CN203005514U - Gear and rack steering device - Google Patents
Gear and rack steering device Download PDFInfo
- Publication number
- CN203005514U CN203005514U CN 201220606679 CN201220606679U CN203005514U CN 203005514 U CN203005514 U CN 203005514U CN 201220606679 CN201220606679 CN 201220606679 CN 201220606679 U CN201220606679 U CN 201220606679U CN 203005514 U CN203005514 U CN 203005514U
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- magnet
- tooth bar
- rack
- housing
- steering gear
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Abstract
The utility model provides a gear and rack steering device, which comprises a steering input shaft, a rack, a first pull rod, a second pull rod and a rack housing, wherein a gear used for being matched with the rack is arranged at one end of the steering input shaft; a first inner ball head is arranged at the first end of the rack; a second inner ball head is arranged at the second end of the rack; the first pull rod is movably connected with the first inner ball head; the second pull rod is movably connected with the second inner ball head; the rack housing is provided with a channel penetrating through the two ends; the rack penetrates through and extends out of the two ends of the rack housing; a first magnet is arranged on the first inner ball head; a second magnet is arranged on the end surface of the rack housing close to the first inner ball head; the opposite surfaces of the second magnet and the first magnet have the same polarity; a third magnet is arranged on the second inner ball head; a fourth magnet is arranged on the end surface of the rack housing close to the second inner ball head; and the opposite surfaces of the fourth magnet and the third magnet have the same polarity. The gear and rack steering device does not make a metal impact sound in the steering process.
Description
Technical field
The utility model relates to a kind of rack and pinion steering gear.
Background technology
The deflector of vehicle is used for turning to for the chaufeur operating and controlling vehicle, what the deflector of existing part vehicle was used is the rack pinion deflector, described rack and pinion steering gear is to turn to by turning to miniature gears on input shaft to coordinate driven gear to move with tooth bar, complete turn to after tooth bar need to get back to turn to before the tooth bar position.
Figure 1 shows that existing rack and pinion steering gear, as can be seen from the figure described rack and pinion steering gear comprises tooth bar 101, be sheathed on the tooth bar housing 102 on tooth bar, the left lever 103 that connects on tooth bar left end bulb, the right pull bar 104 that connects on tooth bar right-hand member bulb, with miniature gears turn to input shaft 105, be connected with spring 106 between the bulb of described tooth bar and tooth bar housing end face; Turn to the miniature gears on input shaft to move and then complete Vehicular turn on tooth bar, utilize the elastic force of spring 106 that tooth bar is carried out return when completing after turning to.
When but the angle that existing rack and pinion steering gear turns to reached certain value, spring was compressed to the limit, and spring and tooth bar bulb, spring and tooth bar housing can clash into and then produce the metal strike note.
The utility model content
When reaching certain value for overcoming angle that the deflector of prior art middle gear tooth bar turns to, spring is compressed to the limit, spring and tooth bar bulb, spring and tooth bar housing can clash into and then produce the problem of metal strike note, the utility model provides a kind of rack and pinion steering gear, comprise turning to input shaft tooth bar, the first pull bar, the second pull bar and tooth bar housing;
The described end of input shaft that turns to is provided with the gear that coordinates for tooth bar;
Described tooth bar first end is provided with the first interior bulb, and the second end is provided with the second interior bulb, and described the first pull bar and the first interior bulb are flexibly connected, and described the second pull bar and the second interior bulb are flexibly connected;
Described tooth bar housing has the passage at break-through two ends, and described tooth bar is along the channel setting of tooth bar housing and stretch out tooth bar housing two ends, describedly turns to the wheel and rack on input shaft coordinate and can be with carry-over bar to move in the tooth bar shell channel;
The described first interior bulb is provided with the first magnet, described tooth bar housing is provided with the second magnet near the end face of the first interior bulb, described the second magnet has identical polarity with the opposite face of the first magnet, the described second interior bulb is provided with the 3rd magnet, described tooth bar housing is provided with the 4th magnet near the end face of the second interior bulb, and described the 4th magnet has identical polarity with the opposite face of the 3rd magnet.
the first interior bulb of described rack and pinion steering gear is provided with the first magnet, the tooth bar housing is provided with the second magnet near the end face of the first interior bulb, the second magnet has identical polarity with the opposite face of the first magnet, the second interior bulb is provided with the 3rd magnet, the tooth bar housing is provided with the 4th magnet near the end face of the second interior bulb, the 4th magnet has identical polarity with the opposite face of the 3rd magnet, after deflector turns to, due to the second magnet and the 4th magnet unequal to the repulsive force of tooth bar, therefore tooth bar will move under the effect of repulsive force, until tooth bar is got back to the position before turning to, the second magnet and the 4th magnet equate the repulsive force of tooth bar, stop motion, on the tooth bar bulb, the repulsive force between the magnet of magnet and tooth bar housing reduces and increases with distance in addition, the prior art medi-spring produces the metal strike note because having compression limit problem can not occur.
Further, in described rack and pinion steering gear, described the first magnet is the magnet ring with negative thread, the described first interior bulb is provided with outside thread, described the first magnet and the first interior bulb are threaded connection, described the 3rd magnet is the magnet ring with negative thread, and the described second interior bulb is provided with outside thread, and described the 3rd magnet and the second interior bulb are threaded connection.
Be threaded comparatively firm.
Further, in described rack and pinion steering gear, be respectively equipped with bayonet socket on described the first magnet and the 3rd magnet.
When magnet was installed, bayonet socket was conveniently installed as the fulcrum of mounting tools.
Further, in described rack and pinion steering gear, described the second magnet and the 4th magnet are the magnet ring that is sheathed on tooth bar housing both ends of the surface.
Adopt magnet ring conveniently to be connected with tooth bar housing end face.
Further, in described rack and pinion steering gear, also comprise turning to input shaft housing, describedly turn to input shaft to pass to turn to input shaft housing and free to rotate, described turning between input shaft housing and tooth bar housing fixed by pole.
Further, in described rack and pinion steering gear, described the first magnet, the second magnet, the 3rd magnet are identical with the material of the 4th magnet, are selected from a kind of in ndfeb magnet, ferrite lattice, alnico magnet and SmCo.
The heat resistance of above-mentioned magnet is good, and quality is firm, is fit to the utilization of deflector.
Further, in described rack and pinion steering gear, described the first magnet, the second magnet, the 3rd magnet are identical with the material of the 4th magnet, are ndfeb magnet;
Distance between the first magnet and the second magnet right opposite is 60mm to 76mm, and the distance between the 3rd magnet and the 4th magnet right opposite is 60mm to 76mm.
Magnet in deflector adopts above-mentioned setting, and deflector is self-return fully.
Further, in described rack and pinion steering gear, described the first magnet is identical with the shape of the 3rd magnet, and the area of cross-sectional plane is 400 square millimeters.
Description of drawings
The existing rack and pinion steering gear structural representation of Fig. 1.
The rack and pinion steering gear structural representation that Fig. 2 the utility model provides.
The a-quadrant enlarged drawing of the rack and pinion steering gear shown in Figure 2 that Fig. 3 the utility model provides.
The B regional enlarged drawing of the rack and pinion steering gear shown in Figure 2 that Fig. 4 the utility model provides.
The first magnet arrangement schematic diagram in the rack and pinion steering gear that Fig. 5 the utility model provides.
The second magnet arrangement schematic diagram in the rack and pinion steering gear that Fig. 6 the utility model provides.
Fig. 7 the utility model rack and pinion steering gear rows of magnets repulsion is with the returning place force of the rack and pinion steering gear spring of the variation relation of distance and spring loaded shown in Figure 1 coordinate diagram with the variation relation of distance.
Wherein, 1, turn to input shaft; 2, tooth bar; 3, the first pull bar; 4, the second pull bar; 5, first of tooth bar the interior bulb; 6, second of tooth bar the interior bulb; 7, tooth bar housing; 8, the first magnet; 9, the second magnet; 10, the 3rd magnet; 11, the 4th magnet; 12, turn to input shaft housing; 13, pole.
The specific embodiment
Clearer for technical matters, technical scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
In description of the present utility model, it will be appreciated that, orientation or the position relationship of the indication such as term " left side ", " right side " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, rather than indicate or hint that the device of indication or element must have specific orientation, construct and operation with specific orientation, therefore can not be interpreted as restriction of the present utility model.
