CN216895331U - Rotating shaft assembly and electronic equipment - Google Patents

Abstract

The embodiment of the application discloses pivot subassembly and electronic equipment, the pivot subassembly can be applied to including two relative pivoted rotating parts and need carry out the part of angle modulation, can be like the cell-phone, notebook computer, electronic equipment such as panel computer and display screen, also can be the push-and-pull door, folder etc, two rotating parts can realize relative rotation through the pivot subassembly, the pivot subassembly is provided with the reducing section through pivot and/or sleeve, can rotate relatively and can follow axial relative movement between pivot and the sleeve, make the friction torque of pivot subassembly be non-linear change along with the change of turned angle, this friction torque can design according to the change condition of gravity torque, in order to solve the relatively poor problem of user experience.

Description

Rotating shaft assembly and electronic equipment

Technical Field

The application relates to the technical field of electronic equipment, in particular to a rotating shaft assembly and electronic equipment.

Background

Among the electronic equipment such as notebook computer, display screen, include two rotation portions usually and locate the pivot subassembly between these two rotation portions, two rotation portions can rotate relatively to realize the angle modulation between two rotation portions, but in accommodation process, take place the pivoted rotation portion because the produced gravity moment of self gravity is along with its and the change of the contained angle between the horizontal plane and change, but the friction moment of rotating assembly keeps invariable, so leads to user experience relatively poor.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a rotating shaft assembly and electronic equipment, and the problem that user experience is poor when the angle between two rotating parts is adjusted is solved.

A first aspect of an embodiment of the present application provides a rotating shaft assembly, including a first mounting bracket and a second mounting bracket; the first mounting frame is connected with a rotating shaft; the second mounting frame is connected with a sleeve, the sleeve is sleeved outside the rotating shaft, and a gap is further arranged on the side wall of the sleeve in a penetrating mode along the axial direction of the sleeve; at least one of telescopic inner wall and the outer wall of pivot is equipped with the reducing section, and the diameter of reducing section is along its axial gradual change, and when two mounting brackets rotated relatively, can drive the sleeve and rotate and follow axial displacement for the pivot to change the frictional force between sleeve and the pivot.

Two rotating parts are when relative rotation, can drive two mounting brackets and take place relative rotation, change along with rotating part turned angle, the gravity moment of rotating part is non-linear variation, consequently, with the produced friction moment of pivot subassembly at the rotation in-process, also set up to be non-linear variation along with the change of turned angle, and this friction moment can design according to the change of the gravity moment of rotating part, make friction moment not less than gravity moment, guarantee that two rotating parts can both guarantee stability under arbitrary angular state.

And, the difference between friction torque and the gravity moment is not more than the default, that is to say, diminishes along with gravity moment, friction torque also diminishes, gravity moment grow friction torque also grow, wherein, gravity moment is its absolute value, so set up, can be when guaranteeing the stability in rotation of two rotating parts, according to gravity moment and default in order to restrict friction torque, make the user at the in-process of the angle of two rotating parts of manual regulation, can be laborsaving, thereby promote user experience. Alternatively, the sum of the friction torque and the gravity torque can be set to be a constant value, that is, the required resistance for the user to adjust is constant during the change of the angle between the two mounting frames, so that the user experience can be improved.

Based on the first aspect, an embodiment of the present application further provides a first implementation manner of the first aspect:

the first mounting frame is further connected with a first matching piece, the first matching piece is coaxial with the rotating shaft, the second mounting frame is further connected with a second matching piece, the second matching piece is coaxial with the sleeve, and the first matching piece and the second matching piece are in threaded fit; the shaft is movable relative to the first mounting frame in its axial direction, or the sleeve is movable relative to the second mounting frame in its axial direction. So said arrangement, the structure is comparatively simple, and can realize that relative rotation takes place between pivot and the sleeve, can also take place relative movement along the axial

Based on the first implementation manner of the first aspect, the present application provides a second implementation manner of the first aspect:

the outer wall of pivot is equipped with screw thread portion, and screw thread portion forms first fitting piece, and the second fitting piece is the nut. So set up, set up first fitting piece and pivot into the integral type structure, can simplify overall structure to can effectively guarantee the axiality, set up the second fitting piece into the nut, can simplify processing technology, reduce cost.

Based on the first implementation manner or the second implementation manner of the first aspect, an embodiment of the present application further provides a third implementation manner of the first aspect:

a connecting part is arranged between the rotating shaft and the first mounting frame, the connecting part is fixed with the rotating shaft, the first mounting frame is provided with a slide way along the axial direction of the rotating shaft, and the connecting part is provided with a sliding part capable of sliding along the slide way;

or, be equipped with connecting portion between sleeve and the second mounting bracket, connecting portion are fixed with the sleeve, and the second mounting bracket is equipped with the slide along telescopic axial, and connecting portion are equipped with and can follow the gliding slider of slide.

