JP3688973B2 - Rotation transmission device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rotation transmission device that is used for switching between transmission and interruption of driving force on driving paths of various devices and vehicles.
[0002]
[Prior art]
For example, in an automobile, in order to selectively switch between transmission and interruption of power, it is necessary to incorporate and use a device that interrupts power on the power transmission path. For this reason, as an intermittent switching application for front and rear wheels of a 4WD vehicle JP-A-10-53044 and JP-A-11-12979 propose a rotation transmission device combining a roller type two-way clutch and a control means using an electromagnetic coil.
[0003]
8A, 8B, and 9 show the structures of the two-way clutch 51 and the control means 52 that controls the two-way clutch 51 in the above-described conventional rotation transmission device.
[0004]
The two-way clutch 51 includes an inner member 54 coupled to a rotary shaft 53 so as to rotate together with an outer ring 55 that is an outer member so as to be coaxially rotatable via a bearing 56, and an outer periphery of the inner member 54. A plurality of cam surfaces 57 are provided, a cylindrical surface 58 is provided on the inner periphery of the outer ring 55 to form a wedge space between both surfaces, and a cage 59 is disposed in the wedge space. By holding a roller 61 as an engaging member in the pocket 60, the roller 61 is incorporated into the wedge space, and the retainer 59 is supported in a neutral position where the roller 61 does not engage with the cylindrical surface 58 and the cam surface 57. The urging switch spring 62 is configured to be locked between the retainer 59 and the inner member 54 having the cam surface 57.
[0005]
Further, the control means 52 of the two-way clutch 51 has a U-shaped cross section that is fixed to a cylindrical outer member 55a provided integrally with the end of the outer ring 55 via a non-magnetic material 63a. A rotor 64, and an armature 65 that is positioned between the rotor 64 and the cage 59, is axially movable with the cage 59 at the end of the cage 59, and is disposed so as not to rotate relative to the rotor 64. And an electromagnetic coil 66 for pressing the rotor 64 and the armature 65 by magnetic force is housed in the rotor 64, and the electromagnetic coil 66 is arranged so as not to rotate by being attached to a fixed portion. The roller 61 of the two-way clutch 51 is engaged or disengaged by turning on and off the current to the electromagnetic coil 66.
[0006]
A bearing 67 is fitted on the inner diameter side of the inner cylindrical portion of the rotor 64, and the outer member 55a and the rotating shaft 53 are rotatably supported via the rotor 64 and the inner nonmagnetic body 68. Yes. Further, the outer nonmagnetic body 63 for preventing the magnetic flux of the rotor 64 from escaping to the outer member 55a, which is a magnetic body, is press-fitted and fixed to the outer cylindrical portion of the rotor 64. The outer nonmagnetic body 63 is the outer member. It is fixed so as not to rotate with respect to 55a.
[0007]
In this rotation transmission device, when the current is off, the roller 61 is biased to the neutral position of the cam surface 57 provided on the inner member 54 by the switch spring 62 via the retainer 59. The outer member 55 can idle.
[0008]
When it is desired to engage and drive the inner member 54 and the outer ring 55 of the rotation transmission device, the armature 65 connected to the retainer 59 is fixed to the outer member 55a by passing a current through the electromagnetic coil 66. The rotor 64 is brought into suction pressure contact with a magnetic force.
[0009]
Here, in the two-way clutch 51, since the roller 61 is engaged and disengaged, the outer ring 55 is required to have mechanical strength, and the friction force generated in the armature 65 and the rotor 64 by the magnetic force is applied to the outer ring 55 and the retainer 59. In order to transmit, it is necessary to integrally connect the outer member 55a and the rotor 64 in both the rotational direction and the axial direction. Therefore, a sufficient amount of engagement between the outer member 55a and the rotor 64 in the axial direction is provided. Must be secured.
[0010]
For this reason, in the conventional rotation transmission device, the outer ring 55 of the two-way clutch 51 and the outer member 55a of the electromagnetic clutch 52 are integrally formed using an iron material, and the outer non-magnetic body 63 is outer diameter of the rotor 64. The outer non-magnetic body 63 is fixed to the outer member 55a so as not to rotate with a pin 69 or the like.
