WO2005123485A1 - 車両用ステアリング装置及びその組立方法 - Google Patents
車両用ステアリング装置及びその組立方法 Download PDFInfo
- Publication number
- WO2005123485A1 WO2005123485A1 PCT/JP2005/011155 JP2005011155W WO2005123485A1 WO 2005123485 A1 WO2005123485 A1 WO 2005123485A1 JP 2005011155 W JP2005011155 W JP 2005011155W WO 2005123485 A1 WO2005123485 A1 WO 2005123485A1
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- WO
- WIPO (PCT)
- Prior art keywords
- steering
- shaft
- vehicle
- key lock
- lock collar
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/01—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens
- B60R25/02—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on the steering mechanism
- B60R25/021—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on the steering mechanism restraining movement of the steering column or steering wheel hub, e.g. restraining means controlled by ignition switch
- B60R25/02105—Arrangement of the steering column thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/16—Steering columns
-
- 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
Definitions
- the present invention relates to a vehicle steering device such as an electric power steering device including a sensor mechanism and an anti-theft device disposed behind the vehicle, and a method of assembling the same.
- a torsion bar connects an input shaft that receives steering wheel force and steering force and an output shaft that transmits steering force to wheels.
- the steering torque necessary for controlling the output of the auxiliary steering force is adjusted based on the detection result of the torsional torque of the torsion bar.
- the input shaft is usually assembled as follows. That is, after the column member is fixed to the sensor housing, the sensor coil of the sensor mechanism is further assembled, and then the sensor housing side force column member is inserted and assembled.
- the vehicle in order to prevent theft or the like of the vehicle, the vehicle is provided with an anti-theft device.
- the input shaft is fixed to the column member, and the steering wheel is maintained in a non-rotating state.
- a key lock roller having a plurality of holes is fixed to the outer peripheral surface of the input shaft by press fitting or the like.
- the driver removes the key, the shaft that moves in the radial direction toward the column member enters and engages with the hole of the key lock collar.
- the input shaft and the steering wheel can be kept non-rotating.
- a slip torque is determined by a shaft diameter and a key lock collar inner diameter. At this time, if the shaft diameter is increased, the slip torque becomes dull to the diameter. For this reason, when a product is put in a certain slip torque range, processing accuracy is not required, and the manufacturing cost can be reduced.
- the outer diameter of the key lock collar is larger than the inner diameter of the sensor coil mounted on the sensor housing.
- the worm wheel of the speed reduction mechanism larger than the inner diameter of the sensor coil is fitted to the output shaft.
- the input shaft and the output shaft are provided at both ends thereof with V larger than the inner diameter of the sensor coil, a worm wheel on the vehicle front side, and a key lock collar on the vehicle rear side.
- Patent Documents 1 to 3 when the electric power steering device is set up, the input shaft is divided into two parts, a front side and a rear side of the vehicle. While the key lock collar is fixed to the rear input shaft, the output shaft with the worm wheel attached (fitted) and the front input shaft are combined, and then inserted into the sensor housing to make the sub-assembly. Assemble your body.
- Patent Document 1 JP-A-2000-85596
- Patent Document 2 JP-A-2000-318626
- Patent Document 3 JP-A-2003-72566
- the present invention has been made in view of the above-described circumstances, and allows a key lock collar larger than the inner diameter of a sensor coil to be assembled without causing an increase in the number of parts. It is an object of the present invention to provide an electric power steering device and an assembling method thereof, which can facilitate the assembly of the key lock collar and can freely set the diameter of the key lock collar.
- a sensor mechanism having a sensor coil
- a key lock collar, and an anti-theft device disposed on the vehicle rear side of the sensor mechanism,
- the outer diameter of the key lock collar of the anti-theft device is larger than the inner diameter of the sensor coil of the sensor mechanism.
- a vehicle steering apparatus comprising a member having a diameter larger than an inner diameter of a sensor coil on a vehicle front side of the sensor mechanism,
- the key lock collar is assembled to the steering shaft.
- the steering shaft has a jig mounting portion for mounting a jig used when mounting the key lock collar.
- the jig mounting section is a diameter changing section that changes a diameter dimension formed on the steering shaft.
- the jig mounting portion is a concave groove provided on the steering shaft and formed by an annular flange portion.
- the jig mounting portion is a hole formed in the steering shaft.
- a sensor mechanism having a sensor coil
- the outer diameter of the key lock collar of the anti-theft device is larger than the inner diameter of the sensor coil of the sensor mechanism.
- An assembling method for assembling a vehicle steering device including a member having a diameter larger than an inner diameter of a sensor coil on a vehicle front side of the sensor mechanism,
- a vehicle wherein the key lock collar is mounted on the steering shaft is provided.
- a method of assembling a steering device for a vehicle is provided.
- the steering shaft has a jig mounting portion for mounting a jig used when mounting the key lock collar,
- the jig mounting portion When mounting the key lock collar, the jig mounting portion receives an axial load.
- the jig mounting portion is a diameter changing portion that changes a diameter dimension provided on the steering shaft.
- the jig mounting portion is a concave groove provided on the steering shaft and formed by an annular flange portion.
- the jig mounting portion is a hole formed in the steering shaft.
- a driven gear of a speed reducer is provided on the vehicle front side of the sensor mechanism
- a key lock collar of an anti-theft device is provided on the vehicle rear side of the sensor mechanism, and an outer diameter of the driven gear and the key lock collar is larger than an inner diameter of the sensor coil of the sensor mechanism.
- An electric power steering apparatus that generates an auxiliary steering torque from an electric motor coupler in accordance with a steering torque applied to a steering wheel, and reduces the auxiliary steering torque by the speed reducer and transmits the auxiliary steering torque to an output shaft of a steering mechanism.
- the driven gear is assembled to the steering shaft.
- ⁇ is the distance between the rear end of the housing and the front end of the key lock collar
- j8 is the front end of the housing and the front of the jig groove on the output shaft. The distance between the sides and
- the steering shaft has a jig mounting portion for mounting a jig used when mounting the driven gear.
- the jig mounting portion is an output shaft fixing screw formed on the steering shaft.
- the jig mounting portion is a diameter changing portion provided on the steering shaft and having a changed diameter.
- the jig mounting portion is a partial flat portion formed on the steering shaft.
- a driven gear of a speed reducer is provided,
- a key lock collar of an anti-theft device is provided on the vehicle rear side of the sensor mechanism, and an outer diameter of the driven gear and the key lock collar is larger than an inner diameter of the sensor coil of the sensor mechanism.
- the electric motor In response to the steering torque applied to the steering wheel, the electric motor An assembling method for assembling an electric power steering device that generates torque and reduces the auxiliary steering torque by the speed reducer and transmits the assisted steering torque to an output shaft of a steering mechanism, wherein the key lock collar is fixed to a steering shaft.
- a method for assembling an electric power steering device wherein the driven gear is assembled to the steering shaft.
- ⁇ is the distance between the rear end of the housing and the front end of the key lock collar
- j8 is the front end of the housing and the front of the jig groove on the output shaft. The distance between the sides and
- the steering shaft has a jig mounting portion for mounting a jig used when mounting the driven gear.
- the jig mounting portion is an output shaft fixing screw formed on the steering shaft.
- the jig mounting portion is a diameter changing portion that changes a diameter dimension provided on the steering shaft.
- the jig mounting portion is a partial flat portion formed on the steering shaft.
