CN223004303U

CN223004303U - Multifunctional rotating shaft structure

Info

Publication number: CN223004303U
Application number: CN202422320756.6U
Authority: CN
Inventors: 文秀江
Original assignee: Dongguan Jinfeng Electronics Co Ltd
Current assignee: Dongguan Jinfeng Electronics Co Ltd
Priority date: 2024-09-23
Filing date: 2024-09-23
Publication date: 2025-06-20
Anticipated expiration: 2034-09-23

Abstract

The present application relates to the technical field of rotating shaft mechanisms, and in particular to a multifunctional rotating shaft structure, which includes a rotating shaft, a torque mechanism and a damping mechanism. The torque mechanism includes a first elastic component, a first drive sleeve and a first cam sleeve; the damping mechanism includes a second elastic component, a second drive sleeve and a second cam sleeve. The first cam sleeve and the second cam sleeve are both rotatably connected to the rotating shaft and maintain synchronous rotation. A concave-convex matching mechanism is provided between the first drive sleeve and the first cam sleeve or between the second drive sleeve and the second cam sleeve to realize a free hovering function at any position, and has an end point self-locking and closed anti-locking function after opening, and can automatically open to the end point position when not subjected to external force.

Description

Multifunctional rotating shaft structure

Technical Field

The application relates to the field of rotating shaft mechanisms, in particular to a multifunctional rotating shaft structure.

Background

In modern electronic product design, the multifunctional rotating shaft structure is used as a key component, especially for electronic devices such as folding mobile phones, notebook computers and tablet computers, and the multifunctional rotating shaft structure is used as a key component of a device main body (such as a keyboard base for bearing core hardware and a processing unit in the notebook computers) and a turnover component (such as an upper cover or a screen panel integrated with a high-definition display screen). With the development of technology, people put higher demands on the operation convenience and stability of the keyboard.

At present, the keyboard rotating shaft assembly widely adopted in the market mainly comprises a rotating shaft, a fixing piece, a torsion spring, a connecting piece, a limiting piece and other parts. The design realizes automatic resetting of the rotating shaft or maintains a specific angle through the elastic force of the torsion spring, thereby meeting the opening and closing requirements of the keyboard. Existing arrangements typically include a single torsion or damping mechanism to control the speed and position of opening and closing of the keyboard.

However, while this construction meets the basic use requirements to some extent, existing spindle constructions often have difficulty providing a stable self-locking mechanism during closing and opening due to the inherent nature of the torsion spring construction. This results in that a user may need a large force and even two hands to operate when attempting to open the keyboard, and the keyboard part is easily moved along with the rotation shaft, increasing difficulty and inconvenience of operation.

Disclosure of utility model

In order to overcome the technical problems, the application provides a multifunctional rotating shaft structure.

The application provides a multifunctional rotating shaft structure which adopts the following technical scheme:

The multifunctional rotating shaft structure comprises a rotating shaft, a torsion mechanism and a damping mechanism, wherein the rotating shaft, the torsion mechanism and the damping mechanism are fixedly connected with a first overturning piece, and the torsion mechanism comprises a first elastic assembly, a first driving sleeve and a first cam sleeve; the damping mechanism comprises a second elastic component, a second driving sleeve and a second cam sleeve, wherein the first cam sleeve and the second cam sleeve are sleeved on the rotating shaft, the first cam sleeve and the second cam sleeve are fixedly connected with a second overturning piece and are rotationally connected with the rotating shaft, the first cam sleeve and the second cam sleeve keep synchronously rotating, the first driving sleeve and the second driving sleeve are sleeved on the rotating shaft and synchronously rotate with the rotating shaft and can slide along the axial direction of the rotating shaft, a concave-convex matching mechanism is arranged between the first driving sleeve and the first cam sleeve or/and between the second driving sleeve and the second cam sleeve and can relatively rotate, the convex position and the convex position of the concave-convex matching mechanism are in a closed position of the overturning piece, the concave position and the convex position of the concave-convex matching mechanism are in mutual insertion connection, the first elastic component is sleeved on the rotating shaft and acts on the first driving sleeve to drive the first driving sleeve to move towards the first driving sleeve, and the second driving sleeve tends towards the second driving sleeve moves towards the second driving sleeve, and the second driving sleeve tends towards the second driving sleeve.

Through the adoption of the technical scheme, the rotating shaft structure remarkably reduces the force required by a user when the turnover part is opened or closed through the carefully designed torsion mechanism and the damping mechanism, the turnover part can be opened easily by the user only by one hand without effort or cooperation of two hands, the convenience of operation is greatly improved, meanwhile, the main body part of the equipment can be kept stable in the opening process of the turnover part and can not move along with the turnover part, the operation difficulty is reduced, the first elastic component and the second elastic component are skillfully applied, the turnover part can be automatically driven to a maximum angle (such as the state of a notebook computer in normal use) in the opening process, the continuous force application of the user is not required, the physical strength of the user is saved through the design, and the comfort of use is improved. In the closing stage, the close fit of the first driving sleeve and the first flange realizes the back locking function, so that the keyboard is effectively prevented from being accidentally opened, the safety and stability of the product are enhanced, and the concave-convex fit mechanism in the rotating shaft structure plays a key role in the opening and transition stages. When the keyboard is opened to any angle, the inner side walls of the concave-convex matching mechanisms are mutually abutted, stable support is provided for the keyboard, the free hovering function is realized, and the synchronous rotation design of the first cam sleeve and the second cam sleeve ensures the stability and the synchronism of the overturning piece in the opening and closing process.

Optionally, the concave-convex matching mechanism includes a first flange and a first groove, the first flange is disposed on the first cam sleeve, the first groove is disposed on the first driving sleeve, and the shape of the first flange is matched with the shape of the first groove.

Through adopting above-mentioned technical scheme, through the close fit of first flange and first recess, this pivot structure has realized the accurate control to the upset piece process of opening and shutting. The automatic locking device comprises a first flange, a second flange, a first driving sleeve, a second driving sleeve, a first functional slope side wall, a second functional slope side wall, a first groove and a terminal point self-locking function, wherein the first functional slope side wall is connected with the first groove in an abutting mode, the terminal point self-locking function is achieved, and the terminal point self-locking function is achieved.

