Flexible constant-rigidity mechanism, rotating shaft device and terminal equipment

Abstract

The embodiment of the invention relates to the technical field of electronic equipment, and provides a compliant constant-rigidity mechanism, a rotating shaft device and terminal equipment. The compliant constant-rigidity mechanism comprises at least one sheet-shaped compliant constant-rigidity body; the flexible constant-rigidity body comprises a first force exerting part, a second force exerting part spaced from the first force exerting part, and a deformation part located between the first force exerting part and the second force exerting part and connected to the first force exerting part and the second force exerting part. The side, back to the deformation part, of the first force exerting part is used for being connected with an external object, and the side, back to the deformation part, of the second force exerting part is used for being connected with the external object. The deformation part, the first force exerting part and the second force exerting part are located in a first plane, and the deformation part can elastically deform in the first plane. Compared with the prior art, the flexible constant-rigidity body provided by the embodiment of the invention is of a sheet structure, and compared with a spring, the flexible constant-rigidity body can provide larger elastic force under the condition of the same thickness, so that the light and thin design of the applied device is facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a compliant constant stiffness mechanism, a rotating shaft device and a terminal device. Background Art

[0002] In a device that needs to realize a rotation function, there is a case where a damping mechanism is used to provide a damping force, so that the device has a certain resistance or torque during the rotation process. The damping mechanism often uses a spiral spring to provide elastic force, thereby providing a damping force.

[0003] For example, in foldable electronic devices that can be folded and unfolded (such as foldable mobile phones, foldable tablets, foldable computers, etc.), a damping mechanism is usually provided on the hinge device. The damping mechanism usually uses a spring to provide elastic force so that the foldable electronic device has a certain damping force during the folding and unfolding process, which is beneficial to improve stability and user operation feel.

[0004] However, the thickness of the spring is relatively large, and it is difficult to provide sufficient elastic force and achieve the desired damping effect in the case of a smaller size. Therefore, the size of the spring usually needs to be set larger, which results in a larger space being occupied and affects the lightweight design of the device to which it is applied. Summary of the invention

[0005] The embodiments of the present application provide a compliant constant stiffness mechanism, a rotating shaft device and a terminal device, which can improve the technical problem that the spring occupies a large space and the device used is difficult to achieve lightness and thinness.

[0006] To achieve the above purpose, the embodiment of the present application adopts the following technical solution:

[0007] In a first aspect, an embodiment of the present application provides a compliant constant stiffness mechanism, wherein the compliant constant stiffness mechanism comprises at least one sheet-shaped compliant constant stiffness body, wherein the compliant constant stiffness body comprises:

[0008] The first force part;

[0009] A second force-bearing portion, spaced apart from the first force-bearing portion; and

[0010] A deformation portion, located between the first force-applying portion and the second force-applying portion, and connected to the first force-applying portion and the second force-applying portion;

[0011] Among them, the side of the first force part facing away from the deformation part is used to connect with an external object, and the side of the second force part facing away from the deformation part is used to connect with an external object; the deformation part, the first force part and the second force part are in a first plane, so that when the first force part moves toward or away from the second force part, the deformation part can undergo elastic deformation in the first plane.

[0012] The above technical solutions in the embodiments of the present application have at least the following technical effects or advantages:

[0013] The compliant constant stiffness mechanism provided in the embodiment of the present application includes at least one compliant constant stiffness body, which is a sheet-like structure. Compared with a spring, the compliant constant stiffness body can provide greater elastic force at the same thickness, thereby reducing space occupation and facilitating the thin and light design of the device used. Since the deformation portion can be elastically deformed between the first force-applying portion and the second force-applying portion and located in the first plane, it is convenient to provide elastic force between two external objects connected to the first force-applying portion and the second force-applying portion respectively.

[0014] In some embodiments of the first aspect, the direction from the first force-applying portion toward the second force-applying portion is a first direction, and the deformation portion includes a plurality of deformation structures sequentially connected along the first direction.

[0015] In some embodiments of the first aspect, the deformation portion further includes a plurality of connection structures, and the connection structure is used to connect two adjacent deformation structures.

[0016] In some embodiments of the first aspect, the deformation structure includes two first elastic segments arranged at intervals along the first direction and two second elastic segments connected to the free ends of the two first elastic segments, and each of the first elastic segments and each of the second elastic segments enclose a first deformation space.

[0017] In some embodiments of the first aspect, the second elastic segment is bent at least once in a second direction, and the second direction is perpendicular to the first direction.

[0018] In some embodiments of the first aspect, the deformation structure includes at least two first support members, two second support members and a plurality of first connecting members, each of the first support members extends along the first direction and is arranged at intervals, two second support members extend along the first direction and are located on opposite sides of each of the first support members, the opposite ends of each of the first connecting members are respectively connected to adjacent first support members and second support members, and two adjacent first connecting members and the corresponding two first support members enclose a second deformation space.

[0019] In some embodiments of the first aspect, the direction of the first force portion toward the second force portion is a first direction, the deformation portion includes at least two third support members and a plurality of second connecting members, each of the third support members extends along the first direction and is arranged at intervals along the second direction, the opposite ends of each of the second connecting members are connected to two adjacent third support members, two adjacent second connecting members and the corresponding two third support members enclose a third deformation space, and the second direction is perpendicular to the first direction.

[0020] In some embodiments of the first aspect, the number of the third supporting members is two, and the extending direction of each of the second connecting members is parallel to the second direction.

[0021] In some embodiments of the first aspect, the number of the third support members is three, two of which are arranged at intervals along the first direction, the third of which is arranged at intervals along the second direction along the first direction, and the third of which is arranged at intervals from the first two of which are arranged along the second direction, and the extension direction of each of the second connecting members is parallel to the second direction.

[0022] In some embodiments of the first aspect, the number of the third support members is four, two of which are arranged at intervals along the first direction, and the other two of the third support members are located on opposite sides of the first two third support members along the second direction, and the extension direction of each of the second connecting members forms an acute angle with the second direction.