The connecting part can be arranged in a space conveniently while the rotating shaft slides axially relative to the first mounting frame or the sleeve slides axially relative to the second mounting frame.

Based on the third implementation manner of the first aspect, the present application provides an example of the fourth implementation manner of the first aspect:

the slide is the spout, and the cross-section of spout is C type structure, and the slider is located the spout, and the width of slider is greater than the opening width of spout. So can restrict the slider and slide in the spout, and can not break away from with the spout, guarantee the stability of sliding.

Based on the first aspect and any one of the first to fourth implementation manners of the first aspect, this application example further provides a fifth implementation manner of the first aspect:

the number of the sleeves is two, the two sleeves are fixed with the second mounting rack respectively, and the notches of the two sleeves are arranged on two sides of the second mounting rack respectively. So set up, can balance the atress condition of two sleeves, ensure stability, reduce the deformation and can improve the life of this pivot subassembly.

Based on the fifth implementation manner of the first aspect, the present application provides a sixth implementation manner of the first aspect:

the two sleeves are both positioned on the same side of the second fitting piece. So set up, can simplify the overall structure of pivot, simplify processing technology.

Based on the first aspect and any one of the first to sixth implementation manners of the first aspect, embodiments of the present application further provide a seventh implementation manner of the first aspect:

the rotating shaft is provided with a matching section, the diameter of the matching section is gradually increased from the middle part to two sides along the axial direction of the matching section, and the matching section forms a reducing section; when the sleeve is provided with the reducing section, the diameter of the reducing section is gradually reduced from the middle part to two sides along the axial direction of the reducing section. So set up for the produced friction torque of pivot subassembly can change along with the change of the gravity moment of rotation portion, when guaranteeing rotational stability, reaches laborsaving purpose.

Based on the first aspect and any one of the first to sixth implementation manners of the first aspect, embodiments of the present application further provide an eighth implementation manner of the first aspect:

the diameter of the matching section of the rotating shaft is gradually increased from one end to the other end along the axial direction of the rotating shaft, and a reducing section is formed; when the sleeve is provided with the reducing section, the diameter of the reducing section is gradually reduced from one end to the other end along the axial direction of the reducing section. So set up for the produced friction torque of pivot subassembly can change along with the change of the gravity moment of rotation portion, when guaranteeing rotational stability, can also make friction torque and gravity moment sum invariable, thereby promote user experience.

A second aspect of the embodiments of the present application provides an electronic device, including two rotating portions and a rotating shaft assembly as in any one of the first aspect, the first to eighth implementations of the first aspect; two mounting brackets of pivot subassembly are fixed with two rotation portions respectively, and when the contained angle between two rotation portions was in predetermineeing the angle range, the friction torque of pivot subassembly was not less than the gravity moment of rotation portion.

The technical effect of the electronic device is similar to that of the rotating shaft assembly, and is not repeated herein for saving space.

Based on the second aspect, the embodiments of the present application further provide a first implementation manner of the second aspect:

the quantity of pivot subassembly is two sets of to the interval sets up, and the pivot of two sets of pivot subassemblies is coaxial. So set up for the rotational stability between two rotation portions is better.

Based on the second aspect or the first implementation manner of the second aspect, the present application provides a second implementation manner of the second aspect:

the electronic equipment is a notebook computer, and the keyboard side and the display side of the notebook computer form two rotating parts; the preset angle range is 20-180 degrees, and when the included angle between the two rotating parts is 0-20 degrees, the gravity moment is larger than the friction moment. By the arrangement, when the included angle between the display side and the keyboard side of the notebook computer is 0-20 degrees, no external force is needed, the display side can be attached to the keyboard side under the action of self gravity, and the experience feeling is better.

Based on the second implementation manner of the second aspect, the present application provides a third implementation manner of the second aspect:

when the included angle between the two rotating parts is 100-120 degrees, the friction torque of the rotating shaft assembly is larger than the gravity torque of the rotating parts. With the arrangement, the display side has the anti-push effect when rotating to 100-120 degrees, and the experience feeling is better for the notebook computer with the touch screen function.

Drawings

Fig. 1 and fig. 2 are schematic structural diagrams of an electronic device provided in an embodiment of the present application, where the electronic device is a notebook computer;

fig. 3 is a schematic structural diagram of an electronic device provided in an embodiment of the present application, where the electronic device is a display screen;

FIG. 4 is a diagram showing the change of the gravity moment and the friction moment of the second rotating part during the rotation, wherein the rotating shaft is horizontally arranged and the first rotating part is fixed;

FIG. 5 is a graph showing the change of the gravity moment and the friction moment of the second rotating part during the rotation, wherein the rotating shaft is horizontally arranged, the first rotating part is fixed, and the sum of the gravity moment and the friction moment is constant;

FIG. 6 is a schematic structural view of the spindle assembly;

FIG. 7 is a side view of FIG. 6;

FIG. 8 is a schematic view of the second mount, sleeve and nut;

FIG. 9 is a schematic structural view of the rotary shaft, in which the diameter of the fitting section is gradually increased from the middle portion to both sides in the axial direction thereof;

FIG. 10 is a schematic structural view of the rotary shaft, in which the diameter of the fitting section becomes gradually larger from one end to the other end in the axial direction thereof;

fig. 11 is a structural view of the first mounting bracket and the connecting portion.

