CN108860290A - The diverter of rocker compensating gear and the application rocker compensating gear - Google Patents
The diverter of rocker compensating gear and the application rocker compensating gear Download PDFInfo
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- CN108860290A CN108860290A CN201810431087.6A CN201810431087A CN108860290A CN 108860290 A CN108860290 A CN 108860290A CN 201810431087 A CN201810431087 A CN 201810431087A CN 108860290 A CN108860290 A CN 108860290A
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- 210000000452 mid-foot Anatomy 0.000 claims description 14
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 241000237858 Gastropoda Species 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 description 8
- 230000002159 abnormal effect Effects 0.000 description 5
- 238000003754 machining Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000001186 cumulative effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D3/00—Steering gears
- B62D3/02—Steering gears mechanical
- B62D3/04—Steering gears mechanical of worm type
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- Gears, Cams (AREA)
Abstract
The invention proposes the diverters of a kind of rocker compensating gear and the application rocker compensating gear, so that the teeth directional gap of worm and gear keeps within preset range, improving the manipulation comfort level of diverter, and reduce noise in diverter.The rocker compensating gear includes gap adjusting seat and end support base, and the middle part of gap adjusting seat is equipped with the first axis through-hole of perforation, and the outboard end of gap adjusting seat is equipped with arcwall outstanding；End support base is extend into arcwall by outboard end, arcwall is arranged with radial spring, two free ends of radial spring are fixed on arcwall, and medial surface and the end support base of radial spring offset, and end support base is pulled to the axis direction of first axis through-hole by the elastic force of radial spring；The middle part of end support base has the second axially extending bore；Gap adjusting seat is also rotatably mounted with central supporting seat, and central supporting seat and end support base are located at the two sides of gap adjusting seat, and the middle part of central supporting seat is equipped with third axially extending bore.
Description
Technical field
The present invention relates to passenger car steering system fields, and in particular to a kind of rocker compensating gear and applies the backlash compensation
The diverter of mechanism.
Background technique
With the development of automobile industry technology, requirement of the consumer to car comfort is stepped up, electric power steering
System gradually replaces hydraulic power-assist steering system, becomes the mainstream configuration of steering system.Steering system as with driver
Most close component is contacted, noise level directly affects driver and occupant's comfort.With electric power steering system
System is popularized, and consumer gradates the mechanical abnormal sound to electric boosting steering system to the concern of original hydraulic noise.Electricity
The major mechanical abnormal sound of dynamic steering column derives from turbine worm reducer structure, and turbine and worm decelerator teeth directional gap is electronic
One key characteristic of power-assisted steering tubular column design：Teeth directional gap is big, when steering mechanism commutates in situ and passes through uneven road surface
Noise is obvious；Teeth directional gap is small, and system friction resistance becomes larger, and the decline of deceleration mechanism endurance quality is serious, teeth directional gap after decline
Become larger, generates obvious noise.
The worm shaft of traditional electric steering column deceleration mechanism is rigidly connected by the bearing at both ends with deceleration mechanism shell
Connect, for guarantee worm and gear center away from and back lash, need to worm and gear assemble when according to respective size into
Row apolegamy assembling, reduces packaging efficiency, even and presence apolegamy rear worm wheel worm screw there is also rotations unloaded under limiting case
Torque exceeds scope of design.Along with the abrasion of worm gear mechanism, the two back lash is become larger, and vehicle passes through not level road
When driving, ground shock causes worm shaft to generate mobile or worm shaft in the axial direction and deviates the certain angle of axial direction in face
The noise and vibration generated when forming flexible deformation when spending causes driver and passenger's comfort to be deteriorated.Switching operation is turned in situ
When, because worm gear worm backlash increases, it is obvious to beat tooth sound, also will lead to driver and manipulates comfort level variation.
Summary of the invention
The purpose of the present invention is to propose to the diverters of a kind of rocker compensating gear and the application rocker compensating gear, so as to turn
Into device, the teeth directional gap of worm and gear keeps within preset range, improving the manipulation comfort level of diverter, and reduce noise.
