Spring, damping assembly and electronic equipment

Abstract

The invention discloses a spring, a damping assembly and electronic equipment, and the electronic equipment can comprise handheld equipment, vehicle-mounted equipment, wearable equipment and terminal equipment or can be connected to any one of a wireless modem, a cellular phone, a smart phone, a personal digital assistant, a computer, a tablet personal computer, a notebook computer and the like. Under the same space condition, the rectangular-section spiral spring is higher in rigidity and absorbs more energy, the damping force generated by the damping assembly is improved, and the hand feeling when a user folds or unfolds the electronic equipment is improved. Under the condition that the same damping force is met, the rectangular-section spiral spring is smaller in occupied space, and arrangement of other components of the electronic equipment is facilitated.

Description

[0001] This application claims the priority of the Chinese patent application filed with the State Intellectual Property Office of China on September 8, 2023, with application number 202322453384.X, and invention name “A spring, damping assembly and electronic device”, the entire contents of which are incorporated by reference in the embodiments of this application. Technical Field

[0002] The embodiments of the present application relate to the technical field of electronic products, and in particular to a spring, a damping assembly and an electronic device. Background Art

[0003] Currently, electronic devices such as notebooks and foldable screen mobile phones include a first body, a hinge mechanism, and a second body, wherein the first body and the second body are folded and unfolded relative to each other through the hinge mechanism. Figures 1 to 3 The electronic equipment shown understands, Figures 1 to 3 Schematic diagrams showing an electronic device in a flattened state, an intermediate unfolded state, and a folded state are shown respectively.

[0004] A damping assembly is usually provided in the rotating shaft mechanism, which can improve the rotation feel of the rotating shaft mechanism and can also make the first body and the second body hover to a predetermined deployment position. Currently, the damping assembly is usually a convex-concave surface match, and the cylindrical spring provides the axial force of the convex-concave surface match, and the cross section of the spring wire of the cylindrical spring is circular.

[0005] On the premise of achieving normal functions of electronic equipment, how to reduce the volume of the damping component as much as possible is a technical issue that technicians in this field always pay attention to. Summary of the invention

[0006] The embodiments of the present application provide a spring with greater rigidity and smaller space occupation, as well as a damping assembly and an electronic device including the spring.

[0007] In a first aspect, an embodiment of the present application provides a spring, including a spring wire, which is spirally wound N times to form a columnar structure, wherein N is an integer greater than or equal to 4, for example, N is equal to 4, 5, 6, 7, 8 or an integer greater than 8. The cross section of the spring wire is a rectangle, and the rectangle includes adjacent first and second sides, the length of the first side ranges from 0.3 mm to 0.55 mm, and the length of the second side ranges from 0.3 mm to 0.55 mm. Ideally, the first side and the second side of the rectangle are perpendicular, but due to limitations of processing technology and other conditions, the first side and the second side can be roughly perpendicular, and a certain deviation is allowed as long as it does not affect the overall effect.

[0008] Compared with a spring wire with a circular cross-section, under the same spatial conditions, a helical spring with a rectangular cross-section has a greater stiffness and absorbs more energy, thereby increasing the damping force generated by the damping component, which is beneficial for improving the user's feel when folding or unfolding the electronic device; while meeting the same damping force, a helical spring with a rectangular cross-section occupies less space, which is beneficial for the layout of other components of the electronic device.

[0009] In one example, the length of the first side is greater than the length of the second side, the first side extends along the axial direction of the columnar structure, the length of the first side ranges from 0.45 mm to 0.55 mm, and the length of the second side ranges from 0.3 mm to 0.35 mm. The space occupied by the spring formed by the spring wire within the above range is relatively small in the circumferential direction, which can meet the use requirements of most electronic devices.

[0010] In one example, the first side and the second side are connected by an arc, the radius of the arc is greater than or equal to 0.15 mm, and after the arc is processed, the length of the first side is greater than or equal to 0.36 mm. The corners of the rectangular cross section in the embodiment of the present application are arc-shaped, where the stress is small, which is conducive to improving the working performance and service life of the spring.

[0011] In one example, the inner ring of the columnar structure is cylindrical, and the diameter of the inner ring ranges from 0.88mm to 0.95mm. The inner ring of the columnar structure is cylindrical in shape. The spring within this size range has a small volume and high working performance, which can meet the small volume design requirements of electronic equipment.

