Elastic member, rotating shaft structure and electronic device

Abstract

The embodiment of the application discloses an elastic piece, a rotating shaft structure and electronic equipment, the elastic piece can be applied to electronic equipment such as mobile phones, notebook computers and wearable devices, the elastic piece comprises a barrel main body which is integrally formed, the barrel main body is provided with sequentially connected suspension beam bodies, axial elastic deformation of the barrel main body can be realized, the suspension beam bodies are integrally formed and do not need to be assembled, and the suspension beam bodies can be installed on a mandrel at one time, so that the assembly efficiency of the rotating shaft mechanism is improved; in addition, the elastic piece defined in the application can depend on a high service life interval of the flexible material itself, provide a more long-acting and stable rotating shaft torque experience, and improve the experience consistency of the electronic equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electronic products, in particular to a spring, a rotating shaft structure and an electronic device. BACKGROUND

[0002] Electronic devices such as notebook computers have a display side and a keyboard side connected by a rotating shaft structure. A concave-convex wheel type rotating shaft is commonly used. Please refer to Figure 1 , Figure 1 Figure 1 is a schematic diagram of a disc spring assembly used in a prior art concave-convex wheel type rotating shaft. The disc spring assembly provides an axial force in the concave-convex wheel type rotating shaft. When the concave wheel and the convex wheel of the concave-convex wheel type rotating shaft rotate relative to each other, the disc spring assembly is compressed. The disc spring assembly generates an axial elastic force to press the relative surfaces of the concave wheel and the convex wheel to generate damping. In this way, the two parts connected by the concave-convex wheel type rotating shaft can be at a predetermined angle.

[0003] As can be seen from Figure 1 , the disc spring assembly is assembled from multiple disc springs, Figure 1 Figure 2 shows that the disc spring assembly includes five disc springs. The number of disc springs depends on the axial elastic force required by the actual product. Each disc spring has a front surface and a back surface. All the disc springs are assembled to form an integral assembly installed in the concave-convex wheel type rotating shaft by single-layer front and back, double-layer front and back, or other schemes. Regardless of the assembly scheme used by the disc spring assembly, the disc springs need to be assembled in order. Manual assembly is inefficient and prone to errors. One person needs to distinguish the front and back surfaces of each disc spring and press them into place. When the number of disc springs required increases, the assembly efficiency decreases.

[0004] Therefore, how to overcome the above-mentioned defects is a technical problem that technicians in the field have been concerned about. SUMMARY

[0005] The embodiments of the present application provide a spring, a rotating shaft structure and an electronic device that do not need to be assembled and meet the use requirements.

[0006] In a first aspect, a spring can be used in a rotating shaft mechanism of an electronic device to provide an axial force that generates damping. The electronic device can be a notebook computer. The spring includes an integrally formed barrel body having a central through hole. The barrel body can be made of elastic metal and can be integrally formed by machining, casting or other processes. The barrel body includes at least two suspended beam bodies. The suspended beam bodies are arranged at intervals along the axial direction and extend along the circumferential direction. The local positions of adjacent suspended beam bodies are fixedly connected to each other. In this way, under the action of the axial force, the barrel body can elastically deform along the axial direction. The spring in the present application is an integrally formed barrel body. By arranging the suspended beam bodies connected in sequence on the barrel body, the barrel body can elastically deform along the axial direction. The suspended beam bodies are integrally formed and do not need to be assembled. They can be installed on the mandrel at one time, thereby improving the assembly efficiency of the rotating shaft mechanism.

[0007] In addition, each disc spring may have a large difference in rigidity due to different materials, thicknesses, and shapes, resulting in a large difference in the overall assembly, uneven yield levels, and a large difference in consistency experience for the same product. The elastic member defined in the present application can rely on the high life interval (about 100,000 times) of the flexible material itself to provide a more long-term and stable torque experience for the rotating shaft and improve the consistency of the experience of the electronic device.

[0008] Based on the first aspect, the present application also provides a first specific implementation of the first aspect: all gaps formed between adjacent cantilever beam bodies include a first gap and a second gap, the first gap deforms first when the barrel body is subjected to an axial force, and the second gap deforms again when the axial force is greater than a predetermined value. In this example, by setting the first gap and the second gap to different sizes or shapes, a variable stiffness elastic member that deforms first and then deforms second can be achieved to meet the needs of different structures. The first gap and the second gap are located at different axial positions, that is, they can be arranged in different cross sections perpendicular to the axis.

[0009] Based on the first aspect or the first specific embodiment, the present application also provides a second specific implementation of the first aspect: the barrel body includes a first barrel body portion and a second barrel body portion at the two axial ends, both of which are annular structures, each cantilever beam body is located between the first barrel body portion and the second barrel body portion, the first barrel body portion and the second barrel body portion are connected to form a whole through the cantilever beam bodies, and the cantilever beam bodies at the two axial ends can be fixedly connected to the corresponding side barrel body portion. The cantilever beam bodies usually located on the outer side are fixedly connected to the corresponding side barrel body portion through two or more circumferentially uniformly arranged connecting bodies. The outer end surface of the first barrel body portion and the second barrel body portion can be designed to match the structure in contact with it, which can optimize the overall stress of the barrel body and facilitate uniform compression of the barrel body in the axial direction. In addition, the axial width of the first barrel body portion and the second barrel body portion can be greater than each cantilever beam body, which can appropriately increase the stiffness of the elastic member.

[0010] Based on the second specific implementation of the first aspect, the present application also provides a third specific implementation of the first aspect: including at least one cantilever unit, the cantilever unit includes a first support and a second support, both of which have a predetermined length in the axial direction, the first support is fixedly connected to the first barrel body portion, and the second support is fixedly connected to the second barrel body portion. In the non-compressed state, the first support and the second support have a predetermined distance between the opposite ends in the axial direction; the first support and the second support are each provided with at least one cantilever beam body, the cantilever beam body is a cantilever beam, one end of the cantilever beam body is fixedly connected to the first support and the second support, and the non-fixed ends of adjacent cantilever beam bodies are fixedly connected through a first connecting body.