In description of the present utility model, need to prove, unless clear and definite regulation and restriction are separately arranged, broad understanding should be done in term " connection ", for example, can be captive joint, can be also to removably connect, or connect integratedly; Can be mechanical connection, can be also to be electrically connected to; For the ordinary skill in the art, can particular case understand the concrete meaning of above-mentioned term in the utility model.
By the following examples the utility model is further detailed.
The present embodiment is used for the disclosed rack and pinion steering gear of explanation the utility model, and as Fig. 2, Fig. 3 and shown in Figure 4, described rack and pinion steering gear comprises and turns to input shaft 1, tooth bar 2, the first pull bar 3, the second pull bar 4 and tooth bar housing 5; The described end of input shaft 1 that turns to is provided with the gear that coordinates for tooth bar; Described tooth bar first end is provided with the first interior bulb 5, the second ends and is provided with the second interior bulb 6; Described the first pull bar 3 and the first interior bulb 5 are flexibly connected, and described the second pull bar 4 and the second interior bulb 6 are flexibly connected;
Described tooth bar housing 5 has the passage at break-through two ends, and described tooth bar 2 is along the channel setting of tooth bar housing and stretch out tooth bar housing two ends, describedly turns to the wheel and rack on input shaft 1 coordinate and can be with carry-over bar to move in the tooth bar shell channel;
The described first interior bulb is provided with the first magnet 8, described tooth bar housing is provided with the second magnet 9 near the end face of the first interior bulb, described the second magnet has identical polarity with the opposite face of the first magnet, for example the opposite face of the second magnet and the first magnet is all the S utmost point or is all the N utmost point, the described second interior bulb is provided with the 3rd magnet 10, described tooth bar housing is provided with the 4th magnet 11 near the end face of the second interior bulb, described the 4th magnet has identical polarity with the opposite face of the 3rd magnet, can be all the S utmost point or is all the N utmost point.
Turn to the upper end of input shaft 1 to be connected with bearing circle described in the present embodiment, described tooth bar is provided with a plurality of latches, describedly turns to gear on input shaft to stretch in the tooth bar housing and the latch on tooth bar coordinates.
Described tooth bar is a rhabodoid, the area of first bulb at the two ends of rhabodoid and the cross-sectional plane of the second bulb is greater than the area of the cross-sectional plane of rhabodoid, as shown in Figure 2, the first pull bar 3 is positioned at the left end of tooth bar, the second pull bar 4 is positioned at the right-hand member of tooth bar, and pull bar is connected with the axle core of wheel by attaching parts.
As shown in Figure 5, the first magnet 8 described in the present embodiment is a magnet ring, thickness and the radius of magnet ring are decided according to actual conditions, the first magnet 8 is with negative thread, the first interior bulb of tooth bar is provided with the outside thread that coordinates with the first magnet, utilize mounting tools that the first magnet is screwed on the first interior bulb, complete the installation of the first magnet; Same the 3rd magnet 10 is a magnet ring, the 3rd magnet is with negative thread, the second interior bulb of tooth bar is provided with the outside thread that coordinates with the 3rd magnet, utilize mounting tools that the 3rd magnet is screwed on the second interior bulb, complete the installation of the 3rd magnet, the size of the first magnet and the 3rd magnet is identical with material, has identical magneticintensity, and the area of the cross-sectional plane of the first magnet and the 3rd magnet is all 400 square millimeters; More convenient for the installation that makes the first magnet and the 3rd magnet, can establish a bayonet socket on the side face of the first magnet and the 3rd magnet, bayonet socket is used for when magnet is installed, as the fulcrum of mounting tools.
As shown in Figure 6, the second magnet 9 is also a magnet ring, and the second magnet can be enclosed within on the left end of tooth bar housing, also can utilize alite paste to stick on the left side of tooth bar housing, and the present embodiment the second magnet is enclosed within on the left end of tooth bar housing; The fixed form of same the 4th magnet 11 on the tooth bar right side and the second magnet fixed form on the tooth bar left side is identical, and the second magnet has identical material, shape and size with the 4th magnet.
