WO2018167992A1 - Corps d'assemblage par cannelures et procédé permettant de fabriquer un corps d'assemblage par cannelures - Google Patents

Corps d'assemblage par cannelures et procédé permettant de fabriquer un corps d'assemblage par cannelures Download PDF

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Publication number
WO2018167992A1
WO2018167992A1 PCT/JP2017/020714 JP2017020714W WO2018167992A1 WO 2018167992 A1 WO2018167992 A1 WO 2018167992A1 JP 2017020714 W JP2017020714 W JP 2017020714W WO 2018167992 A1 WO2018167992 A1 WO 2018167992A1
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WIPO (PCT)
Prior art keywords
shaft
spline
tooth
teeth
hole
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Application number
PCT/JP2017/020714
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English (en)
Japanese (ja)
Inventor
集一郎 北島
Original Assignee
株式会社ショーワ
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Filing date
Publication date
Application filed by 株式会社ショーワ filed Critical 株式会社ショーワ
Publication of WO2018167992A1 publication Critical patent/WO2018167992A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/22—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or type of main drive shafting, e.g. cardan shaft
    • 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
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/02—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for connecting two abutting shafts or the like
    • 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
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end

Definitions

  • the present invention relates to a spline fitting body and a method for manufacturing the spline fitting body.
  • a rear-wheel drive vehicle or a four-wheel drive vehicle in which a prime mover is mounted on the front side of the vehicle body is provided with a propulsion shaft for transmitting power from a transmission device mounted on the front side of the vehicle body to a reduction gear mounted on the rear side of the vehicle body.
  • the distance between the transmission and the final reduction gear is not constant, and the rotation center between the output shaft of the transmission and the input shaft of the final reduction gear is not coaxial.
  • the propulsion shaft is connected to the transmission and the final reduction gear through a universal joint such as a cross joint.
  • the steel pipe which comprises a propulsion shaft exceeds fixed length, a resonance point will become low. Therefore, in order to prevent this, the steel pipe is divided into two and the two steel pipes are connected by a universal joint.
  • the propulsion shaft or the like is shortened by receiving a collision load from the front-rear direction so as not to be a “stick rod” that prevents the engine or the like from moving backward.
  • a sleeve (shaft cylinder member) provided at the front end of the propulsion shaft and a yoke (shaft member) fitted in the sleeve constitute a spline fitting body and are shortened.
  • a hole spline is formed in the sleeve
  • a shaft spline is formed in the yoke.
  • the hole spline and the shaft spline are spline-fitted, and the sleeve and the yoke are connected so as to be slidable (can be shortened) in the axial direction.
  • Patent Document 1 in order to set the collision load when the spline fitting body is shortened to a predetermined value or more, the rear end portion of the sleeve is swaged to form a swaged portion that regulates the retreat of the yoke. Yes.
  • the circumferential clearance between the shaft spline and the hole spline that can be reduced by applying the twist angle becomes a negative clearance due to the above-mentioned factors (processing error, deformation due to heat treatment, etc.) and causes a margin in the circumferential direction. There is. For this reason, the press-fit load at the time of assembling increased, and the assembling work became difficult.
  • An object of the present invention is to provide a method for manufacturing a united body and a spline fitting body.
  • a spline fitting body includes a shaft member in which a shaft spline is formed on an outer peripheral surface, and a shaft cylinder member in which a hole spline to be splined with the shaft spline is formed on an inner peripheral surface.
  • Each of the shaft spline teeth constituting the shaft spline includes a first tooth extending in the axial direction and the first tooth extending in the axial direction while being spaced apart from the first tooth in the axial direction.
  • a second tooth having a shorter axial length than one tooth, the first tooth and the second tooth have different phases, and the first tooth is located in one circumferential direction.
  • the shaft member includes a first shaft portion formed with a plurality of the first teeth; A second shaft portion formed with a plurality of the second teeth, and the first shaft; Interposed between said second shaft portion, characterized in that it comprises a deformable twisted portion twisted around the axis, a.
