WO2022183848A1 - Arbre rotatif et dispositif doté de celui-ci - Google Patents

Arbre rotatif et dispositif doté de celui-ci Download PDF

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Publication number
WO2022183848A1
WO2022183848A1 PCT/CN2022/071464 CN2022071464W WO2022183848A1 WO 2022183848 A1 WO2022183848 A1 WO 2022183848A1 CN 2022071464 W CN2022071464 W CN 2022071464W WO 2022183848 A1 WO2022183848 A1 WO 2022183848A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotating shaft
gear
transmission structure
fixed
bracket
Prior art date
Application number
PCT/CN2022/071464
Other languages
English (en)
Chinese (zh)
Inventor
彭永锋
Original Assignee
荣耀终端有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 荣耀终端有限公司 filed Critical 荣耀终端有限公司
Publication of WO2022183848A1 publication Critical patent/WO2022183848A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • F16C11/10—Arrangements for locking
    • F16C11/103—Arrangements for locking frictionally clamped
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
    • F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
    • F16H1/06—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with parallel axes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1675—Miscellaneous details related to the relative movement between the different enclosures or enclosure parts
    • G06F1/1681—Details related solely to hinges
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/0206—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings
    • H04M1/0208—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings characterized by the relative motions of the body parts
    • H04M1/0214—Foldable telephones, i.e. with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
    • H04M1/0216—Foldable in one direction, i.e. using a one degree of freedom hinge
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/0206—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings
    • H04M1/0208—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings characterized by the relative motions of the body parts
    • H04M1/0214—Foldable telephones, i.e. with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
    • H04M1/0216—Foldable in one direction, i.e. using a one degree of freedom hinge
    • H04M1/022—The hinge comprising two parallel pivoting axes
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0217—Mechanical details of casings
    • H05K5/0226—Hinges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • F16H2001/327—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear with orbital gear sets comprising an internally toothed ring gear

Definitions

  • the present application relates to the technical field of equipment installed with a rotating shaft, and in particular, to a rotating shaft and a device such as a notebook computer, a flip phone, a mobile phone bracket, and the like equipped with a rotating shaft.
  • mobile phone brackets, laptops, flip phones and other devices are equipped with rotating shafts.
  • the rotating shaft acts as a rotary connection bridge between two components in these devices. Its cost, service life and user experience affect the cost, service life and user experience of the entire device. user experience.
  • a damping structure is arranged in the rotating shaft, and the damping structure is used to provide damping torque, so that the two components connected with the rotating shaft can be maintained at the target opening and closing angle position.
  • the damping structure needs to provide a relatively large damping torque so that the two components connected with the rotating shaft can be kept at the target opening and closing angle position.
  • the damping structure and the rotating shaft are prone to wear failure, the damping torque decays quickly, and the life of the rotating shaft is short.
  • the designed initial damping torque is large, resulting in a large initial opening and closing force between the two components, thereby affecting the user experience.
  • Embodiments of the present application provide a rotating shaft and a device mounted with the rotating shaft, which can reduce the requirements on material wear resistance and elastic force of the damping structure, prolong the service life of the rotating shaft, and enhance user experience.
  • some embodiments of the present application provide a rotating shaft, the rotating shaft includes a fixed bracket, a shaft core, a damping structure, a transmission structure and a movable bracket; the shaft core is rotatably connected to the fixed bracket with itself as an axis, and the damping structure is used for Provide damping torque, so that the two parts connected by the rotating shaft can be kept at the target opening and closing angle position;
  • the input end is fixed with the movable bracket, and the transmission ratio i 12 of the transmission structure is less than 1.
  • a transmission structure is added to the rotating shaft, and the transmission ratio i 12 of the transmission structure is less than 1.
  • the damping torque T' and the output torque T2 are opposite in direction and equal in magnitude. Since the damping torque T' is proportional to the pressure F exerted by the damping structure on the friction surface, the pressure F exerted by the damping structure on the friction surface is relatively small. Under the condition of ensuring a certain service life of the rotating shaft, the requirements for the elastic force and wear resistance of the damping structure are relatively low. Under the condition that the elastic force and wear resistance of the damping structure are certain, the service life of the rotating shaft can be prolonged. Moreover, in order to reserve enough torque loss margin, the designed initial damping torque is small, the initial opening and closing force between the two components is small, and the user experience is better.
  • the transmission ratio i 12 of the transmission structure is 1/4.
  • the transmission structure includes a ring gear, a sun gear, a planetary gear, and a planet carrier; wherein, the ring gear forms a rotation input end of the transmission structure, and the ring gear can rotate around its central axis. It is rotatably connected to the fixed bracket; the central gear is located in the inner gear and coaxially arranged with the inner gear; the planetary gear is located between the central gear and the inner gear, and the planetary gear meshes with the inner gear and the central gear; the central gear is fixed On the planetary carrier, the planetary gear is rotatably connected to the planetary carrier around its central axis, and the planetary carrier forms the rotation output end of the transmission structure.
