CN110723196A - EPS rack clearance buffer stop block assembly - Google Patents
EPS rack clearance buffer stop block assembly Download PDFInfo
- Publication number
- CN110723196A CN110723196A CN201911034876.7A CN201911034876A CN110723196A CN 110723196 A CN110723196 A CN 110723196A CN 201911034876 A CN201911034876 A CN 201911034876A CN 110723196 A CN110723196 A CN 110723196A
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- China
- Prior art keywords
- rubber ring
- eps
- pressing block
- rack
- annular groove
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- 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.)
- Pending
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Classifications
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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
- B62D3/126—Steering gears mechanical of rack-and-pinion type characterised by the rack
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Gears, Cams (AREA)
Abstract
An EPS rack clearance buffer stop block assembly comprises a pressing block cylinder and a rubber ring, wherein the bottom of the pressing block cylinder is provided with an inwards-concave arc-shaped rack contact curved surface, the top of the pressing block cylinder is provided with a concave annular groove, and a convex rubber ring positioning table is arranged in the middle of the annular groove; the rubber ring is arranged in the annular groove and limited in the pressing block cylinder through the rubber ring positioning table; the pressing block cylinder is formed by injection molding by taking nylon and glass fiber as main materials and is made by processing plastics by using a teflon coating; and at least 5 parallel concave grooves are formed in the rack contact curved surface. The invention solves the problems of easy abrasion, prominent abnormal sound, poor manufacturing manufacturability and high cost of EPS stop block components on the market.
Description
Technical Field
The invention relates to an EPS assembly, in particular to an EPS rack gap buffer stop block assembly.
Background
With the development and progress of the society, automobiles become one of the most important vehicles, and meanwhile, the performance requirements of people on the automobiles are also improved, and particularly, an EPS with good performance is needed. The traditional hydraulic steering engine has the defects of oil leakage, abnormal sound, high energy consumption, poor economy and the like, the traditional EPS gear is meshed by a rack, the back of the rack is limited by a metal stop block to adjust the clearance between the rack and the pinion, so that the rack can move in a left-right friction manner, and the back of the stop block is compressed by a spring to adjust the clearance, so that the problems of large meshing clearance between the rack and the pinion and prominent abnormal sound are caused by the design; the friction coefficient between the metal stop block and the back of the rack is large, and the abrasion of elements is serious due to the fact that grease cannot be supplemented in time; meanwhile, the design has the defects of complex structure, poor part manufacturing manufacturability, high cost and the like. In order to solve the above problems, it is important to invent a novel EPS stopper.
Disclosure of Invention
The invention aims to provide an EPS rack gap buffer stop block assembly, which solves the problems of easy abrasion, prominent abnormal sound, poor manufacturing manufacturability and high cost of the EPS stop block assembly on the market.
The technical scheme adopted by the invention for solving the technical problems is as follows:
an EPS rack clearance buffer stop block assembly comprises a pressing block cylinder and a rubber ring, wherein the bottom of the pressing block cylinder is provided with an inwards-concave arc-shaped rack contact curved surface, the top of the pressing block cylinder is provided with a concave annular groove, and a convex rubber ring positioning table is arranged in the middle of the annular groove; the rubber ring is arranged in the annular groove and is limited in the pressing block cylinder through the rubber ring positioning table.
Furthermore, two adjacent pressing block positioning grooves are respectively arranged on the surface of the pressing block cylinder along the two sides of the diameter direction, and a convex pressing block cylindrical surface is formed in the middle of each two adjacent pressing block positioning grooves.
Furthermore, the briquetting cylinder is injection-molded by taking nylon and glass fiber as main materials and is treated by a teflon (PTFE) coating.
Furthermore, at least 5 parallel concave grooves are arranged on the rack contact curved surface.
Furthermore, a stop block counter bore is arranged in the center of the rack contact curved surface.
Further, the inner diameter of the annular groove is larger than the outer diameter of the rubber ring.
Further, the rubber ring is formed by injection molding.
The EPS rack gap plastic rubber buffer stop block assembly provided by the invention has good manufacturing manufacturability, utilizes the Teflon layer to reduce the friction coefficient, has good impact resistance, shock absorption, noise reduction and stability, and can be sealed and waterproof well.
The invention will be explained in more detail below with reference to the drawings and examples.
Drawings
Fig. 1 is a cross-sectional view of an EPS rack gap bump stop assembly of the present invention.
