CN113534892A

CN113534892A - Rotating shaft mechanism and equipment with opening and closing performance

Info

Publication number: CN113534892A
Application number: CN202010322841.XA
Authority: CN
Inventors: 龙腾; 朱明超; 杨峻; 钟梅芳; 杨庆志
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-04-22
Filing date: 2020-04-22
Publication date: 2021-10-22
Also published as: WO2021213054A1

Abstract

The application provides a rotating shaft mechanism and equipment with opening and closing performance, wherein the rotating shaft mechanism can provide two torsion forces, namely constant torsion force provided by the cooperation between a bracket and a constant torsion structure of a rotating shaft, and variable torsion force provided by the cooperation between a swing arm, a roller and a variable torsion structure of the rotating shaft. And, the inclined plane design of the guide inclined plane of the roller bin of the swing arm can enable the rotating shaft to be under the same rotating angle, when the roller is located at the bottom end of the roller bin and is relatively located at the top end of the roller bin, a larger extrusion force is generated between the roller and the torque-variable structure to generate a larger damping force, so that a larger torque is provided for the rotating shaft, the rotating shaft has differentiated torques in the same angle and opposite rotating directions, the equipment provided with the rotating shaft mechanism has the characteristic of light opening and heavy closing, and the equipment is opened and closed by one hand.

Description

Rotating shaft mechanism and equipment with opening and closing performance

Technical Field

The present disclosure relates to the field of electronic devices, and more particularly, to a hinge mechanism and a device with opening and closing functions.

Background

The pivot is as the key part of equipment, is the bridge of the different subassemblies of connecting device, and the relative angle is controlled through hinged joint realization relative rotation to the different subassemblies of equipment to satisfy comfortable user experience requirement, for example, screen subassembly and host computer subassembly are connected through the pivot to the notebook computer, and the during operation is realized through the pivot with screen subassembly rotation certain angle and fixed.

In opening and closing a device, achieving a one-handed opening of the device is a very important user experience. Taking a notebook computer as an example, the lighter the screen assembly is, the easier the screen assembly is to be opened by one hand, otherwise the less easy the screen assembly is to be opened by one hand, the lighter the host assembly is, the less easy the host assembly is to be opened by one hand, otherwise the more easy the host assembly is to be opened by one hand.

However, the screen assembly of the current notebook computer is heavy and the host assembly is light, so that the problem of light weight is caused, and the device is not easy to be opened by one hand.

Disclosure of Invention

The application provides a pivot mechanism and equipment that has the performance that opens and shuts, cooperation between the change torsional force structure through the swing arm of pivot mechanism, roller and pivot can provide the torsion of differentiation for the equipment that disposes this pivot mechanism, promptly, when equipment is opened, this pivot mechanism can provide less torsion, and when equipment was closed, this pivot mechanism can provide great torsion to the singlehanded of realizing equipment opens and shuts, improves user experience.

In a first aspect, a hinge mechanism is provided for connecting a first body and a second body of a device, comprising: the device comprises a bracket, a swing arm, a roller and a rotating shaft;

the rotating shaft can be fixedly connected with the first body and comprises a constant torque force structure and a variable torque force structure;

the bracket can be fixedly connected with the second body, sleeved on the constant torque structure and connected with the swing arm;

the swing arm is provided with a roller bin with an opening facing the rotating shaft and accommodating the roller, the roller is respectively connected with the torque-variable structure and the roller bin in a rotating way, when the rotating shaft rotates around a first direction, the rotating shaft can drive the roller to rotate towards the top end of the roller bin, when the rotating shaft rotates around a second direction opposite to the first direction, the rotating shaft can drive the roller to rotate towards the bottom end of the roller bin, wherein,

the inner wall of the roller bin includes a guide ramp that slopes away from the axis of rotation in a direction extending from the bottom end to the top end to provide greater damping force with the torque transmitting structure when the roller is at the bottom end relative to when the roller is at the top end at the same angle of rotation.

The first direction is an opening direction of the device and the second direction is a closing direction of the device. Illustratively, the first direction is a clockwise direction and the second direction is a counterclockwise direction.

It will be appreciated that when the apparatus in which the spindle mechanism is provided is in the open condition, the rollers are located at the top end of the roller magazine, the top end of the roller magazine representing one extreme position of the rollers on the roller magazine; when the device is in the closed state, the rollers are located at the bottom end of the roller magazine, which bottom end of the roller magazine represents another extreme position of the rollers on the roller magazine.

In the direction extending from the bottom end to the top end, the guide slope slopes away from the rotation axis, meaning that the bottom end of the guide slope is closer to the rotation axis than the top end of the guide slope, the top end of the guide slope is closer to the top end of the roller magazine, and the bottom end of the guide slope is closer to the bottom end of the roller magazine.

According to the rotating shaft mechanism provided by the application, the rotating shaft mechanism can provide two torsion forces, namely constant torsion force provided by the matching between the bracket and the constant torsion force structure of the rotating shaft, and variable torsion force provided by the matching between the swing arm, the roller and the variable torsion force structure of the rotating shaft. And the roller bin of the swing arm is provided with a guide inclined plane, and the guide inclined plane inclines towards the direction far away from the rotating shaft in the extending direction from the bottom end of the roller bin to the top end of the roller bin.

With reference to the first aspect, in certain implementations of the first aspect, the swing arm is rotatably connected to the bracket, and the swing arm is rotatable around an axial direction of the rotating shaft; and the number of the first and second groups,

the rotating shaft mechanism further comprises an elastic piece, one end of the elastic piece is fixed on the support, and the other end of the elastic piece abuts against the swing arm.

The application provides a pivot mechanism, because the design of direction inclined plane, when the roller rotated towards the bottom in roller storehouse, probably resulted in the card shell between roller and the torque-changing structure (or pivot), the rotation between swing arm and the support is connected, can effectively avoid the card shell between roller and the torque-changing structure. The elastic piece can provide pre-pressure for the swing arm, and when the swing arm rotates towards the direction far away from the rotating shaft, the roller is tightly pressed on the variable torsion structure through the compressed elastic piece so as to generate larger extrusion force (damping force) between the roller and the variable torsion structure, and therefore, larger torsion is provided for the rotating shaft, so that the rotating shaft has differentiated torsion in the same angle and opposite rotating directions, and the equipment provided with the rotating shaft mechanism has the characteristics of light opening and heavy closing. With reference to the first aspect, in certain implementations of the first aspect, the torque converter structure includes a plurality of connected torque converter sections surrounding an axial direction of the rotating shaft, and the damping force between the roller and the plurality of torque converter sections is gradually increased along the first direction.

The application provides a rotating shaft mechanism, the torque-changing structure comprises a plurality of torque-changing areas, and the damping force between the roller and the plurality of torque-changing areas is gradually increased along the first direction, so that the damping force of the device in the opening process is gradually increased, i.e. the hinge mechanism provides a smaller damping force when the device is just opened, so that the user can open the device with a smaller force, the damping force gradually increases as the angle of opening increases, when the device is opened to an angle in a normal use state, a larger damping force may balance the self-weight of the first body to enhance the stability of the first body, especially, when the first body has a touch-function screen, the larger damping force can balance the clicking force of the user for clicking the screen to enhance the stability of the first body when the screen is clicked, and in short, the stability of the device in the using process can be enhanced.

With reference to the first aspect, in certain implementations of the first aspect, the radii of the plurality of torque converter zones gradually increase along the first direction.

The application provides a pivot mechanism, through setting up the change torque zone of a plurality of reducing, along first direction, but the damping force of gradual grow is in order to provide the gradual grow to the extrusion force between roller and a plurality of change torque zone.

With reference to the first aspect, in certain implementations of the first aspect, a clearance fit is provided between the torque conversion zone with the smallest radius of the plurality of torque conversion zones and the roller.

The utility model provides a pivot mechanism, through the cooperation design between the minimum variable torque area of radius and the roller for intermittent type cooperation, make the damping force between the minimum variable torque area of radius and the roller be 0 basically, the holistic torsion of pivot is minimum, only by invariable torsion provides, thus, on the one hand, in the process that equipment just begins to be opened, the intermittent type cooperation of roller and variable torque area is convenient for the user to open equipment by one hand, on the other hand, in the process that equipment is closed soon, the intermittent type cooperation between roller and the variable torque area is convenient for close equipment and reduces residual torsion.