  • the transmission structure is a planetary gear transmission structure
  • the structure stability of the planetary gear transmission structure is better
  • the rotation axis of the rotation input end and the rotation axis of the rotation output end are collinear, and the volume is small, which is conducive to the miniaturized design of the rotating shaft.
  • the number of planetary gears is multiple, the multiple planetary gears are evenly arranged around the circumference of the sun gear, and each planetary gear in the multiple planetary gears is connected to the ring gear , the central gear meshes. In this way, the stability of the planetary gear transmission structure is better.
  • the number of planetary gears is three. In this way, the number of planetary gears is moderate, and stability and structural complexity can be considered.
  • the transmission structure includes a driving gear and a driven gear; the driving gear forms a rotation input end of the transmission structure, and the driving gear is rotatably connected to the fixed bracket around its central axis; the driven gear Meshing with the driving gear, the diameter of the driven gear is smaller than that of the driving gear, that is, the number of teeth of the driven gear is less than that of the driving gear, and the transmission ratio i 12 of the transmission structure is less than 1.
  • the driven gear forms the rotational output end of the transmission structure.
  • the transmission structure has a simple structure, fewer components, and is easy to assemble and operate.
  • both the driving gear and the driven gear are spur gears, and the axis of the driving gear is parallel to the axis of the driven gear. It is suitable for the scenario where the rotation axis of the rotation input end of the transmission structure is parallel to the rotation axis of the rotation output end of the transmission structure.
  • both the driving gear and the driven gear are bevel gears, and the axis of the driving gear intersects the axis of the driven gear. It is suitable for the scenario where the rotation axis of the rotation input end of the transmission structure intersects with the rotation axis of the rotation output end of the transmission structure.
  • Intersection as used herein includes, but is not limited to, "perpendicular.”
  • the fixing bracket includes a bracket body, a first connection ear and a second connection ear; the first connection ear and the second connection ear are fixed on the bracket body, and the first connection ear is provided with There is a first through hole, and the shaft core is fitted through the first through hole and can rotate in the first through hole; the rotation input end of the transmission structure can be rotatably connected to the second connecting ear.
  • the structure is simple, and the stability of the transmission structure is better.
  • the first connecting ear includes a connecting ear body and a fixing member; the connecting ear body is fixed on the bracket body, and the first through hole is provided on the connecting ear body; A gap is provided on one side, the gap extends along the radial direction of the first through hole, and the gap penetrates part of the connecting ear body located on one side of the first through hole; the fixing piece is fixed on the connecting ear body, and the fixing piece is provided with a limiter A position block, the limit block is matched and installed in the notch.
  • the notch allows the shaft core to be installed into the first through hole along the radial direction of the first through hole, thereby reducing the difficulty of installing the shaft core in the first through hole.
  • the connecting ear body is further provided with a limiting hole, and the axial direction of the limiting hole is parallel to the axial direction of the first through hole.
  • the fixing piece is also provided with a limit post, which is matched and penetrated in the limit hole. Therefore, in addition to the notch and the limiting block, the fixing member and the connecting ear body are limited by the limiting hole and the limiting column, thereby preventing the fixing member from being in contact with the first through hole.
  • Axial vertical in-plane motion (including translational and rotational motion).
  • the connecting ear body, the fixing piece and the damping structure are arranged along the axial direction of the first through hole, and the fixing piece is located between the connecting ear body and the damping structure.
  • the damping structure has a pressing force directed towards the connecting ear body, so as to press the fixing piece on the connecting ear body.
  • the freedom of movement of the fixing member relative to the connecting ear body along the axial direction of the first through hole is limited by the damping structure.
  • the fixing of the fixing member on the connecting ear body is realized. In this way, complicated fixing operations such as screw connection and welding are not performed between the fixing piece and the connecting ear body, and the installation and disassembly operations are simple and easy to implement.
  • the transmission structure and the damping structure are located on opposite sides of the first connecting ear, respectively, and the damping structure includes friction plates, torsion springs, and nuts arranged in sequence along a direction away from the transmission structure; friction The sheet and the torsion spring are sleeved on the shaft core, the shaft core is fixed with a screw rod, the screw rod and the shaft core are coaxially arranged, and the nut is screwed on the screw rod.
  • the torsion spring By rotating the nut, the torsion spring can be compressed, and further damping torque is provided to the first connecting lug through the friction plate, thereby preventing the shaft core from rotating relative to the first connecting lug, so that the two parts connected by the rotating shaft can be kept at the target Opening and closing angle position.
  • the target opening and closing angle position may be any angle position between 0° and 360°.
  • the structure of the rotating shaft is simple, and by rotating the nut, the magnitude of the initial damping torque provided by the damping structure can be adjusted. Therefore, it can meet the needs of different damping scenarios, so it has a wide range of applications, and can keep the two components connected by the rotating shaft at any opening and closing angle position.
  • some embodiments of the present application provide a device equipped with a rotating shaft, the device including two components and the rotating shaft as described in any of the above technical solutions; a fixing bracket of the rotating shaft is fixed to one of the two components , the movable bracket of the rotating shaft is fixed with the other part of the two parts.