- An output shaft in which a member having a diameter larger than the inner diameter of the sensor coil is pre-installed on the vehicle front side of the sensor mechanism.
- the input shaft and the output shaft are combined and assembled on the inner diameter side of the sensor coil.
- a steering device for a vehicle characterized in that a fixing pin is passed through a torsion bar previously fixed to one of the two shafts, and the torsion bar is assembled to the other of the two shafts.
- the fixing of the shafts to one of the shafts is press-fitting.
- the fixing of the shafts to one of the shafts in advance is pin fixing.
- An assembling method for assembling a vehicle steering device comprising: an output shaft in which a member having a diameter larger than the inner diameter of the sensor coil is pre-installed on the vehicle front side of the sensor mechanism.
- the input shaft and the output shaft are combined and assembled on the inner diameter side of the sensor coil.
- a method for assembling a steering device for a vehicle characterized in that a fixing pin is passed through a torsion bar previously fixed to one of the two shafts and the torsion bar is assembled to the other of the two shafts.
- the fixing of the shafts to one of the shafts is press-fitting.
- the assembling method of the vehicle steering device according to the twenty-sixth aspect of the present invention is described.
- the fixing of the shafts to one of the shafts in advance is pin fixing.
- a large-diameter member for example, a worm wheel
- a steering shaft input shaft
- a key lock collar is assembled later. Therefore, a key lock collar larger than the inner diameter of the sensor coil can be easily assembled without increasing the number of parts.
- the assembling method of the present invention can be applied to a steering shaft (input shaft) having a Collabs structure.
- the assembling method of the present invention can be applied to a steering device that does not include a power assist mechanism and includes only a torque sensor mechanism.
- the large-diameter member is, for example, a yoke of a universal joint integrated with the output shaft.
- a driven gear is later assembled to a steering shaft in which a key lock collar is fixed and a sensor coil is inserted. For this reason, it is possible to assemble a key lock collar larger than the inner diameter of the sensor coil without increasing the number of parts, thereby facilitating the assembly of the worm wheel, Diameter can be set freely
- the driven gear can be retrofitted! Therefore, the assembling method of the present invention can also be applied to a steering shaft (input shaft) having a Collabs structure.
- the input shaft and the output shaft are each larger than the inner diameter of the sensor coil intermediate the input shaft and the output shaft! / Even if it has a key lock collar on the rear side of the vehicle and a worm wheel on the front side of the vehicle, it is easy to use a key lock collar larger than the inner diameter of the sensor coil without increasing the number of parts. Can be assembled.
- FIG. 1 is a longitudinal sectional view of an electric power steering device according to a first embodiment of the present invention.
- FIG. 2A is a longitudinal sectional view of an electric power steering device according to a second embodiment of the present invention.
- FIG. 2B is a transverse sectional view taken along the line bb in FIG. 2A.
- FIG. 3 is a longitudinal sectional view of an electric power steering device according to a third embodiment of the present invention.
- FIG. 4A is a longitudinal sectional view of an electric power steering device according to a fourth embodiment of the present invention.
- FIG. 4B is a transverse sectional view taken along the line bb in FIG. 4A.
- FIG. 5 is a longitudinal sectional view of an electric power steering device according to a fifth embodiment of the present invention.
- FIG. 6 is a longitudinal sectional view of a vehicle steering device according to a sixth embodiment of the present invention.
- FIG. 7 is a longitudinal sectional view of a vehicle steering device according to a seventh embodiment of the present invention.
- FIG. 8 is a longitudinal sectional view of a vehicle steering device according to an eighth embodiment of the present invention.
- FIG. 9A is a longitudinal sectional view of an electric power steering device according to a ninth embodiment of the present invention.
- FIG. 9B is a partial longitudinal sectional view of the electric power steering device according to the reference example of the ninth embodiment.
- FIG. 10 is a longitudinal sectional view of an electric power steering device according to a ninth embodiment of the present invention, showing a step of fixing a worm wheel and a state in which a jig is mounted.
- FIG. 11 is a longitudinal sectional view of an electric power steering device according to a modification of the ninth embodiment of the present invention.
- FIG. 12 is a longitudinal sectional view of an electric power steering device according to a tenth embodiment of the present invention.
- FIG. 13 is a longitudinal sectional view of an electric power steering device according to an eleventh embodiment of the present invention.
- FIG. 14A is a longitudinal sectional view of an electric power steering device according to a twelfth embodiment of the present invention.
- FIG. 14B is a sectional view taken along line bb in FIG. 14A.
- FIG. 15 is a longitudinal sectional view of an electric power steering device according to a thirteenth embodiment of the present invention.
- FIG. 16 is an assembly view of the electric power steering device shown in FIG. 15, which is a longitudinal sectional view on the input shaft side.
- FIG. 17 is an assembly view of the electric power steering device shown in FIG. 15, which is a longitudinal sectional view on the output shaft side.
- FIG. 18 is a longitudinal sectional view of an input shaft according to a first modification of the thirteenth embodiment.
- FIG. 19 is a longitudinal sectional view of an input shaft according to a second modification of the thirteenth embodiment.
- FIG. 20 is a longitudinal sectional view of an input shaft according to a third modification of the thirteenth embodiment.
- FIG. 21 is a longitudinal sectional view of an electric power steering device according to a fourteenth embodiment of the present invention.
- FIG. 22A is a longitudinal sectional view of a steering device according to a fifteenth embodiment of the present invention.
- FIG. 22B is a sectional view taken along the line bb in FIG. 22A.
- FIG. 1 is a longitudinal sectional view of an electric power steering device according to a first embodiment of the present invention.
- an assembled electric power steering device will be described, and then, a method of assembling the electric power steering device will be described.
- an input shaft 3 of a steering shaft is rotatably supported via a bearing 2 on a steering column 1 having a non-collapse structure.
- reference numeral "3a” indicates a mounting screw for mounting a steering wheel (not shown).
- the key lock collar 4 of the anti-theft device is press-fitted into the intermediate portion of the input shaft 3 via the slip ring 5.
- a shaft (not shown) that moves in and out of the hole la of the steering column 1 in the radial direction enters the hole 4a of the key lock collar 4 and engages therewith. Thereby, the input shaft 3 and the steering wheel (not shown) can be kept non-rotating.
- the slip ring 5 allows relative rotation with respect to the input shaft 3 when the key lock collar 4 is subjected to a certain amount of tonnolek.
- a step S (diameter change portion) formed to have a smaller diameter than other portions is provided on the front side of the input shaft 3 in the vehicle.
- An output shaft 6 is connected to the front side of the input shaft 3 via a torsion bar 7 described later.
- the output shaft 6 passes through a gear housing 8 and a cover 9, and a steering gear (not shown) is connected to the front side of the vehicle via a universal joint (not shown).
- the output shaft 6 is rotatably supported by cover bearings 9a and 9b.
- a base end of the torsion bar 7 is press-fitted and fixed to the front side of the input shaft 3 in the vehicle.
- the torsion bar 7 extends inside the hollow output shaft 6, and its tip is fixed to an end of the output shaft 6 by a fixing pin 10.
- a detection groove 11 for the torque sensor mechanism is formed on the vehicle rear side of the output shaft 6, a detection groove 11 for the torque sensor mechanism is formed.
- a sleeve 12 of a torque sensor mechanism is disposed radially outward of these detection grooves 11.
- the rear end of the sleeve 12 is fixed to the front end of the input shaft 3 by caulking or the like.
- a coil 13, a substrate, and the like are provided radially outside the sleeve 12.
