WO2022267241A1 - 转向管柱用塑料轴承 - Google Patents

转向管柱用塑料轴承 Download PDF

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Publication number
WO2022267241A1
WO2022267241A1 PCT/CN2021/118714 CN2021118714W WO2022267241A1 WO 2022267241 A1 WO2022267241 A1 WO 2022267241A1 CN 2021118714 W CN2021118714 W CN 2021118714W WO 2022267241 A1 WO2022267241 A1 WO 2022267241A1
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WO
WIPO (PCT)
Prior art keywords
middle ring
positioning
wall
steering column
ring
Prior art date
Application number
PCT/CN2021/118714
Other languages
English (en)
French (fr)
Inventor
李新旺
Original Assignee
人本股份有限公司
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Filing date
Publication date
Application filed by 人本股份有限公司 filed Critical 人本股份有限公司
Priority to US17/914,762 priority Critical patent/US20240246599A1/en
Publication of WO2022267241A1 publication Critical patent/WO2022267241A1/zh

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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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/16—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
    • F16C19/163—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls with angular contact
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/067—Fixing them in a housing
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/16—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
    • 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
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/38—Ball cages
    • F16C33/41—Ball cages comb-shaped
    • F16C33/412—Massive or moulded comb cages, e.g. snap ball cages
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/38—Ball cages
    • F16C33/44—Selection of substances
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/581—Raceways; Race rings integral with other parts, e.g. with housings or machine elements such as shafts or gear wheels
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/583—Details of specific parts of races
    • F16C33/586—Details of specific parts of races outside the space between the races, e.g. end faces or bore of inner ring
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/62—Selection of substances
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/66—Special parts or details in view of lubrication
    • F16C33/6696—Special parts or details in view of lubrication with solids as lubricant, e.g. dry coatings, powder
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/80—Labyrinth sealings
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C43/00—Assembling bearings
    • F16C43/04—Assembling rolling-contact bearings
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/20—Land vehicles
    • F16C2326/24—Steering systems, e.g. steering rods or columns

Definitions

  • the invention relates to the technical field of bearings, in particular to a plastic bearing for a steering column.
  • the existing commonly used steering column bearings for automobiles are ordinary ball bearings.
  • This kind of bearings are mainly thin-walled series bearings.
  • their rotational speed is relatively low, generally around 100rpm, and their load-carrying capacity requires It is not high, it receives both axial and radial loads in the working environment, and its working environment temperature is not high, generally between minus 40°C and 80°C.
  • the requirements are becoming more and more special, such as lightweight bearings, self-lubricating bearings, bearings with self-aligning functions, etc.
  • the current ordinary ball bearings cannot meet the functions of lightweight self-lubricating and other functions, and the assembly is not convenient enough. It is not conducive to improving the use effect and use efficiency of the overall structure.
  • the present invention provides a plastic bearing for a steering column, the overall structure of which is more compact, and at the same time, the structure is simple and easy to realize, and the assembly is also very convenient.
  • the present invention provides a plastic bearing for a steering column, which includes a casing (1), an inner ring (3) and a middle ring (2), and the middle ring (2) is sleeved on the inner ring ( 3) Outside, a cage (4) and balls (41) are arranged between the middle ring (2) and the inner ring (3), and the balls (41) are rotatably arranged on the cage (4), and the
  • the housing (1) is formed with a housing chamber (11)
  • the middle ring (2) is arranged on In the accommodating chamber (11)
  • a number of guide protrusions (12) are provided on the inner wall of the accommodating chamber (11)
  • positioning protrusions (12) are formed on the outer wall of the middle ring (2) corresponding to both sides of the guide protrusions (12).
  • Protrusion (21) an insertion slot is formed between the two positioning protrusions (21), the insertion slot is plugged and matched with the guide protrusion (12), and the inner wall of the accommodating cavity (11) is also provided with Several buckles (14), the outer wall of the middle ring (2) is provided with a block (22) corresponding to the buckle (14), and the buckle (14) is buckled on the block (22) to form the middle ring (2 ) and the fixing of the case (1).
  • the beneficial effect of this setting is: the overall structure is relatively compact, and the purpose of saving space is realized; during installation, only the cage (4) and balls (41) are installed on the middle ring (2), and then the inner ring (3) Socketed with the middle ring (2), the rotation connection of the two can be realized, and then according to the cooperation of the guide protrusion (12) and the insertion groove, the middle ring (2) is put into the housing (1) accommodating cavity In (11), during this process, the clamping block (22) and the buckle (14) are clamped to realize the fixing of the middle ring (2) on the casing (1), so that the assembly is simple and the assembly process is realized.
  • the entire bearing is made of plastic except for the ball (41), which realizes the lightweight of parts; since the whole bearing is mostly made of plastic, it can be self-lubricated without too much lubricating oil, which realizes cost saving and reduction Harm to environmental pollution; plastic materials can be processed by injection molding with high processing efficiency and can completely replace grinding processing. At the same time, this structure is simple, which is conducive to realization and improves the installation efficiency of the overall structure.
