Hinge assembly and electronic equipment

Abstract

The invention provides a hinge assembly and electronic equipment, and relates to the technical field of electronic equipment. The problems that an existing hinge assembly is complex in structure, large in size and not beneficial to lightening and thinning of electronic equipment are solved. The hinge assembly comprises a base, a rotating seat, a rotating assembly and a fixed seat. The base is fixedly connected with the first part. The rotating base is used for being fixedly connected with a second component. The rotating assembly comprises a rotating shaft and a through hole, one of the rotating shaft and the through hole is arranged on the base, the other one of the rotating shaft and the through hole is arranged on the rotating seat, and the rotating shaft is inserted into the through hole so that the base can be rotationally connected with the rotating seat. A shaft hole is formed in the fixing base, the end of the rotating shaft is inserted into the shaft hole, and the rotating shaft is in interference fit with the shaft hole.

Description

[0001] This application is a divisional application. The application number of the original application is 202311002260.8, and the original application date is August 9, 2023. The entire contents of the original application are incorporated into this application by reference. Technical Field

[0002] The present application relates to the technical field of electronic equipment, and in particular to a hinge assembly and an electronic equipment. Background Art

[0003] Foldable electronic devices (eg, laptop computers) are more popular among users due to their portability due to their foldability.

[0004] The notebook computer comprises a display part and a keyboard part, and the display part and the keyboard part are rotatably connected via a hinge assembly so that the display part can rotate relative to the keyboard part, thereby realizing folding.

[0005] However, the hinge assembly of the existing notebook computer has many components and a complex structure, resulting in a large overall volume, which is not conducive to the thinness and lightness of the electronic device. Summary of the invention

[0006] The embodiments of the present application provide a hinge assembly and an electronic device, which are used to solve the problem that the existing hinge assembly has a complex structure and a large volume, which is not conducive to the thinness and lightness of the electronic device.

[0007] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions:

[0008] In a first aspect, a hinge assembly is provided, which includes a base, a rotating seat, a rotating assembly, and a fixed seat. The base is used to be fixedly connected to the first part. The rotating seat is used to be fixedly connected to the second part. The rotating assembly includes a rotating shaft and a through hole, one of the rotating shaft and the through hole is arranged on the base, and the other of the rotating shaft and the through hole is arranged on the rotating seat, and the rotating shaft is inserted into the through hole so that the base and the rotating seat are rotatably connected. The fixed seat is provided with an axial hole, and the end of the rotating shaft is inserted into the axial hole, and the rotating shaft and the axial hole are interference fit.

[0009] The hinge assembly provided in the first aspect of the present application has a base for fixedly connecting with a first component, for example, the keyboard part of a laptop computer. The rotating seat is used for fixedly connecting with a second component, for example, the display part of a laptop computer. In addition, the rotating seat and the base are rotatably connected via a rotating assembly, that is, a rotating shaft and an axial hole, so that the display part and the keyboard part of the laptop computer can rotate relative to each other. In addition, a fixed seat is provided at the end of the rotating shaft, and the fixed seat is fixedly connected to the base, and an axial hole is provided on the fixed seat. The rotating shaft and the axial hole are interference fit, that is, the friction force generated when the two rotate relative to each other can form a damping force, and the overall number of parts is relatively small. Therefore, the number of overall parts of the hinge assembly is small, which is conducive to reducing the overall volume of the hinge assembly, thereby facilitating the thinness of electronic equipment.

[0010] Furthermore, during the installation process, the rotating seat can be first installed on the base, that is, the two ends of the rotating shaft are respectively inserted into the through holes on the base to realize the rotating connection between the rotating seat and the base. Next, the fixed seat is installed at the end of the rotating shaft, and the shaft hole on the fixed seat is tightly matched with the rotating shaft, that is, there is an interference fit between the two, and the fixed seat is fixedly connected to the base. In this way, it is helpful to reduce the assembly difficulty of the hinge assembly, so as to reduce the risk of failure of the shaft hole and the rotating shaft to tightly fit during the installation process.

[0011] In a possible implementation of the first aspect of the present application, the axial hole extends radially and penetrates the surface of the fixing seat to form a notch. This can help reduce the weight of the fixing seat, thereby helping to reduce the weight of the hinge assembly, and thus helping to make the electronic device lighter and thinner.

[0012] In a possible implementation of the first aspect of the present application, along the vertical direction, the highest point of the fixing seat is lower than the highest point of the rotating shaft. Under this structure, while achieving a tight fit between the rotating shaft and the shaft hole with an interference fit between the two, the size of the hinge assembly along the vertical direction (i.e., the thickness direction of the keyboard part) can also be reduced, thereby facilitating the thinness of the electronic device.

[0013] In a possible implementation of the first aspect of the present application, two fixing seats are provided, and the two fixing seats are provided on both sides of the base along the axial direction of the rotating shaft, and the two ends of the rotating shaft are respectively inserted into the shaft holes on the two fixing seats. This is conducive to the force balance of the hinge assembly, thereby improving the reliability of the overall structure.

[0014] In a possible implementation of the first aspect of the present application, the through hole extends in the radial direction of the rotating shaft and penetrates the side wall of the base. In this way, when the rotating base is installed on the base, it is only necessary to insert the rotating shaft on the rotating base into the through hole in the radial direction of the through hole to achieve the rotating connection between the rotating base and the base, so that the installation is simpler.

[0015] In a possible implementation of the first aspect of the present application, the base includes a first part and two second parts, the two second parts are respectively arranged at the two ends of the first part along the first direction, the second part is fixedly connected to the first part, and a through hole is opened on the second part; the first direction is parallel to the axis of the rotating shaft. The rotating shaft is fixed on the rotating seat, and the two ends of the rotating shaft are respectively inserted into the through holes on the two second parts. In this way, the space enclosed by the first part and the second part of the base can accommodate the part of the rotating seat where the rotating shaft is arranged, which is conducive to improving the integration of the hinge assembly composed of the base and the rotating seat, that is, it is conducive to further reducing the overall volume of the hinge assembly.

[0016] In a possible implementation of the first aspect of the present application, the base further includes a third part, and the third part is fixedly disposed on the surfaces of the two second parts that are opposite to each other, and the third part is used to be fixedly connected to the first component. In this way, the third part is disposed on both sides of the two second parts symmetrically, so that when the base is fixed to the first component, the overall force is more balanced, which is conducive to improving the connection reliability between the base and the first component.

