CN107380253B - Rack and pinion steering gear - Google Patents
Rack and pinion steering gear Download PDFInfo
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- CN107380253B CN107380253B CN201710205372.1A CN201710205372A CN107380253B CN 107380253 B CN107380253 B CN 107380253B CN 201710205372 A CN201710205372 A CN 201710205372A CN 107380253 B CN107380253 B CN 107380253B
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- steering gear
- sleeve
- abnormal sound
- rack
- steering
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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)
- Vehicle Body Suspensions (AREA)
- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
Abstract
The invention relates to a rack and pinion steering gear, which comprises a steering gear shell, a steering gear sleeve connected with the right end of the steering gear shell, a steering gear arranged in the steering gear shell, and a steering rack arranged in the steering gear shell and the steering gear sleeve and meshed with the steering gear, and is characterized in that: the outer surface of the steering gear sleeve is connected with at least one abnormal sound suppression sleeve in a matching mode and is fastened through a hoop. The steering gear can inhibit or eliminate abnormal sound caused by resonance with a steering gear assembly when the steering gear is meshed with the steering rack, and the driving comfort and the quality of the whole vehicle are improved; simple structure and reliable connection.
Description
Technical Field
The invention relates to an automobile chassis, in particular to a rack and pinion steering gear.
Background
The automobile steering system is a mechanism for changing or maintaining the running direction of an automobile, and ensures that the automobile can be steered and run according to the intention of a driver. Steering gear assemblies are an important component of automotive steering systems, and common steering gears include rack and pinion, worm crank pin, and recirculating ball. The rack and pinion steering gear is simple and compact in structure and high in transmission efficiency, and is used in automobiles more. The steering gear has high use frequency and complex working condition in the automobile running process, and is easy to generate abnormal sound. The abnormal sound generated in the process of meshing the steering gear and the steering rack is particularly obvious, and when the vibration frequency of the steering gear meshed with the steering rack is close to or equal to the self frequency of the steering gear assembly, the resonance is generated, and the abnormal sound is generated. The comfort of the user is influenced, and the quality of the whole vehicle is reduced.
The abnormal sound of the steering gear assembly is in various situations, for example, an abnormal sound preventing structure of a mechanical steering gear of an automobile disclosed in CN201210489929.6, the abnormal sound problem generated when the rack supporting pressing block of the steering gear collides with the steering gear main body shell and the end face of the rack supporting block collides with the end face of the gap adjusting nut is solved by adding an O-shaped rubber ring I and an O-shaped rubber ring II at the matching position of the side wall of the rack supporting pressing block and the inner wall of the steering gear main body shell and adding an O-shaped rubber ring III at the matching position of the end face of the rack supporting block and the end face of the gap adjusting nut; in the modal lifting structure of the mounting bracket on the steering column disclosed in CN201620116345.8, the mounting bracket on the steering column is symmetrically provided with a left reinforcing plate and a right reinforcing plate, so that the effect of improving the rigidity of the mounting bracket on the steering column is achieved, and the steering wheel and the engine are prevented from resonating during the running of the vehicle. Neither patent document addresses the problem of abnormal noise caused by resonance with the steering gear assembly when the steering gear is engaged with the steering rack.
Disclosure of Invention
The invention aims to provide a rack and pinion steering gear, which can inhibit or eliminate abnormal sound caused by resonance with a steering gear assembly when a steering gear is meshed with a steering rack, and improve driving comfort and the quality of the whole vehicle; simple structure and reliable connection.
The invention relates to a rack and pinion steering gear, which comprises a steering gear shell, a steering gear sleeve connected with the right end of the steering gear shell, a steering gear arranged in the steering gear shell, and a steering rack which is arranged in the steering gear shell and the steering gear sleeve and is meshed with the steering gear, and is characterized in that: the outer surface of the steering gear sleeve is connected with at least one abnormal sound suppression sleeve in a matching mode and is fastened through a hoop.
Furthermore, the middle part of the outer surface of the abnormal sound suppression sleeve is provided with an annular groove, and the anchor ear is matched with the annular groove on the abnormal sound suppression sleeve.
Further, the abnormal sound suppression sleeve is made of rubber.
