JP3445855B2 - Rotation transmission device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotation transmission device used for switching between transmission and interruption of driving force on a drive path of a vehicle.

[0002]

2. Description of the Related Art In a four-wheel drive vehicle, when a vehicle turns a tight corner such as a paved road in a state where the four wheels are directly connected, a phenomenon occurs as if a brake is applied due to a difference in turning radius between the front and rear wheels.

As a means for eliminating this braking phenomenon, the present applicant has filed Japanese Patent Application No. 4-173064 (JP-A-6-178).
No. 53), a rotation transmission device having a mechanical clutch mechanism is connected to a front differential, and free running of the clutch mechanism is used to transmit a driving force to the front wheels according to a rotation difference between the front and rear wheels. I am proposing something to switch between.

In the proposed device, the four wheels are driven directly by the meshing of the clutch mechanism during driving, so that only the required torque can be transmitted to the front wheels, and even on a bad road or a road surface with a low friction coefficient, the four wheels can be driven. It is possible to exert strong running performance by wheel drive.

[0005]

However, in the structure utilizing the free running of the clutch mechanism as described above, tires having different diameters are mounted on the front and rear wheels, or the tire diameter of the rear wheel is set larger than the tire diameter of the rear wheel depending on the tire pressure. When the tire diameter of the front wheel becomes large, even if the rear tire makes one rotation, the rotation of the front wheel becomes one rotation or less, and the difference in rotation causes slipping of the rear wheel, resulting in a braking phenomenon. That is, in order to prevent the wear of the tire and the reduction of the fuel consumption due to such a braking phenomenon, it is necessary to frequently manage the tire diameter.

Further, in the method for avoiding the tight corner braking phenomenon in the above-mentioned rotation transmission device, the phenomenon that the rotation speed of the front wheels becomes faster than that of the rear wheels during turning of the vehicle, that is, the output rotation speed of the clutch mechanism is the input rotation speed We use the phenomenon that free running occurs when the number exceeds.

However, in an FF-based four-wheel drive vehicle that mainly drives front wheels, since a front propeller shaft does not exist, a rotation transmission device is connected to the rear propeller shaft. In that case, during rotation of the vehicle, Since the input side (engine side) needs to rotate faster than the output side (rear wheel side), the rotation transmission device cannot be used. Therefore, the vehicle to which the rotation transmission device can be mounted is limited to a four-wheel drive vehicle mainly for rear wheel drive.

Therefore, the present invention solves the above-mentioned problems, and normally can rotate freely between the input side and the output side to the left or right. It is an object of the present invention to provide a rotation transmission device that can realize four-wheel drive of direct connection by directly connecting.

[0009]

In order to solve the above problems, the present invention incorporates a large diameter retainer and a small diameter retainer between a drive member and a driven member that are rotatably fitted inside and outside ,
Fix one cage to the drive member and hold the other
Rotatably supporting the container and the pockets formed on both the cages.
The relative rotation of the large diameter cage and the small diameter cage
Incorporate engaging element which engages with the drive member and a driven member, between the two <br/> cage and drive member, both being maintained at a neutral position not engaging the engaging zygote the drive member and a driven member A switch spring for rotating the retainer together with the driving member is provided, and
Between the existing cage and the driven member, the rotation
Co when freely coupling disconnecting the cage and the driven member of the resident
, Both cages are rotated relative to each other at the time of connection
A coupling means for engaging the material and the driven member is provided.
The step is secured to the rotatable retainer and retained.
A connector that can move in the axial direction of the holder, and the connector that drives the connector.
It is composed of an electromagnet that is attracted to the material and
The switch for changing the operation is an electric switch for remote operation.
The adopted structure was adopted.

[0010] The second means of the present invention is to connect the control means having a calculation function to the electrical switch, the control means is output a rotational speed applied to the driving member input speed, the driven member When the number of revolutions is the output number of revolutions, and Z is a variable that can be arbitrarily set above zero,

[Equation 2] When the above relationship is established, the electric switch is switched in the direction in which the retainer and the driven member are connected.

[0011]

[0012]

[0013]

In the above structure, the drive member is connected to the propeller shaft, the driven member is connected to the driven-side differential, and when the vehicle travels with the rotatable retainer and the driven member separated, a large elastic member is used. The engagement is maintained in the neutral position by holding the diameter retainer and the small diameter retainer, and there is no torque transmission from the drive member to the driven member. Therefore, four-wheel drive is not performed, and the driven wheels freely rotate in the forward and reverse directions with respect to the drive system of the vehicle.

Further, when the rotatable retainer and the driven member are coupled by the coupling means, the large-diameter retainer and the small-diameter retainer are opposed to each other.
Of the driven member and driven member
The driven member and the driving member are integrally rotated by being engaged with each other. Therefore, the driven wheels are directly connected to the drive system of the vehicle, and the front and rear wheels are directly connected to each other, resulting in a four-wheel drive state.

On the other hand, in the second means, when the variable Z is set to 0 in the above control formula, the driven member and the retainer are connected to each other to directly drive four-wheel drive, and Z is set to a large value. Then, the drive member and the driven member are always separated from each other, and the two-wheel drive state is maintained.

Further, when Z is set to a small value of 0 or more, the relationship between the input rotation speed and the output rotation speed is changed due to slipping of the driving side wheels during traveling, so that the two-wheel drive is switched to the four-wheel drive. Therefore, it is possible to appropriately deal with slip and spin of the vehicle.

[0017]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 8 show a rotation transmission device according to the first embodiment.

In this rotation transmitting device A, a shaft 2 which is a driving member is rotatably fitted inside an outer ring 1 which is a driven member, and an end portion of the shaft 2 is provided with a front or a rear, as will be described later. An input ring 3 connected to the propeller shaft is connected.

On the inner diameter surface of the outer ring 1 and the outer diameter surface of the shaft 2,
As shown in FIGS. 1 and 3, concentric cylindrical surfaces 10 and 11 are formed, and a large-diameter cage 12 and a small-diameter cage 13 are incorporated between the cylindrical surfaces 10 and 11.

The large diameter cage 12 has an extension arm 1 at the rear end.
4 is integrally formed, and its extension arm 14 is rotatably supported with respect to the outer ring 1 and the shaft 2 by the guide of the bearing.

Further, the small-diameter cage 13 has a bent portion 15 which is bent toward the inner diameter side at the front end thereof, and a crimp spring 16 made of a disc spring is provided between the bent portion 15 and the retaining ring 17. The small-diameter retainer 13 is press-fitted and fixed to the shaft 2 by the frictional force generated by the pressing force of the crimp spring 16.

As shown in FIGS. 3 and 4, a plurality of pockets 18, 19 are formed in the peripheral surfaces of the large-diameter cage 12 and the small-diameter cage 13 so as to face each other in the radial direction. , 19, the sprags 4 as the engaging elements are incorporated.

The sprag 4 is formed with bilaterally symmetrical arc surfaces 5 and 6 having different centers of curvature on the outer diameter side and the inner diameter side, respectively, and when tilted in both left and right directions by a predetermined angle, both cylindrical surfaces 10 and 11 are formed. And the outer ring 1 and the shaft 2 are integrated with each other.

Further, slits 7 and 8 are formed on the peripheral surfaces of the large-diameter cage 12 and the small-diameter cage 13 so as to penetrate in the radial direction, and the slits 7 and 8 are C-shaped ring-shaped switches. Both ends of the spring 9 are engaged. The switch spring 9 is set in a state of being contracted in the circumferential direction, and both ends are pressed against the end faces of the slits 7 and 8 of the large-diameter cage 12 and the small-diameter cage 13, and are attached by the spring force. A circumferential force is applied to the containers 12 and 13. Due to this force, the cages 12 and 13 are in phase with each other so that the pockets 18 and 19 are continuous in the radial direction, as shown in FIG. 5, and the sprag 4 does not engage the outer ring 1 and the shaft 2 in a neutral position. Held in position. In this neutral position, there is a gap 20 between the sprag 4 and the cylindrical surfaces 10 and 11, so that the shaft 2 and the outer ring 1 can freely rotate to the left or right.

On the other hand, the rear end of the extension arm 14 of the large-diameter cage 12 is connected with a coupling means 21 for detachably coupling the large-diameter cage 12 and the outer ring 1.

As shown in FIGS. 2 and 8, the connecting means 21 is a connection in which an annular rotor 22 is fixed to the inner diameter surface of the outer ring 1 by stopping rotation, and is press-fitted and fixed to the outer peripheral portion of the large diameter cage 12. A metal connector (armature) 24 facing in parallel with the rotor 22 is slidably fitted in the ring 23. As shown in FIGS. 2 and 7, in the connector 24, the projection 25 formed on the inner diameter side is loosely engaged with the axial groove 26 provided in the coupling ring 23, and the projection 25 and the groove 26 are It is adapted to move toward and away from the rotor 22 while being rotated together with the large diameter cage 12 by meshing.

Further, an electromagnet 29 is provided facing the rotor 22 on a fixing member 28 fixed to the vehicle body via bolts 27 and the like. In this electromagnet 29, a coil 31 is wound inside a case 30 press-fitted and fixed to a fixing member 28, and a battery 33 and an electric switch 34 of an automobile are connected to the coil 31 via a lead wire 32. A direct current is applied to the coil 31 to form an electromagnet.

In the above coupling means 21, as shown in FIG.
An axial gap t ₁ is provided between the rotor 22 and the electromagnet 29 in a state where the respective parts are assembled, and the connector 24 can freely slide by the axial gap t ₂ . In this structure, as shown in FIG.
When not operated, an axial clearance t ₂ is created between the connector 24 and the rotor 22, and the two are separated and are in a state of rotation. On the other hand, as shown in FIG.
When the electromagnet 29 is actuated to N, the connector 24 slides in the axial clearance t ₂ and is attracted to the rotor 22, and the outer ring 1 passes through the rotor 22 and the connector 24 and retains the large diameter cage 12.
Mesh with and join together.

The rotation transmission device of the embodiment has the above-mentioned structure. When the rotation transmission device is mounted on an FR-based four-wheel drive vehicle mainly for rear wheel drive, as shown in FIG. The shaft 2 of the device A is connected to the front propeller shaft B via the input ring 3, and the outer ring 1 is connected to the front wheels via the front differential C.

On the other hand, in the case of mounting on an FF-based four-wheel drive vehicle mainly for front wheel drive, as shown in FIG. 9B, the shaft 2 is connected to the rear propeller shaft D and the outer wheel 1 is connected to the rear differential. Connect to the rear wheel via E.

Further, the electric switch 34 of the electromagnet 29 of the coupling means 21 is connected to a lever or the like for switching the traveling mode of the transfer so that the driver can manually switch the traveling mode, and by operation on the transfer side. The electric switch 34 can be turned on and off.

When traveling in the two-wheel drive mode with the rotation transmission device A attached as described above, the electric switch 34 is turned off and the electromagnet 29 is not operated, and the outer ring 1
And the large diameter cage 12 are separated.

In this state, as shown in FIG. 4, due to the elastic force of the switch spring 9, the large diameter cage 12 and the small diameter cage 13 are held.
Are held in phase with each other and the sprag 4 does not engage with the cylindrical surfaces 10 and 11, so that the outer ring 1 can freely rotate with respect to the shaft 2. That is, the driving force is not transmitted from both the engine and the tire to the driven wheel shaft, and the two-wheel drive traveling state is maintained.

On the other hand, when traveling in the four-wheel drive mode,
The electric switch 34 is turned on to operate the electromagnet 29,
The outer ring 1 and the large diameter cage 12 are connected.

When the vehicle travels in this state, the large-diameter cage 12 is rotated by the outer wheel 1 which rotates together with the driven wheel.
Is forcedly turned, and the phases of the large diameter cage 12 and the small diameter cage 13 are shifted as shown in FIGS. 5 and 6, so that the sprag 4 tilts and engages with the cylindrical surfaces 10 and 11, and the outer ring 1 And axis 2
Are connected together. As a result, the driven wheels and the drive system of the vehicle are directly connected to each other, and the four wheels are directly connected to the front and rear wheels.

In the directly connected four-wheel drive state, reverse input is possible from the front and rear wheels to the drive system of the vehicle, so that engine braking can be applied to all four wheels.
A large braking force can be exerted.

10 and 11 show the second embodiment.
In this embodiment, the structure of the clutch mechanism is the same as that of the first embodiment described above, but there is a difference in the structure and operation of the coupling means.

That is, the coupling means 21 of this embodiment is
A ring-shaped friction member 51 is attached to a spline 60 formed on the inner diameter surface of the outer ring 1, and a metal connector facing the spline 52 formed on the outer diameter surface of the large diameter cage 12 in parallel with the friction member 51. 50 is attached. This connector 50 has a protrusion 53 formed on the inner diameter side as shown in FIG.
Is fitted to the spline 52, and due to the fitting, it is movable in the axial direction while being prevented from rotating by the large diameter cage 12.