Rocker compensating gear of the invention includes gap adjusting seat and end support base, is set in the middle part of the gap adjusting seat
There is the first axis through-hole of perforation, the outboard end of gap adjusting seat is equipped with arcwall outstanding；The end support base is by outside
End is extend into arcwall, and arcwall is arranged with radial spring, and two free ends of the radial spring are fixed on arcwall,
The medial surface of radial spring offsets with end support base, and end support base is pulled to first axis through-hole by the elastic force of radial spring
Axis direction；The middle part of the end support base has the second axially extending bore；The gap adjusting seat also passes through gap adjustment shaft
It holds and is rotatably mounted with central supporting seat, the central supporting seat and end support base are located at the two of gap adjusting seat
Side, the middle part of central supporting seat are equipped with third axially extending bore, and the internal diameter of the third axially extending bore is greater than the second axially extending bore
Internal diameter.
Diverter of the invention includes shell, input shaft, output shaft and intermeshing worm screw, worm gear, the worm screw with
Axis connection is inputted, and is rotated synchronously with input shaft, the worm gear is connected with exporting axis, and rotates with output shaft synchronous；The snail
Bar and worm gear are assemblied in shell, it is characterised in that above-mentioned rocker compensating gear are also equipped in the shell, between described
Gap compensation mechanism and input shaft are located at the both ends of worm screw, and the gap adjusting seat and shell of the rocker compensating gear are fixed to be connected
It connects, the end of worm screw passes through third axially extending bore and stretches in the second axially extending bore, and the end shape of worm screw and second is axially
Through-hole wall is adapted；For the opening direction of the arcwall of the gap adjusting seat back on worm gear direction, worm screw and third are axial
The gap-ratio worm screw of through-hole and the gap of the second axially extending bore are big.
The worm gear worm backlash compensation principle of diverter of the invention is as follows：
After worm screw installs, the end of worm screw can pass through the third axially extending bore of central supporting seat and stretch to end support base
The second axially extending bore in.In original state（Refer in particular to element size processing zero deflection and the agonic situation of assembly）, worm screw
End can't offset with the second axially extending bore inner sidewall of end support base, central supporting seat can be formed worm screw at this time
Support, worm screw can realize good engage with worm gear.
When there is worm gear and worm screw machining deviation, shell installation dimension machining deviation and assembling deviation, the end of worm screw
Portion will offset with the second axially extending bore inner sidewall of end support base, and radial spring can adjust end in a certain range at this time
The position of the vertical direction of support base, to adapt to because of cumulative departure caused by worm and gear zero load rotating torque consistency is poor asks
Topic guarantees system friction always in scope of design and consistency is preferable.
After diverter uses long period, worm and wheel to generate certain abrasion, the elastic force of radial spring can pass through end
Portion's support base drives worm screw to draw close to close to worm gear direction, guarantees the cooperation of worm and worm wheel zero clearance, realizes backlash compensation, avoid
Because abrasion generates various abnormal sound risks after diverter long-time use.Axially lead to since the internal diameter of third axially extending bore is greater than second
The internal diameter in hole, therefore when radial spring adjusts the upright position of worm screw by end support base, central supporting seat can't
Worm screw is caused to hinder.
Further, second axially extending bore is divided into first segment and second segment, and wherein first segment is closer compared with second segment
Gap adjusting seat, first segment are bell mouth shape structure, and the diameter of second segment is less than or equal to the minimum diameter of first segment.It is above-mentioned
Second axially extending bore of structure can form good limit to the end of worm screw, facilitate the position for adjusting the vertical direction of worm screw
It sets, and the axial float that worm screw is likely to occur can be reduced.
Further, the end support base the part for being exposed to arcwall be equipped with first annular protrusion, described first
The outer diameter of annular protrusion is greater than the internal diameter of arcwall, to be used in the axial direction limit end support base, anti-not-go-end
Portion's support base is all extend into arcwall.
Further, the outboard end of the arcwall is equipped with downward projection of step, and the radial spring is stuck at step.
Above-mentioned step can play the position-limiting action on axial direction to radial spring, prevent radial spring from generating waving for axial direction
Or play.
Further, the first axis through-hole of the gap adjusting seat is stepped hole, and the gap adjustment shaft holds interference pressure
Loaded in first axis through-hole, and the step surface of end face and first axis through-hole that gap adjustment shaft is held offsets.Stepped hole can be with
Gap adjustment shaft is held and plays the role of axial limiting, so that gap adjustment shaft holds the suitable position that can be pressed into gap adjusting seat
It sets.