In the accompanying fig. 1-11, the reference numerals are illustrated as follows:

100-a spindle assembly; 200-a first rotating part; 300-a second rotating part;

1-a first mounting frame; 2-a second mounting frame; 3-rotating shaft, 31-matching section, 32-threaded part and 33-fixing plate; 4-sleeve, 41-gap; 5-a nut; 6-connecting part, 61-sliding part; 7-a chute; 8-fixing hole.

Detailed Description

The embodiment of the application provides a rotating shaft component and electronic equipment, wherein the electronic equipment includes but is not limited to a mobile phone, a notebook computer, a tablet computer, a display screen, a notebook computer accessory, a tablet computer accessory, a mobile phone accessory and the like, and includes a first rotating part and a second rotating part, and the relative rotation of the first rotating part and the second rotating part can realize the angle adjustment of the components, the rotating shaft component 100 can be applied to the electronic equipment, of course, the rotating shaft component 100 is not limited to being applied to the electronic equipment, and can also be applied to scenes such as sliding doors, folder rotating shafts, accessory rotating shafts and the like.

The electronic device includes a rotating shaft assembly 100 and two rotating portions, and for convenience of description, the two rotating portions are a first rotating portion 200 and a second rotating portion 300 respectively, wherein the rotating shaft assembly 100 is disposed between the first rotating portion 200 and the second rotating portion 300, and the two rotating portions can rotate relatively through the rotating shaft assembly 100, so that angle adjustment between the two rotating portions is realized.

When the electronic device is a notebook computer, as shown in fig. 1 and 2, a first rotating part 200 is formed on a keyboard side (a side where the keyboard is provided), a second rotating part 300 is formed on a display side (a side where the display screen is provided), the rotating shaft assembly 100 is connected between the display side and the keyboard side, and the display side can rotate relative to the keyboard side through the rotating shaft assembly 100 to adjust an opening angle of the display side, thereby realizing the unfolding and folding of the notebook computer. When the electronic device is a display screen, as shown in fig. 3, a base of the display screen corresponds to the first rotating portion 200, a screen corresponds to the second rotating portion 300, a rotating shaft assembly 100 is disposed between the screen and the base, and the screen can rotate relative to the base through the rotating assembly 100 to achieve angle adjustment of the screen.

Specifically, the rotating shaft assembly 100 comprises a first mounting frame 1 and a second mounting frame 2, wherein the first mounting frame 1 is connected with a rotating shaft 3, the second mounting frame 2 is connected with a sleeve 4, and the sleeve 4 is sleeved outside the rotating shaft 3 and can rotate relative to the rotating shaft 3, so that relative rotation between the two mounting frames is realized. Among two mounting brackets, a mounting bracket is fixed with first rotation portion 200, and another mounting bracket is fixed with second rotation portion 300, and two rotation portions can rotate relatively to drive relative rotation between two mounting brackets, thereby realize angle modulation. Specifically, the first rotating portion 200 may be fixed to the first mounting frame 1, and the second rotating portion 300 may be fixed to the second mounting frame 2, or the first rotating portion 200 may be fixed to the second mounting frame 2, and the second rotating portion 300 may be fixed to the first mounting frame 1.

When the angle between the two rotating portions is adjusted, one rotating portion may be fixed, and the user manually acts on the other rotating portion to rotate the other rotating portion around the rotating shaft, for example, the first rotating portion 200 is fixed, and the user manually acts on the second rotating portion 300, the second rotating portion 300 rotates around the rotating shaft 3 relative to the first rotating portion 200, in the adjusting process, the gravity action of the second rotating portion 300 itself can generate the gravity moment, and the friction force between the sleeve 4 and the rotating shaft 3 can generate the friction moment, therefore, in the process of rotating the second rotating portion 300, the total moment to be overcome by the user is the sum of the gravity moment and the friction moment.

In the process of relative rotation of the two rotating parts, the gravity torque changes nonlinearly with the change of the rotation angle of the rotating parts, and in order to improve the comfort of the user, in this embodiment, the friction torque generated by the rotating shaft assembly 100 in the rotation process is also set to change nonlinearly with the change of the rotation angle, and the friction torque can be designed according to the change of the gravity torque of the rotating parts, so that the friction torque is not less than the gravity torque, and the stability of the two rotating parts can be ensured in any angle state, meanwhile, the difference between the friction torque and the gravity torque does not exceed a preset value, specifically, as the gravity torque becomes smaller, the friction torque becomes smaller, and the gravity torque becomes larger, wherein the gravity torque refers to the absolute value thereof, that is, according to the gravity torque and the preset value, the friction torque is limited, make the user at the in-process of the angle of two rotation portions of manual regulation, when guaranteeing to adjust stability, can also be laborsaving to promote user experience.

Or, in the process that the two rotating parts rotate relatively, friction torque can be set according to the gravity torque of the rotating parts, so that the sum of the friction torque and the gravity torque is kept in a constant preset range, at the moment, the gravity torque can be positive or negative, and therefore, in the process that the user manually adjusts the angles of the two rotating parts, the resistance to be overcome is constant, and the user experience is improved.

In this embodiment, the preset value and the preset range are not specifically limited, and may be set according to actual situations.

In this embodiment, the number of the sleeves 4 and the number of the rotating shafts 3 in each rotating shaft assembly 100 are not limited, and the friction torque of the rotating shaft assembly 100 refers to the sum of the friction torques generated by the sleeves 4 and the rotating shafts 3. As shown in fig. 1, only one set of the rotation shaft assembly 100 may be disposed between the first rotation part 200 and the second rotation part 300, in this case, the rotation shaft assembly 100 is disposed at a middle position between the first rotation part 200 and the second rotation part 300 along the length direction to ensure rotation stability, the friction torque of the rotation shaft assembly 100 is not less than the gravity torque of the rotation part, and the difference between the friction torque and the gravity torque does not exceed a preset value, or the sum of the friction torque and the gravity torque is constant. Or, two sets of rotating shaft assemblies 100 (as shown in fig. 2) or even more sets of rotating shaft assemblies 100 may be disposed between the first rotating portion 200 and the second rotating portion 300, at this time, the rotating shafts 3 of the rotating shaft assemblies 100 are coaxially disposed, and at the same time, the rotating shaft assemblies 100 are disposed at intervals to ensure the rotating stability, and the difference between the sum of the friction torques of all the rotating shaft assemblies 100 and the gravity torque of the rotating portion 300 does not exceed a preset value, or the sum of the friction torques and the gravity torque of all the rotating shaft assemblies 100 is constant. Wherein, gravity moment means the moment that the gravity of the rotation portion that takes place to rotate produced, if the user acted on two rotation portions simultaneously and takes place to rotate, then gravity moment means the sum of the gravity moment of two rotation portions.

In this embodiment, as shown in fig. 6 and 8, a notch 41 is formed in the sidewall of the sleeve 4 along the axial direction, and the notch 41 is disposed to avoid the problem of severe attenuation of the torque force when the rotating shaft 3 and the sleeve 4 rotate relatively. As shown in fig. 9, the rotating shaft 3 is provided with a fitting section 31, the diameter of the fitting section 31 is gradually changed along the axial direction thereof, and the above-mentioned diameter-changing section is formed, the sleeve 4 is sleeved outside the fitting section 31, and the sleeve 4 can rotate relative to the rotating shaft 3 and move along the axial direction of the rotating shaft 3, that is, relative rotation and relative linear movement can exist between the sleeve 4 and the rotating shaft 3.

Specifically, the first mounting bracket 1 is connected with a first fitting member (a threaded portion 32 as shown in fig. 6) which is coaxially disposed with the rotating shaft 3, the second mounting bracket 2 is connected with a second fitting member which is coaxially disposed with the sleeve 4, the first fitting member can be threadedly engaged with the second fitting member, and at the same time, the rotating shaft 3 can be axially moved with respect to the first mounting bracket 1, or the sleeve 4 can be axially moved with respect to the second mounting bracket 2. When the two mounting brackets rotate relatively, the structure is simpler through the threaded fit of the two fitting pieces (the first fitting piece and the second fitting piece), and the relative rotation between the rotating shaft 3 and the sleeve 4 can be realized, and meanwhile, the relative movement can also be realized along the axial direction.

Therefore, when relative rotation occurs between the two mounting frames, the sleeve 4 can be driven to rotate relative to the rotating shaft 3 and move along the axial direction, and the sleeve 4 is sleeved outside the matching section 31 of the rotating shaft 3, so that when the sleeve 4 moves along the axial direction relative to the rotating shaft 3, the diameter of the matching position of the rotating shaft 3 and the sleeve 4 can be changed, the opening degree of the notch 41 of the sleeve 4 is changed, the friction force between the sleeve 4 and the rotating shaft 3 is changed, and further the friction torque is changed.

It will be understood that when the sleeve 4 moves axially relative to the shaft 3 to the side with the larger diameter, the sleeve 4 is expanded due to the larger diameter, the gap 41 is larger, and the friction between the sleeve 4 and the shaft 3 is also increased, and the corresponding friction torque is increased, whereas when the sleeve 4 moves axially in the opposite direction relative to the shaft 3, i.e., toward the side with the smaller diameter, the sleeve 4 is gradually restored in shape due to the smaller diameter, the gap 41 is smaller, and the friction between the sleeve 4 and the shaft 3 is also reduced, and the corresponding friction torque is reduced.

