CN203793407U - Rotary device - Google Patents
Rotary device Download PDFInfo
- Publication number
- CN203793407U CN203793407U CN201420055102.9U CN201420055102U CN203793407U CN 203793407 U CN203793407 U CN 203793407U CN 201420055102 U CN201420055102 U CN 201420055102U CN 203793407 U CN203793407 U CN 203793407U
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- Prior art keywords
- inner ring
- embedded
- contact
- nut
- periphery
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- Power Steering Mechanism (AREA)
Abstract
The utility model provides a rotary device. Two contact angles of two columns of inner rings and two columns of rolling balls of the rotary device are symmetric and identical in size. An angular contact ball bearing (30) is provided with an outer ring (31) embedded in the inner circumference of an outer shell (12a), the two columns of inner rings (32, 33) embedded in the periphery of a rotating body (50) and a plurality of rolling balls (34, 35) arranged between the outer ring and the two columns of inner rings in the circumferential direction. An embedded face (54) and a step face (53a) are arranged on the periphery of the rotating body, the embedded face (54) allows the two columns of inner rings to be embedded, and the step face (53a) extends in the outer diameter direction on one axial side of the embedded face and abuts against one end faces of the two columns of inner rings. A nut (65) comprises a circular ring body portion (65a) continuous in the circumferential direction, and a plurality of angular portions (65b) arranged on the periphery of the circular ring body portion in the circumferential direction. Concave portions which are not in contact with the other end face of the inner ring (32) are formed on the angular portions.
Description
Technical field
The utility model relates to the slewing arrangement that swivel can be supported on rotatably to shell via double-row angular contact bal bearing.
Background technology
As one of driven steering device, ball nut and driven pulley are disposed at coaxially to the periphery of rack shaft, electro-motor is configured to parallel with rack shaft, the rotation of the output shaft of electro-motor is delivered to driven pulley, and the rotation of driven pulley is converted to moving axially of rack shaft via ball nut, ball, ball-screw via driving pulley, band.
Driven steering device is for swivel bearing ball nut and driven pulley and adopt slewing arrangement.
Slewing arrangement comprises: shell; Be embedded in the double-row angular contact bal bearing in the interior week of this shell; And be embedded in the interior week of this double-row angular contact bal bearing and there is ball-screw and the swivel of driven pulley.Double-row angular contact bal bearing possesses: the outer ring that is embedded in the interior week of shell; Be embedded in the biserial inner ring of the periphery of swivel; And between outer ring and biserial inner ring, along the circumferential direction dispose multiple and be configured to vertically the ball of biserial.
Swivel comprises: rotating main body parts, be integrally formed ball nut, and be formed with chimeric surface in periphery, and be distolaterally formed with the flange part outstanding along external diameter direction at one of chimeric surface, at another distolateral external thread part that is formed with; And driven pulley, it is embedded in chimeric surface and is combined on external thread part.
Have biserial inner ring chimeric surface is chimeric, and biserial inner ring is clamped vertically by flange part and driven pulley.
Utility model content
The maximum outside diameter that the maximum outside diameter contacting with flange part due to biserial inner ring contacts with driven pulley than biserial inner ring is large, and therefore, the inner ring of flange part side and the angle of contact of ball are larger than the angle of contact of the inner ring of driven pulley and ball.As a result, while causing the sensation while switching handle to the right and switch handle to the left, feel one of different reason.The utility model completes in order to address the above problem, and therefore its objective is and provides two angle of contacts of biserial inner ring and biserial ball to be mutually symmetrical and big or small identical slewing arrangement.