[0011] The cantilever beam structure of the cantilever beam body is simple and convenient to compressive deformation.

[0012] Based on the third implementation form of the first aspect, the fourth implementation form of the first aspect is further provided. The first support column and the second support column include two side walls arranged in the circumferential direction, the free ends of all the cantilever beam bodies on the same side of the first support column and the second support column are connected to the same first connecting body, and the first connecting body is suspended between the first barrel portion and the second barrel portion. In this example, the cantilever beam bodies on the same side are connected to the same first connecting body, and the forming process is relatively simple.

[0013] Based on the third or fourth implementation form of the first aspect, the fifth implementation form of the first aspect is further provided. Two side walls of each of the first support column and the second support column are provided with a cantilever beam body, so that the cantilever beam bodies on both sides of the first support column and the second support column are compressed and deformed at the same time, the first support column and the second support column are prevented from being deflected when axially deformed, axial compression is maintained, the rotation of the shaft mechanism is smooth, the use feeling is improved, the friction between the barrel body and the mandrel is avoided, and the service life of the elastic member is improved. The free ends of the cantilever beam bodies on the same side are connected by an arc segment or a straight segment. The straight segment connection structure is simple, and the arc segment connection can effectively reduce stress concentration at the connection position of the two cantilever beam bodies, thereby improving the service life of the barrel body.

[0014] Based on the third or fourth implementation form of the first aspect, the sixth implementation form of the first aspect is further provided. The two side walls arranged in the circumferential direction of the first support column and the second support column are provided with two or more cantilever beam bodies. When the number of cantilever beam bodies on the side wall of the first support column or the second support column is greater than two, the spacing between adjacent cantilever beam bodies is equal or unequal. When the spacing between adjacent cantilever beam bodies is equal, the barrel body of this structure has a simple forming process, and each segment of the barrel body deforms uniformly when deformed; when the spacing between adjacent cantilever beam bodies is unequal, the cantilever beam bodies with larger spacing are compressed and deformed first, and the cantilever beam bodies with smaller spacing are compressed and deformed later, which is beneficial to forming an elastic member with non-equal rigidity and meeting the needs of different products in different use states.

[0015] Based on the fifth or sixth implementation form of the first aspect, the seventh implementation form of the first aspect is further provided. Each cantilever beam body is equal or non-equal in width along the extension direction thereof, so as to form equal or non-equal spacing between adjacent cantilever beam bodies. The cantilever beam body can be an arc segment, and the two end faces of the arc segment can be flat surfaces perpendicular to the axial direction of the barrel body. This structure has a relatively simple forming process. Of course, the two end faces of the cantilever beam body can also be in the form of a bending surface or a wave surface extending in the circumferential direction, so as to form equal or non-equal spacing between adjacent cantilever beam bodies.

[0016] The interval between the adjacent cantilever beam bodies can be determined according to the product to be applied, so as to meet different requirements.

[0017] According to the seventh implementation form of the first aspect, the eighth implementation form of the first aspect is provided. The first gap is formed by the cantilever beam body at the inner end of the first support and the cantilever beam body at the inner end of the second support, and in the non-stress state, the first gaps on both sides of the same support are communicated through the gap between the first support and the second support. The second gap is formed between the axially adjacent cantilever beam bodies on the first support and between the axially adjacent cantilever beam bodies on the second support, and the maximum axial interval of the first gap is greater than the maximum axial interval of the second gap.

[0018] In this example, when the elastic member is compressed, the first support and the second support first approach each other, and then the cantilever beam bodies on the first support and the second support deform at the same time, thereby forming a non-equal stiffness design. This design is relatively simple. Of course, the first interval can be greater than the second interval, and the second interval can be greater than the third interval, so as to further refine the structure design of the barrel body, for example, the gap between the cantilever beam bodies on the first support and the gap between the cantilever beam bodies on the second support are further designed to be different forms, so as to meet various use requirements.

[0019] According to the eighth implementation form of the first aspect, the ninth implementation form of the first aspect is provided. The second through hole is surrounded by the axially adjacent cantilever beam bodies on the same support, the support connected to both ends of the cantilever beam bodies, and the first connecting body. The maximum axial dimension and the maximum circumferential dimension of the first through hole are greater than the maximum axial dimension and the maximum circumferential dimension of the second through hole, respectively. The first through hole includes the first gap, and the second through hole is the second gap. The second through hole is surrounded by the axially adjacent cantilever beam bodies on the same support, the support connected to both ends of the cantilever beam bodies, and the first connecting body. The maximum circumferential dimension of the first through hole is greater than the maximum axial dimension of the second through hole. In this example, the size of the first through hole is greater than that of the second through hole, so as to easily realize the deformation in sequence. In addition, the part of the cantilever unit located on both sides of the first through hole can be a structure symmetric about the central axis of the first through hole.

[0020] According to any one of the first to ninth implementation forms of the first aspect, the tenth implementation form of the first aspect is provided. The axial width of each cantilever beam body is equal or unequal at different positions along the extension direction of the cantilever beam body, so as to form equal-width or non-equal-width gaps between the adjacent cantilever beam bodies. That is, the cantilever beam body can be an equal-width structure to form equal-width gaps between the adjacent cantilever beam bodies, and the structure is relatively simple. The cantilever beam body is a non-equal-width structure, so as to form other different types of gaps between the adjacent cantilever beam bodies, and realize stable deformation along the axial direction.

[0021] Based on the tenth implementation manner of the first aspect, the present application further provides an eleventh implementation manner of the first aspect: each cantilever beam body comprises a first segment and a second segment connected to each other, the first segment and the second segment are smaller in axial thickness as they are closer to the connecting position of the two, so as to form a prismatic gap. The prismatic through hole structure is simple and has relatively high axial deformation stability.