A resistance ring 55 is fixed to the rear end of the spline 52 of the large diameter cage 12 via a retaining ring 54, and a disc spring is formed between the resistance ring 55 and the connector 50. The elastic member 56 is incorporated. In this structure, the spring force of the elastic member 56 presses the connector 50 against the friction member 51, and the frictional force of the pressure contact portion and the friction members 51 and the connector 50 are engaged with the splines 60 and 52, thereby forming the outer ring 1 and the outer ring 1. The large diameter cage 12 is coupled in a co-rotating state.

An electromagnet 57 as a lock releasing means is attached to the tip of the fixing member so as to face the resistance ring 55. The electromagnet 57 connects a battery 58 of the vehicle and a switch 59 via a lead wire, and forms a electromagnet by passing a direct current from the battery 58 to the coil.

[0041] The coupling means 21, in the assembled state of the parts as shown in FIG. 11, between the resistor ring 55 and connector 50 can axial clearance t2, forming zygote 50 min axial clearance t2 When the electromagnet 57 is not operated, the connector 50 is crimped to the friction member 51 by the force of the elastic member 56 as shown in FIG. 11A, so that the outer ring 1 and the large diameter cage 12 can be slid. Are connected.
On the other hand, when the electromagnet 57 is actuated, the connector 50 is attracted to the resistance case 55 as shown in FIG. 11B, and an axial clearance t2 is created between the connector 50 and the friction member 51, which is large with the outer ring 1. The diameter holder 12 is separated.

In the above-described embodiment, in the two-wheel drive, contrary to the first embodiment, the electromagnet 57 is operated to release the coupling of the coupling means 21, and the outer ring 1 and the large diameter cage 12 are separated. Put in the state.

On the other hand, in the case of four-wheel drive, the operation of the electromagnet 57 is stopped, the coupling means 21 is coupled, and the outer ring 1 and the large diameter cage 12 are coupled.

12 and 13 show a third embodiment. In this embodiment, contrary to the above-mentioned embodiments,
The outer ring 1 is on the drive side, the shaft 2 is on the driven side, the large diameter cage 12 is fixed to the outer ring 1, and the small diameter cage 13 is rotatable relative to the outer ring 1 and the shaft 2.

Further, the tip ends of the small-diameter cage 13 and the large-diameter cage 12 are connected by a switch spring 9, so that both cages 12, 13 are held.
Are in phase with each other.

A connecting means 21 is provided between the shaft 2 which is a driven member and the small diameter cage 13 so as to couple the both in a detachable manner.

As shown in the figure, the connecting means 21 is a shaft.
The input shaft 2 which is inserted into the central hole of 2 and rotates together with the shaft 2.
An inner hole 61 is formed in a, a slide member 62 is fitted in the inner hole 61 so as to be movable in the axial direction, and the tip of the slide member 62 is rotated outward via a pin 64. The connectors 63, 63 are attached. Further, a solenoid 65 for moving the connectors 63, 63 and the slide member 62 in one direction is incorporated in the opening of the internal hole 61.
An elastic member 66 that urges the slide member 62 toward the solenoid 65 is incorporated into the inner end of the inner hole 61.

On the peripheral surface of the inner hole 61, windows 67, 67 for inserting the expanding connectors 63, 63 are formed to face each other in the radial direction, and one wall surface of each of the windows 67, 67. 6
7a comes into contact with the tips of the respective connectors with the connectors 63, 63 closed inward, and when the solenoid 65 extends from this state and moves the connectors, the tips of the respective connectors 63, 63 move to the wall surface 67a. It is designed to move along and spread outward.

An engagement ring 69 is press-fitted onto the inner diameter surface of the small-diameter retainer 13 facing the windows 67, 67, and each connector 6 that expands on the inner surface of the engagement ring 69.
A large number of engaging teeth 70 that mesh with the tips of the teeth 3, 63 are formed. In this structure, the engaging teeth 70 and the connector 6
3 and 63 mesh, and the connectors 63 and 63 have respective windows 67,
The shaft 2 and the small diameter cage 13 are integrally coupled by engaging with the circumferential side surface of 67.