  • the torsion portion is twisted so that the phase difference between the first teeth and the second teeth is reduced.
  • the second tooth is inserted between the hole spline teeth.
  • the second tooth moves to the other side in the circumferential direction by the elastic restoring force of the torsion part and comes into contact with the hole spline teeth on the other side in the circumferential direction.
  • a twist angle is given to the first tooth.
  • the first tooth and the hole spline tooth are more strongly pressed, and a gap is hardly generated between the first tooth and the hole spline tooth. Therefore, vibration and noise during high-speed rotation are further less likely to occur. .
  • the outer diameter of the twisted portion may be formed smaller than the outer diameter of the first shaft portion and the outer diameter of the second shaft portion, or the inside of the twisted portion may be It may be meatless.
  • the rigidity of the twisted portion around the axis is low, and the twisted portion is easily deformed (twisted). Therefore, the assembly work can be further facilitated.
  • a jig mounting hole formed of at least a pair of opposing surfaces may be formed on the end surface of the shaft member.
  • wearing which consists of at least a pair of opposing surface may be formed in the outer peripheral surface of the said shaft cylinder member.
  • a jig mounting locking surface including at least a pair of opposing surfaces may be formed on the outer peripheral surface of the shaft member.
  • the work of twisting the twisted portion can be facilitated.
  • a method of manufacturing a spline fitting body includes a shaft member having a shaft spline formed on an outer peripheral surface, and a hole spline for spline fitting with the shaft spline formed on an inner peripheral surface.
  • Each of the shaft spline teeth constituting the shaft spline includes a first tooth and a second tooth spaced axially from the first tooth, and the first tooth.
  • the second teeth have different phases, a first shaft portion formed with a plurality of the first teeth, a second shaft portion formed with a plurality of the second teeth, and the first shaft portion And the second shaft portion, and a twisted portion that can be twisted and deformed around the shaft, and the first shaft portion is inserted into the shaft tube member. And twisting the twisted portion in one circumferential direction, and positioning the first tooth in one circumferential direction. And a step of abutting the hole spline teeth of the hole spline and displacing the second teeth in one circumferential direction, and a step of inserting the second shaft portion into the shaft tube member. It is characterized by that.
  • the torsion portion is twisted so that the phase difference between the first teeth and the second teeth is reduced.
  • the second tooth is inserted between the hole spline teeth.
  • the second tooth moves to the other side in the circumferential direction by the elastic restoring force of the torsion part and comes into contact with the hole spline teeth on the other side in the circumferential direction.
  • the manufacturing method of the spline fitting body which can prevent generation
  • FIG. 1 is a cross-sectional view taken along the line IIA-IIA in FIG. 1
  • FIG. 2 is a cross-sectional view taken along the line IIIB-IIIB in FIG.
  • A) is sectional drawing which cut
  • (b) is the rear view which looked at the shaft member before assembly
  • FIG. 1 is a figure which shows the process in which a shaft member is inserted in a sleeve
  • (b) is a figure which shows the state which inserted only the 1st tooth
  • (c) is a figure. It is a figure which shows the state which inserted the 1st tooth
  • (A) is a sectional view taken along the line VIA-VIA in FIG. 5 (b), and (b) is a sectional view showing a state in which a rotational load is applied to the rear part of the shaft member from the state of FIG. 6 (a).
  • FIG. 1 is a figure which shows the process in which a shaft member is inserted in a sleeve
  • (b) is a figure which shows the state which inserted only the 1st tooth
  • FIG. 5C is a cross-sectional view taken along the line VIC-VIC in FIG.
  • FIG. (A) is sectional drawing which shows the engagement state of the shaft spline and hole spline when a shaft member rotates forward, (b) is the engagement of the shaft spline and hole spline when a shaft member reversely rotates. It is sectional drawing which shows a state. It is sectional drawing which shows the cross shaft joint and propulsion shaft to which the spline fitting body of 2nd Embodiment was applied.