With reference to the first aspect, in certain implementations of the first aspect, the plurality of torque conversion areas include three torque conversion areas, which are arranged in order of increasing radius, a central angle of the first torque conversion area is between 0 degree and 15 degrees, a central angle of the second torque conversion area is between 15 degrees and 90 degrees, and a central angle of the third torque conversion area is between 90 degrees and 135 degrees.

With reference to the first aspect, in certain implementations of the first aspect, a swing arm limiting structure is disposed on the bracket and located on a side of the swing arm close to the rotating shaft, so as to limit a displacement amount of the swing arm rotating towards the rotating shaft.

The application provides a pivot mechanism through set up the swing arm limit structure who is used for restricting the swing arm towards pivot pivoted displacement volume on the support, can avoid leading to the card shell between swing arm and the pivot owing to the excessive rotation of swing arm. In addition, in the structure of the torque converter structure comprising a plurality of torque converter areas, when the torque converter area with the smallest radius (for example, the first torque converter area) is in intermittent fit with the roller, the position of the swing arm is limited through the swing arm limiting structure under the action of the elastic element, and the intermittent fit between the roller and the torque converter areas can be better realized.

With reference to the first aspect, in certain implementation manners of the first aspect, a shaft sleeve is disposed on the bracket and sleeved on the constant torque structure, and the swing arm limiting structure is disposed at an end of the shaft sleeve.

With reference to the first aspect, in certain implementations of the first aspect, the guide slope is a curved surface.

The application provides a pivot mechanism, through setting up the direction inclined plane into the cambered surface, area of contact between the face of cylinder of multiplicable direction inclined plane and roller can increase frictional force and reduce wear.

With reference to the first aspect, in certain implementations of the first aspect, the inner wall of the roller bin further includes a top arc surface and a bottom arc surface connecting the guide ramps.

The application provides a pivot mechanism through setting up the top cambered surface and the bottom cambered surface that link to each other with the direction inclined plane, at the relative roller storehouse pivoted in-process of roller, can make and have better cooperation between roller and the roller storehouse to make the roller can realize better rotation on the roller storehouse.

With reference to the first aspect, in certain implementations of the first aspect, the radii of the top arc surface and the bottom arc surface are the same.

With reference to the first aspect, in certain implementations of the first aspect, the radii of the top arc surface and the bottom arc surface are greater than the radius of the roller.

The application provides a pivot structure, the radius through setting up top cambered surface and bottom cambered surface is greater than the radius of roller, can realize the face contact in roller and roller storehouse to realize the stable contact between roller and the roller storehouse, and, can reduce the friction between roller and the roller storehouse in order to reduce wearing and tearing, improve pivot mechanism's life-span.

With reference to the first aspect, in certain implementations of the first aspect, a radius of the torque-varying structure is less than or equal to a radius of the constant torque structure.

The application provides a pivot mechanism, the radius through setting up the change torque structure is less than or equal to invariable torque mechanism's radius, in the structure of change torque structure setting between invariable torque radius, the assembly between pivot and the support of being convenient for.

In a second aspect, an apparatus with opening and closing performance is provided, which includes a first body, a second body and a rotating shaft mechanism as in any one of the first aspect, wherein the first body is connected to a rotating shaft of the rotating shaft mechanism, and the second body is connected to a bracket of the rotating shaft mechanism.

With reference to the second aspect, in some implementation manners of the second aspect, the device is a notebook computer, the first body is a screen component, and the second body is a host component.

Drawings

Fig. 1 is a schematic exploded view of a notebook computer provided in the present application.

Fig. 2 is a schematic assembly view of a notebook computer provided herein.

Fig. 3 is a schematic assembly view of the spindle mechanism provided in the present application.

Fig. 4 is a schematic exploded view of the spindle mechanism provided in the present application.

Fig. 5 is a schematic block diagram of a stent provided herein.

Fig. 6 is a schematic structural view of a rotating shaft provided in the present application.

Fig. 7 is a schematic structural view of a swing arm mechanism provided in the present application.

Fig. 8 is another schematic cross-sectional view of the spindle mechanism provided herein.

Fig. 9 is a schematic cross-sectional view of a swing arm provided herein.

Fig. 10 is a schematic diagram of the relationship of the rollers to the shaft as provided by the present application.

Fig. 11 is another schematic cross-sectional view of a swing arm provided herein.

Fig. 12 is a schematic cross-sectional view of a torque converter structure provided herein.

Fig. 13-15 are schematic cross-sectional views of different states of the device provided by the present application in which the rotating shaft is engaged with the swing arm mechanism during opening.

Fig. 16-18 are schematic cross-sectional views of different states of the device provided by the present application in which the rotating shaft is engaged with the swing arm mechanism during closing.

Fig. 19 is another schematic assembly view of the spindle mechanism provided in the application.

FIG. 20 is another exemplary cross-sectional view of a spindle mechanism provided herein.

Fig. 21 is another schematic assembly view of the spindle mechanism provided in the present application.

Description of the reference numerals

The electronic device 10, the hinge mechanism 100, the screen assembly 200, and the host assembly 300.

The torque converter comprises a rotating shaft 110, a constant torque structure 111, a torque converter structure 112, a first torque converter region 1121, a second torque converter region 1122, a third torque converter region 1123, a fixed structure 113 and a stop structure 114.

Support 120, axle sleeve 121, clearance 122 between the axle sleeve, backup pad 123, fastening hole 1231 on the backup pad 123, swing arm connection structure 124, the activity hole 1241 on the swing arm connection structure 124, swing arm limit structure 125, breach 126.

The device comprises a swing arm mechanism 130, a swing arm 131, a through hole 1311, a roller bin 1312, a top end 1312-1 of the roller bin 1312, a bottom end 1312-2 of the roller bin 1312, a guide inclined plane 1312A of the roller bin 1312, a top end 1312A-1 of the guide inclined plane 1312A, a bottom end 1312A-2 of the guide inclined plane 1312A, a top arc surface 1312B, a bottom arc surface 1312C, a blind hole 1313, rollers 132, an elastic piece 133 and a movable piece 1301.

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings.

The hinge mechanism of the present application can be applied to any device with opening and closing performance, for example, a notebook computer, a foldable mobile phone, etc.

In order to facilitate description of an application scenario of the rotating shaft mechanism, a notebook computer is taken as an example, and a simple description is made on application of the rotating shaft mechanism in the device.

Fig. 1 is a schematic exploded view of a notebook computer provided in the present application, and fig. 2 is a schematic assembly view of the notebook computer provided in the present application.

Referring to fig. 1 and 2, the notebook computer 10 includes a rotation shaft mechanism 100, a screen assembly 200 and a host assembly 300, wherein the screen assembly 200 and the host assembly 300 are rotatably connected through the rotation shaft mechanism 100, and specifically, one end of the rotation shaft mechanism 100 is fixedly connected with the screen assembly 200, and the other end is fixedly connected with the host assembly 300. When the notebook computer 10 is opened, the screen assembly 200 rotates clockwise relative to the host assembly 300, and the torque provided by the hinge mechanism 100 keeps the notebook computer 10 in a stable open state, and when the notebook computer 10 is closed, the screen assembly 200 rotates counterclockwise relative to the host assembly 300, and the torque provided by the hinge mechanism 100 makes the screen assembly 200 fall freely.

It is to be understood that the apparatus provided herein may be provided with one or more spindle mechanisms, and the present application is not limited thereto, for example, one, two, three, and more spindle mechanisms may be provided in the apparatus. Illustratively, two rotating shaft mechanisms 100 are provided in the notebook computer 10 shown in fig. 1, for example, the two rotating shaft mechanisms 100 are symmetrically provided along the axial direction of the rotating shaft mechanisms 100.

The torsion of the hinge mechanism 100 is provided by a damping force (or friction force), which is naturally smaller and better when the notebook computer 10 is opened, and when the notebook computer 10 is closed, in order to avoid the notebook computer 10 being automatically closed under the action of the gravity of the screen assembly to cause damage to the device, a larger damping force needs to be provided by the hinge mechanism 100 to balance the gravity of the screen assembly 200.

Thus, in principle, the lighter the screen assembly 200, the less damping force the hinge mechanism 100 will generate, meaning that the less force the user can apply, the easier it is to effect one-handed opening of the device, and vice versa. In another aspect, the lighter the host assembly 300, the greater the damping force generated by the hinge mechanism 100, and the easier it is to lift the host assembly 300 during the opening process of the notebook computer, and the less easy it is to open with one hand, and vice versa.