Optionally, the first flange includes a first terminal surface, first terminal surface is plane or curved surface or arcwall face, the both sides of first flange all are provided with a plurality of different first function slopes of inclination, every the surface of first function slope is plane, curved surface or arcwall face.

Through adopting above-mentioned technical scheme, the both sides of first flange are provided with a plurality of different first function slopes of inclination, and the surface of every first function slope is plane, curved surface or arcwall face. The end part of the first driving sleeve is accurately abutted against the end part of the first flange during the closing stage to ensure the effective implementation of the closing and back-locking function, the side wall of the first function slope is abutted against the inner side wall of the first groove during the transition stage to realize the free hovering function at any position, and the first flange is positioned in the first groove during the opening stage, and the side wall of the first flange is abutted against the inner side wall of the first groove to realize the end point self-locking function. The first functional slopes with different inclinations can provide various rotation states according to different use scenes, smooth transition is realized in the opening stage and the transition stage, and the functional slopes are automatically opened to the end position in the steep inclined plane range without external force action, so that better operation experience and stability are provided.

Optionally, the first functional slope of one side of the first flange comprises a first slope section, a second slope section and a third slope section which are sequentially arranged, the first slope section and the third slope section are slow slopes, the second slope section is a steep slope, and the gradient of the steep slope is larger than that of the slow slope.

According to the technical scheme, the end part of the first driving sleeve is abutted against the end part of the first flange in the closing stage to realize the closing and locking function, the first flange is located in the first groove in the opening stage, the side wall of the first flange is abutted against the inner side wall of the first groove to realize stable support, the side wall of the first functional slope of the first flange is abutted against the inner side wall of the first groove in the transition stage to realize the free hovering function at any position, the first functional slope on one side of the first flange comprises a first slope section, a second slope section and a third slope section which are sequentially arranged, the first slope section and the third slope section are slow slopes, the second slope section is a steep slope, and the gradient of the steep slope is larger than that of the slow slope, so that the overturning part can be automatically opened to the end position when not acted by external force in the steep slope range, and the end point self-locking and closing and locking functions are realized after opening.

Optionally, the radial angle of the second slope segment is θ, and θ ranges from 5 ° to 20 °.

By adopting the technical scheme, when the overturning part is in the steep slope range, the radial angle theta of the second slope section is set to be in the range of 5-20 degrees, so that the overturning part can be automatically opened to the end position when the overturning part is not affected by external force, the fluency and the user experience of the whole operation are greatly improved, and the fluency of the whole operation is improved.

Optionally, the connection parts of two adjacent first functional slopes are provided with first fillets.

Through adopting above-mentioned technical scheme, the junction of two adjacent first function slopes all is provided with first fillet, this makes at the rotatory in-process of pivot structure, and the transition between each first function slope is smoother, has reduced the moment fluctuation that leads to because of the abrupt change of first function slope junction in the rotatory in-process to the operating smoothness and the user experience of keyboard in opening and closing the in-process have been promoted.

Optionally, a first bump is arranged on the first cam sleeve, a second bump is arranged on the second cam sleeve, the first bump and the second bump are directly connected through a concave-convex structure or connected through a connecting piece to realize synchronous rotation, a limiting piece is fixedly arranged on the rotating shaft, an arc-shaped limiting groove is formed in the limiting piece, the first bump or the second bump is in sliding fit with the limiting groove, the limiting piece is located between the first cam sleeve and the second cam sleeve, the end part of the first cam sleeve is connected to the side wall of the limiting piece in a ground mode, and the end part of the second cam sleeve is in butt joint with the side wall of the limiting piece.

Through adopting above-mentioned technical scheme, the first lug on the first cam sleeve and the second lug fixed connection on the second cam sleeve to slide the cooperation with the arc spacing groove of the locating part on the rotation axis, realized the synchronous rotation of first cam sleeve and second cam sleeve, ensured pivot structure stability and reliability in the closed and open in-process. The fixed connection of the first lug and the second lug enhances the rigidity of the whole structure, the limiting groove of the limiting piece is matched with the sliding of the first lug or the second lug, the rotating angle of the cam sleeve is further limited, the end point self-locking and closing back locking functions in the opening and closing process are realized, the free hovering function at any position is realized in the opening process, the smoothness and the comfort of user experience are improved, the limiting piece is located between the first cam sleeve and the second cam sleeve, the end part of the first cam sleeve is abutted to the side wall of the limiting piece, the end part of the second cam sleeve is abutted to the side wall of the limiting piece, the limiting of the first cam sleeve and the second cam sleeve is realized, the rotating stability of the first cam sleeve and the second cam sleeve is improved, and the first cam sleeve and the second cam sleeve are ensured not to move along the axis direction of the rotating shaft in the rotating process around the rotating shaft.

Optionally, the first elastic component includes first blocking piece and spring element, first blocking piece set up in on the rotation axis, spring element cover is located on the rotation axis, spring element is located first blocking piece with between the first drive sleeve, spring element's one end butt in first blocking piece, spring element's the other end butt in first drive sleeve.

Through the technical scheme, the spring element is sleeved on the rotating shaft and is positioned between the first blocking piece and the first driving sleeve, one end of the spring element is abutted against the first blocking piece, the other end of the spring element is abutted against the first driving sleeve, effective driving of the first driving sleeve towards the direction close to the first cam sleeve is achieved, stable contact and separation between the first driving sleeve and the first cam sleeve in the closing and opening processes are guaranteed, the end part of the first driving sleeve can be abutted against the end part of the first flange in the closing stage, so that a closing and locking function is achieved, the first flange is positioned in the first groove and is abutted against the inner side wall of the first groove through the side wall of the first flange in the opening stage, stable support in the opening process is achieved, and the side wall of the first function slope of the first flange is abutted against the inner side wall of the first groove in the transition stage, so that free hovering function of any position is achieved. In addition, the design of the spring element ensures that the keyboard can realize the end point self-locking function after being opened, and can realize automatic opening to the end point position in the steep slope range.