Technical scheme 1 is characterised in that: slewing arrangement possesses: shell; Double-row angular contact bal bearing, it is embedded in the interior week of above-mentioned shell; Swivel, it is embedded in the interior week of above-mentioned double-row angular contact bal bearing, is formed with belt wheel portion across above-mentioned double-row angular contact bal bearing at axial opposite side, is formed with external thread part in a side; And nut, it is combined on above-mentioned external thread part, and above-mentioned double-row angular contact bal bearing possesses: the outer ring that is embedded in the interior week of above-mentioned shell; Be embedded in the biserial inner ring of the periphery of above-mentioned swivel; And along the circumferential direction dispose multiple balls between above-mentioned outer ring and above-mentioned biserial inner ring, and have in the periphery of above-mentioned swivel: chimeric surface, it is chimeric for above-mentioned biserial inner ring; And step surface, its axial opposite side at above-mentioned chimeric surface extends along external diameter direction, and with the other end butt of above-mentioned biserial inner ring, above-mentioned nut comprises: continuous annular body portion in a circumferential direction; And be provided with multiple bights in the periphery compartment of terrain spaced apart in the circumferential direction of above-mentioned annular body portion, be formed with in above-mentioned bight not and the recess (ぬ The body) of an end contact of above-mentioned biserial inner ring, the second contact maximum outside diameter that the other end of above-mentioned biserial inner ring contacts with above-mentioned step surface and an end face of above-mentioned biserial inner ring contact with the annular body portion of above-mentioned nut first to contact maximum outside diameter equal.
According to the utility model, can provide the slewing arrangement that two angle of contacts are mutually symmetrical and size is identical of a kind of biserial inner ring and biserial ball.
Brief description of the drawings
Fig. 1 is the local amplification view of the related driven steering device of an embodiment of the present utility model.
Fig. 2 is the cutaway view of the related A-A line along Fig. 1 of an embodiment of the present utility model.
Fig. 3 is the local amplification view of the related Fig. 1 of an embodiment of the present utility model.
Description of reference numerals
12... rack housing (shell); 12g... the 5th chimeric surface; 20... be with wheel mechanism; 22... driving pulley; 25... band; 31... outer ring; 32... inner ring; 33... inner ring; 34... ball; 35... ball; 40... ball screw framework; 41... rack shaft; 42... ball-screw; 45... ball nut; 43... ball; 30... double-row angular contact bal bearing; 50... rotating main body parts (swivel); 52... driven pulley (belt wheel portion); 53a... First terrace (step surface); 54... the 3rd chimeric surface; 65... the first nut (nut); 65a... annular body portion; 65b... bight.
Detailed description of the invention
With reference to Fig. 1～Fig. 3, an embodiment of the present utility model is described.
As shown in Figure 1, driven steering device has: rack-and pinion gear mechanism, and its rotation by not shown pinion shaft is converted to the axial movement of rack shaft 41; Electro-motor 60, it is configured to parallel with rack shaft 41; Band wheel mechanism 20, it transmits the rotation of electro-motor 60; Ball screw framework 40, it will be converted to the axial movement of rack shaft 41 by the rotation of transmitting with wheel mechanism 20.
Handle links with one end rotation of not shown pinion shaft via not shown steering shaft.Pilot wheel links with the two ends of rack shaft 41 via not shown ball and cocket joint.
Band wheel mechanism 20 has: the driving pulley 22 that is installed on the output shaft of electro-motor 60; Be configured to the driven pulley 52 coaxial with rack shaft 41; And be scaffolding in driving pulley 22 and driven pulley 52 be with 25.There is the function of the rotation of electro-motor 60 being slowed down and being delivered to driven pulley 52 with wheel mechanism 20.
Driven pulley 52 is formed at the other end periphery of rotating main body parts 50, and driving pulley 22 and driven pulley 52 have multiple external tooths, at the internal tooth engaging with external tooth that is formed with in interior week with 25.
Be with 25 for rubber system, there is the annular heart yearn of multiple glass fibre systems in the inside of rubber system.Not shown heart yearn is equally spaced arranged on the axis direction of driven pulley 52.
In the periphery of rotating main body parts 50, from the other end to one end, be formed with successively as shown in Figure 1 and Figure 3: the first chimeric surface 51 that diameter is less than the diameter of driven pulley 52; Driven pulley 52; The second chimeric surface 53 that diameter is less than the diameter of driven pulley 52; The First terrace 53a extending towards internal diameter direction; The 3rd chimeric surface 54 that diameter is less than the diameter of the second chimeric surface 53; And external thread part 55, be formed with endless groove 56 in a part for external thread part 55.
