CN217107814U - Rotating shaft structure and electronic equipment - Google Patents
Rotating shaft structure and electronic equipment Download PDFInfo
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- CN217107814U CN217107814U CN202122139306.3U CN202122139306U CN217107814U CN 217107814 U CN217107814 U CN 217107814U CN 202122139306 U CN202122139306 U CN 202122139306U CN 217107814 U CN217107814 U CN 217107814U
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Abstract
The embodiment of the application discloses a rotating shaft structure and electronic equipment. The electronic device can be a mobile phone, a wearable device, a vehicle-mounted device, a virtual reality device, a notebook computer, a super mobile personal computer, a netbook, a personal digital assistant and other terminal products. The pivot structure in this application embodiment is applied to electronic equipment, and when electronic equipment was opening, the torsional spring can provide certain turning moment, and operating personnel only need exert less power this moment and just can overcome the moment of the relative dabber of gravity of electronic equipment second part, opens the second part, has reduced electronic equipment and has opened the resistance, has improved user's use and has experienced the sense.
Description
Technical Field
The application relates to the technical field of electronic products, in particular to a rotating shaft structure and electronic equipment.
Background
Electronic equipment such as notebook computer, its display side and keyboard side rotate through pivot structure and connect, and present pivot structure is dry friction damping structure usually, but present notebook computer damping is great when opening, and user's use experience is not good.
Disclosure of Invention
The embodiment of the application provides a pivot structure and electronic equipment, and the damping is less when opening at least to promote the product and promote product and use experience.
In one aspect, an embodiment of the present application provides a rotating shaft structure for realizing relative rotation between a first component and a second component, where the rotating shaft structure includes a torsion spring assembly and a spindle for fixing with the first component, the torsion spring assembly includes at least a torsion spring, the torsion spring includes a first arm and a second arm, the torsion spring is sleeved on the spindle, the first arm is fixedly connected with the spindle, the second arm is for fixedly connecting with the second component, the second component rotates reciprocally between a first position and a second position relative to the first component, and a position where the torsion spring is in a free state is located between the first position and the second position.
In this embodiment, when the torsion spring rotates from the third position to the first position or the second position, the external force of the operator and the gravity on the display side of the notebook computer do work on the torsion spring, and the larger the rotation angle is, the larger the energy storage of the torsion spring is, that is, the gravity on the display side of the notebook computer is converted into the elastic force of the torsion spring. When the torsion spring moves from the first position or the second position to the third position, the elastic energy of the torsion spring is gradually released and converted into the torsional moment to do work. Taking the notebook computer to rotate to the third position from the first position as an example, when the notebook computer is located at the first position, the elastic energy of the torsion spring is maximum, the rotating moment that the corresponding torsion spring can provide is also maximum, at the moment, an operator only needs to apply a small force to overcome the moment of the gravity of the display side of the notebook computer relative to the mandrel, the display side of the notebook computer is opened, the opening resistance of the notebook computer is reduced, and the use experience of a user is improved.
On the one hand, the embodiment of the present application further provides a first implementation manner of the one hand:
at least in a partial angular position between the first and second positions, the magnitude of the torque of the torsion spring assembly relative to the spindle is equal to the weight of the second partThe difference in the magnitude of the force relative to the moment of the mandrel is within a predetermined range. The predetermined range may be zero or a value near zero, such that the force F applied by the operator to the second member is Opening device The electronic equipment is close to zero, namely, the second component can be rotated between the first position and the second position by an operator with only applying small force, so that the electronic equipment can be turned on or off by one hand of the operator, and the opening flexibility of the electronic equipment is improved.
Based on the first implementation manner of one aspect, an embodiment of the present application further provides a second implementation manner of one aspect:
at least in a part of the angular position between the first position and the second position, the moment of the torsion spring assembly relative to the spindle is the same as the moment of the weight of the second part relative to the spindle, in the opposite direction. In this embodiment, the second member can stay at a partial angular position with respect to the first member while satisfying a smaller opening force ratio, thereby improving the convenience of use.