[0022] Based on the third to ninth implementation manners of the first aspect, the present application further provides an eleventh implementation manner of the first aspect: the number of cantilever units is at least two, and each cantilever unit is arranged uniformly in the circumferential direction. The number of cantilever units can be two or three or more than three, and the cantilever units are arranged uniformly in the axial direction, which is beneficial to the axial deformation of the barrel body.

[0023] Based on the eleventh implementation manner of the first aspect, the present application further provides a twelfth implementation manner of the first aspect: the free ends of each cantilever beam body extending in opposite directions in adjacent cantilever units are fixed to the same first connecting body. In this example, the elastic member formed by the cantilever units can deform synchronously in the axial direction, improving the motion coaxiality.

[0024] Based on the second to twelfth implementation manners of the first aspect, the present application further provides a thirteenth implementation manner of the first aspect: the first support and the second support are completely coincident in the projection in the plane perpendicular to the axial direction, and the cantilever beam bodies on both sides of the first support and the second support are arranged symmetrically about the axial center of the cantilever unit. In this example, the cantilever unit can be arranged symmetrically about the central cross section of the barrel body, and the axial deformation stability is relatively good.

[0025] Based on the first implementation manner of the first aspect, the present application further provides a fourteenth implementation manner of the first aspect: each cantilever beam body is a ring-shaped beam body, the number of ring-shaped beam bodies is at least one, and all the ring-shaped beam bodies divide the space between the first barrel portion and the second barrel portion into N ring-shaped gaps in sequence, i.e., a first ring-shaped gap to an Nth ring-shaped gap, at least two second connecting bodies are arranged in each ring-shaped gap, the first barrel portion is connected to the adjacent ring-shaped beam body through the second connecting body in the first ring-shaped gap, the second barrel portion is connected to the adjacent ring-shaped beam body through the connecting body in the Nth ring-shaped gap, and the adjacent ring-shaped beam bodies are connected through the second connecting body therebetween. The ring-shaped beam body is a monolithic structure, and has good synchronous deformation capability and good stability when subjected to axial force. Each ring-shaped gap can be of equal width, or can be of non-equal width. The sub-gaps formed by dividing each ring-shaped gap can be the same or different. The width of the same sub-gap can be an equal-width gap or a non-equal-width gap.

[0026] In the fourteenth implementation form of the first aspect, the second connectors in each annular gap are arranged circumferentially uniformly, and the second connectors inside adjacent annular gaps are arranged alternately, and the projections of the second connectors of adjacent annular gaps in a plane perpendicular to the axial direction at least partially do not coincide. In this way, the annular beam bodies in each layer can deform along the axial direction.

[0027] Alternatively, or in combination, each sub-gap formed by the second connectors in the same annular gap is an equal-width gap or a non-equal-width gap.

[0028] In the fifteenth implementation form of the first aspect, the sixteenth implementation form of the first aspect is provided. Each annular gap has two second connectors, and the central axis planes of the two second connectors in a previous annular gap and the central axis planes of the two second connectors in a subsequent annular gap form an angle of 80° to 100°. In an example, the central axis planes of the two second connectors in a previous annular gap and the central axis planes of the two second connectors in a subsequent annular gap form an angle of 90°.

[0029] In the first aspect, the first to sixteenth implementation forms, the second implementation form of the first aspect is provided. The barrel body is a cylindrical barrel. The cylindrical barrel can improve the smoothness of the rotation of the rotating shaft structure.

[0030] In the second aspect, the rotating shaft structure for realizing the relative rotation of the first component and the second component is provided. The rotating shaft structure includes a mandrel for fixing with the first component and a rotating member for fixing with the second component. The rotating member is in rotational connection with the mandrel. The rotating shaft structure further includes a concave-convex assembly and the elastic member of any one of the above. The sleeve is sleeved on the mandrel. When the mandrel and the rotating member rotate relative to each other, the concave-convex assembly can compress the elastic member to generate axial deformation, so as to set the included angle between the first component and the second component.

[0031] In the third aspect, the electronic device is provided. The electronic device includes the first component, the second component, and the rotating shaft structure of any one of the above. The first component and the second component are in rotational connection through the rotating shaft structure to realize the relative rotation.

[0032] The electronic device and the rotating shaft structure of the present application include the above-mentioned elastic member, and therefore have the above-mentioned technical effects of the elastic member. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 A decomposition diagram of a disc spring in a prior art concave-convex wheel type rotating shaft is shown.

[0034] Figure 2 A schematic diagram of a rotating shaft structure provided by an embodiment of the present application applied to an electronic device is shown.

[0035] Figure 3 A schematic view of a rotating shaft structure according to a first embodiment of the present application;

[0036] Figure 4 A schematic view of a rotating shaft structure according to a first embodiment of the present application; Figure 3

[0037] Figure 5 A schematic view of a rotating shaft structure according to a first embodiment of the present application;

[0038] Figure 6 A schematic view of a rotating shaft structure according to a first embodiment of the present application; Figure 5

[0039] Figure 7 A schematic view of a rotating shaft structure according to a first embodiment of the present application;

[0040] Figure 8 A schematic view of a rotating shaft structure according to a first embodiment of the present application; Figure 7

[0041] Figure 9 A schematic view of a rotating shaft structure according to a first embodiment of the present application;

[0042] Figure 10 A schematic view of a rotating shaft structure according to a first embodiment of the present application; Figure 9

[0043] A schematic view of a rotating shaft structure according to a first embodiment of the present application; Figure 11 Figure 9

[0044] Figure 12 A schematic view of a rotating shaft structure according to a first embodiment of the present application; Figure 10

[0045] A schematic view of a rotating shaft structure according to a first embodiment of the present application; Figure 13

[0046] A schematic view of a rotating shaft structure according to a first embodiment of the present application; Figure 14 Figure 13 A schematic view of a rotating shaft structure according to a first embodiment of the present application;