[0017] In a possible implementation of the first aspect of the present application, the rotating seat includes an arc-shaped portion and a first connecting portion, the axis of the arc-shaped portion is parallel to the axis of the rotating shaft, and the first connecting portion extends in a direction close to the axis of the arc-shaped portion; along the circumference of the arc-shaped portion, the first end of the arc-shaped portion is fixedly connected to the first connecting portion, the rotating shaft is fixed on the first connecting portion, and the second end of the arc-shaped portion is used to be fixedly connected to the second component. Under this structure, during the rotation process of the arc-shaped portion of the rotating seat, since the surface of the arc-shaped portion is a circular arc surface structure, the distance between the arc-shaped portion and the adjacent structural member can be kept unchanged, thereby reducing the avoidance space set in the first component for avoiding the rotating seat.

[0018] In a possible implementation of the first aspect of the present application, the axis of the arc portion coincides with the axis of the rotating shaft. In this way, the arc portion can rotate around its own axis, and during the rotation of the arc portion, the distance between the arc portion and the first part of the base can remain unchanged, thereby reducing the distance between the arc portion and the first part of the base, thereby improving the integration of the base and the rotating seat, which is conducive to further reducing the volume of the hinge assembly.

[0019] In a possible implementation of the first aspect of the present application, the rotating seat further includes a second connecting portion, the second connecting portion is fixed to the second end of the arc-shaped portion, and the second connecting portion is used to be fixedly connected to the second component. In this structure, the second connecting portion can extend in a direction away from the axis of the arc-shaped portion and be fixedly connected to the second component, thereby realizing a rotational connection between the second component and the first component.

[0020] In a possible implementation of the first aspect of the present application, a relief hole is provided on the first connection portion. In this structure, the relief hole can avoid the flexible connector used to achieve electrical connection between the first component and the second component, so as to avoid excessive bending of the flexible connector and reduce the risk of damage to the flexible connector due to excessive bending.

[0021] In a possible implementation of the first aspect of the present application, the rotating seat also includes an arc plate, the arc plate is arranged on the inner side of the arc portion, the arc plate is fixedly connected to the arc portion, and there is a spacing space between the arc plate and the inner wall of the arc portion, the spacing space extends from the first end of the arc portion to the second end of the arc portion; the end of the spacing space close to the first end of the arc portion is opposite to the avoidance hole, and the spacing space is connected to the avoidance hole. In this way, the above-mentioned flexible connector can be arranged in the spacing space, so that while realizing the electrical connection between the first component and the second component, it can also effectively protect the flexible connector.

[0022] In a possible implementation of the first aspect of the present application, the shaft hole is opened on the base, the rotating shaft is arranged on the rotating seat, and the rotating shaft and the rotating seat are integrally formed. Under this structure, it is beneficial to improve the connection strength between the rotating seat and the rotating shaft.

[0023] In a possible implementation of the first aspect of the present application, a positioning shaft and a positioning hole are provided between the base and the fixing seat, one of the positioning shaft and the positioning hole is provided on the base, the other of the positioning shaft and the positioning hole is provided on the fixing seat, and the positioning shaft is inserted into the positioning hole. Under this structure, the base and the fixing seat can be pre-positioned to improve installation accuracy and reduce installation difficulty.

[0024] In a possible implementation of the first aspect of the present application, multiple sets of positioning shafts and positioning holes are provided between the base and the fixing seat. In this way, the multiple sets of positioning shafts and positioning holes are plugged in and matched to prevent the base and the fixing seat from moving relative to each other in a plane perpendicular to the positioning shafts, thereby facilitating further improvement of installation accuracy.

[0025] In a possible implementation of the first aspect of the present application, at least one of the outer wall of the rotating shaft facing the shaft hole and the inner wall of the shaft hole facing the rotating shaft is provided with a groove, and the groove is used to add lubricating material. This helps to make the rotating shaft and the shaft hole rotate more smoothly relative to each other, which helps to improve the user experience.

[0026] In a second aspect, an electronic device is provided, the electronic device comprising a keyboard part, a display part and a hinge assembly. The hinge assembly is a hinge assembly as described in any of the above technical solutions, the base of the hinge assembly is fixedly connected to the keyboard part, and the rotating base of the hinge assembly is fixedly connected to the display part.

[0027] The electronic device provided in the second aspect of the present application, because it includes the hinge assembly described in any of the above technical solutions, can solve the same technical problems and achieve the same technical effects.

[0028] In a possible implementation of the second aspect of the present application, the keyboard portion includes a first area and a second area, and the thickness of the first area is smaller than the thickness of the second area. When the display portion and the keyboard portion are interlocked, the display portion and the first area are stacked. Under this structure, it is beneficial to reduce the overall thickness of the electronic device, that is, by accommodating some devices in the second area, the thickness of the first area is reduced.

[0029] In a possible implementation of the second aspect of the present application, the sum of the thickness of the display portion and the thickness of the first region is equal to the thickness of the second region. In this way, when the electronic device is in a folded state, the surface of the display portion away from the first region can be flush with the second region, which is beneficial to the overall appearance.

[0030] In a possible implementation of the second aspect of the present application, an interface module is disposed in the second region, and a socket of the interface module is disposed on a surface of the second region away from the first region. In this structure, the number of devices disposed in the first region can be reduced, thereby reducing the thickness of the first region, which is conducive to making the electronic device thinner and lighter.

[0031] In a possible implementation of the second aspect of the present application, a plurality of hinge assemblies are provided, and the plurality of hinge assemblies are spaced apart along the rotation axis between the display portion and the keyboard portion. In this structure, the display portion and the keyboard portion have a plurality of connection points through the hinge assemblies, which is conducive to improving the reliability of the rotation connection between the display portion and the keyboard portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A structural diagram of an electronic device (in an open state) provided in an embodiment of the present application;

[0033] Figure 2 A structural diagram of an electronic device (folded state) provided in an embodiment of the present application;

[0034] Figure 3 A partial structural diagram of an electronic device in a folded state provided by an embodiment of the present application;

[0035] Figure 4 An exploded diagram of an electronic device provided in an embodiment of the present application;

[0036] Figure 5 A structural diagram of a hinge assembly provided in an embodiment of the present application;

[0037] Figure 6 for Figure 5An exploded view of the hinge assembly is provided;

[0038] Figure 7 for Figure 5 A structural diagram of the provided hinge assembly in another state;

[0039] Figure 8 A structural diagram of another rotating shaft provided in an embodiment of the present application;