  • the device provided in the embodiment of the present application includes the rotating shaft described in any of the above technical solutions, the two can solve the same technical problem and achieve the same technical effect.
  • some embodiments of the present application provide a device equipped with a rotating shaft, the device includes a keyboard host, a display screen and the rotating shaft as described in any of the above technical solutions; the fixing bracket of the rotating shaft is fixed with the keyboard host, and the rotating shaft is The movable bracket is fixed with the display screen.
  • the device provided in the embodiment of the present application includes the rotating shaft described in any of the above technical solutions, the two can solve the same technical problem and achieve the same technical effect.
  • FIG. 1 is a schematic structural diagram of a device provided with a rotating shaft provided by some embodiments of the present application;
  • Fig. 2 is the structural representation of the part shown in area I in the equipment shown in Fig. 1;
  • FIG. 3 is a schematic structural diagram of a device provided with a rotating shaft provided by further embodiments of the present application;
  • Fig. 4 is an enlarged view of area II in the apparatus shown in Fig. 3;
  • FIG. 5 is a perspective view of a rotating shaft provided by some embodiments of the present application.
  • Fig. 6 is the exploded view of the rotating shaft shown in Fig. 5;
  • FIG. 7 is a schematic structural diagram of a rotating shaft provided by further embodiments of the present application.
  • FIG. 8 is a schematic structural diagram of a rotating shaft provided by further embodiments of the present application.
  • FIG. 9 is a graph showing the relationship between the known wear amount and displacement and load at present.
  • FIG. 10 is a perspective view of a rotating shaft provided by further embodiments of the present application.
  • Fig. 11 is an exploded view of the rotating shaft shown in Fig. 10;
  • FIG. 12 is a schematic structural diagram of a rotating shaft provided by further embodiments of the present application.
  • FIG. 13 is an exploded view of the rotating shaft shown in FIG. 12 .
  • first”, “second” and “third” are only used for description purposes, and cannot be understood as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as “first”, “second”, “third” may expressly or implicitly include one or more of that feature.
  • the terms “comprising”, “comprising” or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements, but also Include other elements not expressly listed, or which are inherent to such a process, method, article or apparatus.
  • an element qualified by the phrase “comprising a" does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.
  • the present application provides a device equipped with a rotating shaft, which includes but is not limited to electronic devices such as mobile phones, notebook computers, laptop computers (laptop computers), personal digital assistants (PDAs), personal computers, and in-vehicle devices. As well as accessories for these electronic devices (such as phone stands, tablet stands, selfie sticks, protective cases, etc.).
  • electronic devices such as mobile phones, notebook computers, laptop computers (laptop computers), personal digital assistants (PDAs), personal computers, and in-vehicle devices.
  • PDAs personal digital assistants
  • personal computers and in-vehicle devices.
  • accessories for these electronic devices such as phone stands, tablet stands, selfie sticks, protective cases, etc.
  • FIG. 1 is a schematic structural diagram of a device 100 provided with a rotating shaft provided by some embodiments of the present application
  • FIG. 2 is a structural schematic diagram of the part shown in area I of the device 100 shown in FIG. 1
  • the device 100 with the rotating shaft installed is a notebook computer.
  • the device 100 includes a keyboard host 10 , a display screen 20 and a rotating shaft 30 .
  • FIGS. 1 and 2 only schematically show some components included in the device 100 , and the actual shapes, actual sizes, actual positions and actual structures of these components are not limited by FIGS. 1 and 2 .
  • the device 100 may also include other components, such as a camera module, etc., which are not specifically limited herein.
  • the keyboard host 10 is used for inputting instructions and data, and controls the display screen 20 to display images and videos according to the inputted instructions and data.
  • the display screen 20 is used to display images, videos, and the like.
  • the display screen 20 can be a flexible display screen or a rigid display screen.
  • the display screen 20 can be an organic light-emitting diode (organic light-emitting diode, OLED) display screen, an active-matrix organic light-emitting diode or an active-matrix organic light-emitting diode (active-matrix organic light-emitting diode, AMOLED) Display, mini organic light-emitting diode (mini organic light-emitting diode) display, micro light-emitting diode (micro organic light-emitting diode) display, micro organic light-emitting diode (micro organic light-emitting diode) display, quantum dot light-emitting diode (quantum dot light emitting diodes, QLED) display, liquid crystal display (liquid crystal display, LCD).
  • OLED organic light-emitting diode
  • AMOLED active-
  • the rotating shaft 30 is used to rotatably connect the keyboard host 10 and the display screen 20, so that the device 100 can be switched between an open state and a closed state.
  • the display screen 20 and the keyboard host 10 form an included angle greater than 0° and less than 360°.
  • the rotating shaft 30 has a damping effect, so that the device 100 can maintain the target opening angle position between 0° and 360°.
  • the target opening angle may be a fixed value between 0° and 360°, or may be any value between 0° and 360°.
  • the display screen 20 When the device 100 is in the closed state, the display screen 20 is covered on the keyboard host 10 , and the display surface of the display screen 20 is opposite to the keyboard surface of the keyboard host 10 .