- the output shaft 6 is fitted with a worm wheel 15 fitted to a worm 14 which is a drive shaft of an electric motor (not shown).
- the steering force generated by the driver steering a steering wheel (not shown) is not shown via the input shaft 3, the torsion bar 7, the output shaft 6, and the rack-and-pion type steering device. It is transmitted to the steered wheels. Further, the torque of the electric motor is transmitted to the output shaft 6 via the worm 14 and the worm wheel 15, and by appropriately controlling the torque and the rotation direction of the electric motor, the steering assist for the output shaft 6 can be appropriately adjusted. Torque is applied.
- the input shaft 3 is assembled in advance with the gear housing 8 and the like to form a sub-assembly body.
- the worm wheel 15 is fitted to the output shaft 6, the torsion bar 7 and the input shaft 3 are combined, and the steering shaft (the input shaft 3 and the output shaft 6) has a small diameter sensor coil 13 inside diameter. Has been communicated.
- a key lock collar 4 is assembled to the input shaft 3 of the sub-assembly via a slip ring 5 by press fitting or the like.
- the steering column 1 is connected to the gear housing 8 of the sub-assembly body to complete the electric power steering device.
- a small-diameter sensor coil 13 is inserted in the middle of the steering shaft (the input shaft 3 and the output shaft 6), and a worm wheel 15 having a larger diameter than the coil 13 is provided at both ends.
- a key lock collar 4 larger than the coil 13 is installed. In such a case, the key lock collar 4 is later attached to the steering shaft (input shaft 3 and output shaft 6) through which the form wheel 15 is fixed and the sensor coil 13 is passed.
- a key lock collar 14 larger than the inner diameter of the sensor coil 13 can be easily assembled without increasing the number of parts.
- a step S (diameter change portion) is provided on the vehicle front side of the input shaft 3 by forming the input shaft 3 into a small diameter.
- the step S is a jig mounting portion for mounting a jig used when mounting the key lock collar.
- the axial load at the time of press-fitting may be pulled by the steering wheel (not shown) using the steering wheel mounting screw 3a. .
- the key lock collar 4 is first passed through the input shaft 3 before passing through the slip ring 5, and the key lock collar 4 is steered to cover the slip ring at a predetermined position. Press-fit by moving to the side (not shown).
- the step S may receive a press-fit load on the end surface of the steering wheel mounting screw 3a, which is not necessarily required.
- FIG. 2A is a longitudinal sectional view of an electric power steering device according to a second embodiment of the present invention
- FIG. 2B is a transverse sectional view taken along line bb of FIG. 2A.
- the key lock collar 4 that does not use a slip ring is directly pressed into the input shaft 3.
- the input shaft 3 is assembled in advance with the gear housing 8 and the like to constitute a sub-assembly body. That is, in the subassembly, the worm wheel 15 is fitted to the output shaft 6, the torsion bar 7 and the input shaft 3 are combined, and the steering shaft (the input shaft 3 and the output shaft 6) has a small diameter sensor coil. It has 13 inner diameters.
- the input shaft 3 of the sub-assembly body is directly press-fitted to the input shaft 3 so that the input shaft 3 and the key lock collar 4 cannot be rotated relative to each other.
- the small-diameter sensor coil 13 is inserted in the middle of the steering shaft (the input shaft 3 and the output shaft 6), and the worm wheel having the larger diameter than the coil 13 is provided at both ends. 15 and a key lock collar 4 larger than the coil 13 are installed.
- the key lock collar 4 is attached later to the steering shaft (input shaft 3 and output shaft 6) through which the worm wheel 15 is fixed and the sensor coil 13 passes.
- a key larger than the inner diameter of the sensor coil 13 without increasing the number of points The lock collar 4 can be easily assembled.
- a step S for receiving an axial load when press-fitting the key lock collar 4 is formed on the vehicle front side of the input shaft 3 by forming the small diameter.
- FIG. 3 is a longitudinal sectional view of an electric power steering device according to a third embodiment of the present invention.
- key lock collar 4 is directly fixed to input shaft 3 by welding without using a slip ring.
- the input shaft 3 is assembled in advance with the gear housing 8 and the like to form a sub-assembly body. That is, in the subassembly, the worm wheel 15 is fitted to the output shaft 6, the torsion bar 7 and the input shaft 3 are combined, and the steering shaft (the input shaft 3 and the output shaft 6) has a small diameter sensor coil. It has 13 inner diameters.
- a key lock collar 4 force is directly attached to the input shaft 3 of the sub-assembly body and fixed by welding, whereby the input shaft 3 and the key lock collar 4 are configured so as to be unable to rotate relative to each other. .
- the small-diameter sensor coil 13 is inserted in the middle of the steering shaft (the input shaft 3 and the output shaft 6), and the worm wheel having the larger diameter than the coil 13 is provided at both ends. 15 and a key lock collar 4 larger than the coil 13 are installed.
- the key lock collar 4 is later assembled to the steering shaft (the input shaft 3 and the output shaft 6) through which the worm wheel 15 is fixed and the sensor coil 13 is passed, thereby increasing the number of parts.
- the key lock collar 4 larger than the inner diameter of the sensor coil 13 can be easily assembled.
- a step S for receiving an axial load of the key lock collar 4 is provided on the vehicle front side of the input shaft 3 by forming the input lock 3 into a small diameter.
- FIG. 4A is a longitudinal sectional view of an electric power steering device according to a fourth embodiment of the present invention
- FIG. 4B is a transverse sectional view taken along line bb of FIG. 4A.
- the key lock collar is formed by caulking without using a slip ring.
- the input shaft 3 is assembled in advance with the gear housing 8 and the like to form a sub-assembly body. That is, in the subassembly, the worm wheel 15 is fitted to the output shaft 6, the torsion bar 7 and the input shaft 3 are combined, and the steering shaft (the input shaft 3 and the output shaft 6) has a small diameter sensor coil. It has 13 inner diameters.
- the key lock collar 4 is directly assembled to the input shaft 3 of the sub-assembly body, and the central portion of the key lock collar 4 is caulked to the input shaft 3 and fixed to the input shaft 3 by this caulking. Have been.
- the input shaft 3 and the key lock collar 4 are configured so as not to rotate relative to each other.
- the small-diameter sensor coil 13 is inserted in the middle of the steering shaft (the input shaft 3 and the output shaft 6), and the worm wheel having the larger diameter than the coil 13 is provided at both ends. 15 and a key lock collar 4 larger than the coil 13 are installed.
- the key lock collar 4 is attached later to the steering shaft (input shaft 3 and output shaft 6) through which the worm wheel 15 is fixed and the sensor coil 13 passes.
- the key lock collar 4 that is larger than the inner diameter of the sensor coil 13 without increasing the number of points can be easily assembled.
- a step S for receiving a load in the axial direction of the key lock collar 4 is provided on the vehicle front side of the input shaft 3 by forming the input shaft 3 into a small diameter. .
- FIG. 5 is a longitudinal sectional view of an electric power steering device according to a fifth embodiment of the present invention. [0101]
- the basic structure is the same as that of the first embodiment, and only different points will be described.
- the steering column having the Collabs structure includes an upper column 21 on the rear side of the vehicle and a lower column 22 on the front side of the vehicle that is fitted to the upper column 21 in a collabsable manner.
- Column 21 can collabs with lower column 22 and move forward of the vehicle.
