to rotate from the extended position to the retracted position relative to the first housing.

[0041] With the above solution, when the first shell and the third shell rotate relative to each other through the rotating shaft structure, the transmission structure transmits power to the second shell driven by the second connecting shaft, thereby linking the second shell to rotate with the first shell through the first connecting shaft. There is no need to set up an additional driving device to drive the first shell and the second shell to rotate relative to each other, which reduces the size of the electronic device and reduces the production cost. In addition, when the shell of the electronic device and the third shell move away from or close to each other, the volume of the cavity enclosed by the first shell and the second shell expands or contracts accordingly, and the user has a better interactive experience when using the electronic device.

[0042] In some embodiments, the transmission structure includes a connecting rod and a third fixed bracket.

[0043] The connecting rod is rotatably connected to the rotating bearing frame through the third connecting shaft, so that the connecting rod can rotate around the third axis relative to the rotating bearing frame, and one end of the connecting rod cooperates with the second connecting shaft to drive the connecting rod to rotate relative to the rotating bearing frame through the rotation of the second connecting shaft; wherein the third axis is parallel to the second axis.

[0044] The other end of the connecting rod is rotatably and slidably connected to the third fixing bracket through the fourth connecting shaft, and the third fixing bracket is fixedly connected to a side of the second shell away from the first side edge portion.

[0045] In response to the rotation of the second connecting shaft relative to the rotating bearing frame, the transmission structure can drive the second housing to rotate around the first axis relative to the first housing between the retracted position and the extended position.

[0046] With the above solution, when the second connecting shaft rotates, it drives the connecting rod matched with it to rotate relative to the rotating bearing frame through the third connecting shaft, so that the other end of the connecting rod rotates and slides with the third fixed bracket through the fourth connecting shaft, thereby making the second housing fixedly connected to the third fixed bracket rotate relative to the first housing around the first axis. The transmission method for transmitting the power of the second connecting shaft to the second housing is simple, and the components of the transmission structure are simple in structure, which is convenient for processing and assembly.

[0047] In some embodiments, a sleeve is provided on one side of the swivel bearing frame away from the first side edge of the second shell, a notch is provided on the wall of the sleeve, one end of the second connecting shaft is sleeved in the sleeve and can be rotatably connected to the swivel bearing frame around the second axis. An extension platform is provided on one side of the swivel bearing frame close to the connecting rod, and a groove is provided on the bottom surface of the extension platform extending toward the top surface of the extension platform.

[0048] The connecting rod is penetrated through the groove of the extension platform along its length direction, and a first axial hole is opened in the middle of the connecting rod along its length direction. The third connecting shaft is penetrated through the two side walls of the groove and the first axial hole of the connecting rod along its axial direction, so that the connecting rod is rotatably connected to the rotating bearing frame through the third connecting shaft and the extension platform.

[0049] According to the above scheme, one end of the second connecting shaft is sleeved in a sleeve with a notch on the rotating bearing frame, and is rotatably connected to the rotating bearing frame. The connecting rod is matched with the shaft hole of the third connecting shaft and penetrates the groove of the rotating bearing frame, and is rotatably connected to the rotating bearing frame through the third connecting shaft. The structure in which the rotating bearing frame rotates relative to the second connecting shaft and the connecting rod is simple.

[0050] In some embodiments, the outer wall surface of the middle part of the second connecting shaft is provided with a recess which is recessed in the radial direction of the second connecting shaft toward the second axis, and the first cam portion and the second cam portion are respectively formed on both sides of the recess in the circumferential direction of the second connecting shaft; one end of the connecting rod is provided with a cam structure.

[0051] When the second connecting shaft is located at the first position, the cam structure of the connecting rod abuts against the first cam portion of the second connecting shaft.

[0052] When the second connecting shaft is located at the second position, the portion of the cam structure of the connecting rod away from the third connecting shaft abuts against the first cam portion, and the portion of the cam structure of the connecting rod close to the third connecting shaft abuts against the second cam portion.

[0053] When the second connecting shaft switches from the first position to the second position, the cam structure of the connecting rod gradually disengages from the first cam portion of the second connecting shaft as the second connecting shaft rotates, and rotates in the recess along the circumference of the second connecting shaft to a position abutting against the second cam portion, until it moves to a position abutting against the first cam portion and the second cam portion at the same time under the pushing action of the second cam portion.

[0054] By adopting the above solution, the cam structure at one end of the connecting rod cooperates with the first cam portion and the second cam portion on both sides of the second connecting shaft recess, so that the second connecting shaft can transmit power to the connecting rod of the transmission structure when rotating. The structure of power transmission between the second connecting shaft and the connecting rod is simple and compact.

[0055] In some embodiments, the first cam portion has a first outer guide surface and a first inner guide surface connected in sequence along the circumference of the second connecting shaft, and the second cam portion has a second inner guide surface. The first inner guide surface and the second inner guide surface are located in the recess, and the first outer guide surface is located outside the recess.

[0056] The cam structure of the connecting rod comprises a first guided surface, a second guided surface and a third guided surface which are connected in sequence. The second guided surface is located at the tip of the cam structure and is located on the end surface of one end of the connecting rod.

[0057] When the second connecting shaft is located at the first position, the first guided surface of the cam structure abuts against the first outer guiding surface of the first cam portion.

[0058] When the second connecting shaft is located at the second position, the second guided surface of the cam structure abuts against the first inner guiding surface of the first cam portion, and the third guided surface of the cam structure abuts against the second inner guiding surface of the second cam portion.

[0059] In some embodiments, a second axial hole is formed at the other end of the connecting rod, and a protrusion is formed at a side of the third fixing bracket away from the second shell, and a strip-shaped hole is formed at the protrusion.

[0060] The fourth connecting shaft passes through the second shaft hole of the connecting rod and the strip hole of the third fixing bracket, and is slidably connected to the strip hole along the extension direction of the strip hole, so that the other end of the connecting rod rotates through the fourth connecting shaft and is slidably connected to the third fixing bracket.

[0061] When the second shell is in the retracted position, the fourth connecting shaft is located on a side of the strip hole close to the third fixing bracket; when the second shell is in the extended position, the fourth connecting shaft is located on a side of the strip hole away from the third fixing bracket.

[0062] With the above solution, the fourth connecting shaft is inserted into the second shaft hole of the connecting rod and the strip hole of the third fixed bracket, so that the connecting rod is rotatably and slidably connected with the third fixed bracket through the fourth connecting shaft. When the connecting rod rotates with the third fixed bracket, the displacement difference in the length direction of the connecting rod generated when the second housing fixedly connected to the third fixed bracket rotates around the first axis is compensated. In addition, the rotation and sliding connection are achieved by matching the shaft with the strip hole, and the structure is simple and compact.

[0063] In some embodiments, an extension portion is provided on one side of the third housing close to the housing, and a mounting hole is provided on the extension portion, and the other end of the second connecting shaft is sleeved in the mounting hole of the extension portion of the third housing and fixed relative to the mounting hole of the third housing along its circumferential direction. The fixing method of the third housing and the second connecting shaft is simple and compact.

[0064] In some embodiments, the first shell of the shell is rotatably connected to the third shell via two second rotating shaft assemblies, and the two second rotating shaft assemblies are located at two ends of the first shell along the direction where the second axis is located.

[0065] By adopting the above solution, the third housing is rotationally connected via two second rotating shaft assemblies arranged at both ends of the first housing, and the rotation process is smoother.

[0066] In some embodiments, when the first shell includes a first partial shell and a second partial shell, the second partial shell of the first shell is rotatably connected to the third shell via a second rotating shaft assembly.

[0067] When the electronic device is a notebook computer, the notebook computer includes a system end part, the notebook computer also includes a display end part, and the third shell is a shell of the display end part.

[0068] The embodiment of the present application also provides a folding device, including a third shell and the shell assembly provided by any of the above embodiments. The folding device in the present application adopts the shell assembly provided by any of the above embodiments, and when the folding device rotates, the second shell is linked to rotate relative to the first shell around the first axis, so as to achieve synchronous adjustment of the volume of the shell cavity, enhance the heat dissipation performance of the electronic device, and improve the interactive experience of the user when using the electronic device.

[0069] The embodiment of the present application also provides an electronic device, including the folding device provided by any of the above embodiments. The electronic device in the present application adopts the folding device provided by any of the above embodiments, which solves the problem that the heat dissipation method of the electronic device in the prior art is limited by space, the heat dissipation capacity is limited, and the performance of the electronic device cannot be effectively enhanced; and while the heat dissipation capacity is improved, the requirements for the lightness and thinness of the electronic device and the requirements for the appearance cannot be taken into account.

[0070] The embodiment of the present application also provides a rotating shaft assembly, including a rotating shaft structure and a transmission structure. The rotating shaft structure includes a main connecting shaft and a rotating bearing frame, the main connecting shaft is used to be fixedly connected to one side of the first component, the rotating bearing frame is used to be fixedly connected to the side of the second component close to the first component, the main connecting shaft is rotatably connected to the rotating bearing frame around a main axis, so that the main connecting shaft can switch between a first position and a second position relative to the rotating bearing frame, and the first component can rotate relative to the second component around the main axis through the rotating shaft structure.

[0071] One end of the transmission structure is connected to the main connecting shaft, and the other end is used to connect to the third component. In response to the rotation of the main connecting shaft relative to the rotating bearing frame, the transmission structure can drive the third component to rotate between the first rotation position and the second rotation position relative to the second component.

[0072] With the above solution, when the second component and the first component rotate relative to each other through the rotating shaft structure, the transmission structure transmits power to the third component under the drive of the main connecting shaft, thereby linking the third component to rotate with the second component through the first connecting shaft. There is no need to set up an additional driving device to drive the second component and the third component to rotate relative to each other, which reduces the size of the device, reduces the production cost, and improves the interactive experience of the user when using the device.

[0073] In some embodiments, the transmission structure includes a connecting rod and a fixed bracket. The connecting rod is rotatably connected to the rotating bearing frame through a first secondary connecting shaft, so that the connecting rod can rotate relative to the rotating bearing frame around a first secondary axis, and one end of the connecting rod cooperates with the main connecting shaft to drive the connecting rod to rotate relative to the rotating bearing frame through the rotation of the main connecting shaft. Wherein, the first secondary axis is parallel to the main axis.

[0074] The other end of the connecting rod is rotatably and slidably connected to the fixed bracket through the second auxiliary connecting shaft, and the fixed bracket is fixedly connected to one side of the third component close to the main connecting shaft.

[0075] With the above solution, when the main connecting shaft rotates, it drives the connecting rod matched with it to rotate relative to the rotating bearing frame through the first secondary connecting shaft, so that the other end of the connecting rod rotates and slides with the fixed bracket through the second secondary connecting shaft, thereby causing the third component fixedly connected to the fixed bracket to rotate relative to the second component. The transmission method for transmitting the power of the main connecting shaft to the third component is simple, and the components of the transmission structure are simple in structure, which is easy to process and assemble.

[0076] In some embodiments, a sleeve is provided on one side of the swivel bearing frame close to the first component, a notch is provided on the wall of the sleeve, and one end of the main connecting shaft is sleeved in the sleeve and rotatably connected to the swivel bearing frame around the main axis.

[0077] An extension platform is provided on one side of the swivel bearing frame close to the connecting rod, and a groove extending toward the top surface of the extension platform is provided on the bottom surface of the extension platform. The connecting rod is inserted into the groove of the extension platform along its length direction, and a first shaft hole is provided in the middle of the connecting rod along its length direction. The first auxiliary connecting shaft is inserted into two side walls of the groove and the first shaft hole of the connecting rod along its axial direction, so that the connecting rod is rotatably connected to the swivel bearing frame through the first auxiliary connecting shaft and the extension platform.

[0078] With the above solution, one end of the main connecting shaft is sleeved in a sleeve with a notch on the rotating bearing frame, and is rotatably connected to the rotating bearing frame. The connecting rod is matched with the first secondary connecting shaft through the shaft hole and penetrates the groove of the rotating bearing frame, and is rotatably connected to the rotating bearing frame through the first secondary connecting shaft. The structure in which the rotating bearing frame rotates relative to the main connecting shaft and the connecting rod is simple.

[0079] In some embodiments, the outer wall surface of the middle part of the main connecting shaft is provided with a recess which is recessed in the radial direction of the main connecting shaft toward the main axis line, and the first cam portion and the second cam portion are respectively formed on both sides of the recess in the circumferential direction of the main connecting shaft; one end of the connecting rod is provided with a cam structure.

[0080] When the main connecting shaft is in the first position, the cam structure of the connecting rod abuts against the first cam portion of the main connecting shaft. When the main connecting shaft is in the second position, the part of the cam structure of the connecting rod away from the first secondary connecting shaft abuts against the first cam portion, and the part of the cam structure of the connecting rod close to the first secondary connecting shaft abuts against the second cam portion.

[0081] When the main connecting shaft switches from the first position to the second position, the cam structure of the connecting rod gradually disengages from the first cam portion of the main connecting shaft as the main connecting shaft rotates, and rotates in the recess along the circumference of the main connecting shaft to a position abutting against the second cam portion, until it moves to a position abutting against the first cam portion and the second cam portion at the same time under the push of the second cam portion.

[0082] By adopting the above solution, the cam structure at one end of the connecting rod cooperates with the first cam portion and the second cam portion at both ends of the main connecting shaft recess, so that the power is transmitted to the connecting rod of the transmission structure when the main connecting shaft rotates. The structure of the main connecting shaft and the connecting rod for power transmission is simple and compact.

[0083] In some embodiments, the first cam portion has a first outer guide surface and a first inner guide surface connected in sequence along the circumferential direction of the main connecting shaft, the second cam portion has a second inner guide surface, the first inner guide surface and the second inner guide surface are located in the recess, and the first outer guide surface is located outside the recess. The cam structure of the connecting rod has a first guided surface, a second guided surface, and a third guided surface connected in sequence, the second guided surface is located at the tip of the cam structure and is located on the end surface of one end of the connecting rod.

