WO2022137321A1 - クラッチを制御するシステム - Google Patents
クラッチを制御するシステム Download PDFInfo
- Publication number
- WO2022137321A1 WO2022137321A1 PCT/JP2020/047844 JP2020047844W WO2022137321A1 WO 2022137321 A1 WO2022137321 A1 WO 2022137321A1 JP 2020047844 W JP2020047844 W JP 2020047844W WO 2022137321 A1 WO2022137321 A1 WO 2022137321A1
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- WO
- WIPO (PCT)
- Prior art keywords
- clutch
- thrust member
- power
- mover
- phase difference
- Prior art date
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- 230000004907 flux Effects 0.000 claims abstract description 12
- 230000004044 response Effects 0.000 claims abstract description 6
- 230000033001 locomotion Effects 0.000 claims description 19
- 230000007246 mechanism Effects 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 230000008878 coupling Effects 0.000 abstract description 2
- 238000010168 coupling process Methods 0.000 abstract description 2
- 238000005859 coupling reaction Methods 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 12
- 238000010586 diagram Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000006399 behavior Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000009699 differential effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Classifications
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/06—Control by electric or electronic means, e.g. of fluid pressure
- F16D48/064—Control of electrically or electromagnetically actuated clutches
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D27/00—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor
- F16D27/02—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with electromagnets incorporated in the clutch, i.e. with collecting rings
- F16D27/04—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with electromagnets incorporated in the clutch, i.e. with collecting rings with axially-movable friction surfaces
- F16D27/06—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with electromagnets incorporated in the clutch, i.e. with collecting rings with axially-movable friction surfaces with friction surfaces arranged within the flux
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D27/00—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor
- F16D27/14—Details
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2300/00—Special features for couplings or clutches
- F16D2300/18—Sensors; Details or arrangements thereof
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/10—System to be controlled
- F16D2500/102—Actuator
- F16D2500/1021—Electrical type
- F16D2500/1022—Electromagnet
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/30—Signal inputs
- F16D2500/302—Signal inputs from the actuator
- F16D2500/3026—Stroke
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/30—Signal inputs
- F16D2500/302—Signal inputs from the actuator
- F16D2500/3028—Voltage
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/70—Details about the implementation of the control system
- F16D2500/704—Output parameters from the control unit; Target parameters to be controlled
- F16D2500/70402—Actuator parameters
- F16D2500/7042—Voltage
Definitions
- the following disclosure relates to a system that controls clutch engagement and disengagement, and relates to a system that can determine clutch engagement and disengagement without requiring a special mechanism.
- Rotating machines used in vehicles often utilize clutches to selectively operate and deactivate their functions.
- the so-called lockup differential has a built-in dog clutch, and normally the dog clutch is decoupled to allow differential between output shafts, and when the dog clutch is engaged by an external actuator, the differential is locked.
- Actuators such as hydraulic cylinders, cam mechanisms using motors, and solenoid actuators are used to operate the clutch built into the rotating machine from the outside.
- the solenoid actuator has been devised so that it can be coaxial with the rotating machine, is compact, and can handle the whole as a whole.
- the clutch may fail to engage under rare conditions such as the clutch teeth being in an unsuitable positional relationship for meshing. Further, even if the actuator is reversed, the clutch teeth may temporarily stick to each other due to the viscosity or magnetization of the lubricating oil, and the disconnection may be delayed. That is, turning on / off the switch of the actuator and connecting / disconnecting the clutch do not always correspond to each other. Often an additional device is needed to detect whether the clutch is engaged or not to prevent the rotating machine from causing unexpected movements.
- Patent Documents 1 to 3 disclose related techniques.
- the detection device requires the addition of a structural element such as a pull switch on the carrier side.
- a structural element such as a pull switch on the carrier side.
- the elements on the carrier side need to be installed independently of the differential body, which makes the vehicle assembly work troublesome.
- the state of the actuator is electrically detected by applying a pulse current to the solenoid and detecting the response.
- the pulsed currents themselves generate a driving force, which causes the actuator to mechanically or acoustically make noise, and in extreme cases its operation is impaired. It can be stable.
- the system that controls the clutch is a thrust member that is drivenly coupled to the clutch and is axially movable between a first position that disengages the clutch and a second position that connects the clutch, and an electric current.