Under the lightweight trend and the touch screen trend of current notebook, the weight of screen subassembly becomes heavy, and the weight of host computer subassembly becomes light, has appeared "heavy first foot is light" problem, if still adopt the pivot mechanism of the invariable torsion that has now provided, in order to realize notebook computer's the function of opening and shutting, the invariable torsion that the pivot mechanism provided must can be great, under this condition, must take up the host computer subassembly at the in-process that notebook computer was opened, hardly realize notebook computer's one hand and open.

Based on this, the present application provides a hinge mechanism, which can provide differential torque for opening and closing (for short, "opening and closing") of a device (e.g., a notebook computer) equipped with the hinge mechanism, so that the device has the characteristics of light opening and heavy closing. By "on-off light and heavy" of the device is meant that the hinge mechanism provides a low torque when the device is opened to enable one-handed opening of the device, and a higher torque when the device is closed to allow one portion of the device (e.g., the screen assembly) to be freely closed onto another portion (e.g., the host assembly).

Briefly, the rotating shaft mechanism of the application can provide two torsion forces, namely a constant torsion force and a variable torsion force, which are reasonably combined to realize the opening and closing of the device. The torque force is smaller in the process that the equipment is opened, the torque force is larger in the process that the equipment is closed, and the constant torque force is unchanged in the two processes, so that the equipment can be opened and closed by one hand.

In addition, this application still provides a equipment that has the performance of opening and shutting, and this equipment disposes foretell pivot mechanism, and this pivot mechanism rotates two parts of equipment to be connected, realizes the one-hand of equipment and opens and shuts.

For convenience of description, the present application defines two openable and closable portions of the device, which are a first body and a second body, respectively, the first body may be a component connected to a rotating shaft in the rotating shaft mechanism, and the second body is a component connected to a bracket in the rotating shaft mechanism, when the first body is opened, the rotating shaft and the bracket may be driven to rotate relatively, so that the first body and the second body rotate relatively. Taking a notebook computer as an example, the first body may be a screen component, and the second body may be a host component.

In addition, the present application also defines two rotational directions, a first direction and a second direction, respectively. The first direction is an opening direction of the apparatus, and the rotating shaft of the rotating shaft mechanism rotates about the first direction when the apparatus is opened. The second direction is a closing direction of the apparatus, and the rotating shaft of the rotating shaft mechanism rotates about the second direction when the apparatus is closed, the second direction being opposite to the first direction. Illustratively, the first direction is clockwise and the second direction is counterclockwise.

Hereinafter, the spindle mechanism of the present application will be described in detail with reference to fig. 3 to 21.

Fig. 3 is a schematic assembly view of the spindle mechanism provided in the present application. Fig. 4 is a schematic exploded view of the spindle mechanism provided in the present application. Fig. 5 is a schematic block diagram of a stent provided herein. Fig. 6 is a schematic structural view of a rotating shaft provided in the present application. Fig. 7 is a schematic structural view of a swing arm mechanism provided in the present application. Fig. 8 is a schematic cross-sectional view of a spindle mechanism provided herein.

Referring to fig. 3 and 4, the rotating shaft mechanism 100 includes a rotating shaft 110, a bracket 120, and a swing arm mechanism 130, the swing arm mechanism 130 includes a swing arm 131 and a roller 132 accommodated in the swing arm 131, the rotating shaft 110 may be fixedly connected with a first body (e.g., a screen assembly) of the device, and the bracket 120 may be fixedly connected with a second body (e.g., a host assembly) of the device, so as to realize the rotational connection of the first body and the second body, and to realize the opening and closing of the device. The support 120 is respectively connected with the swing arm 131 and the rotating shaft 110, the swing arm 131 is arranged adjacent to and matched with the rotating shaft 110, the roller 132 is rotatably connected with the swing arm 131 and the rotating shaft 110, the rotating shaft 110 can drive the roller 132 to rotate on the swing arm 131, damping force generated by relative rotation between the rotating shaft 110 and the support 120 is used for providing constant torque force, and damping force generated by relative rotation between the rotating shaft 110 and the roller 132 is used for providing variable torque force.

Referring to fig. 3, 4 and 5, the bracket 120 includes a support plate 123 fixedly coupled to the second body of the apparatus, and illustratively, the support plate 123 is provided with a plurality of fastening holes 1231, and a fastener (e.g., a bolt, a screw, or the like) may be inserted through the fastening holes 1231 to fix the support plate 123 to the second body, so as to fixedly couple the bracket 120 and the second body. Referring to fig. 3, 4 and 6, an end of the rotating shaft 110 is provided as a fixing structure 113, which can be inserted into the first body of the device to achieve a fixed connection between the rotating shaft 110 and the first body, and an example, an outer surface of the fixing structure 113 is provided with anti-slip threads to better fix the rotating shaft 110 on the first body.

With continued reference to fig. 5, the bracket 120 includes a shaft sleeve 121, and the shaft sleeve 121 has a through hole for receiving the rotating shaft 110. With continued reference to fig. 6, the rotating shaft 110 includes a constant torque structure 111 corresponding to the sleeve 121, and the sleeve 121 and the constant torque structure 111 cooperate to provide a constant torque. Referring to fig. 3, the shaft sleeve 121 is sleeved on the constant torque structure 111 and serves as a support structure for the rotation of the rotating shaft 110, the constant torque structure 111 and the shaft sleeve 121 are in interference fit, when the device is opened or closed, the rotating shaft 110 rotates relative to the bracket 120, the friction fit between the shaft sleeve 121 and the constant torque structure 111 can provide a constant damping force to provide a constant torque, and when the device is in a use state, the damping force between the shaft sleeve 121 and the constant torque structure 111 can also make the first body in a relatively stable state.

It is understood that the number of the bushings 121 is not limited in this application, and the bracket 120 may include one, two, three, four or more bushings 121. When the bracket 120 includes a plurality of bushings 121, the plurality of bushings 121 are coaxially and spaced apart to facilitate the rotation shaft 110 to penetrate into the plurality of bushings 121, and fig. 5 exemplarily shows two bushings 121. Correspondingly, the number of the constant torsion structures 111 is not limited in any way, and the number of the constant torsion structures 111 is the same as that of the bushings 121.

With continued reference to fig. 5, the stand 120 further includes a swing arm connecting structure 124, the swing arm connecting structure 124 having a receiving cavity opening toward the rotating shaft 110 to receive the swing arm 131 to connect the swing arm 131 to the stand 120. Illustratively, a swing arm connecting structure 124 may be disposed on the supporting plate 123 of the stand 120. For example, the swing arm connecting structure 124 may be disposed between two adjacent bushings 121, and is fixedly connected to the two bushings 121 respectively.

In some embodiments, the swing arm 131 is rotatably connected to the bracket 120, and the swing arm 131 can rotate around the axial direction of the rotating shaft 110 toward the direction close to the rotating shaft 110 or away from the rotating shaft 110. Reference is also made to fig. 5, 7 and 8. Illustratively, two movable holes 1241 (as shown in fig. 5) are disposed on two opposite sides of the swing arm connecting structure 124 along the axial direction of the rotating shaft 110, and a through hole 1311 (as shown in fig. 7) is disposed on the swing arm 131 along the axial direction of the rotating shaft 110, and the movable element 1301 sequentially passes through one movable hole 1241 of the swing arm connecting structure 124, the through hole 1311 of the swing arm 131, and the other movable hole 1241 of the swing arm connecting structure 124 (as shown in fig. 8), so as to achieve the rotational connection between the swing arm 131 and the bracket 120. Illustratively, moveable member 1301 may be a moveable member that resembles a pin.

Referring to fig. 5, 6 and 8 together, a gap 122 (as shown in fig. 5) is formed between two shaft sleeves 121 of the bracket 120, the gap 122 is communicated with a receiving cavity of the swing arm connecting structure 124, the constant torsion structure 111 of the rotating shaft 110 is matched with the shaft sleeves 121, a part of the rotating shaft 110 is exposed in the gap 122, and the part can be matched with the roller 132 to provide variable torsion, and the part is referred to as the variable torsion structure 112 of the rotating shaft 110 for convenience of description. In some embodiments, a torque converter structure 112 (shown in fig. 6) is disposed between the two constant torque structures 111 of the shaft 110, and the torque converter structure 112 cooperates with the roller 132 (shown in fig. 8) to provide a torque converter of the shaft mechanism.

