Hinge device and electronic device

Abstract

The present application discloses a hinge device and an electronic device, belonging to the technical field of electronic devices. The hinge device includes: a swing arm, a substrate, and a damping mechanism. The damping mechanism includes: a fixing member, an elastic member, a rotating shaft, and a shaft sleeve. The fixing member is fixedly connected to the substrate. Wherein, the rotating shaft includes a first shaft portion and a second shaft portion. The first shaft portion is slidably connected to the fixing member in a first direction. The radial dimension of the second shaft portion gradually decreases in the first direction. The first direction is the direction from the first shaft portion to the second shaft portion. The elastic member is disposed between the fixing member and the second shaft portion. Two ends of the elastic member are respectively abutted against the fixing member and the second shaft portion. The shaft sleeve is sleeved on the second shaft portion and can rotate relative to the rotating shaft. The shaft sleeve is fixedly connected to the swing arm. During the rotation of the shaft sleeve relative to the rotating shaft, the swing arm rotates relative to the substrate.

Description

Technical Field

[0001] This application belongs to the technical field of electronic devices, and particularly relates to a hinge device and an electronic device. Background Art

[0002] With the development of electronic device technology, electronic devices have become more and more popular. In order to control the feel of an electronic device during the folding process, or in order to better suspend the electronic device in any folded state, a damping mechanism is usually provided in the electronic device.

[0003] In related technologies, the damping mechanism usually includes a rotating swing arm, a first cam, and a second cam. During the folding process of the electronic device, the rotating swing arm drives the first cam to rotate, and then drives friction to occur between the first cam and the second cam, thereby generating a damping effect.

[0004] However, with the increase in the number of folding times, the first cam and the second cam are prone to wear, thereby reducing the damping effect of the damping mechanism, reducing the feel of using the electronic device, and affecting the user experience. Summary of the Invention

[0005] This application aims to provide a hinge device and an electronic device, which at least solve the problem that the damping effect is reduced with the increase in the number of folding times in the prior art, thereby reducing the feel of using the electronic device and affecting the user experience.

[0006] To solve the above technical problems, this application is implemented as follows:

[0007] In a first aspect, an embodiment of this application provides a hinge device, including: a swing arm, a substrate, and a damping mechanism. The damping mechanism includes: a fixing member, an elastic member, a rotating shaft, and a bushing. The fixing member is fixedly connected to the substrate;

[0008] Wherein, the rotating shaft includes a first shaft portion and a second shaft portion. The first shaft portion is slidably connected to the fixing member in a first direction. The radial dimension of the second shaft portion gradually decreases along the first direction. The first direction is the direction from the first shaft portion to the second shaft portion;

[0009] The elastic member is disposed between the fixing member and the second shaft portion, and both ends of the elastic member are in contact with the fixing member and the second shaft portion respectively;

[0010] The bushing is sleeved on the second shaft portion and can rotate relative to the rotating shaft. The bushing is fixedly connected to the swing arm. During the rotation of the bushing relative to the rotating shaft, the swing arm rotates relative to the substrate.

[0011] In a second aspect, an embodiment of this application provides an electronic device, including a first housing, a second housing, and the hinge device;

[0012] The first housing and the second housing are rotatably connected through the hinge device. When the first housing and the second housing rotate relative to each other, the electronic device switches between the unfolded state and the folded state.

[0013] In an embodiment of the present application, two ends of the elastic member respectively abut against the fixing member and the second shaft portion. The sleeve is sleeved outside the second shaft portion and is rotatably connected to the second shaft portion. Since the radial dimension of the second shaft portion gradually decreases along the first direction, where the first direction is the direction from the first shaft portion to the second shaft portion, in this way, after wear occurs in the rotational friction between the rotating shaft and the sleeve, the first shaft portion can be slidably connected to the fixing member along the first direction, and the elastic member can squeeze the second shaft portion, so that the rotating shaft and the sleeve can always be pressed tightly, and thus an automatic compensation mechanism can be formed to always maintain a good damping effect. Further, after applying the hinge device to an electronic device, the use feel of the electronic device can be improved, and the user experience can be enhanced.

[0014] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0016] Figure 1 is a schematic structural diagram of a hinge device in an embodiment of the present application;

[0017] Figure 2 is a schematic cross-sectional structural diagram of a hinge device in an embodiment of the present application;

[0018] Figure 3 is a schematic structural diagram of an electronic device in the unfolded state in an embodiment of the present application;

[0019] Figure 4 is a schematic structural diagram of an electronic device in the folded state in an embodiment of the present application;

[0020] Figure 5 is a schematic structural diagram of another hinge device in an embodiment of the present application;

[0021] Figure 6 is a schematic structural diagram of still another hinge device in an embodiment of the present application;

[0022] Figure 7 is in an embodiment of the present application Figure 6Schematic diagram of the enlarged structure at A in the [Chinese context];

[0023] Figure 8 It is a schematic diagram of the structure of a hinge device in an embodiment of the present application before wear;