Further, the central supporting seat interference press fitting is in gap adjustment shaft is held, and the central supporting seat is separate
The outer rim of gap adjusting seat side is equipped with the second annular protrusion, and the outer diameter of second annular protrusion is greater than what gap adjustment shaft was held
Internal diameter.Above-mentioned second annular protrusion can limit central supporting seat in the axial direction, and central supporting seat is pressed into
The suitable position that gap adjustment shaft is held.
Further, the worm screw is equipped with the casing of end face opening towards one end of input shaft, and the input shaft stretches to
In casing, input shaft is connect by way of key teeth, keyway cooperation with worm screw, so that input shaft, worm screw rotate synchronously；The shell
Be also equipped with adjustment spring in vivo, the adjustment spring is located in casing, adjust the both ends of spring respectively with the closed end of casing,
Input shaft offsets.Above-mentioned adjustment spring applies an active force towards rocker compensating gear direction to worm screw, so that worm screw
End is able to maintain to be contacted with the second axially extending bore of end support base, accordingly even when also can after abrasion occurs in the end of worm screw
Ensure that rocker compensating gear normally plays backlash compensation effect.
Further, the shell is fixedly installed with midfoot support bearing in the position of corresponding casing, described sleeve pipe it is outer
Edge face is respectively equipped with annular stop protrusion, ring of the described sleeve pipe in midfoot support bearing and two sides in the two sides of midfoot support bearing
Elastic buffer circle is arranged between shape stopper protrusion respectively.Above-mentioned elastic buffer circle can effectively buffer the axial vibration of worm screw,
To reduce noise.
Further, for convenience of installing, in the annular stop protrusion, toward the annular limit of rocker compensating gear side
Position protrusion is integrally formed on casing, and the annular stop protrusion toward input shaft side is by being pressed in the axle sleeve shape on casing
At, the end of the axle sleeve is equipped with annular protrusion to form the annular stop protrusion.
Rocker compensating gear of the invention is simple and reasonable for structure, and the upright position of worm screw may be implemented by radial spring
Adjustment improves comfort so that the back lash of reasonable compensation worm and wheel, reduces noise.
Detailed description of the invention
Fig. 1 is the separate structure schematic diagram of the rocker compensating gear of embodiment 1.
Fig. 2 is the cross-sectional view of the rocker compensating gear of embodiment 1.
Fig. 3 is the front view of the rocker compensating gear of embodiment 1.
Fig. 4 is the rocker compensating gear intermediate gap adjusting seat of embodiment 1 and the cooperation schematic diagram of end support base.
Fig. 5 is the cross-sectional view of the diverter of embodiment 1.
Attached drawing mark：1, rocker compensating gear；2, gap adjusting seat；21, arcwall；22, step；23, first axis is logical
Hole；3, end support base；31, first annular protrusion；32, the second axially extending bore；4, central supporting seat；41, third axially extending bore；
42, the second annular protrusion；5, gap adjustment shaft is held；6, radial spring；7, shell；8, input shaft；9, worm screw；91, casing；10,
Worm gear；11, motor；12, spring is adjusted；13, midfoot support bearing；14, bearing；15, elastic buffer circle；16, axle sleeve；17, axis
Hold support base.
Specific embodiment
It is for example related each to a specific embodiment of the invention by the description to embodiment below against attached drawing
The shape of component, construction, the mutual alignment between each section and connection relationship, the effect of each section and working principle etc. are made into one
The detailed description of step.
Embodiment 1：
The present embodiment proposes a kind of rocker compensating gear 1 and the diverter using the rocker compensating gear 1, so that in diverter
The teeth directional gap of worm and gear keeps within preset range, improving the manipulation comfort level of diverter, and reduce noise.
As shown in figures 1-4, the rocker compensating gear 1 of the present embodiment is by gap adjusting seat 2, end support base 3, central branches
Support seat 4, gap adjustment shaft hold 5 and the composition of radial spring 6, wherein：
Gap adjusting seat 2 is substantially cylindrical in shape structure, and middle part perforation is equipped with first axis through-hole 23, the outside of gap adjusting seat 2
End is equipped with arcwall 21 outstanding, and the central axes of arcwall 21 are overlapped with the central axes of first axis through-hole 23；End support base 3
It also is tubular structure, middle part perforation is equipped with the second axially extending bore 32, and end support base 3 extend into arcwall 21 by outboard end
Interior, end support base 3 is equipped with first annular protrusion 31 in the part for being exposed to arcwall 21, and the outer diameter of first annular protrusion 31 is big
In the internal diameter of arcwall 21, to prevent end support base 3 all for limiting in the axial direction to end support base 3
It extend into arcwall 21.