[0084] When the main connecting shaft is in the first position, the first guided surface of the cam structure abuts against the first outer guiding surface of the first cam portion. When the main connecting shaft is in the second position, the second guided surface of the cam structure abuts against the first inner guiding surface of the first cam portion, and the third guided surface of the cam structure abuts against the second inner guiding surface of the second cam portion.

[0085] In some embodiments, a second axial hole is formed at the other end of the connecting rod, a protrusion is formed on one side of the fixing bracket close to the main connecting shaft, and a strip hole is formed on the protrusion. The second secondary connecting shaft is passed through the second axial hole of the connecting rod and the strip hole of the fixing bracket, and is slidably connected to the strip hole along the extension direction of the strip hole, so that the other end of the connecting rod is rotated through the second secondary connecting shaft and is slidably connected to the fixing bracket.

[0086] When the third component is in the first rotation position, the second secondary connecting shaft is located on the side of the strip hole close to the fixed bracket; when the third component is in the second rotation position, the second secondary connecting shaft is located on the side of the strip hole away from the fixed bracket.

[0087] With the above solution, the second secondary connecting shaft is inserted into the second shaft hole of the connecting rod and the strip hole of the fixed bracket, so that the connecting rod is connected to the fixed bracket by rotation and sliding through the second secondary connecting shaft. When the connecting rod rotates with the fixed bracket, the displacement difference in the length direction of the connecting rod generated when the third component fixedly connected to the fixed bracket rotates relative to the second component is compensated. In addition, the rotation and sliding connection is achieved by matching the shaft with the strip hole, and the structure is simple and compact.

[0088] The embodiment of the present application also provides a foldable device, including the first component, the second component and the third component provided by any of the above embodiments. The foldable device in the present application adopts the shaft assembly provided by any of the above embodiments, and the foldable device does not need to be additionally provided with a driving device for driving the second component and the third component to rotate relative to each other, thereby reducing the volume of the foldable device, reducing the production cost, and improving the user's interactive experience when using the foldable device. BRIEF DESCRIPTION OF THE DRAWINGS

[0089] Figure 1a This is a schematic diagram of the structural principle of an implementation of a housing for an electronic device in a closed state according to an embodiment of the present application;

[0090] Figure 1b This is a schematic diagram of the structural principle of an implementation of a housing for an electronic device in an unfolded state according to an embodiment of the present application;

[0091] Figure 1c This is a schematic diagram of the structural principle of another implementation of the housing of an electronic device in a closed state according to an embodiment of the present application;

[0092] Figure 1d This is a schematic diagram of the structural principle of another implementation of the housing of an electronic device in an unfolded state according to an embodiment of the present application;

[0093] Figure 1e This is a schematic diagram of the structural principle of another implementation of the housing of an electronic device in a closed state according to an embodiment of the present application;

[0094] Figure 1f This is a schematic diagram of the structural principle of another implementation of the housing of an electronic device in an unfolded state according to an embodiment of the present application;

[0095] Figure 1g This is a schematic diagram of the structural principle of another implementation of the housing of an electronic device in a closed state according to an embodiment of the present application;

[0096] Figure 1h This is a schematic diagram of the structural principle of another implementation of the housing of an electronic device in an unfolded state according to an embodiment of the present application;

[0097] Figure 2a This is a schematic diagram of an application scenario in which the housing of an electronic device is in a closed state according to an embodiment of the present application;

[0098] Figure 2b A schematic diagram of an application scenario of a housing of an electronic device in an unfolded state according to an embodiment of the present application;

[0099] Figure 3 This is a schematic diagram of the structure of the electronic device in the unfolded state according to the embodiment of the present application;

[0100] Figure 4 This is a schematic diagram of the structure of the electronic device in a closed state according to an embodiment of the present application;

[0101] Figure 5 This is a schematic diagram of the exploded structure of the electronic device in a closed state according to an embodiment of the present application;

[0102] Figure 6 This is a schematic diagram of the structure of the electronic device according to the embodiment of the present application when it is in an unfolded state from a rear perspective;

[0103] Figure 7 This is a schematic diagram of the structure of the electronic device according to the embodiment of the present application when it is in a closed state from the back side;

[0104] Figure 8 This is a schematic diagram of the structure of the electronic device according to the embodiment of the present application in the unfolded state from a front side perspective;

[0105] Fig. 9 This is a schematic diagram of the structure of the electronic device according to the embodiment of the present application when it is in a closed state from a front side perspective;

[0106] Fig.10 for Figure 3 Schematic cross-sectional view along the AA direction;

[0107] Fig.11 for Figure 4 Schematic cross-sectional view in the middle BB direction;

[0108] Fig.12 It is a cross-sectional schematic diagram of the system end portion of the electronic device in the embodiment of the present application in a closed state;

[0109] Fig.13 It is a cross-sectional schematic diagram of the system end portion of the electronic device according to the embodiment of the present application in an unfolded state;

[0110] Fig.14This is a schematic structural diagram of a first portion of a housing in a system end portion of an electronic device according to an embodiment of the present application;

[0111] Fig.15 This is a schematic structural diagram of a second part of a housing in a system end portion of an electronic device according to an embodiment of the present application;

[0112] Fig.16 It is a schematic diagram of the structure of the system end part of the electronic device in the embodiment of the present application in the front view when it is in the unfolded state, wherein the first part of the housing of the electronic device is removed;

[0113] Fig.17 This is a schematic structural diagram of the system end portion of the electronic device according to an embodiment of the present application from the perspective of the back side of the housing;

[0114] Fig.18 It is a schematic diagram of the structure of the housing in the system end part of the electronic device in the embodiment of the present application when it is in the unfolded state, wherein the first part of the housing is removed;

[0115] Fig.19 It is a schematic diagram of the three-dimensional structure of the second shell of the shell in the system end part of the electronic device according to the embodiment of the present application;

[0116] Fig. 20 This is a schematic diagram of the structure of a first rotating shaft assembly of a housing in a system end portion of an electronic device according to an embodiment of the present application;

[0117] Fig.21a It is a schematic diagram of the exploded structure of the first rotating shaft assembly of the housing in the system end part of the electronic device according to the embodiment of the present application;

[0118] Figure 21b for Fig.16 A schematic diagram of the local enlarged structure of part C in the middle;

[0119] Fig.22a It is a partial structural schematic diagram of the part where the second rotating shaft assembly is located in the electronic device of the embodiment of the present application in the unfolded state, wherein the first part of the housing is removed;

[0120] Figure 22b It is a schematic diagram of the partial structure of the other side of the part where the second rotating shaft assembly is located in the electronic device of the embodiment of the present application in the unfolded state, wherein the first part of the housing is removed;

[0121] Fig.23 This is a schematic structural diagram of a second rotating shaft assembly of an electronic device according to an embodiment of the present application;

[0122] Fig.24 This is a schematic diagram of the exploded structure of the second rotating shaft assembly of the electronic device according to an embodiment of the present application;

[0123] Fig.25aThis is a schematic structural diagram of a rotating bearing frame in a second rotating shaft assembly of an electronic device according to an embodiment of the present application;

[0124] Fig.25b This is a schematic structural diagram of a second connecting shaft in a second rotating shaft assembly of an electronic device according to an embodiment of the present application;

[0125] Fig.26a This is a schematic diagram of the structure of the third housing in the system end portion of the electronic device according to an embodiment of the present application;

[0126] Figure 26b for Fig.26a A schematic diagram of the local enlarged structure of part D in the middle;

[0127] Fig. 27 This is a schematic diagram of the structure of a connecting rod in a second rotating shaft assembly of an electronic device according to an embodiment of the present application;

[0128] Fig.28 This is a schematic structural diagram of a third fixing bracket in a second rotating shaft assembly of an electronic device according to an embodiment of the present application;

[0129] Fig.29 Schematic diagram of the relative position relationship between the third fixing bracket and the fourth connecting shaft of the electronic device of the embodiment of the present application, when the second connecting shaft is in the first position and the second position respectively;

[0130] Fig.30 A schematic diagram of the relative position relationship between the second connecting shaft and the connecting rod during the rotation of the second connecting shaft of the electronic device according to an embodiment of the present application from the first position to the second position, including when the second connecting shaft is in the first position, the second position, and the intermediate state between the first position and the second position;

[0131] Fig.31 A schematic diagram of the relative position relationship between the second connecting shaft and the connecting rod during the rotation of the second connecting shaft of the electronic device according to an embodiment of the present application from the second position to the first position, including when the second connecting shaft is in the first position, the second position, and the intermediate state between the first position and the second position;

[0132] Fig.32a This is a schematic diagram of the structure of the foldable device in the unfolded state according to an embodiment of the present application;

[0133] Figure 32b This is a schematic diagram of the structure of the foldable device in a closed state according to an embodiment of the present application.

[0134] Description of reference numerals:

[0135] This application:

[0136] 100, electronic device; 101, display end part; 102, system end part; 103, display end housing; 104, system end housing; 105, foot pad; 106, keyboard; 107, display; 108, touch pad;

[0137] 1. folding device; 10. third housing; 12. extension portion; 13. mounting hole;

[0138] 2. Shell assembly;

[0139] 3. Shell; 30. First shell; 300. First side edge; 31. Hollow portion; 32. Cavity; 33. First part shell; 34. Second part shell; 35. Second shell; 350. First side edge; 36. Retaining wall structure; 37. Through hole; S. Gap;

[0140] 4. First rotating shaft assembly; 41. First fixed bracket; 42. Mounting plate; 43. Sleeve; 44. Second fixed bracket; 45. Mounting plate; 46. Sleeve; 47. First connecting shaft; O1. First axis line; 48. Anti-rotation shaft section; 49. Rotating shaft section;

[0141] 5. Second rotating shaft assembly; 51. Rotating shaft structure; 52. Third fixing bracket; 53. Protruding portion; 54. Third connecting shaft; O3. Third axis line; 55. Fourth connecting shaft; 56. Transmission structure;

[0142] 6. second connecting shaft; O2. second axis; 61. first cam portion; 62. first outer guide surface; 63. first inner guide surface; 64. second cam portion; 65. second inner guide surface; 66. notch;

[0143] 7. swivel bearing frame; 71. sleeve; 72. notch; 73. extension platform; 74. groove;

[0144] 8. connecting rod; 81. first shaft hole; 82. second shaft hole; 83. cam structure; 84. first guided surface; 85. second guided surface; 86. third guided surface;

[0145] Q1, first direction; Q2, second direction;

[0146] 100', foldable equipment;

[0147] 10', first component; 30', second component; 35', third component;

[0148] 4', additional shaft assembly;

[0149] 5', shaft assembly. DETAILED DESCRIPTION

[0150] The following specific embodiments illustrate the implementation of the present application, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Although the description of the present application will be introduced in conjunction with some embodiments, this does not mean that the features of this application are limited to the implementation. On the contrary, the purpose of introducing the application in conjunction with the implementation is to cover other options or modifications that may be extended based on the claims of the present application. In order to provide a deep understanding of the present application, the following description will include many specific details. The present application can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present application, some specific details will be omitted in the description. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0151] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0152] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "top", "bottom", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0153] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0154] In the description of the present application, it should be understood that "electrical connection" in the present application can be understood as physical contact and electrical conduction between components; it can also be understood as a form in which different components in a circuit structure are connected through physical lines such as printed circuit board (PCB) copper foil or wires that can transmit electrical signals.

[0155] In the description of the present application, it should be noted that the mutual perpendicularity in the present application is not absolute perpendicularity, and the approximate perpendicularity caused by processing errors and assembly errors (for example, the angle between the two structural features is 89.9°) is also within the scope of mutual perpendicularity in the present application. The mutual parallelism in the present application is also not absolute parallelism, and the approximate parallelism caused by processing errors and assembly errors (for example, the angle between the two structural features is 0.1°) is also within the scope of mutual parallelism in the present application. The axisymmetry in the present application is not absolute axisymmetry, and the approximate axisymmetry caused by processing errors and assembly errors (for example, part of the structure is offset by a certain distance or angle relative to the axis of symmetry) is also within the scope of axisymmetry in the present application. The central symmetry in the present application is not absolute central symmetry, and the approximate central symmetry caused by processing errors and assembly errors (for example, part of the structure is offset by a certain distance or angle relative to the axis of symmetry) is also within the scope of central symmetry in the present application. This application does not make specific restrictions on this.

[0156] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0157] With the continuous development of hardware and terminal devices, users are pursuing the aesthetic appearance and thinness of electronic devices, while also paying more attention to the performance of electronic devices. How to balance the three contradictions of beauty, thinness and performance to meet users' growing pursuit of product beauty, thinness and high performance experience is a key challenge facing existing electronic devices.

[0158] The challenges faced by electronic devices are that achieving a thin and light design will compress the internal space of the electronic device, and the increased airflow resistance will affect the heat dissipation efficiency, which in turn affects the performance of the electronic device. Before the existing heat dissipation technology can be revolutionary upgraded, an effective solution to increase the performance of electronic devices is to increase the heat dissipation space, which in turn goes against the design trend of thin and light electronic devices. How to achieve both thinness and performance is an important issue that needs to be solved urgently for electronic devices.

