WO2011077670A1 - 軸連結機構 - Google Patents
軸連結機構 Download PDFInfo
- Publication number
- WO2011077670A1 WO2011077670A1 PCT/JP2010/007291 JP2010007291W WO2011077670A1 WO 2011077670 A1 WO2011077670 A1 WO 2011077670A1 JP 2010007291 W JP2010007291 W JP 2010007291W WO 2011077670 A1 WO2011077670 A1 WO 2011077670A1
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- WIPO (PCT)
- Prior art keywords
- base
- axial
- pair
- radial
- shaft
- Prior art date
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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
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/50—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members
- F16D3/64—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members comprising elastic elements arranged between substantially-radial walls of both coupling parts
- F16D3/68—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members comprising elastic elements arranged between substantially-radial walls of both coupling parts the elements being made of rubber or similar material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0409—Electric motor acting on the steering column
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
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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
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
- F16D3/12—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted for accumulation of energy to absorb shocks or vibration
Definitions
- the present invention relates to a shaft coupling mechanism suitable for coupling a rotation shaft on the rotation source side such as an electric motor in an electric power steering apparatus and a rotation shaft on the operation side such as a steering shaft of an automobile.
- an electric power steering apparatus easily adds a rotational force based on rotation of an output rotation shaft of an electric motor to a rotational force based on rotation of a manually operated steering wheel (handle) to facilitate manual steering of the steering wheel.
- the steering shaft on the steering wheel side and the rotating shaft on the output rotating shaft side of the electric motor are connected via a shaft connecting mechanism (coupling). is doing.
- a pair of rotation transmitting members an elastically deformable intermediate interposed member disposed between the pair of rotation transmitting members, one connecting base connected to one rotating shaft, and the other connected to the other rotating shaft
- a rotating shaft connected to an output rotating shaft of an electric motor, for example, and a rotating shaft connected to a steering wheel, for example.
- the backlash in the direction around the shaft center is unlikely to occur, and the impact during reversal of the electric motor and the transmission of brush vibrations to the steering wheel can be reduced.
- a shaft coupling mechanism for an electric power steering device that is not allowed (see Patent Document 4).
- each of the coupling bases includes a base and a protrusion integrally protruding in the axial direction from one axial surface of the base, so that one rotation In the axial relative displacement of the shaft with respect to the other rotating shaft, the protrusion of each connecting base presses and contacts the base of the mating connecting base, and this press and the impact sound caused by the contact are generated.
- each rotation transmission member may be abnormally deformed, or the intermediate interposed member may be excessively elastically compressed and deformed, resulting in deterioration in durability.
- the present invention has been made in view of the above-described points, and an object of the present invention is to eliminate the occurrence of collision noise in the relative displacement in the axial direction of one rotary shaft with respect to the other rotary shaft.
- an unpleasant frictional sound is not generated, and the projections of the connection bases contact each rotation transmission member or the intermediate interposed member in the direction around the axis.
- the shaft coupling mechanism according to the present invention which is arranged between two rotating shafts so as to transmit the rotation of one rotating shaft to the other rotating shaft and connects the two rotating shafts, is connected to one rotating shaft.
- Each of the first and second connecting bases protrudes in the axial direction from one axial surface of the first base and the first base.
- a first axial protrusion formed integrally with the first connecting portion, and a first axial protruding portion of one connecting base and a first axial protruding portion of the other connecting base are The rotation transmitting members are spaced apart from each other in the direction around the center, and each of the pair of rotation transmitting members is arranged in the axial direction. And the second base portion disposed between the first base portions of the one and the other coupling bases and spaced apart from each other in the direction around the axis and projecting radially from the outer peripheral edge of the second base portion. And at least a pair of first radial protrusions formed integrally with the second base, and a through-hole formed at the center of the second base, and one of the pair of rotation transmission members.
- the pair of first radial projections of the rotation transmission member and the pair of first radial projections of the other rotation transmission member of the pair of rotation transmission members face each other in the axial direction, and are intermediate intermediate members Is protruded in the radial direction from the third base portion disposed between the second base portions of the pair of rotation transmitting members in the axial direction and spaced apart from each other in the direction around the axial center from the outer peripheral edge of the third base portion.
- the pair of first radial protrusions disposed between the pair of first radial protrusions of the rolling transmission member and having a width greater than the width in the direction around the axis of the pair of first radial protrusions.
- Two radial projections and a third base projecting from one axial surface of the third base in the axial direction are formed integrally with the third base and pass through the through hole of one second base
- a pair of second radial projections of the intermediate interposed member is more rigid than the first axial projection and the rigidity of the first radial projection.
- One surface is in contact with the axial surface of the third axial protrusion, and the first axial protrusion of one of the coupling bases is one second radial protrusion in the direction around the axis.
- the first axial protrusion of the other connecting base is the other in the direction around the axis.