In the present embodiment, the second axially extending bore 32 divides for first segment and second segment, and wherein first segment more connects compared with second segment
Nearly gap adjusting seat 2, first segment are bell mouth shape structure, and the diameter of second segment is less than or equal to the minimum diameter of first segment.
Second axially extending bore 32 of above structure can form good limit to the end of worm screw 9, help to adjust the vertical of worm screw 9
The position in direction, and the axial float that worm screw 9 is likely to occur can be reduced.
Radial spring 6 is placed on end support base 3, and radial spring 6 is formed by steel wire wound, two free end is at middle part
Position is opposite, and in the present embodiment, the on both sides of the middle of arcwall 21 is equipped with detent, and two free ends of radial spring 6 pass through card
Position is fixed on arcwall 21, and certainly, two free ends of radial spring 6 can also be solid by other ways such as welding, grafting
Due on arcwall 21, details are not described herein again.Radial spring 6 corresponds to the medial surface of the opening of arcwall 21 side and end supports
Seat 3 offsets, and end support base 3 is pulled to the axis direction of first axis through-hole 23 by the elastic force of radial spring 6.
The outboard end of arcwall 21 is equipped with downward projection of step 22, and the radial spring 6 is stuck at step 22.Above-mentioned
Rank 22 can play the position-limiting action on axial direction to radial spring 6, prevent radial spring 6 generate axial direction wave or
Play.
4 interference of central supporting seat press fitting is held in 5 in gap adjustment shaft, and gap adjustment shaft holds 5 interference press fitting and adjusts in gap
In the first axis through-hole 23 of seat 2, so that central supporting seat 4 rotatably be connect with gap adjusting seat 2.Central supporting
Seat 4 is located at the two sides of gap adjusting seat 2 with end support base 3, and it is axially logical that the middle part perforation of central supporting seat 4 is equipped with third
Hole 41, the internal diameter of third axially extending bore 41 are greater than the internal diameter of the second axially extending bore 32.
The first axis through-hole 23 of gap adjusting seat 2 is stepped hole, and the gap adjustment shaft holds 5 interference press fitting in first axle
Into through-hole 23, and gap adjustment shaft holds 5 end face and the step surface of first axis through-hole 23 offsets.Stepped hole can be to gap
Adjustment bearing 5 plays the role of axial limiting, and gap adjustment shaft is enabled to hold 5 suitable positions for being pressed into gap adjusting seat 2.
Central supporting seat 4 is equipped with the second annular protrusion 42, second annular in the outer rim far from 2 side of gap adjusting seat
The outer diameter of protrusion 42 is greater than the internal diameter that gap adjustment shaft holds 5.During above-mentioned second annular protrusion 42 can limit in the axial direction
Support base 4 is entreated, central supporting seat 4 is enabled to be pressed into the suitable position that gap adjustment shaft holds 5.
As shown in figure 5, the diverter of the present embodiment includes shell 7, input shaft 8, output shaft（It is not shown in the figure）And mutually
The worm screw 9 of engagement, worm gear 10, the worm screw 9 connect with input shaft 8, and with input shaft 8 rotate synchronously, the worm gear 10 with it is defeated
Axis connection out, and rotated with output shaft synchronous；Worm screw 9 and worm gear 10 are assemblied in shell 7, are also equipped in the shell 7
Above-mentioned rocker compensating gear 1, the rocker compensating gear 1 are located at the both ends of worm screw 9 with input shaft 8, and the gap is mended
The gap adjusting seat 2 for repaying mechanism 1 is fixedly connected with shell 7, and the end of worm screw 9 passes through third axially extending bore 41 and stretches to second
In axially extending bore 32, the end shape of worm screw 9 is adapted with 32 inner wall of the second axially extending bore；The arc of the gap adjusting seat 2
The opening direction of wall 21 back on 10 direction of worm gear, worm screw 9 be that gap is matched with the second axially extending bore 32, third axially extending bore 41
It closes, and worm screw 9 and the gap-ratio worm screw 9 of third axially extending bore 41 and the gap of the second axially extending bore 32 are big.
