Pressing block gap adjusting mechanism for reducing noise of steering engine
By using special-shaped sealing rings in the block gap adjustment mechanism, the noise and pollution problems caused by excessive sealing parts and wear of O-rings in traditional sealing structures are solved, and a lower cost and more efficient noise reduction effect is achieved.
Patent Information
- Application Number
- CN202420221265.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-30
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-01-30
AI Technical Summary
There are too many seals and grooves in the traditional block gap adjustment mechanism, resulting in increased installation process and cost, noise and pollution caused by wear of O-rings, and noise caused by tilting the block after a long period of use.
Special-shaped sealing rings are used, including polytetrafluoroethylene rectangular rings and rubber parts. The rubber parts have V-shaped notches. The filling part is filled in the gap between the adjustment nut and the block to reduce the number of seals and grooves. The use of polytetrafluoroethylene materials reduces the Wear and noise risks.
It effectively reduces noise and debris pollution, reduces steering machine design and processing costs, and improves sealing effect and service life.
Smart Images
Figure CN222185772U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobile steering systems, in particular to a pressure block clearance adjustment mechanism for improving steering machine noise. Background Art
[0002] With the development of technology, electronic power steering has gradually replaced the original hydraulic power steering. As a key component of the electronic power steering, the performance of the pressure block gap adjustment mechanism directly affects the noise and driving feel of the steering gear.
[0003] There are three seals on the traditional pressure block gap adjustment mechanism. One is a rectangular ring set on the contact surface between the adjusting nut and the housing to prevent substances in the external environment of the steering gear from entering the steering gear; the other two are O-rings set on the contact surface between the pressure block and the housing to prevent leakage of lubricating grease and ensure that the pressure block does not collide with the housing during operation, thereby achieving the effect of noise reduction.
[0004] The traditional sealing structure has the following disadvantages: 1. There are many seals and grooves for installing seals, which increases the installation process and cost of the steering gear; 2. The O-ring will be damaged due to friction and wear during long-term use, causing the pressure block to collide with the shell and produce noise, and the wear debris will also pollute the lubrication environment inside the steering gear; 3. After long-term endurance fatigue, the wear of various parts of the steering gear causes the gap between the pressure blocks to increase, causing the pressure blocks to tilt. Under impact conditions, noise caused by collision is likely to occur.
[0005] Therefore, it is necessary to design a block clearance adjustment mechanism to improve the steering gear noise, solve the problem of noise and debris generated by excessive wear of the O-ring polluting the internal lubrication environment of the steering gear, and at the same time reduce the number of seals and grooves, and reduce the design and processing costs of the steering gear. Summary of the invention
[0006] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a block clearance adjustment mechanism for improving the noise of the steering gear, solve the problem of noise and debris polluting the internal lubrication environment of the steering gear caused by excessive wear of the O-ring, and at the same time reduce the number of seals and grooves, thereby reducing the design and processing costs of the steering gear.
[0007] In order to achieve the above-mentioned purpose, the utility model is a pressure block gap adjustment mechanism for improving the noise of a steering gear, comprising a pressure block, an adjusting nut, a pressure block lining, a spring, an adjusting nut plug and an O-ring, one end of the pressure block is provided with an adjusting nut, a spring is provided in a mounting groove between the pressure block and the adjusting nut, an adjusting nut plug is provided in the center of the adjusting nut, a pressure block lining is installed at the other end of the pressure block, a circle of groove one is provided on the side of the pressure block, an O-ring is installed in the groove one, a circle of groove two is provided on the outer ring of the contact surface between the adjusting nut and the pressure block, a special-shaped sealing ring is arranged in the groove two, the special-shaped sealing ring comprises a polytetrafluoroethylene rectangular ring and a rubber piece, a polytetrafluoroethylene rectangular ring is respectively provided on the outer ring of the upper surface and the outer ring of the lower surface of the rubber piece, a circle of V-shaped notch is provided in the middle of the outer ring of the rubber piece, a filling part is provided on the inner ring of the rubber piece, and the filling part fills the gap between the adjusting nut and the pressure block.