  • (A) is a cross-sectional view of the shaft member before assembly taken along the rotation axis O
  • (b) is a cross-sectional view taken along line IXB-IXB in FIG.
  • FIG. 8 is a cross-sectional view taken along line XA-XA in FIG. 8
  • (b) is a cross-sectional view taken along line XB-XB in FIG.
  • (A) is sectional drawing which shows the engagement state of the shaft spline and hole spline when a shaft member rotates forward
  • (b) is the engagement of the shaft spline and hole spline when a shaft member reversely rotates. It is sectional drawing which shows a state. It is the figure which expanded a part of shaft spline formed in the shaft member.
  • the vehicle includes a propulsion shaft 1 extending in the propulsion direction (front-rear direction) and a cross shaft joint 2 connected to the front end of the propulsion shaft 1.
  • the propulsion shaft 1 is a shaft that transmits power output from an engine (not shown) mounted on the front side of the vehicle body to a final reduction gear (not shown) mounted on the rear side of the vehicle body, and extends in the front-rear direction. ing.
  • the propulsion shaft 1 is constituted by two cylindrical steel pipes (only the front steel pipe 3 is shown in FIG. 1) divided at an intermediate portion, and has a two-piece structure.
  • the front steel pipe 3 and the rear steel pipe are connected by a constant velocity joint (not shown).
  • a sleeve 10 for connecting the cross joint 2 and the steel pipe 3 is provided at the front end of the front steel pipe 3.
  • the front steel pipe 3 is simply referred to as “steel pipe 3”.
  • the sleeve 10 is a substantially cylindrical member, and the rear end portion 10a is joined to the front end of the steel pipe 3 by friction welding.
  • a hole spline 11 and a circumferential groove 16 extending in the circumferential direction are formed inside the sleeve 10.
  • a substantially C-shaped snap ring 17 is fitted in the circumferential groove 16 when viewed from the axial direction.
  • the cross shaft joint 2 includes a flange yoke 4 connected to an output shaft (not shown) of the transmission, a stub yoke 5 connected to the sleeve 10, and a cross shaft 6 connecting the flange yoke 4 and the stub yoke 5. .
  • the stub yoke 5 includes a yoke portion 7 that is bifurcated and rotatably supports the cross shaft 6, and a cylindrical portion 7 a that extends in the front-rear direction.
  • the cylindrical portion 7a of the yoke portion 7 is formed with an assembly hole 7b penetrating in the front-rear direction.
  • a hole spline 7c is formed in the assembly hole 7b, and the shaft member 8 is fitted in the spline.
  • a shaft spline 8a that is spline-fitted with the hole spline 7c is formed at the front portion of the shaft member 8. For this reason, the yoke part 7 and the shaft member 8 are connected so that relative rotation is impossible.
  • the shaft member 8 is formed with a flange 8 b that abuts against the rear surface of the yoke portion 7.
  • a male screw portion 8c protruding forward from the assembly hole 7b is formed.
  • a nut N that tightens the base portion 7a of the yoke portion 7 toward the rear flange 8b is screwed into the male screw portion 8c. For this reason, the stub yoke 5 is fixed to the shaft member 8 so as not to move back and forth.
  • a rear portion of the shaft member 8 (hereinafter referred to as a rear shaft portion 9) is fitted in the sleeve 10.
  • the rear shaft portion 9 is formed with a shaft spline 9 a that is spline-fitted with the hole spline 11 of the sleeve 10. For this reason, the sleeve 10 and the shaft member 8 are connected so as not to be relatively rotatable.
  • a flange 9 b that abuts on the step surface 18 in the sleeve 10 is formed. Therefore, the shaft member 8 is prevented from moving forward with respect to the sleeve 10.