- the other side surface in the direction around the axis of one of the second radial protrusions and the other second diameter on both side surfaces in the direction around the axis centered between the second radial protrusions The first protrusions of one of the connecting bases are in contact with one of the side surfaces in the direction around the axial center of the directional protrusion, and beyond the one axial surface of the one rotation transmitting member at the axial front end surface. It faces one surface in the axial direction of the base with a gap.
- At least one of the first base portion of the one coupling base and the other rotation shaft is in the axial direction of the second axial projection on one surface in the axial direction. At least one of the first base portion of the other connecting base and the other rotating shaft is in contact with the axial surface of the third axial protrusion at one surface in the axial direction.
- the first axial protrusion of one of the connecting bases extends beyond the one axial face of the other rotation transmitting member at the axial front end surface of the first base of the other connecting base.
- the first axial protrusion of the other connecting base is opposite to one axial surface of the one rotation transmitting member at the axial front end surface.
- one surface of the first base portion of the connecting base faces the gap in the axial direction, the axial direction of one of the connecting bases.
- the contact between the tip surface of the first portion and the one axial surface of the base portion of the other connecting base, and the tip surface of the axial protrusion of the other connecting base and one axial surface of the base portion of the one connecting base In addition to being able to avoid contact, the axial protrusions of the one and the other coupling bases can be brought into contact with the entire surface of the radial protrusions of the pair of rotation transmitting members in the direction around the axis.
- each of the pair of rotation transmitting members is formed integrally with one axial surface of the second base, and the second axial projection protruding from the through hole is intermittently or continuously formed. It further includes a projecting portion which is surrounded by a specific shape.
- the second and third axial protrusions are greatly elastically deformed or bent, and the original of the second and third axial protrusions is lost. Even if the function does not occur, the functions of the second and third axial protrusions can be substituted by the protrusions.
- the pair of rotation transmission members are preferably formed of a hard resin such as polyacetal resin or polyamide resin, but may be formed of a hard resin exhibiting other rigidity. It is good to be formed from rubber elastic bodies, such as urethane rubber and polyester elastomer.
- the shaft coupling mechanism further includes coupling means for coupling a pair of rotation transmission members to each other, and the coupling means is arranged in the other axial direction of the second base portion of the one rotation transmission member. It protrudes from the inner peripheral edge of the surface toward the second base of the other rotation transmission member and is provided integrally with the second base of the one rotation transmission member, and at the tip, the second of the other rotation transmission member A claw portion hooked on the inner peripheral edge of the base portion and the inner peripheral edge of the other axial surface of the second base portion of the other rotation transmission member project toward the second base portion of the one rotation transmission member and the other It is preferable to have a claw portion provided integrally with the second base portion of the rotation transmission member and hooked to the inner peripheral edge of the second base portion of one rotation transmission member at the tip.
- the intermediate interposed member having the third base is formed by both claws of the coupling means. A through hole each of which penetrates may have to the third base.
- the first axial protrusions of the one and the other coupling bases are configured so that play does not occur in the initial rotation relative to the one rotational shaft with respect to the other rotational shaft.
- One connecting base may be directly connected and fixed to one rotating shaft, but may be indirectly connected to one rotating shaft via another rotation transmission mechanism such as a gear mechanism.
- the other connecting base is the same.
- the shaft coupling mechanism of the present invention may be for an electric power steering apparatus.
- one rotating shaft is coupled to the output rotating shaft of the electric motor, and the other rotating shaft.
- the shaft may be connected to the steering shaft of the automobile.
- FIG. 1 is an explanatory front view of a preferred example of an embodiment of the present invention.
- FIG. 2 is a partially broken front explanatory view of the example shown in FIG. 3 is a cross-sectional explanatory view taken along the line III-III of the example shown in FIG. 4 is a cross-sectional explanatory view taken along the line IV-IV in the example shown in FIG.
- FIG. 5 is a sectional view taken along the line VV in the example shown in FIG. 6 is an explanatory diagram on the right side of the connecting base on the rotating shaft side in the example shown in FIG.
- FIG. 7 is a left side explanatory view of the coupling base on the steering shaft side in the example shown in FIG.
- FIG. 8A and 8B are explanatory views of the intermediate intermediate member of the example shown in FIG. 1, wherein FIG. 8A is a right side view, and FIG. 8B is a cross-sectional view taken along the line bb in FIG. 9A and 9B are explanatory views of the rotation transmission member on the rotating shaft side of the example shown in FIG. 1, wherein FIG. 9A is a left side view, and FIG. 9B is a sectional view taken along line bb in FIG. (C) is a right side view.
- 10A and 10B are explanatory views of the rotation transmission member on the steering shaft side in the example shown in FIG. 1, wherein FIG. 10A is a left side view, and FIG. 10B is a sectional view taken along line bb in FIG. (C) is a right side view.