[0159] There are three main technical solutions in the prior art to solve the need to improve the performance of electronic devices under the trend of becoming increasingly thin and light. The first category is to improve the heat dissipation capacity under the thin thickness constraint requirements from the heat dissipation capacity end and achieve performance improvement by improving the performance of the heat dissipation module and optimizing the air duct. However, this solution is limited by the limited heat dissipation capacity of the heat dissipation module in a single field. For example, the wind force generated by the rated power fan installed in the rated space is certain and cannot take away more heat; and it cannot fundamentally solve the bottleneck problem of the heat dissipation pipeline in the heat conduction chain. For example, the size of some heat dissipation pipelines is constant and cannot accommodate more hot air flow. The second category is to open an air inlet and outlet channel that can be switched between an open state and a closed state on the side of the host end of the electronic device facing the user. When the electronic device is working, the air inlet and outlet channel of the host end is opened by the mechanism to improve the heat dissipation capacity. This solution increases the pipe interface of the heat dissipation space from the system solution, increases the flow of air between the electronic device and the external environment, and thus improves the heat dissipation capacity. However, when the air inlet and outlet channels are in an open state, the air inlet and outlet channels on the host end are used to keep the closed channel shell in a raised state, and are located on the side facing the user when in use, making the electronic device lack integrity and simplicity in appearance. The third type is to increase the distance between the electronic device and the desktop by controlling the lifting of the electronic device foot pads, thereby improving the air inlet and outlet environment of the electronic device while making the electronic device lighter and thinner, thereby improving the heat dissipation capacity of the electronic device. However, this solution cannot systematically increase the heat dissipation space of the heat source, has no improvement effect on the internal heat dissipation environment of the electronic device, and has limited improvement in heat dissipation capacity.

[0160] Based on this, the present application provides a shell for an electronic device, which adjusts the cavity volume of the shell by changing the relative position of the first shell and the second shell in the shell of the electronic device. When the electronic device is in use, the second shell extends relative to the first shell, and the cavity volume of the shell becomes larger, which effectively enhances the heat dissipation performance of the electronic device; when the electronic device is idle, the second shell is hidden in the first shell, and the cavity volume of the shell becomes smaller, making the electronic device thinner and more beautiful. This solves the problem that the heat dissipation method of electronic devices in the prior art is limited by space, the heat dissipation capacity is limited, and the performance of the electronic device cannot be effectively enhanced; and while improving the heat dissipation capacity, it is impossible to take into account the requirements for thinness and appearance of electronic devices.

[0161] The present application also provides a housing assembly, a folding device, an electronic device, a hinge assembly and a foldable device, wherein the housing assembly, the folding device and the electronic device all use the housing for the electronic device. It should be noted that the electronic device is a type of electronic device equipped with a housing, which can be a foldable electronic device or a non-foldable electronic device, specifically including but not limited to a notebook computer, a tablet personal computer, a personal digital assistant (PDA), a personal computer (PC), a smart phone, a smart wearable device, a vehicle-mounted device, headphones, glasses, and this does not limit the scope of protection of the present application.

[0162] The structure of the housing for electronic equipment is first described below in conjunction with the principle diagram.

[0163] See also Figure 1a to Figure 1b , Figure 1a This is a schematic diagram of the structural principle of an implementation of a housing for an electronic device in a closed state according to an embodiment of the present application; Figure 1b This is a schematic diagram of the structural principle of an implementation of a housing for an electronic device in an unfolded state according to an embodiment of the present application.

[0164] like Figure 1a to Figure 1b As shown, the housing 3 includes a first housing 30 and a second housing 35. A hollow portion 31 is provided at the bottom of the first housing 30. The second housing 35 is movably connected to the portion of the first housing 30 located around the hollow portion 31, so that the second housing 35 can switch between a retracted position and an extended position relative to the first housing 30. In addition, the second housing 35 and the first housing 30 are surrounded together to form a cavity 32, and the cavity 32 is used to accommodate the electronic device 100 (see Figure 2a and Figure 2b ) of the electronic unit (not shown in the figure).

[0165] like Figure 1a As shown, when the second housing 35 is in the retracted position, the second housing 35 is located in the hollow portion 31. Figure 1b As shown, when the second shell 35 is in the extended position, at least part of the second shell 35 is located outside the hollow portion 31 and protrudes from the bottom of the first shell 30 in the first direction Q1. The first direction Q1 is parallel to the thickness direction of the shell 3.

[0166] like Figure 1a and Figure 1bAs shown, the cavity 32 formed by the second shell 35 and the first shell 30 when the second shell 35 is in the extended position is larger than the cavity 32 formed by the second shell 35 and the first shell 30 when the second shell 35 is in the retracted position. Or it can be understood that the volume of the cavity 32 when the second shell 35 is in the extended position is larger than the volume of the cavity 32 when the second shell 35 is in the retracted position.

[0167] It can be understood by those skilled in the art that the housing 3 is applied to the electronic device 100 (see Figure 2a and Figure 2b ), when the electronic device 100 is in use (see Figure 2b ), the top of the first shell 30 is the portion of the shell 3 facing the user's field of view in the first direction Q1, and the bottom of the second shell 35, or the second shell 35 and the first shell 30 is the portion of the shell 3 facing away from the user's field of view in the first direction Q1.

[0168] like Figure 1a and Figure 1b As shown, in the present application, the second shell 35 can be switched between a retracted position and an extended position relative to the first shell 30, and the volume of the cavity 32 enclosed by the second shell 35 and the first shell 30 when in the extended position is larger than the volume of the cavity 32 enclosed by the second shell 35 and the first shell 30 when in the retracted position. The shell 3 is applied to the electronic device 100. When the electronic device 100 is in use, the second shell 35 is in the extended position. At this time, the volume of the cavity 32 enclosed by the second shell 35 and the first shell 30 is larger, which can effectively increase the heat dissipation space of the electronic device 100 and improve the performance of the electronic device 100. The second shell 35 is located at the bottom of the shell 3, that is, located on the side of the shell 3 away from the user, and can be well hidden, reducing its impact on the overall appearance of the electronic device 100. When the electronic device 100 is in an idle state (i.e., not in use), the second shell 35 is in a retracted position. At this time, the second shell 35 is located in the hollow portion 31 at the bottom of the first shell 30, or it can be understood that the second shell 35 is hidden in the first shell 30 and will not occupy additional thickness space of the electronic device 100, making the electronic device 100 more lightweight and beautiful.

[0169] Therefore, the shell for electronic devices provided by the present application has a larger cavity volume of the shell when the electronic device is in use, which effectively enhances the heat dissipation performance of the electronic device; when the electronic device is in an idle state, the second shell is located in the hollow portion, the cavity volume of the shell becomes smaller, and the electronic device becomes thinner and more beautiful. This solves the problem that the heat dissipation method of electronic devices in the prior art is limited by space, the heat dissipation capacity is limited, and the performance of the electronic device cannot be effectively enhanced; and while improving the heat dissipation capacity, the requirements for thinness and appearance of the electronic device cannot be taken into account.

[0170] It should be noted that the specific shapes of the first shell 30 and the second shell 35 are not limited. For example, the first shell 30 may be a groove-shaped structure and the second shell 35 may be a groove-shaped structure; the first shell 30 may be a box structure and the second shell 35 may be a plate-shaped structure; the first shell 30 may be a groove-shaped structure and the second shell 35 may be a plate-shaped structure; the first shell 30 may be a plate-shaped structure and the second shell 35 may be a groove-shaped structure. This application does not impose any restrictions on this. In addition, the number of hollow portions 31 is not limited, and the number of hollow portions 31 may be one or more.

[0171] The following is an illustrative description of several possible structural forms of the first shell and the second shell in conjunction with the accompanying drawings.

[0172] See also Figure 1c to Figure 2b As shown, Figure 1c This is a schematic diagram of the structural principle of another implementation of the housing of an electronic device in a closed state according to an embodiment of the present application; Figure 1d This is a schematic diagram of the structural principle of another implementation of the housing of an electronic device in an unfolded state according to an embodiment of the present application; Figure 1e This is a schematic diagram of the structural principle of another implementation of the housing of an electronic device in a closed state according to an embodiment of the present application; Figure 1f This is a schematic diagram of the structural principle of another implementation of the housing of an electronic device in an unfolded state according to an embodiment of the present application; Figure 1g This is a schematic diagram of the structural principle of another implementation of the housing of an electronic device in a closed state according to an embodiment of the present application; Figure 1h This is a schematic diagram of the structural principle of another embodiment of the housing of an electronic device in an unfolded state according to an embodiment of the present application. Figure 2a This is a schematic diagram of an application scenario in which the housing of an electronic device is in a closed state according to an embodiment of the present application; Figure 2b A schematic diagram of an application scenario of a shell of an electronic device in an unfolded state according to an embodiment of the present application.

[0173] like Figure 1a to Figure 1b As shown, in one embodiment, the first shell 30 is a box structure, and the second shell 35 is a plate structure. The first shell 30 includes a top plate, a side wall connected to the outer periphery of the top plate, and a bottom plate connected to one end of the side wall away from the top plate, and the bottom plate is arranged in an annular frame structure, and the annular frame structure surrounds and forms a hollow portion 31. The top plate constitutes the top of the first shell 30 and serves as the top surface of the cavity 32, the side wall serves as the side wall surface of the cavity 32, and the bottom plate of the first shell 30 and the second shell 35 serve together as the bottom surface of the cavity 32.

[0174] like Figure 1c to Figure 1dAs shown, in another embodiment, the first shell 30 is a groove-shaped structure, and the second shell 35 is a plate-shaped structure. The first shell 30 includes a top plate and a side wall connected to the outer periphery of the top plate, and the end of the side wall away from the top plate is surrounded to form a hollow portion 31. The top plate constitutes the top of the first shell 30 and serves as the top surface of the cavity 32. The side wall serves as the side wall surface of the cavity 32, and the second shell 35 serves as the bottom surface of the cavity 32.

[0175] like Figure 1e to Figure 1f As shown, in another embodiment, the first shell 30 is a groove-shaped structure, and the second shell 35 is also a groove-shaped structure. The first shell 30 includes a top plate and a side wall connected to the outer periphery of the top plate, and the end of the side wall away from the top plate is surrounded to form a hollow portion 31. The top plate constitutes the top of the first shell 30 and serves as the top surface of the cavity 32; the second shell 35 includes a bottom plate and a side wall connected to the outer periphery of the bottom plate, and the bottom plate of the second shell 35 constitutes the bottom of the second shell 35 and serves as the bottom surface of the cavity 32. The side wall of the first shell 30 and the side wall of the second shell 35 together constitute the side wall surface of the cavity 32.

[0176] like Figure 1g to Figure 1h As shown, in another embodiment, the first shell 30 is a plate-like structure, and the second shell 35 is a groove-like structure. The space below the first shell 30 is a hollow portion 31, and the first shell 30 is used as the top surface of the cavity 32; the second shell 35 includes a bottom plate and a side wall connected to the outer periphery of the bottom plate, the bottom plate constitutes the bottom of the second shell 35 and is used as the bottom surface of the cavity 32, and the side wall is used as the side wall surface of the cavity 32.

[0177] It should be noted that there is no limitation on the way in which the second shell 35 switches between the first position and the second position relative to the first shell 30. The second shell 35 may slide along the first direction Q1 relative to the first shell 30, or may rotate relative to the first shell 30, or may slide and rotate relative to the first shell 30 at the same time.

[0178] When there are multiple hollow portions 31, the connection modes of the second shell 35 and the first shell 30 in each hollow portion 31 may be the same or different. For example, in one hollow portion 31, the second shell 35 is rotatably connected to the first shell 30; in the other hollow portions 31, the second shell 35 is slidably connected to the first shell 30. Figure 1a to Figure 1b As shown, in one embodiment, the first side edge portion 350 of the second shell 35 is rotatably connected to the first side edge portion 300 of the first shell 30 located around the hollow portion 31 through the first rotating shaft assembly 4, so that the second shell 35 can rotate around the first axis O1 relative to the first shell 30 between the retracted position and the extended position; wherein the first axis O1 is along the second direction Q2 ( Figure 1a and Figure 1b The direction perpendicular to the paper plane, see Fig.16 ) extends in the second direction Q2, and the second direction Q2 is perpendicular to the first direction Q1.

[0179] Furthermore, when the second housing 35 is in the extended position, a gap S is formed between the side edges of the second housing 35 except the first side edge and the portion of the first housing 30 located around the hollow portion 31 in the first direction Q1. The first side edge of the second housing 35 is rotatably connected to the first side edge of the first housing 30 via the first rotating shaft assembly 4. The volume of the cavity 32 enclosed by the first housing 30 and the second housing 35 is changed by the rotatable connection, thereby improving the heat dissipation performance of the electronic device 100 and taking into account the characteristics of the electronic device 100 being thin and light and beautiful.

[0180] Among them, the specific structures of the first shell 30, the second shell 35, and the first rotating shaft assembly 4 and the specific connection structure therebetween are not described in detail here, but are discussed in detail in conjunction with specific scenarios below.

[0181] It should be noted that the housing 3 may constitute part or the entire housing 3 of the electronic device 100. In one application scenario, the housing 3 constitutes a partial housing of the electronic device 100. For example, the electronic device 100 is a notebook computer, and the housing 3 is the housing of the system end part 102 of the notebook computer.

[0182] In another application scenario, the housing 3 constitutes the entire housing of the electronic device 100. For example, the electronic device 100 is a keyboard, and when in use, the second housing 35 rotates relative to the first housing 30, so that the keyboard is raised to an appropriate height, which is more ergonomic. For example, the electronic device 100 is a non-folding mobile phone, and the housing 3 is the housing of the non-folding mobile phone.

[0183] See also Figure 2a to Figure 2b The electronic device 100 to which the shell 3 is applied is a foldable electronic device, and the shell 3 only constitutes a partial shell of the electronic device 100.