[0023] In some embodiments of the first aspect, the number of the third support members is four, two of which are arranged at intervals along the first direction, and the other two of the third support members are located on opposite sides of the first two third support members along the second direction, and each of the second connecting members is bent at least three times in the second direction.

[0024] In some embodiments of the first aspect, the first force-carrying portion includes any one or both of a block body and a plate body; and / or the second force-carrying portion includes any one or both of a block body and a plate body.

[0025] In a second aspect, an embodiment of the present application provides a rotating shaft device, comprising:

[0026] It includes a rotating shaft mechanism and a damping mechanism, the rotating shaft mechanism includes a first supporting structure and a second supporting structure that rotate relative to each other, at least one damping mechanism is provided on each of the first supporting structure and the second supporting structure, the damping mechanism includes a damping member, a damping swing arm and the above-mentioned flexible constant stiffness body, the damping swing arm is slidably connected to the damping member, and is configured so that when the first supporting structure and the second supporting structure rotate relative to each other, the damping swing arm moves relative to the damping member, and the flexible constant stiffness body undergoes elastic deformation when the damping member slides relative to the damping swing arm.

[0027] In some embodiments of the second aspect, the damping mechanism also includes a cam stopper provided on the damping swing arm, and the first force-bearing portion and the second force-bearing portion of the compliant constant stiffness body are used to abut and adapt to the cam stopper, and the cam stopper presses against and squeezes the first force-bearing portion and the second force-bearing portion when the damping swing arm rotates relative to the damping member, so that the deformation portion of the compliant constant stiffness body undergoes elastic deformation.

[0028] In some embodiments of the second aspect, the side wall of the damping swing arm facing the first force portion or the second force portion of the flexible constant stiffness body has a plurality of first abutment surfaces, each of the first abutment surfaces forms a different angle with the sliding direction of the damping swing arm, the damping swing arm is slidably arranged relative to the damping member, and the first force portion or the second force portion of the flexible constant stiffness body is configured to abut against different first abutment surfaces so that the deformation portion of the flexible constant stiffness body undergoes elastic deformation.

[0029] In some embodiments of the third aspect, the side wall of the damping swing arm facing the first force portion or the second force portion of the flexible constant stiffness body has a second abutment surface, the second abutment surface forms an acute angle with the sliding direction of the damping swing arm, the damping swing arm is slidably arranged relative to the damping member, and the first force portion or the second force portion of the flexible constant stiffness body is configured to abut against different second abutment surfaces to cause the deformation portion of the flexible constant stiffness body to undergo elastic deformation.

[0030] In a third aspect, an embodiment of the present application provides a terminal device, the terminal device comprising:

[0031] The rotating shaft device described in the second aspect above;

[0032] The first shell and the second shell are rotatably connected via the rotating shaft device; and

[0033] The folding screen is arranged on the first shell and the second shell.

[0034] It can be understood that the beneficial effects of the second and third aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic diagram of the three-dimensional structure of a terminal device provided in some embodiments of the present application;

[0036] Figure 2 A schematic diagram of the structure of the rotating shaft device provided in Example 1 of the present application;

[0037] Figure 3 for Figure 2 A partial schematic diagram of the rotating shaft device in FIG.

[0038] Figure 4 A schematic diagram of the structure of the rotating shaft device provided in the second embodiment of the present application;

[0039] Figure 5 for Figure 4 A partial schematic diagram of the rotating shaft device in FIG.

[0040] Figure 6 A partial schematic diagram of a rotating shaft device provided in Embodiment 3 of the present application;

[0041] Figure 7 A schematic diagram of the structure of the first compliant constant stiffness mechanism provided in Example 1 of the present application;

[0042] Figure 8 A schematic diagram of the structure of a second compliant constant stiffness mechanism provided in Example 1 of the present application;

[0043] Fig. 9 A schematic diagram of the structure of a compliant constant stiffness mechanism provided in Example 2 of the present application;

[0044] Fig.10 A schematic diagram of the structure of a compliant constant stiffness mechanism provided in Example 3 of the present application;

[0045] Fig.11 A schematic diagram of the structure of a compliant constant stiffness mechanism provided in Example 4 of the present application;

[0046] Fig.12 A schematic diagram of the structure of a compliant constant stiffness mechanism provided in Example 5 of the present application;

[0047] Fig.13 A schematic diagram of the structure of a compliant constant stiffness mechanism provided in Example 6 of the present application.

[0048] Among them, the reference numerals in the figure are:

[0049] 100, flexible constant stiffness mechanism; 10, flexible constant stiffness body; 11, first force-applying part; 12, second force-applying part; 13, deformation part; 131, deformation structure; 132, connection structure; 1311, first elastic section; 1312, second elastic section; 13a, first deformation space; 1313, first support member; 1314, second support member; 1315, first connection member; 13b, second deformation space; 1316, third support member; 1317, second connection member; 13c, third deformation space;

[0050] 1000, rotating shaft device;

[0051] 200, rotating shaft mechanism; 201, first supporting structure; 202, second supporting structure;

[0052] 300, damping mechanism; 301, damping member; 302, damping swing arm; 303, cam stopper; 3021, first abutting surface; 3022, second abutting surface;

[0053] 10000, terminal device; 2000, first housing; 3000, second housing; 4000, folding screen; 4100, foldable portion;

[0054] X, first direction; Y, second direction. DETAILED DESCRIPTION

[0055] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0056] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0057] In the description of the present application, it should be understood that the terms "length", "width", "thickness", "top", "bottom", "inside", "outside", "upper", "lower", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are 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 therefore should not be understood as a limitation on the present application.

[0058] The terms "first", "second", "third", "fourth", "fifth", "sixth", etc. are only used to distinguish descriptions, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. For example, the first deformation space and the second deformation space are only used to distinguish different deformation spaces, and their order is not limited. The first deformation space can also be named as the second deformation space, and the second deformation space can also be named as the first deformation space without departing from the scope of the various described embodiments. In addition, the terms "first", "second", etc. do not limit the indicated features to be necessarily different.