[0008] The outer surface of the O-ring and the outer ring of the rubber part are in contact with the housing.
[0009] The polytetrafluoroethylene rectangular ring is in contact with the side of the second groove.
[0010] The inner ring of the rubber member contacts the bottom of the second groove, and the filling portion is located in the gap at the bottom of the second groove and extends toward the spring.
[0011] Compared with the prior art, the utility model provides a special-shaped sealing ring at the contact position between the adjusting nut and the pressure block, and the rubber part of the special-shaped sealing ring has a V-shaped notch, which prevents the rubber part from being squeezed into the sealing gap by the pressure block, and improves the energy absorption and shock absorption effect of the special-shaped sealing ring; the polytetrafluoroethylene rectangular ring not only reduces the noise risk caused by tilting after the pressure block is stressed, but also reduces the wear of the rubber part and the noise and debris generated thereby; a sealing part and a groove are eliminated, thereby reducing the design and processing costs of the steering gear. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is the front view of the utility model.
[0013] Figure 2 for Figure 1 AA section view.
[0014] Figure 3 It is a structural schematic diagram of the special-shaped sealing ring of the utility model. DETAILED DESCRIPTION
[0015] The utility model is now further described with reference to the accompanying drawings.
[0016] See also Figure 1 , Figure 2The utility model is a pressure block clearance adjustment mechanism for improving the noise of the steering gear, comprising a pressure block, an adjustment nut, a pressure block lining, a spring, an adjustment nut plug, and an O-ring. An adjustment nut 2 is arranged at one end of the pressure block 1, a spring 3 is arranged in the mounting groove between the pressure block 1 and the adjustment nut 2, an adjustment nut plug 4 is arranged in the center of the adjustment nut 2, a pressure block lining 7 is installed at the other end of the pressure block 1, a circle of groove 1 is arranged on the side of the pressure block 1, an O-ring 5 is installed in the groove 1, a circle of groove 2 is arranged on the outer circle of the contact surface between the adjustment nut 2 and the pressure block 1, and a special-shaped sealing ring 6 is arranged in the groove 2. The special-shaped sealing ring 6 not only avoids the leakage of lubricating grease and ensures that the pressure block does not collide with the housing during operation, but also has the function of preventing external impurities from entering the interior of the steering gear from the adjusting nut, so the use of the original sealing ring on the contact surface between the adjusting nut and the housing can be eliminated.
[0017] See also Figure 3 The special-shaped sealing ring 6 includes a polytetrafluoroethylene rectangular ring 61 and a rubber member 62. The outer ring of the upper surface and the outer ring of the lower surface of the rubber member 62 are respectively provided with a polytetrafluoroethylene rectangular ring 61. A circle of V-shaped notches 621 is provided in the middle of the outer ring of the rubber member 62. The inner ring of the rubber member 62 is provided with a filling part 622. The filling part 622 fills the gap between the adjusting nut 2 and the pressure block 1.
[0018] The polytetrafluoroethylene material has the characteristic of a small friction coefficient. The polytetrafluoroethylene rectangular ring 61 has the advantages of small friction and wear and a long service life, which can reduce the generation of debris from the special-shaped sealing ring 6, thereby reducing the impact of the debris on the internal lubrication environment of the steering gear. The polytetrafluoroethylene rectangular ring 61 is installed on the upper and lower surfaces of the rubber member 62, which can reduce the risk of noise caused by tilting of the pressure block 1 after being subjected to force.
[0019] When the pressure block 1 is pressed against the special-shaped sealing member 6 , the V-shaped notch 621 reserves space for the deformation of the rubber member, thereby preventing the rubber member 62 from squeezing into the sealing gap and improving the energy absorption and shock reduction effect of the special-shaped sealing member 6 .
[0020] The outer surface of the O-ring 5 and the outer ring of the rubber member 62 are in contact with the housing.
