WO2004020879A1 - ステアリングシャフト用ダストカバー - Google Patents
ステアリングシャフト用ダストカバー Download PDFInfo
- Publication number
- WO2004020879A1 WO2004020879A1 PCT/JP2003/010689 JP0310689W WO2004020879A1 WO 2004020879 A1 WO2004020879 A1 WO 2004020879A1 JP 0310689 W JP0310689 W JP 0310689W WO 2004020879 A1 WO2004020879 A1 WO 2004020879A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- steering shaft
- dust cover
- contact member
- friction material
- cylindrical contact
- Prior art date
Links
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/50—Sealings between relatively-movable members, by means of a sealing without relatively-moving surfaces, e.g. fluid-tight sealings for transmitting motion through a wall
- F16J15/52—Sealings between relatively-movable members, by means of a sealing without relatively-moving surfaces, e.g. fluid-tight sealings for transmitting motion through a wall by means of sealing bellows or diaphragms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/08—Insulating elements, e.g. for sound insulation
- B60R13/0846—Insulating elements, e.g. for sound insulation for duct, cable or rod passages, e.g. between engine and passenger compartments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/08—Insulating elements, e.g. for sound insulation
- B60R13/0846—Insulating elements, e.g. for sound insulation for duct, cable or rod passages, e.g. between engine and passenger compartments
- B60R13/0853—Insulating elements, e.g. for sound insulation for duct, cable or rod passages, e.g. between engine and passenger compartments specially adapted for movable parts, e.g. gears levers, pedals
-
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3224—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip capable of accommodating changes in distances or misalignment between the surfaces, e.g. able to compensate for defaults of eccentricity or angular deviations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J3/00—Diaphragms; Bellows; Bellows pistons
- F16J3/04—Bellows
- F16J3/041—Non-metallic bellows
Definitions
- the present invention relates to a dust cover for a steering shaft, which reduces the steering torque of the steering shaft and reduces the friction noise with the steering shaft.
- a through hole is formed in the dash panel of the vehicle to penetrate the steering shaft.
- a column hole cover is attached to the through hole, and the rear end of the column hole cover contacts the steering shaft.
- dust canisters are provided to protect from dust and mud.
- the dust cover 5 is provided with a cylindrical contact portion 6 that comes into sliding contact with the rotating steering shaft 2, and an inner diameter side of the cylindrical contact portion 6 is attached to the steering shaft 2.
- a seal lip portion 7 for sealing and soundproofing is formed.
- a bellows-like portion 8 having flexibility is formed between the sliding contact portion 6 and the vehicle rear end 4a of the column hole cover 4.
- the bellows-like portion 8 follows the displacements such as eccentricity, twisting, etc. It is configured to deform and absorb these displacements such as eccentricity and kinking, and to provide a soundproofing effect.
- the bellows-like portion 8 follows these displacements such as eccentricity or twisting. It is elastically deformed and tries to absorb these displacements such as eccentricity and twisting.
- the cylindrical contact portion 6 since the cylindrical contact portion 6 is formed only of rubber, it is elastically deformed corresponding to the elastic deformation of the bellows-shaped portion 8. As a result, the elastically deformed cylindrical contact portion 6 makes the contact resistance to the rotating steering shaft 2 relatively high, which increases the steering torque of the steering shaft 2 and generates a friction noise with the steering shaft 2. Then there is something.
- the sealing performance and the soundproof performance can be maintained high.
- the steering resistance of the steering shaft 2 has been increased when the contact resistance to the steering shaft 2 has been relatively high, but the shim opening of the cylindrical contact 6 (or the seal lip 7) has to be set relatively low.
- the contact resistance to the rotating steering shaft 2 is reduced, and the steering torque of the steering shaft 2 can be reduced, but on the other hand, the sealing performance and the soundproofing performance may be reduced. Disclosure of the invention
- An object of the present invention is to provide a dust cover for a steering shaft that is lighter and has reduced friction noise with a steering shaft.
- a dust cover for a steering shaft according to the first invention of the present application is mounted on a vehicle body so as to be in contact with the steering shaft, and is provided in a dust cover for a steering shaft for protecting from dust and muddy water.
- a low friction material is coated or baked on a portion where the cylindrical contact member contacts the steering shaft
- the cylindrical contact member itself is a low friction material.
- the cylindrical contact member that comes into contact with the rotating steering shaft while sliding is provided.
- the cylindrical contact member is provided radially outward of the cylindrical contact member to reinforce the cylindrical contact member.
- the rigidity of the cylindrical contact member is increased by providing the cylindrical reinforcing member. Therefore, when the steering shaft undergoes displacement such as eccentricity, twisting, runout, or axial movement, the cylindrical contact member always follows the displacement of the steering shaft, such as eccentricity and twisting, and is displaced together with the steering shaft. be able to.
- the low friction material is coated or baked on the part where the cylindrical contact member comes into contact with the steering shaft, or the contact resistance to the rotating steering shaft because the cylindrical contact member itself is a low friction material And the steering torque of the steering shaft can be reduced.