[0011]
Further, since the outer non-magnetic body 63 and the rotor 64 need to be positioned in the axial direction, the rotor 64 is internally fitted to the inner diameter portion of the outer member 55a and is fixed in the axial direction by the retaining ring 70. Therefore, the outer member 55a, the outer non-magnetic body 63, and the cylindrical surface of the rotor 64 are structured in three layers in the radial direction.
[0012]
[Problems to be solved by the invention]
In the conventional rotation transmission device as described above, the outer ring 55 that is the outer member of the two-way clutch 51 and the outer member 55a that houses the rotor 64 of the control means 52 are integrally formed using an iron material, and The outer member 55a has a three-layer structure in the radial direction in which the outer non-magnetic body 63 and the rotor 64 are internally fitted to the inner diameter portion of the outer member 55a. There is a problem that the amount of use increases and the weight of the entire rotation transmission device increases.
[0013]
On the other hand, if the outer diameter of the outer member 55a is to be reduced, the outer diameter of the electromagnetic coil 66 is accordingly reduced, so that the amount of coil accommodation is reduced and the predetermined magnetic force is insufficient. Further, since the contact radius between the rotor 64 and the armature 65 becomes smaller as the outer diameter of the outer member 55a is reduced, the power consumption of the electromagnetic coil 66 is reduced in order to cause the control means 52 to generate a predetermined torque. There is a problem that the heat generation must be increased and the heat generation increases accordingly.
[0014]
Accordingly, an object of the present invention is to enable weight reduction and power saving without reducing the torque of the control means.
[0015]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention forms a two-way clutch by incorporating an engaging member supported by a cage between an inner member and a outer member that are rotatably fitted on the same axis. The armature is disposed at the end of the cage and rotates integrally with the cage, and is fixed to one of the outer member or the inner member. The electromagnetic coil is housed in the armature, and the electromagnetic coil is turned on and off. In the rotation transmission device formed by the armature suction and release rotor, the outer member of the two-way clutch and the outer member storing the rotor are separated and the rotor is stored at the end of the outer member of the two-way clutch. The outer member to be fixed is fixed, and the outer member for housing the rotor is formed of a non-magnetic material.
[0016]
Here, the outer member of the two-way clutch and the outer member housing the rotor are fixed by providing a fitting portion with a flat portion or unevenness or engaging members that engage with each other, in addition to press fitting. It can be set as the structure which connected both the outward members so that relative rotation was impossible.
[0017]
As another structure for fixing the fitting portion, the fitting portion can be fixed with a pin or a screw.
[0018]
Furthermore, when the rotor is fixed to the outer member that houses the rotor, in addition to the press-fitting, a fitting portion is provided with a flat portion, or either the outer member or the rotor is fixed by crimping and can do.
[0019]
The rotor may be rotatably attached to the outer member, and the rotor may be rotated integrally with the inner member of the two-way clutch.
[0020]
In the two-way clutch in the rotation transmission device, a wedge-shaped space is formed between an inner member having a plurality of cam surfaces on the outer diameter surface and an outer member having a cylindrical inner diameter surface, and the wedge-shaped space is supported by a cage. In addition, a structure incorporating a plurality of rollers can be employed.
[0021]
The non-magnetic material forming the outer member that houses the rotor can be selected from aluminum alloy, synthetic resin, copper, stainless steel, and the like.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below together with examples shown in FIGS.
[0023]
FIG. 1 shows a rotation transmission device according to a first embodiment. This rotation transmission device is a combination of a two-way clutch 1 and a control means 2 for controlling on / off of the two-way clutch 1, and the rotation shaft 3 is connected to the power input side. Type.
[0024]
First, the two-way clutch 1 includes an inner member (inner ring) 4 that is coupled via a serration or the like so as to rotate integrally with the rotary shaft 3 at an inner diameter portion, and an outer ring that is an outer member outside the inner member 4. 5 is rotatably fitted coaxially, a plurality of cam surfaces 6 are provided on the outer diameter surface of the inner member 4, and a cylindrical surface 7 is provided on the inner diameter surface of the outer ring 5, thereby forming a wedge space between the two surfaces. A cage 8 is arranged in the space.