In the pivot subassembly 100 that this embodiment provided, the diameter size through changing pivot 3 and the cooperation of sleeve 4 department in the relative pivoted in-process of two rotating parts changes the frictional force between sleeve 4 and the pivot 3, and then changes the produced friction torque of this pivot subassembly 100 to promote user experience. Specifically, the size of the fitting section 31 and the size of the sleeve 4 may be set according to the change of the gravity moment of the two rotating portions in the rotating process.

For example, the rotation shaft 3 is horizontally disposed, the first rotation part 200 is fixed, and the user acts on the second rotation part 300 to rotate the second rotation part 300 relative to the first rotation part 200, and the gravity moment M1 of the second rotation part 300 is mg · Lcos θ, where M is the mass of the second rotation part 300, g is the gravity acceleration, L is the moment arm from the center of mass of the second rotation part 300 to the axis of the rotation shaft 3, and θ is the included angle between the second rotation part 300 and the horizontal plane. When the angle θ between the second rotating portion 300 and the horizontal plane is from 0 ° to 180 ° during the rotation of the second rotating portion 300 relative to the first rotating portion 200 about the rotating shaft 3, and the friction torque M2 and the gravity torque M1 satisfy that the difference does not exceed the preset value, the graphs of the friction torque M2 and the gravity torque M1 are shown in fig. 4, and the graphs of the gravity torque M1, the friction torque M2 and the total torque M3 are shown in fig. 5 when the total torque M3, M1+ M2 is maintained within a constant preset range.

As can be seen from fig. 4, when the included angle θ is in the range of 0 ° to 90 °, the second rotating portion 300 rotates upward around the rotating shaft 3, as the included angle θ increases, the arm L of force decreases gradually, the gravity moment M1 decreases gradually, the friction moment M2 decreases with the gravity moment M1, when the included angle θ is 90 °, the center of mass of the second rotating portion 300 rotates to a position right above the rotating shaft 3, at this time, the arm L of force is 0, and the gravity moment M1 is 0; when the included angle theta is within the range of 90-180 degrees, the second rotating part 300 rotates downwards around the rotating shaft 3, the force arm L is gradually increased along with the increase of the rotating angle, the gravity moment M1 is gradually increased, and the friction moment M2 is also increased. In fig. 4, the difference between the friction torque M2 and the gravity torque M1 is 0, that is, the friction torque M2 is set according to the gravity torque M1 to ensure that the friction torque M2 and the gravity torque M1 are equal in value, so as to achieve the purpose of saving labor, therefore, when the included angle θ is in the range of 0 ° to 90 °, the curve of the friction torque M2 coincides with the curve of the gravity torque M1, both a are reduced to 0 from a, and when the included angle θ is in the range of 90 ° to 180 °, the curve of the friction torque M2 is equal in value to the gravity torque M1, and in this included angle range, when the user manually operates the second rotating portion 300 to rotate, the resistance is zero, and the experience feeling is good.

During design, according to the change condition of the gravity moment M1 along with the included angle theta, the change requirement of the friction moment M2 along with the included angle theta is determined, then the size of the sleeve 4 and the size of the matching section 31 can be designed according to the change requirement of the friction moment M2, the number of the rotating shaft assemblies 100, the number of the sleeves 4 in each rotating shaft assembly 100 and other conditions, for example, according to the requirement of the friction moment M2 in fig. 4, the friction force between the sleeve 4 and the rotating shaft 3 changes from big to small and then big, specifically, as shown in fig. 11, the diameter of the matching section 31 is gradually big from the middle to the two ends along the axial direction of the matching section 31, namely, the diameter of the two ends is big while the diameter of the middle position is small, and the inner wall of the sleeve 4 is of a straight-tube structure, as shown in fig. 8; however, it is well known in the art for those skilled in the art to design the size of the inner wall of the sleeve 4 and the size of the matching section 31 provided on the shaft 3 according to the requirements and the above situations, and further description is omitted herein for the sake of brevity.

Of course, in this embodiment, the inner wall of the sleeve 4 may also be provided with a variable diameter section, or the outer wall of the rotating shaft 3 and the inner wall of the sleeve 4 may also be provided with variable diameter sections, which is not limited herein. If the inner wall of sleeve 4 is equipped with the reducing section, then, the diameter of this reducing section is diminished to both sides by the middle part along its axial gradually, and both ends diameter is less and middle part position diameter is great promptly, and 3 outer walls in pivot this moment can be provided with cooperation section 31 and also can be provided with the annular flange along circumference, and this flange can laminate with the reducing section of sleeve 4 inner wall.

