CN102730052A - Rack and pinion steering device - Google Patents
Rack and pinion steering device Download PDFInfo
- Publication number
- CN102730052A CN102730052A CN2012101002429A CN201210100242A CN102730052A CN 102730052 A CN102730052 A CN 102730052A CN 2012101002429 A CN2012101002429 A CN 2012101002429A CN 201210100242 A CN201210100242 A CN 201210100242A CN 102730052 A CN102730052 A CN 102730052A
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- tooth bar
- rack
- steering
- pressure piece
- pinion
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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
- B62D3/12—Steering gears mechanical of rack-and-pinion type
- B62D3/126—Steering gears mechanical of rack-and-pinion type characterised by the rack
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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
- B62D3/12—Steering gears mechanical of rack-and-pinion type
- B62D3/123—Steering gears mechanical of rack-and-pinion type characterised by pressure yokes
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The invention provides a rack and pinion steering device, comprising a drive pinion (3) and a pressure piece (5), wherein the drive pinion (3) can be rotatably arranged in a steering device shell (2), and is meshed with the tooth part of a rack (4), and can move axially on the steering device shell (2),the pressure piece (5) can be rotatably arranged in the steering device shell (2), and can be loaded on the rack (4) through a spring, and can be used for putting the rack (4) preload to the drive pinion (3),the diameter of the rack (4) increases at least at the tooth part from the central area (10) to the axial tail end of the rack (4),and the rack (4) always contacts the pressure piece (5) only by the sliding friction along the whole process of the rack.
Description
Technical field
The present invention relates to a kind of tooth bar and miniature gears steering hardware.
Background technology
The known specific embodiment that many tooth bars and miniature gears steering hardware are arranged.They have the steering hardware shell that can supply tooth bar to move axially, promptly vertically move usually.Be rotatably installed in Drive pinion and the engagement of the tooth on the tooth bar in the steering hardware shell; When the Steering gear of vehicle, especially motor vehicle steering device rotates; Be connected on the Drive pinion lateral offset that causes tooth bar in order to the said Steering gear with its common rotation, this and then the steered wheel that causes power actuated vehicle are by means of pull bar and steering swivel pivot.The engagement of Drive pinion in tooth bar keeps there is not play through under spring load, by pressure piece tooth bar being pressed to Drive pinion, and said pressure piece leans against on the tooth bar on the opposite of Drive pinion.About this point, the way through trimming screw adjustment pressure spare play also is known in known prior art, and said trimming screw also influences the spring preload simultaneously.
Pressure piece must dispose or press to by this way tooth bar by this way: do not having between the ingear tooth under the situation of play, can keep effective connection the between tooth bar and the Drive pinion.In this case, must consider the loss equal error of eccentricity, its end-play and tooth about for example drive pinion.In addition, when bearing circle for example during strikes obstacles, said mechanical device must can absorb the vibrations that come from bearing circle, does not cause damage.
In the steering by rack and pinion device in modern times, friction force is a big problem, because it weakens the susceptibility that turns to of chaufeur, and causes the low efficiency of tooth bar and miniature gears steering hardware generally.
Friction in tooth bar and the miniature gears steering hardware comes down to be caused by the mutual action between Drive pinion, tooth bar and the pressure piece.As explained have the pressure piece of spring load to press to tooth bar by this way, so that the tooth bar preload is leaned against on the Drive pinion.For make under all operations condition of steering hardware on the Drive pinion with tooth bar on tooth punching remain on state of contact; Promptly in the deviation relevant with production, assembling and loss between these parts of compensation; Avoiding the separation between Drive pinion and the tooth bar, is to need this preload.
There is the spring stiffness of the pressure piece of spring load can act on maximum, force or the torque peak decision of the tooth punching on steering hardware or Drive pinion and the tooth bar usually by operating period.In the divertical motion process; This load is usually according to the effective spindle arm distribution by this way in steering travel when front tension bar angle and steering swivel: make that said to load on the center of steering hardware, promptly be positioned at the in-line position that turns to be minimum, and near the steering stop place, promptly be maximum when turning to when reaching at utmost.In a word, be desirably in the center and have low friction.