  • the rear end surface of the rear shaft portion 9 is in contact with the snap ring 17 in the sleeve 10. For this reason, when the collision load acting on the shaft member 8 is equal to or greater than the load capable of breaking the snap ring 17, the shaft member 8 breaks the snap ring 17 and moves backward.
  • An O-ring 9 c is provided in the front opening of the sleeve 10. Therefore, muddy water or the like does not enter the gap between the shaft spline 9a and the hole spline 11.
  • the hole spline 11 is composed of a plurality of hole spline teeth 12 spaced apart in the circumferential direction.
  • the hole spline teeth 12 have a left tooth surface 13 facing in the counterclockwise direction around the rotation axis O as viewed from the rear, and a right tooth surface 14 facing in the clockwise direction.
  • the right tooth surface 14 of the hole spline tooth 12 is pressed against the tooth surface 21a of the first tooth 21 of the shaft spline tooth 20 described later. Therefore, as shown by the arrow A in FIG. 2A, the sleeve 10 rotates counterclockwise.
  • the left tooth surface 13 of the hole spline tooth 12 is pressed against the tooth surface 21b of the first tooth 21 of the shaft spline tooth 20, as indicated by an arrow B in FIG.
  • the sleeve 10 rotates clockwise.
  • the direction indicated by the arrow A is referred to as a forward rotation direction
  • the direction indicated by the arrow B is referred to as a reverse rotation direction.
  • the shaft spline 9a is composed of a plurality of shaft spline teeth 20 that are spaced apart from each other in the circumferential direction. As shown in FIG. 3A, each of the shaft spline teeth 20 is divided into a front side and a rear side, and a first tooth 21 located on the front side and a second tooth 22 located on the rear side are provided. I have.
  • the first tooth 21 extends in the axial direction and is a tooth for transmitting a driving force to the hole spline 11. Therefore, the length of the first tooth 21 in the axial direction is substantially the same as that of the conventional shaft spline tooth and is long in the axial direction.
  • the second teeth 22 extend in the axial direction, the length in the axial direction is shorter than that of the first teeth 21 and the rigidity is low.
  • the first teeth 21 and the second teeth 22 have the same tooth profile as viewed from the axial direction. Further, the first tooth 21 is positioned in the forward rotation direction with respect to the second tooth 22, and the phase difference between the first tooth 21 and the second tooth 22 is ⁇ ⁇ b> 1. That is, the first tooth 21 and the second tooth 22 are spline-fitted with the phases being different.
  • the left tooth surface 21a of the first tooth 21 is in contact with the right tooth surface 14 of the hole spline tooth 12 located in the positive rotation direction among the two hole spline teeth 12, 12 adjacent in the circumferential direction.
  • the right tooth surface 21 b of the first tooth 21 is not in contact with the hole spline teeth 12.
  • the right tooth surface 22b of the second tooth 22 is in contact with the left tooth surface 13 of the hole spline tooth 12 positioned in the reverse rotation direction among the two hole spline teeth 12 and 12 adjacent in the circumferential direction.
  • the left tooth surface 22 a of the second tooth 22 is not in contact with the hole spline tooth 12.
  • the rear shaft portion 9 has a portion where the shaft spline teeth 20 are not formed.
  • the portion where the first teeth 21 are formed is referred to as a first shaft portion 31
  • the portion where the second teeth 22 are formed is referred to as a second shaft portion 32
  • the shaft spline teeth 20 are formed.
  • the part that is not formed is referred to as a twisted portion 33.
  • the shaft spline teeth 20 are not formed in the twisted portion 33, the strength against the twisted load is smaller than that of the first shaft portion 31 and the second shaft portion 32. For this reason, for example, when a load that rotates the first shaft portion 31 in the forward rotation direction and rotates the second shaft portion 32 in the reverse rotation direction is applied, the torsion portion 33 is twisted. .
  • the shaft member 8 of the present embodiment is made of carbon steel for machine structure and has an elastic restoring force. For this reason, the twisted part 33 also has an elastic restoring force.