  • the display interface of the display screen 20 and the keyboard surface of the keyboard host 10 can be protected from scratches and dust.
  • FIG. 3 is a schematic structural diagram of a device 100 provided with a rotating shaft according to further embodiments of the present application
  • FIG. 4 is an enlarged view of area II in the device 100 shown in FIG. 3
  • the device 100 on which the rotating shaft is installed is a mobile phone or tablet computer stand.
  • the device 100 includes a base body 40 , a carrier 50 and a rotating shaft 30 .
  • FIGS. 3 and 4 only schematically show some components included in the device 100 , and the actual shapes, actual sizes, actual positions and actual structures of these components are not limited by FIGS. 3 and 4 .
  • the device 100 may include other structures besides the base 40, the carrier 50 and the rotating shaft 30, such as being electrically connected by a universal serial bus (USB), a charging coil and a charging chip
  • USB universal serial bus
  • the formed wireless charging circuit and the like are not specifically limited here.
  • the base body 40 is used to be fixed on a computer desk, a wall, a center console of a car, etc. by means of gluing, clamping, screw connection, and fixing with a magic sticker.
  • the carrier 50 is used to carry a mobile phone or a tablet computer.
  • the carrier 50 is provided with a fixing portion 51 .
  • the fixing part 51 is used for fixing the mobile phone or the tablet computer on the carrier 50 .
  • the fixing portion 51 includes, but is not limited to, a buckle, a suction cup, and the like.
  • the rotating shaft 30 connects the carrier 50 to the base 40 rotatably, and the rotating shaft 30 has a damping effect, so that the carrier 50 can stagnate at the target opening and closing angle position after driving the mobile phone or tablet computer to rotate.
  • FIGS. 1-4 only schematically show two structural forms of the device 100, and the structural form of the device 100 is not limited to this, as long as it includes two components and is connected between the two components A type of equipment such as the rotating shaft 30 is within the scope of protection of the present application.
  • the rotating shaft 30 has various structural forms. Please refer to FIGS. 5 and 6 , FIG. 5 is a perspective view of a rotating shaft 30 provided by some embodiments of the present application, and FIG. 6 is an exploded view of the rotating shaft 30 shown in FIG. 5 .
  • the rotating shaft 30 includes a fixed bracket 31 , a shaft core 32 , a damping structure 33 and a movable bracket 34 .
  • FIGS. 5 and 6 only schematically show some components included in the rotating shaft 30 , and the actual shapes, actual sizes, actual positions and actual structures of these components are not limited by FIGS. 5 and 6 .
  • the rotating shaft 30 may include other structures besides the fixed bracket 31 , the shaft core 32 , the damping structure 33 and the movable bracket 34 , which are not specifically limited herein.
  • the materials of the fixed bracket 31 and the movable bracket 34 include but are not limited to cold rolled steel and stainless steel.
  • the fixed bracket 31 and the movable bracket 34 are respectively used for fixing with the two components of the device 100 .
  • the fixed bracket 31 is fixed to the keyboard host 10
  • the movable bracket 34 is fixed to the display screen 20 .
  • the fixed bracket 31 can also be fixed to the display screen 20 , and at this time, the movable bracket 34 is fixed to the keyboard host 10 .
  • the fixed bracket 31 is fixed to the base 40
  • the movable bracket 34 is fixed to the carrier 50 .
  • the fixed bracket 31 can also be fixed to the carrier 50 , and at this time, the movable bracket 34 is fixed to the base body 40 .
  • the fixing bracket 31 is provided with a first fixing hole 31 a.
  • the first fixing hole 31a is used for fixing with a component of the device 100 by means of screws, bolts, rivets and the like.
  • the number of the first fixing holes 31a is multiple.
  • the number of the first fixing holes 31a is three.
  • the fixing bracket 31 is further provided with a first positioning hole 31b.
  • the first positioning hole 31b is used to cooperate with a positioning column (not shown in the figure) on a component of the device 100, so as to realize the pre-positioning of the fixing bracket 31 on the component.
  • the installation efficiency of the fixing bracket 31 on a component of the device 100 can be improved.
  • the number of the first positioning holes 31b is multiple.
  • the number of the first positioning holes 31b is two.
  • the movable bracket 34 is provided with a second fixing hole 34a.
  • the second fixing holes 34a are used for fixing with another component of the device 100 by means of screws, bolts, rivets and the like.
  • the number of the second fixing holes 34a is multiple.
  • the number of the second fixing holes 34a is two.
  • the movable bracket 34 is further provided with a second positioning hole 34b.
  • the second positioning hole 34b is used to cooperate with a positioning column (not shown in the figure) on another part of the device 100, so as to realize the pre-positioning of the movable bracket 34 on the other part.
  • the installation efficiency of the movable bracket 34 on another part of the apparatus 100 can be improved.
  • the number of the second positioning holes 34b is multiple.
  • the number of the second positioning holes 34b is two.
  • the shaft core 32 is the core component of the rotating shaft 30 and has a columnar structure.