Disclosed a kind of steering hardware that is used for power actuated vehicle in DE 36 13 030A1 for example; It has first segment fork (yoke); Said first segment fork is placed in the opening of shell by this way: it can move axially; And the one of which end is towards tooth bar; Be fixed on the first segment fork other end or towards the ring of the first segment fork other end; Be installed in the opening and towards the joint fork stopper of ring, be placed between ring and the joint fork stopper and under normal circumstances with the first segment fork push to tooth bar first spring, to be placed in the first segment fork inner and at one end have against the second joint fork of the roller bearing of tooth bar, and between the other end that is placed in the second joint fork and the joint fork stopper and under normal circumstances second joint is pitched second spring of pushing tooth bar to.Tooth bar by first segment fork and roller bearing against the central area of that side have groove, two opposite ends of said groove all have asymptotic curvature (gradual curvature).When tooth bar during at central area and gear mesh, because first and second springs, first segment fork and be fixed on the roller bearing that second joint sticks and be pressed towards tooth bar.Yet, under high capacity, promptly in the zone of the opposite end of tooth bar further groove, only be fixed on the roller bearing that second joint sticks and press to tooth bar.In this zone, first segment is pitched away from tooth bar.Therefore, under high load condition, main load is then born separately by roller bearing.EP 1 690 024B1 further disclose a kind of device that is used for tooth bar is pressed to miniature gears, and said device has pressure piece and stops element.Being placed in pressure piece and stopping between the element is spring element, and it applies the F/s of the contact pressure of at least two successive stages, and wherein pressure piece is pressed towards bar.Pressure piece with stop element and all have the mating surfaces that aligns each other, its at initial position each other apart from the certain distance setting.At least one contact surface is a Flexible Design, like this, in case when contact surface is in contact with one another, promptly begin the subordinate phase of contact pressure.
All with the structure of relative complex, especially joint fork and/or pressure piece are characteristic to above-described two prior art embodiment.In addition, the steering hardware among DE 36 13 030A1 has thorny operation noise risk at big relatively steering angle, because in this case, only by roller bearing but not joint fork guides tooth bar.
Summary of the invention
Consider said background, the object of the invention provides the steering by rack and pinion device with compact and simple structure, its; Especially in the center, be characteristic with low friction, in addition; This device also prevents the generation of thorny operation noise with effective and efficient manner, and makes economical.
Said purpose is realized by the steering by rack and pinion device with following technical characterictic.Said steering by rack and pinion device has Drive pinion 3, and it is rotatably installed in the steering hardware shell 2; And with tooth bar 4 toothed portion engagement arranged, it can axially move in steering hardware shell 2, and has pressure piece 5; It can axially move in steering hardware shell 2; Can be on tooth bar 4 by spring load, and be used for tooth bar 4 is loaded on Drive pinion 3,10 axial end to tooth bar 4 are having toothed portion to increase to the diameter of its middle rack 4 at least from the central area; Wherein, tooth bar 4 only contacts with pressure piece 5 through the cliding friction along the whole stroke of said tooth bar all the time.
It should be noted that the characteristic that in claim, appears separately can any meaningful ways technically make up, and forms other embodiment of the present invention.Especially combine with accompanying drawing, specification sheets has carried out extra explanation to the present invention.
According to the present invention; The steering by rack and pinion device has Drive pinion and pressure piece, and said Drive pinion is rotatably installed in the steering hardware shell, and with tooth bar toothed portion engagement arranged; Said tooth bar can axially move in the steering hardware shell; Said pressure piece can be in crust of the device axially moves, can be by spring load against tooth bar, and be used to the tooth bar preload and make it against Drive pinion.In addition, the axial end to tooth bar increases from the central area in that toothed portion is arranged at least according to tooth bar diameter of the present invention, and its middle rack only contacts with pressure piece through the cliding friction along the whole stroke of said tooth bar all the time.Therefore, in the whole operation scope of tooth bar, promptly from the left side steering stop to the right in the tooth bar range the divertical motion process of steering stop operation, pressure piece contacts with tooth bar all the time.In addition, pressure piece is only supported tooth bar by the cliding friction in the process.
It is to prevent thorny operation noise that pressure piece continues to contact with tooth bar, especially the effective ways of quack sound noise.In addition, according to the present invention, pressure piece with respect to the simplicity of tooth bar setting with and according to the present invention the simplicity of its operating principle quite simplified the pressure piece structure and therefore simplified total according to steering by rack and pinion device of the present invention.For example, pressure piece can be embodied as integral type parts in fact.