[0025]
The retainer 8 is provided with pockets 9 of the same number and arrangement as the cam surface 6, and by holding the rollers 10 as the engaging members in the pockets 9, the rollers 10 are incorporated into the wedge space, The switch spring 11 is locked between the retainer 8 and the inner member 4 having the cam surface 6 in order to support and bias the retainer 8 to a neutral position where the roller 10 does not engage the cylindrical surface 7 and the cam surface 6. Are arranged.
[0026]
As shown in FIG. 1B, the switch spring 11 has bent ends 11a and 11a at both ends locked to the notch 12 of the inner member 4 having the cam surface 6 and the notch 13 of the retainer 8, respectively. The cage 8 is urged to be elastic toward the neutral position.
[0027]
The outer ring 5 described above is formed using an iron material to ensure strength as a clutch, one end is supported by the rotating shaft 3 via a bearing 14, and the other end is on the outer end of the roller 10. It is set to a length that will meet.
[0028]
Next, the control means 2 is positioned between the rotor 21 and the cage 8, the rotor 21 having a U-shaped cross section disposed so as to be opposed to the end of the cage 8. Formed of an armature 22 that is axially movable and non-rotatable relative to the vessel 8, a rotor 21, and an electromagnetic coil 23 that presses the armature 22 by magnetic force. The rotor 21 is separated from the outer ring 5. The electromagnetic coil 23 is fixed in the outer member 24 so as to rotate integrally. The electromagnetic coil 23 is accommodated in the rotor 21 and attached to the fixing member 31 to be unable to rotate, and the current to the electromagnetic coil 23 is turned on and off. The roller 10 of the two-way clutch 1 is engaged or disengaged.
[0029]
The outer member 24 is formed in a cylindrical shape using a non-magnetic material so that the magnetic flux of the rotor 21 does not escape to the outer ring 5 that is a magnetic body, and one end side is fixed to the end of the outer ring 5, By fixing the rotor 21 inside the other end, the rotor 21 and the outer ring 5 are connected to rotate integrally through the outer member 24.
[0030]
The rotor 21 is fitted with a bearing 25 on the inner diameter side of the inner cylindrical portion, and by inserting the bearing 25 into an inner nonmagnetic material 26 such as aluminum or synthetic resin that is fitted on the rotary shaft 3, The rotor 21 is rotatably supported on the rotary shaft 3.
[0031]
The armature 22 is formed in a disk shape using a magnetic metal plate, and is connected to the end of the retainer 8 via the connection fitting 27 so that it can move in the axial direction and cannot rotate relative to the retainer 8. It is connected.
[0032]
The connection fitting 27 is arranged so as to rotate integrally with the end portion of the cage 8, and a bent protrusion 28 provided on the outer periphery thereof is engaged with a hole 29 formed in the armature 22, so that the armature is connected to the connection fitting 27. 22 is movable in the axial direction, and the connection fitting 27 rotates the armature 22 and the cage 8 together, and the vertical surfaces of the armature 22 and the rotor 21 maintain an appropriate clearance. They are superposed via an elastic body such as a disc spring 30 provided between the opposing surfaces.
[0033]
The outer member 24 formed using a non-magnetic material has a length that can cover the entire length of the rotor 21 from the end of the outer ring 5, and the end of the outer ring 5 is connected to the outer diameter cylindrical portion at one end thereof. Are fixed by fitting so as to rotate integrally, and the rotor 21 is fitted and fixed to the inner diameter of the other end of the outer member 24 so as to rotate integrally with a sufficient amount of fitting secured.
[0034]
Several different means can be employed for fixing the outer member 24 to the outer ring 5. As the first fixing means, the outer diameter of the end of the outer ring 5 is formed in a cylindrical portion 5a having a small diameter. The outer ring 5 and the outer member 24 are integrally rotated by press-fitting the inner diameter of the outer member 24 into the cylindrical portion 5a until the inner circumferential annular protrusion 32 comes into contact therewith. Can be fixed.
[0035]
As shown in FIG. 3, the second fixing means is configured such that the inner diameter of the outer member 24 is fitted to the cylindrical portion 5a of the outer ring 5, and the concave portion 33 is provided in one of the fitting portions and the concave portion is provided in the other. By providing the convex part 34 fitted to 33, the outer ring 5 and the outer member 24 are fixed so as to rotate integrally.
[0036]
As shown in FIG. 4, the third fixing means is configured such that the inner diameter of one end of the outer member 24 is fitted to the cylindrical portion 5a of the outer ring 5, and an engagement member 35 such as a key is provided between the fitting portion surfaces. By driving, the outer ring 5 and the outer member 24 are fixed to rotate integrally.
[0037]
As fixing means other than those illustrated in the drawings, serrations may be provided between the fitting portion surfaces of the outer ring 5 and the outer member 24 so that the outer ring 5 and the outer member 24 rotate together.
[0038]
Further, for fixing the rotor 21 to the inner diameter on the other end side of the outer member 24, as in the case of fixing the outer member 24 to the outer ring 5, several different means are adopted on the basis of fitting. Can do.
[0039]
Although not specifically shown here, in addition to the fixing by press-fitting, as in the second fixing means of FIG. 3 described above, a flat portion that overlaps each other is provided in the fitting portion or the outer member 24 and the rotor 21 are connected. After fitting loosely, it is possible to adopt a structure in which either one is fixed by caulking.
[0040]
The outer member 24 is provided with a plurality of oil passage holes (through holes) 36 at predetermined intervals in the circumferential direction for lubrication at positions where the outer periphery of the armature 22 faces.
[0041]
Next, the rotation transmission device of the second embodiment shown in FIG. 2 is the same as that of the rotation transmission device of the first embodiment shown in FIG. The other example of a structure is shown.
[0042]
In the second embodiment, one end side inner diameter of the outer member 24 is loosely fitted to the outer diameter cylindrical portion 5 a having a smaller diameter at the end of the outer ring 5, and the radius from the outer surface of the outer member 24 is increased. A hole 37 is provided at a plurality of locations in the circumferential direction across the fitting portion between the outer ring 5 and the outer member 24 in the direction, and the pin 38 is fitted and inserted into each of the holes 37, whereby the outer ring 5 and the outer member 24 are The structure is fixed so as to rotate integrally.
[0043]
The hole 37 provided in the outer ring 5 may be a screw hole, and the outer ring 5 and the outer member 24 may be fixed by screwing a screw into the screw hole instead of the pin 28.
[0044]
As in the first embodiment, the rotor 21 is fixed to the inner diameter surface of the other end side of the outer member 24 by press-fitting or the like, so that the outer ring 5 and the rotor 21 rotate via the outer member 24. Both direction and axial direction are integrated.
[0045]
When the outer member 24 is loosely fitted to the outer diameter cylindrical portion 5a of the outer ring 5 as in the second embodiment, the outer ring 5 and the outer member are more than in the first embodiment. There is an advantage that the assembly of 24 is improved.
[0046]
The rotation transmission device according to the third embodiment shown in FIGS. 5A and 5B is the same as the rotation transmission device according to the first embodiment shown in FIG. The other example of the fixing structure of the member 24 is shown.
[0047]
In the third embodiment, chamfered surfaces 39 and 40 that overlap each other at the time of fitting are provided at the circumferential positions of the outer diameter cylindrical portion 5a of the outer ring 5 and the inner diameter surface of the outer member 24. By overlapping 39 and 40, a larger torque can be received in the rotational direction than simply press-fitting.
[0048]
In the rotation transmission device using a light-weight material such as an aluminum alloy as the nonmagnetic material of the outer member 24, when the rotation transmission device is used under conditions with a large temperature change, the heat of the outer member 24 is reduced. Since the expansion rate is large, the press-fitting allowance for the outer ring 5 is reduced. However, when the chamfered surfaces 39 and 40 that overlap each other are provided as in the third embodiment, the engagement state with respect to the rotation direction is achieved. It is effective in that it can be reliably maintained.
[0049]
Although illustration details are omitted, similarly, the outer cylindrical surface of the rotor 21 and the inner diameter surface of the outer member 24 are each provided with a chamfered surface so that the outer ring 5 and the outer member 24 are fixed in the rotational direction. To prevent relative rotation.
[0050]
In the third embodiment, as shown in FIG. 5A, in the axial direction, the end surface of the outer member 24 on the flat surface 40 side and the outer ring 5 are provided by the retaining ring 41, and the outer member 24 and The axial direction of the rotor 21 is respectively positioned by the retaining ring 42, and in this way, the outer member 24, the rotor 21 and the outer ring 5 do not need to be press-fitted, so that there is an advantage that the assemblability is good.