Optionally, the second elastic component includes second blocking piece and belleville spring, the second blocking piece set up in on the rotation axis, belleville spring cover is located on the rotation axis, belleville spring is located the second blocking piece with between the second drive sleeve, belleville spring's one end butt in the second blocking piece, belleville spring's the other end butt in the second drive sleeve.

Through adopting above-mentioned technical scheme, the second elastic component includes second blocking piece and belleville spring, and the second blocking piece sets up on the rotation axis, and belleville spring cover is located on the rotation axis, and belleville spring is located between second blocking piece and the second drive sleeve, and belleville spring's one end butt is in the second blocking piece, and belleville spring's the other end butt is in the second drive sleeve to ensured the keyboard and opened stability and the reliability of closing the in-process, and improved life.

Optionally, the concave-convex matching mechanism further comprises a second flange and a second groove, the second flange is arranged on the second cam sleeve, the second groove is arranged on the second driving sleeve, and the shape of the second flange is matched with the shape of the second groove.

Through adopting above-mentioned technical scheme, increased the setting of second flange and second recess, the second flange sets up on the second cam sleeve, and the second recess sets up on the second drive sleeve, and the shape of second flange and the shape phase-match of second recess have realized the accurate interlock between second flange and the second recess to open and close the in-process and improved overall structure's stability and reliability, provided better operation experience.

Optionally, the second flange includes a second end face, the second end face is a plane or a curved surface or an arc surface, a plurality of second functional slopes with different slopes are provided on two sides of the second flange, and the surface of each second functional slope is a plane, a curved surface or an arc surface.

By adopting the technical scheme, the second end face of the second flange is designed to be a plane, a curved surface or an arc surface, so that the end part of the second driving sleeve can be accurately abutted against the end face of the second flange in the closing stage, and the closing and back locking functions are realized. And a plurality of second functional slopes with different slopes are arranged on two sides of the second flange, multiple rotation states are provided according to different use scenes, and smooth transition and free hovering functions at any positions are realized in an opening stage and a transition stage. Specifically, in the opening stage and the transition stage, the lateral wall butt in the inside wall of second recess of second function slope realizes stable support and free function of hovering, can open to the extreme point position voluntarily when not receiving the exogenic action in steep inclined plane scope to provide better operation experience and stability.

In summary, the present application includes at least one of the following beneficial technical effects:

1. The user can easily open the overturning part by only one hand, and the labor is not required or the two hands cooperate, so that the convenience of operation is greatly improved;

2. the force required by a user when opening or closing the overturning component is reduced;

3. The main body part of the equipment can be kept stable in the opening process of the turnover part, and the turnover part can not move together with the turnover part, so that the operation difficulty is reduced;

4. In the closing stage, the end part of the first driving sleeve is abutted against the end part of the first flange, so that a closing and back-locking function is realized, and the keyboard is prevented from being automatically opened in a closing state;

5. In the opening stage, the first flange is positioned in the first groove, the side wall of the first flange is abutted against the inner side wall of the first groove, so that the keyboard is ensured to be stable and reliable in the opening process, and stable support is provided;

6. In the transition stage, the side wall of the first function slope of the first flange is abutted against the inner side wall of the first groove, so that the free hovering function at any position is realized, and the user experience is improved;

7. The self-locking device has a self-locking function of the end point after being opened, and solves the problem that looseness is easy to occur when the device is opened to the end point in the prior art;

8. In the steep slope range, when the overturning part is not acted by external force, the overturning part can be automatically opened to the end position, so that the convenience and reliability of keyboard operation are improved.

Drawings

Fig. 1 is a schematic structural diagram of a multifunctional rotating shaft structure in embodiment 1 of the present application.

Fig. 2 is a schematic diagram illustrating an assembly relationship of a multifunctional rotating shaft structure in embodiment 1 of the present application.

Fig. 3 is a schematic view showing the structure of the first cam sleeve and the first functional ramp in embodiment 1 of the present application.

Fig. 4 is a schematic view of the first cam sleeve according to embodiment 1 of the present application from another perspective.

Fig. 5 is a schematic view showing the structure of the second cam sleeve and the second functional ramp in embodiment 1 of the present application.

Fig. 6 is a schematic structural view of a first flip member, a second flip member and a third flip member in embodiment 2 of the present application.

Fig. 7 is a schematic diagram showing the assembly relationship of the first flipping member, the second flipping member, the third flipping member, the first rotating shaft structure and the second rotating shaft structure in embodiment 2 of the present application.

Fig. 8 is a schematic diagram showing the assembly relationship of the first shaft structure in embodiment 2 of the present application.

Fig. 9 is a schematic diagram illustrating an assembly relationship of a second shaft structure in embodiment 2 of the present application.

Fig. 10 is a schematic diagram showing the assembly relationship of the first flipping member, the second flipping member, the third rotating shaft structure and the fourth rotating shaft structure in embodiment 3 of the present application.

Fig. 11 is a schematic diagram showing the assembly relationship of the first flipping member, the second flipping member, the third flipping member, the fifth rotating shaft structure and the sixth rotating shaft structure in embodiment 4 of the present application.

Reference numerals illustrate:

1. The rotary shaft, 11, the limiting piece, 12, the limiting groove, 2, the torsion mechanism, 21, the first elastic component, 211, the first piece, 212, the spring element, 213, the first gasket, 22, the first driving sleeve, 23, the first cam sleeve, 231, the first lug, 3, the damping mechanism, 31, the second elastic component, 311, the second piece, 312, the belleville spring, 313, the second gasket, 32, the second driving sleeve, 33, the second cam sleeve, 331, the second lug, 332, the positioning groove, 4, the concave-convex matching mechanism, 41, the first flange, 411, the first end face, 42, the first groove, 43, the second flange, 431, the second end face, 44, the second groove, 5, the first function slope, 51, the first slope section, 52, the second slope section, 53, the third slope section, 54, the first round angle, 55, the fourth function slope, 56, the fifth function slope, 6, the second slope, 61, the sixth slope section, 62, the seventh slope section, the first round angle, 7, the second round angle, the third round angle, the fourth function slope, 8, and the third round angle.

Detailed Description

The application is described in further detail below with reference to fig. 1-11.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.

The multifunctional rotating shaft structure provided by the embodiment of the application is mainly applied to electronic equipment such as folding mobile phones, notebook computers and tablet computers, and is used as a key component of an equipment main body (such as a keyboard base for bearing core hardware and a processing unit in the notebook computers) and a turnover component (such as an upper cover or a screen panel integrated with a high-definition display screen). Referring to fig. 1 and 2, the multifunctional rotating shaft structure comprises a rotating shaft 1, a torsion mechanism 2 and a damping mechanism 3, wherein the rotating shaft 1 is fixedly connected with a first overturning piece 7, and the torsion mechanism 2 and the damping mechanism 3 are sleeved on the rotating shaft 1.

The torsion mechanism 2 includes a first elastic assembly 21, a first drive sleeve 22 and a first cam sleeve 23, and the damping mechanism 3 includes a second elastic assembly 31, a second drive sleeve 32 and a second cam sleeve 33. The first cam sleeve 23 and the second cam sleeve 33 are both sleeved on the rotating shaft 1, the first cam sleeve 23 and the second cam sleeve 33 are fixedly connected with the second turning piece 8 or the third turning piece 9 and are both rotationally connected with the rotating shaft 1, and the first cam sleeve 23 and the second cam sleeve 33 are fixedly connected and keep synchronous rotation.

Specifically, a first bump 231 is integrally formed on a side of the first cam sleeve 23, which is close to the second cam sleeve 33, a second bump 331 is integrally formed on a side of the second cam sleeve 33, which is close to the first cam sleeve 23, a positioning groove 332 is formed on the second bump 331, an outer sidewall of the first bump 231 is abutted against an inner sidewall of the positioning groove 332, and the first bump 231 is fixedly connected with the second bump 331.

Referring to fig. 1 and 2, the surface of the rotation shaft 1 is integrally formed with a limiting member 11, the limiting member 11 on the rotation shaft 1 is located between the first cam sleeve 23 and the second cam sleeve 33, the end portion of the first cam sleeve 23 is abutted against the side wall of the limiting member 11, the end portion of the second cam sleeve 33 is abutted against the side wall of the limiting member 11, limiting of the first cam sleeve 23 and the second cam sleeve 33 is achieved, the rotation stability of the first cam sleeve 23 and the second cam sleeve 33 is improved, and the first cam sleeve 23 and the second cam sleeve 33 are guaranteed not to move along the axial direction of the rotation shaft 1 in the rotation process around the rotation shaft 1.

The surface of the limiting piece 11 is provided with an arc-shaped limiting groove 12 matched with the first convex block 231 or the second convex block 331 in shape, and two ends of the limiting groove 12 are closed. The side of the limiting piece 11, which is close to the rotating shaft 1, is an arc surface, when the first protruding block 231 is placed in the limiting groove 12, the arc surface of the first protruding block 231 is tightly abutted on the groove bottom of the limiting groove 12, and smooth and stable sliding fit is achieved. The limit groove 12 limits the rotation angle of the first cam sleeve 23. When the first cam sleeve 23 rotates relative to the rotating shaft 1, the second protrusion 331 slides in the limiting groove 12, and the specific shape and length of the limiting groove 12 define the maximum rotation range of the first cam sleeve 23 and the second cam sleeve 33.

The first driving sleeve 22 and the second driving sleeve 32 are sleeved on the rotating shaft 1 and synchronously rotate with the rotating shaft 1 and can slide along the axial direction of the rotating shaft 1, a concave-convex matching mechanism 4 is arranged between the first driving sleeve 22 and the first cam sleeve 23 or/and between the second driving sleeve 32 and the second cam sleeve 33 and can relatively rotate, when the convex position and the convex position of the concave-convex matching mechanism 4 are opposite, the turning piece closing position is formed, and when the concave position and the convex position of the concave-convex matching mechanism 4 are mutually spliced, the turning piece opening position is formed. The first elastic component 21 is sleeved on the rotating shaft and acts on the first driving sleeve 22 to drive the first driving sleeve 22 to move towards the direction approaching the first cam sleeve 23, and the second elastic component 31 is sleeved on the rotating shaft and acts on the second driving sleeve 32 to drive the second driving sleeve 32 to move towards the direction approaching the second cam sleeve 33. In the closing phase, the end of the first driving sleeve 22 abuts against the end of the first flange 41, achieving a closing counter-locking function. In the transition stage, the inner side walls of the concave-convex matching mechanism 4 are mutually abutted, and the free hovering function at any position is realized. In the opening stage, the inner side walls of the concave-convex matching mechanism 4 are mutually abutted, so that stable support is realized.

Specifically, the first elastic component 21 includes a first blocking member 211 and a spring element 212, where the first blocking member 211 is disposed at one end of the rotating shaft 1, and may be in a nut form, so as to facilitate disassembly and maintenance. The spring element 212 is sleeved on the rotating shaft 1, the spring element 212 is located between the first blocking piece 211 and the first driving sleeve 22, one end of the spring element 212 is abutted against the first blocking piece 211, and the other end of the spring element 212 is abutted against the first driving sleeve 22. In this embodiment, the spring element 212 includes a spring rather than a torsion spring, providing torsional resistance. The first driving sleeve 22 is sleeved on the rotating shaft 1 and is in sliding fit with the rotating shaft 1, so that the first driving sleeve has good sliding performance.

The rotating shaft 1 is further provided with a first spacer 213, which is located between the spring element 212 and the first blocking member 211. The first spacer 213 is provided at the middle thereof with a through hole having a diameter matched with that of the rotation shaft 1. The first spacer 213 not only reduces the direct contact between the spring element 212 and the first stop 211, but also enhances the spring effect of the spring element 212.

In this embodiment, the concave-convex matching mechanism 4 includes two first flanges 41 and two first grooves 42, in this embodiment, the two first flanges 41 are integrally formed at one end of the first cam sleeve 23 near the first driving sleeve 22, and the two first flanges 41 are in a central symmetry structure. The two first grooves 42 are respectively disposed at one end of the first driving sleeve 22 near the first cam sleeve 23, and the two first grooves 42 are also in a central symmetrical structure. The shape of the first flange 41 is adapted to the shape of the first recess 42, enabling a precise engagement between the first flange 41 and the first recess 42, thereby providing stability and reliability during opening and closing.