Similarly, as shown in fig. 5, in order to ensure that the total moment M3 is M1+ M2 constant, the friction moment M2 needs to meet the curve requirement as shown in fig. 5 as the included angle θ increases, specifically, the diameter of the matching section 31 provided on the rotating shaft 3 is gradually increased from one end to the other end (as shown in fig. 10), or the inner wall of the sleeve 4 may be provided with a diameter-changing section, and the inner diameter of the diameter-changing section is gradually decreased from one end to the other end. Specifically, the size of the sleeve 4 and the size of the fitting section 31 may be designed according to the requirements of the friction torque M2, the number of the rotating shaft assemblies 100, the number of the sleeves 4 in each rotating shaft assembly 100, and the like.

The scheme that the sum of the gravity moment and the friction moment is constant is suitable for the occasions that the weight of the first rotating part 200 is not large, for example, the weight of the display side of the notebook computer is small, the notebook computer is generally required to be subjected to angle adjustment in the opening process, the resistance which needs to be overcome is constant in the process of opening the display side, and when the display side is closed, a user can directly buckle the display side on the keyboard side.

In addition, in practical application, the rotating shaft 3 is not necessarily arranged horizontally, and in this case, if the rotating shaft 3 is arranged in the vertical direction, the gravity moment M1 is 0, which may not be considered, and if the rotating shaft 3 is not arranged in the horizontal direction or the vertical direction, the gravity moment M1 of the rotating part during rotation may be analyzed and calculated according to specific situations, and then the change requirement of the friction moment M2 may be determined according to the gravity moment M1. How to analyze the calculation is known to those skilled in the art, and is not described herein for brevity.

When the electronic device is a notebook computer, the keyboard side is placed on a horizontal desktop, then the keyboard side is not moved, the display side is unfolded from a folded state to form an included angle (namely, the included angle between the two rotating parts) of 180 degrees, in the range, the change of the gravity moment is shown as an M1 curve in figure 4, in order to further improve the user experience, the preset included angle range is set to be 20-180 degrees, when the included angle between the display side and the keyboard side is in the preset included angle range, the friction moment is not smaller than the gravity moment, the difference value between the friction moment and the gravity moment is not larger than the preset value so as to ensure the rotation stability, and when the included angle between the display side and the keyboard side is in the range of 0-20 degrees, the gravity moment of the display side is larger than the friction moment of the rotating shaft assembly, that is to say, in this state, the user does not need to manually operate, the display side can rotate downwards under the action of self gravity to be attached to the keyboard side, so that folding is realized. Specifically, when the included angle between the two rotating frames is within the range of 0-20 degrees, the diameter of the part, used for being matched with the sleeve 4, of the matching section 31 is not larger than the diameter of the part, used for being matched with the sleeve 4, of the matching section 31 when the included angle is not larger than 20 degrees.

Of course, in this embodiment, the preset included angle may also be in a range of 20 ° to 360 °, and the like, which is not limited herein.

Furthermore, when the included angle between the display side and the keyboard side of the notebook computer is within the range of 100-120 degrees, the friction torque is larger than the gravity torque, namely M2 is larger than M1, and when the included angle between the display side and the keyboard side is within the range of 20-100 degrees or 120-180 degrees, the friction torque is not smaller than the gravity torque, namely M2 is larger than or equal to M1. Specifically, when the included angle is within the range of 100 degrees to 120 degrees, an outward convex structure is additionally arranged on the outer wall of the matching part of the matching section 31 and the sleeve 4 so as to increase the diameter of the position, and further increase the friction force and the friction torque.

As shown in fig. 9, the outer wall of the rotating shaft 3 is provided with a threaded portion 32, the threaded portion 32 forming the above-described first mating member, and the second mating member is a nut 5, the nut 5 being capable of being threadedly engaged with the threaded portion 32. That is, the rotating shaft 3 and the first mating member are an integral structure, specifically, the threaded portion 32 may be directly formed on the outer wall of the rotating shaft 3 by machining, or a stud may be fixedly connected to the rotating shaft 3 by welding or fastening. Or, in this embodiment, can also set up first fitting piece and pivot 3 to mutually independent structure, first fitting piece and pivot 3 keep coaxial and simultaneously with first mounting bracket 1 fixed can, and set up first fitting piece and pivot 3 when the integral type structure, can simplify overall structure to can effectively guarantee the axiality.

Of course, in this embodiment, the second fitting member and the sleeve 4 may also be configured as an integrated structure, and the inner wall of the sleeve 4 is processed to form an internal thread, and when the second fitting member is directly configured as the nut 5, the processing process can be simplified, and the cost can be reduced.

In this embodiment, the rotating shaft 3 may be capable of moving along the axial direction thereof relative to the first mounting bracket 1, as shown in fig. 6 and 7, a connecting portion 6 is further connected between the rotating shaft 3 and the first mounting bracket 1, the connecting portion 6 is fixed to the rotating shaft 3 and is provided with a sliding member 61, the first mounting bracket 1 is provided with a slideway, the slideway is arranged along the axial direction of the rotating shaft 3, the sliding member 61 is capable of sliding along the slideway, and in the process of rotating relative to the first rotating portion 200, the second rotating portion 300 slides along the slideway along with the threaded engagement of the two mating members, so that the rotating shaft 3 moves along the axial direction thereof relative to the sleeve 4. The sleeve 4 may be capable of moving in the axial direction relative to the second mounting bracket 2, and at this time, a connecting portion 6 is provided between the sleeve 4 and the second mounting bracket 2, the connecting portion 6 is fixed to the sleeve 4 and is provided with a sliding member 61, and the second mounting bracket 2 may be provided with a slide.