[0012] In one example, the outer ring of the columnar structure is cylindrical, and the outer ring of the columnar structure is cylindrical, and the diameter of the outer ring ranges from 1.65 mm to 1.72 mm. The spring within this size range has a small volume and high working performance, which can meet the small volume design requirements of electronic equipment.

[0013] In one example, in a non-compressed state, the length of the columnar structure along the axial direction ranges from 7.6 mm to 7.8 mm. Springs within this length range can basically meet the damping force requirements of most electronic devices and occupy a small space.

[0014] In one example, the effective number of turns in the columnar structure ranges from 6 to 8 turns, and the total number of turns in the columnar structure ranges from 8 to 10 turns. The number of spring turns within this range can meet the damping performance requirements and occupy less space, which is beneficial to the overall structural layout of the electronic device.

[0015] In one example, the intercept of the spring ranges from 0.7 mm to 0.9 mm. In this example, the intercept of the spring takes into account both usage requirements and small space occupation.

[0016] In one example, the columnar structure includes a first spring wire coil and a second spring wire coil at two ends, and the end faces of the first spring wire coil and the second spring wire coil that are relatively far away are planes, and the planes are perpendicular to the axial direction of the columnar structure. In this example, the two end faces of the columnar structure are planes, which is conducive to increasing the contact area between the spring and the components on both sides thereof, improving the reliability of force transmission, and improving the stability of the system.

[0017] In one example, the minimum thickness of the first spring wire coil and the second spring wire coil is greater than or equal to 0.4 times the axial length of the rectangular cross section, which can improve the stability of the system formed by the spring.

[0018] In one example, the angle of the plane on the circumference is greater than 180 degrees, so as to maximize the contact area between the spring and its contact member and improve the stability of the system in which the spring is located.

[0019] In the second aspect, an embodiment of the present application also provides a damping assembly, including a bracket, a shaft, a slider and a spring of any of the above items, the spring is nested in the shaft, the slider slides along the shaft, and under the action of the spring, the concave and convex matching surfaces of the bracket and the slider abut against each other.

[0020] In one example, the bracket includes a first bracket and a second bracket, the shaft includes a first shaft and a second shaft, the first bracket and the second bracket include relatively close first ends, the first end of the first bracket is rotatably connected to the first shaft, the first end of the second bracket is rotatably connected to the second shaft, the slider is slidably connected to the first shaft and the second shaft at the same time, and the slider and the first bracket and the second bracket are both concave and convex matched; in this embodiment, the slider slides along the first shaft and the second shaft, the structure is simple, the first bracket and the second bracket are also respectively connected to the first shaft and the second shaft, and the arrangement is compact.

[0021] In one example, the ends of the first bracket and the second bracket that are relatively far away are the second ends, and the second ends of the first bracket and the second bracket are respectively used for sliding connection with the corresponding side door panels of the electronic device. Driven by the door panels on both sides, the first bracket and the second bracket can rotate relative to the corresponding shaft body, and the bracket and the door panel have a relatively high degree of movement synchronization.

[0022] In one example, the first bracket and the second bracket both have a first sleeve and a second sleeve, which are arranged axially at intervals, and the slider includes a first slider and a second slider, which are both slidably sleeved on the first shaft body and the second shaft body, and the first shaft body and the second shaft body are sleeved with a spring, and the spring is pressed between the first slider and the second slider, and the first slider is concave-convexly matched with the first sleeve of the first bracket and the first sleeve of the second bracket, and the second slider is concave-convexly matched with the second sleeve of the first bracket and the second sleeve of the second bracket. In this example, sliders are provided on both sides of the spring, as well as cam portions that are concave-convexly matched with the sliders, so as to improve the damping force, and the damping component has a compact structure and occupies a small space.

[0023] In one example, arc-shaped concave surfaces are further provided on opposite sides of the first bracket and the second bracket to avoid the springs and sliders on the corresponding sides.

[0024] In a third aspect, an embodiment of the present application further provides an electronic device, comprising any of the springs described above, or any of the damping components described above.

[0025] In one example, the electronic device includes a first body, a second body and a hinge mechanism, under the action of the hinge mechanism, the first body and the second body can be folded and unfolded relative to each other, and the hinge mechanism includes at least one damping component.