Specifically, during the closing phase, the end of the first driving sleeve 22 abuts against the end of the first flange 41, thereby realizing the closing counter-locking function. In the opening stage, the first flange 41 is positioned in the first groove 42, the side wall of the first flange 41 is abutted against the inner side wall of the first groove 42 to realize the end point self-locking function, and in the transition stage, the side wall of the first functional slope 5 of the first flange 41 is abutted against the inner side wall of the first groove 42 to realize the free hovering function at any position.

The first flange 41 includes a first end face 411, the first end face 411 being a plane or a curved or arc-shaped face, and when the first end face 411 of the first flange 41 abuts against an end of the first driving sleeve 22, friction between the first end face 411 and the first driving sleeve 22 enables hovering of the first flip 7. The first flange 41 is provided with a plurality of first functional slopes 5 with different slopes on both sides, and the surface of each first functional slope 5 is a plane, a curved surface or an arc surface. The first end face 411 of the first flange 41 is a plane or curved surface or arc surface with smaller inclination, so that the end part of the first driving sleeve 22 can be accurately abutted against the end part of the first flange 41 in the closing stage, the effective implementation of the closing and back locking functions is ensured, the plurality of first function slopes 5 with different inclinations arranged on the two sides of the first flange 41 can provide a plurality of rotating states according to different using situations, smooth transition and free hovering functions at any positions are realized in the opening stage and the transition stage, and particularly in the case that the second slope section 52 is a steep slope, the end position can be automatically opened in the steep slope range without the action of external force, so that better operation experience and stability are provided.

Referring to fig. 3, the first functional slope 5 on one side of the first flange 41 includes a first slope section 51, a second slope section 52 and a third slope section 53 which are sequentially arranged, the first slope section 51 and the third slope section 53 are both slow slopes, the second slope section 52 is a steep slope, and the slope of the steep slope is greater than that of the slow slope. In the closing phase, the end of the first driving sleeve 22 abuts against the end of the first flange 41. In the opening stage, the first flange 41 is located in the first groove 42, and the side wall of the first flange 41 abuts against the inner side wall of the first groove 42. In the transition stage, the side wall of the first functional slope 5 of the first flange 41 is abutted against the inner side wall of the first groove 42, so that the free hovering function at any position is realized. Because the first slope section 51, the second slope section 52 and the third slope section 53, the first slope section 51 and the third slope section 53 are slow slopes, and the second slope section 52 is a steep slope, the automatic opening to the end position can be realized when the external force is not applied in the steep slope range, and the automatic opening has the end self-locking and the closing back-locking functions after the automatic opening.

The first functional slope 5 on the other side of the first flange 41 includes a fourth functional slope 55 and a fifth functional slope 56 which are sequentially arranged, wherein the fourth functional slope 55 is a steep slope, the fifth functional slope 56 is a gentle slope, and the gradient of the steep slope is larger than that of the gentle slope.

Referring to fig. 3 and 4, the connection between two adjacent first function slopes 5 is provided with a first rounded corner 54, so that the transition between the first function slopes 5 is smoother in the process of driving the first cam sleeve 23 to rotate by the first driving sleeve 22, and moment fluctuation caused by abrupt change of the connection between the first function slopes 5 in the rotating process is reduced, so that the operation smoothness and user experience of the keyboard in the opening and closing processes are improved.

Referring to fig. 4, the radial angle of the second slope 52 is θ, and θ may be in the range of 5 ° to 20 °, or may be 5 °,9 °,10 °,12 °,15 °, 19 °, 20 °, or the like. In the steep slope range, when not receiving external force effect, pivot structure can open to the extreme point position voluntarily, guarantees to realize the terminal self-locking function after opening, has improved the smoothness nature of whole operation.

Referring to fig. 1 and 2, in particular, the second elastic member 31 includes a second blocking member 311 and a belleville spring 312, and the second blocking member 311 is fixed to one end of the rotation shaft 1, and also in the form of a nut, so that it is convenient to assemble and disassemble and maintain. The belleville spring 312 is sleeved on the rotating shaft 1 and is positioned between the second blocking piece 311 and the second driving sleeve 32, one end of the belleville spring 312 is abutted against the second blocking piece 311, and the other end is abutted against the second driving sleeve 32. The belleville springs 312 are formed by overlapping a plurality of thin plates, so that the uniform distribution of elastic force is improved, the stress concentration and fatigue damage are reduced, and the reliability and the service life of the rotating shaft structure are improved.

The rotating shaft 1 is further sleeved with a second washer 313, and the second washer 313 is located between the belleville spring 312 and the second blocking piece 311. The first spacer 213 not only reduces direct contact between the belleville spring 312 and the second blocking member 311, but also enhances the elastic effect of the belleville spring 312.

In this embodiment, the concave-convex matching mechanism 4 further includes two second flanges 43 and two second grooves 44, and in this embodiment, the two second flanges 43 and the two second grooves 44 are both in a central symmetrical structure, and the two second grooves 44 are also in a central symmetrical structure. Two second flanges 43 are formed on one end of the second cam sleeve 33, which is close to the second driving sleeve 32, and two second grooves 44 are formed on one end of the second driving sleeve 32, which is close to the second cam sleeve 33, the shape of the second flanges 43 is matched with that of the second grooves 44, so that accurate engagement between the second flanges 43 and the second grooves 44 can be realized, and stability and reliability are provided in the opening and closing processes. While the specific structure of the second flange 43 may be the same as or similar to the structure of the first flange 41, the specific structure of the second groove 44 may be the same as or similar to the specific structure of the first groove 42.