Specifically, the diverter of the present embodiment is the electric direction varying device driven using motor 11, and the input shaft 8 is
The motor shaft of motor 11；One end of worm screw 9 towards input shaft 8 is formed with the casing 91 of end face opening, and the input shaft 8 is stretched
Enter to casing 91, input shaft 8 is connect by way of key teeth, keyway cooperation with worm screw 9, so that input shaft 8, worm screw 9 are synchronous
Rotation；Be equipped in casing 91 adjustment spring 12, adjust spring 12 both ends respectively with the closed end of casing 91,8 phase of input shaft
It supports.
Shell 7 is fixedly installed with midfoot support in the mode that the position of corresponding casing 91 is limited by step and circlip is stuck
The outer edge surface of bearing 13, described sleeve pipe 91 is respectively equipped with annular stop protrusion in the two sides of midfoot support bearing 13, and casing 91 exists
It is arranged with elastic buffer circle 15 respectively between midfoot support bearing 13 and the annular stop protrusion of two sides.Above-mentioned elastic buffer circle 15
It can be made of rubber, effectively to buffer the axial vibration of worm screw 9, to reduce noise.
In above-mentioned two annular stop protrusion, the annular stop protrusion toward 1 side of rocker compensating gear is integrally formed
In on casing 91, the annular stop protrusion toward 8 side of input shaft is to be formed by being pressed in the axle sleeve 16 on casing 91, institute
The end for stating axle sleeve 16 is equipped with annular protrusion to form the annular stop protrusion.
In assembly, in shell 7, end support base 3 can be with for 2 interference of the gap adjusting seat press fitting of rocker compensating gear 1
Certain distance is moved up and down in shell 7 without interfering with 7 inner wall of shell；Worm screw 9 extend into shell 7, the end of worm screw 9
Portion passes through third axially extending bore 41 and stretches in the second axially extending bore 32, while worm screw 9 is also by midfoot support bearing 13
Support.After being respectively charged into rocker compensating gear 1, worm screw 9, midfoot support bearing 13,16 interference of axle sleeve press fitting will be compressed in snail
9 end of bar, the axially position of worm screw 9 are limited by the step of midfoot support bearing 13 and shell 7, and with circlip by midfoot support axis
13 are held to be fixed at step；Bearing support block 17 and bearing 14 are equipped at output shaft, 14 interference of bearing is pressed in bearing support block
In 17, bearing support block 17 is fixedly connected with 11 shell of motor, is finally fixedly connected with 11 shell of motor with the shell 7 of diverter.
The worm gear worm backlash compensation principle of diverter of the invention is as follows：
After worm screw 9 installs, the end of worm screw 9 can pass through the third axially extending bore 41 of central supporting seat 4 and stretch to end
In second axially extending bore 32 of support base 3.In original state（Refer in particular to element size processing zero deflection and the agonic feelings of assembly
Condition）, the end of worm screw 9 can't offset with 32 inner sidewall of the second axially extending bore of end support base 3, at this time central supporting seat 4
Worm screw 9 can be formed and be supported, worm screw 9 can realize good engage with worm gear 10.
When there is 9 machining deviation of worm gear 10 and worm screw, 7 installation dimension machining deviation of shell and assembling deviation, worm screw 9
End will offset with 32 inner sidewall of the second axially extending bore of end support base 3, radial spring 6 can be in a certain range at this time
Adjust the position of the vertical direction of end support base 3, to adapt to because of cumulative departure caused by the unloaded rotating torque of 10 worm screw of worm gear 9
Consistency poor guarantees system friction always in scope of design and consistency is preferable.
After diverter uses long period, worm screw 9 and worm gear 10 to generate certain abrasion, the elastic force of radial spring 6 can lead to
Crossing end support base 3 drives worm screw 9 to draw close to close to 10 direction of worm gear, guarantees worm screw 9 and the cooperation of 10 zero clearance of worm gear, between realization
Gap compensation is avoided because abrasion generates various abnormal sound risks after diverter long-time use.Above-mentioned adjustment spring 12 is always to worm screw 9
Apply an active force towards 1 direction of rocker compensating gear, so that the end of worm screw 9 is able to maintain and end support base 3
Second axially extending bore 32 contact, accordingly even when also ensuring that rocker compensating gear 1 is normally sent out after abrasion occurs in the end of worm screw 9
Wave backlash compensation effect.Since the internal diameter of third axially extending bore 41 is greater than the internal diameter of the second axially extending bore 32, in radial bullet
When spring 6 adjusts the upright position of worm screw 9 by end support base 3, central supporting seat 4 can't cause to hinder to worm screw 9.