Further, the abnormal noise suppressing cover is preferably made of neoprene.
The invention has the beneficial technical effects that:
the abnormal sound suppression sleeve is connected to the outer surface of the steering gear sleeve in a matched mode, so that the mode of the steering gear assembly can be adjusted by adjusting the material, the quality, the number and the arrangement position of the abnormal sound suppression sleeve or changing the section shape of the abnormal sound suppression sleeve, the mode of the steering gear assembly is avoided along with the vibration frequency generated when the steering gear is meshed with the steering rack, the abnormal sound caused by resonance is suppressed or eliminated, and the driving comfort and the quality of the whole vehicle are improved; simple structure and reliable connection.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a partial sectional view of fig. 1.
In the figure: 1-a steering gear shell, 2-a steering gear sleeve, 3-a steering gear, 4-a steering rack, 5-an abnormal sound suppression sleeve and 6-an anchor ear;
a is the distance between the center of the abnormal sound suppression sleeve and the right end face of the steering gear shell, and b is the distance between the centers of two adjacent abnormal sound suppression sleeves.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
Referring to fig. 1 and 2, a rack and pinion steering gear includes a steering gear housing 1, a steering gear sleeve 2 connected to a right end of the steering gear housing 1, a steering gear 3 disposed in the steering gear housing 1, and a steering rack 4 disposed in the steering gear housing 1 and the steering gear sleeve 2 and engaged with the steering gear 3, and has the following prominent essential features: the outer surface of the steering gear sleeve 2 is connected with at least one abnormal sound suppression sleeve 5 in a matching mode and is fastened through an anchor ear 6. The use of the abnormal sound suppression sleeve 5 can change the quality of the steering gear assembly and adjust the mode of the steering gear assembly, so that the mode of the steering gear assembly is avoided from the vibration frequency generated when the steering gear 3 is meshed with the steering rack 4, the abnormal sound caused by resonance can be suppressed or eliminated, and the driving comfort and the quality of the whole vehicle can be improved.
The middle part of the outer surface of the abnormal sound suppression sleeve 5 is provided with an annular groove, and the anchor ear 6 is matched with the annular groove on the abnormal sound suppression sleeve 5. The annular groove has a limiting function, the position of the anchor ear 6 can be limited when the anchor ear 6 is matched with the abnormal sound suppression sleeve 5, and after the anchor ear 6 is screwed down, the abnormal sound suppression sleeve 5 can be prevented from axially moving or rotating on the steering gear sleeve 2.
The abnormal sound suppression sleeve 5 is made of rubber.
The abnormal noise suppressing sleeve 5 is preferably made of neoprene.
During assembly, the abnormal sound suppression sleeve 5 is matched with the outer surface of the steering gear sleeve 2, and then the steering gear sleeve is fastened by the hoop 6, so that the structure is simple, and the connection is reliable. The screw tightening torque of the clamp is 5-7N.m (Newton. m), and the axial movement or rotation between the abnormal sound suppression sleeve 5 and the steering gear sleeve 2 can be avoided. The mode of the steering gear assembly can be changed by changing the sectional shape of the abnormal sound suppression sleeve 5 or adjusting the material, the quality, the number, the arrangement position and the like of the abnormal sound suppression sleeve 5; the material and the Shore hardness of the abnormal sound suppression sleeve 5 are matched and determined according to the overall vehicle mode; the arrangement position of the abnormal noise suppression sleeve 5 is matched and determined according to the mode of the steering gear assembly.
The arrangement position includes: when the abnormal sound suppression sleeve 5 is one, the mode of the steering gear assembly can be changed by adjusting the distance a between the center of the abnormal sound suppression sleeve and the right end face of the steering gear shell; when the number of the abnormal noise suppression sleeves 5 is two or more, the mode of the steering gear assembly can be changed by adjusting the distance a between the center of the abnormal noise suppression sleeve at the leftmost end and the right end face of the steering gear shell or adjusting the distance b between the centers of two adjacent abnormal noise suppression sleeves.