Referring to fig. 5, the second flange 43 includes a second end face 431, and the second end face 431 may be a plane, a curved surface or an arc surface, two sides of the second flange 43 are provided with a plurality of second functional slopes 6 with different slopes, and a second rounded corner 63 is disposed between two adjacent second functional slopes 6, and the surface of each second functional slope 6 is a plane, a curved surface or an arc surface. In this embodiment, the second functional slope 6 on one side of the second flange includes a sixth slope segment 61, the second functional slope 6 on the other side of the second flange 43 includes a seventh slope segment 62, where the sixth slope segment 61 is a steep slope, the seventh slope segment 62 is a gentle slope, and similarly, the gradient of the steep slope is greater than that of the gentle slope, so as to realize an automatic hovering function on the gentle slope, and to realize automatic opening to an end position when no external force acts within the steep slope, and to have end self-locking and closing counter-locking functions after opening.

Referring to fig. 1 and 2, the multifunctional rotating shaft structure of the present embodiment is arranged in an overall layout, in which the first blocking member 211, the first spacer 213, the spring element 212, the first driving sleeve 22, the first cam sleeve 23, the limiting member 11, the second cam sleeve 33, the second driving sleeve 32, the belleville spring 312, the second spacer 313 and the second blocking member 311 are orderly arranged along the length direction of the rotating shaft 1, thereby ensuring compactness and functionality of the rotating shaft structure.

The torque mechanism 2 and the damping mechanism 3 are carefully designed, the force required by a user when the turnover part is opened or closed is obviously reduced, the turnover part can be opened easily by a user only by one hand without effort or cooperation of two hands, the convenience of operation is greatly improved, meanwhile, the main body part of the equipment can be kept stable in the opening process of the turnover part and can not move together with the turnover part, the operation difficulty is reduced, the ingenious application of the first elastic component 21 and the second elastic component 31 enables the turnover part of an electronic product to be automatically driven to the maximum angle (such as the state when the notebook computer is normally used) in the opening process, the continuous force application of the user is not required, the physical strength of the user is saved, and the use comfort is improved. In the closing stage, the close fit of the first driving sleeve 22 and the first flange 41 realizes the back locking function, so that the keyboard is effectively prevented from being opened accidentally, the safety and stability of the product are enhanced, and the concave-convex fit mechanism 4 in the rotating shaft structure plays a key role in the opening and transition stages. When the keyboard is opened to any angle, the inner side walls of the concave-convex matching mechanism 4 are mutually abutted, so that stable support is provided for the keyboard, the free hovering function is realized, and the synchronous rotation design of the first cam sleeve 23 and the second cam sleeve 33 ensures the stability and the synchronism of the turnover piece in the opening and closing process.

Example 2

Referring to fig. 6, the multifunctional rotating shaft structure in this embodiment of the present application further includes a first turnover member 7, a second turnover member 8, and a third turnover member 9, where the second turnover member 8 and the third turnover member 9 are respectively connected to two ends of the first turnover member 7 in a rotating manner. The first turnover part 7 is used for connecting a turnover part (such as an upper cover or a screen panel integrated with a high-definition display screen), the second turnover part 8 and the third turnover part 9 are used for connecting a device main body (such as a keyboard base for bearing core hardware and a processing unit in a notebook computer), the first turnover part 7 is rotationally connected with the second turnover part 8 through a first rotating shaft structure, and the first turnover part 7 is rotationally connected with the third turnover part 9 through a second rotating shaft structure.

Referring to fig. 7 and 8, in particular, the first rotating shaft structure includes a rotating shaft 1 and a torsion mechanism 2, and one end of the rotating shaft 1 of the first rotating shaft structure is inserted into one end of the first tilting member 7 and fixedly connected with the first tilting member 7. The second rotating shaft structure comprises a rotating shaft 1 and a damping mechanism 3, and one end of the rotating shaft 1 of the second rotating shaft structure is inserted into the other end of the first turning piece 7 and is fixedly connected with the first turning piece 7, so that the two rotating shafts 1 are fixed together.

Referring to fig. 7 and 8, the torsion mechanism 2 of the first rotary shaft structure is identical in structure to the torsion mechanism 2 of embodiment 1, and also includes a first elastic member 21, a first driving sleeve 22, and a first cam sleeve 23. The first cam sleeve 23 is sleeved on the rotating shaft 1, and the first cam sleeve 23 is rotatably connected with the rotating shaft 1. The second overturning piece 8 is sleeved on the outer side wall of the first cam sleeve 23, and the first cam sleeve 23 is fixedly connected with the second overturning piece 8. The first driving sleeve 22 is sleeved on the rotating shaft 1 and synchronously rotates with the rotating shaft 1 and can slide along the axial direction of the rotating shaft 1, the concave-convex matching mechanism 4 is arranged between the first driving sleeve 22 and the first cam sleeve and can relatively rotate, the convex position and the convex position of the concave-convex matching mechanism 4 are opposite to each other, the turning piece is closed, and the concave position and the convex position of the concave-convex matching mechanism 4 are opposite to each other, and the turning piece is opened.

Referring to fig. 7 and 8, the first elastic member 21 is sleeved on the rotating shaft 1 and acts on the first driving sleeve 22 to drive the first driving sleeve 22 to move towards the direction approaching the first cam sleeve 23, and the second elastic member 31 is sleeved on the rotating shaft and acts on the second driving sleeve 32 to drive the second driving sleeve 32 to move towards the direction approaching the second cam sleeve 33.

Referring to fig. 7 and 9, in the present embodiment, the damping mechanism 3 of the second rotation shaft structure is identical in structure to the damping mechanism 3 of embodiment 1, and also includes a second elastic member 31, a second driving sleeve 32, and a second cam sleeve 33. The second cam sleeve 33 is sleeved on the rotating shaft 1 and is in rotary connection with the rotating shaft 1, and the second overturning piece 8 is sleeved on the surface of the second cam sleeve 33 and is fixedly connected with the second cam sleeve 33, so that rotary connection between the first overturning piece 7 and the second overturning piece 8 is realized. The second driving sleeve 32 is sleeved on the rotating shaft 1 and synchronously rotates with the rotating shaft 1 and can slide along the axial direction of the rotating shaft 1, the concave-convex matching mechanism 4 is arranged between the second driving sleeve 32 and the second cam sleeve 33 and can relatively rotate, when the convex position and the convex position of the concave-convex matching mechanism 4 are opposite, the second driving sleeve 32 is a closed position of the turnover piece, and when the concave position and the convex position of the concave-convex matching mechanism 4 are mutually spliced, the second driving sleeve 32 is an open position of the turnover piece.