Because the deflector of gear of vehicle tooth bar can produce amount of heat at work, and between magnet, collision can appear when turning to, therefore need the selection work temperature high, scleroid magnet, therefore, the first magnet in the utility model deflector, the second magnet, the 3rd magnet and the 4th magnet are selected from a kind of in ndfeb magnet, ferrite lattice, alnico magnet and SmCo; Wherein ndfeb magnet has its maximum magnetic energy product of high magnetic property (BHmax) and exceeds ferrite (Ferrite) more than 10 times, the machining property of itself is also suitable good, operating temperature reaches as high as 200 degrees centigrade, and its quality is hard, stable performance; The ferrite lattice primary raw material comprises BaFe12O19 and SrFe12O19, forms by the manufacturing of ceramic process method, and quality is harder, belongs to hard brittle material, and good temperature tolerance is arranged; Alnico magnet is a kind of alloy that is made of aluminium, nickel, cobalt, iron and other minor metallic element, foundry technique can processing become different size and dimensions, processibility is fine, and the casting Al-Ni-Co permanent magnet has minimum reversible temperature factor, and operating temperature can be up to more than 600 degrees centigrade; SmCo (SmCo) not only has higher magnetic energy product (14-28MGOe), failure-free coercive force and good temperature characterisitic as rare-earth permanent magnet.
Further, the utility model technical personnel carries out test of many times, there is a problem in the repulsive force that discovery utilizes magnet when the tooth bar of deflector is carried out return, when the distance of the interior bulb of tooth bar and tooth bar housing end face reaches certain value, the repulsive force of magnet is less than the friction force of tooth bar and housing, and the tooth bar of deflector is self-return fully; Therefore for the repulsive force that guarantees magnet on tooth bar moving process middle rack bulb and the magnet on tooth bar housing end face greater than friction force between tooth bar and tooth bar housing, the first magnet described in the utility model, the second magnet, the 3rd magnet are identical with the material of the 4th magnet, be ndfeb magnet, and rack and pinion steering gear middle rack 2 is subject to, and (tooth bar mediates when magnetic balanced, when not turning to), distance between the first magnet and the second magnet right opposite is 60mm to 76mm, and the distance between the 3rd magnet and the 4th magnet right opposite is 60mm to 76mm; Making the distance between the first magnet and the second magnet right opposite by the length that tooth bar is set is 60mm to 76mm, and the distance between the 3rd magnet and the 4th magnet right opposite is 60mm to 76mm.
Fig. 7 be in the utility model rack and pinion steering gear steering procedure rows of magnets repulsion with the returning place force of the rack and pinion steering gear steering procedure medi-spring of the variation relation of distance and the spring loaded in the background technology coordinate diagram with the variation relation of distance, wherein, do not turn to the distance between the interior bulb of hour rack and tooth bar housing end face to be made as 70mm, the magnet of selecting is ndfeb magnet, in figure, the X coordinate represents the interior bulb of tooth bar of rack and pinion steering gear and the distance between tooth bar housing end face, the Y coordinate represents the repulsive force of magnet and the returning place force of spring, wherein the a1 curve represents in the utility model rack and pinion steering gear steering procedure rows of magnets repulsion with the variation relation of distance, and the a2 curve represents that the returning place force of rack and pinion steering gear steering procedure medi-spring of the spring loaded in background technology is with the variation relation of distance, as can be seen from the figure when rack and pinion steering gear redirect to certain angle and makes that in tooth bar, the distance between bulb and tooth bar housing end face is X1, the spring of the deflector described in background technology is compressed to the limit, only there is rigidity power at this moment in spring, if bogie of car continues to increase steering angle, spring and tooth bar bulb, spring and tooth bar housing can clash into and then produce the metal strike note, and the rows of magnets repulsion of magnet-type deflector of the present utility model does not reach maxim, can also continue to increase, therefore adopt rack and pinion steering gear described in the utility model the metal strike note can not occur.
Further, as shown in Figure 1, the utility model also increases and turns to input shaft housing 12, and the described input shaft that turns to passes from housing, described turning between input shaft housing and tooth bar housing fixed by pole 13, avoids the accuracy that turns to input shaft malfunction impact to turn to.
The principle of work of the utility model rack and pinion steering gear is: chaufeur rotates by the moving input shaft that turns to of steer direction dribbling, turning to input shaft rotate to drive this takes turns on tooth bar and moves, and then tooth bar moves in shell channel, tooth bar moves the drive pull bar and moves, pull bar drives vehicle wheel rotation, completes turning to.