[0040] Fig. 9 for Figure 8 A partial cross-sectional structural diagram of the shaft and shaft hole provided;

[0041] Fig.10 A partial structural diagram of an electronic device provided in an embodiment of the present application when in a folded state;

[0042] Fig.11 A partial structural diagram of an electronic device provided in an embodiment of the present application when in an open state;

[0043] Fig.12 An exploded view of another base in a hinge assembly provided in an embodiment of the present application;

[0044] Fig.13 for Fig.12 A structural diagram of the hinge assembly provided;

[0045] Fig.14 Another electronic device (including Fig.13 A partial structural diagram of a hinge assembly provided;

[0046] Fig.15 for Fig.14 A magnified view of the structure of region A;

[0047] Fig.16 An enlarged view of a partial structure of another electronic device provided in an embodiment of the present application;

[0048] Fig.17 An exploded view of another base in the hinge assembly provided in an embodiment of the present application;

[0049] Fig.18 An exploded view of another base in the hinge assembly provided in an embodiment of the present application;

[0050] Fig.19 Another electronic device provided in an embodiment of the present application (including Fig.18 A structural diagram of a hinge assembly provided;

[0051] Fig. 20 A structural diagram of a rotating seat in a hinge assembly provided in an embodiment of the present application;

[0052] Fig.21 for Fig. 20 Provide a cross-sectional structural diagram of the rotating seat and the base after assembly;

[0053] Fig. 22 for Fig. 20 The provided partial structural assembly drawings of the hinge assembly, display part and keyboard part;

[0054] Fig.23 An exploded view of another hinge assembly provided for an embodiment of the application;

[0055] Fig.24 for Fig.23 A cross-sectional structural diagram of the provided hinge assembly;

[0056] Fig.25 An exploded view of another rotating seat provided in an embodiment of the present application.

[0057] : Figure numerals: 01-electronic device; 10-display part; 11-upper cover; 12-display screen; 20-keyboard part; 20a-first area; 20b-second area; 21-keyboard; 22-upper shell; 23-bottom shell; 23a-stud; 23b-threaded hole; 30-hinge assembly; 100-base; 110-first part; 120-second part; 121-positioning axis; 130-third part; 131-mounting hole; 200-rotating seat; 210-arc-shaped part; 211-arc-shaped groove; 220-first connecting part; 221-avoidance hole; 230-second connecting part; 240-arc-shaped plate; 250-partition space; 300-rotating assembly; 310-rotating shaft; 311-groove; 320-through hole; 400-fixed seat; 410-axis hole; 420-positioning hole. DETAILED DESCRIPTION

[0058] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0059] In the following, the terms "first", "second", etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features.

[0060] In addition, in the present application, directional terms such as "upper" and "lower" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they can change accordingly according to the changes in the orientation of the components in the drawings.

[0061] In the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0062] The embodiment of the present application provides an electronic device, which is a type of terminal device that can be folded. For example, the electronic device can be a laptop computer. The following examples are all given by taking the electronic device as a laptop computer as an example.

[0063] Specifically, see Figure 1 and Figure 2 , Figure 1 This is a structural diagram of an electronic device 01 (opened state) provided in an embodiment of the present application. Figure 2 The electronic device 01 (folded state) provided in the embodiment of the present application may include a display portion 10 , a keyboard portion 20 and a hinge assembly 30 .

[0064] For the convenience of the following description, an XYZ coordinate system is established, and the width direction of the electronic device 01 is defined as the X-axis direction, the length direction of the electronic device 01 is defined as the Y-axis direction, and the thickness direction of the electronic device 01 is defined as the Z-axis direction. It is understood that the coordinate system of the electronic device 01 can be flexibly set according to actual needs, and this application only gives an example, which cannot be considered as a special limitation of this application.

[0065] Understandably, Figure 1 and Figure 2 Only some components of the electronic device 01 are schematically shown, and the actual shapes, sizes, positions and structures of these components are not subject to the present invention. Figure 1 and Figure 2 restrictions.

[0066] The display part 10 is used to display images, videos, etc. The display part 10 may include an upper cover 11 and a display screen 12. The display screen 12 is fixed to the upper cover 11. For example, the display screen 12 may be fixed to the upper cover 11 by bonding, snapping, etc. The display screen 12 is disposed on a side of the upper cover 11 close to the keyboard part 20. The upper cover 11 may be made of metal material or plastic material. Therefore, the present application does not specifically limit the material of the upper cover 11.

[0067] In addition, the display screen 12 may be a flexible display screen or a rigid display screen. For example, the display screen 12 may be an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode or an active-matrix organic light-emitting diode (AMOLED) display screen, a mini light-emitting diode (MID) display screen, a micro organic light-emitting diode (MID) display screen, a micro organic light-emitting diode (MID) display screen, a quantum dot light-emitting diode (QLED) display screen, or a liquid crystal display (LCD).

[0068] The keyboard part 20 is used to edit or perform other operations on the content displayed on the display screen 12. The keyboard part 20 may include a keyboard 21, an upper shell 22 and a bottom shell 23. The keyboard 21 is fixed to the upper shell 22. The upper shell 22 and the bottom shell 23 are fixedly connected. For example, the upper shell 22 and the bottom shell 23 may be fixed by bonding, clamping, threading, welding, etc. A receiving space is formed between the upper shell 22 and the bottom shell 23. The receiving space is used to set electronic devices such as a motherboard, a CPU (central processing unit), a graphics card, a memory, and a fan.

[0069] In addition, the keyboard 21 is electrically connected to the mainboard, and the display screen 12 is electrically connected to the mainboard via a flexible connector (not shown), such as a FPC (Flexible Printed Circuit) board, so that the content displayed on the display screen 12 can be edited via the keyboard 21.

[0070] The hinge assembly 30 is used to connect the display part 10 and the keyboard part 20 so that the two can rotate relative to each other, thereby realizing the conversion of the electronic device 01 between the folded state and the opened state. Figure 2In the state shown in the figure, the display part 10 and the keyboard part 20 are buckled together, the display screen 12 and the keyboard 21 are arranged opposite to each other, and the display screen 12 and the keyboard 21 are both located between the upper cover 11 and the bottom shell 23, so that the display screen 12 and the keyboard 21 can be effectively protected. In this state, the electronic device 01 forms a nearly plate-like structure, which is easy to carry.