- a shaft coupling mechanism 1 for an electric power steering apparatus includes a coupling base 3 coupled to a rotating shaft 2 on the electric motor side of the electric power steering apparatus, and a steering as a rotating shaft.
- a pair of connection bases 5 connected to the shaft 4 and a pair of parts which are arranged between the connection bases 3 and 5 and transmit the rotation of the rotating shaft 2 in the R direction to the steering shaft 4 via the connection bases 3 and 5.
- the rotation transmission members 6 and 7, the intermediate interposed member 8 disposed between the pair of rotation transmission members 6 and 7, and the coupling means 9 for coupling the pair of rotation transmission members 6 and 7 to each other are provided. .
- the rigid connecting base 3 includes an annular base 11 and an axial direction of the base 11, that is, one annular surface 12 in the A direction, and the base 16 of the connecting base 5.
- Two pairs of axial projections 13 that are integrally projected toward the center and arranged at equal angular intervals of 90 ° in the direction around the axis, that is, in the R direction, and a through hole formed at the center of the base 11 14.
- the rotary shaft 2 may be fitted to the base 11 in the through-hole 14 inserted as in this example, but is fitted to the base 11 in a bottomed recess formed in the center of the base 11. Further, it may be formed integrally with the base 11.
- the rigid connecting base 5 is integrated with an annular base 16 and one annular surface 17 in the A direction of the base 16 in the A direction toward the base 11 of the connecting base 3. And two pairs of axial protrusions 18 which are arranged at equal angular intervals of 90 ° in the R direction, and a through hole 19 formed in the center of the base portion 16.
- the steering shaft 4 may also be fitted to the base 16 in the through hole 19 inserted as in this example, but is fitted to the base 16 in a bottomed recess formed in the center of the base 16. Further, it may be formed integrally with the base portion 16.
- Each of the axial protrusions 13 has flat side surfaces 21 and 22 as a pair of rigid rotation transmission surfaces in the R direction, and each of the axial protrusions 18 also has a pair of rigid rotation transmissions in the R direction. It has flat side surfaces 23 and 24 as surfaces.
- the rigid rotation transmission member 6 integrally formed of polyacetal resin, polyamide resin or the like is disposed between the base portions 11 and 16 in the A direction and concentric with the base portions 11 and 16 as shown in FIG.
- the annular base portion 31 and the cylindrical outer peripheral edge 32 of the base portion 31 project radially from the base portion 31 and are provided integrally with the base portion 31 and spaced apart at equal angular intervals of 45 ° in the R direction.
- Each radial protrusion 33 has side surfaces 41 and 42 as a pair of rigid rotation transmission surfaces in the R direction, and the surfaces 43 of each radial protrusion 33 facing the intermediate interposed member 8 are flush with each other. Becomes flat, preferably medium-high in the R direction.
- the protrusions 38 are formed of four arc-shaped protrusions 45 extending in the R direction and spaced apart from each other at equal angular intervals of 90 ° in the R direction on the concentric circles.
- the end faces 46 are flat and flush with each other.
- a rigid rotation transmission member 7 integrally formed of polyacetal resin, polyamide resin or the like as in the rotation transmission member 6 is disposed between the base portions 11 and 16 in the A direction as shown in FIG.
- An annular base 51 arranged concentrically with the bases 11 and 16, a cylindrical outer peripheral edge 52 of the base 51 that protrudes in a radial direction and extends integrally with the base 51 and 45 ° in the R direction.
- the four pairs of radial projections 53 spaced apart from each other at equal angular intervals and the cylindrical inner peripheral edge 54 of the base 51 extend in the A direction and are spaced apart from each other at equal angular intervals of 90 ° in the R direction.
- the through-hole 59 is provided and is configured in the same manner as the rotation transmission member 6.
- Each radial protrusion 53 has side surfaces 61 and 62 as a pair of rigid rotation transmission surfaces in the R direction, and the surfaces 63 of each radial protrusion 53 facing the intermediate interposed member 8 are flush with each other. Becomes flat, preferably medium-high in the R direction.
- the protrusion 58 is composed of four arc-shaped protrusions 65 extending in the R direction and spaced apart from each other at an equal angular interval of 90 ° in the R direction on the concentric circle, and the end surface 66 of each protrusion 65 in the A direction. Are flat and flush with each other.
- the rotation transmission member 6 and the rotation transmission member 7 have the base 31 and the base 51, and the radial protrusions 33 and the radial protrusions 53, respectively, with the intermediate interposed member 8 therebetween. They are arranged concentrically so as to face each other in the direction.
- the intermediate interposed member 8 having a rigidity smaller than that of the rotation transmitting members 6 and 7 and elastically deformable and integrally formed from a rubber elastic body such as urethane rubber, polyester elastomer, etc., as shown in FIG.