[0024] Figure 9 It is a schematic diagram of the structure of a hinge device in an embodiment of the present application after wear;

[0025] Figure 10 It is a schematic diagram of the structure of another hinge device in an embodiment of the present application;

[0026] Figure 11 It is the [Chinese context] Figure 10 Schematic diagram of the sectional structure of the hinge device in a certain direction;

[0027] Figure 12 It is the [Chinese context] Figure 10 Schematic diagram of the sectional structure of the hinge device in another direction;

[0028] Figure 13 It is a schematic diagram of the structure of a bushing in an embodiment of the present application;

[0029] Figure 14 It is the [Chinese context] Figure 13 Schematic diagram of the sectional structure of the bushing;

[0030] Figure 15 It is a schematic diagram of the structure of a rotating shaft in an embodiment of the present application;

[0031] Figure 16 It is a schematic diagram of the structure of the cooperation between a rotating shaft and a bushing in an embodiment of the present application;

[0032] Figure 17 It is a schematic diagram of the structure of another rotating shaft in an embodiment of the present application;

[0033] Figure 18 It is a schematic diagram of the structure of an insert block in an embodiment of the present application;

[0034] Figure 19 It is the [Chinese context] Figure 18 Schematic diagram of the sectional structure of the insert block.

[0035] Reference numerals:

[0036] 1 - Swing arm, 11 - First swing arm, 12 - Second swing arm, 2 - Substrate, 3 - Damping mechanism, 31 - Fixing member, 311 - First fixing member, 312 - Second fixing member, 32 - Elastic member, 33 - Rotating shaft, 331 - First shaft portion, 332 - Second shaft portion, 333 - Third shaft portion, 34 - Bush, 41 - First magnetic member, 42 - Second magnetic member, 5 - Sealing ring, 6 - Viscous fluid, 7 - Insert block, 81 - Synchronous gear set, 82 - First gear, 83 - Second gear, 84 - Fixed base, 85 - First connecting shaft, 86 - Second connecting shaft, 200 - Housing, 201 - First housing, 202 - Second housing. Detailed implementation manners

[0037] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary only for explaining the present application and should not be construed as limiting the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts fall within the scope of protection of the present application.

[0038] The features of the terms "first" and "second" in the description and claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally means an "or" relationship between the related objects before and after.

[0039] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "thickness", "upper", "lower", "inner", "outer", "axial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application.

[0040] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0041] The following will be combined with Figure 1 - Figure 19 describe the hinge device and the electronic device according to the embodiments of the present application.

[0042] In a first aspect, embodiments of the present application specifically disclose a hinge device, as Figure 1 and Figure 2 shown. In some embodiments of the present application, the hinge device may specifically include: a swing arm 1, a substrate 2, and a damping mechanism 3. The damping mechanism 3 includes: a fixing member 31, an elastic member 32, a rotating shaft 33, and a bushing 34. The fixing member 31 is fixedly arranged on the substrate 2. Among them, the rotating shaft 33 includes a first shaft portion 331 and a second shaft portion 332. The first shaft portion 331 is slidably connected to the fixing member 31 along a first direction. The radial dimension of the second shaft portion 332 gradually decreases along the first direction, and the first direction is the direction from the first shaft portion 331 to the second shaft portion 332. The elastic member 32 is arranged between the fixing member 31 and the second shaft portion 332, and both ends of the elastic member 32 are in contact with the fixing member 31 and the second shaft portion 332 respectively. The bushing 34 is sleeved on the second shaft portion 332 and can rotate relative to the rotating shaft 33. The bushing 34 is fixedly connected to the swing arm 1. During the rotation of the bushing 34 relative to the rotating shaft 33, the swing arm 1 rotates relative to the substrate 2.

[0043] In the embodiments of the present application, both ends of the elastic member 32 are in contact with the fixing member 31 and the second shaft portion 332 respectively. The bushing 34 is sleeved outside the second shaft portion 332 and is rotatably connected to the second shaft portion 332. Since the radial dimension of the second shaft portion 332 gradually decreases along the first direction, and the first direction is the direction from the first shaft portion 331 to the second shaft portion 332, in this way, after wear occurs in the rotational friction between the rotating shaft 33 and the bushing 34, the first shaft portion 331 can be slidably connected to the fixing member 31 along the first direction, and the elastic member 32 can squeeze the second shaft portion 332, so that the second shaft portion 332 and the bushing 34 can always be pressed tightly, and thus an automatic compensation mechanism can be formed to always maintain a good damping effect. Further, after the hinge device is applied to an electronic device, the use feel of the electronic device can be improved, and the user experience can be enhanced.

[0044] The hinge device described in the embodiments of the present application can be applied inside an electronic device to realize the folding function of the electronic device.

[0045] Optionally, the hinge device includes a swing arm 1, a base plate 2, and a damping mechanism 3. Specifically, the damping mechanism 3 may include a fixing member 31, an elastic member 32, and a corresponding rotating shaft 33 and a bushing 34. Optionally, the swing arm 1 is fixedly connected to the bushing 34, and the swing arm 1 can drive the bushing 34 to rotate relative to the rotating shaft 33. Since the fixing member 31 can be fixed to the base plate 2, and both ends of the elastic member 32 are abutted against the fixing member 31 and the rotating shaft 33 respectively, in this way, when the swing arm 1 and the bushing 34 move synchronously and the bushing 34 rotates relative to the rotating shaft 33, the swing arm 1 can rotate relative to the base plate 2.

[0046] Further, both the swing arm 1 and the base plate 2 can be used to connect to the housing 200 of the electronic device, so as to facilitate the folding function of the electronic device. Optionally, the swing arm 1 can be fixed to the housing 200 by screws, or can be fixed to the housing 200 by adhesive bonding, which can be specifically set according to actual requirements, and the embodiments of the present application do not make specific limitations thereto.

[0047] Exemplarily, as Figure 3 and Figure 4 shown, the electronic device may include a first housing 201 and a second housing 202. The swing arm 1 may include a first swing arm 11 and a second swing arm 12. The first swing arm 11 and the second swing arm 12 are respectively arranged on both sides of the base plate 2. The first swing arm 11 is fixedly connected to the first housing 201, and the second swing arm 12 is fixedly connected to the second housing 202. In this way, when the rotating shaft 33 and the bushing 34 rotate relative to each other, the first swing arm 11 and the second swing arm 12 both rotate relative to the base plate 2, so that the first housing 201 and the second housing 202 can both rotate relative to the base plate 2, thereby realizing the folding function of the electronic device.

[0048] Optionally, the base plate 2 may be a flat plate structure and can be used to support and install the damping mechanism 3. The swing arm 1 may be a connecting plate or a connecting rod, etc., and can be used to connect the bushing 34.

[0049] Optionally, the swing arm 1 and the bushing 34 may be an integrally formed structure, or may also be fixed by bonding, adhesive bonding, bolt connection, etc., which can be specifically set according to actual requirements, and the embodiments of the present application do not make specific limitations thereto.

[0050] Optionally, the fixing member 31 and the base plate 2 may be an integrally formed structure, or may also be fixed by bonding, adhesive bonding, bolt connection, etc., which can be specifically set according to actual requirements, and the embodiments of the present application do not make limitations thereto.

[0051] Optionally, the fixing member 31 may be a flat plate structure, an L-shaped structure, a T-shaped structure, etc., which can be specifically set according to actual requirements, and the embodiments of the present application do not make specific limitations thereto.

[0052] Optionally, the rotating shaft 33 may include a first shaft portion 331 and a second shaft portion 332, and the radial dimension of the second shaft portion 332 gradually decreases along the first direction; the first shaft portion 331 is slidably connected to the fixing member 31 along the first direction; at least a part of the second shaft portion 332 is embedded in the shaft sleeve 34 and is rotatably connected to the shaft sleeve 34.

[0053] Optionally, the elastic member 32 is disposed between the fixing member 31 and the second shaft portion 332, and two ends of the elastic member 32 may respectively abut against the fixing member 31 and the second shaft portion 332. Further, one end of the elastic member 32 may abut against the fixing member 31 but not be fixed, or may be directly fixed by means such as bonding and welding; the other end of the elastic member 32 may abut against the second shaft portion 332 but not be fixed, or may be directly fixed by means such as bonding and welding, and specific settings may be made according to actual requirements, and the embodiments of the present application do not make specific limitations thereto.

[0054] Optionally, the elastic member 32 may be a spring or a spring sheet, etc., and specific settings may be made according to actual requirements, and the present application does not make specific limitations thereto.

[0055] Optionally, the cross-sectional shape of the shaft sleeve 34 may be an isosceles trapezoid or an isosceles triangle, etc., and specific settings may be made according to actual requirements, and the embodiments of the present application do not make specific limitations thereto.

[0056] Optionally, the cross-sectional shape of the second shaft portion 332 may be an isosceles trapezoid or an isosceles triangle, and specific settings may be made according to actual requirements, and the embodiments of the present application do not make specific limitations thereto.

[0057] In the embodiments of the present application, as Figure 5 and Figure 6 shown, at least a part of the second shaft portion 332 is embedded in the shaft sleeve 34, and under the resilience of the elastic member 32, in combination with Figure 8 and Figure 9 , after abrasion occurs between the second shaft portion 332 and the shaft sleeve 34, automatic compensation can be performed, so that the shaft sleeve 34 and the second shaft portion 332 always maintain a pressed state, and after long-term use, the feel equivalent to the initial state can be continuously maintained, the damping effect of the hinge device can be improved, and the folding experience of the electronic device can be enhanced.

[0058] Optionally, the radial dimension of the second shaft portion 332 gradually decreases along the first direction, and the cross-sectional area of the shaft sleeve 34 gradually decreases along the first direction, so that the shaft sleeve 34 and the second shaft portion 332 can be arranged in the same direction, which is convenient for the second shaft portion 332 and the shaft sleeve 34 to always maintain a pressed state, thereby ensuring the damping effect of the hinge device.