The swing arm mechanism 130 and the torque converting mechanism 112 and related components are described in detail below with reference to fig. 7 to 11 to illustrate the principle and process of providing different torques by the rotating shaft mechanism.

Referring to fig. 7 and 8, the swing arm 131 is provided with a roller bin 1312 opened toward the rotation shaft 110, the roller bin 1312 has a substantially U-shaped configuration, and the rollers 132 are accommodated in the roller bin 1312. The roller 132 is rotatably connected to the roller bin 1312 and the roller 132 is rotatably connected to the shaft 110. When the device is opened, rotation of the shaft 110 in a first direction causes the rollers 132 to rotate toward the top end 1312-1 of the roller bin 1312, and when the device is closed, rotation of the shaft 110 in a second direction causes the rollers 132 to rotate toward the bottom end 1312-2 of the roller bin 1312. It will be appreciated that when the apparatus is in the open state, the rollers 132 are located at the top end 1312-1 of the roller bin 1312, the top end 1312-1 of the roller bin 1312 representing one extreme position of the rollers 132 on the roller bin 1312; when the apparatus is in the closed state, the rollers 132 are located at the bottom end 1312-2 of the roller bin 1312, the bottom end 1312-2 of the roller bin 1312 representing another extreme position of the rollers 132 on the roller bin 1312.

In some embodiments, the inner wall of the roller bin 1312 includes a guide ramp that slopes away from the shaft 110 in the direction of the bottom end 1312-2 of the roller bin 1312 to the top end 1312-1 of the roller bin 1312, which may allow the shaft to have differential torque in the same angular and opposite rotational directions, allowing the device with the shaft mechanism to have a light-weight-on-off characteristic.

Fig. 9 is a schematic structural view of a swing arm provided in the present application, and fig. 10 is a schematic view of a relationship between a roller and a rotating shaft provided in the present application.

Referring also to fig. 9, in the direction of extension of the bottom end 1312-2 of the roller bin 1312 to the top end 1312-1 of the roller bin 1312, the lead ramp 1312A slopes away from the axis of rotation, or alternatively, the bottom end 1312A-2 of the lead ramp 1312A is closer to the axis of rotation 110 than the top end 1312A-1 of the lead ramp 1312A, the bottom end 1312A-2 of the lead ramp 1312A is closer to the bottom end 1312-2 of the roller bin 1312, and the top end 1312A-1 of the lead ramp 1312A is closer to the top end 1312-1 of the roller bin 1312. It is assumed that the dotted line in fig. 9 indicates the position of the axis of the rotation shaft 110, and the distance L2 between the bottom end 1312A-2 of the guide slope 1312A and the axis of the rotation shaft 110 is smaller than the distance L1 between the top end 1312A-1 of the guide slope 1312A and the axis of the rotation shaft 110. Thus, due to the slope design of the guiding slope 1312A, the rotating shaft rotates at the same angle, as the rollers 132 rotate toward the bottom end 1312-2 of the roller bin 1312 relative to the rollers 132 rotating toward the top end 1312-1 of the roller bin 1312, a greater compressive force between the roller 132 and the torque converter structure 112 may be generated to generate a greater damping force, alternatively, at the same angle of rotation, the rollers 132 are positioned at the bottom end 1312-2 of the roller bin 1312 relative to the top end 1312-1 of the roller bin 1312, a greater compressive force is generated between the roller 132 and the torque converter structure 112 to generate a greater damping force, which, in turn, provides a greater torque to the torque converter structure 112, therefore, a larger torque is provided to the rotating shaft 110, so that the rotating shaft 110 has different torques in the same angle and opposite rotating directions, and the device equipped with the rotating shaft mechanism has the characteristics of light opening and heavy closing.

Referring also to fig. 10, for analyzing the fit between the roller 132 and the torque structure 112, assuming the swing arm 131 is stationary, when the roller 132 is located at the top end 1312-1 of the roller bin 1312, the distance between the roller 132 and the torque structure 112 of the shaft 110 is C2 ', C2' may be approximately 0 or negative, when C2 'is negative, the roller 132 interferes with the torque structure 112 of the shaft 110, and C2' may be understood as the amount of interference, and when the roller 132 is located at the bottom end 1312-2 of the roller bin 1312, the roller 132 interferes with the torque structure 112, denoted as C2. It can be seen that, in the case of the stationary swing arm 131, due to the slope design of the guiding slope 1312A, when the roller 132 rotates from the bottom end 1312-2 of the roller bin 1312 to the top end 1312-1 of the roller bin 1312, the distance between the roller 132 and the torque structure 112 (or the rotating shaft 110) is smaller, which means that the pressing force between the roller 132 and the torque structure 112 is smaller, and the damping force therebetween is smaller, and conversely, when the roller 132 rotates from the top end 1312-1 of the roller bin 1312 to the bottom end 1312-2 of the roller bin 1312, the distance between the roller 132 and the torque structure 112 (or the rotating shaft 110) is smaller, and the interference occurs, which means that the pressing force between the roller 132 and the torque structure 112 is larger, and the damping force therebetween is larger.

From the above analysis, it can be seen that due to the ramp design of the guide ramp 1312A, especially when the roller 132 is rotated toward the bottom end 1312-2 of the roller bin 1312, a jam between the roller 132 and the shaft 110 (or torque structure 112) may result. Therefore, in some embodiments, the swing arm 131 and the bracket 120 may be designed to be rotatably connected, and there is a gap between the swing arm 131 and the swing arm connecting structure 124 of the bracket 120 to reserve the displacement of the swing arm 131 in the direction away from the rotating shaft 110. In this embodiment, when the roller 132 rotates toward the bottom end 1312-2 of the roller bin 1312, the amount of interference between the roller 132 and the torque converter 112 may be little or none, and the amount of interference is converted into a displacement of the swing arm 131, and the swing arm 131 can move away from the rotating shaft 110, thereby avoiding jamming between the roller 132 and the rotating shaft 110.

In order to provide sufficient pressing force to the torque converter structure 112 to provide sufficient damping force during the rotation of the swing arm 131, the swing arm mechanism 130 may further include an elastic member to provide pre-pressure to the swing arm 131, so that the elastic member provides pressing force to the roller 132 and the torque converter structure 112 through the swing arm 131, and when the swing arm 131 rotates away from the rotating shaft 110, the roller 132 may be pressed against the torque converter structure 112 through the elastic member to generate a larger pressing force between the roller 132 and the torque converter structure 112 to generate a larger damping force, thereby providing a larger torque to the rotating shaft 110.

With continued reference to fig. 7 and 8, the swing arm mechanism 130 includes an elastic member 133, and one end of the elastic member 133 is fixed on the bracket 120 and the other end abuts on the swing arm 131 to achieve compression and extension of the elastic member 133. Illustratively, one end of the elastic member 133 is fixed to the swing arm connecting structure 124 of the bracket 120. Illustratively, the swing arm 131 is provided with a blind hole 1313 (shown in fig. 7) and a blind hole 1313, the elastic member 133 extends into the blind hole 1313, and the other end of the elastic member 133 abuts against the bottom wall of the blind hole 1313. When the device is opened, the rotating shaft 110 rotates in a first direction, the rollers 132 rotate towards the top end 1312-1 of the roller bin 1312, the swing arm 131 may or may not rotate, and the pressing force (or damping force) between the rollers 132 and the torque structure 112 is small or almost 0, providing a small or almost zero torque force to the torque structure 112. When the apparatus is turned off, the rotating shaft 110 rotates in the second direction, the roller 132 rotates towards the bottom end 1312-2 of the roller bin 1312, the swing arm 131 can rotate away from the rotating shaft 110 under the action of the guiding inclined surface 1312A, the elastic member 133 is compressed, and the elastic force of the elastic member 133 is transmitted to the roller 132, so that a large pressing force (or damping force) is generated between the roller 132 and the torque converter 112, thereby providing a large torque to the torque converter 112.

The elastic member 133 may be, for example, a compression spring, a rubber spring, or the like having elasticity.