[0184] like Figure 2a to Figure 2bAs shown, the electronic device 100 includes a folding device 1. The folding device 1 includes a housing assembly 2 and a third housing 10. The housing assembly 2 includes the housing 3 and a second shaft assembly 5. The second shaft assembly 5 is arranged on the first housing 30 of the housing 3 and connected to the third housing 10, so that the first housing 30 of the housing 3 can rotate relative to the third housing 10 around the second axis O2 through the second shaft assembly 5. The relative rotation of the two housings 3 of the electronic device 100 is simple. The electronic device 100 in the present application adopts the housing 3, which solves the problems that the heat dissipation method of the electronic device 100 in the prior art is limited by space, the heat dissipation capacity is limited, the performance of the electronic device 100 cannot be effectively enhanced, and the lightness and appearance requirements of the electronic device 100 cannot be taken into account while improving the heat dissipation capacity.

[0185] It should be noted that the second shaft assembly 5 can link the second shell 35 to rotate relative to the first shell 30, or it can not link the second shell 35 to rotate relative to the first shell 30 (that is, it can only make the third shell 10 rotate relative to the first shell 30), and this application does not impose any restrictions on this.

[0186] like Figure 2a to Figure 2b As shown, in one embodiment, when the first housing 30 and the third housing 10 rotate relative to each other through the second shaft assembly 5, the second shaft assembly 5 can transmit power to the second housing 35, thereby linking the second housing 35 to rotate with the first housing 30 through the first shaft assembly 4. There is no need to set up an additional driving device to drive the first housing 30 and the second housing 35 to rotate relative to each other, which reduces the volume of the electronic device 100 and reduces the production cost. In addition, when the housing 3 and the third housing 10 of the electronic device 100 move away from or close to each other, the cavity 32 (see Figure 1a and Figure 1b ) volume is correspondingly expanded or contracted, and the user has a better interactive experience when using the electronic device 100. That is to say, the present application realizes the synchronous adjustment of the volume of the cavity 32 of the shell 3, while enhancing the heat dissipation performance of the electronic device 100 and improving the interactive experience of the user when using the electronic device 100.

[0187] Among them, the specific structures of the above-mentioned shell 3, the third shell 10, and the second shaft assembly 5 and the specific connection structure therebetween, as well as how the second shaft assembly 5 specifically links the first shaft assembly 4 to rotate will not be elaborated here, but will be discussed in detail in conjunction with specific scenarios below.

[0188] The following describes the application scenario of the housing by taking a laptop computer as an example.

[0189] See also Figures 3 to 11 , Figure 3This is a schematic diagram of the structure of the electronic device in the unfolded state according to the embodiment of the present application; Figure 4 This is a schematic diagram of the structure of the electronic device in a closed state according to an embodiment of the present application; Figure 5 This is a schematic diagram of the exploded structure of the electronic device in a closed state according to an embodiment of the present application; Figure 6 This is a schematic diagram of the structure of the electronic device according to the embodiment of the present application when it is in an unfolded state from a rear perspective; Figure 7 This is a schematic diagram of the structure of the electronic device according to the embodiment of the present application when it is in a closed state from the back side; Figure 8 This is a schematic diagram of the structure of the electronic device according to the embodiment of the present application in the unfolded state from a front side perspective; Fig. 9 This is a schematic diagram of the structure of the electronic device according to the embodiment of the present application when it is in a closed state from a front side perspective; Fig.10 for Figure 3 Schematic cross-sectional view along the AA direction; Fig.11 for Figure 4 Schematic cross-sectional view along the BB direction.

[0190] like Figures 3 to 11 As shown, the electronic device 100 includes a display end portion 101 and a system end portion 102 that are rotatably connected. It should be noted that the structure of the display end portion 101 is not limited. In one embodiment, the display end portion 101 includes a display end housing 103 and a display 107 installed on the display end housing 103. The third housing 10 mentioned above constitutes the display end housing 103, or it can be understood that the third housing 10 mentioned above is used as the housing 3 of the display end portion 101. The display 107 is used to display the result of information processing in the system end portion 102, and can be, but not limited to, an organic light emitting diode display screen, an active matrix organic light emitting diode or an active matrix organic light emitting diode display screen, etc., and this application does not limit this. The user can interact with the display 107 of the electronic device 100 through external devices such as a keyboard 106, a touchpad 108 and a mouse.

[0191] The system end part 102 is the operating end of the electronic device 100, which is used to store and process information. It should be noted that the specific structure of the system end part 102 is not limited. In one embodiment, the system end part 102 includes a system end shell 104 and an electronic unit installed in the inner cavity of the system end shell 104. The first shell 30 and the second shell 35 mentioned above together constitute the system end shell 104, or it can be understood that the shell 3 mentioned above is used as the shell 3 of the system end part 102. The top of the first shell 30 can be used to install the keyboard 106, touchpad 108 and other components of the system end part 102, and the bottom surface of the second shell 35 facing away from the cavity 32 is provided with components such as foot pads 105.

[0192] It should be noted that the specific structure and type of the electronic unit are not limited. In one example, the electronic unit includes a motherboard stack assembly, which can be understood as a functional device in the system end portion 102, such as a battery, a host, a fan, a heat sink, a speaker, an antenna, etc. This application does not limit this.

[0193] The specific form of the host in the system end part 102 is not limited, for example, it can be an integrated system including processing modules such as memory, power supply, optical drive, processor (Central Processing Unit, CPU), etc. The processor can realize functions such as running the operating system, processing various data, running applications, and controlling multiple hardware connected to the processor. By electrically connecting the keyboard 106, touchpad 108, mouse and other hardware to the processor, the user's operation information can be sent to the processor, and the processor can issue corresponding instructions after analysis and calculation.

[0194] Furthermore, the host is electrically connected to the touchpad 108. When the user slides, presses, or performs other operations on the touchpad 108, the touchpad 108 sends a touch signal to the host according to the user's operation. The host identifies and analyzes the received signal and issues corresponding instructions to complete the relevant operations and map the operation interface to the display 107.

[0195] It should be noted that the structure illustrated in the embodiment of the present application does not constitute a specific limitation on the electronic device 100. In other embodiments, the electronic device 100 may include more or fewer components than shown in the figure, for example, the electronic device 100 may also include devices such as a camera and an infrared sensor.

[0196] In some examples, the housing 3 formed by the display end housing 103 and the system end housing 104 is a back cover, a middle frame or other frame supporting and installing the electronic device 100. The structure of the housing 3 will be described in detail below and will not be described in detail here.

[0197] It should be noted that the display end housing 103 and the system end housing 104 in the electronic device 100 are rotatably connected through the second hinge assembly 5, and the display end housing 103, the system end housing 104 and the second hinge assembly 5 together constitute the folding device 1 of the electronic device 100. Among them, the system end housing 104 and the second hinge assembly 5 together constitute the housing assembly 2 of the electronic device 100, and the second hinge assembly 5 is arranged on the above-mentioned housing 3 and is used to rotate the system end housing 104 relative to the display end housing 103. The structure of the hinge assembly will be further expanded in detail below, and no further explanation will be given here.

[0198] The second rotating shaft assembly 5 connects the display end portion 101 and the system end portion 102, so that the display end portion 101 can rotate relative to the system end portion 102. In different usage scenarios, the electronic device 100 can have different usage states. Figure 3 The electronic device 100 is shown in an unfolded state. Figure 4 The electronic device 100 is shown in a closed state. When the electronic device 100 is in an open state, the display end portion 101 opens at a certain angle relative to the system end portion 102, that is, there is a certain angle between the display end portion 101 and the system end portion 102. It can be understood by those skilled in the art that the opening angle of the electronic device 100 can be adjusted according to the needs of the user, that is, the display end portion 101 can hover at any angle relative to the system end portion 102. For example, the opening angle of the electronic device 100 can be 130°, 110°, 100°, etc., and this application does not limit this. When the display end portion 101 rotates relative to the system end portion 102 until it can no longer rotate, the electronic device 100 is in a fully open state. The opening angle of the electronic device 100 in the fully opened state depends on the structure of the second rotating shaft assembly 5, the structure of the electronic device 100 itself, etc. The specific angle of the full opening is not limited, and can be 150°, 160°, 170°, etc., and the present application does not limit this. In addition, the angles illustrated in the present application are allowed to have a small deviation. For example, when the electronic device 100 is in the fully opened state, its opening angle can be 150°, or about 150°, such as 151°, 149°, etc., and the same understanding can be made for other angles in the following text. When the electronic device 100 is in the closed state, the angle between the display end portion 101 and the system end portion 102 can be approximately regarded as 0°.

[0199] The structure of the electronic device provided in the embodiment of the present application and the functions of its components are introduced above in combination with the accompanying drawings. The structural composition of the housing of the electronic device and the principle of achieving the change of its cavity volume are explained below in combination with the accompanying drawings.

[0200] See also Figures 12 to 19 , Fig.12 It is a cross-sectional schematic diagram of the system end portion of the electronic device in the embodiment of the present application in a closed state; Fig.13 It is a cross-sectional schematic diagram of the system end portion of the electronic device according to the embodiment of the present application in an unfolded state; Fig.14 This is a schematic structural diagram of a first portion of a housing in a system end portion of an electronic device according to an embodiment of the present application; Fig.15 This is a schematic structural diagram of a second part of a housing in a system end portion of an electronic device according to an embodiment of the present application; Fig.16 It is a schematic diagram of the structure of the system end part of the electronic device in the embodiment of the present application in the front view when it is in the unfolded state, wherein the first part of the housing of the electronic device is removed; Fig.17 This is a schematic structural diagram of the system end portion of the electronic device according to an embodiment of the present application from the perspective of the back side of the housing; Fig.18 It is a schematic diagram of the structure of the housing in the system end part of the electronic device in the embodiment of the present application when it is in the unfolded state, wherein the first part of the housing is removed; Fig.19 It is a schematic diagram of the three-dimensional structure of the second shell of the shell in the system end part of the electronic device according to the embodiment of the present application.

[0201] like Figures 12 to 15 As shown, combined with Figure 1a to Figure 1b It is understood that the composition structure of the first shell 30 is not limited. For example, it can be an integrated structure or a combination of one or more parts.

[0202] like Figures 12 to 15 As shown, combined with Figure 1a to Figure 1b It is understood that in one embodiment, the first shell 30 includes a first partial shell 33 and a second partial shell 34, the first partial shell 33 is set as an integrated groove structure, and includes a top plate and an outer peripheral edge connected to the top plate and a side wall protruding from the top plate in the first direction Q1, the second partial shell 34 is set as an integrated annular frame structure, the inner peripheral edge of the second partial shell 34 is surrounded to form a hollow portion 31, and the outer peripheral edge of the second partial shell 34 is fixedly connected to an end of the side wall of the first partial shell 33 away from the top plate. The first shell 30 is a groove structure composed of a first partial shell 33 including a top plate and a side wall and a second partial shell 34 of an annular frame structure. The first shell 30 adopts a split structural design, which is decomposed into various sub-components (i.e., the first partial shell 33 and the second partial shell 34) with a simpler structure, which effectively reduces the production cost and is easy to assemble.

[0203] like Figures 16 to 19 As shown, combined with Figure 1a to Figure 1b It is understood that the first side edge portion of the second housing 35 can be an edge portion on any side of the second housing 35. In one example, the first side edge portion of the second housing 35 is an edge portion away from the display end housing 103.

[0204] like Figures 16 to 19 As shown, combined with Figure 1a to Figure 1b It is understood that when the second shell 35 is in the retracted position, the surface of the second shell 35 facing away from the cavity 32 may be flush with the bottom surface of the first shell 30 around the hollow portion 31 , or may not be flush.

[0205] like Fig.12 As shown, combined with Figure 1a to Figure 1bIt is understood that in one embodiment, when the second shell 35 is in the retracted position, the outer edge area of ​​the surface of the second shell 35 facing away from the cavity 32 is flush with the bottom surface of the portion of the first shell 30 located around the hollow portion 31. The bottom surface of the second shell 35 is flush with the bottom surface of the portion of the first shell 30 around the hollow portion 31, making the electronic device 100 more integrated and more beautiful.

[0206] It is further necessary to explain that if Fig.13 , Fig.18 and Fig.19 As shown, combined with Figure 1a to Figure 1b It is understood that when the second housing 35 is in the extended position, the gap between the second housing 35 and the first housing 30 located around the hollow portion 31 may be provided with a retaining wall structure 36, or may not be provided with a retaining wall structure 36. Furthermore, when the retaining wall structure 36 is provided, the retaining wall structure 36 and the second housing 35 may adopt an integrated structure or a split structure.

[0207] In one embodiment, the side edges of the second shell 35 other than the first side edge are provided with a retaining wall structure 36 extending along the first direction Q1 toward the inside of the cavity 32 , and the second shell 35 and the retaining wall structure 36 are an integrated structure.

[0208] Among them, Fig.12 and Fig.13 As shown, combined with Figure 1a to Figure 1b It is understood that when the second shell 35 is in the retracted position, the retaining wall structure 36 is located on the side of the hollow portion 31 facing the top of the first shell 30. When the second shell 35 is in the extended position, the retaining wall structure 36 is located in the gap, and the portion of the retaining wall structure 36 away from the second shell 35 is located around the hollow portion 31, and the retaining wall structure 36, the second shell 35, and the first shell 30 together surround and form a cavity 32.

[0209] The second housing 35 is provided with a retaining wall structure 36 at the side edges other than the first side edge, which effectively reduces the possibility of pollutants entering the interior of the electronic device 100 and prolongs the service life of the electronic device 100. In addition, when the second housing 35 is located at a different position relative to the first housing 30, the second housing 35 and the first housing 30 are both integral structures, making the electronic device 100 more integrated and more beautiful.

[0210] Furthermore, the side wall of the retaining wall structure 36 may or may not have a through hole 37 ; and when a through hole 37 is provided on the side wall of the retaining wall structure 36 , the number of the through holes 37 is not limited, and may be one or more.