[0026] In one example, the electronic device is a folding screen mobile phone, and the first body and the second body are two middle frames of the folding screen mobile phone respectively;

[0027] Or the electronic device is a notebook computer, and the first body and the second body are respectively a display side and a keyboard side of the notebook computer.

[0028] The damping assembly and the electronic device provided in the embodiment of the present application include the above-mentioned spring, so the damping assembly and the electronic device also have the above-mentioned technical effect of the spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the structure of an electronic device in an unfolded state according to an embodiment of the present application;

[0030] Figure 2 For Figure 1 A schematic diagram of the structure of the electronic device shown is in an intermediate unfolded state;

[0031] Figure 3 For Figure 1 A schematic diagram showing an electronic device in a folded state;

[0032] Figure 4 for Figure 1 A schematic diagram of the structure of a rotating shaft mechanism in the electronic device shown;

[0033] Figure 5 for Figure 4 A schematic diagram of the structure of the damping assembly in the rotating shaft mechanism shown;

[0034] Figure 6 for Figure 4 An exploded schematic diagram of the damping assembly shown;

[0035] Figure 7 for Figure 6 A schematic diagram of the spring in the damping assembly shown;

[0036] Figure 8 for Figure 7a front view of the spring shown;

[0037] Fig. 9 for Figure 8 AA section view of the spring shown;

[0038] Fig.10 for Figure 7 Schematic diagram of the cross section of the middle spring wire;

[0039] Fig.11 This is a schematic cross-sectional view of a spring wire in another embodiment of the present application;

[0040] Fig.12 for Fig. 9 A partial enlarged view of A1 in the middle;

[0041] Fig.13 for Figure 8 Center B view.

[0042] in, Figures 1 to 13 middle:

[0043] 110 first body; 120 second body; 200 display screen; 300 shaft mechanism; 310 base; 320 first swing arm; 320 second swing arm; 340 first door panel; 350 second door panel; 360 synchronization component; 370 damping component;

[0044] 1 spring; 10 spring wire; 11 effective spring coil; 12 first spring wire coil; 13 second spring wire coil; 121 plane; 1211 first boundary line; 1212 second boundary line;

[0045] 2 bracket; 21 first bracket; 21a inner hole; 22 second bracket; 201 first sleeve; 202 second sleeve; 203 convex column; 204 arc-shaped concave surface;

[0046] 3 axis body; 31 first axis body; 32 second axis body; 301 slot;

[0047] 4 slider; 41 first slider; 42 second slider; 401 concave-convex surface; 4a through hole

[0048] 5. Circlip Specific embodiments

[0049] In order to enable those skilled in the art to better understand the technical solutions of the embodiments of the present application, the embodiments of the present application are further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0050] The embodiment of the present application provides a spring with greater rigidity and smaller space occupation, which can be applied to electronic devices. Of course, the spring of the embodiment of the present application can also be applied to sliding doors, accessory hinges, etc. The electronic device can be a mobile phone, wearable device, vehicle-mounted device, augmented reality (AR) / virtual reality (VR) device, notebook computer, ultra-mobile personal computer (UMPC), netbook, personal digital assistant (PDA) and other mobile terminals, or it can also be a digital camera, SLR camera / micro-single camera, sports camera, PTZ camera, drone and other professional shooting equipment. The embodiment of the present application does not limit the specific type of electronic device. For the sake of easy understanding, the following takes the electronic device as a folding screen mobile phone as an example to continue to introduce the technical solution and technical effects.

[0051] Please see again Figure 1 , Figure 1 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

[0052] The electronic device in the embodiment of the present application includes a first body 110, a second body 120, a display screen 200 and a hinge mechanism 300. The first body 110 and the second body 120 are respectively located on both sides of the hinge mechanism 300. Under the action of the hinge mechanism 300, the first body 110 and the second body 120 can be folded and unfolded relative to each other, thereby realizing the folding and unfolding of the electronic device. Figures 1 to 3 Schematic diagrams showing an electronic device in a flattened state, an intermediate unfolded state, and a folded state are shown respectively. Figure 1 In the figure, a foldable screen mobile phone is used as an example, and the first body 110 and the second body 120 are two middle frames of the foldable screen mobile phone. When the electronic device is a laptop computer, the first body 110 can be the display side of the laptop computer, and the second body 120 can be the keyboard side of the laptop computer.