- a solenoid that generates electric current in response to the input of electric current, and a mover that is arranged to receive the electric current and is drivenly coupled to the thrust member, and causes motion by the electric current to cause the first position and the first position.
- FIG. 1 is a block diagram of a vehicle including a system for controlling a clutch.
- FIG. 2 is a partially exploded perspective view of a combination of a system based on an example and a lockup differential.
- FIG. 3 is a cross-sectional elevation view of the combination of the system and the lockup differential, taken from lines III-III of FIG.
- FIG. 4 is a cross-sectional elevation view of the combination of the system and the free running differential.
- FIG. 5 is a cross-sectional elevation view of a combination of a system based on another example and a lockup differential, corresponding to FIG.
- FIG. 6 is a schematic waveform diagram illustrating the phase difference of the current with respect to the voltage, and is a diagram showing the influence of the position of the mover on the phase difference.
- FIG. 7 is a flowchart illustrating a process in which the controller determines the position of the thrust member based on an example.
- FIG. 8 is a block diagram of an electric circuit that converts a
- the axis means the central axis of the actuator and usually also coincides with the rotating body and the rotating axis of the shaft connected to the rotating body. It should be noted that the drawings are not necessarily shown to the exact scale and therefore the dimensional relationships between them are not limited to those shown.
- the system disclosed below generally uses the change in the inductance of the solenoid due to the movement of the mover to detect the position of the thrust member coupled to the mover, and thus whether the clutch is engaged or disconnected. judge.
- Such a system can be used for the purpose of controlling a clutch used in combination with any rotary machine driving a vehicle, and in particular, connecting and disconnecting the clutch from outside the rotary machine to control its function. It can be used for the purpose.
- the clutch When the clutch is engaged, the torque that drives the vehicle is transmitted through the clutch, and when it is disengaged, it is disengaged.
- the vehicle comprises an engine or motor 31, and the torque generated by the engine or motor 31 is transmitted to the differential 3 via the transmission 33, transfer 35, and propeller shaft 37 and distributed to the rear axle 43.
- the transfer 35 may distribute torque to the front axle 41 (4WD vehicle), or torque may be distributed only to the front axle 41 from the transmission 33 via the front differential (FF vehicle).
- FF vehicle front differential
- the differential 3 often incorporates a dog clutch 10 to control its operation, which is externally driven by an appropriate actuator 1.
- FIGS. 2, 3 and 5 are examples in combination with a so-called lockup differential
- FIG. 4 is an example in combination with a so-called free running differential.
- the differential 3 is a rotating body having a clutch 10 inside, which is capable of rotating T around the axis X.
- the differential 3 includes a differential gear set 21 coupled to the case 27, and the differential gear set 21 includes side gears 23 and 25, which are coupled to the rear axle 43, respectively. That is, the differential gear set 21 acts as an intermediary for distributing the torque received by the case 27 to the side gears 23 and 25 while allowing differential.
- FIG. 3 illustrates a bevel gear type, but of course, other types such as a face gear type and a planetary gear type may be used.
- the clutch member 11 capable of transmitting torque from the case 27 is movable in the axial direction
- the side gear 23 is provided with, for example, a clutch tooth and can be connected to the clutch member 11, and the combination of the clutch member 11 and the clutch tooth is
- the clutch 10 is configured.
- the actuator 1 drives the clutch member 11 and the clutch 10 is engaged
- the side gear 23 temporarily integrates with the case 27 to transmit torque.
- the other side gear 25 cannot be differentially made with respect to the side gear 23, so that the differential 3 is in a so-called diff lock state in which the differential action is lost.
- the differential 3 differentially distributes the torque received by the case 27 to both axles 43.
- the case of the differential 3 is divided into an outer case 27 that receives torque and an inner case 29 that is coaxial with the outer case and is relatively rotatable.
- the differential gear set 21 is coupled to the inner case 29, and for example, one end of the inner case 29 is provided with dog teeth to form the clutch 10.
- the actuator 1 engages the clutch 10
- torque is transmitted from the outer case 27 to the inner case 29, and is further differentially distributed to both axles via the differential gear set 21.
- the differential gear set 21 does not receive torque from the outer case 27, and both axles 43 are free from the power system.
