CN116181851B - Self-adaptive adjusting rotary damper - Google Patents
Self-adaptive adjusting rotary damper Download PDFInfo
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- CN116181851B CN116181851B CN202310026187.1A CN202310026187A CN116181851B CN 116181851 B CN116181851 B CN 116181851B CN 202310026187 A CN202310026187 A CN 202310026187A CN 116181851 B CN116181851 B CN 116181851B
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- rotor
- central rotor
- central
- rotary damper
- input rotor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
- F16F15/129—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon characterised by friction-damping means
- F16F15/1292—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon characterised by friction-damping means characterised by arrangements for axially clamping or positioning or otherwise influencing the frictional plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/12—Pivotal connections incorporating flexible connections, e.g. leaf springs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
- F16F15/129—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon characterised by friction-damping means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Vibration Dampers (AREA)
- Fluid-Damping Devices (AREA)
Abstract
本发明涉及阻尼器技术领域，提供了一种自适应调节的旋转阻尼器，包括外壳套筒以及布置在所述外壳套筒中的内部转子，所述内部转子配置有驱动输入转子以及与所述驱动输入转子同轴布置的中央转子，当所述驱动输入转子转动时能够带动所述中央转子转动并由于所述驱动输入转子转速变化使得所述中央转子的全部或部分姿态发生变化进而使得所述中央转子与所述外壳套筒之间的阻尼发生变化。本发明创造性地提出了一种在无源条件下可实现根据转动机构的旋转速度/加速度变化实现阻尼力自适应调节的旋转阻尼器，使用纯机械结构，无需考虑液体渗漏问题，受温度影响小，耗损系数低，可靠性高。
The present invention relates to the field of damper technology, and provides an adaptively adjustable rotary damper, comprising an outer shell sleeve and an internal rotor arranged in the outer shell sleeve, wherein the internal rotor is provided with a drive input rotor and a central rotor arranged coaxially with the drive input rotor, and when the drive input rotor rotates, the central rotor can be driven to rotate, and due to the change in the speed of the drive input rotor, the posture of the entire or part of the central rotor changes, thereby causing the damping between the central rotor and the outer shell sleeve to change. The present invention creatively proposes a rotary damper that can realize adaptive adjustment of the damping force according to the change in the rotation speed/acceleration of the rotating mechanism under passive conditions, uses a purely mechanical structure, does not need to consider the problem of liquid leakage, is less affected by temperature, has a low loss coefficient, and has high reliability.
Description
Technical Field
The invention relates to the technical field of dampers, in particular to a self-adaptive adjusting rotary damper.
Background
In order to ensure the smooth unfolding of the mechanism, the torsion spring always applies larger initial torque, if no inhibition measures are taken, certain impact can be inevitably generated on the spacecraft when the mechanisms are unfolded in place, the impact can damage corresponding structures and equipment, and meanwhile, unstable speed fluctuation of the mechanisms in the unfolding process can cause vibration of the system, thereby influencing the stability and reliability of the system.
According to different energy consumption mechanisms, currently existing dampers are mainly divided into viscous dampers, eddy current dampers, viscoelastic dampers, mechanical friction dampers, magneto/electrorheological dampers, shape memory alloy dampers, piezoelectric friction dampers and the like. Most dampers can be classified into passive type and semi-active type according to different impact-inhibiting modes. The passive damper does not need external energy to drive, and generates damping force (moment) by means of the damper moving along with the mechanism, so that the passive damper has good economy and reliability. The semi-active damper only needs a small amount of energy input, and the damping force (moment) is passively generated by the damper moving along with the mechanism, but the parameters of the damper can be actively adjusted by an external energy source, so that the damping force (moment) is changed.
At present, the passive damper technology is mature, wherein the viscous damper and the vortex damper are widely applied to a spacecraft unfolding mechanism, but the existing damper has the problems of large temperature influence, liquid leakage risk, large weight, large volume and the like, the semi-active damper technology can more accurately regulate the damping, but the semi-active damper is still in a development stage at present, and the semi-active damper depends on external energy input, so that the complexity of a system is increased, and the reliability of the system is reduced.
Disclosure of Invention
In view of the shortcomings in the prior art, it is an object of the present invention to provide an adaptively tuned rotary damper.