According to the present invention, the diameter of tooth bar is having the increase of toothed portion at least from the center to the rack shaft terminad, causes that the spring preload on the pressure piece changes according to the axial location of tooth bar.With meaning according to the present invention, the central area of tooth bar means the tooth bar zone that contacts with Drive pinion or in the center of tooth bar and miniature gears steering hardware, close on Drive pinion, the in-line position that is promptly turning in fact.
Therefore, steering by rack and pinion device according to the present invention has such effect, is about to pressure piece and presses to the spring force of tooth bar and therefore tooth bar is pressed to the center of the preload force of Drive pinion at steering hardware; The in-line position that promptly turns to; Be minimum, and increase, up to closing on the steering stop place at each end in the steering stop direction of each end; Promptly, reach till the maxim when turning to when reaching completeness.On the one hand; This makes that in steering hardware reaching minimum possibly rub and become possibility in the center, helps to improve steering sensitivity, on the other hand; Guarantee that tooth bar is pressed towards Drive pinion with sufficiently high preload force all the time; Especially as in beginning explained, when along with the deflection angle that turns to increases, when separation trend between Drive pinion and the tooth bar becomes big.
One advantageous embodiment according to the present invention, pressure piece and the tooth bar especially contact area of rack rear are not plane but curved surface, consequently pressure piece rear side its circumferentially at least part surround tooth bar.This has guaranteed in the whole operation scope of tooth bar, promptly in the range of operating process middle rack, and the reliable axial lead of tooth bar.
Another advantageous embodiment of the present invention changes the tooth bar diameter continuously.The contrast that for example changes with tooth bar stepped diameter or sublevel; Continuously changing of tooth bar diameter has significant advantage; It can be current according to tooth bar axial location, by means of the pressure piece that spring load is arranged, accurately and on purpose confirm to make tooth bar to press to the preload force of Drive pinion.This has guaranteed that tooth punching and the contact force between the tooth punching on the tooth bar on the Drive pinion is sufficient all the time, prevents the separation of two parts thus with effective means.Simultaneously, the friction in tooth bar according to the present invention and miniature gears steering hardware is reduced to minimum.
According to two other advantageous embodiment of the present invention, the tooth bar diameter can be with proportional apart from the distance of central area or increase with hypergeometric example (superproportional) mode.The proportional increase of tooth bar diameter causes that in fact the linearity of preload force increases, and utilizes said preload force, and tooth bar is pressed towards Drive pinion according to the distance apart from the tooth bar central area.The tooth bar diameter is with apart from the superproportional increase of the distance of central area; For example parabola, hyperbola or index increase; Make with the center of steering hardware, especially close on the steering stop place and compare, provide remarkable higher preload force to become possibility at each end.
In general, the foregoing description advantageously makes the high preload force or the contact force that provide sufficient become possibility with the separation trend of offsetting between Drive pinion and the tooth bar, and allows low friction, especially in the center of steering hardware.Therefore; Design the steering by rack and pinion device according to the present invention in order in the divertical motion process of the steering hardware of vehicle, especially power actuated vehicle; In steering hardware, produce effective force; Be simple thing, said power for example must and turn to the spindle arm transmission between the wheel for motor vehicle by pull bar and tooth bar.
Another advantageous embodiment of the present invention has been stipulated the rear portion that toothed portion or the tooth bar that contact with pressure piece are arranged with Drive pinion ingear tooth bar, with tooth bar longitudinal axis constant distance apart.This has following effect, and the tooth bar diameter is with apart from the change that increases the offside with apart from longitudinal axis constant distance one side of tooth bar being had influence apart from the central area.Because apart from the constant distance of the tooth bar longitudinal axis, opposite side then has outline of straight line relatively.
If for example tooth bar has the longitudinal axis one constant distance of toothed portion apart from tooth bar, and thus with straight-line extension and parallel with the longitudinal axis, then the change of tooth bar diameter is that rack rear is influential to the rear side that is positioned at the tooth bar that the toothed portion offside is arranged.Therefore, said rear portion has the curvature corresponding to the tooth bar vary in diameter.On the other hand, if the rear portion section of rack is a constant distance apart from the tooth bar longitudinal axis, and, the section of rack respective curved of flank is arranged then correspondingly with straight-line extension and parallel with the longitudinal axis.