[0059] Optionally, the elastic member 32 abuts against the fixing member 31 and the second shaft portion 332 respectively. After wear occurs between the bushing 34 and the second shaft portion 332, the elastic member 32 can squeeze the second shaft portion 332 and drive the first shaft portion 331 to slide in the first direction on the fixing member 31, so that the bushing 34 and the second shaft portion 332 remain tightly pressed.

[0060] Optionally, through holes may be provided in the fixing member 31; the first shaft portion 331 may pass through the through holes and be slidably connected to the through holes in the first direction. The through holes and the first shaft portion 331 are in a limiting fit in a plane perpendicular to the first direction, so that the first shaft portion 331 can move relative to the fixing member 31 in the first direction and the movement of the first shaft portion 331 in its circumferential direction is restricted.

[0061] In the embodiment of the present application, the first shaft portion 331 passes through the through holes and is slidably connected to the through holes in the first direction, which facilitates the compensation between the second shaft portion 332 and the bushing 34 under the elastic action of the elastic member 32. The through holes and the first shaft portion 331 are in a limiting fit in a plane perpendicular to the first direction, so that the first shaft portion 331 can only be slidably connected to the through holes in the first direction, which can prevent the first shaft portion 331 from rotating around the first direction and improve the reliability of the rotational connection between the bushing 34 and the second shaft portion 332.

[0062] Optionally, the cross-sectional shape of the first shaft portion 331 includes at least one of: oval, rectangular, trapezoidal, and triangular.

[0063] In the embodiment of the present application, the cross-sectional shape of the first shaft portion 331 includes at least one of oval, rectangular, trapezoidal, and triangular, which can improve the reliability of the limiting fit between the through holes and the first shaft portion 331 in a plane perpendicular to the first direction.

[0064] Optionally, the cross-sectional shape of the first shaft portion 331 may be any one of oval, rectangular, trapezoidal, and triangular, or a combined shape of at least two of them, for example: a combined shape of rectangular and triangular, a combined shape of rectangular and trapezoidal, etc. Specifically, it can be set according to actual needs, and the embodiment of the present application does not make specific limitations in this regard.

[0065] Optionally, the cross-sectional shape of the first shaft portion 331 includes at least one of: oval, rectangular, trapezoidal, and triangular, which can effectively ensure that the first shaft portion 331 drives the second shaft portion 332 to move relative to the fixing member 31 in the first direction and can prevent the first shaft portion 331 from driving the second shaft portion 332 to rotate around the first direction relative to the fixing member 31.

[0066] Optionally, the first shaft portion 331 is correspondingly arranged with the through holes. For example: Figure 7As shown, when the cross-sectional shape of the first shaft portion 331 is oval, the corresponding through-hole is an oval hole; when the cross-sectional shape of the first shaft portion 331 is rectangular, the corresponding through-hole is a rectangular hole; when the cross-sectional shape of the first shaft portion 331 is trapezoidal, the corresponding through-hole is a trapezoidal hole; when the cross-sectional shape of the first shaft portion 331 is triangular, the corresponding through-hole can be a triangular hole.

[0067] Optionally, the radial dimension of the first shaft portion 331 is smaller than the radial dimension of the second shaft portion 332. The elastic member 32 can be sleeved on the first shaft portion 331, and the elastic member 32 can be in a compressed state.

[0068] In the embodiment of the present application, the radial dimension of the first shaft portion 331 is smaller than the radial dimension of the second shaft portion 332, which facilitates the elastic member 32 to be sleeved outside the first shaft portion 331 and ensures that both ends of the elastic member 32 are respectively in contact with the fixing member 31 and the second shaft portion 332. The elastic member 32 is in a compressed state. In the case of wear between the shaft sleeve 34 and the second shaft portion 332, the elastic member 32 can drive the second shaft portion 332 to move in the first direction in time, realizing compensation between the second shaft portion 332 and the shaft sleeve 34.

[0069] Optionally, in combination Figure 10 and Figure 11 As shown, a first magnetic member 41 can be provided on the surface of the shaft sleeve 34 opposite to the second shaft portion 332, and a second magnetic member 42 can be provided on the surface of the second shaft portion 332 opposite to the shaft sleeve 34; the second magnetic member 42 can cover the circumference of the second shaft portion 332; the second magnetic member 42 and the first magnetic member 41 can be opposite and have opposite polarities.

[0070] In the embodiment of the present application, the second magnetic member 42 and the first magnetic member are opposite and have opposite polarities, and the second magnetic member 42 covers the circumference of the second shaft portion 332. In this way, during the relative rotation of the shaft sleeve 34 and the rotating shaft 33, it is necessary to overcome the magnetic force between the first magnetic member 41 and the second magnetic member 42, and thus damping can be generated.

[0071] Optionally, as Figure 12 shown, at least part of the shaft sleeve 34 and the second shaft portion 332 are spaced apart, which can reduce the contact friction between the first magnetic member 41 and the second magnetic member 42. In this way, using the magnetic force between the first magnetic member 41 and the second magnetic member 42 to generate damping can reduce physical wear, and thus avoid reducing the damping effect as the number of folding times increases.