  • the material of the shaft core 32 includes but is not limited to 45 gauge steel, 40 chrome and 42 chrome molybdenum and the like.
  • the shaft core 32 is rotatably connected to the fixed bracket 31 with itself as an axis.
  • the fixing bracket 31 includes a bracket body 311 and a first connecting ear 312 .
  • the first connecting ear 312 is fixed on the bracket body 311 .
  • the first connecting ear 312 is provided with a first through hole.
  • the shaft core 32 is fitted through the first through hole and can rotate in the first through hole.
  • the first connecting ear 312 may be an integral structure, or may be formed by assembling a plurality of structures, which is not specifically limited herein.
  • the first connecting ear 312 includes a connecting ear body 3121 and a fixing member 3122 .
  • the connecting ear body 3121 is fixed on the bracket body 311 .
  • the connection ear body 3121 may be fixed on the bracket body 311 by means of screw connection, snap connection, integral molding, etc., which is not specifically limited herein.
  • the connecting ear body 3121 and the bracket body 311 are integrally formed.
  • the first through hole is disposed on the connecting ear body 3121, and a notch 3121a is formed on one side of the first through hole.
  • the notch 3121a extends along the radial direction of the first through hole, and the notch 3121a penetrates a part of the connecting ear body 3121 located on one side of the first through hole.
  • the notches 3121a allow the shaft core 32 to be installed into the first through hole along the radial direction of the first through hole, so as to reduce the difficulty of installing the shaft core 32 in the first through hole.
  • the fixing member 3122 is fixed on the connecting ear body 3121 .
  • the fixing member 3122 is provided with a limiting block 3122a, and the limiting block 3122a is fitted in the notch 3121a. In this way, the limiting block 3122a and the connecting ear body 3121 enclose a closed first through hole to prevent the shaft core 32 from coming out of the first through hole along the radial direction of the first through hole.
  • connection method between the fixing member 3122 and the connecting ear body 3121 includes, but is not limited to, screw connection, welding and snap connection, which are not specifically limited herein.
  • the connecting ear body 3121 is further provided with a limiting hole 3121b, and the axial direction of the limiting hole 3121b is parallel to the axial direction of the first through hole.
  • the fixing member 3122 is also provided with a limiting column 3122b, and the limiting column 3122b is fitted through the limiting hole 3121b. Therefore, in addition to the gap 3121a and the limiting block 3122a, the space between the fixing member 3122 and the connecting ear body 3121 is limited by the limiting hole 3121b and the limiting post 3122b, so that the fixing member 3122 can be blocked.
  • the connecting ear body 3121 , the fixing piece 3122 , and the damping structure 33 are arranged along the axial direction of the first through hole, and the fixing piece 3122 is located between the connecting ear body 3121 and the damping structure 33 .
  • the damping structure 33 has a pressing force directed toward the connecting ear body 3121 to press the fixing member 3122 on the connecting ear body 3121 . In this way, the freedom of movement of the fixing member 3122 relative to the connecting ear body 3121 in the axial direction of the first through hole is restricted by the damping structure 33 .
  • the fixing of the fixing member 3122 on the connecting ear body 3121 is realized. In this way, the fixing member 3122 and the connecting ear body 3121 are not subjected to complicated fixing operations such as screw connection, welding, etc., and the installation and removal operations are simple and easy to implement.
  • the limiting hole 3121b may also be provided on the fixing member 3122, and at this time, the limiting post 3122b is provided on the connecting ear body 3121.
  • the fixing bracket 31 further includes a third connecting lug 314 , a third through hole is formed on the third connecting lug 314 , the third through hole is coaxial with the first through hole, and the shaft The core 32 also passes through the third through hole.
  • the shaft core 32 is jointly supported by the first connection lugs 312 and the third connection lugs 314 , which can improve the supporting stability of the shaft core 32 on the fixing bracket 31 .
  • the movable bracket 34 is fixed on the shaft core 32 .
  • the movable bracket 34 is fixed on the part of the shaft core 32 located between the first connection ear 312 and the third connection ear 314 .
  • the movable bracket 34 can also be fixed on other parts of the shaft core 32, which is not limited herein.
  • the movable bracket 34 may be fixed on the shaft core 32 by means of screw connection, riveting, integral molding, etc., which is not specifically limited herein.
  • the movable bracket 34 is integrally formed with the shaft core 32 . In this way, the rotating shaft 30 includes fewer components, which is beneficial to reduce the structural complexity of the rotating shaft 30 and improve the assembly efficiency of the rotating shaft 30 .
  • the movable bracket 34 can be driven to rotate relative to the fixed bracket 31 .
  • the damping structure 33 is used to provide damping torque, so that the two components connected with the rotating shaft 30 can be maintained at the target opening and closing angle position.
  • the damping structure 33 includes the following three structural forms:
  • the first structural form please refer to FIG. 7 , which is a schematic structural diagram of the rotating shaft 30 according to further embodiments of the present application.
  • the first connecting ear 312 is an elastic bushing with an elastic gap 312a.