[0211] In one example, if Figure 18 to Figure 19 As shown, combined with Figure 12 to Figure 13It is understood that a plurality of through holes 37 are provided on the side wall of the retaining wall structure 36. When the second housing 35 is in the extended position, the cavity 32 is connected to the outside of the housing 3 through the plurality of through holes 37, and the portion of the retaining wall structure 36 away from the second housing 35 is connected to the portion of the first housing 30 located around the hollow portion 31. The through holes 37 are provided on the side wall of the retaining wall structure 36, and when the second housing 35 is in the extended position, the through holes 37 of the retaining wall structure 36 are used for airflow in and out, which can effectively improve the heat dissipation performance of the electronic device 100.

[0212] The structural composition of the housing of the electronic device and the principle of achieving the change of its cavity volume are described in detail above in conjunction with the drawings. The structure, function and arrangement of the first rotating shaft assembly are described in detail below in conjunction with the drawings.

[0213] See also Figure 20 to Figure 21b , Fig. 20 This is a schematic diagram of the structure of a first rotating shaft assembly of a housing in a system end portion of an electronic device according to an embodiment of the present application; Fig.21a It is a schematic diagram of the exploded structure of the first rotating shaft assembly of the housing in the system end part of the electronic device according to the embodiment of the present application; Figure 21b for Fig.16 Schematic diagram of the local enlarged structure of part C in the middle.

[0214] like Figure 20 to Figure 21b As shown, combined with Fig.16 and Fig.18 It is understood that in one embodiment, the first rotating shaft assembly 4 includes a first fixed bracket 41, a second fixed bracket 44 and a first connecting shaft 47, the first fixed bracket 41 is fixed to the first side edge portion of the first shell 30 located around the hollow portion 31, the second fixed bracket 44 is fixed to the first side edge portion of the second shell 35, and the first fixed bracket 41 is rotatably connected to the second fixed bracket 44 through the first connecting shaft 47, so that the second fixed bracket 44 can rotate around the first axis O1 relative to the first fixed bracket 41, so that the second shell 35 can rotate around the first axis O1 relative to the first shell 30.

[0215] The first shell 30 fixedly connected to the first fixing bracket 41 and the second shell 35 fixedly connected to the second fixing bracket 44 are rotatably connected via the first connecting shaft 47 in the first rotating shaft assembly 4. The relative rotation of the first shell 30 and the second shell 35 is simple.

[0216] Among them, each of the first fixed bracket 41 and the second fixed bracket 44 includes a mounting plate and a sleeve connected to one side of the mounting plate. The mounting plate 42 of the first fixed bracket 41 is fixedly and detachably connected to the first shell 30, and the mounting plate 45 of the second fixed bracket 44 is fixedly and detachably connected to the second shell 35.

[0217] It should be noted that the fixing and detachable connection method between the mounting plate 42 of the first fixing bracket 41 and the first shell 30 is not limited, and the fixing and detachable connection method between the mounting plate 45 of the second fixing bracket 44 and the second shell 35 is not limited. For example, it can be a fixing and detachable connection method such as screw connection, clamping, etc. In addition, the fixing and detachable connection method between the mounting plate 42 of the first fixing bracket 41 and the first shell 30 and the fixing and detachable connection method between the mounting plate 45 of the second fixing bracket 44 and the second shell 35 can be the same or different.

[0218] In one example, the mounting plate 42 of the first fixing bracket 41 is fixed and detachably connected to the first shell 30 by means of screw connection, and the mounting plate 45 of the second fixing bracket 44 is fixed and detachably connected to the second shell 35 by means of screw connection. The fixing connection method between the mounting plate 42 of the first fixing bracket 41 and the first shell 30 is the same as the fixing connection method between the mounting plate 45 of the second fixing bracket 44 and the second shell 35.

[0219] Furthermore, the mounting plate 42 and the sleeve 43 of the first fixed bracket 41 can be an integral structure or a split structure that is fixedly and detachably connected; the mounting plate 45 and the sleeve 46 of the second fixed bracket 44 can be an integral structure or a split structure that is fixedly and detachably connected. And the structural composition between the mounting plate 42 and the sleeve 43 of the first fixed bracket 41 and the structural composition between the mounting plate 45 and the sleeve 46 of the second fixed bracket 44 can be the same or different. Exemplarily, the mounting plate 42 and the sleeve 43 of the first fixed bracket 41 are an integral structure, and the mounting plate 45 and the sleeve 46 of the second fixed bracket 44 are also an integral structure, and the structural composition between the mounting plate 42 and the sleeve 43 of the first fixed bracket 41 and the structural composition between the mounting plate 45 and the sleeve 46 of the second fixed bracket 44 are the same.

[0220] It should be further noted that there is no limitation on the manner of rotatably connecting the first fixed bracket 41 and the second fixed bracket 44. For example, the rotatably connecting can be achieved through the first connecting shaft 47 (or it can be understood that a real shaft structure is adopted), or through a virtual shaft structure in which an arc-shaped slide rail and an arc-shaped slide groove cooperate to rotate.

[0221] like Figure 20 to Figure 21b As shown, combined with Fig.16 and Fig.18 It is understood that, in one embodiment, the rotation connection is achieved through the first connecting shaft 47, and the first connecting shaft 47 includes an anti-rotation shaft segment 48 and a rotation shaft segment 49 which are sequentially connected and relatively fixed along the axial direction thereof.

[0222] Among them, the anti-rotation shaft section 48 is sleeved in the sleeve 43 of the first fixed bracket 41 and fixed relative to the sleeve 43 of the first fixed bracket 41 along its circumferential direction. The rotating shaft section 49 is sleeved in and can be rotatably connected to the sleeve 46 of the second fixed bracket 44 around the first axis O1, so that the first fixed bracket 41 is rotatably connected to the second fixed bracket 44 through the first connecting shaft 47.

[0223] In other alternative embodiments, the following structure may also be adopted, that is, the rotating shaft segment 49 is sleeved in the sleeve 43 of the first fixed bracket 41 and can be rotatably connected around the first axis O1, and the anti-rotation shaft segment 48 is sleeved in the sleeve 46 of the second fixed bracket 44 and fixed relative to the sleeve 46 of the second fixed bracket 44 along its circumferential direction, so that the first fixed bracket 41 is rotatably connected to the second fixed bracket 44 through the first connecting shaft 47.

[0224] It can be understood that the connection method between the first connecting shaft 47 and the first fixed bracket 41 and the second fixed bracket 44 is that one end of the first connecting shaft 47 is rotationally connected to one of the fixed brackets between the first fixed bracket 41 and the second fixed bracket 44, and the other end of the first connecting shaft 47 is circumferentially fixedly connected to the other fixed bracket.

[0225] Specifically, the method for circumferentially fixedly connecting the first connecting shaft 47 and the corresponding fixed bracket is that the cross-section of one end of the first connecting shaft 47 is set as a special-shaped surface, and an axial hole corresponding to the shape of the special-shaped surface is set on the sleeve on one side of the corresponding fixed bracket. The end of the first connecting shaft 47 with the special-shaped surface is circumferentially positioned and connected with the axial hole of the corresponding fixed bracket through surface matching.

[0226] One of the first fixing bracket 41 and the second fixing bracket 44 is circumferentially fixed to the first connecting shaft 47, and the other is rotatably connected to the first connecting shaft 47, so that the first housing 30 fixedly connected to the first fixing bracket 41 and the second housing 35 fixedly connected to the second fixing bracket 44 are rotatably connected through the first rotating shaft assembly 4. The first rotating shaft assembly 4 for realizing the relative rotation of the first housing 30 and the second housing 35 is simple in structure and easy to assemble.

[0227] It should be noted that the anti-rotation shaft section 48 and the rotating shaft section 49 of the first connecting shaft 47 can be an integrated structure or a split structure. Exemplarily, the anti-rotation shaft section 48 and the rotating shaft section 49 of the first connecting shaft 47 are an integrated structure.

[0228] It should be further explained that the number of the first rotating shaft components 4 provided on the first side edge portion of the second housing 35 is not limited, and may be one or more. When the number of the first rotating shaft components 4 is multiple, the arrangement of the multiple first rotating shaft components 4 on the first side edge portion of the second housing 35 is not limited. For example, they may be arranged in abutment along the second direction Q2, or they may be arranged at intervals along the second direction Q2.

[0229] In one embodiment, if Fig.16 and Fig.18 As shown, the first side edge of the second housing 35 is rotatably connected to the first side edge of the first housing 30 located around the hollow portion 31 through two first rotating shaft assemblies 4, and the two first rotating shaft assemblies 4 are spaced apart in the second direction Q2. The first housing 30 and the second housing 35 are rotatably connected through the two first rotating shaft assemblies 4 spaced apart in the second direction Q2, and the rotation process is smoother.

[0230] It should be noted that the two first rotating shaft components 4 can be symmetrically arranged or asymmetrically arranged. In one example, the two first rotating shaft components 4 are symmetrically arranged.

[0231] The structure, function and arrangement of the first rotating shaft assembly are described in detail above in conjunction with the accompanying drawings. The connection relationship and structure between the components of the rotating shaft mechanism in the second rotating shaft assembly are described in detail below in conjunction with the accompanying drawings.

[0232] See also Figures 22a to 26b , Fig.22a It is a partial structural schematic diagram of the part where the second rotating shaft assembly is located in the electronic device of the embodiment of the present application in the unfolded state, wherein the first part of the housing is removed; Figure 22b It is a schematic diagram of the partial structure of the other side of the part where the second rotating shaft assembly is located in the electronic device of the embodiment of the present application in the unfolded state, wherein the first part of the housing is removed; Fig.23 This is a schematic structural diagram of a second rotating shaft assembly of an electronic device according to an embodiment of the present application; Fig.24 This is a schematic diagram of the exploded structure of the second rotating shaft assembly of the electronic device according to an embodiment of the present application; Fig.25a This is a schematic structural diagram of a rotating bearing frame in a second rotating shaft assembly of an electronic device according to an embodiment of the present application; Fig.25b This is a schematic structural diagram of a second connecting shaft in a second rotating shaft assembly of an electronic device according to an embodiment of the present application; Fig.26a This is a schematic diagram of the structure of the third housing in the system end portion of the electronic device according to an embodiment of the present application; Figure 26b for Fig.26a Schematic diagram of the local enlarged structure of part D in the middle.

[0233] The second part housing 34 of the first housing 30 is rotatably connected to the third housing 10 via the second rotating shaft assembly 5. It should be noted that the specific structure of the second rotating shaft assembly 5 is not limited.

[0234] like Figures 22a to 24 As shown, combined with Fig.16 and Fig.18 It is understood that, in one embodiment, the second rotating shaft assembly 5 includes a rotating shaft mechanism 51 and a transmission structure 56 .

[0235] The rotating shaft mechanism 51 includes a rotating shaft frame 7 and a second connecting shaft 6, wherein the rotating shaft frame 7 is fixedly connected to a side of the first housing 30 away from the first rotating shaft assembly 4. The second connecting shaft 6 is rotatably connected to the rotating shaft frame 7 around the second axis O2, so that the second connecting shaft 6 can switch between a first position and a second position relative to the rotating shaft frame 7, and the second connecting shaft 6 is fixedly connected to the third housing 10, so that the first housing 30 can rotate relative to the third housing 10 around the second axis O2 through the rotating shaft mechanism 51. The second axis O2 is parallel to the first axis O1.

[0236] The transmission structure 56 is connected between the second connecting shaft 6 and a side of the second shell 35 away from the first side edge portion. In response to the rotation of the second connecting shaft 6 relative to the rotating bearing frame 7, the transmission structure 56 can drive the second shell 35 to rotate around the first axis O1 relative to the first shell 30 between a retracted position and an extended position.

[0237] When the second connecting shaft 6 is located at the first position relative to the rotating bearing frame 7, the third housing 10 is in a closed state relative to the first housing 30, and the second housing 35 is in a retracted position relative to the first housing 30. When the second connecting shaft 6 is located at the second position relative to the rotating bearing frame 7, the third housing 10 is in an expanded state relative to the first housing 30, and the second housing 35 is in an extended position relative to the first housing 30.

[0238] When the second connecting shaft 6 switches from the first position to the second position, the transmission structure 56 , driven by the second connecting shaft 6 , links the second housing 35 to rotate from the retracted position to the extended position relative to the first housing 30 .

[0239] When the second connecting shaft 6 switches from the second position to the first position, the transmission structure 56 , driven by the second connecting shaft 6 , links the second housing 35 to rotate from the extended position to the retracted position relative to the first housing 30 .

[0240] When the first shell 30 and the third shell 10 rotate relative to each other through the rotating shaft mechanism 51, the transmission structure 56 transmits power to the second shell 35 driven by the second connecting shaft 6, thereby linking the second shell 35 to rotate with the first shell 30 through the first connecting shaft 47. There is no need to set up an additional driving device to drive the first shell 30 and the second shell 35 to rotate relative to each other, which reduces the volume of the electronic device 100 and reduces the production cost. In addition, when the shell 3 and the third shell 10 of the electronic device 100 move away from or close to each other, the volume of the cavity 32 surrounded by the first shell 30 and the second shell 35 expands or contracts accordingly, and the user has a better interactive experience when using the electronic device 100.

[0241] It should be noted that the fixing method of the swivel bearing frame 7 and the first housing 30 is not limited, for example, it can be a fixing connection method such as screw connection, welding, bonding, etc. Exemplarily, the swivel bearing frame 7 and the first housing 30 are fixedly connected by screw connection.

[0242] Furthermore, the specific manner of rotationally connecting the second connecting shaft 6 and the swivel bearing frame 7 is not limited, for example, it can be a rotationally connected by a shaft hole, or a virtual shaft rotationally connected by an arc-shaped slide rail and an arc-shaped slide groove.

[0243] In one example, if Figures 22a to 25a As shown, a sleeve 71 is provided on one side of the first side edge of the rotating bearing frame 7 away from the second shell 35, and a slot 72 is provided on the wall of the sleeve 71. One end of the second connecting shaft 6 is sleeved in the sleeve 71 and can be rotatably connected to the rotating bearing frame 7 around the second axis O2.