- the actuator 1 includes a hollow shaft motor 5 that causes a rotary motion R around the axis X in the mover 13, and a conversion mechanism that converts the rotary motion R into a linear motion in the axial direction. 7 and.
- the conversion mechanism 7 includes a thrust member 9 provided with a cam surface 9c, and outputs the rotational motion R as a linear motion of the thrust member 9 in the direction along the axis X.
- the thrust member 9 is in contact with or coupled to the clutch member 11, disengages the clutch 10 at least at the most retracted position, and engages the clutch 10 at least at the most advanced position.
- the actuator 1 may be configured to directly cause a linear motion in the mover 13.
- the actuator 1 may be configured to directly cause a linear motion in the mover 13.
- the thrust member 9 may be directly connected to or integrated with the mover 13, but some mechanism may be interposed between the thrust member 9 and the mover 13. Similar to the above, the clutch 10 is engaged / disconnected in response to the advance / retreat of the thrust member 9.
- the system is used in combination with a differential that distributes torque to the rear axle 43, but of course it can also be combined with a differential that distributes torque to the front axle 41.
- the system can be combined with a wide range of rotating machines including dog clutches, not limited to differentials, as described above, examples of which are transmission 33, transfer 35, coupling devices and the like.
- clutches are so-called dog clutches with, for example, dog teeth, but other types of clutches, such as claw clutches, and more generally, types that transmit torque by a structure that meshes with each other rather than friction will generally be available. ..
- the actuator 1 is configured so that the position of the mover 13 corresponds to the connection / disconnection of the clutch 10.
- the actuator 1 generally includes a solenoid 15 that generates a magnetic flux in response to an input of electric power, a core or a stator 17 that guides the magnetic flux, and a mover 13 that generates a rotational motion or a linear motion by the magnetic flux.
- the mover 13 is arranged so as to receive the magnetic flux, and is also drivenly coupled to the thrust member 9 to drive the mover 13. In the example shown in FIGS.
- the solenoid 15 is generally immovable together with the core or the stator 17 and only the mover 13 is movable, but only the core or the stator 17 is immovable and the solenoid 15 is movable together with the mover 13. It is also good.
- the solenoid 15 is electrically connected to the external electric circuit 51 via the cable 19.
- the electric circuit 51 may be partially or wholly incorporated in the actuator 1.
- Vehicles typically include a plurality of programmable electronic control units (ECUs) to electronically control their respective parts.
- Each ECU includes a storage device that stores commands and data, and a microcontroller that can read these from the storage device and execute commands.
- the plurality of ECUs communicate or share information with each other, for example, by communication via a so-called controlled area network (CAN).
- CAN controlled area network
- the first ECU 55 is electrically connected to the electric circuit 51 to control its function.
- the electric circuit 51 is further connected to the power supply 53, and under the control of the ECU 55, power is applied to and disconnected from the solenoid 15.
- the electric power applied to the solenoid 15 may be direct current, alternating current, pulsating current, or pulse depending on the driving principle of the actuator 1.
- the electric circuit 51 includes an oscillator, generates AC power of a specific frequency, and superimposes this on the power for driving the actuator 1.
- the superposed electric power can be sufficiently smaller than the electric power for driving so as not to affect the behavior of the mover 13. Further, the frequency can be appropriately selected so as not to affect the behavior of the mover 13 and in consideration of the convenience of separating from the electric power for driving.
- a phase difference ⁇ ref is generated in the current I 1 with respect to the voltage V in the superimposed AC power.
- the inductance of the solenoid 15 also changes according to the change in the position, and as a result, the phase difference ⁇ of the current I 2 with respect to the voltage V. Also changes.
- an appropriate bandpass filter or, in some cases, a high-pass filter or a low-pass filter
- the superimposed AC power can be easily separated from the power for driving, so that the phase difference ⁇ is further increased from there. It is also easy to detect.
- the position of the mover 13 can be determined by detecting such a change in the phase difference ⁇ . For example, when the clutch 10 is disengaged when the mover 13 is in the first position and the clutch 10 is engaged when the mover 13 is in the second position, the position of the mover 13 is changed from the change in the phase difference ⁇ . By determining whether or not the clutch 10 is present, it can be determined whether or not the clutch 10 is disengaged or engaged.