- a base 71 having a disc shape disposed concentrically with the bases 31 and 51 between the bases 31 and 51 in a direction and a cylindrical outer peripheral edge 72 of the base 71 projecting in a radial direction and extending integrally with the base 71.
- four pairs of radial protrusions 73 spaced apart from each other at equal angular intervals of 45 ° in the R direction, and formed at the base 71 and spaced apart from each other at equal angular intervals of 45 ° in the R direction.
- the eight arcuate through-holes 74 formed concentrically and the base 71 projecting in the A direction from one flat surface 75 in the A direction and integrally formed with the base 71 31 is formed integrally with the base 71 so as to protrude in the A direction from the axial protrusion 76 passing through the through hole 39 formed in the center of 31 and the other flat surface 77 of the base 71 in the A direction.
- the base 71 is the bases 31 and 51
- the radial protrusion 73 is the radial protrusion.
- the present invention is not limited to this, and may have different heights in the A direction.
- Each radial protrusion 73 of the intermediate interposed member 8 has a rigidity smaller than the rigidity of each of the radial protrusions 33 and 53 of the rotation transmitting members 6 and 7, and is elastically deformable.
- Each of the radial protrusions 73 having 80 is provided between the corresponding radial protrusions 33 and 53 of the rotation transmitting members 6 and 7 in the A direction, respectively. They are arranged in close contact with each other and have a width D2 larger than the width D1 in the R direction of each of the radial protrusions 33 and 53.
- the rotation transmitting members 6 and 7 and the intermediate interposed member 8 sandwiched between the rotation transmitting members 6 and 7 include the base portions 31 and 51 and the base portion 71, and the radial protrusions 33 and 53, respectively.
- the portions 73 are concentrically arranged so as to face each other in close contact with each other in the A direction.
- the base 11 and the rotation shaft 2 of the connection base 3 are in contact with the A-direction surface 82 of the axial protrusion 76 at the A-direction surfaces 12 and 81, respectively.
- the two side surfaces 21 and 22 in the direction are in contact with one side surface 79 in the R direction of one radial projection 73 and the other side surface 80 in the R direction of the other radial projection 73, respectively, and rotate.
- the surface 56 of the connecting member 5 is opposed to the surface 17 of the base portion 16 of the connection base 5 with a gap 84 across the surface 56 of the transmission member 7.
- the base portion 16 and the steering shaft 4 of the connection base 5 are in contact with the A-direction surface 86 of the axial protrusion 78 at the A-direction surfaces 17 and 85, respectively, and the axial protrusion 18 of the connection base 5.
- the two side surfaces 23 and 24 in the R direction are in contact with the other side surface 24 in the R direction of the one radial projection 73 and the one side surface 79 in the R direction of the other radial projection 73, respectively.
- it faces the surface 12 of the base 11 of the connection base 3 with a gap 88 at the tip surface 87 in the A direction beyond the surface 36 of the rotation transmitting member 6.
- the coupling means 9 protrudes from the inner peripheral edge 34 of the rotation transmitting member 6 toward the base 51 of the rotation transmitting member 7 and extends integrally with the base 31 and includes every other through hole 74 and groove 55.
- the four pawls 91 hooked on the inner peripheral edge 54 of the base 51 of the rotation transmitting member 7 in the locking groove 57 at the tip, and the annular base 31 of the rotation transmitting member 6 from the inner peripheral edge 54 of the rotation transmitting member 7.
- the inner peripheral edge 34 of the base 31 of the rotation transmitting member 6 at the distal end through the remaining through-holes 74 and the grooves 35 and at the front end of the locking groove 37.
- Each of the claw portions 91 and 92 that are spaced apart from each other at equal angular intervals in the R direction has a flange portion 93 at the tip thereof. Locking groove with collar 93 7, the rotation transmitting members 6 and 7 are coupled to each other with the intermediate interposed member 8 interposed therebetween via the coupling means 9. .
- the axial protrusions 13 of the coupling base 3 are each in the R direction.
- the radial projections 73 of each pair of rotation transmitting members 6 and 7, that is, between every other radial projections 33 and 53, and between the intermediate projections are arranged between one radial projection 73, that is, between every other radial projection 73.
- each of the rotation transmitting members 6 and 7 has a pair of radial protrusions 33 and 53, the other radial protrusions 33 and 53, that is, every other radial protrusion.
- Others between 33 and 53 and between the radial protrusions 73 of each pair of intermediate interposed members 8 Are arranged between the remaining radial projections 73, that is, between the remaining radial projections 73, and each axis of the connecting base body 3 is detected when the rotation shaft 2 and the steering shaft 4 are rotated relative to each other in the R direction below a certain level.
- the direction protrusion 13 is in contact with the side surfaces 79 and 80 in the R direction of each radial protrusion 73 of the intermediate interposed member 8 facing in the R direction at the side surfaces 21 and 22 in the R direction, respectively.