Based on the second implementation manner of the aspect, the present application provides a third implementation manner of the aspect:
the torsion spring is of a structure with rigidity changing along with the rotation angle, so that at least in a partial angle position between the first position and the second position, the difference between the moment of the torsion spring relative to the spindle and the moment of the gravity of the second component relative to the spindle is in a preset range and opposite in direction. In the embodiment, the rigidity of the torsion spring is designed to be variable, and the torsion spring is designed to be matched with the gravity moment of the second part, so that the technical effect that the second part has small damping or basically has no damping in the rotating process can be realized only by the torsion spring, and the rotating shaft structure has fewer parts and light weight.
Based on the third implementation manner of an aspect, the present application provides a fourth implementation manner of an aspect:
the rotating shaft structure comprises a fixed support and a rotating support, the mandrel is fixed to the fixed support, the rotating support is provided with a mounting hole, the mounting hole is rotatably mounted on the mandrel, at least part of the torsion spring is located inside the mounting hole, the first arm and the second arm are fixedly connected with the fixed support and the rotating support respectively, the fixed support is provided with a first mounting structure which is matched and fixed with the first component, and the rotating support is provided with a second mounting structure which is matched and fixed with the second component. The rotating shaft structure is simple in structure and light in weight on the premise of realizing the fixation of the core shaft.
Based on the second implementation manner of the aspect, the present application provides a fifth implementation manner of the aspect:
the rigidity value of the torsion spring is constant, the torsion spring assembly further comprises at least one friction unit, each friction unit comprises a first part and a second part which can be matched to generate friction force, the first part and the mandrel are at least limited in circumferential direction, the second part is used for being fixed with the second part and is in rotating connection with the mandrel, the friction force of the friction unit changes along with the rotating angle, so that in the rotating process from the position of the torsion spring in a free state to the first position or the second position, the sum of the friction torque of each friction unit relative to the mandrel and the torsion torque of the torsion spring relative to the mandrel is opposite to the difference of the gravity of the second part and the torque of the mandrel in a preset range and in a direction.
In this embodiment, the rotating shaft structure is further provided with a friction unit in addition to a constant-stiffness torsion spring, the friction force in the friction unit changes with the rotating angle, and the difference between the torques of the torsion spring and the gravity is compensated through the change of the friction force, so that the sum of the friction torque of each friction unit relative to the spindle and the torsional torque of the torsion spring relative to the spindle is opposite to the difference between the magnitudes of the torques of the gravity of the second component relative to the spindle in the process of rotating from the free position of the torsion spring to the first position or the second position. The rotating shaft structure is easy to process.
Based on the fifth implementation manner of the aspect, the present application provides a sixth implementation manner of the aspect:
the first part comprises a first friction plate and a second friction plate, a first side surface of the second friction plate is in matched frictional contact with the first friction plate, a second side surface of the second friction plate is opposite to the second part, and the surface of the second part opposite to the second side surface and the second side surface are both convex-concave structural surfaces so as to form friction force changing along with the rotation angle.
The magnitude of the friction force between the first friction plate and the second friction plate in this embodiment may be determined according to the rotation engagement positions of the two surfaces of the second portion opposite to the second side surface, that is, the friction force of the friction unit varying with the rotation angle can be configured by arranging the surface shapes of the second side surface and the second portion opposite thereto.
Based on the sixth implementation manner of the aspect, the present application provides a seventh implementation manner of the aspect:
the rotating shaft structure further comprises a fixing support, the mandrel is installed on the fixing support, the fixing support is provided with an installation structure fixed with the first component, the friction unit further comprises a spring, and the spring is sleeved on the mandrel and is pressed between the first friction plate and the fixing support. In this way, a preload can be applied to the first friction plate and the second friction plate by the spring to generate a corresponding friction force.
Based on the sixth implementation manner of the aspect, the present application provides a seventh implementation manner of the aspect:
the rotating shaft structure further comprises a nut, the fixing support comprises a first supporting wall and a second supporting wall, the first supporting wall and the second supporting wall are provided with coaxial through holes, one end of the mandrel is fixed in the through hole of the first supporting wall, and the other end of the mandrel penetrates through the through hole in the second supporting wall to be in threaded fit with the nut. The rotating shaft structure is light in weight.
Based on any one of the fifth to seventh implementation manners of the one aspect, the example of the present application further provides an eighth implementation manner of the one aspect:
the number of the friction units is two, the second parts of the two friction units are the same member, and the first parts of the two friction units are symmetrically positioned on two sides of the member. In the embodiment, the first friction plate and the second friction plate which generate friction force in the two friction units are symmetrically arranged relative to the component, so that the stress stability and balance of the mandrel are realized.