For the European train type, the parameters of the abnormal sound suppression sleeve 5 when the abnormal sound suppression effect is optimal are obtained through tests: the number of the abnormal sound suppression sleeves 5 is two, the abnormal sound suppression sleeves are all made of neoprene materials with the Shore hardness of 55-65, the mass of each abnormal sound suppression sleeve 5 is about 55g, the distance a between the center of each abnormal sound suppression sleeve and the right end face of the shell of the steering gear is 25mm (millimeter), and the distance b between the centers of every two adjacent abnormal sound suppression sleeves is 140mm (millimeter). According to the matching result, the number of the abnormal sound suppression sleeves 5 can be increased or reduced for some vehicle types, such as one abnormal sound suppression sleeve, three abnormal sound suppression sleeves and four abnormal sound suppression sleeves.
Claims (3)
1. A rack and pinion steering gear comprises a steering gear shell (1), a steering gear sleeve (2) connected with the right end of the steering gear shell (1), a steering gear (3) arranged in the steering gear shell (1), and a steering rack (4) which is arranged in the steering gear shell (1) and the steering gear sleeve (2) and is meshed with the steering gear (3), and is characterized in that: the outer surface of the steering gear sleeve (2) is connected with at least one abnormal sound suppression sleeve (5) in a matching way and is fastened through a hoop (6); the middle part of the outer surface of the abnormal sound suppression sleeve (5) is provided with an annular groove, and the hoop (6) is matched with the annular groove on the abnormal sound suppression sleeve (5).
2. The rack and pinion steering gear according to claim 1, wherein: the abnormal sound suppression sleeve (5) is made of rubber.
3. The rack and pinion steering gear according to claim 2, wherein: the abnormal sound suppression sleeve (5) is made of chloroprene rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710205372.1A CN107380253B (en) | 2017-03-31 | 2017-03-31 | Rack and pinion steering gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710205372.1A CN107380253B (en) | 2017-03-31 | 2017-03-31 | Rack and pinion steering gear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107380253A CN107380253A (en) | 2017-11-24 |
| CN107380253B true CN107380253B (en) | 2020-12-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710205372.1A Active CN107380253B (en) | 2017-03-31 | 2017-03-31 | Rack and pinion steering gear |
Country Status (1)
| Country | Link |
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| CN (1) | CN107380253B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080061529A (en) * | 2006-12-28 | 2008-07-03 | 남양공업주식회사 | Compensational apparatus of free apartness of worm shaft for electric power steering system |
| CN102148547A (en) * | 2010-02-10 | 2011-08-10 | 万都株式会社 | Motor pulley |
| CN201973225U (en) * | 2011-04-02 | 2011-09-14 | 姬宪龙 | Vibration-damping gearshift |
| CN203214685U (en) * | 2013-02-28 | 2013-09-25 | 浙江吉利汽车研究院有限公司杭州分公司 | Constant velocity drive shaft assembly |
| CN106080748A (en) * | 2016-06-30 | 2016-11-09 | 王建法 | Rack and pinion steering gear |
-
2017
- 2017-03-31 CN CN201710205372.1A patent/CN107380253B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080061529A (en) * | 2006-12-28 | 2008-07-03 | 남양공업주식회사 | Compensational apparatus of free apartness of worm shaft for electric power steering system |
| CN102148547A (en) * | 2010-02-10 | 2011-08-10 | 万都株式会社 | Motor pulley |
| CN201973225U (en) * | 2011-04-02 | 2011-09-14 | 姬宪龙 | Vibration-damping gearshift |
| CN203214685U (en) * | 2013-02-28 | 2013-09-25 | 浙江吉利汽车研究院有限公司杭州分公司 | Constant velocity drive shaft assembly |
| CN106080748A (en) * | 2016-06-30 | 2016-11-09 | 王建法 | Rack and pinion steering gear |
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| Publication number | Publication date |
|---|---|
| CN107380253A (en) | 2017-11-24 |
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Effective date of registration: 20191211 Address after: No. 85, Yuxiu Road, yongyang street, Lishui District, Nanjing, Jiangsu 211200 Applicant after: Nanjing Chang'an Automobile Co., Ltd. Address before: 400023, No. 260, Jianxin East Road, Jiangbei District, Chongqing Applicant before: Chongqing Chang'an Automobile Co., Ltd. |
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