- Each of the side surfaces 23 and 24 is in contact with the side surfaces 79 and 80 in the R direction of each radial projection 73 of the intermediate interposed member 8 facing in the R direction, respectively, while the rotation transmitting member 6 facing in the R direction.
- 7 radial projections 33 and 7 It has a respective non-contact with the side surfaces 41 and 42 as well as 61 and 62 of 53.
- the protrusion 45 that intermittently surrounds the axial protrusion 76 protruding from the through hole 39 has a length (protrusion amount) in the A direction that is smaller than the protrusion amount of the axial protrusion 76 from the through hole 39.
- the protruding portion 38 has a gap 95 smaller than the corresponding gap 88 between the end surface 46 in the A direction and the surface 12, and similarly, an axial protruding portion 78 protruding from the through hole 59.
- the protrusion 58 having the intermittently surrounding protrusion 65 and having a length (protrusion amount) in the A direction that is smaller than the protrusion amount of the axial protrusion 78 from the through hole 59 is greater than the corresponding gap 84.
- a small gap 96 is formed between the end surface 66 and the surface 17 in the A direction.
- the shaft coupling mechanism 1 that couples the rotating shaft 2 and the steering shaft 4 as the above two rotating shafts
- the steering wheel when the steering wheel is manually operated by the driver, the steering shaft 4 Rotated in the R direction, the rotation of the steering shaft 4 in the R direction is transmitted as a reciprocating motion to a drag link or the like via a transmission mechanism such as a gear (not shown) to give a steering force to the steered wheels (wheels).
- a shaft coupling mechanism 1 that is arranged between the rotating shaft 2 and the steering shaft 4 so as to transmit the rotation of the rotating shaft 2 in the R direction to the steering shaft 4 that is the other rotating shaft and connects the rotating shaft 2 and the steering shaft 4.
- the steering wheel is not manually operated by the driver and the steering shaft 4 is not rotated in the R direction, or the steering wheel is manually operated by the driver and the steering shaft 4 is rotated in the R direction.
- the relative rotation in the R direction of the rotary shaft 2 with respect to the steering shaft 4 is a minute one within about half of the difference between the width D2 and the width D1, the radial protrusion 73 is easily compressed and deformed.
- Such relative rotation in the R direction of the rotating shaft 2 is hardly transmitted to the steering shaft 4, and thus the electric power via the shaft coupling mechanism 1 and the steering shaft 4 is not transmitted. It is possible to reduce transmission of shock and brush vibration to the steering wheel so as not to make the steering feeling uncomfortable, and to the side surfaces 41 and 61 after the radial protrusion 73 is compressed more than a certain amount. 21 or the contact of the side surface 22 with the side surfaces 42 and 62 can be prevented and further elastic compressive deformation of the radial projection 73 can be suppressed. It is possible to maintain contact between the side surfaces 21 and 22 and 23 and 24 and the side surfaces 79 and 80 in the R direction between the axial projections 13 and 18 and the radial projection 73 over a long period of time. The play in the R direction is less likely to occur between 2 and 2.
- the rotation transmitting members 6 and 7 rotate the steering shaft 4 in the R direction by manual operation by the driver of the steering wheel and rotate the rotating shaft 2 in the R direction by the operation of the electric motor.
- the rotation shaft 2 is to be rotated relative to the R direction by a certain amount or more, that is, about half or more of the difference between the width D2 and the width D1
- the side surface 21 contacts the side surfaces 41 and 61 or the side surfaces 42 and 62
- the radial projections 33 and 53 are pressed in the R direction by the axial projection 13 based on the contact of the side surface 22 with the surface 22 in response to the relative rotation in the R direction more than a certain level in the R direction.
- the rotation is transmitted to the steering shaft 4 to assist the rotation of the steering shaft 4.
- the base 11 of the coupling base 3 and the rotary shaft 2 are respectively the A-direction surfaces 12 and 81 that are arranged flush with each other, and the A-direction surface of the axial protrusion 76.
- the base 16 of the coupling base 5 and the steering shaft 4 are in contact with the A-direction surface 86 of the axial projection 78 at the A-direction surfaces 17 and 85, which are arranged flush with each other.
- the axial protrusion 13 of the coupling base 3 faces the surface 17 of the base 16 of the coupling base 5 with a gap 84 at the tip end surface 83 in the A direction beyond the surface 56 of the rotation transmitting member 7.
- the axial protrusion 18 of the connection base 5 faces the surface 12 of the base 11 of the connection base 3 with a gap 88 at the tip surface 87 in the A direction beyond the surface 36 of the rotation transmitting member 6.
- the axial protrusions 13 and 18 of the connection bases 3 and 5 are transmitted in rotation.