Based on an aspect to the eighth implementation manner of the first aspect, the present application provides a ninth implementation manner of the aspect:
the included angle between the first position and the second position ranges from 170 degrees to 180 degrees, and the included angle between the position of the torsion spring in the free state and the first position ranges from 70 degrees to 95 degrees. The angle between the first position and the second position may be 180 °, and the position where the torsion spring is in the free state may be 90 ° relative to the first position.
In a second aspect, an embodiment of the present application provides an electronic device, which includes a first component and a second component, where the first component and the second component are connected through a rotating shaft structure in any one of the above embodiments to implement relative rotation.
The technical effect of the electronic device is similar to that of the hinge structure provided in the above aspect, 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 electronic device is a notebook computer, and one of a display side and a keyboard side of the notebook computer is a first component, and the other is a second component.
Drawings
Fig. 1 is a schematic view illustrating a hinge structure applied to an electronic device according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of three rotational positions of an electronic device in an embodiment of the present application;
FIG. 3 is an exploded view of a hinge structure according to a first embodiment of the present disclosure;
FIG. 4 is an assembled view of the hinge structure shown in FIG. 3;
FIG. 5 is a schematic illustration of the torque of the torsion spring and the torque of the second member according to an embodiment of the present application; wherein the abscissa is the rotation angle of the second component relative to the horizontal plane, and the ordinate is the moment;
FIG. 6 is an exploded view of a second embodiment of a hinge assembly according to the present application;
FIG. 7 is an assembled view of the hinge structure shown in FIG. 6;
FIG. 8 is a profile of the pitch diameter of a torsion spring in an embodiment of the present application.
Detailed Description
In the following, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or as implying a number of indicated technical features. Thus, features defining "first," "second," etc. may explicitly or implicitly include one or more of the features.
The electronic device provided in the embodiment of the present application may be a mobile phone, a tablet computer, a wearable device, an in-vehicle device, an Augmented Reality (AR)/Virtual Reality (VR) device, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, a Personal Digital Assistant (PDA), and other mobile terminals, or may also be professional shooting devices such as a digital camera, a single lens reflex/micro single lens camera, a sports camera, a pan/tilt camera, and an unmanned aerial vehicle.
The embodiment of the application provides a rotating shaft structure, the rotating shaft structure is used for realizing the relative rotation of a first part and a second part, the first part and the second part can be any parts which need to rotate relatively, and can be two parts of an electronic device which are connected in a rotating manner, for example, one of the first part and the second part can be a display side of a notebook computer, and the other part can be a keyboard side of the notebook computer, and of course, one of the first part and the second part can also be a display side of a folding mobile phone, and the other part can be a keyboard side of the folding mobile phone. The rotation shaft structure in the embodiment can be adopted to realize rotation of the electronic device as long as the electronic device has two parts which rotate relatively.
Referring to fig. 1, fig. 1 is a schematic view illustrating a hinge structure applied to an electronic device according to an embodiment of the present disclosure, wherein a in fig. 1 indicates a mounting position of the hinge structure.
The electronic device includes a first component 100 and a second component 200 that rotate relatively, in fig. 1, the electronic device is illustrated by taking a notebook computer as an example, in fig. 1, the first component 100 of the electronic device is a display side of the notebook computer, the second component 200 is a keyboard side of the notebook computer, and the rotation shaft structure 300 realizes a rotation connection between the display side and the keyboard side.
Referring to fig. 2, fig. 2 is a schematic view of a rotating shaft structure according to a first embodiment of the present application.
The rotating shaft structure comprises a torsion spring assembly and a mandrel 2, the torsion spring assembly at least comprises a torsion spring 8, the torsion spring 8 is one of spiral springs, a first arm and a second arm which extend outwards and are used for being connected with two parts rotating relatively are arranged at two ends of the torsion spring, the extending length and the structural form of the first arm and the second arm are not limited, and the torsion spring can be reasonably configured according to the specific structure of the electronic equipment applied with the torsion spring.