[0047] Figure 15 A schematic view of a rotating shaft structure according to a first embodiment of the present application; Figure 13

[0048] A schematic view of a rotating shaft structure according to a first embodiment of the present application; Figure 16

[0049] A schematic view of a rotating shaft structure according to a first embodiment of the present application; Figure 17 Figure 16 A schematic view of a rotating shaft structure according to a first embodiment of the present application;

[0050] A schematic view of a rotating shaft structure according to a first embodiment of the present application; Figures 1 to 17 A one-to-one correspondence between reference numerals and component names in the drawings is shown as follows:​​​​​​​

[0051] 1 barrel body; 1-1 first barrel portion; 1-2 second barrel portion; 11 first support column; 12 second support column; 10 cantilever beam body; 10a first section; 10b second section; 101 second through hole; 102 first through hole; 103 gap; 13 first connecting body; 14 second connecting body; 151 first annular gap; 152 second annular gap; 153 third annular gap; 154 fourth annular gap; 155 fifth annular gap; 156 sixth annular gap; 157 seventh annular gap; 158 eighth annular gap; 1511 first sub-gap; 1521 second sub-gap; 1531 third sub-gap; 1541 fourth sub-gap; 1551 fifth sub-gap; 1561 sixth sub-gap; 1571 seventh sub-gap; 1581 eighth sub-gap.

[0052] 2 mandrel; 3 second bracket; 4 first bracket; 5 concave cam; 6 convex cam; 7 locking nut; 8 friction plate Specific embodiments

[0053] In view of the technical problems of complicated assembly and low assembly efficiency of the disc spring assembly used in the concave-convex cam type rotating shaft mentioned in the background art, the present application has carried out in-depth research and proposed a resilient member which can improve the assembly efficiency under the premise of meeting the use function of the concave-convex cam type rotating shaft. That is, the resilient member can provide axial force and can replace the disc spring in the concave-convex cam type rotating shaft in the background art.

[0054] In the description of the present application, it should be noted that the directions or position relationships indicated by the terms "inner", "outer" and the like are based on the directions or position relationships shown in the drawings, and are only for the convenience of describing the technology simply, and do not indicate or imply that the devices or elements referred to must have a particular direction, a particular direction configuration and operation, and therefore cannot be understood as limiting the present application.

[0055] Hereinafter, the terms "first", "second", and the like are only for descriptive purposes and cannot be understood to indicate or imply relative importance or implicitly indicate the number of the technical features indicated. Therefore, the features defined as "first", "second", and the like can explicitly or implicitly include one or more of the features.

[0056] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0057] The hinge structure provided in this application can be applied to electronic devices. Of course, the hinge structure of this application can also be applied to sliding doors, folding machine hinges, accessory hinges, etc. The electronic device can be a mobile terminal such as a mobile phone, wearable device, in-vehicle device, augmented reality (AR) / virtual reality (VR) device, laptop computer, ultra-mobile personal computer (UMPC), netbook, personal digital assistant (PDA), etc., or it can be a professional shooting device such as a digital camera, SLR camera / mirrorless camera, action camera, gimbal camera, drone, etc. This application does not limit the specific type of electronic device; for ease of understanding, a laptop computer will be used as an example below.

[0058] This application provides a hinge structure for enabling relative rotation between a first component and a second component. The first and second components can be any components that require relative rotation, and can be two rotatably connected parts of an electronic device. For example, one of the first and second components can be the display side of a laptop, and the other can be the keyboard side. Alternatively, one of the first and second components can be the first display side of a foldable phone, and the other can be the second display side. Any electronic device with two relatively rotating components can utilize the hinge structure described in this embodiment to achieve rotation.

[0059] Please refer to Figure 2 , Figure 2 This is a schematic diagram illustrating the application of a hinge structure provided in one embodiment of this application in an electronic device, wherein... Figure 1 In the middle, A indicates the installation position of the rotating shaft structure.

[0060] The electronic device includes a first component 100 and a second component 200 that rotate relative to each other. Figure 2 Taking a laptop computer as an example, the following is an illustration of Chinese electronic devices. Figure 1 The diagram illustrates that the first component 100 of the electronic device is the display side of a laptop computer, the second component 200 is the keyboard side of the laptop computer, and the hinge structure 300 realizes the rotatable connection between the display side and the keyboard side.

[0061] Please refer to Figures 3 to 4 , Figure 3 This is a schematic diagram of the rotating shaft structure provided in the first embodiment of this application. Figure 4 for Figure 3 A schematic diagram of the decomposition of the diagram. (The diagram shows the decomposition of the diagram.) Figure 3 In the figure, F represents the force exerted by the elastic element on the concave wheel and the cam, and the arrow indicates the direction of F.

[0062] The rotating shaft structure provided by the application comprises a mandrel 2, a cam 6, a concave wheel 5, a friction plate 8, a locking nut 7, a first support 4, a second support 3 and an elastic member 1. Surfaces of the cam and the concave wheel 5 opposite to each other are concave-convex surfaces. One of the surfaces can rotate with the mandrel 2, and the other surface rotates opposite to the mandrel 2 in the circumferential direction and does not rotate with the mandrel 2. Figure 4 As shown in FIG. 2, the cam 6 rotates with the mandrel 2, the concave wheel 5 is fixed with the first support 4 and cannot rotate with the mandrel 2, the second support 3 is fixedly connected to the mandrel 2, and the first support 4 is connected to the concave wheel 5.

[0063] When applied to an electronic device, one of the first support 4 and the second support 3 is fixed with a first part 100 of the electronic device, and the other is fixed with a second part 200 of the electronic device. When the mandrel 2 rotates, one of the first part 100 and the second part 200 rotates relative to the other. Figure 2 In the application, the mandrel 2 is fixed with a keyboard side of a notebook computer, the first support 4 is fixed with a display side of the notebook computer, and obviously, the mandrel 2 and the display side of the notebook computer are fixed, and the first support 4 and the keyboard side of the notebook computer are fixed.