[0053] In the embodiment of the present application, the display screen 200 includes a display module and a transparent cover plate. The display module can display images and videos, etc. The display module can use a liquid crystal display 200 (liquid crystal display, LCD), an organic light-emitting diode (organic light-emitting diode, OLED), an active matrix organic light-emitting diode or an active matrix organic light-emitting diode (active-matrix organic light emitting diode, AMOLED), a flexible light-emitting diode (flex light-emitting diode, FLED), a quantum dot light-emitting diode (quantum dot light-emitting diodes, QLED), an electrophoretic display technology (e-Ink, electrophoretic, etc.). The display screen 200 of the current folding screen electronic device mostly uses OLED. The transparent cover plate covers the outside of the display module to protect the display module. The transparent cover plate can be a glass cover plate, and of course it can also be other transparent materials that can play a protective function, for example, the transparent cover plate can be a transparent polyimide. The display screen 200 can also have a touch function, that is, the display screen 200 can be a touch screen.

[0054] Driven by the first body 110 and the second body 120 , the display screen 200 can be relatively folded and unfolded.

[0055] Please refer to Figure 4 In the embodiment of the present application, the rotating shaft mechanism 300 includes a base 310, a first door panel 340, a second door panel 350, a first swing arm 320, and a second swing arm 330. The base 310 is located between the first door panel 340 and the second door panel 350. The first swing arm 320 and the second swing arm 330 are symmetrically connected to the two sides of the base 310. The first swing arm 320 is connected between the first door panel 340 and the base 310. The first swing arm 320 and the first door panel 340 are also connected to rotate, so that the first door panel 340 can rotate around the base 310 through the first swing arm 320. The second swing arm 330 is connected between the second door panel 350 and the base 310. The second swing arm 330 and the second door panel 350 are also connected to rotate, so that the second door panel 350 rotates around the base 310 through the second swing arm 330. Among them, the rotation of the swing arm and the door panel, and the rotation of the swing arm and the base 310 can be achieved through arc-shaped slide grooves and arc-shaped blocks, and of course can also be achieved through other forms.

[0056] The first door panel 340 and the second door panel 350 may have the same structure, or may have different structures. Similarly, the first swing arm 320 and the second swing arm 330 may have the same structure, or may have different structures.

[0057] In the embodiment of the present application, the first door panel 340 and the second door panel 350 are fixedly connected to the first body 110 and the second body 120 respectively, or the first door panel 340 and the second door panel 350 may be part of the first body 110 and the second body 120 .

[0058] The shaft mechanism 300 further includes a synchronization component 360 and a damping component 370. The synchronization component 360 is used to realize the synchronous rotation of the first door panel 340 and the second door panel 350. The synchronization component 360 can be a gear mechanism, or a screw mechanism. Figure 4 The synchronous assembly 360 is shown in the figure as a gear mechanism. The number and position of the synchronous assembly 360 can be reasonably selected according to the specific structure of the rotating shaft mechanism 300. Figure 4 An example of setting two sets of synchronization components 360 is shown in FIG.

[0059] In the embodiment of the present application, the damping assembly 370 is used to generate a damping force for the rotation of the first door panel 340 and the second door panel 350. Figure 5 and Figure 6 The damping assembly 370 includes a first shaft body 31, a second shaft body 32, two springs 1, a first slider 41, a second slider 42, a first bracket 21, and a second bracket 22. The first shaft body 31 and the second shaft body 32 are arranged parallel to the axial direction of the rotating shaft mechanism 300, and both are installed on the base 310. Specifically, the two ends of the first shaft body 31 and the second shaft body 32 can be connected to the mounting holes of the base 310. Each of the first slider 41 and the second slider 42 penetrates the first shaft body 31 and the second shaft body 32 at the same time, that is, each of the first slider 41 and the second slider 42 has two through holes 4a, which are respectively sleeved on the first shaft body 31 and the second shaft body 32. Each of the first slider 41 and the second slider 42 is supported on the first shaft body 31 and the second shaft body 32, and can slide relative to the two shaft bodies along the axial direction. The first shaft body 31 and the second shaft body 32 are both sleeved with springs 1, and the two springs 1 are press-fitted between the first slider 41 and the second slider 42. The end surfaces of the first sliding block 41 and the second sliding block 42 that are relatively far away from each other each have two concave-convex surfaces 401 .