Referring to fig. 7, the first flipping member 7 drives the two rotation shafts 1 to maintain synchronous rotation during flipping, thereby driving the first driving sleeve 22 and the second driving sleeve 32 to synchronously rotate, thereby simultaneously driving the first cam sleeve 23 and the second cam sleeve 33 to rotate.

Referring to fig. 8 and 9, in the present embodiment, the surface of each rotation shaft 1 is integrally formed with a limiting member 11, wherein the limiting member 11 on one rotation shaft 1 is located between the first cam sleeve 23 and the first turning member 7, one end of the first turning member 7 abuts against one side of the limiting member 11, and the end of the first cam sleeve 23 abuts against the other side of the limiting member 11. The limiting of the first cam sleeve 23 is realized, the stability of the first cam sleeve 23 rotating around the rotating shaft 1 is improved, and the first cam sleeve 23 is ensured not to move along the axial direction of the rotating shaft 1 in the process of rotating around the rotating shaft 1.

The other limiting piece 11 on the rotating shaft 1 is located between the second cam sleeve 33 and the second overturning piece 8, one end of the second overturning piece 8 is abutted against one side of the limiting piece 11, and the end of the second cam sleeve 33 is abutted against the other side of the limiting piece 11. The limit of the second cam sleeve 33 is realized, the stability of the second cam sleeve 33 rotating around the rotating shaft 1 is improved, and the second cam sleeve 33 is ensured not to move along the axial direction of the rotating shaft 1 in the process of rotating around the rotating shaft 1.

With continued reference to fig. 8 and 9, the surface of the limiting member 11 is provided with an arc-shaped limiting groove 12 matched with the first bump 231 in shape, and two ends of the limiting groove 12 are closed. When the first protruding block 231 and/or the second protruding block 331 are placed in the limiting groove 12, the arc-shaped surface of the first protruding block 231 and/or the second protruding block 331 is tightly abutted on the groove bottom of the limiting groove 12, so that smooth and stable sliding fit is realized. The limiting groove 12 limits the rotation angle of the first cam sleeve 23 and/or the second cam sleeve 33. When the first cam sleeve 23 and/or the second cam sleeve 33 rotate relative to the rotating shaft 1, the first protrusion 231 and/or the second protrusion 331 slide in the limiting groove 12, and the specific shape and length of the limiting groove 12 define the maximum rotation range of the first cam sleeve 23 and the second cam sleeve 33.

Referring to fig. 8, the torsion mechanism 2 of the first shaft structure of the present embodiment is arranged in order along the length direction of the shaft 1 with the first stopper 211, the first spacer 213, the spring member 212, the first driving sleeve 22, the first cam sleeve 23 and the stopper 11 in the overall layout, ensuring compactness and functionality of the shaft structure.

Referring to fig. 9, the damping mechanism 3 of the second rotary shaft structure of the present embodiment is arranged in order along the length direction of the rotary shaft 1 with the second cam sleeve 33, the second drive sleeve 32, the belleville springs 312, the second shims 313 and the second stoppers 311 in the overall layout, ensuring compactness and functionality of the rotary shaft structure.

The implementation principle of the embodiment is that in the closing stage, the end part of the first driving sleeve 22 is abutted against the end part of the first flange 41 to realize a closing and locking function, in the opening stage, the inner side walls of the concave-convex matching mechanism 4 are abutted against each other to realize stable support, in the transition stage, the inner side walls of the concave-convex matching mechanism 4 are abutted against each other to realize a free hovering function at any position, and meanwhile, the damping mechanism 3 enables the first cam sleeve 23 and the second cam sleeve 33 to realize the free hovering function at any position at the same time, and the opening has the end point self-locking and closing and locking functions. The rotation shaft 1 serves as a supporting structure, provides a rotation basis, and ensures the smoothness and reliability of the operation of the keyboard. The rotational connection of the second cam sleeve 33 with the rotation shaft 1 cooperates with the operation of the second elastic member 31, improving the stability of the keyboard in use. The rotational connection of the first cam sleeve 23 with the rotary shaft 1 cooperates with the operation of the first elastic member 21 to achieve excellent performance of the torsion mechanism 2, further improving stability and reliability of the keyboard in opening and closing processes. The design of the laminated spring ensures that the elastic force is distributed more uniformly, reduces stress concentration and fatigue damage, and improves the reliability and the service life of the rotating shaft structure.

Example 3

Referring to fig. 10, the multifunctional rotating shaft structure in this embodiment of the present application includes a first turnover member 7, a second turnover member 8, and a third turnover member 9, where the second turnover member 8 and the third turnover member 9 are respectively connected to two ends of the first turnover member 7 in a rotating manner. The first flip 7 is used for connecting flip components (such as a top cover or a screen panel integrated with a high definition display screen), and the second flip 8 and the third flip 9 are used for connecting a device main body (such as a keyboard base for carrying core hardware and a processing unit in a notebook computer). Specifically, the first turnover piece 7 is rotationally connected with the second turnover piece 8 through a third rotating shaft structure, and the first turnover piece 7 is rotationally connected with the third turnover piece 9 through a fourth rotating shaft structure. The specific structure, the mounting manner and the working principle of the third rotating shaft structure are identical to those of the multifunctional rotating shaft structure in the embodiment 1, and the specific structure, the mounting manner and the working principle of the fourth rotating shaft structure are identical to those of the second rotating shaft structure in the embodiment 2, and are not repeated herein.

Example 4

Referring to fig. 11, the multifunctional rotating shaft structure provided by the embodiment of the application includes a first turnover member 7, a second turnover member 8 and a third turnover member 9, where the second turnover member 8 and the third turnover member 9 are respectively connected to two ends of the first turnover member 7 in a rotating manner. The first flip 7 is used for connecting flip components (such as a top cover or a screen panel integrated with a high definition display screen), and the second flip 8 and the third flip 9 are used for connecting a device main body (such as a keyboard base for carrying core hardware and a processing unit in a notebook computer). The first turnover piece 7 is rotationally connected with the second turnover piece 8 through a fifth rotating shaft structure, and the first turnover piece 7 is rotationally connected with the third turnover piece 9 through a sixth rotating shaft structure. The specific structure, mounting manner and working principle of the fifth rotating shaft structure and the sixth rotating shaft structure are exactly the same as those of the multifunctional rotating shaft structure in embodiment 1, and are not described herein.