In the rotating shaft structure, the torsion spring 8 is sleeved on the mandrel 2, the first arm of the torsion spring 8 is fixedly connected with the mandrel 2, and the torsion spring 8 and the mandrel 2 can be coaxially arranged, so that the torsion spring 8 can rotate around the axis of the mandrel 2. The second arm of the torsion spring 8 is adapted to be fixedly connected to the second part. When the hinge is specifically applied to electronic equipment, one of the first arm and the second arm is fixed to the first part 100 of the electronic equipment, and the other is fixed to the second part 200 of the electronic equipment, so that when the torsion spring 8 rotates relative to the core shaft 2, the corresponding first part 100 and second part 200 can be driven to rotate relative to each other, in fig. 1, the first arm and the core shaft 2 are both fixed to the keyboard side of the notebook computer, and the second arm is fixed to the display side of the notebook computer.
The spindle 2 and the torsion spring 8 are adapted to rotate, and a predetermined gap may be provided between the spindle 2 and the torsion spring 8, or there may be no gap between the spindle and the torsion spring as long as the rotation of the torsion spring 8 is not affected.
In this embodiment the second arm is reciprocally rotatable relative to the first arm between a first position and a second position and the torsion spring 8 is free when the second arm is rotated relative to the first arm to a third position, the third position being between the first and second positions. When the hinge structure 300 is mounted on an electronic device, the first member 100 and the second member 200 of the electronic device can rotate reciprocally with the torsion spring 8 between the first position and the second position, and the position where the torsion spring 8 is in the free state is located between the first position and the second position. In one specific example, the first position may be a position where the display side and the keyboard side of the notebook computer are closed, the second position may be a position where the display side and the keyboard side are approximately 180 °, and the third position may be a position where the display side and the keyboard side are approximately 90 °. Thus, when the torsion spring 8 rotates from the third position to the first position or the second position, the external force of the operator and the gravity of the display side of the notebook computer do work on the torsion spring 8, and the larger the rotation angle is, the larger the energy storage of the torsion spring 8 is, that is, the gravity of the display side of the notebook computer is converted into the elastic force of the torsion spring 8. When the torsion spring 8 moves from the first position or the second position to the third position, the elastic energy of the torsion spring 8 is gradually released and converted into the torsional moment to do work. Taking the notebook computer to rotate to the third position from the first position as an example, when the notebook computer is located at the first position, the elastic energy of the torsion spring 8 is maximum, the rotating moment that the corresponding torsion spring 8 can provide is also maximum, at the moment, an operator only needs to apply a small force to overcome the moment of the gravity of the display side of the notebook computer relative to the mandrel 2, the display side of the notebook computer is opened, the opening resistance of the notebook computer is reduced, and the use experience of a user is improved.
Of course, the angle between the first position and the second position is not limited to 180 ° as described above, and the angle between the first position and the second position may range from 170 ° to 180 °, and similarly, the position of the torsion spring 8 in the free state is not limited to 90 °, and the angle between the second portion and the first position may range from 70 ° to 95 ° when the torsion spring 8 is in the free state. Referring to fig. 2, for example, the first position is a 0 ° position, that is, the first component 100 is horizontal, the included angle between the second component 200 and the first component 100 is 0 °, the second position is a 180 ° position, that is, the second component 200 is unfolded 180 ° relative to the first component 100, and the third position is a 90 ° position, that is, the second component 200 is rotated to a vertical position relative to the first component 100, so as to continue to describe the technical solutions and the technical effects.