[0060] The relatively close ends of the first bracket 21 and the second bracket 22 are defined as first ends, and the first end of the first bracket 21 is rotatably connected to the first shaft 31, and the first end of the second bracket 22 is rotatably connected to the second shaft 32. Specifically, the first bracket 21 and the second bracket 22 each have two sleeves spaced apart in the axial direction, and the two sleeves of the first bracket 21 are coaxial with the first shaft 31, and the first shaft 31 passes through the two sleeve inner holes 21a of the first bracket 21. The two sleeves of the second bracket 22 are coaxial with the second shaft 32, and the second shaft 32 passes through the two sleeve inner holes 21a of the second bracket 22. For the convenience of description, the embodiment of the present application defines two sleeves arranged along the axial direction as the first sleeve 201 and the second sleeve 202 respectively. The first slider 41 is located on one side of the two first sleeves 201, and the second slider 42 is located on one side of the two second sleeves 202. Under the action of the restoring force of the spring 1, the two concave and convex surfaces 401 of the first slider 41 are in concave-convex abutment with the two first sleeves 201, and the two concave and convex surfaces 401 of the second slider 42 are in concave-convex abutment with the two second sleeves 202.

[0061] The first sliding block 41 and the second sliding block 42 may have the same structure, and the first bracket 21 and the second bracket 22 may also have the same structure.

[0062] The axial limitation of the first shaft body 31, the second shaft body 32 and the first bracket 21, the second bracket 22 can be achieved by means of a retaining spring 5 and a slot 301. For example, the first shaft body 31 and the second shaft body 32 are provided with a slot 301 at both ends, and the retaining spring 5 is installed inside the slot 301. The retaining springs 5 ​​at both ends limit the axial movement of the first bracket 21, the second bracket 22 relative to each shaft body 31.

[0063] From the above description, it can be known that the damping assembly 370 includes a bracket 2, a shaft 3, a slider 4 and a spring 1. The bracket and the slider are matched in a concave-convex manner, and under the restoring force of the spring 1, the bracket 2 and the slider 4 are abutted against each other in a concave-convex matching surface. The form of the bracket 2 is not limited to the structure of the first bracket 21 and the second bracket 22 described in the embodiment of the present application. The number of the bracket 2 can also be one, and the number of the slider 4 can also be one, as long as it can provide the rotation damping force of the two rotating parts.

[0064] The second ends of the first bracket 21 and the second bracket 22 which are relatively far away may be both provided with a boss 203, and the boss 203 slidably cooperates with the corresponding door plate. For example, a slide groove (not shown in the figure) is provided on the door plate, and the boss 203 is slidably arranged inside the slide groove.

[0065] Of course, arc-shaped concave surfaces 204 are also provided on the opposite sides of the first bracket 21 and the second bracket 22 to avoid the spring 1 and the slider 4 on the corresponding side.

[0066] Please refer to Figures 7 to 9In the embodiment of the present application, the spring 1 in the damping assembly 370 is wound into a spiral shape by the spring wire 10, and the number of windings N is an integer greater than or equal to 4, for example, N is equal to 4, 5, 6, 7, 8 or an integer greater than 8. The cross section of the spring wire 10 is rectangular, combined with Fig.10 It is understood that the rectangle includes adjacent first sides 1-2 and second sides 1-1, the length c of the first side 1-2 ranges from 0.3mm to 0.55mm, and the length b of the second side 1-1 ranges from 0.3mm to 0.55mm, wherein the first side 1-2 can be the length of the rectangular cross section, and the second side 1-1 can be the width of the rectangular cross section. The lengths of the first side 1-2 and the second side 1-1 can be any value within the above-mentioned numerical range, and of course the length values ​​of the first side 1-2 and the second side 1-1 can also be the same, and the values ​​of the first side and the second side can be different. The embodiment of the present application shows a specific structure in which the length b of the first side 1-2 is 0.35mm and the length c of the second side 1-1 is 0.5mm. Of course, in another example, the length b of the first side 1-2 can be 0.4mm, and the length c of the second side 1-1 is 0.45mm.