- the low friction material may be any one of a fluorocarbon resin, molybdenum, graphite, and Teflon.
- the low friction material is one of fluorine resin, molybdenum, graphite, and Teflon, and the contact resistance with respect to the rotating steering shaft can be reduced satisfactorily.
- the dust cover for a steering shaft according to the first invention may include a seal lip portion that contacts the steering shaft and performs a sealing action. Wear. According to this configuration, the cylindrical contact member having high rigidity is formed.
- the seal lip part can always follow the displacement of
- the sealing lip portion can exhibit sufficient sealing performance even if the opening of the sealing lip is relatively low, and as a result, the rotating steering shaft while maintaining good sealing performance and soundproofing performance. As a result, the steering torque of the steering shaft can be reduced, and the friction noise with the steering shaft can be reduced.
- a bellows-like portion having flexibility can be formed between the tubular reinforcing member and the vehicle body mounting portion. According to such a configuration, when the steering shaft is displaced such as eccentricity or twisting, the bellows-like portion is elastically deformed following the displacement such as eccentricity or twisting, and the eccentricity or twisting is caused. Can be favorably absorbed.
- the dust cover for a steering shaft according to the second invention is mounted on a vehicle body so as to be in contact with the steering shaft, and is provided in a dust cover for a steering shaft for protecting from dust and muddy water.
- a cylindrical contact member that slides on and contacts the rotating steering shaft
- a low friction material is coated or baked on a portion where the cylindrical contact member is in contact with the steering shaft
- the cylindrical contact member itself is a low friction material.
- the cylindrical contact member that comes into contact with the rotating steering shaft while sliding is provided, and the rigidity of the cylindrical contact member itself is relatively high. Therefore, when the steering shaft is displaced due to eccentricity, twisting, runout, axial movement, etc., the cylindrical contact member always follows the displacement such as eccentricity, twisting, etc. of the steering shaft. Therefore, it can be displaced together with the steering shaft.
- the low friction material is coated or baked on the portion where the cylindrical contact member comes into contact with the steering shaft, or because the cylindrical contact member itself is a low friction material, the rotating steering ring is formed. By lowering the contact resistance to the shaft, the steering torque of the steering shaft can be reduced.
- the low-friction material may be any one of a fluorocarbon resin, molybdenum, graphite, and Teflon. In this case, the contact resistance to the rotating steering shaft can be satisfactorily reduced.
- the steering shaft dust cover according to the second aspect of the present invention may include a seal lip portion that contacts the steering shaft and performs a sealing action.
- the seal lip portion since the cylindrical contact member can always follow the displacement of the steering shaft, the seal lip portion has a clearance (with play) between the cylindrical contact member and the steering shaft. ⁇ Only the amount of eccentricity needs to be sealed, and the load on the seal lip is significantly reduced. Therefore, the seal lip can exhibit sufficient sealing performance even with a relatively small squeeze opening. As a result, the seal lip can be kept in contact with the rotating steering shaft while maintaining good sealing performance and soundproofing performance. By lowering the resistance, the steering torque of the steering shaft can be reduced, and the friction noise with the steering shaft can be reduced.
- a bellows-like portion having flexibility can be formed between the tubular contact member and the vehicle body attaching portion.
- the bellows-like portion is elastically deformed following the eccentricity or kinking or other displacement, and the eccentricity or kinking is displaced. It can be absorbed well.
- the dust cover for a steering shaft according to the third invention is a steering shaft dust cover.
- a low friction material is coated or baked on a portion where the cylindrical metal member comes into contact with the steering shaft.
- the highly rigid cylindrical metal member that comes into contact with the rotating steering shaft while sliding is provided. Therefore, when the steering shaft is displaced by eccentricity, twisting, deflection, axial movement, etc., the cylindrical metal member always follows the displacement of the steering shaft, such as eccentricity and twisting, and is displaced together with the steering wheel. can do.
- the low friction material is coated or baked in the area where the tubular metal member comes into contact with the steering, the contact resistance to the rotating steering shaft is reduced, and the steering torque of the steering shaft is reduced. Can be lighter.
- the low-friction material can be any one of a fluorocarbon resin, molybdenum, graphite, and Teflon, and has a low contact resistance with respect to the rotating steering shaft. It can be reduced satisfactorily.
- the dust cover for the steering shaft according to the third aspect of the present invention can include a seal lip portion that comes into contact with the steering shaft to perform a sealing action.
- the seal lip since the cylindrical metal member with high rigidity can always follow the displacement of the steering shaft, the seal lip is twisted by the clearance (with backlash) between the cylindrical metal member and the steering shaft. Only the sealing action is required, and the load on the seal lip is significantly reduced. Therefore, the sealing lip portion can exhibit sufficient sealing performance even when the opening of the sealing lip is relatively low, and as a result, rotates while maintaining good sealing performance and soundproofing performance.
- the steering torque of the steering shaft can be reduced by reducing the contact resistance with the steering shaft, and the friction noise with the steering shaft can be reduced.