  • the inner hole of the first connecting lug 312 (that is, the first through hole mentioned above) is a variable diameter inner hole with inconsistent radii along the circumferential direction.
  • the shaft core 32 is a cam structure with inconsistent radii along the axial direction.
  • the first connecting lugs 312 apply an elastic clamping force to the shaft core 32 and generate damping torque to prevent the shaft core 32 from rotating, so that the rotating shaft 30 is connected to
  • the two parts of the can be maintained at the target opening and closing angle position.
  • the target opening and closing angular position may be one or more angular positions between 0° and 360°.
  • the shaft core 32 and the first connecting lugs 312 form the damping structure 33.
  • the rotating shaft 30 has a simple structure and low cost, and can keep the two parts connected to the rotating shaft 30 between 0° and 360°. One or more opening and closing angular positions between.
  • the second structural form please refer to FIG. 8 , which is a schematic structural diagram of the rotating shaft 30 provided by still other embodiments of the present application.
  • the damping structure 33 is an elastic material disposed between the shaft core 32 and the inner wall of the first through hole.
  • the elastic material includes, but is not limited to, rubber, sponge, and the like.
  • the elastic material is compressed to apply elastic gripping force to the shaft core 32 and generate damping torque to prevent the shaft core 32 from rotating, so that the two components connected by the rotating shaft 30 can be maintained at the target opening and closing angle position.
  • the target opening and closing angle position may be any angle position between 0° and 360°.
  • the rotating shaft has a simple structure and low cost, and can keep the two components connected with the rotating shaft 30 at any opening and closing angle position.
  • the third structural form please refer to FIG. 5 and FIG. 6 , the damping structure 33 and the movable bracket 34 are respectively located on opposite sides of the first connecting ear 312 .
  • the damping structure 33 includes a friction plate 331, a torsion spring 332, and a nut 333 which are arranged in sequence along the direction away from the first connecting ear 312.
  • the friction plate 331 and the torsion spring 332 are sleeved on the shaft core 32 .
  • a screw 32 a is fixed on the shaft core 32 , and the screw 32 a is coaxial with the shaft core 32 .
  • the nut 333 is threadedly connected to the screw rod 32a.
  • the torsion spring 332 By rotating the nut 333 , the torsion spring 332 can be compressed, and further damping torque is provided to the first connecting lug 312 through the friction plate 331 , thereby preventing the shaft core 32 from rotating relative to the first connecting lug 312 , so that the shaft 30 is connected to the first connecting lug 312 .
  • Both parts can be held at the target opening and closing angular position.
  • the target opening and closing angle position may be any angle position between 0° and 360°.
  • the structure of the rotating shaft is simple, and by rotating the nut 333, the magnitude of the initial damping torque provided by the damping structure 33 can be adjusted. Therefore, the requirements of different damping scenarios can be met, so the scope of application is wide, and the two components connected with the rotating shaft 30 can be maintained at any opening and closing angle positions.
  • the movable bracket 34 is used as a torque input component, and it is assumed that its input torque under its own weight and load (that is, the gravity of the components connected to the movable bracket 34 ) is T1 . Since the movable bracket 34 is fixed on the shaft core 32, the damping torque T' provided by the damping structure 33 needs to overcome the input torque T1. Specifically, the damping torque T' is opposite to the input torque T1 and has the same magnitude. Therefore, the damping torque T' that the damping structure 33 needs to provide is relatively large. Further, the damping torque T' is proportional to the pressure F exerted by the damping structure 33 on the friction surface. For example, in the embodiments shown in FIGS.
  • the damping torque T′ k*F*d.
  • k represents the torque coefficient
  • F represents the pressure exerted by the damping structure 33 on the fixing member 3122 through the friction plate 331
  • d represents the diameter of the friction surface (ie, the contact surface between the friction plate 331 and the fixing member 3122 ).
  • FIG. 9 shows the known wear amount (that is, the wear volume V), displacement (that is, the sliding distance L) and load (that is, the pressure F applied by the damping structure 33 to the friction surface). ) relationship graph. It can be seen from Fig. 9 that in the adhesive wear stage, with the increase of load and displacement, the wear amount increases, and compared with the displacement, the load increases, and the wear amount increases faster. And when the load ⁇ H/3, the wear amount increases sharply. As the displacement increases, the amount of wear remains the same. From this, it can be seen that the load has a greater influence on the wear amount than the displacement. Therefore, the greater the pressure F exerted by the damping structure 33 on the friction surface, the greater the wear amount of the friction part.
  • the friction parts are prone to wear failure, the damping torque decays quickly, and the shaft life is short.
  • the wear resistance of the material of the damping structure 33 In order to prolong the service life of the rotating shaft, there is a higher requirement on the wear resistance of the material of the damping structure 33, and at this time, the cost of the damping structure 33 is high.
  • the designed initial damping torque is large, resulting in a large initial opening and closing force between the two components, thereby affecting the user experience.
  • FIG. 10 is a perspective view of a rotating shaft 30 according to further embodiments of the present application
  • FIG. 11 is an exploded view of the rotating shaft 30 shown in FIG. 10
  • the rotating shaft 30 includes a transmission structure 35 in addition to a fixed bracket 31 , a shaft core 32 , a damping structure 33 and a movable bracket 34 .