The above embodiments are not intended to limit the scope of the application, so that the equivalent changes of the structure, shape and principle of the application are covered by the scope of the application.

Claims

1. A multifunctional rotating shaft structure is characterized by comprising a rotating shaft (1) fixedly connected with a first overturning piece (7), a torsion mechanism (2) and a damping mechanism (3), wherein the torsion mechanism (2) comprises a first elastic component (21), a first driving sleeve (22) and a first cam sleeve (23), the damping mechanism (3) comprises a second elastic component (31), a second driving sleeve (32) and a second cam sleeve (33), the first cam sleeve (23) and the second cam sleeve (33) are sleeved on the rotating shaft (1), the first cam sleeve (23) and the second cam sleeve (33) are fixedly connected with a second overturning piece (8) or a third overturning piece (9) and are rotationally connected with the rotating shaft (1), the first cam sleeve (23) and the second cam sleeve (33) keep synchronous rotation, the first driving sleeve (22) and the second driving sleeve (32) are sleeved on the rotating shaft (1) and can slide along the axial direction of the rotating shaft (1), the novel cam driving device comprises a first driving sleeve (22), a first cam sleeve (23) and/or a second driving sleeve (32) and a second cam sleeve (33), wherein a concave-convex matching mechanism (4) is arranged between the first driving sleeve and the second cam sleeve and can rotate relatively, a turning piece closing position is formed when a convex position and a convex position of the concave-convex matching mechanism (4) are opposite, a turning piece opening position is formed when the concave position and the convex position of the concave-convex matching mechanism (4) are mutually inserted, a first elastic component (21) is sleeved on a rotating shaft (1) and acts on the first driving sleeve (22) to drive the first driving sleeve (22) to move towards a direction approaching to the first cam sleeve (23), and a second elastic component (31) is sleeved on the rotating shaft (1) and acts on the second driving sleeve (32) to drive the second driving sleeve (32) to move towards a direction approaching to the second cam sleeve (33).

2. The multifunctional rotating shaft structure according to claim 1, wherein the concave-convex matching mechanism (4) comprises a first flange (41) and a first groove (42), the first flange (41) is arranged on the first cam sleeve (23), the first groove (42) is arranged on the first driving sleeve (22), and the shape of the first flange (41) is matched with the shape of the first groove (42).

3. A multifunctional rotating shaft structure according to claim 2, characterized in that the first flange (41) comprises a first end face (411), the first end face (411) is a plane or a curved surface or an arc surface, a plurality of first functional slopes (5) with different slopes are arranged on two sides of the first flange (41), and the surface of each first functional slope (5) is a plane, a curved surface or an arc surface.

4. A multifunctional rotating shaft structure according to claim 3, characterized in that the first functional slope (5) at one side of the first flange (41) comprises a first slope section (51), a second slope section (52) and a third slope section (53) which are sequentially arranged, the first slope section (51) and the third slope section (53) are both slow slopes, the second slope section (52) is a steep slope, and the gradient of the steep slope is larger than that of the slow slope.

5. A multifunctional rotating shaft structure according to claim 4, characterized in that the radial angle of the second slope section (52) is θ, and θ is in the range of 5-20 °.

6. A multifunctional rotating shaft structure according to claim 3, characterized in that the connection of two adjacent first functional slopes (5) is provided with a first rounded corner (54).

7. A multifunctional rotating shaft structure according to any one of claims 1-6 is characterized in that a first protruding block (231) is arranged on the first cam sleeve (23), a second protruding block (331) is arranged on the second cam sleeve (33), the first protruding block (231) and the second protruding block (331) are directly connected or connected through a connecting piece to realize synchronous rotation, a limiting piece (11) is fixedly arranged on the rotating shaft (1), an arc-shaped limiting groove (12) is formed in the limiting piece (11), the first protruding block (231) or the second protruding block (331) is in sliding fit with the limiting groove (12), the limiting piece (11) is located between the first cam sleeve (23) and the second cam sleeve (33), the end portion of the first cam sleeve (23) is abutted to the side wall of the limiting piece (11), and the end portion of the second cam sleeve (33) is abutted to the side wall of the limiting piece (11).

8. A multifunctional rotating shaft structure according to any one of claims 1-6, characterized in that the first elastic component (21) comprises a first blocking piece (211) and a spring element (212), the first blocking piece (211) is arranged on the rotating shaft (1), the spring element (212) is sleeved on the rotating shaft (1), the spring element (212) is located between the first blocking piece (211) and the first driving sleeve (22), one end of the spring element (212) is abutted to the first blocking piece (211), and the other end of the spring element (212) is abutted to the first driving sleeve (22).

9. A multifunctional rotating shaft structure according to any one of claims 1-6, characterized in that the second elastic component (31) comprises a second blocking piece (311) and a disc spring (312), the second blocking piece (311) is arranged on the rotating shaft (1), the disc spring (312) is sleeved on the rotating shaft (1), the disc spring (312) is located between the second blocking piece (311) and the second driving sleeve (32), one end of the disc spring (312) is abutted to the second blocking piece (311), and the other end of the disc spring (312) is abutted to the second driving sleeve (32).

10. A multifunctional rotating shaft structure according to any one of claims 1-6, characterized in that said concave-convex fitting mechanism (4) further comprises a second flange (43) and a second groove (44), said second flange (43) is disposed on said second cam sleeve (33), said second groove (44) is disposed on said second driving sleeve (32), and the shape of said second flange (43) is adapted to the shape of said second groove (44).

11. A multifunctional rotating shaft structure according to claim 10, characterized in that the second flange (43) comprises a second end face (431), the second end face (431) is a plane or a curved surface or an arc surface, two sides of the second flange (43) are provided with second functional slopes (6) with different slopes, and the surface of each second functional slope (6) is a plane, a curved surface or an arc surface.