  • the buckle (14) is provided with a bump (15) on the side facing the block (22).
  • the contact surface between the protrusion (15) and the clamping block (22) is arranged on an inclined plane, and the contact surface between the clamping block (22) and the outer edge of the accommodating cavity (11) is arranged on an inclined plane.
  • such setting makes the clamping action of the clamping block (22) and the buckle (14) smoother, and improves the assembly efficiency.
  • the inner wall of the accommodating cavity (11) is further provided with positioning ribs (13) corresponding to both sides of the positioning protrusion (21).
  • the positioning ribs (13) and the positioning protrusions (21) are both wedge-shaped.
  • the positioning rib (13) is arranged in close contact with the outer wall of the positioning protrusion (21).
  • the beneficial effect of such setting is: it can achieve a better guiding installation effect, and at the same time, the structure is simple and the stability is high.
  • a positioning flange (17) is provided on the bottom surface of the accommodating cavity (11), and a dust-proof groove (32) is provided on the end surface of the inner ring (3) corresponding to the position of the positioning flange (17). ), the positioning flange (17) is set in the dust-proof groove (32).
  • the positioning flange (17) is in clearance fit with the dust-proof groove (32).
  • the beneficial effect of such setting is: setting in this way, a labyrinth structure is formed through the combination of the dust-proof groove (32) and the positioning flange (17), ensuring that foreign matter will not fall into the inside of the bearing, improving the use stability of the overall structure, and at the same time the structure It is simple, easy to implement, and effectively reduces the weight of the overall structure to meet the needs of lightweight use.
  • the positioning flange (17) and the dust-proof groove (32) are closely matched, making it easier for the positioning flange (17) to fall into the anti-dust groove. Dust tank (32), the installation is smoother and more convenient.
  • assembly ribs (16) are arranged on the outer wall of the casing (1) along the circumferential direction, and guiding ribs for assembly guidance are also arranged on the outer wall of the casing (1).
  • the beneficial effect of such arrangement is: the pressing force with the casing can be guaranteed not to be too large by assembling the convex rib (16), and the structure is relatively simple at the same time, which is beneficial for realization and convenient for production and processing.
  • the inner diameter surface of the inner ring (3) is configured as a profiled surface.
  • Fig. 1 is the structural representation of the embodiment of the present invention.
  • Fig. 2 is a schematic diagram of an explosion structure of an embodiment of the present invention.
  • Fig. 3 is a schematic cross-sectional structure diagram of an embodiment of the present invention.
  • the first embodiment of the plastic bearing for the steering column of the present invention is shown in Figures 1 to 3: it includes a casing (1), an inner ring (3) and a middle ring (2), and the middle ring (2) is sleeved Outside the inner ring (3), a cage (4) and balls (41) are arranged between the middle ring (2) and the inner ring (3), and the balls (41) are rotatably arranged on the cage (4)
  • the casing (1), the inner ring (3) and the middle ring (2) are all made of plastic material
  • the casing (1) is formed with an accommodating cavity (11), and the middle ring ( 2) Set in the accommodation cavity (11), the inner wall of the accommodation cavity (11) is provided with a number of guide protrusions (12), and the outer wall of the middle ring (2) corresponds to the two sides of the guide protrusions (12)
  • a positioning protrusion (21) is formed at the position, and an insertion slot is formed between the two positioning protrusions (21), and the insertion slot is mated with the guide
  • buckles (14) are also arranged on the top, and the buckles (14) are respectively set corresponding to 0°, 90°, 180° and 270° positions, and the outer wall of the middle circle (2) is provided with buckles (14) correspondingly.
  • block (22) the buckle (14) is fastened on the block (22) to form the fixation between the middle ring (2) and the case (1).
  • the beneficial effect of this setting is: the overall structure is relatively compact, and the purpose of saving space is realized; during installation, only the cage (4) and balls (41) are installed on the middle ring (2), and then the inner ring (3) Socketed with the middle ring (2), the rotation connection of the two can be realized, and then according to the cooperation of the guide protrusion (12) and the insertion groove, the middle ring (2) is put into the housing (1) accommodating cavity In (11), during this process, the clamping block (22) and the buckle (14) are clamped to realize the fixing of the middle ring (2) on the casing (1), so that the assembly is simple and the assembly process is realized.
  • the entire bearing is made of plastic except for the ball (41), which realizes the lightweight of parts; since the whole bearing is mostly made of plastic, it can be self-lubricated without too much lubricating oil, which realizes cost saving and reduction Harm to environmental pollution; plastic materials can be processed by injection molding with high processing efficiency and can completely replace grinding processing. At the same time, this structure is simple, which is conducive to realization and improves the installation efficiency of the overall structure.
  • the buckle (14) is provided with a bump (15) on the side facing the block (22), and the contact surface between the bump (15) and the block (22) is an inclined plane
  • the contact surface between the clamping block (22) and the outer edge of the accommodating cavity (11) is set on an inclined plane.
  • positioning ribs (13) are also provided on both sides of the inner wall of the accommodating cavity (11) corresponding to the positioning protrusions (21), and the positioning ribs (13) and the positioning protrusions (21 ) are all wedge-shaped, and the positioning convex ribs (13) are fitted to the outer wall of the positioning protrusion (21).