[0021] The polytetrafluoroethylene rectangular ring 61 contacts the side of the second groove.
[0022] The inner ring of the rubber part 62 contacts the bottom of the groove 2, which can provide elastic force and effectively compensate for the wear of the polytetrafluoroethylene rectangular ring 61. After long-term use, the special-shaped sealing ring 6 still has good rebound characteristics, which can reduce the risk of collision between the pressure block 1 and the shell. The filling part 622 is located in the gap at the bottom of the groove 2 and extends toward the spring 3. The special-shaped sealing ring 6 can absorb the impact of the pressure block 1 on the adjustment nut 2 during movement, and the filling part 622 of the rubber part 62 can provide a large buffer force to avoid noise caused by the collision between the pressure block 1 and the adjustment nut 2.
[0023] During assembly of the utility model, after pressing the pressure block lining 7 into the pressure block 1, the O-ring 5 is installed in the groove 1. The rubber part 62 of the special-shaped sealing ring 6 and the polytetrafluoroethylene rectangular ring 61 are assembled, and then the assembled special-shaped sealing ring 6 is installed in the groove 2. After the spring 3 is installed into the installation groove of the pressure block 1, the adjustment nut 2 is tightened to the specified position, and after the position of the adjustment nut 2 is adjusted, the adjustment nut plug 4 is installed. The utility model is relatively simple to install, reduces the assembly cycle, and improves the assembly efficiency.
[0024] The utility model arranges a special-shaped sealing ring at the contact position between the adjusting nut and the pressure block. The rubber part of the special-shaped sealing ring has a V-shaped notch, which prevents the rubber part from being squeezed into the sealing gap by the pressure block, thereby improving the energy absorption and shock reduction effect of the special-shaped sealing ring; the polytetrafluoroethylene rectangular ring not only reduces the noise risk caused by tilting after the pressure block is stressed, but also reduces the wear of the rubber part and the noise and debris generated thereby; a sealing part and a groove are eliminated, thereby reducing the design and processing costs of the steering gear.
Claims
1. A pressure block clearance adjustment mechanism for improving steering gear noise, comprising a pressure block, an adjustment nut, a pressure block lining, a spring, an adjustment nut plug, and an O-ring, wherein an adjustment nut (2) is provided at one end of the pressure block (1), a spring (3) is provided in a mounting groove between the pressure block (1) and the adjustment nut (2), an adjustment nut plug (4) is provided in the center of the adjustment nut (2), a pressure block lining (7) is installed at the other end of the pressure block (1), a groove (1) is provided on the side of the pressure block (1), and an O-ring (5) is installed in the groove (1), Features: A second groove is provided on the outer ring of the contact surface between the adjusting nut (2) and the pressing block (1), and a special-shaped sealing ring (6) is arranged in the second groove. The special-shaped sealing ring (6) comprises a polytetrafluoroethylene rectangular ring (61) and a rubber member (62). A polytetrafluoroethylene rectangular ring (61) is respectively provided on the outer ring of the upper surface and the outer ring of the lower surface of the rubber member (62). A V-shaped notch (621) is provided in the middle of the outer ring of the rubber member (62). A filling portion (622) is provided on the inner ring of the rubber member (62). The filling portion (622) fills the gap between the adjusting nut (2) and the pressing block (1).
2. A pressure block clearance adjustment mechanism for improving steering gear noise according to claim 1, Features: The outer surface of the O-ring (5) and the outer ring of the rubber member (62) are in contact with the housing.
3. A pressure block clearance adjustment mechanism for improving steering gear noise according to claim 1, Features: The polytetrafluoroethylene rectangular ring (61) contacts the side of the second groove.
4. A pressure block clearance adjustment mechanism for improving steering gear noise according to claim 1, Features: The inner ring of the rubber part (62) contacts the bottom of the second groove, and the filling portion (622) is located in the gap at the bottom of the second groove and extends in the direction of the spring (3).