[0067] The cross section of the spring wire 10 is a cylindrical spring with a circular shape and a stiffness of

[0068] The cross section of the spring wire 10 is a cylindrical spring with a rectangular shape and a stiffness of

[0069] In the two formulas, G indicates the shear modulus of the spring material, where G for steel = 8x10 10 Pa, bronze G = 4x10 10 Pa; a represents the diameter of the circular cross section; n represents the effective number of coils of the spring, without unit; D represents the mean diameter of the spring; b represents the width of the rectangular cross section; c represents the length of the rectangular cross section.

[0070] Take the rectangular cross-section spring and the circular cross-section spring with the same effective number of coils, the same center diameter D and the same material as an example. For example, taking a=0.45 mm as an example, a circular cross-sectional size can be formed into a rectangular cross-section with b=0.35 mm and c=0.5 mm by calendering process.

[0071] It can be seen from the above formula that for rectangular cross-section springs and circular cross-section springs with the same effective number of turns, the same center diameter D, and the same material, the stiffness of the rectangular cross-section spring is approximately 10% higher than that of the circular cross-section spring.

[0072] Compared with the spring wire 10 having a circular cross-section, under the same spatial conditions, the rectangular cross-section spiral spring 1 has a greater stiffness and absorbs more energy, thereby increasing the damping force generated by the damping component 370, which is beneficial to improving the user's feel when folding or unfolding the electronic device; while satisfying the same damping force, the rectangular cross-section spiral spring 1 occupies less space, which is beneficial to the arrangement of other components of the electronic device.

[0073] In the embodiment of the present application, the length c of the first side 1-2 is greater than the length b of the second side, the first side 1-2 extends along the axial direction of the columnar structure, the length c of the first side 1-2 ranges from 0.45 mm to 0.55 mm, and the length b of the second side ranges from 0.3 mm to 0.35 mm. The spring 1 formed by the spring wire 10 within the above range occupies a relatively small space in the circumferential direction, which can meet the use requirements of most electronic devices.

[0074] Please refer to Fig.11 In the embodiment of the present application, the first side 1-2 and the second side 1-1 are connected by an arc 1-3, that is, the corners of the rectangle of the cross section of the spring wire 10 in the embodiment of the present application are not right angles, but arc-shaped, the radius r of the arc 1-3 is greater than or equal to 0.15 mm, and the length c of the first side 1-2 is greater than or equal to 0.36 mm. The corners of the rectangular cross section in the embodiment of the present application are arc-shaped, where the stress is small, which is conducive to improving the working performance and service life of the spring 1.

[0075] In summary, the rectangle described in the embodiments of the present application may be a rectangle with adjacent sides being perpendicular, or may be a rectangle with adjacent sides connected by arcs or straight lines and other non-right angles.

[0076] Please refer to Fig.12 In the embodiment of the present application, the inner ring of the columnar structure is cylindrical, and the diameter D1 of the inner ring ranges from 0.85 mm to 0.95 mm. In a specific product, D1 can be 0.88 mm to 0.95 mm.

[0077] The outer ring of the columnar structure is also cylindrical, and the diameter D2 of the outer ring ranges from 1.65 mm to 1.72 mm. The spring 1 within this size range has a small volume and high working performance, and can meet the small volume design requirements of electronic equipment.

[0078] That is to say, the spring 1 in the embodiment of the present application is also a cylindrical spring 1.

[0079] Please refer again Figure 8In the embodiment of the present application, when the spring 1 is in a non-compressed state, the length L0 of the columnar structure along the axial direction ranges from 7.6 mm to 7.8 mm. The spring 1 within this length range can basically meet the damping force requirements of most electronic devices and occupies a small space. Among them, the intercept p of the spring 1 can range from 0.7 mm to 0.9 mm. In an example, the length L0 of the columnar structure along the axial direction is 7.7 mm, and the intercept p is 0.8 mm.

[0080] In the embodiment of the present application, the effective number of turns in the columnar structure ranges from 6 to 8 turns, for example, the effective number can be 6, 7 or 8 turns, and the total number of turns of the columnar structure ranges from 8 to 10 turns, for example, 8, 9 or 10 turns. The first spring wire coil 12 and the second spring wire coil 13 at the outermost end of the spring 1 are basically incomplete turns, and the effective spring coil 11 is located between the first spring wire coil 12 and the second spring wire coil 13. The number of effective spring coils 11 is the effective number of turns, and the total number of turns is roughly equal to the effective number of turns plus 2. Of course, the special case where the total number of turns differs from the effective number of turns by 1 or 0 is not excluded. The number of turns of the spring 1 within this range can meet the damping performance requirements and occupy a small space.