  • a positioning flange (17) is provided on the bottom surface of the accommodating cavity (11), and a dust-proof groove (17) is provided on the end surface of the inner ring (3) corresponding to the position of the positioning flange (17). 32), the positioning flange (17) is clamped and set in the dust-proof groove (32). Further, the positioning flange (17) is in clearance fit with the dustproof groove (32).
  • the beneficial effect of such setting is: setting in this way, a labyrinth structure is formed through the combination of the dust-proof groove (32) and the positioning flange (17), ensuring that foreign matter will not fall into the inside of the bearing, improving the use stability of the overall structure, and at the same time the structure It is simple, easy to implement, and effectively reduces the weight of the overall structure to meet the needs of lightweight use.
  • the positioning flange (17) and the dust-proof groove (32) are closely matched, making it easier for the positioning flange (17) to fall into the anti-dust groove. Dust tank (32), the installation is smoother and more convenient.
  • the inner diameter surface of the inner ring (3) is configured as a profiled surface.
  • the beneficial effect of such setting is: such setting can make the press-in force of the shaft not too large, ensure the stability and use effect of the overall structure, and at the same time, the structure is simple and the processing is very convenient.
  • the second embodiment of the plastic bearing for the steering column of the present invention is shown in Figures 1 to 3: it includes a casing (1), an inner ring (3) and a middle ring (2), and the middle ring (2) is sleeved Outside the inner ring (3), a cage (4) and balls (41) are arranged between the middle ring (2) and the inner ring (3), and the balls (41) are rotatably arranged on the cage (4)
  • the casing (1), the inner ring (3) and the middle ring (2) are all made of plastic material
  • the casing (1) is formed with an accommodating cavity (11), and the middle ring ( 2) Set in the accommodation cavity (11), the inner wall of the accommodation cavity (11) is provided with a number of guide protrusions (12), and the outer wall of the middle ring (2) corresponds to the two sides of the guide protrusions (12)
  • a positioning protrusion (21) is formed at the position, and an insertion slot is formed between the two positioning protrusions (21), and the insertion slot is mated with the guide
  • buckles (14) there are also three buckles (14) on the top, the buckles (14) are respectively set at positions corresponding to 0°, 120° and 240°, and the outer wall of the middle ring (2) is provided with a block (22) corresponding to the buckle (14). , the buckle (14) is buckled on the block (22) to form the fixation between the middle ring (2) and the casing (1).
  • the beneficial effect of this setting is: the overall structure is relatively compact, and the purpose of saving space is realized; during installation, only the cage (4) and balls (41) are installed on the middle ring (2), and then the inner ring (3) Socketed with the middle ring (2), the rotation connection of the two can be realized, and then according to the cooperation of the guide protrusion (12) and the insertion groove, the middle ring (2) is put into the housing (1) accommodating cavity In (11), during this process, the clamping block (22) and the buckle (14) are clamped to realize the fixing of the middle ring (2) on the casing (1), so that the assembly is simple and the assembly process is realized.
  • the entire bearing is made of plastic except for the ball (41), which realizes the lightweight of parts; since the whole bearing is mostly made of plastic, it can be self-lubricated without too much lubricating oil, which realizes cost saving and reduction Harm to environmental pollution; plastic materials can be processed by injection molding with high processing efficiency and can completely replace grinding processing. At the same time, this structure is simple, which is conducive to realization and improves the installation efficiency of the overall structure.
  • the buckle (14) is provided with a bump (15) on the side facing the block (22), and the contact surface between the bump (15) and the block (22) is an inclined plane
  • the contact surface between the clamping block (22) and the outer edge of the accommodating cavity (11) is set on an inclined plane.
  • positioning ribs (13) are also provided on both sides of the inner wall of the accommodating cavity (11) corresponding to the positioning protrusions (21), and the positioning ribs (13) and the positioning protrusions (21 ) are all wedge-shaped, and the positioning convex ribs (13) are fitted to the outer wall of the positioning protrusion (21).
  • a positioning flange (17) is provided on the bottom surface of the accommodating cavity (11), and a dust-proof groove (17) is provided on the end surface of the inner ring (3) corresponding to the position of the positioning flange (17). 32), the positioning flange (17) is clamped and set in the dust-proof groove (32). Further, the positioning flange (17) is in clearance fit with the dustproof groove (32).
  • the beneficial effect of such setting is: setting in this way, a labyrinth structure is formed through the combination of the dust-proof groove (32) and the positioning flange (17), ensuring that foreign matter will not fall into the inside of the bearing, improving the use stability of the overall structure, and at the same time the structure It is simple, easy to implement, and effectively reduces the weight of the overall structure to meet the needs of lightweight use.
  • the positioning flange (17) and the dust-proof groove (32) are closely matched, making it easier for the positioning flange (17) to fall into the anti-dust groove. Dust tank (32), the installation is smoother and more convenient.
  • the inner diameter surface of the inner ring (3) is configured as a profiled surface.