  • the rear end surface of the rear shaft portion 9 is formed with a thinning hole 9d toward the front, and the inside of the twisted portion 33 is thinned. Further, a notch 9 e is provided on the outer peripheral surface of the twisted portion 33, and the outer diameter of the twisted portion 33 is smaller than that of the first shaft portion 31 and the second shaft portion 32. For this reason, the torsion 33 part has a further reduced strength against a torsional load and is easily twisted.
  • a jig hole 9f (see FIG. 3) and a pair of locking surfaces 19 and 19 (see FIG. 4) are formed.
  • the jig hole 9f is a hole formed in the rear end surface of the shaft member 8, has a diameter larger than that of the lightening hole 9d, and has a regular hexagonal shape (see FIG. 3). (See (b)).
  • a jig such as a rod-shaped member having an outer diameter of a regular hexagon is inserted into the jig hole 9f, and the load around the rotation axis O is placed on the rear part (second shaft part 32) side of the rear shaft part 9. It becomes easy to apply.
  • the pair of locking surfaces 19, 19 are the outer peripheral surfaces of the sleeve 10 that are opposed to each other. According to this, it becomes easy to mount the fixing jig such as a wrench capable of sandwiching the pair of locking surfaces 19 and 19 and fix the sleeve 10.
  • the phase difference between the first tooth 21 and the second tooth 22 is ⁇ 2, and the phase difference ⁇ 1 after the assembly. Bigger than. That is, the circumferential length S occupied by the first teeth 21 and the second teeth 22 before assembly is larger than that after assembly, and the shaft spline 9a cannot be press-fitted into the hole spline 11 as it is.
  • the assembly process of the stub yoke 5, the sleeve 10, and the steel pipe 3 including the process of carrying out the spline fitting of the shaft spline 9a to the hole spline 11 is demonstrated.
  • a jig is attached to the pair of locking surfaces 19 and 19 (see FIG. 4) of the sleeve 10 to fix the sleeve 10. Further, a jig is attached to the jig hole 9f of the shaft member 8, and the second shaft portion 32 is rotated in the forward rotation direction. As a result, the first shaft portion 31 of the rear shaft portion 9 does not rotate because the first teeth 21 engage (contact) the hole spline teeth 12 (see FIG. 6B). Also. A twisted portion 33 interposed between the first shaft portion 31 that does not rotate and the second shaft portion 32 on which a rotational load acts is twisted, and the second shaft portion 32 rotates in the forward rotation direction. As a result, as shown in FIG. 6B, the phase difference between the first tooth 21 and the second 22 is reduced. The twisting amount of the twisted portion 33 needs to be set so that the phase difference between the first tooth 21 and the second tooth 22 is less than ⁇ 1.
  • the shaft member 8 is further inserted while the twisted portion 33 is kept twisted.
  • the phase difference between the first tooth 21 and the second tooth 22 is less than ⁇ 1
  • the right tooth surface 22b of the second tooth 22 does not contact the left tooth surface 13 of the hole spline tooth 12. Therefore, the second teeth 22 can be easily inserted between the hole spline teeth 12 without being press-fitted.
  • the shaft member 8 is inserted until the flange 9b of the shaft member 8 contacts the stepped surface 18 in the sleeve 10, as shown in FIG. Thereby, the insertion of the second tooth 22 is completed.
  • the phase difference between the first teeth 21 and the second teeth 22 is ⁇ 1, and the twisted portion 33 is equivalent to ( ⁇ 2 ⁇ 1).
  • the twist remains.
  • the torsion part 33 after the assembly exhibits an elastic restoring force such that the first teeth 21 and the second teeth 22 are separated in the circumferential direction.
  • the first teeth 21 are pressed against the hole spline teeth 12 positioned in the forward rotation direction (see arrow A1 in FIG. 6C), and the second teeth 22 are the hole spline teeth 12 positioned in the reverse rotation direction. (See arrow B1 in FIG. 6C).