- the inductance changes only by the movement of the mover 13, but instead of or in addition to this, the movement of another member may change the inductance.
- a change in inductance may occur when one magnetic member interlocking with the mover 13 comes into contact with or separates from another magnetic member.
- the change in the inductance of the solenoid 15 is used for the determination, but instead, an electromagnetic coil independent of the solenoid 15 may be used. As long as the inductance of the electromagnetic coil changes according to the movement of the thrust member 9, the clutch member 11, or any of the movable members coupled thereto, it can be used for determination. Further, instead of the change in inductance, the change in capacitance may be used.
- the ECU 55 determines whether the clutch 10 is disengaged or engaged according to an algorithm such as the flowchart illustrated in FIG. 7.
- the ECU 55 sets an appropriate reference value for determination (step S1).
- the ECU 55 detects the phases of the voltage and the current, respectively, and calculates the phase difference (step S3).
- the ECU 55 further calculates the difference between the phase difference and the reference value (step S5), and determines whether the calculated difference is less than 0 or greater than or equal to 0 (step S7). For example, when the difference is less than 0 (that is, when the phase difference is smaller than the reference value), it is determined that the clutch is disengaged (step S9), and when it is 0 or more (that is, the phase difference is larger than the reference value). In the case of), it is determined that the clutch is engaged (step S11).
- the ECU 55 determines whether or not the detection should be continued based on, for example, a request from another ECU (step S13). If the state should be continued, the ECU 55 returns to the stage of detecting the phase (step S3). Alternatively, since the inductance can change according to the change in the temperature of the actuator 1, the reference value may be reset (step S1). The time change of the reference value may be stored in the memory in advance, or it may be stored in the memory in advance in the form of a table of compensation values for parameters such as temperature, and the optimum reference value is calculated each time. You may set this. In any case, by repeating these cycles, it is possible to continuously determine whether the clutch 10 is engaged or disengaged.
- the above-mentioned determination can be made by an ECU operated by a program according to the above-mentioned algorithm, or may be an integrated circuit of a specific application designed to operate equally with the above-mentioned algorithm partially or entirely. .. In that case, the ECU 55 may be configured to communicate with the integrated circuit via CAN communication or a dedicated bus and receive a calculated value and / or a determination result.
- the comparison between the phase difference and the reference value can be performed using, for example, the circuit represented by the block diagram of FIG.
- FIG. 1 an example is shown in which the current in the electric power applied to the solenoid is converted into a potential V out and the phase is compared with the input voltage Vin applied to the solenoid.
- the input voltage may be converted into a current and the phases may be compared between the currents.
- the potential V out and the voltage V in are pulsed by being passed through a bandpass filter (or a highpass filter or a lowpass filter as described above) 63V and 63A, respectively, and then compared with 0V by the comparators 65V and 65A, respectively. Is made.
- the time difference ⁇ t between the pulses is equivalent to the phase difference ⁇ .
- the pulse taken out by the comparators 65V, 65A is input to the exclusive OR (XOR) gate 67. Since the output is an exclusive OR between pulses, it has a duty ratio proportional to the phase difference, and if it is input to the duty ratio detector 69, a potential proportional to the phase difference is output as a result.
- the potential can be directly read, quantified, and output to the ECU 55.
- the output potential may be further input to the comparator 71, compared with the reference potential Vth , and the output may be output to the ECU 55. If the reference potential Vth corresponding to the reference value is input, the output of the comparator 71 can be used as the determination value (YES: 1, NO: 0) in step S7 of FIG.
- phase detector or phase comparator that generates a voltage signal representing a phase difference between two signal inputs can be used.
- the state of the clutch can be determined from the outside by superimposing a small amount of AC power on the power for driving the clutch without requiring an additional structure.
- the superimposed power can be made smaller than the driving power, and since this is an alternating current and does not generate a driving force on average, and a high frequency that the thrust member cannot follow can be adopted.
- the superimposed electric power does not move the thrust member and affect the operation of the clutch.
- Judgment can be performed continuously as long as there is power supply, and it can be useful not only for checking the operation of the clutch but also for finding malfunctions and failures.
- the determination can be limited to when it is needed, and thus further energy efficiency may be improved.