[0081] The above parameters can be reasonably configured according to the specific product. The following table gives the specific configuration parameters of several springs.

[0082] Spring serial number C / mm b / mm p / mm L0 / mm D1 / mm D2 / mm Effective number of laps Total laps 1 0.5 0.4 0.7 7.6 0.9 1.6 8 10 2 0.5 0.35 0.75 7.6 0.88 1.68 7 9 3 0.5 0.35 0.75 7.7 0.9 1.65 8 10 4 0.45 0.35 0.8 7.7 0.91 1.64 7 9 5 0.5 0.45 0.8 7.75 0.9 1.62 6 8 6 0.4 0.4 0.9 7.8 0.89 1.6 6 8

[0083] The springs in the above table were subjected to force testing, wherein the test conditions were: pre-stressing 10 times with a stroke of 5.85mm to 5.05mm, and then one time with a single-side stroke of 5.75mm. When the spring was compressed to the minimum length, the pressure was greater than 22N.

[0084] Life test conditions: Compression 400,000 times according to the stroke of 5.85mm to 5.05mm, and the force value decay does not exceed 15%.

[0085] Please refer to Fig.13 In the embodiment of the present application, the columnar structure includes a first spring wire coil 12 and a second spring wire coil 13 at both ends. The end faces of the first spring wire coil 12 and the second spring wire coil 13 that are relatively far away are planes 121, and the planes 121 are perpendicular to the axial direction of the columnar structure. In order to better distinguish the plane area, the plane area is shaded in the figure. The figure only shows the plane of the outer end of the first spring wire coil 12. The plane of the outer end of the second spring wire coil 13 can be understood with reference to the plane of the outer end of the first spring wire coil 12. The sizes of the planes at both ends can be the same, or of course different.

[0086] In this example, both end surfaces of the columnar structure are planes, which is beneficial to increasing the contact area between the spring and the components on both sides thereof, improving the reliability of force transmission, and improving the stability of the system.

[0087] Please refer again Fig.12 In order to prevent the two ends of the spring from being crushed, in the embodiment of the present application, the minimum thickness L1 of the first spring wire coil and the second spring wire coil is greater than or equal to 0.4 times the axial length of the rectangular cross section. For example, when c is 0.5 mm, the thickness L1 of the outermost spring wire coil is not less than 0.2 mm. This can improve the stability of the system formed by the spring 1.

[0088] In order to further improve the stability of the spring, the angle β of the circumference occupied by the plane 121 is greater than 180 degrees. Fig.13 As shown, Fig.13 Two boundary lines of the outer end plane of the first spring wire coil 12 located below are shown: a first boundary line 1211 and a second boundary line 1212. The angle β between the first boundary line 1211 and the second boundary line 1212 is greater than 180 degrees, so as to maximize the contact area between the spring and its contact component.

[0089] The material of the spring wire can be SAE6150 chrome vanadium steel, INCONEL-750, INCONEL-718, NIMONIC 90, etc.

[0090] The embodiment of the present application is described by taking the application of a spring to a damping component as an example. Of course, the spring in the embodiment of the present application can also be applied to other positions to provide elastic force requirements.

[0091] For other structures of electronic devices, please refer to the current technology.

[0092] The damping assembly, the rotating shaft mechanism and the electronic device in the embodiments of the present application all include the above-mentioned spring, so the damping assembly, the rotating shaft mechanism and the electronic device also have the above-mentioned technical effects of the spring.

[0093] In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0094] The directional terms mentioned in the embodiments of the present application, such as "inside", "outside", etc., are only references to the directions of the drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present application, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0095] In the description of the embodiments of the present application, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0096] In the embodiments of the present application, "and / or" is only a description of the association relationship of the 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.

[0097] The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A spring, characterized in that: It includes a spring wire, which is spiraled N times to form a columnar structure. The cross-section of the spring wire is a rectangle, and the rectangle includes a first side and a second side adjacent to each other. The length of the first side ranges from 0.3 mm to 0.55 mm, and the length of the second side ranges from 0.3 mm to 0.55 mm. N is a natural number greater than or equal to 4.