An adaptively tuned rotary damper provided in accordance with the present invention includes a housing sleeve and an inner rotor disposed within the housing sleeve;
The inner rotor is provided with a driving input rotor and a central rotor which is coaxially arranged with the driving input rotor, when the driving input rotor rotates, the central rotor can be driven to rotate, and the whole or part of the gesture of the central rotor is changed due to the rotation speed change of the driving input rotor, so that the damping between the central rotor and the shell sleeve is changed.
Preferably, the shell sleeve comprises a fixed friction outer sleeve, and a rear end cover and a front end cover which are respectively arranged at two ends of the fixed friction outer sleeve, wherein the end part of the front end cover is a first fixed end, the end part of the shaft of the driving input rotor extends to the outer part of the rear end cover to be a second fixed end, and the first fixed end and the second fixed end are both used for being connected with a relative movement mechanism.
Preferably, the driving input rotor comprises a first arc plate and a second arc plate which are oppositely arranged, two ends of the central rotor are respectively in running fit with the magnetic damping blocks or connected through flexible pieces, the magnetic damping blocks are arranged between the first arc plate and the second arc plate, and permanent magnets are arranged on the first arc plate and/or the second arc plate, and the rotation speed of the driving input rotor changes to change the distance between the permanent magnets and the magnetic damping blocks so that the postures of the magnetic damping blocks change to change the damping between the magnetic damping blocks and the fixed friction outer sleeve.
Preferably, the magnetic damping block is provided with a contact angle, and damping change is regulated by regulating the squeezing degree between the contact angle and the fixed friction outer sleeve.
Preferably, the hinge shaft of the magnetic damping block is parallel to the axis of the rotating shaft of the driving input rotor.
Preferably, the contact angle is located at one end of the outer side face of the magnetic damping block, and the other end of the inner side face of the magnetic damping block is hinged at the corner of the central rotor.
Preferably, the two magnetic damping blocks are respectively elastically hinged at two ends of the central rotor.
Preferably, the longitudinal section of the central rotor is an hourglass-shaped structure with two triangular fixed points connected.
Preferably, the end face of the driving input rotor is provided with a plurality of slots which are arranged in a central symmetry way and balls which are positioned in the slots, one face of the central rotor, which faces the driving input rotor, is provided with a pin table which is inserted into the slots, and the balls still have a clearance which moves when the pin table is inserted into the slots, and the bottom surface of the slots is provided with a slope, so that the balls can displace in the slots due to the change of the rotating speed of the driving input rotor, thereby changing the posture of the central rotor and further changing the damping between the central rotor and the fixed friction outer sleeve.
Preferably, the notch is configured to have a tunnel in the middle and a slope connecting both sides of the tunnel, and the balls move to the slope to press the central rotor so that the posture of the central rotor changes.
Preferably, the central rotor extends circumferentially beyond a plurality of pointed formations and the pointed formations project radially outwardly of the drive input rotor rim.
Compared with the prior art, the invention has the following beneficial effects:
1. The invention creatively provides a rotary damper capable of realizing self-adaptive adjustment of damping force according to the change of the rotation speed/acceleration of a rotating mechanism under a passive condition. The friction damping is a traditional mechanical braking principle, mechanical energy is converted into internal energy through friction resistance of a contact surface, and the friction damper is widely applied in the field of mechanical engineering due to the characteristics of simple structure, strong energy consumption capability, no influence of load frequency and the like. The invention realizes self-adaptive feedback adjustment, adopts a pure mechanical structure, does not need to consider the problem of liquid leakage, has small temperature influence, low loss coefficient and high reliability.
2. The friction energy dissipation device mainly goes through two states of adhesion and sliding in operation, and the energy dissipation braking effect mainly depends on normal pressure and the friction coefficient of a contact surface. According to the invention, as the rotation angular speed of the unfolding mechanism is increased, the normal pressure of the damping block and the friction sleeve is also increased, so that the friction damping is increased, and the rotation angular acceleration is reduced.
3. Because the unfolding of the sailboard of the spacecraft is mostly low-speed rotation motion within 180 degrees of a half rotation period, a speed increasing gear mechanism is needed before a plurality of rotation dampers, especially the traditional mechanical friction dampers, are needed to amplify the fluctuation of the speed, and the structural size and the weight are greatly increased. The invention amplifies the fluctuation of the speed/speed by the action of the magnetic force between the permanent magnets and the inertia force of the device or the action of the ball extrusion force and the inertia force of the device and adjusts the speed by the change of the friction force, thereby greatly reducing the weight of the structure.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic exploded view of the structure of example 2;
Fig. 3 is a schematic structural side view of embodiment 2;
FIG. 4 is a schematic cross-sectional view of the structure in the direction I-I in FIG. 3;
Fig. 5 is a schematic view showing the internal structure of embodiment 3 in the axial direction;
FIG. 6 is a schematic view showing the disassembly of the structure of embodiment 3;
Fig. 7 is a schematic structural view of a drive input rotor and a center rotor in the axial direction of embodiment 3;
fig. 8 is a schematic view of the structure in the C-C direction in fig. 7.