[0051]
In the third embodiment, the relative rotation of the outer member 24, the outer ring 5 and the rotor 21 is prevented by the flat surfaces 39 and 40, but not only the fitting by the flat surface but the first embodiment. The key, serration, screw or the like shown in the above form may be used in combination.
[0052]
In the fourth embodiment shown in FIGS. 6, 7 </ b> A, and 7 </ b> B, the rotor 21 of the control means 2 is fixed to the rotating shaft 3, the outer member 24 and the rotor 21 can be rotated, and the outer ring 5. Is the type with the power input side.
[0053]
The control means 2 of the fourth embodiment fixes the inner diameter portion of the rotor 21 to the inner nonmagnetic body 26 fixed to the rotating shaft 3 by means such as press fitting, and the outer diameter portion of the rotor 21 and the outer member 24. The outer member 24 fixed to the outer ring 5 is supported by the rotary shaft 3 via the bearing 25 a and the rotor 21.
[0054]
Further, as shown in FIG. 7A, the two-way clutch 1 has a cam surface 6 on the inner diameter surface of the outer ring 5 and a cylindrical surface 7 on the outer diameter surface of the inner member 4, and forms a wedge space between both surfaces. A roller 10 is held by a retainer 8 disposed in the wedge space, and a switch spring 11 is provided between the retainer 8 and the outer ring 5. Both bent ends 11a and 11a of the switch spring 11 are shown in FIG. As shown in B), the roller 10 is engaged with the notch 15 of the retainer 8 and the notch 16 of the outer ring 5 to hold the roller 10 in a neutral position with respect to the wedge space. The armature 22 arranged so as to be able to move and rotate together is opposed to the rotor 21.
[0055]
In the fourth embodiment, when the outer ring 5 and the outer member 24 are rotated and the rotating shaft 3 is stopped, the rotor 21 is also stopped, and energization of the electromagnetic coil 23 of the control means 2 is turned on. The armature 22 that rotates integrally with the outer ring 5 is adsorbed to the rotor 21 that stops, thereby causing the cam surface 6 of the outer ring 5 and the roller 10 of the retainer 8 to be out of phase and rotating when the two-way clutch 1 is engaged. The shaft 3 rotates.
[0056]
In each embodiment, the nonmagnetic material used for forming the outer member 24 includes an aluminum alloy, a synthetic resin (for example, polyamide, polyacetal, polyimide, polycarbonate, modified polyphenylene ether, thermoplastic polyester, polyphenylene sulfide, In addition to copper, polytetrafluoroethylene, polyetherimide, polysulfone, polyethersulfone, polyetherketone, polyamideimide), copper, and stainless steel (austenitic stainless steel represented by SUS304), etc. may be used when strength is required. it can. Further, if a synthetic resin is used as the outer member 24, it can be injection-molded and fixed integrally with the outer ring 5 or the rotor 21, and the use of a lightweight material such as the above-mentioned aluminum or synthetic resin makes the outer ring 5 shorter. As a result, the rotation transmission device as a whole can be reduced in weight, and if copper is used to form the outer member 24, heat dissipation is improved.
[0057]
The rotation transmission device shown in each embodiment of the present invention can be applied to all of the conventional rotation transmission devices described above as a roller engagement type clutch, and an elastic member such as a switch spring 11 connects the cage 8 and the roller 10 to each other. Even those that urge the neutral position where they are not engaged can be applied to a type of clutch that always urges the roller to one engagement position. In addition, the rotation transmission device may use the inner ring as the input side and the outer ring as the output side, or conversely, may use the inner ring as the output side and the outer ring as the input side.
[0058]
Furthermore, the two-way clutch 1 uses a sprag as an engaging element in addition to the structure of the roller-engaged clutch, and the outer diameter surface of the inner member 4 and the inner diameter surface of the outer ring 5 are cylindrical surfaces facing each other. Even if a sprag clutch structure is used that switches between forward and reverse rotation by holding a sprag with a pair of retainers for control and control arranged between them and controlling the angle of the sprag with the retainer for control. The effect similar to that of a roller engagement type clutch can be obtained.