In this embodiment, the specific shape and structure of the connecting portion 6 are not limited, and the connecting portion 6 can be disposed to facilitate spatial arrangement while achieving axial sliding of the rotating shaft 3 relative to the first mounting frame 1 or axial sliding of the sleeve 4 relative to the second mounting frame 2.

Specifically, as shown in fig. 11, the sliding way is a sliding groove 7 provided on the mounting frame, a cross section of the sliding groove 7 is a C-shaped structure, the sliding member 61 is located in the sliding groove 7 and can slide along the sliding groove 7, and a width of the sliding member 61 is greater than an opening width of the sliding groove, so that the sliding member 61 can be limited to slide in the sliding groove 7 without being separated from the sliding groove 7, and the sliding stability is ensured. Of course, in this embodiment, the connecting portion 6 may be provided with a slide, and the mounting bracket may be provided with the sliding member 61. Mounting bracket accessible fastener, modes such as welding are fixed with first rotation portion 200 or second rotation portion 300, guarantee fixed stability, and connecting portion 6 between first mounting bracket and pivot 3, or play the connection effect between second mounting bracket and sleeve 4 can, consequently, when the mounting bracket is equipped with the slide, connecting portion 6 is provided with slider 61, can simplify connecting portion 6's concrete structure, reduce whole volume.

In addition, in this embodiment, the fixing manner between the connecting portion 6 and the rotating shaft 3 or between the connecting portion 6 and the sleeve 4 is not limited, and the rotating shaft 3 is further provided with a fixing plate 33, as shown in fig. 9 to 11, the connecting portion 6 and the fixing plate 33 are respectively provided with a fixing hole 8 correspondingly, and are fixed by a fixing bolt, or the rotating shaft 3 and the connecting portion 6 may be fixed by welding or integrally molding. Similarly, the fixing manner between the connecting portion 6 and the sleeve 4 is similar to the fixing manner between the connecting portion 6 and the rotating shaft 3, and therefore, for saving the text, the description is omitted.

As shown in fig. 8, in each rotating shaft assembly 100, the number of the sleeves 4 is two, the two sleeves 4 are coaxially arranged and respectively sleeved outside the rotating shaft 3, correspondingly, as shown in fig. 9, the rotating shaft 3 includes two sections of matching sections 31, and the two sleeves 4 are respectively correspondingly sleeved outside the two sections of matching sections 31 (as shown in fig. 6). The two sleeves 4 are respectively fixed relative to the second mounting frame 2, each sleeve 4 is provided with a notch 41, and the notches 41 of the two sleeves 4 are respectively located at two sides of the second mounting frame 2. With such an arrangement, the second rotating portion 300 can balance the stress conditions of the two sleeves 4 in the rotating process relative to the first rotating portion 200 due to the different arrangement positions of the notches 41, so as to ensure the stability, reduce the deformation and prolong the service life of the rotating shaft assembly 100.

Of course, in this embodiment, the number of the sleeves 4 may be set to be plural, and the arrangement of two sleeves 4 may simplify the overall structure while ensuring stability. In addition, the number of the rotating shafts 3 is not limited, as shown in fig. 9 and 10, the number of the rotating shafts 3 is one, and the number of the variable diameter sections 31 is the same as that of the sleeves 4, the rotating shafts 3 may be set to be a sectional structure, each variable diameter section 31 may be relatively fixed, and when the rotating shafts 3 and the first matching section are set to be an integral structure, the overall structure and the manufacturing process may be simplified.

As shown in fig. 8, the second mounting bracket 2 is connected and fixed to the outer walls of the two sleeves 4 and the nut 5, the notches of the two sleeves 4 are located on two sides of the second mounting bracket 2, the opening degree of the notch 41 of the sleeve 4 changes when the second rotating portion 300 rotates relative to the first rotating portion 200, the second rotating portion 300 can rotate relative to the first rotating portion 200 in two opposite directions indicated by arrows in fig. 7, and due to the friction between the inner wall of the sleeve 4 and the matching section 31, when the notches 41 of the two sleeves 4 are located on two sides of the second mounting bracket 2, the deformation of the notches 41 of the two sleeves 4 can be better balanced, and the service life can be prolonged.