In this embodiment, at least at some angular positions between the first and second positions, the amount of torque of the torsion spring assembly relative to the spindle 2 is within a predetermined range of the amount of torque of the weight of the second member 200 relative to the spindle 2. In one example, the change in the weight of the second part 200 relative to the torque of the spindle 2 decreases and then changes during rotation from the first position to the second positionReferring to fig. 5, the abscissa is the rotation angle of the second member relative to the horizontal plane, and the ordinate is the moment, when the second member 200 rotates between 0 ° and 180 ° with respect to the first member 100, the gravity of the second member 200 is approximately cosine curve relative to the moment of the mandrel 2. As long as the torque generated by the torsion spring 8 relative to the spindle 2 is also set according to a cosine curve, the difference between the gravity of the second component 200 and the torque of the torsion spring 8 relative to the spindle 2 is the same or different by a predetermined value, namely F, during the whole rotation process of the first position and the second position Opening device L＝GL 1 cos θ-M Assembly ＝C Constant value The force F applied to the second member 200 by the operator when rotating the second member 200 Opening device The constant effect is basically achieved, and the use experience of the product is improved. In the above formula, G is the gravity of the second member 200, L 1 Is the distance from the center of mass of the second part 200 to the axis of the mandrel 2, theta is the angle of the second part 200 to the horizontal, M Assembly For torque of the torsion spring assembly to the spindle 2, F Opening device The force applied to the second member 200 when the operator opens and closes the electronic product, and L is the force F applied to the second member 200 Opening device Distance from the mandrel 2, C Constant value Is a constant and may be zero or some other value not equal to zero. When C is present Constant value When the moment is zero, the moment M of the torsional spring component relative to the core shaft 2 is Assembly Moment GL of the weight of the second part 200 relative to the spindle 2 1 cos θ is of the same magnitude and in the opposite direction, when the force F applied by the operator to the second member 200 is Opening device The second member 200 can be rotated between the first position and the second position by applying a small force, which is beneficial to the operator to open or close the electronic device with one hand, and the opening flexibility of the electronic device is improved.
It should be noted that, in the present application, the first component 100 is substantially parallel to the horizontal plane, so θ can also be understood as the angle between the second component 200 and the first component 100.
The torque variation law of the torsion spring assembly relative to the spindle 2 in the above embodiments is the same as the torque variation law of the gravity of the second member 200 relative to the spindle 2, and the difference between the two is in a predetermined range, and the above laws can be followed in the whole process from the first position to the second position, or in a certain section from the first position to the second position.
Moment M of torsion spring assembly to mandrel 2 Assembly The same change law of the gravity of the second member 200 with respect to the moment of the mandrel 2 can be achieved in the following manner, and the difference between the two is in a predetermined range.
Referring to fig. 5, fig. 5 is a schematic diagram illustrating a torque of the torsion spring 8 relative to the spindle and a torque of the second member 200 relative to the spindle according to an embodiment of the present disclosure, wherein the torque is implemented as a torque variation curve of the gravity of the second member relative to the spindle, and a dotted line is a torque variation curve of the torsion spring relative to the spindle.
Wherein the torque formula of the torsion spring 8 is M1 ═ K θ where
Wherein E is Young's modulus, D is the middle diameter of the torsion spring 8, n is the effective number of turns, and D is the diameter of the torsion spring 8 wire
When all of the four variables E, D, n, and D are constant, the stiffness K of the torsion spring 8 is constant, and thus it is impossible to achieve a nonlinear change in synchronization with the moment generated by the gravity of the second member 200.
When the stiffness of the torsion spring 8 is configured to change during the twisting process so that the value of the moment generated by the torsion spring 8 and the value of the moment generated by the gravity of the second member 200 are equal or the difference value is constant, i.e. in this embodiment, the torsion spring 8 is configured such that the stiffness thereof changes with the rotation angle, so that the difference between the magnitude of the moment of the torsion spring 8 relative to the spindle 2 and the magnitude of the moment of the gravity of the second member 200 relative to the spindle 2 is within a predetermined range and in the opposite direction.
When the difference between the moment generated by the rigidity of the torsion spring 8 and the moment generated by the gravity of the second component 200 is zero, the torque can completely overcome the resistance generated by the gravity of the second component 200 within the range of 0-180, and the torque generated by the torsion spring 8 and the moment generated by the gravity of the second component 200 are always kept balanced in the whole opening and closing process, so that the opening and closing of the second component 200 can be realized only by small external force, and the stable posture can be kept at any angle.
Referring to fig. 8, the torque M1 of the torsion spring 8 is changed according to the above rule by changing the value of D, in an example, when D is set according to the rule shown in fig. 8, the change rule of the torque M1 of the torsion spring 8 relative to the spindle 2 during rotation is the same as the change rule of the gravity of the second member 200, and the two change rules can be substantially equal.
The above embodiment only shows an embodiment in which the change of the D value of the torsion spring 8 realizes that the change rule of the moment M1 of the torsion spring 8 relative to the spindle 2 during rotation is the same as the change rule of the gravity of the second component 200, and the magnitudes of the two can be substantially equal, and it should be understood by those skilled in the art that the change rule of the moment of the torsion spring assembly during rotation can be obtained by reasonably configuring one or more of E, D, n, and D of the torsion spring 8, and the specific embodiments of other parameter configurations are not described in detail herein, and those skilled in the art can fully realize the change rule based on the contents described herein.
