CN201105753Y - Electric power steering device capable of overcoming self-damping - Google Patents
Electric power steering device capable of overcoming self-damping Download PDFInfo
- Publication number
- CN201105753Y CN201105753Y CNU2007200647568U CN200720064756U CN201105753Y CN 201105753 Y CN201105753 Y CN 201105753Y CN U2007200647568 U CNU2007200647568 U CN U2007200647568U CN 200720064756 U CN200720064756 U CN 200720064756U CN 201105753 Y CN201105753 Y CN 201105753Y
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- spring
- electric power
- tooth bar
- power steering
- vehicle
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Abstract
The utility model relates to a vehicle electric power steering device which can overcome the self-damping and comprises a rack and pinion transmission device which consists of a worm and gear, a torque sensor, a servo motor, a gear rack and a rack sleeve; the key point of the device is that an aligning device is arranged in the rack sleeve, the gear rack is provided with a clamp ring groove and the aligning device consists of a sliding block, a spring, a clamp ring and a check block; the vehicle electric power steering device uses that the spring is compressed when the vehicle changes the direction, the spring is released actively so as to produce a force when the vehicle is aligned, and the force helps the aligning so as to improve the aligning performance by a way of overcoming the self-damping of the electric power steering device; therefore, the vehicle electric power steering device does not need to control the rotation of the motor and change the control method, and avoids the complex mechanical mechanism and control method with the advantages of simple structure, low cost and electricity-saving.
Description
Technical field
The utility model relates to the steering hardware that a kind of vehicle uses, particularly a kind of electric power-assisted steering apparatus that can overcome self damping.
Background technology
Along with the development of vehicle electric technology, the electric power-assisted steering apparatus of vehicle obtains widespread use with advantages such as its environmental protection, little, the flexible design of economizing on electricity, take up room, control policy are easy to adjust.But electric power-assisted steering apparatus self damping is bigger, make the return performance variation of vehicle, and the return performance of vehicle is an importance of vehicle handling stability.Existing electric power-assisted steering apparatus, in order to overcome self damping and to improve return performance, returning timing, produce an auxiliary aligning force by the counter-rotating of control motor and just help back, for this reason, just must increase all complicated angle sensor device of a cover physical construction and control method.So just make that electric power-assisted steering apparatus is on the one hand more complicated, cost is higher, reliability decrease; The motor rotation need be controlled owing to return timing on the other hand, thereby more electric energy can be consumed.
Summary of the invention
It is a kind of simple in structure that the purpose of this utility model is to provide, stable performance, and good reliability, expenditure of energy is little and can overcome the electric power-assisted steering apparatus of self damping.
The utility model includes the worm and gear casing body, worm and gear, and the torque sensing device, servomotor, the rack and pinion drive that tooth bar and tooth bar sleeve pipe are formed, its principal feature is to be provided with aligning device in the described tooth bar sleeve pipe, tooth bar is provided with the collar groove; Described aligning device is by slide block, spring, and collar, block is formed; The collar of described aligning device is installed on respectively in two collar grooves of tooth bar, and both ends of the spring is equipped with slide block, and the both ends of the spring of band slide block is connected with collar respectively, and tooth bar sleeve pipe inner spring two ends also are fixed with block.
Advantage of the present utility model is: the aligning device of increase, torsion when utilizing Vehicular turn, spring is compressed during Vehicular turn, initiatively discharge and produce a power and vehicle returns the timing spring, this power is to overcome the mode of electric power-assisted steering apparatus self damping, just help back, in order to improve return performance.Therefore, need not control the motor rotation and change control method, avoid complicated mechanical mechanism and control method, the utility model is simple in structure, cost is low, consumed power is little.
Description of drawings
Fig. 1 is the utility model structural representation
Fig. 2 is the structure enlarged drawing of rack and pinion drive 5
Fig. 3 is the structure enlarged diagram of aligning device 8
Fig. 4 is collar, draw-in groove structure enlarged drawing
1 worm and gear casing body among the figure, 2 worm and gears, 3 torque sensing devices, 4 servomotors, 5 rack and pinion drives, 6 input shafts, 8 aligning devices, 9a, 9b intermediate rod, 10 tooth bars, 11 tooth bar sleeve pipes, 12a, 12b slide block, 13 springs, 14a, 14b block, 15a, 15b collar, 16 draw-in grooves.