  • the beneficial effect of such setting is: such setting can make the press-in force of the shaft not too large, ensure the stability and use effect of the overall structure, and at the same time, the structure is simple and the processing is very convenient.
  • the third embodiment of the plastic bearing for the steering column of the present invention is shown in Figures 1 to 3: it includes a casing (1), an inner ring (3) and a middle ring (2), and the middle ring (2) is sleeved Outside the inner ring (3), a cage (4) and balls (41) are arranged between the middle ring (2) and the inner ring (3), and the balls (41) are rotatably arranged on the cage (4)
  • the casing (1), the inner ring (3) and the middle ring (2) are all made of plastic material
  • the casing (1) is formed with an accommodating cavity (11), and the middle ring ( 2) Set in the accommodating cavity (11), the inner wall of the accommodating cavity (11) is provided with guide protrusions (12), and the outer wall of the middle ring (2) corresponds to the positions on both sides of the guide protrusions (12)
  • Positioning protrusions (21) are formed, and an insertion groove is formed between the two positioning protrusions (21), the insertion groove is mated with the guide protrusion (12),
  • the beneficial effect of this setting is: the overall structure is relatively compact, and the purpose of saving space is realized; during installation, only the cage (4) and balls (41) are installed on the middle ring (2), and then the inner ring (3) Socketed with the middle ring (2), the rotation connection of the two can be realized, and then according to the cooperation of the guide protrusion (12) and the insertion groove, the middle ring (2) is put into the housing (1) accommodating cavity In (11), during this process, the clamping block (22) and the buckle (14) are clamped to realize the fixing of the middle ring (2) on the casing (1), so that the assembly is simple and the assembly process is realized.
  • the entire bearing is made of plastic except for the ball (41), which realizes the lightweight of parts; since the whole bearing is mostly made of plastic, it can be self-lubricated without too much lubricating oil, which realizes cost saving and reduction Harm to environmental pollution; plastic materials can be processed by injection molding with high processing efficiency and can completely replace grinding processing. At the same time, this structure is simple, which is conducive to realization and improves the installation efficiency of the overall structure.
  • the buckle (14) is provided with a bump (15) on the side facing the block (22), and the contact surface between the bump (15) and the block (22) is an inclined plane
  • the contact surface between the clamping block (22) and the outer edge of the accommodating cavity (11) is set on an inclined plane.
  • positioning ribs (13) are also provided on both sides of the inner wall of the accommodating cavity (11) corresponding to the positioning protrusions (21), and the positioning ribs (13) and the positioning protrusions (21 ) are all wedge-shaped, and the positioning convex ribs (13) are fitted to the outer wall of the positioning protrusion (21).
  • a positioning flange (17) is provided on the bottom surface of the accommodating cavity (11), and a dust-proof groove (17) is provided on the end surface of the inner ring (3) corresponding to the position of the positioning flange (17). 32), the positioning flange (17) is clamped and set in the dust-proof groove (32). Further, the positioning flange (17) is in clearance fit with the dustproof groove (32).
  • the beneficial effect of such setting is: setting in this way, a labyrinth structure is formed through the combination of the dust-proof groove (32) and the positioning flange (17), ensuring that foreign matter will not fall into the inside of the bearing, improving the use stability of the overall structure, and at the same time the structure It is simple, easy to implement, and effectively reduces the weight of the overall structure to meet the needs of lightweight use.
  • the positioning flange (17) and the dust-proof groove (32) are closely matched, making it easier for the positioning flange (17) to fall into the anti-dust groove. Dust tank (32), the installation is smoother and more convenient.
  • the inner diameter surface of the inner ring (3) is configured as a profiled surface.
  • the beneficial effect of such setting is: such setting can make the press-in force of the shaft not too large, ensure the stability and use effect of the overall structure, and at the same time, the structure is simple and the processing is very convenient.