- the rotation transmitting members 6 and 7 have the protruding portions 38 and 58 formed integrally with the surfaces 36 and 56 of the base portions 31 and 51, respectively. Even if the protrusions 76 and 78 are largely elastically compressed and deformed, or the original functions of the axial protrusions 76 and 78 are not generated, the shafts are contacted with the surfaces 12 and 17 of the protrusions 38 and 58. The function of the direction protrusions 76 and 78 can be substituted.
- the intermediate interposed member 8 disposed between the rotation transmission members 6 and 7 in the A direction is between the radial protrusions 33 and 53 of the rotation transmission members 6 and 7 in the A direction, respectively.
- each of the radial protrusions 33 and 53 has a radial protrusion 73 having a width D2 larger than the width D1 in the R direction.
- 73 has a rigidity smaller than the rigidity of each of the radial protrusions 33 and 53 of the rotation transmitting members 6 and 7, and as a result, the transmission of the rotation of the rotating shaft 2 in the R direction to the steering shaft 4 is an intermediate interposed member.
- the diameter of the intermediate interposed member 8 can be reduced by the radial protrusions 33 and 53 of the rotation transmitting members 6 and 7 having a large rigidity in the relative rotation of the rotation shaft 2 with respect to the steering shaft 4 in the R direction. Since the large elastic deformation of the directional protrusion 73 can be prevented, the permanent deformation of the intermediate interposed member 8 due to creep can be reduced even when a resin material having flexibility and low rigidity is used for the intermediate interposed member 8. In addition, since the pair of rotation transmission members 6 and 7 are connected to each other via the coupling means 9, the assembling property can be improved and the pair of rotation transmission members 6 and 7 by elastic deformation of the intermediate interposed member 8.
- the intermediate interposed member 8 is positioned with respect to the R direction with respect to the pair of rotation transmitting members 6 and 7 via both claw portions 91 and 92 of the coupling means 9 that penetrates the through hole 74. Therefore, the effect of the intermediate interposed member 8 can be obtained evenly with respect to both rotations of the rotation shaft 2 and the steering shaft 4 in the relative R direction.
- the shaft coupling mechanism 1 in the above example is composed of one intermediate interposed member 8, but may instead be composed of two or more intermediate interposed members 8, and each of the rotation transmitting members 6 and 7. Further, it may be composed of two or more, the axial protrusions 13 and 18 of the coupling bases 3 and 5, the radial protrusions 33 and 53 of the rotation transmitting members 6 and 7, and the radial direction of the intermediate interposed member 8.
- the protrusion 73 and the claw portions 91 and 92 of the coupling means 9 are not limited to the above number, and the surface 12 of the base 11 and the surface 81 of the rotating shaft 2 do not have to be flush with each other.
- the surface 17 of the base 16 and the surface 85 of the steering shaft 4 may not be flush with each other.
Abstract
Description
2 回転軸
3 連結基体
4 ステアリング軸
5 連結基体
6、7 回転伝達部材
8 中間介在部材
Claims (2)
