CN108340964B - Gear rack steering gear centering additional mechanism - Google Patents
Gear rack steering gear centering additional mechanism Download PDFInfo
- Publication number
- CN108340964B CN108340964B CN201810108663.3A CN201810108663A CN108340964B CN 108340964 B CN108340964 B CN 108340964B CN 201810108663 A CN201810108663 A CN 201810108663A CN 108340964 B CN108340964 B CN 108340964B
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- sleeve
- steering gear
- wall
- side hole
- sliding
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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
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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 relates to a centering additional mechanism of a rack-and-pinion steering gear, and belongs to the technical field of automobile design and manufacture. According to the centering additional mechanism of the rack-and-pinion steering gear, a non-metal threaded sliding sleeve structure is introduced, holes are formed in the side surfaces of additional components, corresponding side holes are in a coaxial state when the racks are centered, detection is carried out through a cylindrical pin, and the positions of the racks are fixed through the cylindrical pin in the steering gear assembling process. The centering additional mechanism can ensure that the steering gear is assembled on the assembly line or the corresponding cylindrical pins can be used for later maintenance, so that the rack is at the designed middle position and cannot slide left and right.
Description
Technical Field
The invention relates to the technical field of automobile design and manufacture, in particular to a centering additional mechanism of a rack-and-pinion steering gear and a preparation method thereof.
Background
In the prior art, an automobile gear rack steering gear mainly comprises a steering gear shell, a rack and a steering gear input shaft, and the rack can freely slide, so that the rack of the existing steering gear structure deviates from the middle position in the transportation process due to collision, and two problems are caused: 1) Multiple adjustments are required to bring the rack closer to the theoretical center position during on-line assembly; 2) The lack of professional centering equipment in the later maintenance is more difficult to ensure the centering of the rack when the steering wheel is installed, and the steering wheel is often not centered when the vehicle moves straight.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention aims to provide a centering additional mechanism of a rack-and-pinion steering gear and a preparation method thereof.
An additional mechanism for centering a rack-and-pinion steering gear, which is characterized in that: comprises an external thread sleeve, an internal thread sliding sleeve and a sliding rail sleeve; the shell of the external thread sleeve is provided with an inner wall axially matched with the input shaft of the steering gear, and the outer wall of the shell is provided with external threads and a side hole communicated with the inner wall of the shell; an inner thread matched with the outer thread is formed on the inner wall of the inner thread sliding sleeve, a sliding groove parallel to the axial direction is formed on the outer wall of the inner thread sliding sleeve, and a side hole communicated with the inner wall is formed on the outer wall of the inner thread sliding sleeve; the sliding rail sleeve is a hollow cylindrical shell, a guide rail matched with the sliding groove is arranged on the inner wall of the cylindrical shell, a side hole communicated with the inner wall is formed in the outer wall of the cylindrical shell, and a flange matched with the steering gear shell is arranged on the upper edge of the cylindrical shell; the inner wall of the external thread sleeve is sleeved on the outer surface of the input shaft of the steering gear and is fixed, the internal thread of the internal thread sliding sleeve is matched with the external thread of the external thread sleeve, so that the side hole of the internal thread sliding sleeve is aligned with the side hole of the external thread sleeve, the guide rail of the sliding rail sleeve is inserted into the sliding groove of the internal thread sliding sleeve, then the guide rail is pressed into the cylindrical shell of the input shaft of the steering gear, so that the outer wall of the sliding rail sleeve is tightly adhered to the inner wall of the cylindrical shell of the input shaft of the steering gear, and the side hole of the cylindrical shell of the input shaft of the steering gear is aligned with the side hole of the sliding rail sleeve and the side hole of the internal thread sliding sleeve; the cylindrical pin sequentially passes through and is fixed on a side hole on the cylindrical shell of the steering gear input shaft, a side hole of the sliding rail sleeve, a side hole of the internal thread sliding sleeve and a side hole of the external thread sleeve.
Wherein, offer the flat bottom groove that cooperatees with the round pin head of cylindric lock on the outer wall around the side opening of tubular housing.
Wherein the length of the external thread sleeve is longer than the length of the internal thread sleeve.
Wherein the number of the sliding grooves and the guide rails is not less than 3.
And the side hole on the cylindrical shell of the diverter input shaft is provided with an internal thread matched with the cylindrical pin.
The centering additional mechanism of the rack-and-pinion steering gear has the following beneficial effects:
the external member introduced by the gear rack steering device centering additional mechanism can ensure that the rack is at the designed middle position by using corresponding cylindrical pins when the steering device is assembled on a general assembly line or later maintenance is performed, the pin positioning pins can be removed after the assembly is completed, then the rubber blanking cover is plugged to play a role in preventing water and dust, and the whole structure is simple and easy to implement.
Drawings
Fig. 1 is a schematic diagram showing a disassembled structure of a rack and pinion steering gear centering attachment mechanism of embodiment 1.
Fig. 2 is a schematic top view of the slide bushing in the centering attachment mechanism.
Fig. 3 is a schematic cross-sectional view of fig. 2 along A-A.
Fig. 4 is a schematic top view of an internally threaded sliding sleeve in the centering attachment.
Fig. 5 is a schematic cross-sectional view of fig. 4 along the direction B-B.
Fig. 6 is a schematic top view of the male threaded sleeve in the centering attachment mechanism.
Fig. 7 is a schematic cross-sectional view of fig. 6 along the direction C-C.
Fig. 8 is a schematic structural view showing a centered state in which the cylindrical pin is inserted.
Fig. 9 is a schematic structural view of the centering attachment mechanism in an assembled state (with a blanking cover).
Detailed Description
The pinion-and-rack steering gear centering attachment mechanism of the present invention will be further described below in conjunction with specific embodiments to aid those skilled in the art in a more complete, accurate and thorough understanding of the inventive concepts and technical solutions of the present invention.
As shown in fig. 1, the rack and pinion steering gear centering attachment mechanism of the present invention includes an external thread bush 20, an internal thread bush 30, and a slide rail bush 40, wherein the external thread bush 20 has a length longer than that of the internal thread bush 30. As shown in fig. 6-7, the housing of the external threaded sleeve 20 has an inner wall 25 that axially mates with the diverter input shaft, and the outer wall of the housing is provided with external threads 21 and side holes 22 that communicate to the inner wall 25 of the housing. As shown in fig. 4 to 5, the inner wall of the female screw sliding sleeve 30 is provided with female screw 31 matching with the male screw, and the outer wall 34 of the female screw sliding sleeve 30 is provided with 3 sliding grooves 33 parallel to the axial direction at intervals and provided with side holes 32 communicated to the inner wall. As shown in fig. 2-3, the sliding rail sleeve 40 is a hollow cylindrical shell, 3 guide rails 43 matched with the sliding groove 33 are arranged on the inner wall of the cylindrical shell at intervals, a side hole 42 communicated with the inner wall is formed on the outer wall 46 of the cylindrical shell, and a flange 45 matched with the upper edge 55 of the steering gear shell is arranged on the upper edge of the cylindrical shell. As shown in fig. 1, the inner wall of the external thread bush 20 is fitted over the outer surface 15 of the steering gear input shaft 10 and fixed by interference fit or adhesion, and the internal thread 31 of the internal thread bush 30 is engaged with the external thread 21 of the external thread bush 20 such that the side hole 32 of the internal thread bush 30 is aligned with the side hole 22 of the external thread bush 20. The guide rail 43 of the shoe 40 is inserted into the slide groove 33 of the female screw slide sleeve 30 and then press-fitted into the cylindrical housing 50 of the steering gear input shaft such that the outer wall 46 of the shoe 40 is closely fitted to the inner wall 56 of the housing of the steering gear input shaft, the flange lower surface 45 of the shoe 40 is fitted to the upper edge 55 of the cylindrical housing 50 of the steering gear input shaft, and such that the side hole 52 of the cylindrical housing 50 of the steering gear input shaft is aligned with the side hole 42 of the shoe 40 and the side hole 32 of the female screw slide sleeve 30. A flat bottom groove 51 matched with the pin head of the cylindrical pin is formed on the outer wall around the side hole 52 of the cylindrical shell. The cylindrical pin 70 shown in fig. 8 sequentially passes through and is fixed to the side hole of the cylindrical shell of the input shaft of the steering gear, the side hole of the sliding rail sleeve, the side hole of the internal thread sliding sleeve and the side hole of the external thread sleeve. And the side hole on the cylindrical shell of the diverter input shaft is provided with an internal thread matched with the cylindrical pin. Fig. 9 shows the assembled state (cylindrical pin pulled out) and plugged with a plug cover 80.