In summary, in the embodiment of the rotatable connection between the swing arm 131 and the bracket 120, under the slope design of the guiding slope 1312A, when the roller 132 rotates towards the top end 1312-1 of the roller bin 1312, the swing arm 131 may or may not rotate, the pressing force (or damping force) between the roller 132 and the torque converting structure 112 is smaller or almost 0, so as to provide a smaller or almost zero torque force to the torque converting structure 112, when the roller 132 rotates towards the bottom end 1312-2 of the roller bin 1312, the swing arm 131 may rotate away from the rotating shaft 110, the compressed elastic member 133 transmits the elastic force to the roller 132, so that a larger pressing force (or damping force) may be generated between the roller 132 and the torque converting structure 112, so as to provide a larger torque force to the torque converting structure 112, thereby providing a larger torque force to the rotating shaft 110, so that the rotating shaft 110 has a differential torque force in the same angle and opposite rotating directions, so that the equipment provided with the rotating shaft mechanism has the characteristics of light opening and heavy closing.

It should be noted that the guiding inclined surface 1312A of the roller bin 1312 may be a surface of any shape, and the present application is not limited thereto, as long as it is satisfied that the guiding inclined surface 1312A is inclined away from the rotation shaft 110 in the extending direction from the bottom end 1312-2 of the roller bin 1312 to the top end 1312-1 of the roller bin 1312.

In some embodiments, with continued reference to fig. 9, the guide ramp 1312A is a curved surface. Thus, the cambered guide slope 1312A increases the contact area between the guide slope 1312A and the cylindrical surface of the roller 132, which may increase friction and reduce wear. In other embodiments, referring to fig. 11, fig. 11 is another schematic block diagram of the swing arm provided herein, and the guiding slope 1312A is a straight surface. Thus, the straight guide slope 1312A enables the roller 132 to roll up and down smoothly, and the torque variation of the roller 132 during rolling tends to change in a linear ratio.

It is understood that, with continued reference to fig. 9, the inner wall of the roller bin 1312 may be formed by three wall surfaces, a guide ramp 1312A in the middle and a wall surface connecting both ends of the guide ramp 1312A, the wall surface at the top end 1312-1 of the roller bin 1312 being designated as a top wall surface 1312B, and the wall surface at the bottom end 1312-2 of the roller bin 1312 being designated as a bottom wall surface 1312C, wherein the top wall surface 1312B and the bottom wall surface 1312C may be shaped in any manner, and the present application is not limited thereto.

In some embodiments, with continued reference to fig. 9, the top wall surface 1312B of the roller bin 1312 is an arc surface, which may be referred to as a top arc surface 1312B, and/or the bottom wall surface 1312B of the roller bin 1312 is an arc surface, which may be referred to as a bottom arc surface 1312C. Thus, during rotation of the rollers 132 relative to the roller silos 1312, due to the cambered surface design of the top cambered surfaces 1312B and/or the bottom cambered surfaces 1312C, a better fit between the rollers 132 and the roller silos 1312 may be achieved so that the rollers 132 may achieve better rotation on the roller silos 1312. With continued reference to fig. 9, in the embodiment where the roller bin 1312 has a top arc surface 1312B and a bottom arc surface 1312C, due to the slope design of the guiding slope 1312A, the distance between the center O2 of the bottom arc surface 1312C and the axis of the rotating shaft 110 is smaller than the distance between the center O1 of the top arc surface 1312B and the axis of the rotating shaft 110.

Illustratively, the radii of the top and bottom arcs 1312B and 1312C are the same.

Illustratively, the radius of the top and bottom arcs 1312B and 1312C is greater than or equal to the radius of the rollers 132. In this way, surface contact of the rollers 132 with the roller silos 1312 can be achieved to achieve stable contact between the rollers 132 and the roller silos 1312, and friction between the rollers 132 and the roller silos 1312 can be reduced to reduce wear, improving the life of the spindle mechanism.

In other embodiments, the top wall surface of the roller silos 1312 may be straight or other wall surfaces (not shown), and the bottom wall surface of the roller silos 1312 may also be straight or other wall surfaces (not shown).

In the above embodiment, the rotating shaft mechanism provided by the present application, through the cooperation between the swing arm mechanism 130 and the torque-changing mechanism 112, can enable the rotating shaft to have different torques in the same angle and opposite rotating directions, so that the device configured with the rotating shaft mechanism has the characteristics of light opening and heavy closing. Furthermore, it is desirable that the apparatus has the following characteristics: when the device is just opened, it is desirable that the rotation shaft 110 has a small damping force so that the user can open the device with a small force, but when the device is opened to a certain angle (for example, an angle range of 90 ° to 135 °) in a normal use state, it is desirable that the rotation shaft 110 has a large damping force so as to balance the self-weight of the first body to enhance the stability of the first body, and particularly when the first body has a touch-function screen, it is also desirable to balance a clicking force of clicking on the screen to enhance the stability of the first body when the screen is clicked, and in short, it is desirable to enhance the stability of the device during use.

Based on the above requirement, the rotating shaft mechanism provided by the present application may be disposed on the torque converting structure 112 with a plurality of connected torque converting regions, the plurality of torque converting regions are disposed around the axial direction of the rotating shaft, the surfaces of the plurality of torque converting regions are arc surfaces, and the corresponding angles of the plurality of torque converting regions are the rotating angles of the first body (or the rotating shaft 110) or the angles that can be formed between the first body and the second body when the device is opened, for example, the angles that the plurality of torque converting regions form are 0 ° to 135 °, so that the rotatable angle of the first body (or the rotating shaft 110) or the angle between the first body and the second body is 0 ° to 135 °. The damping force between the plurality of torque zones and the roller 132 is gradually increased in an opening direction (i.e., a first direction) of the device, which may enhance stability of the device when the device is in a use state, wherein the damping force between the roller 132 and the plurality of torque zones may be increased from a first value to a second value, the first value being greater than or equal to 0.

In some embodiments, the plurality of torque zones is a plurality of variable diameter torque zones along the opening direction (i.e., the first direction) of the device, i.e., the plurality of torque zones have progressively increasing radii, such that the damping force between the roller 132 and the plurality of torque zones is progressively increased.

Hereinafter, a plurality of variable diameter torque zones of the torque conversion structure will be described with reference to fig. 12 to 18.

Fig. 12 is a schematic structural view of a torque conversion structure provided in the present application. Referring to fig. 12, exemplary torque converter structure 112 includes three torque converter zones, respectively: a first torque conversion region 1121, a second torque conversion region 1122, and a third torque conversion region 1123, the first torque conversion region 1121 being connected to the second torque conversion region 1122, and the second torque conversion region 1122 being connected to the third torque conversion region 1123. In order of decreasing radius, the radii of the first torque region 1121, the second torque region 1122, and the third torque region 1123 gradually increase, that is, the radius r1 of the first torque region 1121 is smaller than the radius r2 of the second torque region 1122, and the radius r2 of the second torque region 1122 is smaller than the radius r3 of the third torque region. The three torque conversion regions correspond to an angle of rotation of the rotating shaft 110, that is, when the rotating shaft 110 rotates to the first torque conversion region 1121, when the rotating shaft 110 rotates to the second torque conversion region, the rotating shaft 110 rotates to the second torque conversion region 1122, and when the rotating shaft 110 rotates to the third torque conversion region 1123, the rotating shaft 110 rotates to the third torque conversion region 1123.

It is understood that the angle of the third torque conversion region 1123, which is the largest radius, is an angle at which the device can be in a use state, in other words, the device can be in a stable use state at any time during the rotation of the rotation shaft 110 to the third torque conversion region 1123.

When the device is opened, the shaft 110 rotates in a first direction (clockwise as shown in fig. 12) to rotate the roller 132 from the bottom end 1312-2 of the roller bin 1312 to the top end 1312-1 of the roller bin 1312, and the roller 132 is engaged with the first torque zone 1121, the second torque zone 1122, and the third torque zone 1123 in sequence. Since r1 is less than r2 and r2 is less than r3, the engagement of roller 132 with the torque zones may gradually change from intermittent engagement to compressive contact during the opening of the device, or the engagement of roller 132 with the torque zones may always be compressive contact. However, no matter what form of engagement the roller 132 and the plurality of torque conversion zones, the pressing force between the roller 132 and the plurality of torque conversion zones is gradually increased to gradually increase the damping force, so that the rotating shaft 110 can be caused to provide an increasing damping force during the opening of the device. It should be appreciated that if there is a clearance fit between the roller 132 and a certain torque conversion region (e.g., the first torque conversion region 1121), the squeezing force and damping force of the roller 132 and the torque conversion region can be neglected. When the roller 132 is in contact with the third torque conversion zone 1123, the pressing force between the roller 132 and the third torque conversion zone 1123 is maximized and thus the damping force is maximized, so that the apparatus can be in a stable use state when the rotation of the rotation shaft 110 is stopped when the rotation shaft 110 is rotated to an angle corresponding to the third torque conversion zone 1123.