[0059]
The rotation transmission device shown in each of the above embodiments is, for example, incorporated in a power transmission path in an automobile, coupled to the inner member 4 so as to rotate integrally with the rotary shaft 3 on the input side, and the outer ring. 5 is coupled to an output side member coupled to the front wheel or the rear wheel, and when the energization of the electromagnetic coil 23 of the control means 2 is off, the roller 10 is held in the neutral position by the action of the switch spring 11, and the inner member 4 and the outer ring 5 can idle, and the rotation of the rotating shaft 3 is not transmitted to the output side member.
[0060]
Here, in the first embodiment shown in FIG. 1, when energization of the electromagnetic coil 23 of the control means 2 is turned on, the armature 22 connected to the retainer 8 applies a magnetic force to the rotor 21 fixed to the outer ring 5. Thus, the frictional torque caused by the pressure contact acts on the cage 8 and the outer ring 5 via the armature 22, the rotor 21, and the outer member 24. When the inner member 4 and the outer ring 5 rotate relative to each other, the friction torque is Since the torque of the switch spring 11 is greater, the retainer 8 and the roller 10 rotate in the same manner as the outer ring 5, and as a result, the roller 10 moves from the neutral position of the cam surface 6 to the wedge engagement position. The inner member 4 and the outer ring 5 are engaged, and the rotation of the rotating shaft 3 is transmitted to the output side member through the outer ring 5.
[0061]
When the energization of the electromagnetic coil 23 is turned off in the state where the inner member 4 and the outer ring 5 are engaged with each other, the armature 22 is not attracted to the rotor 21, and the roller 10 acts on the cam surface 6 by the action of the switch spring 11. Returning to the neutral position, the two-way clutch 1 is disengaged and the transmission of rotation is cut off.
[0062]
Here, in the rotation transmission device, the outer ring 5 that is the outer member of the two-way clutch 1 and the outer member 24 that houses the rotor 21 of the control means 2 are separated, and the outer member 24 is attached to the end of the outer ring 5. By fixing, the outer ring 5 can be set to a length facing the end of the roller 10, and the material used for the outer ring 5 can be reduced by shortening the outer ring 5 using iron material.
[0063]
Further, by making the outer ring 5 of the two-way clutch 1 and the outer member 24 that accommodates the rotor 21 separate, a lightweight material can be selected for the formation of the outer member 24, thereby reducing the weight of the entire rotation transmission device. Further, the outer member 24 is fitted and fixed to the end of the outer ring 5 and the rotor 21 is housed inside the other end of the outer member 24 so that the outer diameter portion of the rotor 21 is outward. It becomes a two-layer structure with the member 24, and it becomes possible to reduce the diameter of the rotor support part by reducing the thickness of one layer compared to the conventional one, and if the outer diameter of the rotor support part is the same as before, it will be inside The diameter of the rotor 21 and the electromagnetic coil 23 to be incorporated can be increased.
[0064]
The magnitude of power is proportional to the number of turns of the coil and the magnitude of the current. Therefore, if the number of turns of the coil is increased by increasing the diameter of the electromagnetic coil 23, the power consumption can be reduced.
[0065]
【The invention's effect】
As described above, according to the present invention, the outer member of the two-way clutch and the outer member that accommodates the rotor are separated, and the outer member that accommodates the rotor is formed of a nonmagnetic material. Since the outer member of the two-way clutch is shortened to a length that can cover the two-way clutch, the material for forming the heavy outer member can be reduced, and the outer member that houses the rotor can be reduced. By adopting a lightweight material for the member, the entire rotation transmission device can be reduced in weight.
[0066]
Further, if the rotor is fixed to the inner diameter surface of the outer member that accommodates the rotor, the outer side of the outer diameter portion of the rotor has a two-layer structure with the outer member. Therefore, the size of the rotor and the electromagnetic coil is reduced. If the power is the same as before, the outer member can be made smaller in diameter, and if the outer member is kept the same size, the diameter of the rotor and electromagnetic coil incorporated in the outer member can be set larger. As a result, by increasing the number of turns of the coil, it is possible to reduce the amount of power with the same magnetic force as in the prior art.
[0067]
In addition, if an aluminum alloy or copper is used for the nonmagnetic material of the outer member, the outer member is exposed to the outside, which is advantageous in terms of heat dissipation.
