阅读说明：本技术 一种有限角度输出的轴连器 (Shaft connector with limited angle output ) 是由 陶勇彬 于 2020-06-05 设计创作，主要内容包括：本发明涉及机电设备技术领域,且公开了一种有限角度输出的轴连器,包括壳体、输出轴和输入轴,所述输出轴固定连接有输入轴,所述输入轴固定连接有从动套,所述驱动柱装配于从动套的内部,所述从动套装配于壳体的内部。该有限角度输出的轴连器,通过控制驱动柱和外水轮叶之间的传动能力截断传动的输出,进而控制负载输入轴的转动角度,使得普通电机在用于有限角度输出时,变向的过程平顺,电机在反复的制动过程中受到的受害较小。其次,利用磁力变液的物理特性,通过磁力控制驱动柱和外水轮叶之间的传动能力,使普通电机具有输出恒定转矩的能力,减少电机使用和改造成本,并且,该轴连器还具有在输出轴静止时输出转矩的能力。(The invention relates to the technical field of electromechanical equipment and discloses a shaft connector with limited angle output, which comprises a shell, an output shaft and an input shaft, wherein the output shaft is fixedly connected with the input shaft, the input shaft is fixedly connected with a driven sleeve, a driving column is assembled inside the driven sleeve, and the driven sleeve is assembled inside the shell. This axle connector of limited angle output cuts driven output through the transmission ability between control drive column and the outer water wheel piece, and then the turned angle of control load input shaft for when ordinary motor is being used for limited angle output, the process of diversion is smooth-going, and the damage that the motor received at the braking in-process that relapses is less. Secondly, by utilizing the physical characteristics of the magnetic rheological fluid and controlling the transmission capacity between the driving column and the outer water wheel blade through magnetic force, the common motor has the capacity of outputting constant torque, the use and reconstruction cost of the motor is reduced, and the shaft connector also has the capacity of outputting torque when the output shaft is static.)

1. The utility model provides a shaft coupling of limited angle output, includes casing (1), output shaft (2) and input shaft (3), its characterized in that: output shaft (2) fixedly connected with input shaft (3), input shaft (3) fixedly connected with driven sleeve (4), driving post (5) assemble in the inside of driven sleeve (4), driven sleeve (4) assemble in the inside of casing (1), be equipped with between driving post (5) and outer water wheel piece (6) and fill out the liquid chamber that is full of magnetorheological suspensions, the internal surface of driving post (5) is equipped with interior water wheel piece (7) that are promoted by liquid, the surface of outer water wheel piece (6) is equipped with magnet (8) that promote liquid, the both sides terminal surface of casing (1) all is equipped with controllable magnet (8) of magnetic force size, be equipped with corner sensor (9) that are used for real-time detection turned angle on output shaft (2).

2. A limited angle output shaft coupling as defined in claim 1, wherein: the outer water wheel blade (6) and the inner water wheel blade (7) are both semi-elliptic cylindrical surfaces, the circle centers of the outer water wheel blade (6) and the inner water wheel blade (7) are positioned on the same side, and the end surfaces of the outer water wheel blade (6) and the inner water wheel blade (7) are made of non-magnetic-isolation materials.

3. A limited angle output shaft coupling as defined in claim 1, wherein: magnet (8) include (8a) fixed mounting (8a) at casing (1) both ends and twine (8b) on (8a), (8a) be with from the circle ring shape of liquid chamber coincidence between cover (4) and the drive post (5), the magnetic force of (8a) satisfies the moment requirement that makes the load, (8b) and controller electric connection.

4. A limited angle output shaft coupling as defined in claim 1, wherein: the rotation angle sensor (9) comprises an inner ring (91) mounted on the output shaft (2) and an outer ring (92) mounted on the housing (1), the inner ring (91) is sleeved inside the outer ring (92), the inner ring (91) comprises a rotating ring (911) and clamping teeth (912), two ends of the rotating ring (911) are movably connected with the shell (1) through bearings, the latch (912) is arranged on the outer wall of the output shaft (2), the rotating ring (911) is provided with an electromagnetic control electronic pin (913), the outer wall of the rotating ring (911) is provided with an induction magnet (914), the outer ring (92) comprises a fixed ring (921), the fixing ring (921) is arranged on the shell (1) and is coaxial with the output shaft (2), the inner wall of the fixing ring (921) is provided with an induction coil (922) for inducing the magnetic force, the outer ring (92) is provided with a reset piece (923) which drives the swivel (911) to rotate and reset.