- the input shaft also acts as a force with the hollow upper shaft 31 on the rear side of the vehicle and the solid lower shaft 32 on the front side of the vehicle slidably fitted thereto. , The vehicle can move forward with respect to the lower shaft 32.
- the key lock collar 4 of the anti-theft device is press-fitted into the middle large-diameter portion of the hollow upper shaft 31 via the slip ring 5.
- a shaft (not shown) that moves in and out of the hole 21a of the upper column 21 in the radial direction enters the hole 4a of the key lock collar 4 and engages therewith.
- the input shaft and the steering wheel (not shown) composed of the lower shaft 32 and the lower shaft 32 can be kept non-rotating.
- the input shafts (31, 32) are assembled in advance with the gear housing 8 and the like to form a sub-assembly body. That is, in the sub-assembly, the worm wheel 15 is fitted to the output shaft 6, the torsion bar 7 and the input shafts (31, 32) are combined, and the steering shaft (the input shafts (31, 32) and the output shaft 6) are combined. ) Passes through the small diameter sensor coil 13 inner diameter.
- a key lock collar 14 is attached to the input shaft (31) of the sub-assembly via a slip ring 5 by press-fitting or the like.
- the steering columns 21, 22 are connected to the gear housing 8 of the sub-assembly body to complete the electric power steering device.
- a small-diameter sensor coil 13 is inserted between the steering shaft (the input shafts (31, 32) and the output shaft 6), and both ends of the small-diameter sensor coil 13 have a larger diameter than the coil 13. ⁇
- the ohm wheel 15 and the key lock collar 4 larger in diameter than the coil 13 are installed.
- the worm wheel 15 is fixed and the sensor coil 13 is inserted through the switch. Since the key lock collar 4 is attached to the tearing shaft (input shafts (31, 32) and output shaft 6) later, the inner diameter of the sensor coil 13 does not increase the number of parts. Large key lock collar 4 can be easily assembled.
- the key lock collar 4 is mounted on the input shaft (31, 32) when the key lock collar 4 is mounted on the input shaft (31, 32).
- the load is generated in the axial direction due to the axial press-fitting), which is received by the inclined portion of the hollow upper shaft 31 (the portion enclosed by an oval in FIG. 5) and the edge (the portion enclosed by a circle in FIG. 5) It is possible to prevent an extra load from being transmitted to the sensor mechanism connected to the input shafts (31, 32) and the Collabs structure composed of the upper shaft 31 and the lower shaft 32.
- FIG. 6 is a longitudinal sectional view of a vehicle steering device according to a sixth embodiment of the present invention.
- the steering device according to the present embodiment does not include the power assist mechanism, but includes only the torque sensor mechanism. Also in this case, the assembling method of the present invention can be applied.
- a torque sensor mechanism is provided inside housing 8. That is, a detection groove 11 for the torque sensor mechanism is formed on the vehicle rear side of the output shaft 6, and a sleeve 12 for the torque sensor mechanism is disposed radially outward of the detection groove 11. Yes.
- the front end of the sleeve 12 is fixed to the rear end of the output shaft 6 by caulking or the like.
- a coil 13, a substrate, and the like are provided radially outside the sleeve 12.
- the output shaft 6 is supported by a bearing 8a and the input shaft 3 is supported by a bearing 8b.
- the output shaft 6 is connected with a free hand 40 force S, and the yoke 41 of the free hand 40 is formed integrally with the output shaft 6.
- the yoke 41 is connected to the other yoke 43 via a cross shaft 42, and the yoke 43 is connected to a steering gear (not shown).
- the vehicle steering device with the torque sensor mechanism configured as described above is assembled.
- the input shaft 3 is pre-assembled with the housing 8 and the like to form a sub-assembly body. That is, in the subassembly, the output shaft 6 and the yoke 41 of the universal joint 40 are integrally formed, and the output shaft 6 is combined with the torsion bar 7 and the input shaft 3 to form a steering shaft (input shaft). 3 and the output shaft 6) pass through the small diameter sensor coil 13 inner diameter.
- a key lock collar 4 is attached to the input shaft 3 of the sub-assembly via a slip ring 5 by press fitting or the like.
- the steering column 1 is connected to the housing 8 of the sub-assembly, and the vehicle steering device with the torque sensor mechanism is completed.
- a small-diameter sensor coil 13 is inserted in the middle of the steering shaft (the input shaft 3 and the output shaft 6), and the universal joint 4 having a larger diameter than the coil 13 is provided at both ends.
- a yoke 41 of 0 and a key lock collar 4 larger in diameter than the coil 13 are attached.
- the key lock collar 4 is later assembled to the steering shaft (the input shaft 3 and the output shaft 6), which has the yoke 41 of the universal joint 40 integrally and passes through the sensor coil 13. Therefore, the key lock collar 4 that is larger than the inner diameter of the sensor coil 13 and that does not increase the number of parts can be easily assembled.
- a step S (diameter change portion) is provided on the vehicle front side of input shaft 3 by forming the input shaft 3 into a small diameter.
- the step S is the axial load that occurs when the key lock collar 4 is assembled to the input shaft 3 (the key lock collar 4 is assembled to the input shaft 3 because the axial Generated), and no extra load is transmitted to the sensor mechanism connected to the input shaft 3.
- FIG. 7 is a longitudinal sectional view of a vehicle steering device according to a seventh embodiment of the present invention.
- annular flange portion 51 is formed on steering shaft 3 (input shaft), and a concave groove 52 is formed on the front side of this annular flange portion 51 in the vehicle.
- the concave groove 52 is A jig mounting section for mounting a jig used when mounting the key lock collar 4.
- annular flange portion 51 and the concave groove 52 are provided so that the key lock collar 4 can be attached to the steering wheel (not shown in the drawing, according to the M rule, by the axial load generated when the input shaft 3 is assembled). Since the assembly of 4 is an axial press-fit), the extra load cannot be transmitted to the sensor mechanism connected to the input shaft 3.
- the axial load at the time of press-fitting may be pulled by the steering wheel (not shown) using the steering wheel mounting screw 3a. Good.
- the key lock collar 4 is first passed through the input shaft 3 before passing through the slip ring 5, and the key lock collar 4 is swung so as to cover the slip ring at a predetermined position (shown in the figure). Press in by moving to the (omitted) side.
- the annular flange portion 51 and the concave groove 52 may receive a press-fit load on the end face of the steering wheel mounting screw 3a, which is not necessarily required.
- FIG. 8 is a longitudinal sectional view of a vehicle steering device according to an eighth embodiment of the present invention.
- hole 61 is formed in steering shaft 3 (input shaft). This hole
- Reference numeral 61 denotes a jig mounting portion for mounting a jig used when the key lock collar 4 is mounted.
- the hole 61 has an axial load generated when assembling the key lock collar 4 to the input shaft 3 from the steering wheel (not shown) side. Directional press-fitting), so that the extra load is not transmitted to the sensor mechanism connected to the input shaft 3.
- the axial load at the time of press fitting may be pulled and received on the steering wheel (not shown) side by using the steering wheel mounting screw 3a.
- the hole 61 may receive a press-fit load on the end surface of the steering wheel mounting screw 3a, which is not always necessary!
- FIG. 9A is a longitudinal sectional view of an electric power steering device according to a ninth embodiment of the present invention
- FIG. 9B is a partial longitudinal sectional view of the electric power steering device according to the reference example of the ninth embodiment.
- an input shaft 103 of a steering shaft is rotatably supported via a bearing 102 on a steering column 101 having a non-collapse structure.