[0064] When the mandrel 2 drives the second support 3 to rotate relative to the first support 4, the concave wheel 5 and the cam 6 rotate relative to each other. Because the contact surfaces opposite to each other of the concave wheel 5 and the cam 6 are concave-convex surfaces, the axial positions of the concave wheel 5 and the cam 6 change during the rotation, and different degrees of axial compression force of the elastic member are generated, the elastic member is deformed in the axial direction, and under the action of the axial restoring force of the elastic member, a certain damping force is formed between the concave wheel 5 and the cam 6, so that the first part 100 and the second part 200 are in a predetermined clamping angle position.

[0065] The elastic member of the rotating shaft structure in the application comprises an integrally formed barrel body 1. The barrel body 1 has a central through hole, and the barrel body 1 is sleeved on the mandrel 2 through the central through hole. The barrel body 1 can be a metal member, for example, a metal material with elasticity. The barrel body 1 can be integrally formed by machining or casting, and can also be integrally formed by other methods. The barrel body 1 can be a cylindrical barrel, and the cross sections of the outer surface and the inner surface are circular holes. Of course, the outer surface of the barrel body 1 can also be a polygonal structure, as long as it does not affect the use of the elastic member in the corresponding mechanism.

[0066] The barrel body 1 in the present application comprises at least two cantilever beam bodies 10, each of which is arranged axially spaced apart, and the cantilever beam bodies 10 extend circumferentially, and gaps are formed between adjacent cantilever beam bodies 10. When the barrel body 1 is a cylindrical barrel, the cantilever beam bodies 10 can be arc segments, and the barrel body 1 is axially spaced apart by at least two arc segments. In the present application, the local positions of adjacent cantilever beam bodies 10 are fixedly connected, and the local connection positions can be one or two or more than two, and when subjected to an axial force, the barrel body 1 can elastically deform axially.

[0067] According to the axial extrusion force received during use, the selected material, the wall thickness of the barrel body 1 and the length of the cantilever beam body 10 are comprehensively calculated to enable the barrel body 1 to generate sufficient axial extrusion force, and the entire barrel body 1 is always in the elastic deformation zone during extrusion and does not undergo plastic deformation, so that the problems of plastic deformation and elastic force attenuation in the disc spring technical solution do not occur, thereby making the shaft mechanism with the elastic member of the present application have a higher service life.

[0068] Compared with using a disc spring to provide an axial force, the elastic member in the present application is an integrally formed barrel body 1, and by providing sequentially connected cantilever beam bodies 10 on the barrel body 1, the barrel body 1 can be elastically deformed axially, each cantilever beam body 10 is integrally formed and does not need to be assembled, and can be installed on the mandrel at one time, thereby improving the assembly efficiency of the shaft mechanism.

[0069] In addition, each disc spring can have a large difference in stiffness due to different materials, thicknesses and shapes, resulting in significant overall differences after assembly, uneven yield levels, and large differences in consistency experience for the same product. However, using the elastic member defined in the present application can rely on the high life interval (about 100,000 times) of the flexible material itself to provide a more long-acting and stable shaft torque experience, thereby improving the experience consistency of the electronic device.

[0070] The elastic member in the present application can be an equal-stiffness structure or a non-equal-stiffness structure. In the elastic member in the present application, all gaps formed between adjacent cantilever beam bodies include first gaps and second gaps, i.e. a part of the gaps formed between adjacent cantilever beam bodies 10 are first gaps, and another part of the gaps formed between adjacent cantilever beam bodies 10 are second gaps. When the barrel body is subjected to an axial force, the first gaps deform first, and when the axial force is greater than a predetermined value, the second gaps deform again. In this example, by setting the first gaps and the second gaps as structures with different sizes or shapes, for example, the axial dimension and the circumferential dimension of the first gaps can be greater than the axial dimension and the circumferential dimension of the second gaps, so that a variable-stiffness elastic member in which the first gaps deform first and then the second gaps deform can be realized to meet the needs of different structures.

[0071] The barrel body 1 in the present application comprises a first barrel portion 1-1 and a second barrel portion 1-2 at the two axial ends, each cantilever beam body 10 is located between the first barrel portion 1-1 and the second barrel portion 1-2, the first barrel portion 1-1 and the second barrel portion 1-2 are connected to form a whole through the cantilever beam bodies 10, and the cantilever beam bodies 10 at the two axial ends can be fixedly connected to the barrel portions on the corresponding side. The first barrel portion 1-1 and the second barrel portion 1-2 are annular structures, and the width along the axial direction can be greater than the width of the cantilever beam body 10. The first barrel portion 1-1 and the second barrel portion 1-2 can be designed as a structure that abuts against the external member, and through the abutment of the annular structure of the first barrel portion 1-1 and the second barrel portion 1-2 and the external member, the overall stress of the barrel body 1 can be optimized, which is beneficial to the uniform compression of the barrel body 1 along the axial direction.

[0072] Please refer to Figure 5 and Figure 6 , Figure 5 is a structure diagram of the elastic member in the first example of the present application, Figure 6 is Figure 5 the unfolded view of the elastic member shown in the L line.

[0073] In the present application, the barrel body 1 comprises a cantilever unit, and the number of the cantilever unit can be one or two or more. The number of the cantilever unit is determined according to the specific use environment, as long as the use requirement is met. The cantilever unit comprises a first support 11 and a second support 12, both of which have a predetermined length in the axial direction, the first support 11 is fixedly connected to the first barrel portion 1-1, and the second support 12 is fixedly connected to the second barrel portion 1-2. In the non-compressed state, the first support 11 and the second support 12 have a predetermined spacing H along the axial direction at the opposite ends; the first support 11 and the second support 12 can have substantially the same shape and structure, of course, they can also be different. The first support 11 and the second support 12 are each provided with at least one cantilever beam body 10, the cantilever beam body 10 is a cantilever beam, one end of the cantilever beam body 10 is fixedly connected to the first support 11 and the second support 12, and the non-fixed ends of adjacent cantilever beam bodies 10 are fixedly connected through a first connecting body. The cantilever beam structure is simple, and when compressed in the axial direction, the cantilever beams are easily elastically deformed.