[0059] In this application, unless otherwise clearly specified and limited, the terms "connected", "connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0060] In this application, "and / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships; for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0061] It should be noted that, in this application, words such as "in some embodiments", "exemplarily", "for example", etc. are used to indicate examples, illustrations or descriptions. Any embodiment or design described in this application as "in some embodiments", "exemplarily", "for example" should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "in some embodiments", "exemplarily", "for example", etc. is intended to present related concepts in a specific way.

[0062] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0063] In devices that need to realize the rotation function (such as foldable electronic devices, folding doors, sliding doors, etc.), there are cases where a damping mechanism is used to provide a damping force, so that the device has a certain resistance or torque during the rotation process. The damping mechanism often uses a spiral spring to provide elastic force to obtain a squeezing force, and then provide a damping force.

[0064] For example, in foldable electronic devices that can be folded and unfolded (such as foldable mobile phones, foldable tablets, foldable computers, laptops, etc.), a damping mechanism is usually provided on the hinge device. The damping mechanism usually uses a spring to provide elastic force or extrusion force so that the foldable electronic device has a certain damping force during the folding and unfolding process, which is beneficial to improve the stability of the foldable electronic device in different states and the user's operating feel.

[0065] However, since the spring is in a spiral shape, it is limited by the structure and has a relatively large thickness, that is, a relatively large outer diameter. In the case of a smaller size, it is difficult to provide sufficient elastic force and to achieve the desired damping effect. Therefore, the size of the spring usually needs to be set larger, which results in occupying a larger space of the device to which it is applied, affecting the thin and light design of the device to which it is applied. For example, the spring makes the overall thickness of the hinge device of the foldable electronic device larger, thereby affecting the thin and light design of the foldable electronic device.

[0066] In view of this, an embodiment of the present application provides a flexible constant stiffness mechanism, including a rotating shaft device of the flexible constant stiffness mechanism and a terminal device including the rotating shaft device, which can improve the technical problem in the related technology that the spring occupies a large space and affects the lightweight design of the applied device (such as the terminal device), and is conducive to providing sufficient elastic force while reducing the space occupied.

[0067] The terminal device provided in the embodiment of the present application belongs to a foldable electronic device, that is, a type of electronic device that can be folded and unfolded. The terminal device can be a mobile phone, a tablet computer, a laptop computer (Laptop), a notebook computer (Notebook PC), a personal digital assistant (Personal Digital Assistant, PDA), a wearable device (such as a watch), a vehicle-mounted device, an augmented reality (Augmented Reality, AR) / virtual reality (Virtual Reality, VR) device, a sales terminal (POS, Point of sales terminal), a driving recorder, a walkie-talkie, a camera, a display, etc., but is not limited thereto.

[0068] See also Figure 1 , Figure 1 The three-dimensional structure diagram of the terminal device 10000 provided in some embodiments of the present application in the unfolded state is shown. In the embodiments of the present application, the terminal device 10000 is taken as a mobile phone as an example for description.

[0069] The terminal device 10000 includes a hinge device 1000, a first shell 2000, a second shell 3000 and a folding screen 4000, wherein:

[0070] The first housing 2000 and the second housing 3000 are rotatably connected via the hinge device 1000. That is, the first housing 2000 and the second housing 3000 can rotate relative to each other based on the hinge device 1000, so that the terminal device 10000 can be relatively close to each other and rotated to be in a folded state, and can be relatively far from each other and rotated to be in an unfolded state. In some cases, the terminal device 10000 can also be in an intermediate state between the unfolded state and the folded state.

[0071] It can be understood that the first shell 2000 and the second shell 3000 can both be middle frames, and the specific shape and structure can be set as needed.

[0072] The folding screen 4000 is arranged on the first shell 2000 and the second shell 3000, and can be folded or unfolded as the first shell 2000 and the second shell 3000 rotate. The position of the foldable portion 4100 of the folding screen 4000 corresponds to the position of the hinge device 1000. The foldable portion 4100 is a portion that can be bent, and has flexibility so that when the first shell 2000 and the second shell 3000 rotate relative to each other, the folding screen 4000 can be folded by bending the foldable portion 4100. When the folding screen 4000 is in a folded state, the foldable portion 4100 can be in a teardrop shape or a U shape, but is not limited to this shape.

[0073] It can be understood that the screen portion of the folding screen 4000 corresponding to the first shell 2000 can be flexible or rigid; the screen portion of the folding screen 4000 corresponding to the second shell 3000 can be flexible or rigid.

[0074] The back side of the folding screen 4000 is the side facing the hinge device 1000, and can also be regarded as the non-display side of the folding screen 4000; the front side of the folding screen 4000 is the side facing away from the hinge device 1000, that is, the display side of the folding screen 4000 for displaying images.

[0075] When the terminal device 10000 is in the unfolded state, the folding screen 4000 is also in the unfolded state, and the first shell 2000 and the second shell 3000 are roughly in the same plane, that is, the angle between the first shell 2000 and the second shell 3000 is roughly 180°. At this time, the folding screen 4000 is roughly flat, so that the terminal device 10000 has a larger display area. It should be understood that when the terminal device 10000 is in the unfolded state, the angle between the first shell 2000 and the second shell 3000 is not limited to an absolute 180°; the angle between the first shell 2000 and the second shell 3000 can also be greater than or less than 180°, but close to 180°, for example, the angle range can be 165° to 190° (for example, 170°, 173°, 175°, 182°, 185°, etc., but not limited thereto), and the unfolding of the folding screen 4000 can also be achieved.

[0076] When the terminal device 10000 is in a folded state, the folding screen 4000 is also in a folded state, and the first shell 2000 and the second shell 3000 are substantially parallel, that is, the angle between the first shell 2000 and the second shell 3000 is substantially 0°. At this time, the folding screen 4000 is folded through its foldable portion 4100 to facilitate the storage of the terminal device 10000. It should be understood that when the terminal device 10000 is in a folded state, it is not limited to the absolute parallelism of the first shell 2000 and the second shell 3000. The angle between the first shell 2000 and the second shell 3000 can also be greater than 0°, but close to 0°. For example, the angle can range from 0° to 15° (for example, 1°, 2°, 3°, 5°, 10°, etc., but not limited thereto), and the folding of the folding screen 4000 can also be achieved.