- a key lock collar 104 of an anti-theft device is press-fitted into the intermediate portion of the input shaft 103 via a slip ring 105.
- a shaft (not shown) that moves in and out of the hole 10 la of the steering column 101 in the radial direction enters the hole 104 a of the key lock collar 104 and engages with the input shaft.
- 103 and the steering wheel (not shown) can be kept non-rotating.
- slip ring 105 allows relative rotation with respect to input shaft 103.
- An output shaft 106 is connected to a front side of the input shaft 103 via a torsion bar 107 described later.
- the output shaft 106 passes through a housing 108 and a cover 109, and a steering gear (not shown) is connected to a front side of the vehicle via a universal joint (not shown).
- the output shaft 106 is rotatably supported by bearings 109a and 109b of a cover 109.
- a base end of a torsion bar 107 is press-fitted and fixed to the front side of the vehicle with respect to the input shaft 103.
- the torsion bar 107 extends inside the hollow output shaft 106, and its distal end extends out. It is fixed to an end of the force shaft 106 by a fixing pin 110.
- a detection groove 111 for the torque sensor mechanism is formed on the vehicle rear side of the output shaft 106, and a sleeve 112 for the torque sensor mechanism is arranged radially outward of the detection groove 111. Is done.
- the rear end of the sleeve 112 is fixed to the front end of the input shaft 103 by caulking or the like.
- a sensor coil 113, a substrate, and the like are provided radially outward of the sleeve 112.
- the output shaft 106 is fitted with a worm wheel 115 that is fitted with a worm 114 that is a drive shaft of an electric motor (not shown).
- the worm wheel 115 is configured to be press-fitted and fitted to the large-diameter portion 106a of the output shaft 106, and to be fixed so as not to rotate relatively.
- a large diameter is formed on the vehicle rear side of the worm wheel 115 of the output shaft 106 and on the vehicle front side of the sensor coil 113, so that a step 100S (diameter change portion) is formed. Is provided.
- the steering force generated by the driver steering the steering wheel (not shown) is transmitted via the input shaft 103, the torsion bar 107, the output shaft 106, and the rack-and-pione steering device. Not transmitted to the steered wheels. Further, the torque of the electric motor is transmitted to the output shaft 106 via the worm 114 and the worm wheel 115, and by appropriately controlling the torque and the rotation direction of the electric motor, an appropriate steering of the output shaft 106 is achieved. An auxiliary torque is applied.
- the key lock collar 104 is press-fitted into the input shaft 103 of the steering shaft via the slip ring 105. Assembled by
- the steering shaft (the input shaft 103 and the output shaft 106) with the key lock collar 104 is inserted into the housing 108 in the direction of the arrow shown in the figure, and the sensor coil of the sensor mechanism integrated with the housing 108. Passed through the inside diameter of 113.
- the worm wheel 115 is press-fitted and fitted into the large-diameter portion 106a of the output shaft 106 of the steering shaft, and is fixed so as not to rotate relatively.
- a small-diameter sensor coil 113 is inserted in the middle of the steering shaft (the input shaft 103 and the output shaft 106), and the worm wheel 115 having a larger diameter than the coil 113 is provided at both ends.
- a key lock collar 104 larger in diameter than the coil 113 is attached.
- the worm wheel 115 can be attached later to the steering shaft (the input shaft 103 and the output shaft 106) through which the key lock collar 104 is fixed and the sensor coil 113 is passed. Therefore, it is possible to assemble the key lock collar 104 having a larger diameter than the sensor coil 113 without increasing the number of parts, thereby facilitating the assembling of the worm wheel 115.
- the diameter of the lock collar 104 can be freely set.
- a large diameter is formed on the vehicle rear side of the worm wheel 115 of the output shaft 106 and on the vehicle front side of the sensor coil 113, so that a step 100S (diameter change portion) is formed. ) Is provided. Further, a jig concave groove 117 is formed on the rear side of the step 100S.
- the step 100S (the jig concave groove 117) can receive the axial load, and can prevent an excessive load from being transmitted to the sensor mechanism connected to the output shaft 106.
- the part formed on the front side of the vehicle of the sensor coil 113 that can receive the axial load at the time of press-fitting using the output shaft fixing screw The axial load at the time of press fitting may be received by the target flat portion.
- the input shaft 103 of the steering shaft is formed hollow, and the worm wheel 115 is retrofitted as described above. Therefore, instead of using the key lock collar 104, the hollow input shaft 103 is formed with a large diameter, and a lock hole 103a is formed in the large diameter portion, thereby forming the key lock collar integrally. May be.
- FIG. 10 is a longitudinal sectional view of an electric power steering apparatus according to a ninth embodiment of the present invention, showing a step of fixing a worm wheel, and showing a state where a jig is mounted.
- FIG. 9 reference numeral “ ⁇ ” denotes a distance between the vehicle rear end of the housing 108 and the vehicle front end of the key lock collar 104, and reference numeral “j8” denotes the housing 108. This is the distance between the front end of the vehicle and the front side surface of the jig groove 117 of the output shaft 106, and is set to “ ⁇ >
- the vehicle front side surface of the jig concave groove 117 of the output shaft 106 also moves to the front side of the vehicle by the distance "hi", so that "a> j8".
- the power can also be exposed.
- the above jig 100G can be mounted in the gap of "oc-j8".
- the worm wheel 115 is press-fitted and fitted into the large-diameter portion 106a of the output shaft 106, and is fixed so as not to rotate relatively.
- FIG. 11 is a longitudinal sectional view of an electric power steering device according to a modification of the ninth embodiment of the present invention.
- the housing 108 and the cover 109 are configured to be divided on the vehicle rear side with respect to the ninth embodiment.
- the worm gear 114 and the worm wheel 114 are housed in the cover 109 on the front side of the vehicle.
- a bearing 108a on the rear side of the vehicle is interposed between the housing 108 and the output shaft 106.
- a worm wheel 115 is fitted to the output shaft 106 of the steering shaft, and is fixed so as not to rotate relatively by tightening a nut 116 via a bearing 109a.
- FIG. 12 is a longitudinal sectional view of the electric power steering device according to the tenth embodiment of the present invention.
- the steering column having the Collabs structure includes an upper column 121 on the rear side of the vehicle and a lower column 122 on the front side of the vehicle that is fitted to the upper column 121 so as to be collabsible.
- the upper column 121 collabs with the lower column 122 so that it can move forward of the vehicle.
- the input shaft also acts as a force with the hollow upper shaft 131 on the rear side of the vehicle and the solid lower shaft 132 on the front side of the vehicle slidably fitted thereto.
- the reference numeral 131 indicates that the lower shaft 132 can move forward of the vehicle.
- a key lock collar 104 of an anti-theft device is welded to the middle large-diameter portion of the hollow upper shaft 131.
- a shaft (not shown) that moves in and out of the hole 121a of the upper column 121 in the radial direction enters the hole 104a of the key lock collar 104 to engage therewith.
- the input shafts (131, 132) and the steering wheel (not shown) can be kept non-rotating.
- the output shaft 106 is rotatably supported by a bearing 108a on the housing 108 side and a bearing 109a on the cover 109 side.
- a serration portion 106b is formed on the output shaft 106, and the worm wheel 115 is adapted to be serration-fitted.
- the key lock collar 104 is attached to the upper shaft 131 by welding or the like.