[0072] Optionally, the first magnetic member 41 and the second magnetic member 42 have opposite magnetic polarities. For example, the magnetic pole of the first magnetic member 41 is the S pole, and the corresponding magnetic pole of the second magnetic member 42 is the N pole; the magnetic pole of the first magnetic member 41 is the N pole, and the corresponding magnetic pole of the second magnetic member 42 is the S pole.

[0073] Optionally, the first magnetic member 41 may be a magnet, and the corresponding second magnetic member 42 may be a magnetic metal member; alternatively, the first magnetic member 41 may be a magnetic metal member, and the corresponding second magnetic member 42 may be a magnet. Specifically, it can be set according to actual requirements, and the embodiments of the present application do not make specific limitations on this.

[0074] Optionally, the first magnetic member 41 may have an annular structure so that the first magnetic member 41 is disposed along the inner circumference of the bushing 34. Or, as Figure 13 and Figure 14 shown, the first magnetic member 41 may also have a strip-shaped structure so that the first magnetic member 41 is only disposed in a partial area of the bushing 34. In this case, the first magnetic member 41 may include one or at least two magnets.

[0075] Optionally, as Figure 15 shown, the second magnetic member 42 may have an annular structure to facilitate the circumferential arrangement of the second magnetic member 42 along the second shaft portion 332.

[0076] Furthermore, the second magnetic member 42 is circumferentially arranged along the second shaft portion 332. In this way, when the bushing 34 rotates relative to the rotating shaft 33 to any position, the magnetic force between the first magnetic member 41 and the second magnetic member 42 needs to be overcome, thereby generating damping at different positions.

[0077] Optionally, the second magnetic member 42 may include a first magnetic portion and a second magnetic portion; the first magnetic portion and the second magnetic portion may be circumferentially arranged along the second shaft portion; the attraction force generated by the first magnetic portion on the first magnetic member 41 is greater than the attraction force generated by the second magnetic portion on the first magnetic member 41.

[0078] In the embodiments of the present application, the first magnetic portion and the second magnetic portion are circumferentially arranged along the second shaft portion, and the attraction force generated by the first magnetic portion on the first magnetic member 41 is greater than the attraction force generated by the second magnetic portion on the first magnetic member 41. In this way, when the bushing 34 rotates relative to the rotating shaft 33 to different positions, the magnetic force between the second magnetic member 42 and the first magnetic member 41 is different, thereby different damping can be generated at different positions.

[0079] Optionally, the first magnetic portion and the second magnetic portion are circumferentially arranged along the second shaft portion 332, and the thickness of the first magnetic portion is greater than the thickness of the second magnetic portion, so that the thicknesses of the first magnetic portion and the second magnetic portion are different, and the second magnetic member 42 may have an unequal-diameter annular structure.

[0080] Optionally, the first magnetic part and the second magnetic part can be arranged circumferentially along the second shaft part 332; the length of the first magnetic part along the axis of the second shaft part 332 is the first length, the length of the second magnetic part along the axis of the second shaft part 332 can be the second length, and the length of the first magnetic part 41 along the axis of the second shaft part 332 can be the third length; the first length can be greater than the second length and less than or equal to the third length, so that the magnetic forces generated by the first magnetic part and the second magnetic part on the first magnetic part 41 are different, and different damping can be generated at different positions.

[0081] Optionally, the first magnetic part and the second magnetic part can be an integrally formed structure, or the first magnetic part and the second magnetic part can also be arranged at intervals, which can be specifically set according to actual needs, and the embodiments of the present application do not make specific limitations on this.

[0082] Optionally, as Figure 16 and Figure 17 shown, a receiving groove can be dug on the surface of the second shaft part 332 opposite to the shaft sleeve 34; the receiving groove is arranged circumferentially along the second shaft part 332, and a viscous fluid 6 can be filled in the receiving groove; the shaft sleeve 34 can cover the receiving groove and can be in contact with the viscous fluid 6.

[0083] In the embodiment of the present application, the receiving groove is arranged circumferentially along the second shaft part 332 and filled with the viscous fluid 6, and the shaft sleeve 34 covers the receiving groove and the shaft sleeve 34 is in contact with the viscous fluid 6. In this way, during the rotation of the shaft sleeve 34 relative to the rotating shaft 33, the viscous force of the viscous fluid 6 needs to be overcome to generate damping. Damping is generated by the viscous force of the viscous fluid 6, which can reduce physical wear, reduce material wear, and effectively ensure the damping effect.

[0084] Optionally, as Figure 16 and Figure 17 shown, the opening of the receiving groove can be sealed with a sealing ring 5, so that when there is a gap between the shaft sleeve 34 and the second shaft part 332, the leakage of the viscous fluid 6 in the receiving groove can be avoided.