Be pressed into chimeric discoid the first vibrating part 23 that has at the first chimeric surface 51, be pressed into chimeric the second vibrating part 24 cylindraceous that has at the second chimeric surface 53.The first vibrating part 23 and the second vibrating part 24 are more outstanding towards external diameter direction than driven pulley 52, and have with not in the axial function of the mode pilot tape 25 of skew significantly.
There is a double-row angular contact bal bearing 30 the 3rd chimeric surface 54 is chimeric, be combined with the first nut 65 at external thread part 55, in endless groove 56, embed back-up ring 66.The inner ring 32,33 of double-row angular contact bal bearing 30 is clamped in the axial direction by First terrace 53a and the first nut 65, prevents the loosening of the first nut 65 by back-up ring 66.Rotating main body parts 50 can be supported on rack housing 12 rotatably via double-row angular contact bal bearing 30.
As shown in FIG. 2 and 3, the first nut 65 comprises: at the continuous annular body portion 65a cylindraceous of circumferencial direction; And bight 65b, its periphery compartment of terrain spaced apart in the circumferential direction at this annular body portion 65a is provided with multiple.Can make not shown instrument engage on hand of rotation by multiple bight 65b.At the internal thread part screwing with external thread part 55 that is formed with in interior week of annular body portion 65a, be formed with outside diameter in the two sides of all bight 65b towards axial centroclinal dip plane 65c.Make the laterally inclined dip plane 65c obtaining of bight 65b by setting, between an end face of inner ring 32 and dip plane 65c, be provided with discontiguous recess each other.Because the maximum outside diameter of an end face of inner ring 32 is larger than the maximum outside diameter of annular body portion 65a, therefore the maximum outside diameter b of the other end of annular body portion 65a becomes the first contact maximum outside diameter that an end face of inner ring 32 contacts with the other end of annular body portion 65a.In addition an end contact of the whole and inner ring 32 of the other end of annular body portion 65a.
Because the maximum outside diameter of the other end of inner ring 33 is larger than the diameter of the second chimeric surface 53, therefore the maximum outside diameter d of First terrace 53a becomes the second contact maximum outside diameter that the other end of inner ring 33 contacts with First terrace 53a.In addition, the other end of the whole and inner ring 33 of First terrace 53a contacts.
The minimum outer diameter a of the other end of annular body portion 65a equates with the minimum outer diameter c of First terrace 53a.The maximum outside diameter b of the other end of annular body portion 65a equates with the maximum outside diameter d of First terrace 53a.The first contact maximum outside diameter that, an end face of inner ring 32 contacts with the other end of annular body portion 65a, the second contact maximum outside diameter contacting with First terrace 53a with the other end of inner ring 33 equate.
As shown in Figure 1, ball screw framework 40 has: the ball nut 45 that can be supported on rotatably rack housing 12 via double-row angular contact bal bearing 30; Be formed at the ball-screw 42 of the periphery of rack shaft 41; And Jie inserts in the ball 43 between ball nut 45 and ball-screw 42.Ball 43 is in one end of ball nut 45 all side shiftings inwardly, on ball-screw 42, roll, and at the other end of ball nut 45 towards periphery side shifting, distolateral the returning via not shown backward channel towards ball nut 45.Ball screw framework 40 has the function that the rotation of electro-motor 60 is converted to the axial movement of rack shaft 41.
Ball nut 45 is embedded in the 4th chimeric surface in the interior week of rotating main body parts 50 coaxially.The other end in interior week of rotating main body parts 50 is formed with internal thread part 57, is formed with the second step face 58 extending along internal diameter direction between internal thread part 57 and the 4th chimeric surface.Be combined with the second nut 67 at internal thread part 57.Form the flange part 46 extending along external diameter direction in the other end periphery of ball nut 45, flange part 46 is clamped in the axial direction by the second nut 67 and second step face 58.
Form the swivel described in technical scheme 1 by rotating main body parts 50 and driven pulley 52.
Double-row angular contact bal bearing 30 comprises: the outer ring 31 that is embedded in the 5th chimeric surface 12g in the interior week of second housing 12b; Be embedded in the biserial inner ring 32,33 of the 3rd chimeric surface 54 of the periphery of rotating main body parts 50; And between outer ring 31 and biserial inner ring 32,33, along the circumferential direction dispose multiple and be configured to vertically the ball 34,35 of biserial.