[0071] When the electronic device 01 is turned on (such as Figure 1 The display portion 10 is rotated in a direction away from the keyboard portion 20 to form an angle between the display portion 10 and the keyboard portion 20, so that the display screen 12 and the keyboard 21 are separated, and the user can view the image displayed on the display screen 12 and perform operations through the keyboard 21.

[0072] In order to enhance the user experience, the hinge assembly 30 can also provide damping force so that the display portion 10 can be maintained at different positions when the electronic device 01 is opened, thereby being able to adapt to different usage scenarios to enhance the user experience.

[0073] In addition, in order to make the electronic device 01 thinner and lighter. Figure 3 and Figure 4 , Figure 3 This is a partial structural diagram of an electronic device 01 provided in an embodiment of the present application in a folded state. Figure 4 The exploded view of the electronic device 01 provided in the embodiment of the present application. In the electronic device 01, the keyboard part 20 may include a first area 20a and a second area 20b. The thickness dimension D1 of the first area 20a is smaller than the thickness dimension D2 of the second area 20b, and the keyboard 21 is located in the first area 20a.

[0074] Furthermore, when the electronic device 01 is in the folded state, the display portion 10 and the first area 20a of the keyboard portion 20 are stacked, that is, the display portion 10 only covers the first area 20a of the keyboard portion 20, and the sum of the thickness of the display portion 10 and the first area 20a can be equal to the thickness of the second area 20b, that is, the thickness D3 of the display portion 10 plus the thickness D1 of the first area 20a is equal to the thickness D2 of the second area 20b. In this structure, the hinge assembly 30 can be arranged at the position where the first area 20a of the keyboard portion 20 and the second area 20b are connected.

[0075] In this way, the interface modules (for example, USB interface module and Type-C interface module, etc., not shown in the figure) set on the keyboard part 20 can be set in the second area 20b, and the socket of the interface module is set on the back side of the keyboard part 20 (that is, the second area 20b is away from the surface of the first area 20a), so as to reduce the thickness of the first area 20a, which is conducive to the lightweight of the electronic device 01.

[0076] However, the hinge assembly 30 provided in the related art generally has a complex structure, resulting in a large overall volume of the hinge assembly 30 , which is not conducive to making the electronic device 01 thin and light.

[0077] In order to solve the above problems, the embodiment of the present application provides a hinge assembly 30, which is applied to the above electronic device 01. The hinge assembly 30 can be provided in one or more forms. For example, the plurality of hinge assemblies 30 can be distributed along the rotation axis between the display portion 10 and the keyboard portion 20, so that there are multiple connection points between the display portion 10 and the keyboard portion 20, which is beneficial to the overall force balance. In this embodiment, if Figure 1 As shown, two hinge assemblies 30 are provided between the display portion 10 and the keyboard portion 20 for illustration.

[0078] See also Figure 5 , Figure 6 and Figure 7 , Figure 5 A structural diagram of a hinge assembly 30 provided in an embodiment of the present application is shown in FIG. Figure 6 for Figure 5 An exploded view of the hinge assembly 30 is provided, Figure 7 for Figure 5 The structure diagram of the hinge assembly 30 in another state is provided. Figure 5 The hinge assembly 30 shown is the electronic device 01 in a folded state (eg Figure 2 As shown in the figure, Figure 7 The hinge assembly 30 is for the electronic device 01 to be in an open state (eg Figure 1 The hinge assembly 30 may include a base 100, a rotating base 200 and a rotating assembly 300.

[0079] The base 100 is used for Figure 1 The keyboard portion 20 shown forms a first component that is fixedly connected. The rotating base 200 is used for the above Figure 1The second part formed by the display part 10 shown is fixedly connected. The rotating assembly 300 may include a rotating shaft 310 and a through hole 320, one of the rotating shaft 310 and the through hole 320 is arranged on the base 100, and the other of the rotating shaft 310 and the through hole 320 is arranged on the rotating seat 200; the rotating shaft 310 is inserted into the through hole, so that the base 100 is rotatably connected with the rotating seat 200, that is, the display part 10 and the keyboard part 20 are rotatably connected.

[0080] In some embodiments, the rotating shaft 310 may be disposed on the rotating base 200, and the through hole 320 may be opened on the base 100. For example, please continue to refer to Figure 5 , Figure 6 and Figure 7 The base 100 may include a first portion 110 and two second portions 120, the two second portions 120 are respectively disposed at two ends of the first portion 110 along the first direction, and the second portion 120 is fixedly connected to the first portion 110, and the through hole 320 is provided on the second portion 120. The first direction is parallel to the axis of the rotating shaft 310, that is, the first direction is the Y-axis direction.

[0081] Exemplarily, the first portion 110 and the two second portions 120 are both flat plate structures, and the first portion 110 and the two second portions 120 are both arranged perpendicular to each other (for example, the first portion 110 is parallel to the YZ plane, and the second portion 120 is parallel to the XZ plane). In the XY plane, a portion of the rotating seat 200 extends into the space enclosed by the two second portions 120 and the first portion 110, that is, a portion of the rotating seat 200 is located between the two second portions 120.

[0082] The second part 120 and the first part 110 may be fixed to each other by bonding, clamping, welding, threading, etc., or the second part 120 and the first part 110 may be integrally formed to form a structural component. Therefore, this application does not make any special limitation to this.

[0083] Furthermore, a portion of the rotating seat 200 is disposed between the two second portions 120, and the rotating shaft 310 is fixed to the side wall of the rotating seat 200 facing the second portion 120. Both ends of the rotating shaft 310 are respectively inserted into the through holes 320 opened on the corresponding second portion 120, thereby realizing the rotating connection between the rotating seat 200 and the base 100.

[0084] On this basis, in order to enable the display part 10 to form any angle with the keyboard part, that is, the display part 10 can be kept at any position. Figure 5 , Figure 6 as well as Figure 7The hinge assembly 30 further includes a fixing seat 400, which is disposed on both sides of the base along the axial direction (i.e., the Y-axis direction) of the rotating shaft 310. The fixing seat 400 is provided with an axial hole 410, and the two ends of the rotating shaft 310 are respectively inserted into the corresponding axial holes 410 on the fixing seat 400. The rotating shaft 310 and the axial hole 410 are interference fit.

[0085] The rotating shaft 310 and the shaft hole 410 are interference fit, so the friction force generated between the rotating shaft 310 and the shaft hole 410 can form a damping force during the relative rotation between the base 100 and the rotating seat 200. In this embodiment, the axis of the rotating shaft 310 is parallel to the Y-axis direction.