The solenoid 65 is provided at the rear end of the shaft 2.
A slip ring 71 to which a lead wire 72 drawn from is connected is attached.

The slip ring 71 is attached to the fixing member 68 fixed to the vehicle body so as to be fitted to the outside of the shaft 2.
A radial hole 73 is formed in the radial direction toward which the pressing member 74 that moves toward and away from the slip ring 71 is fitted. A brush 75 as an electric contactor is attached to the tip of the pressing member 74, and the brush 75 is connected to the battery 76.

An operating shaft 78 of an external solenoid 77 fixed to the outer surface of the fixing member 68 is fitted into the hole 73. When the electric switch 79 of the power supply circuit of the external solenoid 77 is turned on, the operating shaft 78 is moved. The brush 75 is extended to push out the pressing member 74, and the brush 75 is moved to the slip ring 71.
It is designed to come into contact with.

In the rotation transmission device of the embodiment having the above-mentioned structure, the outer wheel 1 is connected to the front or rear propeller shaft, and the shaft 2 is connected to the driven wheel.

In the two-wheel drive mode, no current is supplied to the internal solenoid 65, and the shaft 2 and the small diameter cage 13, that is, the shaft 2 and the outer ring 1 are separated. In this case, the brush 75 and the slip ring 71 are placed in a non-contact state.

On the other hand, when the four-wheel drive mode is set, the electric switch 79 is turned on and the brush 75 and the slip ring 71 are brought into contact with each other by the operation of the external solenoid 77 to supply a current to the internal solenoid 65. As a result, the solenoid 65 is actuated to move the slide member 62, the connectors 63, 63 expand outward and mesh with the engagement ring 69, and the shaft 2 and the small diameter cage 13 are connected.

For this reason, the small diameter cage 13 and the large diameter cage 1
2 is out of phase, the sprag 4 is engaged, and the outer ring 1 and the shaft 2 are directly connected.

On the other hand, FIG. 14 shows a fourth embodiment. In this embodiment, the two-wheel drive mode and the four drive mode as described above are used.
This shows an example of a control structure for automatically switching the driving mode, and in the first embodiment described above, an electric switch 34 of a power supply circuit connected to the electromagnet 29 of the coupling means 21 is provided with the switch. A control device 80 for controlling the operation of is connected.

The control device 80 has a calculation function, and a variable resistor 81 for arbitrarily setting a variable value Z for control used in the calculation is connected to the control device 80.

A detector 82 for detecting the number of revolutions input to the rotation transmitting device is connected to the front or rear propeller shaft to which the shaft 2 of the rotation transmitting device is connected, and the driven wheel to which the outer ring 1 is connected. A detector 83 for detecting the number of rotations on the output side of the rotation transmission device is connected to the wheel on the side, and each of the detectors 82 and 83 outputs a detection signal to the control device 80. ing.

The control device 80 has the detectors 82 and 83.
When the input speed, the output speed, and the control variable Z are input from the variable resistor 81, the following equation

[0061]

[Equation 3]

The electric switch 34 is turned on when the above equation is satisfied and the electric switch 34 is turned off when the above equation is not satisfied.

In the embodiment having the above structure, when traveling on a normal pavement surface, a large value such as Z = 10 is set so that the above formula is not satisfied. This allows
The outer ring 1 of the rotation transmission device and the large diameter cage 12 are separated from each other
The wheel drive state is maintained, and the tight corner braking phenomenon during turning is avoided.

If a direct-coupled four-wheel drive is desired, Z =
It is set to 0 so that the above expression 3 is always satisfied. As a result, the electromagnet 29 is turned on, the outer ring 1 and the large diameter cage 12 are coupled, and the state in which the outer ring 1 and the shaft 2 are integrally coupled is maintained.

On the other hand, when traveling on a road surface having a low coefficient of friction such as a snowy road, Z is set to 0 or more and a relatively small value. As a result, when slippage or the like occurs on the drive-side wheel, the above expression 1 is established by changing the relationship between the input rotation speed and the output rotation speed. Can respond quickly to.

Further, by performing the control as described above, even when the engine braking is suddenly applied while the vehicle is traveling on a road surface having a low friction coefficient, the two-wheel drive is automatically switched to the four-wheel drive, and the spin or the like is performed. The risk of can be reliably avoided.