During the closing of the device, the rotation of the shaft 110 in a second direction (counterclockwise as shown in fig. 12) rotates the roller 132 from the top end 1312-1 of the roller bin 1312 to the bottom end 1312-2 of the roller bin 1312, and the roller 132 is engaged with the third torque zone 1123, the second torque zone 1122 and the first torque zone 1121. Since r1 is less than r2 and r2 is less than r3, the engagement of the roller 132 with the torque zones may gradually change from a compressive contact to an intermittent engagement or the engagement of the roller 132 with the torque zones may be a compressive contact at all times during the closing of the device. However, regardless of the form of engagement of the roller 132 with the plurality of torque zones, the squeezing force between the roller 132 and the plurality of torque zones is gradually reduced to gradually reduce the damping force, thereby allowing the rotating shaft 110 to provide a gradually reduced damping force during closure of the device.

It should be noted that due to the design of the guide ramps 1312A of the roller silos 1312, even though the damping force of the rotating shaft 110 is gradually reduced during the closing of the device, in the same torque zone, the damping force of the torque zone is greater during the closing of the device than during the opening of the device, as long as the rollers 132 are in contact with the torque zone. For example, when the rotating shaft 110 rotates to the third torque conversion zone 1123, the roller 132 contacts the third torque conversion zone 1123, and the damping force with which the device is closed is greater than the damping force with which the device is opened.

The torque-changing areas with the variable diameters are arranged on the torque-changing structure, so that the damping force of the equipment in the opening process can be gradually increased, and when the equipment is in a use state, the stability of the first body and the stability of the screen of the first body when the screen is clicked can be enhanced, and the stability of the equipment is enhanced. Furthermore, when the device is closed to a certain angle range (e.g., 0 ° to 15 °), it is desirable that the damping force of the rotating shaft 110 is small or even 0, so as to close the device and reduce the residual torsion. Therefore, in the present application, the torque converter section can be designed appropriately so that the damping force of the torque converter section is small or even 0 when the device is closed to a certain angle.

In embodiments where the torque converter structure includes multiple torque converter zones, the engagement between the torque converter zone of minimum radius and the roller 132 may be made to be an intermittent engagement, which, due to the design of the guide ramps, means that the engagement between the torque converter zone of minimum radius and the roller 132 is an intermittent engagement, whether during opening or closing of the apparatus. Thus, during the opening of the device, the engagement between the roller 132 and the plurality of torque conversion regions gradually changes from an intermittent engagement to a pressing contact, and the damping force of the torque conversion regions gradually increases, and during the closing of the device, the engagement between the roller 132 and the plurality of torque conversion regions gradually changes from a pressing contact to an intermittent engagement, which means that the damping force between the roller 132 and the torque conversion regions is small or even 0 once the engagement between the roller 132 and the torque conversion regions is intermittent, and the device can be easily closed.

In the embodiment where the torque conversion structure includes the first torque conversion region 1121, the second torque conversion region 1122, and the third torque conversion region 1123 described above, the first torque conversion region 1121 is a torque region intermittently engaged with the roller 132, the third torque conversion region 1123 is a torque region in press-contact with the roller 132, and is a torque region where the apparatus can be in a stable use state, and the second torque conversion region 1122 is interposed therebetween.

Taking the starting angle of the first torque conversion zone 1121 with the smallest radius as 0 °, exemplarily, the central angle of the first torque conversion zone is between 0 ° and 15 °, the central angle of the second torque conversion zone is between 15 ° and 90 °, and the central angle of the third torque conversion zone is between 90 ° and 135 °.

It should be understood that although fig. 12 shows three variable-diameter torque zones, the number of torque zones is not limited in the spindle mechanism of the present application, and for example, the spindle mechanism may employ one, two, four, five, etc. different numbers of torque zones.

In addition to meeting the requirement of radius change between the plurality of torque conversion zones, for example, the connection between adjacent torque conversion zones in the plurality of torque conversion zones may be in a smooth transition when the torque conversion structure includes the plurality of torque conversion zones. Here, the smooth transition means that the two torque conversion regions are tangent to each other at the connection point, or it can be understood that the radians at the connection point are the same, so that the roller 132 can smoothly transition from one torque conversion region to the other torque conversion region, and the two torque conversion regions are prevented from being stuck.

In order to facilitate understanding of the engagement between the rotating shaft 110 and the swing arm mechanism 130 during the opening and closing processes of the device, the opening and closing processes of the device will be described below by taking the torque transformation zones corresponding to the three angles as an example in conjunction with fig. 13 to 18. Fig. 13 to 15 are schematic diagrams of the rotating shaft 110 and the swing arm mechanism 130 cooperating with each other during the opening process of the device, and fig. 16 to 18 are schematic diagrams of the rotating shaft 110 and the swing arm mechanism 130 cooperating with each other during the closing process of the device.

Fig. 13 is a schematic view of state 1 in which the rotating shaft 110 is engaged with the swing arm mechanism 130 during the opening process of the device provided by the present application. Referring to fig. 13, the device is opened, during the rotation of the rotating shaft 110 (or the first body) to 0 ° to 15 ° around the first direction, the first torque conversion region 1121 corresponds to the position of the roller 132 of the swing arm mechanism 130, the radius r1 of the first torque conversion region 1121 is minimum, the first torque conversion region 1121 is in intermittent fit with the roller 132, the roller 132 and the swing arm 131 are both stationary, no torque exists between the first torque conversion region 1121 and the roller 132, and the torque F1 between the first torque conversion region 1121 and the roller 132 in this state is set to 0. Therefore, in the process, the torsion of the rotating shaft 110 is provided only by the friction fit between the constant torsion structure 111 and the sleeve 121, and the torsion of the rotating shaft 110 as a whole is minimized, so that the user can open the device with a single hand using a small force.

Fig. 14 is a schematic diagram of state 2 in which the rotating shaft 110 is engaged with the swing arm mechanism 130 during the opening process of the device provided by the present application. Referring to fig. 14, the apparatus is opened continuously, during the rotation of the rotating shaft 110 (or the first body) to 15 ° to 90 ° around the first direction, the second torque conversion zone 1122 corresponds to the position of the roller 132, the radius r2 of the second torque conversion zone 1122 is greater than the radius r1 of the first torque conversion zone 1121, the second torque conversion zone 1122 is in contact with the roller 132, the second torque conversion zone 1122 drives the roller 132 to rotate towards the top end 1312-1 of the roller bin 1312 (the direction of the upward arrow shown in fig. 14), however, the pressing force between the second torque conversion zone 1122 and the roller 132 is very small, and the pressing force F2 between the second torque conversion zone 1122 and the roller 132 is very small and almost negligible. Therefore, in this process, the overall torsion of the rotating shaft 110 is almost the same as that in the state 1, and the overall torsion of the rotating shaft 110 is small, so that the user can continue to open the device with a small force with one hand. It will be appreciated that in this process, the swing arm 131 can be considered stationary because the compressive force between the second torque conversion zone 1122 and the roller 132 is very small, or, if the swing arm 131 is rotating, it is slightly rotating, which can be ignored.

Fig. 15 is a schematic view of state 3 of the device provided by the present application with the rotating shaft 110 engaged with the swing arm mechanism 130 during opening. Referring to fig. 15, the device is opened continuously, during the rotation of the rotating shaft 110 (or the first body) about the first direction to 90 ° to 150 °, the third torque conversion region 1123 corresponds to the position of the roller 132, the radius r3 of the third torque conversion region 1123 is maximum, the roller 132 cannot rotate upwards after rotating to the top end 1312-1 of the roller bin 1312, the third torque conversion region 1123 presses the roller 132 and drives the swing arm 131 to rotate in a direction (the first direction) away from the rotating shaft 110, the elastic member 133 is compressed, the pressing force between the third torque conversion region 1123 and the roller 132 is increased under the action of the elastic member 133, and a larger torque F3 is generated between the third torque conversion region 1123 and the roller 132. Therefore, in the process, the torsion (the sum of the torsion between the roller 132 and the torsion changing structure 112 and the torsion between the sleeve 121 and the constant torsion structure 111) of the whole rotating shaft 110 becomes large, and the stability of the first body and the stability of the screen of the first body when the screen is clicked at the angle can be enhanced by the torsion.