- 一方の回転軸の回転を他方の回転軸に伝達するように二つの回転軸の間に配されて二つの回転軸を連結する軸連結機構であって、一方の回転軸に連結される一方の連結基体と、他方の回転軸に連結される他方の連結基体と、これら一方及び他方の連結基体間に配されている一対の回転伝達部材と、この一対の回転伝達部材間に配されている中間介在部材とを具備しており、一方及び他方の連結基体の夫々は、第一の基部と、この第一の基部の軸方向の一方の面から軸方向に突出して当該第一の基部に一体的に形成された第一の軸方向突部とを具備しており、一方の連結基体の第一の軸方向突部と他方の連結基体の第一の軸方向突部とは、軸心周りの方向において間隔をもって配されており、一対の回転伝達部材の夫々は、軸方向において一方及び他方の連結基体の第一の基部間に配されている第二の基部と、軸心周りの方向において互いに離間していると共に第二の基部の外周縁から径方向に突出して当該第二の基部に一体的に形成された少なくとも一対の第一の径方向突部と、第二の基部の中央に形成された貫通孔とを有しており、一対の回転伝達部材の一方の回転伝達部材の一対の第一の径方向突部と一対の回転伝達部材の他方の回転伝達部材の一対の第一の径方向突部とは、軸方向において互いに対面しており、中間介在部材は、軸方向において一対の回転伝達部材の第二の基部間に配されている第三の基部と、軸心周りの方向において互いに離間して第三の基部の外周縁から径方向に突出して当該第三の基部に一体的に形成されていると共に軸方向において一対の回転伝達部材の一対の第一の径方向突部間の夫々に配されており、且つ一対の第一の径方向突部における軸心周りの方向の幅よりも大きな幅をもった一対の第二の径方向突部と、第三の基部の軸方向の一方の面から軸方向に突出して当該第三の基部に一体的に形成されていると共に一方の第二の基部の貫通孔を貫通した第二の軸方向突部と、第三の基部の軸方向の他方の面から軸方向に突出して当該第三の基部に一体的に形成されていると共に他方の第二の基部の貫通孔を貫通した第三の軸方向突部とを有しており、中間介在部材の一対の第二の径方向突部は、第一の軸方向突部及び第一の径方向突部の剛性よりも小さな剛性を有すると共に弾性変形可能であり、一方の連結基体の第一の基部及び一方の回転軸のうちの少なくとも一方は、その軸方向の一方の面で第二の軸方向突部の軸方向の面に接触しており、他方の連結基体の第一の基部及び他方の回転軸のうちの少なくとも一方は、その軸方向の一方の面で第三の軸方向突部の軸方向の面に接触しており、一方の連結基体の第一の軸方向突部は、軸心周りの方向における一方の第二の径方向突部間に配されていると共にその軸心周りの方向における両側面で一方の第二の径方向突部の軸心周りの方向における一方の側面及び他方の第二の径方向突部の軸心周りの方向における他方の側面に夫々接触しており、且つ他方の回転伝達部材の一方の軸方向の面を越えて軸方向の先端面で他方の連結基体の第一の基部の軸方向の一方の面に隙間をもって対面しており、他方の連結基体の第一の軸方向突部は、軸心周りの方向における他方の第二の径方向突部間に配されていると共にその軸心周りの方向における両側面で一方の第二の径方向突部の軸心周りの方向における他方の側面及び他方の第二の径方向突部の軸心周りの方向における一方の側面に夫々接触しており、且つ一方の回転伝達部材の一方の軸方向の面を越えて軸方向の先端面で一方の連結基体の第一の基部の軸方向の一方の面に隙間をもって対面している軸連結機構。
- 一対の回転伝達部材の夫々は、第二の基部の一方の軸方向の面に一体的に形成されていると共に貫通孔から突出する第二の軸方向突部を断続的又は連続的に取り囲んだ突出部を更に具備している請求項1に記載の軸連結機構。
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BR112012014128A BR112012014128B8 (pt) | 2009-12-25 | 2010-12-15 | Mecanismo de acoplamento de haste |
KR1020127016036A KR101398046B1 (ko) | 2009-12-25 | 2010-12-15 | 축 연결 기구 |
CN201080058677.0A CN102686898B (zh) | 2009-12-25 | 2010-12-15 | 联轴机构 |
US13/518,968 US8616986B2 (en) | 2009-12-25 | 2010-12-15 | Shaft coupling mechanism |
KR1020137028340A KR101389128B1 (ko) | 2009-12-25 | 2010-12-15 | 축 연결 기구 |
EP10838910.7A EP2518358A4 (en) | 2009-12-25 | 2010-12-15 | SHAFT CLUTCH MECHANISM |
US14/085,130 US9051973B2 (en) | 2009-12-25 | 2013-11-20 | Shaft coupling mechanism |
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JP2009296416A JP5428852B2 (ja) | 2009-12-25 | 2009-12-25 | 軸連結機構 |
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US13/518,968 A-371-Of-International US8616986B2 (en) | 2009-12-25 | 2010-12-15 | Shaft coupling mechanism |
US14/085,130 Division US9051973B2 (en) | 2009-12-25 | 2013-11-20 | Shaft coupling mechanism |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104246260A (zh) * | 2012-04-23 | 2014-12-24 | 奥依列斯工业株式会社 | 轴连接机构 |
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Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5895679B2 (ja) * | 2012-01-19 | 2016-03-30 | 日本精工株式会社 | トルク伝達用継手及び電動式パワーステアリング装置 |
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KR102584761B1 (ko) * | 2018-09-03 | 2023-10-06 | 에이치엘만도 주식회사 | 조향장치의 동력 전달부재 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS454409Y1 (ja) * | 1967-05-24 | 1970-02-28 | ||
GB2126690A (en) * | 1982-09-07 | 1984-03-28 | Koppers Co Inc | Flexible coupling |
JP2006177505A (ja) * | 2004-12-24 | 2006-07-06 | Oiles Ind Co Ltd | 電動式パワーステアリング装置用の軸連結機構 |
JP2006183676A (ja) * | 2004-12-24 | 2006-07-13 | Oiles Ind Co Ltd | 電動式パワーステアリング装置用の軸連結機構 |
JP2007145269A (ja) * | 2005-11-30 | 2007-06-14 | Oiles Ind Co Ltd | 電動式パワーステアリング装置用の軸連結機構 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3902333A (en) * | 1972-10-25 | 1975-09-02 | Anvar | Elastic couplings |