The control mechanism for automatically switching the driving modes as described above can be used in combination with an anti-skid brake system (hereinafter referred to as ABS) in a four-wheel drive vehicle. Detectors 82, 8
3 can be shared with the control device and the rotation sensor in the ABS.

In this case, when the ABS is operated, if the electromagnet is controlled to be turned off in any case, the two-wheel drive state is maintained, so that inconvenient power circulation can be eliminated and it is easy to perform without relying on the G sensor. It is possible to detect the lock of the wheel.

In the fourth embodiment, the running mode is automatically switched in the first embodiment, but the second to fifth embodiments can be similarly implemented.

[0070]

As described above, in the rotation transmission device of the present invention, the retainer normally holds the engaging element in the neutral position, and the engaging means moves the engaging element to the engaging position to follow the drive member. Since it is integrated with the member, it can be mounted on both FF base and FR base four-wheel drive vehicles, and the degree of freedom in mounting on the vehicle can be increased.

Further, the two-wheel drive and the four-wheel drive of the direct connection can be freely switched by operating the coupling means, and the engine braking can be arbitrarily applied during traveling, so that the vehicle can be driven safely and stably. There are advantages that can be realized.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing a rotation transmission device according to a first embodiment.

FIG. 2 (a) is an electromagnet OFF in the coupling means of the above.
Enlarged sectional view of state, (b) enlarged sectional view of electromagnet ON state

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a partially longitudinal front view showing a state in which a switch spring is attached to a cage.

FIG. 5 is a cross-sectional view showing the relationship between the sprag and the retainer when the coupling means is in a non-operating state.

FIG. 6 (a) is a partial vertical sectional front view showing the relationship between the switch spring and the retainer in the operating state of the coupling means, and FIG. 6 (b) is an enlarged sectional view showing the relationship between the sprag and the retainer.

7 is a sectional view taken along line VII-VII in FIG.

8 is a sectional view taken along line VIII-VIII in FIG.

9 (a) and 9 (b) are schematic views each showing an example of mounting a rotation transmission device on a four-wheel drive vehicle.

FIG. 10 is a vertical sectional view showing a second embodiment.

11 (a) and 11 (b) are cross-sectional views showing an operating state of the above coupling means, respectively.

FIG. 12 is a vertical sectional view showing a third embodiment.

FIG. 13 is a longitudinal sectional view showing an operating state of the above.

FIG. 14 is a block diagram showing a fourth embodiment.

[Explanation of symbols]

1 outer ring 2 axes 4 sprags 9 Switch spring 12 Large diameter cage 13 Small diameter cage 18, 19 pockets 21 coupling means 22 rotor 24, 50, 63 connector 29, 57 electromagnet 33,58,76 Battery 34, 59, 79 Electric switch 50 connector 51 Friction member 65, 77 solenoid 80 controller 81 Variable resistor 82,83 detector A rotation transmission device

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B60K 17/28-17/36 B60K 23/08 F16D 41/00-47/06

Claims (2)

(57) [Claims] 1. A large-diameter retainer and a small-diameter retainer are incorporated between a drive member and a driven member that are rotatably fitted inside and outside, and
One retainer is fixed to the drive member, and the other retainer
Rotatably supports the pockets formed on both cages.
Driven by the relative rotation of the large diameter cage and the small diameter cage.
Incorporate engaging element which engages with the moving member and a driven member, wherein between the two retention <br/> lifting unit and the driving member, while maintaining the neutral position not engaging the engaging zygote the drive member and a driven member the switch spring to the drive member and the co-rotation of both retainers provided, freely the rotational
Between the cage and the driven member can be rotated by remote control
The retainer and the driven member are detachably connected and
At the time of coupling, both cages are rotated relative to each other so that the engaging element serves as a driving member.
A coupling means for engaging with the driven member is provided, and the coupling means is provided.
Is retained and held against the rotatable retainer
A connector that is movable in the axial direction and a driven member that connects the connector.
It consists of an electromagnet to be attracted to the
A rotation transmission device in which a switch for changing over is an electric switch for remote operation . 2. A control means having an arithmetic function is connected to the electric switch, and the control means outputs the rotational speed applied to the driving member as an input rotational speed, the rotational speed output from the driven member as an output rotational speed, and zero. If Z is a variable that can be set arbitrarily, then 2. The rotation transmission device according to claim 1, wherein the electric switch is switched in a direction in which the retainer and the driven member are coupled when the relationship is established.