[0086] Exemplarily, along the circumference of the rotating shaft 310, the outer wall of the rotating shaft 310 and the inner wall of the shaft hole 410 are completely fitted and have an interference fit, i.e., an interference fit, so that the relative rotation between the rotating shaft 310 and the shaft hole 410 generates friction force, thereby forming a damping force.

[0087] Alternatively, a protruding structure may be formed on the outer wall of the rotating shaft 310, and an interference fit is formed between the protruding structure and the inner wall of the shaft hole 410, that is, an interference fit is formed between the outer wall of the rotating shaft 310 and a local area of ​​the inner wall of the shaft hole 410, so that the relative rotation between the rotating shaft 310 and the shaft hole 410 generates friction force, thereby forming a damping force.

[0088] It is understandable that the above-mentioned protruding structure may be provided with only one or more protruding structures. Moreover, the protruding structure may also be provided on the inner wall of the shaft hole 410. Therefore, the present application does not specifically limit the specific structure of the interference fit between the rotating shaft 310 and the shaft hole 410.

[0089] In addition, in order to make the relative rotation of the rotating shaft 310 and the shaft hole 410 smoother, a lubricating material may be added between the rotating shaft 310 and the shaft hole 410 provided in the embodiment of the present application. Figure 8 and Fig. 9 , Figure 8 This is a structural diagram of another rotating shaft 310 provided in an embodiment of the present application. Fig. 9 for Figure 8 A partial cross-sectional structural diagram of the rotating shaft 310 and the shaft hole 410 is provided. A groove 311 may be provided on at least one of the outer wall of the rotating shaft 310 or the inner wall of the shaft hole 410. The groove 311 is used to store lubricating material, so that during the relative rotation of the rotating shaft 310 and the shaft hole 410, the lubricating material in the groove 311 can cover the outer wall of the rotating shaft 310 and the inner wall of the shaft hole 410, thereby making the relative rotation between the rotating shaft 310 and the shaft hole 410 smoother and reducing wear, which is conducive to improving the user experience.

[0090] For example, please refer to Figure 8 and Fig. 9 The above-mentioned groove 311 can be opened on the outer wall of the rotating shaft 310. Since the rotating shaft 310 and the shaft hole 410 are tightly matched (i.e., interference fit) so that there is an interference amount between the two, a closed space is formed between the groove 311 on the rotating shaft 310 and the inner wall of the shaft hole 410. When the rotating shaft 310 and the shaft hole 410 rotate relative to each other, the area where the inner wall of the rotating shaft 310 and the groove 311 are opposite to each other can contact the lubricating material. Therefore, during the rotation process, the lubricating material added in the groove 311 can be smeared on the inner wall of the shaft hole 410, and then on the outer wall of the rotating shaft, thereby playing a lubricating role between the rotating shaft 310 and the shaft hole 410.

[0091] Furthermore, since there is a certain interference fit between the rotating shaft 310 and the shaft hole 410 , there is still a damping force during the relative rotation of the rotating shaft 310 and the shaft hole 410 , so that the user can rotate the display component more smoothly while keeping the display component at any position.

[0092] Based on this, see Fig.10 and Fig.11 , Fig.10 This is a partial structural diagram of the electronic device 01 provided in an embodiment of the present application when it is in a folded state. Fig.11 This is a partial structural diagram of the electronic device 01 provided in the embodiment of the present application when it is in an open state. Fig.10 and Fig.11 The electronic device 01 provided includes the above Figure 5-Figure 7 The hinge assembly 30 is shown.

[0093] In this way, the hinge assembly 30 provided in the embodiment of the present application fixedly connects the rotating seat 200 with the display portion 10, and fixedly connects the base 100 with the keyboard portion 20, thereby realizing the rotational connection between the display portion 10 and the keyboard portion 20. In the hinge assembly 30, the base 100 and the rotating seat 200 are rotationally connected through the rotating shaft 310 and the through hole 320, and the overall structure is simple, which can reduce costs and help reduce the overall volume, thereby helping to make the electronic device 01 lighter and thinner as a whole.

[0094] At the same time, fixed seats 400 are provided on both sides of the base 100, and both ends of the rotating shaft 310 are respectively inserted into the corresponding shaft holes 410 on the fixed seats 400, and the rotating shaft 310 and the shaft hole 410 are interference fit, that is, there is an interference fit between the rotating shaft 310 and the shaft hole 410, so that when the rotating shaft 310 and the shaft hole 410 rotate relative to each other, friction can be generated to form a damping force, so that the display part 10 can be maintained at different positions relative to the keyboard part 20, which is beneficial to improving the user experience.

[0095] Furthermore, during the installation process, the two ends of the rotating shaft 310 on the rotating seat 200 can be respectively inserted into the corresponding through holes 320. Since the through holes 320 and the rotating shaft 310 only need to be plugged together and do not need to have an interference fit, the rotating shaft 310 can be inserted into the through holes 320, which is convenient for installation. Then, the above-mentioned fixed seat 400 is respectively sleeved on the rotating shaft 310 along the axial direction from the two ends of the rotating shaft 310, and the two can be interference fit. This is conducive to reducing the overall installation difficulty.

[0096] In some embodiments, see Fig.12 and Fig.13 , Fig.12 This is an exploded view of another base 100 in the hinge assembly 30 provided in an embodiment of the present application. Fig.13 for Fig.12 The structural diagram of the hinge assembly 30 is provided. The through hole 320 on the second part 120 can extend in its radial direction and penetrate the side wall of the second part 120. For example, the through hole 320 can extend along the Z-axis direction and penetrate the upper surface of the second part 120. In this way, during the installation of the rotating base 200, it is only necessary to put the rotating shaft 310 into the through hole 320 from the notch on the upper surface of the second part 120, thereby further reducing the difficulty of installation.

[0097] Then, the fixing seats 400 are respectively installed at both ends of the rotating shaft 310, that is, the fixing seats 400 are respectively sleeved on the ends of the rotating shaft 310 along the axial direction of the rotating shaft 310, and there is an interference between the two to achieve a tight fit. Finally, the fixing seat 400 is fixedly connected to the corresponding second part 120. For example, the fixing seat 400 and the second part 120 can be fixedly connected by screws, or can also be fixedly connected by welding, bonding, clamping, etc.