[0085] Optionally, the receiving groove can include a first receiving groove and a second receiving groove; the first receiving groove and the second receiving groove can be arranged circumferentially along the second shaft part 332 and the first receiving groove and the second receiving groove are communicated; the viscous fluid 6 in the first receiving groove generates a first damping force on the shaft sleeve 34, and the viscous fluid 6 in the second receiving groove generates a second damping force on the shaft sleeve 34, and the first damping force is greater than the second damping force.

[0086] In the embodiment of the present application, the first receiving groove and the second receiving groove are arranged along the circumferential direction of the second shaft portion 332, and the first damping force is greater than the second damping force. In this way, during the rotation of the sleeve 34 relative to the rotating shaft 33, at different positions, the adhesive force received by the sleeve 34 is different, so that different damping can be generated at different positions.

[0087] Optionally, the length of the first receiving groove in the first direction is greater than the length of the second receiving groove in the first direction to achieve that the first damping force is greater than the second damping force.

[0088] In a further embodiment of the present application, as Figure 18 and Figure 19 shown, the sleeve 34 may be provided with a mounting hole, and the damping mechanism 3 may further include an insert 7; the insert 7 may be embedded in the mounting hole and may be in contact with the viscous fluid 6; the adhesive force between the insert 7 and the viscous fluid 6 may be greater than the adhesive force between the sleeve 34 and the viscous fluid 6.

[0089] In the embodiment of the present application, the adhesive force between the insert 7 and the viscous fluid 6 is greater than the adhesive force between the sleeve 34 and the viscous fluid 6. In this way, during the rotation of the sleeve 34 relative to the rotating shaft 33, the main damping may come from the adhesive force between the insert 7 and the viscous fluid 6, so that different damping can be generated at different positions.

[0090] Optionally, the insert 7 may be correspondingly arranged with the mounting hole. For example, the insert 7 may be a cube structure, and the corresponding mounting hole may be a rectangular hole; the insert 7 may be a cylindrical structure, and the corresponding mounting hole may be a circular hole, etc., which can be specifically set according to actual needs, and the embodiment of the present application does not make specific limitations on this.

[0091] Optionally, the area where the sleeve 34 contacts the viscous fluid 6 may also be polished to reduce the adhesive force between the sleeve and the viscous fluid 6.

[0092] Optionally, the hinge device may further include a synchronous gear set 81. The swing arm 1 may include a first swing arm 11 and a second swing arm 12. The damping mechanism 3 may include a first damping mechanism and a second damping mechanism; the first swing arm 11 and the second swing arm 12 may be respectively arranged on opposite sides of the substrate 2, the first swing arm 11 is correspondingly arranged with the first damping mechanism, and the second swing arm 11 is correspondingly arranged with the second damping mechanism; the first swing arm 11 and the second swing arm 12 may both be connected to the synchronous gear set 81 to achieve synchronous and reverse rotation of the first swing arm 11 and the second swing arm 12.

[0093] In the embodiment of the present application, the first swing arm 11 and the second swing arm 12 are respectively arranged on opposite sides of the substrate 2. The first swing arm 11 is correspondingly arranged with the first damping mechanism, so that the first swing arm 11 can be rotatably connected to the substrate 2 through the first damping mechanism; the second swing arm 12 is correspondingly arranged with the second damping mechanism, so that the second swing arm 12 can be rotatably connected to the substrate 2 through the second damping mechanism; the first swing arm 11 and the second swing arm 12 are both connected to the synchronous gear set 81, and the synchronous rotation and reverse rotation of the first swing arm 11 and the second swing arm 12 can be realized, thereby accelerating the relative folding speed of the first swing arm 11 and the second swing arm 12.

[0094] Optionally, during the rotation of the first swing arm 11, friction can be generated between the second shaft portion 332 and the shaft sleeve 34 in the first damping mechanism, thereby generating damping; friction can be generated between the second shaft portion 332 and the shaft sleeve 34 in the second damping mechanism, thereby generating damping.

[0095] Optionally, the hinge device may further include a fixed seat, a first connecting shaft 85, a second connecting shaft 86, a first gear 82 and a second gear 83; the first connecting shaft 85 is inserted through the fixed seat and can be rotatably connected to the fixed seat. Optionally, the first gear 82 is meshed and connected to the synchronous gear set 81, and the second gear 83 is meshed and connected to the synchronous gear set 81, which can drive the first swing arm 11 and the second swing arm 12 to rotate synchronously and in the opposite direction.

[0096] Optionally, the first connecting shaft 85 is fixedly connected to the first gear 82 and fixedly connected to the first swing arm 11, so that the first swing arm 11 can drive the first gear 82 to rotate through the first connecting shaft 85.

[0097] Optionally, the second connecting shaft 86 is fixedly connected to the second gear 83 and fixedly connected to the second swing arm 12, so that the second swing arm 12 can drive the second gear 83 to rotate through the second connecting shaft 86.