[0077] In some embodiments, the terminal device 10000 may be an outward-folding terminal device, and the folding screen 4000 is an outward-folding folding screen. Figure 1 After the folding screen 4000 is folded, the display surface of the folding screen 4000 is exposed, and the first shell 2000 and the second shell 3000 are located between the folding screen 4000.

[0078] Of course, in some other embodiments, the terminal device 10000 may also be an inward folding terminal device, and the folding screen 4000 is an inward folding folding screen. After the folding screen 4000 is folded, the folding screen 4000 is located between the first shell 2000 and the second shell 3000.

[0079] Since the folding screen 4000 is a key component in the foldable terminal device 10000, during the process of the terminal device 10000 switching the folding mode between the unfolded state, the folded state and the intermediate state, if the first shell 2000, the second shell 3000 and the hinge device 1000 of the terminal device 10000 cannot provide a stable supporting force for the folding screen 4000, the folding screen 4000 may be pulled or squeezed by an external force, resulting in abnormal display. It can be understood from the introduction of the terminal device 10000 in the above embodiment that the terminal device 10000 needs to rely on the cooperation of the hinge device 1000 to achieve folding. Based on this, a damping component can be set in the hinge device 1000, so that the damping component can provide a damping force for the terminal device 10000 during the process of the terminal device 10000 switching the folding mode, so as to achieve stable support for the folding screen 4000, which is conducive to improving the stability of the terminal device 10000 in different folding modes and the user's operating feel.

[0080] See also Figures 2 to 6 The rotating shaft device 1000 includes a rotating shaft mechanism 200 and a damping mechanism 300. The rotating shaft mechanism 200 includes a first supporting structure 201 and a second supporting structure 202 that rotate relative to each other. At least one damping mechanism 300 is arranged on the first supporting structure 201 and the second supporting structure 202. The damping mechanism 300 includes a damping member 301, a damping swing arm 302 and a flexible constant stiffness body 100. The damping swing arm 302 is slidably connected to the damping member 301, and is configured so that when the first supporting structure 201 and the second supporting structure 202 rotate relative to each other, the damping swing arm 302 moves relative to the damping member 301, and the flexible constant stiffness body 100 undergoes elastic deformation when the damping member 301 slides relative to the damping swing arm 302.

[0081] Here, the first supporting structure 201 and the second supporting structure 202 are used to connect with the first shell 2000 and the second shell 3000 of the terminal device 10000, so that the first shell 2000 and the second shell 3000 can rotate relative to each other and open and close.

[0082] The number of damping mechanisms 300 can be multiple, and multiple damping mechanisms 300 are separately arranged on the first supporting structure 201 or the second supporting structure 202. The damping mechanism 300 located on one side of the first supporting structure 201 can be connected to the first shell 2000 of the terminal device 10000 in the above embodiment, and similarly, the damping mechanism 300 located on the other side of the second supporting structure 202 can be connected to the second shell 3000 of the terminal device 10000 in the above embodiment, so that the damping force generated by the damping mechanism 300 can be transmitted to the corresponding shell, which is conducive to providing reliable support force for the entire terminal device 10000. It can be understood that the damping mechanism 300 and the shell arranged on the same side can be directly contacted and fixed, or the damping mechanism 300 can be fixed to the shell through other possible structures, so as to achieve indirect fixation of the damping mechanism 300 and the shell.

[0083] Specifically, the damping swing arm 302 of the damping mechanism 300 is connected to the corresponding supporting structure, and driven by the corresponding supporting structure, it moves relative to the damping member 301. Here, the relative movement can be that the damping swing arm 302 slides relative to the damping member 301 in a certain direction; or, it can be that the damping swing arm 302 rotates around the axis relative to the damping member 301 in a certain direction. In this way, when the damping swing arm 302 moves relative to the damping member 301, a squeezing force is formed on the compliant constant stiffness body 100, causing it to deform elastically to provide a corresponding damping feeling.

[0084] Please refer to Figure 2 and Figure 3 In some embodiments, the damping mechanism 300 also includes a cam stopper 303 provided on the damping swing arm 302. The first force portion 11 and the second force portion 12 of the compliant constant stiffness body 100 are used to abut and adapt to the cam stopper 303. When the damping swing arm 302 rotates relative to the damping member 301, the cam stopper 303 presses against the first force portion 11 and the second force portion 12 to cause the deformation portion of the compliant constant stiffness body 100 to undergo elastic deformation.

[0085] Here, the first force part 11 and the second force part 12 are both adapted to the cam stopper 303 . Therefore, the first force part 11 and the second force part 12 may be cam structures or cam-like structures, forming an adapted connection relationship with the cam stopper 303 .

[0086] Specifically, the first force-applying part 11 and the second force-applying part 12 are respectively provided with cam structures, which can be abutted and connected with the cam block 303. When the damping swing arm 302 rotates relative to the damping member 301, the cam block 303 can rotate around the axis with the damping swing arm 302, thereby forming a relative extrusion force on the cam structures on each force-applying part, and the extrusion force direction is the direction from the first force-applying part 11 to the second force-applying part 12, or the direction from the second force-applying part 12 to the first force-applying part 11. In this way, the deformable part of the compliant constant stiffness body 100 is squeezed and elastically deformed to provide corresponding damping force.

[0087] Please refer to Figure 4 and Figure 5 In some embodiments, the side wall of the damping swing arm 302 facing the first force portion 11 or the second force portion 12 of the flexible constant stiffness body 100 has a plurality of first abutting surfaces 3021, and each of the first abutting surfaces 3021 forms a different angle with the sliding direction of the damping swing arm 302. The damping swing arm 302 is slidably arranged relative to the damping member 301, and the first force portion 11 or the second force portion 12 of the flexible constant stiffness body 100 is configured to abut against different first abutting surfaces 3021, so that the deformation portion of the flexible constant stiffness body 100 undergoes elastic deformation.