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- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- Retarders (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
Description
Claims (4)
- クラッチを制御するシステムであって、
前記クラッチと駆動的に結合し、前記クラッチを脱連結する第1の位置と前記クラッチを連結する第2の位置との間で軸方向に可動なスラスト部材と、
電力の投入に応じて磁束を生じるソレノイドと、
前記磁束を受容するべく配置され、前記スラスト部材と駆動的に結合した可動子であって、前記磁束により運動を生じて前記第1の位置と前記第2の位置との間で前記スラスト部材を駆動する可動子と、
前記電力に交流電力を重畳して前記ソレノイドに印加する電気回路と、
前記電気回路に電気的に接続されたコントローラであって、前記重畳した交流電力において電圧に対する電流の位相差を検出し、前記検出された位相差を参照値と比較することにより、前記スラスト部材が前記第1の位置か前記第2の位置かを判定するコントローラと、
を備えたシステム。 - 前記電気回路は、前記電圧および前記電流をそれぞれパルスに変換するコンパレータと、前記パルスの間の時間差に応じた電位を生ずる検出器と、を備える、請求項1のシステム。
- 前記コントローラは、前記検出器が生ずる前記電位を利用して前記位相差を前記参照値と比較し、以って前記スラスト部材が前記第1の位置か前記第2の位置かを判定する、請求項2のシステム。
- 回転運動を軸方向の直線運動に変換する変換機構であって、前記直線運動を前記クラッチ部材へ伝達するべく前記可動子と前記スラスト部材との間に介在した変換機構をさらに備え、
前記可動子は、前記クラッチと軸を共有するように配置されて前記変換機構と結合し、前記磁束により前記軸の周りに前記回転運動をする、請求項1のシステム。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2020/047844 WO2022137321A1 (ja) | 2020-12-22 | 2020-12-22 | クラッチを制御するシステム |
CN202080108122.6A CN116685783B (zh) | 2020-12-22 | 2020-12-22 | 控制离合器的系统 |
DE112020007866.3T DE112020007866T5 (de) | 2020-12-22 | 2020-12-22 | System zur Steuerung einer Kupplung |
JP2022570802A JP7457161B2 (ja) | 2020-12-22 | 2020-12-22 | クラッチを制御するシステム |
US18/333,616 US11965565B2 (en) | 2020-12-22 | 2023-06-13 | System for controlling clutch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2020/047844 WO2022137321A1 (ja) | 2020-12-22 | 2020-12-22 | クラッチを制御するシステム |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US18/333,616 Continuation US11965565B2 (en) | 2020-12-22 | 2023-06-13 | System for controlling clutch |
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WO2022137321A1 true WO2022137321A1 (ja) | 2022-06-30 |
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PCT/JP2020/047844 WO2022137321A1 (ja) | 2020-12-22 | 2020-12-22 | クラッチを制御するシステム |
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US (1) | US11965565B2 (ja) |
JP (1) | JP7457161B2 (ja) |
CN (1) | CN116685783B (ja) |
DE (1) | DE112020007866T5 (ja) |
WO (1) | WO2022137321A1 (ja) |
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JP2004190720A (ja) * | 2002-12-09 | 2004-07-08 | Ntn Corp | 電磁式クラッチ |
JP2018096382A (ja) * | 2016-12-07 | 2018-06-21 | ジヤトコ株式会社 | 噛合式係合装置 |
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US4472846A (en) * | 1981-09-01 | 1984-09-25 | B-W Health Products, Inc. | Coupling system for the motor drive in an adjustable motorized hospital bed |
US5481187A (en) * | 1991-11-29 | 1996-01-02 | Caterpillar Inc. | Method and apparatus for determining the position of an armature in an electromagnetic actuator |
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- 2020-12-22 CN CN202080108122.6A patent/CN116685783B/zh active Active
- 2020-12-22 DE DE112020007866.3T patent/DE112020007866T5/de active Pending
- 2020-12-22 JP JP2022570802A patent/JP7457161B2/ja active Active
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2023
- 2023-06-13 US US18/333,616 patent/US11965565B2/en active Active
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CN116685783B (zh) | 2024-05-07 |
JP7457161B2 (ja) | 2024-03-27 |
US20230323923A1 (en) | 2023-10-12 |
CN116685783A (zh) | 2023-09-01 |
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