As shown in fig. 8, the two sleeves 4 are both located on the same side of the nut 5 (i.e., the second mating member), and correspondingly, as shown in fig. 9, the two mating segments 31 are both located on the same side of the threaded portion 32 (i.e., the first mating member), so that the overall structure of the rotating shaft 3 can be simplified, and the processing process can be simplified. Of course, it is also possible that two sleeves 4 are located on each side of the nut 5, in which case the threaded portion 32 is also arranged between two mating segments 31.

The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.

Claims (13)

1. A spindle assembly, characterized by comprising a first mounting frame (1) and a second mounting frame (2);

the first mounting frame (1) is connected with a rotating shaft (3);

the second mounting frame (2) is connected with a sleeve (4), the sleeve (4) is sleeved outside the rotating shaft (3), and a notch (41) is formed in the side wall of the sleeve (4) in a penetrating mode along the axial direction of the sleeve;

at least one in the inner wall of sleeve (4) with the outer wall of pivot (3) is equipped with the reducing section, the diameter of reducing section is along its axial gradual change, and during two mounting brackets rotated relatively, can drive sleeve (4) for pivot (3) rotate and along axial displacement, in order to change sleeve (4) with frictional force between pivot (3).

2. A rotary shaft assembly as claimed in claim 1, wherein a first fitting piece is further connected to the first mounting frame (1), the first fitting piece is coaxial with the rotary shaft (3), a second fitting piece is further connected to the second mounting frame (2), the second fitting piece is coaxial with the sleeve (4), and the first fitting piece and the second fitting piece are in threaded fit;

the shaft (3) is movable in its axial direction relative to the first mounting (1) or the sleeve (4) is movable in its axial direction relative to the second mounting (2).

3. A rotary shaft assembly as claimed in claim 2, characterised in that the outer wall of the rotary shaft (3) is provided with a threaded portion (32), the threaded portion (32) forming the first mating member, and the second mating member being a nut (5).

4. The rotating shaft assembly according to claim 2, characterized in that a connecting part (6) is arranged between the rotating shaft (3) and the first mounting frame (1), the connecting part (6) is fixed with the rotating shaft (3), the first mounting frame (1) is provided with a slideway along the axial direction of the rotating shaft (3), and the connecting part (6) is provided with a sliding part (61) capable of sliding along the slideway;

or, be equipped with connecting portion (6) between sleeve (4) and second mounting bracket (2), connecting portion (6) with sleeve (4) are fixed, second mounting bracket (2) are followed the axial of sleeve (4) is equipped with the slide, connecting portion (6) are equipped with and can follow gliding slider (61) of slide.

5. The rotating shaft assembly according to claim 4, characterized in that the slideway is a sliding chute (7), the cross section of the sliding chute (7) is of a C-shaped structure, the sliding piece (61) is positioned in the sliding chute (7), and the width of the sliding piece (61) is larger than the opening width of the sliding chute (7).

6. A rotary shaft assembly according to any one of claims 2-5, characterized in that the number of the sleeves (4) is two, the two sleeves (4) are respectively fixed with the second mounting rack (2), and the notches (41) of the two sleeves (4) are respectively arranged at two sides of the second mounting rack (2).

7. A rotary shaft assembly as claimed in claim 6, characterised in that both sleeves (4) are located on the same side of the second mating member.

8. A rotary shaft assembly according to any one of claims 1-5, characterized in that the rotary shaft (3) is provided with a matching section (31), the diameter of the matching section (31) is gradually increased from the middle part to two sides along the axial direction of the matching section, and the matching section (31) forms the reducing section;

when the sleeve (4) is provided with the reducing section, the diameter of the reducing section is gradually reduced from the middle part to two sides along the axial direction of the reducing section.

9. A rotary shaft assembly as claimed in any one of claims 1 to 5, characterized in that the rotary shaft (3) is provided with a matching section (31), the diameter of the matching section (31) is gradually increased from one end to the other end along the axial direction of the rotary shaft, and the diameter is formed into the diameter-changing section;

when the sleeve (4) is provided with the reducing section, the diameter of the reducing section is gradually reduced from one end to the other end along the axial direction of the reducing section.

10. An electronic device, comprising two rotating parts and the rotating shaft assembly according to any one of claims 1 to 8, wherein two mounting frames of the rotating shaft assembly are respectively fixed corresponding to the two rotating parts;

when the included angle between two the rotation portion is when predetermineeing the angle range, the gravity moment of rotation portion is not less than to the friction moment of pivot subassembly.

11. The electronic device according to claim 10, wherein the number of the rotating shaft assemblies is two, and the rotating shafts (3) of the two rotating shaft assemblies are arranged at intervals and are coaxial.

12. The electronic device according to claim 10 or 11, wherein the electronic device is a notebook computer, and a keyboard side and a display side of the notebook computer form the two rotating parts;

the preset angle range is 20-180 degrees, and when the included angle between the two rotating parts is 0-20 degrees, the gravity moment is larger than the friction moment.

13. The electronic device of claim 12, wherein the friction torque is greater than the gravity torque when an included angle between the two rotating portions is 100-120 °.

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