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Abstract

一种转向管柱用塑料轴承，包括罩壳（1）、内圈（3）和中圈（2），中圈（2）套设在内圈（3）外，中圈（2）与内圈（3）之间设置有保持架（4）和滚珠（41），滚珠（41）转动设置在保持架（4）上，罩壳（1）、内圈（3）和中圈（2）均采用塑料材质制成，罩壳（1）上形成有容置腔（11），中圈（2）设置在容置腔（11）中，容置腔（11）内壁上设置有若干导向凸起（12），中圈（2）外壁上对应导向凸起（12）两侧位置形成有定位凸起（21），两定位凸起（21）之间形成有插接槽，插接槽与导向凸起（12）插接配合，容置腔（11）内壁上还设置有若干卡扣（14），中圈（2）外壁对应卡扣（14）设置有卡块（22），卡扣（14）扣设在卡块（22）上形成中圈（2）与罩壳（1）的固定。

Description

转向管柱用塑料轴承 技术领域
本发明涉及轴承技术领域，尤其是一种转向管柱用塑料轴承。
背景技术
现有常用汽车转向管柱的轴承为普通球轴承，此类轴承以薄壁系列轴承为主，目前的汽车转向管柱轴承在工作时，其转速较低，一般在100rpm左右，其承载能力要求也不高，其在工作环境中受到的轴向和径向载荷兼有，其工作环境温度不高，一般在零下40℃至80℃之间，随着现在汽车行业的发展，对轴承的使用要求也越来越特殊，例如轻量化的轴承、自润滑的轴承、具有调心功能的轴承等等，目前的普通球轴承不能很好的满足轻量化自润滑等功能，同时装配也不够便捷，不利于提高整体结构的使用效果和使用效率。
发明内容
针对现有技术的不足，本发明提供了一种转向管柱用塑料轴承，其整体结构更为紧凑，同时结构简单利于实现，装配也十分便捷。
为实现上述目的，本发明提供了一种转向管柱用塑料轴承，包括罩壳(1)、内圈(3)和中圈(2)，所述中圈(2)套设在内圈(3)外，所述中圈(2)与内圈(3)之间设置有保持架(4)和滚珠(41)，所述滚珠(41)转动设置在保持架(4)上，所述罩壳(1)、内圈(3)和中圈(2)均采用塑料材质制成，所述罩壳(1)上形成有容置腔(11)，所述中圈(2)设置在容置腔(11)中，所述容置腔(11)内壁上设置有若干导向凸起(12)，所述中圈(2)外壁上对应导向凸起(12)两侧位置形成有定位凸起(21)，两定位凸起(21)之间形成有插接槽，所述插接槽与导向凸起(12)插接配合，所述容置腔(11)内壁上还设置有若干卡扣(14)，所述中圈(2)外壁对应卡扣(14)设置有卡块(22)，所述卡扣(14)扣设在卡块(22)上形成中圈(2)与罩壳(1)的固定。
这样设置的有益效果是：整体结构较为紧凑，实现了节省空间的 目的；安装时只需在中圈(2)上安装好保持架(4)和滚珠(41)，再将内圈(3)与中圈(2)相套接，即可实现两者的转动连接，再根据导向凸起(12)与插接槽的配合，将中圈(2)置入罩壳(1)容置腔(11)中，在此过程中卡块(22)与卡扣(14)卡接，实现中圈(2)在罩壳(1)上的固定，这样装配简单，实现了总成装配工序的简化；同时整体除了滚珠(41)之外采用塑料材质，实现了零部件的轻量化；整个轴承由于大多有塑料制成，无需过多的润滑油，即可自润滑，实现了节约成本，减少对环境污染的危害；塑料材料可以通过注塑加工，加工效率高，可以完全代替磨加工，同时这种结构简单，利于实现，提高整体结构的安装效率。
作为本发明的进一步设置，所述卡扣(14)朝向卡块(22)的一侧设置有凸块(15).
作为本发明的进一步设置，所述凸块(15)与卡块(22)的接触面呈斜面设置，所述卡块(22)与容置腔(11)外缘的接触面呈斜面设置。
这样设置的有益效果是：这样设置使得卡块(22)与卡扣(14)的卡接动作更为顺畅，提高装配效率。
作为本发明的进一步设置，所述容置腔(11)内壁对应定位凸起(21)两侧还设置有定位凸筋(13)。
作为本发明的进一步设置，所述定位凸筋(13)和定位凸起(21)均呈楔形设置。
作为本发明的进一步设置，所述定位凸筋(13)与定位凸起(21)外壁相贴合设置。
这样设置的有益效果是：可以起到更好的导向安装效果，同时结构简单，稳定性高。
作为本发明的进一步设置，所述容置腔(11)底面上设置有定位凸缘(17)，所述内圈(3)端面上对应定位凸缘(17)位置设置有防尘槽(32)，所述定位凸缘(17)卡设在防尘槽(32)中设置。
作为本发明的进一步设置，所述定位凸缘(17)与防尘槽(32)间隙配合。
这样设置的有益效果是：这样设置，通过防尘槽(32)和定位凸缘(17)两者组合形成迷宫结构，保证异物不会掉入轴承内部，提高整体结构的使用稳定性，同时结构简单，利于实现，并且有效减少了整体结构的重量，满足轻量化的使用需求，同时定位凸缘(17)与防尘槽(32)间隙配合，使得定位凸缘(17)更容易落入防尘槽(32)，安装更加顺利便捷。