The figure shows:
Rear end cap 1
Fixed friction outer sleeve 2
Driving input rotor 3
Notch 31
First arcuate plate 32
Second arc plate 33
Support frame 34
Support shaft 35
Magnetic friction damping block 4
Contact angle 41
Central rotor 5
Pin stand 51
Connecting pin 6
Front end cover 7
First bearing 8
Second bearing 9
Third bearing 10
Ball 11
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present invention.
Example 1:
The invention provides a self-adaptive rotary damper, which comprises a shell sleeve and an inner rotor arranged in the shell sleeve, wherein the inner rotor is provided with a driving input rotor 3 and a central rotor 5 which is coaxially arranged with the driving input rotor 3, when the driving input rotor 3 rotates, the central rotor 5 can be driven to rotate, and the whole or part of the posture of the central rotor 5 is changed due to the change of the rotating speed of the driving input rotor 3, so that the damping between the central rotor 5 and the shell sleeve is changed.
As shown in fig. 1, the casing sleeve includes a fixed friction outer sleeve 2, and a rear end cover 1 and a front end cover 7 respectively disposed at two ends of the fixed friction outer sleeve 2, wherein an end of the front end cover 7 is a first fixed end, an end of a shaft of the driving input rotor 3 extends to an outside of the rear end cover 1 to be a second fixed end, and the first fixed end and the second fixed end are both used for connecting a relative motion mechanism, for example, a deployment mechanism, and the relative motion mechanism can also be a relative rotation mechanism or a relative sliding mechanism, and the like, and in particular, the rotary damper in the invention can be flexibly applied to various application scenarios.
Example 2:
This embodiment is a preferable example of embodiment 1.
In this embodiment, as shown in fig. 2, the driving input rotor 3 includes a first arc plate 32 and a second arc plate 33 that are oppositely disposed, where the first arc plate 32 and the second arc plate 33 are symmetrically disposed in a center, an accommodating space is formed between the first arc plate 32 and the second arc plate 33, a first gap is formed between one end of the first arc plate 32 and one end of the second arc plate 33, a second gap is formed between the other end of the first arc plate 32 and the other end of the second arc plate 33, two ends of the central rotor 5 are respectively connected with a magnetic damping block 4, the magnetic damping blocks 4 are in running fit with the central rotor 5 or connected with the central rotor 5 through a flexible member, for example, the magnetic damping blocks 4 are hinged with the central rotor 5, the hinge shaft of the magnetic damping blocks 4 is preferably parallel to the shaft center of the driving input rotor 3, and for example, the magnetic damping blocks 4 can be turned outwards or retracted relative to the central rotor 5 under the action of an external force through connection of the flexible member, and the flexible member can be a flexible fabric, a canvas, a metal elastic bendable sheet, or the like.
Further, the central rotor 5 is arranged in the accommodating space, wherein the magnetic damping block 4 at one end of the central rotor 5 is located in the first gap, the magnetic damping block 4 at the other end of the central rotor 5 is located in the second gap, the first arc plate 32 and/or the second arc plate 33 are provided with permanent magnets, magnetic force exists between the permanent magnets and the magnetic damping block 4, the distance between the permanent magnets and the magnetic damping block 4 changes due to the change of the rotating speed of the driving input rotor 3, the posture of the magnetic damping block 4 changes due to the change of the distance, and the degree of squeezing between the magnetic damping block 4 and the inner wall of the fixed friction outer sleeve 2 changes due to the change of the posture of the magnetic damping block 4, namely, the damping between the magnetic damping block 4 and the fixed friction outer sleeve 2 changes.
Specifically, as shown in fig. 3 and 4, the magnetic damping block 4 is provided with a contact angle 41, damping change is regulated by regulating the squeezing degree between the contact angle 41 and the fixed friction outer sleeve 2, wherein the contact angle 41 is positioned at one end of the outer side surface of the magnetic damping block 4, the other end of the inner side surface of the magnetic damping block 4 is hinged at the corner of the central rotor 5, and the design of the structure ensures that the contact angle 41 has a larger space movable range when the magnetic damping block 4 rotates around the hinged end, and a larger regulating space is provided for regulating damping between the contact angle 41 and the fixed friction outer sleeve 2.