[0244] The sleeve 71 and the swivel bearing frame 7 may be an integrated structure or a split structure that is fixedly and detachably connected. Exemplarily, the sleeve 71 and the swivel bearing frame 7 are an integrated structure.

[0245] Specifically, the sleeve 71 of the swivel bearing frame 7 and one end of the second connecting shaft 6 are fitted in an interference fit. When the second connecting shaft 6 and the swivel bearing frame 7 rotate relative to each other, the notch 72 on the wall of the sleeve 71 is expanded by force, generating a reaction force, i.e., a damping force, on the second connecting shaft 6 to prevent the second connecting shaft 6 and the swivel bearing frame 7 from rotating relative to each other. When the swivel bearing frame 7 and the second connecting shaft 6 are not subjected to external force, the two can remain relatively still and do not rotate.

[0246] It should be noted that the fixed connection method between the other end of the second connecting shaft 6 and the other housing 3 is not limited, for example, it can be a fixed connection method such as welding, interference fit connection, etc. that simultaneously constrains the axial direction and the circumferential direction, or a fixed connection method that constrains the axial direction and the circumferential direction respectively. Exemplarily, the other end of the second connecting shaft 6 and the other housing 3 adopt a fixed connection method that constrains the axial direction and the circumferential direction respectively.

[0247] Specifically, Figures 22a to 26b As shown, an extension portion 12 is provided on one side of the third housing 10 close to the housing 3, and a mounting hole 13 is provided in the extension portion 12. The other end of the second connecting shaft 6 is sleeved in the mounting hole 13 of the extension portion 12 of the third housing 10 and fixed relative to the mounting hole 13 of the third housing 10 along its circumferential direction. The fixing method of the third housing 10 and the second connecting shaft 6 is simple and compact.

[0248] Furthermore, the shape of the mounting hole 13 for circumferentially fixing the other end of the second connecting shaft 6 is not limited, for example, it can be a gear shape, a rectangular shape, a bar hole shape, an arc-shaped ladder block shape, etc. In one example, the shape of the mounting hole 13 is an arc-shaped ladder block, and the other end of the second connecting shaft 6 is also set to a corresponding arc-shaped ladder block, and the two are matched through the shaft hole to fix the second connecting shaft 6 and the third housing 10 circumferentially.

[0249] Furthermore, the second connecting shaft 6 is configured as a stepped shaft structure, one end of the second connecting shaft 6 is axially fixed to the rotating bearing frame 7, and the shoulder of the other end of the second connecting shaft 6 abuts against the extension portion 12 of the third shell 10, thereby axially fixing the other end of the second connecting shaft 6 to the third shell 10.

[0250] It should be further explained that the extension portion 12 and the third housing 10 can be an integral structure or a split structure. In one example, the extension portion 12 and the third housing 10 adopt an integral structure. In addition, the mounting hole 13 of the extension portion 12 of the third housing 10 can penetrate along the second direction Q2 or not. Exemplarily, the mounting hole 13 of the extension portion 12 of the third housing 10 penetrates along the second direction Q2.

[0251] The connection relationship and structure between the various components of the shaft mechanism in the second shaft assembly are described in detail above in conjunction with the accompanying drawings. The connection relationship, structure and transmission process between the various components of the transmission structure are described in detail below in conjunction with the accompanying drawings.

[0252] See also Figures 27 to 31 , Fig. 27 This is a schematic diagram of the structure of a connecting rod in a second rotating shaft assembly of an electronic device according to an embodiment of the present application; Fig.28 This is a schematic structural diagram of a third fixing bracket in a second rotating shaft assembly of an electronic device according to an embodiment of the present application; Fig.29Schematic diagram of the relative position relationship between the third fixing bracket and the fourth connecting shaft of the electronic device of the embodiment of the present application, when the second connecting shaft is in the first position and the second position respectively; Fig.30 A schematic diagram of the relative position relationship between the second connecting shaft and the connecting rod during the rotation of the second connecting shaft of the electronic device according to an embodiment of the present application from the first position to the second position, including when the second connecting shaft is in the first position, the second position, and the intermediate state between the first position and the second position; Fig.31 This is a schematic diagram of the relative position relationship between the second connecting shaft and the connecting rod during the process of the second connecting shaft of the electronic device in an embodiment of the present application rotating from the second position to the first position, including when the second connecting shaft is in the first position, the second position and the intermediate state between the first position and the second position respectively.

[0253] It should be noted that the specific structure of the transmission structure 56 in the second rotating shaft assembly 5 is not limited, for example, it can be a transmission structure 56 such as gear transmission, cam connecting rod 8 transmission, etc.

[0254] In one embodiment, if Figure 27 to Figure 28 As shown, combined with Figures 22a to 24 It is understood that the transmission structure 56 in the second rotating shaft assembly 5 adopts the cam connecting rod 8 structure for transmission. The transmission structure 56 includes a connecting rod 8 and a third fixed bracket 52. The connecting rod 8 is rotatably connected to the rotating bearing frame 7 through the third connecting shaft 54, so that the connecting rod 8 can rotate relative to the rotating bearing frame 7 around the third axis O3, and one end of the connecting rod 8 cooperates with the second connecting shaft 6 to drive the connecting rod 8 to rotate relative to the rotating bearing frame 7 through the rotation of the second connecting shaft 6; wherein the third axis O3 is parallel to the second axis O2. The other end of the connecting rod 8 is rotatably and slidably connected to the third fixed bracket 52 through the fourth connecting shaft 55, and the third fixed bracket 52 is fixedly connected to the side of the second housing 35 away from the first side edge portion.

[0255] In response to the rotation of the second connecting shaft 6 relative to the rotating bearing bracket 7 , the transmission structure 56 can drive the second housing 35 to rotate around the first axis O1 relative to the first housing 30 between the retracted position and the extended position.

[0256] When the second connecting shaft 6 rotates, the connecting rod 8 matched with it is driven to rotate relative to the rotating bearing frame 7 through the third connecting shaft 54, so that the other end of the connecting rod 8 rotates and slides with the third fixed bracket 52 through the fourth connecting shaft 55, thereby making the second housing 35 fixedly connected to the third fixed bracket 52 rotate relative to the first housing 30 around the first axis O1. The transmission method for transmitting the power of the second connecting shaft 6 to the second housing 35 is simple, and the components of the transmission structure 56 are simple in structure, which is convenient for processing and assembly.

[0257] It should be noted that the specific structure of the connecting rod 8 being rotatably connected to the slewing bearing frame 7 through the third connecting shaft 54 ​​is not limited. For example, the third connecting shaft 54 ​​can be a real shaft structure, the third connecting shaft 54 ​​is fixedly connected to the slewing bearing frame 7 or one side of the connecting rod 8 along the second direction Q2, and an axial hole is provided on the corresponding side of the connecting rod 8 or the slewing bearing frame 7, and the relative rotation of the connecting rod 8 and the slewing bearing frame 7 is realized through the cooperation of the axial hole; the third connecting shaft 54 ​​can also be a virtual shaft structure, and the connecting rod 8 and the slewing bearing frame 7 are respectively provided with an arc-shaped slide rail and an arc-shaped slide groove, and the rotatable connection of the connecting rod 8 and the slewing bearing frame 7 is realized through the cooperation of the arc-shaped slide rail and the arc-shaped slide groove.

[0258] In one embodiment, if Figures 22a to 25a , Fig. 27 As shown, an extension platform 73 is provided on one side of the swivel bearing frame 7 close to the connecting rod 8 , and a groove 74 extending toward the top surface of the extension platform 73 is formed on the bottom surface of the extension platform 73 .

[0259] The connecting rod 8 is penetrated through the groove 74 of the extension platform 73 along its length direction, and a first axial hole 81 is opened in the middle of the connecting rod 8 along its length direction. The third connecting shaft 54 ​​is penetrated through the two side walls of the groove 74 and the first axial hole 81 of the connecting rod 8 along its axial direction, so that the connecting rod 8 is rotatably connected to the rotating bearing frame 7 through the third connecting shaft 54 ​​and the extension platform 73.

[0260] The connecting rod 8 is matched with the third connecting shaft 54 ​​in the shaft hole and penetrates the groove 74 of the swivel bearing frame 7, and is rotatably connected with the swivel bearing frame 7 through the third connecting shaft 54. The structure of the swivel bearing frame 7 and the connecting rod 8 for relative rotation is simple.

[0261] The opening direction of the groove 74 of the bearing frame 7 is not limited, for example, it can be the top surface of the bearing frame 7 or the bottom surface of the bearing frame 7. In one example, the opening direction of the groove 74 of the bearing frame 7 is the bottom surface of the bearing frame 7.

[0262] Furthermore, the extension platform 73 of the swivel bearing frame 7 and the swivel bearing frame 7 may be an integrated structure, or may be a split structure that is fixedly and detachably connected. In one example, the extension platform 73 of the swivel bearing frame 7 and the swivel bearing frame 7 are an integrated structure.

[0263] It should be noted that the third connecting shaft 54 ​​can be fixedly connected to one of the two side walls of the groove 74 and the first shaft hole 81 of the connecting rod 8, and rotatably connected to the other. Exemplarily, the third connecting shaft 54 ​​is fixedly connected to the two side walls of the groove 74, and is rotatably connected to the connecting rod 8 through the first shaft hole 81, so that the connecting rod 8 is rotatably connected to the swivel bearing frame 7 through the third connecting shaft 54.

[0264] Further, the method of fixing the third connecting shaft 54 ​​to the two side walls of the groove 74 of the swivel bearing frame 7 is not limited. For example, it can be a fixed connection method such as welding, clamping, and bolting. Exemplarily, the method of fixing the third connecting shaft 54 ​​to the two side walls of the groove 74 of the swivel bearing frame 7 is clamping fixation.

[0265] It should be further explained that the third connecting shaft 54 ​​is fixedly connected to the side wall of the groove 74 on one side of the swivel bearing frame 7 is only an exemplary description of the fixed connection method between the third connecting shaft 54 ​​and the swivel bearing frame 7; for example, the groove 74 may not be provided on one side of the swivel bearing frame 7, and the third connecting shaft 54 ​​may be directly fixedly connected to the wall surface on one side of the swivel bearing frame 7, and this application does not limit this. In addition, the middle part of the connecting rod 8 may be any part between the two ends of the connecting rod 8 along the length direction, which does not limit the protection scope of this application.

[0266] It should be noted that the other end of the connecting rod 8 and the third fixed bracket 52 rotate and slide through the fourth connecting shaft 55 in any manner. For example, it can be a cam connecting rod 8 structure, a bar hole structure, etc. In one example, the relative rotation and sliding motion between the other end of the connecting rod 8 and the third fixed bracket 52 is achieved through the bar hole structure.

[0267] Specifically, Fig. 27 and Fig.28 As shown, combined with Figure 23 to Figure 24 It is understood that the other end of the connecting rod 8 is provided with a second axial hole 82 , and a protrusion 53 is provided on a side of the third fixing bracket 52 away from the second housing 35 , and the protrusion 53 is provided with a strip hole.

[0268] The fourth connecting shaft 55 passes through the second shaft hole 82 of the connecting rod 8 and the strip hole of the third fixed bracket 52, and is slidably connected to the strip hole along the extension direction of the strip hole, so that the other end of the connecting rod 8 can rotate and be slidably connected to the third fixed bracket 52 through the fourth connecting shaft 55.

[0269] It should be noted that when the second shell 35 switches between the retracted position and the extended position, the second shell 35 rotates relative to the first shell 30 around the first connecting shaft 47, so that a displacement along the radial direction of the fourth connecting shaft 55 is generated between the third fixed bracket 52 fixedly connected to the second shell 35 and the connecting rod 8, and the displacement is compensated by the sliding of the other end of the fourth connecting shaft 55 in the bar hole of the third fixed bracket 52.

[0270] Among them, Fig.29 As shown, combined with Fig.23It is understood that when the second shell 35 is in the retracted position, the fourth connecting shaft 55 is located on the side of the strip hole close to the third fixing bracket 52 , and when the second shell 35 is in the extended position, the fourth connecting shaft 55 is located on the side of the strip hole away from the third fixing bracket 52 .

[0271] The fourth connecting shaft 55 is inserted through the second shaft hole 82 of the connecting rod 8 and the strip hole of the third fixing bracket 52, so that the connecting rod 8 is rotatably and slidably connected with the third fixing bracket 52 through the fourth connecting shaft 55. When the connecting rod 8 rotates with the third fixing bracket 52, the displacement difference in the length direction of the connecting rod 8 generated when the second housing 35 fixedly connected to the third fixing bracket 52 rotates around the first axis O1 is compensated. In addition, the rotation and sliding connection are performed by matching the shaft with the strip hole, and the structure is simple and compact.

[0272] It should be noted that if Fig.23 and Fig.24 As shown, the fourth connecting shaft 55 and the other end of the connecting rod 8 are fixedly connected in any manner, for example, welding, shaft hole interference fit, etc. Exemplarily, the fourth connecting shaft 55 and the other end of the connecting rod 8 are fixedly connected in a shaft hole interference fit manner.

[0273] Furthermore, if Fig.28 As shown, combined with Figures 22a to 24 It is understood that the third fixing bracket 52 and the protrusion 53 can be an integral structure or a split structure. In one example, the third fixing bracket 52 and the protrusion 53 adopt an integral structure. In addition, the fixing connection method of the third fixing bracket 52 and the second shell 35 is not limited. For example, it can be a screw connection, welding, bonding, etc. Exemplarily, the fixing connection method of the third fixing bracket 52 and the second shell 35 adopts a screw fixed connection.