[0088] Here, the damping swing arm 302 moves relative to the damping member 301 by relative sliding, for example, along the width direction of the compliant constant stiffness body 100 , and the width direction is perpendicular to the direction in which the compliant constant stiffness body 100 is squeezed and deformed.

[0089] By providing a plurality of first abutting surfaces 3021 , when the damping swing arm 302 slides relative to the damping member 301 , multiple squeezing effects are exerted on the first force-applying portion 11 or the second force-applying portion 12 , so as to meet different rotation states of the rotating device.

[0090] Optionally, refer to Figure 5 There are three first abutting surfaces 3021, and the three first abutting surfaces 3021 are arranged in sequence along the sliding direction of the damping swing arm 302. One of the first abutting surfaces 3021 is a horizontal plane parallel to the sliding direction of the damping swing arm 302, and the other two first abutting surfaces 3021 are distributed on both sides of the above-mentioned first abutting surfaces 3021, and the two first abutting surfaces 3021 are arranged obliquely in the sliding direction of the damping swing arm 302. In this way, when the first support structure 201 is in a flattened state relative to the second support structure 202, the flexible constant rigidity body 100 abuts against the first abutting surface 3021 at the first position; when the first support structure 201 is in a folded state relative to the second support structure 202, the flexible constant rigidity body 100 abuts against the first abutting surface 3021 at the third position; when the first support structure 201 is in a suspended state relative to the second support structure 202, the flexible constant rigidity body 100 abuts against the first abutting surface 3021 at the middle position.

[0091] Please refer to Figure 6 In some embodiments, the side wall of the damping swing arm 302 facing the first force portion 11 or the second force portion 12 of the flexible constant stiffness body 100 has a second abutment surface 3022, and the second abutment surface 3022 forms an acute angle with the sliding direction of the damping swing arm 302. The damping swing arm 302 is slidably arranged relative to the damping member 301, and the first force portion 11 or the second force portion 12 of the flexible constant stiffness body 100 is configured to abut against different second abutment surfaces 3022, so that the deformation portion of the flexible constant stiffness body 100 undergoes elastic deformation.

[0092] Here, the damping swing arm 302 moves relative to the damping member 301 by relative sliding, for example, along the width direction of the compliant constant stiffness body 100 , and the width direction is perpendicular to the direction in which the compliant constant stiffness body 100 is squeezed and deformed.

[0093] During the sliding of the damping swing arm 302 relative to the damping member 301, the first force-carrying portion 11 or the second force-carrying portion 12 slides along the second abutting surface 3022. During the sliding process, the deformed portion of the flexible constant stiffness body 100 is squeezed or elongated. Therefore, in this embodiment, the rotating device can obtain continuous damping force during the rotation process.

[0094] Next, the compliant constant stiffness mechanism 100 provided in an embodiment of the present application will be introduced and described.

[0095] See also Figures 7 to 12 The compliant constant stiffness mechanism 100 includes at least one sheet-shaped compliant constant stiffness body 10. The compliant constant stiffness body 10 includes a first force-applying portion 11, a second force-applying portion 12, and a deformation portion 13. The second force-applying portion 12 is spaced apart from the first force-applying portion 11. The deformation portion 13 is located between the first force-applying portion 11 and the second force-applying portion 12, and is connected to the first force-applying portion 11 and the second force-applying portion 12.

[0096] Among them, the side of the first force portion 11 facing away from the deformation portion 13 is used to connect with an external object, and the side of the second force portion 12 facing away from the deformation portion 13 is used to connect with an external object; the deformation portion 13, the first force portion 11 and the second force portion 12 are in a first plane, so that when the first force portion 11 moves toward or away from the second force portion 12, the deformation portion 13 can undergo elastic deformation in the first plane.

[0097] It can be understood that the compliant constant stiffness mechanism 100 can be composed of one or more compliant constant stiffness bodies 10, and the compliant constant stiffness body 10 can maintain constant stiffness within the working range, that is, its stiffness characteristics remain unchanged or substantially unchanged, and the output force displacement relationship is the same as that of a traditional spring, and also has good linear characteristics. And, compliance means that the compliant constant stiffness body 10 can be adaptively deformed.

[0098] The compliant constant stiffness body 10 is a sheet-like structure, roughly in the shape of a sheet or a plate. The first force part 11, the second force part 12 and the deformation part 13 are all parts of the compliant constant stiffness body 10. The first force part 11, the second force part 12 and the deformation part 13 can be an integrated structure formed in one piece. For example, they can be made by processing plates or sheets using stamping, laser cutting, wire cutting and other processing techniques, or they can be formed by casting such as die casting; of course, at least two of the first force part 11, the second force part 12 and the deformation part 13 can also be separately formed and connected. Here, the first force part 11 and / or the second force part 12 are the rigid parts in the compliant constant stiffness body 10, and the deformation part 13 can be a compliant part or a part with a compliant and rigid structure.

[0099] The first force-carrying portion 11 and the second force-carrying portion 12 may be structures of various shapes, such as a strip structure (a straight strip structure or a curved strip structure), a block structure, an edge structure, a surface structure, etc., but are not limited thereto. Figure 1 The figure exemplarily shows the case where both the first force-bearing portion 11 and the second force-bearing portion 12 are straight strip structures. The shape of the first force-bearing portion 11 and the shape of the second force-bearing portion 12 may be the same or different. Since the side of the first force-bearing portion 11 facing away from the deformation portion 13 is formed for connecting (which may be abutting or fixedly connected) to an external object, there is no need to set a protruding structure on the side of the first force-bearing portion 11 facing away from the deformation portion 13. Similarly, since the side of the second force-bearing portion 12 facing away from the deformation portion 13 is formed for connecting (which may be abutting or fixedly connected) to an external object, there is no need to set a protruding structure on the side of the second force-bearing portion 12 facing away from the deformation portion 13. The external object refers to any object other than the compliant constant stiffness body 10, and the compliant constant stiffness body 10 can provide elastic force to the external object.