- a bellows-shaped portion having flexibility can be formed between the cylindrical metal member and the vehicle body attaching portion.
- the bellows-like portion is elastically deformed following the displacement such as eccentricity or twisting, and the displacement such as eccentricity or twisting is favorably reduced. Can be absorbed.
- the dust cover for a steering shaft according to the fourth invention is a dust cover for a steering shaft that is attached to a vehicle body so as to be in contact with the steering shaft and protects from dust and muddy water.
- a cover-side cylindrical contact member attached to the dust cover; a cylindrical reinforcing member for reinforcing the cylindrical contact member radially outward of the cover-side cylindrical contact ⁇ material; and a steering shaft. And a shaft-side cylindrical contact member that slides on and comes into contact with the cover-side cylindrical contact member.
- a cover-side cylindrical contact member attached to the dust cover, a cylindrical reinforcing member for reinforcing the cylindrical contact member radially outside the cover-side cylindrical contact member, and a steering shaft
- a shaft-side cylindrical contact member that slides on the cover-side cylindrical contact member to attach to the cover-side cylindrical contact member. Therefore, when the rigidity of the two cylindrical contact members is increased and the steering shaft is displaced such as eccentricity, kinking, deflection, axial movement, etc., the two cylindrical contact members are eccentric or kinked of the steering shaft. Can always follow the displacement of the steering shaft and be displaced together with the steering shaft.
- At least one of the portions where the two cylindrical contact members come into contact is coated or baked with a low-friction material. At least one of the contact members is itself a low friction material.
- a low-friction material is coated or baked, or at least one of the two cylindrical contact members is a low-friction material, and therefore has a low contact resistance to a rotating steering shaft.
- the low friction material may be any one of a fluorine-based resin, molybdenum, graphite, and Teflon. With this configuration, the contact resistance with respect to the rotating steering shaft can be reduced satisfactorily.
- the dust cover for a steering shaft may include a seal lip portion that contacts the steering shaft and performs a sealing action.
- the seal lip portion since the two cylindrical contact members having high rigidity can always follow the displacement of the steering shaft, the seal lip portion has a clearance between the two cylindrical contact members and the steering shaft (with a play). )
- the seal action only needs to be performed for the amount of eccentricity, greatly reducing the load on the seal lip. Therefore, the seal lip portion can exhibit sufficient sealing performance even if the squeeze opening is relatively low, and as a result, the contact resistance to the rotating steering shaft can be maintained while maintaining good sealing performance and soundproof performance.
- the steering torque of the steering shaft can be reduced, and the friction noise with the steering shaft can be reduced.
- FIG. 1 is a sectional view of a cover according to the first embodiment of the present invention.
- FIG. 2 is a sectional view of a dust cover for a steering shaft according to a second embodiment of the present invention.
- FIG. 3 is a cross-sectional view of a dust cover for engagement according to a third embodiment of the present invention.
- FIG. 4 is a sectional view of a dust cover for mooring according to a fourth embodiment of the present invention.
- FIG. 5 is a cross-sectional view of a steering shaft dust cover according to a fifth embodiment of the present invention.
- FIG. 6 shows the steering according to the sixth embodiment of the present invention.
- FIG. 1 A first figure.
- FIG. 7 is a sectional view of a dust cover according to a seventh embodiment of the present invention.
- FIG. 8 is a cross-sectional view of a steering shaft dust cover according to an eighth embodiment of the present invention.
- FIG. 9 is a sectional view of a steering shaft dust cover according to a ninth embodiment of the present invention.
- FIG. 10 is a sectional view of a steering shaft dust force bar according to the tenth embodiment of the present invention.
- FIG. 11 shows the eleventh embodiment of the present invention.
- FIG. 12 is a cross-sectional view of a dust bar according to a 12th embodiment of the present invention.
- FIG. 13 is a sectional view of a dust bar for a steering shaft according to a thirteenth embodiment of the present invention.
- FIG. 14 is a sectional view of a principal part of a dust cover for a steering shaft according to a fourteenth embodiment of the present invention.
- FIG. 15 is a cross-sectional view of a dust cover for a vehicle incorporating a dust bar according to the above embodiment of the present invention.
- FIG. 16 is a cross-sectional view of a conventional steering shaft dust cover.
- FIG. 1 is a sectional view of a first embodiment of the present invention (a dust cover).
- the vehicle dash panel 1 has a through hole 3 formed through the steering shaft 2, and a column hole cover 4 is attached to the through hole 3.
- a dust cover 10 is provided at the vehicle rear end 4 a of the cover 4 to protect it from dust and muddy water while contacting the steering shaft 2.
- the dust cover 10 reinforces the cylindrical contact member 11 that is a sliding bush that comes into contact with the rotating steering shaft 2 while sliding, and the cylindrical contact member 11 that is radially outward of the cylindrical contact tfe member 11.