  • the O-ring 9c is inserted from the front end of the shaft member 8, and the O-ring 9c is assembled between the sleeve 10 and the shaft member 8 (see FIG. 1). Further, the snap ring 17 is inserted from the rear opening of the sleeve 10, and the snap ring 17 is assembled into the sleeve 10 (see FIG. 1).
  • the front portion of the shaft member 8 is inserted into the assembly hole 7 b of the yoke portion 7, and is fastened with a nut N to the male screw portion 8 c of the shaft member 8 to connect the shaft member 8 and the yoke portion 7.
  • the above is the assembly process of the stub yoke 5, the sleeve 10, and the steel pipe 3.
  • the shaft member 8 rotates in the reverse rotation direction when the vehicle moves backward, the first teeth 21 and the second teeth 22 of the shaft spline teeth 20 move in the reverse rotation direction. Further, when the shaft member 8 rotates, the twisted portion 33 is twisted, and as shown in FIG. 7B, the right tooth surface 21b of the first tooth 21 is the left tooth surface of the hole spline tooth 12 positioned in the reverse rotation direction. 13 abuts. When the shaft member 8 further rotates, the first teeth 21 press the hole spline teeth 12 in the reverse rotation direction, and the sleeve 10 rotates in the reverse rotation direction.
  • the shaft member 8 and the sleeve 10 can be combined by twisting the shaft member 8 (twisted portion 33). Therefore, the press-fitting work that has been conventionally performed can be avoided, and the assembly work can be facilitated.
  • the present invention is not limited to the example described in the embodiment.
  • the O-ring 9c is used to prevent muddy water or the like from entering the gap between the shaft spline 9a and the hole spline 11, but a sealing agent may be filled instead.
  • the front opening of the sleeve 10 may be covered with a boot-like member or a heat shrinkable sheet.
  • the yoke portion 7 and the shaft member 8 are separable, and an example in which the shaft member 8 is assembled from the rear of the sleeve 10 has been described.
  • a stub yoke 105 in which the portion 7 and the shaft member 8 are integrated may be used.
  • a second embodiment using the stub yoke 105 will be described. In the description of the second embodiment, only differences from the first embodiment will be described. Moreover, the same code
  • the stub yoke 105 of the second embodiment includes a yoke portion 107 that rotatably supports the cross shaft 6, and a shaft portion 108 that extends rearward from the yoke portion 107.
  • a rear shaft portion 109 that is a rear portion of the shaft portion 108 is formed with a shaft spline 109a that is spline-fitted with the hole spline 11 of the sleeve 10.
  • the shaft spline 109a has a plurality of shaft spline teeth 120 spaced apart in the circumferential direction.
  • Each of the shaft spline teeth 120 includes a second tooth 122 located on the front side, and a first tooth 121 that is disposed rearwardly with respect to the second tooth 122.
  • a portion where the first teeth 121 are formed is referred to as a first shaft portion 131
  • a portion where the second teeth 22 are formed is referred to as a second shaft portion 132
  • a shaft spline tooth 120 is formed.
  • the part that is not formed is referred to as a twisted portion 133.
  • the twisted portion 133 Since the twisted portion 133 is not formed with the shaft spline teeth 120, the twisted portion 133 has a lower strength against the twisted load than the first shaft portion 131 and the second shaft portion 132. Further, the twisted portion 133 is formed with a lightening hole 109d and a notch 109e provided on the outer peripheral surface, and the strength against the twist load is further reduced.
  • the first tooth 121 is positioned in the forward rotation direction with respect to the second tooth 122, and the phase difference between the first tooth 121 and the second tooth 122 is ⁇ 3.
  • the first tooth 121 is in contact with the right tooth surface 14 of the hole spline tooth 12 located in the forward rotation direction among the two hole spline teeth 12, 12 adjacent in the circumferential direction.