2. The spring according to claim 1, characterized in that: The length of the first side is greater than that of the second side. The first side extends along the axial direction of the columnar structure. The length of the first side ranges from 0.45 mm to 0.55 mm, and the length of the second side ranges from 0.3 mm to 0.35 mm.

3. The spring according to claim 2, characterized in that: The first side and the second side are connected by an arc, the radius of the arc is greater than or equal to 0.15 mm, and the length of the first side is greater than or equal to 0.36 mm.

4. The spring according to claim 1, characterized in that: The inner ring of the columnar structure is cylindrical, and the diameter of the inner ring ranges from 0.88 mm to 0.95 mm.

5. The spring according to claim 4, characterized in that: The outer ring of the columnar structure is cylindrical, and the diameter of the outer ring ranges from 1.65 mm to 1.72 mm.

6. The spring according to claim 1, characterized in that: In a non-compressed state, the length of the columnar structure along the axial direction ranges from 7.6 mm to 7.8 mm.

7. The spring according to claim 1, characterized in that: The effective number of turns in the columnar structure ranges from 6 to 8 turns, and the total number of turns of the columnar structure ranges from 8 to 10 turns.

8. The spring according to claim 1, characterized in that: The intercept of the spring ranges from 0.7 mm to 0.9 mm.

9. The spring according to any one of claims 1 to 8, characterized in that: The columnar structure comprises a first spring wire coil and a second spring wire coil located at two ends, and end surfaces of the first spring wire coil and the second spring wire coil that are relatively far away from each other are planes, and the planes are perpendicular to the axial direction of the columnar structure.

10. The spring according to claim 9, characterized in that: The minimum thickness of the first spring wire coil and the second spring wire coil is greater than or equal to 0.4 times the length of the side of the rectangular cross-section extending in the axial direction.

11. The spring according to claim 9, characterized in that: The angle of the circumference occupied by the plane is greater than 180 degrees.

12. A damping assembly, characterized in that: It comprises a bracket, a shaft, a slider and the spring according to any one of claims 1 to 11, wherein the spring is nested in the shaft, the slider slides along the shaft, and under the action of the spring, the concave and convex matching surfaces of the bracket and the slider abut against each other.

13. The damping assembly according to claim 12, characterized in that The shaft body includes a first shaft body and a second shaft body, the slider is slidably connected to the first shaft body and the second shaft body at the same time, the bracket includes a first bracket and a second bracket, the first bracket and the second bracket include relatively close first ends, the first end of the first bracket is rotatably connected to the first shaft body, and the first end of the second bracket is rotatably connected to the second shaft body, and the slider is concave-convexly matched with the first bracket and the second bracket.

14. The damping assembly according to claim 13, characterized in that The ends of the first bracket and the second bracket that are relatively far away are second ends. The second ends of the first bracket and the second bracket are respectively used for sliding connection with corresponding side door panels of the electronic equipment.

15. The damping assembly according to claim 14, characterized in that The first bracket and the second bracket both have a first sleeve and a second sleeve, which are arranged axially at intervals. The slider includes a first slider and a second slider, and the first slider and the second slider are both slidably sleeved on the first shaft body and the second shaft body. The first shaft body and the second shaft body are both sleeved with the spring, and the spring is pressed between the first slider and the second slider. The first slider is in concave-convex fit with the first sleeve of the first bracket and the first sleeve of the second bracket, and the second slider is in concave-convex fit with the second sleeve of the first bracket and the second sleeve of the second bracket.

16. The damping assembly according to claim 15, characterized in that The opposite sides of the first bracket and the second bracket are also provided with arc-shaped concave surfaces to avoid the spring and the slider on the corresponding side.

17. An electronic device, characterized in that It comprises the spring according to any one of claims 1 to 11, or the damping assembly according to any one of claims 12 to 16.

18. The electronic device according to claim 17, characterized in that: The electronic device comprises a first body, a second body and a hinge mechanism. Under the action of the hinge mechanism, the first body and the second body can be relatively folded and unfolded. The hinge mechanism comprises at least one damping component.

19. The electronic device according to claim 18, characterized in that: The electronic device is a folding screen mobile phone, and the first body and the second body are two middle frames of the folding screen mobile phone respectively; Alternatively, the electronic device is a notebook computer, and the first body and the second body are respectively a display side and a keyboard side of the notebook computer.

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