- Iron pipe 12 as a cylindrical reinforcing member for making the vehicle, and a flexible double bellows provided between the cylindrical reinforcing member 12 and the rear end portion 4a of the column hole cover 14 in the vehicle. And a seal lip portion 14 that comes into contact with the steering shaft 2 to perform a sealing action.
- the outer diameter side of the double bellows portion is fixed to the column hole cover 4 all around.
- the iron tube 12, the bellows-shaped portion 13 made of rubber or the like, and the seal lip portion 14 made of rubber or the like are integrally formed, and are partially formed inside the iron tube 12. Width The sliding bush 11 having the pressure is press-fitted. Further, the seal lip portion 14 is integral with the bellows-shaped portion 13 and is arranged on the inner diameter side of the end of the iron pipe 12. Further, between the end of the seal lip portion 14 and the sliding bush 11, a drip reservoir 15 is provided.
- a low friction material is coated or baked on a portion (inner peripheral surface) where the sliding bush 11 contacts the steering shaft 2.
- the low friction material is selected from, for example, fluorine resin, molybdenum, graphite, Teflon, and the like.
- the sliding bush 11 itself may be a low friction material instead of the sliding bush in which the low friction material is coated or baked.
- the sliding bush 11 that comes into contact with the rotating steering shaft while sliding is provided.
- An iron tube for reinforcing the sliding bush 11 is provided radially outward of the sliding bush 11. 12 is provided to increase the rigidity of the sliding bush 11. Therefore, when the steering shaft 2 is displaced due to eccentricity, twisting, deflection, axial movement, etc., the sliding bush 11 always follows the displacement of the steering shaft 2 such as eccentricity, twisting, etc. And can be displaced together. Since the sliding bush 11 has a certain width, the amount of twisting of the clearance between the sliding bush 11 and the steering shaft 2 can be reduced accordingly.
- the inner peripheral surface where the sliding bush 11 contacts the steering shaft 2 is coated or baked with a low-friction material, or the sliding bush 11 itself rotates because it is a low-friction material.
- the seal lip portion 14 is formed with the sliding bush 11 and the steering shaft. Twist due to clearance (with backlash) from the shaft 2 ⁇ Only the amount of eccentricity needs to be sealed, and the load on the seal lip 14 is reduced, and the required minimum is achieved. Therefore, the sealing lip portion 14 can exhibit sufficient sealing performance even if the squeezing opening is relatively low, and as a result, the rotating steering shaft can be maintained while maintaining good sealing performance and soundproofing performance. 2, the steering torque of the steering shaft 2 can be reduced, and the friction noise with the steering shaft 2 can be reduced.
- the clearance between the sliding bush 11 and the steering shaft 2 is preferably less than 1 mm, and the clearance between the seal lip portion 14 and the steering shaft 2 is preferably less than 1 mm.
- the degree of freedom in designing the seal shape is increased, and the contact resistance with the steering shaft 2 can be reduced.
- the grease reservoir 15 is provided to prevent the darryling from running out, and the friction noise can be significantly reduced.
- the bellows-like portion 13 elastically deforms following the eccentricity or kinking or other displacement, and displaces the eccentricity or kinking. It can be absorbed well.
- FIG. 2 is a cross-sectional view of a steering shaft dust cover according to a second embodiment of the present invention.
- the iron pipe 12 has a small-diameter portion at both ends in the axial direction and a large-diameter portion at the center, and the sliding bush 11 integrally formed therewith has a width separated by a predetermined distance from each other. It consists of a pair of narrow sliding bush portions 11a and 11b, between which a seal lip portion 14 is arranged. A pair of grease reservoirs 15a and 15b are provided on both sides of the seal lip portion 14.
- the pair of sliding bushes 1 la and 1 1 b are each narrow, but are separated from each other by a predetermined distance, so that they can be displaced following the displacement of the steering shaft 2. It has the same effect as the form.
- the lubrication is richer than that of the first embodiment, the grease is prevented from running out, and the friction noise is reduced. It can be significantly reduced.
- a low-friction material is coated or baked on the inner peripheral surface where the sliding bushes 11a and li contact the steering shaft 2, or the sliding bushes 1la and 11b themselves have low friction. Since it is a material, the contact resistance to the rotating steering shaft 2 can be reduced, the steering torque of the steering shaft 2 can be reduced, and the friction noise with the steering shaft 2 can be reduced. (Third embodiment)
- FIG. 3 is a sectional view of a dust cover for a steering shaft according to a third embodiment of the present invention.
- the structure on the inner diameter side of the dust cover 10 is different from that of the first embodiment.
- the tubular reinforcing member (iron pipe) 12 is omitted and the bellows
- the sliding bush 11 is press-fitted into the inner diameter 13 a of the shape 13.
- the portion (inner peripheral surface) where the sliding bush 11 contacts the steering shaft 2 is coated or baked with a low friction material, or the sliding bush 11 itself is a low friction material. Therefore, the contact resistance with respect to the rotating steering shaft 2 can be reduced, the steering torque of the steering shaft 2 can be reduced, and the friction noise between the steering shaft 2 and the steering shaft 2 can be reduced. Similar effects can be exerted.