Except the above-mentioned advantage of having mentioned of steering by rack and pinion device according to the present invention; The embodiment of these tooth bars provides other method to come on purpose according to the axial location influence of tooth bar or has confirmed that the power of preload force distributes, even need not have bending towards the tooth bar side of Drive pinion or towards the tooth bar side of pressure piece for for example design reasons.Even such, as previously discussed, steering by rack and pinion device according to the present invention makes it possible to the change by the tooth bar diameter, according to the axial location adjustment or the change preload force of tooth bar.
In another advantageous embodiment of the present invention; Tooth bar towards a side of Drive pinion and tooth bar towards a side of pressure piece not with straight-line extension and parallel with the longitudinal axis of tooth bar, but all have curved profile according to the tooth bar diameter that increases to the rack shaft terminad from the tooth bar central area.Thereby, with Drive pinion ingear tooth bar toothed portion is arranged and the rack rear that contacts with pressure piece not apart from tooth bar (straight line) longitudinal axis constant distance.In this case, tooth bar can be designed to simple gyro-rotor, for example the hyperbola form.Certainly, can form similarly towards the tooth bar side of Drive pinion and tooth bar side and have different curvature or radius of curvature towards pressure piece.Thereby, in general, advantageously have more method and change preload force, utilize said preload force, tooth bar is pressed towards Drive pinion according to the axial location of tooth bar.
According to another advantageous embodiment of the present invention, with the contacted rack rear of pressure piece be cylindrical or the form of ring segment, this cylindrical or ring segment has constant radius.With regard to meaning according to the present invention, cylindrical and difference ring segment are the path of the section longitudinal axis separately: cylindrical segment is to be characteristic with the longitudinal axis with straight path, and that ring segment has is crooked, the longitudinal axis in slight curving path preferably.This makes the contact area between the tooth bar of realizing pressure piece and constant-radius become possibility; And no matter towards any possible curvature of the said mode of tooth bar side of pressure piece; Thereby in whole operation scope or the range at tooth bar, tooth bar is supported reliably and guides by pressure piece all the time in the assurance operating process.In other words, but the contact area of authorized pressure spare or jaw (jaw) are constant, and in this case, the radius of rack rear also is constant, promptly should be corresponding to, preferably slight curving annulus section.
Another advantageous embodiment of the present invention has stipulated that the rack rear that contacts with pressure piece is the cylindrical segment form with constant radius; And the longitudinal axis one constant distance apart from tooth bar; Regulation has a toothed portion with Drive pinion ingear tooth bar, not apart from the longitudinal axis one constant distance of tooth bar.According to according to steering by rack and pinion device embodiment of the present invention, thus rack rear with straight-line extension, promptly apart from tooth bar longitudinal axis constant distance, and the toothed portion that has of tooth bar has curved profile.When said rear portion is the cylindrical segment form; Constant contact area between the constant radius of rack rear and corresponding rack rear and the pressure piece makes pressure piece have constant jaw becomes possibility, so said constant jaw guarantees that tooth bar reliably supports all the time and guides in tooth bar whole operation scope or along its range.
Below with reference to embodiment shown in the drawings, further explain other favourable details and the effect of the present invention.
Description of drawings
Fig. 1 has shown the part plan scheme drawing according to steering by rack and pinion device embodiment of the present invention.
List of reference numerals:
1 steering by rack and pinion device
2 steering hardware shells
3 Drive pinions
4 tooth bars
5 pressure pieces
Tooth punching on 63
Tooth punching on 74
85 move axially
9 spring elements
10 4 central area
11 4 the longitudinal axis
The difference of 12 tooth bar diameters
The specific embodiment
Fig. 1 has shown the part plan scheme drawing according to steering by rack and pinion device 1 embodiment of the present invention.Steering by rack and pinion device 1 comprise the Drive pinion 3 that is rotatably installed in the steering hardware shell 2, can be in steering hardware shell 2 axially movable tooth bar 4 and can be in steering hardware shell 2 axially movable pressure piece 5.The rotatable installation of Drive pinion 3, and moving installation of the axially-displaceable of tooth bar 4 and pressure piece 5 accomplished therefore specifically demonstration in Fig. 1 in a conventional manner.Steering hardware shell 2 is only schematically indication in Fig. 1 similarly.
In an illustrated embodiment, the steering hardware shown in Fig. 11 is the part of the steering hardware (not shown in the diagram) of vehicle, especially power actuated vehicle.For this purpose, Drive pinion 3 is connected to the steering hardware end of Steering gear with rotation common with it, said Steering gear and then be connected on the bearing circle at its other end, and by means of said bearing circle, the chaufeur of power actuated vehicle can turn to input.The hand of rotation dish; Thereby cause the lateral offset of tooth bar 4; Two axial end of said tooth bar and then be connected to the motor vehicle wheel that is turned to through for example pull bar and steering swivel (equally also in Fig. 1, not showing), said tooth bar is according to turning to input that the latter is pivoted.