DE2848355C2 (de) * | 1978-11-08 | 1983-08-25 | Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt e.V., 5300 Bonn | Wellen-Naben-Verbindung |
US5176575A (en) * | 1986-05-12 | 1993-01-05 | Rexnord Corporation | Flexible coupling comprising modular components |
US4744783A (en) * | 1986-11-06 | 1988-05-17 | Reliance Electric Company | Flexible shaft coupling |
US5928083A (en) * | 1997-10-09 | 1999-07-27 | Ntn Corporation | One-way over-running flex coupling |
GB9812844D0 (en) | 1998-06-16 | 1998-08-12 | Lucas Ind Plc | Improvements relating to electrical power assisted steering |
US6440000B1 (en) * | 1999-12-06 | 2002-08-27 | Asa Electronic Industry Co., Ltd. | Universal joint |
JP4007159B2 (ja) | 2002-10-30 | 2007-11-14 | 株式会社ジェイテクト | 電動パワーステアリング装置及びジョイント |
JP2004149070A (ja) | 2002-10-31 | 2004-05-27 | Koyo Seiko Co Ltd | 電動パワーステアリング装置及びジョイント |
BRPI0512140A (pt) * | 2004-05-28 | 2008-02-12 | Oiles Industry Co Ltd | mecanismo de acoplamento de eixo |
JP2008183676A (ja) | 2007-01-30 | 2008-08-14 | Kanto Auto Works Ltd | インストルメントパネル表皮への破断用ラインの形成方法及びその装置 |
JP5168972B2 (ja) * | 2007-03-26 | 2013-03-27 | オイレス工業株式会社 | 電動式パワーステアリング装置用の軸連結機構 |
JP5169042B2 (ja) * | 2007-07-06 | 2013-03-27 | オイレス工業株式会社 | 電動式パワーステアリング装置用の軸連結機構 |
-
2009
- 2009-12-25 JP JP2009296416A patent/JP5428852B2/ja active Active
-
2010
- 2010-12-15 CN CN201080058677.0A patent/CN102686898B/zh active Active
- 2010-12-15 WO PCT/JP2010/007291 patent/WO2011077670A1/ja active Application Filing
- 2010-12-15 KR KR1020137028340A patent/KR101389128B1/ko active IP Right Grant
- 2010-12-15 US US13/518,968 patent/US8616986B2/en active Active
- 2010-12-15 BR BR112012014128A patent/BR112012014128B8/pt active IP Right Grant
- 2010-12-15 KR KR1020127016036A patent/KR101398046B1/ko active IP Right Grant
- 2010-12-15 EP EP10838910.7A patent/EP2518358A4/en not_active Withdrawn
- 2010-12-15 EP EP20140194131 patent/EP2860420A1/en not_active Withdrawn
-
2013
- 2013-11-20 US US14/085,130 patent/US9051973B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS454409Y1 (ja) * | 1967-05-24 | 1970-02-28 | ||
GB2126690A (en) * | 1982-09-07 | 1984-03-28 | Koppers Co Inc | Flexible coupling |
JP2006177505A (ja) * | 2004-12-24 | 2006-07-06 | Oiles Ind Co Ltd | 電動式パワーステアリング装置用の軸連結機構 |
JP2006183676A (ja) * | 2004-12-24 | 2006-07-13 | Oiles Ind Co Ltd | 電動式パワーステアリング装置用の軸連結機構 |
JP2007145269A (ja) * | 2005-11-30 | 2007-06-14 | Oiles Ind Co Ltd | 電動式パワーステアリング装置用の軸連結機構 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2518358A4 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104246260A (zh) * | 2012-04-23 | 2014-12-24 | 奥依列斯工业株式会社 | 轴连接机构 |
CN104246260B (zh) * | 2012-04-23 | 2016-08-24 | 奥依列斯工业株式会社 | 轴连接机构 |
DE102020214840A1 (de) | 2020-11-26 | 2022-06-02 | Robert Bosch Gesellschaft mit beschränkter Haftung | Lenksystem für ein Kraftfahrzeug mit schwenkelastischer Kupplung |
Also Published As
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EP2518358A4 (en) | 2014-03-05 |
KR20130135984A (ko) | 2013-12-11 |
KR101389128B1 (ko) | 2014-04-25 |
BR112012014128B1 (pt) | 2021-03-16 |
US20120264524A1 (en) | 2012-10-18 |
KR101398046B1 (ko) | 2014-05-27 |
EP2518358A1 (en) | 2012-10-31 |
US9051973B2 (en) | 2015-06-09 |
US20140080610A1 (en) | 2014-03-20 |
KR20120091379A (ko) | 2012-08-17 |
JP2011137488A (ja) | 2011-07-14 |
US8616986B2 (en) | 2013-12-31 |
EP2860420A1 (en) | 2015-04-15 |
CN102686898B (zh) | 2014-11-12 |
BR112012014128A2 (pt) | 2016-08-16 |
BR112012014128B8 (pt) | 2022-08-30 |
JP5428852B2 (ja) | 2014-02-26 |
CN102686898A (zh) | 2012-09-19 |
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