Referring to fig. 6 and 7 again, the torsion spring assembly in this embodiment may further include a fixed bracket 6 and a rotating bracket 1, wherein the spindle 2 is fixed to the fixed bracket 6, the spindle 2 may be locked and fixed to the fixed bracket 6 by a lock nut 5, specifically, the fixed bracket 6 includes a first supporting wall 61 and a second supporting wall 62, the spindle 2 is supported on the first supporting wall 61 and the second supporting wall 62, the rotating bracket 1 has a mounting hole, the rotating bracket 1 is rotatably mounted on the spindle 2 through the mounting hole, the torsion spring 8 is also sleeved on the spindle 2 and is at least partially located inside the mounting hole, and the first arm and the second arm of the torsion spring 8 are respectively fixed to the fixed bracket 6 and the rotating bracket 1. The fixed bracket 6 has a first mounting structure that is fixed in cooperation with the first member 100, and the rotating bracket 1 has a second mounting structure that is fixed in cooperation with the second member 200.
Fig. 7 shows a specific embodiment in which the first mounting structure and the second mounting structure are hole structures, such as the hole 6a provided on the fixed bracket 6 and the hole 1a provided on the rotating bracket 1 shown in fig. 7. Of course, the specific forms of the fixed bracket 6, the rotating bracket 1, the first mounting structure and the second mounting structure are not limited to those described herein, and may be appropriately set according to the electronic device to be used.
Another embodiment of the hinge structure 300 is given below, and the stiffness of the torsion spring 8 is constant in the following, unlike the above-described change of the stiffness of the torsion spring 8.
In order to achieve the normal opening and closing of the second member 200 relative to the first member 100, the maximum torque variation curve of the torsion spring 8 relative to the spindle 2 with constant stiffness is shown as a dotted line in fig. 5, the torque formula M1 of the torsion spring 8 is K θ, in order to compensate the difference between the torque of the torsion spring 8 and the gravity torque of the second portion during rotation, the torsion spring assembly further comprises at least one friction unit, each friction unit comprises a first portion and a second portion which can cooperate to generate friction force, the first portion is at least circumferentially limited with respect to the spindle 2, i.e. the first portion cannot rotate relative to the spindle 2, and the second member 200 is fixed with the second member 200 and is rotatably connected with the spindle 2. Referring to fig. 3, the second part is a rotating tube 1-1 of the rotating bracket 1, and the rotating bracket 1 is fixedly connected to the second member 200. The first part comprises a first friction plate 4 and a second friction plate 7 arranged on the mandrel 2.
The friction force of the friction units changes along with the rotation angle, so that the difference between the sum of the friction torque of each friction unit relative to the spindle 2 and the torsion torque of the torsion spring 8 relative to the spindle 2 and the magnitude of the gravity of the second component 200 relative to the spindle 2 is in a preset range and opposite to the preset direction in the process of rotating from the position of the torsion spring 8 in the free state to the first position or the second position.
With GL 1 cosθ＝Kθ+M f For example, where M f For the moment generated by the friction force, when the second member 200 rotates from the 90 ° position to the 0 ° position or the 180 ° position, the moments generated by the three are balanced, and the user can rotate the second member 200 with only a small force and can stop the second member 200 at any position.
GL when it is rotated from the first position (0 DEG position) or the second position (180 DEG position) to the 90 DEG position 1 cos θ+M f ＝Kθ+F Opening device L, during which the elastic moment of the torsion spring 8 is able to counteract a part of the resistance moment of gravity and friction, so that the user opens the second part 20The force of 0 is also relatively small.
Referring again to fig. 3 and 4, in one example, the first side surface of the second friction plate 7 is in frictional contact with the first friction plate 4, the second side surface 71 is opposite to the second portion, and the surface of the second portion opposite to the second side surface 71 and the second side surface 71 are both convex-concave structural surfaces configured to form a frictional force varying with the rotation angle. The rotating bracket 1 shown in fig. 3 includes a second part, the rotating pipe 1-1 of the rotating bracket 1 is the second part, both side surfaces of the rotating pipe 1-1 are provided with convex-concave structural surfaces, and a convex-concave structural surface 1b on one side is shown in fig. 3, and both side structures are the same.