Fig. 16 is a schematic view of state 4 of the device provided herein with the rotating shaft 110 engaged with the swing arm mechanism 130 during closing. To better understand the light on/off characteristics of the device, the schematic diagram of state 3 shown in fig. 15 can be compared. Referring to fig. 16, the apparatus is closed, during the rotation of the rotation shaft 110 (or the first body) to 90 deg. -150 deg. about the second direction, the third torque conversion zone 1123 corresponds to the position of the roller 132, the third torque conversion zone 1123 continues to contact the roller 132, and entrains the rollers 132 to rotate toward the bottom end 1312-2 of the roller bin 1312 (in the direction of the downward arrow in figure 16), due to the slope design of the guiding slope 1312A of the roller bin 1312, the third torque conversion area 1123 continuously presses the roller 1312 and drives the swing arm 131 to continuously rotate in a direction (first direction) away from the rotating shaft 110, in this state, the swing arm 131 rotates by a greater amount than in state 3, the elastic member 133 continues to be compressed, under the action of the elastic member 133, the pressing force between the third torque conversion area 1123 and the roller 132 is larger, and a larger torque force F4 is generated between the third torque conversion area 1123 and the roller 132. Therefore, in the process, the torsion (the sum of the torsion between the roller 132 and the torque-changing structure 112 and the torsion between the sleeve 121 and the constant-torsion structure 111) of the whole rotating shaft 110 is larger, and the stability of the first body and the stability of the screen of the first body when the screen is clicked at the angle can be enhanced by the torsion.

Fig. 17 is a schematic view of state 5 of the device provided herein with the rotating shaft 110 engaged with the swing arm mechanism 130 during closing. To better understand the light on/off characteristics of the device, the schematic diagram of state 2 shown in fig. 14 can be compared. Referring to fig. 17, the apparatus is continuously closed, during the rotation of the rotating shaft 110 (or the first body) to 15 ° to 90 ° around the second direction, the second torque conversion zone 1122 corresponds to the position of the roller 132, and since the radius r2 of the second torque conversion zone 1122 is smaller than the radius r3 of the third torque conversion zone 1123, compared to the state 4, the swing arm 131 rotates toward the direction (the second direction) close to the rotating shaft 110, the distance between the swing arm 131 and the rotating shaft 110 becomes smaller, the compression amount of the elastic member 133 becomes smaller, the pressing force between the second torque conversion zone 1122 and the roller 132 is smaller than that of the state 4, and a smaller torque F5 is generated between the second torque conversion zone 1122 and the roller 132, but due to the slope design of the guide slope 1312A, the torque F5 is still larger than the torque F2 of the state 2. Therefore, in the process, the torsion of the whole rotating shaft 110 (the sum of the torsion between the roller 132 and the torsion changing structure 112 and the torsion between the sleeve 121 and the constant torsion structure 111) is reduced and still larger than the torsion of the whole rotating shaft 110 in the state 2, so that the first body can be prevented from being automatically closed under the action of the self gravity to cause the damage of the equipment.

Fig. 18 is a schematic view of the state 6 where the rotating shaft 110 is engaged with the swing arm mechanism 130 during the closing process of the device provided by the present application. The schematic of state 1 shown in fig. 13 can be compared. Referring to fig. 18, the apparatus is continuously closed, and during the rotation of the rotating shaft 110 (or the first body) to 0 ° to 15 ° around the second direction, the first torque conversion region 1121 corresponds to the position of the roller 132, and since the radius r1 of the first torque conversion region 1121 is minimum, the first torque conversion region 1121 is in clearance fit with the roller 132, the roller 132 and the swing arm 131 are both stationary, there is no torque between the first torque conversion region 1121 and the roller 132, and the torque F6 between the first torque conversion region 1121 and the roller 132 in this state is equal to 0. Therefore, in the process, the torsion of the rotating shaft 110 is provided only by the friction fit between the constant torsion structure 111 and the sleeve 121, and the torsion of the rotating shaft 110 is minimized as a whole, which is beneficial for closing the device and reducing the residual torsion.

In the above 6 states, when the device is opened, the torque force of the swing arm mechanism 130 cooperating with the torque force changing structure 112 changes to: f1 < F2 < F3, the torque force of the swing arm mechanism 130 cooperating with the torque changing structure 112 when the device is closed changes to: f4 > F5 > F6, and F4 > F3, F5 > F2. In conjunction with the light-off and heavy-off characteristics of the apparatus described above, it can be further seen that at the same rotational angle (e.g., the angle corresponding to the second torque zone 1122 or the third torque zone 1123), due to the design of the lead ramp 1312A of the roller bin 1312, different compressive forces can be generated between the roller 132 and the torque structure 112 to generate different torsional forces when the roller 132 is located at the top end 1312-1 and the bottom end 1312-2 of the roller bin 1312, a small compressive force between the roller 132 and the torque structure 112 when the roller 132 is located at the top end 1312-1 of the roller bin 1312 results in a small torsional force, and a large compressive force between the roller 132 and the torque structure 112 when the roller 132 is located at the bottom end 1312-2 of the roller bin 1312 results in a large torsional force.

In summary, the present application provides a rotating shaft mechanism, which can provide a constant torque force by the cooperation of the shaft sleeve 121 and the constant torque structure 111 of the rotating shaft 10, and provide a variable torque force by the cooperation of the swing arm mechanism 130 and the torque varying structure 112 of the rotating shaft 110, wherein the variable torque force can generate different torque forces according to the opening or closing of the device. The varying torque force may vary in two ways: on one hand, when the device is opened, a smaller torsion force is provided, so that a user can open the device with a smaller force by one hand, and when the device is closed, a larger torsion force is provided, so that the first body of the device is not automatically covered on the second body due to self gravity to cause damage to the device, and therefore the characteristic of light opening and heavy closing of the device is realized; on the other hand, in the structure in which the torque-varying structure 112 includes a plurality of torque-varying zones, the damping force of the torque-varying zones gradually increases to cause the torque to gradually increase during the opening of the device, and the stability of the first body and the stability of the screen of the first body when the screen is clicked are enhanced when the device is in a use state, so that the device can be in a stable use state.

Fig. 12 to 18 just illustrate the change of the torque between the roller 132 and the torque converting regions by changing the radius of the torque converting regions, but it should be understood that the rotating shaft mechanism provided by the present application is not limited to the above-described one, and other manners may be adopted. As can be seen from the formula of the damping force, the magnitude of the damping force is related to the damping coefficient in addition to the extrusion force. Thus, the multiple torque zones provided herein can also vary the damping force (i.e., torque) of the roller 132 when engaged with different torque zones by varying the damping coefficients of the different torque zones. Illustratively, the coefficient of friction between the plurality of torque zones and the roller 132 increases gradually in the opening direction (i.e., the first direction) of the device. When the roller 132 is in contact with the plurality of torque zones, the torque between the roller 132 and the plurality of torque zones may also change due to the change in the coefficient of friction.

In the rotating shaft mechanism of the present application, the constant torsion structure 111 and the variable torsion structure 112 of the rotating shaft 110 can be flexibly arranged to meet practical requirements.

In some embodiments, the rotating shaft 110 includes a plurality of constant torsion structures 111 and a plurality of variable torsion structures 112 disposed at intervals in an axial direction of the rotating shaft 110. The present application does not limit the position between the constant torsion structure 111 and the variable torsion structure 112.

Illustratively, the torque converter structure 112 may be disposed between any adjacent two of the constant torque structures 111. Therefore, the two ends of the rotating shaft 110 can be stressed in a balanced manner as far as possible, and the rotating shaft mechanism has better stability.

For example, referring to fig. 6, the rotation shaft 110 includes two constant torsion structures 111 and one torque transformation structure 112, and the torque transformation structure 112 is disposed between the two constant torsion structures 111.

In some embodiments, the radius of the torque structures 112 is less than or equal to the radius of the constant torque structures. Thus, in embodiments where the torque converter structure 112 is disposed between the constant torque radii 111, assembly of the shaft 110 with the bracket 120 is facilitated.

In the embodiment where the swing arm 131 is rotatably connected to the bracket 120, due to the slope design of the guiding slope 1312A of the roller bin 1312, the roller 132 is rotated on the roller bin 1312 by the rotation of the rotating shaft 110, so that the swing arm 131 can rotate toward the rotating shaft 110 or away from the rotating shaft 110, and in order to limit the displacement of the swing arm 131 toward the rotating shaft 110, a swing arm limiting structure may be disposed on the bracket.