  • the transmission structure 35 is serially connected between the shaft core 32 and the movable bracket 34 .
  • the transmission structure 35 has a rotational input end and a rotational output end.
  • the rotation output end of the transmission structure 35 is fixed coaxially with the shaft core 32 . That is to say, the rotation output end of the transmission structure 35 is fixed to the shaft core 32 , and the rotation axis of the rotation output end of the transmission structure 35 is collinear with the axis of the shaft core 32 .
  • the rotation input end of the transmission structure 35 is fixed with the movable bracket 34 .
  • the transmission ratio i 12 of the transmission structure 35 is less than one.
  • the transmission ratio i12 refers to the ratio of the rotational speed r1 of the rotational input end of the transmission structure 35 to the rotational speed r2 of the rotational output end of the transmission structure 35 during the operation of the transmission structure 35: r1/r2.
  • i 12 may specifically be 1/2, 1/4, 1/8, and so on. In some embodiments, i 12 is 1/4.
  • a transmission structure 35 is added to the rotating shaft 30, and the transmission ratio i12 of the transmission structure 35 is less than 1.
  • ⁇ represents the transmission efficiency of the transmission, and ⁇ is less than or equal to 1. Since i 12 is less than 1, the output torque T2 of the transmission structure 35 is smaller than the input torque T1 of the transmission structure 35 . It can be seen from this that the damping structure 33 only needs to provide the damping torque T′ to overcome the output torque T2 of the transmission structure 35 .
  • the damping torque T' and the output torque T2 are opposite in direction and equal in magnitude. Since the damping torque T' is proportional to the pressure F exerted by the damping structure 33 on the friction surface, the pressure F exerted by the damping structure 33 on the friction surface is relatively small. Under the condition of ensuring a certain service life of the rotating shaft, the requirements for the elastic force and wear resistance of the damping structure 33 are relatively low. Under the condition that the elastic force and wear resistance of the damping structure 33 are constant, the service life of the rotating shaft can be prolonged. Moreover, in order to reserve enough torque loss margin, the designed initial damping torque is small, the initial opening and closing force between the two components is small, and the user experience is better.
  • the transmission structure 35 has various structural forms. Specifically, the transmission structure 35 includes, but is not limited to, a gear transmission structure, a pulley transmission structure, a sprocket transmission structure, and the like. In some embodiments, the transmission structure 35 is a gear transmission structure.
  • the gear transmission structure has high transmission precision and compact structure, which is beneficial to the miniaturized design of the rotating shaft 30 .
  • the transmission structure 35 includes a ring gear 351 , a sun gear 352 , a planetary gear 353 and a planetary carrier 354 .
  • the ring gear 351 forms the rotation input end of the transmission structure 35 .
  • the ring gear 351 is rotatably connected to the fixed bracket 31 around its central axis.
  • the fixing bracket 31 further includes a second connection ear 313 , the second connection ear 313 is fixed on the bracket body 311 , and the inner gear 351 is rotatably connected to the second connection around its central axis. ear 313.
  • the second connecting lug 313 is provided with a second through hole, and the inner gear 351 is rotatably connected to the second through hole through the rotating shaft structure.
  • the central gear 352 is located in the ring gear 351 and coaxially arranged with the ring gear 351 .
  • the planetary gear 353 is located between the sun gear 352 and the ring gear 351 , and the planetary gear 353 meshes with the ring gear 351 and the sun gear 352 .
  • the sun gear 352 is fixed on the planetary carrier 354
  • the planetary gear 353 is rotatably connected to the planetary carrier 354 around its central axis
  • the planetary carrier 354 forms the rotation output end of the transmission structure 35 .
  • the transmission structure 35 is a planetary gear transmission structure
  • the transmission ratio i 12 of the transmission structure 35 the number of teeth Z 3 of the sun gear 352 / the number of teeth Z 1 of the ring gear 351
  • the planetary gear transmission structure has better structural stability
  • the rotation The rotation axis of the input end is collinear with the rotation axis of the rotation output end, and the volume is small, which is beneficial to the miniaturized design of the rotating shaft.
  • the number of planetary gears 353 may be one or more, which is not specifically limited herein. In some embodiments, the number of planetary gears 353 is plural. Specifically, the number of planetary gears 353 includes, but is not limited to, 2, 3, 4, and the like.
  • the plurality of planetary gears 353 are evenly arranged around the circumference of the sun gear 352 , and each of the plurality of planetary gears 353 meshes with the ring gear 351 and the sun gear 352 . In this way, the stability of the planetary gear transmission structure is better.
  • the number of planetary gears 353 is three. In this way, the number of planetary gears 353 is moderate, and stability and structural complexity can be considered.
  • FIG. 12 is a schematic structural diagram of the rotating shaft 30 provided by further embodiments of the present application
  • FIG. 13 is an exploded view of the rotating shaft 30 shown in FIG. 12
  • the transmission structure 35 includes a driving gear 355 and a driven gear 356 .