As shown in Figure 1 and Figure 3, be axially formed with double-row outer-ring side roller surface in the inner edge of outer ring 31, the first nut 65 sides are first outer ring side roller surfaces, and the second vibrating part 24 sides are second outer ring side roller surfaces.The sidewindering with the first outer ring the position that face is corresponding and be formed with the first inner ring side roller surface of interior week of inner ring 32, sidewindering with the second outer ring the position that face is corresponding and form the second inner ring side roller surface in interior week of inner ring 33.Ball 34 rolls on the first outer ring side roller surface and on the first inner ring side roller surface, and ball 35 rolls on the second outer ring side roller surface and on the second inner ring side roller surface.
The line segment that contact position that the contact position that ball 34 is contacted with the first outer ring side roller surface contacts with the first inner ring side roller surface with ball 34 links is by ball 34 center, and line segment and external diameter direction angulation are angle of contact α.The the first contact maximum outside diameter contacting with the other end of annular body portion 65a along with an end face of inner ring 32 increases, and angle of contact α has the tendency of increase.The line segment that contact position that the contact position that ball 35 is contacted with the second outer ring side roller surface contacts with the second inner ring side roller surface with ball 35 links is by ball 35 center, and line segment and external diameter direction angulation are angle of contact β.The the second contact maximum outside diameter contacting with First terrace 53a along with the other end of inner ring 33 increases, and angle of contact β has the tendency of increase.Equate because the first contact maximum outside diameter contacts maximum outside diameter with second, therefore angle of contact α is symmetrical with angle of contact β and have an identical size.
The inner ring 32,33 of double-row angular contact bal bearing 30 by First terrace 53a and the first nut 65 in axial clamping.The outer ring of double-row angular contact bal bearing 30 is embedded in the 5th chimeric surface 12g in the interior week of the first shell 12a, and by the step surface of the end face of the first shell 12a and second housing 12b described later in axial clamping.
Rack housing 12 is foundry goods system as shown in Figure 1.Rack housing 12 comprises the first shell 12a of electro-motor 60 sides and the second housing 12b of electro-motor 60 opposition sides, and the two is connected to each other via bolt 16.Be formed with the not shown inserting hole of inserting for bolt 16 at the first shell 12a, be formed with the not shown tapped bore screwing for bolt 16 at second housing 12b.The end face of the first shell 12a and second housing 12b connects airtight each other, in the chimeric part that has second housing 12b of periphery of the first shell 12a.By the first shell 12a and second housing 12b at formation motion space, inside 12h.Driving pulley 22 and driven pulley 52 rotate in the 12h of motion space, thereby are with 25 to move.
In being formed with from outside towards motion space 12h, inserts the first shell 12a the patchhole 12m of driving pulley 22.Be formed with the sighthole 12k that spies on motion space 12h from outside at second housing 12b.Patchhole 12m and sighthole 12k are along the axial perforation of rack shaft 41.Driving pulley 22 is hung on the hole of spying on 25 o'clock by sighthole 12k.Embed not shown cover in order to seal at sighthole 12k after driving pulley 22 is hung on 25.
Borrow group bolt 15 that electro-motor 60 is installed at second housing 12b.Be formed with the inserting hole 12d inserting for bolt 15 at second housing 12b, be formed with the not shown tapped bore screwing for bolt 15 at electro-motor 60.Inserting hole 12d is formed as along the long hole shape that approaches the direction extension separating with respect to rack shaft 41, thereby by making bolt 15 move the tension force that can adjust with 25 in the scope of slotted hole.
As shown in Figure 1 and Figure 3, dispose at axial tool the first liner 63 springy and at axial tool the second liner 64 springy in the axial both sides of double-row angular contact bal bearing 30, they are embedded in the 5th chimeric surface 12g in the interior week of the first shell 12a.The first liner 63, double-row angular contact bal bearing 30 and the second liner 64 by the step surface of the end face of the first shell 12a and second housing 12b in axial clamping.