[0074] The first support 11 and the second support 12 comprise two side walls arranged in the circumferential direction, and the first support 11 and the second support 12 can be provided with cantilever beams on only one side wall, of course, the first support 11 and the second support 12 can be provided with cantilever beams on both sides, Figures 5 to 8 a specific example in which the first support 11 and the second support 12 are provided with cantilever beams on both sides is shown, and the cantilever beams on both sides are beneficial to the uniform deformation of the barrel body 1 in the circumferential direction, avoiding eccentricity.

[0075] In the first example, only one cantilever beam is provided on each of the two side walls of the first pillar 11 and the second pillar 12. Please refer to... Figure 5 and Figure 6 It is understood that the free ends of the cantilever beams on the same side are connected by a first connecting body. The shape of the first connecting body can take various forms, such as an axially extending straight section or an arc-shaped section. The diameter of the arc-shaped section can be larger than the axial spacing between adjacent cantilever beams 10, which is beneficial for elastic deformation between adjacent cantilever beams. The structure of connecting adjacent cantilever beams 10 by a straight section is relatively simple.

[0076] Figure 5 and Figure 6 The image shows an example where the suspended beam 10 is a uniformly wide arc shape. A uniformly wide structure is relatively simple, has a simple manufacturing process, and low production costs. Of course, the suspended beam 10 can also be a non-uniformly wide arc shape along its extension direction, such as... Figure 7 and Figure 8 As shown.

[0077] Please refer to Figures 7 to 8 , Figure 7 This is a schematic diagram of the elastic element in the first example of this application. Figure 8 for Figure 7 The diagram shows the unfolded view of the elastic element after separation along line L.

[0078] In the second example, both the first pillar 11 and the second pillar 12 have two or more suspended beams 10 on their side walls. Figure 6 , Figure 7 and Figure 8 The figure shows a specific example where there are two cantilever units, with two suspended beams 10 on each side wall of the first support column 11 and the second support column 12, and the two cantilever units are symmetrical about line S2. Of course, the number of suspended beams 10 on each side wall of the first support column 11 and the second support column 12 is not limited to that shown in the figure, and can also be three or more. Similarly, the number of cantilever units is not limited to two, and can be three or more. The cantilever units are arranged circumferentially, which is beneficial to the coaxial compression deformation of the cylinder body 1. The gap 103 between adjacent cantilever units can be reasonably selected.

[0079] In the second example, the maximum axial distance between the axially adjacent suspended beams 10 of the first pillar 11 and the second pillar 12 is the first gap H. The suspended beams 10 located at the inner ends of the first pillar 11 and the suspended beams 10 located at the inner ends of the second pillar 12 form a first gap. Under non-stress conditions, the first gaps on both sides of the same pillar are connected through the gap between the first pillar and the second pillar to form a first through hole 102. A second gap is formed between the axially adjacent suspended beams 10 on the first pillar 11 and between the axially adjacent suspended beams 10 on the second pillar 12.Figure 7 The maximum axial distance H of the first gap is greater than the maximum axial distance h of the second gap. The maximum distance of the second through hole 101 between the axially adjacent cantilever beam bodies 10 on the first pillar 11 is the second distance h, and the maximum distance of the second through hole 101 between the axially adjacent cantilever beam bodies 10 on the second pillar 12 is also the second distance h, and the first distance H is greater than the second distance h. In this way, when axially compressed, the space (the first through hole 102) surrounded by the first pillar 11, the second pillar 12 and the adjacent cantilever beam bodies 10 is compressed and deformed first, and then the second through hole 101 between the adjacent cantilever beam bodies 10 on the cylinder pillar is deformed, thereby achieving the variable stiffness requirement. The maximum distance of the second through hole 101 and the first through hole 102 can be located on the same axis S4. Of course, at least two rows of second through holes can also be arranged along the axial direction, and each second through hole 101 in the same row is located in the same cross section, and the transverse center lines S1 of the second through holes 101 in the same row are collinear. The first through hole 102 can be a structure symmetrically arranged along the transverse center S of the cylinder main body 1.

[0080] The first pillar 11 and the second pillar 12 in the present application can be completely the same, the first pillar 11 and the second pillar 12 are oppositely arranged, and the projections of the two in the plane perpendicular to the axial direction completely coincide. The cantilever beam bodies 10 on the two sides of the first pillar 11 and the second pillar 12 can be symmetrically arranged about the axial center plane S3 of the cantilever unit. The position of the axial center plane S3 is shown in Figure 6 .

[0081] In the present application, each cantilever beam body 10 arranged along the axial direction is arranged in parallel and has the same size and shape. The distance between the adjacent cantilever beam bodies 10 on the same pillar can be the same, of course, the distance between the adjacent cantilever beam bodies 10 on the same pillar can also be different, that is, the position with a larger axial distance can be deformed first when axially compressed, and the position with a smaller axial distance can be deformed later, so as to achieve the variable stiffness of the cylinder main body 1. Of course, the gap formed between the adjacent cantilever beam bodies can be an equal-width gap, such as Figure 5 , Figure 6 , Figure 14 and Figure 15 shown in the examples, of course, it can also be a non-equal-width gap, such as Figures 7 to 12 , Figure 16 shown in the examples.

[0082] Please refer to Figures 9 to 12 , Figure 9 for the structure schematic diagram of the elastic member in the third example of the present application; Figure 10 is the A direction schematic diagram of Figure 9 ; Figure 11 is the B direction schematic diagram of Figure 9 ; Figure 12 is the structure schematic diagram of the elastic member after being separated and unfolded along the L line in Figure 10 .