The first arc plate 32 and the second arc plate 33 are connected and fixed through the supporting frame 34, a through hole is formed in the center of the supporting frame 34 and used for allowing the supporting shaft 35 to penetrate through, the two arc plates are fixed on the supporting shaft 35 through the supporting frame 34, and the supporting shaft 35 can rotate to drive the first arc plate 32 and the second arc plate 33 to rotate simultaneously through the supporting frame 34.
In practical applications, in order to reduce the weight of the whole damper, the design of the central rotor 5 is designed to be a structure with smaller weight as much as possible on the premise of meeting the volume and the supporting strength, for example, the longitudinal section of the central rotor 5 is designed to be an hourglass structure with two triangular fixed points connected in fig. 2, and for example, the central rotor 5 can also be designed to be a partially hollowed structure.
In this embodiment, two ends of the fixed friction outer sleeve 2 are respectively connected with the rear end cover 1 and the front end cover 7 through bolts in a matching way, the front end cover 7 is connected with one of the sailboards or the antennas of the unfolding component through a preset interface to serve as a fixing piece, the driving input rotor 3 and the central rotor 5 are concentrically matched with each other through a second bearing 9, when no magnetic force is applied and the driving input rotor 3 is fixed, the central rotor 5 can freely swing in a gap range, two ends of the driving input rotor 3 are respectively matched with the rear end cover 1 and the front end cover 7 through a first bearing 8 and a third bearing 10 to enable the two ends of the driving input rotor 3 to concentrically rotate, and a part of the supporting shaft 35 of the driving input rotor 3 extending out of the rear end cover 1 is connected with the other sailboard or the antenna of the unfolding component to serve as a moving piece.
As shown in fig. 2, two ends of the central rotor 5 are further connected with two magnetic friction damping blocks 4 through a connecting pin 6 and an elastic hinge, the magnetic damping blocks 4 are provided with a pair of permanent magnets and contact angles 41 at the ends, the permanent magnets of the magnetic damping blocks 4 and the permanent magnets at the ends of the driving input rotor 3 generate interaction force, the force is balanced in a relative balance state, when the positions are relatively changed, the magnetic damping blocks 4 are subjected to unbalanced magnetic force, the contact angles 41 at the ends of the magnetic damping blocks 4 are in contact with the fixed friction sleeve 2, friction damping force is generated in the movement process, and meanwhile, the elastic hinge is adopted, so that the magnetic damping blocks 4 can be smoothly retracted when in over damping caused by contacting with the inner wall of the fixed friction sleeve 2, and the situation of excessive friction damping is reduced.
The working process and principle of the embodiment are as follows:
The shell sleeve is connected with one sailboard or antenna to be used as a fixed part, the driving input rotor 3 is connected with the other sailboard or antenna to be used as a movable part through the supporting shaft 35, when the sailboard or antenna is unfolded, the driving input rotor 3 is driven to rotate relative to the fixed friction outer sleeve 2, when the rotation angular speed of the driving input rotor 3 is constant, the relative positions of the driving input rotor 3 and the central rotor 5 are balanced under the combined action of magnetic force and contact angle 41 and friction torque of the fixed friction outer sleeve 2, when the driving input rotor 3 is accelerated in rotation, the relative positions of the driving input rotor 3 and the central rotor 5 are changed, the balance is broken, under the action of magnetic force, the magnetic damping block 4 generates a tendency of 'everting', the contact angle 41 at the end part and the friction damping sleeve 2 are increased, so that the friction damping force is increased, the magnetic damping block 4 counteracts the driving input rotor 3 to receive a reverse damping torque, so that the rotation speed is reduced, when the driving input rotor 3 is decelerated in rotation, the relative positions of the driving input rotor 3 and the central rotor 5 are changed, the relative positions of the magnetic force and the elastic hinge block 4 generates a positive angle 'under the action of the magnetic force and the elastic hinge' at the connection of the central rotor 5 and the magnetic damping block 4 are reduced, so that the friction force is reduced, and the damping force is reduced, and the friction speed is reduced.