- the steering shaft (the input shafts 131, 132 and the output shaft 106) with the key lock collar 104 is inserted into the housing 108 in the direction of the arrow shown in the figure, and the sensor coil 113 of the sensor mechanism integrated with the housing 108. Through the inside diameter.
- the worm wheel 115 is engaged with the serration portion 106b of the output shaft 106 of the steering shaft by serration, and the nut 116 is tightened via the bearing 109a, so that the worm wheel 115 is fixed so as not to rotate relatively.
- the steering column (121, 122) and the cover 109 are connected to both sides of the housing 108, and the electric power steering device is completed.
- a small-diameter sensor coil 113 is inserted in the middle of the steering shaft (the input shafts 131 and 132 and the output shaft 106), and both ends of the small-diameter sensor coil 113 have a larger diameter than the coil 113.
- a worm wheel 115 and a key lock collar 104 larger than the coil 113 are installed.
- the key lock collar 104 is fixed, and the worm wheel 115 is attached to the steering shaft (manual power shafts 131, 132 and the output shaft 106) through the sensor coil 113 later.
- the key lock collar 104 can be freely set.
- the worm wheel 115 is serration-fitted to the output shaft 106, and since no axial load is generated at the time of assembly, the worm wheel 115 is attached to the output shaft 106 as in the ninth embodiment. There is no need to provide a step 100S (diameter change part)!
- An O-ring 140 is provided on the vehicle rear side of the ser- vice portion 106b of the output shaft 106. As a result, the O-ring 140 is sandwiched between the output shaft 106 and the worm wheel 115 so as to prevent rattling between the output shaft 106 and the worm wheel 115.
- FIG. 13 is a longitudinal sectional view of the electric power steering device according to the eleventh embodiment of the present invention.
- worm wheel 115 is fitted to large-diameter portion 106a of output shaft 106 via slip ring 150 functioning as a torque limiter.
- a key lock collar 104 is attached to the input shaft 103 of the steering shaft by welding or the like.
- the steering shaft (the input shaft 103 and the output shaft 106) with the key lock collar 104 is inserted into the housing 108, and the inner diameter of the sensor coil 113 of the sensor mechanism integrated with the housing 108 is passed through.
- the worm wheel 115 is press-fitted into the large-diameter portion 106a of the output shaft 106 of the steering shaft via the slip ring 150, and is fixed so as not to rotate relatively.
- the steering column 101 and the cover 109 are connected to both sides of the housing 108 to complete the electric power steering device.
- a small-diameter sensor coil 113 is inserted in the middle of the steering shaft (the input shaft 103 and the output shaft 106), and the worm wheel 115 having a larger diameter than the coil 113 is provided at both ends.
- a key lock collar 104 larger in diameter than the coil 113 is attached.
- the worm wheel 115 is later assembled to the steering shaft (the input shaft 103 and the output shaft 106) through which the key lock collar 104 is fixed and the sensor coil 113 is passed. Therefore, the key lock collar 104 larger than the inner diameter of the sensor coil 113 can be assembled without increasing the number of parts. Therefore, the assembling of the ohmic wheel 115 can be facilitated. Further, the diameter of the key lock collar 104 can be freely set.
- a large diameter is formed on the vehicle rear side of the worm wheel 115 of the output shaft 106 and on the vehicle front side of the sensor coil 113, so that a step 100S (diameter change portion) is formed. ) Is provided.
- the step 100S can receive an axial load generated when the worm wheel 115 is assembled to the output shaft 106 (since the worm wheel 115 is assembled to the output shaft 106 because it is press-fitted in the axial direction). Extra load can be prevented from being transmitted to the sensor mechanism connected to the shaft 106.
- the output shaft fixing screw is used.
- a partial flat portion formed on the vehicle front side of the sensor coil 113 that can receive the axial load at the time of press-fitting is used. It may receive directional loads. (Twelfth Embodiment)
- FIG. 14A is a longitudinal sectional view of an electric power steering device according to a twelfth embodiment of the present invention
- FIG. 14B is a sectional view taken along the line bb of FIG. 14A.
- the steering column having the Collabs structure includes an upper col- lam 121 on the rear side of the vehicle and a lower column 122 on the front side of the vehicle that is fitted to the upper column 121 so as to be collabsible.
- Column 121 collabs with lower column 122 and can move forward of the vehicle.
- the input shaft also acts as a force with a hollow upper shaft 131 on the rear side of the vehicle and a solid lower shaft 132 slidably fitted on the upper shaft 131, and in the event of a secondary collision, the upper shaft 131 The 131 can move forward of the vehicle with respect to the lower shaft 132.
- the key lock collar 104 of the anti-theft device is press-fitted into the middle large-diameter portion of the hollow upper shaft 131.
- a shaft (not shown) that moves in and out of the hole 121a of the upper column 121 in the radial direction enters and engages with the hole 104a of the key lock collar 104.
- the input shafts (131, 132) and the steering wheel (not shown) can be kept non-rotating.
- the output shaft 106 is rotatably supported by a bearing 108a on the housing 108 side and a bearing 109a on the cover 109 side.
- the output shaft 106 is formed with a tapered portion 106c so that the worm wheel 115 is taperedly fitted. Due to the taper fitting, the output shaft 106 and the worm wheel 115 cannot be relatively rotated by the frictional force between the two.
- a pair of partial flat portions 160 and 60 are formed on the vehicle rear side of the tapered portion of the output shaft 106.
- the nut 116 can be tightened without applying an excessive torsional torque to the sensor mechanism.
- the key lock collar 104 When assembling the electric power steering device, first, the key lock collar 104 is attached to the upper shaft 131 by welding or the like. [0194] The steering shaft (the input shafts 131, 132 and the output shaft 106) with the key lock collar 104 is inserted into the housing 108 in the direction of the arrow shown in the figure, and the sensor coil 113 of the sensor mechanism integrated with the housing 108 is provided. Through the inside diameter.
- the worm wheel 115 is taperedly fitted to the tapered portion 106c of the output shaft 106 of the steering shaft.
- the nut 116 can be tightened without applying an excessive torsional torque to the sensor mechanism.
- a small-diameter sensor coil 113 is inserted in the middle of the steering shaft (the input shafts 131 and 132 and the output shaft 106), and both ends of the small-diameter sensor coil 113 have a larger diameter than the coil 113.
- a worm wheel 115 and a key lock collar 104 larger than the coil 113 are installed.
- the key lock collar 104 is fixed, and the worm wheel 115 is attached to the steering shaft (manual power shafts 131, 132 and the output shaft 106) through the sensor coil 113 later.
- the key lock collar 104 can be freely set.
- FIG. 15 is a longitudinal sectional view of the electric power steering device according to the thirteenth embodiment of the present invention.
- an input shaft 203 of a steering shaft is rotatably supported by a steering column 201 having a non-collapse structure via a bearing 202.
- a key lock collar 204 of an anti-theft device is press-fitted into a middle portion of the input shaft 203 via a slip ring 205.
- a key bolt (not shown) that moves radially out of the hole 208a of the gear housing 208 enters and engages with the hole 204a of the key lock collar 204.
- the input shaft 203 and the steering wheel (not shown) can be kept non-rotating.
- slip ring 205 allows relative rotation with respect to input shaft 203.
- An output shaft 206 is connected to the front side of the input shaft 203 via a torsion bar 207 described later.
- the output shaft 206 is inserted through a gear housing 208 and a cover 209, and a steering gear (not shown) is connected to a front side of the vehicle via a universal joint (not shown).
- the output shaft 206 is rotatably supported by cover bearings 209a and 209b.