- a seal lip 14 is formed at one end of the inner diameter portion 13a, and a grease reservoir 15 is formed in an annular shape between the seal lip 14 and the end of the sliding bush 11. .
- the sliding bush 1 1 must have a certain degree of rigidity. Rigidity is improved by providing ribs for reinforcement on the outer periphery of the bush, eliminating the slip of the sliding bush (no rolling seam), and increasing the thickness of the bush.
- FIG. 4 is a sectional view of a dust cover for a steering shaft according to a fourth embodiment of the present invention.
- the structure on the inner diameter side of the dust cover 10 is different from that of the first embodiment shown in FIG. 1, and in the fourth embodiment, the seal lip portion 14 is a separate body, The sliding bush 11 is pressed into the end of the iron tube 12 on the opposite side. In this case, the same effect as in the above-described embodiment can be exhibited.
- FIG. 5 is a cross-sectional view of a steering shaft dust cover according to a fifth embodiment of the present invention.
- FIG. 6 is a sectional view of a dust cover for a steering shaft according to a sixth embodiment of the present invention.
- the structure on the inner diameter side is different from that of the first embodiment shown in FIG. 1, and in this embodiment, the sliding bush 11 is omitted, and a bellows-shaped portion 13 made of rubber or the like is used.
- the iron tube 12 is physically formed.
- the inner peripheral portion 13b of the bellows-like portion 13 is the same member as the bellows-like portion 13 as in the first embodiment, and acts as a cylindrical contact member.
- a low friction material 17 is coated or baked.
- the inner peripheral portion 13b and the bellows-shaped portion 13 are formed of different materials, and the inner peripheral portion 13b itself is formed. May be a low friction material.
- the low-friction material 17 may be, for example, a fluororesin, molybdenum, graphite, or Teflon, so that the contact resistance to the steering shaft 2 can be reduced. Also in this case, the same effects as those of the above-described embodiment can be exerted.
- FIG. 7 is a sectional view of a steering shaft dust cover according to a seventh embodiment of the present invention.
- the structure on the inner diameter side is different from that of the second embodiment shown in FIG. 2, and in the seventh embodiment, the sliding bushes 11a and 11b are omitted, and rubber and the like are used.
- An iron tube 12 is embedded and formed in the bellows-like portion 13. Also, both inner peripheral ends 13c, 13d of the bellows-shaped portion 13 act as cylindrical contact members, similarly to the sixth embodiment, and both inner peripheral ends 13
- the low friction material 17 is coated or baked on c and 13d. Portions corresponding to the circumferential ends 13c and 13d at both ends of the iron tube 12 are bent toward the steering shaft, and the iron tube 12 has a substantially U-shaped cross section.
- a seal portion 14 extending radially inward and contacting the outer periphery of the steering shaft 2 is formed between the inner peripheral end portions 13 c and 13 d of the bellows-shaped portion 13.
- the inner peripheral ends 13c, 13d themselves may be low friction materials.
- the low friction material 17 may be, for example, a fluororesin, molybdenum, graphite, or Teflon, so that the contact resistance to the steering shaft 2 can be reduced. Also in this case, the same effects as those of the above-described embodiment can be exerted.
- FIG. 8 is a sectional view of a steering shaft dust cover according to an eighth embodiment of the present invention.
- the structure on the inner diameter side is different from that of the second embodiment.
- the sliding bush 11 is omitted, and the inner diameter portion 1 of the bellows-like portion 13 made of rubber or the like is omitted.
- an iron tube 12 is integrally formed.
- This iron tube 1 2 is made of rotating stearin
- the low friction material 17 is coated or baked on the inner peripheral surface of the iron pipe 12 so as to function as a cylindrical metal member that comes into contact with the metal pipe 2 while sliding.
- the low friction material 17 can be selected from, for example, fluororesin, molybdenum, graphite, and Teflon. Thereby, the contact resistance with respect to the steering shaft 2 can be reduced.
- a seal lip 14 is formed on one end of the inner diameter portion 13 a of the bellows portion 13, and a grease reservoir 15 is formed between the seal lip 14 and the end face of the iron pipe 12. Have been. Also in this case, the same effects as those of the above-described embodiment can be exerted.
- FIG. 9 is a sectional view of a steering shaft dust cover according to a ninth embodiment of the present invention.
- the dust cover of the present embodiment is different from the first embodiment in that the bellows portion 13 is replaced with a first bellows portion 18 and a second bellows portion 19 which are separately formed. .
- the inner diameter portion 18a of the first bellows-shaped portion 18 is integrally formed with the seal lip portion 14 and the iron tube 12 and a sliding bush 11 is press-fitted on the inner diameter side of the iron tube 12.
- a darrys sump 15 is formed between the seal lip portion 14 and the sliding bush 11.
- a low friction material is coated or baked on a portion (inner peripheral surface) where the sliding bush 11 contacts the steering shaft 2.