As can from Fig. 1, further see; Tooth bar 4 has round in fact cross-sectional plane; Although it can be that planar design is to provide big and stable as far as possible mesh regional between tooth punching 6 and 7 that toothed portion is arranged; Said zone equally also is designed to transmit relatively large power and moment reliably, and can not make associated components run into the risk of material overload, and energetically said and moment for example can occur under the shock load situation between Drive pinion 3 and the tooth bar 4, on the bearing circle 1.
As can see in addition from Fig. 1 that tooth bar 4 is with tooth punching 7 or the relative side in tooth zone is arranged, and also is referred to as tooth bar 4 rear portions in this application, contact pressure spare 5.In the embodiment shown, pressure piece 5 is being installed in the steering hardware shell 2 in axially movable mode.Moving axially in Fig. 1 of pressure piece 5 indicates with four-headed arrow 8.Towards the side away from tooth bar 4, by spring load or preload, said spring installation for example is coil spring or dish (Belleville) spring to pressure piece 5 by at least one spring element 9.This means; Under steering hardware shown in Figure 11 state (center); Spring element 9 is at least by preload to such degree: the tooth punching 6 on the Drive pinion 3 is meshed with the tooth punching 7 on the tooth bar 4 reliably, and for example relevant with production, assembling and the loss of said parts tolerance is by reliable compensation.Shown under the situation, on steering hardware 2, towards the side away from pressure piece 5, support spring element 9.Therefore spring element 9 is pressed in pressure piece 5 rear portion of tooth bar 4, thus the latter is pressed in or preload on Drive pinion 3.
Axially, 4 of the tooth bars of the steering by rack and pinion device 1 shown in Fig. 1 are bearing on the pressure piece 5 by cliding friction.As can see in addition from Fig. 1 that the contact area between pressure piece 5 and the tooth bar 4 is crooked, so pressure piece 5 circumferentially at least partly centers on tooth bar 4 at the tooth bar rear side with it.Therefore contact area advantageously adapts to the rear side shape of tooth bar 4, therefore guarantees to tooth bar 4 stable especially and failure-free guiding in the axial direction.In this way, offset thorny operation noise with effective ways, especially the quack noise possibly take place.Shown in steering by rack and pinion device 1 in what also help this is at the whole operation scope internal pressure part 5 of tooth bar 4 and the uninterrupted contact between the tooth bar 4, said whole operation scope is promptly in the steering stop range that turns to moving process middle rack 4 of steering stop to the right from the left side.
Also obvious appreciiable is from Fig. 1, towards the axial end of tooth bar 4, at least toothed portion is being arranged from the central area 10 of tooth bar 4, and the diameter of tooth bar 4 increases.The diameter of said tooth bar 4 increases and brings spring element 9 preload force to change according to the axial location of tooth bar 4, and the therefore change of the spring preload on the pressure piece 5.Therefore therefore, pressure piece 5 is pressed in the spring force on the tooth bar 4 and tooth bar 4 is pressed in the preload force on the Drive pinion 3, in the center of steering hardware 1, promptly turn to in-line position to be in its minimum value through spring element 9.It is in two axial end directions of tooth bar 4, and the direction that promptly is positioned at the steering stop of each end of steering hardware increases, and near the steering stop at each end, promptly when turning to when reaching completeness, reaches maxim.
On the one hand, this makes in steering by rack and pinion device 1, especially 10 the center in the central area; The realization minimum possibly rub and become possibility; This helps the steering sensitivity that improves, on the other hand, guarantees that tooth bar 4 is pressed on the Drive pinion 3 with sufficiently high preload force all the time; Especially as above specify, when the separation trend between Drive pinion 3 and the tooth bar 4 becomes big along with the steering angle increase that turns to.
As can from Fig. 1, see in addition, the diameter of tooth bar 4 shown in steering by rack and pinion device 1 in change continuously.In this way; Pressure piece 5 through spring load is arranged can be confirmed the preload force that tooth bar 4 is pressed on the Drive pinion 3 continuously; With the current axial location of coupling tooth bar 4, thereby guarantee between the tooth punching 6 and 7 on Drive pinion 3 and the tooth bar 4, to have sufficiently high contact force all the time respectively.Therefore, be suppressed with effective means under the whole serviceability that are separated in steering by rack and pinion device 1 of two parts, simultaneously, the friction in the steering by rack and pinion device 1 is reduced to minimum.