When the second part rotates relative to the second friction plate 7, because the two opposite surfaces of the second part and the second friction plate 7 are of convex-concave structures, the acting force between the second part and the second friction plate can be different in the rotating process, so that the contact force between the second friction plate 7 and the first friction plate 4 is changed, and correspondingly, the friction force between the first friction plate 4 and the second friction plate 7 is changed, namely, the requirements for GL can be met by arranging the shapes of the two opposite surfaces of the second part and the second friction plate 7 1 cosθ＝Kθ+M f The friction force of (3).
The surface of the second portion opposite the second side and the shape of the second side are determined according to the requirements of the electronic device to be applied.
In this embodiment, the rotating shaft structure 300 further includes a fixing bracket 6, the mandrel 2 is mounted on the fixing bracket 6, the fixing bracket 6 is provided with a mounting structure fixed with the first component 100, and the friction unit further includes a spring sleeved on the mandrel 2 and press-fitted between the first friction plate and the fixing bracket 6. As shown in fig. 3 and 4, the friction unit includes two, and the springs in the two friction units are respectively the first spring 11 and the second spring 3, the first spring 11 is press-fitted between the first friction plate 10 and the first support wall 61 of the fixed bracket 6, and the second spring 3 is press-fitted between the first friction plate 4 and the second support wall 62 of the fixed bracket 6.
Therefore, under the action of the elastic restoring force of the spring, the surfaces of the first friction plate and the second friction plate which are matched and rubbed can be always abutted, and the using reliability of the mechanism is improved.
In one example, the spindle structure 300 further includes a nut 5, the fixing bracket 6 includes a first supporting wall 61 and a second supporting wall 62, the first supporting wall 61 and the second supporting wall 62 have coaxial through holes, one end of the spindle 2 is fixed inside the through hole of the first supporting wall 61, and the other end passes through the through hole of the second supporting wall 62 to be in threaded fit with the nut 5. Namely, the other end of the mandrel 2 is provided with a threaded section 21, and the nut 5 is matched and installed on the threaded section. The adjustment of the compression amount of the spring can be realized by adjusting the axial position of the nut 5 on the thread section 21, so that the adjustment of the pre-tightening friction force between the first friction plate and the second friction plate when the rotating shaft structure 300 is at the 90-degree position is realized.
The number of the friction units in the rotating shaft structure 300 may be two, the second parts of the two friction units are the same member, and the first parts of the two friction units are symmetrically located at two sides of the member. Referring to fig. 3 again, the first friction plates 10, the second friction plates 9, the first springs 11 and the rotating bracket 1 may form a friction unit, the first friction plates 4, the second friction plates 7, the second springs 3 and the rotating bracket 1 may also form a friction unit, the two first friction plates are symmetrically arranged at two sides of the rotating bracket, and the two second friction plates are symmetrically arranged at two sides of the rotating bracket 1. In the embodiment, the first part symmetrically arranged with respect to the rotating member is arranged in the rotating shaft structure 300, so that the stress stabilization and balance of the mandrel 2 can be realized.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (12)
1. A rotating shaft structure used for realizing the relative rotation of a first part and a second part is characterized in that the rotating shaft structure comprises a torsion spring assembly and a mandrel used for being fixed with the first part, the torsion spring assembly at least comprises a torsion spring, the torsion spring comprises a first arm and a second arm, the torsion spring is sleeved on the mandrel, the first arm is fixedly connected with the mandrel, the second arm is used for being fixedly connected with the second part, the second part rotates in a reciprocating mode between a first position and a second position relative to the first part, and the position of the torsion spring in a free state is located between the first position and the second position; at least in a partial angle position between the first position and the second position, the difference between the moment of the torsion spring assembly relative to the mandrel and the moment of the gravity of the second component relative to the mandrel is within a preset range.
2. The hinge structure of claim 1, wherein at least at some angular positions between the first and second positions, the torque of the torsion spring assembly relative to the spindle is the same magnitude and opposite direction as the torque of the weight of the second member relative to the spindle.
3. The hinge structure according to claim 2, wherein the torsion spring has a stiffness varying with a rotational angle, so that at least at a portion of the angular position between the first position and the second position, a difference between a moment of the torsion spring relative to the spindle and a moment of the second member relative to the spindle due to gravity is in a predetermined range and in an opposite direction.