5. A limited angle output shaft coupling as defined in claim 1, wherein: the rotating ring (911) is provided with a reset ring (915) which generates suction with the reset piece (923), the section of the reset ring (915) is in a semicircular shape with the radius smoothly increased, and the point with the largest radius corresponds to the induction magnet (914).

Background

With the development of science and technology, a vitter motor with a special motion form and special performance is generated to meet the increasing demand of an automatic control system. In some control systems, as an output or intermediate link, a motor that oscillates back and forth about an axis within a limited angular range is required.

In order to adapt to the motions, a limited-rotation-angle torque motor is provided, the manufacturing process and the control technology of the limited-rotation-angle torque motor are relatively complex, the cost is relatively high, in reality, a common direct-current motor is still used in some scenes, a valve is opened/closed through means of pressure conditions, optical tracking and the like, or the limited-rotation-angle motion is realized through a special limiting structure, the severe jumping of an electric brush is caused by the reciprocating swing of a rotor in the process, the service life of the motor is shortened, and in addition, the problems of complex overall structure, large inertia, low repeatability and the like exist.

In addition, some precise control processes have higher requirements on the magnitude of the output torque, for example, the control of a robot joint, the uncontrollable output torque of a motor also means the uncontrollable output torque of the robot, and a common motor cannot meet the application conditions in the scene.

Disclosure of Invention

Aiming at the defects of the background technology, the invention provides the technical scheme of the shaft coupler with limited angle output, so that the common motor has the advantages of angle limitation and limited torque control, wide applicability, low cost and the like, and the problems provided by the background technology are solved.

The invention provides the following technical scheme: the utility model provides a shaft connector of limited angle output, includes casing, output shaft and input shaft, output shaft fixedly connected with input shaft, input shaft fixedly connected with driven cover, the drive post assembles in the inside of driven cover, the driven cover assembles in the inside of casing, be equipped with the liquid chamber of filling with magnetorheological suspensions between drive post and the outer water wheel piece, the internal surface of drive post is equipped with the interior water wheel piece that is promoted by liquid, the surface of outer water wheel piece is equipped with the magnet that promotes liquid, the both sides terminal surface of casing all is equipped with the controllable magnet of magnetic force size, be equipped with the corner sensor who is used for real-time detection turned angle on the output shaft.

Preferably, the outer water wheel blade and the inner water wheel blade are both semi-elliptic cylindrical surfaces, the circle centers of the outer water wheel blade and the inner water wheel blade are positioned on the same side, and the end surfaces of the outer water wheel blade and the inner water wheel blade are made of non-magnetic-isolation materials.

Preferably, the magnet comprises (a) and (b) wound on (a), the (a) is fixedly installed at two ends of the shell and is in a circular ring shape overlapped with a liquid cavity between the driven sleeve and the driving column, the magnetic force of the (a) meets the requirement of a moment for enabling a load, and the (b) is electrically connected with the controller.

Preferably, the corner sensor is including the inner ring of assembly on the output shaft and the outer loop of assembly on the casing, the inside of outer loop is located to the inner ring cover, the inner ring includes change and latch, and bearing and casing swing joint are passed through at the both ends of change, the outer wall of output shaft is located to the latch, be equipped with electromagnetic control's electron pin on the change, the outer wall of change is equipped with the response magnet, the outer loop is including solid fixed ring, the casing is located to the fixed ring and with the output shaft coaxial line, gu fixed ring's inner wall is equipped with the induction coil of response magnetic force size, be equipped with the rotatory piece that resets of drive change on the outer loop.