[0083] In the third example, the number of cantilever units is at least two, and the free ends of the cantilever beams of each cantilever unit extending towards each other are fixed to the same first connecting body, please refer to Figure 9 and Figure 12 It is understood that Figure 9 A specific example with two cantilever units is shown in FIG. 1, the free ends of the cantilever beams on the adjacent side walls of the two first struts 11 and the two second struts 12 are connected to the same first connecting body 13. The cylinder body 1 of this structure has high rigidity and high axial stability during deformation, and the free ends of the cantilever beams on the same side of the two cantilever units connected to the same first connecting body 13 can also withstand a larger axial elastic force.

[0084] In this application, the axially adjacent cantilever beams 10 on the same strut and the struts and first connecting bodies 13 connected to the ends thereof enclose a second through hole 101, the maximum size of the second through hole 101 along the circumferential direction is greater than the maximum size of the second through hole 101 along the axial direction. In this application, the above-mentioned cylinder body 1 is prone to deformation, and has good axial stability during deformation. The edge position of the second through hole 101 extending along the circumferential direction can be provided with an arc shape or a rounded corner connection to reduce stress concentration during deformation of this position and improve the service life of the cylinder body 1.

[0085] The shape of the second through hole 101 can have various forms, such as an oval shape, a circular shape, or an N-sided polygon, which can be a triangle, a quadrilateral, or a pentagon, or a polygon with more than five sides, and adjacent side walls of each polygon are connected by an arc. A specific example of a second through hole 101 is given below, and those skilled in the art should understand that the shape of the second through hole 101 is not limited to the description herein, but can also be other structures.

[0086] In this application, each cantilever beam 10 includes a first segment 10a and a second segment 10b connected along the circumferential extension direction thereof, and the closer the first segment 10a and the second segment 10b are to the connection position thereof, the smaller the axial thickness thereof. In this way, the second through hole 101 formed by the adjacent cantilever beams 10 can be a prismatic shape, and the through hole of the prismatic structure can meet the requirements of high rigidity and large elasticity, and the service life of the cylinder body 1 is relatively high.

[0087] Please refer to Figures 13 to 17 , Figure 13 is a structural schematic diagram of the elastic member in the fourth example of the present application; Figure 14 is Figure 13 is a structural schematic diagram of the elastic member A shown in FIG. 1; Figure 15 is Figure 13 is a structural schematic diagram of the elastic member shown in FIG. 1 after being separated and expanded along the L line; Figure 16 is a structural schematic diagram of the elastic member in the fifth example of the present application; Figure 17 is Figure 16The structure of the elastic member after being separated along the L line is shown in the structure diagram.

[0088] In the fourth example, each of the suspended beam bodies 10 is a ring-shaped beam body, and the number of the ring-shaped beam bodies is at least one. All the ring-shaped beam bodies divide the space between the first cylinder part 1-1 and the second cylinder part 1-2 into N ring-shaped gaps, which are sequentially the first ring-shaped gap to the Nth ring-shaped gap, such as Figure 13 、 Figure 14 and Figure 15 The number of the ring-shaped beam bodies is 7, and the space between the first cylinder part 1-1 and the second cylinder part 1-2 is divided into eight ring-shaped gaps, which are respectively the first ring-shaped gap 151, the second ring-shaped gap 152, the third ring-shaped gap 153, the fourth ring-shaped gap 154, the fifth ring-shaped gap 155, the sixth ring-shaped gap 156, the seventh ring-shaped gap 157, and the eighth ring-shaped gap 158. Figure 16 and Figure 17 The number of the ring-shaped beam bodies is 4, and the space between the first cylinder part 1-1 and the second cylinder part 1-2 is divided into five ring-shaped gaps. The number of the ring-shaped beam bodies is not limited to the above number, and can be other numbers.

[0089] In the present application, at least two second connecting bodies 14 are arranged in each ring-shaped gap. The first cylinder part 1-1 is connected to the adjacent ring-shaped beam body through the second connecting body 14 inside the first ring-shaped gap, the second cylinder part 1-2 is connected to the adjacent ring-shaped beam body through the second connecting body inside the Nth ring-shaped gap, and the adjacent ring-shaped beam bodies are connected through the second connecting body therebetween. The second connecting bodies 14 in the same ring-shaped gap can be two, three, or more than three. In combination with Figure 13 and Figure 15 It is understood that the specific example of arranging two second connecting bodies 14 in the same ring-shaped gap is that the first ring-shaped gap 151 is divided into two first sub-gaps 1511 by the two second connecting bodies 14, the second ring-shaped gap 152 is divided into two second sub-gaps 1521, the third ring-shaped gap 153 is divided into two third sub-gaps 1531, the fourth ring-shaped gap 154 is divided into two fourth sub-gaps 1541, the fifth ring-shaped gap 155 is divided into two fifth sub-gaps 1551, the sixth ring-shaped gap 156 is divided into two sixth sub-gaps 1561, the seventh ring-shaped gap 157 is divided into the seventh sub-gap 1571, and the eighth ring-shaped gap 158 is divided into two eighth sub-gaps 1581.

[0090] Each sub-gap can be of equal width, or can be of non-equal width, i.e., the sub-gaps in the same layer can be of the same shape and size, or can be different. Furthermore, the sub-gaps in different layers can be of the same shape and size, or can be different. Figures 13 to 15 The specific example of the axial equal width of each sub-gap is shown in the figure, Figure 16And Figure 17 The specific example of the same annular gap axial non-equal width is shown, and the example of the waist structure of the annular gap is wide at both ends and narrow in the middle.