[Brief description of the drawings]
1A is a longitudinal front view showing a first embodiment of a rotation transmission device, FIG. 1B is a longitudinal side view of the arrow aa in FIG. 2A, and FIG. 2A is a rotation transmission device; FIG. 3B is a longitudinal side view of the first embodiment of the fixing structure of the outer ring and the outer member. FIG. FIG. 4 is a longitudinal side view showing a second example of the fixing structure of the outer ring and the outer member. FIG. 5A is a longitudinal front view showing a third embodiment of the rotation transmission device, and FIG. FIG. 6A is a longitudinal front view showing a fourth embodiment of the rotation transmission device. FIG. 7A is a longitudinal side view of the arrow aa in FIG. FIG. 8A is a longitudinal front view of a prior art rotation transmission device, and FIG. 8B is a longitudinal side view of arrow aa in FIG. FIG. 9 is an arrow in FIG. Longitudinal side view of a b-b [Description of symbols]
DESCRIPTION OF SYMBOLS 1 Two-way clutch 2 Electromagnetic clutch 3 Rotating shaft 4 Inner member 5 Outer ring 6 Cam surface 7 Cylindrical surface 8 Cage 9 Pocket 10 Roller 11 Switch spring 21 Rotor 22 Armature 23 Electromagnetic coil 24 Outer member

Claims (13)

A two-way clutch is formed by incorporating an engagement member supported by a cage between an inner member and an outer member, which are rotatably fitted on the same axis, and is arranged at the end of the cage, and is integrated with the cage. Rotation transmission formed by an armature that rotates to the outside and a rotor that is fixed to one of the outer member or the inner member and that houses an electromagnetic coil inside and turns the electromagnetic coil on and off. In the device
The outer member for housing the rotor is separated from the outer member for housing the two-way clutch, and the outer member for housing the rotor is fixed to the end of the outer member for the two-way clutch. A rotation transmission device formed of a non-magnetic material. The rotation transmission device according to claim 1, wherein an outer member of the two-way clutch and an outer member that houses the rotor are fixed by fitting by press-fitting. The end portion of the outer member that houses the rotor is fitted to the end portion of the outer member of the two-way clutch, and a flat portion is provided in the fitting portion to connect the two members so as not to rotate relative to each other. The rotation transmission device according to claim 1 or 2. The end of the outer member that houses the rotor is fitted to the end of the outer member of the two-way clutch, and the fitting is provided with irregularities that fit together to connect the two members so that they cannot rotate relative to each other. The rotation transmission device according to claim 1 or 2, characterized by the above. The end portion of the outer member that houses the rotor is fitted to the end portion of the outer member of the two-way clutch, and an engaging member that engages with each other is provided in the fitting portion to connect the two members so as not to be relatively rotatable. The rotation transmission device according to claim 1 or 2. The end portion of the outer member that houses the rotor is fitted to the end portion of the outer member of the two-way clutch, and the fitting portion is fixed with a pin or a screw. Rotation transmission device. The rotation transmission device according to any one of claims 1 to 6, wherein the rotor is press-fitted and fixed inside an outer member that houses the rotor. 7. The rotor according to claim 1, wherein a rotor is fitted into an outer member that accommodates the rotor, and a flat portion is provided in the fitting portion to connect the outer member and the rotor so as not to be relatively rotatable. The rotation transmission device according to any one of the above. The rotor is fitted into an outer member that accommodates the rotor, and either the outer member or the rotor is crimped to connect the outer member and the rotor so as not to be relatively rotatable. Item 7. The rotation transmission device according to any one of Items 1 to 6. 7. The rotor according to claim 1, wherein the rotor is rotatably housed in an outer member housing the rotor, and the rotor is fixed so as to rotate integrally with the inner member of the two-way clutch. The rotation transmission device according to 1. The two-way clutch forms a wedge-shaped space between an inner member having a plurality of cam surfaces on the outer diameter surface and an outer ring having a cylindrical inner diameter surface, and a plurality of rollers supported by a cage in the wedge-shaped space. The rotation transmission device according to any one of claims 1 to 10, wherein the rotation transmission device is formed by being incorporated. The rotation transmission device according to any one of claims 1 to 11, wherein the nonmagnetic material used for forming the outer member that houses the rotor is an aluminum alloy or a synthetic resin. The rotation transmission device according to any one of claims 1 to 11, wherein the non-magnetic material used for forming the outer member that houses the rotor is copper or stainless steel.

Images