Next based on above-mentioned formation, Assembly Action is described.
As shown in Figure 1, make ball nut 45 be combined on rack shaft 41 via ball 43, and the ball nut 45 that makes to be assembled with rack shaft 41 is embedded in the 4th chimeric surface in the interior week of rotating main body parts 50.Make the second nut 67 be combined on internal thread part 57, by the flange part of ball nut 45 46 by the second nut 67 and second step face 58 in axial clamping, and ball nut 45 is fixed on to rotating main body parts 50.Make biserial inner ring 32,33 be embedded in the 3rd chimeric surface 54 of the periphery of rotating main body parts 50, make other end and the First terrace 53a butt of inner ring 33.Make the first nut 65 be combined on external thread part 55, by biserial inner ring 32,33 by First terrace 53a and the second nut 67 in axial clamping.So, double-row angular contact bal bearing 30 is installed in rotating main body parts 50.Back-up ring 66 is embedded to endless groove 56, thereby prevent the loosening of the second nut 67.
Make the first liner 63 be embedded in the 5th chimeric surface 12g in the interior week of second housing 12b.Make the double-row angular contact bal bearing 30 of the assembly that is assembled with rack shaft 41, ball nut 45, rotating main body parts 50 be embedded in the first shell 12a, and make rack shaft 41 be inserted through the inserting hole 12c of second housing 12b.Make the second liner 64 be embedded in the 5th chimeric surface 12g in the interior week of the first shell 12a.To be with 25 to be hung at driven pulley 52.
Make a part of the first shell 12a be embedded in the interior week of second housing 12b, the end face of the first shell 12a and the end face of second housing 12b are connected airtight each other, by the first liner 63, double-row angular contact bal bearing 30 and the second liner 64 by the end face of the first shell 12a and the step surface of second housing 12b in axial clamping, under this state, the first shell 12a and second housing 12b are linked by bolt 16.
Driving pulley 22 is installed in the output shaft of electro-motor 60 in advance, by with the driving pulley 22 of electro-motor 60 one from patchhole 12m insert action space 12h, and driving pulley 22 is hung on and is with 25.Now, operator spies on motion space 12h from sighthole 12k, and confirmation driving pulley 22 has been put into the inner circumferential side with 25.
Bolt 15 is inserted through to inserting hole 12d and makes it be combined on electro-motor 60, under 15 the state of not exclusively tighting a bolt, along inserting hole 12d, driving pulley 22 and electro-motor 60 are moved towards the direction separating from driven pulley 52, apply power towards the direction separating.If apply power towards the direction separating, to being with 25 to apply tension force.If reach the tension force of regulation, under the state that maintains the power applying towards the direction separating, bolt 15 is tightened completely.Cover is embedded in to sighthole 12k chimeric and complete assembling.
Next the action of the driven steering device of as above assembling is described.
If operating handle, pinion shaft rotation, is converted to the rotation of pinion shaft by rack-and pinion gear mechanism the axial movement of rack shaft 41.Put on the handle moment of torsion of pinion shaft by not shown sensor senses, and will append to electro-motor 60 with the corresponding drive current of handle moment of torsion.
As shown in Figure 1, the rotation of the output shaft of electro-motor 60 via driving pulley 22, be with 25 and driven pulley 52 and be passed to ball nut 45.Be converted into the axial movement of rack shaft 41 by the rotation of ball screw framework 40 ball nuts 45.So, be applied to rack shaft 41 with the corresponding auxiliary power of handle moment of torsion.
The first contact maximum outside diameter of contacting with the other end of annular body portion 65a due to an end face of inner ring 32, contact with First terrace 53a with the other end of inner ring 33 second to contact maximum outside diameter equal, therefore angle of contact β that, the angle of contact α of ball 34 and the first outer ring side roller surface and the contact of the first inner ring side roller surface contacts with the second outer ring side roller surface and the second inner ring side roller surface with ball 35 is symmetrical and have an identical size.As a result, the sensation while switching handle to the right and feel identical while switching handle to the left.
The utility model is not limited to above-mentioned embodiment, in the scope that does not depart from purport of the present utility model, can implement in every way.