The above is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (8)
1. a rack and pinion steering gear, is characterized in that, comprises turning to input shaft tooth bar, the first pull bar, the second pull bar and tooth bar housing;
The described end of input shaft that turns to is provided with the gear that coordinates for tooth bar;
Described tooth bar first end is provided with the first interior bulb, and the second end is provided with the second interior bulb, and described the first pull bar and the first interior bulb are flexibly connected, and described the second pull bar and the second interior bulb are flexibly connected;
Described tooth bar housing has the passage at break-through two ends, and described tooth bar is along the channel setting of tooth bar housing and stretch out tooth bar housing two ends, describedly turns to the wheel and rack on input shaft coordinate and can be with carry-over bar to move in the tooth bar shell channel;
The described first interior bulb is provided with the first magnet, described tooth bar housing is provided with the second magnet near the end face of the first interior bulb, described the second magnet has identical polarity with the opposite face of the first magnet, the described second interior bulb is provided with the 3rd magnet, described tooth bar housing is provided with the 4th magnet near the end face of the second interior bulb, and described the 4th magnet has identical polarity with the opposite face of the 3rd magnet.
2. rack and pinion steering gear according to claim 1, it is characterized in that, described the first magnet is the magnet ring with negative thread, the described first interior bulb is provided with outside thread, described the first magnet and the first interior bulb are threaded connection, described the 3rd magnet is the magnet ring with negative thread, and the described second interior bulb is provided with outside thread, and described the 3rd magnet and the second interior bulb are threaded connection.
3. rack and pinion steering gear according to claim 2, is characterized in that, is respectively equipped with bayonet socket on described the first magnet and the 3rd magnet.
4. rack and pinion steering gear according to claim 1 and 2, is characterized in that, described the second magnet and the 4th magnet are the magnet ring that is sheathed on tooth bar housing both ends of the surface.
5. rack and pinion steering gear according to claim 1, is characterized in that, also comprises turning to input shaft housing, describedly turns to input shaft to pass to turn to input shaft housing and free to rotate, and described turning between input shaft housing and tooth bar housing fixed by pole.
6. rack and pinion steering gear according to claim 1, is characterized in that, described the first magnet, the second magnet, the 3rd magnet are identical with the material of the 4th magnet, is selected from a kind of in ndfeb magnet, ferrite lattice, alnico magnet and SmCo.
7. rack and pinion steering gear according to claim 1, is characterized in that, described the first magnet, the second magnet, the 3rd magnet are identical with the material of the 4th magnet, are ndfeb magnet;
Distance between the first magnet and the second magnet right opposite is 60mm to 76mm, and the distance between the 3rd magnet and the 4th magnet right opposite is 60mm to 76mm.
8. rack and pinion steering gear according to claim 1, is characterized in that, described the first magnet is identical with the shape of the 3rd magnet, and the area of cross-sectional plane is 400 square millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220606679 CN203005514U (en) | 2012-11-16 | 2012-11-16 | Gear and rack steering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220606679 CN203005514U (en) | 2012-11-16 | 2012-11-16 | Gear and rack steering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203005514U true CN203005514U (en) | 2013-06-19 |
Family
ID=48597132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220606679 Expired - Fee Related CN203005514U (en) | 2012-11-16 | 2012-11-16 | Gear and rack steering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203005514U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103818449A (en) * | 2012-11-16 | 2014-05-28 | 广州汽车集团股份有限公司 | Gear-rack steering gear |
| CN109591881A (en) * | 2017-09-30 | 2019-04-09 | 比亚迪股份有限公司 | Rear-axle steering device, vehicle and its rear-wheel steering system |
-
2012
- 2012-11-16 CN CN 201220606679 patent/CN203005514U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103818449A (en) * | 2012-11-16 | 2014-05-28 | 广州汽车集团股份有限公司 | Gear-rack steering gear |
| CN103818449B (en) * | 2012-11-16 | 2016-01-27 | 广州汽车集团股份有限公司 | A kind of rack and pinion steering gear |
| CN109591881A (en) * | 2017-09-30 | 2019-04-09 | 比亚迪股份有限公司 | Rear-axle steering device, vehicle and its rear-wheel steering system |
| CN109591881B (en) * | 2017-09-30 | 2021-03-26 | 比亚迪股份有限公司 | Rear wheel steering gear, vehicle and rear wheel steering system thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20201116 |