The specific embodiment
By above accompanying drawing as seen, the utility model contains worm and gear casing body 1, worm and gear 2, torque sensing device 3, servomotor 4, rack and pinion drive 5, two intermediate rod 9a, 9b that tooth bar 10 and tooth bar sleeve pipe 11 are formed.Be provided with aligning device 8 in tooth bar sleeve pipe 11 inner chambers, tooth bar 10 is provided with collar groove 16, and described aligning device 8 is by spring 13, two collar 15a, 15b of intrinsic two slide block 12a, 12b, and two block 14a, 14b form.Spring 13 two ends are fixed with two slide block 12a, 12b respectively, and spring 13 two ends of band slide block 12a, 12b are connected with collar 15a, 15b respectively.When vehicle is in when turning to tooth bar 10 sway.Two collar 15a, 15b of aligning device 8 are stuck in two collar grooves 16 of tooth bar 10, will be with the spring 13 of slide block 12a, 12b to be limited between two collar 15a, the 15b.Two block 14a, 14b are fixed on the two ends of tooth bar sleeve pipe 11 inner springs 13.
The vehicle left-handed turning to the time, tooth bar 10 is moved to the left, block 14a blocks the slide block 12a of the left end of spring 13, makes the left end of spring 13 not move; And the right-hand member slide block 12b of spring 13 is blocked by collar 15b, makes the right-hand member of spring 13 and the slide block 12b of spring 13 right-hand members be moved to the left with tooth bar 10, just compression left of spring 13 like this, while spring 13 storage elasticity potential energy.Vehicle returns timing, and the elastic potential energy that spring 13 stores discharges, and produces a power to the right, and this power to the right is identical with the aligning force direction that pivoted wheels on vehicle produces, and makes total aligning force increase, thereby improves return performance.
The vehicle right-hand turning to the time, tooth bar 10 moves right, block 14b blocks the slide block 12b of the right-hand member of spring 13, makes the right-hand member of spring 13 not move; And the left end slide block 12a of spring 13 is blocked by collar 15a, makes the left end of spring 13 and the slide block 12a of spring 13 left ends move right with tooth bar 10, just compression to the right of spring 13 like this, while spring 13 storage elasticity potential energy.Vehicle returns timing, and the elastic potential energy that spring 13 stores discharges, and produces a power left, and this power left is identical with the aligning force direction that pivoted wheels on vehicle produces, and makes total aligning force increase, thereby improves return performance.The moment of torsion that servomotor 4 produces is delivered to two intermediate rod 9a, 9b by worm and gear 2 and rack and pinion drive 5, and intermediate rod 9a, 9b affact pivoted wheels on vehicle with steering effort, thereby forms turning to of vehicle.
Claims (1)
1, a kind of electric power-assisted steering apparatus that can overcome self damping includes worm and gear casing body (1), worm and gear (2), torque sensing device (3), servomotor (4), the rack and pinion drive (5) that tooth bar (10) and tooth bar sleeve pipe (11) are formed is characterized in that:
Be provided with aligning device (8) in A, the described tooth bar sleeve pipe (11), tooth bar (10) is provided with collar groove (16);
B, described aligning device (8) be by slide block (12a, 12b), spring (13), and collar (15a, 15b), block (14a, 14b) is formed;
The collar of C, described aligning device (8) (15a, 15b) is installed on respectively in two collar grooves (16) of tooth bar (10), slide block (12a, 12b) is equipped with at spring (13) two ends, spring (13) two ends of band slide block (12a, 12b) are connected with collar (15a, 15b) respectively, and the two ends of tooth bar sleeve pipe (11) inner spring (13) also are fixed with block (14a, 14b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200647568U CN201105753Y (en) | 2007-10-18 | 2007-10-18 | Electric power steering device capable of overcoming self-damping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200647568U CN201105753Y (en) | 2007-10-18 | 2007-10-18 | Electric power steering device capable of overcoming self-damping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201105753Y true CN201105753Y (en) | 2008-08-27 |
Family
ID=39957546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200647568U Expired - Fee Related CN201105753Y (en) | 2007-10-18 | 2007-10-18 | Electric power steering device capable of overcoming self-damping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201105753Y (en) |
-
2007
- 2007-10-18 CN CNU2007200647568U patent/CN201105753Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080827 Termination date: 20101018 |