The rocker compensating gear 1 of the present embodiment can reduce by 10 worm screw of worm gear, 9 tooth caused by due to the abrasion of 10 worm screw 9 of worm gear
Tooth noise is beaten to what gap increase generated, the noise source is in vehicle pivot stud or wheel when passing through uneven road surface when driving
Bounce is transmitted to steering system and causes internal impact abnormal sound, and by the way that 10 worm screw of worm gear, 9 back lash is compensated and can be dropped
Low steering system friction increases manipulation comfort level of the driver when driving vehicle and commutating by uneven road surface or original place；Together
Steering system is rubbed caused by Shi Yike is solved because of the accumulation of worm screw 9, worm gear 10,7 machining deviation of steering gear housing and assembling deviation
Wipe is that vehicle performance caused by deceleration mechanism zero load rotating torque consistency difference drives sense inconsistence problems；It solves on production line
Beat is long, the big problem of equipment investment for assembling caused by worm gear 10, worm screw 9 and the apolegamy of 7 size of shell.
The present invention is exemplarily described above in conjunction with attached drawing, it is clear that the present invention specifically designs the not limit by aforesaid way
System as long as using the improvement for the various unsubstantialities that conception and technical scheme of the invention carry out, or not improved is sent out this
Bright conception and technical scheme directly apply to other occasions, within the scope of the present invention.
Claims (10)
1. a kind of rocker compensating gear, it is characterised in that including gap adjusting seat and end support base, the gap adjusting seat
Middle part is equipped with the first axis through-hole of perforation, and the outboard end of gap adjusting seat is equipped with arcwall outstanding；The end support base
It is extend into arcwall by outboard end, arcwall is arranged with radial spring, and arc is fixed in two free ends of the radial spring
On shape wall, medial surface and the end support base of radial spring offset, and end support base is pulled to first axle by the elastic force of radial spring
To the axis direction of through-hole；The middle part of the end support base has the second axially extending bore；Between the gap adjusting seat also passes through
Gap adjustment bearing is rotatably mounted with central supporting seat, and the central supporting seat and end support base are located at gap adjustment
The two sides of seat, the middle part of central supporting seat are equipped with third axially extending bore, and it is axial that the internal diameter of the third axially extending bore is greater than second
The internal diameter of through-hole.
2. rocker compensating gear according to claim 1, it is characterised in that second axially extending bore be divided into first segment and
Second segment, wherein first segment is compared with second segment closer to gap adjusting seat, and first segment is bell mouth shape structure, and the diameter of second segment is small
In or equal to first segment minimum diameter.
3. rocker compensating gear according to claim 1, it is characterised in that the end support base is being exposed to arcwall
Part be equipped with first annular protrusion, the outer diameter of the first annular protrusion is greater than the internal diameter of arcwall.
4. rocker compensating gear according to claim 1, it is characterised in that the outboard end of the arcwall is equipped with prominent downwards
Step out, the radial spring are stuck at step.
5. rocker compensating gear according to claim 1, it is characterised in that the first axis through-hole of the gap adjusting seat
For stepped hole, the gap adjustment shaft holds interference press fitting in first axis through-hole, and the end face and first that gap adjustment shaft is held
The step surface of axially extending bore offsets.
6. rocker compensating gear according to claim 1, it is characterised in that the central supporting seat interference press fitting is in gap
Adjust bearing in, the central supporting seat far from gap adjusting seat side outer rim be equipped with the second annular protrusion, described second
The outer diameter of annular protrusion is greater than the internal diameter that gap adjustment shaft is held.
7. a kind of diverter, including shell, input shaft, output shaft and intermeshing worm screw, worm gear, the worm screw and input shaft
Connection, and rotated synchronously with input shaft, the worm gear is connected with exporting axis, and rotates with output shaft synchronous；The worm screw and snail
Wheel is assemblied in shell, it is characterised in that rocker compensating gear described in claim 1 is also equipped in the shell, it is described
Rocker compensating gear and input shaft are located at the both ends of worm screw, and gap adjusting seat and the shell of the rocker compensating gear are fixed
The end of connection, worm screw passes through third axially extending bore and stretches in the second axially extending bore, the end shape of worm screw and the second axis
It is adapted to through-hole wall；The opening direction of the arcwall of the gap adjusting seat is back on worm gear direction, worm screw and third axis
It is big to the gap-ratio worm screw of through-hole and the gap of the second axially extending bore.