作为本发明的进一步设置，所述罩壳(1)外壁上沿周向设置有若干装配凸筋(16)，所述罩壳(1)外壁上还设置有用于装配导向的导向凸筋。
这样设置的有益效果是：通过装配凸筋(16)可以保证和壳体的压入力不会太大，同时结构较为简单，利于实现，便于生产加工。
作为本发明的进一步设置，所述内圈(3)内径面呈异形面设置。
这样设置的有益效果是：这样设置，可以使得轴的压入力不会太大，保证整体结构的稳定性和使用效果，同时结构简单，加工也十分便捷。
附图说明
图1为本发明实施例的结构示意图；
图2为本发明实施例的爆炸结构示意图；
图3为本发明实施例的剖面结构示意图。
具体实施方式
本发明转向管柱用塑料轴承的第一个实施例如图1至图3所示：包括罩壳(1)、内圈(3)和中圈(2)，所述中圈(2)套设在内圈(3)外，所述中圈(2)与内圈(3)之间设置有保持架(4)和滚珠(41)，所述滚珠(41)转动设置在保持架(4)上，所述罩壳(1)、内圈(3)和中圈(2)均采用塑料材质制成，所述罩壳(1)上形成有容置腔(11)，所述中圈(2)设置在容置腔(11)中，所述容置腔(11)内壁上设置有若干导向凸起(12)，所述中圈(2)外壁上对应导向凸起(12)两侧位置形成有定位凸起(21)，两定位凸起(21)之间形成有插接槽，所述插接槽与导向凸起(12)插接配合，所述容置腔(11)内壁上还设置有四个卡扣(14)，卡扣(14)分别对应0°、 90°、180°和270°位置设置，所述中圈(2)外壁对应卡扣(14)设置有卡块(22)，所述卡扣(14)扣设在卡块(22)上形成中圈(2)与罩壳(1)的固定。这样设置的有益效果是：整体结构较为紧凑，实现了节省空间的目的；安装时只需在中圈(2)上安装好保持架(4)和滚珠(41)，再将内圈(3)与中圈(2)相套接，即可实现两者的转动连接，再根据导向凸起(12)与插接槽的配合，将中圈(2)置入罩壳(1)容置腔(11)中，在此过程中卡块(22)与卡扣(14)卡接，实现中圈(2)在罩壳(1)上的固定，这样装配简单，实现了总成装配工序的简化；同时整体除了滚珠(41)之外采用塑料材质，实现了零部件的轻量化；整个轴承由于大多有塑料制成，无需过多的润滑油，即可自润滑，实现了节约成本，减少对环境污染的危害；塑料材料可以通过注塑加工，加工效率高，可以完全代替磨加工，同时这种结构简单，利于实现，提高整体结构的安装效率。
作为本实施方式的进一步设置，所述卡扣(14)朝向卡块(22)的一侧设置有凸块(15)，所述凸块(15)与卡块(22)的接触面呈斜面设置，所述卡块(22)与容置腔(11)外缘的接触面呈斜面设置。这样设置的有益效果是：这样设置使得卡块(22)与卡扣(14)的卡接动作更为顺畅，提高装配效率。
作为本实施方式的进一步设置，所述容置腔(11)内壁对应定位凸起(21)两侧还设置有定位凸筋(13)，所述定位凸筋(13)和定位凸起(21)均呈楔形设置，所述定位凸筋(13)与定位凸起(21)外壁相贴合设置。这样设置的有益效果是：可以起到更好的导向安装效果，同时结构简单，稳定性高。
作为本实施方式的进一步设置，所述容置腔(11)底面上设置有定位凸缘(17)，所述内圈(3)端面上对应定位凸缘(17)位置设置有防尘槽(32)，所述定位凸缘(17)卡设在防尘槽(32)中设置。进一步的，所述定位凸缘(17)与防尘槽(32)间隙配合。这样设置的有益效果是：这样设置，通过防尘槽(32)和定位凸缘(17)两者组合形成迷宫结构，保证异物不会掉入轴承内部，提高整体结构的使用稳定性，同时结构简单，利于实现，并且有效减少了整体结构的重 量，满足轻量化的使用需求，同时定位凸缘(17)与防尘槽(32)间隙配合，使得定位凸缘(17)更容易落入防尘槽(32)，安装更加顺利便捷。
作为本实施方式的进一步设置，所述罩壳(1)外壁上沿周向设置有若干装配凸筋(16)，所述罩壳(1)外壁上还设置有用于装配导向的导向凸筋。这样设置的有益效果是：通过装配凸筋(16)可以保证和壳体的压入力不会太大，同时结构较为简单，利于实现，便于生产加工。
作为本实施方式的进一步设置，所述内圈(3)内径面呈异形面设置。这样设置的有益效果是：这样设置，可以使得轴的压入力不会太大，保证整体结构的稳定性和使用效果，同时结构简单，加工也十分便捷。