  • the driving gear 355 forms the rotation input end of the transmission structure 35 , and the driving gear 355 is rotatably connected to the fixed bracket 31 around its central axis. In some embodiments, the driving gear 355 is rotatably connected to the second connecting ear 313 around its central axis. In some embodiments, the number of the second connecting ears 313 is two, and the driving gear 355 is rotatably connected to the two second connecting ears 313 around its central axis.
  • the driven gear 356 meshes with the driving gear 355, and the diameter of the driven gear 356 is smaller than the diameter of the driving gear 355, that is to say, the number of teeth Z 2 of the driven gear 356 is less than the number of teeth Z 1 of the driving gear 355, and the transmission of the transmission structure 35
  • the ratio i 12 Z 2 /Z 1 , therefore, i 12 is less than 1.
  • the driven gear 356 forms the rotational output of the transmission structure 35 .
  • the transmission structure 35 has a simple structure, fewer components, and is easy to assemble and operate.
  • the driving gear 355 and the driven gear 356 may be spur gears or bevel gears, which are not specifically limited herein.
  • the driving gear 355 and the driven gear 356 are both spur gears.
  • the axis of the driving gear 355 is parallel to the axis of the driven gear 356 . It is applicable to the scenario where the rotation axis of the rotation input end of the transmission structure 35 is parallel to the rotation axis of the rotation output end of the transmission structure 35 .
  • the driving gear 355 and the driven gear 356 are both bevel gears, which are not shown in the figures of this embodiment, and the axis of the driving gear 355 intersects the axis of the driven gear 356 . It is applicable to the scenario where the rotation axis of the rotation input end of the transmission structure 35 intersects with the rotation axis of the rotation output end of the transmission structure 35 . It should be noted that the “intersection” here includes, but is not limited to, "perpendicular”.
  • the transmission structure 35 is not limited to the above-mentioned planetary gear structure and two-stage gear transmission structure, and can also be a three-stage or even more than three-stage gear transmission structure, which is not specifically limited here.

Abstract

Arbre rotatif (30) et dispositif (100) doté de celui-ci. L'arbre rotatif (30) comprend un support fixe (31), une broche (32), une structure d'amortissement (33), une structure de transmission (35) et un support mobile (34). La broche (32) est reliée en rotation au support fixe (31) avec elle-même comme axe ; la structure d'amortissement (33) est utilisée pour fournir un couple d'amortissement, de sorte que deux composants reliés à l'arbre rotatif (30) peut être maintenus au niveau de positions d'angle d'ouverture/de fermeture cibles ; la structure de transmission (35) présente une extrémité d'entrée de rotation et une extrémité de sortie de rotation ; l'extrémité de sortie de rotation de la structure de transmission (35) est fixée coaxialement à la broche (32) ; l'extrémité d'entrée de rotation de la structure de transmission (35) est fixée au support mobile (34) ; et le rapport de transmission de la structure de transmission (35) est inférieur à un.
PCT/CN2022/071464 2021-03-04 2022-01-11 Arbre rotatif et dispositif doté de celui-ci WO2022183848A1 (fr)

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CN202110241992.7 2021-03-04

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CN113074182B (zh) * 2021-03-04 2022-06-24 荣耀终端有限公司 一种转轴及安装有转轴的设备

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JPH02275108A (ja) * 1989-04-18 1990-11-09 Nifco Inc ヒンジ装置及びこの装置を用いた電子機器
JP2005326937A (ja) * 2004-05-12 2005-11-24 Shimonishi Giken Kogyo Kk チルトヒンジ
CN202252671U (zh) * 2011-09-16 2012-05-30 泰州市创新电子有限公司 显示屏用折叠支撑架
US20150146362A1 (en) * 2013-11-22 2015-05-28 Dell Products L.P. Information Handling System Housing Lid with Synchronized Motion Provided by Unequal Gears
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CN113074182A (zh) * 2021-03-04 2021-07-06 深圳市智信新信息技术有限公司 一种转轴及安装有转轴的设备

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CN105299029A (zh) * 2015-10-30 2016-02-03 重庆港乾机械有限公司 转接机构
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JPH02275108A (ja) * 1989-04-18 1990-11-09 Nifco Inc ヒンジ装置及びこの装置を用いた電子機器
JP2005326937A (ja) * 2004-05-12 2005-11-24 Shimonishi Giken Kogyo Kk チルトヒンジ
CN202252671U (zh) * 2011-09-16 2012-05-30 泰州市创新电子有限公司 显示屏用折叠支撑架
US20150146362A1 (en) * 2013-11-22 2015-05-28 Dell Products L.P. Information Handling System Housing Lid with Synchronized Motion Provided by Unequal Gears
CN209250703U (zh) * 2019-03-08 2019-08-13 华硕电脑股份有限公司 功能元件以及包含该功能元件的电子装置
CN113074182A (zh) * 2021-03-04 2021-07-06 深圳市智信新信息技术有限公司 一种转轴及安装有转轴的设备

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