[0100] Furthermore, the deformation part 13, the first force part 11 and the second force part 12 are located in the first plane so that the deformation part can be deformed only in the first plane, reducing the probability of warping or bending of the deformation part due to deformation. The first plane is a plane coplanar with the three parts, which can be a horizontal plane or a vertical plane.

[0101] For example, see Figure 2 The first force-applying portion 11 can be connected to the cam stopper 303 in the above embodiment, and the second force-applying portion 12 can be connected to the damping member 301 in the above embodiment. When the damping swing arm 302 rotates relative to the damping member 301, force is applied to the first force-applying portion, and the first force-applying portion 11 moves toward the second force-applying portion 12 to apply a squeezing force to the deformation portion 13, so that the deformation portion 13 can be elastically deformed to provide elastic force, thereby generating damping between the damping swing arm 302 and the damping member 301.

[0102] It can be understood that the material of the flexible constant rigidity body 10 may include a metal material with good toughness. Exemplarily, the metal material may include stainless steel, spring steel (such as 65Mn steel), etc., but is not limited thereto, and can be selectively set according to the elastic force required to be achieved. Among them, the stainless steel may include austenitic cold-rolled stainless steel strip for springs, 304 stainless steel, or other stainless steel made of materials with good toughness. In this way, the flexible constant rigidity body 10 can have good toughness, so that the flexible constant rigidity body 10 is not easy to exceed the yield strength of the flexible constant rigidity body 10 itself when it is deformed by force (refers to the yield limit when the metal material yields, which is the critical stress value of the metal material yielding; the greater the yield strength, the stronger the ability of the metal material to resist deformation), thereby effectively reducing the possibility of plastic deformation of the flexible constant rigidity body 10.

[0103] As can be seen from the above, the compliant constant stiffness mechanism 100 provided in the embodiment of the present application includes at least one compliant constant stiffness body 10, which is a sheet-like structure. Compared with a spring, it can provide a greater elastic force under the same thickness, that is, it has a smaller thickness when providing the same elastic force, so it is conducive to reducing space occupation, and further conducive to the thin and light design of the device used, for example, when it is applied to the terminal device 10000, it is conducive to the thin and light design of the terminal device 10000. Since the deformation part 13 can be elastically deformed between the first force part 11 and the second force part 12, it is convenient to provide elastic force between the two external objects connected to the first force part 11 and the second force part 12 respectively.

[0104] The compliant constant stiffness mechanism 100 provided in the embodiment of the present application can be applied not only to the terminal device 10000, but also to various devices that require the use of elastic elements, that is, it can be used to replace elastic elements such as springs.

[0105] Please refer to Figure 7 and Figure 8 In some embodiments, the direction from the first force-bearing portion 11 to the second force-bearing portion 12 is a first direction X, and the deformation portion includes a plurality of deformation structures 131 sequentially connected along the first direction X.

[0106] Here, for the convenience of explanation, the direction from the first force part 11 to the second force part 12 is defined as the first direction X, that is, the first force part 11 is the part applying the force, and the second force part 12 is the part receiving the force.

[0107] The connection of the deformable structures 131 in sequence in the first direction X can be understood as a connection similar to a series connection between the deformable structures 131, that is, this series connection mode can transfer the force from one deformable structure 131 to the next deformable structure 131, and each deformable structure 131 is deformed in sequence. Here, the deformable structure 131 is the constant stiffness part in the compliant constant stiffness body 10.

[0108] Please refer to Figure 7 In some embodiments, the deformation portion 13 further includes a plurality of connection structures 132, and the connection structure 132 is used to connect two adjacent deformation structures.

[0109] It can be understood that, in the first direction X, each deformable structure 131 can be directly connected without other connecting structures 132 participating in the auxiliary connection; or, each deformable structure 131 can also be indirectly connected, for example, connected through corresponding connecting structures 132.

[0110] Here, the connection structure 132 should be a rigid structure that does not deform or deforms less, and is used to improve the transmission of deformation force between adjacent deformable structures 131. For example, the connection structure 132 is a connection block, a connection bar, a connection plate, etc. According to actual use requirements, the connection structure 132 can be selected to have rigidity in a certain direction or in all directions.

[0111] Please refer to Figure 7 In some specific embodiments, the deformation structure 131 includes two first elastic segments 1311 spaced apart along the first direction X and two second elastic segments 1312 connected to the free ends of the two first elastic segments 1311, and each first elastic segment 1311 and each second elastic segment 1312 encloses a first deformation space 13a.

[0112] It can be understood that the first deformation space 13a is a through hole or multiple through holes that penetrate the flexible constant stiffness body 100 along the thickness direction of the flexible constant stiffness body 100. The through holes can be various regular or irregular shapes, such as rectangle, diamond, circle, etc., but not limited to these.

[0113] The first elastic section 1311 and the second elastic section 1312 are elastically deformed when subjected to a force along the first direction X, so that the shape of the through hole of the first deformation space 13 a changes accordingly.

[0114] Please refer to Figure 7 and Figure 8 In some specific embodiments, the second elastic segment 1312 is bent at least once in the second direction, and the second direction Y is perpendicular to the first direction X.

[0115] Here, the first direction X may be the length direction of the flexible constant rigidity body 100, and the second direction Y may be the width direction of the flexible constant rigidity body 100. The number of bends of the second elastic segment 1312 in the second direction Y may be selected according to actual use requirements, for example, Figure 8 As shown, the second elastic section 1312 is bent once in the second direction Y, and the second elastic section 1312 is convex or concave along the second direction Y; for another example, Figure 7 As shown, the second elastic section 1312 is bent four times in the second direction Y, and the second elastic section 1312 is convex or concave along the second direction Y.

[0116] It should be noted that the bending result can be a right-angle bend or an arc-shaped transition bend, or both a right-angle bend and an arc-shaped transition bend.

[0117] Please refer to Fig. 9 In some embodiments, the deformation structure 131 includes at least two first support members 1313, two second support members 1314 and a plurality of first connecting members 1315, each first support member 1313 extends along the first direction X and is arranged at intervals, the two second support members 1314 extend along the first direction X and are located on opposite sides of each first support member 1313, the opposite ends of each first connecting member 1315 are respectively connected to the adjacent first support member 1313 and the second support member 1314, and the two adjacent first connecting members 1315 and the corresponding two first support members 1313 enclose a second deformation space 13b.