- the low friction material is selected from, for example, fluorine resin, molybdenum, graphite, Teflon, and the like.
- the sliding bush 11 itself may be a low friction material instead of the sliding bush in which the low friction material is coated or baked.
- the outer diameter portion of the first bellows portion 18 is fixed to the entire inner periphery of the front end of the column hole cover 4 as in the first embodiment.
- the second bellows portion 19 is disposed on the vehicle rear side of the first bellows portion 18.
- the outer diameter of the second bellows-like portion 19 is formed by molding an iron tube 4 b into a body and is pressed into the inner periphery of the column hole cover 4.
- the inner diameter side of the second bellows portion 19 is press-fitted to the outer periphery of the first bellows portion 18. Also in the case of the present embodiment, the same effect as in the above-described embodiment is exhibited. Can be.
- FIG. 10 is a sectional view of a steering shaft dust cover according to the tenth embodiment of the present invention.
- This embodiment differs from the first embodiment in the structure on the inner diameter side, and includes a cover-side tubular contact member 21 attached to the dust cover 10 and a cover-side tubular contact member attached to the steering shaft 2. And a shaft-side cylindrical contact member 22 that comes into contact with the contact member 21 while sliding.
- the cover-side tubular contact member 21 and the shaft-side tubular contact member 22 are preferably sliding bushes, and at least one of the portions where the two tubular contact members 21 and 22 come into contact with each other.
- Low friction material is coated or baked.
- At least one of the cylindrical contact members 21 and 22 may itself be a low friction material.
- the low friction material is preferably, for example, a fluorine resin, molybdenum, graphite, Teflon, or the like. Stable contact resistance can be obtained regardless of surface roughness or dimensional error of the main shaft.
- one end of the iron pipe 12 extends radially inward to form a substantially L-shaped cross section, and the other end of the iron pipe 12 has a separate seal. Lip part 14 is attached. Also in the case of the present embodiment, the same effects as those of the above-described embodiment can be exhibited.
- FIG. 11 is a sectional view of a dust cover 10 for a steering shaft according to the eleventh embodiment of the present invention.
- the inner diameter side structure is different from that of the first embodiment, and the cover side cylindrical contact member 21 is integrally formed with the inner diameter portion 13 a of the bellows-shaped portion 13 and the iron pipe 12.
- the steering shaft 2 is provided with a shaft-side cylindrical contact member 22 that comes into contact with the cover-side cylindrical contact member 21 while sliding.
- the cover-side tubular contact member 21 and the shaft-side tubular contact member 22 are respectively At a substantially central portion of each of them, a rectangular portion 21a and a concave portion 22a fitted to the rectangular portion 21a are formed.
- the cover-side tubular contact member 21 and the shaft-side tubular contact member 22 are preferably sliding bushes, and at least one of the portions where the two tubular contact members 21 and 22 come into contact with each other.
- Low friction material is coated or baked.
- At least one of the two cylindrical contact members 21 and 22 may itself be a low friction material.
- the low friction material for example, fluororesin, molybdenum, graphite, Teflon, and the like are selected.
- the seal lip portion 14 is formed integrally with one end of the inner diameter portion 13a of the bellows-like portion 13 made of rubber or the like. In this case, the same effect as in the above-described embodiment can be exhibited.
- FIG. 12 is a cross-sectional view of a steering shaft dust force bar according to a 12th embodiment of the present invention.
- the structure on the inner diameter side is different from that of the first embodiment, and the inner diameter portion 13 a of the dust cover 10, the iron pipe 12 and the cover-side cylindrical contact member 21 are integrated.
- the steering shaft 2 is provided with a shaft-side cylindrical contact member 22 that comes into sliding contact with the cover-side cylindrical contact member 21.
- a flange portion is formed radially inward on the entire circumference, and at both ends of the shaft-side cylindrical contact member 22, a radially outward flange is formed. A part is formed.
- a third cylindrical contact member 23 is interposed between the cover-side cylindrical contact member 21 and the shaft-side cylindrical contact member 22.
- the cover-side cylindrical contact member 21, the shaft-side cylindrical contact member 22, and the third cylindrical contact member 23 are preferably sliding bushes, and these cylindrical contact members 2 1, 2
- a low-friction material is coated or baked on at least one of the parts where 23 and 23 come into contact.
- At least one of the two cylindrical contact members 21, 22, 23 is The material itself may be a low friction material.
- the low friction material is, for example, a fluororesin, molybdenum, graphite, Teflon, or the like, whereby the contact resistance with respect to the steering shaft 2 can be reduced.
- the seal lip portion 14 is provided at one end of the third cylindrical contact member 23, and is provided through a gap between the cover-side cylindrical contact member 21 and the shaft-side cylindrical contact member 22. It protrudes axially outward.
- a grease reservoir 15 is formed between the seal lip portion 14 and the cylindrical contact member 22. In this case, the same effect as in the above-described embodiment can be exhibited.
- FIG. 13 is a sectional view of a dust bar for a steering shaft according to a thirteenth embodiment of the present invention.