It should be noted that, the contact angle 41 at the end of the magnetic damping block 4 and the positive pressure of the fixed friction sleeve 2 are key to the adjustment of damping force, and the positive pressure is mainly related to the relative positional relationship/motion state of the driving input rotor 3 and the magnetic damping block 4, the centrifugal force of the structure itself, and the like, so that the whole system model is simplified, the magnetic damping block 4 is subjected to stress analysis, and the expansion speed of the sailboard/antenna can be relatively stabilized on a design value by designing and adjusting the dimensional material parameters of each structure, so as to reduce speed fluctuation and impact load.
Example 3:
This embodiment is a modification of embodiment 1.
In this embodiment, as shown in fig. 5, 6, 7 and 8, a plurality of slots 31 and balls 11 located in the slots 31 are symmetrically arranged on the end face of the driving input rotor 3, the side of the central rotor 5 facing the driving input rotor 3 is provided with a pin stand 51 inserted into the slots 31, when the pin stand 51 is inserted into the slots 31, the balls 11 still have a movable gap, the bottom face of the slots 31 has a slope, so that the balls 11 can displace in the slots 31 due to the change of the rotation speed of the driving input rotor 3, thereby changing the posture of the central rotor 5, and changing the damping between the central rotor 5 and the fixed friction outer sleeve 2.
Specifically, the notch 31 is configured to have a tunnel in the middle and a slope connecting both sides of the tunnel, and the movement of the balls 11 to the slope presses the central rotor 5 to thereby change the posture of the central rotor 5. The central rotor 5 extends in the circumferential direction with a plurality of pointed structures and the outside of the pointed structures protruding to the edge of the drive input rotor 3 in the radial direction is in contact with the inner wall of the fixed friction outer sleeve 2 and the pressing force between the pointed structures and the fixed friction outer sleeve 2 is different due to the difference in the posture of the central rotor 5.
The present embodiment differs from embodiment 2in the principle of operation in that the adjustment of the damping torque in the present embodiment achieves a change in the relative position of the drive input rotor 3 and the friction damping rotor 5 by the moving pressing of the balls 11. Similarly, through the concentric cooperation of the second bearing 9, the end face of the friction damping rotor 5 is provided with a pin block 51 inserted into the notch 31 at a position corresponding to the notch 31, but a certain gap is left, in a free state, the friction damping rotor 5 swings within the limit range of the notch 31, and meanwhile, each notch 31 is provided with a ball 11 with a size slightly smaller than the gap between the notch 31 and the pin block 51, as shown in fig. 8. With the change of the rotational angular velocity or the angular acceleration, the balls 11 displace in the tunnel, and squeeze the friction damping rotor 5 at the slope, so that the relative pose of the friction damping rotor 5 is changed, and the pointed structure of the friction damping rotor 5 and the positive pressure of the fixed friction sleeve 2 are changed, and the friction damping moment is changed, and the specific mechanism of adjustment is similar to that of the rotary damper in embodiment 2, except that the acting force between magnetic poles is converted into the acting force of the balls 11 in direct contact with and squeeze between structures in the notch 31. The damper can be designed to relatively stabilize the speed of deployment of the windsurfing/antenna at a design value by adjusting the dimensional material parameters of each structure and the relative dimensions of the notches 31 and balls 11, thereby reducing speed fluctuations and impact loads.
The invention can realize self-adaptive adjustment according to the rotation angular speed and/or angular acceleration of the rotating part without energy input, control the speed according to the requirement, reduce the impact when locking in place, amplify the speed fluctuation under the low-speed condition by magnetic force or ball extrusion, thereby realizing self-adaptive feedback adjustment, and has the advantages of low temperature influence, low loss coefficient and high reliability without considering the problem of liquid leakage by using a pure mechanical structure.
In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
The foregoing describes specific embodiments of the present application. It is to be understood that the application is not limited to the particular embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the application. The embodiments of the application and the features of the embodiments may be combined with each other arbitrarily without conflict.