[0118] It can be understood that the second deformation space 13b is a through hole or multiple through holes that penetrate the flexible constant stiffness body 100 along the thickness direction of the flexible constant stiffness body 100. The through holes can be various regular or irregular shapes, such as rectangle, diamond, circle, etc., but not limited to this.

[0119] Specifically, Fig. 9 As shown, two deformation structures 131 are connected in sequence along the first direction X, wherein the number of first support members 1313 and the number of second support members 1314 of each deformation structure 131 are both two, and five first connecting members 1315 are arranged between two adjacent first supporting members 1313 and second supporting rods, so that each deformation structure 131 has sixteen second deformation spaces 13b, and each second deformation space 13b has the same size and shape. Of course, when the spacing between any two adjacent first connecting members 1315 is not equal, the size of the second deformation space 13b also changes accordingly.

[0120] Please refer to Figures 10 to 13In some embodiments, the direction from the first force-bearing portion 11 to the second force-bearing portion 12 is the first direction X, the deformation portion 13 includes at least two third support members 1316 and a plurality of second connecting members 1317, each third support member 1316 extends along the first direction X and is arranged at intervals along the second direction Y, the opposite ends of each second connecting member 1317 are connected to two adjacent third support members 1316, the two adjacent second connecting members 1317 and the corresponding two third support members 1316 are enclosed to form a third deformation space 13c, and the second direction Y is perpendicular to the first direction X.

[0121] It can be understood that the third deformation space is a through hole or multiple through holes that penetrate the flexible constant stiffness body 100 along the thickness direction of the flexible constant stiffness body 100. The through holes can be various regular or irregular shapes, such as rectangle, diamond, circle, etc., but not limited to this.

[0122] Here, the first direction X may be a length direction of the compliant constant stiffness body 100 , and the second direction Y may be a width direction of the compliant constant stiffness body 100 .

[0123] In this embodiment, each second connecting member 1317 is similar to being connected in parallel between two adjacent third supporting members 1316, that is, the opposite ends of each connecting member are respectively connected to the corresponding third supporting member 1316, and then the corresponding third supporting member 1316 is connected to the first force part 11 or the second force part 12.

[0124] Please refer to Fig.10 In some specific embodiments, the number of the third supporting members 1316 is two, and the extending direction of each second connecting member 1317 is parallel to the second direction Y.

[0125] It can be understood that the two third support members 1316 are arranged in parallel, and each second connecting member 1317 is arranged between the two third support members 1316 at intervals.

[0126] Specifically, Fig.10 As shown, the number of second connecting members 1317 is ten, thereby forming nine third deformation spaces 13c, and the size and shape of each third deformation space 13c are the same. Of course, when the spacing between any two adjacent second connecting members 1317 is not equal, the size of the third deformation space 13c also changes accordingly.

[0127] Please refer to Fig.11 In some embodiments, the number of third support members 1316 is three, wherein two third support members 1316 are spaced apart along the first direction X, the third third support member 1316 is spaced apart from the first two third support members 1316 along the second direction Y, and the extension direction of each second connecting member 1317 is parallel to the second direction Y.

[0128] It can be understood that the two third support members 1316 on the same side are arranged in parallel with the third third support member 1316, and each second connecting member 1317 is arranged at intervals between any two third support members 1316. This embodiment can be an evolution of the above embodiment, that is, one third support member 1316 in the above embodiment is truncated.

[0129] Specifically, Fig.11 As shown, the number of second connecting members 1317 is twelve, thereby forming ten third deformation spaces 13c, and five of the third deformation spaces 13c form a group, and the other five third deformation spaces 13c form another group. Of course, when the spacing between any two adjacent second connecting members 1317 is not equal, the size of the third deformation space 13c also changes accordingly.

[0130] Please refer to Fig.12 In some embodiments, the number of third support members 1316 is four, two of which are arranged at intervals along the first direction X, and the other two third support members 1316 are located on opposite sides of the first two third support members 1316 along the second direction Y, and the extension direction of each second connecting member 1317 forms an acute angle with the second direction Y.

[0131] It can be understood that the two third support members 1316 on the opposite sides are arranged in parallel, and each second connecting member 1317 is arranged between two adjacent third support members 1316 at intervals.

[0132] Specifically, Fig.12 As shown, the number of the second connecting members 1317 is sixteen, thereby forming twelve third deformation spaces 13c, and every three third deformation spaces 13c form a group, and each third deformation space 13c is arranged in a diamond shape.

[0133] Please refer to Fig.13 In some embodiments, the number of third support members 1316 is four, two of which are arranged at intervals along the first direction X, and the other two third support members 1316 are located on opposite sides of the first two third support members 1316 along the second direction Y, and each second connecting member 1317 is bent at least three times in the second direction Y.

[0134] It can be understood that the two third support members 1316 on the opposite sides are arranged in parallel, and each second connecting member 1317 is arranged between two adjacent third support members 1316 at intervals.

[0135] Specifically, Fig.13As shown, the number of the second connecting members 1317 is eight, thereby forming four third deformation spaces 13c, and each second connecting member 1317 is bent three times in the second direction Y.

[0136] Please refer to the figures. In some embodiments, the first force-carrying portion 11 includes any one or both of a block body and a plate body; and / or the second force-carrying portion 12 includes any one or both of a block body and a plate body.

[0137] Understandably, if Figure 3 and Figure 7 As shown, the first force-carrying portion 11 and the second force-carrying portion 12 are both blocks, which can be directly matched with the external structure, for example, the cam stopper 303 on the damping swing arm 302 in the aforementioned embodiment, or directly matched with the first abutting surface 3021 or the second abutting surface 3022 of the damping swing arm 302.

[0138] Or, if Figures 10 to 13 As shown, the first force-carrying portion 11 and the second force-carrying portion 12 are both plates, and the plates are extended and arranged in the second direction Y of the compliant constant-rigidity body 10 , that is, they are adapted to the corresponding external structure.