- a force bar-side cylindrical contact member 21 attached to the dust cover 10 is provided as compared with the first embodiment.
- the cover-side cylindrical contact member 21 is preferably a sliding bush, has a flange portion protruding radially outward at one end, and a portion that contacts the steering shaft 2 (the inner peripheral surface). ) Has a low friction material coated or baked.
- the cover-side cylindrical contact member 21 itself may be a low friction material.
- the low-friction material can be selected from, for example, fluororesin, molybdenum, graphite, teflon, and the like, whereby the contact resistance to the steering shaft 2 can be reduced.
- the seal lip portion 14 is formed separately from the inner diameter portion 13 a side integral with the bellows-shaped portion 13 and is press-fitted and fixed to the steering shaft 2 side. 21 It is in contact with the flange of 1. In this case, the same effect as in the above-described embodiment can be exerted.
- FIG. 14 is a sectional view of a main part of a dust bar for a steering shaft according to a 14th embodiment of the present invention.
- the illustration of the joint between the dust cover 10 and the column hole cover 4 is omitted.
- the illustration of the steering shaft 2 is also omitted.
- a sliding bush 21 is integrally formed on the inner diameter side of the inner cylindrical portion 13a of the double bellows portion 13.
- An annular groove 21 c is formed in the outer periphery near one end of the sliding bush 21 (the right side in FIG. 14), and one end of the inner cylindrical portion 13 a is formed therein (see FIG. 1). (Right center of 4) is fitted with a radially inward annular projection 13.
- the other end (left side in FIG. 14) of the inner cylindrical portion 13a extends inward in the radial direction, and a seal lip portion 14 extending axially to the left on the inner peripheral side is formed in a body. ing.
- the inside of the seal lip part 14 in the axial direction (the right side in Fig. 14)
- An annular gap 30 is formed between the extension part and the inside diameter cylindrical part, and the other end of the sliding bush 21 slides there. (Left side in Fig. 14) has an extension at the tip.
- a large number of grease reservoir grooves 35 extending substantially parallel to the axial direction are formed in the inner peripheral portion of the sliding bush 21.
- the sliding bush 21 of the fourteenth embodiment is also made of the same low friction material as that of the above-described embodiment, or is subjected to a low friction material treatment.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Sealing With Elastic Sealing Lips (AREA)
- Sealing Devices (AREA)
- Steering Controls (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/525,947 US20050250586A1 (en) | 2002-08-27 | 2003-08-25 | Dust cover for steering shaft |
EP03791262A EP1548339A4 (en) | 2002-08-27 | 2003-08-25 | DUST COVER FOR STEERING COLUMN |
JP2004532698A JPWO2004020879A1 (ja) | 2002-08-27 | 2003-08-25 | ステアリングシャフト用ダストカバー |
AU2003257683A AU2003257683A1 (en) | 2002-08-27 | 2003-08-25 | Dust cover for steering shaft |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002-246598 | 2002-08-27 | ||
JP2002246598 | 2002-08-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004020879A1 true WO2004020879A1 (ja) | 2004-03-11 |
Family
ID=31972425
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/010689 WO2004020879A1 (ja) | 2002-08-27 | 2003-08-25 | ステアリングシャフト用ダストカバー |
Country Status (5)
Country | Link |
---|---|
US (1) | US20050250586A1 (ja) |
EP (1) | EP1548339A4 (ja) |
JP (1) | JPWO2004020879A1 (ja) |
AU (1) | AU2003257683A1 (ja) |
WO (1) | WO2004020879A1 (ja) |
Cited By (7)
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JP2006131061A (ja) * | 2004-11-05 | 2006-05-25 | Keeper Co Ltd | ステアリングギヤボックス用ダストカバー |
JP2018016149A (ja) * | 2016-07-26 | 2018-02-01 | 日本精工株式会社 | ダストカバー |
JP2018017278A (ja) * | 2016-07-26 | 2018-02-01 | 日本精工株式会社 | ダストカバー |
JP2019056422A (ja) * | 2017-09-21 | 2019-04-11 | 日本ピラー工業株式会社 | 密封装置 |
JPWO2019027004A1 (ja) * | 2017-08-04 | 2020-04-02 | 日本精工株式会社 | シャフトの結合構造および伸縮シャフト |
JP2020186750A (ja) * | 2019-05-10 | 2020-11-19 | 日本精工株式会社 | ダストカバー |