[0098] Optionally, the fixing member 31 may include a first fixing member 311 and a second fixing member 312. The first fixing member 311 and the second fixing member 312 may be provided with through holes relatively. The rotating shaft 33 may further include a third shaft portion 333; the first fixing member 311 and the second fixing member 312 may be arranged at intervals, and the second shaft portion 332 may be arranged between the first fixing member 311 and the second fixing member 312; the first shaft portion 331 and the third shaft portion 333 may be symmetrically arranged at both ends of the second shaft portion 332, and the first shaft portion 331 and the third shaft portion 333 respectively pass through the through holes of the first fixing member 311 and the second fixing member 312.

[0099] In an embodiment of the present application, the first fixing member 311 and the second fixing member 312 are spaced apart. The second shaft portion 332 is disposed between the first fixing member 311 and the second fixing member 312. The first shaft portion 331 and the third shaft portion 333 are symmetrically disposed at both ends of the second shaft portion 332. The first shaft portion 331 and the second shaft portion 332 respectively pass through the through holes of the first fixing member 311 and the second fixing member 312, so that the first fixing member 311 can limit the first shaft portion 331, and the second fixing member 312 can limit the third shaft portion 333, which can further improve the reliability of the rotational connection between the bushing 34 and the second shaft portion 332.

[0100] Optionally, the first shaft portion 331, the second shaft portion 332, and the third shaft portion 333 may be integrally formed, or the first shaft portion 331 and the third shaft portion 332 may be fixed to the second shaft portion 332 by means of bonding, welding, or bolt connection, etc., and may be specifically set according to actual requirements. The embodiments of the present application do not make specific limitations on this.

[0101] Optionally, the first fixing member 311 and the second fixing member 312 may be symmetrically disposed along the first direction. When the first shaft portion 331 slides along the first direction in the through hole of the first fixing member 311, the third shaft portion 333 may slide along the first direction in the through hole of the second fixing member 312.

[0102] The hinge device described in the embodiments of the present application has at least the following advantages:

[0103] In an embodiment of the present application, two ends of the elastic member respectively abut against the fixing member and the second shaft portion. The bushing is sleeved outside the second shaft portion and is rotationally connected to the second shaft portion. Since the radial dimension of the second shaft portion gradually decreases along the first direction, and the first direction is the direction from the first shaft portion to the second shaft portion, in this way, after wear occurs in the rotational friction between the rotating shaft and the bushing, the first shaft portion can be slidably connected to the fixing member along the first direction, and the elastic member can squeeze the second shaft portion, so that the rotating shaft and the bushing can always be pressed tightly, and thus an automatic compensation mechanism can be formed to always maintain a good damping effect. Further, after applying the hinge device to an electronic device, the use feel of the electronic device can be improved, and the user experience can be enhanced.

[0104] In a second aspect, an embodiment of the present application further discloses an electronic device, which may include a first housing 201, a second housing 202, and the above hinge device; the first housing 201 and the second housing 202 may be rotationally connected through the hinge device. When the first housing 201 and the second housing 202 rotate relative to each other, the electronic device switches between an unfolded state and a folded state.

[0105] In the embodiments of the present application, the electronic devices include, but are not limited to, mobile phones, tablet computers, laptop computers, or smart wearable devices, etc.

[0106] Optionally, the first housing 201 and the second housing 202 may be fixedly connected to the swing arm 1. When the first housing 201 and the second housing 202 are unfolded relative to each other, the swing arm 1 can be driven to unfold relative to the substrate 2; when the first housing 201 and the second housing 202 are folded relative to each other, the swing arm 1 can be driven to fold relative to the substrate 2.

[0107] Exemplarily, the electronic device may include a first housing 201 and a second housing 202; the swing arm 1 may be fixedly connected to the first housing 201, and the substrate 2 may be fixedly connected to the second housing 202, so as to realize the relative rotation of the first housing 201 and the second housing 202 through the rotational connection of the rotating shaft 33 and the sleeve 34, and further realize the folding function of the electronic device.

[0108] Or, as Figure 3 and Figure 4 shown, the swing arm 1 may include a first swing arm 11 and a second swing arm 12; the first swing arm 11 and the second swing arm 12 are respectively arranged on both sides of the substrate 2, the first swing arm 11 is fixedly connected to the first housing 201, and the second swing arm 12 is fixedly connected to the second housing 202. In this way, when the rotating shaft 33 and the sleeve 34 rotate relative to each other, the first swing arm 11 and the second swing arm 12 both rotate relative to the substrate 2, so that both the first housing 201 and the second housing 202 can rotate relative to the substrate 2, and further realize the folding function of the electronic device.

[0109] The electronic devices described in the embodiments of the present application have at least the following advantages:

[0110] In the embodiments of the present application, two ends of the elastic member are respectively abutted against the fixing member and the second shaft portion, the sleeve is sleeved outside the second shaft portion and is rotationally connected to the second shaft portion. Since the radial dimension of the second shaft portion gradually decreases along the first direction, and the first direction is the direction from the first shaft portion to the second shaft portion, in this way, after wear occurs in the rotational friction between the rotating shaft and the sleeve, the first shaft portion can be slidably connected to the fixing member along the first direction, and the elastic member can squeeze the second shaft portion, so that the rotating shaft and the sleeve can always be pressed tightly, and further an automatic compensation mechanism can be formed to always maintain a good damping effect. Further, after applying the hinge device to the electronic device, the use feel of the electronic device can be improved, and the user experience can be enhanced.