Above-mentioned embodiment, makes the laterally inclined dip plane 65c obtaining of bight 65b by setting, between an end face of inner ring 32 and dip plane 65c, be provided with discontiguous recess each other.As other embodiment, by making the side of bight 65b than the side-facing depressions of annular body portion 65a, discontiguous recess is each other set between an end face of inner ring 32 and the side of bight 65b.
Claims (1)
1. a slewing arrangement, is characterized in that:
Described slewing arrangement possesses: shell; Double-row angular contact bal bearing, it is embedded in the interior week of described shell; Swivel, it is embedded in the interior week of described double-row angular contact bal bearing, is formed with belt wheel portion across described double-row angular contact bal bearing at axial opposite side, is formed with external thread part in a side; And nut, it is combined on described external thread part,
Described double-row angular contact bal bearing possesses: the outer ring that is embedded in the interior week of described shell; Be embedded in the biserial inner ring of the periphery of described swivel; And along the circumferential direction dispose multiple balls between described outer ring and described biserial inner ring,
Periphery at described swivel has: chimeric surface, and it is chimeric for described biserial inner ring; And step surface, its axial opposite side at described chimeric surface extends along external diameter direction, and with the other end butt of described biserial inner ring,
Described nut comprises: continuous annular body portion in a circumferential direction; And be provided with multiple bights in the periphery compartment of terrain spaced apart in the circumferential direction of described annular body portion,
Be formed with in described bight not and the recess of an end contact of described biserial inner ring, the second contact maximum outside diameter that the other end of described biserial inner ring contacts with described step surface and an end face of described biserial inner ring contact with the annular body portion of described nut first to contact maximum outside diameter equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420055102.9U CN203793407U (en) | 2014-01-28 | 2014-01-28 | Rotary device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420055102.9U CN203793407U (en) | 2014-01-28 | 2014-01-28 | Rotary device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203793407U true CN203793407U (en) | 2014-08-27 |
Family
ID=51375651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420055102.9U Expired - Fee Related CN203793407U (en) | 2014-01-28 | 2014-01-28 | Rotary device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203793407U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104787110A (en) * | 2015-04-02 | 2015-07-22 | 常州机电职业技术学院 | Electric power steering box |
| CN106364547A (en) * | 2015-07-20 | 2017-02-01 | 株式会社万都 | Rack assist type power steering apparatus |
| CN109311507A (en) * | 2016-06-22 | 2019-02-05 | 蒂森克虏伯普利斯坦股份公司 | The ball-screw of electromechanical power steering system with one-piece corner connection touching ball bearing |
| CN109835412A (en) * | 2017-11-24 | 2019-06-04 | 株式会社捷太格特 | Transfer |
| US10913484B2 (en) | 2016-06-22 | 2021-02-09 | Thyssenkrupp Presta Ag | Ball screw drive of an electromechanical power steering device with deflecting bodies for a ball return |
-
2014
- 2014-01-28 CN CN201420055102.9U patent/CN203793407U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104787110A (en) * | 2015-04-02 | 2015-07-22 | 常州机电职业技术学院 | Electric power steering box |
| CN106364547A (en) * | 2015-07-20 | 2017-02-01 | 株式会社万都 | Rack assist type power steering apparatus |
| CN109311507A (en) * | 2016-06-22 | 2019-02-05 | 蒂森克虏伯普利斯坦股份公司 | The ball-screw of electromechanical power steering system with one-piece corner connection touching ball bearing |
| US10913484B2 (en) | 2016-06-22 | 2021-02-09 | Thyssenkrupp Presta Ag | Ball screw drive of an electromechanical power steering device with deflecting bodies for a ball return |
| CN109311507B (en) * | 2016-06-22 | 2022-03-29 | 蒂森克虏伯普利斯坦股份公司 | Ball screw for an electromechanical power steering system with an integrated angular contact ball bearing |
| CN109835412A (en) * | 2017-11-24 | 2019-06-04 | 株式会社捷太格特 | Transfer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140827 Termination date: 20150128 |
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| EXPY | Termination of patent right or utility model |