Preferably, the rotating ring is provided with a reset ring which generates suction with the reset piece, the cross section of the reset ring is a semicircle with a smoothly increased radius, and the point with the largest radius corresponds to the induction magnet.

The invention has the following beneficial effects:

1. this axle connector of limited angle output cuts driven output through the transmission ability between control drive column and the outer water wheel piece, and then the turned angle of control load input shaft for when ordinary motor is used for limited angle output, its diversion process is more smooth-going, and the damage that the motor received at the braking in-process that relapses is less, guarantees its life and reliability. Meanwhile, the repeated precision of the direction change is high, and the whole body is more controllable.

2. The shaft connector of this limited angle output utilizes the physical characteristic of magnetic force variable liquid, through the transmission ability between magnetic control drive post and the outer water wheel piece, makes ordinary motor have the ability of output constant torque, reduces the motor and uses and reform transform the cost, and on the other hand, this shaft connector still has the ability of output torque when the output shaft is static, and the motor normal rotation this moment can not overload and overheat.

Drawings

FIG. 1 is an exploded view of the present invention;

FIG. 2 is a schematic diagram of a control structure according to the present invention;

FIG. 3 is a schematic view of the driving column and the external water wheel blade of the present invention;

FIG. 4 is a schematic view of a magnetic structure according to the present invention;

FIG. 5 is a schematic structural diagram of an end face of a rotation angle sensor according to the present invention;

fig. 6 is a side view of the rotation angle sensor of the present invention.

In the figure: 1. a housing; 2. an output shaft; 3. an input shaft; 4. a driven sleeve; 5. a drive column; 6. an external water wheel blade; 7. internal water wheel blades; 8. a magnet; 9. a rotation angle sensor; 91. an inner ring; 911. rotating the ring; 912. Clamping teeth; 913. an electronic pin; 914. an induction magnet; 915. a reset ring; 92. an outer ring; 921. a fixing ring; 922. an induction coil; 923. a reset member.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, a shaft coupler with limited angle output comprises a housing 1, an output shaft 2 and an input shaft 3, wherein the housing 1 is provided with a front end cover and a rear end cover, the output shaft 2 penetrates through the rear end cover of the housing 1 to be in transmission connection with the input shaft of a load, the input shaft 3 penetrates through the front end cover of the housing 1 to be in transmission connection with the output shaft of a motor, the output shaft 2 is fixedly connected with the input shaft 3, the input shaft 3 is fixedly connected with a driven sleeve 4, a driving column 5 is assembled in the driven sleeve 4, the driven sleeve 4 is assembled in the housing 1, the output shaft 2, the input shaft 3, the driven sleeve 4 and the driving column 5 are coaxially arranged and sleeved with bearings, a liquid cavity filled with liquid transformation liquid is arranged between the driving column 5 and an outer water wheel blade 6, an inner water wheel blade 7 pushed by the liquid is arranged on the inner surface of the driving magnetic current, the interval between the inner water wheel blade 7 and the magnet 8 is proper and does not interfere, the end faces of two sides of the shell 1 are respectively provided with the magnet 8 with controllable magnetic force, the synonym magnetic poles of the magnets 8 on the two sides are right opposite, the projection of the magnet 8 completely covers the gap between the driven sleeve 4 and the driving column 5, the magnetic field between the right synonym magnetic poles is approximately uniform, the realization of control is convenient, the output shaft 2 is provided with a corner sensor 9 for detecting the rotating angle in real time, the corner sensor 9 detects the rotating angle of an output angle, when the angle reaches a target value, the controller controls the magnetic force of the magnet 8, and then the viscosity of the magnetorheological fluid is changed, so that no transmission, elastic transmission and approximate rigid transmission are realized between the driven sleeve 4 and.