In steering by rack and pinion device 1 shown in Figure 1, the diameter of tooth bar 4 not only continuously changes, also with hypergeometric example mode with respect to 10 distance increases apart from the central area.Tooth bar 4 diameters are with 10 the superproportional increase of distance apart from the central area; It can corresponding parabola, hyperbola or exponential function etc., for example makes center or the central area 10 of comparing steering hardware 1, and providing significantly, higher preload force becomes possibility; Especially near the steering stop of each end; As illustrated in detail, at this place, the separation trend between Drive pinion 3 and the tooth bar 4 is high especially owing to act on high pass power or carry-over moment between these parts.
In addition, tooth bar 4 rear portions of the steering by rack and pinion device 1 shown in Fig. 1, said part contacts with pressure piece 5, is positioned at the longitudinal axis 11 1 constant distance places apart from tooth bar 4, thereby with straight-line extension, parallel with the said longitudinal axis 11.In the example shown, the change of tooth bar 4 diameters correspondingly only to tooth bar 4 have the toothed portion profile influential, said profile correspondingly is crooked.In Fig. 1, this degree of crook shows clear by the central area 10 of tooth bar 4 and the tooth bar diameter difference between the axial end zone 12.
Above-mentioned steering by rack and pinion device according to the present invention is not limited to the embodiment disclosed herein, also comprises other embodiment with same function.
In a preferred embodiment, according to the part of steering by rack and pinion device of the present invention as vehicle, especially motor vehicle steering device.
Claims (10)
1. a steering by rack and pinion device has Drive pinion (3), and it is rotatably installed in the steering hardware shell (2); And with tooth bar (4) toothed portion engagement arranged; It can axially move in steering hardware shell (2), and has pressure piece (5), and it can axially move in steering hardware shell (2); Can be on tooth bar (4) by spring load; And be used for tooth bar (4) preload is leaned against Drive pinion (3), (10) are having toothed portion to increase to the axial end of tooth bar (4) to the diameter of its middle rack (4) at least from the central area
It is characterized in that,
Tooth bar (4) only contacts with pressure piece (5) through the cliding friction along the whole stroke of said tooth bar all the time.
2. steering by rack and pinion device as claimed in claim 1,
It is characterized in that,
Contact area between pressure piece (5) and the tooth bar (4) is crooked, and the mode of said bending is that pressure piece (5) circumferentially at least partly centers on tooth bar (4) at tooth bar (4) rear side at it.
3. according to claim 1 or claim 2 steering by rack and pinion device,
It is characterized in that,
The diameter of tooth bar (4) continuously changes.
4. like each described steering by rack and pinion device among the claim 1-3,
It is characterized in that,
The diameter of tooth bar (4) is with the distance of (10) increases pro rata apart from the central area.
5. like each described steering by rack and pinion device among the claim 1-3,
It is characterized in that,
The diameter of tooth bar (4) with apart from the central area (10) the distance become superproportional mode to increase.
As above-mentioned claim in each described steering by rack and pinion device,
It is characterized in that,
Tooth bar (4) has toothed portion with Drive pinion (3) ingear, and perhaps tooth bar (4) and the rear portion that pressure piece (5) contacts are positioned at the longitudinal axis (11) the constant distance place apart from tooth bar (4).
7. like each described steering by rack and pinion device among the claim 1-5,
It is characterized in that,
Tooth bar (4) and Drive pinion (3) ingear have toothed portion, and perhaps the rear portion that contacts with pressure piece (5) of tooth bar (4) is not positioned at the longitudinal axis (11) the constant distance place apart from tooth bar (4).
As above-mentioned claim in each described steering by rack and pinion device,
It is characterized in that,
The rear portion that tooth bar (4) contacts with pressure piece (5) is cylindrical or the form of ring segment, and said cylindrical or ring segment has constant radius.
As above-mentioned claim in each described steering by rack and pinion device,
It is characterized in that,
The rear portion that tooth bar (4) contacts with pressure piece (5) is the cylindrical segment form with constant radius; And be positioned at the longitudinal axis (11) the constant distance place apart from tooth bar (4), tooth bar (4) has toothed portion not to be positioned at the longitudinal axis (11) the constant distance place apart from tooth bar (4) with Drive pinion (3) ingear.