US20220289266A1 (en) * | 2021-03-12 | 2022-09-15 | Hyundai Motor Company | Steering shaft temporary support structure of vehicle |
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JP4987300B2 (ja) * | 2004-01-15 | 2012-07-25 | 日本精工株式会社 | ステアリングシャフト用ダストカバー |
JP4739745B2 (ja) * | 2004-12-21 | 2011-08-03 | Nok株式会社 | 遮音シール付き密封装置 |
JP5120763B2 (ja) * | 2006-07-05 | 2013-01-16 | Nok株式会社 | 密封装置 |
KR101405355B1 (ko) * | 2006-11-21 | 2014-06-10 | 엔오케이 가부시키가이샤 | 밀봉 장치 |
US7878544B2 (en) * | 2006-12-01 | 2011-02-01 | Chrysler Group Llc | Seal for steering assemblies |
DE102007027135B4 (de) * | 2007-06-13 | 2010-09-09 | Audi Ag | Abdichtvorrichtung |
FR2964944B1 (fr) | 2010-09-20 | 2013-05-24 | Snecma | Dispositif d'etancheite a soufflet pour la traversee de cloison par une biellette d'un systeme de commande de l'orientation des pales de soufflante d'un turbopropulseur |
DE102011105449A1 (de) * | 2011-06-22 | 2012-12-27 | GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) | Ringförmiger Dichtkörper |
WO2013075739A1 (en) * | 2011-11-23 | 2013-05-30 | Abb Research Ltd | A sealing system, an industrial robot with a sealing system, and a method for providing a sealing surface |
JP5964201B2 (ja) | 2012-10-23 | 2016-08-03 | Nok株式会社 | オイルシール |
EP2919913A1 (en) * | 2012-11-15 | 2015-09-23 | Sandvik Intellectual Property AB | Mechanical actuator |
US9109702B2 (en) | 2013-03-21 | 2015-08-18 | Caterpillar Inc. | Boot seal for machine system and method |
FR3024894B1 (fr) * | 2014-08-12 | 2016-08-26 | Peugeot Citroen Automobiles Sa | Dispositif d'etancheite a piece assurant l'etancheite et logeant une bague de guidage en translation et en rotation |
CN104590360B (zh) * | 2014-12-20 | 2017-08-04 | 北汽银翔汽车有限公司 | 转向防尘罩结构 |
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US11167787B2 (en) * | 2018-03-30 | 2021-11-09 | Steering Solutions Ip Holding Corporation | Collapsible steering column assembly |
US11306822B2 (en) * | 2018-07-25 | 2022-04-19 | Nok Corporation | Sealing device |
EP3828447B1 (en) * | 2018-07-25 | 2022-04-13 | NOK Corporation | Sealing device |
JP7203970B2 (ja) * | 2019-06-12 | 2023-01-13 | Nok株式会社 | 密封装置 |
US11703090B2 (en) * | 2020-02-25 | 2023-07-18 | Nissan North America, Inc. | Vehicle drivetrain system with a dual wall boot |
DE102020119793A1 (de) | 2020-07-28 | 2022-02-03 | Bayerische Motoren Werke Aktiengesellschaft | Schwingungsdämpfungselement zur Reduzierung von Körperschall |
DE102020121886A1 (de) * | 2020-08-20 | 2022-02-24 | Woco Industrietechnik Gmbh | KFZ-Lenksäulenlagerung |
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- 2003-08-25 US US10/525,947 patent/US20050250586A1/en not_active Abandoned
- 2003-08-25 EP EP03791262A patent/EP1548339A4/en not_active Withdrawn
- 2003-08-25 AU AU2003257683A patent/AU2003257683A1/en not_active Abandoned
- 2003-08-25 WO PCT/JP2003/010689 patent/WO2004020879A1/ja not_active Application Discontinuation
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Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006131061A (ja) * | 2004-11-05 | 2006-05-25 | Keeper Co Ltd | ステアリングギヤボックス用ダストカバー |
JP2018016149A (ja) * | 2016-07-26 | 2018-02-01 | 日本精工株式会社 | ダストカバー |
JP2018017278A (ja) * | 2016-07-26 | 2018-02-01 | 日本精工株式会社 | ダストカバー |
JPWO2019027004A1 (ja) * | 2017-08-04 | 2020-04-02 | 日本精工株式会社 | シャフトの結合構造および伸縮シャフト |
US11022179B2 (en) | 2017-08-04 | 2021-06-01 | Nsk Ltd. | Shaft coupling structure and telescopic shaft |
JP2019056422A (ja) * | 2017-09-21 | 2019-04-11 | 日本ピラー工業株式会社 | 密封装置 |
JP2020186750A (ja) * | 2019-05-10 | 2020-11-19 | 日本精工株式会社 | ダストカバー |
JP7314609B2 (ja) | 2019-05-10 | 2023-07-26 | 日本精工株式会社 | ダストカバー |
US20220289266A1 (en) * | 2021-03-12 | 2022-09-15 | Hyundai Motor Company | Steering shaft temporary support structure of vehicle |
US11820420B2 (en) * | 2021-03-12 | 2023-11-21 | Hyundai Motor Company | Steering shaft temporary support structure of vehicle |
Also Published As
Publication number | Publication date |
---|---|
EP1548339A4 (en) | 2006-02-08 |
JPWO2004020879A1 (ja) | 2005-12-15 |
AU2003257683A1 (en) | 2004-03-19 |
EP1548339A1 (en) | 2005-06-29 |
US20050250586A1 (en) | 2005-11-10 |
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