[0139] The above are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be covered by the protection scope of the present application.

Claims

1. A compliant constant stiffness mechanism, characterized in that: The invention comprises at least one sheet-shaped flexible constant stiffness body, wherein the flexible constant stiffness body comprises: The first force part; A second force-bearing portion, spaced apart from the first force-bearing portion; and A deformation portion, located between the first force-applying portion and the second force-applying portion, and connected to the first force-applying portion and the second force-applying portion; Among them, the side of the first force part facing away from the deformation part is used to connect with an external object, and the side of the second force part facing away from the deformation part is used to connect with an external object; the deformation part, the first force part and the second force part are in a first plane, so that when the first force part moves toward or away from the second force part, the deformation part can undergo elastic deformation in the first plane.

2. The compliant constant stiffness mechanism according to claim 1, characterized in that: The direction from the first force-applying portion toward the second force-applying portion is a first direction, and the deformation portion includes a plurality of deformation structures sequentially connected along the first direction.

3. The compliant constant stiffness mechanism according to claim 2, characterized in that: The deformation portion further includes a plurality of connection structures, and the connection structure is used to connect two adjacent deformation structures.

4. The compliant constant stiffness mechanism according to claim 2 or 3, characterized in that: The deformation structure includes two first elastic segments arranged at intervals along the first direction and two second elastic segments connected to the free ends of the two first elastic segments. Each of the first elastic segments and each of the second elastic segments encloses a first deformation space.

5. The compliant constant stiffness mechanism according to claim 4, characterized in that: The second elastic section is bent at least once in a second direction, and the second direction is perpendicular to the first direction.

6. The compliant constant stiffness mechanism according to claim 2 or 3, characterized in that: The deformation structure includes at least two first support members, two second support members and multiple first connecting members, each of the first support members extends along the first direction and is arranged at intervals, two second support members extend along the first direction and are located on opposite sides of each of the first support members, the opposite ends of each of the first connecting members are respectively connected to adjacent first support members and second support members, and two adjacent first connecting members and the corresponding two first support members enclose a second deformation space.

7. The compliant constant stiffness mechanism according to claim 1, characterized in that: The direction of the first force-bearing portion toward the second force-bearing portion is a first direction, and the deformation portion includes at least two third support members and a plurality of second connecting members, each of the third support members extends along the first direction and is arranged at intervals along the second direction, and the opposite ends of each of the second connecting members are connected to two adjacent third support members, and two adjacent second connecting members and the corresponding two third support members enclose a third deformation space, and the second direction is perpendicular to the first direction.

8. The compliant constant stiffness mechanism according to claim 7, characterized in that: The number of the third supporting members is two, and the extending direction of each of the second connecting members is parallel to the second direction.

9. The compliant constant stiffness mechanism according to claim 7, characterized in that: There are three third support members, two of which are spaced apart along the first direction, the third third support member is spaced apart from the first two third support members along the second direction, and the extension direction of each second connecting member is parallel to the second direction.

10. The compliant constant stiffness mechanism according to claim 7, characterized in that: There are four third support members, two of which are arranged at intervals along the first direction, and the other two are located on opposite sides of the first two third support members along the second direction, and the extension direction of each second connecting member forms an acute angle with the second direction.

11. The compliant constant stiffness mechanism according to claim 7, characterized in that: There are four third support members, two of which are arranged at intervals along the first direction, and the other two third support members are located on opposite sides of the first two third support members along the second direction, and each second connecting member is bent at least three times in the second direction.

12. The compliant constant stiffness mechanism according to any one of claims 1 to 11, characterized in that: The first force-carrying portion includes any one or both of a block and a plate; and / or the second force-carrying portion includes any one or both of a block and a plate.

13. A rotating shaft device, characterized in that: It includes a rotating shaft mechanism and a damping mechanism, the rotating shaft mechanism includes a first supporting structure and a second supporting structure that rotate relative to each other, at least one damping mechanism is provided on each of the first supporting structure and the second supporting structure, the damping mechanism includes a damping member, a damping swing arm and a compliant constant stiffness body as described in any one of claims 1 to 12, the damping swing arm is slidably connected to the damping member, and when the first supporting structure and the second supporting structure rotate relative to each other, the damping swing arm moves relative to the damping member, and the compliant constant stiffness body undergoes elastic deformation when the damping member moves relative to the damping swing arm.

14. The rotating shaft device according to claim 13, characterized in that: The damping mechanism also includes a cam stopper arranged on the damping swing arm. The first force-bearing portion and the second force-bearing portion of the compliant constant stiffness body are used to abut and adapt to the cam stopper. When the damping swing arm rotates relative to the damping member, the cam stopper presses against and squeezes the first force-bearing portion and the second force-bearing portion to cause the deformation portion of the compliant constant stiffness body to undergo elastic deformation.

15. The rotating shaft device according to claim 13, characterized in that: The side wall of the damping swing arm facing the first force portion or the second force portion of the flexible constant stiffness body has multiple first abutment surfaces, and each of the first abutment surfaces forms a different angle with the sliding direction of the damping swing arm. The damping swing arm is slidably arranged relative to the damping member, and the first force portion or the second force portion of the flexible constant stiffness body is configured to abut against different first abutment surfaces so that the deformation portion of the flexible constant stiffness body undergoes elastic deformation.

16. The rotating shaft device according to claim 13, characterized in that: The side wall of the damping swing arm facing the first force portion or the second force portion of the flexible constant stiffness body has a second abutment surface, and the second abutment surface forms an acute angle with the sliding direction of the damping swing arm. The damping swing arm is slidably arranged relative to the damping member, and the first force portion or the second force portion of the flexible constant stiffness body is configured to abut against different second abutment surfaces so that the deformation portion of the flexible constant stiffness body undergoes elastic deformation.

17. A terminal device, characterized in that: include: The shaft device according to any one of claims 13 to 16; The first shell and the second shell are rotatably connected via the rotating shaft device; as well as The folding screen is arranged on the first shell and the second shell.

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