本发明转向管柱用塑料轴承的第二个实施例如图1至图3所示：包括罩壳(1)、内圈(3)和中圈(2)，所述中圈(2)套设在内圈(3)外，所述中圈(2)与内圈(3)之间设置有保持架(4)和滚珠(41)，所述滚珠(41)转动设置在保持架(4)上，所述罩壳(1)、内圈(3)和中圈(2)均采用塑料材质制成，所述罩壳(1)上形成有容置腔(11)，所述中圈(2)设置在容置腔(11)中，所述容置腔(11)内壁上设置有若干导向凸起(12)，所述中圈(2)外壁上对应导向凸起(12)两侧位置形成有定位凸起(21)，两定位凸起(21)之间形成有插接槽，所述插接槽与导向凸起(12)插接配合，所述容置腔(11)内壁上还设置有三个卡扣(14)，卡扣(14)分别对应0°、120°和240°位置设置，所述中圈(2)外壁对应卡扣(14)设置有卡块(22)，所述卡扣(14)扣设在卡块(22)上形成中圈(2)与罩壳(1)的固定。这样设置的有益效果是：整体结构较为紧凑，实现了节省空间的目的；安装时只需在中圈(2)上安装好保持架(4)和滚珠(41)，再将内圈(3)与中圈(2)相套接，即可实现两者的转动连接，再根据导向凸起(12)与插接槽的配合，将中圈(2)置入罩壳(1)容置腔(11)中，在此过程中卡块(22)与卡扣(14)卡接，实现中圈(2)在罩壳(1)上的固定，这样装配简单，实现了 总成装配工序的简化；同时整体除了滚珠(41)之外采用塑料材质，实现了零部件的轻量化；整个轴承由于大多有塑料制成，无需过多的润滑油，即可自润滑，实现了节约成本，减少对环境污染的危害；塑料材料可以通过注塑加工，加工效率高，可以完全代替磨加工，同时这种结构简单，利于实现，提高整体结构的安装效率。
作为本实施方式的进一步设置，所述卡扣(14)朝向卡块(22)的一侧设置有凸块(15)，所述凸块(15)与卡块(22)的接触面呈斜面设置，所述卡块(22)与容置腔(11)外缘的接触面呈斜面设置。这样设置的有益效果是：这样设置使得卡块(22)与卡扣(14)的卡接动作更为顺畅，提高装配效率。
作为本实施方式的进一步设置，所述容置腔(11)内壁对应定位凸起(21)两侧还设置有定位凸筋(13)，所述定位凸筋(13)和定位凸起(21)均呈楔形设置，所述定位凸筋(13)与定位凸起(21)外壁相贴合设置。这样设置的有益效果是：可以起到更好的导向安装效果，同时结构简单，稳定性高。
作为本实施方式的进一步设置，所述容置腔(11)底面上设置有定位凸缘(17)，所述内圈(3)端面上对应定位凸缘(17)位置设置有防尘槽(32)，所述定位凸缘(17)卡设在防尘槽(32)中设置。进一步的，所述定位凸缘(17)与防尘槽(32)间隙配合。这样设置的有益效果是：这样设置，通过防尘槽(32)和定位凸缘(17)两者组合形成迷宫结构，保证异物不会掉入轴承内部，提高整体结构的使用稳定性，同时结构简单，利于实现，并且有效减少了整体结构的重量，满足轻量化的使用需求，同时定位凸缘(17)与防尘槽(32)间隙配合，使得定位凸缘(17)更容易落入防尘槽(32)，安装更加顺利便捷。
作为本实施方式的进一步设置，所述罩壳(1)外壁上沿周向设置有若干装配凸筋(16)，所述罩壳(1)外壁上还设置有用于装配导向的导向凸筋。这样设置的有益效果是：通过装配凸筋(16)可以保证和壳体的压入力不会太大，同时结构较为简单，利于实现，便于生产加工。
作为本实施方式的进一步设置，所述内圈(3)内径面呈异形面设置。这样设置的有益效果是：这样设置，可以使得轴的压入力不会太大，保证整体结构的稳定性和使用效果，同时结构简单，加工也十分便捷。
本发明转向管柱用塑料轴承的第三个实施例如图1至图3所示：包括罩壳(1)、内圈(3)和中圈(2)，所述中圈(2)套设在内圈(3)外，所述中圈(2)与内圈(3)之间设置有保持架(4)和滚珠(41)，所述滚珠(41)转动设置在保持架(4)上，所述罩壳(1)、内圈(3)和中圈(2)均采用塑料材质制成，所述罩壳(1)上形成有容置腔(11)，所述中圈(2)设置在容置腔(11)中，所述容置腔(11)内壁上设置有导向凸起(12)，所述中圈(2)外壁上对应导向凸起(12)两侧位置形成有定位凸起(21)，两定位凸起(21)之间形成有插接槽，所述插接槽与导向凸起(12)插接配合，所述容置腔(11)内壁上还设置有四个卡扣(14)，卡扣(14)分别对应0°、90°、180°和270°位置设置，所述导向凸起(12)对应设置在卡扣(14)两侧，所述中圈(2)外壁对应卡扣(14)设置有卡块(22)，所述卡扣(14)扣设在卡块(22)上形成中圈(2)与罩壳(1)的固定。这样设置的有益效果是：整体结构较为紧凑，实现了节省空间的目的；安装时只需在中圈(2)上安装好保持架(4)和滚珠(41)，再将内圈(3)与中圈(2)相套接，即可实现两者的转动连接，再根据导向凸起(12)与插接槽的配合，将中圈(2)置入罩壳(1)容置腔(11)中，在此过程中卡块(22)与卡扣(14)卡接，实现中圈(2)在罩壳(1)上的固定，这样装配简单，实现了总成装配工序的简化；同时整体除了滚珠(41)之外采用塑料材质，实现了零部件的轻量化；整个轴承由于大多有塑料制成，无需过多的润滑油，即可自润滑，实现了节约成本，减少对环境污染的危害；塑料材料可以通过注塑加工，加工效率高，可以完全代替磨加工，同时这种结构简单，利于实现，提高整体结构的安装效率。