[0111] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc., mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0112] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A hinge device, characterized in that, Comprising: A swing arm, a substrate, and a damping mechanism; The damping mechanism includes: a fixing member, an elastic member, a rotating shaft, and a bushing. The fixing member is fixedly arranged on the substrate; Wherein, the rotating shaft includes a first shaft portion and a second shaft portion. The first shaft portion is slidably connected to the fixing member along a first direction. The radial dimension of the second shaft portion gradually decreases along the first direction. The first direction is the direction from the first shaft portion towards the second shaft portion; The elastic member is arranged between the fixing member and the second shaft portion. Two ends of the elastic member are respectively abutted against the fixing member and the second shaft portion; The bushing is sleeved on the second shaft portion and can rotate relative to the rotating shaft. The bushing is fixedly connected to the swing arm. During the rotation of the bushing relative to the rotating shaft, the swing arm rotates relative to the substrate; A receiving groove is arranged on the surface of the second shaft portion opposite to the bushing; The receiving groove includes a first receiving groove and a second receiving groove; The first receiving groove and the second receiving groove are arranged along the circumferential direction of the second shaft portion, and the first receiving groove and the second receiving groove are communicated; The viscous fluid in the first receiving groove generates a first damping force on the bushing, and the viscous fluid in the second receiving groove generates a second damping force on the bushing. The first damping force is greater than the second damping force.

2. The hinge device according to claim 1, characterized in that, A through hole is arranged on the fixing member; The first shaft portion passes through the through hole and is slidably connected to the through hole along the first direction. The through hole and the first shaft portion are limited and matched in a plane perpendicular to the first direction, so that the first shaft portion can move relative to the fixing member in the first direction and the circumferential movement of the first shaft portion is restricted.

3. The hinge device according to claim 2, characterized in that, The cross-sectional shape of the first shaft portion includes at least one of an ellipse, a rectangle, a trapezoid, and a triangle.

4. The hinge device according to claim 1, wherein, The radial dimension of the first shaft portion is smaller than the radial dimension of the second shaft portion. The elastic member is sleeved on the first shaft portion, and the elastic member is in a compressed state.

5. The hinge device according to claim 1, characterized in that, A first magnetic member is arranged on the surface of the bushing opposite to the second shaft portion, and a second magnetic member is arranged on the surface of the second shaft portion opposite to the bushing; The second magnetic member covers the circumferential direction of the second shaft portion; The second magnetic member and the first magnetic member are opposite and have opposite polarities.

6. The hinge device according to claim 5, characterized in that, The second magnetic member includes a first magnetic portion and a second magnetic portion; The first magnetic portion and the second magnetic portion are arranged along the circumferential direction of the second shaft portion; The attraction force generated by the first magnetic portion on the first magnetic member is greater than the attraction force generated by the second magnetic portion on the first magnetic member.

7. The hinge device according to claim 1, characterized in that, The receiving groove is arranged along the circumferential direction of the second shaft portion, and the receiving groove is filled with viscous fluid; The bushing covers the receiving groove and is in contact with the viscous fluid.

8. The hinge device according to claim 1, wherein, An installation hole is arranged on the bushing, and the damping mechanism further includes an insert block; The insert block is embedded in the installation hole and is in contact with the viscous fluid; The adhesive force between the insert block and the viscous fluid is greater than the adhesive force between the bushing and the viscous fluid.

9. The hinge device according to claim 1, characterized in that The hinge device further includes a synchronous gear set. The swing arm includes a first swing arm and a second swing arm. The damping mechanism includes a first damping mechanism and a second damping mechanism. The first swing arm and the second swing arm are respectively arranged on opposite sides of the substrate. The first swing arm is correspondingly arranged with the first damping mechanism, and the second swing arm is correspondingly arranged with the second damping mechanism. Both the first swing arm and the second swing arm are connected to the synchronous gear set to achieve synchronous rotation of the first swing arm and the second swing arm.

10. The hinge device according to claim 2, characterized in that, The fixing member includes a first fixing member and a second fixing member. The first fixing member and the second fixing member are relatively provided with the through holes. The rotating shaft further includes a third shaft portion. The first fixing member and the second fixing member are arranged at intervals, and the second shaft portion is arranged between the first fixing member and the second fixing member. The first shaft portion and the third shaft portion are symmetrically arranged at both ends of the second shaft portion. The first shaft portion and the third shaft portion respectively pass through the through holes of the first fixing member and the second fixing member.

11. An electronic device, characterized in that, It includes a first housing, a second housing and the hinge device according to any one of claims 1-10. The first housing and the second housing are rotationally connected through the hinge device. When the first housing and the second housing rotate relative to each other, the electronic device switches between the unfolded state and the folded state.

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