According to the gear rack steering gear centering additional mechanism, a non-metal threaded sliding sleeve structure is introduced, holes are formed in the side surfaces of additional components, corresponding side holes are in a coaxial state when the racks are in a centering position, detection is carried out through a cylindrical pin, the positions of the racks are fixed through the cylindrical pin in the steering gear assembling process, corresponding external threads can be carried on the cylindrical pin to be matched with internal threads of the side holes of the shell, the pin shaft is removed after loading is completed, and a rubber blocking cover is plugged and prevented from dust.
It will be apparent to those skilled in the art that the present invention has been described in detail by way of illustration only, and it is not intended to be limited by the above-described embodiments, as long as various insubstantial modifications of the method concepts and aspects of the invention are employed or the inventive concepts and aspects of the invention are directly applied to other applications without modification, all within the scope of the invention.
Claims (3)
1. An additional mechanism for centering a rack-and-pinion steering gear, which is characterized in that: comprises an external thread sleeve, an internal thread sliding sleeve and a sliding rail sleeve; the shell of the external thread sleeve is provided with an inner wall axially matched with the input shaft of the steering gear, and the outer wall of the shell is provided with external threads and a side hole communicated with the inner wall of the shell; an inner thread matched with the outer thread is formed on the inner wall of the inner thread sliding sleeve, a sliding groove parallel to the axial direction is formed on the outer wall of the inner thread sliding sleeve, and a side hole communicated with the inner wall is formed on the outer wall of the inner thread sliding sleeve; the sliding rail sleeve is a hollow cylindrical shell, a guide rail matched with the sliding groove is arranged on the inner wall of the cylindrical shell, a side hole communicated with the inner wall is formed in the outer wall of the cylindrical shell, and a flange matched with the steering gear shell is arranged on the upper edge of the cylindrical shell; the inner wall of the external thread sleeve is sleeved on the outer surface of the input shaft of the steering gear and is fixed, the internal thread of the internal thread sliding sleeve is matched with the external thread of the external thread sleeve, so that the side hole of the internal thread sliding sleeve is aligned with the side hole of the external thread sleeve, the guide rail of the sliding rail sleeve is inserted into the sliding groove of the internal thread sliding sleeve, then the guide rail is pressed into the cylindrical shell of the input shaft of the steering gear, so that the outer surface of the sliding rail sleeve is tightly adhered to the inner wall of the cylindrical shell of the input shaft of the steering gear, and the side hole of the shell of the input shaft of the steering gear is aligned with the side hole of the sliding rail sleeve and the side hole of the internal thread sliding sleeve; the cylindrical pin sequentially passes through and is fixed on a side hole on the cylindrical shell of the steering gear input shaft, a side hole of the sliding rail sleeve, a side hole of the internal thread sliding sleeve and a side hole of the external thread sleeve; a flat bottom groove matched with the pin head of the cylindrical pin is formed in the outer wall around the side hole of the cylindrical shell; the length of the external thread sleeve is greater than that of the internal thread sliding sleeve.
2. The rack and pinion steering gear centering attachment mechanism of claim 1, wherein: the number of the sliding grooves and the guide rails is not less than 3.