10. a steering hardware that is used for power actuated vehicle is characterized in that, has like each described steering by rack and pinion device in the above-mentioned claim.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011006816.3 | 2011-04-06 | ||
| DE102011006816A DE102011006816A1 (en) | 2011-04-06 | 2011-04-06 | Rack and pinion steering gear for steering device of motor vehicle, comprises drive pinion, which is rotatably mounted in steering housing engaged with toothing section of rack, where rack is axially displaced into steering housing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102730052A true CN102730052A (en) | 2012-10-17 |
| CN102730052B CN102730052B (en) | 2016-12-14 |
Family
ID=46874896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210100242.9A Expired - Fee Related CN102730052B (en) | 2011-04-06 | 2012-04-06 | Tooth bar and little gear steering device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102730052B (en) |
| DE (1) | DE102011006816A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105517879A (en) * | 2013-07-31 | 2016-04-20 | Ntn株式会社 | Steering device and vehicle with same |
| CN110368261A (en) * | 2019-07-26 | 2019-10-25 | 新乡医学院第一附属医院(河南省结核病医院) | A kind of wearable leg training device |
| CN115556816A (en) * | 2022-10-31 | 2023-01-03 | 东风汽车股份有限公司 | Automatic steering engine clearance adjusting device and automobile |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952594A (en) * | 2016-07-04 | 2016-09-21 | 武汉理工大学 | Pressure power generation device for bus card swiping machine |
| US10150498B2 (en) | 2016-08-10 | 2018-12-11 | Jtekt Corporation | Steering system |
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| GB2169567A (en) * | 1985-01-11 | 1986-07-16 | Trw Cam Gears Ltd | Power assisted steering gear assembly |
| US4865149A (en) * | 1986-03-08 | 1989-09-12 | Wolfgang Rohrbach | Rack and pinion steering gear |
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|---|---|---|---|---|
| DE2458320A1 (en) * | 1974-12-10 | 1976-06-16 | Zahnradfabrik Friedrichshafen | Vehicle steering rack with vibration packing - uses thicker central part of rack for secure support for normal travel |
| JPH0662088B2 (en) | 1985-04-17 | 1994-08-17 | 東海テイ−ア−ルダブリユ−株式会社 | Car steering mechanism |
| DE102004006935A1 (en) | 2003-12-05 | 2005-06-30 | Zf Lenksysteme Gmbh | Device for pressing a rack |
| DE102006061501A1 (en) * | 2006-12-23 | 2008-06-26 | Zf Lenksysteme Gmbh | Rack and pinion steering |
-
2011
- 2011-04-06 DE DE102011006816A patent/DE102011006816A1/en not_active Withdrawn
-
2012
- 2012-04-06 CN CN201210100242.9A patent/CN102730052B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2169567A (en) * | 1985-01-11 | 1986-07-16 | Trw Cam Gears Ltd | Power assisted steering gear assembly |
| US4865149A (en) * | 1986-03-08 | 1989-09-12 | Wolfgang Rohrbach | Rack and pinion steering gear |
| CN1234003A (en) * | 1996-11-19 | 1999-11-03 | 腓特烈斯港齿轮工厂股份公司 | Rack-and-pinion assisted steering system |
| CN101300164A (en) * | 2005-11-04 | 2008-11-05 | 日本精工株式会社 | Rack and pinion type steering device and method of manufacturing the same |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105517879A (en) * | 2013-07-31 | 2016-04-20 | Ntn株式会社 | Steering device and vehicle with same |
| US9919730B2 (en) | 2013-07-31 | 2018-03-20 | Ntn Corporation | Steering device and vehicle including the same |
| CN110368261A (en) * | 2019-07-26 | 2019-10-25 | 新乡医学院第一附属医院(河南省结核病医院) | A kind of wearable leg training device |
| CN115556816A (en) * | 2022-10-31 | 2023-01-03 | 东风汽车股份有限公司 | Automatic steering engine clearance adjusting device and automobile |
| CN115556816B (en) * | 2022-10-31 | 2024-06-25 | 东风汽车股份有限公司 | Automatic adjustment device for gap of steering gear and automobile |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102011006816A1 (en) | 2012-10-11 |
| CN102730052B (en) | 2016-12-14 |
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