Claims (8)
1. An adaptively tuned rotary damper comprising a housing sleeve and an inner rotor disposed within the housing sleeve;
The inner rotor is provided with a driving input rotor (3) and a central rotor (5) which is coaxially arranged with the driving input rotor (3), when the driving input rotor (3) rotates, the central rotor (5) can be driven to rotate, and all or part of the posture of the central rotor (5) is changed due to the change of the rotating speed of the driving input rotor (3), so that the damping between the central rotor (5) and the shell sleeve is changed;
The shell sleeve comprises a fixed friction outer sleeve (2), and a rear end cover (1) and a front end cover (7) which are respectively arranged at two ends of the fixed friction outer sleeve (2), wherein the end part of the front end cover (7) is a first fixed end, the outer part of the shaft of the driving input rotor (3) extending to the rear end cover (1) is a second fixed end, and the first fixed end and the second fixed end are both used for being connected with a relative movement mechanism;
the driving input rotor (3) comprises a first arc plate (32) and a second arc plate (33) which are oppositely arranged, two ends of the central rotor (5) are respectively in running fit with the magnetic damping blocks (4) or connected through flexible pieces, the magnetic damping blocks (4) are arranged between the first arc plate (32) and the second arc plate (33), permanent magnets are arranged on the first arc plate (32) and/or the second arc plate (33), and the rotation speed of the driving input rotor (3) changes to enable the distance between the permanent magnets and the magnetic damping blocks (4) to change, so that the posture of the magnetic damping blocks (4) changes, and further the damping between the magnetic damping blocks (4) and the fixed friction outer sleeve (2) changes.
2. An adaptively adjusted rotary damper according to claim 1, characterized in that the magnetic damping block (4) has a contact angle (41) thereon, the damping variation being adjusted by adjusting the degree of pinching between the contact angle (41) and the fixed friction outer sleeve (2).
3. The adaptively adjusted rotary damper according to claim 1, wherein the hinge axis of the magnetic damping block (4) is parallel to the shaft center of the rotary shaft of the drive input rotor (3).
4. The self-adaptive rotary damper according to claim 2, wherein the contact angle (41) is located at one end of the outer side of the magnetic damping block (4), and the other end of the inner side of the magnetic damping block (4) is hinged at the corner of the central rotor (5).
5. An adaptively adjusted rotary damper according to claim 1, characterized in that two of said magnetic damping blocks (4) are respectively elastically hinged at both ends of said central rotor (5).
6. An adaptively adjusted rotary damper according to claim 1, characterized in that a plurality of centrally symmetrical notches (31) and balls (11) in the notches (31) are provided on the end face of the drive input rotor (3), the face of the central rotor (5) facing the drive input rotor (3) being provided with a pin boss (51) inserted into the notches (31) and the balls (11) still having a clearance to move when the pin boss (51) is inserted into the notches (31), the bottom face of the notches (31) having a slope so that the balls (11) are displaced in the notches (31) due to a change in the rotational speed of the drive input rotor (3) so that the attitude of the central rotor (5) can be changed so that the damping between the central rotor (5) and the fixed friction outer sleeve (2) is changed.
7. The adaptive rotary damper according to claim 6, characterized in that the slot (31) is configured with a tunnel in the middle and a ramp connecting the sides of the tunnel, the balls (11) moving to the ramp causing a compression of the central rotor (5) and thus a change of attitude of the central rotor (5).
8. The adaptive rotary damper according to claim 6, characterized in that the central rotor (5) extends circumferentially out of a plurality of pointed structures and the pointed structures protrude in radial direction outside the edges of the drive input rotor (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310026187.1A CN116181851B (en) | 2023-01-09 | 2023-01-09 | Self-adaptive adjusting rotary damper |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101067430A (en) * | 2001-11-27 | 2007-11-07 | 株式会社索密克石川 | Rotary damper, auto part having rotary damper and rotational motion assistant mechanism |
| CN103527027A (en) * | 2013-09-18 | 2014-01-22 | 陈朝朗 | Rotary damper capable of adjusting torque force |
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| US6899208B2 (en) * | 2001-12-17 | 2005-05-31 | Charles N. VanValkenburgh | Rotary damper |
| CN105626755A (en) * | 2016-02-29 | 2016-06-01 | 东南大学 | Small rotary type magneto-rheological fluid damper used for reproducing passive force sense |
| CN212407409U (en) * | 2020-09-21 | 2021-01-26 | 广州大学 | Variable-damping semi-active damper |
| CN115108048A (en) * | 2022-02-18 | 2022-09-27 | 上海电机学院 | Damping speed stabilizing mechanism for controlling unfolding speed of passive unfolding device |
| CN115045944B (en) * | 2022-07-19 | 2024-01-16 | 北京微动时空科技有限公司 | Adjustable viscous damper for spacecraft |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101067430A (en) * | 2001-11-27 | 2007-11-07 | 株式会社索密克石川 | Rotary damper, auto part having rotary damper and rotational motion assistant mechanism |
| CN103527027A (en) * | 2013-09-18 | 2014-01-22 | 陈朝朗 | Rotary damper capable of adjusting torque force |
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