3. The rack and pinion steering gear centering attachment mechanism of claim 1, wherein: and the side hole of the cylindrical shell of the steering gear input shaft is provided with an internal thread matched with the cylindrical pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810108663.3A CN108340964B (en) | 2018-02-01 | 2018-02-01 | Gear rack steering gear centering additional mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810108663.3A CN108340964B (en) | 2018-02-01 | 2018-02-01 | Gear rack steering gear centering additional mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108340964A CN108340964A (en) | 2018-07-31 |
| CN108340964B true CN108340964B (en) | 2024-03-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810108663.3A Active CN108340964B (en) | 2018-02-01 | 2018-02-01 | Gear rack steering gear centering additional mechanism |
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| Country | Link |
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| CN (1) | CN108340964B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113909878B (en) * | 2021-12-15 | 2022-03-15 | 天津德科智控股份有限公司 | Angle centering method for electric power steering gear |
| CN115285210A (en) * | 2022-09-14 | 2022-11-04 | 斯威重庆汽车研发中心有限公司 | A rocker arm limiting device of a recirculating ball steering gear |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4809806A (en) * | 1988-05-06 | 1989-03-07 | General Motors Corporation | Steering gear with hybrid housing |
| JPH10278810A (en) * | 1997-04-01 | 1998-10-20 | Suzuki Motor Corp | Installation structure of steering gear box |
| CN1895946A (en) * | 2005-06-30 | 2007-01-17 | 德尔菲技术公司 | Power steering apparatus with adjustment device |
| CN201148173Y (en) * | 2007-09-17 | 2008-11-12 | 浙江新越汽车零部件有限公司 | Steering centering apparatus for automobile power-driven steering mechanism |
| CN201516552U (en) * | 2009-09-25 | 2010-06-30 | 湖北三环汽车方向机有限公司 | Mechanical centering device of power steering gear valve assembly |
| CN104228932A (en) * | 2014-06-13 | 2014-12-24 | 王洁梅 | Automobile steering gear |
| CN105805251A (en) * | 2016-05-16 | 2016-07-27 | 新乡艾迪威汽车科技有限公司 | Rack and gear meshing clearance adjusting mechanism for automobile steering device |
| CN106080759A (en) * | 2016-08-25 | 2016-11-09 | 中国北方车辆研究所 | A kind of 5 tonnes of circulating ball type bimodulus driven steering devices |
| CN205706837U (en) * | 2016-04-29 | 2016-11-23 | 浙江吉利控股集团有限公司 | Steering gear anti-rotation set |
| CN207943085U (en) * | 2018-02-01 | 2018-10-09 | 阿尔特汽车技术股份有限公司 | Rack and pinion steering gear centering additional mechanism providing additional operation |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3009329B1 (en) * | 2013-06-12 | 2017-09-27 | NSK Ltd. | Rack-and-pinion steering gear unit |
-
2018
- 2018-02-01 CN CN201810108663.3A patent/CN108340964B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4809806A (en) * | 1988-05-06 | 1989-03-07 | General Motors Corporation | Steering gear with hybrid housing |
| JPH10278810A (en) * | 1997-04-01 | 1998-10-20 | Suzuki Motor Corp | Installation structure of steering gear box |
| CN1895946A (en) * | 2005-06-30 | 2007-01-17 | 德尔菲技术公司 | Power steering apparatus with adjustment device |
| CN201148173Y (en) * | 2007-09-17 | 2008-11-12 | 浙江新越汽车零部件有限公司 | Steering centering apparatus for automobile power-driven steering mechanism |
| CN201516552U (en) * | 2009-09-25 | 2010-06-30 | 湖北三环汽车方向机有限公司 | Mechanical centering device of power steering gear valve assembly |
| CN104228932A (en) * | 2014-06-13 | 2014-12-24 | 王洁梅 | Automobile steering gear |
| CN205706837U (en) * | 2016-04-29 | 2016-11-23 | 浙江吉利控股集团有限公司 | Steering gear anti-rotation set |
| CN105805251A (en) * | 2016-05-16 | 2016-07-27 | 新乡艾迪威汽车科技有限公司 | Rack and gear meshing clearance adjusting mechanism for automobile steering device |
| CN106080759A (en) * | 2016-08-25 | 2016-11-09 | 中国北方车辆研究所 | A kind of 5 tonnes of circulating ball type bimodulus driven steering devices |
| CN207943085U (en) * | 2018-02-01 | 2018-10-09 | 阿尔特汽车技术股份有限公司 | Rack and pinion steering gear centering additional mechanism providing additional operation |
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| Publication number | Publication date |
|---|---|
| CN108340964A (en) | 2018-07-31 |
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