8. diverter according to claim 7, it is characterised in that opened equipped with end face one end of the worm screw towards input shaft
The casing of mouth, the input shaft stretch in casing, and input shaft is connect by way of key teeth, keyway cooperation with worm screw, so that
Input shaft, worm screw rotate synchronously；Adjustment spring is also equipped in the shell, the adjustment spring is located in casing, adjusts bullet
The both ends of spring offset with the closed end of casing, input shaft respectively.
9. diverter according to claim 8, it is characterised in that the shell is fixedly installed in the position of corresponding casing
The outer edge surface of midfoot support bearing, described sleeve pipe is respectively equipped with annular stop protrusion, the set in the two sides of midfoot support bearing
Pipe is arranged with elastic buffer circle between the annular stop protrusion of midfoot support bearing and two sides respectively.
10. diverter according to claim 9, it is characterised in that in the annular stop protrusion, toward backlash compensation
The annular stop protrusion of mechanism side is integrally formed on casing, and the annular stop protrusion toward input shaft side is by being pressed
It is formed in the axle sleeve on casing, the end of the axle sleeve is equipped with annular protrusion to form the annular stop protrusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810431087.6A CN108860290A (en) | 2018-05-08 | 2018-05-08 | The diverter of rocker compensating gear and the application rocker compensating gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810431087.6A CN108860290A (en) | 2018-05-08 | 2018-05-08 | The diverter of rocker compensating gear and the application rocker compensating gear |
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| Publication Number | Publication Date |
|---|---|
| CN108860290A true CN108860290A (en) | 2018-11-23 |
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| CN201810431087.6A Pending CN108860290A (en) | 2018-05-08 | 2018-05-08 | The diverter of rocker compensating gear and the application rocker compensating gear |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060117889A1 (en) * | 2003-06-25 | 2006-06-08 | Nsk Ltd. | Worm speed reducer and electric power steering device |
| CN101454593A (en) * | 2006-05-31 | 2009-06-10 | 日本精工株式会社 | Speed reducer and electric power steering device equipped therewith |
| CN202545736U (en) * | 2012-04-01 | 2012-11-21 | 浙江万达汽车方向机有限公司 | Automatic worm gear and worm clearance compensation mechanism for electric power steering system |
| CN204432746U (en) * | 2014-12-29 | 2015-07-01 | 北京汽车研究总院有限公司 | A kind of deflector, steering swivel system and vehicle |
| CN206367510U (en) * | 2016-01-29 | 2017-08-01 | 南京东华智能转向***有限公司 | A kind of electric booster steering device worm gear worm backlash compensation mechanism |
| CN107207036A (en) * | 2015-02-04 | 2017-09-26 | 蒂森克虏伯普利斯坦股份公司 | Device for auxiliary torque to be introduced to steering spindle |
| CN207311587U (en) * | 2017-08-23 | 2018-05-04 | 长城汽车股份有限公司 | Rocker compensating gear and servo steering system for servo steering system |
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2018
- 2018-05-08 CN CN201810431087.6A patent/CN108860290A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060117889A1 (en) * | 2003-06-25 | 2006-06-08 | Nsk Ltd. | Worm speed reducer and electric power steering device |
| CN101454593A (en) * | 2006-05-31 | 2009-06-10 | 日本精工株式会社 | Speed reducer and electric power steering device equipped therewith |
| CN202545736U (en) * | 2012-04-01 | 2012-11-21 | 浙江万达汽车方向机有限公司 | Automatic worm gear and worm clearance compensation mechanism for electric power steering system |
| CN204432746U (en) * | 2014-12-29 | 2015-07-01 | 北京汽车研究总院有限公司 | A kind of deflector, steering swivel system and vehicle |
| CN107207036A (en) * | 2015-02-04 | 2017-09-26 | 蒂森克虏伯普利斯坦股份公司 | Device for auxiliary torque to be introduced to steering spindle |
| CN206367510U (en) * | 2016-01-29 | 2017-08-01 | 南京东华智能转向***有限公司 | A kind of electric booster steering device worm gear worm backlash compensation mechanism |
| CN207311587U (en) * | 2017-08-23 | 2018-05-04 | 长城汽车股份有限公司 | Rocker compensating gear and servo steering system for servo steering system |
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Application publication date: 20181123 |