Fig. 2 is a perspective view of the present invention.
FIG. 3 is a schematic structural diagram of a bottom surface of a curved contact surface of a concave arc-shaped rack according to the present invention.
Fig. 4 is a schematic view of a rubber ring according to the present invention.
Description of reference numerals: 1 briquetting cylinder, 2 ring channels, 3 rubber ring location platforms, 4 rack contact curved surfaces, 5 concave channels, 6 rubber rings, 7 briquetting cylinder surfaces, 8 locating grooves, 9 dog counter bores.
Detailed Description
In an embodiment, as shown in fig. 1, the EPS rack gap buffer stop block assembly includes two assemblies, namely a pressing block cylinder 1 and a rubber ring 6, wherein the bottom of the pressing block cylinder 1 is provided with an inwards concave arc-shaped rack contact curved surface 4, the top of the pressing block cylinder 1 is provided with a concave annular groove 2, and the middle of the annular groove 2 is provided with a convex rubber ring positioning table 3; the rubber ring 6 is arranged in the annular groove 2, as shown in fig. 2 and 4, the rubber ring 6 is sleeved into the rubber ring positioning table 3 in the annular groove 2 of the briquetting cylinder 1 and is limited in the briquetting cylinder 1 through the rubber ring positioning table 3.
The rubber ring 6 is used for replacing a traditional spring, has certain compression deformation capacity, is made of injection molding rubber materials, and has the functions of preventing collision, absorbing shock, reducing noise and the like; simultaneously the internal diameter of the inside ring channel 2 of briquetting cylinder 1 is greater than the external diameter of rubber ring 6, and rubber ring 6 and the inside gap that leaves a certain size of briquetting cylinder 1 promptly, receive the pressure and the rack and pinion meshing locating force of nut locking transmission when rubber ring 6, can compress when being extruded and produce deformation, fill up ring channel 2, spacing inside briquetting cylinder 1, played the effect of buffering. Briquetting cylinder 1 is for using nylon and glass fiber as main material injection moulding, uses teflon (PTFE) coating to handle, and the cost is not high and the manufacturability is good, and the teflon coating is used for reducing coefficient of friction, has slowed down the wearing and tearing between the component.
As shown in fig. 3, at least 5 parallel concave grooves 5 are arranged on the rack contact curved surface 4 at the bottom of the briquetting cylinder 1, and heat generated by friction among elements can be better dissipated through the concave grooves 5; meanwhile, the center of the rack contact curved surface is provided with the check block counter bore 9 for storing grease, the grease in the check block counter bore 9 is filled at one time, when the rack moves in the rack contact curved surface 4, the grease between rack contact surfaces can be stored and supplemented through the concave groove 5 and the central hole 9, and accelerated wear of elements caused by the fact that the grease cannot be supplemented in time is avoided.
As shown in fig. 2 and 4, two adjacent pressing block positioning grooves 8 are respectively arranged on two sides of the surface of the pressing block cylinder 1 in the diameter direction, and a convex pressing block cylindrical surface 7 is formed between the two adjacent pressing block positioning grooves 8, so that the structure can be in interference fit with a steering gear shell, and has high stability and waterproof sealing function.
The invention has been described above with reference to the accompanying drawings, and it is to be understood that the invention is not limited in its application to the details of construction and to the arrangements of the components set forth in the following description, since various modifications may be made without departing from the spirit or scope of the invention.
Claims (7)
1. The EPS rack gap buffer stop block assembly is characterized by comprising a pressing block cylinder (1) and a rubber ring (6), wherein the bottom of the pressing block cylinder (1) is provided with an inwards concave arc-shaped rack contact curved surface (4), the top of the pressing block cylinder (1) is provided with a concave annular groove (2), and the middle of the annular groove (2) is provided with a convex rubber ring positioning table (3); the rubber ring (6) is arranged in the annular groove (2) and is limited in the pressing block cylinder (1) through the rubber ring positioning table (3).
2. The EPS rack gap bump stop block assembly of claim 1, wherein two adjacent bump positioning grooves (8) are respectively arranged on both sides of the surface of the bump cylinder (1) along the diameter direction, and a convex bump cylindrical surface (7) is formed between the two adjacent bump positioning grooves (8).
3. An EPS rack gap bump stop subassembly as claimed in claim 1 or 2, wherein said briquetting cylinder (1) is injection molded from nylon and glass fiber as main materials, treated with Teflon coating.