Referring to fig. 3, the outer water wheel blade 6 and the inner water wheel blade 7 are both semi-elliptic cylindrical surfaces, so that resistance with liquid is reduced, and load output caused by water resistance when the transmission is not performed is reduced, on the other hand, the two sides are symmetrical and are suitable for forward and reverse rotation, matching surfaces of the outer water wheel blade 6 and the inner water wheel blade 7 are subjected to sealing treatment, circle centers of the outer water wheel blade 6 and the inner water wheel blade 7 are located on the same side, so that liquid flows more smoothly, the resistance when the liquid is in a liquid state is further reduced, end faces of the outer water wheel blade 6 and the inner water wheel blade 7 are made of non-magnetic materials, and the magnet 8 is located outside the outer water wheel blade 6 and the inner water wheel blade 7, so that sealing is not affected.

Referring to fig. 4, the magnet 8 includes 8a fixedly installed at two ends of the housing 1 and 8b wound on the 8a, the 8a is a circular ring shape coinciding with a liquid cavity between the driven sleeve 4 and the driving column 5, the magnetic force of the 8a meets the torque requirement of the load, the 8b is electrically connected with the controller, the magnetorheological fluid is in a state of highest shear yield strength by using the permanent magnet when the power is not turned on, the energy consumption for manufacturing the magnetic field is reduced, and when the magnetic field needs to be reduced, the magnetic field is reduced or reduced to zero by using the 8b to apply a reverse magnetic field, so that the fluidity of the magnetorheological fluid is changed.

Referring to fig. 5, the rotation angle sensor 9 includes an inner ring 91 mounted on the output shaft 2 and an outer ring 92 mounted on the housing 1, the inner ring 91 is sleeved inside the outer ring 92, the inner ring 91 includes a rotating ring 911 and a latch 912, two ends of the rotating ring 911 are movably connected to the housing 1 through bearings, the latch 912 is disposed on an outer wall of the output shaft 2, the rotating ring 911 is provided with an electromagnetic control electronic pin 913, the electronic pin 913 and the latch 912 cooperate to enable the rotation angle sensor 9 to rotate along with the output shaft 2, the outer wall of the rotating ring 911 is provided with an induction magnet 914, the outer ring 92 includes a fixing ring 921, the fixing ring 921 is disposed on the housing 1 and is coaxial with the output shaft 2, an induction coil 922 for inducing magnetic force is disposed on an inner wall of the fixing ring 921, the position change of the induction magnet 914 is determined by the induced magnetic force change, so as to induce the rotation angle of the output shaft, the e-pin 913 retracts and the reset member 923 drives 811 to rotate to reset.

Wherein, the piece 923 that resets is magnet, is equipped with the reset ring 915 that produces suction with the piece 923 that resets on the swivel 911, and the cross-section of reset ring 915 is the semicircle that the radius increases smoothly, and the biggest point of radius corresponds with the response magnet 914, and the inhomogeneous size that makes suction of utilizing the inhomogeneous of reset ring 915 is inhomogeneous, and then makes the inner ring 91 reset under the effect of magnetic force.

The working principle and the working process of the invention are as follows:

during transmission, under the action of 8a magnetic force, magnetorheological fluid in a liquid cavity between the driving column 5 and the outer water wheel blades 6 is changed into approximately fixed fluid, the driving column 5 rotates to drive the outer water wheel blades 6 to rotate, power is output through the output shaft 2, the rotation angle of the output shaft 2 is sensed through the rotation angle sensor 9, when the angle reaches a preset value, a reverse magnetic field is applied to 8b, the magnetorheological fluid is changed into low-viscosity liquid, the motor reversely rotates or the input shaft 3 reversely rotates under the action of the commutator, the transmission capacity is weak due to the fact that the liquid is low in viscosity at the moment, the transmission capacity is weak, the electronic pin 913 cannot drive load to reversely rotate while having certain reverse braking torque, the electronic pin 913 retracts at the moment, the rotating ring 911 resets under the action of the resetting piece 923, and preparation is made.

When the limited torque needs to be output, the transmission capacity between the driving column 5 and the outer water wheel blade 6 is changed by changing the viscosity of the magnetic rheological fluid between the driving column 5 and the outer water wheel blade 6, so that the torque output by the motor is controlled, and the overlarge torque output in a specific occasion is avoided.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.