Fig. 19 is another schematic assembly view of the spindle mechanism provided in the application. FIG. 20 is another exemplary cross-sectional view of a spindle mechanism provided herein. Referring to fig. 19 and 20, a swing arm limiting structure 125 is disposed on the bracket 120 and located on a side of the swing arm 131 close to the rotating shaft 110, and the swing arm limiting structure 125 corresponds to the position of the swing arm 131. Illustratively, the end of the shaft sleeve 121 of the bracket 120 is provided with a swing arm limiting structure 125. When the swing arm 131 moves to a certain position in a direction close to the rotating shaft 110, the swing arm 131 can abut against the swing arm limiting structure 125, so that the swing arm limiting structure 125 limits the displacement of the swing arm 131, and the situation that the swing arm 131 is excessively rotated to cause the shell clamping between the swing arm 131 and the rotating shaft 110 is avoided. In addition, in the structure in which the torque converter structure 112 includes a plurality of torque converter regions, when the torque converter region with the smallest radius (for example, the first torque converter region) is intermittently engaged with the roller 132, the position of the swing arm 131 is limited by the swing arm limiting structure 125 under the action of the elastic member 133, and the intermittent engagement between the roller 132 and the torque converter region can be preferably achieved.

It can be understood that the number of the swing arm limiting structures 125 is not limited in any way, and the number of the swing arm limiting structures 125 may be one, two, three or more. Illustratively, two swing arm limiting structures 125 are respectively arranged at opposite ends of the two shaft sleeves 121 of the bracket 120.

As mentioned above, the swing arm 131 is rotatably connected to the bracket 120, and the swing arm 131 can rotate around the bracket 120. In other embodiments, the swing arm 131 and the bracket 120 may be fixedly connected, and in this embodiment, the swing arm 131 may not be provided with the elastic member 133 as shown in fig. 7 and 8.

In some embodiments, the swing arm 131 can be made of an elastic material, and the swing arm 131 has elasticity and can deform, due to the design of the guiding inclined surface 1312A, when the rollers 132 are located at the bottom end 1312-2 and the top end 1312-1 of the roller bin 1312, under the same rotation angle, the swing arm 131 can have different deformations to provide different pressing forces to the variable torsion structure 112 to provide different damping forces, so as to provide different torsion forces.

In other embodiments, the rollers 132 may be made of an elastic material, and the rollers 132 have elasticity, and due to the design of the guiding inclined plane 1312A, the rollers 132 may have different deformations when the rollers 132 are located at the bottom end 1312-2 and the top end 1312-1 of the roller bin 1312 at the same rotation angle, so as to provide different pressing forces to the torsion-variable structure 112 to provide different damping forces for providing different torsion forces.

When the rotating shaft mechanism of the present application is used, the rotating shaft 110 and the bracket 120 rotate relatively to realize the relative rotation between the first body and the second body. When the device is used, the maximum rotating angle of the first body and the second body needs to be limited so as to avoid that the rotating angle of the first body is too large and the devices in the device are damaged. Therefore, with continued reference to fig. 5 and 6, the bracket 120 is provided with a notch 126, and the rotating shaft 110 is provided with a stop structure 114 matching with the notch 126, wherein the stop structure 114 can rotate within the opening range of the notch 126. Referring to fig. 21, in use, the rotation shaft 110 rotates a certain angle, and the stopper 114 is pressed against the sidewall 1261 of the notch 126 to define the rotation angle of the rotation shaft 110, and thus the opening angle of the electronic device is defined.

The application also provides a device with opening and closing performance, and the device can be a notebook computer exemplarily. The description of the device can refer to fig. 1 and 2 to describe the notebook computer, and is not repeated. The screen module 200 shown in fig. 1 and 2 is an example of a first body fixedly connected to the rotating shaft 110 of the rotating shaft mechanism 100, and correspondingly, the host module 300 shown in fig. 1 and 2 is an example of a second body fixedly connected to the bracket 120 of the rotating shaft mechanism 100.

It should be understood that the structures of the various components and the connection relationships among the components in the apparatuses shown in fig. 1 to 21 are only schematic illustrations, and any alternative structures of the components that function the same as each component are within the scope of the embodiments of the present application.

It should be understood that in the embodiments of the present application, the terms "connected," "fixedly connected," "rotatably connected," and "in contact" are to be construed broadly unless otherwise specifically stated or limited. Specific meanings of the above-mentioned various terms in the embodiments of the present application can be understood by those skilled in the art according to specific situations.

For example, the "connection" may be various connection manners such as fixed connection, rotational connection, flexible connection, movable connection, integral molding, electrical connection, and the like; may be directly connected to one another or may be indirectly connected to one another through intervening media, or may be interconnected within two elements or in an interactive relationship between the two elements.

By way of example, with respect to "fixedly attached," it is possible that one element may be directly or indirectly fixedly attached to another element; the fixed connection may include mechanical connection, welding, bonding, and the like, wherein the mechanical connection may include riveting, bolting, screwing, keying, snapping, latching, plugging, and the like, and the bonding may include adhesive bonding, solvent bonding, and the like.

For example, the explanation of "contact" may be that one element is in direct contact or indirect contact with another element, and furthermore, the contact between two elements described in the embodiments of the present application may be understood as a contact within an allowable range of mounting error, and there may be a small gap due to the mounting error.

It should also be understood that "parallel" or "perpendicular" as described in the embodiments of the present application may be understood as "approximately parallel" or "approximately perpendicular".

It will be further understood that the terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings to facilitate the description of the application and to simplify the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present invention.

It should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. The features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

In the embodiments of the present application, "at least one" means one or more, "a plurality" means two or more. "at least a portion of an element" means a part or all of an element. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a alone, both A and B, and B alone, where A, B may be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A hinge mechanism for connecting a first body and a second body of a device, comprising: the device comprises a bracket, a swing arm, a roller and a rotating shaft;

2. The spindle mechanism according to claim 1, wherein the swing arm is rotatably connected to the bracket, and the swing arm is rotatable around an axial direction of the spindle; and the number of the first and second groups,

3. The spindle mechanism according to claim 1 or 2, wherein the variable torque structure includes a plurality of connected variable torque zones around an axial direction of the spindle, and a damping force between the roller and the plurality of variable torque zones becomes gradually larger in the first direction.

4. The spindle mechanism according to claim 3, wherein the radius of the plurality of torque converter zones increases gradually along the first direction.

5. The spindle mechanism according to claim 3 or 4, wherein the torque zone having the smallest radius among the plurality of torque zones is in clearance fit with the roller.

6. The rotating shaft mechanism according to any one of claims 3 to 5, wherein the plurality of torque conversion regions comprises three torque conversion regions arranged in a descending order of radius, a central angle of a first torque conversion region is between 0 degrees and 15 degrees, a central angle of a second torque conversion region is between 15 degrees and 90 degrees, and a central angle of a third torque conversion region is between 90 degrees and 135 degrees.

7. The rotating shaft mechanism according to any one of claims 1 to 6, wherein a swing arm limiting structure is disposed on the bracket on a side of the swing arm close to the rotating shaft to limit a displacement amount of the swing arm rotating towards the rotating shaft.

8. The rotating shaft mechanism according to claim 7, wherein the bracket is provided with a shaft sleeve sleeved on the constant torque structure, and the swing arm limiting structure is arranged at an end of the shaft sleeve.

9. A spindle mechanism according to any one of claims 1 to 8, characterised in that the guide ramp is an arc.

10. A spindle mechanism according to any one of claims 1 to 9, characterized in that the inner wall of the roller magazine further comprises a top arc and a bottom arc connecting the guiding ramps.

11. The spindle mechanism according to claim 10, wherein the radii of the top cambered surface and the bottom cambered surface are the same.

12. A spindle mechanism according to claim 10 or 11, characterised in that the radius of the top cambered surface and the bottom cambered surface is greater than the radius of the roller.

13. The spindle mechanism according to any one of claims 1 to 12, wherein a radius of the variable torsion structure is smaller than or equal to a radius of the constant torsion structure.

14. An apparatus with opening and closing performance, characterized by comprising a first body, a second body and a rotating shaft mechanism according to any one of claims 1 to 13, wherein the first body is connected with a rotating shaft of the rotating shaft mechanism, and the second body is connected with a bracket of the rotating shaft mechanism.

15. The apparatus of claim 14, wherein the apparatus is a notebook computer, the first body is a screen assembly, and the second body is a host assembly.