  • the second tooth 122 is in contact with the left tooth surface 13 of the hole spline tooth 12 located in the reverse rotation direction among the two hole spline teeth 12, 12 adjacent in the circumferential direction.
  • the phase difference between the first tooth 121 and the second tooth 122 is ⁇ 4, which is larger than the phase difference ⁇ 3 after the assembly. Is formed. That is, also in the second embodiment, the twisted portion 133 is assembled in a twisted state and has an elastic restoring force. Therefore, the first teeth 121 are pressed against the hole spline teeth 12 positioned in the forward rotation direction (see arrow A3 in FIG. 10A), and the second teeth 122 are the hole spline teeth 12 positioned in the reverse rotation direction. (See arrow B3 in FIG. 10A).
  • a jig hole 9f is formed in the shaft member 8 of the first embodiment (see FIG. 3B).
  • a jig is attached to the base 107a of the yoke portion 107. It can be installed. More specifically, as shown in FIG. 9B, the base portion 107a of the yoke portion 107 has a regular hexagonal cross section, and the yoke portion 107 and the shaft portion 108 are rotated by a jig such as a wrench. It can be done.
  • the shaft portion 108 of the stub yoke 105 is inserted into the sleeve 10 from the front opening portion of the sleeve 10. Further, only the first teeth 121 of the shaft spline 109 a are inserted between the hole spline teeth 12 of the sleeve 10.
  • a jig is attached to the pair of locking surfaces 19 and 19 (see FIG. 4) of the sleeve 10 to fix the sleeve 10 so as not to rotate.
  • the first teeth 121 engage with the hole spline teeth 12, and the first shaft portion 131 of the rear shaft portion 109 does not rotate.
  • a jig is mounted on the outer peripheral surface 107b of the base portion 107a, the stub yoke 105 is rotated in the forward rotation direction, and the second shaft portion 132 of the rear shaft portion 109 is rotated.
  • the twisted portion 133 is twisted to reduce the phase difference between the first tooth 121 and the second tooth 122, and the second tooth 122 can be inserted between the hole spline teeth 12.
  • the stub yoke 105 is further inserted, and the rear end surface of the rear shaft portion 109 is brought into contact with the snap ring 17.
  • the load acting on the shaft portion 108 is released by removing the jig.
  • the twisted portion 133 exhibits an elastic restoring force, and the second shaft portion 132 rotates in the reverse rotation direction.
  • the second tooth 122 moves in the reverse rotation direction, and the hole spline teeth located in the reverse rotation direction among the two hole spline teeth 12, 12 adjacent in the circumferential direction. 12 abuts.
  • a sealant is filled between the front opening portion of the sleeve 10 and the rear shaft portion 109 of the stub yoke 105 so that muddy water or the like does not enter between the shaft spline 109 a and the hole spline 11.
  • the above is the assembly process of the stub yoke 5, the sleeve 10, and the steel pipe 3.
  • the twisted portion 133 is set so as to have an elastic restoring force that can counter a reaction force when the first tooth 121 presses against the right tooth surface 14 of the hole spline tooth 12.
  • the first teeth 121 of the shaft spline 120 move in the reverse rotation direction.
  • the first teeth 121 are pressed in the A4 direction by the elastic restoring force of the twisted portion 133, but when the vehicle moves backward, the first teeth 121 move in the B4 direction by further twisting the twisted portion 133. It becomes possible.
  • the second embodiment it is possible to avoid the press-fitting work that has been conventionally performed and to facilitate the assembling work. Further, since the shaft portion 108 moves backward even with a small collision load, the spline fitting body can be reliably shortened when the vehicle collides.
  • the first tooth 121 is disposed on the front side and the second tooth 122 is disposed on the rear side with respect to the shaft spline 109a formed on the rear shaft portion 109 of the stub yoke 105. You may arrange.
  • the first teeth 21 and 121 are linearly formed in the axial direction.