- a base end of a torsion bar 207 is press-fitted and fixed to the front side of the vehicle with respect to the input shaft 203.
- the torsion bar 207 extends inside a hollow output shaft 206, and a tip of the torsion bar 207 is output. It is fixed to an end of the shaft 206 by a fixing pin 210.
- a detection groove 211 for the torque sensor mechanism is formed on the vehicle rear side of the output shaft 206.
- a sleeve 212 of a torque sensor mechanism is arranged radially outward of these detection grooves 211.
- the rear end of the sleeve 212 on the vehicle is fixed to the front end of the input shaft 203 by caulking or the like.
- a coil 213, a substrate, and the like are provided radially outward of the sleeve 212.
- the steering force generated by the driver steering the steering wheel is transmitted via the input shaft 203, the torsion bar 207, the output shaft 206, and the rack and pinion type steering device (not shown). It is transmitted to the steered wheels.
- the torque of the electric motor is transmitted to the output shaft 206 via the worm 214 and the worm wheel 215.
- the output shaft is controlled.
- An appropriate steering assist torque is given to 206.
- reference numeral 216 denotes a seal member. In the present embodiment, in order to prevent dust or the like from entering the torque sensor mechanism, the seal member 216 is provided between the torque sensor mechanism and the seal member 216.
- the inner diameter of the seal member 216 is made larger than that of the sleeve 212 due to the mounting direction of the input shaft 203 described later.
- the outer diameter of the shaft of the input shaft 203 that slides on the seal member 216 is larger than the diameter of the sleeve 212.
- the outer diameter of the shaft of the mounting portion of the seal member 216 may be smaller than the diameter of the sleeve 212.
- Reference numeral 217 denotes a bolt for fixing the steering column 201
- reference numeral 218 denotes a bolt for fixing the cover 209.
- FIG. 16 is an assembly view of the electric power steering device shown in FIG. 15, and is a longitudinal sectional view on the input shaft side.
- FIG. 17 is an assembly view of the electric power steering device shown in FIG. 15, and is a longitudinal sectional view on the output shaft side.
- the outer diameter of the key lock collar 204 is larger than the inner diameter of the coil 213 of the torque sensor mechanism.
- the key lock collar 204 of the anti-theft device is press-fitted into the input shaft 203 via the slip ring 205 in advance.
- a base end of the torsion bar 207 is press-fitted and fixed to the input shaft 203 in front of the vehicle. Note that the base end of the torsion bar 207 may be pinned in advance. Further, the end of the sleeve 212 on the vehicle rear side is fixed in advance to the end of the input shaft 203 on the vehicle front side by caulking or the like.
- the torsion bar 207 may be press-fitted and fixed to the output shaft 206 in advance.
- the gear housing 208 is provided with an anti-theft device (not shown).
- the attachment part is united.
- a worm wheel 215 is fitted and mounted on the output shaft 206 in advance.
- the vehicle front end of the input shaft 203 and the vehicle rear end of the output shaft 206 are united and assembled on the inner diameter side of the coil 213 of the sensor mechanism located in the middle.
- the torsion bar 207 passes through the axial hole of the output shaft 206.
- the output shaft 206 and the torsion bar 207 are press-fitted into the co-hole of the output shaft 206 and the torsion bar 207 through the fixing pin 210, and the output shaft 206 and the torsion bar 207 are fixed.
- the holes should be opened in advance! It is easier to assemble! However, they can be opened just before press fitting.
- the steering column 201 and the cover 209 are assembled with the bolts 217 and 18, and the EPS around the steering shaft is completed.
- the inner ring force of the bearings 209a and 209b attached to the canopy 209 is set so as to cover the fixing pin 210, so that the fixing pin 210 is also prevented from coming off.
- each of input shaft 203 and output shaft 206 has a key opening on the vehicle rear side that is larger than the inner diameter of coil 213 of the intermediate sensor. Even if it has a lock collar 204 and a worm wheel 215 on the front side of the vehicle, it is possible to easily assemble the key lock collar 204 which is larger than the inner diameter of the sensor coil 213 without increasing the number of parts. it can.
- key lock collar 204 can be set in gear housing 208 made of aluminum integrated with the sensor housing.
- the press-fit receiving portion does not need to be provided, as compared with an assembling method in which both shafts are assembled to the sensor portion and then a worm wheel is attached.
- the structure becomes simple and compacting becomes possible.
- the sensor part and the key lock color can be brought closer.
- FIG. 18 is a longitudinal sectional view of an input shaft according to a first modification of the thirteenth embodiment.
- This modified example has the same basic structure as that of the above-described thirteenth embodiment, and only different points will be described.
- the input shaft 203 is divided into a front shaft 203a and a rear shaft 203b, and a collapse structure by injection is formed at a location indicated by reference numeral 219.
- a key lock collar 204 having a diameter larger than the inner diameter of the coil 213 can be installed on the front shaft 3a to which the torsion bar 207 is connected.
- the color 204 can be installed close to it. Note that it is naturally possible to provide the key lock collar 204 and the lock groove on the rear shaft 203b.
- FIG. 19 is a longitudinal sectional view of an input shaft according to a second modification of the thirteenth embodiment.
- This modified example has the same basic structure as that of the above-described thirteenth embodiment, and only different points will be described.
- the input shaft 203 is divided into a front shaft 203a and a rear shaft 203b, and has a collapsed structure by elliptical fitting at a joint 220 between the shafts 203a and 203b.
- a key lock collar 204 having a diameter larger than the inner diameter of the coil 213 can be installed on the front shaft 203a to which the torsion bar 207 is connected.
- the lock collar 204 can be installed close to it.
- the rear shaft Of course, it is also possible to install a key lock collar 204 and a lock groove on 203b.
- FIG. 20 is a longitudinal sectional view of an input shaft according to a third modification of the thirteenth embodiment.
- This modified example has the same basic structure as that of the above-described thirteenth embodiment, and only different points will be described.
- the input shaft 203 is divided into a front shaft 203a and a rear shaft 203b, and is spline-fitted by a male spline portion 221 and a female spline portion 222. Both shafts 203a and 203b are It has an elastic structure.
- a key lock collar 204 having a diameter larger than the inner diameter of the coil 213 can be installed on the front shaft 203a to which the torsion bar 207 is connected.
- the lock collar 204 can be installed close to it. It should be noted that a key lock collar 204 and a lock groove can be provided on the rear shaft 203b.
- FIG. 21 is a longitudinal sectional view of the electric power steering device according to the fourteenth embodiment of the present invention.
- the present embodiment has the same basic structure as the thirteenth embodiment described above, and only different points will be described.
- the key lock collar 204 of the anti-theft device is attached to the input shaft 203.
- a key bolt (not shown) that moves radially out of the hole 201a of the steering column 201 enters and engages with the hole 204a of the key lock collar 204.
- the input shaft 203 and the steering wheel (not shown) can be kept non-rotating
- the base end of the torsion bar 207 is press-fitted in front of the input shaft 203 in the vehicle. Fixed. Note that the base end of the torsion bar 207 may be pinned in advance. Furthermore, the end of the sleeve 212 on the vehicle rear side is fixed in advance to the end of the input shaft 203 on the vehicle front side by caulking or the like. The torsion bar 20 7 may be press-fitted and fixed to the output shaft 206 in advance! ,.
- an assembly nut is fastened to the output shaft 206 into which the worm wheel 215 is press-fitted, and an assembly is made in advance.