[0091] In the present application, the second connecting bodies in each annular gap are uniformly arranged in the circumferential direction, and the second connecting bodies 14 inside adjacent annular gaps are staggered, and the projections of the second connecting bodies 14 of adjacent annular gaps in the plane perpendicular to the axial direction at least partially do not coincide; Figures 13 to 17 The schematic diagram of the two second connecting bodies in the same annular gap uniformly arranged in the circumferential direction is shown in the middle.

[0092] The annular beam body is a whole structure, and has good synchronous deformation ability and good stability when subjected to axial force.

[0093] The angle between the central axis planes of the two second connecting bodies in the former annular gap and the central axis planes of the two second connecting bodies in the latter annular gap is 80° to 100°, and the specific example of the angle between the central axis planes of the second connecting bodies of the adjacent two layers being 90° is shown in the figure.

[0094] The rotating shaft mechanism and the electronic device in the present application have the elastic member described above, and therefore have the technical effects of the elastic member described above.

[0095] The electronic device in the present application includes the rotating shaft structure of the above-described embodiments, and therefore has the technical effects of the rotating shaft structure described above.

[0096] The principles and implementation modes of the present application are described by using specific examples in the present application, and the above description of the embodiments is only used to help understand the method of the present application and its core idea. It should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, the present application can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A pivot structure for enabling relative rotation of a first member and a second member, characterized by, The utility model relates to a kind of elastic coupling, including: Core shaft, the core shaft is used to be fixed with the first component; Rotary piece, the rotary piece is rotatably connected with the core shaft, and is used to be fixed with the second component; Elastic member, the elastic member includes: Cylinder main body, the cylinder main body is integrally formed and has a central through hole, the cylinder main body is sleeved on the core shaft, the cylinder main body includes at least two cantilever beam bodies, each cantilever beam body is arranged at intervals along the axial direction, and each cantilever beam body extends along the circumferential direction, the local position of adjacent cantilever beam bodies is fixedly connected, so that the cylinder main body can be elastically deformed along the axial direction under the action of axial force;The cylinder main body includes first cylinder body part and second cylinder body part at axial both ends, both are annular structure, each cantilever beam body is located between the first cylinder body part and the second cylinder body part, the first cylinder body part and the second cylinder body part are connected to form a whole by each cantilever beam body, the cantilever beam body at axial both ends in each cantilever beam body can be fixedly connected with the cylinder body part on the corresponding side; At least two cantilever units, the cantilever unit includes oppositely arranged first support and second support, both have predetermined length in the axial direction, the first support is fixedly connected with the first cylinder body part, the second support is fixedly connected with the second cylinder body part, in non-compressed state, the first support and the second support have predetermined spacing along the axial direction at opposite ends;The first support and the second support both include two side walls arranged along the circumferential direction, the cantilever unit further includes at least two or more than two cantilever beam bodies provided on each side wall, the cantilever beam body is a cantilever beam, one end of the cantilever beam body is fixedly connected to the first support or the second support, the cantilever unit further includes first connector, the free end of all cantilever beam bodies on the same side of the first support and the second support is connected to the same first connector, and the first connector is suspended between the first cylinder body part and the second cylinder body part;Each cantilever unit is arranged at intervals along the circumferential direction, and has a gap between adjacent cantilever units; Rough and smooth assembly, when the core shaft and the rotary piece relatively rotate, the rough and smooth assembly can compress the elastic member to generate axial deformation, so that the first component and the second component are arranged at an angle.

2. The pivot structure of claim 1, wherein The first connector is an arc segment or a straight segment.

3. The pivot structure of claim 1, wherein The spacing between adjacent cantilever beam bodies is equal or unequal.

4. The pivot structure according to claim 3, wherein The cantilever beam bodies at the inner end of the first support and the cantilever beam bodies at the inner end of the second support form a first gap, and in non-stressed state, the first gap on the same side of the first support and the second support is communicated through the gap between the first support and the second support;The second gap is formed by the cantilever beam bodies axially adjacent to each other on the first support and the second support, and the maximum axial spacing of the first gap is greater than that of the second gap.

5. The pivot structure according to claim 4, wherein The first pillar, the second pillar, the overhanging beam body at the inner end of the first pillar, the overhanging beam body at the inner end of the second pillar enclose a first through hole, the pillar connected with the two ends of the overhanging beam body and the first connecting body axially adjacent to the overhanging beam body on the same pillar enclose a second through hole, the axial maximum size and the circumferential maximum size of the first through hole are greater than the axial maximum size and the circumferential maximum size of the second through hole respectively, the first through hole comprises the first gap, and the second through hole is the second gap.

6. The pivot structure according to any one of claims 1 to 5, wherein The axial width of each overhanging beam body is equal or unequal along the extension direction of the overhanging beam body, so as to form a gap with equal width or non-equal width between adjacent overhanging beam bodies.

7. The pivot structure of claim 6, wherein Along the extension direction of the overhanging beam body, each overhanging beam body comprises a first segment and a second segment connected with each other, and the axial thickness of the first segment and the second segment is smaller when being closer to the connection position of the two segments, so as to form a prismatic gap between adjacent overhanging beam bodies.

8. The pivot structure according to any one of claims 1 to 5, wherein The cantilever units are arranged uniformly in the circumferential direction.

9. The pivot structure according to any one of claims 1 to 5, wherein All gaps formed between adjacent overhanging beam bodies comprise a first gap and a second gap, the first gap deforms first when the barrel body is subjected to an axial force, and the second gap deforms again when the axial force is greater than a predetermined value.

10. The pivot structure according to any one of claims 1 to 5, wherein The first pillar and the second pillar are completely coincident in the internal projection in the plane perpendicular to the axial direction, and the overhanging beam bodies on both sides of the first pillar and the second pillar are arranged symmetrically about the axial center of the cantilever unit.

11. The pivot structure according to any one of claims 1 to 5, wherein The barrel body is a cylindrical barrel.

12. An electronic device, comprising: The first component and the second component are rotatably connected through the shaft structure.

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