  • a helical spline with a twist angle (lead angle) ⁇ 5 may be used.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Motor Power Transmission Devices (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

Le problème décrit par la présente invention est d'obtenir un corps d'assemblage par cannelures et un procédé permettant de fabriquer un corps d'assemblage par cannelures au moyen duquel le travail de montage peut être facilité et le cliquetis d'une pièce assemblée par cannelures peut être réduit. Un corps d'assemblage par cannelures est doté d'un élément arbre (8) sur lequel des cannelures d'arbre (9a) sont formées et d'un élément tube d'arbre (10) sur lequel des cannelures de trou (11) sont formées. Chaque dent de cannelure (20) comporte une première dent (21) s'étendant dans la direction axiale et une seconde dent (22) séparée de la première dent (21) dans la direction axiale. Les premières dents (21) et les secondes dents (22) comportent des phases différentes, les premières dents (21) viennent en butée contre des dents de cannelure de trou (12) des cannelures de trou (11) positionnées dans une direction circonférentielle, et les secondes dents (22) viennent en butée contre les dents de cannelure de trou (12) positionnées dans l'autre direction circonférentielle. L'élément arbre (8) est doté d'une première section d'arbre (31) sur laquelle sont formées les multiples premières dents (21), d'une seconde section d'arbre (32) sur laquelle sont formées les multiples secondes dents (22) et d'une section de torsion (33) qui est interposée entre la première section d'arbre (31) et la seconde section d'arbre (32) et qui peut subir une déformation de torsion.
PCT/JP2017/020714 2017-03-16 2017-06-02 Corps d'assemblage par cannelures et procédé permettant de fabriquer un corps d'assemblage par cannelures WO2018167992A1 (fr)

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Publication number Priority date Publication date Assignee Title
JP7156039B2 (ja) * 2019-01-09 2022-10-19 株式会社デンソー アクチュエータ

Citations (7)

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Publication number Priority date Publication date Assignee Title
JPH0372118U (fr) * 1989-11-15 1991-07-22
JP2001003947A (ja) * 1999-06-22 2001-01-09 Ntn Corp 動力伝達軸および等速自在継手の外側継手部材
US20070177939A1 (en) * 2006-01-27 2007-08-02 Kozlowski Keith A Spline arrangement for rotatably coupling two members
JP2009214804A (ja) * 2008-03-12 2009-09-24 Nsk Ltd 電動式パワーステアリング装置
JP2012117560A (ja) * 2010-11-29 2012-06-21 Jtekt Corp 伸縮可能シャフトおよびその製造方法並びに車両用操舵装置
JP2013189195A (ja) * 2007-10-22 2013-09-26 Ntn Corp 車輪用軸受装置、およびその製造方法
JP2014114915A (ja) * 2012-12-11 2014-06-26 Jtekt Corp 伸縮シャフトおよびステアリング装置

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4280984B2 (ja) * 2003-08-27 2009-06-17 株式会社ジェイテクト 摺動シャフト
JP2009250303A (ja) * 2008-04-03 2009-10-29 Denso Corp 動力伝達装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0372118U (fr) * 1989-11-15 1991-07-22
JP2001003947A (ja) * 1999-06-22 2001-01-09 Ntn Corp 動力伝達軸および等速自在継手の外側継手部材
US20070177939A1 (en) * 2006-01-27 2007-08-02 Kozlowski Keith A Spline arrangement for rotatably coupling two members
JP2013189195A (ja) * 2007-10-22 2013-09-26 Ntn Corp 車輪用軸受装置、およびその製造方法
JP2009214804A (ja) * 2008-03-12 2009-09-24 Nsk Ltd 電動式パワーステアリング装置
JP2012117560A (ja) * 2010-11-29 2012-06-21 Jtekt Corp 伸縮可能シャフトおよびその製造方法並びに車両用操舵装置
JP2014114915A (ja) * 2012-12-11 2014-06-26 Jtekt Corp 伸縮シャフトおよびステアリング装置

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