[0098] To reduce the thickness of the electronic device 01, please refer to Fig.14 and Fig.15 , Fig.14 Another electronic device 01 (including Fig.13 A partial structural diagram of the hinge assembly 30 is provided, Fig.15 for Fig.14 A region structure enlarged diagram, where Fig.15The enlarged view shown omits the structure of the middle area along the Z-axis direction (the curve in the figure represents the cross section). Along the thickness direction of the electronic device 01, that is, the Z-axis direction, the highest point of the second part 120 and the fixing seat 400 can be flush with the highest point of the rotating shaft 310. Alternatively, the highest point of the second part 120 and the fixing seat 400 can also be lower than the highest point of the rotating shaft 310. It can be understood that the highest point of the second part 120, the fixing seat 400 and the rotating shaft 310 refers to the point farthest from the bottom surface of the bottom shell 23 along the thickness direction of the keyboard part 20 (that is, the vertical direction) when the hinge assembly 30 is installed in the bottom shell 23 of the keyboard part 20.

[0099] Specifically, the distance L3 between the top surface of the second part 120 along the Z-axis direction and the bottom surface of the keyboard part 20 (i.e., the bottom surface of the bottom shell 23) is less than or equal to the distance L1 between the vertex of the rotating shaft 310 and the bottom surface of the keyboard part 20. This avoids the second part 120 from being too large along the Z-axis direction, which is conducive to reducing the thickness of the keyboard part 20.

[0100] Furthermore, the distance L2 between the top surface of the fixing seat 400 along the Z-axis direction and the bottom surface of the keyboard part 20 (i.e., the bottom surface of the bottom shell 23) is less than or equal to the distance L1 between the vertex of the rotating shaft 310 and the bottom surface of the keyboard part 20. Under this structure, the shaft hole 410 opened on the fixing seat 400 forms a notch on the side away from the bottom surface of the bottom shell 23, that is, the inner wall of the shaft hole 410 is an arc surface with an arc center angle greater than 180° and less than 360°. For example, the arc center angle of the arc surface formed by the inner wall of the shaft hole 410 can be 270°, 280°, 290°, 300° or 350°, etc.

[0101] In this way, on the one hand, the rotating shaft 310 can still fit closely with the shaft hole 410, and a damping force can be formed when the two rotate relative to each other. On the other hand, since the fixing seat 400 and the second part 120 both form a notch structure, and the highest point is lower than the rotating shaft 310, that is, the side of the rotating shaft 310 away from the bottom surface of the bottom shell 23 is not provided with the fixing seat 400 and the second part 120, which is conducive to reducing the size of the hinge assembly 30 along the Z-axis direction, and further conducive to reducing the thickness of the keyboard part 20, which is conducive to the thinness of the electronic device 01.

[0102] For other possible examples, see Fig.16 , Fig.16A partial structure enlarged view of another electronic device 01 provided in an embodiment of the present application. The distance L3 between the top surface of the second part 120 along the Z-axis direction and the bottom surface of the keyboard part 20 may also be greater than the distance L1 between the apex of the rotating shaft 310 and the bottom surface of the keyboard part 20, that is, L3>L1>L2. In this way, the top surface of the second part 120 is higher than the apex of the rotating shaft 310, which can avoid the apex of the rotating shaft 310 and the inner wall of the upper shell 22 of the keyboard part 20 from contacting each other, that is, it can avoid the inner wall of the upper shell 22 from hindering the rotation of the rotating shaft 310, thereby ensuring the normal rotation of the rotating shaft 310.

[0103] In some embodiments, see Fig.17 , Fig.17 This is an exploded view of another base 100 in the hinge assembly 30 provided in an embodiment of the present application. A positioning shaft 121 and a positioning hole 420 may be further provided between the second portion 120 of the base 100 and the fixing seat 400, one of the positioning shaft 121 and the positioning hole 420 is provided on the second portion 120, the other of the positioning shaft 121 and the positioning hole 420 is provided on the fixing seat 400, and the positioning shaft 121 is inserted into the positioning hole 420, thereby achieving pre-positioning between the base 100 and the fixing seat 400.

[0104] Furthermore, the positioning shaft 121 and the positioning hole 420 may be provided in multiple groups between the fixing seat 400 and the second part 120. In this way, the positioning shaft 121 and the positioning hole 420 can prevent the second part 120 and the fixing seat 400 from relative movement in a direction perpendicular to the axis of the positioning shaft 121 (i.e., in any direction in the XZ plane) during the installation process, so as to facilitate the fixing of the second part 120 and the fixing seat 400, which is conducive to improving the overall installation accuracy.

[0105] On this basis, see Fig.18 and Fig.19 , Fig.18 This is an exploded view of another base 100 in the hinge assembly 30 provided in an embodiment of the present application. Fig.19 Another electronic device 01 provided in an embodiment of the present application (including Fig.18 The base 100 may further include a third portion 130, which may be disposed on surfaces of the two second portions 120 that are opposed to each other, and the third portion 130 is used to be fixedly connected to the keyboard portion 20 (i.e., the first component) so that the base 100 is fixedly connected to the keyboard portion 20.

[0106] For example, the third part 130 may be provided on the surfaces of the two second parts 120 facing away from each other, and the third part 130 and the second part 120 may be fixed by gluing, clamping, welding or screwing. Alternatively, the third part 130 and the second part 120 may be integrally formed, that is, the third part 130, the second part 120 and the first part 110 may form a structural component as a whole to improve the connection strength of the overall structure.

[0107] Furthermore, the third part 130 and the keyboard part 20 may be fixedly connected by gluing, clamping, welding or screwing. Fig.18 and Fig.19 The third part 130 may be a plate-like structure and parallel to the XY plane, and a mounting hole 131 is provided on the third part 130. The bottom shell 23 of the keyboard part 20 is provided with a stud 23a, and a threaded hole 23b is provided on the stud 23a. The third part 130 and the stud 23a of the bottom shell 23 are locked and fixed by screws, so that the base 100 and the bottom shell 23 are fixedly connected.

[0108] In addition, since the third part 130 is arranged on the surfaces opposite to each other of the two second parts 120, that is, the two third parts 130 are distributed along the Y-axis direction, it is beneficial to the force balance when the base 100 and the bottom shell 23 are fixedly connected, thereby improving the connection reliability between the base 100 and the bottom shell 23.

[0109] Based on this, the above is a detailed description of the base 100 in the hinge assembly 30, and the following is a detailed description of the rotating base 200 in the hinge assembly 30. Fig. 20 and Fig.21 , Fig. 20 This is a structural diagram of a rotating seat 200 in the hinge assembly 30 provided in an embodiment of the present application. Fig.21 for Fig. 20 A cross-sectional structural diagram of the rotating seat 200 and the base 100 after being assembled is provided.