4. An EPS rack gap bump stop assembly as claimed in claim 1, wherein said rack contact curve (4) is provided with at least 5 parallel grooves (5).
5. The EPS rack gap bump stop assembly of claim 1 wherein the rack contact curve (4) is centrally provided with a stop counter bore (9).
6. An EPS rack gap bump stop assembly as claimed in claim 1, characterized by the annular groove (2) having an inner diameter greater than the outer diameter of the rubber ring (6).
7. An EPS rack gap bump stop assembly as claimed in claim 1 wherein said rubber ring (6) is injection molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911034876.7A CN110723196A (en) | 2019-10-29 | 2019-10-29 | EPS rack clearance buffer stop block assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911034876.7A CN110723196A (en) | 2019-10-29 | 2019-10-29 | EPS rack clearance buffer stop block assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110723196A true CN110723196A (en) | 2020-01-24 |
Family
ID=69222254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911034876.7A Pending CN110723196A (en) | 2019-10-29 | 2019-10-29 | EPS rack clearance buffer stop block assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110723196A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6076417A (en) * | 1997-02-25 | 2000-06-20 | Trw Inc. | Rack guide having linear inner walls for supporting a rack |
| CN201141429Y (en) * | 2007-12-07 | 2008-10-29 | 荆州恒隆汽车零部件制造有限公司 | Tooth gap adjustment mechanism of mechanical steering gear |
| DE102010063184A1 (en) * | 2010-12-16 | 2012-06-21 | Zf Lenksysteme Gmbh | Device i.e. coil spring, for pressing transmission element into another transmission element for e.g. electrical steering of motor car, has thrust piece loadable by pressing unit whose kinetic energy is partially converted into heat energy |
| CN203202160U (en) * | 2013-05-07 | 2013-09-18 | 河北恒诺粉末冶金有限责任公司 | Rack adjusting pressing block assembly |
| CN204775438U (en) * | 2015-05-18 | 2015-11-18 | 上海采埃孚转向系统有限公司 | Steering gear of rack and pinion formula is with briquetting that reduces frictional force |
| EP2974941A1 (en) * | 2008-06-20 | 2016-01-20 | Saint-Gobain Performance Plastics Corporation | Steering yoke |
| CN106170428A (en) * | 2014-04-14 | 2016-11-30 | 奥依列斯工业株式会社 | Tooth bar guide and there is the manipulation device of rack-and-pinion type of tooth bar guide |
| CN207814376U (en) * | 2017-12-28 | 2018-09-04 | 耐世特汽车系统（苏州）有限公司 | A kind of steering rack gap adjustment plastics rack lock block |
-
2019
- 2019-10-29 CN CN201911034876.7A patent/CN110723196A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6076417A (en) * | 1997-02-25 | 2000-06-20 | Trw Inc. | Rack guide having linear inner walls for supporting a rack |
| CN201141429Y (en) * | 2007-12-07 | 2008-10-29 | 荆州恒隆汽车零部件制造有限公司 | Tooth gap adjustment mechanism of mechanical steering gear |
| EP2974941A1 (en) * | 2008-06-20 | 2016-01-20 | Saint-Gobain Performance Plastics Corporation | Steering yoke |
| DE102010063184A1 (en) * | 2010-12-16 | 2012-06-21 | Zf Lenksysteme Gmbh | Device i.e. coil spring, for pressing transmission element into another transmission element for e.g. electrical steering of motor car, has thrust piece loadable by pressing unit whose kinetic energy is partially converted into heat energy |
| CN203202160U (en) * | 2013-05-07 | 2013-09-18 | 河北恒诺粉末冶金有限责任公司 | Rack adjusting pressing block assembly |
| CN106170428A (en) * | 2014-04-14 | 2016-11-30 | 奥依列斯工业株式会社 | Tooth bar guide and there is the manipulation device of rack-and-pinion type of tooth bar guide |
| CN204775438U (en) * | 2015-05-18 | 2015-11-18 | 上海采埃孚转向系统有限公司 | Steering gear of rack and pinion formula is with briquetting that reduces frictional force |
| CN207814376U (en) * | 2017-12-28 | 2018-09-04 | 耐世特汽车系统（苏州）有限公司 | A kind of steering rack gap adjustment plastics rack lock block |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200124 |