4. The hinge structure according to claim 3, wherein the hinge structure comprises a fixed bracket and a rotating bracket, the core shaft is fixed to the fixed bracket, the rotating bracket has a mounting hole, the mounting hole is rotatably mounted to the core shaft, the torsion spring is at least partially located inside the mounting hole, the first arm and the second arm are respectively and fixedly connected to the fixed bracket and the rotating bracket, the fixed bracket has a first mounting structure that is fixed to the first component, and the rotating bracket has a second mounting structure that is fixed to the second component.
5. The spindle structure according to claim 2, wherein the torsion spring has a constant stiffness value, the torsion spring assembly further comprises at least one friction unit, each friction unit comprises a first part and a second part which can be matched to generate friction force, the first part and the mandrel are limited at least in the circumferential direction, the second part is used for being fixed with the second part and is connected with the mandrel in a rotating mode, the friction force of the friction unit changes along with the rotating angle, so that during the rotation from the position where the torsion spring is in the free state toward the first position or the second position, the sum of the friction torque of each friction unit relative to the mandrel and the torsion torque of the torsion spring relative to the mandrel, the difference between the gravity of the second component and the moment of the mandrel is in a preset range and opposite in direction.
6. The spindle structure according to claim 5, wherein the first portion includes a first friction plate and a second friction plate, a first side surface of the second friction plate is in frictional engagement with the first friction plate, a second side surface is opposite to the second portion, and both a surface of the second portion opposite to the second side surface and the second side surface are convex-concave structural surfaces configured to form a frictional force varying with a rotation angle.
7. The hinge structure according to claim 6, further comprising a fixing bracket, wherein the mandrel is mounted to the fixing bracket, the fixing bracket is provided with a mounting structure fixed to the first member, and the friction unit further comprises a spring, and the spring is sleeved on the mandrel and is press-fitted between the first friction plate and the fixing bracket.
8. The hinge structure according to claim 7, further comprising a nut, wherein the fixing bracket comprises a first supporting wall and a second supporting wall, the first supporting wall and the second supporting wall have coaxial through holes, one end of the spindle is fixed inside the through hole of the first supporting wall, and the other end of the spindle passes through the through hole of the second supporting wall to be in threaded engagement with the nut.
9. The hinge structure according to any one of claims 5 to 8, wherein the number of the friction units is two, the second portions of the two friction units are the same member, and the first portions of the two friction units are symmetrically located on both sides of the member.
10. The hinge structure according to any one of claims 1 to 8, wherein the angle between the first position and the second position is in the range of 170 ° to 180 °, and the angle between the free position of the torsion spring and the first position is in the range of 70 ° to 95 °.
11. An electronic device comprising a first component and a second component, the first component and the second component being connected for relative rotation by a hinge structure according to any one of claims 1-10.
12. The electronic device of claim 11, wherein the electronic device is a notebook computer, and one of a display side and a keyboard side of the notebook computer is the first component and the other is the second component.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122139306.3U CN217107814U (en) | 2021-09-06 | 2021-09-06 | Rotating shaft structure and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122139306.3U CN217107814U (en) | 2021-09-06 | 2021-09-06 | Rotating shaft structure and electronic equipment |
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| CN217107814U true CN217107814U (en) | 2022-08-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117041450A (en) * | 2023-10-10 | 2023-11-10 | 淮安市中嘉信息技术有限公司 | Computer detachable camera |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117041450A (en) * | 2023-10-10 | 2023-11-10 | 淮安市中嘉信息技术有限公司 | Computer detachable camera |
| CN117041450B (en) * | 2023-10-10 | 2023-12-26 | 淮安市中嘉信息技术有限公司 | Computer detachable camera |
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Effective date of registration: 20240112 Address after: No. 9, Xingyao Road, Chang'an District, Xi'an, Shaanxi Province 710000 Patentee after: Xi'an Honor Device Co.,Ltd. Address before: Unit 3401, unit a, building 6, Shenye Zhongcheng, No. 8089, Hongli West Road, Donghai community, Xiangmihu street, Futian District, Shenzhen, Guangdong 518040 Patentee before: Honor Device Co.,Ltd. |