[0110] The rotating seat 200 may include an arc portion 210, a first connecting portion 220 and a second connecting portion 230. The axis of the arc portion 210 is parallel to the axis of the rotating shaft 310, that is, the axis of the arc portion 210 is arranged along the Y-axis direction. Along the circumference of the arc portion 210, the first end of the arc portion 210 is fixedly connected to the first connecting portion 220, and the second end of the arc portion 210 is fixedly connected to the second connecting portion 230. The rotating shaft 310 is fixed on the first connecting portion 220, and the second connecting portion 230 is fixedly connected to the display portion 10 (i.e., the second component).

[0111] In some embodiments, the arc portion 210 may be a circular plate-like structure, for example, the arc center angle of the circular arc may be 180°. When the arc portion 210 rotates around its circumference, the distance between the arc portion 210 and the adjacent components (for example, the inner wall of the first portion 110 of the base 100) can be made the same, thereby preventing the arc portion 210 from colliding with other components during the rotation process.

[0112] Since the rotating seat 200 needs to rotate around the rotating shaft 310, that is, the axis of the rotating shaft 310 is the axis of relative rotation between the rotating seat 200 and the base 100. Therefore, in the embodiment of the present application, the axis of the arc portion 210 and the axis of the rotating shaft 310 can coincide with each other. In this way, during the relative rotation of the rotating seat 200 and the base 100, the distance between the part of the arc portion 210 located between the two second parts 120 and the first part 110 of the base 100 remains unchanged (that is, the distance along the X-axis direction), that is, the arc portion 210 will not collide with the first part 110 of the base 100 during the rotation process, thereby ensuring that the rotating seat 200 can rotate smoothly relative to the base 100.

[0113] For example, please refer to Fig. 20 and Fig.21 The first connection portion 220 may be a flat plate structure, which is fixed to the edge of the first end of the arc portion 210 along the circumferential direction, and the first connection portion 220 extends in a direction close to the axis of the arc portion 210. The rotating shaft 310 may be fixed to a side of the first connection portion 220 away from the first end of the arc portion 210, so that the rotating shaft 310 can be coaxially arranged with the arc portion 210.

[0114] Furthermore, the rotating shaft 310 can be an integral structure and fixedly connected to the first connecting portion 220, with its two ends extending along the axial direction thereof, respectively inserted into the through holes 320 on the two second portions 120, and tightly matched with the shaft holes 410 on the two fixing seats 400. Alternatively, the rotating shaft 310 can also include two sub-rotating shafts, that is, the axes of the two sub-rotating shafts are located on the same straight line, the two sub-rotating shafts are respectively fixed to the two sides of the first connecting portion 220 along the axial direction of the arc-shaped portion 210, and each sub-rotating shaft is respectively connected to the corresponding second portion 120 and the fixing seat 400. Therefore, the present application does not specifically limit the specific structure of the rotating shaft 310.

[0115] In addition, the second connection portion 230 may also be a flat plate structure, which is fixed to the edge of the second end of the arc portion 210 along the circumferential direction, and the second connection portion 230 extends in a direction away from the axis of the arc portion 210. The second connection portion 230 is used to be fixedly connected to the second component, that is, the display portion 10, so as to achieve a fixed connection between the rotating base 200 and the display portion 10.

[0116] In some embodiments, see Fig. 22 , Fig. 22 for Fig. 20 The second connecting portion 230 can be connected to the upper cover 11 (such as Figure 1 and Figure 2 For example, the second connection part 230 is fixedly connected to the upper cover 11 by gluing, clamping, screw connection or welding. Thus, the rotating base 200 and the display part 10 can be fixedly connected, so that the rotating base 200 can drive the display part 10 to rotate, thereby realizing the display part 10 of the electronic device 01 to rotate relative to the keyboard part 20.

[0117] In addition, it can be seen from the above that the display screen 12 of the display part 10 and the mainboard disposed inside the keyboard part 20 can be electrically connected via a flexible connector (i.e., an FPC board, not shown in the figure). To ensure the overall aesthetics of the electronic device 01, the FPC board can be disposed on the inner surface of the arc-shaped portion 210. When the electronic device 01 is in the open state, the arc-shaped portion 210 can shield the FPC board to prevent the FPC board from being exposed, thereby improving the aesthetics.

[0118] Also, to facilitate the setup of the above PFC board, please refer to Fig.23 and Fig.24 , Fig.23 An exploded view of another hinge assembly 30 provided in an embodiment of the application, Fig.24 for Fig.23 A cross-sectional structural diagram of the hinge assembly 30 is provided. The first connecting portion 220 is also provided with an avoidance hole 221, through which the FPC board passes, thereby preventing the FPC board from being excessively bent between the main board and the display screen 12, which is beneficial to protecting the FPC board intact and reducing the risk of damage to the FPC board due to bending.

[0119] Based on this, the rotating seat 200 may further include an arc plate 240, which is fixedly connected to the arc portion 210, and a spacing space 250 is provided between the arc plate 240 and the inner wall of the arc portion 210, the spacing space 250 extends from the first end of the arc portion 210 to the second end of the arc portion 210, and the end of the spacing space 250 close to the first end of the arc portion 210 is opposite to the avoidance hole 221, that is, the spacing space 250 extends along the circumference of the arc portion 210 and is interconnected with the avoidance hole 221. The FPC board may be disposed in the spacing space 250.

[0120] For example, see Fig.25 , Fig.25The exploded view of another rotating seat 200 provided in the embodiment of the present application. An arc groove 211 is formed on the inner wall of the arc portion 210 and extends from the first end of the arc portion 210 to the second end of the arc portion 210 along the circumference of the arc portion 210. The arc plate 240 is spaced apart from the bottom of the arc groove 211 and is fixedly connected to the arc portion 210, so that a groove is formed between the arc plate 240 and the bottom of the arc groove 211 as shown in FIG. Fig.24 The spacing 250 is shown.

[0121] In this way, the partition space 250 forms an extended channel with both ends communicating with the outside, and one end of the extended channel is mutually communicated with the avoidance hole 221. Therefore, the FPC board is arranged in the partition space 250, which can prevent the FPC board from being exposed, which is beneficial to the overall appearance. On the other hand, it can better protect the FPC board to further reduce the risk of damage to the FPC board.