[0274] In one embodiment, if Fig.25b , Fig. 27 and Fig.30 As shown, combined with Figures 22a to 24 It is understood that the outer wall surface of the middle part of the second connecting shaft 6 is provided with a recess 66 which is recessed in the radial direction of the second connecting shaft 6 toward the second axis O2, and the recess 66 is respectively formed with a first cam portion 61 and a second cam portion 64 on both sides of the circumference of the second connecting shaft 6; one end of the connecting rod 8 is set as a cam structure 83.

[0275] In which, when the second connecting shaft 6 is in the first position, the cam structure 83 of the connecting rod 8 abuts against the first cam portion 61 of the second connecting shaft 6, the third shell 10 is in a closed state relative to the first shell 30, and the second shell 35 is in a retracted position relative to the first shell 30, and the fourth connecting shaft 55 is located on the side of the strip hole close to the second shell 35.

[0276] When the second connecting shaft 6 is located at the second position, the portion of the cam structure 83 of the connecting rod 8 away from the third connecting shaft 54 ​​abuts against the first cam portion 61, and the portion of the cam structure 83 of the connecting rod 8 close to the third connecting shaft 54 ​​abuts against the second cam portion 64. At this time, the third housing 10 is in an unfolded state relative to the first housing 30, and the second housing 35 is in an extended position relative to the first housing 30, and the fourth connecting shaft 55 is located on the side of the strip hole away from the second housing 35.

[0277] When the second connecting shaft 6 switches from the first position to the second position, the cam structure 83 of the connecting rod 8 gradually disengages from the first cam portion 61 of the second connecting shaft 6 as the second connecting shaft 6 rotates, and rotates in the recess 66 along the circumference of the second connecting shaft 6 to a position abutting against the second cam portion 64, until it moves to a position abutting against the first cam portion 61 and the second cam portion 64 under the push of the second cam portion 64.

[0278] The cam structure 83 at one end of the connecting rod 8 cooperates with the first cam portion 61 and the second cam portion 64 on both sides of the notch 66 of the second connecting shaft 6, so that the power is transmitted to the connecting rod 8 of the transmission structure 56 when the second connecting shaft 6 rotates. The structure of the power transmission between the second connecting shaft 6 and the connecting rod 8 is simple and compact.

[0279] It should be noted that when the second connecting shaft 6 switches from the first position to the second position, during the process that the cam structure 83 of the connecting rod 8 rotates circumferentially along the second connecting shaft 6 in the recess 66 until it abuts against the second cam portion 64, the connecting rod 8 is not subjected to any force and its relative position with the transfer bracket remains unchanged.

[0280] As the second connecting shaft 6 continues to rotate toward the second position around the second axis O2, the second cam portion 64 abutting against the cam structure 83 of the connecting rod 8 drives the cam structure 83 of the connecting rod 8 to rotate relative to the axis of the third connecting shaft 54, so that the third fixed bracket 52 that rotates and slides with the other end of the connecting rod 8 moves along the first direction Q1 away from the first shell 30, and then the second shell 35 fixedly connected to the third fixed bracket 52 rotates relative to the first shell 30 around the axis of the first connecting shaft 47 until the second connecting shaft 6 rotates to the second position.

[0281] When the second connecting shaft 6 rotates to the second position and there is a tendency for the third shell 10 to continue to rotate away from the first shell 30, the second cam portion 64 continues to drive the cam structure 83 of the connecting rod 8, but the first cam portion 61 and the cam structure 83 of the connecting rod 8 abut to form a self-locking structure, thereby limiting the second connecting shaft 6 from further rotating around the second axis O2.

[0282] like Fig.25b , Fig. 27 and Fig.31 As shown, combined with Figures 22a to 24 It is understood that when the second connecting shaft 6 switches from the second position to the first position, the first cam portion 61 abutting against the cam structure 83 of the connecting rod 8 drives the cam structure 83 of the connecting rod 8 to rotate relative to the axis of the third connecting shaft 54, so that the third fixed bracket 52 that rotates and slides with the other end of the connecting rod 8 moves along the first direction Q1 toward the direction close to the first shell 30, and then the second shell 35 fixedly connected to the third fixed bracket 52 rotates relative to the first shell 30 around the axis of the first connecting shaft 47 until the second shell 35 is in a retracted position relative to the first shell 30.

[0283] As the second connecting shaft 6 continues to rotate around the second axis O2 toward the first position, the first cam portion 61 abutting against the cam structure 83 of the connecting rod 8 does not provide a driving force to drive the cam structure 83 of the connecting rod 8 to rotate relatively around the axis of the third connecting shaft 54 ​​until the second connecting shaft 6 rotates to the first position. At this time, the third housing 10 is in a closed state relative to the first housing 30, and the second connecting shaft 6 will not further rotate around the second axis O2 toward the direction close to the first housing 30.

[0284] It should be noted that during the rotation of the second connecting shaft 6, when the cam structure 83 of the connecting rod 8 abuts against the cam portions of the second connecting shaft 6, the guiding surfaces on the cam portions of the second connecting shaft 6 and the corresponding guided surfaces on the cam structure 83 of the connecting rod 8 serve as abutment surfaces and abut against each other.

[0285] Specifically, the first cam portion 61 has a first outer guide surface 62 and a first inner guide surface 63 which are connected in sequence along the circumferential direction of the second connecting shaft 6 , and the second cam portion 64 has a second inner guide surface 65 . The first inner guide surface 63 and the second inner guide surface 65 are located inside the recess 66 , and the first outer guide surface 62 is located outside the recess 66 .

[0286] The cam structure 83 of the connecting rod 8 has a first guided surface 84 , a second guided surface 85 , and a third guided surface 86 which are connected in sequence. The second guided surface 85 is located at the tip of the cam structure 83 and is located on the end surface of one end of the connecting rod 8 .

[0287] When the second connecting shaft 6 is located at the first position, the first guided surface 84 of the cam structure 83 abuts against the first outer guiding surface 62 of the first cam portion 61 .

[0288] When the second connecting shaft 6 is located at the second position, the second guided surface 85 of the cam structure 83 abuts against the first inner guide surface 63 of the first cam portion 61 , and the third guided surface 86 of the cam structure 83 abuts against the second inner guide surface 65 of the second cam portion 64 .

[0289] It should be further explained that the number of the second shaft assemblies 5 that enable the first shell 30 and the third shell 10 to rotate relative to each other is not limited, and can be one or more; and when there are multiple second shaft assemblies 5, the arrangement of the multiple second shaft assemblies 5 in the second direction Q2 is not limited.

[0290] In one embodiment, if Fig.16 As shown, the first housing 30 of the housing 3 is rotatably connected to the third housing 10 via two second rotating shaft assemblies 5, and the two second rotating shaft assemblies 5 are located at both ends of the first housing 30 along the direction where the second axis O2 is located. The third housing 10 is rotatably connected via the two second rotating shaft assemblies 5 arranged at both ends of the first housing 30, and the rotation process is more stable.

[0291] The two second rotating shaft components 5 can be symmetrically arranged or asymmetrically arranged. In one example, the two second rotating shaft components 5 are symmetrically arranged.

[0292] It should be noted that the second rotating shaft assembly can also be applied to other devices. The application scenario of the second rotating shaft assembly is described in detail below in conjunction with the principle diagram.

[0293] See also Fig.32a and Figure 32b , Fig.32a This is a schematic diagram of the structure of the foldable device in the unfolded state according to an embodiment of the present application. Figure 32b This is a schematic diagram of the structure of the foldable device in a closed state according to an embodiment of the present application.

[0294] like Fig.32a and Figure 32b As shown, the embodiment of the present application also provides a foldable device 100', which includes a first component 10', a second component 30', a third component 35' and a shaft assembly 5'. The shaft assembly 5' adopts the structure described in the above-mentioned second shaft assembly 5. Among them, the third fixed bracket 52, the third connecting shaft 54, the fourth connecting shaft 55, and the second connecting shaft 6 in the above-mentioned second shaft assembly 5 respectively constitute the fixed bracket, the first secondary connecting shaft, the second secondary connecting shaft and the main connecting shaft of the shaft assembly 5'. In addition, the second axis O2 and the third axis O3 mentioned above respectively constitute the main axis and the first secondary axis of the shaft assembly 5'.

[0295] The first component 10' is rotatably connected to the second component 30' through the rotating shaft assembly 5', so that the first component 10' and the second component 30' rotate relative to each other, and the third component 35' is linked to rotate between the first rotation position (corresponding to the retracted position mentioned above) and the second rotation position (corresponding to the extended position mentioned above) relative to the second component 30'. The foldable device 100' does not need to be additionally provided with a driving device for driving the second component 30' and the third component 35' to rotate relative to each other, which reduces the volume of the foldable device 100', reduces the production cost, and improves the user's interactive experience when using the foldable device 100'.

[0296] It should be noted that the rotation structure of the third component 35' relative to the second component 30' is not limited. In one embodiment, the third component 35' is rotationally connected to the second component 30' via an additional rotating shaft assembly 4'. The specific structure of the additional rotating shaft assembly 4' is not limited. In one example, the additional rotating shaft assembly 4' can adopt the structure described in the first rotating shaft assembly 4 above.

[0297] Those skilled in the art will appreciate that the specific type of the foldable device 100 ′ is not limited.

[0298] See also Figure 2a and Figure 2b As shown, in one application scenario, the foldable device 100 ′ may be a foldable electronic device (eg, a laptop computer), the first component 10 ′ is the third shell 10 , the second component 30 ′ is the first shell 30 , and the third component 35 ′ is the second shell 35 .

[0299] In another application scenario, the foldable device 100' can be a Bluetooth headset box, and when the Bluetooth headset box is opened, the Bluetooth headset inside is partially lifted up to facilitate the user to grab it. The first component 10' is the top cover of the Bluetooth headset box, the second component 30' is the side wall of the Bluetooth headset box, and the third component 35' is the bottom wall of the Bluetooth headset box.

[0300] In another application scenario, the foldable device 100' can be a pair of glasses, which are provided with a dust-shielding curtain. When the glasses are stretched out for use, the dust-shielding curtain is correspondingly pulled open; when the glasses are folded, the dust-shielding curtain shields and covers the glasses, so that the glasses can be kept clean when not in use. The first component 10' is the temple, the second component 30' is the frame, and the third component 35' is the dust-shielding curtain.

[0301] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A housing for an electronic device, characterized in that: The housing comprises: A first shell, wherein a hollow portion is provided at the bottom of the first shell; a second shell, the second shell being movably connected to a portion of the first shell located around the hollow portion, so that the second shell can be switched between a retracted position and an extended position relative to the first shell, and the second shell and the first shell together surround a cavity, the cavity being used to accommodate an electronic unit of the electronic device; Wherein, when the second shell is in the retracted position, the second shell is located in the hollow portion; when the second shell is in the extended position, at least a portion of the second shell is located outside the hollow portion and protrudes from the bottom of the first shell in a first direction, and the first direction is parallel to the thickness direction of the shell; Furthermore, the cavity enclosed by the second shell and the first shell when the second shell is in the extended position is larger than the cavity enclosed by the second shell and the first shell when the second shell is in the retracted position.

2. The housing according to claim 1, characterized in that The first side edge of the second shell is rotatably connected to the first side edge of the first shell located around the hollow portion through a first rotating shaft assembly, so that the second shell can rotate around a first axis relative to the first shell between the retracted position and the extended position; wherein the first axis extends along a second direction, and the second direction is perpendicular to the first direction; Furthermore, when the second shell is located at the extended position, a gap is formed between other side edge portions of the second shell except the first side edge portion and a portion of the first shell located around the hollow portion in the first direction.

3. The housing according to claim 2, characterized in that When the second shell is located at the retracted position, an outer edge region of a surface of the second shell facing away from the cavity is flush with a bottom surface of a portion of the first shell located around the hollow portion.

4. The housing according to claim 2, characterized in that The side edges of the second shell other than the first side edge are provided with a retaining wall structure extending along the first direction toward the inside of the cavity; Wherein, when the second shell is located in the retracted position, the retaining wall structure is located on the side of the hollow portion facing the top of the first shell; when the second shell is located in the extended position, the retaining wall structure is located in the gap, and the part of the retaining wall structure away from the second shell is located around the hollow portion, and the retaining wall structure, the second shell and the first shell together surround and form the cavity.

5. The housing according to claim 4, characterized in that A plurality of through holes are provided on the side wall of the retaining wall structure; When the second shell is located at the extended position, the cavity is connected to the outside of the shell through the multiple through holes, and the portion of the retaining wall structure away from the second shell is connected to the portion of the first shell located around the hollow portion.

6. The housing according to claim 2, characterized in that The first rotating shaft assembly includes a first fixed bracket, a second fixed bracket and a first connecting shaft, the first fixed bracket is fixed to the first side edge portion of the first shell located around the hollow portion, the second fixed bracket is fixed to the first side edge portion of the second shell, the first fixed bracket is rotatably connected to the second fixed bracket through the first connecting shaft, so that the second fixed bracket can rotate around the first axis relative to the first fixed bracket, and the second shell can rotate around the first axis relative to the first shell.

7. The housing according to claim 6, wherein: Each of the first fixing bracket and the second fixing bracket comprises a mounting plate and a sleeve connected to one side of the mounting plate, the mounting plate of the first fixing bracket is fixedly and detachably connected to the first shell, and the mounting plate of the second fixing bracket is fixedly and detachably connected to the second shell; The first connecting shaft comprises an anti-rotation shaft segment and a rotating shaft segment which are sequentially connected and relatively fixed along the axis direction thereof; Wherein, the anti-rotation shaft section is sleeved in the sleeve of the first fixed bracket and fixed relative to the sleeve of the first fixed bracket along its circumferential direction, and the rotating shaft section is sleeved in and rotatably connected to the sleeve of the second fixed bracket around the first axis, so that the first fixed bracket is rotatably connected to the second fixed bracket through the first connecting shaft; or, The rotating shaft section is sleeved in the sleeve of the first fixed bracket and can be rotatably connected around the first axis. The anti-rotation shaft section is sleeved in the sleeve of the second fixed bracket and is fixed relative to the sleeve of the second fixed bracket along its circumferential direction, so that the first fixed bracket is rotatably connected to the second fixed bracket through the first connecting shaft.