- a worm 214 driven by an electric motor (not shown) is assembled with the worm wheel 215.
- the assembly including the worm wheel 215 and the worm 214 passes through the coil 213 of the gear housing 208 from the vehicle front side to the rear side (in the direction of the arrow B), and is attached to the gear housing 208. .
- the input shaft 203 to which the key lock collar 204 or the like is attached passes through the coil 213 of the gear housing 208 from the vehicle rear side to the front side (in the direction of arrow A).
- the output shaft 206 and the torsion bar 207 are press-fitted into the co-hole of the output shaft 206 and the torsion bar 207 through the fixing pin 210, thereby fixing the output shaft 206 and the torsion bar 207.
- the holes should be opened in advance! It is easier to assemble! However, they can be opened just before press fitting.
- the steering column 201 is fastened with the Bonoreto 217 to complete the EPS around the steering shaft.
- the input shaft 203 and the output shaft 206 each have a key lock collar 204 on the vehicle rear side that is larger than the inner diameter of the coil 213 of the middle sensor.
- the worm wheel 215 on the front side of the vehicle the key lock collar 204 larger than the inner diameter of the sensor coil 213 can be easily assembled without increasing the number of parts. .
- the assembly on the cover 209 side including the worm wheel 215 and the worm 214 is assembled separately from the total assembly.
- the combination of the worm wheel 215 and the worm 214 requires precision. If the gear knocking is too large, it may be a source of noise when the vehicle vibrates, etc. If the knocklash is too tight, the gear operation may deteriorate. Therefore, Warm Hoichi
- the combination of LE 215 and worm 214 is also selected and combined with the medium power of the completed gear.
- the cover 209 provided with the worm wheel 215 and the worm 214 The operating torque can be checked with the assembly, and the engagement of the gear with less friction can be checked more clearly than with the entire assembly.
- FIG. 22A is a longitudinal sectional view of a steering device according to a fifteenth embodiment of the present invention
- FIG. 22B is a sectional view taken along line bb of A.
- the present embodiment has the same basic structure as the above-described thirteenth embodiment, and only different points will be described.
- the present embodiment relates to a steering device with a sensor mechanism for a steering torque that is not compatible with an electric power steering device.
- input shaft 203 is rotatably supported in housing 230 via bearings 232a and 232b, and output shaft 206 is rotatably supported via bearing 233. is there.
- the proximal end of the torsion bar 207 is press-fitted on the output shaft 206 side, and is fixed to the input shaft 203 by a fixing pin 210.
- a yoke 231a of the universal joint 231 is physically connected to the front side of the output shaft 206 in the vehicle.
- a key lock collar 204 of an anti-theft device is press-fitted into a middle portion of the input shaft 203 via a slip ring 205.
- a key bolt (not shown) that moves in and out of the hole 230a of the housing 230 in the radial direction enters and engages with the groove 204b of the key lock collar 204, whereby the input shaft 203 and the The steering wheel (not shown) can be kept non-rotating.
- Eight grooves 204b with which the key bolts are engaged are provided.
- the outer diameter of the key lock force roller 204 is larger than the inner diameter of the coil 213 of the torque sensor mechanism, and the yoke 231a of the universal joint 231 is also larger than the inner diameter of the coil 213.
- the key lock collar 204 of the anti-theft device is press-fitted into the input shaft 203 via the slip ring 205 in advance.
- the housing 230 is integrally provided with a mounting portion for an anti-theft device (not shown).
- a torsion bar 207 is press-fitted into the output shaft 206.
- the torsion bar 207 may be fixed to the output shaft 206 with a pin in advance.
- a sleeve 212 is fixed to an end portion of the output shaft 206 on the vehicle rear side in advance by caulking or the like.
- the torsion bar 207 may be press-fitted and fixed to the input shaft 203 in advance.
- the input shaft 203 to which the above-described key lock collar 204 and the like are attached passes through the coil 213 of the housing 230 from the rear side of the vehicle toward the front side (in the direction of arrow A).
- the output shaft 206 to which the above-mentioned universal joint 231 and the like are attached passes through the inside of the coil 213 of the housing 230 from the vehicle front side to the rear side (in the direction of arrow B).
- the vehicle front end of the input shaft 203 and the vehicle rear end of the output shaft 206 are united and assembled on the inner diameter side of the coil 213 of the sensor mechanism located in the middle.
- the torsion bar 207 passes through the axial hole of the input shaft 203.
- the input shaft 203 and the torsion bar 207 are press-fitted into the co-hole of the input shaft 203 and the torsion bar 207 through the fixing pin 210 to fix the input shaft 203 and the torsion bar 207.
- the holes should be opened in advance! It is easier to assemble! However, they can be opened just before press fitting.
- the bearing 232b is assembled to the housing 230, and the input shaft 203 is fixed with the assembling nut 223 to complete the periphery of the steering shaft.
- each of input shaft 203 and output shaft 206 has a key port on the vehicle rear side larger than the inner diameter of coil 213 of the sensor in the middle. Even if it has a lock collar 204 and a universal joint 231 on the front side of the vehicle, it is easy to assemble the key lock force 204 larger than the inner diameter of the sensor coil 213 without increasing the number of parts. Can be.
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- Transportation (AREA)
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Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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EP05751427A EP1772347A4 (en) | 2004-06-17 | 2005-06-17 | VEHICLE CONTROL DEVICE AND ASSEMBLY METHOD |
US11/629,860 US20070235246A1 (en) | 2004-06-17 | 2005-06-17 | Vehicle Steering System And Assembling Method Thereof |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
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JP2004180208A JP2006001424A (ja) | 2004-06-17 | 2004-06-17 | 電動パワーステアリング装置及びその組立方法 |
JP2004-180208 | 2004-06-17 | ||
JP2004180202A JP2006001423A (ja) | 2004-06-17 | 2004-06-17 | 車両用ステアリング装置及びその組立方法 |
JP2004-180202 | 2004-06-17 | ||
JP2004-181755 | 2004-06-18 | ||
JP2004181755A JP2006001475A (ja) | 2004-06-18 | 2004-06-18 | 車両用ステアリング装置及びその組立方法 |
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WO2005123485A1 true WO2005123485A1 (ja) | 2005-12-29 |
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PCT/JP2005/011155 WO2005123485A1 (ja) | 2004-06-17 | 2005-06-17 | 車両用ステアリング装置及びその組立方法 |
Country Status (3)
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US (1) | US20070235246A1 (ja) |
EP (1) | EP1772347A4 (ja) |
WO (1) | WO2005123485A1 (ja) |
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DE112008003076B4 (de) | 2007-11-13 | 2019-06-19 | Nsk Ltd. | Lenkvorrichtung |
US9266502B2 (en) * | 2012-11-26 | 2016-02-23 | Nsk Ltd. | Steering apparatus |
WO2015133168A1 (ja) * | 2014-03-05 | 2015-09-11 | 日本精工株式会社 | 電動式パワーステアリング装置及びその組立方法 |
US9616848B2 (en) * | 2015-08-14 | 2017-04-11 | Steering Solutions Ip Holding Corporation | Locking assembly for vehicle steering column and method of manufacturing |
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- 2005-06-17 EP EP05751427A patent/EP1772347A4/en not_active Withdrawn
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Also Published As
Publication number | Publication date |
---|---|
EP1772347A4 (en) | 2007-12-19 |
EP1772347A1 (en) | 2007-04-11 |
US20070235246A1 (en) | 2007-10-11 |
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