[0122] It should be noted that the FPC board is disposed in the spacing space 250, but the FPC board and the rotating base 200 are not connected to each other, that is, the two are not relatively fixed. During the rotation of the rotating base 200, the rotating base 200 and the FPC board move relative to each other, thereby preventing the FPC board from being pulled, thereby further reducing the risk of damage to the FPC board.

[0123] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0124] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A hinge assembly, characterized in that: include: A fixing seat, wherein an axial hole is formed on the fixing seat, the axial hole extends radially and penetrates through the surface of the fixing seat to form a notch, so that the inner wall of the axial hole forms an arc surface with an arc center angle greater than 180° and less than 360°; A rotating shaft, the end of which is inserted into the shaft hole and has an interference fit with the shaft hole; The rotating seat is fixedly connected to the rotating shaft and is rotatably connected to the fixed seat through the rotating shaft.

2. The hinge assembly according to claim 1, characterized in that: Along the height direction of the fixing seat, the highest point of the fixing seat is flush with the highest point of the rotating shaft; or, along the height direction of the fixing seat, the highest point of the fixing seat is lower than the highest point of the rotating shaft.

3. The hinge assembly according to claim 1 or 2, characterized in that: A protruding structure is formed on the outer wall of the rotating shaft, and the protruding structure is interference-fitted with the shaft hole.

4. The hinge assembly according to any one of claims 1 to 3, characterized in that: The rotating seat includes an arc-shaped portion and a first connecting portion, the axis of the arc-shaped portion is parallel to the axis of the rotating shaft, and the first connecting portion extends in a direction close to the axis of the arc-shaped portion; along the circumference of the arc-shaped portion, the first end of the arc-shaped portion is fixedly connected to the first connecting portion, and the first connecting portion is fixed on the rotating shaft.

5. The hinge assembly according to claim 4, characterized in that: The first connecting portion is a flat plate structure.

6. The hinge assembly according to claim 4 or 5, characterized in that: The axis of the arc portion coincides with the axis of the rotating shaft.

7. The hinge assembly according to any one of claims 4 to 6, characterized in that: The rotating seat also includes a second connecting portion, and the second connecting portion is fixed to the second end of the arc-shaped portion.

8. The hinge assembly according to claim 7, characterized in that: The second connecting portion is a flat plate structure.

9. The hinge assembly according to any one of claims 4 to 8, characterized in that: The first connecting portion is provided with an avoidance hole.

10. The hinge assembly according to claim 9, characterized in that: The rotating seat also includes an arc-shaped plate, which is arranged on the inner side of the arc-shaped portion, the arc-shaped plate is fixedly connected to the arc-shaped portion, and there is a spacing space between the arc-shaped plate and the inner wall of the arc-shaped portion, and the spacing space extends from the first end of the arc-shaped portion to the second end of the arc-shaped portion; the end of the spacing space close to the first end of the arc-shaped portion is opposite to the avoidance hole, and the spacing space is connected to the avoidance hole.

11. The hinge assembly according to any one of claims 1 to 10, characterized in that: The rotating shaft and the rotating seat are integrally formed.

12. The hinge assembly according to any one of claims 1 to 11, characterized in that: The fixing seats are provided with two, and the two fixing seats are arranged on both sides of the rotating seat along the axial direction of the rotating shaft.

13. The hinge assembly according to claim 12, characterized in that: The hinge assembly also includes a base, and the base includes two second parts. The two second parts are respectively arranged on both sides of the rotating base and respectively arranged between the fixed base and the rotating base.

14. The hinge assembly according to claim 13, characterized in that: The two second parts are both provided with through holes; the two ends of the rotating shaft are respectively inserted into the through holes on the two second parts, and are respectively inserted into the shaft holes on the two fixing seats.

15. The hinge assembly according to claim 14, characterized in that: The through hole extends along the radial direction of the rotating shaft and passes through the side wall of the base.

16. The hinge assembly according to any one of claims 13 to 15, characterized in that: Along the height direction of the fixing seat, the highest point of the second part is higher than the highest point of the rotating shaft.

17. The hinge assembly according to any one of claims 13 to 16, characterized in that: The fixing seat is fixedly connected to the base.

18. The hinge assembly according to any one of claims 13 to 17, characterized in that: The base also includes a first part, and two second parts are respectively arranged at two ends of the first part and fixedly connected to the first part.

19. The hinge assembly according to any one of claims 13 to 18, characterized in that: The base further comprises a third part, and the third part is fixedly arranged on two surfaces of the second parts which are opposite to each other.

20. The hinge assembly according to any one of claims 13 to 19, characterized in that: A positioning shaft and a positioning hole are provided between the base and the fixing seat, one of the positioning shaft and the positioning hole is provided on the base, the other of the positioning shaft and the positioning hole is provided on the fixing seat, and the positioning shaft is inserted into the positioning hole.

21. The hinge assembly according to claim 20, characterized in that A plurality of groups of the positioning shafts and the positioning holes are arranged between the base and the fixing seat.

22. The hinge assembly according to any one of claims 1 to 21, characterized in that: A groove is provided on at least one of the outer wall of the rotating shaft facing the shaft hole and the inner wall of the shaft hole facing the rotating shaft, and the groove is used for adding lubricating material.

23. An electronic device, characterized in that: It comprises a first component, a second component and a hinge assembly, wherein the hinge assembly is the hinge assembly according to any one of claims 1 to 22, the fixing seat of the hinge assembly is fixedly connected to the first component, and the hinge assembly is fixedly connected to the second component; wherein the first component and the second component can be rotated relative to each other through the hinge assembly.

24. The electronic device according to claim 23, characterized in that: The first component includes a keyboard part, the second component includes a display part, and the second connecting portion of the hinge assembly is fixedly connected to the second component.

25. The electronic device according to claim 23 or 24, characterized in that: The first component includes a first region and a second region, and the thickness of the first region is smaller than the thickness of the second region; When the second component and the first component are engaged with each other, the second component and the first region are stacked.

26. The electronic device according to claim 25, characterized in that: The sum of the thickness of the second component and the thickness of the first region is equal to the thickness of the second region.

27. The electronic device according to claim 25 or 26, characterized in that: An interface module is disposed in the second area, and a socket of the interface module is disposed on a surface of the second area away from the first area.

28. The electronic device according to any one of claims 23 to 27, characterized in that: A plurality of hinge assemblies are provided, and the plurality of hinge assemblies are distributed at intervals along the rotation axis between the second component and the first component.

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