作为本实施方式的进一步设置，所述卡扣(14)朝向卡块(22)的一侧设置有凸块(15)，所述凸块(15)与卡块(22)的接触面呈 斜面设置，所述卡块(22)与容置腔(11)外缘的接触面呈斜面设置。这样设置的有益效果是：这样设置使得卡块(22)与卡扣(14)的卡接动作更为顺畅，提高装配效率。
作为本实施方式的进一步设置，所述容置腔(11)内壁对应定位凸起(21)两侧还设置有定位凸筋(13)，所述定位凸筋(13)和定位凸起(21)均呈楔形设置，所述定位凸筋(13)与定位凸起(21)外壁相贴合设置。这样设置的有益效果是：可以起到更好的导向安装效果，同时结构简单，稳定性高。
作为本实施方式的进一步设置，所述容置腔(11)底面上设置有定位凸缘(17)，所述内圈(3)端面上对应定位凸缘(17)位置设置有防尘槽(32)，所述定位凸缘(17)卡设在防尘槽(32)中设置。进一步的，所述定位凸缘(17)与防尘槽(32)间隙配合。这样设置的有益效果是：这样设置，通过防尘槽(32)和定位凸缘(17)两者组合形成迷宫结构，保证异物不会掉入轴承内部，提高整体结构的使用稳定性，同时结构简单，利于实现，并且有效减少了整体结构的重量，满足轻量化的使用需求，同时定位凸缘(17)与防尘槽(32)间隙配合，使得定位凸缘(17)更容易落入防尘槽(32)，安装更加顺利便捷。
作为本实施方式的进一步设置，所述罩壳(1)外壁上沿周向设置有若干装配凸筋(16)，所述罩壳(1)外壁上还设置有用于装配导向的导向凸筋。这样设置的有益效果是：通过装配凸筋(16)可以保证和壳体的压入力不会太大，同时结构较为简单，利于实现，便于生产加工。
作为本实施方式的进一步设置，所述内圈(3)内径面呈异形面设置。这样设置的有益效果是：这样设置，可以使得轴的压入力不会太大，保证整体结构的稳定性和使用效果，同时结构简单，加工也十分便捷。
以上实例，只是本发明优选地具体实例的一种，本领域技术人员在本发明技术方案范围内进行的通常变化和替换都包含在本发明的保护范围内。

Claims (10)

  1. 一种转向管柱用塑料轴承，包括罩壳(1)、内圈(3)和中圈(2)，所述中圈(2)套设在内圈(3)外，所述中圈(2)与内圈(3)之间设置有保持架(4)和滚珠(41)，所述滚珠(41)转动设置在保持架(4)上，其特征在于：所述罩壳(1)、内圈(3)和中圈(2)均采用塑料材质制成，所述罩壳(1)上形成有容置腔(11)，所述中圈(2)设置在容置腔(11)中，所述容置腔(11)内壁上设置有若干导向凸起(12)，所述中圈(2)外壁上对应导向凸起(12)两侧位置形成有定位凸起(21)，两定位凸起(21)之间形成有插接槽，所述插接槽与导向凸起(12)插接配合，所述容置腔(11)内壁上还设置有若干卡扣(14)，所述中圈(2)外壁对应卡扣(14)设置有卡块(22)，所述卡扣(14)扣设在卡块(22)上形成中圈(2)与罩壳(1)的固定。
  2. 根据权利要求1所述的转向管柱用塑料轴承，其特征在于：所述卡扣(14)朝向卡块(22)的一侧设置有凸块(15)。
  3. 根据权利要求2所述的转向管柱用塑料轴承，其特征在于：所述凸块(15)与卡块(22)的接触面呈斜面设置，所述卡块(22)与容置腔(11)外缘的接触面呈斜面设置。
  4. 根据权利要求1或2或3所述的转向管柱用塑料轴承，其特征在于：所述容置腔(11)内壁对应定位凸起(21)两侧还设置有定位凸筋(13)。
  5. 根据权利要求4所述的转向管柱用塑料轴承，其特征在于：，所述定位凸筋(13)和定位凸起(21)均呈楔形设置。
  6. 根据权利要求5所述的转向管柱用塑料轴承，其特征在于：所述定位凸筋(13)与定位凸起(21)外壁相贴合设置。
  7. 根据权利要求6所述的转向管柱用塑料轴承，其特征在于：所述容置腔(11)底面上设置有定位凸缘(17)，所述内圈(3)端面上对应定位凸缘(17)位置设置有防尘槽(32)，所述定位凸缘(17)卡设在防尘槽(32)中设置。
  8. 根据权利要求7所述的转向管柱用塑料轴承，其特征在于：所述定位凸缘(17)与防尘槽(32)间隙配合。
  9. 根据权利要求1所述的转向管柱用塑料轴承，其特征在于：所述罩壳(1)外壁上沿周向设置有若干装配凸筋(16)，所述罩壳(1)外壁上还设置有用于装配导向的导向凸筋。
  10. 根据权利要求1所述的转向管柱用塑料轴承，其特征在于：所述内圈(3)内径面呈异形面设置。
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