8. The housing according to claim 2, wherein: The first side edge of the second shell is rotatably connected to the first side edge of the first shell located around the hollow portion through two first rotating shaft assemblies, and the two first rotating shaft assemblies are spaced apart in the second direction.

9. The housing according to claim 1, wherein: The first shell includes a first partial shell and a second partial shell. The first partial shell is configured as a groove-shaped structure and includes a top plate and a side wall connected to the outer periphery of the top plate and protruding from the top plate in the first direction. The second partial shell is configured as an annular frame structure. The inner periphery of the second partial shell surrounds the hollow portion, and the outer periphery of the second partial shell is fixedly connected to an end of the side wall of the first partial shell away from the top plate.

10. The housing according to any one of claims 1 to 9, characterized in that: The electronic device is a notebook computer, which includes a system end part. The shell is used as a shell of the system end part. The top of the first shell is used to install the keyboard of the system end part, and a foot pad is provided on the bottom surface of the second shell facing away from the cavity.

11. A housing assembly, characterized in that: It includes a shell as described in any one of claims 1-10, and also includes a second hinge assembly, which is arranged on the first shell of the shell and is used to connect to the third shell of the electronic device so that the first shell of the shell can rotate around a second axis relative to the third shell through the second hinge assembly.

12. The housing assembly according to claim 11, characterized in that: When the first side edge portion of the second shell is rotatably connected to the first side edge portion of the first shell located around the hollow portion through the first rotating shaft assembly, so that the second shell can rotate around the first axis relative to the first shell between the retracted position and the extended position, the second rotating shaft assembly includes: A rotating shaft structure, the rotating shaft structure comprises a rotating shaft bearing frame and a second connecting shaft, the rotating shaft bearing frame is fixedly connected to a side of the first housing away from the first rotating shaft assembly; the second connecting shaft is rotatably connected to the rotating shaft bearing frame around the second axis, so that the second connecting shaft can switch between a first position and a second position relative to the rotating shaft bearing frame, and the second connecting shaft is used to be fixedly connected to the third housing, so that the first housing can rotate relative to the third housing around the second axis through the rotating shaft structure; wherein the second axis is parallel to the first axis; a transmission structure connected between the second connecting shaft and a side of the second housing away from the first side edge portion, and in response to the rotation of the second connecting shaft relative to the swivel bearing frame, the transmission structure can drive the second housing to rotate around the first axis relative to the first housing between the retracted position and the extended position; Wherein, when the second connecting shaft is located at the first position relative to the rotating bearing frame, the third shell is in a closed state relative to the first shell, and the second shell is in the retracted position relative to the first shell; when the second connecting shaft is located at the second position relative to the rotating bearing frame, the third shell is in an expanded state relative to the first shell, and the second shell is in the extended position relative to the first shell; When the second connecting shaft switches from the first position to the second position, the transmission structure, driven by the second connecting shaft, links the second housing to rotate from the retracted position to the extended position relative to the first housing; When the second connecting shaft switches from the second position to the first position, the transmission structure, driven by the second connecting shaft, links the second housing to rotate from the extended position to the retracted position relative to the first housing.

13. The housing assembly according to claim 12, characterized in that: The transmission structure comprises: A connecting rod, wherein the connecting rod is rotatably connected to the rotating bearing frame via a third connecting shaft, so that the connecting rod can rotate relative to the rotating bearing frame around a third axis, and one end of the connecting rod cooperates with the second connecting shaft, so that the connecting rod is driven to rotate relative to the rotating bearing frame through the rotation of the second connecting shaft; wherein the third axis is parallel to the second axis; a third fixed bracket, the other end of the connecting rod being rotatably and slidably connected to the third fixed bracket via a fourth connecting shaft, and the third fixed bracket being fixedly connected to a side of the second shell away from the first side edge portion; In response to the rotation of the second connecting shaft relative to the swivel bearing frame, the transmission structure can drive the second housing to rotate around the first axis relative to the first housing between the retracted position and the extended position.

14. The housing assembly according to claim 13, characterized in that: A sleeve is provided on one side of the swivel bearing frame away from the first side edge of the second shell, a notch is provided on the wall surface of the sleeve, and one end of the second connecting shaft is sleeved in the sleeve and can be rotatably connected to the swivel bearing frame around the second axis; An extension platform is provided on one side of the swivel bearing frame close to the connecting rod, and a groove extending toward the top surface of the extension platform is provided on the bottom surface of the extension platform; The connecting rod is inserted into the groove of the extension platform along its length direction, and a first axial hole is opened in the middle of the connecting rod along its length direction. The third connecting shaft is inserted into the two side walls of the groove and the first axial hole of the connecting rod along its axial direction, so that the connecting rod is rotatably connected to the rotating bearing frame through the third connecting shaft and the extension platform.

15. The housing assembly according to claim 13, wherein: The outer wall surface of the middle part of the second connecting shaft is provided with a notch which is recessed in the radial direction of the second connecting shaft toward the second axis, and the notch is respectively formed with a first cam portion and a second cam portion on both sides of the circumferential direction of the second connecting shaft; one end of the connecting rod is provided with a cam structure; Wherein, when the second connecting shaft is located at the first position, the cam structure of the connecting rod abuts against the first cam portion of the second connecting shaft; When the second connecting shaft is located at the second position, a portion of the cam structure of the connecting rod away from the third connecting shaft abuts against the first cam portion, and a portion of the cam structure of the connecting rod close to the third connecting shaft abuts against the second cam portion; When the second connecting shaft switches from the first position to the second position, the cam structure of the connecting rod gradually disengages from the first cam portion of the second connecting shaft as the second connecting shaft rotates, and rotates in the recess along the circumference of the second connecting shaft to a position abutting against the second cam portion, until it moves to a position abutting against both the first cam portion and the second cam portion under the pushing action of the second cam portion.

16. The housing assembly according to claim 15, characterized in that: The first cam portion has a first outer guide surface and a first inner guide surface which are connected in sequence along the circumferential direction of the second connecting shaft, the second cam portion has a second inner guide surface, the first inner guide surface and the second inner guide surface are located in the recess, and the first outer guide surface is located outside the recess; The cam structure of the connecting rod has a first guided surface, a second guided surface, and a third guided surface which are connected in sequence, wherein the second guided surface is located at the tip of the cam structure and is located on the end surface of one end of the connecting rod; Wherein, when the second connecting shaft is located at the first position, the first guided surface of the cam structure abuts against the first outer guiding surface of the first cam portion; When the second connecting shaft is located at the second position, the second guided surface of the cam structure abuts against the first inner guiding surface of the first cam portion, and the third guided surface of the cam structure abuts against the second inner guiding surface of the second cam portion.

17. The housing assembly according to claim 13, characterized in that: A second axial hole is formed at the other end of the connecting rod, and a protrusion is formed at a side of the third fixing bracket away from the second shell, and a strip-shaped hole is formed on the protrusion; The fourth connecting shaft is passed through the second shaft hole of the connecting rod and the strip hole of the third fixing bracket, and is slidably connected to the strip hole along the extension direction of the strip hole, so that the other end of the connecting rod rotates through the fourth connecting shaft and is slidably connected to the third fixing bracket; Wherein, when the second shell is in the retracted position, the fourth connecting shaft is located on a side of the strip hole close to the third fixing bracket; when the second shell is in the extended position, the fourth connecting shaft is located on a side of the strip hole away from the third fixing bracket.

18. The housing assembly according to claim 12, characterized in that: The third shell is provided with an extension portion on one side close to the shell, and a mounting hole is provided in the extension portion. The other end of the second connecting shaft is sleeved in the mounting hole of the extension portion of the third shell and fixed relative to the mounting hole of the third shell along its circumferential direction.

19. The housing assembly according to any one of claims 11 to 18, characterized in that: The first shell of the housing is rotatably connected to the third shell via two second rotating shaft assemblies, and the two second rotating shaft assemblies are located at two ends of the first shell along the direction where the second axis is located.

20. The housing assembly according to any one of claims 11 to 18, characterized in that: When the first housing includes a first partial housing and a second partial housing, the second partial housing of the first housing is rotatably connected to the third housing via the second rotating shaft assembly; When the electronic device is a notebook computer, and the notebook computer includes a system end portion, the notebook computer also includes a display end portion, and the third housing is a housing of the display end portion.

21. A folding device, characterized in that: The invention comprises the third shell and the shell assembly as described in any one of claims 11-20.

22. An electronic device, characterized in that: It comprises the housing as claimed in any one of claims 1 to 10 or the folding device as claimed in claim 21.

23. A rotating shaft assembly, characterized in that: It includes: A rotating shaft structure, the rotating shaft structure comprising a main connecting shaft and a rotating bearing frame, the main connecting shaft is used to be fixedly connected to one side of a first component, the rotating bearing frame is used to be fixedly connected to a side of a second component close to the first component, the main connecting shaft is rotatably connected to the rotating bearing frame around a main axis, so that the main connecting shaft can be switched between a first position and a second position relative to the rotating bearing frame, and the first component can be rotated relative to the second component around the main axis through the rotating shaft structure; A transmission structure, one end of which is connected to the main connecting shaft, and the other end is used to connect to the third component. In response to the rotation of the main connecting shaft relative to the rotating bearing frame, the transmission structure can drive the third component to rotate between a first rotation position and a second rotation position relative to the second component.

24. The shaft assembly according to claim 23, wherein: The transmission structure comprises: A connecting rod, the connecting rod is rotatably connected to the rotating bearing frame through a first secondary connecting shaft, so that the connecting rod can rotate relative to the rotating bearing frame around a first secondary axis, and one end of the connecting rod cooperates with the main connecting shaft to drive the connecting rod to rotate relative to the rotating bearing frame through the rotation of the main connecting shaft; wherein the first secondary axis is parallel to the main axis; A fixed bracket, the other end of the connecting rod is rotatably and slidably connected to the fixed bracket through a second secondary connecting shaft, and the fixed bracket is fixedly connected to one side of the third component close to the main connecting shaft.

25. The shaft assembly according to claim 24, characterized in that: A sleeve is provided on one side of the rotating bearing frame close to the first component, a notch is provided on the wall surface of the sleeve, and one end of the main connecting shaft is sleeved in the sleeve of the rotating bearing frame and can be rotatably connected around the main axis; An extension platform is provided on one side of the swivel bearing frame close to the connecting rod, and a groove extending toward the top surface of the extension platform is provided on the bottom surface of the extension platform; The connecting rod is penetrated through the groove of the extension platform along its length direction, and a first axial hole is opened in the middle of the connecting rod along its length direction. The first secondary connecting shaft is penetrated through the two side walls of the groove and the first axial hole of the connecting rod along its axial direction, so that the connecting rod is rotatably connected to the rotating bearing frame through the first secondary connecting shaft and the extension platform.

26. The shaft assembly according to claim 24, wherein: The outer wall surface of the middle part of the main connecting shaft is provided with a notch which is recessed in the radial direction of the main connecting shaft toward the direction of the main axis, and the notch is respectively formed with a first cam portion and a second cam portion on both sides of the circumferential direction of the main connecting shaft; one end of the connecting rod is provided with a cam structure; Wherein, when the main connecting shaft is located at the first position, the cam structure of the connecting rod abuts against the first cam portion of the main connecting shaft; When the main connecting shaft is located at the second position, the portion of the cam structure of the connecting rod away from the first secondary connecting shaft abuts against the first cam portion, and the portion of the cam structure of the connecting rod close to the first secondary connecting shaft abuts against the second cam portion; When the main connecting shaft switches from the first position to the second position, the cam structure of the connecting rod gradually disengages from the first cam portion of the main connecting shaft as the main connecting shaft rotates, and rotates in the recess along the circumference of the main connecting shaft to abut against the second cam portion, until it moves to abut against both the first cam portion and the second cam portion under the push of the second cam portion.

27. The shaft assembly according to claim 26, wherein: The first cam portion has a first outer guide surface and a first inner guide surface which are connected in sequence along the circumferential direction of the main connecting shaft, the second cam portion has a second inner guide surface, the first inner guide surface and the second inner guide surface are located in the recess, and the first outer guide surface is located outside the recess; The cam structure of the connecting rod has a first guided surface, a second guided surface, and a third guided surface which are connected in sequence, wherein the second guided surface is located at the tip of the cam structure and is located on the end surface of one end of the connecting rod; Wherein, when the main connecting shaft is located at the first position, the first guided surface of the cam structure abuts against the first outer guiding surface of the first cam portion; When the main connecting shaft is located at the second position, the second guided surface of the cam structure abuts against the first inner guiding surface of the first cam portion, and the third guided surface of the cam structure abuts against the second inner guiding surface of the second cam portion.

28. The shaft assembly according to claim 24, wherein: A second shaft hole is formed at the other end of the connecting rod, and a protrusion is formed on one side of the fixing bracket close to the main connecting shaft, and a strip hole is formed on the protrusion; The second secondary connecting shaft is passed through the second shaft hole of the connecting rod and the strip hole of the fixing bracket, and is slidably connected to the strip hole along the extension direction of the strip hole, so that the other end of the connecting rod is rotated through the second secondary connecting shaft and slidably connected to the fixing bracket; Wherein, when the third component is in the first rotation position, the second secondary connecting shaft is located on the side of the strip hole close to the fixed bracket; when the third component is in the second rotation position, the second secondary connecting shaft is located on the side of the strip hole away from the fixed bracket.

29. A foldable device, characterized in that: It comprises the shaft assembly as described in any one of claims 23-28, and the first component, the second component and the third component.

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