CN1009539B - Steering gear with epicylic gear - Google Patents
Steering gear with epicylic gearInfo
- Publication number
- CN1009539B CN1009539B CN 86106907 CN86106907A CN1009539B CN 1009539 B CN1009539 B CN 1009539B CN 86106907 CN86106907 CN 86106907 CN 86106907 A CN86106907 A CN 86106907A CN 1009539 B CN1009539 B CN 1009539B
- Authority
- CN
- China
- Prior art keywords
- gear
- steering
- shaft
- output shaft
- steering device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Retarders (AREA)
- Gear Transmission (AREA)
- Power Steering Mechanism (AREA)
Abstract
The present invention relates to a steering device which belongs to a peculiar novel steering device. The steering device uses an epicyclic gear for transmission, one duplex outer gear (planet gear) and two inner gears (center gears) are used as main transmission parts, wherein one inner gear is fixed, the other inner gear is connected with an output shaft, and the outer gear is driven by a steering shaft for making planet rotation. The position of the duplex outer rotor or the positions of the two inner gears are exchanged, and thus, the relation of the rotation direction between a steering arm and a steering disk can be changed. The steering device has the advantages of simple and compact structure, easy manufacture without special equipment and special cutters, low cost, high transmission efficiency, portability, reliability and high durability, and can be widely used for automobiles, tractors and relevant machines.
Description
The present invention relates to a kind of deflector.Deflector especially for automobile, trac. and relevant machinery.
Existing vehicle mainly contains following several pattern with deflector: rack and pinion steering gear.Its structure is simpler.The driving efficiency height.But adverse efficiency is also high.Easily recoil.Only be used for light-duty vehicles such as minibus at present; The deflector of Hindley worm formula.Because of driving efficiency is low, gradually superseded; Worm and peg steering gear.Because of anufacturability relatively poor.Use less; Ball-and-worm steering system.Its driving efficiency is higher.Use wider.But structure is complicated.Need special equipment and special tool measurer during manufacturing.Cost is higher.The disclosed a kind of deflector of U.S. Pat-2251167.Its speed reduction gearing is made up of Second Mate's internal gear, and structure is still simpler, but the processing of duplex external gear is still complicated.
The purpose of this invention is to provide a kind of driving efficiency height, simple in structure, the deflector that is easy to make.Adopt following scheme to realize.
The differential gear transmission is adopted in this deflector.Its keystone configuration is that an external gear (satellite gear) is meshed with the inner gear (center gear) of two different numbers of teeth simultaneously.One of them inner gear is fixed.Another and pitman shaft (output shaft) link; External gear is done the planet rotation by turning to eccentric shaft (input shaft) to drive, and it is differential to cause two inner geares to take place, and makes the output shaft rotation, the tooth difference of two inner geares of exchange can change between input shaft and the output shaft in the same way or the contrarotation relation.
The angular gear ratio I formula of this deflector is: I=Z
3/ (Z
3-Z
2)
Z in the formula
3And Z
2Be respectively the number of teeth of rotation and fixed annulus.
Accompanying drawing is the structural representation of this deflector.Embodiments of the invention are described.
Steering handwheel (a) drives input shaft by universal-joint (b) and promptly turns to eccentric shaft (H).Speed reduction gearing is the differential gear transmission.Its satellite gear is that external gear (1) is meshed with the inner gear (2,3) of two different numbers of teeth simultaneously.Wherein inner gear (2) is fixed.And inner gear (3) is that pitman shaft links with output shaft (C).External gear is driven by input shaft (H) and does the planet rotation.It is differential to cause two inner geares to take place.Thereby drive the output shaft rotation.
This deflector has following advantage:
1. simple in structure, part is few, and volume is little, and is in light weight, only is about 75% of conventional deflector, because the number of teeth difference less (being generally 1) of two inner geares.More easily satisfy the strength of gear teeth requirement when of certain angle transmission.
2. driving efficiency height.Can reach 85%, fatigue life is more than 500,000 times, all surpassed auto trade high-class product standard since the number of teeth difference of interior external gear can 〉=4, can avoid the gear mesh angle that often has in the general small teeth number difference planet gear transmission bigger like this, shortcomings such as bearing overload and driving efficiency reduction.
3. good manufacturability, processing and manufacturing is easy, does not need special equipment and special tool, and cost is lower, is suitable for stock production.
Angular gear ratio I only with the tooth number Z of two inner geares
3And Z
2Relevant, and with the tooth number Z of external gear
1Irrelevant, so design calculation is comparatively convenient, when the number of teeth difference of two inner geares was 1, then the absolute value of I equaled the tooth number Z of rotational inner gear
3
5. two kinds of array modes are arranged, when the tooth number Z of inner gear
3＞Z
2The time, input shaft is identical with the relative hand of rotation of output shaft, claims just rotatable; Work as Z
3＜Z
2The time, its relative hand of rotation is opposite, claims reversible type.
Embodiment is: work as Z
4=23 Z
2=27 Z
3=23.Then L=38(on the occasion of) for just rotatable.
Work as Z
1=23 Z
2=28 Z
3=27.I=-27(negative value then) be reversible type.
Claims (3)
1, a kind of deflector that is used for automobile, trac. and relevant machinery, form by turning to eccentric shaft (input shaft), speed reduction gearing and pitman shaft (defeated axle), it is characterized in that: speed reduction gearing adopts the differential gear transmission, its keystone configuration is that satellite gear is external gear (1), be meshed with the inner gear (2,3) of two different numbers of teeth simultaneously, wherein inner gear 2 is fixed, and inner gear 3 links with output shaft C; External gear is driven by input shaft (H) and does the planet rotation, and it is differential to cause two inner geares to take place, thereby drives the output shaft rotation.
2, deflector according to claim 1 is characterized in that: transmitting ratio is only relevant with the number of teeth of two inner geares, and irrelevant with the number of teeth of external gear.
3, deflector according to claim 1 is characterized in that: the tooth of two inner geares of exchange is poor, can change between input shaft and the output shaft in the same way or contrarotation relation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86106907 CN1009539B (en) | 1986-10-24 | 1986-10-24 | Steering gear with epicylic gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86106907 CN1009539B (en) | 1986-10-24 | 1986-10-24 | Steering gear with epicylic gear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86106907A CN86106907A (en) | 1988-05-04 |
| CN1009539B true CN1009539B (en) | 1990-09-12 |
Family
ID=4803410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86106907 Expired CN1009539B (en) | 1986-10-24 | 1986-10-24 | Steering gear with epicylic gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1009539B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110001757B (en) * | 2019-04-11 | 2020-08-04 | 重庆大学 | Variable speed ratio steering system based on cross axle universal joint |
-
1986
- 1986-10-24 CN CN 86106907 patent/CN1009539B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN86106907A (en) | 1988-05-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |